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      1 /* ***** BEGIN LICENSE BLOCK *****
      2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
      3  *
      4  * The contents of this file are subject to the Mozilla Public License Version
      5  * 1.1 (the "License"); you may not use this file except in compliance with
      6  * the License. You may obtain a copy of the License at
      7  * http://www.mozilla.org/MPL/
      8  *
      9  * Software distributed under the License is distributed on an "AS IS" basis,
     10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
     11  * for the specific language governing rights and limitations under the
     12  * License.
     13  *
     14  * The Original Code is Camino code.
     15  *
     16  * The Initial Developer of the Original Code is
     17  * Netscape Communications Corporation.
     18  * Portions created by the Initial Developer are Copyright (C) 2002
     19  * the Initial Developer. All Rights Reserved.
     20  *
     21  * Contributor(s):
     22  *   Nate Weaver (Wevah) - wevah (at) derailer.org
     23  *
     24  * Alternatively, the contents of this file may be used under the terms of
     25  * either the GNU General Public License Version 2 or later (the "GPL"), or
     26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
     27  * in which case the provisions of the GPL or the LGPL are applicable instead
     28  * of those above. If you wish to allow use of your version of this file only
     29  * under the terms of either the GPL or the LGPL, and not to allow others to
     30  * use your version of this file under the terms of the MPL, indicate your
     31  * decision by deleting the provisions above and replace them with the notice
     32  * and other provisions required by the GPL or the LGPL. If you do not delete
     33  * the provisions above, a recipient may use your version of this file under
     34  * the terms of any one of the MPL, the GPL or the LGPL.
     35  *
     36  * ***** END LICENSE BLOCK ***** */
     37 
     38 #import "NSURL+Utils.h"
     39 
     40 
     41 @implementation NSURL (CaminoExtensions)
     42 
     43 + (NSURL*)decodeLocalFileURL:(NSURL*)url
     44 {
     45   NSString* urlPathString = [url path];
     46   NSString* ext = [[urlPathString pathExtension] lowercaseString];
     47   OSType fileType = NSHFSTypeCodeFromFileType(NSHFSTypeOfFile(urlPathString));
     48 
     49   if ([ext isEqualToString:@"url"] || fileType == 'LINK') {
     50     url = [NSURL URLFromIEURLFile:urlPathString];
     51   }
     52   else if ([ext isEqualToString:@"webloc"] || [ext isEqualToString:@"ftploc"] ||
     53            fileType == 'ilht' || fileType == 'ilft')
     54   {
     55     url = [NSURL URLFromInetloc:urlPathString];
     56   }
     57 
     58   return url;
     59 }
     60 
     61 //
     62 // Reads the URL from a .webloc/.ftploc file.
     63 // Returns the URL, or nil on failure.
     64 //
     65 +(NSURL*)URLFromInetloc:(NSString*)inFile
     66 {
     67   FSRef ref;
     68   NSURL *ret = nil;
     69 
     70   if (inFile && FSPathMakeRef((UInt8 *)[inFile fileSystemRepresentation], &ref, NULL) == noErr) {
     71     short resRef;
     72 
     73     resRef = FSOpenResFile(&ref, fsRdPerm);
     74 
     75     if (resRef != -1) { // Has resouce fork.
     76       Handle urlResHandle;
     77 
     78       if ((urlResHandle = Get1Resource('url ', 256))) { // Has 'url ' resource with ID 256.
     79         long size;
     80 
     81         size = GetMaxResourceSize(urlResHandle);
     82 // Begin Google Modified
     83 //        ret = [NSURL URLWithString:[NSString stringWithCString:(char *)*urlResHandle length:size]];
     84         NSString *urlString = [[[NSString alloc] initWithBytes:(void *)*urlResHandle
     85                                                         length:size
     86                                                       encoding:NSMacOSRomanStringEncoding]  // best guess here
     87                                autorelease];
     88         ret = [NSURL URLWithString:urlString];
     89 // End Google Modified
     90       }
     91 
     92       CloseResFile(resRef);
     93     }
     94 
     95     if (!ret) { // Look for valid plist data.
     96       NSDictionary *plist;
     97       if ((plist = [[NSDictionary alloc] initWithContentsOfFile:inFile])) {
     98         ret = [NSURL URLWithString:[plist objectForKey:@"URL"]];
     99         [plist release];
    100       }
    101     }
    102   }
    103 
    104   return ret;
    105 }
    106 
    107 //
    108 // Reads the URL from a .url file.
    109 // Returns the URL or nil on failure.
    110 //
    111 +(NSURL*)URLFromIEURLFile:(NSString*)inFile
    112 {
    113   NSURL *ret = nil;
    114 
    115   // Is this really an IE .url file?
    116   if (inFile) {
    117     NSCharacterSet *newlines = [NSCharacterSet characterSetWithCharactersInString:@"\r\n"];
    118     // Begin Google Modified
    119 //    NSScanner *scanner = [NSScanner scannerWithString:[NSString stringWithContentsOfFile:inFile]];
    120     NSString *fileString = [NSString stringWithContentsOfFile:inFile
    121                                                      encoding:NSWindowsCP1252StringEncoding  // best guess here
    122                                                         error:nil];
    123     NSScanner *scanner = [NSScanner scannerWithString:fileString];
    124     // End Google Modified
    125     [scanner scanUpToString:@"[InternetShortcut]" intoString:nil];
    126 
    127     if ([scanner scanString:@"[InternetShortcut]" intoString:nil]) {
    128       // Scan each non-empty line in this section. We don't need to explicitly scan the newlines or
    129       // whitespace because NSScanner ignores these by default.
    130       NSString *line;
    131 
    132       while ([scanner scanUpToCharactersFromSet:newlines intoString:&line]) {
    133         if ([line hasPrefix:@"URL="]) {
    134           ret = [NSURL URLWithString:[line substringFromIndex:4]];
    135           break;
    136         }
    137         else if ([line hasPrefix:@"["]) {
    138           // This is the start of a new section, so if we haven't found an URL yet, we should bail.
    139           break;
    140         }
    141       }
    142     }
    143   }
    144 
    145   return ret;
    146 }
    147 
    148 @end
    149