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-rw-r--r--libraries/libldap/url.c1650
1 files changed, 1650 insertions, 0 deletions
diff --git a/libraries/libldap/url.c b/libraries/libldap/url.c
new file mode 100644
index 0000000..dcf2aac
--- /dev/null
+++ b/libraries/libldap/url.c
@@ -0,0 +1,1650 @@
+/* LIBLDAP url.c -- LDAP URL (RFC 4516) related routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1996 Regents of the University of Michigan.
+ * All rights reserved.
+ */
+
+
+/*
+ * LDAP URLs look like this:
+ * [p]ldap[is]://host[:port][/[dn[?[attributes][?[scope][?[filter][?exts]]]]]]
+ *
+ * where:
+ * attributes is a comma separated list
+ * scope is one of these three strings: base one sub (default=base)
+ * filter is an string-represented filter as in RFC 4515
+ *
+ * e.g., ldap://host:port/dc=com?o,cn?base?(o=openldap)?extension
+ *
+ * We also tolerate URLs that look like: <ldapurl> and <URL:ldapurl>
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/ctype.h>
+
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+
+#include "ldap-int.h"
+
+/* local functions */
+static const char* skip_url_prefix LDAP_P((
+ const char *url,
+ int *enclosedp,
+ const char **scheme ));
+
+int ldap_pvt_url_scheme2proto( const char *scheme )
+{
+ assert( scheme != NULL );
+
+ if( scheme == NULL ) {
+ return -1;
+ }
+
+ if( strcmp("ldap", scheme) == 0 || strcmp("pldap", scheme) == 0 ) {
+ return LDAP_PROTO_TCP;
+ }
+
+ if( strcmp("ldapi", scheme) == 0 ) {
+ return LDAP_PROTO_IPC;
+ }
+
+ if( strcmp("ldaps", scheme) == 0 || strcmp("pldaps", scheme) == 0 ) {
+ return LDAP_PROTO_TCP;
+ }
+#ifdef LDAP_CONNECTIONLESS
+ if( strcmp("cldap", scheme) == 0 ) {
+ return LDAP_PROTO_UDP;
+ }
+#endif
+
+ return -1;
+}
+
+int ldap_pvt_url_scheme_port( const char *scheme, int port )
+{
+ assert( scheme != NULL );
+
+ if( port ) return port;
+ if( scheme == NULL ) return port;
+
+ if( strcmp("ldap", scheme) == 0 || strcmp("pldap", scheme) == 0 ) {
+ return LDAP_PORT;
+ }
+
+ if( strcmp("ldapi", scheme) == 0 ) {
+ return -1;
+ }
+
+ if( strcmp("ldaps", scheme) == 0 || strcmp("pldaps", scheme) == 0 ) {
+ return LDAPS_PORT;
+ }
+
+#ifdef LDAP_CONNECTIONLESS
+ if( strcmp("cldap", scheme) == 0 ) {
+ return LDAP_PORT;
+ }
+#endif
+
+ return -1;
+}
+
+int
+ldap_pvt_url_scheme2tls( const char *scheme )
+{
+ assert( scheme != NULL );
+
+ if( scheme == NULL ) {
+ return -1;
+ }
+
+ return strcmp("ldaps", scheme) == 0 || strcmp("pldaps", scheme) == 0;
+}
+
+int
+ldap_pvt_url_scheme2proxied( const char *scheme )
+{
+ assert( scheme != NULL );
+
+ if( scheme == NULL ) {
+ return -1;
+ }
+
+ return strcmp("pldap", scheme) == 0 || strcmp("pldaps", scheme) == 0;
+}
+
+int
+ldap_is_ldap_url( LDAP_CONST char *url )
+{
+ int enclosed;
+ const char * scheme;
+
+ if( url == NULL ) {
+ return 0;
+ }
+
+ if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
+ return 0;
+ }
+
+ return 1;
+}
+
+int
+ldap_is_ldaps_url( LDAP_CONST char *url )
+{
+ int enclosed;
+ const char * scheme;
+
+ if( url == NULL ) {
+ return 0;
+ }
+
+ if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
+ return 0;
+ }
+
+ return strcmp(scheme, "ldaps") == 0 || strcmp(scheme, "pldaps") == 0;
+}
+
+int
+ldap_is_ldapi_url( LDAP_CONST char *url )
+{
+ int enclosed;
+ const char * scheme;
+
+ if( url == NULL ) {
+ return 0;
+ }
+
+ if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
+ return 0;
+ }
+
+ return strcmp(scheme, "ldapi") == 0;
+}
+
+#ifdef LDAP_CONNECTIONLESS
+int
+ldap_is_ldapc_url( LDAP_CONST char *url )
+{
+ int enclosed;
+ const char * scheme;
+
+ if( url == NULL ) {
+ return 0;
+ }
+
+ if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
+ return 0;
+ }
+
+ return strcmp(scheme, "cldap") == 0;
+}
+#endif
+
+static const char*
+skip_url_prefix(
+ const char *url,
+ int *enclosedp,
+ const char **scheme )
+{
+ /*
+ * 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
+ */
+ const char *p;
+
+ if ( url == NULL ) {
+ return( NULL );
+ }
+
+ p = url;
+
+ /* skip leading '<' (if any) */
+ if ( *p == '<' ) {
+ *enclosedp = 1;
+ ++p;
+ } else {
+ *enclosedp = 0;
+ }
+
+ /* skip leading "URL:" (if any) */
+ if ( strncasecmp( p, LDAP_URL_URLCOLON, LDAP_URL_URLCOLON_LEN ) == 0 ) {
+ p += LDAP_URL_URLCOLON_LEN;
+ }
+
+ /* check for "ldap://" prefix */
+ if ( strncasecmp( p, LDAP_URL_PREFIX, LDAP_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "ldap://" prefix and return success */
+ p += LDAP_URL_PREFIX_LEN;
+ *scheme = "ldap";
+ return( p );
+ }
+
+ /* check for "pldap://" prefix */
+ if ( strncasecmp( p, PLDAP_URL_PREFIX, PLDAP_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "pldap://" prefix and return success */
+ p += PLDAP_URL_PREFIX_LEN;
+ *scheme = "pldap";
+ return( p );
+ }
+
+ /* check for "ldaps://" prefix */
+ if ( strncasecmp( p, LDAPS_URL_PREFIX, LDAPS_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "ldaps://" prefix and return success */
+ p += LDAPS_URL_PREFIX_LEN;
+ *scheme = "ldaps";
+ return( p );
+ }
+
+ /* check for "pldaps://" prefix */
+ if ( strncasecmp( p, PLDAPS_URL_PREFIX, PLDAPS_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "pldaps://" prefix and return success */
+ p += PLDAPS_URL_PREFIX_LEN;
+ *scheme = "pldaps";
+ return( p );
+ }
+
+ /* check for "ldapi://" prefix */
+ if ( strncasecmp( p, LDAPI_URL_PREFIX, LDAPI_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "ldapi://" prefix and return success */
+ p += LDAPI_URL_PREFIX_LEN;
+ *scheme = "ldapi";
+ return( p );
+ }
+
+#ifdef LDAP_CONNECTIONLESS
+ /* check for "cldap://" prefix */
+ if ( strncasecmp( p, LDAPC_URL_PREFIX, LDAPC_URL_PREFIX_LEN ) == 0 ) {
+ /* skip over "cldap://" prefix and return success */
+ p += LDAPC_URL_PREFIX_LEN;
+ *scheme = "cldap";
+ return( p );
+ }
+#endif
+
+ return( NULL );
+}
+
+int
+ldap_pvt_scope2bv( int scope, struct berval *bv )
+{
+ switch ( scope ) {
+ case LDAP_SCOPE_BASE:
+ BER_BVSTR( bv, "base" );
+ break;
+
+ case LDAP_SCOPE_ONELEVEL:
+ BER_BVSTR( bv, "one" );
+ break;
+
+ case LDAP_SCOPE_SUBTREE:
+ BER_BVSTR( bv, "sub" );
+ break;
+
+ case LDAP_SCOPE_SUBORDINATE:
+ BER_BVSTR( bv, "subordinate" );
+ break;
+
+ default:
+ return LDAP_OTHER;
+ }
+
+ return LDAP_SUCCESS;
+}
+
+const char *
+ldap_pvt_scope2str( int scope )
+{
+ struct berval bv;
+
+ if ( ldap_pvt_scope2bv( scope, &bv ) == LDAP_SUCCESS ) {
+ return bv.bv_val;
+ }
+
+ return NULL;
+}
+
+int
+ldap_pvt_bv2scope( struct berval *bv )
+{
+ static struct {
+ struct berval bv;
+ int scope;
+ } v[] = {
+ { BER_BVC( "one" ), LDAP_SCOPE_ONELEVEL },
+ { BER_BVC( "onelevel" ), LDAP_SCOPE_ONELEVEL },
+ { BER_BVC( "base" ), LDAP_SCOPE_BASE },
+ { BER_BVC( "sub" ), LDAP_SCOPE_SUBTREE },
+ { BER_BVC( "subtree" ), LDAP_SCOPE_SUBTREE },
+ { BER_BVC( "subord" ), LDAP_SCOPE_SUBORDINATE },
+ { BER_BVC( "subordinate" ), LDAP_SCOPE_SUBORDINATE },
+ { BER_BVC( "children" ), LDAP_SCOPE_SUBORDINATE },
+ { BER_BVNULL, -1 }
+ };
+ int i;
+
+ for ( i = 0; v[ i ].scope != -1; i++ ) {
+ if ( ber_bvstrcasecmp( bv, &v[ i ].bv ) == 0 ) {
+ return v[ i ].scope;
+ }
+ }
+
+ return( -1 );
+}
+
+int
+ldap_pvt_str2scope( const char *p )
+{
+ struct berval bv;
+
+ ber_str2bv( p, 0, 0, &bv );
+
+ return ldap_pvt_bv2scope( &bv );
+}
+
+static const char hex[] = "0123456789ABCDEF";
+
+#define URLESC_NONE 0x0000U
+#define URLESC_COMMA 0x0001U
+#define URLESC_SLASH 0x0002U
+
+static int
+hex_escape_len( const char *s, unsigned list )
+{
+ int len;
+
+ if ( s == NULL ) {
+ return 0;
+ }
+
+ for ( len = 0; s[0]; s++ ) {
+ switch ( s[0] ) {
+ /* RFC 2396: reserved */
+ case '?':
+ len += 3;
+ break;
+
+ case ',':
+ if ( list & URLESC_COMMA ) {
+ len += 3;
+ } else {
+ len++;
+ }
+ break;
+
+ case '/':
+ if ( list & URLESC_SLASH ) {
+ len += 3;
+ } else {
+ len++;
+ }
+ break;
+
+ case ';':
+ case ':':
+ case '@':
+ case '&':
+ case '=':
+ case '+':
+ case '$':
+
+ /* RFC 2396: unreserved mark */
+ case '-':
+ case '_':
+ case '.':
+ case '!':
+ case '~':
+ case '*':
+ case '\'':
+ case '(':
+ case ')':
+ len++;
+ break;
+
+ /* RFC 2396: unreserved alphanum */
+ default:
+ if ( !isalnum( (unsigned char) s[0] ) ) {
+ len += 3;
+ } else {
+ len++;
+ }
+ break;
+ }
+ }
+
+ return len;
+}
+
+static int
+hex_escape( char *buf, int len, const char *s, unsigned list )
+{
+ int i;
+ int pos;
+
+ if ( s == NULL ) {
+ return 0;
+ }
+
+ for ( pos = 0, i = 0; s[i] && pos < len; i++ ) {
+ int escape = 0;
+
+ switch ( s[i] ) {
+ /* RFC 2396: reserved */
+ case '?':
+ escape = 1;
+ break;
+
+ case ',':
+ if ( list & URLESC_COMMA ) {
+ escape = 1;
+ }
+ break;
+
+ case '/':
+ if ( list & URLESC_SLASH ) {
+ escape = 1;
+ }
+ break;
+
+ case ';':
+ case ':':
+ case '@':
+ case '&':
+ case '=':
+ case '+':
+ case '$':
+
+ /* RFC 2396: unreserved mark */
+ case '-':
+ case '_':
+ case '.':
+ case '!':
+ case '~':
+ case '*':
+ case '\'':
+ case '(':
+ case ')':
+ break;
+
+ /* RFC 2396: unreserved alphanum */
+ default:
+ if ( !isalnum( (unsigned char) s[i] ) ) {
+ escape = 1;
+ }
+ break;
+ }
+
+ if ( escape ) {
+ buf[pos++] = '%';
+ buf[pos++] = hex[ (s[i] >> 4) & 0x0f ];
+ buf[pos++] = hex[ s[i] & 0x0f ];
+
+ } else {
+ buf[pos++] = s[i];
+ }
+ }
+
+ buf[pos] = '\0';
+
+ return pos;
+}
+
+static int
+hex_escape_len_list( char **s, unsigned flags )
+{
+ int len;
+ int i;
+
+ if ( s == NULL ) {
+ return 0;
+ }
+
+ len = 0;
+ for ( i = 0; s[i] != NULL; i++ ) {
+ if ( len ) {
+ len++;
+ }
+ len += hex_escape_len( s[i], flags );
+ }
+
+ return len;
+}
+
+static int
+hex_escape_list( char *buf, int len, char **s, unsigned flags )
+{
+ int pos;
+ int i;
+
+ if ( s == NULL ) {
+ return 0;
+ }
+
+ pos = 0;
+ for ( i = 0; s[i] != NULL; i++ ) {
+ int curlen;
+
+ if ( pos ) {
+ buf[pos++] = ',';
+ len--;
+ }
+ curlen = hex_escape( &buf[pos], len, s[i], flags );
+ len -= curlen;
+ pos += curlen;
+ }
+
+ return pos;
+}
+
+static int
+desc2str_len( LDAPURLDesc *u )
+{
+ int sep = 0;
+ int len = 0;
+ int is_ipc = 0;
+ struct berval scope;
+
+ if ( u == NULL || u->lud_scheme == NULL ) {
+ return -1;
+ }
+
+ if ( !strcmp( "ldapi", u->lud_scheme )) {
+ is_ipc = 1;
+ }
+
+ if ( u->lud_exts ) {
+ len += hex_escape_len_list( u->lud_exts, URLESC_COMMA );
+ if ( !sep ) {
+ sep = 5;
+ }
+ }
+
+ if ( u->lud_filter ) {
+ len += hex_escape_len( u->lud_filter, URLESC_NONE );
+ if ( !sep ) {
+ sep = 4;
+ }
+ }
+
+ if ( ldap_pvt_scope2bv( u->lud_scope, &scope ) == LDAP_SUCCESS ) {
+ len += scope.bv_len;
+ if ( !sep ) {
+ sep = 3;
+ }
+ }
+
+ if ( u->lud_attrs ) {
+ len += hex_escape_len_list( u->lud_attrs, URLESC_NONE );
+ if ( !sep ) {
+ sep = 2;
+ }
+ }
+
+ if ( u->lud_dn && u->lud_dn[0] ) {
+ len += hex_escape_len( u->lud_dn, URLESC_NONE );
+ if ( !sep ) {
+ sep = 1;
+ }
+ };
+
+ len += sep;
+
+ if ( u->lud_port ) {
+ unsigned p = u->lud_port;
+ if ( p > 65535 )
+ return -1;
+
+ len += (p > 999 ? 5 + (p > 9999) : p > 99 ? 4 : 2 + (p > 9));
+ }
+
+ if ( u->lud_host && u->lud_host[0] ) {
+ char *ptr;
+ len += hex_escape_len( u->lud_host, URLESC_SLASH );
+ if ( !is_ipc && ( ptr = strchr( u->lud_host, ':' ))) {
+ if ( strchr( ptr+1, ':' ))
+ len += 2; /* IPv6, [] */
+ }
+ }
+
+ len += strlen( u->lud_scheme ) + STRLENOF( "://" );
+
+ return len;
+}
+
+static int
+desc2str( LDAPURLDesc *u, char *s, int len )
+{
+ int i;
+ int sep = 0;
+ int sofar = 0;
+ int is_v6 = 0;
+ int is_ipc = 0;
+ struct berval scope = BER_BVNULL;
+ char *ptr;
+
+ if ( u == NULL ) {
+ return -1;
+ }
+
+ if ( s == NULL ) {
+ return -1;
+ }
+
+ if ( u->lud_scheme && !strcmp( "ldapi", u->lud_scheme )) {
+ is_ipc = 1;
+ }
+
+ ldap_pvt_scope2bv( u->lud_scope, &scope );
+
+ if ( u->lud_exts ) {
+ sep = 5;
+ } else if ( u->lud_filter ) {
+ sep = 4;
+ } else if ( !BER_BVISEMPTY( &scope ) ) {
+ sep = 3;
+ } else if ( u->lud_attrs ) {
+ sep = 2;
+ } else if ( u->lud_dn && u->lud_dn[0] ) {
+ sep = 1;
+ }
+
+ if ( !is_ipc && u->lud_host && ( ptr = strchr( u->lud_host, ':' ))) {
+ if ( strchr( ptr+1, ':' ))
+ is_v6 = 1;
+ }
+
+ if ( u->lud_port ) {
+ sofar = sprintf( s, "%s://%s%s%s:%d", u->lud_scheme,
+ is_v6 ? "[" : "",
+ u->lud_host ? u->lud_host : "",
+ is_v6 ? "]" : "",
+ u->lud_port );
+ len -= sofar;
+
+ } else {
+ sofar = sprintf( s, "%s://", u->lud_scheme );
+ len -= sofar;
+ if ( u->lud_host && u->lud_host[0] ) {
+ if ( is_v6 ) {
+ s[sofar++] = '[';
+ len--;
+ }
+ i = hex_escape( &s[sofar], len, u->lud_host, URLESC_SLASH );
+ sofar += i;
+ len -= i;
+ if ( is_v6 ) {
+ s[sofar++] = ']';
+ len--;
+ }
+ }
+ }
+
+ assert( len >= 0 );
+
+ if ( sep < 1 ) {
+ goto done;
+ }
+
+ s[sofar++] = '/';
+ len--;
+
+ assert( len >= 0 );
+
+ if ( u->lud_dn && u->lud_dn[0] ) {
+ i = hex_escape( &s[sofar], len, u->lud_dn, URLESC_NONE );
+ sofar += i;
+ len -= i;
+
+ assert( len >= 0 );
+ }
+
+ if ( sep < 2 ) {
+ goto done;
+ }
+ s[sofar++] = '?';
+ len--;
+
+ assert( len >= 0 );
+
+ i = hex_escape_list( &s[sofar], len, u->lud_attrs, URLESC_NONE );
+ sofar += i;
+ len -= i;
+
+ assert( len >= 0 );
+
+ if ( sep < 3 ) {
+ goto done;
+ }
+ s[sofar++] = '?';
+ len--;
+
+ assert( len >= 0 );
+
+ if ( !BER_BVISNULL( &scope ) ) {
+ strcpy( &s[sofar], scope.bv_val );
+ sofar += scope.bv_len;
+ len -= scope.bv_len;
+ }
+
+ assert( len >= 0 );
+
+ if ( sep < 4 ) {
+ goto done;
+ }
+ s[sofar++] = '?';
+ len--;
+
+ assert( len >= 0 );
+
+ i = hex_escape( &s[sofar], len, u->lud_filter, URLESC_NONE );
+ sofar += i;
+ len -= i;
+
+ assert( len >= 0 );
+
+ if ( sep < 5 ) {
+ goto done;
+ }
+ s[sofar++] = '?';
+ len--;
+
+ assert( len >= 0 );
+
+ i = hex_escape_list( &s[sofar], len, u->lud_exts, URLESC_COMMA );
+ sofar += i;
+ len -= i;
+
+ assert( len >= 0 );
+
+done:
+ if ( len < 0 ) {
+ return -1;
+ }
+
+ return sofar;
+}
+
+char *
+ldap_url_desc2str( LDAPURLDesc *u )
+{
+ int len;
+ char *s;
+
+ if ( u == NULL ) {
+ return NULL;
+ }
+
+ len = desc2str_len( u );
+ if ( len < 0 ) {
+ return NULL;
+ }
+
+ /* allocate enough to hex escape everything -- overkill */
+ s = LDAP_MALLOC( len + 1 );
+
+ if ( s == NULL ) {
+ return NULL;
+ }
+
+ if ( desc2str( u, s, len ) != len ) {
+ LDAP_FREE( s );
+ return NULL;
+ }
+
+ s[len] = '\0';
+
+ return s;
+}
+
+int
+ldap_url_parse_ext( LDAP_CONST char *url_in, LDAPURLDesc **ludpp, unsigned flags )
+{
+/*
+ * Pick apart the pieces of an LDAP URL.
+ */
+
+ LDAPURLDesc *ludp;
+ char *p, *q, *r;
+ int i, enclosed, proto, is_v6 = 0;
+ const char *scheme = NULL;
+ const char *url_tmp;
+ char *url;
+
+ int check_dn = 1;
+
+ if( url_in == NULL || ludpp == NULL ) {
+ return LDAP_URL_ERR_PARAM;
+ }
+
+#ifndef LDAP_INT_IN_KERNEL
+ /* Global options may not be created yet
+ * We can't test if the global options are initialized
+ * because a call to LDAP_INT_GLOBAL_OPT() will try to allocate
+ * the options and cause infinite recursion
+ */
+ Debug1( LDAP_DEBUG_TRACE, "ldap_url_parse_ext(%s)\n", url_in );
+#endif
+
+ *ludpp = NULL; /* pessimistic */
+
+ url_tmp = skip_url_prefix( url_in, &enclosed, &scheme );
+
+ if ( url_tmp == NULL ) {
+ return LDAP_URL_ERR_BADSCHEME;
+ }
+
+ assert( scheme != NULL );
+
+ proto = ldap_pvt_url_scheme2proto( scheme );
+ if ( proto == -1 ) {
+ return LDAP_URL_ERR_BADSCHEME;
+ }
+
+ /* make working copy of the remainder of the URL */
+ url = LDAP_STRDUP( url_tmp );
+ if ( url == NULL ) {
+ return LDAP_URL_ERR_MEM;
+ }
+
+ if ( enclosed ) {
+ p = &url[strlen(url)-1];
+
+ if( *p != '>' ) {
+ LDAP_FREE( url );
+ return LDAP_URL_ERR_BADENCLOSURE;
+ }
+
+ *p = '\0';
+ }
+
+ /* allocate return struct */
+ ludp = (LDAPURLDesc *)LDAP_CALLOC( 1, sizeof( LDAPURLDesc ));
+
+ if ( ludp == NULL ) {
+ LDAP_FREE( url );
+ return LDAP_URL_ERR_MEM;
+ }
+
+ ludp->lud_next = NULL;
+ ludp->lud_host = NULL;
+ ludp->lud_port = 0;
+ ludp->lud_dn = NULL;
+ ludp->lud_attrs = NULL;
+ ludp->lud_scope = ( flags & LDAP_PVT_URL_PARSE_NODEF_SCOPE ) ? LDAP_SCOPE_BASE : LDAP_SCOPE_DEFAULT;
+ ludp->lud_filter = NULL;
+ ludp->lud_exts = NULL;
+
+ ludp->lud_scheme = LDAP_STRDUP( scheme );
+
+ if ( ludp->lud_scheme == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_MEM;
+ }
+
+ /* scan forward for '/' that marks end of hostport and begin. of dn */
+ p = strchr( url, '/' );
+ q = NULL;
+
+ if( p != NULL ) {
+ /* terminate hostport; point to start of dn */
+ *p++ = '\0';
+ } else {
+ /* check for Novell kludge, see below */
+ p = strchr( url, '?' );
+ if ( p ) {
+ *p++ = '\0';
+ q = p;
+ p = NULL;
+ }
+ }
+
+ if ( proto != LDAP_PROTO_IPC ) {
+ /* IPv6 syntax with [ip address]:port */
+ if ( *url == '[' ) {
+ r = strchr( url, ']' );
+ if ( r == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADURL;
+ }
+ *r++ = '\0';
+ q = strchr( r, ':' );
+ if ( q && q != r ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADURL;
+ }
+ is_v6 = 1;
+ } else {
+ q = strchr( url, ':' );
+ }
+
+ if ( q != NULL ) {
+ char *next;
+
+ *q++ = '\0';
+ ldap_pvt_hex_unescape( q );
+
+ if( *q == '\0' ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADURL;
+ }
+
+ ludp->lud_port = strtol( q, &next, 10 );
+ if ( next == q || next[0] != '\0' ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADURL;
+ }
+ /* check for Novell kludge */
+ if ( !p ) {
+ if ( *next != '\0' ) {
+ q = &next[1];
+ } else {
+ q = NULL;
+ }
+ }
+ }
+
+ if ( ( flags & LDAP_PVT_URL_PARSE_DEF_PORT ) && ludp->lud_port == 0 ) {
+ if ( strcmp( ludp->lud_scheme, "ldaps" ) == 0 ) {
+ ludp->lud_port = LDAPS_PORT;
+ } else {
+ ludp->lud_port = LDAP_PORT;
+ }
+ }
+ }
+
+ ldap_pvt_hex_unescape( url );
+
+ /* If [ip address]:port syntax, url is [ip and we skip the [ */
+ ludp->lud_host = LDAP_STRDUP( url + is_v6 );
+
+ if( ludp->lud_host == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_MEM;
+ }
+
+ if ( ( flags & LDAP_PVT_URL_PARSE_NOEMPTY_HOST )
+ && ludp->lud_host != NULL
+ && *ludp->lud_host == '\0' )
+ {
+ LDAP_FREE( ludp->lud_host );
+ ludp->lud_host = NULL;
+ }
+
+ /*
+ * Kludge. ldap://111.222.333.444:389??cn=abc,o=company
+ *
+ * On early Novell releases, search references/referrals were returned
+ * in this format, i.e., the dn was kind of in the scope position,
+ * but the required slash is missing. The whole thing is illegal syntax,
+ * but we need to account for it. Fortunately it can't be confused with
+ * anything real.
+ */
+ if( (p == NULL) && (q != NULL) && (*q == '?') ) {
+ /* ? immediately followed by question */
+ q++;
+ if( *q != '\0' ) {
+ /* parse dn part */
+ ldap_pvt_hex_unescape( q );
+ ludp->lud_dn = LDAP_STRDUP( q );
+
+ } else if ( !( flags & LDAP_PVT_URL_PARSE_NOEMPTY_DN ) ) {
+ ludp->lud_dn = LDAP_STRDUP( "" );
+
+ } else {
+ check_dn = 0;
+ }
+
+ if ( check_dn && ludp->lud_dn == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_MEM;
+ }
+ }
+
+ if( p == NULL ) {
+ LDAP_FREE( url );
+ *ludpp = ludp;
+ return LDAP_URL_SUCCESS;
+ }
+
+ /* scan forward for '?' that may marks end of dn */
+ q = strchr( p, '?' );
+
+ if( q != NULL ) {
+ /* terminate dn part */
+ *q++ = '\0';
+ }
+
+ if( *p != '\0' ) {
+ /* parse dn part */
+ ldap_pvt_hex_unescape( p );
+ ludp->lud_dn = LDAP_STRDUP( p );
+
+ } else if ( !( flags & LDAP_PVT_URL_PARSE_NOEMPTY_DN ) ) {
+ ludp->lud_dn = LDAP_STRDUP( "" );
+
+ } else {
+ check_dn = 0;
+ }
+
+ if( check_dn && ludp->lud_dn == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_MEM;
+ }
+
+ if( q == NULL ) {
+ /* no more */
+ LDAP_FREE( url );
+ *ludpp = ludp;
+ return LDAP_URL_SUCCESS;
+ }
+
+ /* scan forward for '?' that may marks end of attributes */
+ p = q;
+ q = strchr( p, '?' );
+
+ if( q != NULL ) {
+ /* terminate attributes part */
+ *q++ = '\0';
+ }
+
+ if( *p != '\0' ) {
+ /* parse attributes */
+ ldap_pvt_hex_unescape( p );
+ ludp->lud_attrs = ldap_str2charray( p, "," );
+
+ if( ludp->lud_attrs == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADATTRS;
+ }
+ }
+
+ if ( q == NULL ) {
+ /* no more */
+ LDAP_FREE( url );
+ *ludpp = ludp;
+ return LDAP_URL_SUCCESS;
+ }
+
+ /* scan forward for '?' that may marks end of scope */
+ p = q;
+ q = strchr( p, '?' );
+
+ if( q != NULL ) {
+ /* terminate the scope part */
+ *q++ = '\0';
+ }
+
+ if( *p != '\0' ) {
+ /* parse the scope */
+ ldap_pvt_hex_unescape( p );
+ ludp->lud_scope = ldap_pvt_str2scope( p );
+
+ if( ludp->lud_scope == -1 ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADSCOPE;
+ }
+ }
+
+ if ( q == NULL ) {
+ /* no more */
+ LDAP_FREE( url );
+ *ludpp = ludp;
+ return LDAP_URL_SUCCESS;
+ }
+
+ /* scan forward for '?' that may marks end of filter */
+ p = q;
+ q = strchr( p, '?' );
+
+ if( q != NULL ) {
+ /* terminate the filter part */
+ *q++ = '\0';
+ }
+
+ if( *p != '\0' ) {
+ /* parse the filter */
+ ldap_pvt_hex_unescape( p );
+
+ if( ! *p ) {
+ /* missing filter */
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADFILTER;
+ }
+
+ ludp->lud_filter = LDAP_STRDUP( p );
+
+ if( ludp->lud_filter == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_MEM;
+ }
+ }
+
+ if ( q == NULL ) {
+ /* no more */
+ LDAP_FREE( url );
+ *ludpp = ludp;
+ return LDAP_URL_SUCCESS;
+ }
+
+ /* scan forward for '?' that may marks end of extensions */
+ p = q;
+ q = strchr( p, '?' );
+
+ if( q != NULL ) {
+ /* extra '?' */
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADURL;
+ }
+
+ /* parse the extensions */
+ ludp->lud_exts = ldap_str2charray( p, "," );
+
+ if( ludp->lud_exts == NULL ) {
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADEXTS;
+ }
+
+ for( i=0; ludp->lud_exts[i] != NULL; i++ ) {
+ ldap_pvt_hex_unescape( ludp->lud_exts[i] );
+
+ if( *ludp->lud_exts[i] == '!' ) {
+ /* count the number of critical extensions */
+ ludp->lud_crit_exts++;
+ }
+ }
+
+ if( i == 0 ) {
+ /* must have 1 or more */
+ LDAP_FREE( url );
+ ldap_free_urldesc( ludp );
+ return LDAP_URL_ERR_BADEXTS;
+ }
+
+ /* no more */
+ *ludpp = ludp;
+ LDAP_FREE( url );
+ return LDAP_URL_SUCCESS;
+}
+
+int
+ldap_url_parse( LDAP_CONST char *url_in, LDAPURLDesc **ludpp )
+{
+ return ldap_url_parse_ext( url_in, ludpp, LDAP_PVT_URL_PARSE_HISTORIC );
+}
+
+LDAPURLDesc *
+ldap_url_dup ( LDAPURLDesc *ludp )
+{
+ LDAPURLDesc *dest;
+
+ if ( ludp == NULL ) {
+ return NULL;
+ }
+
+ dest = LDAP_MALLOC( sizeof(LDAPURLDesc) );
+ if (dest == NULL)
+ return NULL;
+
+ *dest = *ludp;
+ dest->lud_scheme = NULL;
+ dest->lud_host = NULL;
+ dest->lud_dn = NULL;
+ dest->lud_filter = NULL;
+ dest->lud_attrs = NULL;
+ dest->lud_exts = NULL;
+ dest->lud_next = NULL;
+
+ if ( ludp->lud_scheme != NULL ) {
+ dest->lud_scheme = LDAP_STRDUP( ludp->lud_scheme );
+ if (dest->lud_scheme == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ if ( ludp->lud_host != NULL ) {
+ dest->lud_host = LDAP_STRDUP( ludp->lud_host );
+ if (dest->lud_host == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ if ( ludp->lud_dn != NULL ) {
+ dest->lud_dn = LDAP_STRDUP( ludp->lud_dn );
+ if (dest->lud_dn == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ if ( ludp->lud_filter != NULL ) {
+ dest->lud_filter = LDAP_STRDUP( ludp->lud_filter );
+ if (dest->lud_filter == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ if ( ludp->lud_attrs != NULL ) {
+ dest->lud_attrs = ldap_charray_dup( ludp->lud_attrs );
+ if (dest->lud_attrs == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ if ( ludp->lud_exts != NULL ) {
+ dest->lud_exts = ldap_charray_dup( ludp->lud_exts );
+ if (dest->lud_exts == NULL) {
+ ldap_free_urldesc(dest);
+ return NULL;
+ }
+ }
+
+ return dest;
+}
+
+LDAPURLDesc *
+ldap_url_duplist (LDAPURLDesc *ludlist)
+{
+ LDAPURLDesc *dest, *tail, *ludp, *newludp;
+
+ dest = NULL;
+ tail = NULL;
+ for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
+ newludp = ldap_url_dup(ludp);
+ if (newludp == NULL) {
+ ldap_free_urllist(dest);
+ return NULL;
+ }
+ if (tail == NULL)
+ dest = newludp;
+ else
+ tail->lud_next = newludp;
+ tail = newludp;
+ }
+ return dest;
+}
+
+static int
+ldap_url_parselist_int (LDAPURLDesc **ludlist, const char *url, const char *sep, unsigned flags )
+
+{
+ int i, rc;
+ LDAPURLDesc *ludp;
+ char **urls;
+
+ assert( ludlist != NULL );
+ assert( url != NULL );
+
+ *ludlist = NULL;
+
+ if ( sep == NULL ) {
+ sep = ", ";
+ }
+
+ urls = ldap_str2charray( url, sep );
+ if (urls == NULL)
+ return LDAP_URL_ERR_MEM;
+
+ /* count the URLs... */
+ for (i = 0; urls[i] != NULL; i++) ;
+ /* ...and put them in the "stack" backward */
+ while (--i >= 0) {
+ rc = ldap_url_parse_ext( urls[i], &ludp, flags );
+ if ( rc != 0 ) {
+ ldap_charray_free( urls );
+ ldap_free_urllist( *ludlist );
+ *ludlist = NULL;
+ return rc;
+ }
+ ludp->lud_next = *ludlist;
+ *ludlist = ludp;
+ }
+ ldap_charray_free( urls );
+ return LDAP_URL_SUCCESS;
+}
+
+int
+ldap_url_parselist (LDAPURLDesc **ludlist, const char *url )
+{
+ return ldap_url_parselist_int( ludlist, url, ", ", LDAP_PVT_URL_PARSE_HISTORIC );
+}
+
+int
+ldap_url_parselist_ext (LDAPURLDesc **ludlist, const char *url, const char *sep, unsigned flags )
+{
+ return ldap_url_parselist_int( ludlist, url, sep, flags );
+}
+
+int
+ldap_url_parsehosts(
+ LDAPURLDesc **ludlist,
+ const char *hosts,
+ int port )
+{
+ int i;
+ LDAPURLDesc *ludp;
+ char **specs, *p;
+
+ assert( ludlist != NULL );
+ assert( hosts != NULL );
+
+ *ludlist = NULL;
+
+ specs = ldap_str2charray(hosts, ", ");
+ if (specs == NULL)
+ return LDAP_NO_MEMORY;
+
+ /* count the URLs... */
+ for (i = 0; specs[i] != NULL; i++) /* EMPTY */;
+
+ /* ...and put them in the "stack" backward */
+ while (--i >= 0) {
+ ludp = LDAP_CALLOC( 1, sizeof(LDAPURLDesc) );
+ if (ludp == NULL) {
+ ldap_charray_free(specs);
+ ldap_free_urllist(*ludlist);
+ *ludlist = NULL;
+ return LDAP_NO_MEMORY;
+ }
+ ludp->lud_port = port;
+ ludp->lud_host = specs[i];
+ specs[i] = NULL;
+ p = strchr(ludp->lud_host, ':');
+ if (p != NULL) {
+ /* more than one :, IPv6 address */
+ if ( strchr(p+1, ':') != NULL ) {
+ /* allow [address] and [address]:port */
+ if ( *ludp->lud_host == '[' ) {
+ p = LDAP_STRDUP(ludp->lud_host+1);
+ /* copied, make sure we free source later */
+ specs[i] = ludp->lud_host;
+ ludp->lud_host = p;
+ p = strchr( ludp->lud_host, ']' );
+ if ( p == NULL ) {
+ LDAP_FREE(ludp);
+ ldap_charray_free(specs);
+ return LDAP_PARAM_ERROR;
+ }
+ *p++ = '\0';
+ if ( *p != ':' ) {
+ if ( *p != '\0' ) {
+ LDAP_FREE(ludp);
+ ldap_charray_free(specs);
+ return LDAP_PARAM_ERROR;
+ }
+ p = NULL;
+ }
+ } else {
+ p = NULL;
+ }
+ }
+ if (p != NULL) {
+ char *next;
+
+ *p++ = 0;
+ ldap_pvt_hex_unescape(p);
+ ludp->lud_port = strtol( p, &next, 10 );
+ if ( next == p || next[0] != '\0' ) {
+ LDAP_FREE(ludp);
+ ldap_charray_free(specs);
+ return LDAP_PARAM_ERROR;
+ }
+ }
+ }
+ ldap_pvt_hex_unescape(ludp->lud_host);
+ ludp->lud_scheme = LDAP_STRDUP("ldap");
+ ludp->lud_next = *ludlist;
+ *ludlist = ludp;
+ }
+
+ /* this should be an array of NULLs now */
+ /* except entries starting with [ */
+ ldap_charray_free(specs);
+ return LDAP_SUCCESS;
+}
+
+char *
+ldap_url_list2hosts (LDAPURLDesc *ludlist)
+{
+ LDAPURLDesc *ludp;
+ int size;
+ char *s, *p, buf[32]; /* big enough to hold a long decimal # (overkill) */
+
+ if (ludlist == NULL)
+ return NULL;
+
+ /* figure out how big the string is */
+ size = 1; /* nul-term */
+ for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
+ if ( ludp->lud_host == NULL ) continue;
+ size += strlen(ludp->lud_host) + 1; /* host and space */
+ if (strchr(ludp->lud_host, ':')) /* will add [ ] below */
+ size += 2;
+ if (ludp->lud_port != 0)
+ size += sprintf(buf, ":%d", ludp->lud_port);
+ }
+ s = LDAP_MALLOC(size);
+ if (s == NULL)
+ return NULL;
+
+ p = s;
+ for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
+ if ( ludp->lud_host == NULL ) continue;
+ if (strchr(ludp->lud_host, ':')) {
+ p += sprintf(p, "[%s]", ludp->lud_host);
+ } else {
+ strcpy(p, ludp->lud_host);
+ p += strlen(ludp->lud_host);
+ }
+ if (ludp->lud_port != 0)
+ p += sprintf(p, ":%d", ludp->lud_port);
+ *p++ = ' ';
+ }
+ if (p != s)
+ p--; /* nuke that extra space */
+ *p = '\0';
+ return s;
+}
+
+char *
+ldap_url_list2urls(
+ LDAPURLDesc *ludlist )
+{
+ LDAPURLDesc *ludp;
+ int size, sofar;
+ char *s;
+
+ if ( ludlist == NULL ) {
+ return NULL;
+ }
+
+ /* figure out how big the string is */
+ for ( size = 0, ludp = ludlist; ludp != NULL; ludp = ludp->lud_next ) {
+ int len = desc2str_len( ludp );
+ if ( len < 0 ) {
+ return NULL;
+ }
+ size += len + 1;
+ }
+
+ s = LDAP_MALLOC( size );
+
+ if ( s == NULL ) {
+ return NULL;
+ }
+
+ for ( sofar = 0, ludp = ludlist; ludp != NULL; ludp = ludp->lud_next ) {
+ int len;
+
+ len = desc2str( ludp, &s[sofar], size );
+
+ if ( len < 0 ) {
+ LDAP_FREE( s );
+ return NULL;
+ }
+
+ sofar += len;
+ size -= len;
+
+ s[sofar++] = ' ';
+ size--;
+
+ assert( size >= 0 );
+ }
+
+ s[sofar - 1] = '\0';
+
+ return s;
+}
+
+void
+ldap_free_urllist( LDAPURLDesc *ludlist )
+{
+ LDAPURLDesc *ludp, *next;
+
+ for (ludp = ludlist; ludp != NULL; ludp = next) {
+ next = ludp->lud_next;
+ ldap_free_urldesc(ludp);
+ }
+}
+
+void
+ldap_free_urldesc( LDAPURLDesc *ludp )
+{
+ if ( ludp == NULL ) {
+ return;
+ }
+
+ if ( ludp->lud_scheme != NULL ) {
+ LDAP_FREE( ludp->lud_scheme );
+ }
+
+ if ( ludp->lud_host != NULL ) {
+ LDAP_FREE( ludp->lud_host );
+ }
+
+ if ( ludp->lud_dn != NULL ) {
+ LDAP_FREE( ludp->lud_dn );
+ }
+
+ if ( ludp->lud_filter != NULL ) {
+ LDAP_FREE( ludp->lud_filter);
+ }
+
+ if ( ludp->lud_attrs != NULL ) {
+ LDAP_VFREE( ludp->lud_attrs );
+ }
+
+ if ( ludp->lud_exts != NULL ) {
+ LDAP_VFREE( ludp->lud_exts );
+ }
+
+ LDAP_FREE( ludp );
+}
+
+static int
+ldap_int_is_hexpair( char *s )
+{
+ int i;
+
+ for ( i = 0; i < 2; i++ ) {
+ if ( s[i] >= '0' && s[i] <= '9' ) {
+ continue;
+ }
+
+ if ( s[i] >= 'A' && s[i] <= 'F' ) {
+ continue;
+ }
+
+ if ( s[i] >= 'a' && s[i] <= 'f' ) {
+ continue;
+ }
+
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+ldap_int_unhex( int c )
+{
+ return( c >= '0' && c <= '9' ? c - '0'
+ : c >= 'A' && c <= 'F' ? c - 'A' + 10
+ : c - 'a' + 10 );
+}
+
+void
+ldap_pvt_hex_unescape( char *s )
+{
+ /*
+ * Remove URL hex escapes from s... done in place. The basic concept for
+ * this routine is borrowed from the WWW library HTUnEscape() routine.
+ */
+ char *p,
+ *save_s = s;
+
+ for ( p = s; *s != '\0'; ++s ) {
+ if ( *s == '%' ) {
+ /*
+ * FIXME: what if '%' is followed
+ * by non-hexpair chars?
+ */
+ if ( !ldap_int_is_hexpair( s + 1 ) ) {
+ p = save_s;
+ break;
+ }
+
+ if ( *++s == '\0' ) {
+ break;
+ }
+ *p = ldap_int_unhex( *s ) << 4;
+ if ( *++s == '\0' ) {
+ break;
+ }
+ *p++ += ldap_int_unhex( *s );
+ } else {
+ *p++ = *s;
+ }
+ }
+
+ *p = '\0';
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 15:10:29 +0000