From: john at keeping.me.uk (John Keeping)
Subject: [PATCH 07/19] ui-log.c: use a strbuf for refs
Date: Sun, 7 Apr 2013 10:29:58 +0100 [thread overview]
Message-ID: <b78337d0b0ab1b8b5ef46df74f1fd37284561dbb.1365326321.git.john@keeping.me.uk> (raw)
In-Reply-To: <cover.1365326321.git.john@keeping.me.uk>
This avoids using a fixed-size buffer in fmt() for a user-supplied ref
string.
Signed-off-by: John Keeping <john at keeping.me.uk>
---
ui-log.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/ui-log.c b/ui-log.c
index d75d7bf..7c3308c 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -244,15 +244,18 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
cgit_free_commitinfo(info);
}
-static const char *disambiguate_ref(const char *ref)
+static const char *disambiguate_ref(const char *ref, int *must_free_result)
{
unsigned char sha1[20];
- const char *longref;
+ struct strbuf longref = STRBUF_INIT;
- longref = fmt("refs/heads/%s", ref);
- if (get_sha1(longref, sha1) == 0)
- return longref;
+ strbuf_addf(&longref, "refs/heads/%s", ref);
+ if (get_sha1(longref.buf, sha1) == 0) {
+ *must_free_result = 1;
+ return strbuf_detach(&longref, NULL);
+ }
+ *must_free_result = 0;
return ref;
}
@@ -285,6 +288,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
struct commit *commit;
struct vector vec = VECTOR_INIT(char *);
int i, columns = commit_graph ? 4 : 3;
+ int must_free_tip = 0;
char *arg;
/* First argv is NULL */
@@ -292,7 +296,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
if (!tip)
tip = ctx.qry.head;
- tip = disambiguate_ref(tip);
+ tip = disambiguate_ref(tip, &must_free_tip);
vector_push(&vec, &tip, 0);
if (grep && pattern && *pattern) {
@@ -430,4 +434,8 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
html("</td></tr>\n");
}
+
+ /* If we allocated tip then it is safe to cast away const. */
+ if (must_free_tip)
+ free((char*) tip);
}
--
1.8.2.692.g17a9715
next prev parent reply other threads:[~2013-04-07 9:29 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-07 9:29 [PATCH 00/19] Fixed-size buffer removal john
2013-04-07 9:29 ` [PATCH 01/19] Fix out-of-bounds memory accesses with virtual_root="" john
2013-04-07 9:29 ` [PATCH 02/19] Remove redundant calls to fmt("%s", ...) john
2013-04-07 11:05 ` Jason
2013-04-07 11:25 ` john
2013-04-07 11:30 ` Jason
2013-04-07 9:29 ` [PATCH 03/19] cache.c: don't use statically sized buffers for filenames john
2013-04-07 11:11 ` Jason
2013-04-07 11:30 ` john
2013-04-07 9:29 ` [PATCH 04/19] html: introduce html_txtf and html_vtxtf functions john
2013-04-07 9:29 ` [PATCH 05/19] Convert cgit_print_error to a variadic function john
2013-04-07 9:29 ` [PATCH 06/19] scan-tree: use struct strbuf instead of static buffers john
2013-04-07 11:29 ` Jason
2013-04-07 11:33 ` john
2013-04-07 9:29 ` john [this message]
2013-04-07 9:29 ` [PATCH 08/19] ui-log.c: use a strbuf for grep arguments john
2013-04-07 9:30 ` [PATCH 09/19] ui-plain.c: use struct strbuf instead of fmt() john
2013-04-07 9:30 ` [PATCH 10/19] ui-refs.c: use struct strbuf instead of fixed-size buffers john
2013-04-07 13:08 ` Jason
2013-04-07 9:30 ` [PATCH 11/19] ui-repolist.c: use struct strbuf for repository paths john
2013-04-07 9:30 ` [PATCH 12/19] ui-snapshot.c: tidy up memory management in write_archive_type john
2013-04-07 9:30 ` [PATCH 13/19] ui-snapshot: use a struct strbuf instead of fixed-size buffers john
2013-04-07 13:25 ` Jason
2013-04-07 13:37 ` john
2013-04-07 13:39 ` Jason
2013-04-07 13:33 ` Jason
2013-04-07 9:30 ` [PATCH 14/19] ui-summary.c: use " john
2013-04-07 12:20 ` Jason
2013-04-07 12:36 ` john
2013-04-07 12:41 ` Jason
2013-04-07 12:43 ` Jason
2013-04-07 9:30 ` [PATCH 15/19] ui-tag.c: use struct strbuf for user-supplied data john
2013-04-07 9:30 ` [PATCH 16/19] ui-tree.c: use struct strbuf instead of fmt() john
2013-04-07 9:30 ` [PATCH 17/19] cgit.c: " john
2013-04-07 9:30 ` [PATCH 18/19] html: add html_attrf to output an attribute value from a format string john
2013-04-07 9:30 ` [PATCH 19/19] ui-shared.c: use struct strbuf instead of fmt() john
2013-04-07 12:37 ` Jason
2013-04-07 12:44 ` john
2013-04-07 12:49 ` cgit
2013-04-07 13:08 ` [PATCH 00/19] Fixed-size buffer removal Jason
2013-04-07 13:14 ` john
2013-04-08 15:31 ` Jason
2013-04-08 17:38 ` john
2013-04-08 18:28 ` Jason
2013-04-07 14:26 ` [PATCH v2 00/22] " john
2013-04-07 14:26 ` [PATCH v2 01/22] Fix out-of-bounds memory accesses with virtual_root="" john
2013-04-07 14:26 ` [PATCH v2 02/22] Mark char* fields in struct cgit_page as const john
2013-04-07 14:26 ` [PATCH v2 03/22] Remove redundant calls to fmt("%s", ...) john
2013-04-07 14:26 ` [PATCH v2 04/22] html.c: add fmtalloc helper john
2013-04-07 14:26 ` [PATCH v2 05/22] shared.c: add strbuf_ensure_end john
2013-04-07 14:26 ` [PATCH v2 06/22] cache.c: don't use statically sized buffers for filenames john
2013-04-07 14:26 ` [PATCH v2 07/22] html: introduce html_txtf and html_vtxtf functions john
2013-04-07 14:26 ` [PATCH v2 08/22] Convert cgit_print_error to a variadic function john
2013-04-07 15:01 ` [PATCH 08/22 v3] " john
2013-04-07 14:26 ` [PATCH v2 09/22] scan-tree: use struct strbuf instead of static buffers john
2013-04-07 14:26 ` [PATCH v2 10/22] ui-log.c: use a strbuf for refs john
2013-04-07 14:26 ` [PATCH v2 11/22] ui-log.c: use a strbuf for grep arguments john
2013-04-07 14:26 ` [PATCH v2 12/22] ui-plain.c: use struct strbuf instead of fmt() john
2013-04-07 14:26 ` [PATCH v2 13/22] ui-refs.c: use struct strbuf instead of fixed-size buffers john
2013-04-07 14:26 ` [PATCH v2 14/22] ui-repolist.c: use struct strbuf for repository paths john
2013-04-07 14:26 ` [PATCH v2 15/22] ui-snapshot.c: tidy up memory management in write_archive_type john
2013-04-07 14:26 ` [PATCH v2 16/22] ui-snapshot: use a struct strbuf instead of fixed-size buffers john
2013-04-07 14:26 ` [PATCH v2 17/22] ui-summary.c: use " john
2013-04-07 14:26 ` [PATCH v2 18/22] ui-tag.c: use struct strbuf for user-supplied data john
2013-04-07 14:26 ` [PATCH v2 19/22] ui-tree.c: use struct strbuf instead of fmt() john
2013-04-07 14:26 ` [PATCH v2 20/22] cgit.c: " john
2013-04-07 14:26 ` [PATCH v2 21/22] html: add html_attrf to output an attribute value from a format string john
2013-04-07 14:26 ` [PATCH v2 22/22] ui-shared.c: use struct strbuf instead of fmt() john
2013-04-07 15:21 ` Jason
2013-04-07 15:43 ` john
2013-04-07 15:46 ` Jason
2013-04-08 10:22 ` cgit
2013-04-08 14:04 ` Jason
2013-04-08 17:40 ` john
2013-04-08 14:23 ` [PATCH 00/19] Fixed-size buffer removal Jason
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