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* Move header files to subdirectoryXavier Del Campo Romero2023-07-211-106/+0
| | | | | | | | | | | 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"
* http.c: Decode URL resource and parameters separatelyXavier Del Campo Romero2023-07-201-1/+1
| | | | | | | | | Given the following contrived example request: /example%FB%DC&arg%DE1=examplevalue%AA slcl must decode each token separately, so that percent-encoded characters '&', '=' or '?' do not get accidently intepreted.
* Support URL parametersXavier Del Campo Romero2023-07-201-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now, http_payload includes a list of human-readable parameters that can be read (but not modified) by users. Given the following example link: /test?key1=value1&key2=value2 This will generate two parameters, with the following values: { .args = { [0] = {.key = "key1", .value = "value1"}, [1] = {.key = "key2", .value = "value2"} }, .n_args = 2 } As expected, if any URL parameters are given, struct http_payload member "resource" is accordingly trimmed so as not to include any parameters. Therefore, considering the example above: {.args = {...}, .resource = "/test"} Limitations: - Since the definition of struct http_arg is both shared by http.h (as a read-only pointer within struct http_payload) and http.c (as a read/write pointer within struct ctx), its members (namely key and value) must remain as read/write pointers, even if they must not be modified by users of http.h.
* Send response on quota exceededXavier Del Campo Romero2023-07-201-1/+2
| | | | | | | | | | | | | | | | | 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.
* Implement user quotaXavier Del Campo Romero2023-07-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Initial commitXavier Del Campo Romero2023-07-201-0/+96