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[mod_cgi] perf: use stat_cache for cgi handler

This commit is contained in:
Glenn Strauss 2018-11-11 19:33:17 -05:00
parent d182e90bb1
commit aa00359e6c
1 changed files with 12 additions and 10 deletions
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22
src/mod_cgi.c
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@ -703,6 +703,15 @@ static int cgi_write_request(server *srv, handler_ctx *hctx, int fd) {
return 0;
}
static struct stat * cgi_stat(server *srv, connection *con, buffer *path, struct stat *st) {
/* CGI might be executable even if it is not readable
* (stat_cache_get_entry() currently checks file is readable)*/
stat_cache_entry *sce;
return (HANDLER_ERROR != stat_cache_get_entry(srv, con, path, &sce))
? &sce->st
: (0 == stat(path->ptr, st)) ? st : NULL;
}
static int cgi_create_env(server *srv, connection *con, plugin_data *p, handler_ctx *hctx, buffer *cgi_handler) {
char *args[3];
int to_cgi_fds[2];
@ -713,7 +722,7 @@ static int cgi_create_env(server *srv, connection *con, plugin_data *p, handler_
if (!buffer_string_is_empty(cgi_handler)) {
/* stat the exec file */
struct stat st;
if (-1 == (stat(cgi_handler->ptr, &st))) {
if (NULL == cgi_stat(srv, con, cgi_handler, &st)) {
log_error_write(srv, __FILE__, __LINE__, "sbss",
"stat for cgi-handler", cgi_handler,
"failed:", strerror(errno));
@ -888,7 +897,6 @@ static int mod_cgi_patch_connection(server *srv, connection *con, plugin_data *p
URIHANDLER_FUNC(cgi_is_handled) {
plugin_data *p = p_d;
stat_cache_entry *sce = NULL;
struct stat stbuf;
struct stat *st;
data_string *ds;
@ -901,14 +909,8 @@ URIHANDLER_FUNC(cgi_is_handled) {
ds = (data_string *)array_match_key_suffix(p->conf.cgi, con->physical.path);
if (NULL == ds) return HANDLER_GO_ON;
if (HANDLER_ERROR != stat_cache_get_entry(srv, con, con->physical.path, &sce)) {
st = &sce->st;
} else {
/* CGI might be executable even if it is not readable
* (stat_cache_get_entry() currently checks file is readable)*/
if (0 != stat(con->physical.path->ptr, &stbuf)) return HANDLER_GO_ON;
st = &stbuf;
}
st = cgi_stat(srv, con, con->physical.path, &stbuf);
if (NULL == st) return HANDLER_GO_ON;
if (!S_ISREG(st->st_mode)) return HANDLER_GO_ON;
if (p->conf.execute_x_only == 1 && (st->st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) == 0) return HANDLER_GO_ON;