lorenz.stechauner/sesimos
1
1
Fork 0
Code Issues Pull Requests Projects Releases Activity

Possibility to accept If-Modified-Since field

Browse Source
This commit is contained in:
Lorenz Stechauner
2020-12-23 18:57:37 +01:00
parent 9d1594dc01
commit 495381ab3f
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/client.c
View File

@ -46,6 +46,7 @@ int client_request_handler(sock *client, int req_num) {
unsigned long content_length = 0;
FILE *file = NULL;
msg_buf[0] = 0;
int accept_if_modified_since = 0;
http_res res;
sprintf(res.version, "1.1");
@ -183,10 +184,10 @@ int client_request_handler(sock *client, int req_num) {
sprintf(err_msg, "Unable to communicate with internal file cache.");
goto respond;
}
http_add_header_field(&res.hdr, "Last-Modified",
http_format_date(uri.meta->stat.st_mtime, buf0, sizeof(buf0)));
sprintf(buf0, "%s, charset=%s", uri.meta->type, uri.meta->charset);
http_add_header_field(&res.hdr, "Content-Type", buf0);
char *last_modified = http_format_date(uri.meta->stat.st_mtime, buf0, sizeof(buf0));
http_add_header_field(&res.hdr, "Last-Modified", last_modified);
sprintf(buf1, "%s, charset=%s", uri.meta->type, uri.meta->charset);
http_add_header_field(&res.hdr, "Content-Type", buf1);
if (uri.meta->etag[0] != 0) {
http_add_header_field(&res.hdr, "ETag", uri.meta->etag);
}
@ -196,8 +197,10 @@ int client_request_handler(sock *client, int req_num) {
http_add_header_field(&res.hdr, "Cache-Control", "public, max-age=86400");
}
char *if_modified_since = http_get_header_field(&req.hdr, "If-Modified-Since", HTTP_LOWER);
char *if_none_match = http_get_header_field(&req.hdr, "If-None-Match", HTTP_LOWER);
if (if_none_match != NULL && strncmp(if_none_match, uri.meta->etag, sizeof(uri.meta->etag)) == 0) {
if ((if_none_match != NULL && strstr(if_none_match, uri.meta->etag) == NULL) || (accept_if_modified_since &&
if_modified_since != NULL && strncmp(if_modified_since, last_modified, strlen(last_modified)) == 0)) {
res.status = http_get_status(304);
goto respond;
}