1#include <crypt.h> 2#include "libc.h" 3 4struct crypt_data; 5 6char *__crypt_des(const char *, const char *, char *); 7char *__crypt_md5(const char *, const char *, char *); 8char *__crypt_blowfish(const char *, const char *, char *); 9char *__crypt_sha256(const char *, const char *, char *); 10char *__crypt_sha512(const char *, const char *, char *); 11 12char *__crypt_r(const char *key, const char *salt, struct crypt_data *data) 13{ 14 /* Per the crypt_r API, the caller has provided a pointer to 15 * struct crypt_data; however, this implementation does not 16 * use the structure to store any internal state, and treats 17 * it purely as a char buffer for storing the result. */ 18 char *output = (char *)data; 19 if (salt[0] == '$' && salt[1] && salt[2]) { 20 if (salt[1] == '1' && salt[2] == '$') 21 return __crypt_md5(key, salt, output); 22 if (salt[1] == '2' && salt[3] == '$') 23 return __crypt_blowfish(key, salt, output); 24 if (salt[1] == '5' && salt[2] == '$') 25 return __crypt_sha256(key, salt, output); 26 if (salt[1] == '6' && salt[2] == '$') 27 return __crypt_sha512(key, salt, output); 28 } 29 return __crypt_des(key, salt, output); 30} 31 32weak_alias(__crypt_r, crypt_r); 33