From 78bf2fe4a5bf37514f6dfd203ef969da0bf40c2e Mon Sep 17 00:00:00 2001 From: Xavier Del Campo Romero Date: Mon, 22 Sep 2025 17:32:44 +0200 Subject: Setup project skeleton --- .gitignore | 6 + CMakeLists.txt | 65 +++ LICENSE | 661 ++++++++++++++++++++++ README.md | 176 ++++++ astrftime.c | 58 ++ auth.c | 327 +++++++++++ auth.h | 45 ++ cmake/FindGraphicsMagick.cmake | 310 +++++++++++ cmake/Findlibsodium.cmake | 29 + cmake/Findweb.cmake | 24 + configure | 262 +++++++++ db.c | 188 +++++++ db.h | 69 +++ db_post.c | 63 +++ db_section.c | 59 ++ db_topic.c | 57 ++ default.h | 10 + default_prv_policy.c | 30 + default_style.c | 63 +++ default_terms.c | 13 + defs.h | 43 ++ endpoints.h | 21 + ep_create.c | 695 +++++++++++++++++++++++ ep_index.c | 432 +++++++++++++++ ep_login.c | 306 +++++++++++ ep_logout.c | 85 +++ ep_passwd.c | 400 ++++++++++++++ ep_signup.c | 651 ++++++++++++++++++++++ ep_style.c | 89 +++ ep_ucp.c | 241 ++++++++ ep_view.c | 1180 ++++++++++++++++++++++++++++++++++++++++ form.h | 38 ++ form_badreq.c | 29 + form_category.c | 40 ++ form_footer.c | 105 ++++ form_head.c | 45 ++ form_login.c | 105 ++++ form_post.c | 54 ++ form_section.c | 64 +++ form_shortpwd.c | 21 + form_topic.c | 63 +++ form_unauthorized.c | 29 + gencookie.c | 72 +++ getul.c | 52 ++ getul_n.c | 33 ++ jwt.c | 229 ++++++++ jwt.h | 28 + login_get.c | 49 ++ main.c | 648 ++++++++++++++++++++++ op.c | 183 +++++++ op.h | 40 ++ sanitize.c | 54 ++ tokengen.c | 155 ++++++ utils.h | 30 + 54 files changed, 8824 insertions(+) create mode 100644 .gitignore create mode 100644 CMakeLists.txt create mode 100644 LICENSE create mode 100644 README.md create mode 100644 astrftime.c create mode 100644 auth.c create mode 100644 auth.h create mode 100644 cmake/FindGraphicsMagick.cmake create mode 100644 cmake/Findlibsodium.cmake create mode 100644 cmake/Findweb.cmake create mode 100755 configure create mode 100644 db.c create mode 100644 db.h create mode 100644 db_post.c create mode 100644 db_section.c create mode 100644 db_topic.c create mode 100644 default.h create mode 100644 default_prv_policy.c create mode 100644 default_style.c create mode 100644 default_terms.c create mode 100644 defs.h create mode 100644 endpoints.h create mode 100644 ep_create.c create mode 100644 ep_index.c create mode 100644 ep_login.c create mode 100644 ep_logout.c create mode 100644 ep_passwd.c create mode 100644 ep_signup.c create mode 100644 ep_style.c create mode 100644 ep_ucp.c create mode 100644 ep_view.c create mode 100644 form.h create mode 100644 form_badreq.c create mode 100644 form_category.c create mode 100644 form_footer.c create mode 100644 form_head.c create mode 100644 form_login.c create mode 100644 form_post.c create mode 100644 form_section.c create mode 100644 form_shortpwd.c create mode 100644 form_topic.c create mode 100644 form_unauthorized.c create mode 100644 gencookie.c create mode 100644 getul.c create mode 100644 getul_n.c create mode 100644 jwt.c create mode 100644 jwt.h create mode 100644 login_get.c create mode 100644 main.c create mode 100644 op.c create mode 100644 op.h create mode 100644 sanitize.c create mode 100644 tokengen.c create mode 100644 utils.h diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..bb36d8e --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +build/ +/nanobbs +/tokengen +*.o +*.d +/Makefile diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..6aa295b --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,65 @@ +cmake_minimum_required(VERSION 3.13) +project(nanobbs C) +add_executable(${PROJECT_NAME} + auth.c + astrftime.c + db.c + db_post.c + db_section.c + db_topic.c + default_prv_policy.c + default_style.c + default_terms.c + ep_create.c + ep_index.c + ep_login.c + ep_logout.c + ep_passwd.c + ep_signup.c + ep_style.c + ep_ucp.c + ep_view.c + form_badreq.c + form_category.c + form_footer.c + form_head.c + form_login.c + form_post.c + form_section.c + form_shortpwd.c + form_topic.c + form_unauthorized.c + gencookie.c + getul.c + getul_n.c + jwt.c + login_get.c + main.c + op.c + sanitize.c +) +add_executable(tokengen + jwt.c + tokengen.c +) +set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_LIST_DIR}/cmake) +find_package(libsodium REQUIRED) +find_package(cJSON REQUIRED) +find_package(SQLite3 3.6.19 REQUIRED) +find_package(web 0.3.0) + +if(WEB_FOUND) + find_package(dynstr 0.1.0 REQUIRED) +else() + message(STATUS "Using in-tree libweb") + set(BUILD_EXAMPLES OFF) + add_subdirectory(libweb) + # dynstr is already provided by libweb. +endif() + +set(deps dynstr sqlite3 libsodium cjson) +target_link_libraries(${PROJECT_NAME} PRIVATE web ${deps}) +target_compile_options(${PROJECT_NAME} PRIVATE -Wall) +target_link_libraries(tokengen PRIVATE ${deps}) +target_compile_options(tokengen PRIVATE -Wall) +install(TARGETS ${PROJECT_NAME} tokengen) diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..be3f7b2 --- /dev/null +++ b/LICENSE @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If the Program does not specify a version number of the +GNU Affero General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU Affero General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..43fb259 --- /dev/null +++ b/README.md @@ -0,0 +1,176 @@ +# nanobbs, a tiny forums software + +`nanobbs` is a simple and lightweight implementation of a forums software, +commonly known as "bulletin board software" or simply "BBS", written in C99 +plus POSIX.1-2008 extensions. + +## Disclaimer + +Intentionally, `nanobbs` does not share some of the philosophical views from the +[suckless project](https://suckless.org). However, it still strives towards +portability, minimalism, simplicity and efficiency. + +## Features + +- No JavaScript. +- Typical forums software features: categories, sections, topics and posts. +- Create/delete users from the web interface. +- Uses [`libweb`](https://gitea.privatedns.org/xavi/libweb), a tiny web framework. +- Uses [`libsodium`](https://www.libsodium.org/) as its cryptography backend. +- Uses [SQLite](https://sqlite.org/) as its database backend. + +### TLS + +In order to maintain simplicity and reduce the risk for security bugs, `nanobbs` +does **not** implement TLS support. Instead, this should be provided by a +reverse proxy, such as [`caddy`](https://caddyserver.com/). + +### Root permissions + +`nanobbs` is expected to listen to connections from any port number so that `root` +access is not required. So, in order to avoid the risk for security bugs, +**please do not run `nanobbs` as `root`**. + +## Requirements + +- A POSIX environment. +- [`libsodium`](https://www.libsodium.org/). +- [SQLite](https://sqlite.org/) >= 3.0.0 (tentative). +- [`dynstr`](https://gitea.privatedns.org/xavi/dynstr) +(provided as a `git` submodule by `libweb`). +- [`libweb`](https://gitea.privatedns.org/xavi/libweb) +(provided as a `git` submodule). +- CMake (optional). + +### Ubuntu / Debian + +#### Mandatory packages + +```sh +sudo apt install build-essential libsqlite3-dev libsodium-dev +``` + +#### Optional packages + +```sh +sudo apt install cmake +``` + +## How to use +### Build + +Two build environments are provided for `nanobbs` - feel free to choose any of +them: + +- A [`configure`](configure) POSIX shell and mostly POSIX-compliant +[`Makefile`](Makefile). +- A [`CMakeLists.txt`](CMakeLists.txt). + +`nanobbs` can be built using the standard build process: + +#### Make + +```sh +$ ./configure +$ make +``` + +#### CMake + +```sh +$ cmake -B build +$ cmake --build build/ +``` + +### Setting up + +`nanobbs` consumes a path to a directory with the following tree structure: + +``` +. +├── nanobbs.db +├── style.css +└── TERMS +``` + +Where: + +- `nanobbs.db` is the SQLite database. + - **Note:** `nanobbs` creates a database with one administrator account, + namely `admin`, if not found, with file mode bits set to `0600`. +- `style.css` is the site stylesheet. It can be freely modified. + - **Note:** `nanobbs` creates a default stylesheet file, if not found. +- `TERMS` is a text file containing the terms of service for the instance. +It can be freely modified. + - **Note:** `nanobbs` creates a default terms file, if not found. + +**Note:** `nanobbs` creates the given directory if it does not exist. + +### Running + +To run `nanobbs`, simply run the executable with the path to a directory including +the files listed above. By default, `nanobbs` will listen to incoming connections +on a random TCP port number. To set a specific port number, use the `-p` +command line option. For example: + +```sh +nanobbs -p 7822 ~/my-db/ +``` + +`nanobbs` requires a temporary directory where files uploaded by users are +temporarily stored until moved to the user directory. By default, `nanobbs` +attempts to retrieve the path to the temporary directory by inspecting the +`TMPDIR` environment variable, and falls back to `/tmp` if undefined. + +If a custom temporary directory is required, it can be defined via command +line option `-t`. For example: + +```sh +nanobbs -t ~/my-tmp -p 7822 ~/my-db +``` + +**Note:** system-level temporary directories such as `/tmp` might reside +on a filesytem different than the one where the database resides. This +would force `nanobbs` to copy the contents from uploaded files from the +temporary directory to the database, which might be an expensive operation. +Therefore, in order to avoid expensive copies, define a custom temporary +directory that resides on the same filesystem. + +## Why this project? + +When looking up a forums software for +[Speed Dreams](https://www.speed-dreams.net/), traditional forums software +solutions had been considered, such as [phpBB](https://www.phpbb.com/), +[myBB](https://mybb.com/) or [Discourse](https://www.discourse.org/), +yet raised concerns related to perceived software bloat and/or excessive +use of client-side JavaScript. + +As of the time of this writing, there was no forums software written in C +other than `nanobbs`, +[according to Wikipedia](https://en.wikipedia.org/wiki/Comparison_of_Internet_forum_software). +Since [`slcl`](https://gitea.privatedns.org/xavi/slcl), another project with +the same philosophy, was motivated by similar goals back then, `nanobbs` was seen +as a good opportunity to show how a solution written in C can be both simple, +efficient and safe. + +## License + +``` +nanobbs, a tiny forums software. +Copyright (C) 2025-2026 Xavier Del Campo Romero + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Affero General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Affero General Public License for more details. + +You should have received a copy of the GNU Affero General Public License +along with this program. If not, see . +``` + +Also, see [`LICENSE`](LICENSE). diff --git a/astrftime.c b/astrftime.c new file mode 100644 index 0000000..4c10654 --- /dev/null +++ b/astrftime.c @@ -0,0 +1,58 @@ +#define _POSIX_C_SOURCE 200809L + +#include "utils.h" +#include +#include +#include +#include +#include +#include + +char *astrftime(const char *const fmt, const struct tm *const tm) +{ + char *ret = NULL, *s = NULL; + size_t n = sizeof "."; + const locale_t l = newlocale(LC_TIME_MASK, "POSIX", (locale_t)0); + + if (l == (locale_t)0) + { + fprintf(stderr, "%s: newlocale(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(s = malloc(n))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto end; + } + + for (;;) + { + const int res = strftime_l(s, n, fmt, tm, l); + + if (!res) + { + char *const ss = realloc(s, ++n); + + if (!s) + { + fprintf(stderr, "%s: realloc(3): %s\n", __func__, + strerror(errno)); + goto end; + } + + s = ss; + } + else + break; + } + + ret = s; + +end: + + if (!ret) + free(s); + + freelocale(l); + return ret; +} diff --git a/auth.c b/auth.c new file mode 100644 index 0000000..f8fd6bd --- /dev/null +++ b/auth.c @@ -0,0 +1,327 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "auth.h" +#include "db.h" +#include "defs.h" +#include "endpoints.h" +#include "jwt.h" +#include "op.h" +#include +#include +#include +#include +#include +#include +#include +#include + +struct validate +{ + bool valid; + unsigned long id; + enum auth_role role; + sqlite3 *db; + auth_fn fn; + void *user; +}; + +static void free_validate(void *const p) +{ + int error; + struct validate *const v = p; + + if (!v) + return; + else if ((error = sqlite3_close(v->db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(v); +} + +static int check_role(const char *const s, enum auth_role *const out) +{ + static const struct r + { + const char *s; + enum auth_role role; + } roles[] = + { + {"admin", AUTH_ROLE_ADMIN}, + {"mod", AUTH_ROLE_MOD}, + {"user", AUTH_ROLE_USER}, + {"banned", AUTH_ROLE_BANNED} + }; + + for (size_t i = 0; i < sizeof roles / sizeof *roles; i++) + { + const struct r *const r = &roles[i]; + + if (!strcmp(s, r->s)) + { + *out = r->role; + return 0; + } + } + + fprintf(stderr, "%s: invalid role: %s\n", __func__, s); + return -1; +} + +static int end(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct validate *const v = args; + + if (!v->valid) + ret = v->fn(p, r, v->user, v->db, NULL); + else + { + const struct http_cookie *const c = &p->cookie; + const char *const username = c->field; + const struct auth_user u = + { + .username = username, + .role = v->role, + .id = v->id + }; + + ret = v->fn(p, r, v->user, v->db, &u); + } + + free(v); + return ret; +} + +static int signkey(const struct http_cookie *const c, const char *const key, + struct validate *const v) +{ + int ret = -1; + cJSON *j = NULL; + unsigned char dkey[crypto_auth_hmacsha256_KEYBYTES]; + const size_t len = strlen(key), explen = sizeof dkey * 2; + const cJSON *u; + const char *user; + + if (len != explen) + { + fprintf(stderr, "%s: key size mismatch, got %zu, expected %zu\n", + __func__, len, explen); + goto end; + } + else if (sodium_hex2bin(dkey, sizeof dkey, key, len, NULL, NULL, NULL)) + { + fprintf(stderr, "%s: sodium_hex2bin failed\n", __func__); + goto end; + } + else if ((ret = jwt_decode(c->value, dkey, sizeof dkey, &j))) + { + if (ret < 0) + fprintf(stderr, "%s: jwt_check failed\n", __func__); + + goto end; + } + else if (!(u = cJSON_GetObjectItem(j, "name")) + || !(user = cJSON_GetStringValue(u)) + || strcmp(user, c->field)) + { + ret = 1; + goto end; + } + + ret = 0; + +end: + cJSON_Delete(j); + return ret; +} + +static int row(sqlite3_stmt *const stmt, const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, error; + struct validate *const v = args; + sqlite3 *const db = v->db; + char *const key = db_str(db, stmt, "signkey"), *name = NULL; + enum auth_role role; + unsigned id; + + if (!key) + { + fprintf(stderr, "%s: db_str %s failed\n", __func__, "signkey"); + goto end; + } + else if ((ret = db_uint(db, stmt, "id", &id))) + { + fprintf(stderr, "%s: db_uint %s failed\n", __func__, "id"); + goto end; + } + else if (!(name = db_str(db, stmt, "name"))) + { + fprintf(stderr, "%s: db_str %s failed\n", __func__, "name"); + goto end; + } + else if (check_role(name, &role)) + { + fprintf(stderr, "%s: role failed\n", __func__); + goto end; + } + else if ((error = signkey(&p->cookie, key, v))) + { + if (error < 0) + { + fprintf(stderr, "%s: signkey failed\n", __func__); + goto end; + } + } + else if (!error) + { + v->valid = true; + v->id = id; + v->role = role; + } + + ret = 0; + +end: + free(name); + free(key); + return ret; +} + +static int check_username(const char *const name) +{ + return strspn(name, USER_SYMS) != strlen(name); +} + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + const struct http_cookie *const c = &p->cookie; + const char *const username = c->field; + struct validate *const v = args; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "SELECT users.id, users.signkey, roles.name " + "FROM users JOIN roles ON users.roleid = roles.id " + "WHERE users.name = '%s';", username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_validate, + .end = end, + .row = row, + .args = v + }; + + if (!op_run(v->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + + if (ret) + free_validate(v); + + dynstr_free(&d); + return ret; +} + +static int open_db(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct validate *const v = args; + const struct cfg *const cfg = user; + const int error = db_open(cfg->dir, &v->db); + + if (error != SQLITE_OK) + { + if (error != SQLITE_BUSY) + { + fprintf(stderr, "%s: db_open: %s\n", __func__, + sqlite3_errstr(error)); + goto failure; + } + } + else + *r = (const struct http_response) + { + .step.payload = setup, + .args = v + }; + + return 0; + +failure: + free_validate(v); + return -1; +} + +int auth_validate(const struct http_payload *const p, + struct http_response *const r, void *const user, const auth_fn fn) +{ + int ret = -1; + struct validate *v = NULL; + const struct http_cookie *const c = &p->cookie; + const char *const username = c->field; + + if (!username || !c->value || check_username(username)) + { + ret = 1; + goto failure; + } + else if (!(v = malloc(sizeof *v))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + *r = (const struct http_response) + { + .step.payload = open_db, + .free = free_validate, + .args = v + }; + + *v = (const struct validate) + { + .fn = fn, + .user = user + }; + + return 0; + +failure: + free(v); + return ret; +} diff --git a/auth.h b/auth.h new file mode 100644 index 0000000..de3511f --- /dev/null +++ b/auth.h @@ -0,0 +1,45 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef AUTH_H +#define AUTH_H + +#include +#include + +struct auth_user +{ + const char *username; + unsigned long id; + + enum auth_role + { + AUTH_ROLE_BANNED, + AUTH_ROLE_USER, + AUTH_ROLE_MOD, + AUTH_ROLE_ADMIN + } role; +}; + +typedef int (*auth_fn)(const struct http_payload *p, struct http_response *r, + void *, sqlite3 *, const struct auth_user *); + +int auth_validate(const struct http_payload *p, struct http_response *r, + void *user, auth_fn fn); + +#endif diff --git a/cmake/FindGraphicsMagick.cmake b/cmake/FindGraphicsMagick.cmake new file mode 100644 index 0000000..2182849 --- /dev/null +++ b/cmake/FindGraphicsMagick.cmake @@ -0,0 +1,310 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#[=======================================================================[.rst: +FindGraphicsMagick +--------------- + +Find GraphicsMagick binary suite. + +.. versionadded:: 3.9 + Added support for GraphicsMagick 7. + +This module will search for a set of GraphicsMagick tools specified as +components in the :command:`find_package` call. Typical components include, +but are not limited to (future versions of GraphicsMagick might have +additional components not listed here): + +:: + + animate + compare + composite + conjure + convert + display + identify + import + mogrify + montage + stream + + + +If no component is specified in the :command:`find_package` call, then it only +searches for the GraphicsMagick executable directory. This code defines +the following variables: + +:: + + GraphicsMagick_FOUND - TRUE if all components are found. + GraphicsMagick_EXECUTABLE_DIR - Full path to executables directory. + GraphicsMagick__FOUND - TRUE if is found. + GraphicsMagick__EXECUTABLE - Full path to executable. + GraphicsMagick_VERSION_STRING - the version of GraphicsMagick found + (since CMake 2.8.8) + + + +``GraphicsMagick_VERSION_STRING`` will not work for old versions like 5.2.3. + +There are also components for the following GraphicsMagick APIs: + +:: + + Magick++ + MagickWand + MagickCore + + + +For these components the following variables are set: + +:: + + GraphicsMagick_FOUND - TRUE if all components are found. + GraphicsMagick_INCLUDE_DIRS - Full paths to all include dirs. + GraphicsMagick_LIBRARIES - Full paths to all libraries. + GraphicsMagick__FOUND - TRUE if is found. + GraphicsMagick__INCLUDE_DIRS - Full path to include dirs. + GraphicsMagick__LIBRARIES - Full path to libraries. + + + +Example Usages: + +:: + + find_package(GraphicsMagick) + find_package(GraphicsMagick COMPONENTS convert) + find_package(GraphicsMagick COMPONENTS convert mogrify display) + find_package(GraphicsMagick COMPONENTS Magick++) + find_package(GraphicsMagick COMPONENTS Magick++ convert) + + + +Note that the standard :command:`find_package` features are supported (i.e., +``QUIET``, ``REQUIRED``, etc.). +#]=======================================================================] + +find_package(PkgConfig QUIET) + +#--------------------------------------------------------------------- +# Helper functions +#--------------------------------------------------------------------- +function(FIND_GRAPHICSMAGICK_API component header) + set(GraphicsMagick_${component}_FOUND FALSE PARENT_SCOPE) + + pkg_check_modules(PC_${component} QUIET ${component}) + + find_path(GraphicsMagick_${component}_INCLUDE_DIR + NAMES ${header} + HINTS + ${PC_${component}_INCLUDEDIR} + ${PC_${component}_INCLUDE_DIRS} + PATHS + ${GraphicsMagick_INCLUDE_DIRS} + "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GraphicsMagick\\Current;BinPath]/include" + PATH_SUFFIXES + GraphicsMagick GraphicsMagick-6 GraphicsMagick-7 + DOC "Path to the GraphicsMagick arch-independent include dir." + NO_DEFAULT_PATH + ) + find_path(GraphicsMagick_${component}_ARCH_INCLUDE_DIR + NAMES magick/magick-baseconfig.h + HINTS + ${PC_${component}_INCLUDEDIR} + ${PC_${component}_INCLUDE_DIRS} + PATHS + ${GraphicsMagick_INCLUDE_DIRS} + "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GraphicsMagick\\Current;BinPath]/include" + PATH_SUFFIXES + GraphicsMagick GraphicsMagick-6 GraphicsMagick-7 + DOC "Path to the GraphicsMagick arch-specific include dir." + NO_DEFAULT_PATH + ) + find_library(GraphicsMagick_${component}_LIBRARY + NAMES ${ARGN} + HINTS + ${PC_${component}_LIBDIR} + ${PC_${component}_LIB_DIRS} + PATHS + "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GraphicsMagick\\Current;BinPath]/lib" + DOC "Path to the GraphicsMagick Magick++ library." + NO_DEFAULT_PATH + ) + + # old version have only indep dir + if(GraphicsMagick_${component}_INCLUDE_DIR AND GraphicsMagick_${component}_LIBRARY) + set(GraphicsMagick_${component}_FOUND TRUE PARENT_SCOPE) + + # Construct per-component include directories. + set(GraphicsMagick_${component}_INCLUDE_DIRS + ${GraphicsMagick_${component}_INCLUDE_DIR} + ) + if(GraphicsMagick_${component}_ARCH_INCLUDE_DIR) + list(APPEND GraphicsMagick_${component}_INCLUDE_DIRS + ${GraphicsMagick_${component}_ARCH_INCLUDE_DIR}) + endif() + list(REMOVE_DUPLICATES GraphicsMagick_${component}_INCLUDE_DIRS) + set(GraphicsMagick_${component}_INCLUDE_DIRS + ${GraphicsMagick_${component}_INCLUDE_DIRS} PARENT_SCOPE) + + # Add the per-component include directories to the full include dirs. + list(APPEND GraphicsMagick_INCLUDE_DIRS ${GraphicsMagick_${component}_INCLUDE_DIRS}) + list(REMOVE_DUPLICATES GraphicsMagick_INCLUDE_DIRS) + set(GraphicsMagick_INCLUDE_DIRS ${GraphicsMagick_INCLUDE_DIRS} PARENT_SCOPE) + + list(APPEND GraphicsMagick_LIBRARIES + ${GraphicsMagick_${component}_LIBRARY} + ) + set(GraphicsMagick_LIBRARIES ${GraphicsMagick_LIBRARIES} PARENT_SCOPE) + endif() +endfunction() + +function(FIND_GRAPHICSMAGICK_EXE component) + set(_GRAPHICSMAGICK_EXECUTABLE + ${GraphicsMagick_EXECUTABLE_DIR}/${component}${CMAKE_EXECUTABLE_SUFFIX}) + if(EXISTS ${_GRAPHICSMAGICK_EXECUTABLE}) + set(GraphicsMagick_${component}_EXECUTABLE + ${_GRAPHICSMAGICK_EXECUTABLE} + PARENT_SCOPE + ) + set(GraphicsMagick_${component}_FOUND TRUE PARENT_SCOPE) + else() + set(GraphicsMagick_${component}_FOUND FALSE PARENT_SCOPE) + endif() +endfunction() + +#--------------------------------------------------------------------- +# Start Actual Work +#--------------------------------------------------------------------- +# Try to find a GraphicsMagick installation binary path. +find_path(GraphicsMagick_EXECUTABLE_DIR + NAMES mogrify${CMAKE_EXECUTABLE_SUFFIX} + PATHS + "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GraphicsMagick\\Current;BinPath]" + DOC "Path to the GraphicsMagick binary directory." + NO_DEFAULT_PATH + ) +find_path(GraphicsMagick_EXECUTABLE_DIR + NAMES mogrify${CMAKE_EXECUTABLE_SUFFIX} + ) + +# Find each component. Search for all tools in same dir +# ; otherwise they should be found +# independently and not in a cohesive module such as this one. +unset(GraphicsMagick_REQUIRED_VARS) +unset(GraphicsMagick_DEFAULT_EXECUTABLES) +foreach(component ${GraphicsMagick_FIND_COMPONENTS} + # DEPRECATED: forced components for backward compatibility + gm + ) + if(component STREQUAL "Magick++") + FIND_GRAPHICSMAGICK_API(Magick++ Magick++.h + Magick++ CORE_RL_Magick++_ + Magick++-6 Magick++-7 + Magick++-Q8 Magick++-Q16 Magick++-Q16HDRI Magick++-Q8HDRI + Magick++-6.Q64 Magick++-6.Q32 Magick++-6.Q64HDRI Magick++-6.Q32HDRI + Magick++-6.Q16 Magick++-6.Q8 Magick++-6.Q16HDRI Magick++-6.Q8HDRI + Magick++-7.Q64 Magick++-7.Q32 Magick++-7.Q64HDRI Magick++-7.Q32HDRI + Magick++-7.Q16 Magick++-7.Q8 Magick++-7.Q16HDRI Magick++-7.Q8HDRI + ) + list(APPEND GraphicsMagick_REQUIRED_VARS GraphicsMagick_Magick++_LIBRARY) + elseif(component STREQUAL "MagickWand") + FIND_GRAPHICSMAGICK_API(MagickWand "wand/MagickWand.h;MagickWand/MagickWand.h" + Wand MagickWand CORE_RL_wand_ CORE_RL_MagickWand_ + MagickWand-6 MagickWand-7 + MagickWand-Q16 MagickWand-Q8 MagickWand-Q16HDRI MagickWand-Q8HDRI + MagickWand-6.Q64 MagickWand-6.Q32 MagickWand-6.Q64HDRI MagickWand-6.Q32HDRI + MagickWand-6.Q16 MagickWand-6.Q8 MagickWand-6.Q16HDRI MagickWand-6.Q8HDRI + MagickWand-7.Q64 MagickWand-7.Q32 MagickWand-7.Q64HDRI MagickWand-7.Q32HDRI + MagickWand-7.Q16 MagickWand-7.Q8 MagickWand-7.Q16HDRI MagickWand-7.Q8HDRI + ) + list(APPEND GraphicsMagick_REQUIRED_VARS GraphicsMagick_MagickWand_LIBRARY) + elseif(component STREQUAL "MagickCore") + FIND_GRAPHICSMAGICK_API(MagickCore "magick/MagickCore.h;MagickCore/MagickCore.h" + Magick MagickCore CORE_RL_magick_ CORE_RL_MagickCore_ + MagickCore-6 MagickCore-7 + MagickCore-Q16 MagickCore-Q8 MagickCore-Q16HDRI MagickCore-Q8HDRI + MagickCore-6.Q64 MagickCore-6.Q32 MagickCore-6.Q64HDRI MagickCore-6.Q32HDRI + MagickCore-6.Q16 MagickCore-6.Q8 MagickCore-6.Q16HDRI MagickCore-6.Q8HDRI + MagickCore-7.Q64 MagickCore-7.Q32 MagickCore-7.Q64HDRI MagickCore-7.Q32HDRI + MagickCore-7.Q16 MagickCore-7.Q8 MagickCore-7.Q16HDRI MagickCore-7.Q8HDRI + ) + list(APPEND GraphicsMagick_REQUIRED_VARS GraphicsMagick_MagickCore_LIBRARY) + else() + if(GraphicsMagick_EXECUTABLE_DIR) + FIND_GRAPHICSMAGICK_EXE(${component}) + endif() + + if(GraphicsMagick_FIND_COMPONENTS) + list(FIND GraphicsMagick_FIND_COMPONENTS ${component} is_requested) + if(is_requested GREATER -1) + list(APPEND GraphicsMagick_REQUIRED_VARS GraphicsMagick_${component}_EXECUTABLE) + endif() + elseif(GraphicsMagick_${component}_EXECUTABLE) + # if no components were requested explicitly put all (default) executables + # in the list + list(APPEND GraphicsMagick_DEFAULT_EXECUTABLES GraphicsMagick_${component}_EXECUTABLE) + endif() + endif() +endforeach() + +if(NOT GraphicsMagick_FIND_COMPONENTS AND NOT GraphicsMagick_DEFAULT_EXECUTABLES) + # No components were requested, and none of the default components were + # found. Just insert mogrify into the list of the default components to + # find so FPHSA below has something to check + list(APPEND GraphicsMagick_REQUIRED_VARS GraphicsMagick_mogrify_EXECUTABLE) +elseif(GraphicsMagick_DEFAULT_EXECUTABLES) + list(APPEND GraphicsMagick_REQUIRED_VARS ${GraphicsMagick_DEFAULT_EXECUTABLES}) +endif() + +set(GraphicsMagick_INCLUDE_DIRS ${GraphicsMagick_INCLUDE_DIRS}) +set(GraphicsMagick_LIBRARIES ${GraphicsMagick_LIBRARIES}) + +if(GraphicsMagick_mogrify_EXECUTABLE) + execute_process(COMMAND ${GraphicsMagick_mogrify_EXECUTABLE} -version + OUTPUT_VARIABLE graphicsmagick_version + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + if(graphicsmagick_version MATCHES "^Version: GraphicsMagick ([-0-9\\.]+)") + set(GraphicsMagick_VERSION_STRING "${CMAKE_MATCH_1}") + endif() + unset(graphicsmagick_version) +endif() + +#--------------------------------------------------------------------- +# Standard Package Output +#--------------------------------------------------------------------- +include(FindPackageHandleStandardArgs) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(GraphicsMagick + REQUIRED_VARS ${GraphicsMagick_REQUIRED_VARS} + VERSION_VAR GraphicsMagick_VERSION_STRING + ) +# Maintain consistency with all other variables. +set(GraphicsMagick_FOUND ${GRAPHICSMAGICK_FOUND}) + +#--------------------------------------------------------------------- +# DEPRECATED: Setting variables for backward compatibility. +#--------------------------------------------------------------------- +set(GRAPHICSMAGICK_BINARY_PATH ${GraphicsMagick_EXECUTABLE_DIR} + CACHE PATH "Path to the GraphicsMagick binary directory.") +set(GRAPHICSMAGICK_CONVERT_EXECUTABLE ${GraphicsMagick_convert_EXECUTABLE} + CACHE FILEPATH "Path to GraphicsMagick's convert executable.") +set(GRAPHICSMAGICK_MOGRIFY_EXECUTABLE ${GraphicsMagick_mogrify_EXECUTABLE} + CACHE FILEPATH "Path to GraphicsMagick's mogrify executable.") +set(GRAPHICSMAGICK_IMPORT_EXECUTABLE ${GraphicsMagick_import_EXECUTABLE} + CACHE FILEPATH "Path to GraphicsMagick's import executable.") +set(GRAPHICSMAGICK_MONTAGE_EXECUTABLE ${GraphicsMagick_montage_EXECUTABLE} + CACHE FILEPATH "Path to GraphicsMagick's montage executable.") +set(GRAPHICSMAGICK_COMPOSITE_EXECUTABLE ${GraphicsMagick_composite_EXECUTABLE} + CACHE FILEPATH "Path to GraphicsMagick's composite executable.") +mark_as_advanced( + GRAPHICSMAGICK_BINARY_PATH + GRAPHICSMAGICK_CONVERT_EXECUTABLE + GRAPHICSMAGICK_MOGRIFY_EXECUTABLE + GRAPHICSMAGICK_IMPORT_EXECUTABLE + GRAPHICSMAGICK_MONTAGE_EXECUTABLE + GRAPHICSMAGICK_COMPOSITE_EXECUTABLE + ) diff --git a/cmake/Findlibsodium.cmake b/cmake/Findlibsodium.cmake new file mode 100644 index 0000000..5bf917a --- /dev/null +++ b/cmake/Findlibsodium.cmake @@ -0,0 +1,29 @@ +find_package(PkgConfig) + +if(PKG_CONFIG_FOUND) + pkg_check_modules(libsodium libsodium) +endif() + +if(NOT libsodium_FOUND) + find_library(libsodium_LIBRARIES name sodium) + find_file(libsodium_INCLUDE_DIRS NAMES + sodium.h + sodium/core.h + PATH_SUFFIXES include/ include/sodium) + + if (libsodium_LIBRARIES STREQUAL "libsodium_LIBRARIES-NOTFOUND") + message(FATAL_ERROR "libsodium not found") + elseif (libsodium_INCLUDE_DIRS STREQUAL "libsodium_INCLUDE_DIRS-NOTFOUND") + message(FATAL_ERROR "libsodium headers not found") + endif() +endif() + +message("libsodium_LINK_LIBRARIES=${libsodium_LINK_LIBRARIES}") +message("libsodium_INCLUDE_DIRS=${libsodium_INCLUDE_DIRS}") + +if(NOT TARGET libsodium) + add_library(libsodium INTERFACE IMPORTED) + set_target_properties(libsodium PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES ${libsodium_INCLUDE_DIRS} + INTERFACE_LINK_LIBRARIES ${libsodium_LINK_LIBRARIES}) +endif() diff --git a/cmake/Findweb.cmake b/cmake/Findweb.cmake new file mode 100644 index 0000000..a5d1d68 --- /dev/null +++ b/cmake/Findweb.cmake @@ -0,0 +1,24 @@ +mark_as_advanced(WEB_LIBRARY WEB_INCLUDE_DIR) +find_library(WEB_LIBRARY NAMES libweb web) + +find_path(WEB_INCLUDE_DIR + NAMES + handler.h + html.h + http.h + server.h + wildcard_cmp.h + PATH_SUFFIXES libweb include/libweb) + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(web + DEFAULT_MSG WEB_LIBRARY WEB_INCLUDE_DIR) + +if(WEB_FOUND) + if(NOT TARGET web) + add_library(web UNKNOWN IMPORTED) + set_target_properties(web PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${WEB_INCLUDE_DIR}" + IMPORTED_LOCATION "${WEB_LIBRARY}") + endif() +endif() diff --git a/configure b/configure new file mode 100755 index 0000000..1fff315 --- /dev/null +++ b/configure @@ -0,0 +1,262 @@ +#! /bin/sh + +set -e + +default_prefix=/usr/local +prefix=$default_prefix +default_CC='c99' +# FILE_OFFSET_BITS=64 is required for large file support on 32-bit platforms. +default_CFLAGS='-O1 -Wall -MD' +default_LDFLAGS="" + +CC=${CC:-$default_CC} + +help() +{ + cat <<-EOF +$0 [OPTION ...] + +--prefix Set installation directory [$default_prefix] + +Some influential environment variables: + CC C compiler [$default_CC] + CFLAGS C compiler flags [$default_CFLAGS] + LDFLAGS Link-time flags [$default_LDFLAGS] +EOF +} + +while true; do + split_arg=0 + + if printf "%s" "$1" | grep -e '=' > /dev/null + then + key="$(printf "%s" "$1" | cut -d '=' -f1)" + value="$(printf "%s" "$1" | cut -d '=' -f2)" + split_arg=1 + else + key="$1" + value="$2" + fi + + case "$key" in + --prefix ) prefix="$value"; shift; test $split_arg -eq 0 && shift ;; + -h | --help ) help; exit 0 ;; + * ) test "$1" != "" && help && exit 1 || break ;; + esac +done + +if pkg-config sqlite3 +then + proj_CFLAGS="$proj_CFLAGS $(pkg-config --cflags sqlite3)" + proj_LDFLAGS="$proj_LDFLAGS $(pkg-config --libs sqlite3)" + tk_LDFLAGS="$tk_LDFLAGS $(pkg-config --libs sqlite3)" +else + echo "Error: sqlite3 not found" >&2 + exit 1 +fi + +if pkg-config libcjson +then + proj_CFLAGS="$proj_CFLAGS $(pkg-config --cflags libcjson)" + proj_LDFLAGS="$proj_LDFLAGS $(pkg-config --libs libcjson)" + tk_LDFLAGS="$tk_LDFLAGS $(pkg-config --libs libcjson)" +else + echo "Error: libcjson not found." >&2 + exit 1 +fi + +if pkg-config libsodium +then + proj_CFLAGS="$proj_CFLAGS $(pkg-config --cflags libsodium)" + proj_LDFLAGS="$proj_LDFLAGS $(pkg-config --libs libsodium)" + tk_LDFLAGS="$tk_LDFLAGS $(pkg-config --libs libsodium)" +else + echo "Error: libsodium not found" >&2 + exit 1 +fi + +if pkg-config dynstr +then + in_tree_dynstr=0 + proj_CFLAGS="$proj_CFLAGS $(pkg-config --cflags dynstr)" + proj_LDFLAGS="$proj_LDFLAGS $(pkg-config --libs dynstr)" + tk_LDFLAGS="$tk_LDFLAGS $(pkg-config --libs dynstr)" +else + echo "Info: dynstr not found. Using in-tree copy" >&2 + in_tree_dynstr=1 + proj_CFLAGS="$proj_CFLAGS -Ilibweb/dynstr/include" + proj_LDFLAGS="$proj_LDFLAGS -Llibweb/dynstr -ldynstr" + tk_LDFLAGS="$tk_LDFLAGS -Llibweb/dynstr -ldynstr" +fi + +if pkg-config libweb +then + in_tree_libweb=0 + proj_CFLAGS="$proj_CFLAGS $(pkg-config --cflags libweb)" + proj_LDFLAGS="$proj_LDFLAGS $(pkg-config --libs libweb)" +else + echo "Info: libweb not found. Using in-tree copy" >&2 + in_tree_libweb=1 + proj_CFLAGS="$proj_CFLAGS -Ilibweb/include" + proj_LDFLAGS="$proj_LDFLAGS -Llibweb -lweb" + + if [ -f libweb/Makefile ] + then + echo "Info: Re-configuring libweb" >&2 + (cd libweb && CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" ./configure \ + --prefix="$prefix") + fi +fi + +proj_CFLAGS="$proj_CFLAGS $default_CFLAGS $CFLAGS" +proj_LDFLAGS="$proj_LDFLAGS $default_LDFLAGS $LDFLAGS" +tk_LDFLAGS="$tk_LDFLAGS $LDFLAGS" + +cleanup() +{ + rm -f $F +} + +F=/tmp/Makefile.nanobbs +trap cleanup EXIT + +cat < $F +.POSIX: + +CC = $CC +PREFIX = $prefix +DST = $prefix/bin +CFLAGS = $CFLAGS +LDFLAGS = $LDFLAGS +PROJ_CFLAGS = $proj_CFLAGS +PROJ_LDFLAGS = $proj_LDFLAGS +TK_LDFLAGS = $tk_LDFLAGS +EOF + +cat <<"EOF" >> $F +PROJECT = nanobbs +DEPS = $(OBJECTS:.o=.d) +OBJECTS = \ + auth.o \ + astrftime.o \ + db.o \ + db_post.o \ + db_section.o \ + db_topic.o \ + default_prv_policy.o \ + default_style.o \ + default_terms.o \ + ep_create.o \ + ep_index.o \ + ep_login.o \ + ep_logout.o \ + ep_passwd.o \ + ep_signup.o \ + ep_style.o \ + ep_ucp.o \ + ep_view.o \ + form_badreq.o \ + form_category.o \ + form_footer.o \ + form_head.o \ + form_login.o \ + form_post.o \ + form_section.o \ + form_shortpwd.o \ + form_topic.o \ + form_unauthorized.o \ + gencookie.o \ + getul.o \ + getul_n.o \ + jwt.o \ + login_get.o \ + main.o \ + op.o \ + sanitize.o + +TK_OBJECTS = \ + jwt.o \ + tokengen.o + +all: $(PROJECT) tokengen + +.c.o: + $(CC) $(PROJ_CFLAGS) -c $< -o $@ + +install: all + mkdir -p $(DST) + install nanobbs tokengen $(DST) + +cd doc && $(MAKE) PREFIX=$(PREFIX) install + +FORCE: +$(PROJECT): $(OBJECTS) + $(CC) $(OBJECTS) $(PROJ_LDFLAGS) -o $@ + +tokengen: $(TK_OBJECTS) + $(CC) $(TK_OBJECTS) $(TK_LDFLAGS) -o $@ +EOF + +if [ $in_tree_dynstr -ne 0 ] +then +cat <<"EOF" >> $F +DYNSTR = libweb/dynstr/libdynstr.a +$(PROJECT) tokengen: $(DYNSTR) +$(DYNSTR): FORCE + +cd libweb/dynstr && $(MAKE) CC=$(CC) +EOF +fi + +if [ $in_tree_libweb -ne 0 ] +then +cat <<"EOF" >> $F +LIBWEB_MK = libweb/Makefile +$(LIBWEB_MK): + cd libweb && CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \ + ./configure --prefix=$(PREFIX) +LIBWEB = libweb/libweb.a +$(PROJECT): $(LIBWEB) +$(LIBWEB): $(LIBWEB_MK) FORCE + +cd libweb && $(MAKE) CC=$(CC) +libweb: $(LIBWEB) +EOF +fi + +cat <<"EOF" >> $F +clean: + rm -f $(OBJECTS) $(TK_OBJECTS) $(DEPS) +EOF + +if [ $in_tree_dynstr -ne 0 ] +then +cat <<"EOF" >> $F + +cd libweb/dynstr && $(MAKE) clean +EOF +fi + +if [ $in_tree_libweb -ne 0 ] +then +cat <<"EOF" >> $F + +test -f $(LIBWEB_MK) && cd libweb && $(MAKE) clean || : +EOF +fi + +cat <<"EOF" >> $F +distclean: clean + rm -f nanobbs tokengen + rm Makefile +EOF + +# dynstr has no distclean target as of the time of this writing. + +if [ $in_tree_libweb -ne 0 ] +then +cat <<"EOF" >> $F + +test -f $(LIBWEB_MK) && cd libweb && $(MAKE) distclean || : +EOF +fi + +cat <<"EOF" >> $F +-include $(DEPS) +EOF + +mv $F Makefile diff --git a/db.c b/db.c new file mode 100644 index 0000000..1feb927 --- /dev/null +++ b/db.c @@ -0,0 +1,188 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "db.h" +#include "defs.h" +#include +#include +#include +#include +#include +#include +#include +#include + +static int column(sqlite3 *const db, sqlite3_stmt *const stmt, + const char *const name) +{ + const int n = sqlite3_data_count(stmt); + + if (!n) + { + fprintf(stderr, "%s: sqlite3_data_count: %s\n", __func__, + sqlite3_errmsg(db)); + return -1; + } + + for (int i = 0; i < n; i++) + { + const char *const col = sqlite3_column_name(stmt, i); + + if (!col) + { + fprintf(stderr, "%s: sqlite3_column_name: %s\n", __func__, + sqlite3_errmsg(db)); + return -1; + } + else if (!strcmp(col, name)) + return i; + } + + fprintf(stderr, "%s: could not find column \"%s\"\n", __func__, name); + return -1; +} + +int db_int(sqlite3 *const db, sqlite3_stmt *const stmt, const char *const name, + int *const out) +{ + const int col = column(db, stmt, name); + + if (col < 0) + return -1; + + *out = sqlite3_column_int(stmt, col); + return 0; +} + +int db_uint(sqlite3 *const db, sqlite3_stmt *const stmt, const char *const name, + unsigned *const out) +{ + int v; + + if (db_int(db, stmt, name, &v)) + return -1; + else if (v < 0) + { + fprintf(stderr, "%s: unexpected negative value for %s: %d\n", __func__, + name, v); + return -1; + } + + *out = v; + return 0; +} + +int db_bigint(sqlite3 *const db, sqlite3_stmt *const stmt, + const char *const name, long long *const out) +{ + const int col = column(db, stmt, name); + + if (col < 0) + return -1; + + *out = sqlite3_column_int64(stmt, col); + return 0; +} + +int db_biguint(sqlite3 *const db, sqlite3_stmt *const stmt, + const char *const name, unsigned long long *const out) +{ + const int col = column(db, stmt, name); + sqlite3_int64 v; + + if (col < 0 || (v = sqlite3_column_int64(stmt, col)) < 0) + return -1; + + *out = v; + return 0; +} + +char *db_str(sqlite3 *const db, sqlite3_stmt *const stmt, + const char *const name) +{ + char *ret = NULL; + const int col = column(db, stmt, name); + + if (col < 0) + return NULL; + + const unsigned char *const s = sqlite3_column_text(stmt, col); + + if (!s) + { + fprintf(stderr, "%s: sqlite3_column_text: %s\n", __func__, + sqlite3_errmsg(db)); + goto failure; + } + else if (!(ret = strndup((const char *)s, sqlite3_column_bytes(stmt, col)))) + { + fprintf(stderr, "%s: strndup(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + return ret; + +failure: + free(ret); + return NULL; +} + +int db_rollback(sqlite3 *const db) +{ + char *msg = NULL; + const int e = sqlite3_exec(db, "ROLLBACK;", NULL, NULL, &msg); + + if (e != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_exec: %s, msg=%s\n", __func__, + sqlite3_errstr(e), msg); + + sqlite3_free(msg); + return e != SQLITE_OK; +} + +int db_open(const char *const dir, sqlite3 **const out) +{ + int ret = SQLITE_ERROR; + sqlite3 *db; + struct dynstr d; + const mode_t m = umask(S_IWGRP | S_IWOTH | S_IROTH); + + dynstr_init(&d); + + if (dynstr_append(&d, "%s/" PROJECT_NAME ".db", dir)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((ret = sqlite3_open(d.str, &db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_open %s: %s\n", __func__, d.str, + sqlite3_errstr(ret)); + goto end; + } + + *out = db; + ret = 0; + +end: + umask(m); + dynstr_free(&d); + return ret; +} diff --git a/db.h b/db.h new file mode 100644 index 0000000..37219c7 --- /dev/null +++ b/db.h @@ -0,0 +1,69 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef DB_H +#define DB_H + +#include +#include + +struct db_section +{ + unsigned long id, catid; + char *desc, *name; +}; + +struct db_topic +{ + unsigned long id, secid; + char *title; + time_t creat; +}; + +struct db_post +{ + unsigned long id, topid, uid; + char *text; + time_t creat; +}; + +struct db_user +{ + unsigned long id, roleid; + char *name; + time_t creat; +}; + +int db_open(const char *dir, sqlite3 **db); +char *db_str(sqlite3 *db, sqlite3_stmt *stmt, const char *name); +int db_id(sqlite3 *db, sqlite3_stmt *stmt, const char *name, unsigned *out); +int db_int(sqlite3 *db, sqlite3_stmt *stmt, const char *name, int *out); +int db_uint(sqlite3 *db, sqlite3_stmt *stmt, const char *name, unsigned *out); +int db_bigint(sqlite3 *db, sqlite3_stmt *stmt, const char *name, + long long *out); +int db_biguint(sqlite3 *db, sqlite3_stmt *stmt, const char *name, + unsigned long long *out); +int db_section(sqlite3 *db, sqlite3_stmt *stmt, struct db_section *s); +int db_topic(sqlite3 *db, sqlite3_stmt *stmt, struct db_topic *t); +int db_post(sqlite3 *db, sqlite3_stmt *stmt, struct db_post *p); +void db_section_free(struct db_section *s); +void db_topic_free(struct db_topic *t); +void db_post_free(struct db_post *p); +int db_rollback(sqlite3 *db); + +#endif diff --git a/db_post.c b/db_post.c new file mode 100644 index 0000000..2f25ea2 --- /dev/null +++ b/db_post.c @@ -0,0 +1,63 @@ +#define _POSIX_C_SOURCE 200809L + +#include "db.h" +#include +#include +#include +#include + +void db_post_free(struct db_post *const p) +{ + if (!p) + return; + + free(p->text); +} + +int db_post(sqlite3 *const db, sqlite3_stmt *const stmt, struct db_post *const p) +{ + char *text = NULL; + unsigned long long id, uid, topid; + long long creat; + + if (db_biguint(db, stmt, "id", &id)) + { + fprintf(stderr, "%s: failed to get id\n", __func__); + goto failure; + } + else if (db_biguint(db, stmt, "topid", &topid)) + { + fprintf(stderr, "%s: failed to get topic id\n", __func__); + goto failure; + } + else if (db_biguint(db, stmt, "uid", &uid)) + { + fprintf(stderr, "%s: failed to user id\n", __func__); + goto failure; + } + else if (db_bigint(db, stmt, "creat", &creat)) + { + fprintf(stderr, "%s: failed to get creation time\n", __func__); + goto failure; + } + else if (!(text = db_str(db, stmt, "text"))) + { + fprintf(stderr, "%s: failed to get text\n", __func__); + goto failure; + } + + *p = (const struct db_post) + { + .topid = topid, + .creat = creat, + .text = text, + .uid = uid, + .id = id + }; + + return 0; + +failure: + free(text); + return -1; +} diff --git a/db_section.c b/db_section.c new file mode 100644 index 0000000..72aa227 --- /dev/null +++ b/db_section.c @@ -0,0 +1,59 @@ +#define _POSIX_C_SOURCE 200809L + +#include "db.h" +#include +#include +#include +#include + +void db_section_free(struct db_section *const s) +{ + if (!s) + return; + + free(s->name); + free(s->desc); +} + +int db_section(sqlite3 *const db, sqlite3_stmt *const stmt, + struct db_section *const s) +{ + unsigned long long id, catid; + char *name = NULL, *desc = NULL; + + if (db_biguint(db, stmt, "id", &id)) + { + fprintf(stderr, "%s: failed to get id\n", __func__); + goto failure; + } + else if (db_biguint(db, stmt, "catid", &catid)) + { + fprintf(stderr, "%s: failed to get category id\n", __func__); + goto failure; + } + else if (!(name = db_str(db, stmt, "name"))) + { + fprintf(stderr, "%s: failed to get name\n", __func__); + goto failure; + } + else if (!(desc = db_str(db, stmt, "description"))) + { + fprintf(stderr, "%s: failed to get name\n", __func__); + goto failure; + } + + *s = (const struct db_section) + { + .catid = catid, + .name = name, + .desc = desc, + .id = id + }; + + return 0; + +failure: + free(desc); + free(name); + return -1; +} diff --git a/db_topic.c b/db_topic.c new file mode 100644 index 0000000..c07d5ee --- /dev/null +++ b/db_topic.c @@ -0,0 +1,57 @@ +#define _POSIX_C_SOURCE 200809L + +#include "db.h" +#include +#include +#include +#include + +void db_topic_free(struct db_topic *const t) +{ + if (!t) + return; + + free(t->title); +} + +int db_topic(sqlite3 *const db, sqlite3_stmt *const stmt, struct db_topic *const t) +{ + char *title = NULL; + unsigned long long id, secid; + long long creat; + + if (db_biguint(db, stmt, "id", &id)) + { + fprintf(stderr, "%s: failed to get id\n", __func__); + goto failure; + } + else if (db_biguint(db, stmt, "secid", &secid)) + { + fprintf(stderr, "%s: failed to get section id\n", __func__); + goto failure; + } + else if (db_bigint(db, stmt, "creat", &creat)) + { + fprintf(stderr, "%s: failed to get creation time\n", __func__); + goto failure; + } + else if (!(title = db_str(db, stmt, "title"))) + { + fprintf(stderr, "%s: failed to get name\n", __func__); + goto failure; + } + + *t = (const struct db_topic) + { + .secid = secid, + .title = title, + .creat = creat, + .id = id + }; + + return 0; + +failure: + free(title); + return -1; +} diff --git a/default.h b/default.h new file mode 100644 index 0000000..ded67d7 --- /dev/null +++ b/default.h @@ -0,0 +1,10 @@ +#ifndef DEFAULT_H +#define DEFAULT_H + +#include + +extern const char default_style[], default_terms[], default_prv_policy[]; +extern const size_t default_style_len, default_terms_len, + default_prv_policy_len; + +#endif diff --git a/default_prv_policy.c b/default_prv_policy.c new file mode 100644 index 0000000..e9b674a --- /dev/null +++ b/default_prv_policy.c @@ -0,0 +1,30 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#include "default.h" +#include "defs.h" +#include + +const char default_prv_policy[] = + "Please enter your privacy policy here.\n" + "By default, " PROJECT_NAME + " collects usernames, passwords and thumbnails.\n" + "A cookie is sent to the user when logged in.\n" + ; + +const size_t default_prv_policy_len = sizeof default_prv_policy - 1; diff --git a/default_style.c b/default_style.c new file mode 100644 index 0000000..e94301e --- /dev/null +++ b/default_style.c @@ -0,0 +1,63 @@ +#include "default.h" +#include + +const char default_style[] = + "body\n" + "{\n" + " font-family: 'Courier New', Courier, monospace;\n" + "}\n" + "td\n" + "{\n" + " font-size: 14px;\n" + "}\n" + "a\n" + "{\n" + " text-decoration: none;\n" + "}\n" + ".userform\n" + "{\n" + " padding: 4px;\n" + "}\n" + ".loginform\n" + "{\n" + " display: grid;\n" + "}\n" + "form, label, table\n" + "{\n" + " margin: auto;\n" + "}\n" + "div\n" + "{\n" + " align-items: center;\n" + " display: grid;\n" + "}\n" + "input, .abutton\n" + "{\n" + " margin: auto;\n" + " border: 1px solid;\n" + " border-radius: 8px;\n" + "}\n" + "header, footer\n" + "{\n" + " display: flex;\n" + " justify-content: center;\n" + " text-decoration: auto;\n" + "}\n" + "table\n" + "{\n" + " max-width: 50%;\n" + "}\n" + "tr:nth-child(even)\n" + "{\n" + " background-color: lightgray;\n" + "}\n" + ".page\n" + "{\n" + " margin: 0.2rem;\n" + "}\n" + ".pages\n" + "{\n" + " display: flex;\n" + "}\n"; + +const size_t default_style_len = sizeof default_style - 1; diff --git a/default_terms.c b/default_terms.c new file mode 100644 index 0000000..f532cc9 --- /dev/null +++ b/default_terms.c @@ -0,0 +1,13 @@ +#include "default.h" +#include + +const char default_terms[] = + "Please enter your terms of service.\n" + "They can be modified from the TERMS file inside the prefix directory.\n" + "For example, a bullet list:\n" + "- Be nice to others.\n" + "- Do not upload illegal or harmful content.\n" + "A token can be generated by the administrator with tokengen(1).\n" + ; + +const size_t default_terms_len = sizeof default_terms - 1; diff --git a/defs.h b/defs.h new file mode 100644 index 0000000..c63e95e --- /dev/null +++ b/defs.h @@ -0,0 +1,43 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef DEFS_H +#define DEFS_H + +#define MINPWDLEN 8 +#define PAGE_LIMIT 15 +#define PROJECT_NAME "nanobbs" +#define PROJECT_DESC "a tiny forums software" +#define PROJECT_TITLE PROJECT_NAME ", " PROJECT_DESC +#define PROJECT_TAG "" PROJECT_TITLE "" +#define PROJECT_URL "https://gitea.privatedns.org/xavi/" PROJECT_NAME +#define COMMON_HEAD \ + " \n" \ + " \n" \ + PROJECT_TAG "\n" +#define DOCTYPE_TAG "\n" +#define TERMS_PATH "TERMS" +#define PRV_PATH "PRIVACY" +#define STYLE_PATH "style.css" +#define STYLE_A "" +#define USER_SYMS "abcdefghijklmnopqrstuvwxyz" \ + "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" + +#endif diff --git a/endpoints.h b/endpoints.h new file mode 100644 index 0000000..b41ef17 --- /dev/null +++ b/endpoints.h @@ -0,0 +1,21 @@ +#ifndef ENDPOINTS_H +#define ENDPOINTS_H + +#include + +struct cfg +{ + const char *dir; +}; + +int ep_index(const struct http_payload *p, struct http_response *r, void *user); +int ep_view(const struct http_payload *p, struct http_response *r, void *user); +int ep_style(const struct http_payload *p, struct http_response *r, void *user); +int ep_login(const struct http_payload *p, struct http_response *r, void *user); +int ep_logout(const struct http_payload *p, struct http_response *r, void *user); +int ep_signup(const struct http_payload *p, struct http_response *r, void *user); +int ep_passwd(const struct http_payload *p, struct http_response *r, void *user); +int ep_create(const struct http_payload *p, struct http_response *r, void *user); +int ep_ucp(const struct http_payload *p, struct http_response *r, void *user); + +#endif diff --git a/ep_create.c b/ep_create.c new file mode 100644 index 0000000..dfe0d6f --- /dev/null +++ b/ep_create.c @@ -0,0 +1,695 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "auth.h" +#include "db.h" +#include "form.h" +#include "op.h" +#include "utils.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct create +{ + unsigned long uid, category, section, topic; + enum auth_role role; + time_t creat; + char *name, *post; + sqlite3 *db; +}; + +static int teardown(struct create *const c) +{ + int ret = 0, error; + + if (!c) + return 0; + else if ((error = sqlite3_close(c->db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + free(c->name); + free(c->post); + free(c); + return ret; +} + +static void free_create(void *const p) +{ + teardown(p); +} + +static int end_post(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct create *const c = args; + struct dynstr d; + const int error = sqlite3_close(c->db); + + c->db = NULL; + dynstr_init(&d); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + else if (dynstr_append(&d, "/view/%lu/%lu/%jd", c->category, c->section, + c->topic)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", d.str)) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + free_create(c); + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int create_post(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, error; + struct form *f = NULL; + char *spost = NULL; + struct dynstr d; + const char *post; + struct create *const c = args; + const time_t t = time(NULL); + + dynstr_init(&d); + + if (c->role < AUTH_ROLE_USER) + { + ret = form_unauthorized("User rights or higher required", r); + goto end; + } + else if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + + goto end; + } + else if (!(post = form_value(f, "post"))) + { + ret = form_badreq("Missing post", r); + goto end; + } + else if (!(spost = sanitize(post))) + { + fprintf(stderr, "%s: sanitize failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT INTO posts(text, creat, uid, topid) " + "VALUES ('%s', '%jd', %lu, %lu)", spost, (intmax_t)t, c->uid, + c->topic)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_create, + .end = end_post, + .args = c + }; + + if (!op_run(c->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(spost); + form_free(f); + dynstr_free(&d); + return ret; +} + +static int topic(sqlite3_stmt *const stmt, const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct create *const c = args; + unsigned t; + + if (db_uint(c->db, stmt, "topid", &t)) + { + fprintf(stderr, "%s: db_uint failed\n", __func__); + return -1; + } + + c->topic = t; + return 0; +} + +static void rollback(void *const args) +{ + struct create *const c = args; + + if (!c) + return; + + db_rollback(c->db); + free_create(c); +} + +static int commit(const struct http_payload *const p, + struct http_response *r, void *const user, void *const args) +{ + struct create *const c = args; + + const struct op_cfg op = + { + .error = rollback, + .end = end_post, + .args = c + }; + + if (!op_run(c->db, "COMMIT;", &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int post_inserted(const struct http_payload *const p, + struct http_response *r, void *const user, void *const args) +{ + static const char query[] = "SELECT topid FROM posts " + "WHERE id = last_insert_rowid();"; + struct create *const c = args; + + const struct op_cfg op = + { + .error = rollback, + .end = commit, + .row = topic, + .args = c + }; + + if (!op_run(c->db, query, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int topic_inserted(const struct http_payload *const p, + struct http_response *r, void *const user, void *const args) +{ + int ret = -1; + struct create *const c = args; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "INSERT INTO posts(text, creat, uid, topid) " + "VALUES ('%s', %jd, %lu, last_insert_rowid());", c->post, c->creat, + c->uid)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .end = post_inserted, + .error = rollback, + .args = c + }; + + if (!op_run(c->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int begin_tr(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct create *const c = args; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "INSERT INTO topics(title, creat, secid, uid) " + "VALUES ('%s', %jd, %lu, %lu);", c->name, c->creat, c->section, c->uid)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .end = topic_inserted, + .error = rollback, + .args = c + }; + + if (!op_run(c->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int create_topic(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, error; + char *sname = NULL, *spost = NULL; + struct form *f = NULL; + struct create *const c = args; + const char *name, *post; + const time_t t = time(NULL); + + if (c->role < AUTH_ROLE_USER) + { + ret = form_unauthorized("User rights or higher required", r); + goto end; + } + else if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Missing topic name and/or post", r); + + goto end; + } + else if (!(name = form_value(f, "name"))) + { + ret = form_badreq("Missing topic name", r); + goto end; + } + else if (!(post = form_value(f, "post"))) + { + ret = form_badreq("Missing post", r); + goto end; + } + else if (!(sname = sanitize(name)) || !(spost = sanitize(post))) + { + fprintf(stderr, "%s: sanitize failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_create, + .end = begin_tr, + .args = c + }; + + if (!op_run(c->db, "BEGIN TRANSACTION;", &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + c->name = sname; + c->post = spost; + c->creat = t; + ret = 0; + +end: + + if (ret) + { + free(spost); + free(sname); + } + + form_free(f); + return ret; +} + +static int end_section(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct create *const c = args; + struct dynstr d; + const int error = sqlite3_close(c->db); + + c->db = NULL; + dynstr_init(&d); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + else if (dynstr_append(&d, "/view/%lu", c->category)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", d.str)) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + free_create(c); + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int create_section(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, error; + struct dynstr d; + char *sname = NULL, *sdesc = NULL; + struct form *f = NULL; + struct create *const c = args; + const char *name, *description; + + dynstr_init(&d); + + if (c->role < AUTH_ROLE_MOD) + { + ret = form_unauthorized("Moderator rights required", r); + goto end; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error < 0)) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Missing section name and/or title", r); + + goto end; + } + else if (!(name = form_value(f, "name"))) + { + ret = form_badreq("Missing section name", r); + goto end; + } + else if (!(description = form_value(f, "description"))) + { + ret = form_badreq("Missing section description", r); + goto end; + } + else if (!(sname = sanitize(name)) + || !(sdesc = sanitize(description))) + { + fprintf(stderr, "%s: sanitize failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT INTO sections(name, description, catid)" + "VALUES('%s', '%s', %lu);", sname, sdesc, c->category)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_create, + .end = end_section, + .args = c + }; + + if (!op_run(c->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(sdesc); + free(sname); + form_free(f); + dynstr_free(&d); + return ret; +} + +static int end_category(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct create *const c = args; + const int error = sqlite3_close(c->db); + + c->db = NULL; + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", "/")) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free_create(c); + return ret; +} + +static int create_category(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, error; + char *sname = NULL; + struct create *const c = args; + struct form *f = NULL; + struct dynstr d; + const char *name; + + dynstr_init(&d); + + if (c->role < AUTH_ROLE_MOD) + { + ret = form_unauthorized("Moderator rights or higher required", r); + goto end; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Missing category name", r); + + goto end; + } + else if (!(name = form_value(f, "name"))) + { + ret = form_badreq("Expected category name", r); + goto end; + } + else if (!(sname = sanitize(name))) + { + fprintf(stderr, "%s: sanitize failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT INTO categories(name) VALUES" + "('%s');", sname)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_create, + .end = end_category, + .args = c + }; + + if (!op_run(c->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(sname); + dynstr_free(&d); + form_free(f); + return ret; +} + +static int set_path(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = 0; + struct create *const c = args; + const char *tree = p->resource + strlen("/create/"); + + if (!*tree) + r->step.payload = create_category; + else if (getul(&tree, &c->category)) + ret = form_badreq("Invalid category", r); + else if (!*tree) + r->step.payload = create_section; + else if (getul(&tree, &c->section)) + ret = form_badreq("Invalid section", r); + else if (!*tree) + r->step.payload = create_topic; + else if (getul(&tree, &c->topic)) + ret = form_badreq("Invalid topic", r); + else + r->step.payload = create_post; + + return ret; +} + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, + sqlite3 *const db, const struct auth_user *const u) +{ + int ret = -1, error; + struct create *c = NULL; + + if (!u) + { + ret = form_unauthorized("Authentication required", r); + goto failure; + } + else if (u->role <= AUTH_ROLE_BANNED) + { + ret = form_unauthorized("Banned account", r); + goto failure; + } + else if (!(c = malloc(sizeof *c))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + *c = (const struct create) + { + .uid = u->id, + .role = u->role, + .db = db + }; + + *r = (const struct http_response) + { + .step.payload = set_path, + .free = free_create, + .args = c + }; + + return 0; + +failure: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(c); + return ret; +} + +int ep_create(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + int ret = auth_validate(p, r, user, setup); + + if (ret < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (ret) + ret = form_unauthorized("Authentication required", r); + + return ret; +} diff --git a/ep_index.c b/ep_index.c new file mode 100644 index 0000000..d533220 --- /dev/null +++ b/ep_index.c @@ -0,0 +1,432 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "auth.h" +#include "defs.h" +#include "db.h" +#include "form.h" +#include "op.h" +#include +#include +#include +#include +#include +#include +#include + +struct category +{ + sqlite3 *db; + struct op *op; + struct html_node *root, *body, *section_ul, *div; +}; + +static void free_category(struct category *const c) +{ + int error; + + if (!c) + return; + else if ((error = sqlite3_close(c->db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + html_node_free(c->root); + free(c); +} + +static int section(sqlite3_stmt *const stmt, + const struct http_payload *const pl, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + struct db_section dbs = {0}; + struct html_node *div, *ul, *a, *p; + struct dynstr d; + struct category *const c = args; + + dynstr_init(&d); + + if (db_section(c->db, stmt, &dbs)) + { + fprintf(stderr, "%s: db_section failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "/view/%d/%d", dbs.catid, dbs.id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(ul = html_node_add_child(c->div, "ul"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "ul"); + goto end; + } + else if (!(div = html_node_add_child(ul, "div"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "ul"); + goto end; + } + else if (!(a = html_node_add_child(div, "a"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "a"); + goto end; + } + else if (html_node_add_attr(a, "href", d.str)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, dbs.name)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (!(p = html_node_add_child(div, "p"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "p"); + goto end; + } + else if (html_node_set_value(p, dbs.desc)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + db_section_free(&dbs); + dynstr_free(&d); + return ret; +} + +static int end_section(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct category *const c = args; + + op_resume(c->op, r); + return 0; +} + +static void rollback(void *const args) +{ + struct category *const c = args; + + if (!c) + return; + + db_rollback(c->db); + free_category(c); +} + +static int category( sqlite3_stmt *const stmt, + const struct http_payload *const p, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + unsigned long long id; + char *name = NULL; + struct html_node *div, *ul, *a; + struct dynstr d, expr; + struct category *const c = args; + sqlite3 *const db = c->db; + + dynstr_init(&d); + dynstr_init(&expr); + + if (db_biguint(db, stmt, "id", &id)) + { + fprintf(stderr, "%s: failed to get id\n", __func__); + goto end; + } + else if (!(name = db_str(db, stmt, "name"))) + { + fprintf(stderr, "%s: failed to get name\n", __func__); + goto end; + } + else if (dynstr_append(&d, "/view/%d", id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(div = html_node_add_child(c->body, "div"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "div"); + goto end; + } + else if (!(ul = html_node_add_child(div, "ul"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "ul"); + goto end; + } + else if (!(a = html_node_add_child(ul, "a"))) + { + fprintf(stderr, "%s: html_node_add_child %s failed\n", __func__, "a"); + goto end; + } + else if (html_node_add_attr(a, "href", d.str)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, name)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (dynstr_append(&expr, "SELECT * FROM sections WHERE catid = %d " + "ORDER BY id ASC;", id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .end = end_section, + .row = section, + .error = rollback, + .args = c + }; + + if (!op_run(db, expr.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + c->div = div; + ret = 0; + +end: + free(name); + dynstr_free(&expr); + dynstr_free(&d); + return ret; +} + +static int end_category(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct category *const c = args; + struct dynstr d; + const int error = sqlite3_close(c->db); + + c->db = NULL; + dynstr_init(&d); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + goto failure; + } + else if (form_footer(c->body, p->resource)) + { + fprintf(stderr, "%s: form_footer failed\n", __func__); + goto failure; + } + else if (dynstr_append(&d, "%s", DOCTYPE_TAG)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + else if (html_serialize(c->root, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto failure; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .buf.rw = d.str, + .free = free, + .n = d.len + }; + + free_category(c); + return 0; + +failure: + dynstr_free(&d); + return -1; +} + +static int commit(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct category *const c = args; + const struct op_cfg ocfg = + { + .end = end_category, + .error = rollback, + .args = c + }; + + if (!op_run(c->db, "COMMIT;", &ocfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int begin_tr(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + static const char query[] = "SELECT * FROM categories ORDER BY id ASC;"; + struct category *const c = args; + const struct op_cfg ocfg = + { + .row = category, + .end = commit, + .args = c + }; + + if (!(c->op = op_run(c->db, query, &ocfg, r))) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int setup(const struct http_payload *const pl, + struct http_response *const r, void *const user, sqlite3 *const db, + const struct auth_user *const u) +{ + int ret = -1, error; + char *userdup = NULL; + const char *const username = u ? u->username : NULL; + struct html_node *root = NULL, *body, *div, *h2, *ul; + struct category *c = NULL; + + if (u && u->role <= AUTH_ROLE_BANNED) + { + ret = form_unauthorized("Banned account", r); + goto failure; + } + else if (!(root = html_node_alloc("html"))) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto failure; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto failure; + } + else if (!(body = html_node_add_child(root, "body"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto failure; + } + else if (form_login(body, username)) + { + fprintf(stderr, "%s: form_login failed\n", __func__); + goto failure; + } + else if (u && u->role >= AUTH_ROLE_MOD && form_category(body)) + { + fprintf(stderr, "%s: form_category failed\n", __func__); + goto failure; + } + else if (!(div = html_node_add_child(body, "div")) + || !(h2 = html_node_add_child(div, "h2")) + || !(ul = html_node_add_child(body, "ul"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto failure; + } + else if (html_node_set_value(h2, "Categories")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto failure; + } + else if (!(c = malloc(sizeof *c))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + const struct op_cfg ocfg = + { + .error = rollback, + .end = begin_tr, + .args = c + }; + + if (!op_run(db, "BEGIN TRANSACTION", &ocfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto failure; + } + + *c = (const struct category) + { + .section_ul = ul, + .body = body, + .root = root, + .db = db + }; + + return 0; + +failure: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(c); + free(userdup); + html_node_free(root); + return ret; +} + +int ep_index(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + const int n = auth_validate(p, r, user, setup); + + if (n < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (n) + { + const struct cfg *const cfg = user; + sqlite3 *db; + + if (db_open(cfg->dir, &db)) + { + fprintf(stderr, "%s: db_open failed\n", __func__); + return -1; + } + + return setup(p, r, user, db, NULL); + } + + return n; +} diff --git a/ep_login.c b/ep_login.c new file mode 100644 index 0000000..0247ce4 --- /dev/null +++ b/ep_login.c @@ -0,0 +1,306 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "db.h" +#include "defs.h" +#include "form.h" +#include "op.h" +#include "utils.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct login +{ + bool valid; + char *username, *password, *key; + sqlite3 *db; +}; + +static void free_login(void *const p) +{ + int error; + struct login *const l = p; + + if (!l) + return; + else if ((error = sqlite3_close(l->db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(l->username); + free(l->password); + free(l->key); + free(l); +} + +static int row(sqlite3_stmt *const stmt, + const struct http_payload *const p, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + struct login *const l = args; + sqlite3 *const db = l->db; + const size_t len = strlen(l->password); + char *const hashpwd = db_str(db, stmt, "password"), + *key = db_str(db, stmt, "signkey"); + + if (!hashpwd) + { + fprintf(stderr, "%s: missing password\n", __func__); + goto end; + } + else if (!key) + { + fprintf(stderr, "%s: missing signkey\n", __func__); + goto end; + } + else if (!crypto_pwhash_str_verify(hashpwd, l->password, len)) + { + l->valid = true; + l->key = key; + key = NULL; + } + + ret = 0; + +end: + free(key); + free(hashpwd); + return ret; +} + +static int authorize(const struct login *const l, struct http_response *const r) +{ + int ret = -1; + char *const cookie = gencookie(l->username, l->key); + + if (!cookie) + { + fprintf(stderr, "%s: gencookie failed\n", __func__); + goto end; + } + + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", "/") + || http_response_add_header(r, "Set-Cookie", cookie)) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(cookie); + return ret; +} + +static int end(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + struct login *const l = args; + const int error = sqlite3_close(l->db); + + l->db = NULL; + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + return -1; + } + else if (l->valid) + { + if (authorize(l, r)) + { + fprintf(stderr, "%s: authorize failed\n", __func__); + return -1; + } + } + else if (form_unauthorized("Invalid username or password", r)) + { + fprintf(stderr, "%s: form_unauthorized failed\n", __func__); + return -1; + } + + free_login(l); + return 0; +} + +static int query_creds(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct login *const l = args; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, + "SELECT signkey, password FROM users WHERE name = '%s'", l->username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = free_login, + .end = end, + .row = row, + .args = l + }; + + if (!op_run(l->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + + if (ret) + free_login(l); + + dynstr_free(&d); + return ret; +} + +static int open_db(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + const struct cfg *const cfg = user; + struct login *const l = args; + const int error = db_open(cfg->dir, &l->db); + + if (error != SQLITE_OK) + { + if (error != SQLITE_BUSY) + { + fprintf(stderr, "%s: db_open: %s\n", __func__, + sqlite3_errstr(error)); + goto failure; + } + } + else + *r = (const struct http_response) + { + .step.payload = query_creds, + .args = l + }; + + return 0; + +failure: + free(l); + return -1; +} + +static int check_user(const char *const username) +{ + return strspn(username, USER_SYMS) != strlen(username); +} + +int ep_login(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + int error, ret = -1; + char *userdup = NULL, *passdup = NULL; + struct form *f = NULL; + struct login *l = NULL; + const char *username, *password; + + if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Invalid request", r); + + goto end; + } + else if (!(username = form_value(f, "username"))) + { + fprintf(stderr, "%s: missing username\n", __func__); + ret = form_badreq("Missing username", r); + goto end; + } + else if (!(password = form_value(f, "password"))) + { + fprintf(stderr, "%s: missing password\n", __func__); + ret = form_badreq("Missing password", r); + goto end; + } + else if (check_user(username)) + { + fprintf(stderr, "%s: check_user failed\n", __func__); + ret = form_unauthorized("Invalid username", r); + goto end; + } + else if (!(userdup = strdup(username)) + || !(passdup = strdup(password))) + { + fprintf(stderr, "%s: strdup(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(l = malloc(sizeof *l))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto end; + } + + *l = (const struct login) + { + .username = userdup, + .password = passdup, + }; + + *r = (const struct http_response) + { + .step.payload = open_db, + .args = l + }; + + ret = 0; + +end: + + if (ret) + { + free(userdup); + free(passdup); + free(l); + } + + form_free(f); + return 0; +} diff --git a/ep_logout.c b/ep_logout.c new file mode 100644 index 0000000..6f9bc1d --- /dev/null +++ b/ep_logout.c @@ -0,0 +1,85 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "auth.h" +#include "form.h" +#include +#include + +static const char errmsg[] = "Invalid or missing cookie"; + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, sqlite3 *const db, + const struct auth_user *const u) +{ + static const char date[] = "Thu, 1 Jan 1970 00:00:00 GMT"; + int ret = -1, error; + struct dynstr d; + + dynstr_init(&d); + + if (!u) + { + ret = form_unauthorized("Authentication required", r); + goto end; + } + else if (dynstr_append(&d, "%s=expired; Expires=%s", u->username, date)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Set-Cookie", d.str) + || http_response_add_header(r, "Location", "/")) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + ret = 0; + +end: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + dynstr_free(&d); + return ret; +} + +int ep_logout(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + int ret = auth_validate(p, r, user, setup); + + if (ret < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (ret) + ret = form_badreq(errmsg, r); + + return ret; +} diff --git a/ep_passwd.c b/ep_passwd.c new file mode 100644 index 0000000..c3dab9a --- /dev/null +++ b/ep_passwd.c @@ -0,0 +1,400 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "auth.h" +#include "db.h" +#include "defs.h" +#include "form.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct passwd +{ + bool valid; + sqlite3 *db; + sqlite3_stmt *stmt; + char *username, *old, *new; +}; + +static void free_passwd(struct passwd *const p) +{ + int error; + + if (!p) + return; + + sqlite3_finalize(p->stmt); + + if ((error = sqlite3_close(p->db) != SQLITE_OK)) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(p->username); + free(p->old); + free(p->new); + free(p); +} + +static int row(struct passwd *const p) +{ + char *const hashpwd = db_str(p->db, p->stmt, "password"); + + if (!hashpwd) + { + fprintf(stderr, "%s: missing password\n", __func__); + return -1; + } + else if (!crypto_pwhash_str_verify(hashpwd, p->old, strlen(p->old))) + p->valid = true; + + free(hashpwd); + return 0; +} + +static int finalize_update(struct passwd *const p, + struct http_response *const r) +{ + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", "/")) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + return -1; + } + + free_passwd(p); + return 0; +} + +static int update(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + struct passwd *const p = args; + sqlite3_stmt *const stmt = p->stmt; + const int error = sqlite3_step(stmt); + + switch (error) + { + case SQLITE_BUSY: + break; + + case SQLITE_DONE: + if (finalize_update(p, r)) + goto failure; + + break; + + default: + fprintf(stderr, "%s: sqlite3_step: %s\n", __func__, + sqlite3_errstr(error)); + sqlite3_reset(stmt); + goto failure; + } + + return 0; + +failure: + free_passwd(p); + return -1; +} + +static int prepare_change(struct passwd *const p, struct http_response *const r) +{ + int ret = -1, error; + struct dynstr d; + sqlite3_stmt *stmt = NULL; + char hashpwd[crypto_pwhash_STRBYTES]; + + dynstr_init(&d); + + if (crypto_pwhash_str(hashpwd, p->new, strlen(p->new), + crypto_pwhash_OPSLIMIT_INTERACTIVE, crypto_pwhash_MEMLIMIT_INTERACTIVE)) + { + fprintf(stderr, "%s: crypto_pwhash_str failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, + "UPDATE users SET password='%s' WHERE name = '%s';", hashpwd, + p->username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((error = sqlite3_prepare_v2(p->db, d.str, d.len, &stmt, NULL)) + != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_prepare_v2 \"%s\": %s\n", __func__, + d.str, sqlite3_errstr(error)); + goto end; + } + + p->stmt = stmt; + + *r = (const struct http_response) + { + .step.payload = update, + .args = p + }; + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int finalize(struct passwd *const p, struct http_response *const r) +{ + const int error = sqlite3_finalize(p->stmt); + + p->stmt = NULL; + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_finalize: %s\n", __func__, + sqlite3_errstr(error)); + return -1; + } + else if (!p->valid) + { + const int ret = form_unauthorized("Invalid current password", r); + + free_passwd(p); + return ret; + } + else if (prepare_change(p, r)) + { + fprintf(stderr, "%s: prepare_change failed\n", __func__); + return -1; + } + + return 0; +} + +static int run_query(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + struct passwd *const p = args; + sqlite3_stmt *const stmt = p->stmt; + const int error = sqlite3_step(stmt); + + switch (error) + { + case SQLITE_BUSY: + break; + + case SQLITE_DONE: + if (finalize(p, r)) + goto failure; + + break; + + case SQLITE_ROW: + if (row(p)) + goto failure; + + break; + + default: + fprintf(stderr, "%s: sqlite3_step: %s\n", __func__, + sqlite3_errstr(error)); + sqlite3_reset(stmt); + goto failure; + } + + return 0; + +failure: + free_passwd(p); + return -1; +} + +static int passwd(const struct cfg *const cfg, const char *const username, + const char *const old, const char *const new, sqlite3 *const db, + struct http_response *const r) +{ + int ret = -1, error; + struct dynstr d; + sqlite3_stmt *stmt = NULL; + char *userdup = NULL, *olddup = NULL, *newdup = NULL; + struct passwd *p = NULL; + + dynstr_init(&d); + + if (!(userdup = strdup(username)) + || !(olddup = strdup(old)) + || !(newdup = strdup(new))) + { + fprintf(stderr, "%s: strdup(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (dynstr_append(&d, + "SELECT password from users WHERE name = '%s'", username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((error = sqlite3_prepare_v2(db, d.str, d.len, &stmt, + NULL)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_prepare_v2 \"%s\": %s\n", __func__, + d.str, sqlite3_errstr(error)); + goto end; + } + else if (!(p = malloc(sizeof *p))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto end; + } + + *p = (const struct passwd) + { + .username = userdup, + .old = olddup, + .new = newdup, + .stmt = stmt, + .db = db + }; + + *r = (const struct http_response) + { + .step.payload = run_query, + .args = p + }; + + ret = 0; + +end: + + if (ret) + { + free(p); + free(userdup); + free(olddup); + free(newdup); + sqlite3_finalize(stmt); + } + + dynstr_free(&d); + return ret; +} + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, sqlite3 *const db, + const struct auth_user *const u) +{ + int ret = -1, error; + struct form *f = NULL; + const char *old, *new, *cnew; + const struct cfg *const cfg = user; + + *r = (const struct http_response){0}; + + if (!u) + { + ret = form_unauthorized("Authentication required", r); + goto failure; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Invalid request", r); + + goto failure; + } + else if (!(old = form_value(f, "old"))) + { + ret = form_badreq("Missing old password", r); + goto failure; + } + else if (!(new = form_value(f, "new"))) + { + ret = form_badreq("Missing new password", r); + goto failure; + } + else if (!(cnew = form_value(f, "cnew"))) + { + ret = form_badreq("Missing confirmation password", r); + goto failure; + } + else if (strcmp(new, cnew)) + { + ret = form_badreq("New password mismatch", r); + goto failure; + } + else if (strlen(new) < MINPWDLEN) + { + ret = form_shortpwd(r); + goto failure; + } + else if ((ret = passwd(cfg, u->username, old, new, db, r))) + { + fprintf(stderr, "%s: passwd failed\n", __func__); + goto failure; + } + + form_free(f); + return 0; + +failure: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + form_free(f); + return ret; +} + +int ep_passwd(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + const int n = auth_validate(p, r, user, setup); + + if (n < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (n) + { + const struct cfg *const cfg = user; + sqlite3 *db; + + if (db_open(cfg->dir, &db)) + { + fprintf(stderr, "%s: db_open failed\n", __func__); + return -1; + } + + return setup(p, r, user, db, NULL); + } + + return n; +} diff --git a/ep_signup.c b/ep_signup.c new file mode 100644 index 0000000..fddf96e --- /dev/null +++ b/ep_signup.c @@ -0,0 +1,651 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "db.h" +#include "defs.h" +#include "form.h" +#include "jwt.h" +#include "op.h" +#include "utils.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct signup +{ + bool exists; + char *cookie; + sqlite3 *db; + unsigned char key[32]; +}; + +static void free_signup(void *const p) +{ + int error; + struct signup *const s = p; + + if (!s) + return; + else if ((error = sqlite3_close(s->db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(s->cookie); + free(s); +} + +static char *dump_terms(const char *const dir) +{ + char *ret = NULL, *s = NULL, *encs = NULL; + int fd = -1; + struct dynstr d; + struct stat sb; + + dynstr_init(&d); + + if (dynstr_append(&d, "%s/%s", dir, TERMS_PATH)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((fd = open(d.str, O_RDONLY)) < 0) + { + fprintf(stderr, "%s: open(2) %s: %s\n", __func__, d.str, + strerror(errno)); + goto end; + } + else if (fstat(fd, &sb)) + { + fprintf(stderr, "%s: fstat(2) %s: %s\n", __func__, d.str, + strerror(errno)); + goto end; + } + else if (!(s = malloc(sb.st_size + 1))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto end; + } + + off_t rem = sb.st_size; + char *p = s; + + while (rem) + { + const ssize_t r = read(fd, p, rem); + + if (r < 0) + { + fprintf(stderr, "%s: read(2): %s\n", __func__, strerror(errno)); + goto end; + } + + rem -= r; + p += r; + } + + s[sb.st_size] = '\0'; + + if (!(encs = html_encode(s))) + { + fprintf(stderr, "%s: html_encode failed\n", __func__); + goto end; + } + + ret = encs; + +end: + + if (fd >= 0 && close(fd)) + { + fprintf(stderr, "%s: close(2) %s: %s\n", __func__, d.str, + strerror(errno)); + ret = NULL; + } + + if (!ret) + free(encs); + + free(s); + dynstr_free(&d); + return ret; +} + +static int get(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + int ret = -1; + char *terms = NULL; + const struct cfg *const cfg = user; + struct dynstr d; + struct html_node *root = NULL, *body, *form, *luser, *iuser, *lpass, + *ipass, *ltoken, *itoken, *submit, *pterms; + + dynstr_init(&d); + + if (!(terms = dump_terms(cfg->dir))) + { + fprintf(stderr, "%s: dump_terms failed\n", __func__); + goto end; + } + else if (!(root = html_node_alloc("html"))) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto end; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto end; + } + else if (!(body = html_node_add_child(root, "body")) + || !(form = html_node_add_child(body, "form")) + || !(luser = html_node_add_child(form, "label")) + || !(iuser = html_node_add_child(form, "input")) + || !(lpass = html_node_add_child(form, "label")) + || !(ipass = html_node_add_child(form, "input")) + || !(ltoken = html_node_add_child(form, "label")) + || !(itoken = html_node_add_child(form, "input")) + || !(submit = html_node_add_child(form, "input")) + || !(pterms = html_node_add_child(body, "p"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", "/signup") + || html_node_add_attr(form, "form", "loginform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(luser, "for", "username") + || html_node_add_attr(lpass, "for", "password") + || html_node_add_attr(ltoken, "for", "token") + || html_node_add_attr(iuser, "type", "text") + || html_node_add_attr(iuser, "id", "username") + || html_node_add_attr(iuser, "name", "username") + || html_node_add_attr(ipass, "type", "password") + || html_node_add_attr(ipass, "id", "password") + || html_node_add_attr(ipass, "name", "password") + || html_node_add_attr(itoken, "type", "text") + || html_node_add_attr(itoken, "id", "token") + || html_node_add_attr(itoken, "name", "token") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Sign up")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(luser, "Username:") + || html_node_set_value(lpass, "Password:") + || html_node_set_value(ltoken, "Token:") + || html_node_set_value_unescaped(pterms, terms)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (form_footer(body, p->resource)) + { + fprintf(stderr, "%s: form_footer failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "%s", DOCTYPE_TAG)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_serialize(root, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto end; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .buf.rw = d.str, + .n = d.len, + .free = free + }; + + ret = 0; + +end: + if (ret) + dynstr_free(&d); + + free(terms); + html_node_free(root); + return ret; +} + +static int check_user(const char *const username) +{ + return strspn(username, USER_SYMS) != strlen(username); +} + +static int check_token(const char *const token, const struct signup *const s, + const char *const expuser) +{ + int ret = -1; + cJSON *j = NULL; + const cJSON *u, *e; + const char *user; + + if ((ret = jwt_decode(token, s->key, sizeof s->key, &j))) + { + if (ret < 0) + fprintf(stderr, "%s: jwt_decode failed\n", __func__); + + goto end; + } + else if (!(u = cJSON_GetObjectItem(j, "name")) + || !(e = cJSON_GetObjectItem(j, "exp")) + || !(user = cJSON_GetStringValue(u)) + || !cJSON_IsNumber(e) + || strcmp(user, expuser)) + { + ret = 1; + goto end; + } + + const time_t t = time(NULL); + + if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + ret = -1; + goto end; + } + else if (t >= (intmax_t)cJSON_GetNumberValue(e)) + { + ret = 1; + goto end; + } + + ret = 0; + +end: + cJSON_Delete(j); + return ret; +} + +static int report_usersyms(struct http_response *const r) +{ + int ret = -1; + char *enc = NULL; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "Invalid username. Accepted symbols: %s", + USER_SYMS)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(enc = html_encode(d.str))) + { + fprintf(stderr, "%s: html_encode failed\n", __func__); + goto end; + } + + ret = form_badreq(d.str, r); + +end: + free(enc); + dynstr_free(&d); + return ret; +} + +static int end_signup(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct signup *const s = args; + const int error = sqlite3_close(s->db); + + s->db = NULL; + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + return -1; + } + else if (s->exists) + { + if (form_badreq("Username already exists", r)) + { + fprintf(stderr, "%s: form_badreq failed\n", __func__); + return -1; + } + } + else + { + *r = (const struct http_response){.status = HTTP_STATUS_SEE_OTHER}; + + if (http_response_add_header(r, "Location", "/") + || http_response_add_header(r, "Set-Cookie", s->cookie)) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + return -1; + } + } + + free_signup(s); + return 0; +} + +static int constraint(void *const args) +{ + struct signup *const s = args; + + s->exists = true; + return 0; +} + +static int end_tr(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct signup *const s = args; + const struct op_cfg op = + { + .error = free_signup, + .end = end_signup, + .args = s + }; + + if (!op_run(s->db, "END TRANSACTION;", &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto failure; + } + + return 0; + +failure: + free_signup(s); + return -1; +} + +static int end_tokenkey(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, success = 0, error; + struct form *f = NULL; + char *cookie = NULL; + struct dynstr d; + unsigned char key[crypto_auth_hmacsha256_KEYBYTES]; + char hashpwd[crypto_pwhash_STRBYTES], enckey[sizeof key * 2 + 1]; + const char *username, *password, *token; + struct signup *const s = args; + const time_t t = time(NULL); + + dynstr_init(&d); + crypto_auth_hmacsha256_keygen(key); + + if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + else if ((error = form_alloc(p->u.post.data, &f))) + { + if ((ret = error) < 0) + fprintf(stderr, "%s: form_alloc failed\n", __func__); + else + ret = form_badreq("Invalid request", r); + + goto end; + } + else if (!(username = form_value(f, "username"))) + { + fprintf(stderr, "%s: missing username\n", __func__); + ret = form_badreq("Missing username", r); + goto end; + } + else if (!(password = form_value(f, "password"))) + { + fprintf(stderr, "%s: missing password\n", __func__); + ret = form_badreq("Missing password", r); + goto end; + } + else if (!(token = form_value(f, "token"))) + { + fprintf(stderr, "%s: missing token\n", __func__); + ret = form_badreq("Missing token", r); + goto end; + } + else if (check_user(username)) + { + if ((ret = report_usersyms(r))) + fprintf(stderr, "%s: report_usersyms failed\n", __func__); + + goto end; + } + else if (strlen(password) < MINPWDLEN) + { + if ((ret = form_shortpwd(r))) + fprintf(stderr, "%s: form_shortpwd failed\n", __func__); + + goto end; + } + else if ((ret = check_token(token, s, username))) + { + if (ret < 0) + fprintf(stderr, "%s: check_token failed\n", __func__); + else if ((ret = form_badreq("Invalid registration token", r))) + fprintf(stderr, "%s: form_badreq failed\n", __func__); + + goto end; + } + else if (!sodium_bin2hex(enckey, sizeof enckey, key, sizeof key)) + { + fprintf(stderr, "%s: sodium_bin2hex failed\n", __func__); + goto end; + } + else if (!(cookie = gencookie(username, enckey))) + { + fprintf(stderr, "%s: gencookie failed\n", __func__); + goto end; + } + else if (crypto_pwhash_str(hashpwd, password, strlen(password), + crypto_pwhash_OPSLIMIT_INTERACTIVE, crypto_pwhash_MEMLIMIT_INTERACTIVE)) + { + fprintf(stderr, "%s: crypto_pwhash_str failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT INTO " + "users(name, password, signkey, creat, thumbnail, roleid) VALUES" + "('%s', '%s', '%s', %jd, NULL, " + "(SELECT id FROM roles WHERE name = 'user'));", + username, hashpwd, enckey, (intmax_t)t)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .constraint = constraint, + .error = free_signup, + .end = end_tr, + .args = s + }; + + if (!op_run(s->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + s->cookie = cookie; + ret = 0; + success = 1; + +end: + + if (!success) + free_signup(s); + + if (ret) + free(cookie); + + dynstr_free(&d); + form_free(f); + return ret; +} + +static int tokenkey(sqlite3_stmt *const stmt, + const struct http_payload *const p, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + struct signup *const s = args; + char *const key = db_str(s->db, stmt, "value"); + + if (!key) + { + fprintf(stderr, "%s: missing tokenkey\n", __func__); + goto end; + } + else if (strlen(key) != sizeof s->key * 2) + { + fprintf(stderr, "%s: unexpected key length: %zu\n", __func__, + strlen(key)); + goto end; + } + else if (sodium_hex2bin(s->key, sizeof s->key, key, strlen(key), NULL, + NULL, NULL)) + { + fprintf(stderr, "%s: sodium_hex2bin failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(key); + return ret; +} + +static int signup_tr(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + static const char query[] = "SELECT value FROM globals " + "WHERE key = 'tokenkey'"; + struct signup *const s = args; + const struct op_cfg op = + { + .error = free_signup, + .end = end_tokenkey, + .row = tokenkey, + .args = s + }; + + if (!op_run(s->db, query, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int post(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + int error; + const struct cfg *const cfg = user; + struct signup *s = NULL; + sqlite3 *db = NULL; + + if ((error = db_open(cfg->dir, &db)) != SQLITE_OK) + { + if (error != SQLITE_BUSY) + { + fprintf(stderr, "%s: db_open: %s\n", __func__, + sqlite3_errstr(error)); + goto failure; + } + } + else if (!(s = malloc(sizeof *s))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + else + { + *s = (const struct signup){.db = db}; + + const struct op_cfg op = + { + .error = free_signup, + .end = signup_tr, + .args = s + }; + + if (!op_run(db, "BEGIN TRANSACTION;", &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto failure; + } + } + + return 0; + +failure: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(s); + return -1; +} + +int ep_signup(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + switch (p->op) + { + case HTTP_OP_GET: + return get(p, r, user); + + case HTTP_OP_POST: + return post(p, r, user); + + default: + fprintf(stderr, "%s: unreachable\n", __func__); + break; + } + + return -1; +} diff --git a/ep_style.c b/ep_style.c new file mode 100644 index 0000000..c2a4efa --- /dev/null +++ b/ep_style.c @@ -0,0 +1,89 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "defs.h" +#include +#include +#include +#include +#include +#include +#include + +int ep_style(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + int ret = -1; + FILE *f = NULL; + const struct cfg *const cfg = user; + const char *const dir = cfg->dir; + struct dynstr d; + struct stat sb; + + dynstr_init(&d); + + if (!dir) + { + fprintf(stderr, "%s: auth_dir failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "%s/" STYLE_PATH, dir)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (stat(d.str, &sb)) + { + fprintf(stderr, "%s: stat(2) %s: %s\n", __func__, d.str, + strerror(errno)); + goto end; + } + else if (!(f = fopen(d.str, "rb"))) + { + fprintf(stderr, "%s: fopen(3) %s: %s\n", + __func__, dir, strerror(errno)); + goto end; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .f = f, + .n = sb.st_size + }; + + if (http_response_add_header(r, "Content-Type", "text/css")) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + goto end; + } + + ret = 0; + +end: + + if (ret && f && fclose(f)) + fprintf(stderr, "%s: fclose(3) %s: %s\n", + __func__, dir, strerror(errno)); + + dynstr_free(&d); + return ret; +} diff --git a/ep_ucp.c b/ep_ucp.c new file mode 100644 index 0000000..30fb9de --- /dev/null +++ b/ep_ucp.c @@ -0,0 +1,241 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#include "endpoints.h" +#include "db.h" +#include "defs.h" +#include "auth.h" +#include "form.h" +#include +#include +#include +#include +#include + +static int setup_passwd(struct html_node *const n, const char *const username) +{ + int ret = -1; + struct dynstr ud; + struct html_node *div, *user, *form, *lold, *iold, *lnew, + *inew, *lcnew, *icnew, *submit; + + dynstr_init(&ud); + + if (dynstr_append(&ud, "User: %s", username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(user = html_node_add_child(form, "label")) + || !(lold = html_node_add_child(form, "label")) + || !(iold = html_node_add_child(form, "input")) + || !(lnew = html_node_add_child(form, "label")) + || !(inew = html_node_add_child(form, "input")) + || !(lcnew = html_node_add_child(form, "label")) + || !(icnew = html_node_add_child(form, "input")) + || !(submit = html_node_add_child(form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", "/passwd") + || html_node_add_attr(form, "form", "passwdform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(lold, "for", "old") + || html_node_add_attr(lnew, "for", "new") + || html_node_add_attr(lcnew, "for", "cnew") + || html_node_add_attr(iold, "type", "password") + || html_node_add_attr(iold, "id", "old") + || html_node_add_attr(iold, "name", "old") + || html_node_add_attr(inew, "type", "password") + || html_node_add_attr(inew, "id", "new") + || html_node_add_attr(inew, "name", "new") + || html_node_add_attr(icnew, "type", "password") + || html_node_add_attr(icnew, "id", "cnew") + || html_node_add_attr(icnew, "name", "cnew") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Change password")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(user, ud.str) + || html_node_set_value(lold, "Current password:") + || html_node_set_value(lnew, "New password:") + || html_node_set_value(lcnew, "Confirm new password:")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&ud); + return ret; +} + +static int setup_useract(struct html_node *const div) +{ + struct f + { + const char *text, *id, *url; + struct html_node *luser, *iuser, *form, *submit; + } fs[] = + { + {.text = "Ban user", .id = "banform", .url = "/confirm/ban"}, + {.text = "Delete user", .id = "delform", .url = "/confirm/deluser"} + }; + + for (size_t i = 0; i < sizeof fs / sizeof *fs; i++) + { + struct f *const f = &fs[i]; + + if (!(f->form = html_node_add_child(div, "form")) + || !(f->luser = html_node_add_child(f->form, "label")) + || !(f->iuser = html_node_add_child(f->form, "input")) + || !(f->submit = html_node_add_child(f->form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (html_node_add_attr(f->form, "action", f->url) + || html_node_add_attr(f->form, "form", f->id) + || html_node_add_attr(f->form, "method", "post") + || html_node_add_attr(f->luser, "for", "user") + || html_node_add_attr(f->iuser, "type", "text") + || html_node_add_attr(f->iuser, "id", "user") + || html_node_add_attr(f->iuser, "name", "user") + || html_node_add_attr(f->submit, "type", "submit") + || html_node_add_attr(f->submit, "value", f->text)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + return -1; + } + else if (html_node_set_value(f->luser, "Username:")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + return -1; + } + } + + return 0; +} + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, sqlite3 *const db, + const struct auth_user *const u) +{ + int ret = -1, error; + struct html_node *root = NULL, *body, *div; + struct dynstr d; + + dynstr_init(&d); + + if (!u) + { + ret = form_unauthorized("Login required", r); + goto end; + } + else if (u->role <= AUTH_ROLE_BANNED) + { + ret = form_unauthorized("Banned account", r); + goto end; + } + else if (!(root = html_node_alloc("html"))) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto end; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto end; + } + else if (!(body = html_node_add_child(root, "body")) + || !(div = html_node_add_child(body, "div"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (setup_passwd(div, u->username)) + { + fprintf(stderr, "%s: setup_passwd failed\n", __func__); + goto end; + } + else if (u->role >= AUTH_ROLE_MOD && setup_useract(div)) + { + fprintf(stderr, "%s: setup_useract failed\n", __func__); + goto end; + } + else if (form_footer(body, p->resource)) + { + fprintf(stderr, "%s: form_footer failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "%s", DOCTYPE_TAG)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_serialize(root, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto end; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .buf.rw = d.str, + .n = d.len, + .free = free + }; + + ret = 0; + +end: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + if (ret) + dynstr_free(&d); + + html_node_free(root); + return ret; +} + +int ep_ucp(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + const int n = auth_validate(p, r, user, setup); + + if (n < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (n) + return setup(p, r, user, NULL, NULL); + + return n; +} diff --git a/ep_view.c b/ep_view.c new file mode 100644 index 0000000..2bc9e47 --- /dev/null +++ b/ep_view.c @@ -0,0 +1,1180 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "auth.h" +#include "db.h" +#include "defs.h" +#include "form.h" +#include "op.h" +#include "utils.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct view +{ + unsigned long category, section, topic, msg, page; + unsigned n_topics; + char *username, *cntq; + struct op *op; + sqlite3 *db; + enum auth_role role; + struct html_node *root, *body, *section_ul, *topic_ul, *topic_div; + int (*end)(const struct http_payload *, struct http_response *, + void *, void *); + + union + { + struct category + { + unsigned *secids; + size_t n_secids; + } category; + + struct post + { + struct db_user user; + } post; + } u; +}; + +static const char timefmt[] = "%B %e %Y %H:%M:%S %Z"; + +static void free_view(struct view *const v) +{ + int error; + + if (!v) + return; + else if ((error = sqlite3_close(v->db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + html_node_free(v->root); + free(v->username); + free(v->cntq); + free(v); +} + +static int append_section(struct category *const c, const unsigned id) +{ + const size_t n = c->n_secids + 1; + unsigned *const secids = realloc(c->secids, n * sizeof *c->secids); + + if (!secids) + { + fprintf(stderr, "%s: realloc(3): %s\n", __func__, strerror(errno)); + return -1; + } + + secids[c->n_secids] = id; + c->secids = secids; + c->n_secids = n; + return 0; +} + +static int reply(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct view *const v = args; + struct dynstr d; + const int error = sqlite3_close(v->db); + + v->db = NULL; + dynstr_init(&d); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + else if (dynstr_append(&d, "%s", DOCTYPE_TAG)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_serialize(v->root, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto end; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .buf.rw = d.str, + .n = d.len, + .free = free + }; + + ret = 0; + +end: + + if (ret) + dynstr_free(&d); + + free(v->u.category.secids); + free_view(v); + return ret; +} + +static int post(sqlite3_stmt *const stmt, const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1, n; + char *name = NULL, *datetime = NULL, *enctext = NULL; + char id[sizeof "4294967295"]; + struct view *const v = args; + sqlite3 *const db = v->db; + struct db_post p = {0}; + struct dynstr d; + struct tm tm; + struct html_node *a, *div, *udiv, *tdiv, *pname; + + dynstr_init(&d); + + /* TODO: push user info */ + if (!(div = html_node_add_child(v->body, "div")) + || !(udiv = html_node_add_child(div, "div")) + || !(tdiv = html_node_add_child(div, "div")) + || !(pname = html_node_add_child(tdiv, "p")) + || !(a = html_node_add_child(tdiv, "a"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (db_post(db, stmt, &p)) + { + fprintf(stderr, "%s: db_post failed\n", __func__); + goto end; + } + else if (!(name = db_str(db, stmt, "name"))) + { + fprintf(stderr, "%s: db_str failed\n", __func__); + goto end; + } + else if ((n = snprintf(id, sizeof id, "%lu", p.id)) < 0 + || n >= sizeof id) + { + fprintf(stderr, "%s: snprintf(3) returned %d\n", __func__, n); + goto end; + } + else if (dynstr_append(&d, "/view/%lu/%lu/%lu#%lu", v->category, + v->section, v->topic, p.id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!localtime_r(&p.creat, &tm)) + { + fprintf(stderr, "%s: localtime_r(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(datetime = astrftime(timefmt, &tm))) + { + fprintf(stderr, "%s: astrftime failed\n", __func__); + goto end; + } + else if (!(enctext = html_encode(p.text))) + { + fprintf(stderr, "%s: html_encode failed\n", __func__); + goto end; + } + else if (html_node_add_attr(a, "href", d.str) + || html_node_add_attr(div, "id", id)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, datetime) + || html_node_set_value(pname, name)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (html_node_set_value_unescaped(tdiv, enctext)) + { + fprintf(stderr, "%s: html_node_set_value_unescaped failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(name); + free(enctext); + free(datetime); + db_post_free(&p); + dynstr_free(&d); + return ret; +} + +static int end_posts(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + + if (form_footer(v->body, p->resource)) + { + fprintf(stderr, "%s: form_footer failed\n", __func__); + return -1; + } + + *r = (const struct http_response) + { + .step.payload = reply, + .args = v + }; + + return 0; +} + +static void view_error(void *args) +{ + free_view(args); +} + +static int view_topic(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct view *const v = args; + struct dynstr d; + struct html_node *const root = html_node_alloc("html"), *body; + + dynstr_init(&d); + + if (!root) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto end; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto end; + } + else if (!(body = html_node_add_child(root, "body"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (form_login(body, v->username)) + { + fprintf(stderr, "%s: form_login failed\n", __func__); + goto end; + } + else if (v->username + && v->role >= AUTH_ROLE_USER + && form_post(body, v->category, v->section, v->topic)) + { + fprintf(stderr, "%s: form_post failed\n", __func__); + goto end; + } + /* TODO: paging */ + else if (dynstr_append(&d, "SELECT posts.*, name FROM posts " + "JOIN users ON users.id = posts.uid " + "AND posts.topid = %lu " + "ORDER BY creat ASC;", v->topic)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .error = view_error, + .end = end_posts, + .row = post, + .args = v + }; + + if (!op_run(v->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + v->root = root; + v->body = body; + ret = 0; + +end: + dynstr_free(&d); + + if (ret) + { + html_node_free(root); + free_view(v); + } + + return ret; +} + +static int end_topics(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + + if (form_footer(v->body, p->resource)) + { + fprintf(stderr, "%s: form_footer failed\n", __func__); + return -1; + } + + *r = (const struct http_response) + { + .step.payload = reply, + .args = v + }; + + return 0; +} + +static void rollback(void *const args) +{ + struct view *const v = args; + + if (!v) + return; + + db_rollback(v->db); + free_view(v); +} + +static int commit(const struct http_payload *const p, + struct http_response *const r, struct view *const v) +{ + const struct op_cfg cfg = + { + .error = rollback, + .end = v->end, + .args = v, + }; + + if (!op_run(v->db, "COMMIT;", &cfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static int end_lastmsg(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + const struct view *const v = args; + + op_resume(v->op, r); + return 0; +} + +static int lastmsg(sqlite3_stmt *const stmt, + const struct http_payload *const p, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + char *stime = NULL; + unsigned id; + long long creat; + struct tm tm; + struct dynstr d, url; + struct html_node *span, *a; + struct view *const v = args; + sqlite3 *const db = v->db; + char *const name = db_str(db, stmt, "name"); + + dynstr_init(&d); + dynstr_init(&url); + + if (!name) + { + fprintf(stderr, "%s: db_str failed\n", __func__); + goto end; + } + else if (db_uint(db, stmt, "id", &id)) + { + fprintf(stderr, "%s: db_uint failed\n", __func__); + goto end; + } + else if (db_bigint(db, stmt, "creat", &creat)) + { + fprintf(stderr, "%s: db_bigint failed\n", __func__); + goto end; + } + else if (!localtime_r(&(time_t){creat}, &tm)) + { + fprintf(stderr, "%s: localtime_r(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(span = html_node_add_child(v->topic_div, "span")) + || !(a = html_node_add_child(span, "a"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (!(stime = astrftime(timefmt, &tm))) + { + fprintf(stderr, "%s: astrftime failed\n", __func__); + goto end; + } + else if (dynstr_append(&url, "/view/%u/%u/%u#%u", v->category, v->section, + v->topic, id) + || dynstr_append(&d, "Last reply by: %s at %s", name, stime)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_node_add_attr(a, "href", url.str)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, d.str)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + free(name); + free(stime); + dynstr_free(&d); + dynstr_free(&url); + return ret; +} + +static char *gentimestr(const time_t *const creat) +{ + char *ret = NULL, *hrtime = NULL, *datetime = NULL; + struct tm tm; + struct dynstr d; + struct html_node *const time = html_node_alloc("time"); + + dynstr_init(&d); + + if (!time) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto end; + } + else if (!(localtime_r(creat, &tm))) + { + fprintf(stderr, "%s: localtime_r(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(hrtime = astrftime(timefmt, &tm)) + || !(datetime = astrftime("%Y-%m-%d %H:%M:%S%z", &tm))) + { + fprintf(stderr, "%s: astrftime failed\n", __func__); + goto end; + } + else if (html_node_add_attr(time, "datetime", datetime)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(time, hrtime)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_serialize(time, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto end; + } + + ret = d.str; + +end: + if (!ret) + dynstr_free(&d); + + html_node_free(time); + free(hrtime); + free(datetime); + return ret; +} + +static int topic(sqlite3_stmt *const stmt, const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + char *name = NULL, *time = NULL; + struct db_topic t = {0}; + struct dynstr url, created, expr; + struct view *const v = args; + sqlite3 *const db = v->db; + struct html_node *li, *dl, *dt, *a, *span; + + dynstr_init(&url); + dynstr_init(&created); + dynstr_init(&expr); + + if (!(li = html_node_add_child(v->topic_ul, "li")) + || !(dl = html_node_add_child(li, "dl")) + || !(dt = html_node_add_child(dl, "dt")) + || !(v->topic_div = html_node_add_child(dt, "div")) + || !(a = html_node_add_child(v->topic_div, "a")) + || !(span = html_node_add_child(v->topic_div, "span"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (db_topic(db, stmt, &t)) + { + fprintf(stderr, "%s: db_topic failed\n", __func__); + goto end; + } + else if (!(name = db_str(db, stmt, "name"))) + { + fprintf(stderr, "%s: db_str failed\n", __func__); + goto end; + } + else if (!(time = gentimestr(&t.creat))) + { + fprintf(stderr, "%s: gentimestr failed\n", __func__); + goto end; + } + else if (dynstr_append(&url, "/view/%u/%u/%u", v->category, t.secid, t.id) + || dynstr_append(&created, "Created by %s at %s", name, time)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_node_add_attr(a, "href", url.str)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, t.title)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (html_node_set_value_unescaped(span, created.str)) + { + fprintf(stderr, "%s: html_node_set_value_unescaped failed\n", __func__); + goto end; + } + else if (dynstr_append(&expr, "SELECT posts.id, posts.creat, " + "name FROM posts JOIN users ON posts.topid = %u " + "AND posts.uid = users.id " + "ORDER BY posts.creat DESC LIMIT 1;", t.id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg cfg = + { + .end = end_lastmsg, + .row = lastmsg, + .args = v + }; + + if (!op_run(db, expr.str, &cfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + v->section = t.secid; + v->topic = t.id; + ret = 0; + +end: + free(name); + free(time); + dynstr_free(&expr); + dynstr_free(&created); + dynstr_free(&url); + db_topic_free(&t); + return ret; +} + +static int print_pages(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + + fprintf(stderr, "%s: TODO\n", __func__); + v->end = end_topics; + return commit(p, r, v); +} + +static int topic_count(sqlite3_stmt *const stmt, + const struct http_payload *const p, struct http_response *const r, + void *const user, void *const args) +{ + struct view *const v = args; + unsigned n; + + if (db_uint(v->db, stmt, "COUNT(*)", &n)) + { + fprintf(stderr, "%s: db_uint failed\n", __func__); + return -1; + } + + v->n_topics = n; + return 0; +} + +static int count_pages(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + const struct op_cfg cfg = + { + .end = print_pages, + .row = topic_count, + .error = rollback, + .args = v + }; + + if (!op_run(v->db, v->cntq, &cfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + return -1; + } + + return 0; +} + +static char *query_topics(const struct view *const v, + const unsigned *const secids, const size_t n_secids) +{ + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "SELECT topics.*, name FROM topics " + "JOIN users ON (")) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + for (size_t i = 0; i < n_secids; i++) + if (dynstr_append(&d, " topics.secid = %u ", secids[i]) + || (i < n_secids - 1 && dynstr_append(&d, "OR"))) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + if (dynstr_append(&d, ") AND topics.uid = users.id " + "ORDER BY creat DESC LIMIT %d OFFSET %ju", + PAGE_LIMIT, (uintmax_t)PAGE_LIMIT * v->page)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + return d.str; + +failure: + dynstr_free(&d); + return NULL; +} + +static char *query_topcnt(const struct view *const v, + const unsigned *const secids, const size_t n_secids) +{ + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "SELECT COUNT(*) FROM topics WHERE")) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + for (size_t i = 0; i < n_secids; i++) + if (dynstr_append(&d, " topics.secid = %u ", secids[i]) + || (i < n_secids - 1 && dynstr_append(&d, "OR"))) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + if (dynstr_append(&d, ";")) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + return d.str; + +failure: + dynstr_free(&d); + return NULL; +} + +static int prepare_topics(struct view *const v, + struct http_response *const r, const unsigned *const secids, + const size_t n_secids) +{ + int ret = 1; + char *topq = NULL, *cntq = NULL; + struct html_node *div, *tdiv, *h2; + + if (!(div = html_node_add_child(v->body, "div")) + || !(tdiv = html_node_add_child(v->body, "div")) + || !(h2 = html_node_add_child(div, "h2")) + || !(v->topic_ul = html_node_add_child(tdiv, "ul"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_set_value(h2, "Topics")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (!(topq = query_topics(v, secids, n_secids))) + { + fprintf(stderr, "%s: query_topics failed\n", __func__); + goto end; + } + else if (!(cntq = query_topcnt(v, secids, n_secids))) + { + fprintf(stderr, "%s: query_topcnt failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .end = count_pages, + .error = rollback, + .row = topic, + .args = v + }; + + if (!(v->op = op_run(v->db, topq, &op, r))) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + v->cntq = cntq; + ret = 0; + +end: + + if (ret) + free(cntq); + + free(topq); + return ret; +} + +static int section_tr(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + const unsigned secids[] = {v->section}; + + if (prepare_topics(v, r, secids, 1)) + { + fprintf(stderr, "%s: prepare_topics failed\n", __func__); + return -1; + } + + return 0; +} + +static int view_section(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + struct html_node *const root = html_node_alloc("html"), *body; + + if (!root) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto failure; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto failure; + } + else if (!(body = html_node_add_child(root, "body"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto failure; + } + else if (form_login(body, v->username)) + { + fprintf(stderr, "%s: form_login failed\n", __func__); + goto failure; + } + else if (v->username && form_topic(body, v->category, v->section)) + { + fprintf(stderr, "%s: form_topic failed\n", __func__); + goto failure; + } + + const struct op_cfg ocfg = + { + .end = section_tr, + .error = rollback, + .args = v + }; + + if (!op_run(v->db, "BEGIN TRANSACTION;", &ocfg, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto failure; + } + + v->root = root; + v->body = body; + return 0; + +failure: + html_node_free(root); + return -1; +} + +static int end_category(const struct http_payload *const p, + struct http_response *const r, void *const user, void *const args) +{ + struct view *const v = args; + const struct category *const c = &v->u.category; + + if (!c->n_secids) + { + v->end = end_topics; + + if (commit(p, r, v)) + { + fprintf(stderr, "%s: commit failed\n", __func__); + return -1; + } + } + else if (prepare_topics(v, r, c->secids, c->n_secids)) + { + fprintf(stderr, "%s: prepare_topics failed\n", __func__); + return -1; + } + + return 0; +} + +static int section(sqlite3_stmt *const stmt, + const struct http_payload *const pl, struct http_response *const r, + void *const user, void *const args) +{ + int ret = -1; + struct view *const v = args; + struct dynstr d; + struct db_section s = {0}; + struct html_node *li, *div, *a, *p; + + dynstr_init(&d); + + if (!(li = html_node_add_child(v->section_ul, "li")) + || !(div = html_node_add_child(li, "div")) + || !(a = html_node_add_child(div, "a")) + || !(p = html_node_add_child(div, "p"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (db_section(v->db, stmt, &s)) + { + fprintf(stderr, "%s: db_section failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "/view/%u/%u", s.catid, s.id)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_node_add_attr(a, "href", d.str)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, s.name) + || html_node_set_value(p, s.desc)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (append_section(&v->u.category, s.id)) + { + fprintf(stderr, "%s: append_section failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + db_section_free(&s); + return ret; +} + +static int category_tr(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct view *const v = args; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "SELECT * FROM sections WHERE " + "sections.catid = %lu ORDER BY sections.id ASC;", v->category)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + + const struct op_cfg op = + { + .end = end_category, + .error = rollback, + .row = section, + .args = v + }; + + if (!op_run(v->db, d.str, &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int view_category(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + int ret = -1; + struct view *const v = args; + struct html_node *root = NULL, *body, *div, *h2; + + if (!(root = html_node_alloc("html"))) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto failure; + } + else if (form_head(root)) + { + fprintf(stderr, "%s: form_head failed\n", __func__); + goto failure; + } + else if (!(body = html_node_add_child(root, "body"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto failure; + } + else if (form_login(body, v->username)) + { + fprintf(stderr, "%s: form_login failed\n", __func__); + goto failure; + } + else if (v->username + && v->role >= AUTH_ROLE_MOD + && form_section(body, v->category)) + { + fprintf(stderr, "%s: form_section failed\n", __func__); + goto failure; + } + else if (!(div = html_node_add_child(body, "div")) + || !(h2 = html_node_add_child(div, "h2")) + || !(v->section_ul = html_node_add_child(body, "ul"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto failure; + } + else if (html_node_set_value(h2, "Sections")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto failure; + } + + const struct op_cfg op = + { + .end = category_tr, + .error = rollback, + .args = v + }; + + if (!op_run(v->db, "BEGIN TRANSACTION;", &op, r)) + { + fprintf(stderr, "%s: op_run failed\n", __func__); + goto failure; + } + + v->root = root; + v->body = body; + return 0; + +failure: + html_node_free(root); + free_view(v); + return ret; +} + +static int parse_args(const struct http_payload *const p, struct view *const v) +{ + for (size_t i = 0; i < p->n_args; i++) + { + const struct http_arg *const arg = &p->args[i]; + const char *const key = arg->key, *const value = arg->value; + + if (!strcmp(key, "page") && getul_n(value, &v->page)) + { + fprintf(stderr, "%s: invalid page: %s\n", __func__, value); + return -1; + } + else if (!strcmp(key, "msg") && getul_n(value, &v->msg)) + { + fprintf(stderr, "%s: invalid msg: %s\n", __func__, value); + return -1; + } + } + + return 0; +} + +static int setup(const struct http_payload *const p, + struct http_response *const r, void *const user, sqlite3 *const db, + const struct auth_user *const u) +{ + int ret = -1, error; + const char *tree = p->resource + strlen("/view/"); + struct view *v = NULL; + char *userdup = NULL; + + if (!(v = malloc(sizeof *v))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + *v = (const struct view){.db = db}; + *r = (const struct http_response){.args = v}; + + if (u) + { + if (!(userdup = strdup(u->username))) + { + fprintf(stderr, "%s: strdup(3): %s\n", __func__, strerror(errno)); + goto failure; + } + else if (u->role <= AUTH_ROLE_BANNED) + { + ret = form_unauthorized("Banned account", r); + goto failure; + } + + v->username = userdup; + v->role = u->role; + } + + if (parse_args(p, v)) + { + ret = form_badreq("Invalid arguments", r); + goto failure; + } + else if (getul(&tree, &v->category)) + { + ret = form_badreq("Invalid category", r); + goto failure; + } + else if (!*tree) + r->step.payload = view_category; + else if (getul(&tree, &v->section)) + { + ret = form_badreq("Invalid section", r); + goto failure; + } + else if (!*tree) + r->step.payload = view_section; + else if (getul(&tree, &v->topic)) + { + ret = form_badreq("Invalid topic", r); + goto failure; + } + else + r->step.payload = view_topic; + + return 0; + +failure: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + + free(v); + free(userdup); + return ret; +} + +int ep_view(const struct http_payload *const p, struct http_response *const r, + void *const user) +{ + const int n = auth_validate(p, r, user, setup); + + if (n < 0) + fprintf(stderr, "%s: auth_validate failed\n", __func__); + else if (n) + { + const struct cfg *const cfg = user; + sqlite3 *db; + + if (db_open(cfg->dir, &db)) + { + fprintf(stderr, "%s: db_open failed\n", __func__); + return -1; + } + + return setup(p, r, user, db, NULL); + } + + return n; +} diff --git a/form.h b/form.h new file mode 100644 index 0000000..83d2697 --- /dev/null +++ b/form.h @@ -0,0 +1,38 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef FORM_H +#define FORM_H + +#include +#include + +int form_footer(struct html_node *n, const char *resource); +int form_login(struct html_node *n, const char *username); +int form_head(struct html_node *n); +int form_category(struct html_node *n); +int form_section(struct html_node *n, unsigned long category); +int form_topic(struct html_node *n, unsigned long category, + unsigned long section); +int form_post(struct html_node *n, unsigned long category, + unsigned long section, unsigned long topic); +int form_badreq(const char *msg, struct http_response *r); +int form_unauthorized(const char *msg, struct http_response *r); +int form_shortpwd(struct http_response *const r); + +#endif diff --git a/form_badreq.c b/form_badreq.c new file mode 100644 index 0000000..e789259 --- /dev/null +++ b/form_badreq.c @@ -0,0 +1,29 @@ +#include "form.h" +#include "defs.h" +#include +#include +#include +#include + +int form_badreq(const char *const msg, struct http_response *const r) +{ + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "%s\n%s", DOCTYPE_TAG, msg)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + return -1; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_BAD_REQUEST, + .buf.ro = d.str, + .n = d.len, + .free = free + }; + + return 0; +} diff --git a/form_category.c b/form_category.c new file mode 100644 index 0000000..34d442b --- /dev/null +++ b/form_category.c @@ -0,0 +1,40 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include +#include + +int form_category(struct html_node *const n) +{ + struct html_node *div, *form, *lname, *iname, *submit; + + if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(lname = html_node_add_child(form, "label")) + || !(iname = html_node_add_child(form, "input")) + || !(submit = html_node_add_child(form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (html_node_add_attr(form, "action", "/create/") + || html_node_add_attr(form, "form", "categoryform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(lname, "for", "name") + || html_node_add_attr(iname, "type", "text") + || html_node_add_attr(iname, "id", "name") + || html_node_add_attr(iname, "name", "name") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Create")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + return -1; + } + else if (html_node_set_value(lname, "Create category")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + return -1; + } + + return 0; +} diff --git a/form_footer.c b/form_footer.c new file mode 100644 index 0000000..c29dfd4 --- /dev/null +++ b/form_footer.c @@ -0,0 +1,105 @@ +#include "form.h" +#include "defs.h" +#include +#include +#include + +static int poweredby(struct html_node *const footer) +{ + int ret = -1; + struct html_node *const a = html_node_alloc("a"), *p; + struct dynstr d; + + dynstr_init(&d); + + if (!a) + { + fprintf(stderr, "%s: html_node_alloc failed\n", __func__); + goto end; + } + else if (!(p = html_node_add_child(footer, "p"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(a, "href", PROJECT_URL)) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(a, PROJECT_NAME)) + { + fprintf(stderr, "%s: html_node_set_value a failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "Powered by ")) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_serialize(a, &d)) + { + fprintf(stderr, "%s: html_serialize failed\n", __func__); + goto end; + } + else if (html_node_set_value_unescaped(p, d.str)) + { + fprintf(stderr, "%s: html_node_set_value_unescaped failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + html_node_free(a); + return ret; +} + +static int back(struct html_node *const footer) +{ + struct html_node *const a = html_node_add_child(footer, "a"); + + if (!a) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (html_node_add_attr(a, "href", "/")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + return -1; + } + else if (html_node_set_value(a, "Back to index")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + return -1; + } + + return 0; +} + +int form_footer(struct html_node *const n, const char *const resource) +{ + struct html_node *const footer = html_node_add_child(n, "footer"); + + if (!footer) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (strcmp(resource, "/") + && strcmp(resource, "/index.html") + && back(footer)) + { + fprintf(stderr, "%s: back failed\n", __func__); + return -1; + } + else if (poweredby(footer)) + { + fprintf(stderr, "%s: poweredby failed\n", __func__); + return -1; + } + + return 0; +} diff --git a/form_head.c b/form_head.c new file mode 100644 index 0000000..64325e9 --- /dev/null +++ b/form_head.c @@ -0,0 +1,45 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include "defs.h" +#include +#include + +#if 0 + "" + " \n" \ + " " \ + "" PROJECT_TITLE "" +#endif + +int form_head(struct html_node *const n) +{ + struct html_node *head, *link, *charset, *name, *title; + + if (!(head = html_node_add_child(n, "head")) + || !(link = html_node_add_child(head, "link")) + || !(charset = html_node_add_child(head, "meta")) + || !(name = html_node_add_child(head, "meta")) + || !(title = html_node_add_child(head, "title"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (html_node_add_attr(link, "href", "/" STYLE_PATH) + || html_node_add_attr(link, "rel", "stylesheet") + || html_node_add_attr(charset, "charset", "UTF-8") + || html_node_add_attr(name, "name", "viewport") + || html_node_add_attr(name, "content", + "width=device-width, initial-scale=1, maximum-scale=1")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + return -1; + } + else if (html_node_set_value(title, PROJECT_TITLE)) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + return -1; + } + + return 0; +} diff --git a/form_login.c b/form_login.c new file mode 100644 index 0000000..9309c78 --- /dev/null +++ b/form_login.c @@ -0,0 +1,105 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include +#include + +static int anonymous(struct html_node *const n) +{ + struct html_node *div, *form, *luser, *iuser, *lpass, *ipass, *submit, + *signup; + + if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(luser = html_node_add_child(form, "label")) + || !(iuser = html_node_add_child(form, "input")) + || !(lpass = html_node_add_child(form, "label")) + || !(ipass = html_node_add_child(form, "input")) + || !(submit = html_node_add_child(form, "input")) + || !(signup = html_node_add_child(div, "a"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + return -1; + } + else if (html_node_add_attr(form, "action", "/login") + || html_node_add_attr(form, "form", "loginform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(luser, "for", "username") + || html_node_add_attr(lpass, "for", "password") + || html_node_add_attr(iuser, "type", "text") + || html_node_add_attr(iuser, "id", "username") + || html_node_add_attr(iuser, "name", "username") + || html_node_add_attr(ipass, "type", "password") + || html_node_add_attr(ipass, "id", "password") + || html_node_add_attr(ipass, "name", "password") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Log in") + || html_node_add_attr(signup, "href", "/signup")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + return -1; + } + else if (html_node_set_value(luser, "Username:") + || html_node_set_value(lpass, "Password:") + || html_node_set_value(signup, "Sign up")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + return -1; + } + + return 0; +} + +static int loggedin(struct html_node *const n, const char *const username) +{ + int ret = -1; + struct html_node *div, *p, *form, *submit, *a; + struct dynstr d; + + dynstr_init(&d); + + if (!(div = html_node_add_child(n, "div")) + || !(p = html_node_add_child(div, "p")) + || !(form = html_node_add_child(div, "form")) + || !(submit = html_node_add_child(form, "input")) + || !(a = html_node_add_child(div, "a"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "Logged in as %s", username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (html_node_set_value(p, d.str) + || html_node_set_value(a, "User control panel")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", "/logout") + || html_node_add_attr(form, "form", "logoutform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Logout") + || html_node_add_attr(a, "href", "/ucp")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +int form_login(struct html_node *const n, const char *const username) +{ + if (!username) + return anonymous(n); + + return loggedin(n, username); +} diff --git a/form_post.c b/form_post.c new file mode 100644 index 0000000..c485a55 --- /dev/null +++ b/form_post.c @@ -0,0 +1,54 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include +#include + +int form_post(struct html_node *const n, const unsigned long category, + const unsigned long section, const unsigned long topic) +{ + int ret = -1; + struct dynstr d; + struct html_node *div, *form, *textarea, *submit; + + dynstr_init(&d); + + if (dynstr_append(&d, "/create/%lu/%lu/%lu", category, section, topic)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(textarea = html_node_add_child(form, "textarea")) + || !(submit = html_node_add_child(form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", d.str) + || html_node_add_attr(form, "form", "topicform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(textarea, "id", "post") + || html_node_add_attr(textarea, "name", "post") + || html_node_add_attr(textarea, "maxlength", "1800") + || html_node_add_attr(textarea, "cols", "72") + || html_node_add_attr(textarea, "rows", "8") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Create")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(textarea, "")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} diff --git a/form_section.c b/form_section.c new file mode 100644 index 0000000..d0bf0b1 --- /dev/null +++ b/form_section.c @@ -0,0 +1,64 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include +#include + +int form_section(struct html_node *const n, const unsigned long category) +{ + int ret = -1; + struct dynstr d; + struct html_node *div, *form, *lname, *iname, *ltitle, *ititle, *submit; + + dynstr_init(&d); + + if (dynstr_append(&d, "/create/%lu", category)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(lname = html_node_add_child(form, "label")) + || !(iname = html_node_add_child(form, "input")) + || !(ltitle = html_node_add_child(form, "label")) + || !(ititle = html_node_add_child(form, "input")) + || !(submit = html_node_add_child(form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", d.str) + || html_node_add_attr(form, "form", "sectionform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(lname, "for", "name") + || html_node_add_attr(iname, "type", "text") + || html_node_add_attr(iname, "id", "name") + || html_node_add_attr(iname, "name", "name") + || html_node_add_attr(iname, "hint", "Section name") + || html_node_add_attr(iname, "size", "40") + || html_node_add_attr(ltitle, "for", "description") + || html_node_add_attr(ititle, "type", "text") + || html_node_add_attr(ititle, "id", "title") + || html_node_add_attr(ititle, "name", "description") + || html_node_add_attr(ititle, "hint", "Section description") + || html_node_add_attr(ititle, "size", "72") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Create")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(lname, "Section name") + || html_node_set_value(ltitle, "Section description")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} diff --git a/form_shortpwd.c b/form_shortpwd.c new file mode 100644 index 0000000..63f0139 --- /dev/null +++ b/form_shortpwd.c @@ -0,0 +1,21 @@ +#include "form.h" +#include "defs.h" +#include + +int form_shortpwd(struct http_response *const r) +{ + int ret; + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "Password is too short, minimum %d bytes", MINPWDLEN)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + return -1; + } + + ret = form_badreq(d.str, r); + dynstr_free(&d); + return ret; +} diff --git a/form_topic.c b/form_topic.c new file mode 100644 index 0000000..ffd67eb --- /dev/null +++ b/form_topic.c @@ -0,0 +1,63 @@ +#define _POSIX_C_SOURCE 200809L + +#include "form.h" +#include +#include + +int form_topic(struct html_node *const n, const unsigned long category, + const unsigned long section) +{ + int ret = -1; + struct dynstr d; + struct html_node *div, *form, *lname, *iname, *textarea, *submit; + + dynstr_init(&d); + + if (dynstr_append(&d, "/create/%lu/%lu", category, section)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (!(div = html_node_add_child(n, "div")) + || !(form = html_node_add_child(div, "form")) + || !(lname = html_node_add_child(form, "label")) + || !(iname = html_node_add_child(form, "input")) + || !(textarea = html_node_add_child(form, "textarea")) + || !(submit = html_node_add_child(form, "input"))) + { + fprintf(stderr, "%s: html_node_add_child failed\n", __func__); + goto end; + } + else if (html_node_add_attr(form, "action", d.str) + || html_node_add_attr(form, "form", "topicform") + || html_node_add_attr(form, "method", "post") + || html_node_add_attr(lname, "for", "name") + || html_node_add_attr(iname, "type", "text") + || html_node_add_attr(iname, "id", "name") + || html_node_add_attr(iname, "name", "name") + || html_node_add_attr(iname, "hint", "Topic name") + || html_node_add_attr(iname, "size", "50") + || html_node_add_attr(textarea, "id", "post") + || html_node_add_attr(textarea, "name", "post") + || html_node_add_attr(textarea, "maxlength", "1800") + || html_node_add_attr(textarea, "cols", "72") + || html_node_add_attr(textarea, "rows", "8") + || html_node_add_attr(submit, "type", "submit") + || html_node_add_attr(submit, "value", "Create")) + { + fprintf(stderr, "%s: html_node_add_attr failed\n", __func__); + goto end; + } + else if (html_node_set_value(lname, "Topic name") + || html_node_set_value(textarea, "")) + { + fprintf(stderr, "%s: html_node_set_value failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} diff --git a/form_unauthorized.c b/form_unauthorized.c new file mode 100644 index 0000000..3d699f2 --- /dev/null +++ b/form_unauthorized.c @@ -0,0 +1,29 @@ +#include "form.h" +#include "defs.h" +#include +#include +#include +#include + +int form_unauthorized(const char *const msg, struct http_response *const r) +{ + struct dynstr d; + + dynstr_init(&d); + + if (dynstr_append(&d, "%s\n%s", DOCTYPE_TAG, msg)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + return -1; + } + + *r = (const struct http_response) + { + .status = HTTP_STATUS_UNAUTHORIZED, + .buf.ro = d.str, + .n = d.len, + .free = free + }; + + return 0; +} diff --git a/gencookie.c b/gencookie.c new file mode 100644 index 0000000..9a71b3e --- /dev/null +++ b/gencookie.c @@ -0,0 +1,72 @@ +#define _POSIX_C_SOURCE 200809L + +#include "jwt.h" +#include +#include +#include +#include +#include +#include +#include + +char *gencookie(const char *const name, const char *const key) +{ + char *ret = NULL, *sname = NULL, *c = NULL, *jwt = NULL; + unsigned char dkey[crypto_auth_hmacsha256_KEYBYTES]; + size_t len; + cJSON *j = NULL; + time_t t = time(NULL); + struct tm tm; + + if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + + /* Set 5-year lifetime for cookies. */ + t += 5 * 365 * 24 * 60 * 60; + + if (!localtime_r(&t, &tm)) + { + fprintf(stderr, "%s: localtime_r(3): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!(j = cJSON_CreateObject())) + { + fprintf(stderr, "%s: cJSON_CreateObject failed\n", __func__); + goto end; + } + else if (!cJSON_AddStringToObject(j, "name", name)) + { + fprintf(stderr, "%s: cJSON_AddStringToObject failed\n", __func__); + goto end; + } + else if (sodium_hex2bin(dkey, sizeof dkey, key, strlen(key), NULL, &len, + NULL)) + { + fprintf(stderr, "%s: sodium_hex2bin failed\n", __func__); + goto end; + } + else if (!(jwt = jwt_encode(j, dkey, sizeof dkey))) + { + fprintf(stderr, "%s: jwt_encode failed\n", __func__); + goto end; + } + else if (!(c = http_cookie_create(name, jwt, &tm))) + { + fprintf(stderr, "%s: http_cookie_create failed\n", __func__); + goto end; + } + + ret = c; + +end: + if (!ret) + free(c); + + free(jwt); + free(sname); + cJSON_Delete(j); + return ret; +} diff --git a/getul.c b/getul.c new file mode 100644 index 0000000..57fc394 --- /dev/null +++ b/getul.c @@ -0,0 +1,52 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#define _POSIX_C_SOURCE 200809L + +#include "utils.h" +#include +#include +#include +#include +#include + +int getul(const char **const s, unsigned long *const out) +{ + char *end; + unsigned long v; + + errno = 0; + v = strtoul(*s, &end, 10); + + if (errno) + { + fprintf(stderr, "%s: strtoul(3) %s: %s\n", __func__, *s, + strerror(errno)); + return -1; + } + else if ((*end != '/' && *end) || v > LONG_MAX || !v) + { + fprintf(stderr, "%s: invalid number: %.*s\n", __func__, + (int)(end - *s), *s); + return -1; + } + + *out = v; + *s = *end ? end + 1 : end; + return 0; +} diff --git a/getul_n.c b/getul_n.c new file mode 100644 index 0000000..cf150c9 --- /dev/null +++ b/getul_n.c @@ -0,0 +1,33 @@ +#define _POSIX_C_SOURCE 200809L + +#include "utils.h" +#include +#include +#include +#include +#include + +int getul_n(const char *const s, unsigned long *const out) +{ + char *end; + unsigned long v; + + errno = 0; + v = strtoull(s, &end, 10); + + if (errno) + { + fprintf(stderr, "%s: strtoul(3) %s: %s\n", __func__, s, + strerror(errno)); + return -1; + } + else if (*end || v > LONG_MAX) + { + fprintf(stderr, "%s: invalid number: %.*s\n", __func__, + (int)(end - s), s); + return -1; + } + + *out = v; + return 0; +} diff --git a/jwt.c b/jwt.c new file mode 100644 index 0000000..48d249a --- /dev/null +++ b/jwt.c @@ -0,0 +1,229 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#include "jwt.h" +#include +#include +#include +#include +#include +#include +#include + +#define VARIANT sodium_base64_VARIANT_URLSAFE + +static char *b64(const void *const p, const size_t len) +{ + char *ret = NULL; + const size_t n = sodium_base64_encoded_len(len, VARIANT); + + if (!(ret = malloc(n))) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + return NULL; + } + else if (!sodium_bin2base64(ret, n, p, len, VARIANT)) + { + fprintf(stderr, "%s: sodium_bin2base64 failed\n", __func__); + free(ret); + return NULL; + } + + return ret; +} + +static int b64d(const char *const b64, const size_t len, void **const outbuf, + size_t *const outsz) +{ + int ret = 1; + size_t sz = 0, binlen; + const char *end; + void *buf = NULL, *p; + +again: + + if (!(p = realloc(buf, ++sz))) + { + fprintf(stderr, "%s: realloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + else if (sodium_base642bin(buf = p, sz, b64, len, NULL, &binlen, &end, + VARIANT)) + { + if (errno == ERANGE) + goto again; + + fprintf(stderr, "%s: sodium_base642bin failed\n", __func__); + goto failure; + } + + *outbuf = buf; + *outsz = sz; + return 0; + +failure: + free(buf); + return ret; +} + +static char *get_hmac(const void *const buf, const size_t n, + const void *const key, const size_t keyn) +{ + unsigned char hmac[crypto_auth_hmacsha256_KEYBYTES]; + char *ret; + + if (keyn != crypto_auth_hmacsha256_KEYBYTES) + { + fprintf(stderr, "%s: invalid key size (%zu), expected %u\n", __func__, + n, crypto_auth_hmacsha256_KEYBYTES); + return NULL; + } + else if (crypto_auth_hmacsha256(hmac, buf, n, key)) + { + fprintf(stderr, "%s: HMAC failed\n", __func__); + return NULL; + } + else if (!(ret = b64(hmac, sizeof hmac))) + fprintf(stderr, "%s: b64 failed\n", __func__); + + return ret; +} + +char *jwt_encode(const cJSON *const j, const void *const key, const size_t n) +{ + static const char jwt_header[] = "{\"alg\": \"HS256\", \"typ\": \"JWT\"}"; + struct dynstr d; + char *ret = NULL, *p = NULL, *header = NULL, *hmac = NULL, *encp = NULL; + + dynstr_init(&d); + + if (!(p = cJSON_PrintUnformatted(j))) + { + fprintf(stderr, "%s: cJSON_PrintUnformatted failed\n", __func__); + goto end; + } + else if (!(encp = b64(p, strlen(p)))) + { + fprintf(stderr, "%s: b64 %s failed\n", __func__, p); + goto end; + } + else if (!(header = b64(jwt_header, strlen(jwt_header)))) + { + fprintf(stderr, "%s: b64 %s failed\n", __func__, jwt_header); + } + else if (dynstr_append(&d, "%s.%s", header, encp)) + { + fprintf(stderr, "%s: dynstr_append header+payload failed", __func__); + goto end; + } + else if (!(hmac = get_hmac(d.str, d.len, key, n))) + { + fprintf(stderr, "%s: get_hmac failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, ".%s", hmac)) + { + fprintf(stderr, "%s: dynstr_append hmac failed\n", __func__); + goto end; + } + + ret = d.str; + +end: + free(header); + free(hmac); + free(encp); + cJSON_free(p); + + if (!ret) + dynstr_free(&d); + + return ret; +} + +static size_t cnt(const char *s, const char c) +{ + size_t ret = 0; + + while (*s) + if (*s++ == c) + ret++; + + return ret; +} + +int jwt_decode(const char *const jwt, const void *const key, const size_t n, + cJSON **const payload) +{ + int ret = 1; + cJSON *j = NULL; + void *p = NULL; + const char *first = strchr(jwt, '.'), *const last = strrchr(jwt, '.'); + const unsigned char *const in = (const unsigned char *)jwt; + unsigned char hmac[crypto_auth_hmacsha256_KEYBYTES]; + size_t sz; + + if (n != crypto_auth_hmacsha256_KEYBYTES) + { + fprintf(stderr, "%s: invalid key size (%zu), expected %u\n", __func__, + n, crypto_auth_hmacsha256_KEYBYTES); + ret = -1; + goto end; + } + else if (cnt(jwt, '.') != 2 || ++first == last) + goto end; + else if (sodium_base642bin(hmac, sizeof hmac, last + 1, strlen(last + 1), + NULL, NULL, NULL, VARIANT)) + { + fprintf(stderr, "%s: sodium_base642bin failed\n", __func__); + goto end; + } + else if (crypto_auth_hmacsha256_verify(hmac, in, last - jwt, key)) + { + fprintf(stderr, "%s: crypto_auth_hmacsha256_verify failed\n", __func__); + goto end; + } + else if ((ret = b64d(first, last - first, &p, &sz))) + { + if (ret < 0) + fprintf(stderr, "%s: b64d failed\n", __func__); + + goto end; + } + else if (!(j = cJSON_ParseWithLength(p, sz))) + { + fprintf(stderr, "%s: cJSON_ParseWithLength failed\n", __func__); + goto end; + } + else if (!cJSON_IsObject(j)) + { + fprintf(stderr, "%s: cJSON_IsObject failed\n", __func__); + goto end; + } + + *payload = j; + ret = 0; + +end: + + if (ret) + cJSON_Delete(j); + + free(p); + return ret; +} diff --git a/jwt.h b/jwt.h new file mode 100644 index 0000000..af7e257 --- /dev/null +++ b/jwt.h @@ -0,0 +1,28 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef JWT_H +#define JWT_H + +#include +#include + +char *jwt_encode(const cJSON *payload, const void *key, size_t n); +int jwt_decode(const char *jwt, const void *key, size_t n, cJSON **payload); + +#endif /* JWT_H */ diff --git a/login_get.c b/login_get.c new file mode 100644 index 0000000..0699cbc --- /dev/null +++ b/login_get.c @@ -0,0 +1,49 @@ +#define _POSIX_C_SOURCE 200809L + +#include "endpoints.h" +#include "defs.h" +#include + +#define LOGIN_BODY \ + "
\n" \ + " " PROJECT_NAME ", " \ + PROJECT_DESC "\n" \ + "
\n" \ + "
\n" \ + " \n" \ + "
\n" \ + " \n" \ + "
\n" \ + " \n" \ + "
\n" + +int ep_login_get(const struct http_payload *const p, + struct http_response *const r, void *const user) +{ + static const char body[] = + DOCTYPE_TAG + "\n" + " \n" + " " STYLE_A "\n" + " " COMMON_HEAD "\n" + " \n" + " " LOGIN_BODY "\n" + "\n"; + + *r = (const struct http_response) + { + .status = HTTP_STATUS_OK, + .buf.ro = body, + .n = sizeof body - 1 + }; + + if (http_response_add_header(r, "Content-Type", "text/html")) + { + fprintf(stderr, "%s: http_response_add_header failed\n", __func__); + return -1; + } + + return 0; +} diff --git a/main.c b/main.c new file mode 100644 index 0000000..5ef8681 --- /dev/null +++ b/main.c @@ -0,0 +1,648 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +/* As of FreeBSD 13.2, sigaction(2) still conforms to IEEE Std + * 1003.1-1990 (POSIX.1), which did not define SA_RESTART. + * FreeBSD supports it as an extension, but then _POSIX_C_SOURCE must + * not be defined. */ +#ifndef __FreeBSD__ +#define _POSIX_C_SOURCE 200809L +#endif + +#include "db.h" +#include "defs.h" +#include "default.h" +#include "endpoints.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct handler *handler; + +static void usage(char *const argv[]) +{ + fprintf(stderr, "%s [-t tmpdir] [-p port] dir\n", *argv); +} + +static int parse_args(const int argc, char *const argv[], + const char **const dir, unsigned short *const port, + const char **const tmpdir) +{ + const char *const envtmp = getenv("TMPDIR"); + int opt; + + /* Default values. */ + *port = 0; + *tmpdir = envtmp ? envtmp : "/tmp"; + + while ((opt = getopt(argc, argv, "t:p:")) != -1) + { + switch (opt) + { + case 't': + *tmpdir = optarg; + break; + + case 'p': + { + char *endptr; + const unsigned long portul = strtoul(optarg, &endptr, 10); + + if (*endptr || portul > UINT16_MAX) + { + fprintf(stderr, "%s: invalid port %s\n", __func__, optarg); + return -1; + } + + *port = portul; + } + break; + + default: + usage(argv); + return -1; + } + } + + if (optind >= argc) + { + usage(argv); + return -1; + } + + *dir = argv[optind]; + return 0; +} + +static int ensure_dir(const char *const dir) +{ + struct stat sb; + + if (stat(dir, &sb)) + { + switch (errno) + { + case ENOENT: + if (mkdir(dir, S_IRWXU)) + { + fprintf(stderr, "%s: mkdir(2) %s: %s\n", + __func__, dir, strerror(errno)); + return -1; + } + + printf("Created empty directory at %s\n", dir); + break; + + default: + fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno)); + return -1; + } + } + else if (!S_ISDIR(sb.st_mode)) + { + fprintf(stderr, "%s: %s not a directory\n", __func__, dir); + return -1; + } + + return 0; +} + +static int dump_file(const char *const path, const void *const buf, + const size_t n) +{ + int ret = -1; + FILE *const f = fopen(path, "wb"); + + if (!f) + { + fprintf(stderr, "%s: fopen(3) %s: %s\n", + __func__, path, strerror(errno)); + goto end; + } + else if (!fwrite(buf, n, 1, f)) + { + fprintf(stderr, "%s: fwrite(3): %s\n", __func__, strerror(errno)); + goto end; + } + + ret = 0; + +end: + if (f && fclose(f)) + { + fprintf(stderr, "%s: fclose(3): %s\n", __func__, strerror(errno)); + ret = -1; + } + + return ret; +} + +static int dump_default_style(const char *const path) +{ + if (dump_file(path, default_style, default_style_len)) + return -1; + + printf("Dumped default stylesheet into %s\n", path); + return 0; +} + +static int dump_default_terms(const char *const path) +{ + if (dump_file(path, default_terms, default_terms_len)) + return -1; + + printf("Dumped default terms of service into %s\n", path); + return 0; +} + +static int dump_default_prv_policy(const char *const path) +{ + if (dump_file(path, default_prv_policy, default_prv_policy_len)) + return -1; + + printf("Dumped default privacy policy into %s\n", path); + return 0; +} + +static int ensure_file(const char *const dir, const char *const f, + int (*const fn)(const char *)) +{ + int ret = -1; + struct dynstr d; + struct stat sb; + + dynstr_init(&d); + + if (dynstr_append(&d, "%s/%s", dir, f)) + { + fprintf(stderr, "%s: dynstr_append user failed\n", __func__); + goto end; + } + else if (stat(d.str, &sb)) + { + if (errno == ENOENT) + { + if (fn(d.str)) + { + fprintf(stderr, "%s: user callback failed\n", __func__); + goto end; + } + } + else + { + fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno)); + goto end; + } + } + else if (!S_ISREG(sb.st_mode)) + { + fprintf(stderr, "%s: %s not a regular file\n", __func__, d.str); + return -1; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int ensure_style(const char *const dir) +{ + return ensure_file(dir, STYLE_PATH, dump_default_style); +} + +static int ensure_terms(const char *const dir) +{ + return ensure_file(dir, TERMS_PATH, dump_default_terms); +} + +static int ensure_prv_policy(const char *const dir) +{ + return ensure_file(dir, PRV_PATH, dump_default_prv_policy); +} + +static void handle_signal(const int signum) +{ + switch (signum) + { + case SIGINT: + /* Fall through. */ + case SIGTERM: + handler_notify_close(handler); + break; + + default: + break; + } +} + +static int init_signals(void) +{ + struct sigaction sa = + { + .sa_handler = handle_signal, + .sa_flags = SA_RESTART + }; + + sigemptyset(&sa.sa_mask); + + static const struct signal + { + int signal; + const char *name; + } signals[] = + { + {.signal = SIGINT, .name = "SIGINT"}, + {.signal = SIGTERM, .name = "SIGTERM"}, + {.signal = SIGPIPE, .name = "SIGPIPE"} + }; + + for (size_t i = 0; i < sizeof signals / sizeof *signals; i++) + { + const struct signal *const s = &signals[i]; + + if (sigaction(s->signal, &sa, NULL)) + { + fprintf(stderr, "%s: sigaction(2) %s: %s\n", + __func__, s->name, strerror(errno)); + return -1; + } + } + + return 0; +} + +static int add_urls(struct handler *const h, void *const user) +{ + static const struct url + { + const char *url; + enum http_op op; + handler_fn f; + } urls[] = + { + {.url = "/", .op = HTTP_OP_GET, .f = ep_index}, + {.url = "/view/*", .op = HTTP_OP_GET, .f = ep_view}, + {.url = "/index.html", .op = HTTP_OP_GET, .f = ep_index}, + {.url = "/style.css", .op = HTTP_OP_GET, .f = ep_style}, + {.url = "/login", .op = HTTP_OP_POST, .f = ep_login}, + {.url = "/logout", .op = HTTP_OP_POST, .f = ep_logout}, + {.url = "/signup", .op = HTTP_OP_GET, .f = ep_signup}, + {.url = "/signup", .op = HTTP_OP_POST, .f = ep_signup}, + {.url = "/passwd", .op = HTTP_OP_POST, .f = ep_passwd}, + {.url = "/create/*", .op = HTTP_OP_POST, .f = ep_create}, + {.url = "/ucp", .op = HTTP_OP_GET, .f = ep_ucp} + }; + + for (size_t i = 0; i < sizeof urls / sizeof *urls; i++) + { + const struct url *const u = &urls[i]; + + if (handler_add(h, u->url, u->op, u->f, user)) + { + fprintf(stderr, "%s: handler_add %s failed\n", __func__, u->url); + return -1; + } + } + + return 0; +} + +static int check_length(const enum http_op op, const char *const res, + const unsigned long long len, const struct http_cookie *const c, + struct http_response *const r, void *const user) +{ + return 1; +} + +static int statement(sqlite3 *const db, const char *const st) +{ + int ret = -1; + sqlite3_stmt *stmt = NULL; + int error = sqlite3_prepare_v2(db, st, -1, &stmt, NULL); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_prepare_v2 \"%s\": %s\n", __func__, st, + sqlite3_errstr(error)); + goto end; + } + + while ((error = sqlite3_step(stmt)) == SQLITE_BUSY) + ; + + if (error != SQLITE_DONE) + { + sqlite3_reset(stmt); + fprintf(stderr, "%s: sqlite3_step: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + + ret = 0; + +end: + + if ((error = sqlite3_finalize(stmt))) + { + fprintf(stderr, "%s: sqlite3_finalize: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + return ret; +} + +static int ensure_admin(sqlite3 *const db) +{ + int ret = -1, error; + sqlite3_stmt *stmt = NULL; + unsigned char key[crypto_auth_hmacsha256_KEYBYTES]; + char hashpwd[crypto_pwhash_STRBYTES], enckey[sizeof key * 2 + 1]; + struct dynstr d; + static const char username[] = "admin", password[] = "1234"; + const time_t t = time(NULL); + + dynstr_init(&d); + crypto_auth_hmacsha256_keygen(key); + + if (t == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!sodium_bin2hex(enckey, sizeof enckey, key, sizeof key)) + { + fprintf(stderr, "%s: sodium_bin2hex failed\n", __func__); + goto end; + } + else if (crypto_pwhash_str(hashpwd, password, strlen(password), + crypto_pwhash_OPSLIMIT_INTERACTIVE, crypto_pwhash_MEMLIMIT_INTERACTIVE)) + { + fprintf(stderr, "%s: crypto_pwhash_str failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT INTO " + "users(name, password, signkey, creat, roleid) VALUES" + "('%s', '%s', '%s', %jd, (SELECT id FROM roles WHERE name = '%s'));", + username, hashpwd, enckey, (intmax_t)t, username)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((error = sqlite3_prepare_v2(db, d.str, d.len, &stmt, NULL) + != SQLITE_OK)) + { + fprintf(stderr, "%s: sqlite3_prepare_v2 \"%s\": %s\n", __func__, + d.str, sqlite3_errstr(error)); + goto end; + } + + while ((error = sqlite3_step(stmt)) == SQLITE_BUSY) + ; + + if (error == SQLITE_DONE) + fprintf(stderr, "Created default '%s' user with password '%s'. " + "Please change its password before deploying.\n", username, + password); + else + { + sqlite3_reset(stmt); + + if (error != SQLITE_CONSTRAINT) + { + fprintf(stderr, "%s: sqlite3_step: %s\n", __func__, + sqlite3_errstr(error)); + goto end; + } + } + + ret = 0; + +end: + + if ((error = sqlite3_finalize(stmt)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_finalize: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + dynstr_free(&d); + return ret; +} + +static int ensure_tokenkey(sqlite3 *const db) +{ + int ret = -1; + struct dynstr d; + unsigned char key[32]; + char enckey[sizeof key * 2 + 1]; + + dynstr_init(&d); + randombytes_buf(key, sizeof key); + + if (!sodium_bin2hex(enckey, sizeof enckey, key, sizeof key)) + { + fprintf(stderr, "%s: sodium_bin2hex failed\n", __func__); + goto end; + } + else if (dynstr_append(&d, "INSERT OR IGNORE INTO globals(key, value) " + "VALUES('tokenkey', '%s');", enckey)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if (statement(db, d.str)) + { + fprintf(stderr, "%s: statement failed\n", __func__); + goto end; + } + + ret = 0; + +end: + dynstr_free(&d); + return ret; +} + +static int ensure_tables(const char *const dir) +{ + static const char roles[] = "CREATE TABLE IF NOT EXISTS roles (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "name TEXT NOT NULL UNIQUE" + ");", + users[] = "CREATE TABLE IF NOT EXISTS users (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "name TEXT NOT NULL UNIQUE," + "password TEXT NOT NULL," + "signkey TEXT NOT NULL," + "creat BIGINT NOT NULL," + "thumbnail BLOB," + "roleid INTEGER NOT NULL," + "FOREIGN KEY (roleid) REFERENCES roles (id)" + ");", + categories[] = "CREATE TABLE IF NOT EXISTS categories (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "name TEXT NOT NULL" + ");", + sections[] = "CREATE TABLE IF NOT EXISTS sections (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "name TEXT NOT NULL," + "description TEXT NOT NULL," + "catid INTEGER NOT NULL," + "FOREIGN KEY (catid) REFERENCES categories (id)" + ");", + topics[] = "CREATE TABLE IF NOT EXISTS topics (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "title TEXT NOT NULL," + "creat INTEGER NOT NULL," + "secid INTEGER NOT NULL," + "uid INTEGER NOT NULL," + "FOREIGN KEY (secid) REFERENCES sections (id)" + "FOREIGN KEY (uid) REFERENCES users (id)" + ");", + posts[] = "CREATE TABLE IF NOT EXISTS posts (" + "id INTEGER PRIMARY KEY AUTOINCREMENT," + "text TEXT NOT NULL," + "creat BIGINT NOT NULL," + "uid INTEGER NOT NULL," + "topid INTEGER NOT NULL," + "FOREIGN KEY (topid) REFERENCES topics (id)," + "FOREIGN KEY (uid) REFERENCES users (id)" + ");", + globals[] = "CREATE TABLE IF NOT EXISTS globals (" + "id INTEGER PRIMARY KEY," + "key TEXT NOT NULL UNIQUE," + "value TEXT NOT NULL" + ");", + role_insert[] = "INSERT OR IGNORE INTO roles(name) " + "VALUES('admin'),('mod'),('user'),('banned');", + version_insert[] = "INSERT OR IGNORE INTO globals(key, value) " + "VALUES('version', '1');"; + + int ret = -1, error; + sqlite3 *db = NULL; + + if (db_open(dir, &db)) + { + fprintf(stderr, "%s: db_open failed\n", __func__); + goto end; + } + else if (statement(db, "BEGIN TRANSACTION;") + || statement(db, roles) + || statement(db, role_insert) + || statement(db, users) + || statement(db, categories) + || statement(db, sections) + || statement(db, topics) + || statement(db, posts) + || statement(db, globals) + || statement(db, version_insert) + || ensure_tokenkey(db) + || ensure_admin(db) + || statement(db, "COMMIT;")) + { + if (statement(db, "ROLLBACK;")) + fprintf(stderr, "%s: rollback failed\n", __func__); + + goto end; + } + + ret = 0; + +end: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + return ret; +} + +int main(int argc, char *argv[]) +{ + int ret = EXIT_FAILURE; + const char *dir, *tmpdir; + unsigned short port; + + if (sodium_init()) + { + fprintf(stderr, "%s: sodium_init failed\n", __func__); + goto end; + } + else if (parse_args(argc, argv, &dir, &port, &tmpdir) + || ensure_dir(dir) + || ensure_terms(dir) + || ensure_prv_policy(dir) + || ensure_style(dir) + || ensure_tables(dir)) + goto end; + + const struct handler_cfg cfg = + { + .length = check_length, + .tmpdir = tmpdir, + /* Arbitrary limit. */ + .max_headers = 25, + .post = + { + /* Arbitrary limit. */ + .max_files = 1, + /* File upload only requires one pair. */ + .max_pairs = 1 + } + }; + + unsigned short outport; + struct cfg c = {.dir = dir}; + + if (!(handler = handler_alloc(&cfg)) + || add_urls(handler, &c) + || init_signals() + || handler_listen(handler, port, &outport)) + goto end; + + printf("Listening on port %hu\n", outport); + + if (handler_loop(handler)) + { + fprintf(stderr, "%s: handler_loop failed\n", __func__); + goto end; + } + + ret = EXIT_SUCCESS; + +end: + handler_free(handler); + return ret; +} diff --git a/op.c b/op.c new file mode 100644 index 0000000..ead1ae5 --- /dev/null +++ b/op.c @@ -0,0 +1,183 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#include "op.h" +#include +#include +#include +#include +#include + +struct op +{ + sqlite3_stmt *stmt; + struct op_cfg cfg; +}; + +static int teardown(struct op *const op) +{ + int ret = 0, error; + + if (!op) + return 0; + else if ((error = sqlite3_finalize(op->stmt)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_finalize: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + } + + const struct op_cfg *const cfg = &op->cfg; + + if (cfg->error) + cfg->error(cfg->args); + + free(op); + return ret; +} + +static void run_error(void *const p) +{ + teardown(p); +} + +static int run(const struct http_payload *const pl, + struct http_response *const r, void *const user, void *const args) +{ + struct op *const op = args; + sqlite3_stmt *const stmt = op->stmt; + const struct op_cfg *const cfg = &op->cfg; + int ret = -1, error = sqlite3_step(stmt); + + switch (error) + { + case SQLITE_BUSY: + break; + + case SQLITE_ROW: + if (!cfg->row) + { + fprintf(stderr, "%s: expected row callback\n", __func__); + goto failure; + } + else if ((ret = cfg->row(op->stmt, pl, r, user, cfg->args))) + goto failure; + + break; + + case SQLITE_CONSTRAINT: + sqlite3_reset(op->stmt); + + if (!cfg->constraint) + { + fprintf(stderr, "%s: expected constraint callback\n", __func__); + goto failure; + } + else if ((ret = cfg->constraint(cfg->args))) + goto failure; + + /* Fall through. */ + case SQLITE_DONE: + { + const int error = sqlite3_finalize(op->stmt); + + if (error != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_finalize: %s\n", __func__, + sqlite3_errstr(error)); + ret = -1; + goto failure; + } + else if (cfg->end && (ret = cfg->end(pl, r, user, cfg->args))) + goto failure; + + free(op); + } + break; + + default: + fprintf(stderr, "%s: sqlite3_step: %s\n", __func__, + sqlite3_errstr(error)); + sqlite3_reset(stmt); + goto failure; + } + + return 0; + +failure: + + if (teardown(op)) + { + fprintf(stderr, "%s: teardown failed\n", __func__); + ret = -1; + } + + return ret; +} + +void op_resume(struct op *const op, struct http_response *const r) +{ + *r = (const struct http_response) + { + .step.payload = run, + .free = run_error, + .args = op + }; +} + +struct op *op_run(sqlite3 *const db, const char *const query, + const struct op_cfg *const cfg, struct http_response *const r) +{ + sqlite3_stmt *stmt = NULL; + struct op *const ret = malloc(sizeof *ret); + + if (!ret) + { + fprintf(stderr, "%s: malloc(3): %s\n", __func__, strerror(errno)); + goto failure; + } + + const int error = sqlite3_prepare_v2(db, query, -1, &stmt, NULL); + + if (error != SQLITE_OK && error != SQLITE_BUSY) + { + fprintf(stderr, "%s: sqlite3_prepare_v2 \"%s\": %s\n", __func__, + query, sqlite3_errstr(error)); + goto failure; + } + + *r = (const struct http_response) + { + .step.payload = run, + .free = run_error, + .args = ret + }; + + *ret = (const struct op) + { + .stmt = stmt, + .cfg = *cfg + }; + + return ret; + +failure: + free(ret); + sqlite3_finalize(stmt); + return NULL; +} diff --git a/op.h b/op.h new file mode 100644 index 0000000..ebd0923 --- /dev/null +++ b/op.h @@ -0,0 +1,40 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef OP_H +#define OP_H + +#include +#include + +struct op_cfg +{ + int (*constraint)(void *args); + void (*error)(void *args); + int (*row)(sqlite3_stmt *stmt, const struct http_payload *p, + struct http_response *r, void *user, void *args); + int (*end)(const struct http_payload *p, + struct http_response *r, void *user, void *args); + void *args; +}; + +struct op *op_run(sqlite3 *db, const char *query, const struct op_cfg *cfg, + struct http_response *r); +void op_resume(struct op *op, struct http_response *r); + +#endif diff --git a/sanitize.c b/sanitize.c new file mode 100644 index 0000000..50aee3b --- /dev/null +++ b/sanitize.c @@ -0,0 +1,54 @@ +#define _POSIX_C_SOURCE 200809L + +#include "utils.h" +#include +#include +#include +#include + +char *sanitize(const char *s) +{ + struct dynstr d; + + dynstr_init(&d); + + while (*s) + { + char ss[sizeof "\"\""] = {0}; + + switch (*s) + { + case '\'': + strcpy(ss, "\'\'"); + break; + + case '\"': + strcpy(ss, "\"\""); + break; + + default: + *ss = *s; + break; + } + + if (dynstr_append(&d, "%s", ss)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + s++; + } + + if (!d.str && dynstr_append(&d, "%c", '\0')) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto failure; + } + + return d.str; + +failure: + dynstr_free(&d); + return NULL; +} diff --git a/tokengen.c b/tokengen.c new file mode 100644 index 0000000..9b88085 --- /dev/null +++ b/tokengen.c @@ -0,0 +1,155 @@ +#define _POSIX_C_SOURCE 200809L + +#include "jwt.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int tokenkey(void *const args, const int n, char **const values, + char **const keys) +{ + char *key; + + if (n != 1) + { + fprintf(stderr, "%s: expected 1 key only, got %d\n", __func__, n); + return -1; + } + else if (!(key = strdup(*values))) + { + fprintf(stderr, "%s: strdup(3): %s\n", __func__, strerror(errno)); + return -1; + } + + *(char **)args = key; + return 0; +} + +static int process(sqlite3 *const db, const char *const user) +{ + static const char query[] = "SELECT value FROM globals " + "WHERE key = 'tokenkey';"; + int ret = -1, error; + cJSON *j = NULL; + char *s = NULL, *key = NULL, *jwt = NULL; + unsigned char dkey[32]; + time_t t; + + if ((error = sqlite3_exec(db, query, tokenkey, &key, &s)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_exec \"%s\": %s (%s)\n", __func__, query, + sqlite3_errstr(error), s); + goto end; + } + else if (strlen(key) != sizeof dkey * 2) + { + fprintf(stderr, "%s: unexpected key length: %zu\n", __func__, + strlen(key)); + goto end; + } + else if (sodium_hex2bin(dkey, sizeof dkey, key, strlen(key), NULL, NULL, + NULL)) + { + fprintf(stderr, "%s: sodium_hex2bin failed\n", __func__); + goto end; + } + else if (!(j = cJSON_CreateObject())) + { + fprintf(stderr, "%s: cJSON_CreateObject failed\n", __func__); + goto end; + } + else if (!cJSON_AddStringToObject(j, "name", user)) + { + fprintf(stderr, "%s: cJSON_AddStringToObject failed\n", __func__); + goto end; + } + else if ((t = time(NULL)) == (time_t)-1) + { + fprintf(stderr, "%s: time(2): %s\n", __func__, strerror(errno)); + goto end; + } + else if (!cJSON_AddNumberToObject(j, "exp", t + 24 * 60 * 60)) + { + fprintf(stderr, "%s: cJSON_AddNumberToObject failed\n", __func__); + goto end; + } + else if (!(jwt = jwt_encode(j, dkey, sizeof dkey))) + { + fprintf(stderr, "%s: jwt_encode failed\n", __func__); + goto end; + } + + printf("%s %s\n", user, jwt); + ret = 0; + +end: + free(jwt); + free(key); + sqlite3_free(s); + cJSON_Delete(j); + return ret; +} + +static sqlite3 *open_db(const char *const dir) +{ + sqlite3 *ret = NULL, *db = NULL; + struct dynstr d; + int error; + + dynstr_init(&d); + + if (dynstr_append(&d, "%s/nanobbs.db", dir)) + { + fprintf(stderr, "%s: dynstr_append failed\n", __func__); + goto end; + } + else if ((error = sqlite3_open(d.str, &db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_open %s: %s\n", __func__, d.str, + sqlite3_errstr(error)); + goto end; + } + + ret = db; + +end: + dynstr_free(&d); + return ret; +} + +int main(int argc, char *argv[]) +{ + int ret = EXIT_FAILURE, error; + sqlite3 *db = NULL; + + if (argc < 3) + { + fprintf(stderr, "%s [...]\n", *argv); + goto end; + } + else if (!(db = open_db(argv[1]))) + goto end; + + for (int i = 2; i < argc; i++) + if (process(db, argv[i])) + goto end; + + ret = EXIT_SUCCESS; + +end: + + if ((error = sqlite3_close(db)) != SQLITE_OK) + { + fprintf(stderr, "%s: sqlite3_close: %s\n", __func__, + sqlite3_errstr(error)); + ret = EXIT_FAILURE; + } + + return ret; +} diff --git a/utils.h b/utils.h new file mode 100644 index 0000000..5338e64 --- /dev/null +++ b/utils.h @@ -0,0 +1,30 @@ +/* + * nanobbs, a tiny forums software. + * Copyright (C) 2025-2026 Xavier Del Campo Romero + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + */ + +#ifndef UTILS_H +#define UTILS_H + +#include + +char *astrftime(const char *fmt, const struct tm *tm); +int getul(const char **s, unsigned long *out); +int getul_n(const char *s, unsigned long *out); +char *sanitize(const char *s); +char *gencookie(const char *name, const char *key); + +#endif -- cgit v1.2.3