Source/WebCore/platform/network/HTTPValidation.cpp

/*
 * Copyright (C) 2011 Alexey Proskuryakov (ap@webkit.org)
 * Copyright (C) 2011 Google 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.
 */

#include "config.h"
#include "HTTPValidation.h"

#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

// Determines if a string is a valid token, as defined by
// "token" in section 2.2 of RFC 2616.
bool isValidHTTPToken(const String& name)
{
    unsigned length = name.length();
    for (unsigned i = 0; i < length; i++) {
        UChar c = name[i];

        if (c >= 127 || c <= 32)
            return false;

        if (c == '(' || c == ')' || c == '<' || c == '>' || c == '@'
            || c == ',' || c == ';' || c == ':' || c == '\\' || c == '\"'
            || c == '/' || c == '[' || c == ']' || c == '?' || c == '='
            || c == '{' || c == '}')
            return false;
    }

    return length > 0;
}

bool isValidHTTPHeaderValue(const String& name)
{
    // FIXME: This should really match name against
    // field-value in section 4.2 of RFC 2616.

    return !name.contains('\r') && !name.contains('\n');
}

}