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Diffstat (limited to 'ldap/c-sdk/libraries/libldap/referral.c')
| -rw-r--r-- | ldap/c-sdk/libraries/libldap/referral.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/ldap/c-sdk/libraries/libldap/referral.c b/ldap/c-sdk/libraries/libldap/referral.c new file mode 100644 index 000000000..742d3d986 --- /dev/null +++ b/ldap/c-sdk/libraries/libldap/referral.c @@ -0,0 +1,177 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ +/* + * referral.c - routines for handling LDAPv3 referrals and references. + */ + +#include "ldap-int.h" + + +LDAPMessage * +LDAP_CALL +ldap_first_reference( LDAP *ld, LDAPMessage *res ) +{ + if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || res == NULLMSG ) { + return( NULLMSG ); + } + + if ( res->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) { + return( res ); + } + + return( ldap_next_reference( ld, res )); +} + + +LDAPMessage * +LDAP_CALL +ldap_next_reference( LDAP *ld, LDAPMessage *ref ) +{ + if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || ref == NULLMSG ) { + return( NULLMSG ); /* punt */ + } + + for ( ref = ref->lm_chain; ref != NULLMSG; ref = ref->lm_chain ) { + if ( ref->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) { + return( ref ); + } + } + + return( NULLMSG ); +} + + +int +LDAP_CALL +ldap_count_references( LDAP *ld, LDAPMessage *res ) +{ + int i; + + if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) { + return( -1 ); + } + + for ( i = 0; res != NULL; res = res->lm_chain ) { + if ( res->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) { + ++i; + } + } + + return( i ); +} + + +/* + * returns an LDAP error code. + */ +int +LDAP_CALL +ldap_parse_reference( LDAP *ld, LDAPMessage *ref, char ***referralsp, + LDAPControl ***serverctrlsp, int freeit ) +{ + int err; + + if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || + !NSLDAPI_VALID_LDAPMESSAGE_REFERENCE_POINTER( ref )) { + return( LDAP_PARAM_ERROR ); + } + + err = nsldapi_parse_reference( ld, ref->lm_ber, referralsp, + serverctrlsp ); + + LDAP_SET_LDERRNO( ld, err, NULL, NULL ); + + if ( freeit ) { + ldap_msgfree( ref ); + } + + return( err ); +} + + +/* + * returns an LDAP error code indicating success or failure of parsing + * does NOT set any error information inside "ld" + */ +int +nsldapi_parse_reference( LDAP *ld, BerElement *rber, char ***referralsp, + LDAPControl ***serverctrlsp ) +{ + int err; + BerElement ber; + char **refs; + + /* + * Parse a searchResultReference message. These are used in LDAPv3 + * and beyond and look like this: + * + * SearchResultReference ::= [APPLICATION 19] SEQUENCE OF LDAPURL + * + * all wrapped up in an LDAPMessage sequence which looks like this: + * + * LDAPMessage ::= SEQUENCE { + * messageID MessageID, + * SearchResultReference + * controls [0] Controls OPTIONAL + * } + * + * ldap_result() pulls out the message id, so by the time a result + * message gets here we are conveniently sitting at the start of the + * SearchResultReference itself. + */ + err = LDAP_SUCCESS; /* optimistic */ + ber = *rber; /* struct copy */ + + if ( ber_scanf( &ber, "{v", &refs ) == LBER_ERROR ) { + err = LDAP_DECODING_ERROR; + } else if ( serverctrlsp != NULL ) { + /* pull out controls (if requested and any are present) */ + if ( ber_scanf( &ber, "}" ) == LBER_ERROR ) { + err = LDAP_DECODING_ERROR; + } else { + err = nsldapi_get_controls( &ber, serverctrlsp ); + } + } + + if ( referralsp == NULL ) { + ldap_value_free( refs ); + } else { + *referralsp = refs; + } + + return( err ); +} |