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* Move decode_hex into its own fileXavier Del Campo Romero2023-03-095-22/+67
| | | | | | | - Error detection against strotul(3) has been improved, as done in other places. - New function encode_hex has been implemented, which will be used by future commits.
* http.c: Minor formatting changeXavier Del Campo Romero2023-03-081-2/+1
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* page.c: Set common <head> parametersXavier Del Campo Romero2023-03-081-3/+7
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* main.c: Always append trailing slash to directoriesXavier Del Campo Romero2023-03-081-38/+8
| | | | | | Otherwise, slcl would fail to generate the URLs for the elements inside a directory, because of how cust_dirname worked, which also turned out to be redundant.
* Call page_forbidden on invalid authXavier Del Campo Romero2023-03-081-18/+1
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* Remove(3) f->tmpname from ctx_freeXavier Del Campo Romero2023-03-082-10/+10
| | | | | | Until now, f->tmpname was removed by move_file when the move operation succeeded. However, since a HTTP operation can fail before move_file is called, the temporary file must also be removed.
* Update dynstrXavier Del Campo Romero2023-03-081-0/+0
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* server.c: Fix wrong size for memcpy(3)Xavier Del Campo Romero2023-03-081-4/+5
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* main.c: Avoid leaking formsXavier Del Campo Romero2023-03-081-27/+39
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* main.c: Print error message only on errno != EEXISTXavier Del Campo Romero2023-03-081-2/+3
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* page.c: Show units for user quotaXavier Del Campo Romero2023-03-081-22/+52
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* page.c: Sort elements alphabeticallyXavier Del Campo Romero2023-03-081-26/+64
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* html.c: Allow empty strings on html_encodeXavier Del Campo Romero2023-03-081-0/+6
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* server.c: Minor const-correctness improvementXavier Del Campo Romero2023-03-071-1/+1
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* main.c: Replace + with whitespace for directoriesXavier Del Campo Romero2023-03-071-3/+5
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* main.c: Fix memory leak if append_form failsXavier Del Campo Romero2023-03-071-1/+7
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* main.c: Simplify code a bitXavier Del Campo Romero2023-03-071-8/+3
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* cftw.c: Add missing call to closedir(2)Xavier Del Campo Romero2023-03-071-4/+14
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* Perform some minor optimizationsXavier Del Campo Romero2023-03-062-2/+2
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* Implement user quotaXavier Del Campo Romero2023-03-0614-35/+393
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This feature allows admins to set a specific quota for each user, in MiB. This feature is particularly useful for shared instances, where unlimited user storage might be unfeasible or even dangerous for the server. Also, a nice HTML5 <progress> element has been added to the site that shows how much of the quota has been consumed. If no quota is set, slcl falls back to the default behaviour i.e., assume unlimited storage. Limitations: - While HTTP does specify a Content-Length, which determines the length of the whole request, it does not specify how many files are involved or their individual sizes. - Because of this, if multiple files are uploaded simultaneously, the whole request would be dropped if user quota is exceeded, even if not all files exceeded it. - Also, Content-Length adds the length of some HTTP boilerplate (e.g.: boundaries), but slcl must rely on this before accepting the whole request. In other words, this means some requests might be rejected by slcl because of the extra bytes caused by such boilerplate. - When the quota is exceeded, slcl must close the connection so that the rest of the transfer is cancelled. Unfortunately, this means no HTML can be sent back to the customer to inform about the situation.
* Add cftwXavier Del Campo Romero2023-03-064-0/+74
| | | | | | | | | | | POSIX functions ftw(3) and nftw(3) do not allow passing an opaque pointer to the callback they call, so it forces the use of statically allocated data. ctfw (from "custom ftw") is a custom implementation that solves this, while also removing unneeded stuff. This function will be used by future commits.
* README.md: Fix broken link to usergenXavier Del Campo Romero2023-03-061-4/+4
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* Perform some minor optimizationsXavier Del Campo Romero2023-03-063-10/+3
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* main.c: Simplify failed login responseXavier Del Campo Romero2023-03-061-16/+3
| | | | | - Location seems to have no effect on 401 HTTP responses. - Content-Type is already set by page_failed_login.
* http.c: Compare headers as case-insensitiveXavier Del Campo Romero2023-03-041-1/+1
| | | | | Web browsers such as lynx send "Content-length" instead of "Content-Length" (as done by LibreWolf and Chromium).
* http.c: Use persistent cookiesXavier Del Campo Romero2023-03-041-0/+40
| | | | | | Cookies without "Expires" are considered non-persistent and thus can be removed by the web browser. Instead, slcl now sets persistent cookies that last for 1 year.
* http.c: Improve error detection for strotull(3)Xavier Del Campo Romero2023-03-041-1/+12
| | | | | set_length relies on user input to determine Content-Length, so it should be considered unreliable.
* Fix memory leak on failed realloc(3)Xavier Del Campo Romero2023-03-044-33/+79
| | | | | | | | | | According to C99 ยง7.20.3.4: If memory for the new object cannot be allocated, the old object is not deallocated and its value is unchanged. Therefore, a temporary pointer must be used to ensure the original object can still be deallocated should realloc(3) return a null pointer.
* Add man pageXavier Del Campo Romero2023-02-281-0/+123
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* Add usergenXavier Del Campo Romero2023-02-281-0/+29
| | | | | | This script takes a username and password from standard input and generates a JSON object that can be appended to the "users" object in db.json.
* Add MakefileXavier Del Campo Romero2023-02-281-0/+34
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* Add .gitignoreXavier Del Campo Romero2023-02-281-0/+4
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* Import dynstrXavier Del Campo Romero2023-02-282-0/+3
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* Initial commitXavier Del Campo Romero2023-02-2820-0/+6123
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