CyteKit/URLProtocol.mm

   1 /* Cydia - iPhone UIKit Front-End for Debian APT
   2  * Copyright (C) 2008-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cydia is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cydia is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cydia.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "CyteKit/UCPlatform.h"
  23
  24 #include "CyteKit/URLProtocol.h"
  25
  26 #include "iPhonePrivate.h"
  27 #include <Menes/ObjectHandle.h>
  28
  29 @implementation CyteURLProtocol {
  30 }
  31
  32 + (NSString *) scheme {
  33     return NULL;
  34 }
  35
  36 + (BOOL) canInitWithRequest:(NSURLRequest *)request {
  37     NSURL *url([request URL]);
  38     if (url == nil)
  39         return NO;
  40
  41     auto local([self scheme]);
  42     _assert(local != NULL);
  43
  44     NSString *scheme([[url scheme] lowercaseString]);
  45     if (scheme != nil && [scheme isEqualToString:local])
  46         return YES;
  47     if ([[url absoluteString] hasPrefix:[NSString stringWithFormat:@"about:%@-", local]])
  48         return YES;
  49
  50     return NO;
  51 }
  52
  53 + (NSURLRequest *) canonicalRequestForRequest:(NSURLRequest *)request {
  54     return request;
  55 }
  56
  57 - (void) _returnPNGWithImage:(UIImage *)icon forRequest:(NSURLRequest *)request {
  58     id<NSURLProtocolClient> client([self client]);
  59     if (icon == nil)
  60         [client URLProtocol:self didFailWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorFileDoesNotExist userInfo:nil]];
  61     else {
  62         NSData *data(UIImagePNGRepresentation(icon));
  63
  64         NSURLResponse *response([[[NSURLResponse alloc] initWithURL:[request URL] MIMEType:@"image/png" expectedContentLength:-1 textEncodingName:nil] autorelease]);
  65         [client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];
  66         [client URLProtocol:self didLoadData:data];
  67         [client URLProtocolDidFinishLoading:self];
  68     }
  69 }
  70
  71 - (bool) loadForPath:(NSString *)path ofRequest:(NSURLRequest *)request {
  72     return false;
  73 }
  74
  75 - (void) startLoading {
  76     id<NSURLProtocolClient> client([self client]);
  77     NSURLRequest *request([self request]);
  78
  79     NSURL *url([request URL]);
  80     NSString *href([url absoluteString]);
  81     NSString *scheme([[url scheme] lowercaseString]);
  82
  83     NSString *path;
  84
  85     if ([scheme isEqualToString:@"cydia"])
  86         path = [href substringFromIndex:8];
  87     else if ([scheme isEqualToString:@"about"])
  88         path = [href substringFromIndex:12];
  89     else _assert(false);
  90
  91     if (![self loadForPath:path ofRequest:request])
  92         [client URLProtocol:self didFailWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorResourceUnavailable userInfo:nil]];
  93 }
  94
  95 - (void) stopLoading {
  96 }
  97
  98 @end