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-rw-r--r--ldap/libraries/libldif/fileurl.c326
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diff --git a/ldap/libraries/libldif/fileurl.c b/ldap/libraries/libldif/fileurl.c
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--- a/ldap/libraries/libldif/fileurl.c
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-/** BEGIN COPYRIGHT BLOCK
- * This Program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free Software
- * Foundation; version 2 of the License.
- *
- * This Program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * In addition, as a special exception, Red Hat, Inc. gives You the additional
- * right to link the code of this Program with code not covered under the GNU
- * General Public License ("Non-GPL Code") and to distribute linked combinations
- * including the two, subject to the limitations in this paragraph. Non-GPL Code
- * permitted under this exception must only link to the code of this Program
- * through those well defined interfaces identified in the file named EXCEPTION
- * found in the source code files (the "Approved Interfaces"). The files of
- * Non-GPL Code may instantiate templates or use macros or inline functions from
- * the Approved Interfaces without causing the resulting work to be covered by
- * the GNU General Public License. Only Red Hat, Inc. may make changes or
- * additions to the list of Approved Interfaces. You must obey the GNU General
- * Public License in all respects for all of the Program code and other code used
- * in conjunction with the Program except the Non-GPL Code covered by this
- * exception. If you modify this file, you may extend this exception to your
- * version of the file, but you are not obligated to do so. If you do not wish to
- * provide this exception without modification, you must delete this exception
- * statement from your version and license this file solely under the GPL without
- * exception.
- *
- *
- * Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
- * Copyright (C) 2005 Red Hat, Inc.
- * All rights reserved.
- * END COPYRIGHT BLOCK **/
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-/*
- * LDIF tools fileurl.c -- functions for handling file URLs.
- * Used by ldif_parse_line.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include "fileurl.h"
-#include <ctype.h> /* for isalpha() */
-
-static int str_starts_with( char *s, char *prefix );
-static void hex_unescape( char *s );
-static int unhex( char c );
-static void strcpy_escaped_and_convert( char *s1, char *s2 );
-
-/*
- * Convert a file URL to a local path.
- *
- * If successful, LDIF_FILEURL_SUCCESS is returned and *localpathp is
- * set point to an allocated string. If not, an different LDIF_FILEURL_
- * error code is returned.
- *
- * See RFCs 1738 and 2396 for a specification for file URLs... but
- * Netscape Navigator seems to be a bit more lenient in what it will
- * accept, especially on Windows).
- *
- * This function parses file URLs of these three forms:
- *
- * file:///path
- * file:/path
- * file://localhost/path
- * file://host/path (rejected with a ...NONLOCAL error)
- *
- * On Windows, we convert leading drive letters of the form C| to C:
- * and if a drive letter is present we strip off the slash that precedes
- * path. Otherwise, the leading slash is returned.
- *
- */
-int
-ldif_fileurl2path( char *fileurl, char **localpathp )
-{
- char *path;
-
- /*
- * Make sure this is a file name or URL we can handle.
- */
- if ( *fileurl == '/' ||
- ( isalpha( fileurl[0] ) && ( fileurl[1] == '|' || fileurl[1] == ':' ) ) ) {
- path = fileurl;
- goto path_ready;
- } else if ( !str_starts_with( fileurl, "file:" )) {
- return( LDIF_FILEURL_NOTAFILEURL );
- }
-
- path = fileurl + 5; /* skip past "file:" scheme prefix */
-
- if ( *path != '/' ) {
- return( LDIF_FILEURL_MISSINGPATH );
- }
-
- ++path; /* skip past '/' at end of "file:/" */
-
- if ( *path == '/' ) {
- ++path; /* remainder is now host/path or /path */
- if ( *path != '/' ) {
- /*
- * Make sure it is for the local host.
- */
- if ( str_starts_with( path, "localhost/" )) {
- path += 9;
- } else {
- return( LDIF_FILEURL_NONLOCAL );
- }
- }
- } else { /* URL is of the form file:/path */
- --path;
- }
-
- /*
- * The remainder is now of the form /path. On Windows, skip past the
- * leading slash if a drive letter is present.
- */
-#ifdef _WIN32
- if ( isalpha( path[1] ) && ( path[2] == '|' || path[2] == ':' )) {
- ++path;
- }
-#endif /* _WIN32 */
-
-
- path_ready:
- /*
- * Duplicate the path so we can safely alter it.
- * Unescape any %HH sequences.
- */
- if (( path = strdup( path )) == NULL ) {
- return( LDIF_FILEURL_NOMEMORY );
- }
- hex_unescape( path );
-
-#ifdef _WIN32
- /*
- * Convert forward slashes to backslashes for Windows. Also,
- * if we see a drive letter / vertical bar combination (e.g., c|)
- * at the beginning of the path, replace the '|' with a ':'.
- */
- {
- char *p;
-
- for ( p = path; *p != '\0'; ++p ) {
- if ( *p == '/' ) {
- *p = '\\';
- }
- }
- }
-
- if ( isalpha( path[0] ) && path[1] == '|' ) {
- path[1] = ':';
- }
-#endif /* _WIN32 */
-
- *localpathp = path;
- return( LDIF_FILEURL_SUCCESS );
-}
-
-
-/*
- * Convert a local path to a file URL.
- *
- * If successful, LDIF_FILEURL_SUCCESS is returned and *urlp is
- * set point to an allocated string. If not, an different LDIF_FILEURL_
- * error code is returned. At present, the only possible error is
- * LDIF_FILEURL_NOMEMORY.
- *
- * This function produces file URLs of the form file:path.
- *
- * On Windows, we convert leading drive letters to C|.
- *
- */
-int
-ldif_path2fileurl( char *path, char **urlp )
-{
- char *p, *url, *prefix ="file:";
-
- if ( NULL == path ) {
- path = "/";
- }
-
- /*
- * Allocate space for the URL, taking into account that path may
- * expand during the hex escaping process.
- */
- if (( url = malloc( strlen( prefix ) + 3 * strlen( path ) + 1 )) == NULL ) {
- return( LDIF_FILEURL_NOMEMORY );
- }
-
- strcpy( url, prefix );
- p = url + strlen( prefix );
-
-#ifdef _WIN32
- /*
- * On Windows, convert leading drive letters (e.g., C:) to the correct URL
- * syntax (e.g., C|).
- */
- if ( isalpha( path[0] ) && path[1] == ':' ) {
- *p++ = path[0];
- *p++ = '|';
- path += 2;
- *p = '\0';
- }
-#endif /* _WIN32 */
-
- /*
- * Append the path, encoding any URL-special characters using the %HH
- * convention.
- * On Windows, convert backwards slashes in the path to forward ones.
- */
- strcpy_escaped_and_convert( p, path );
-
- *urlp = url;
- return( LDIF_FILEURL_SUCCESS );
-}
-
-
-/*
- * Return a non-zero value if the string s begins with prefix and zero if not.
- */
-static int
-str_starts_with( char *s, char *prefix )
-{
- size_t prefix_len;
-
- if ( s == NULL || prefix == NULL ) {
- return( 0 );
- }
-
- prefix_len = strlen( prefix );
- if ( strlen( s ) < prefix_len ) {
- return( 0 );
- }
-
- return( strncmp( s, prefix, prefix_len ) == 0 );
-}
-
-
-/*
- * Remove URL hex escapes from s... done in place. The basic concept for
- * this routine is borrowed from the WWW library HTUnEscape() routine.
- *
- */
-static void
-hex_unescape( char *s )
-{
- char *p;
-
- for ( p = s; *s != '\0'; ++s ) {
- if ( *s == '%' ) {
- if ( *++s != '\0' ) {
- *p = unhex( *s ) << 4;
- }
- if ( *++s != '\0' ) {
- *p++ += unhex( *s );
- }
- } else {
- *p++ = *s;
- }
- }
-
- *p = '\0';
-}
-
-
-/*
- * Return the integer equivalent of one hex digit (in c).
- *
- */
-static int
-unhex( char c )
-{
- return( c >= '0' && c <= '9' ? c - '0'
- : c >= 'A' && c <= 'F' ? c - 'A' + 10
- : c - 'a' + 10 );
-}
-
-
-#define HREF_CHAR_ACCEPTABLE( c ) (( c >= '-' && c <= '9' ) || \
- ( c >= '@' && c <= 'Z' ) || \
- ( c == '_' ) || \
- ( c >= 'a' && c <= 'z' ))
-
-/*
- * Like strcat(), except if any URL-special characters are found in s2
- * they are escaped using the %HH convention and backslash characters are
- * converted to forward slashes on Windows.
- *
- * Maximum space needed in s1 is 3 * strlen( s2 ) + 1.
- *
- */
-static void
-strcpy_escaped_and_convert( char *s1, char *s2 )
-{
- char *p, *q;
- char *hexdig = "0123456789ABCDEF";
-
- p = s1 + strlen( s1 );
- for ( q = s2; *q != '\0'; ++q ) {
-#ifdef _WIN32
- if ( *q == '\\' ) {
- *p++ = '/';
- } else
-#endif /* _WIN32 */
-
- if ( HREF_CHAR_ACCEPTABLE( *q )) {
- *p++ = *q;
- } else {
- *p++ = '%';
- *p++ = hexdig[ 0x0F & ((*(unsigned char*)q) >> 4) ];
- *p++ = hexdig[ 0x0F & *q ];
- }
- }
-
- *p = '\0';
-}
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