openldap/libraries/libldap/open.c

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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/* Portions
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* Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* open.c
*/
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#include "portable.h"
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#include <stdio.h>
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#include <limits.h>
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#include <ac/stdlib.h>
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#include <ac/param.h>
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#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
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#include <ac/unistd.h>
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#include "ldap-int.h"
#include "ldap_log.h"
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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;
}
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/*
* ldap_open - initialize and connect to an ldap server. 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_open( hostname, port );
*/
LDAP *
Vienna Bulk Commit This commit includes many changes. All changes compile under NT but have not been tested under UNIX. A Summary of changes (likely incomplete): NT changes: Removed lint. Clean up configuration support for "Debug", "Release", "SDebug", and "SRelease" configurations. Share output directories for clients, libraries, and slapd. (maybe they should be combined further and moved to build/{,S}{Debug,Release}). Enable threading when _MT is defined. Enable debuging when _DEBUG is defined. Disable setting of NDEBUG under Release/SRelease. Asserts are disabled in <ac/assert.h> when LDAP_DEBUG is not defined. Added 'build/main.dsp' Master project. Removed non-slapd projects from slapd.dsp (see main.dsp). Removed replaced many uses of _WIN32 macro with feature based macros. ldap_cdefs.h changes #define LDAP_CONST const (see below) #define LDAP_F(type) LDAP_F_PRE type LDAP_F_POST To allow specifiers to be added before and after the type declaration. (For DLL handling) LBER/LDAP changes Namespace changes: s/lber_/ber_/ for here and there. s/NAME_ERROR/LDAP_NAME_ERROR/g Deleted NULLMSG and other NULL* macros for namespace reasons. "const" libraries. Installed headers (ie: lber.h, ldap.h) use LDAP_CONST macro. Normally set to 'const' when __STDC__. Can be set externally to enable/disable 'constification' of external interface. Internal interface always uses 'const'. Did not fix warnings in -lldif (in lieu of new LDIF parser). Added _ext API implementations (excepting search and bind). Need to implement ldap_int_get_controls() for reponses with controls. Added numberous assert() checks. LDAP_R _MT defines HAVE_NT_THREADS Added numberous assert() checks. Changed ldap_pthread_t back to unsigned long. Used cast to HANDLE in _join(). LDBM Replaced _WIN32 with HAVE_SYSLOG ud Added version string if MKVERSION is not defined. (MKVERSION needs to be set under UNIX). slapd Made connection sockbuf field a pointer to a sockbuf. This removed slap.h dependency on lber-int.h. lber-int.h now only included by those files needing to mess with the sockbuf. Used ber_* functions/macros to access sockbuf internals whenever possible. Added version string if MKVERSION is not defined. (MKVERSION needs to be set under UNIX). Removed FD_SET unsigned lint slapd/tools Used EXEEXT to added ".exe" to routines. Need to define EXEEXT under UNIX. ldappasswd Added ldappasswd.dsp. Ported to NT. Used getpid() to seed rand(). nt_debug Minor cleanup. Added "portable.h" include and used <ac/*.h> where appropriate. Added const to char* format argument.
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ldap_open( LDAP_CONST char *host, int port )
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{
int rc;
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LDAP *ld;
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#ifdef NEW_LOGGING
LDAP_LOG ( CONNECTION, ARGS, "ldap_open(%s, %d)\n", host, port, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "ldap_open(%s, %d)\n",
host, port, 0 );
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#endif
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ld = ldap_init( host, port );
if ( ld == NULL ) {
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return( NULL );
}
rc = ldap_open_defconn( ld );
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if( rc < 0 ) {
Vienna Bulk Commit This commit includes many changes. All changes compile under NT but have not been tested under UNIX. A Summary of changes (likely incomplete): NT changes: Removed lint. Clean up configuration support for "Debug", "Release", "SDebug", and "SRelease" configurations. Share output directories for clients, libraries, and slapd. (maybe they should be combined further and moved to build/{,S}{Debug,Release}). Enable threading when _MT is defined. Enable debuging when _DEBUG is defined. Disable setting of NDEBUG under Release/SRelease. Asserts are disabled in <ac/assert.h> when LDAP_DEBUG is not defined. Added 'build/main.dsp' Master project. Removed non-slapd projects from slapd.dsp (see main.dsp). Removed replaced many uses of _WIN32 macro with feature based macros. ldap_cdefs.h changes #define LDAP_CONST const (see below) #define LDAP_F(type) LDAP_F_PRE type LDAP_F_POST To allow specifiers to be added before and after the type declaration. (For DLL handling) LBER/LDAP changes Namespace changes: s/lber_/ber_/ for here and there. s/NAME_ERROR/LDAP_NAME_ERROR/g Deleted NULLMSG and other NULL* macros for namespace reasons. "const" libraries. Installed headers (ie: lber.h, ldap.h) use LDAP_CONST macro. Normally set to 'const' when __STDC__. Can be set externally to enable/disable 'constification' of external interface. Internal interface always uses 'const'. Did not fix warnings in -lldif (in lieu of new LDIF parser). Added _ext API implementations (excepting search and bind). Need to implement ldap_int_get_controls() for reponses with controls. Added numberous assert() checks. LDAP_R _MT defines HAVE_NT_THREADS Added numberous assert() checks. Changed ldap_pthread_t back to unsigned long. Used cast to HANDLE in _join(). LDBM Replaced _WIN32 with HAVE_SYSLOG ud Added version string if MKVERSION is not defined. (MKVERSION needs to be set under UNIX). slapd Made connection sockbuf field a pointer to a sockbuf. This removed slap.h dependency on lber-int.h. lber-int.h now only included by those files needing to mess with the sockbuf. Used ber_* functions/macros to access sockbuf internals whenever possible. Added version string if MKVERSION is not defined. (MKVERSION needs to be set under UNIX). Removed FD_SET unsigned lint slapd/tools Used EXEEXT to added ".exe" to routines. Need to define EXEEXT under UNIX. ldappasswd Added ldappasswd.dsp. Ported to NT. Used getpid() to seed rand(). nt_debug Minor cleanup. Added "portable.h" include and used <ac/*.h> where appropriate. Added const to char* format argument.
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ldap_ld_free( ld, 0, NULL, NULL );
ld = NULL;
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}
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#ifdef NEW_LOGGING
LDAP_LOG ( CONNECTION, RESULTS, "ldap_open: %s\n",
ld == NULL ? "succeeded" : "failed", 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "ldap_open: %s\n",
ld == NULL ? "succeeded" : "failed", 0, 0 );
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#endif
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return ld;
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}
int
ldap_create( LDAP **ldp )
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{
LDAP *ld;
struct ldapoptions *gopts;
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*ldp = NULL;
/* Get pointer to global option structure */
if ( (gopts = LDAP_INT_GLOBAL_OPT()) == NULL) {
return LDAP_NO_MEMORY;
}
/* 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;
}
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#ifdef NEW_LOGGING
LDAP_LOG ( CONNECTION, ENTRY, "ldap_create\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "ldap_create\n", 0, 0, 0 );
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#endif
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if ( (ld = (LDAP *) LDAP_CALLOC( 1, sizeof(LDAP) )) == NULL ) {
return( LDAP_NO_MEMORY );
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}
/* copy the global options */
AC_MEMCPY(&ld->ld_options, gopts, sizeof(ld->ld_options));
ld->ld_valid = LDAP_VALID_SESSION;
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/* 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
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;
}
if (( ld->ld_selectinfo = ldap_new_select_info()) == NULL ) {
ldap_free_urllist( ld->ld_options.ldo_defludp );
LDAP_FREE( (char*) ld );
return LDAP_NO_MEMORY;
}
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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;
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}
/*
* 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;
rc = ldap_create(&ld);
if ( rc != LDAP_SUCCESS )
return NULL;
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
ldap_initialize( LDAP **ldp, LDAP_CONST char *url )
{
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;
}
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#ifdef LDAP_CONNECTIONLESS
if (ldap_is_ldapc_url(url))
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LDAP_IS_UDP(ld) = 1;
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#endif
}
*ldp = ld;
return LDAP_SUCCESS;
}
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int
ldap_int_open_connection(
LDAP *ld,
LDAPConn *conn,
LDAPURLDesc *srv,
int async )
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{
int rc = -1;
char *host;
int port, proto;
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#ifdef NEW_LOGGING
LDAP_LOG ( CONNECTION, ENTRY, "ldap_int_open_connection\n", 0, 0, 0 );
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#else
Debug( LDAP_DEBUG_TRACE, "ldap_int_open_connection\n", 0, 0, 0 );
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#endif
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switch ( proto = ldap_pvt_url_scheme2proto( srv->lud_scheme ) ) {
case LDAP_PROTO_TCP:
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port = srv->lud_port;
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if ( srv->lud_host == NULL || *srv->lud_host == 0 ) {
host = NULL;
} else {
host = srv->lud_host;
}
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if( !port ) {
if( strcmp(srv->lud_scheme, "ldaps") == 0 ) {
port = LDAPS_PORT;
} else {
port = LDAP_PORT;
}
}
rc = ldap_connect_to_host( ld, conn->lconn_sb,
proto, host, port, async );
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if ( rc == -1 ) return rc;
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#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;
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#ifdef LDAP_CONNECTIONLESS
case LDAP_PROTO_UDP:
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port = srv->lud_port;
if ( srv->lud_host == NULL || *srv->lud_host == 0 ) {
host = NULL;
} else {
host = srv->lud_host;
}
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if( !port ) port = LDAP_PORT;
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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) */
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rc = ldap_connect_to_path( ld, conn->lconn_sb,
srv->lud_host, async );
if ( rc == -1 ) return rc;
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#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;
}
#ifdef LDAP_DEBUG
ber_sockbuf_add_io( conn->lconn_sb, &ber_sockbuf_io_debug,
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INT_MAX, (void *)"ldap_" );
#endif
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#ifdef LDAP_CONNECTIONLESS
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if( proto == LDAP_PROTO_UDP ) return 0;
#endif
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#ifdef HAVE_TLS
if (ld->ld_options.ldo_tls_mode == LDAP_OPT_X_TLS_HARD ||
strcmp( srv->lud_scheme, "ldaps" ) == 0 )
{
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++conn->lconn_refcnt; /* avoid premature free */
rc = ldap_int_tls_start( ld, conn, srv );
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--conn->lconn_refcnt;
if (rc != LDAP_SUCCESS) {
return -1;
}
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}
#endif
#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
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if ( conn->lconn_krbinstance == NULL ) {
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char *c;
conn->lconn_krbinstance = ldap_host_connected_to(
conn->lconn_sb, host );
if( conn->lconn_krbinstance != NULL &&
( c = strchr( conn->lconn_krbinstance, '.' )) != NULL ) {
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*c = '\0';
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}
}
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#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND */
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return( 0 );
}
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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 */
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(*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 );
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#ifdef LDAP_DEBUG
ber_sockbuf_add_io( c->lconn_sb, &ber_sockbuf_io_debug,
LBER_SBIOD_LEVEL_PROVIDER, (void *)"int_" );
#endif
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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 );
}