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sscanf/strtoul: parse integers robustly

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* 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>
This commit is contained in:
Jim Meyering
2007-04-10 01:01:44 +02:00
committed by Junio C Hamano
parent e94b4d2f2a
commit 61d6ed139f
4 changed files with 22 additions and 18 deletions
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13
git-compat-util.h
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@ -301,4 +301,17 @@ static inline int prefixcmp(const char *str, const char *prefix)
return strncmp(str, prefix, strlen(prefix));
}
static inline int strtoul_ui(char const *s, int base, unsigned int *result)
{
unsigned long ul;
char *p;
errno = 0;
ul = strtoul(s, &p, base);
if (errno || *p || p == s || (unsigned int) ul != ul)
return -1;
*result = ul;
return 0;
}
#endif