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