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-rw-r--r--ldap/c-sdk/libldap/sortctrl.c438
1 files changed, 438 insertions, 0 deletions
diff --git a/ldap/c-sdk/libldap/sortctrl.c b/ldap/c-sdk/libldap/sortctrl.c
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+/* ***** 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 ***** */
+#include "ldap-int.h"
+
+/* ldap_create_sort_control:
+
+ Parameters are
+
+ ld LDAP pointer to the desired connection
+
+ sortKeyList an array of sortkeys
+
+ ctl_iscritical Indicates whether the control is critical of not. If
+ this field is non-zero, the operation will only be car-
+ ried out if the control is recognized by the server
+ and/or client
+
+ ctrlp the address of a place to put the constructed control
+*/
+
+int
+LDAP_CALL
+ldap_create_sort_control (
+ LDAP *ld,
+ LDAPsortkey **sortKeyList,
+ const char ctl_iscritical,
+ LDAPControl **ctrlp
+)
+{
+ BerElement *ber;
+ int i, rc;
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( LDAP_PARAM_ERROR );
+ }
+
+ if ( sortKeyList == NULL || ctrlp == NULL ) {
+ LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
+ return ( LDAP_PARAM_ERROR );
+ }
+
+ /* create a ber package to hold the controlValue */
+ if ( ( nsldapi_alloc_ber_with_options( ld, &ber ) ) != LDAP_SUCCESS ) {
+ LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
+ return( LDAP_NO_MEMORY );
+ }
+
+ /* encode the start of the sequence of sequences into the ber */
+ if ( ber_printf( ber, "{" ) == -1 ) {
+ goto encoding_error_exit;
+ }
+
+ /* the sort control value will be encoded as a sequence of sequences
+ which are each encoded as one of the following: {s} or {sts} or {stb} or {ststb}
+ since the orderingRule and reverseOrder flag are both optional */
+ for ( i = 0; sortKeyList[i] != NULL; i++ ) {
+
+ /* encode the attributeType into the ber */
+ if ( ber_printf( ber, "{s", (sortKeyList[i])->sk_attrtype )
+ == -1 ) {
+ goto encoding_error_exit;
+ }
+
+ /* encode the optional orderingRule into the ber */
+ if ( (sortKeyList[i])->sk_matchruleoid != NULL ) {
+ if ( ber_printf( ber, "ts", LDAP_TAG_SK_MATCHRULE,
+ (sortKeyList[i])->sk_matchruleoid )
+ == -1 ) {
+ goto encoding_error_exit;
+ }
+ }
+
+ /* Encode the optional reverseOrder flag into the ber. */
+ /* If the flag is false, it should be absent. */
+ if ( (sortKeyList[i])->sk_reverseorder ) {
+ if ( ber_printf( ber, "tb}", LDAP_TAG_SK_REVERSE,
+ (sortKeyList[i])->sk_reverseorder ) == -1 ) {
+ goto encoding_error_exit;
+ }
+ } else {
+ if ( ber_printf( ber, "}" ) == -1 ) {
+ goto encoding_error_exit;
+ }
+ }
+ }
+
+ /* encode the end of the sequence of sequences into the ber */
+ if ( ber_printf( ber, "}" ) == -1 ) {
+ goto encoding_error_exit;
+ }
+
+ rc = nsldapi_build_control( LDAP_CONTROL_SORTREQUEST, ber, 1,
+ ctl_iscritical, ctrlp );
+
+ LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
+ return( rc );
+
+encoding_error_exit:
+ LDAP_SET_LDERRNO( ld, LDAP_ENCODING_ERROR, NULL, NULL );
+ ber_free( ber, 1 );
+ return( LDAP_ENCODING_ERROR );
+}
+
+/* ldap_parse_sort_control:
+
+ Parameters are
+
+ ld LDAP pointer to the desired connection
+
+ ctrlp An array of controls obtained from calling
+ ldap_parse_result on the set of results returned by
+ the server
+
+ result the address of a place to put the result code
+
+ attribute the address of a place to put the name of the
+ attribute which cause the operation to fail, optionally
+ returned by the server */
+
+int
+LDAP_CALL
+ldap_parse_sort_control (
+ LDAP *ld,
+ LDAPControl **ctrlp,
+ ber_int_t *result,
+ char **attribute
+)
+{
+ BerElement *ber;
+ int i, foundSortControl;
+ LDAPControl *sortCtrlp;
+ ber_len_t len;
+ ber_tag_t tag;
+ char *attr;
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || result == NULL ||
+ attribute == NULL ) {
+ return( LDAP_PARAM_ERROR );
+ }
+
+
+ /* find the sortControl in the list of controls if it exists */
+ if ( ctrlp == NULL ) {
+ LDAP_SET_LDERRNO( ld, LDAP_CONTROL_NOT_FOUND, NULL, NULL );
+ return ( LDAP_CONTROL_NOT_FOUND );
+ }
+ foundSortControl = 0;
+ for ( i = 0; (( ctrlp[i] != NULL ) && ( !foundSortControl )); i++ ) {
+ foundSortControl = !strcmp( ctrlp[i]->ldctl_oid, LDAP_CONTROL_SORTRESPONSE );
+ }
+ if ( !foundSortControl ) {
+ LDAP_SET_LDERRNO( ld, LDAP_CONTROL_NOT_FOUND, NULL, NULL );
+ return ( LDAP_CONTROL_NOT_FOUND );
+ } else {
+ /* let local var point to the sortControl */
+ sortCtrlp = ctrlp[i-1];
+ }
+
+ /* allocate a Ber element with the contents of the sort_control's struct berval */
+ if ( ( ber = ber_init( &sortCtrlp->ldctl_value ) ) == NULL ) {
+ LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
+ return( LDAP_NO_MEMORY );
+ }
+
+ /* decode the result from the Berelement */
+ if ( ber_scanf( ber, "{i", result ) == LBER_ERROR ) {
+ LDAP_SET_LDERRNO( ld, LDAP_DECODING_ERROR, NULL, NULL );
+ ber_free( ber, 1 );
+ return( LDAP_DECODING_ERROR );
+ }
+
+ /* if the server returned one, decode the attribute from the Ber element */
+ if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SR_ATTRTYPE ) {
+ if ( ber_scanf( ber, "ta", &tag, &attr ) == LBER_ERROR ) {
+ LDAP_SET_LDERRNO( ld, LDAP_DECODING_ERROR, NULL, NULL );
+ ber_free( ber, 1 );
+ return( LDAP_DECODING_ERROR );
+ }
+ *attribute = attr;
+ } else {
+ *attribute = NULL;
+ }
+
+ if ( ber_scanf( ber, "}" ) == LBER_ERROR ) {
+ LDAP_SET_LDERRNO( ld, LDAP_DECODING_ERROR, NULL, NULL );
+ ber_free( ber, 1 );
+ return( LDAP_DECODING_ERROR );
+ }
+
+ /* the ber encoding is no longer needed */
+ ber_free(ber,1);
+
+ return( LDAP_SUCCESS );
+}
+
+/* Routines for the manipulation of string-representations of sort control keylists */
+
+static int count_tokens(const char *s)
+{
+ int count = 0;
+ const char *p = s;
+ int whitespace = 1;
+ /* Loop along the string counting the number of times we see the
+ * beginning of non-whitespace. This tells us
+ * the number of tokens in the string
+ */
+ while (*p != '\0') {
+ if (whitespace) {
+ if (!isspace(*p)) {
+ whitespace = 0;
+ count++;
+ }
+ } else {
+ if (isspace(*p)) {
+ whitespace = 1;
+ }
+ }
+ p++;
+ }
+ return count;
+}
+
+
+static int read_next_token(const char **s,LDAPsortkey **key)
+{
+ char c = 0;
+ const char *pos = *s;
+ int retval = 0;
+ LDAPsortkey *new_key = NULL;
+
+ const char *matchrule_source = NULL;
+ int matchrule_size = 0;
+ const char *attrdesc_source = NULL;
+ int attrdesc_size = 0;
+ int reverse = 0;
+
+ int state = 0;
+
+ while ( ((c = *pos++) != '\0') && (state != 4) ) {
+ switch (state) {
+ case 0:
+ /* case where we've not seen the beginning of the attr yet */
+ /* If we still see whitespace, nothing to do */
+ if (!isspace(c)) {
+ /* Otherwise, something to look at */
+ /* Is it a minus sign ? */
+ if ('-' == c) {
+ reverse = 1;
+ } else {
+ attrdesc_source = pos - 1;
+ state = 1;
+ }
+ }
+ break;
+ case 1:
+ /* case where we've seen the beginning of the attr, but not the end */
+ /* Is this char either whitespace or a ';' ? */
+ if ( isspace(c) || (':' == c)) {
+ attrdesc_size = (pos - attrdesc_source) - 1;
+ if (':' == c) {
+ state = 2;
+ } else {
+ state = 4;
+ }
+ }
+ break;
+ case 2:
+ /* case where we've seen the end of the attr and want the beginning of match rule */
+ if (!isspace(c)) {
+ matchrule_source = pos - 1;
+ state = 3;
+ } else {
+ state = 4;
+ }
+ break;
+ case 3:
+ /* case where we've seen the beginning of match rule and want to find the end */
+ if (isspace(c)) {
+ matchrule_size = (pos - matchrule_source) - 1;
+ state = 4;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (3 == state) {
+ /* means we fell off the end of the string looking for the end of the marching rule */
+ matchrule_size = (pos - matchrule_source) - 1;
+ }
+
+ if (1 == state) {
+ /* means we fell of the end of the string looking for the end of the attribute */
+ attrdesc_size = (pos - attrdesc_source) - 1;
+ }
+
+ if (NULL == attrdesc_source) {
+ /* Didn't find anything */
+ return -1;
+ }
+
+ new_key = (LDAPsortkey*)NSLDAPI_MALLOC(sizeof(LDAPsortkey));
+ if (0 == new_key) {
+ return LDAP_NO_MEMORY;
+ }
+
+ /* Allocate the strings */
+ new_key->sk_attrtype = (char *)NSLDAPI_MALLOC(attrdesc_size + 1);
+ if (NULL != matchrule_source) {
+ new_key->sk_matchruleoid = (char *)NSLDAPI_MALLOC(
+ matchrule_size + 1);
+ } else {
+ new_key->sk_matchruleoid = NULL;
+ }
+ /* Copy over the strings */
+ memcpy(new_key->sk_attrtype,attrdesc_source,attrdesc_size);
+ *(new_key->sk_attrtype + attrdesc_size) = '\0';
+ if (NULL != matchrule_source) {
+ memcpy(new_key->sk_matchruleoid,matchrule_source,matchrule_size);
+ *(new_key->sk_matchruleoid + matchrule_size) = '\0';
+ }
+
+ new_key->sk_reverseorder = reverse;
+
+ *s = pos - 1;
+ *key = new_key;
+ return retval;
+}
+
+int
+LDAP_CALL
+ldap_create_sort_keylist (
+ LDAPsortkey ***sortKeyList,
+ const char *string_rep
+)
+{
+ int count = 0;
+ LDAPsortkey **pointer_array = NULL;
+ const char *current_position = NULL;
+ int retval = 0;
+ int i = 0;
+
+ /* Figure out how many there are */
+ if (NULL == string_rep) {
+ return LDAP_PARAM_ERROR;
+ }
+ if (NULL == sortKeyList) {
+ return LDAP_PARAM_ERROR;
+ }
+ count = count_tokens(string_rep);
+ if (0 == count) {
+ *sortKeyList = NULL;
+ return LDAP_PARAM_ERROR;
+ }
+ /* Allocate enough memory for the pointers */
+ pointer_array = (LDAPsortkey**)NSLDAPI_MALLOC(sizeof(LDAPsortkey*)
+ * (count + 1) );
+ if (NULL == pointer_array) {
+ return LDAP_NO_MEMORY;
+ }
+ /* Now walk along the string, allocating and filling in the LDAPsearchkey structure */
+ current_position = string_rep;
+
+ for (i = 0; i < count; i++) {
+ if (0 != (retval = read_next_token(&current_position,&(pointer_array[i])))) {
+ pointer_array[count] = NULL;
+ ldap_free_sort_keylist(pointer_array);
+ *sortKeyList = NULL;
+ return retval;
+ }
+ }
+ pointer_array[count] = NULL;
+ *sortKeyList = pointer_array;
+ return LDAP_SUCCESS;
+}
+
+void
+LDAP_CALL
+ldap_free_sort_keylist (
+ LDAPsortkey **sortKeyList
+)
+{
+ LDAPsortkey *this_one = NULL;
+ int i = 0;
+
+ if ( NULL == sortKeyList ) {
+ return;
+ }
+
+ /* Walk down the list freeing the LDAPsortkey structures */
+ for (this_one = sortKeyList[0]; this_one ; this_one = sortKeyList[++i]) {
+ /* Free the strings, if present */
+ if (NULL != this_one->sk_attrtype) {
+ NSLDAPI_FREE(this_one->sk_attrtype);
+ }
+ if (NULL != this_one->sk_matchruleoid) {
+ NSLDAPI_FREE(this_one->sk_matchruleoid);
+ }
+ NSLDAPI_FREE(this_one);
+ }
+ /* Free the pointer list */
+ NSLDAPI_FREE(sortKeyList);
+}
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