* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/*
- * lutil_password(credentials, password)
+ * int lutil_passwd(
+ * const struct berval *passwd,
+ * const struct berval *cred,
+ * const char **schemes )
*
- * Returns true if user supplied credentials matches
- * the stored password.
+ * Returns true if user supplied credentials (cred) matches
+ * the stored password (passwd).
*
* Due to the use of the crypt(3) function
* this routine is NOT thread-safe.
#include <stdio.h>
#include <ac/stdlib.h>
-
#include <ac/string.h>
-#include <ac/unistd.h>
-#include <ac/crypt.h>
-#include <lber.h>
+#ifdef SLAPD_SPASSWD
+# include <sasl.h>
+#endif
-#include "lutil_md5.h"
-#include "lutil_sha1.h"
-#include "lutil.h"
+#ifdef SLAPD_KPASSWD
+# include <ac/krb.h>
+# include <ac/krb5.h>
+#endif
+
+#include <ac/param.h>
+
+#include <ac/unistd.h>
+#include <ac/crypt.h>
#ifdef HAVE_SHADOW_H
# include <shadow.h>
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
+#ifdef HAVE_AIX_SECURITY
+# include <userpw.h>
+#endif
+
+#include <lber.h>
+
+#include "lutil_md5.h"
+#include "lutil_sha1.h"
+#include "lutil.h"
+
+static const unsigned char crypt64[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./";
struct pw_scheme;
const struct berval *passwd,
const struct berval *cred );
-typedef struct berval * (*PASSWD_GEN_FUNC) (
+typedef struct berval * (*PASSWD_HASH_FUNC) (
const struct pw_scheme *scheme,
const struct berval *passwd );
struct pw_scheme {
struct berval name;
PASSWD_CHK_FUNC chk_fn;
- PASSWD_GEN_FUNC gen_fn;
+ PASSWD_HASH_FUNC hash_fn;
};
/* password check routines */
const struct berval *passwd,
const struct berval *cred );
+#ifdef SLAPD_SPASSWD
+static int chk_sasl(
+ const struct pw_scheme *scheme,
+ const struct berval *passwd,
+ const struct berval *cred );
+#endif
+
+#ifdef SLAPD_KPASSWD
+static int chk_kerberos(
+ const struct pw_scheme *scheme,
+ const struct berval *passwd,
+ const struct berval *cred );
+#endif
+
+#ifdef SLAPD_CRYPT
static int chk_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
+#if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
static int chk_unix(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
+#endif
+#endif
-/* password generation routines */
-static struct berval *gen_sha1(
+/* password hash routines */
+static struct berval *hash_sha1(
const struct pw_scheme *scheme,
const struct berval *passwd );
-static struct berval *gen_ssha1(
+static struct berval *hash_ssha1(
const struct pw_scheme *scheme,
const struct berval *passwd );
-static struct berval *gen_smd5(
+static struct berval *hash_smd5(
const struct pw_scheme *scheme,
const struct berval *passwd );
-static struct berval *gen_md5(
+static struct berval *hash_md5(
const struct pw_scheme *scheme,
const struct berval *passwd );
-static struct berval *gen_crypt(
+#ifdef SLAPD_CRYPT
+static struct berval *hash_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd );
+#endif
static const struct pw_scheme pw_schemes[] =
{
- { {sizeof("{SSHA}")-1, "{SSHA}"}, chk_ssha1, gen_ssha1 },
- { {sizeof("{SHA}")-1, "{SHA}"}, chk_sha1, gen_sha1 },
+ { {sizeof("{SSHA}")-1, "{SSHA}"}, chk_ssha1, hash_ssha1 },
+ { {sizeof("{SHA}")-1, "{SHA}"}, chk_sha1, hash_sha1 },
- { {sizeof("{SMD5}")-1, "{SMD5}"}, chk_smd5, gen_smd5 },
- { {sizeof("{MD5}")-1, "{MD5}"}, chk_md5, gen_md5 },
+ { {sizeof("{SMD5}")-1, "{SMD5}"}, chk_smd5, hash_smd5 },
+ { {sizeof("{MD5}")-1, "{MD5}"}, chk_md5, hash_md5 },
-#ifdef SLAPD_CRYPT
- { {sizeof("{CRYPT}")-1, "{CRYPT}"}, chk_crypt, gen_crypt },
+#ifdef SLAPD_SPASSWD
+ { {sizeof("{SASL}")-1, "{SASL}"}, chk_sasl, NULL },
+#endif
+
+#ifdef SLAPD_KPASSWD
+ { {sizeof("{KERBEROS}")-1, "{KERBEROS}"}, chk_kerberos, NULL },
#endif
-# if defined( HAVE_GETSPNAM ) \
- || ( defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD ) )
+
+#ifdef SLAPD_CRYPT
+ { {sizeof("{CRYPT}")-1, "{CRYPT}"}, chk_crypt, hash_crypt },
+# if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
{ {sizeof("{UNIX}")-1, "{UNIX}"}, chk_unix, NULL },
+# endif
#endif
#ifdef SLAPD_CLEARTEXT
}
-struct berval * lutil_passwd_generate(
+struct berval * lutil_passwd_generate( ber_len_t len )
+{
+ struct berval *pw;
+
+ if( len < 1 ) return NULL;
+
+ pw = ber_memalloc( sizeof( struct berval ) );
+ if( pw == NULL ) return NULL;
+
+ pw->bv_len = len;
+ pw->bv_val = ber_memalloc( len + 1 );
+
+ if( pw->bv_val == NULL ) {
+ ber_memfree( pw );
+ return NULL;
+ }
+
+ if( lutil_entropy( pw->bv_val, pw->bv_len) < 0 ) {
+ ber_bvfree( pw );
+ return NULL;
+ }
+
+ for( len = 0; len < pw->bv_len; len++ ) {
+ pw->bv_val[len] = crypt64[
+ pw->bv_val[len] % (sizeof(crypt64)-1) ];
+ }
+
+ pw->bv_val[len] = '\0';
+
+ return pw;
+}
+
+struct berval * lutil_passwd_hash(
const struct berval * passwd,
const char * method )
{
const struct pw_scheme *sc = get_scheme( method );
if( sc == NULL ) return NULL;
- if( ! sc->gen_fn ) return NULL;
+ if( ! sc->hash_fn ) return NULL;
- return (sc->gen_fn)( sc, passwd );
+ return (sc->hash_fn)( sc, passwd );
}
static struct berval * pw_string(
string.bv_val, string.bv_len,
&b64->bv_val[sc->name.bv_len], b64len );
- b64->bv_val[b64->bv_len] = '\0';
-
if( salt ) ber_memfree( string.bv_val );
-
+
if( rc < 0 ) {
ber_bvfree( b64 );
return NULL;
}
+ /* recompute length */
+ b64->bv_len = sc->name.bv_len + rc;
+ assert( strlen(b64->bv_val) == b64->bv_len );
return b64;
}
int rc;
unsigned char *orig_pass = NULL;
- /* base64 un-encode password */
+ /* decode base64 password */
orig_pass = (unsigned char *) ber_memalloc( (size_t) (
LUTIL_BASE64_DECODE_LEN(passwd->bv_len) + 1) );
if(rc < 0) {
ber_memfree(orig_pass);
- return 1;
+ return -1;
}
/* hash credentials with salt */
/* compare */
rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
ber_memfree(orig_pass);
- return rc;
+ return rc ? 1 : 0;
}
static int chk_sha1(
if( rc != sizeof(SHA1digest) ) {
ber_memfree(orig_pass);
- return 1;
+ return -1;
}
/* hash credentials with salt */
/* compare */
rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
ber_memfree(orig_pass);
- return rc;
+ return rc ? 1 : 0;
}
static int chk_smd5(
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if ( rc < 0 ) {
ber_memfree(orig_pass);
- return 1;
+ return -1;
}
/* hash credentials with salt */
/* compare */
rc = memcmp((char *)orig_pass, (char *)MD5digest, sizeof(MD5digest));
ber_memfree(orig_pass);
- return rc;
+ return rc ? 1 : 0;
}
static int chk_md5(
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if ( rc != sizeof(MD5digest) ) {
ber_memfree(orig_pass);
- return 1;
+ return -1;
}
/* hash credentials with salt */
/* compare */
rc = memcmp((char *)orig_pass, (char *)MD5digest, sizeof(MD5digest));
ber_memfree(orig_pass);
- return rc;
+ return rc ? 1 : 0;
}
-#ifdef SLAPD_CRYPT
-static int chk_crypt(
+#ifdef SLAPD_SPASSWD
+#ifdef HAVE_CYRUS_SASL
+sasl_conn_t *lutil_passwd_sasl_conn = NULL;
+#endif
+
+static int chk_sasl(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
- return strcmp(passwd, crypt(cred, passwd));
+ int i;
+ int rtn;
+
+ for( i=0; i<cred->bv_len; i++) {
+ if(cred->bv_val[i] == '\0') {
+ return 1; /* NUL character in password */
+ }
+ }
+
+ if( cred->bv_val[i] != '\0' ) {
+ return 1; /* cred must behave like a string */
+ }
+
+ for( i=0; i<passwd->bv_len; i++) {
+ if(passwd->bv_val[i] == '\0') {
+ return 1; /* NUL character in password */
+ }
+ }
+
+ if( passwd->bv_val[i] != '\0' ) {
+ return 1; /* passwd must behave like a string */
+ }
+
+ rtn = 1;
+
+#ifdef HAVE_CYRUS_SASL
+ if( lutil_passwd_sasl_conn != NULL ) {
+ const char *errstr = NULL;
+ int sc;
+
+ sc = sasl_checkpass( lutil_passwd_sasl_conn,
+ passwd->bv_val, passwd->bv_len,
+ cred->bv_val, cred->bv_len,
+ &errstr );
+
+ rtn = ( sc != SASL_OK );
+ }
+#endif
+
+ return rtn;
}
+#endif
-# if defined( HAVE_GETSPNAM ) \
- || ( defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD ) )
-static int chk_unix(
+#ifdef SLAPD_KPASSWD
+static int chk_kerberos(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
int i;
- char *pw;
+ int rtn;
for( i=0; i<cred->bv_len; i++) {
if(cred->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
+
if( cred->bv_val[i] != '\0' ) {
return 1; /* cred must behave like a string */
}
-# ifdef HAVE_GETSPNAM
+ for( i=0; i<passwd->bv_len; i++) {
+ if(passwd->bv_val[i] == '\0') {
+ return 1; /* NUL character in password */
+ }
+ }
+
+ if( passwd->bv_val[i] != '\0' ) {
+ return 1; /* passwd must behave like a string */
+ }
+
+ rtn = 1;
+
+#ifdef HAVE_KRB5 /* HAVE_HEIMDAL_KRB5 */
+ {
+/* Portions:
+ * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska H\xf6gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+ krb5_context context;
+ krb5_error_code ret;
+ krb5_creds creds;
+ krb5_get_init_creds_opt get_options;
+ krb5_verify_init_creds_opt verify_options;
+ krb5_principal client, server;
+#ifdef notdef
+ krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
+#endif
+
+ ret = krb5_init_context( &context );
+ if (ret) {
+ return 1;
+ }
+
+#ifdef notdef
+ krb5_get_init_creds_opt_set_preauth_list(&get_options,
+ pre_auth_types, 1);
+#endif
+
+ krb5_get_init_creds_opt_init( &get_options );
+
+ krb5_verify_init_creds_opt_init( &verify_options );
+
+ ret = krb5_parse_name( context, passwd->bv_val, &client );
+
+ if (ret) {
+ krb5_free_context( context );
+ return 1;
+ }
+
+ ret = krb5_get_init_creds_password( context,
+ &creds, client, cred->bv_val, NULL,
+ NULL, 0, NULL, &get_options );
+
+ if (ret) {
+ krb5_free_principal( context, client );
+ krb5_free_context( context );
+ return 1;
+ }
+
+ {
+ char host[MAXHOSTNAMELEN];
+
+ if( gethostname( host, MAXHOSTNAMELEN ) != 0 ) {
+ krb5_free_principal( context, client );
+ krb5_free_context( context );
+ return 1;
+ }
+
+ ret = krb5_sname_to_principal( context,
+ host, "ldap", KRB5_NT_SRV_HST, &server );
+ }
+
+ if (ret) {
+ krb5_free_principal( context, client );
+ krb5_free_context( context );
+ return 1;
+ }
+
+ ret = krb5_verify_init_creds( context,
+ &creds, server, NULL, NULL, &verify_options );
+
+ krb5_free_principal( context, client );
+ krb5_free_principal( context, server );
+ krb5_free_creds_contents( context, &creds );
+ krb5_free_context( context );
+
+ rtn = !!ret;
+ }
+#elif defined(HAVE_KRB4)
{
- struct spwd *spwd = getspnam(p);
+ /* Borrowed from Heimdal kpopper */
+/* Portions:
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved. The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+ int status;
+ char lrealm[REALM_SZ];
+ char tkt[MAXHOSTNAMELEN];
+
+ status = krb_get_lrealm(lrealm,1);
+ if (status == KFAILURE) {
+ return 1;
+ }
+
+ snprintf(tkt, sizeof(tkt), "%s_slapd.%u",
+ TKT_ROOT, (unsigned)getpid());
+ krb_set_tkt_string (tkt);
+
+ status = krb_verify_user( passwd->bv_val, "", lrealm,
+ cred->bv_val, 1, "ldap");
+
+ dest_tkt(); /* no point in keeping the tickets */
+
+ return status == KFAILURE;
+ }
+#endif
+
+ return rtn;
+}
+#endif /* SLAPD_KPASSWD */
+
+#ifdef SLAPD_CRYPT
+static int chk_crypt(
+ const struct pw_scheme *sc,
+ const struct berval * passwd,
+ const struct berval * cred )
+{
+ char *cr;
+ int i;
+
+ for( i=0; i<cred->bv_len; i++) {
+ if(cred->bv_val[i] == '\0') {
+ return 1; /* NUL character in password */
+ }
+ }
+
+ if( cred->bv_val[i] != '\0' ) {
+ return -1; /* cred must behave like a string */
+ }
+
+ if( passwd->bv_len < 2 ) {
+ return -1; /* passwd must be at least two characters long */
+ }
- if(spwd == NULL) {
- return 1; /* not found */
+ for( i=0; i<passwd->bv_len; i++) {
+ if(passwd->bv_val[i] == '\0') {
+ return -1; /* NUL character in password */
}
+ }
- pw = spwd->sp_pwdp;
+ if( passwd->bv_val[i] != '\0' ) {
+ return -1; /* passwd must behave like a string */
+ }
+
+ cr = crypt( cred->bv_val, passwd->bv_val );
+
+ if( cr == NULL || cr[0] == '\0' ) {
+ /* salt must have been invalid */
+ return -1;
+ }
+
+ return strcmp( passwd->bv_val, cr ) ? 1 : 0;
+}
+
+# if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
+static int chk_unix(
+ const struct pw_scheme *sc,
+ const struct berval * passwd,
+ const struct berval * cred )
+{
+ int i;
+ char *pw,*cr;
+
+ for( i=0; i<cred->bv_len; i++) {
+ if(cred->bv_val[i] == '\0') {
+ return -1; /* NUL character in password */
+ }
+ }
+ if( cred->bv_val[i] != '\0' ) {
+ return -1; /* cred must behave like a string */
+ }
+
+ for( i=0; i<passwd->bv_len; i++) {
+ if(passwd->bv_val[i] == '\0') {
+ return -1; /* NUL character in password */
+ }
+ }
+
+ if( passwd->bv_val[i] != '\0' ) {
+ return -1; /* passwd must behave like a string */
}
-# else
{
- struct passwd *pwd = getpwnam(p);
+ struct passwd *pwd = getpwnam(passwd->bv_val);
if(pwd == NULL) {
- return 1; /* not found */
+ return -1; /* not found */
}
pw = pwd->pw_passwd;
}
+# ifdef HAVE_GETSPNAM
+ {
+ struct spwd *spwd = getspnam(passwd->bv_val);
+
+ if(spwd != NULL) {
+ pw = spwd->sp_pwdp;
+ }
+ }
+# endif
+# ifdef HAVE_AIX_SECURITY
+ {
+ struct userpw *upw = getuserpw(passwd->bv_val);
+
+ if (upw != NULL) {
+ pw = upw->upw_passwd;
+ }
+ }
# endif
- if( pw == NULL || *pw == '\0' ) return 1;
+ if( pw == NULL || pw[0] == '\0' || pw[1] == '\0' ) {
+ /* password must must be at least two characters long */
+ return -1;
+ }
+
+ cr = crypt(cred->bv_val, pw);
- return strcmp(pw, crypt(cred->bv_val, pw));
+ if( cr == NULL || cr[0] == '\0' ) {
+ /* salt must have been invalid */
+ return -1;
+ }
+
+ return strcmp(pw, cr) ? 1 : 0;
}
# endif
#endif
-/* PASSWORD CHECK ROUTINES */
-static struct berval *gen_ssha1(
+/* PASSWORD GENERATION ROUTINES */
+
+static struct berval *hash_ssha1(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
return pw_string64( scheme, &digest, &salt);
}
-static struct berval *gen_sha1(
+static struct berval *hash_sha1(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
return pw_string64( scheme, &digest, NULL);
}
-static struct berval *gen_smd5(
+static struct berval *hash_smd5(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
return pw_string64( scheme, &digest, &salt );
}
-static struct berval *gen_md5(
+static struct berval *hash_md5(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
}
#ifdef SLAPD_CRYPT
-static struct berval *gen_crypt(
+static struct berval *hash_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
- static const unsigned char crypt64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./";
+ struct berval hash;
+ unsigned char salt[3];
+ int i;
+
+ for( i=0; i<passwd->bv_len; i++) {
+ if(passwd->bv_val[i] == '\0') {
+ return NULL; /* NUL character in password */
+ }
+ }
- char *hash = NULL;
- unsigned char salt[2];
+ if( passwd->bv_val[i] != '\0' ) {
+ return NULL; /* passwd must behave like a string */
+ }
if( lutil_entropy( salt, sizeof(salt)) < 0 ) {
return NULL;
salt[0] = crypt64[ salt[0] % (sizeof(crypt64)-1) ];
salt[1] = crypt64[ salt[1] % (sizeof(crypt64)-1) ];
+ salt[2] = '\0';
+
+ hash.bv_val = crypt( passwd->bv_val, salt );
- hash = crypt( passwd, salt );
+ if( hash.bv_val == NULL ) return NULL;
- if( hash = NULL ) return NULL;
+ hash.bv_len = strlen( hash.bv_val );
+
+ if( hash.bv_len == 0 ) {
+ return NULL;
+ }
- return pw_string( scheme, hash );
+ return pw_string( scheme, &hash );
}
#endif
projects / openldap / blobdiff