Do not crash if Safari's Info.plist can't be read.

[cydia.git] / CyteKit / URLProtocol.mm

/* Cydia - iPhone UIKit Front-End for Debian APT
 * Copyright (C) 2008-2015  Jay Freeman (saurik)
*/

/* GNU General Public License, Version 3 {{{ */
/*
 * Cydia 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, either version 3 of the License,
 * or (at your option) any later version.
 *
 * Cydia 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 Cydia.  If not, see <http://www.gnu.org/licenses/>.
**/
/* }}} */

#include "CyteKit/UCPlatform.h"

#include "CyteKit/URLProtocol.h"

#include "iPhonePrivate.h"
#include <Menes/ObjectHandle.h>

@implementation CyteURLProtocol {
}

+ (NSString *) scheme {
    return NULL;
}

+ (BOOL) canInitWithRequest:(NSURLRequest *)request {
    NSURL *url([request URL]);
    if (url == nil)
        return NO;

    auto local([self scheme]);
    _assert(local != NULL);

    NSString *scheme([[url scheme] lowercaseString]);
    if (scheme != nil && [scheme isEqualToString:local])
        return YES;
    if ([[url absoluteString] hasPrefix:[NSString stringWithFormat:@"about:%@-", local]])
        return YES;

    return NO;
}

+ (NSURLRequest *) canonicalRequestForRequest:(NSURLRequest *)request {
    return request;
}

- (void) _returnPNGWithImage:(UIImage *)icon forRequest:(NSURLRequest *)request {
    id<NSURLProtocolClient> client([self client]);
    if (icon == nil)
        [client URLProtocol:self didFailWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorFileDoesNotExist userInfo:nil]];
    else {
        NSData *data(UIImagePNGRepresentation(icon));

        NSURLResponse *response([[[NSURLResponse alloc] initWithURL:[request URL] MIMEType:@"image/png" expectedContentLength:-1 textEncodingName:nil] autorelease]);
        [client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];
        [client URLProtocol:self didLoadData:data];
        [client URLProtocolDidFinishLoading:self];
    }
}

- (bool) loadForPath:(NSString *)path ofRequest:(NSURLRequest *)request {
    return false;
}

- (void) startLoading {
    id<NSURLProtocolClient> client([self client]);
    NSURLRequest *request([self request]);

    NSURL *url([request URL]);
    NSString *href([url absoluteString]);
    NSString *scheme([[url scheme] lowercaseString]);

    NSString *path;

    if ([scheme isEqualToString:@"cydia"])
        path = [href substringFromIndex:8];
    else if ([scheme isEqualToString:@"about"])
        path = [href substringFromIndex:12];
    else _assert(false);

    if (![self loadForPath:path ofRequest:request])
        [client URLProtocol:self didFailWithError:[NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorResourceUnavailable userInfo:nil]];
}

- (void) stopLoading {
}

@end