]> git.sur5r.net Git - openldap/blobdiff - libraries/libldap/open.c
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[openldap] / libraries / libldap / open.c
index 7fa90682eea50a176e1788c16707ea9948946f6f..7f60452a9dd5e6095284901855b940b9202f6f9f 100644 (file)
@@ -1,4 +1,9 @@
+/* $OpenLDAP$ */
 /*
+ * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/*  Portions
  *  Copyright (c) 1995 Regents of the University of Michigan.
  *  All rights reserved.
  *
 
 #include "portable.h"
 
-#ifndef lint 
-static char copyright[] = "@(#) Copyright (c) 1995 Regents of the University of Michigan.\nAll rights reserved.\n";
-#endif
-
 #include <stdio.h>
-#include <stdlib.h>
+#include <limits.h>
+
+#include <ac/stdlib.h>
 
+#include <ac/param.h>
 #include <ac/socket.h>
 #include <ac/string.h>
 #include <ac/time.h>
 
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
+#include <ac/unistd.h>
 
-#include "lber.h"
-#include "ldap.h"
 #include "ldap-int.h"
+#include "ldap_log.h"
 
-#ifdef LDAP_DEBUG
-int    ldap_debug;
-#endif
+int ldap_open_defconn( LDAP *ld )
+{
+       ld->ld_defconn = ldap_new_connection( ld,
+               ld->ld_options.ldo_defludp, 1, 1, NULL );
 
+       if( ld->ld_defconn == NULL ) {
+               ld->ld_errno = LDAP_SERVER_DOWN;
+               return -1;
+       }
+
+       ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
+       return 0;
+}
 
 /*
  * ldap_open - initialize and connect to an ldap server.  A magic cookie to
@@ -42,211 +52,372 @@ int       ldap_debug;
  */
 
 LDAP *
-ldap_open( char *host, int port )
+ldap_open( LDAP_CONST char *host, int port )
 {
+       int rc;
        LDAP            *ld;
-#ifdef LDAP_REFERRALS
-       LDAPServer      *srv;
-#endif /* LDAP_REFERRALS */
 
-       Debug( LDAP_DEBUG_TRACE, "ldap_open\n", 0, 0, 0 );
+#ifdef NEW_LOGGING
+       LDAP_LOG ( CONNECTION, ARGS, "ldap_open(%s, %d)\n", host, port, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "ldap_open(%s, %d)\n",
+               host, port, 0 );
+#endif
 
-       if (( ld = ldap_init( host, port )) == NULL ) {
+       ld = ldap_init( host, port );
+       if ( ld == NULL ) {
                return( NULL );
        }
 
-#ifdef LDAP_REFERRALS
-       if (( srv = (LDAPServer *)calloc( 1, sizeof( LDAPServer ))) ==
-           NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
-           strdup( ld->ld_defhost )) == NULL )) {
-               ldap_ld_free( ld, 0 );
-               return( NULL );
-       }
-       srv->lsrv_port = ld->ld_defport;
+       rc = ldap_open_defconn( ld );
 
-       if (( ld->ld_defconn = ldap_new_connection( ld, &srv, 1,1,0 )) == NULL ) {
-               if ( ld->ld_defhost != NULL ) free( srv->lsrv_host );
-               free( (char *)srv );
-               ldap_ld_free( ld, 0 );
-               return( NULL );
+       if( rc < 0 ) {
+               ldap_ld_free( ld, 0, NULL, NULL );
+               ld = NULL;
        }
-       ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
-
-#else /* LDAP_REFERRALS */
-       if ( open_ldap_connection( ld, &ld->ld_sb, ld->ld_defhost,
-           ld->ld_defport, &ld->ld_host, 0 ) < 0 ) {
-               ldap_ld_free( ld, 0 );
-               return( NULL );
-       }
-#endif /* LDAP_REFERRALS */
 
-       Debug( LDAP_DEBUG_TRACE, "ldap_open successful, ld_host is %s\n",
-               ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
+#ifdef NEW_LOGGING
+       LDAP_LOG ( CONNECTION, RESULTS, "ldap_open: %s\n",
+               ld == NULL ? "succeeded" : "failed", 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "ldap_open: %s\n",
+               ld == NULL ? "succeeded" : "failed", 0, 0 );
+#endif
 
-       return( ld );
+       return ld;
 }
 
 
-/*
- * ldap_init - initialize the LDAP library.  A magic cookie to be used for
- * future communication is returned on success, NULL on failure.
- * "defhost" may be a space-separated list of hosts or IP addresses
- *
- * Example:
- *     LDAP    *ld;
- *     ld = ldap_open( default_hostname, default_port );
- */
-LDAP *
-ldap_init( char *defhost, int defport )
+
+int
+ldap_create( LDAP **ldp )
 {
        LDAP                    *ld;
+       struct ldapoptions      *gopts;
 
-       Debug( LDAP_DEBUG_TRACE, "ldap_init\n", 0, 0, 0 );
-
-#ifdef HAVE_WINSOCK2
-{      WORD wVersionRequested;
-       WSADATA wsaData;
-       int err;
-       wVersionRequested = MAKEWORD( 2, 0 );
-       err = WSAStartup( wVersionRequested, &wsaData );
-       if ( err != 0 ) {
-               /* Tell the user that we couldn't find a usable */
-               /* WinSock DLL.                                  */
-               return NULL;
+       *ldp = NULL;
+       /* Get pointer to global option structure */
+       if ( (gopts = LDAP_INT_GLOBAL_OPT()) == NULL) {
+               return LDAP_NO_MEMORY;
        }
-       /* Confirm that the WinSock DLL supports 2.0.*/
-       /* Note that if the DLL supports versions greater    */
-       /* than 2.0 in addition to 2.0, it will still return */
-       /* 2.0 in wVersion since that is the version we      */
-       /* requested.                                        */
-       if ( LOBYTE( wsaData.wVersion ) != 2 ||
-               HIBYTE( wsaData.wVersion ) != 0 )
-       {
-           /* Tell the user that we couldn't find a usable */
-           /* WinSock DLL.                                  */
-           WSACleanup( );
-           return NULL; 
+
+       /* Initialize the global options, if not already done. */
+       if( gopts->ldo_valid != LDAP_INITIALIZED ) {
+               ldap_int_initialize(gopts, NULL);
+               if ( gopts->ldo_valid != LDAP_INITIALIZED )
+                       return LDAP_LOCAL_ERROR;
        }
-}      /* The WinSock DLL is acceptable. Proceed. */
 
-#elif HAVE_WINSOCK
-       if ( WSAStartup( 0x0101, &wsadata ) != 0 ) {
-           return( NULL );
+#ifdef NEW_LOGGING
+       LDAP_LOG ( CONNECTION, ENTRY, "ldap_create\n", 0, 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "ldap_create\n", 0, 0, 0 );
+#endif
+
+       if ( (ld = (LDAP *) LDAP_CALLOC( 1, sizeof(LDAP) )) == NULL ) {
+               return( LDAP_NO_MEMORY );
        }
+   
+       /* copy the global options */
+       AC_MEMCPY(&ld->ld_options, gopts, sizeof(ld->ld_options));
+
+       ld->ld_valid = LDAP_VALID_SESSION;
+
+       /* but not pointers to malloc'ed items */
+       ld->ld_options.ldo_sctrls = NULL;
+       ld->ld_options.ldo_cctrls = NULL;
+
+#ifdef HAVE_CYRUS_SASL
+       ld->ld_options.ldo_def_sasl_mech = gopts->ldo_def_sasl_mech
+               ? LDAP_STRDUP( gopts->ldo_def_sasl_mech ) : NULL;
+       ld->ld_options.ldo_def_sasl_realm = gopts->ldo_def_sasl_realm
+               ? LDAP_STRDUP( gopts->ldo_def_sasl_realm ) : NULL;
+       ld->ld_options.ldo_def_sasl_authcid = gopts->ldo_def_sasl_authcid
+               ? LDAP_STRDUP( gopts->ldo_def_sasl_authcid ) : NULL;
+       ld->ld_options.ldo_def_sasl_authzid = gopts->ldo_def_sasl_authzid
+               ? LDAP_STRDUP( gopts->ldo_def_sasl_authzid ) : NULL;
 #endif
 
-       if ( (ld = (LDAP *) calloc( 1, sizeof(LDAP) )) == NULL ) {
-           WSACleanup( );
-               return( NULL );
+       ld->ld_options.ldo_defludp = ldap_url_duplist(gopts->ldo_defludp);
+
+       if ( ld->ld_options.ldo_defludp == NULL ) {
+               LDAP_FREE( (char*)ld );
+               return LDAP_NO_MEMORY;
        }
 
-#ifdef LDAP_REFERRALS
        if (( ld->ld_selectinfo = ldap_new_select_info()) == NULL ) {
-               free( (char*)ld );
-           WSACleanup( );
-               return( NULL );
+               ldap_free_urllist( ld->ld_options.ldo_defludp );
+               LDAP_FREE( (char*) ld );
+               return LDAP_NO_MEMORY;
        }
-       ld->ld_options = LDAP_OPT_REFERRALS;
-#endif /* LDAP_REFERRALS */
 
-       if ( defhost != NULL &&
-           ( ld->ld_defhost = strdup( defhost )) == NULL ) {
-#ifdef LDAP_REFERRALS
-               ldap_free_select_info( ld->ld_selectinfo );
-#endif /* LDAP_REFERRALS */
-               free( (char*)ld );
-           WSACleanup( );
-               return( NULL );
+       ld->ld_lberoptions = LBER_USE_DER;
+
+       ld->ld_sb = ber_sockbuf_alloc( );
+       if ( ld->ld_sb == NULL ) {
+               ldap_free_urllist( ld->ld_options.ldo_defludp );
+               LDAP_FREE( (char*) ld );
+               return LDAP_NO_MEMORY;
        }
 
+#ifdef LDAP_R_COMPILE
+       ldap_pvt_thread_mutex_init( &ld->ld_req_mutex );
+       ldap_pvt_thread_mutex_init( &ld->ld_res_mutex );
+#endif
+       *ldp = ld;
+       return LDAP_SUCCESS;
+}
 
-       ld->ld_defport = ( defport == 0 ) ? LDAP_PORT : defport;
-       ld->ld_version = LDAP_VERSION;
-       ld->ld_lberoptions = LBER_USE_DER;
-       ld->ld_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
+/*
+ * ldap_init - initialize the LDAP library.  A magic cookie to be used for
+ * future communication is returned on success, NULL on failure.
+ * "host" may be a space-separated list of hosts or IP addresses
+ *
+ * Example:
+ *     LDAP    *ld;
+ *     ld = ldap_init( host, port );
+ */
+LDAP *
+ldap_init( LDAP_CONST char *defhost, int defport )
+{
+       LDAP *ld;
+       int rc;
 
-#ifdef LDAP_REFERRALS
-        ld->ld_options |= LDAP_OPT_REFERRALS;
-#endif /* LDAP_REFERRALS */
+       rc = ldap_create(&ld);
+       if ( rc != LDAP_SUCCESS )
+               return NULL;
 
-#if defined( STR_TRANSLATION ) && defined( LDAP_DEFAULT_CHARSET )
-       ld->ld_lberoptions |= LBER_TRANSLATE_STRINGS;
-#if LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET
-       ldap_set_string_translators( ld, ldap_8859_to_t61, ldap_t61_to_8859 );
-#endif /* LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET */
-#endif /* STR_TRANSLATION && LDAP_DEFAULT_CHARSET */
+       if (defport != 0)
+               ld->ld_options.ldo_defport = defport;
+
+       if (defhost != NULL) {
+               rc = ldap_set_option(ld, LDAP_OPT_HOST_NAME, defhost);
+               if ( rc != LDAP_SUCCESS ) {
+                       ldap_ld_free(ld, 1, NULL, NULL);
+                       return NULL;
+               }
+       }
 
        return( ld );
 }
 
 
 int
-open_ldap_connection( LDAP *ld, Sockbuf *sb, char *host, int defport,
-       char **krbinstancep, int async )
+ldap_initialize( LDAP **ldp, LDAP_CONST char *url )
 {
-       int                     rc = -1;
-       int                             port;
-       char                    *p, *q, *r;
-       char                    *curhost, hostname[ 2*MAXHOSTNAMELEN ];
-
-       Debug( LDAP_DEBUG_TRACE, "open_ldap_connection\n", 0, 0, 0 );
-
-       defport = htons( (short) defport );
-
-       if ( host != NULL ) {
-               for ( p = host; p != NULL && *p != '\0'; p = q ) {
-                       if (( q = strchr( p, ' ' )) != NULL ) {
-                               strncpy( hostname, p, q - p );
-                               hostname[ q - p ] = '\0';
-                               curhost = hostname;
-                               while ( *q == ' ' ) {
-                                   ++q;
-                               }
+       int rc;
+       LDAP *ld;
+
+       *ldp = NULL;
+       rc = ldap_create(&ld);
+       if ( rc != LDAP_SUCCESS )
+               return rc;
+
+       if (url != NULL) {
+               rc = ldap_set_option(ld, LDAP_OPT_URI, url);
+               if ( rc != LDAP_SUCCESS ) {
+                       ldap_ld_free(ld, 1, NULL, NULL);
+                       return rc;
+               }
+#ifdef LDAP_CONNECTIONLESS
+               if (ldap_is_ldapc_url(url))
+                       LDAP_IS_UDP(ld) = 1;
+#endif
+       }
+
+       *ldp = ld;
+       return LDAP_SUCCESS;
+}
+
+int
+ldap_int_open_connection(
+       LDAP *ld,
+       LDAPConn *conn,
+       LDAPURLDesc *srv,
+       int async )
+{
+       int rc = -1;
+       char *host;
+       int port, proto;
+
+#ifdef NEW_LOGGING
+       LDAP_LOG ( CONNECTION, ENTRY, "ldap_int_open_connection\n", 0, 0, 0 );
+#else
+       Debug( LDAP_DEBUG_TRACE, "ldap_int_open_connection\n", 0, 0, 0 );
+#endif
+
+       switch ( proto = ldap_pvt_url_scheme2proto( srv->lud_scheme ) ) {
+               case LDAP_PROTO_TCP:
+                       port = srv->lud_port;
+
+                       if ( srv->lud_host == NULL || *srv->lud_host == 0 ) {
+                               host = NULL;
                        } else {
-                               curhost = p;    /* avoid copy if possible */
-                               q = NULL;
+                               host = srv->lud_host;
                        }
 
-                       if (( r = strchr( curhost, ':' )) != NULL ) {
-                           if ( curhost != hostname ) {
-                               strcpy( hostname, curhost );    /* now copy */
-                               r = hostname + ( r - curhost );
-                               curhost = hostname;
-                           }
-                           *r++ = '\0';
-                           port = htons( (short)atoi( r ));
-                       } else {
-                           port = defport;   
+                       if( !port ) {
+                               if( strcmp(srv->lud_scheme, "ldaps") == 0 ) {
+                                       port = LDAPS_PORT;
+                               } else {
+                                       port = LDAP_PORT;
+                               }
                        }
 
-                       if (( rc = ldap_connect_to_host( sb, curhost, 0L,
-                           port, async )) != -1 ) {
-                               break;
+                       rc = ldap_connect_to_host( ld, conn->lconn_sb,
+                               proto, host, port, async );
+
+                       if ( rc == -1 ) return rc;
+
+#ifdef LDAP_DEBUG
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_debug,
+                               LBER_SBIOD_LEVEL_PROVIDER, (void *)"tcp_" );
+#endif
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_tcp,
+                               LBER_SBIOD_LEVEL_PROVIDER, NULL );
+
+                       break;
+
+#ifdef LDAP_CONNECTIONLESS
+               case LDAP_PROTO_UDP:
+                       port = srv->lud_port;
+
+                       if ( srv->lud_host == NULL || *srv->lud_host == 0 ) {
+                               host = NULL;
+                       } else {
+                               host = srv->lud_host;
                        }
-               }
-       } else {
-               rc = ldap_connect_to_host( sb, NULL, htonl( INADDR_LOOPBACK ),
-                   defport, async );
+
+                       if( !port ) port = LDAP_PORT;
+
+                       LDAP_IS_UDP(ld) = 1;
+                       rc = ldap_connect_to_host( ld, conn->lconn_sb,
+                               proto, host, port, async );
+
+                       if ( rc == -1 ) return rc;
+#ifdef LDAP_DEBUG
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_debug,
+                               LBER_SBIOD_LEVEL_PROVIDER, (void *)"udp_" );
+#endif
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_udp,
+                               LBER_SBIOD_LEVEL_PROVIDER, NULL );
+
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_readahead,
+                               LBER_SBIOD_LEVEL_PROVIDER, NULL );
+
+                       break;
+#endif
+               case LDAP_PROTO_IPC:
+#ifdef LDAP_PF_LOCAL
+                       /* only IPC mechanism supported is PF_LOCAL (PF_UNIX) */
+                       rc = ldap_connect_to_path( ld, conn->lconn_sb,
+                               srv->lud_host, async );
+                       if ( rc == -1 ) return rc;
+#ifdef LDAP_DEBUG
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_debug,
+                               LBER_SBIOD_LEVEL_PROVIDER, (void *)"ipc_" );
+#endif
+                       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_fd,
+                               LBER_SBIOD_LEVEL_PROVIDER, NULL );
+
+                       break;
+#endif /* LDAP_PF_LOCAL */
+               default:
+                       return -1;
+                       break;
        }
 
-       if ( rc == -1 ) {
-               return( rc );
+#ifdef LDAP_DEBUG
+       ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_debug,
+               INT_MAX, (void *)"ldap_" );
+#endif
+
+#ifdef LDAP_CONNECTIONLESS
+       if( proto == LDAP_PROTO_UDP ) return 0;
+#endif
+
+#ifdef HAVE_TLS
+       if (ld->ld_options.ldo_tls_mode == LDAP_OPT_X_TLS_HARD ||
+               strcmp( srv->lud_scheme, "ldaps" ) == 0 )
+       {
+               ++conn->lconn_refcnt;   /* avoid premature free */
+
+               rc = ldap_int_tls_start( ld, conn, srv );
+
+               --conn->lconn_refcnt;
+
+               if (rc != LDAP_SUCCESS) {
+                       return -1;
+               }
        }
+#endif
+
+#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
+       if ( conn->lconn_krbinstance == NULL ) {
+               char *c;
+               conn->lconn_krbinstance = ldap_host_connected_to(
+                       conn->lconn_sb, host );
 
-       if ( krbinstancep != NULL ) {
-#ifdef HAVE_KERBEROS
-               if (( *krbinstancep = ldap_host_connected_to( sb )) != NULL &&
-                   ( p = strchr( *krbinstancep, '.' )) != NULL ) {
-                       *p = '\0';
+               if( conn->lconn_krbinstance != NULL && 
+                   ( c = strchr( conn->lconn_krbinstance, '.' )) != NULL ) {
+                       *c = '\0';
                }
-#else /* HAVE_KERBEROS */
-               krbinstancep = NULL;
-#endif /* HAVE_KERBEROS */
        }
+#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND */
 
        return( 0 );
 }
+
+
+int ldap_open_internal_connection( LDAP **ldp, ber_socket_t *fdp )
+{
+       int rc;
+       LDAPConn *c;
+       LDAPRequest *lr;
+
+       rc = ldap_create( ldp );
+       if( rc != LDAP_SUCCESS ) {
+               *ldp = NULL;
+               return( rc );
+       }
+
+       /* Make it appear that a search request, msgid 0, was sent */
+       lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ));
+       if( lr == NULL ) {
+               ldap_unbind( *ldp );
+               *ldp = NULL;
+               return( LDAP_NO_MEMORY );
+       }
+       memset(lr, 0, sizeof( LDAPRequest ));
+       lr->lr_msgid = 0;
+       lr->lr_status = LDAP_REQST_INPROGRESS;
+       lr->lr_res_errno = LDAP_SUCCESS;
+       /* no mutex lock needed, we just created this ld here */
+       (*ldp)->ld_requests = lr;
+
+       /* Attach the passed socket as the *LDAP's connection */
+       c = ldap_new_connection( *ldp, NULL, 1, 0, NULL);
+       if( c == NULL ) {
+               ldap_unbind( *ldp );
+               *ldp = NULL;
+               return( LDAP_NO_MEMORY );
+       }
+       ber_sockbuf_ctrl( c->lconn_sb, LBER_SB_OPT_SET_FD, fdp );
+#ifdef LDAP_DEBUG
+       ber_sockbuf_add_io( c->lconn_sb, &ber_sockbuf_io_debug,
+               LBER_SBIOD_LEVEL_PROVIDER, (void *)"int_" );
+#endif
+       ber_sockbuf_add_io( c->lconn_sb, &ber_sockbuf_io_tcp,
+         LBER_SBIOD_LEVEL_PROVIDER, NULL );
+       (*ldp)->ld_defconn = c;
+
+       /* Add the connection to the *LDAP's select pool */
+       ldap_mark_select_read( *ldp, c->lconn_sb );
+       ldap_mark_select_write( *ldp, c->lconn_sb );
+
+       /* Make this connection an LDAP V3 protocol connection */
+       rc = LDAP_VERSION3;
+       ldap_set_option( *ldp, LDAP_OPT_PROTOCOL_VERSION, &rc );
+
+       return( LDAP_SUCCESS );
+}