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authorJim Meyering <jim@meyering.net>2007-04-10 01:01:44 +0200
committerJunio C Hamano <junkio@cox.net>2007-04-14 19:47:20 -0700
commit61d6ed139ff572937c8ff342cfa16e40d2f9011e (patch)
tree29b2e07cd60e44e0ad076c7d5b9fb690f346c737 /builtin-update-index.c
parente94b4d2f2a3a9b2aaaac15c33d5d31f76531ecbf (diff)
downloadgit-61d6ed139ff572937c8ff342cfa16e40d2f9011e.tar.gz
git-61d6ed139ff572937c8ff342cfa16e40d2f9011e.tar.xz
sscanf/strtoul: parse integers robustly
* builtin-grep.c (strtoul_ui): Move function definition from here, to... * git-compat-util.h (strtoul_ui): ...here, with an added "base" parameter. * builtin-grep.c (cmd_grep): Update use of strtoul_ui to include base, "10". * builtin-update-index.c (read_index_info): Diagnose an invalid mode integer that is out of range or merely larger than INT_MAX. (cmd_update_index): Use strtoul_ui, not sscanf. * convert-objects.c (write_subdirectory): Likewise. Signed-off-by: Jim Meyering <jim@meyering.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'builtin-update-index.c')
-rw-r--r--builtin-update-index.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/builtin-update-index.c b/builtin-update-index.c
index 71cef633c..6ed61ebc5 100644
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -227,6 +227,7 @@ static void read_index_info(int line_termination)
char *path_name;
unsigned char sha1[20];
unsigned int mode;
+ unsigned long ul;
int stage;
/* This reads lines formatted in one of three formats:
@@ -249,9 +250,12 @@ static void read_index_info(int line_termination)
if (buf.eof)
break;
- mode = strtoul(buf.buf, &ptr, 8);
- if (ptr == buf.buf || *ptr != ' ')
+ errno = 0;
+ ul = strtoul(buf.buf, &ptr, 8);
+ if (ptr == buf.buf || *ptr != ' '
+ || errno || (unsigned int) ul != ul)
goto bad_line;
+ mode = ul;
tab = strchr(ptr, '\t');
if (!tab || tab - ptr < 41)
@@ -547,7 +551,7 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
if (i+3 >= argc)
die("git-update-index: --cacheinfo <mode> <sha1> <path>");
- if ((sscanf(argv[i+1], "%o", &mode) != 1) ||
+ if ((strtoul_ui(argv[i+1], 8, &mode) != 1) ||
get_sha1_hex(argv[i+2], sha1) ||
add_cacheinfo(mode, sha1, argv[i+3], 0))
die("git-update-index: --cacheinfo"