libweb

Author	SHA1	Message	Date
Xavier Del Campo Romero	65031ca350	Send HTTP headers to payload callback Even if libweb already parses some common headers, such as Content-Length, some users might find it interesting to inspect which headers were received from a request. Since HTTP/1.1 does not define a limit on the number of maximum headers a client can send, for security reasons a maximum value must be provided by the user. Any extra headers shall be then discarded by libweb. An example application showing this new feature is also provided.	2023-11-18 01:03:12 +01:00
Xavier Del Campo Romero	0222b75e85	Rename project from slweb to libweb It was found out there was another project of the same name around (https://git.sr.ht/~strahinja/slweb/), also related to website generation. In order to avoid confusion, a new name has been chosen for this project. Surprisingly, libweb was not in use by any distributions (according to https://repology.org and AUR index), and it should reflect well the intention behind this project i.e., being a library to build web-related stuff.	2023-10-11 00:07:13 +02:00
Xavier Del Campo Romero	f9e3516f50	handler: Define port as unsigned short Port numbers are unsigned by definition. Fortunately, this was a minor issues since server_init was doing an implicit cast to unsigned short.	2023-09-07 15:41:46 +02:00
Xavier Del Campo Romero	8c3ba33ced	Move header files to subdirectory Since slweb is meant as a library, it is advisable to keep public header files under their own directory in order to avoid name clashing i.e., #include "something.h" Now becomes: #include "slweb/something.h"	2023-07-21 01:28:38 +02:00
Xavier Del Campo Romero	35ced95c36	wildcard_cmp: Allow case-insensitive searches The new search feature will require them.	2023-07-20 23:52:55 +02:00
Xavier Del Campo Romero	0759122e4c	Split wildcard_cmp into its own component Future commits will make use of this function outside handler.c.	2023-07-20 23:52:55 +02:00
Xavier Del Campo Romero	2e8485d687	Replace select(2) with poll(2) select(2) has a number of well-known issues (e.g.: FD_SETSIZE limiting the maximum amount of file descriptors to watch) that are mostly solved by poll(2) and thus can be used as a drop-in replacement.	2023-07-20 23:52:53 +02:00
Xavier Del Campo Romero	af16aa6702	Define _POSIX_C_SOURCE This allows using the default compiler defined by make(1) (i.e., c99(1)), thus improving POSIX compatibility.	2023-07-20 23:52:53 +02:00
Xavier Del Campo Romero	483169d192	Send response on quota exceeded So far, slcl would just close the connection with a client when the Content-Length of an incoming request exceeded the user quota, without any meaningful information given back to the user. Now, slcl responds with a HTML file with meaningful information about the error. Limitations: - While this commits has been successfully tested on ungoogled-chromium, LibreWolf (and I assume Firefox and any other derivates too) does not seem to receive the response from the server. - However, this issue only occurred during local testing, but not on remote instances.	2023-07-20 23:52:53 +02:00
Xavier Del Campo Romero	7b810b55ab	Implement user quota 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.	2023-07-20 23:52:52 +02:00
Xavier Del Campo Romero	fa4745b4ba	Perform some minor optimizations	2023-07-20 23:52:51 +02:00
Xavier Del Campo Romero	67ffb772b7	Fix memory leak on failed realloc(3) According to C99 §7.20.3.4: 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.	2023-07-20 23:52:51 +02:00
Xavier Del Campo Romero	2968c5f67d	Initial commit	2023-07-20 23:52:47 +02:00

13 Commits