On Sun, Jul 19, 2020 at 09:37:31AM -0700, Jeremy wrote:
> From: Jeremy Bobbin <[email protected]>
>
> stat(3)'s mtime is in local time while REQ_MOD is in GMT.
> This patch translates mtime to GMT before comparing to REQ_MOD.
> ---
> http.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/http.c b/http.c
> index 249c168..0c707be 100644
> --- a/http.c
> +++ b/http.c
> @@ -531,7 +531,8 @@ http_send_response(int fd, struct request *r)
> }
>
> /* compare with last modification date of the file */
> - if (difftime(st.st_mtim.tv_sec, mktime(&tm)) <= 0) {
> + time_t mtime = mktime(gmtime(&st.st_mtim.tv_sec));
> + if (difftime(mtime, mktime(&tm)) <= 0) {
> if (dprintf(fd,
> "HTTP/1.1 %d %s\r\n"
> "Date: %s\r\n"
> --
> 2.27.0
>
>
It looks incorrect to me, but I have not tested the patch.
Maybe it should be instead:
if (difftime(st.st_mtim.tv_sec, timegm(&tm)) <= 0) {
Note that strptime also assumes GMT and doesn't for example parse %Z (which is
an extension). That's probably OK generally.
--
Kind regards,
Hiltjo
