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|
#define _POSIX_C_SOURCE 200809L
#include "page.h"
#include "zip.h"
#include <libweb/html.h>
#include <libweb/http.h>
#include <dynstr.h>
#include <dirent.h>
#include <fcntl.h>
#include <libgen.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#define PROJECT_NAME "slcl"
#define PROJECT_TITLE PROJECT_NAME ", a simple and lightweight cloud"
#define PROJECT_TAG "<title>" PROJECT_TITLE "</title>"
#define DOCTYPE_TAG "<!DOCTYPE html>\n"
#define PROJECT_URL "https://gitea.privatedns.org/xavi/" PROJECT_NAME
#define COMMON_HEAD \
" <meta charset=\"UTF-8\">\n" \
" <meta name=\"viewport\"\n" \
" content=\"width=device-width, initial-scale=1,\n" \
" maximum-scale=1\">\n" \
PROJECT_TAG "\n"
#define STYLE_A "<link href=\"/style.css\" rel=\"stylesheet\">"
#define LOGIN_BODY \
"<header>\n" \
" <a href=\"" PROJECT_URL "\">" PROJECT_NAME "</a>," \
" a simple and lightweight cloud\n" \
"</header>\n" \
" <form class=\"loginform\" action=\"/login\" method=\"post\">\n" \
" <label for=\"username\">Username:</label>\n" \
" <input type=\"text\" class=\"form-control\"\n" \
" id=\"username\" name=\"username\" autofocus><br>\n" \
" <label for=\"username\">Password:</label>\n" \
" <input type=\"password\" class=\"form-control\" \n" \
" id=\"password\" name=\"password\"><br>\n" \
" <input type=\"submit\" value=\"Submit\">\n" \
" </form>\n"
#define MAXSIZEFMT "18446744073709551615.0 XiB"
#define RM_FORM_ID "rm"
struct element_stats
{
unsigned long long n_dirs, n_files, cur_page, n_pages;
};
enum {THUMBNAIL, NAME, SIZE, DATE, SHARE, DOWNLOAD, RM_CHECKBOX, COLUMNS};
static int prepare_rm_checkbox(struct html_node *const n,
const struct stat *const sb, const char *const name)
{
int ret = -1;
const char *const sep = S_ISDIR(sb->st_mode) ? "/" : "";
struct html_node *input;
struct dynstr d;
dynstr_init(&d);
if (dynstr_append(&d, "%s%s", name, sep))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (!(input = html_node_add_child(n, "input")))
{
fprintf(stderr, "%s: html_node_add_child input failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "type", "checkbox"))
{
fprintf(stderr, "%s: html_node_add_attr type failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "form", RM_FORM_ID))
{
fprintf(stderr, "%s: html_node_add_attr form failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "name", "path"))
{
fprintf(stderr, "%s: html_node_add_attr name failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "value", d.str))
{
fprintf(stderr, "%s: html_node_add_attr value failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
static int prepare_thumbnail(struct html_node *const n,
const struct stat *const sb, const struct page_resource *const pr,
const char *const name, const char *const sep)
{
int ret = -1;
struct html_node *img;
struct dynstr abs, rel;
struct stat tsb;
dynstr_init(&abs);
dynstr_init(&rel);
if (!S_ISREG(sb->st_mode))
{
ret = 0;
goto end;
}
else if (!pr->adir || !pr->username)
{
ret = 0;
goto end;
}
else if (dynstr_append(&rel, "/thumbnails/%s%s%s%s",
pr->username, pr->dir + strlen("/user"), sep, name))
{
fprintf(stderr, "%s: dynstr_append rel failed\n", __func__);
goto end;
}
else if (dynstr_append(&abs, "%s%s", pr->adir, rel.str))
{
fprintf(stderr, "%s: dynstr_append rel failed\n", __func__);
goto end;
}
else if (stat(abs.str, &tsb))
{
if (errno == ENOENT)
ret = 0;
else
fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno));
goto end;
}
else if (!(img = html_node_add_child(n, "img")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (html_node_add_attr(img, "src", rel.str))
{
fprintf(stderr, "%s: html_node_add_attr src failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&abs);
dynstr_free(&rel);
return ret;
}
static int prepare_name(struct html_node *const n, struct stat *const sb,
const char *const dir, const char *const name)
{
int ret = -1;
struct html_node *a;
struct dynstr d, dname;
const char *const sep = S_ISDIR(sb->st_mode) ? "/" : "", *href;
char *encurl = NULL;
dynstr_init(&d);
dynstr_init(&dname);
if (dynstr_append(&d, "%s%s%s", dir, name, sep))
{
fprintf(stderr, "%s: dynstr_append [1] failed\n", __func__);
goto end;
}
else if (!(a = html_node_add_child(n, "a")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (!(encurl = http_encode_url(d.str)))
{
fprintf(stderr, "%s: http_encode_url failed\n", __func__);
goto end;
}
else if (S_ISDIR(sb->st_mode))
href = encurl;
else
{
dynstr_free(&d);
if (dynstr_append(&d, "%s?preview=1", encurl))
{
fprintf(stderr, "%s: dynstr_append [2] failed\n", __func__);
goto end;
}
href = d.str;
}
if (html_node_add_attr(a, "href", href))
{
fprintf(stderr, "%s: html_node_add_attr href failed\n", __func__);
goto end;
}
else if (dynstr_append(&dname, "%s%s", name, sep))
{
fprintf(stderr, "%s: dynstr_append [3] failed\n", __func__);
goto end;
}
else if (html_node_set_value(a, dname.str))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
dynstr_free(&dname);
free(encurl);
return ret;
}
static int size_units(const unsigned long long b, char *const buf,
const size_t n)
{
static const char *const suffixes[] = {"B", "KiB", "MiB", "GiB", "TiB"};
float sz;
size_t suffix_i;
for (sz = b, suffix_i = 0; (unsigned long long)sz / 1024;
suffix_i++, sz /= 1024.0f)
;
if (suffix_i >= sizeof suffixes / sizeof *suffixes)
{
fprintf(stderr, "%s: maximum suffix exceeded\n", __func__);
return -1;
}
const int r = suffix_i ?
snprintf(buf, n, "%.1f %s", sz, suffixes[suffix_i])
: snprintf(buf, n, "%llu %s", b, suffixes[suffix_i]);
if (r >= n || r < 0)
{
fprintf(stderr, "%s: snprintf(3) failed with %d\n", __func__, r);
return -1;
}
return 0;
}
static int prepare_size(struct html_node *const n, const struct stat *const sb)
{
char buf[sizeof MAXSIZEFMT] = "";
if (S_ISREG(sb->st_mode)
&& size_units(sb->st_size, buf, sizeof buf))
{
fprintf(stderr, "%s: size_units failed\n", __func__);
return -1;
}
else if (html_node_set_value(n, buf))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_date(struct html_node *const n, const struct stat *const sb)
{
struct tm tm;
if (!localtime_r(&sb->st_mtime, &tm))
{
fprintf(stderr, "%s: localtime_r(3): %s\n", __func__, strerror(errno));
return -1;
}
char date[sizeof "0000-00-00T00:00:00+0000"];
if (!strftime(date, sizeof date, "%Y-%m-%dT%H:%M:%S%z", &tm))
{
fprintf(stderr, "%s: strftime(3) failed\n", __func__);
return -1;
}
else if (html_node_set_value(n, date))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_share(struct html_node *const n,
const struct stat *const sb, const char *const dir, const char *const name)
{
int ret = -1;
const char *const fdir = dir + strlen("/user");
struct html_node *form, *file, *submit;
struct dynstr d;
dynstr_init(&d);
if (!S_ISREG(sb->st_mode))
return 0;
if (!(form = html_node_add_child(n, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
goto end;
}
else if (!(file = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child file failed\n", __func__);
goto end;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child file failed\n", __func__);
goto end;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
goto end;
}
else if (html_node_add_attr(form, "action", "/share"))
{
fprintf(stderr, "%s: html_node_add_attr action failed\n", __func__);
goto end;
}
else if (html_node_add_attr(file, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr file type failed\n", __func__);
goto end;
}
else if (html_node_add_attr(file, "name", "name"))
{
fprintf(stderr, "%s: html_node_add_attr file name failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "%s%s", fdir, name))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_node_add_attr(file, "value", d.str))
{
fprintf(stderr, "%s: html_node_add_attr file value failed\n", __func__);
goto end;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit type failed\n",
__func__);
goto end;
}
else if (html_node_add_attr(submit, "value", "Share"))
{
fprintf(stderr, "%s: html_node_add_attr submit value failed\n",
__func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
static int prepare_download(struct html_node *const n,
const struct stat *const sb, const char *const dir, const char *const name)
{
int ret = -1;
char *encurl = NULL;
struct html_node *a;
struct dynstr d;
dynstr_init(&d);
if (!S_ISREG(sb->st_mode) && !S_ISDIR(sb->st_mode))
return 0;
else if (!(a = html_node_add_child(n, "a")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "%s%s", dir, name))
{
fprintf(stderr, "%s: dynstr_append d failed\n", __func__);
goto end;
}
else if (!(encurl = http_encode_url(d.str)))
{
fprintf(stderr, "%s: http_encode_url failed\n", __func__);
goto end;
}
else if (S_ISDIR(sb->st_mode))
{
dynstr_free(&d);
if (dynstr_append(&d, "%s/?download=1", encurl))
{
fprintf(stderr, "%s: dynstr_append encurl dir failed\n", __func__);
goto end;
}
}
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, "Download"))
{
fprintf(stderr, "%s: html_node_set_value value failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
free(encurl);
return ret;
}
static int add_element(struct html_node *const n,
const struct page_resource *const pr, const char *const name,
const bool chbx, struct element_stats *const st)
{
int ret = -1;
struct html_node *tr, *td[COLUMNS];
struct dynstr path;
const char *const sep = pr->res[strlen(pr->res) - 1] != '/' ? "/" : "";
dynstr_init(&path);
if (dynstr_append(&path, "%s%s%s", pr->res, sep, name))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (!(tr = html_node_add_child(n, "tr")))
{
fprintf(stderr, "%s: html_node_add_child tr failed\n", __func__);
goto end;
}
for (size_t i = 0; i < sizeof td / sizeof *td; i++)
if (!(td[i] = html_node_add_child(tr, "td")))
{
fprintf(stderr, "%s: html_node_add_child td[%zu] failed\n",
__func__, i);
goto end;
}
struct stat sb;
const bool parentdir = !strcmp(name, "..");
if (stat(path.str, &sb))
{
fprintf(stderr, "%s: stat(2) %s: %s\n",
__func__, path.str, strerror(errno));
goto end;
}
else if (chbx && !parentdir
&& prepare_rm_checkbox(td[RM_CHECKBOX], &sb, name))
{
fprintf(stderr, "%s: prepare_rm_checkbox failed\n", __func__);
goto end;
}
else if (prepare_thumbnail(td[THUMBNAIL], &sb, pr, name, sep))
{
fprintf(stderr, "%s: prepare_thumbnail failed\n", __func__);
goto end;
}
else if (prepare_name(td[NAME], &sb, pr->dir, name))
{
fprintf(stderr, "%s: prepare_name failed\n", __func__);
goto end;
}
else if (prepare_size(td[SIZE], &sb))
{
fprintf(stderr, "%s: prepare_size failed\n", __func__);
goto end;
}
else if (prepare_date(td[DATE], &sb))
{
fprintf(stderr, "%s: prepare_date failed\n", __func__);
goto end;
}
else if (prepare_share(td[SHARE], &sb, pr->dir, name))
{
fprintf(stderr, "%s: prepare_share failed\n", __func__);
goto end;
}
else if (prepare_download(td[DOWNLOAD], &sb, pr->dir, name))
{
fprintf(stderr, "%s: prepare_download failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&path);
return ret;
}
static int prepare_search_form(struct html_node *const n, const char *const dir)
{
struct html_node *div, *form, *hidden, *submit, *input;
if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
return -1;
}
else if (!(input = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child input failed\n", __func__);
return -1;
}
else if (!(hidden = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child hidden failed\n", __func__);
return -1;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "action", "/search"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr hidden failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "name", "dir"))
{
fprintf(stderr, "%s: html_node_add_attr dir failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "value", dir))
{
fprintf(stderr, "%s: html_node_add_attr hidden value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(submit, "value", "Search"))
{
fprintf(stderr, "%s: html_node_add_attr submit value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(input, "type", "text"))
{
fprintf(stderr, "%s: html_node_add_attr text failed\n", __func__);
return -1;
}
else if (html_node_add_attr(input, "name", "name"))
{
fprintf(stderr, "%s: html_node_add_attr name failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_upload_form(struct html_node *const n, const char *const dir)
{
struct html_node *div, *hidden, *form, *submit, *input;
if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
return -1;
}
else if (!(hidden = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child hidden failed\n", __func__);
return -1;
}
else if (!(input = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child input failed\n", __func__);
return -1;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr div failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "action", "/upload"))
{
fprintf(stderr, "%s: html_node_add_attr action failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "enctype", "multipart/form-data"))
{
fprintf(stderr, "%s: html_node_add_attr enctype failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr hidden failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "name", "dir"))
{
fprintf(stderr, "%s: html_node_add_attr dir failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "value", dir))
{
fprintf(stderr, "%s: html_node_add_attr hidden value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(submit, "value", "Upload file"))
{
fprintf(stderr, "%s: html_node_add_attr value failed\n", __func__);
return -1;
}
else if (html_node_add_attr(input, "type", "file"))
{
fprintf(stderr, "%s: html_node_add_attr file failed\n", __func__);
return -1;
}
else if (html_node_add_attr(input, "name", "file"))
{
fprintf(stderr, "%s: html_node_add_attr name failed\n", __func__);
return -1;
}
else if (html_node_add_attr(input, "multiple", NULL))
{
fprintf(stderr, "%s: html_node_add_attr multiple failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_mkdir_form(struct html_node *const n, const char *const dir)
{
struct html_node *div, *form, *hidden, *submit, *input;
if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
return -1;
}
else if (!(input = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child input failed\n", __func__);
return -1;
}
else if (!(hidden = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child hidden failed\n", __func__);
return -1;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr div failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "action", "/mkdir"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr hidden failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "name", "dir"))
{
fprintf(stderr, "%s: html_node_add_attr dir failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "value", dir))
{
fprintf(stderr, "%s: html_node_add_attr hidden value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(submit, "value", "Create directory"))
{
fprintf(stderr, "%s: html_node_add_attr submit value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(input, "type", "text"))
{
fprintf(stderr, "%s: html_node_add_attr text failed\n", __func__);
return -1;
}
else if (html_node_add_attr(input, "name", "name"))
{
fprintf(stderr, "%s: html_node_add_attr name failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_rm_form(struct html_node *const n, const char *const dir)
{
struct html_node *div, *form, *hidden, *submit;
if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
return -1;
}
else if (!(hidden = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child hidden failed\n", __func__);
return -1;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr div failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "id", RM_FORM_ID))
{
fprintf(stderr, "%s: html_node_add_attr id failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "action", "/confirm/rm"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr hidden failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "name", "dir"))
{
fprintf(stderr, "%s: html_node_add_attr name failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "value", dir))
{
fprintf(stderr, "%s: html_node_add_attr value failed\n", __func__);
return -1;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(submit, "value", "Remove selected files"))
{
fprintf(stderr, "%s: html_node_add_attr submit value failed\n",
__func__);
return -1;
}
return 0;
}
static int prepare_quota_form(struct html_node *const n,
const struct page_quota *const q)
{
int ret = -1;
struct html_node *progress = NULL, *div, *label;
char cur[sizeof MAXSIZEFMT], max[sizeof cur],
cur_nu[sizeof "18446744073709551615"], max_nu[sizeof cur_nu];
int res = snprintf(cur_nu, sizeof cur_nu, "%llu", q->cur);
struct dynstr d, pd;
dynstr_init(&d);
dynstr_init(&pd);
if (res < 0 || res >= sizeof cur_nu)
{
fprintf(stderr, "%s: snprintf(3) cur_nu failed with %d\n",
__func__, res);
goto end;
}
res = snprintf(max_nu, sizeof max_nu, "%llu", q->max);
if (res < 0 || res >= sizeof max_nu)
{
fprintf(stderr, "%s: snprintf(3) max_nu failed with %d\n",
__func__, res);
goto end;
}
else if (size_units(q->cur, cur, sizeof cur))
{
fprintf(stderr, "%s: size_units cur failed\n", __func__);
goto end;
}
else if (size_units(q->max, max, sizeof max))
{
fprintf(stderr, "%s: size_units max failed\n", __func__);
goto end;
}
else if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
goto end;
}
else if (!(label = html_node_add_child(div, "label")))
{
fprintf(stderr, "%s: html_node_add_child label failed\n", __func__);
goto end;
}
else if (!(progress = html_node_alloc("progress")))
{
fprintf(stderr, "%s: html_node_alloc progress failed\n", __func__);
goto end;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr div failed\n", __func__);
return -1;
}
else if (html_node_add_attr(progress, "value", cur_nu))
{
fprintf(stderr, "%s: html_node_add_attr value failed\n", __func__);
goto end;
}
else if (html_node_add_attr(progress, "max", max_nu))
{
fprintf(stderr, "%s: html_node_add_attr max failed\n", __func__);
goto end;
}
else if (dynstr_append(&pd, "%s/%s", cur, max))
{
fprintf(stderr, "%s: dynstr_append pd failed\n", __func__);
goto end;
}
else if (html_node_set_value(progress, pd.str))
{
fprintf(stderr, "%s: html_node_set_value progress failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "User quota: "))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_serialize(progress, &d))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "%s", pd.str))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_node_set_value_unescaped(label, d.str))
{
fprintf(stderr, "%s: html_node_set_value_unescaped label failed\n",
__func__);
goto end;
}
ret = 0;
end:
html_node_free(progress);
dynstr_free(&d);
dynstr_free(&pd);
return ret;
}
static int prepare_logout_form(struct html_node *const n,
const char *const username)
{
int ret = -1;
struct dynstr d;
struct html_node *div, *label, *form, *input;
dynstr_init(&d);
if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
goto end;
}
else if (!(label = html_node_add_child(div, "label")))
{
fprintf(stderr, "%s: html_node_add_child label failed\n", __func__);
goto end;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
goto end;
}
else if (!(input = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child input failed\n", __func__);
goto end;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr div 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(label, d.str))
{
fprintf(stderr, "%s: html_node_add_attr div failed\n", __func__);
goto end;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
goto end;
}
else if (html_node_add_attr(form, "action", "/logout"))
{
fprintf(stderr, "%s: html_node_add_attr action failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr type failed\n", __func__);
goto end;
}
else if (html_node_add_attr(input, "value", "Logout"))
{
fprintf(stderr, "%s: html_node_add_attr value failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
static int prepare_footer(struct html_node *const n)
{
int ret = -1;
struct html_node *footer, *const a = html_node_alloc("a");
struct dynstr d;
dynstr_init(&d);
if (!a)
{
fprintf(stderr, "%s: html_node_alloc failed\n", __func__);
goto end;
}
else if (!(footer = html_node_add_child(n, "footer")))
{
fprintf(stderr, "%s: html_node_add_child footer 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(footer, 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 common_head(struct html_node *const head, const char *const tl)
{
int ret = -1;
struct html_node *charset, *title, *viewport, *link;
struct dynstr t;
dynstr_init(&t);
if (!(title = html_node_add_child(head, "title")))
{
fprintf(stderr, "%s: html_node_add_child title failed\n", __func__);
goto end;
}
else if (!(charset = html_node_add_child(head, "meta")))
{
fprintf(stderr, "%s: html_node_add_child charset failed\n", __func__);
goto end;
}
else if (!(link = html_node_add_child(head, "link")))
{
fprintf(stderr, "%s: html_node_add_child link failed\n", __func__);
goto end;
}
else if (html_node_add_attr(link, "href", "/style.css"))
{
fprintf(stderr, "%s: html_node_add_attr href failed\n", __func__);
goto end;
}
else if (html_node_add_attr(link, "rel", "stylesheet"))
{
fprintf(stderr, "%s: html_node_add_attr rel failed\n", __func__);
goto end;
}
else if (html_node_add_attr(charset, "charset", "UTF-8"))
{
fprintf(stderr, "%s: html_node_add_attr charset failed\n", __func__);
goto end;
}
else if (tl && dynstr_append(&t, PROJECT_NAME " - %s", tl))
{
fprintf(stderr, "%s: dynstr_append title failed\n", __func__);
goto end;
}
const char *const value = tl ? t.str : PROJECT_TITLE;
if (html_node_set_value(title, value))
{
fprintf(stderr, "%s: html_node_set_value title failed\n", __func__);
goto end;
}
else if (!(viewport = html_node_add_child(head, "meta")))
{
fprintf(stderr, "%s: html_node_add_child viewport failed\n", __func__);
goto end;
}
else if (html_node_add_attr(viewport, "name", "viewport"))
{
fprintf(stderr, "%s: html_node_add_attr name viewport failed\n",
__func__);
goto end;
}
else if (html_node_add_attr(viewport, "content",
"width=device-width, initial-scale=1, maximum-scale=1"))
{
fprintf(stderr, "%s: html_node_add_attr name viewport failed\n",
__func__);
goto end;
}
ret = 0;
end:
dynstr_free(&t);
return ret;
}
static struct html_node *resource_layout(const char *const dir,
const struct page_quota *const q, struct html_node **const body,
struct html_node **const table, const char *const username)
{
const char *const fdir = dir + strlen("/user");
struct html_node *const html = html_node_alloc("html"),
*ret = NULL, *head, *div;
if (!html)
{
fprintf(stderr, "%s: html_node_alloc_failed\n", __func__);
goto end;
}
else if (!(head = html_node_add_child(html, "head")))
{
fprintf(stderr, "%s: html_node_add_child head failed\n", __func__);
goto end;
}
else if (!(*body = html_node_add_child(html, "body")))
{
fprintf(stderr, "%s: html_node_add_child body failed\n", __func__);
goto end;
}
else if (!(div = html_node_add_child(*body, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
goto end;
}
else if (!(*table = html_node_add_child(div, "table")))
{
fprintf(stderr, "%s: html_node_add_child table failed\n", __func__);
goto end;
}
else if (common_head(head, fdir))
{
fprintf(stderr, "%s: common_head failed\n", __func__);
goto end;
}
else if (prepare_search_form(*body, fdir))
{
fprintf(stderr, "%s: prepare_search_form failed\n", __func__);
goto end;
}
else if (prepare_upload_form(*body, fdir))
{
fprintf(stderr, "%s: prepare_upload_form failed\n", __func__);
goto end;
}
else if (prepare_mkdir_form(*body, fdir))
{
fprintf(stderr, "%s: prepare_upload_form failed\n", __func__);
goto end;
}
else if (prepare_rm_form(*body, fdir))
{
fprintf(stderr, "%s: prepare_upload_form failed\n", __func__);
goto end;
}
else if (q && prepare_quota_form(*body, q))
{
fprintf(stderr, "%s: prepare_quota_form failed\n", __func__);
goto end;
}
else if (prepare_logout_form(*body, username))
{
fprintf(stderr, "%s: prepare_logout_form failed\n", __func__);
goto end;
}
ret = html;
end:
if (!ret)
html_node_free(html);
return ret;
}
static int get_page(const struct page_resource *const pr, size_t *const page)
{
*page = 0;
for (size_t i = 0; i < pr->n_args; i++)
{
const struct http_arg *const a = &pr->args[i];
if (!strcmp(a->key, "page"))
{
errno = 0;
char *end;
const unsigned long long value = strtoull(a->value, &end, 10);
if (errno)
{
fprintf(stderr, "%s: strtoull(3): %s\n",
__func__, strerror(errno));
return 1;
}
else if (*end)
{
fprintf(stderr, "%s: invalid value for page argument: %s\n",
__func__, a->value);
return 1;
}
else if (value > SIZE_MAX)
{
fprintf(stderr, "%s: page value (%llu) exceeds maximum value "
"(%ju)\n", __func__, value, (uintmax_t)SIZE_MAX);
return 1;
}
*page = value;
break;
}
}
return 0;
}
static int get_file_dir(const struct page_resource *const pr,
const char *const name, struct element_stats *const st)
{
int ret = -1;
const char *const sep = pr->res[strlen(pr->res) - 1] != '/' ? "/" : "";
struct dynstr path;
struct stat sb;
dynstr_init(&path);
if (!strcmp(name, ".."))
{
ret = 0;
goto end;
}
else if (dynstr_append(&path, "%s%s%s", pr->res, sep, name))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (stat(path.str, &sb))
{
fprintf(stderr, "%s: stat(2) %s: %s\n", __func__, path.str,
strerror(errno));
goto end;
}
else if (S_ISDIR(sb.st_mode))
st->n_dirs++;
else if (S_ISREG(sb.st_mode))
st->n_files++;
ret = 0;
end:
dynstr_free(&path);
return ret;
}
static int get_files_dirs(const struct page_resource *const pr,
struct element_stats *const st, const struct dirent *const *const pde,
const size_t n)
{
for (size_t i = 0; i < n; i++)
{
const struct dirent *const de = pde[i];
const char *const name = de->d_name;
if (!strcmp(name, ".")
|| (!strcmp(name, "..") && !strcmp(pr->root, pr->res)))
continue;
else if (get_file_dir(pr, name, st))
{
fprintf(stderr, "%s: get_file_dir failed\n", __func__);
return -1;
}
}
return 0;
}
static int get_page_stats(const struct page_resource *const pr,
struct element_stats *const st, const struct dirent *const *const pde,
const size_t n, size_t *const start, size_t *const end)
{
/* TODO: allow user to define limit. */
static const size_t limit = 100;
size_t page;
const int ret = get_page(pr, &page);
if (ret)
{
fprintf(stderr, "%s: get_page failed\n", __func__);
return ret;
}
const size_t n_pages = n / limit;
if (page > n_pages)
{
fprintf(stderr, "%s: invalid page %zu (max %zu)\n", __func__, page,
n_pages);
return 1;
}
else if (page > (size_t)SIZE_MAX / limit)
{
fprintf(stderr, "%s: page overflow detected: %zu, limit: %zu\n",
__func__, page, limit);
return 1;
}
else if (get_files_dirs(pr, st, pde, n))
{
fprintf(stderr, "%s: get_files_dirs failed\n", __func__);
return -1;
}
const size_t tmpend = limit * (page + 1);
*start = limit * page;
*end = tmpend > n ? n : tmpend;
st->cur_page = page;
st->n_pages = n_pages;
return 0;
}
static int add_thead(struct html_node *const table)
{
static const char *const h[COLUMNS] =
{
[RM_CHECKBOX] = "Remove",
[THUMBNAIL] = "Thumbnail",
[NAME] = "Name",
[SIZE] = "Size",
[DATE] = "Date",
[SHARE] = "Share",
[DOWNLOAD] = "Download"
};
struct html_node *thead, *tr;
if (!(thead = html_node_add_child(table, "thead"))
|| !(tr = html_node_add_child(thead, "tr")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
return -1;
}
for (size_t i = 0; i < sizeof h / sizeof *h; i++)
{
struct html_node *const td = html_node_add_child(tr, "td");
if (!td)
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
return -1;
}
else if (html_node_set_value(td, h[i]))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
return -1;
}
}
return 0;
}
static int add_elements(const struct page_resource *const pr,
struct html_node *const table, struct element_stats *const st)
{
int ret = -1;
struct dirent **pde = NULL;
struct html_node *tbody;
const int n = scandir(pr->res, &pde, NULL, alphasort);
if (n < 0)
{
fprintf(stderr, "%s: scandir(3): %s\n", __func__, strerror(errno));
goto end;
}
*st = (const struct element_stats){0};
size_t start, end;
const struct dirent *const *const cpde = (const struct dirent *const *)pde;
if ((ret = get_page_stats(pr, st, cpde, n, &start, &end)))
{
fprintf(stderr, "%s: get_page_stats failed\n", __func__);
goto end;
}
else if (!(tbody = html_node_add_child(table, "tbody")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (add_thead(table))
{
fprintf(stderr, "%s: add_thead failed\n", __func__);
goto end;
}
for (size_t i = start; i < end; i++)
{
const struct dirent *const de = pde[i];
const char *const name = de->d_name;
if (!strcmp(name, ".")
|| (!strcmp(name, "..") && !strcmp(pr->root, pr->res)))
continue;
else if (add_element(tbody, pr, name, true, st))
{
fprintf(stderr, "%s: add_element failed\n", __func__);
goto end;
}
}
ret = 0;
end:
for (int i = 0; i < n; i++)
free(pde[i]);
free(pde);
return ret;
}
static int add_page(const struct page_resource *const pr,
const size_t cur_page, struct html_node *const n, const size_t page)
{
int ret = -1;
struct html_node *child;
struct dynstr d;
dynstr_init(&d);
if (page != cur_page)
{
if (!(child = html_node_add_child(n, "a")))
{
fprintf(stderr, "%s: html_node_add_child a failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "%s?page=%zu", pr->dir, page))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_node_add_attr(child, "href", d.str))
{
fprintf(stderr, "%s: html_node_add_attr failed\n", __func__);
goto end;
}
}
else if (!(child = html_node_add_child(n, "p")))
{
fprintf(stderr, "%s: html_node_add_child p failed\n", __func__);
goto end;
}
char buf[sizeof "18446744073709551615"];
const int res = snprintf(buf, sizeof buf, "%zu", page);
if (res < 0 || res >= sizeof buf)
{
fprintf(stderr, "%s: snprintf(3) failed with %d\n", __func__, res);
goto end;
}
else if (html_node_add_attr(child, "class", "page"))
{
fprintf(stderr, "%s: html_node_add_attr failed\n", __func__);
goto end;
}
else if (html_node_set_value(child, buf))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
static int add_pages(const struct page_resource *const pr,
struct html_node *const n, const struct element_stats *const st)
{
struct html_node *const div = html_node_add_child(n, "div"), *label;
const size_t cur = st->cur_page;
if (!div || !(label = html_node_add_child(div, "label")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "pages")
|| html_node_add_attr(label, "style", "display: flex;"))
{
fprintf(stderr, "%s: html_node_add_attr failed\n", __func__);
return -1;
}
else if (cur && add_page(pr, cur, label, 0))
{
fprintf(stderr, "%s: add_page first failed\n", __func__);
return -1;
}
static const size_t limit = 10;
const size_t min = cur > limit ? cur - limit : 1;
for (size_t i = min; i < cur; i++)
if (add_page(pr, cur, label, i))
{
fprintf(stderr, "%s: add_page %zu failed\n", __func__, i);
return -1;
}
if (add_page(pr, cur, label, cur))
{
fprintf(stderr, "%s: add_page cur failed\n", __func__);
return -1;
}
for (size_t i = cur + 1, j = 0; i < st->n_pages && j < limit; i++, j++)
if (add_page(pr, cur, label, i))
{
fprintf(stderr, "%s: add_page %zu failed\n", __func__, i);
return -1;
}
if (cur < st->n_pages && add_page(pr, cur, label, st->n_pages))
{
fprintf(stderr, "%s: add_page last failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_element_stats(const struct page_resource *const pr,
struct html_node *const n, const struct element_stats *const st)
{
int ret = -1;
struct html_node *const div = html_node_add_child(n, "div"), *label;
struct dynstr d;
dynstr_init(&d);
if (!div || !(label = html_node_add_child(div, "label")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "%llu directories, %llu files",
st->n_dirs, st->n_files))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_node_set_value(label, d.str))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
goto end;
}
else if (st->n_pages && add_pages(pr, n, st))
{
fprintf(stderr, "%s: add_pages failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
static int list_dir(const struct page_resource *const pr)
{
int ret = -1;
struct dynstr out;
struct html_node *table, *body,
*const html = resource_layout(pr->dir, pr->q, &body, &table,
pr->username);
struct element_stats st;
dynstr_init(&out);
if (!html)
{
fprintf(stderr, "%s: resource_layout failed\n", __func__);
goto end;
}
else if ((ret = add_elements(pr, table, &st)))
{
fprintf(stderr, "%s: read_elements failed\n", __func__);
goto end;
}
else if (prepare_element_stats(pr, body, &st))
{
fprintf(stderr, "%s: prepare_element_stats failed\n", __func__);
goto end;
}
else if (prepare_footer(body))
{
fprintf(stderr, "%s: prepare_footer failed\n", __func__);
goto end;
}
else if (dynstr_append(&out, DOCTYPE_TAG))
{
fprintf(stderr, "%s: dynstr_prepend failed\n", __func__);
goto end;
}
else if (html_serialize(html, &out))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
*pr->r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.buf.rw = out.str,
.n = out.len,
.free = free
};
if (http_response_add_header(pr->r, "Content-Type", "text/html"))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
html_node_free(html);
if (ret)
dynstr_free(&out);
return ret;
}
static int serve_file(struct http_response *const r,
const struct stat *const sb, const char *const res, const bool preview,
const int fd, bool *const fdopened)
{
int ret = -1;
FILE *f = NULL;
struct dynstr b, d;
char *bn;
dynstr_init(&b);
dynstr_init(&d);
if (preview)
{
if (dynstr_append(&d, "inline"))
{
fprintf(stderr, "%s: dynstr_append inline failed\n", __func__);
goto end;
}
}
else if (dynstr_append(&b, "%s", res))
{
fprintf(stderr, "%s: dynstr_append res failed\n", __func__);
goto end;
}
else if (!(bn = basename(b.str)))
{
fprintf(stderr, "%s: basename(3) failed\n", __func__);
goto end;
}
else if (dynstr_append(&d, "attachment; filename=\"%s\"", bn))
{
fprintf(stderr, "%s: dynstr_append attachment failed\n", __func__);
goto end;
}
if (!(f = fdopen(fd, "rb")))
{
fprintf(stderr, "%s: fdopen(3): %s\n", __func__, strerror(errno));
goto end;
}
*fdopened = true;
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.f = f,
.n = sb->st_size
};
if (http_response_add_header(r, "Content-Disposition", d.str))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
dynstr_free(&b);
dynstr_free(&d);
if (ret && f && fclose(f))
fprintf(stderr, "%s: fclose(3): %s\n", __func__, strerror(errno));
return ret;
}
int page_not_found(struct http_response *const r)
{
static const char body[] =
DOCTYPE_TAG
"<html>\n"
" <head>"
" " PROJECT_TAG "\n"
" </head>"
"File or directory not found\n"
"</html>";
*r = (const struct http_response)
{
.status = HTTP_STATUS_NOT_FOUND,
.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;
}
static bool preview(const struct page_resource *const pr)
{
for (size_t i = 0; i < pr->n_args; i++)
{
const struct http_arg *const a = &pr->args[i];
if (!strcmp(a->key, "preview")
&& (!strcmp(a->value, "1")
|| !strcasecmp(a->value, "true")))
return true;
}
return false;
}
static bool download(const struct page_resource *const pr)
{
for (size_t i = 0; i < pr->n_args; i++)
{
const struct http_arg *const a = &pr->args[i];
if (!strcmp(a->key, "download")
&& (!strcmp(a->value, "1")
|| !strcasecmp(a->value, "true")))
return true;
}
return false;
}
int page_resource(const struct page_resource *const pr)
{
int ret = -1;
struct stat sb;
const int fd = open(pr->res, O_RDONLY);
bool fdopened = false;
if (fd < 0)
{
if (errno == ENOENT || errno == ENOTDIR)
ret = page_not_found(pr->r);
else
fprintf(stderr, "%s: open(2) %s: %s\n",
__func__, pr->res, strerror(errno));
goto end;
}
else if (fstat(fd, &sb))
{
fprintf(stderr, "%s: fstat(2) %s: %s\n",
__func__, pr->res, strerror(errno));
goto end;
}
const mode_t m = sb.st_mode;
if (S_ISDIR(m))
{
if (download(pr))
{
if ((ret = zip(pr->res, pr->r)))
{
fprintf(stderr, "%s: zip_dir failed\n", __func__);
goto end;
}
}
else if ((ret = list_dir(pr)))
{
if (ret < 0)
{
fprintf(stderr, "%s: list_dir failed\n", __func__);
goto end;
}
else if ((ret = page_bad_request(pr->r)))
{
fprintf(stderr, "%s: page_bad_request failed\n", __func__);
goto end;
}
}
}
else if (S_ISREG(m))
{
if (serve_file(pr->r, &sb, pr->res, preview(pr), fd, &fdopened))
{
fprintf(stderr, "%s: serve_file failed\n", __func__);
goto end;
}
}
else
{
fprintf(stderr, "%s: unexpected st_mode %jo\n", __func__, (intmax_t)m);
goto end;
}
ret = 0;
end:
if (!fdopened && fd >= 0 && close(fd))
{
fprintf(stderr, "%s: close(2) %s: %s\n",
__func__, pr->res, strerror(errno));
ret = -1;
}
return ret;
}
static char *resolve_link(const char *const res)
{
size_t len = 1;
char *p = NULL;
for (;;)
{
char *const pp = realloc(p, len);
if (!pp)
{
fprintf(stderr, "%s: realloc(3): %s\n", __func__, strerror(errno));
break;
}
p = pp;
const ssize_t n = readlink(res, p, len);
if (n < 0)
{
fprintf(stderr, "%s: readlink(2): %s\n", __func__, strerror(errno));
break;
}
else if (n < len)
{
p[len - 1] = '\0';
return p;
}
len++;
}
free(p);
return NULL;
}
int page_public(struct http_response *const r, const char *const res)
{
int ret = -1;
const int fd = open(res, O_RDONLY);
struct stat sb;
char *path = NULL;
bool fdopened = false;
if (fd < 0)
{
if (errno == ENOENT)
ret = page_not_found(r);
else
fprintf(stderr, "%s: stat(2) %s: %s\n",
__func__, res, strerror(errno));
goto end;
}
else if (fstat(fd, &sb))
{
fprintf(stderr, "%s: fstat(2) %s: %s\n",
__func__, res, strerror(errno));
goto end;
}
const mode_t m = sb.st_mode;
if (!S_ISREG(m))
{
fprintf(stderr, "%s: only regular files are supported\n", __func__);
goto end;
}
else if (!(path = resolve_link(res)))
{
fprintf(stderr, "%s: resolve_link failed\n", __func__);
goto end;
}
else if (serve_file(r, &sb, path, false, fd, &fdopened))
{
fprintf(stderr, "%s: serve_file failed\n", __func__);
goto end;
}
ret = 0;
end:
if (!fdopened && fd >= 0 && close(fd))
{
fprintf(stderr, "%s: close(2) %s: %s\n",
__func__, res, strerror(errno));
ret = -1;
}
free(path);
return ret;
}
int page_failed_login(struct http_response *const r)
{
static const char index[] =
DOCTYPE_TAG
"<html>\n"
" <head>\n"
" " COMMON_HEAD "\n"
" " STYLE_A "\n"
" </head>\n"
" <p>Invalid username or password.</p>\n"
LOGIN_BODY
"</html>\n";
*r = (const struct http_response)
{
.status = HTTP_STATUS_UNAUTHORIZED,
.buf.ro = index,
.n = sizeof index - 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;
}
int page_login(struct http_response *const r)
{
static const char index[] =
DOCTYPE_TAG
"<html>\n"
" <head>\n"
" " STYLE_A "\n"
" " COMMON_HEAD "\n"
" </head>\n"
" " LOGIN_BODY "\n"
"</html>\n";
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.buf.ro = index,
.n = sizeof index - 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;
}
int page_forbidden(struct http_response *const r)
{
static const char body[] =
DOCTYPE_TAG
"<html>\n"
" <head>\n"
" " PROJECT_TAG "\n"
" " COMMON_HEAD "\n"
" </head>\n"
"Forbidden\n"
"</html>";
*r = (const struct http_response)
{
.status = HTTP_STATUS_FORBIDDEN,
.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;
}
int page_bad_request(struct http_response *const r)
{
static const char body[] =
DOCTYPE_TAG
"<html>\n"
" <head>"
" " PROJECT_TAG "\n"
" </head>"
"Invalid request\n"
"</html>";
*r = (const struct http_response)
{
.status = HTTP_STATUS_BAD_REQUEST,
.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;
}
int page_style(struct http_response *const r, const char *const path)
{
FILE *f = NULL;
struct stat sb;
if (stat(path, &sb))
{
fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno));
goto failure;
}
else if (!(f = fopen(path, "rb")))
{
fprintf(stderr, "%s: fopen(3) %s: %s\n",
__func__, path, strerror(errno));
goto failure;
}
*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 failure;
}
return 0;
failure:
if (f && fclose(f))
fprintf(stderr, "%s: fclose(3) %s: %s\n",
__func__, path, strerror(errno));
return -1;
}
int page_share(struct http_response *const r, const char *const path)
{
int ret = -1;
struct dynstr out;
struct html_node *const html = html_node_alloc("html"),
*head, *a;
dynstr_init(&out);
if (!html)
{
fprintf(stderr, "%s: html_node_alloc failed\n", __func__);
goto end;
}
else if (!(head = html_node_add_child(html, "head")))
{
fprintf(stderr, "%s: html_node_add_child head failed\n", __func__);
goto end;
}
else if (common_head(head, NULL))
{
fprintf(stderr, "%s: common_head failed\n", __func__);
goto end;
}
else if (!(a = html_node_add_child(html, "a")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (html_node_add_attr(a, "href", path))
{
fprintf(stderr, "%s: html_node_add_attr href failed\n", __func__);
goto end;
}
else if (html_node_set_value(a, "Copy this link"))
{
fprintf(stderr, "%s: html_node_set_value href failed\n", __func__);
goto end;
}
else if (dynstr_append(&out, DOCTYPE_TAG))
{
fprintf(stderr, "%s: dynstr_prepend failed\n", __func__);
goto end;
}
else if (html_serialize(html, &out))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.buf.rw = out.str,
.n = out.len,
.free = free
};
if (http_response_add_header(r, "Content-Type", "text/html"))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
html_node_free(html);
if (ret)
dynstr_free(&out);
return ret;
}
int page_quota_exceeded(struct http_response *const r,
const unsigned long long len, const unsigned long long quota)
{
int ret = -1;
struct dynstr msg, out;
char q[sizeof MAXSIZEFMT], l[sizeof q];
struct html_node *const html = html_node_alloc("html"),
*head, *body;
dynstr_init(&msg);
dynstr_init(&out);
if (!html)
{
fprintf(stderr, "%s: html_node_alloc failed\n", __func__);
goto end;
}
else if (!(head = html_node_add_child(html, "head")))
{
fprintf(stderr, "%s: html_node_add_child head failed\n", __func__);
goto end;
}
else if (!(body = html_node_add_child(html, "body")))
{
fprintf(stderr, "%s: html_node_add_child body failed\n", __func__);
goto end;
}
else if (common_head(head, NULL))
{
fprintf(stderr, "%s: common_head failed\n", __func__);
goto end;
}
else if (size_units(quota, q, sizeof q))
{
fprintf(stderr, "%s: size_units quota failed\n", __func__);
goto end;
}
else if (size_units(len, l, sizeof l))
{
fprintf(stderr, "%s: size_units len failed\n", __func__);
goto end;
}
else if (dynstr_append(&msg, "Maximum quota exceeded: %s "
"(requested size: %s)", q, l))
{
fprintf(stderr, "%s: dynstr_append msg failed\n", __func__);
goto end;
}
else if (html_node_set_value(body, msg.str))
{
fprintf(stderr, "%s: html_node_set_value msg failed\n", __func__);
goto end;
}
else if (dynstr_append(&out, DOCTYPE_TAG))
{
fprintf(stderr, "%s: dynstr_prepend failed\n", __func__);
goto end;
}
else if (html_serialize(html, &out))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
*r = (const struct http_response)
{
.status = HTTP_STATUS_PAYLOAD_TOO_LARGE,
.buf.rw = out.str,
.n = out.len,
.free = free
};
if (http_response_add_header(r, "Content-Type", "text/html"))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
html_node_free(html);
dynstr_free(&msg);
if (ret)
dynstr_free(&out);
return ret;
}
static int add_search_results(struct html_node *const n,
const struct page_search *const s)
{
struct html_node *table;
if (!(table = html_node_add_child(n, "table")))
{
fprintf(stderr, "%s: html_node_add_child table failed\n", __func__);
return -1;
}
for (size_t i = 0; i < s->n; i++)
{
const struct page_search_result *const r = &s->results[i];
const struct page_resource pr =
{
.dir = "/user/",
.adir = s->adir,
.username = s->username,
.res = s->root
};
if (add_element(table, &pr, r->name, false, NULL))
{
fprintf(stderr, "%s: add_element failed\n", __func__);
return -1;
}
}
return 0;
}
static int prepare_search_limit_exceeded(struct html_node *const n,
const struct page_search *const s)
{
static const char msg[] = "Too many results were found. Please "
"set up a more specific search term in order to provide "
"fewer and more relevant results";
struct html_node *const p = html_node_add_child(n, "p");
if (!p)
{
fprintf(stderr, "%s: html_node_add_child p failed\n", __func__);
return -1;
}
else if (html_node_set_value(p, msg))
{
fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
return -1;
}
return 0;
}
static int prepare_search_result_count(struct html_node *const n,
const struct page_search *const s)
{
int ret = -1;
struct html_node *const div = html_node_add_child(n, "div"), *label;
struct dynstr d;
dynstr_init(&d);
if (!div || !(label = html_node_add_child(div, "label")))
{
fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
goto end;
}
else if (s->limit_exceeded && prepare_search_limit_exceeded(n, s))
{
fprintf(stderr, "%s: prepare_search_limit_exceeded msg failed\n",
__func__);
goto end;
}
else if (!s->n && html_node_set_value(label, "No results found"))
{
fprintf(stderr, "%s: html_node_set_value msg failed\n", __func__);
goto end;
}
else if (s->n)
{
const char *const results = s->n == 1 ? "result" : "results";
if (dynstr_append(&d, "%zu %s found", s->n, results))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
goto end;
}
else if (html_node_set_value(label, d.str))
{
fprintf(stderr, "%s: html_node_set_value p failed\n", __func__);
goto end;
}
}
ret = 0;
end:
dynstr_free(&d);
return ret;
}
int page_search(struct http_response *const r,
const struct page_search *const s)
{
int ret = -1;
struct dynstr out;
struct html_node *const html = html_node_alloc("html"), *head, *body;
dynstr_init(&out);
if (!html)
{
fprintf(stderr, "%s: html_node_alloc failed\n", __func__);
goto end;
}
else if (!(head = html_node_add_child(html, "head")))
{
fprintf(stderr, "%s: html_node_add_child head failed\n", __func__);
goto end;
}
else if (!(body = html_node_add_child(html, "body")))
{
fprintf(stderr, "%s: html_node_add_child body failed\n", __func__);
goto end;
}
else if (common_head(head, NULL))
{
fprintf(stderr, "%s: common_head failed\n", __func__);
goto end;
}
else if (s->n && add_search_results(body, s))
{
fprintf(stderr, "%s: add_search_results failed\n", __func__);
goto end;
}
else if (prepare_search_result_count(body, s))
{
fprintf(stderr, "%s: prepare_limit_exceeded failed\n", __func__);
goto end;
}
else if (prepare_footer(body))
{
fprintf(stderr, "%s: prepare_footer failed\n", __func__);
goto end;
}
else if (dynstr_append(&out, DOCTYPE_TAG))
{
fprintf(stderr, "%s: dynstr_append out failed\n", __func__);
goto end;
}
else if (html_serialize(html, &out))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.buf.rw = out.str,
.n = out.len,
.free = free
};
if (http_response_add_header(r, "Content-Type", "text/html"))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
html_node_free(html);
if (ret)
dynstr_free(&out);
return ret;
}
static int append_rm_items(struct html_node *const n,
const struct page_rm *const rm)
{
struct html_node *div, *form, *table, *hidden, *submit;
if (!(table = html_node_add_child(n, "table")))
{
fprintf(stderr, "%s: html_node_add_child table failed\n", __func__);
return -1;
}
else if (!(div = html_node_add_child(n, "div")))
{
fprintf(stderr, "%s: html_node_add_child div failed\n", __func__);
return -1;
}
else if (!(form = html_node_add_child(div, "form")))
{
fprintf(stderr, "%s: html_node_add_child form failed\n", __func__);
return -1;
}
else if (!(hidden = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child hidden failed\n", __func__);
return -1;
}
else if (!(submit = html_node_add_child(form, "input")))
{
fprintf(stderr, "%s: html_node_add_child submit failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "method", "post"))
{
fprintf(stderr, "%s: html_node_add_attr method failed\n", __func__);
return -1;
}
else if (html_node_add_attr(form, "action", "/rm"))
{
fprintf(stderr, "%s: html_node_add_attr action failed\n", __func__);
return -1;
}
else if (html_node_add_attr(div, "class", "userform"))
{
fprintf(stderr, "%s: html_node_add_attr class failed\n", __func__);
return -1;
}
else if (html_node_add_attr(hidden, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr hidden type failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(hidden, "name", "dir"))
{
fprintf(stderr, "%s: html_node_add_attr hidden name failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(hidden, "value", rm->dir))
{
fprintf(stderr, "%s: html_node_add_attr hidden value failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(submit, "type", "submit"))
{
fprintf(stderr, "%s: html_node_add_attr submit type failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(submit, "value", "Confirm"))
{
fprintf(stderr, "%s: html_node_add_attr submit value failed\n",
__func__);
return -1;
}
for (size_t i = 0; i < rm->n; i++)
{
const char *const item = rm->items[i];
struct html_node *const tr = html_node_add_child(table, "tr"),
*const path = html_node_add_child(form, "input"), *td;
if (!tr)
{
fprintf(stderr, "%s: html_node_add_child tr failed\n", __func__);
return -1;
}
else if (!path)
{
fprintf(stderr, "%s: html_node_add_child path failed\n", __func__);
return -1;
}
else if (!(td = html_node_add_child(tr, "td")))
{
fprintf(stderr, "%s: html_node_add_child td failed\n", __func__);
return -1;
}
else if (html_node_set_value(td, item))
{
fprintf(stderr, "%s: html_node_set_value td failed\n", __func__);
return -1;
}
else if (html_node_add_attr(path, "type", "hidden"))
{
fprintf(stderr, "%s: html_node_add_attr path type failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(path, "name", "path"))
{
fprintf(stderr, "%s: html_node_add_attr path name failed\n",
__func__);
return -1;
}
else if (html_node_add_attr(path, "value", item))
{
fprintf(stderr, "%s: html_node_add_attr path value failed\n",
__func__);
return -1;
}
}
return 0;
}
int page_rm(struct http_response *r, const struct page_rm *const rm)
{
int ret = -1;
struct dynstr out;
struct html_node *const html = html_node_alloc("html"),
*p, *p2, *head, *body;
static const char question[] = "Are you sure to remove the "
"following files and/or directories? Remember that removing a "
"directory will remove all of the files and directories inside it.",
reminder[] = "This action cannot be undone.";
dynstr_init(&out);
if (!html)
{
fprintf(stderr, "%s: html_node_alloc failed\n", __func__);
goto end;
}
else if (!(head = html_node_add_child(html, "head")))
{
fprintf(stderr, "%s: html_node_add_child head failed\n", __func__);
goto end;
}
else if (!(body = html_node_add_child(html, "body")))
{
fprintf(stderr, "%s: html_node_add_child body failed\n", __func__);
goto end;
}
else if (!(p = html_node_add_child(body, "p")))
{
fprintf(stderr, "%s: html_node_add_child p failed\n", __func__);
goto end;
}
else if (!(p2 = html_node_add_child(body, "p")))
{
fprintf(stderr, "%s: html_node_add_child p2 failed\n", __func__);
goto end;
}
else if (common_head(head, NULL))
{
fprintf(stderr, "%s: common_head failed\n", __func__);
goto end;
}
else if (html_node_set_value(p, question))
{
fprintf(stderr, "%s: html_node_set_value question failed\n", __func__);
goto end;
}
else if (html_node_set_value(p2, reminder))
{
fprintf(stderr, "%s: html_node_set_value reminder failed\n", __func__);
goto end;
}
else if (append_rm_items(body, rm))
{
fprintf(stderr, "%s: append_rm_items failed\n", __func__);
goto end;
}
else if (prepare_footer(body))
{
fprintf(stderr, "%s: prepare_footer failed\n", __func__);
goto end;
}
else if (dynstr_append(&out, DOCTYPE_TAG))
{
fprintf(stderr, "%s: dynstr_append out failed\n", __func__);
goto end;
}
else if (html_serialize(html, &out))
{
fprintf(stderr, "%s: html_serialize failed\n", __func__);
goto end;
}
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.buf.rw = out.str,
.n = out.len,
.free = free
};
if (http_response_add_header(r, "Content-Type", "text/html"))
{
fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
goto end;
}
ret = 0;
end:
html_node_free(html);
if (ret)
dynstr_free(&out);
return ret;
}
int page_head_resource(struct http_response *const r, const char *const res)
{
struct stat sb;
if (stat(res, &sb))
{
if (errno == ENOENT || errno == ENOTDIR)
return page_not_found(r);
else
{
fprintf(stderr, "%s: stat(2) %s: %s\n",
__func__, res, strerror(errno));
return -1;
}
}
const mode_t m = sb.st_mode;
if (!S_ISDIR(m) && !S_ISREG(m))
{
fprintf(stderr, "%s: unexpected st_mode %jd\n", __func__, (intmax_t)m);
return -1;
}
*r = (const struct http_response)
{
.status = HTTP_STATUS_OK,
.n = sb.st_size
};
return 0;
}
int page_thumbnail(struct http_response *const r, const char *const res)
{
int ret = -1;
const int fd = open(res, O_RDONLY);
bool fdopened = false;
struct stat sb;
if (fd < 0)
{
if (errno == ENOENT)
ret = page_not_found(r);
else
fprintf(stderr, "%s: open(2) %s: %s\n",
__func__, res, strerror(errno));
goto end;
}
else if (fstat(fd, &sb))
{
fprintf(stderr, "%s: fstat(2) %s: %s\n",
__func__, res, strerror(errno));
goto end;
}
const mode_t m = sb.st_mode;
if (!S_ISREG(m))
{
fprintf(stderr, "%s: only regular files are supported\n", __func__);
ret = 1;
goto end;
}
else if (serve_file(r, &sb, res, true, fd, &fdopened))
{
fprintf(stderr, "%s: serve_file failed\n", __func__);
goto end;
}
ret = 0;
end:
if (!fdopened && fd >= 0 && close(fd))
{
fprintf(stderr, "%s: close(2) %s: %s\n",
__func__, res, strerror(errno));
ret = -1;
}
return ret;
}
|
