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-rw-r--r--ldap/c-sdk/libldap/url.c527
1 files changed, 527 insertions, 0 deletions
diff --git a/ldap/c-sdk/libldap/url.c b/ldap/c-sdk/libldap/url.c
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index 000000000..789ee3ac2
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+++ b/ldap/c-sdk/libldap/url.c
@@ -0,0 +1,527 @@
+/* ***** 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 ***** */
+/*
+ * Copyright (c) 1996 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ */
+/* LIBLDAP url.c -- LDAP URL related routines
+ *
+ * LDAP URLs look like this:
+ * l d a p : / / [ hostport ] [ / dn [ ? [ attributes ] [ ? [ scope ]
+ * [ ? [ filter ] [ ? extensions ] ] ] ] ]
+ *
+ * where:
+ * hostport is a host or a host:port list that can be space-separated.
+ * attributes is a comma separated list
+ * scope is one of these three strings: base one sub (default=base)
+ * filter is a string-represented filter as in RFC 2254
+ * extensions is a comma-separated list of name=value pairs.
+ *
+ * e.g., ldap://ldap.itd.umich.edu/c=US?o,description?one?o=umich
+ *
+ * To accomodate IPv6 addresses, the host portion of a host that appears
+ * in hostport can be enclosed in square brackets, e.g
+ *
+ * e.g., ldap://[fe80::a00:20ff:fee5:c0b4]:3389/dc=siroe,dc=com
+ *
+ * We also tolerate URLs that look like: <ldapurl> and <URL:ldapurl>
+ */
+
+#if 0
+#ifndef lint
+static char copyright[] = "@(#) Copyright (c) 1996 Regents of the University of Michigan.\nAll rights reserved.\n";
+#endif
+#endif
+
+#include "ldap-int.h"
+
+
+static int skip_url_prefix( const char **urlp, int *enclosedp, int *securep );
+
+
+int
+LDAP_CALL
+ldap_is_ldap_url( const char *url )
+{
+ int enclosed, secure;
+
+ return( url != NULL
+ && skip_url_prefix( &url, &enclosed, &secure ));
+}
+
+
+static int
+skip_url_prefix( const char **urlp, int *enclosedp, int *securep )
+{
+/*
+ * return non-zero if this looks like a LDAP URL; zero if not
+ * if non-zero returned, *urlp will be moved past "ldap://" part of URL
+ * The data that *urlp points to is not changed by this function.
+ */
+ if ( *urlp == NULL ) {
+ return( 0 );
+ }
+
+ /* skip leading '<' (if any) */
+ if ( **urlp == '<' ) {
+ *enclosedp = 1;
+ ++*urlp;
+ } else {
+ *enclosedp = 0;
+ }
+
+ /* skip leading "URL:" (if any) */
+ if ( strlen( *urlp ) >= LDAP_URL_URLCOLON_LEN && strncasecmp(
+ *urlp, LDAP_URL_URLCOLON, LDAP_URL_URLCOLON_LEN ) == 0 ) {
+ *urlp += LDAP_URL_URLCOLON_LEN;
+ }
+
+ /* check for an "ldap://" prefix */
+ if ( strlen( *urlp ) >= LDAP_URL_PREFIX_LEN && strncasecmp( *urlp,
+ LDAP_URL_PREFIX, LDAP_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over URL prefix and return success */
+ *urlp += LDAP_URL_PREFIX_LEN;
+ *securep = 0;
+ return( 1 );
+ }
+
+ /* check for an "ldaps://" prefix */
+ if ( strlen( *urlp ) >= LDAPS_URL_PREFIX_LEN && strncasecmp( *urlp,
+ LDAPS_URL_PREFIX, LDAPS_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over URL prefix and return success */
+ *urlp += LDAPS_URL_PREFIX_LEN;
+ *securep = 1;
+ return( 1 );
+ }
+
+ return( 0 ); /* not an LDAP URL */
+}
+
+
+int
+LDAP_CALL
+ldap_url_parse_no_defaults( const char *url, LDAPURLDesc **ludpp, int dn_required)
+{
+ return( nsldapi_url_parse( url, ludpp, dn_required ) );
+}
+
+
+int
+LDAP_CALL
+ldap_url_parse( const char *url, LDAPURLDesc **ludpp )
+{
+/*
+ * Pick apart the pieces of an LDAP URL.
+ */
+ int rc;
+
+ if (( rc = nsldapi_url_parse( url, ludpp, 1 )) == 0 ) {
+ if ( (*ludpp)->lud_scope == -1 ) {
+ (*ludpp)->lud_scope = LDAP_SCOPE_BASE;
+ }
+ if ( (*ludpp)->lud_filter == NULL ) {
+ (*ludpp)->lud_filter = "(objectclass=*)";
+ }
+ if ( *((*ludpp)->lud_dn) == '\0' ) {
+ (*ludpp)->lud_dn = NULL;
+ }
+ } else if ( rc == LDAP_URL_UNRECOGNIZED_CRITICAL_EXTENSION ) {
+ rc = LDAP_URL_ERR_PARAM; /* mapped for backwards compatibility */
+ }
+
+ return( rc );
+}
+
+
+/*
+ * like ldap_url_parse() with a few exceptions:
+ * 1) if dn_required is zero, a missing DN does not generate an error
+ * (we just leave the lud_dn field NULL)
+ * 2) no defaults are set for lud_scope and lud_filter (they are set to -1
+ * and NULL respectively if no SCOPE or FILTER are present in the URL).
+ * 3) when there is a zero-length DN in a URL we do not set lud_dn to NULL.
+ *
+ * note that LDAPv3 URL extensions are ignored unless they are marked
+ * critical, in which case an LDAP_URL_UNRECOGNIZED_CRITICAL_EXTENSION error
+ * is returned.
+ */
+int
+nsldapi_url_parse( const char *url, LDAPURLDesc **ludpp, int dn_required )
+{
+
+ LDAPURLDesc *ludp;
+ char *urlcopy, *attrs, *scope, *extensions = NULL, *p, *q;
+ int enclosed, secure, i, nattrs, at_start;
+
+ LDAPDebug( LDAP_DEBUG_TRACE, "nsldapi_url_parse(%s)\n", url, 0, 0 );
+
+ if ( url == NULL || ludpp == NULL ) {
+ return( LDAP_URL_ERR_PARAM );
+ }
+
+ *ludpp = NULL; /* pessimistic */
+
+ if ( !skip_url_prefix( &url, &enclosed, &secure )) {
+ return( LDAP_URL_ERR_NOTLDAP );
+ }
+
+ /* allocate return struct */
+ if (( ludp = (LDAPURLDesc *)NSLDAPI_CALLOC( 1, sizeof( LDAPURLDesc )))
+ == NULLLDAPURLDESC ) {
+ return( LDAP_URL_ERR_MEM );
+ }
+
+ if ( secure ) {
+ ludp->lud_options |= LDAP_URL_OPT_SECURE;
+ }
+
+ /* make working copy of the remainder of the URL */
+ if (( urlcopy = nsldapi_strdup( url )) == NULL ) {
+ ldap_free_urldesc( ludp );
+ return( LDAP_URL_ERR_MEM );
+ }
+
+ if ( enclosed && *((p = urlcopy + strlen( urlcopy ) - 1)) == '>' ) {
+ *p = '\0';
+ }
+
+ /* initialize scope and filter */
+ ludp->lud_scope = -1;
+ ludp->lud_filter = NULL;
+
+ /* lud_string is the only malloc'd string space we use */
+ ludp->lud_string = urlcopy;
+
+ /* scan forward for '/' that marks end of hostport and begin. of dn */
+ if (( ludp->lud_dn = strchr( urlcopy, '/' )) == NULL ) {
+ if ( dn_required ) {
+ ldap_free_urldesc( ludp );
+ return( LDAP_URL_ERR_NODN );
+ }
+ } else {
+ /* terminate hostport; point to start of dn */
+ *ludp->lud_dn++ = '\0';
+ }
+
+
+ if ( *urlcopy == '\0' ) {
+ ludp->lud_host = NULL;
+ } else {
+ ludp->lud_host = urlcopy;
+ nsldapi_hex_unescape( ludp->lud_host );
+
+ /*
+ * Locate and strip off optional port number (:#) in host
+ * portion of URL.
+ *
+ * If more than one space-separated host is listed, we only
+ * look for a port number within the right-most one since
+ * ldap_init() will handle host parameters that look like
+ * host:port anyway.
+ */
+ if (( p = strrchr( ludp->lud_host, ' ' )) == NULL ) {
+ p = ludp->lud_host;
+ } else {
+ ++p;
+ }
+ if ( *p == '[' && ( q = strchr( p, ']' )) != NULL ) {
+ /* square brackets present -- skip past them */
+ p = q++;
+ }
+ if (( p = strchr( p, ':' )) != NULL ) {
+ *p++ = '\0';
+ ludp->lud_port = atoi( p );
+ if ( *ludp->lud_host == '\0' ) {
+ ludp->lud_host = NULL; /* no hostname */
+ }
+ }
+ }
+
+ /* scan for '?' that marks end of dn and beginning of attributes */
+ attrs = NULL;
+ if ( ludp->lud_dn != NULL &&
+ ( attrs = strchr( ludp->lud_dn, '?' )) != NULL ) {
+ /* terminate dn; point to start of attrs. */
+ *attrs++ = '\0';
+
+ /* scan for '?' that marks end of attrs and begin. of scope */
+ if (( p = strchr( attrs, '?' )) != NULL ) {
+ /*
+ * terminate attrs; point to start of scope and scan for
+ * '?' that marks end of scope and begin. of filter
+ */
+ *p++ = '\0';
+ scope = p;
+
+ if (( p = strchr( scope, '?' )) != NULL ) {
+ /* terminate scope; point to start of filter */
+ *p++ = '\0';
+ if ( *p != '\0' ) {
+ ludp->lud_filter = p;
+ /*
+ * scan for the '?' that marks the end
+ * of the filter and the start of any
+ * extensions
+ */
+ if (( p = strchr( ludp->lud_filter, '?' ))
+ != NULL ) {
+ *p++ = '\0'; /* term. filter */
+ extensions = p;
+ }
+ if ( *ludp->lud_filter == '\0' ) {
+ ludp->lud_filter = NULL;
+ } else {
+ nsldapi_hex_unescape( ludp->lud_filter );
+ }
+ }
+ }
+
+ if ( strcasecmp( scope, "one" ) == 0 ) {
+ ludp->lud_scope = LDAP_SCOPE_ONELEVEL;
+ } else if ( strcasecmp( scope, "base" ) == 0 ) {
+ ludp->lud_scope = LDAP_SCOPE_BASE;
+ } else if ( strcasecmp( scope, "sub" ) == 0 ) {
+ ludp->lud_scope = LDAP_SCOPE_SUBTREE;
+ } else if ( *scope != '\0' ) {
+ ldap_free_urldesc( ludp );
+ return( LDAP_URL_ERR_BADSCOPE );
+ }
+ }
+ }
+
+ if ( ludp->lud_dn != NULL ) {
+ nsldapi_hex_unescape( ludp->lud_dn );
+ }
+
+ /*
+ * if attrs list was included, turn it into a null-terminated array
+ */
+ if ( attrs != NULL && *attrs != '\0' ) {
+ nsldapi_hex_unescape( attrs );
+ for ( nattrs = 1, p = attrs; *p != '\0'; ++p ) {
+ if ( *p == ',' ) {
+ ++nattrs;
+ }
+ }
+
+ if (( ludp->lud_attrs = (char **)NSLDAPI_CALLOC( nattrs + 1,
+ sizeof( char * ))) == NULL ) {
+ ldap_free_urldesc( ludp );
+ return( LDAP_URL_ERR_MEM );
+ }
+
+ for ( i = 0, p = attrs; i < nattrs; ++i ) {
+ ludp->lud_attrs[ i ] = p;
+ if (( p = strchr( p, ',' )) != NULL ) {
+ *p++ ='\0';
+ }
+ nsldapi_hex_unescape( ludp->lud_attrs[ i ] );
+ }
+ }
+
+ /* if extensions list was included, check for critical ones */
+ if ( extensions != NULL && *extensions != '\0' ) {
+ /* Note: at present, we do not recognize ANY extensions */
+ at_start = 1;
+ for ( p = extensions; *p != '\0'; ++p ) {
+ if ( at_start ) {
+ if ( *p == '!' ) { /* critical extension */
+ ldap_free_urldesc( ludp );
+ return( LDAP_URL_UNRECOGNIZED_CRITICAL_EXTENSION );
+ }
+ at_start = 0;
+ } else if ( *p == ',' ) {
+ at_start = 1;
+ }
+ }
+ }
+
+ *ludpp = ludp;
+
+ return( 0 );
+}
+
+
+void
+LDAP_CALL
+ldap_free_urldesc( LDAPURLDesc *ludp )
+{
+ if ( ludp != NULLLDAPURLDESC ) {
+ if ( ludp->lud_string != NULL ) {
+ NSLDAPI_FREE( ludp->lud_string );
+ }
+ if ( ludp->lud_attrs != NULL ) {
+ NSLDAPI_FREE( ludp->lud_attrs );
+ }
+ NSLDAPI_FREE( ludp );
+ }
+}
+
+
+int
+LDAP_CALL
+ldap_url_search( LDAP *ld, const char *url, int attrsonly )
+{
+ int err, msgid;
+ LDAPURLDesc *ludp;
+ BerElement *ber;
+ LDAPServer *srv;
+ char *host;
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( -1 ); /* punt */
+ }
+
+ if ( ldap_url_parse( url, &ludp ) != 0 ) {
+ LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
+ return( -1 );
+ }
+
+ LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
+ msgid = ++ld->ld_msgid;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
+
+ if ( nsldapi_build_search_req( ld, ludp->lud_dn, ludp->lud_scope,
+ ludp->lud_filter, ludp->lud_attrs, attrsonly, NULL, NULL,
+ -1, -1, msgid, &ber ) != LDAP_SUCCESS ) {
+ return( -1 );
+ }
+
+ err = 0;
+
+ if ( ludp->lud_host == NULL ) {
+ host = ld->ld_defhost;
+ } else {
+ host = ludp->lud_host;
+ }
+
+ if (( srv = (LDAPServer *)NSLDAPI_CALLOC( 1, sizeof( LDAPServer )))
+ == NULL || ( host != NULL &&
+ ( srv->lsrv_host = nsldapi_strdup( host )) == NULL )) {
+ if ( srv != NULL ) {
+ NSLDAPI_FREE( srv );
+ }
+ LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
+ err = -1;
+ } else {
+ if ( ludp->lud_port != 0 ) {
+ /* URL includes a port - use it */
+ srv->lsrv_port = ludp->lud_port;
+ } else if ( ludp->lud_host == NULL ) {
+ /* URL has no port or host - use port from ld */
+ srv->lsrv_port = ld->ld_defport;
+ } else if (( ludp->lud_options & LDAP_URL_OPT_SECURE ) == 0 ) {
+ /* ldap URL has a host but no port - use std. port */
+ srv->lsrv_port = LDAP_PORT;
+ } else {
+ /* ldaps URL has a host but no port - use std. port */
+ srv->lsrv_port = LDAPS_PORT;
+ }
+ }
+
+ if (( ludp->lud_options & LDAP_URL_OPT_SECURE ) != 0 ) {
+ srv->lsrv_options |= LDAP_SRV_OPT_SECURE;
+ }
+
+ if ( err != 0 ) {
+ ber_free( ber, 1 );
+ } else {
+ err = nsldapi_send_server_request( ld, ber, msgid, NULL, srv,
+ NULL, NULL, 1 );
+ }
+
+ ldap_free_urldesc( ludp );
+ return( err );
+}
+
+
+int
+LDAP_CALL
+ldap_url_search_st( LDAP *ld, const char *url, int attrsonly,
+ struct timeval *timeout, LDAPMessage **res )
+{
+ int msgid;
+
+ /*
+ * It is an error to pass in a zero'd timeval.
+ */
+ if ( timeout != NULL && timeout->tv_sec == 0 &&
+ timeout->tv_usec == 0 ) {
+ if ( ld != NULL ) {
+ LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
+ }
+ if ( res != NULL ) {
+ *res = NULL;
+ }
+ return( LDAP_PARAM_ERROR );
+ }
+
+ if (( msgid = ldap_url_search( ld, url, attrsonly )) == -1 ) {
+ return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
+ }
+
+ if ( ldap_result( ld, msgid, 1, timeout, res ) == -1 ) {
+ return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
+ }
+
+ if ( LDAP_GET_LDERRNO( ld, NULL, NULL ) == LDAP_TIMEOUT ) {
+ (void) ldap_abandon( ld, msgid );
+ LDAP_SET_LDERRNO( ld, LDAP_TIMEOUT, NULL, NULL );
+ return( LDAP_TIMEOUT );
+ }
+
+ return( ldap_result2error( ld, *res, 0 ));
+}
+
+
+int
+LDAP_CALL
+ldap_url_search_s( LDAP *ld, const char *url, int attrsonly, LDAPMessage **res )
+{
+ int msgid;
+
+ if (( msgid = ldap_url_search( ld, url, attrsonly )) == -1 ) {
+ return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
+ }
+
+ if ( ldap_result( ld, msgid, 1, (struct timeval *)NULL, res ) == -1 ) {
+ return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
+ }
+
+ return( ldap_result2error( ld, *res, 0 ));
+}
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