nihilist/tor
1
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/core/tor.git synced 2024-11-10 21:23:58 +01:00
Code Issues Packages Projects Releases Wiki Activity

Handle empty/zero length encoded intro points more gracefully.

Browse Source 
In theory these should never the triggered as the only caller now
validates the parameters before this routine gets called.
This commit is contained in:
Yawning Angel 2015-04-02 12:42:06 +00:00 committed by Nick Mathewson
parent 7b5f558da4
commit dc3cb00080
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/or/routerparse.c
View File

@ -4928,7 +4928,7 @@ rend_parse_introduction_points(rend_service_descriptor_t *parsed,
size_t intro_points_encoded_size)
{
const char *current_ipo, *end_of_intro_points;
smartlist_t *tokens;
smartlist_t *tokens = NULL;
directory_token_t *tok;
rend_intro_point_t *intro;
extend_info_t *info;
@ -4937,8 +4937,10 @@ rend_parse_introduction_points(rend_service_descriptor_t *parsed,
tor_assert(parsed);
/** Function may only be invoked once. */
tor_assert(!parsed->intro_nodes);
tor_assert(intro_points_encoded);
tor_assert(intro_points_encoded_size > 0);
if (!intro_points_encoded || intro_points_encoded_size == 0) {
log_warn(LD_REND, "Empty or zero size introduction point list");
goto err;
}
/* Consider one intro point after the other. */
current_ipo = intro_points_encoded;
end_of_intro_points = intro_points_encoded + intro_points_encoded_size;
@ -5042,8 +5044,10 @@ rend_parse_introduction_points(rend_service_descriptor_t *parsed,
done:
/* Free tokens and clear token list. */
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_clear(t));
smartlist_free(tokens);
if (tokens) {
SMARTLIST_FOREACH(tokens, directory_token_t *, t, token_clear(t));
smartlist_free(tokens);
}
if (area)
memarea_drop_all(area);