* [PATCH 03/17] http*: copy string returned by sha1_to_hex
@ 2009-05-29 17:58 Tay Ray Chuan
0 siblings, 0 replies; only message in thread
From: Tay Ray Chuan @ 2009-05-29 17:58 UTC (permalink / raw
To: Git Mailing List; +Cc: Junio C Hamano, Johannes Schindelin, Mike Hommey
In the fetch_index implementations in http-push.c and http-walker.c,
the string returned by sha1_to_hex is assumed to stay immutable.
This patch ensures that hex stays immutable by copying the string
returned by sha1_to_hex (via xstrdup) and frees it subsequently. It
also refactors free()'s and fclose()'s with labels.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
http-push.c | 45 ++++++++++++++++++++++++---------------------
http-walker.c | 43 +++++++++++++++++++++++--------------------
2 files changed, 47 insertions(+), 41 deletions(-)
diff --git a/http-push.c b/http-push.c
index 024f05b..9655b2c 100644
--- a/http-push.c
+++ b/http-push.c
@@ -955,7 +955,8 @@ static int add_send_request(struct object *obj, struct remote_lock *lock)
static int fetch_index(unsigned char *sha1)
{
- char *hex = sha1_to_hex(sha1);
+ int ret = 0;
+ char *hex = xstrdup(sha1_to_hex(sha1));
char *filename;
char *url;
char tmpfile[PATH_MAX];
@@ -977,18 +978,18 @@ static int fetch_index(unsigned char *sha1)
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
- free(url);
- return error("Unable to verify pack %s is available",
- hex);
+ ret = error("Unable to verify pack %s is available",
+ hex);
+ goto cleanup_pack;
}
} else {
- free(url);
- return error("Unable to start request");
+ ret = error("Unable to start request");
+ goto cleanup_pack;
}
if (has_pack_index(sha1)) {
- free(url);
- return 0;
+ ret = 0;
+ goto cleanup_pack;
}
if (push_verbosely)
@@ -1000,9 +1001,9 @@ static int fetch_index(unsigned char *sha1)
snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
indexfile = fopen(tmpfile, "a");
if (!indexfile) {
- free(url);
- return error("Unable to open local file %s for pack index",
- tmpfile);
+ ret = error("Unable to open local file %s for pack index",
+ tmpfile);
+ goto cleanup_pack;
}
slot = get_active_slot();
@@ -1033,21 +1034,23 @@ static int fetch_index(unsigned char *sha1)
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
- free(url);
- fclose(indexfile);
- return error("Unable to get pack index %s\n%s", url,
- curl_errorstr);
+ ret = error("Unable to get pack index %s\n%s", url,
+ curl_errorstr);
+ goto cleanup_index;
}
} else {
- free(url);
- fclose(indexfile);
- return error("Unable to start request");
+ ret = error("Unable to start request");
+ goto cleanup_index;
}
- free(url);
- fclose(indexfile);
+ ret = move_temp_to_file(tmpfile, filename);
- return move_temp_to_file(tmpfile, filename);
+cleanup_index:
+ fclose(indexfile);
+cleanup_pack:
+ free(url);
+ free(hex);
+ return ret;
}
static int setup_index(unsigned char *sha1)
diff --git a/http-walker.c b/http-walker.c
index 13ca934..a2c9810 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -371,7 +371,8 @@ static void prefetch(struct walker *walker, unsigned char *sha1)
static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
- char *hex = sha1_to_hex(sha1);
+ int ret = 0;
+ char *hex = xstrdup(sha1_to_hex(sha1));
char *filename;
char *url;
char tmpfile[PATH_MAX];
@@ -394,18 +395,18 @@ static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned ch
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
- free(url);
- return error("Unable to verify pack %s is available",
+ ret = error("Unable to verify pack %s is available",
hex);
+ goto cleanup_pack;
}
} else {
- free(url);
- return error("Unable to start request");
+ ret = error("Unable to start request");
+ goto cleanup_pack;
}
if (has_pack_index(sha1)) {
- free(url);
- return 0;
+ ret = 0;
+ goto cleanup_pack;
}
if (walker->get_verbosely)
@@ -417,9 +418,9 @@ static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned ch
snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
indexfile = fopen(tmpfile, "a");
if (!indexfile) {
- free(url);
- return error("Unable to open local file %s for pack index",
- tmpfile);
+ ret = error("Unable to open local file %s for pack index",
+ tmpfile);
+ goto cleanup_pack;
}
slot = get_active_slot();
@@ -450,21 +451,23 @@ static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned ch
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
- free(url);
- fclose(indexfile);
- return error("Unable to get pack index %s\n%s", url,
- curl_errorstr);
+ ret = error("Unable to get pack index %s\n%s", url,
+ curl_errorstr);
+ goto cleanup_index;
}
} else {
- free(url);
- fclose(indexfile);
- return error("Unable to start request");
+ ret = error("Unable to start request");
+ goto cleanup_index;
}
- free(url);
- fclose(indexfile);
+ ret = move_temp_to_file(tmpfile, filename);
- return move_temp_to_file(tmpfile, filename);
+cleanup_index:
+ fclose(indexfile);
+cleanup_pack:
+ free(url);
+ free(hex);
+ return ret;
}
static int setup_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
--
1.6.3.1
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2009-05-29 18:00 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-05-29 17:58 [PATCH 03/17] http*: copy string returned by sha1_to_hex Tay Ray Chuan
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).