/*

 * Copyright (C) 2005 Apple Computer, Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import "WebNSURLRequestExtras.h"

#import "WebNSURLExtras.h"

#define WebContentType  (@"Content-Type")

#define WebUserAgent    (@"User-Agent")

#define WebReferrer     (@"Referer")

@implementation NSURLRequest (WebNSURLRequestExtras)

- (NSString *)_web_HTTPReferrer

{

    return [self valueForHTTPHeaderField:WebReferrer];

}

- (NSString *)_web_HTTPContentType

{

    return [self valueForHTTPHeaderField:WebContentType];

}

- (BOOL)_web_isConditionalRequest

{

    if ([self valueForHTTPHeaderField:@"If-Match"] ||

        [self valueForHTTPHeaderField:@"If-Modified-Since"] ||

        [self valueForHTTPHeaderField:@"If-None-Match"] ||

        [self valueForHTTPHeaderField:@"If-Range"] ||

        [self valueForHTTPHeaderField:@"If-Unmodified-Since"])

        return YES;

    return NO;

}

@end

@implementation NSMutableURLRequest (WebNSURLRequestExtras)

- (void)_web_setHTTPContentType:(NSString *)contentType

{

    [self setValue:contentType forHTTPHeaderField:WebContentType];

}

- (void)_web_setHTTPReferrer:(NSString *)referrer

{

    // Do not set the referrer to a string that refers to a file URL.

    // That is a potential security hole.

    if ([referrer _webkit_isFileURL])

        return;

    // Don't allow empty Referer: headers; some servers refuse them

    if ([referrer length] == 0)

        return;

    [self setValue:referrer forHTTPHeaderField:WebReferrer];

}

- (void)_web_setHTTPUserAgent:(NSString *)userAgent

{

    [self setValue:userAgent forHTTPHeaderField:WebUserAgent];

}

@end