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/*
** Copyright 1998 - 2008 Double Precision, Inc. See COPYING for
** distribution information.
*/
#if HAVE_CONFIG_H
#include "courier_auth_config.h"
#endif
#include <string.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_CRYPT_H
#include <crypt.h>
#endif
#include "auth.h"
#include "courierauthdebug.h"
#if HAVE_CRYPT
#if NEED_CRYPT_PROTOTYPE
extern char *crypt(const char *, const char *);
#endif
#endif
extern int authcheckpasswordmd5(const char *, const char *);
extern int authcheckpasswordsha1(const char *, const char *);
static int safe_strcmp(const char *a, const char *nullable_b)
{
if (!nullable_b)
return -1;
return strcmp(a, nullable_b);
}
static int do_authcheckpassword(const char *password, const char *encrypted_password)
{
char *cpass;
if (strncmp(encrypted_password, "$1$", 3) == 0
|| strncasecmp(encrypted_password, "{MD5}", 5) == 0
|| strncasecmp(encrypted_password, "{MD5RAW}", 8) == 0
)
return (authcheckpasswordmd5(password, encrypted_password));
if (strncasecmp(encrypted_password, "{SHA}", 5) == 0 ||
strncasecmp(encrypted_password, "{SHA256}", 8) == 0 ||
strncasecmp(encrypted_password, "{SHA512}", 8) == 0 ||
strncasecmp(encrypted_password, "{SSHA}", 6) == 0)
return (authcheckpasswordsha1(password, encrypted_password));
#if HAVE_CRYPT
if (strncasecmp(encrypted_password, "{CRYPT}", 7) == 0)
encrypted_password += 7;
#endif
#if HAVE_CRYPT
cpass = crypt(password, encrypted_password);
if (cpass == NULL) {
return 1;
} else {
return safe_strcmp(encrypted_password, cpass);
}
#else
return safe_strcmp(encrypted_password, password);
#endif
}
int authcheckpassword(const char *password, const char *encrypted_password)
{
int rc;
rc=do_authcheckpassword(password, encrypted_password);
if (rc == 0)
{
DPRINTF("password matches successfully");
}
else if (courier_authdebug_login_level >= 2)
{
DPRINTF("supplied password '%s' does not match encrypted password '%s'",
password, encrypted_password);
}
else
{
DPRINTF("supplied password does not match encrypted password");
}
return rc;
}
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