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gotwebd: error path leak & semplification for render_index
On 2022/11/09 18:36:27 +0100, Omar Polo <op@omarpolo.com> wrote:
> On 2022/11/09 15:48:47 +0100, Stefan Sperling <stsp@stsp.name> wrote:
> > On Wed, Nov 09, 2022 at 03:27:52PM +0100, Omar Polo wrote:
> > > - strcmp(sd_dent[d_i]->d_name, "..") == 0)
> > > + strcmp(sd_dent[d_i]->d_name, "..") == 0 ||
> > > + sd_dent[d_i]->d_type != DT_DIR) {
> >
> > Unfortunately, we cannot rely on d_type directly. It is unreliable
> > because it depends on the filesystem implementation.
> > See got_path_dirent_type() in lib/path.c for a workaround.
>
> Indeed, i forgot about the NFS without readdir plus issue. Here's an
> updated diff that uses got_path_dirent_type.
ping
-----------------------------------------------
commit ee2f63eba45d621e2387fe7297d27dec9290a4e8
from: Omar Polo <op@omarpolo.com>
date: Tue Nov 22 11:00:49 2022 UTC
gotwebd: simplify gotweb_render_index
- drops the double loop; paginate in one go
- avoid lstat + got_path_dir_is_empty for each entry: use dt_type if
provided by the underlying filesystem
- fixes a memleak: before `continue' we need to call
gotweb_free_repo_dir
diff 0ceb1b9e49ae865b84f237977d7edbcaa9697161 ee2f63eba45d621e2387fe7297d27dec9290a4e8
commit - 0ceb1b9e49ae865b84f237977d7edbcaa9697161
commit + ee2f63eba45d621e2387fe7297d27dec9290a4e8
blob - fdc41cd4d2cb16ff84e4c42c6a8c826e6f239dc0
blob + 09d8f166fab40a704104d07aaa4c8e0564295c66
--- gotwebd/gotweb.c
+++ gotwebd/gotweb.c
@@ -993,10 +993,9 @@ gotweb_render_index(struct request *c)
struct repo_dir *repo_dir = NULL;
DIR *d;
struct dirent **sd_dent = NULL;
- char *c_path = NULL;
- struct stat st;
unsigned int d_cnt, d_i, d_disp = 0;
- int r;
+ unsigned int d_skipped = 0;
+ int r, type;
d = opendir(srv->repos_path);
if (d == NULL) {
@@ -1011,25 +1010,6 @@ gotweb_render_index(struct request *c)
goto done;
}
- /* get total count of repos */
- for (d_i = 0; d_i < d_cnt; d_i++) {
- if (strcmp(sd_dent[d_i]->d_name, ".") == 0 ||
- strcmp(sd_dent[d_i]->d_name, "..") == 0)
- continue;
-
- if (asprintf(&c_path, "%s/%s", srv->repos_path,
- sd_dent[d_i]->d_name) == -1) {
- error = got_error_from_errno("asprintf");
- goto done;
- }
-
- if (lstat(c_path, &st) == 0 && S_ISDIR(st.st_mode) &&
- !got_path_dir_is_empty(c_path))
- t->repos_total++;
- free(c_path);
- c_path = NULL;
- }
-
r = fcgi_printf(c, "<div id='index_header'>\n"
"<div id='index_header_project'>Project</div>\n");
if (r == -1)
@@ -1055,9 +1035,20 @@ gotweb_render_index(struct request *c)
break;
if (strcmp(sd_dent[d_i]->d_name, ".") == 0 ||
- strcmp(sd_dent[d_i]->d_name, "..") == 0)
+ strcmp(sd_dent[d_i]->d_name, "..") == 0) {
+ d_skipped++;
continue;
+ }
+ error = got_path_dirent_type(&type, srv->repos_path,
+ sd_dent[d_i]);
+ if (error)
+ goto done;
+ if (type != DT_DIR) {
+ d_skipped++;
+ continue;
+ }
+
if (qs->index_page > 0 && (qs->index_page *
srv->max_repos_display) > t->prev_disp) {
t->prev_disp++;
@@ -1071,21 +1062,14 @@ gotweb_render_index(struct request *c)
error = gotweb_load_got_path(c, repo_dir);
if (error && error->code == GOT_ERR_NOT_GIT_REPO) {
error = NULL;
- continue;
- }
- else if (error && error->code != GOT_ERR_LONELY_PACKIDX)
- goto done;
-
- if (lstat(repo_dir->path, &st) == 0 &&
- S_ISDIR(st.st_mode) &&
- !got_path_dir_is_empty(repo_dir->path))
- goto render;
- else {
gotweb_free_repo_dir(repo_dir);
repo_dir = NULL;
+ d_skipped++;
continue;
}
-render:
+ if (error && error->code != GOT_ERR_LONELY_PACKIDX)
+ goto done;
+
d_disp++;
t->prev_disp++;
@@ -1201,6 +1185,8 @@ render:
if (d_disp == srv->max_repos_display)
break;
}
+ t->repos_total = d_cnt - d_skipped;
+
if (srv->max_repos_display == 0)
goto done;
if (srv->max_repos > 0 && srv->max_repos < srv->max_repos_display)
gotwebd: error path leak & semplification for render_index