I use lighttpd-1.4.11 in production with mod_cml.
I needed to set the "Expires" from lua on some pages so i coded it.
After about a month of use i thought maybe you would be interested in adding this feature.
Lua Programming:
output_expires = <num>
mod_cml_lua.c:
(i added this right after the code with "output_contenttype")
/* get the expires from lua in seconds and generate the appropriate
* response. values are in seconds (offset) from current time.
*/
if (0 == lua_to_c_get_string(L, "output_expires", b)) {
char timebuf[sizeof("Thu, 09 May 1985 13:13:13 GMT")];
char *err;
int num;
time_t t = 0;
size_t len;
buffer *cc = buffer_init(); /* cc = cache-control */
/* get the value from lua to an integer */
num = strtol(b->ptr, &err, 10);
if (*err != NULL) {
log_error_write(srv, __FILE__, __LINE__, "s",
"outout_expires not a valid <num>", b);
return HANDLER_ERROR;
}
/* current time + offset */
time(&t);
t += num;
if (0 == (len = strftime(timebuf, sizeof(timebuf),
"%a, %d %b %Y %H:%M:%S GMT", gmtime(&(t))))) {
/* could not set expire header, out of mem */
return HANDLER_GO_ON;
}
/* HTTP/1.0 */
response_header_overwrite(srv, con, CONST_STR_LEN("Expires"), timebuf, sizeof(timebuf) - 1);
/* HTTP/1.1 */
if (num != 0) {
buffer_copy_string_len(cc, "max-age=", 8);
buffer_append_string(cc, b->ptr);
} else
buffer_copy_string_len(cc, "no-cache", 8);
buffer_append_string_len(cc, ", must-revalidate", 17);
response_header_overwrite(srv, con, CONST_STR_LEN("Cache-Control"), CONST_BUF_LEN(cc));
buffer_free(cc);
}
I have added the "must-revalidate" because i needed it, but you can just comment it out.
I use lighttpd-1.4.11 release (no - svn).
thanks,
-- amix.
