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feat(http): add step for parsing content-length header

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This commit is contained in:
Jef Roosens 2023-11-03 13:22:25 +01:00
parent 7a21bed2b2
commit fbf6557c05
Signed by: Jef Roosens
GPG key ID: B75D4F293C7052DB
3 changed files with 43 additions and 2 deletions
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1
src/http_loop/http_loop_req.c
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@ -144,5 +144,6 @@ void http_loop_process_request(event_loop_conn *conn) {
if ((conn->state != event_loop_conn_state_req) ||
(ctx->route->steps[ctx->current_step] == NULL)) {
ctx->current_step = 0;
conn->state = event_loop_conn_state_res;
}
}

35
src/http_loop/http_loop_steps.c
View file

@ -1,5 +1,6 @@
#include <math.h>
#include "http_loop.h"
#include "lander.h"
/*
@ -22,12 +23,44 @@ static bool string_to_num(size_t *res, const char *s, size_t len) {
return true;
}
bool http_loop_step_parse_content_length(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
for (size_t i = 0; i < ctx->req.num_headers; i++) {
struct phr_header *header = &ctx->req.headers[i];
if (strncmp(header->name, "Content-Length", header->name_len) == 0) {
// If the content length header is present but contains an invalid
// number, we return a bad request error
if (!string_to_num(&ctx->req.body.expected_len, header->value,
header->value_len)) {
ctx->res.status = http_bad_request;
conn->state = event_loop_conn_state_res;
return true;
}
// The content length was actually 0, so we can instantly return here
else if (ctx->req.body.expected_len == 0) {
return true;
}
}
}
// A zero here means there's no content length header
if (ctx->req.body.expected_len == 0) {
ctx->res.status = http_length_required;
conn->state = event_loop_conn_state_res;
}
return true;
}
/*
* Try to find and parse the Content-Length header. This function returns true
* if it was successful. If false is returned, the underlying step should
* immediately exit.
*/
static bool try_parse_content_length(event_loop_conn *conn) {
bool try_parse_content_length(event_loop_conn *conn) {
http_loop_ctx *ctx = conn->ctx;
for (size_t i = 0; i < ctx->req.num_headers; i++) {