1 #pragma ident "%Z%%M% %I% %E% SMI" 2 3 /* 4 * The contents of this file are subject to the Netscape Public 5 * License Version 1.1 (the "License"); you may not use this file 6 * except in compliance with the License. You may obtain a copy of 7 * the License at http://www.mozilla.org/NPL/ 8 * 9 * Software distributed under the License is distributed on an "AS 10 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 11 * implied. See the License for the specific language governing 12 * rights and limitations under the License. 13 * 14 * The Original Code is Mozilla Communicator client code, released 15 * March 31, 1998. 16 * 17 * The Initial Developer of the Original Code is Netscape 18 * Communications Corporation. Portions created by Netscape are 19 * Copyright (C) 1998-1999 Netscape Communications Corporation. All 20 * Rights Reserved. 21 * 22 * Contributor(s): 23 */ 24 25 /* 26 * LIBLDAP unescape.c -- LDAP URL un-escape routines 27 * We also tolerate URLs that look like: <ldapurl> and <URL:ldapurl> 28 */ 29 30 #include "ldap-int.h" 31 32 33 static int unhex( char c ); 34 35 36 void 37 nsldapi_hex_unescape( char *s ) 38 { 39 /* 40 * Remove URL hex escapes from s... done in place. The basic concept for 41 * this routine is borrowed from the WWW library HTUnEscape() routine. 42 */ 43 char *p; 44 45 for ( p = s; *s != '\0'; ++s ) { 46 if ( *s == '%' ) { 47 if ( *++s == '\0' ) { 48 break; 49 } 50 *p = unhex( *s ) << 4; 51 if ( *++s == '\0' ) { 52 break; 53 } 54 *p++ += unhex( *s ); 55 56 } else { 57 *p++ = *s; 58 } 59 } 60 61 *p = '\0'; 62 } 63 64 65 static int 66 unhex( char c ) 67 { 68 return( c >= '0' && c <= '9' ? c - '0' 69 : c >= 'A' && c <= 'F' ? c - 'A' + 10 70 : c - 'a' + 10 ); 71 } 72