]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/modify.c
Add a sample ACL
[openldap] / servers / slapd / modify.c
index c245a54c62b3c67f537bd970be3a61fdfce4b828..a00e54dc674491d6e5d75ef7ac8027f64274458a 100644 (file)
@@ -1,3 +1,8 @@
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
 /*
  * Copyright (c) 1995 Regents of the University of Michigan.
  * All rights reserved.
 #include <ac/string.h>
 #include <ac/time.h>
 
+#include "ldap_pvt.h"
 #include "slap.h"
 
-static void    modlist_free(LDAPModList *ml);
 
 int
 do_modify(
     Connection *conn,
-    Operation  *op
-)
+    Operation  *op )
 {
-       char            *ndn;
+       char            *dn, *ndn = NULL;
        char            *last;
        ber_tag_t       tag;
        ber_len_t       len;
-       LDAPModList     *modlist;
-       LDAPModList     **modtail;
+       LDAPModList     *modlist = NULL;
+       LDAPModList     **modtail = &modlist;
 #ifdef LDAP_DEBUG
        LDAPModList *tmp;
 #endif
+       Modifications *mods = NULL;
        Backend         *be;
        int rc;
+       const char      *text;
+       int manageDSAit;
 
+#ifdef NEW_LOGGING
+       LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
+                  "do_modify: enter\n" ));
+#else
        Debug( LDAP_DEBUG_TRACE, "do_modify\n", 0, 0, 0 );
-
-       if( op->o_bind_in_progress ) {
-               Debug( LDAP_DEBUG_ANY, "do_modify: SASL bind in progress.\n",
-                       0, 0, 0 );
-               send_ldap_result( conn, op, LDAP_SASL_BIND_IN_PROGRESS, NULL,
-                   "SASL bind in progress" );
-               return LDAP_SASL_BIND_IN_PROGRESS;
-       }
+#endif
 
        /*
         * Parse the modify request.  It looks like this:
@@ -69,19 +73,28 @@ do_modify(
         *      }
         */
 
-       if ( ber_scanf( op->o_ber, "{a" /*}*/, &ndn ) == LBER_ERROR ) {
-               Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
-               send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL, "" );
-               return rc;
+       if ( ber_scanf( op->o_ber, "{a" /*}*/, &dn ) == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                          "do_modify: ber_scanf failed\n" ));
+#else
+               Debug( LDAP_DEBUG_ANY, "do_modify: ber_scanf failed\n", 0, 0, 0 );
+#endif
+
+               send_ldap_disconnect( conn, op,
+                       LDAP_PROTOCOL_ERROR, "decoding error" );
+               return SLAPD_DISCONNECT;
        }
 
-       Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", ndn, 0, 0 );
+#ifdef NEW_LOGGING
+       LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
+                  "do_modify: dn (%s)\n", dn ));
+#else
+       Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", dn, 0, 0 );
+#endif
 
-       (void) dn_normalize_case( ndn );
 
        /* collect modifications & save for later */
-       modlist = NULL;
-       modtail = &modlist;
 
        for ( tag = ber_first_element( op->o_ber, &len, &last );
            tag != LBER_DEFAULT;
@@ -95,80 +108,156 @@ do_modify(
                    &(*modtail)->ml_type, &(*modtail)->ml_bvalues )
                    == LBER_ERROR )
                {
-                       send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL,
-                           "decoding error" );
-                       free( ndn );
-                       free( *modtail );
-                       *modtail = NULL;
-                       modlist_free( modlist );
-                       return rc;
+                       send_ldap_disconnect( conn, op,
+                               LDAP_PROTOCOL_ERROR, "decoding modlist error" );
+                       rc = SLAPD_DISCONNECT;
+                       goto cleanup;
                }
 
-               (*modtail)->ml_op = mop;
-               
-               if ( (*modtail)->ml_op != LDAP_MOD_ADD &&
-                   (*modtail)->ml_op != LDAP_MOD_DELETE &&
-                   (*modtail)->ml_op != LDAP_MOD_REPLACE )
-               {
-                       send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL,
-                           "unrecognized modify operation" );
-                       free( ndn );
-                       modlist_free( modlist );
-                       return rc;
-               }
+               switch( mop ) {
+               case LDAP_MOD_ADD:
+                       if ( (*modtail)->ml_bvalues == NULL ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                                          "do_modify: modify/add operation (%ld) requires values\n",
+                                          (long)mop ));
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "do_modify: modify/add operation (%ld) requires values\n",
+                                       (long) mop, 0, 0 );
+#endif
 
-               if ( (*modtail)->ml_bvalues == NULL
-                       && (*modtail)->ml_op != LDAP_MOD_DELETE )
-               {
-                       send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL,
-                           "no values given" );
-                       free( ndn );
-                       modlist_free( modlist );
-                       return rc;
+                               send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR,
+                                       NULL, "modify/add operation requires values",
+                                       NULL, NULL );
+                               rc = LDAP_PROTOCOL_ERROR;
+                               goto cleanup;
+                       }
+
+                       /* fall through */
+
+               case LDAP_MOD_DELETE:
+               case LDAP_MOD_REPLACE:
+                       break;
+
+               default: {
+#ifdef NEW_LOGGING
+                               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                                          "do_modify: invalid modify operation (%ld)\n",
+                                          (long)mop ));
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                       "do_modify: invalid modify operation (%ld)\n",
+                                       (long) mop, 0, 0 );
+#endif
+
+                               send_ldap_result( conn, op, LDAP_PROTOCOL_ERROR,
+                                       NULL, "unrecognized modify operation", NULL, NULL );
+                               rc = LDAP_PROTOCOL_ERROR;
+                               goto cleanup;
+                       }
                }
-               attr_normalize( (*modtail)->ml_type );
 
+               (*modtail)->ml_op = mop;
                modtail = &(*modtail)->ml_next;
        }
        *modtail = NULL;
 
+       if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                          "do_modify: get_ctrls failed\n" ));
+#else
+               Debug( LDAP_DEBUG_ANY, "do_modify: get_ctrls failed\n", 0, 0, 0 );
+#endif
+
+               goto cleanup;
+       }
+
+       ndn = ch_strdup( dn );
+
+       if(     dn_normalize( ndn ) == NULL ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                          "do_modify:  invalid dn (%s)\n", dn ));
+#else
+               Debug( LDAP_DEBUG_ANY, "do_modify: invalid dn (%s)\n", dn, 0, 0 );
+#endif
+
+               send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
+                   "invalid DN", NULL, NULL );
+               goto cleanup;
+       }
+
+       if( *ndn == '\0' ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
+                          "do_modify: attempt to modify root DSE.\n" ));
+#else
+               Debug( LDAP_DEBUG_ANY, "do_modify: root dse!\n", 0, 0, 0 );
+#endif
+
+               send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
+                       NULL, "modify upon the root DSE not supported", NULL, NULL );
+               goto cleanup;
+       }
+
 #ifdef LDAP_DEBUG
+#ifdef NEW_LOGGING
+       LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1,
+                  "do_modify: modifications:\n" ));
+#else
        Debug( LDAP_DEBUG_ARGS, "modifications:\n", 0, 0, 0 );
+#endif
+
        for ( tmp = modlist; tmp != NULL; tmp = tmp->ml_next ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1,
+                          "\t%s:  %s\n", tmp->ml_op == LDAP_MOD_ADD ?
+                          "add" : (tmp->ml_op == LDAP_MOD_DELETE ?
+                                   "delete" : "replace"), tmp->ml_type ));
+#else
                Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
                        tmp->ml_op == LDAP_MOD_ADD
                                ? "add" : (tmp->ml_op == LDAP_MOD_DELETE
                                        ? "delete" : "replace"), tmp->ml_type, 0 );
-       }
 #endif
 
-#ifdef  GET_CTRLS
-       if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
-               free( ndn );
-               modlist_free( modlist );
-               Debug( LDAP_DEBUG_ANY, "do_modify: get_ctrls failed\n", 0, 0, 0 );
-               return rc;
-       } 
+       }
 #endif
 
-       Statslog( LDAP_DEBUG_STATS, "conn=%d op=%d MOD dn=\"%s\"\n",
-           conn->c_connid, op->o_opid, ndn, 0, 0 );
+       Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d MOD dn=\"%s\"\n",
+           op->o_connid, op->o_opid, dn, 0, 0 );
+
+       manageDSAit = get_manageDSAit( op );
 
        /*
         * We could be serving multiple database backends.  Select the
         * appropriate one, or send a referral to our "referral server"
         * if we don't hold it.
         */
-       if ( (be = select_backend( ndn )) == NULL ) {
-               free( ndn );
-               modlist_free( modlist );
-               send_ldap_result( conn, op, rc = LDAP_PARTIAL_RESULTS, NULL,
-                   default_referral );
-               return rc;
+       if ( (be = select_backend( ndn, manageDSAit )) == NULL ) {
+               send_ldap_result( conn, op, rc = LDAP_REFERRAL,
+                       NULL, NULL, default_referral, NULL );
+               goto cleanup;
        }
 
-       /* alias suffix if approp */
-       ndn = suffixAlias ( ndn, op, be );
+       /* check restrictions */
+       rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
+       if( rc != LDAP_SUCCESS ) {
+               send_ldap_result( conn, op, rc,
+                       NULL, text, NULL, NULL );
+               goto cleanup;
+       }
+
+       /* check for referrals */
+       rc = backend_check_referrals( be, conn, op, dn, ndn );
+       if ( rc != LDAP_SUCCESS ) {
+               goto cleanup;
+       }
+
+       /* deref suffix alias if appropriate */
+       ndn = suffix_alias( be, ndn );
 
        /*
         * do the modify if 1 && (2 || 3)
@@ -178,42 +267,301 @@ do_modify(
         */
        if ( be->be_modify ) {
                /* do the update here */
-               if ( be->be_update_ndn == NULL ||
-                       strcmp( be->be_update_ndn, op->o_ndn ) == 0 )
+               int repl_user = (be->be_update_ndn != NULL &&
+                       strcmp( be->be_update_ndn, op->o_ndn ) == 0);
+#ifndef SLAPD_MULTIMASTER
+               /* Multimaster slapd does not have to check for replicator dn
+                * because it accepts each modify request
+                */
+               if ( be->be_update_ndn == NULL || repl_user )
+#endif
                {
-                       if ( (*be->be_modify)( be, conn, op, ndn, modlist ) == 0 ) {
-                               replog( be, LDAP_REQ_MODIFY, ndn, modlist, 0 );
+                       int update = be->be_update_ndn != NULL;
+                       const char *text;
+                       char textbuf[SLAP_TEXT_BUFLEN];
+                       size_t textlen = sizeof textbuf;
+
+                       rc = slap_modlist2mods( modlist, update, &mods, &text,
+                               textbuf, textlen );
+
+                       if( rc != LDAP_SUCCESS ) {
+                               send_ldap_result( conn, op, rc,
+                                       NULL, text, NULL, NULL );
+                               goto cleanup;
                        }
 
+                       if ( (be->be_lastmod == ON || (be->be_lastmod == UNDEFINED &&
+                               global_lastmod == ON)) && !repl_user )
+                       {
+                               Modifications **modstail;
+                               for( modstail = &mods;
+                                       *modstail != NULL;
+                                       modstail = &(*modstail)->sml_next )
+                               {
+                                       /* empty */
+                               }
+                               rc = slap_mods_opattrs( op, modstail, &text );
+
+                               if( rc != LDAP_SUCCESS ) {
+                                       send_ldap_result( conn, op, rc,
+                                               NULL, text,
+                                               NULL, NULL );
+                                       goto cleanup;
+                               }
+                       }
+
+                       if ( (*be->be_modify)( be, conn, op, dn, ndn, mods ) == 0 
+#ifdef SLAPD_MULTIMASTER
+                               && !repl_user
+#endif
+                       ) {
+                               /* but we log only the ones not from a replicator user */
+                               replog( be, op, dn, mods );
+                       }
+
+#ifndef SLAPD_MULTIMASTER
                /* send a referral */
                } else {
-                       send_ldap_result( conn, op, rc = LDAP_PARTIAL_RESULTS, NULL,
-                           default_referral );
+                       send_ldap_result( conn, op, rc = LDAP_REFERRAL, NULL, NULL,
+                               be->be_update_refs ? be->be_update_refs : default_referral,
+                               NULL );
+#endif
                }
        } else {
-               send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM, NULL,
-                   "Function not implemented" );
+               send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
+                   NULL, "operation not supported within namingContext", NULL, NULL );
        }
 
-       free( ndn );
-       modlist_free( modlist );
+cleanup:
+       free( dn );
+       if( ndn != NULL ) free( ndn );
+       if ( modlist != NULL )
+               slap_modlist_free( modlist );
+       if ( mods != NULL )
+               slap_mods_free( mods );
        return rc;
 }
 
-static void
-modlist_free(
-    LDAPModList        *ml
-)
+/*
+ * convert a raw list of modifications to internal format
+ * Do basic attribute type checking and syntax validation.
+ */
+int slap_modlist2mods(
+       LDAPModList *ml,
+       int update,
+       Modifications **mods,
+       const char **text,
+       char *textbuf,
+       size_t textlen )
+{
+       int rc;
+       Modifications **modtail = mods;
+
+       for( ; ml != NULL; ml = ml->ml_next ) {
+               Modifications *mod;
+               AttributeDescription *ad = NULL;
+
+               mod = (Modifications *)
+                       ch_calloc( 1, sizeof(Modifications) );
+
+               /* copy the op */
+               mod->sml_op = ml->ml_op;
+
+               /* convert to attribute description */
+               rc = slap_str2ad( ml->ml_type, &mod->sml_desc, text );
+
+               if( rc != LDAP_SUCCESS ) {
+                       slap_mods_free( mod );
+                       snprintf( textbuf, textlen, "%s: %s",
+                               ml->ml_type, *text );
+                       *text = textbuf;
+                       return rc;
+               }
+
+               ad = mod->sml_desc;
+
+               if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
+                       && !slap_ad_is_binary( ad ))
+               {
+                       /* attribute requires binary transfer */
+                       slap_mods_free( mod );
+
+                       snprintf( textbuf, textlen,
+                               "%s: requires ;binary transfer",
+                               ml->ml_type );
+                       *text = textbuf;
+                       return LDAP_UNDEFINED_TYPE;
+               }
+
+               if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
+                       && slap_ad_is_binary( ad ))
+               {
+                       /* attribute requires binary transfer */
+                       slap_mods_free( mod );
+                       snprintf( textbuf, textlen,
+                               "%s: disallows ;binary transfer",
+                               ml->ml_type );
+                       *text = textbuf;
+                       return LDAP_UNDEFINED_TYPE;
+               }
+
+               if (!update && is_at_no_user_mod( ad->ad_type )) {
+                       /* user modification disallowed */
+                       slap_mods_free( mod );
+                       snprintf( textbuf, textlen,
+                               "%s: no user modification allowed",
+                               ml->ml_type );
+                       *text = textbuf;
+                       return LDAP_CONSTRAINT_VIOLATION;
+               }
+
+               if ( is_at_obsolete( ad->ad_type ) &&
+                       ( mod->sml_op == LDAP_MOD_ADD || ml->ml_bvalues != NULL ) )
+               {
+                       /*
+                        * attribute is obsolete,
+                        * only allow replace/delete with no values
+                        */
+                       slap_mods_free( mod );
+                       snprintf( textbuf, textlen,
+                               "%s: attribute is obsolete",
+                               ml->ml_type );
+                       *text = textbuf;
+                       return LDAP_CONSTRAINT_VIOLATION;
+               }
+
+               /*
+                * check values
+                */
+               if( ml->ml_bvalues != NULL ) {
+                       ber_len_t nvals;
+                       slap_syntax_validate_func *validate =
+                               ad->ad_type->sat_syntax->ssyn_validate;
+
+                       if( !validate ) {
+                               slap_mods_free( mod );
+                               *text = "no validator for syntax";
+                               snprintf( textbuf, textlen,
+                                       "%s: no validator for syntax %s",
+                                       ml->ml_type,
+                                       ad->ad_type->sat_syntax->ssyn_oid );
+                               *text = textbuf;
+                               return LDAP_INVALID_SYNTAX;
+                       }
+
+                       /*
+                        * check that each value is valid per syntax
+                        */
+                       for( nvals = 0; ml->ml_bvalues[nvals]; nvals++ ) {
+                               rc = validate( ad->ad_type->sat_syntax, ml->ml_bvalues[nvals] );
+
+                               if( rc != 0 ) {
+                                       slap_mods_free( mod );
+                                       snprintf( textbuf, textlen,
+                                               "%s: value #%ld invalid per syntax",
+                                               ml->ml_type, (long) nvals );
+                                       *text = textbuf;
+                                       return LDAP_INVALID_SYNTAX;
+                               }
+                       }
+
+                       /*
+                        * a rough single value check... an additional check is needed
+                        * to catch add of single value to existing single valued attribute
+                        */
+                       if( ( mod->sml_op == LDAP_MOD_ADD || mod->sml_op == LDAP_MOD_REPLACE )
+                               && nvals > 1 && is_at_single_value( ad->ad_type ))
+                       {
+                               slap_mods_free( mod );
+                               snprintf( textbuf, textlen,
+                                       "%s: multiple value provided",
+                                       ml->ml_type );
+                               *text = textbuf;
+                               return LDAP_CONSTRAINT_VIOLATION;
+                       }
+               }
+
+               mod->sml_bvalues = ml->ml_bvalues;
+               ml->ml_values = NULL;
+
+               *modtail = mod;
+               modtail = &mod->sml_next;
+       }
+
+       return LDAP_SUCCESS;
+}
+
+int slap_mods_opattrs(
+       Operation *op,
+       Modifications **modtail,
+       const char **text )
 {
-       LDAPModList *next;
+       struct berval name, timestamp;
+       time_t now = slap_get_time();
+       char timebuf[22];
+       struct tm *ltm;
+       Modifications *mod;
+
+       int mop = op->o_tag == LDAP_REQ_ADD
+               ? LDAP_MOD_ADD : LDAP_MOD_REPLACE;
 
-       for ( ; ml != NULL; ml = next ) {
-               next = ml->ml_next;
+       assert( modtail != NULL );
+       assert( *modtail == NULL );
 
-               free( ml->ml_type );
-               if ( ml->ml_bvalues != NULL )
-                       ber_bvecfree( ml->ml_bvalues );
+       ldap_pvt_thread_mutex_lock( &gmtime_mutex );
+       ltm = gmtime( &now );
+       strftime( timebuf, sizeof(timebuf), "%Y%m%d%H%M%SZ", ltm );
+       ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
+       timestamp.bv_val = timebuf;
+       timestamp.bv_len = strlen(timebuf);
 
-               free( ml );
+       if( op->o_dn == NULL || op->o_dn[0] == '\0' ) {
+               name.bv_val = SLAPD_ANONYMOUS;
+               name.bv_len = sizeof(SLAPD_ANONYMOUS)-1;
+       } else {
+               name.bv_val = op->o_dn;
+               name.bv_len = strlen( op->o_dn );
        }
+
+       if( op->o_tag == LDAP_REQ_ADD ) {
+               mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ) );
+               mod->sml_op = mop;
+               mod->sml_desc = ad_dup( slap_schema.si_ad_creatorsName );
+               mod->sml_bvalues = (struct berval **) malloc( 2 * sizeof( struct berval * ) );
+               mod->sml_bvalues[0] = ber_bvdup( &name );
+               mod->sml_bvalues[1] = NULL;
+
+               *modtail = mod;
+               modtail = &mod->sml_next;
+
+               mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ) );
+               mod->sml_op = mop;
+               mod->sml_desc = ad_dup( slap_schema.si_ad_createTimestamp );
+               mod->sml_bvalues = (struct berval **) malloc( 2 * sizeof( struct berval * ) );
+               mod->sml_bvalues[0] = ber_bvdup( &timestamp );
+               mod->sml_bvalues[1] = NULL;
+               *modtail = mod;
+               modtail = &mod->sml_next;
+       }
+
+       mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ) );
+       mod->sml_op = mop;
+       mod->sml_desc = ad_dup( slap_schema.si_ad_modifiersName );
+       mod->sml_bvalues = (struct berval **) malloc( 2 * sizeof( struct berval * ) );
+       mod->sml_bvalues[0] = ber_bvdup( &name );
+       mod->sml_bvalues[1] = NULL;
+       *modtail = mod;
+       modtail = &mod->sml_next;
+
+       mod = (Modifications *) ch_calloc( 1, sizeof( Modifications ) );
+       mod->sml_op = mop;
+       mod->sml_desc = ad_dup( slap_schema.si_ad_modifyTimestamp );
+       mod->sml_bvalues = (struct berval **) malloc( 2 * sizeof( struct berval * ) );
+       mod->sml_bvalues[0] = ber_bvdup( &timestamp );
+       mod->sml_bvalues[1] = NULL;
+       *modtail = mod;
+       modtail = &mod->sml_next;
+
+       return LDAP_SUCCESS;
 }
+