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78 lines
2.5 KiB
78 lines
2.5 KiB
7 years ago
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Always use a function that we know will catch out-of-range values for UIDs and
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GIDs, which are currently unsigned 32-bit numbers everywhere, and which won't
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produce a result that'll silently be truncated if we store the result in a
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uid_t or gid_t.
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--- nss-pam-ldapd/nslcd/common.c
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+++ nss-pam-ldapd/nslcd/common.c
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@@ -273,19 +273,23 @@ long int binsid2id(const char *binsid)
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((((long int)binsid[i+2])&0xff)<<16)|((((long int)binsid[i+3])&0xff)<<24);
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}
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-#ifdef WANT_STRTOUI
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-/* provide a strtoui() implementation, similar to strtoul() but returning
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+/* provide a strtoid() implementation, similar to strtoul() but returning
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an range-checked unsigned int instead */
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-unsigned int strtoui(const char *nptr,char **endptr,int base)
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+unsigned int strtoid(const char *nptr,char **endptr,int base)
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{
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- unsigned long val;
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- val=strtoul(nptr,endptr,base);
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- if (val>UINT_MAX)
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+ long long val;
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+ /* use the fact that long long is 64-bit, even on 32-bit systems */
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+ val=strtoll(nptr,endptr,base);
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+ if (val>UINT32_MAX)
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{
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errno=ERANGE;
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- return UINT_MAX;
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+ return UINT32_MAX;
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}
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- /* If errno was set by strtoul, we'll pass it back as-is */
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- return (unsigned int)val;
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+ else if (val < 0)
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+ {
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+ errno=EINVAL;
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+ return UINT32_MAX;
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+ }
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+ /* If errno was set, we'll pass it back as-is */
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+ return (uint32_t)val;
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}
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-#endif /* WANT_STRTOUI */
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--- nss-pam-ldapd/nslcd/common.h
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+++ nss-pam-ldapd/nslcd/common.h
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@@ -139,31 +139,9 @@ int nsswitch_db_uses_ldap(const char *fi
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#endif /* _POSIX_HOST_NAME_MAX */
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#endif /* not HOST_NAME_MAX */
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-/* provide strtouid() function alias */
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-#if SIZEOF_UID_T == SIZEOF_UNSIGNED_LONG_INT
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-#define strtouid (uid_t)strtoul
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-#elif SIZEOF_UID_T == SIZEOF_UNSIGNED_LONG_LONG_INT
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-#define strtouid (uid_t)strtoull
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-#elif SIZEOF_UID_T == SIZEOF_UNSIGNED_INT
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-#define WANT_STRTOUI 1
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-#define strtouid (uid_t)strtoui
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-#else
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-#error unable to find implementation for strtouid()
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-#endif
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-
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-/* provide strtouid() function alias */
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-#if SIZEOF_GID_T == SIZEOF_UNSIGNED_LONG_INT
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-#define strtogid (gid_t)strtoul
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-#elif SIZEOF_GID_T == SIZEOF_UNSIGNED_LONG_LONG_INT
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-#define strtogid (gid_t)strtoull
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-#elif SIZEOF_GID_T == SIZEOF_UNSIGNED_INT
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-#ifndef WANT_STRTOUI
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-#define WANT_STRTOUI 1
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-#endif
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-#define strtogid (uid_t)strtoui
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-#else
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-#error unable to find implementation for strtogid()
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-#endif
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+uint32_t strtoid(const char *nptr,char **endptr,int base);
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+#define strtouid (uid_t)strtoid
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+#define strtogid (gid_t)strtoid
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#ifdef WANT_STRTOUI
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/* provide a strtoui() if it is needed */
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