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parse last-modified timestamp and compare it. 

let's hope that strptime() works everywhere


git-svn-id: svn://svn.lighttpd.net/lighttpd/trunk@58 152afb58-edef-0310-8abb-c4023f1b3aa9
This commit is contained in:
Jan Kneschke 2005-02-28 17:26:33 +00:00
parent c3662bebf1
commit 6e83b23ec9
1 changed files with 20 additions and 7 deletions
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27
src/response.c
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@ -1165,12 +1165,11 @@ handler_t http_response_prepare(server *srv, connection *con) {
/* check if etag + last-modified */
if (con->request.http_if_modified_since) {
char buf[64];
struct tm *tm;
struct tm tm;
size_t used_len;
char *semicolon;
tm = gmtime(&(con->fce->st.st_mtime));
strftime(buf, sizeof(buf)-1, "%a, %d %b %Y %H:%M:%S GMT", tm);
strftime(buf, sizeof(buf)-1, "%a, %d %b %Y %H:%M:%S GMT", gmtime(&(con->fce->st.st_mtime)));
if (NULL == (semicolon = strchr(con->request.http_if_modified_since, ';'))) {
used_len = strlen(con->request.http_if_modified_since);
@ -1181,10 +1180,24 @@ handler_t http_response_prepare(server *srv, connection *con) {
if (0 == strncmp(con->request.http_if_modified_since, buf, used_len)) {
con->http_status = 304;
} else {
log_error_write(srv, __FILE__, __LINE__, "ss",
con->request.http_if_modified_since, buf);
con->http_status = 412;
/* convert to timestamp */
if (used_len < sizeof(buf) - 1) {
time_t t;
strncpy(buf, con->request.http_if_modified_since, used_len);
buf[used_len] = '\0';
strptime(buf, "%a, %d %b %Y %H:%M:%S GMT", &tm);
if (-1 != (t = mktime(&tm)) &&
t <= con->fce->st.st_mtime) {
con->http_status = 304;
}
} else {
log_error_write(srv, __FILE__, __LINE__, "ss",
con->request.http_if_modified_since, buf);
con->http_status = 412;
}
}
} else {
con->http_status = 304;