mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-15 03:01:09 +08:00
2ec25ef881
adds POSIX RegEx (and removes BSD re_comp/re_exec) support. * POSIX RegEx is not currently included in the distribution, however we will probably add Henry Spencer's REGEX library soon. * ACL Group functionality is also included in this merge!
469 lines
11 KiB
C
469 lines
11 KiB
C
/* result.c - routines to send ldap results, errors, and referrals */
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <signal.h>
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#include "portable.h"
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#include "slap.h"
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#ifndef SYSERRLIST_IN_STDIO
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extern int sys_nerr;
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extern char *sys_errlist[];
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#endif
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extern int active_threads;
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extern pthread_mutex_t active_threads_mutex;
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extern pthread_mutex_t new_conn_mutex;
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extern pthread_t listener_tid;
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extern struct acl *acl_get_applicable();
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extern long num_entries_sent;
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extern long num_bytes_sent;
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extern pthread_mutex_t num_sent_mutex;
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void close_connection();
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static void
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send_ldap_result2(
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Connection *conn,
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Operation *op,
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int err,
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char *matched,
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char *text,
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int nentries
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)
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{
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BerElement *ber;
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int rc, sd;
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unsigned long tag, bytes;
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Debug( LDAP_DEBUG_TRACE, "send_ldap_result %d:%s:%s\n", err, matched ?
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matched : "", text ? text : "" );
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switch ( op->o_tag ) {
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case LBER_DEFAULT:
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tag = LBER_SEQUENCE;
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break;
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case LDAP_REQ_SEARCH:
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tag = LDAP_RES_SEARCH_RESULT;
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break;
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case LDAP_REQ_DELETE:
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tag = LDAP_RES_DELETE;
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break;
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default:
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tag = op->o_tag + 1;
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break;
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}
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#ifdef COMPAT30
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if ( (ber = ber_alloc_t( conn->c_version == 30 ? 0 : LBER_USE_DER ))
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== NULLBER ) {
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#else
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if ( (ber = der_alloc()) == NULLBER ) {
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#endif
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Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
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return;
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}
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#ifdef CLDAP
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if ( op->o_cldap ) {
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rc = ber_printf( ber, "{is{t{ess}}}", op->o_msgid, "", tag,
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err, matched ? matched : "", text ? text : "" );
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} else
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#endif
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#ifdef COMPAT30
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if ( conn->c_version == 30 ) {
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rc = ber_printf( ber, "{it{{ess}}}", op->o_msgid, tag, err,
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matched ? matched : "", text ? text : "" );
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} else
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#endif
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rc = ber_printf( ber, "{it{ess}}", op->o_msgid, tag, err,
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matched ? matched : "", text ? text : "" );
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if ( rc == -1 ) {
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Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
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return;
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}
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/* write only one pdu at a time - wait til it's our turn */
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pthread_mutex_lock( &conn->c_pdumutex );
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/* write the pdu */
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bytes = ber->ber_ptr - ber->ber_buf;
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pthread_mutex_lock( &new_conn_mutex );
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while ( conn->c_connid == op->o_connid && ber_flush( &conn->c_sb, ber,
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1 ) != 0 ) {
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pthread_mutex_unlock( &new_conn_mutex );
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/*
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* we got an error. if it's ewouldblock, we need to
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* wait on the socket being writable. otherwise, figure
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* it's a hard error and return.
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*/
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Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
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errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno]
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: "unknown", 0 );
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if ( errno != EWOULDBLOCK && errno != EAGAIN ) {
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close_connection( conn, op->o_connid, op->o_opid );
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pthread_mutex_unlock( &conn->c_pdumutex );
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return;
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}
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/* wait for socket to be write-ready */
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pthread_mutex_lock( &active_threads_mutex );
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active_threads--;
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conn->c_writewaiter = 1;
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#ifdef linux
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pthread_kill( listener_tid, SIGSTKFLT );
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#else /* !linux */
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pthread_kill( listener_tid, SIGUSR1 );
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#endif /* !linux */
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pthread_cond_wait( &conn->c_wcv, &active_threads_mutex );
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pthread_mutex_unlock( &active_threads_mutex );
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pthread_yield();
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pthread_mutex_lock( &new_conn_mutex );
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}
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pthread_mutex_unlock( &new_conn_mutex );
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pthread_mutex_unlock( &conn->c_pdumutex );
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pthread_mutex_lock( &num_sent_mutex );
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num_bytes_sent += bytes;
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pthread_mutex_unlock( &num_sent_mutex );
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Statslog( LDAP_DEBUG_STATS,
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"conn=%d op=%d RESULT err=%d tag=%d nentries=%d\n", conn->c_connid,
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op->o_opid, err, tag, nentries );
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return;
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}
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void
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send_ldap_result(
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Connection *conn,
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Operation *op,
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int err,
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char *matched,
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char *text
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)
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{
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#ifdef CLDAP
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if ( op->o_cldap ) {
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SAFEMEMCPY( (char *)conn->c_sb.sb_useaddr, &op->o_clientaddr,
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sizeof( struct sockaddr ));
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Debug( LDAP_DEBUG_TRACE, "UDP response to %s port %d\n",
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inet_ntoa(((struct sockaddr_in *)
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conn->c_sb.sb_useaddr)->sin_addr ),
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((struct sockaddr_in *) conn->c_sb.sb_useaddr)->sin_port,
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0 );
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}
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#endif
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send_ldap_result2( conn, op, err, matched, text, 0 );
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}
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void
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send_ldap_search_result(
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Connection *conn,
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Operation *op,
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int err,
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char *matched,
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char *text,
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int nentries
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)
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{
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send_ldap_result2( conn, op, err, matched, text, nentries );
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}
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int
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send_search_entry(
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Backend *be,
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Connection *conn,
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Operation *op,
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Entry *e,
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char **attrs,
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int attrsonly
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)
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{
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BerElement *ber;
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Attribute *a;
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int i, rc, bytes, sd;
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struct acl *acl;
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char *edn;
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Debug( LDAP_DEBUG_TRACE, "=> send_search_entry (%s)\n", e->e_dn, 0, 0 );
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if ( ! access_allowed( be, conn, op, e, "entry", NULL, op->o_dn,
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ACL_READ ) ) {
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Debug( LDAP_DEBUG_ACL, "acl: access to entry not allowed\n",
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0, 0, 0 );
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return( 1 );
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}
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edn = dn_normalize_case( strdup( e->e_dn ) );
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#ifdef COMPAT30
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if ( (ber = ber_alloc_t( conn->c_version == 30 ? 0 : LBER_USE_DER ))
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== NULLBER )
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#else
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if ( (ber = der_alloc()) == NULLBER )
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#endif
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{
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Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
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"ber_alloc" );
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free(edn);
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return( 1 );
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}
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#ifdef COMPAT30
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if ( conn->c_version == 30 ) {
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rc = ber_printf( ber, "{it{{s{", op->o_msgid,
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LDAP_RES_SEARCH_ENTRY, e->e_dn );
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} else
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#endif
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{
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rc = ber_printf( ber, "{it{s{", op->o_msgid,
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LDAP_RES_SEARCH_ENTRY, e->e_dn );
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}
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if ( rc == -1 ) {
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Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
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ber_free( ber, 1 );
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
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"ber_printf dn" );
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free(edn);
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return( 1 );
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}
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for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
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regmatch_t matches[MAXREMATCHES];
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if ( attrs != NULL && ! charray_inlist( attrs, a->a_type ) ) {
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continue;
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}
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/* the lastmod attributes are ignored by ACL checking */
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if ( strcasecmp( a->a_type, "modifiersname" ) == 0 ||
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strcasecmp( a->a_type, "modifytimestamp" ) == 0 ||
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strcasecmp( a->a_type, "creatorsname" ) == 0 ||
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strcasecmp( a->a_type, "createtimestamp" ) == 0 )
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{
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Debug( LDAP_DEBUG_ACL, "LASTMOD attribute: %s access DEFAULT\n",
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a->a_type, 0, 0 );
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acl = NULL;
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} else {
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acl = acl_get_applicable( be, op, e, a->a_type, edn,
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MAXREMATCHES, matches );
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}
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if ( ! acl_access_allowed( acl, be, conn, e, NULL, op, ACL_READ,
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edn, matches ) )
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{
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continue;
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}
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if ( ber_printf( ber, "{s[", a->a_type ) == -1 ) {
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Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
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ber_free( ber, 1 );
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
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NULL, "ber_printf type" );
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free(edn);
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return( 1 );
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}
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if ( ! attrsonly ) {
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for ( i = 0; a->a_vals[i] != NULL; i++ ) {
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if ( a->a_syntax & SYNTAX_DN &&
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! acl_access_allowed( acl, be, conn, e, a->a_vals[i], op,
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ACL_READ, edn, matches) )
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{
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continue;
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}
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if ( ber_printf( ber, "o",
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a->a_vals[i]->bv_val,
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a->a_vals[i]->bv_len ) == -1 )
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{
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Debug( LDAP_DEBUG_ANY,
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"ber_printf failed\n", 0, 0, 0 );
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ber_free( ber, 1 );
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send_ldap_result( conn, op,
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LDAP_OPERATIONS_ERROR, NULL,
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"ber_printf value" );
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free(edn);
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return( 1 );
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}
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}
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}
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if ( ber_printf( ber, "]}" ) == -1 ) {
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Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
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ber_free( ber, 1 );
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
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NULL, "ber_printf type end" );
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free(edn);
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return( 1 );
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}
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}
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free(edn);
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#ifdef COMPAT30
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if ( conn->c_version == 30 ) {
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rc = ber_printf( ber, "}}}}" );
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} else
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#endif
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rc = ber_printf( ber, "}}}" );
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if ( rc == -1 ) {
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Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
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ber_free( ber, 1 );
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send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
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"ber_printf entry end" );
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return( 1 );
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}
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/* write only one pdu at a time - wait til it's our turn */
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pthread_mutex_lock( &conn->c_pdumutex );
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bytes = ber->ber_ptr - ber->ber_buf;
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pthread_mutex_lock( &new_conn_mutex );
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while ( conn->c_connid == op->o_connid && ber_flush( &conn->c_sb, ber,
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1 ) != 0 ) {
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pthread_mutex_unlock( &new_conn_mutex );
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/*
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* we got an error. if it's ewouldblock, we need to
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* wait on the socket being writable. otherwise, figure
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* it's a hard error and return.
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*/
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Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
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errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno]
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: "unknown", 0 );
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if ( errno != EWOULDBLOCK && errno != EAGAIN ) {
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close_connection( conn, op->o_connid, op->o_opid );
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pthread_mutex_unlock( &conn->c_pdumutex );
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return( -1 );
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}
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/* wait for socket to be write-ready */
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pthread_mutex_lock( &active_threads_mutex );
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active_threads--;
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conn->c_writewaiter = 1;
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pthread_kill( listener_tid, SIGUSR1 );
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pthread_cond_wait( &conn->c_wcv, &active_threads_mutex );
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pthread_mutex_unlock( &active_threads_mutex );
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pthread_yield();
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pthread_mutex_lock( &new_conn_mutex );
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}
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pthread_mutex_unlock( &new_conn_mutex );
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pthread_mutex_unlock( &conn->c_pdumutex );
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pthread_mutex_lock( &num_sent_mutex );
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num_bytes_sent += bytes;
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num_entries_sent++;
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pthread_mutex_unlock( &num_sent_mutex );
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pthread_mutex_lock( &new_conn_mutex );
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if ( conn->c_connid == op->o_connid ) {
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rc = 0;
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Statslog( LDAP_DEBUG_STATS2, "conn=%d op=%d ENTRY dn=\"%s\"\n",
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conn->c_connid, op->o_opid, e->e_dn, 0, 0 );
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} else {
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rc = -1;
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}
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pthread_mutex_unlock( &new_conn_mutex );
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Debug( LDAP_DEBUG_TRACE, "<= send_search_entry\n", 0, 0, 0 );
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return( rc );
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}
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int
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str2result(
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char *s,
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int *code,
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char **matched,
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char **info
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)
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{
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int rc;
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char *c;
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*code = LDAP_SUCCESS;
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*matched = NULL;
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*info = NULL;
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if ( strncasecmp( s, "RESULT", 6 ) != 0 ) {
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Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
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s, 0, 0 );
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return( -1 );
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}
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rc = 0;
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while ( (s = strchr( s, '\n' )) != NULL ) {
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*s++ = '\0';
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if ( *s == '\0' ) {
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break;
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}
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if ( (c = strchr( s, ':' )) != NULL ) {
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c++;
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}
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if ( strncasecmp( s, "code", 4 ) == 0 ) {
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if ( c != NULL ) {
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*code = atoi( c );
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}
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} else if ( strncasecmp( s, "matched", 7 ) == 0 ) {
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if ( c != NULL ) {
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*matched = c;
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}
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} else if ( strncasecmp( s, "info", 4 ) == 0 ) {
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if ( c != NULL ) {
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*info = c;
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}
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} else {
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Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
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s, 0, 0 );
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rc = -1;
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}
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}
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return( rc );
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}
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/*
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* close_connection - close a connection. takes the connection to close,
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* the connid associated with the operation generating the close (so we
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* don't accidentally close a connection that's not ours), and the opid
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* of the operation generating the close (for logging purposes).
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*/
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void
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close_connection( Connection *conn, int opconnid, int opid )
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{
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pthread_mutex_lock( &new_conn_mutex );
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if ( conn->c_sb.sb_sd != -1 && conn->c_connid == opconnid ) {
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Statslog( LDAP_DEBUG_STATS,
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"conn=%d op=%d fd=%d closed errno=%d\n", conn->c_connid,
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opid, conn->c_sb.sb_sd, errno, 0 );
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close( conn->c_sb.sb_sd );
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conn->c_sb.sb_sd = -1;
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conn->c_version = 0;
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}
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pthread_mutex_unlock( &new_conn_mutex );
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}
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