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[openldap] / servers / slapd / passwd.c
index 5b9fcf61b730fff80cff3c15381da5e1e847accb..a262a9911aa74009a485b084d9ad4139f9e2d982 100644 (file)
@@ -2,7 +2,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 1998-2004 The OpenLDAP Foundation.
+ * Copyright 1998-2005 The OpenLDAP Foundation.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -27,6 +27,7 @@
 
 #include <lber_pvt.h>
 #include <lutil.h>
+#include <lutil_sha1.h>
 
 static const char *defhash[] = {
 #ifdef LUTIL_SHA1_BYTES
@@ -43,12 +44,14 @@ int passwd_extop(
 {
        struct berval id = {0, NULL}, hash, *rsp = NULL;
        req_pwdexop_s *qpw = &op->oq_pwdexop;
+       req_extended_s qext = op->oq_extended;
        Modifications *ml;
-       Operation op2;
        slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
        slap_callback cb2 = { NULL, slap_replog_cb, NULL, NULL };
        int i, nhash;
        char **hashes;
+       int     rc;
+       BackendDB *op_be;
 
        cb2.sc_next = &cb;
 
@@ -72,17 +75,19 @@ int passwd_extop(
        }
 
        if ( id.bv_len ) {
-               op->o_req_dn = id;
+               ber_dupbv_x( &op->o_req_dn, &id, op->o_tmpmemctx );
                /* ndn is in tmpmem, so we don't need to free it */
                rs->sr_err = dnNormalize( 0, NULL, NULL, &id, &op->o_req_ndn, op->o_tmpmemctx );
                if ( rs->sr_err != LDAP_SUCCESS ) {
                        rs->sr_text = "Invalid DN";
-                       return rs->sr_err;
+                       rc = rs->sr_err;
+                       goto error_return;
                }
-               op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
+               op->o_bd = select_backend( &op->o_req_ndn, 0, 1 );
+
        } else {
-               op->o_req_dn = op->o_dn;
-               op->o_req_ndn = op->o_ndn;
+               ber_dupbv_x( &op->o_req_dn, &op->o_dn, op->o_tmpmemctx );
+               ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
                ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
                op->o_bd = op->o_conn->c_authz_backend;
                ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
@@ -90,42 +95,61 @@ int passwd_extop(
 
        if( op->o_bd == NULL ) {
 #ifdef HAVE_CYRUS_SASL
-               return slap_sasl_setpass( op, rs );
+               rc = slap_sasl_setpass( op, rs );
 #else
                rs->sr_text = "no authz backend";
-               return LDAP_OTHER;
+               rc = LDAP_OTHER;
 #endif
+               goto error_return;
        }
 
        if ( op->o_req_ndn.bv_len == 0 ) {
                rs->sr_text = "no password is associated with the Root DSE";
-               return LDAP_UNWILLING_TO_PERFORM;
+               rc = LDAP_UNWILLING_TO_PERFORM;
+               goto error_return;
+       }
+
+       /* If we've got a glued backend, check the real backend */
+       op_be = op->o_bd;
+       if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
+               op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
        }
 
        if (backend_check_restrictions( op, rs,
                        (struct berval *)&slap_EXOP_MODIFY_PASSWD ) != LDAP_SUCCESS) {
-               return rs->sr_err;
+               rc = rs->sr_err;
+               goto error_return;
        }
 
+       /* check for referrals */
+       if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
+               rc = rs->sr_err;
+               goto error_return;
+       }
 
 #ifndef SLAPD_MULTIMASTER
        /* This does not apply to multi-master case */
-       if( op->o_bd->be_update_ndn.bv_len ) {
+       if(!( !SLAP_SHADOW( op->o_bd ) || be_isupdate( op ))) {
                /* we SHOULD return a referral in this case */
-               BerVarray defref = NULL;
-               if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
-                       syncinfo_t *si;
-                       LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
-                               struct berval tmpbv;
-                               ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
-                               ber_bvarray_add( &defref, &tmpbv );
-                       }
-               } else {
-                       defref = referral_rewrite( op->o_bd->be_update_refs,
+               BerVarray defref = op->o_bd->be_update_refs
+                       ? op->o_bd->be_update_refs : default_referral; 
+
+               if( defref != NULL ) {
+                       rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
                                NULL, NULL, LDAP_SCOPE_DEFAULT );
+                       if(rs->sr_ref) {
+                               rs->sr_flags |= REP_REF_MUSTBEFREED;
+                       } else {
+                               rs->sr_ref = defref;
+                       }
+                       rc = LDAP_REFERRAL;
+                       goto error_return;
+
                }
-               rs->sr_ref = defref;
-               return LDAP_REFERRAL;
+
+               rs->sr_text = "shadow context; no update referral";
+               rc = LDAP_UNWILLING_TO_PERFORM;
+               goto error_return;
        }
 #endif /* !SLAPD_MULTIMASTER */
 
@@ -138,22 +162,27 @@ int passwd_extop(
        }
        if ( qpw->rs_new.bv_len == 0 ) {
                rs->sr_text = "password generation failed";
-               return LDAP_OTHER;
+               rc = LDAP_OTHER;
+               goto error_return;
        }
 
+       op->o_bd = op_be;
+
        /* Give the backend a chance to handle this itself */
        if ( op->o_bd->be_extended ) {
                rs->sr_err = op->o_bd->be_extended( op, rs );
                if ( rs->sr_err != LDAP_UNWILLING_TO_PERFORM &&
                        rs->sr_err != SLAP_CB_CONTINUE ) {
-                       return rs->sr_err;
+                       rc = rs->sr_err;
+                       goto error_return;
                }
        }
 
        /* The backend didn't handle it, so try it here */
        if( op->o_bd && !op->o_bd->be_modify ) {
                rs->sr_text = "operation not supported for current user";
-               return LDAP_UNWILLING_TO_PERFORM;
+               rc = LDAP_UNWILLING_TO_PERFORM;
+               goto error_return;
        }
 
        ml = ch_malloc( sizeof(Modifications) );
@@ -168,7 +197,7 @@ int passwd_extop(
        }
        ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
        for ( i=0; hashes[i]; i++ ) {
-               slap_passwd_hash( hashes[i], &qpw->rs_new, &hash, &rs->sr_text );
+               slap_passwd_hash_type( &qpw->rs_new, &hash, hashes[i], &rs->sr_text );
                if ( hash.bv_len == 0 ) {
                        if ( !rs->sr_text ) {
                                rs->sr_text = "password hash failed";
@@ -180,57 +209,53 @@ int passwd_extop(
        ml->sml_values[i].bv_val = NULL;
        ml->sml_nvalues = NULL;
        ml->sml_desc = slap_schema.si_ad_userPassword;
-       ml->sml_op = qpw->rs_old.bv_val ? LDAP_MOD_ADD : LDAP_MOD_REPLACE;
+       ml->sml_op = LDAP_MOD_REPLACE;
        ml->sml_next = qpw->rs_mods;
        qpw->rs_mods = ml;
-       if ( qpw->rs_old.bv_val ) {
-               ml = ch_malloc( sizeof(Modifications) );
-               ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
-               for ( i=0; hashes[i]; i++ ) {
-                       slap_passwd_hash( hashes[i], &qpw->rs_old, &hash, &rs->sr_text );
-                       if ( hash.bv_len == 0 ) {
-                               if ( !rs->sr_text ) {
-                                       rs->sr_text = "password hash failed";
-                               }
-                               break;
-                       }
-                       ml->sml_values[i] = hash;
-               }
-               ml->sml_values[i].bv_val = NULL;
-               ml->sml_desc = slap_schema.si_ad_userPassword;
-               ml->sml_op = LDAP_MOD_DELETE;
-               ml->sml_next = qpw->rs_mods;
-               qpw->rs_mods = ml;
-       }
+
        if ( hashes[i] ) {
                rs->sr_err = LDAP_OTHER;
+
        } else {
+               slap_callback *sc = op->o_callback;
 
-               op2 = *op;
-               op2.o_tag = LDAP_REQ_MODIFY;
-               op2.o_callback = &cb2;
-               op2.orm_modlist = qpw->rs_mods;
+               op->o_tag = LDAP_REQ_MODIFY;
+               op->o_callback = &cb2;
+               op->orm_modlist = qpw->rs_mods;
                cb2.sc_private = qpw;   /* let Modify know this was pwdMod,
                                         * if it cares... */
 
-               rs->sr_err = slap_mods_opattrs( &op2, ml, qpw->rs_modtail, &rs->sr_text,
-                       NULL, 0 );
+               rs->sr_err = slap_mods_opattrs( op, ml, qpw->rs_modtail, &rs->sr_text,
+                       NULL, 0, 1 );
                
                if ( rs->sr_err == LDAP_SUCCESS ) {
-                       rs->sr_err = op2.o_bd->be_modify( &op2, rs );
+                       rs->sr_err = op->o_bd->be_modify( op, rs );
                }
                if ( rs->sr_err == LDAP_SUCCESS ) {
                        rs->sr_rspdata = rsp;
                } else if ( rsp ) {
                        ber_bvfree( rsp );
                }
+               op->o_tag = LDAP_REQ_EXTENDED;
+               op->o_callback = sc;
        }
        slap_mods_free( qpw->rs_mods );
        if ( rsp ) {
                free( qpw->rs_new.bv_val );
        }
 
-       return rs->sr_err;
+       rc = rs->sr_err;
+       op->oq_extended = qext;
+
+error_return:;
+       if ( !BER_BVISNULL( &op->o_req_dn ) ) {
+               op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
+       }
+       if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
+               op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+       }
+
+       return rc;
 }
 
 int slap_passwd_parse( struct berval *reqdata,
@@ -260,13 +285,8 @@ int slap_passwd_parse( struct berval *reqdata,
        tag = ber_scanf( ber, "{" /*}*/ );
 
        if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "slap_passwd_parse: decoding error\n", 0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_TRACE,
                        "slap_passwd_parse: decoding error\n", 0, 0, 0 );
-#endif
                rc = LDAP_PROTOCOL_ERROR;
                goto done;
        }
@@ -274,13 +294,8 @@ int slap_passwd_parse( struct berval *reqdata,
        tag = ber_peek_tag( ber, &len );
        if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
                if( id == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse: ID not allowed.\n", 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID not allowed.\n",
                                0, 0, 0 );
-#endif
 
                        *text = "user must change own password";
                        rc = LDAP_UNWILLING_TO_PERFORM;
@@ -290,13 +305,8 @@ int slap_passwd_parse( struct berval *reqdata,
                tag = ber_scanf( ber, "m", id );
 
                if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse:  ID parse failed.\n", 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
                                0, 0, 0 );
-#endif
 
                        goto decoding_error;
                }
@@ -306,13 +316,8 @@ int slap_passwd_parse( struct berval *reqdata,
 
        if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_OLD ) {
                if( oldpass == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse: OLD not allowed.\n" , 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD not allowed.\n",
                                0, 0, 0 );
-#endif
 
                        *text = "use bind to verify old password";
                        rc = LDAP_UNWILLING_TO_PERFORM;
@@ -322,13 +327,8 @@ int slap_passwd_parse( struct berval *reqdata,
                tag = ber_scanf( ber, "m", oldpass );
 
                if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse:  ID parse failed.\n" , 0, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
+                       Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n",
                                0, 0, 0 );
-#endif
 
                        goto decoding_error;
                }
@@ -338,13 +338,8 @@ int slap_passwd_parse( struct berval *reqdata,
 
        if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_NEW ) {
                if( newpass == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse:  NEW not allowed.\n", 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW not allowed.\n",
                                0, 0, 0 );
-#endif
 
                        *text = "user specified passwords disallowed";
                        rc = LDAP_UNWILLING_TO_PERFORM;
@@ -354,13 +349,8 @@ int slap_passwd_parse( struct berval *reqdata,
                tag = ber_scanf( ber, "m", newpass );
 
                if( tag == LBER_ERROR ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( OPERATION, ERR,
-                          "slap_passwd_parse:  OLD parse failed.\n", 0, 0, 0 );
-#else
-                       Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n",
+                       Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW parse failed.\n",
                                0, 0, 0 );
-#endif
 
                        goto decoding_error;
                }
@@ -370,14 +360,9 @@ int slap_passwd_parse( struct berval *reqdata,
 
        if( len != 0 ) {
 decoding_error:
-#ifdef NEW_LOGGING
-               LDAP_LOG( OPERATION, ERR, 
-                       "slap_passwd_parse: decoding error, len=%ld\n", (long)len, 0, 0 );
-#else
                Debug( LDAP_DEBUG_TRACE,
                        "slap_passwd_parse: decoding error, len=%ld\n",
                        (long) len, 0, 0 );
-#endif
 
                *text = "data decoding error";
                rc = LDAP_PROTOCOL_ERROR;
@@ -398,13 +383,8 @@ struct berval * slap_passwd_return(
 
        assert( cred != NULL );
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, 
-               "slap_passwd_return: %ld\n",(long)cred->bv_len, 0, 0 );
-#else
        Debug( LDAP_DEBUG_TRACE, "slap_passwd_return: %ld\n",
                (long) cred->bv_len, 0, 0 );
-#endif
        
        ber_init_w_nullc( ber, LBER_USE_DER );
 
@@ -420,25 +400,37 @@ struct berval * slap_passwd_return(
        return bv;
 }
 
+/*
+ * if "e" is provided, access to each value of the password is checked first
+ */
 int
 slap_passwd_check(
-       Connection *conn,
-       Attribute *a,
-       struct berval *cred,
-       const char **text )
+       Operation       *op,
+       Entry           *e,
+       Attribute       *a,
+       struct berval   *cred,
+       const char      **text )
 {
-       int result = 1;
-       struct berval *bv;
+       int                     result = 1;
+       struct berval           *bv;
+       AccessControlState      acl_state = ACL_STATE_INIT;
 
 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
        ldap_pvt_thread_mutex_lock( &passwd_mutex );
 #ifdef SLAPD_SPASSWD
-       lutil_passwd_sasl_conn = conn->c_sasl_authctx;
+       lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx;
 #endif
 #endif
 
        for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
-               if( !lutil_passwd( bv, cred, NULL, text ) ) {
+               /* if e is provided, check access */
+               if ( e && access_allowed( op, e, a->a_desc, bv,
+                                       ACL_AUTH, &acl_state ) == 0 )
+               {
+                       continue;
+               }
+               
+               if ( !lutil_passwd( bv, cred, NULL, text ) ) {
                        result = 0;
                        break;
                }
@@ -457,11 +449,7 @@ slap_passwd_check(
 void
 slap_passwd_generate( struct berval *pass )
 {
-#ifdef NEW_LOGGING
-       LDAP_LOG( OPERATION, ENTRY, "slap_passwd_generate: begin\n", 0, 0, 0 );
-#else
        Debug( LDAP_DEBUG_TRACE, "slap_passwd_generate\n", 0, 0, 0 );
-#endif
        pass->bv_val = NULL;
        pass->bv_len = 0;
 
@@ -473,23 +461,16 @@ slap_passwd_generate( struct berval *pass )
 }
 
 void
-slap_passwd_hash(
-       char *hash,
+slap_passwd_hash_type(
        struct berval * cred,
        struct berval * new,
+       char *hash,
        const char **text )
 {
        new->bv_len = 0;
        new->bv_val = NULL;
 
-       if ( !hash ) {
-               if ( default_passwd_hash ) {
-                       hash = default_passwd_hash[0];
-               }
-               if ( !hash ) {
-                       hash = (char *)defhash[0];
-               }
-       }
+       assert( hash );
 
 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
        ldap_pvt_thread_mutex_lock( &passwd_mutex );
@@ -502,3 +483,19 @@ slap_passwd_hash(
 #endif
 
 }
+void
+slap_passwd_hash(
+       struct berval * cred,
+       struct berval * new,
+       const char **text )
+{
+       char *hash = NULL;
+       if ( default_passwd_hash ) {
+               hash = default_passwd_hash[0];
+       }
+       if ( !hash ) {
+               hash = (char *)defhash[0];
+       }
+
+       slap_passwd_hash_type( cred, new, hash, text );
+}