From de5964178b62d4c98d43307f7d2ee5b6e0729483 Mon Sep 17 00:00:00 2001 From: Bernhard Reutner-Fischer Date: Wed, 18 Jan 2012 08:41:18 +0100 Subject: libcrypt: shrink crypt() again - unmodularise modularisation added too much bloat for no benefit, undo. $ ../busybox/scripts/bloat-o-meter .lib.05/libcrypt-0.9.33-rc1-git.so lib/libcrypt-0.9.33-rc1-git.so function old new delta crypt 130 46 -84 .rodata 2704 - -2704 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-2788) Total: -2788 bytes Signed-off-by: Bernhard Reutner-Fischer --- libcrypt/crypt.c | 43 +++++++++++++------------------------------ 1 file changed, 13 insertions(+), 30 deletions(-) (limited to 'libcrypt') diff --git a/libcrypt/crypt.c b/libcrypt/crypt.c index 188a6a081..e5274a589 100644 --- a/libcrypt/crypt.c +++ b/libcrypt/crypt.c @@ -6,43 +6,26 @@ */ #define __FORCE_GLIBC -#include #include -#include -#include +#include #include "libcrypt.h" -typedef char *(*crypt_impl_f)(const unsigned char *pw, const unsigned char *salt); - -static const struct { - const char *salt_pfx; - const crypt_impl_f crypt_impl; -} crypt_impl_tab[] = { - { "$1$", __md5_crypt }, -#ifdef __UCLIBC_HAS_SHA256_CRYPT_IMPL__ - { "$5$", __sha256_crypt }, -#endif -#ifdef __UCLIBC_HAS_SHA512_CRYPT_IMPL__ - { "$6$", __sha512_crypt }, -#endif - { NULL, __des_crypt }, -}; - char *crypt(const char *key, const char *salt) { const unsigned char *ukey = (const unsigned char *)key; const unsigned char *usalt = (const unsigned char *)salt; - size_t i; - - for (i = 0; i < ARRAY_SIZE(crypt_impl_tab); i++) { - if (crypt_impl_tab[i].salt_pfx != NULL && - strncmp(crypt_impl_tab[i].salt_pfx, salt, strlen(crypt_impl_tab[i].salt_pfx))) - continue; - return crypt_impl_tab[i].crypt_impl(ukey, usalt); + if (salt[0] == '$' && salt[2] == '$') { + if (*++salt == '1') + return __md5_crypt(ukey, usalt); +#ifdef __UCLIBC_HAS_SHA256_CRYPT_IMPL__ + else if (*salt == '5') + return __sha256_crypt(ukey, usalt); +#endif +#ifdef __UCLIBC_HAS_SHA512_CRYPT_IMPL__ + else if (*salt == '6') + return __sha512_crypt(ukey, usalt); +#endif } - - /* no crypt implementation was found, set errno to ENOSYS and return NULL */ - __set_errno(ENOSYS); - return NULL; + return __des_crypt(ukey, usalt); } -- cgit v1.2.3