1 #include "libc.h"
2 #include <crypt.h>
3
4 struct crypt_data;
5
6 char* __crypt_des(const char*, const char*, char*);
7 char* __crypt_md5(const char*, const char*, char*);
8 char* __crypt_blowfish(const char*, const char*, char*);
9 char* __crypt_sha256(const char*, const char*, char*);
10 char* __crypt_sha512(const char*, const char*, char*);
11
__crypt_r(const char * key,const char * salt,struct crypt_data * data)12 char* __crypt_r(const char* key, const char* salt, struct crypt_data* data) {
13 /* Per the crypt_r API, the caller has provided a pointer to
14 * struct crypt_data; however, this implementation does not
15 * use the structure to store any internal state, and treats
16 * it purely as a char buffer for storing the result. */
17 char* output = (char*)data;
18 if (salt[0] == '$' && salt[1] && salt[2]) {
19 if (salt[1] == '1' && salt[2] == '$')
20 return __crypt_md5(key, salt, output);
21 if (salt[1] == '2' && salt[3] == '$')
22 return __crypt_blowfish(key, salt, output);
23 if (salt[1] == '5' && salt[2] == '$')
24 return __crypt_sha256(key, salt, output);
25 if (salt[1] == '6' && salt[2] == '$')
26 return __crypt_sha512(key, salt, output);
27 }
28 return __crypt_des(key, salt, output);
29 }
30
31 weak_alias(__crypt_r, crypt_r);
32