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/*
* Copyright (C) 2012, 2014 Igalia S.L.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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 "UserAgentGtk.h"
#include "URL.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/text/StringBuilder.h>
#if OS(UNIX)
#include <sys/utsname.h>
#endif
namespace WebCore {
class UserAgentQuirks {
public:
enum UserAgentQuirk {
NeedsMacintoshPlatform,
NumUserAgentQuirks
};
UserAgentQuirks()
: m_quirks(0)
{
COMPILE_ASSERT(sizeof(m_quirks) * 8 >= NumUserAgentQuirks, not_enough_room_for_quirks);
}
void add(UserAgentQuirk quirk)
{
ASSERT(quirk >= 0);
ASSERT_WITH_SECURITY_IMPLICATION(quirk < NumUserAgentQuirks);
m_quirks |= (1 << quirk);
}
bool contains(UserAgentQuirk quirk) const
{
return m_quirks & (1 << quirk);
}
bool isEmpty() const { return !m_quirks; }
private:
uint32_t m_quirks;
};
static const char* cpuDescriptionForUAString()
{
#if CPU(PPC) || CPU(PPC64)
return "PPC";
#elif CPU(X86) || CPU(X86_64)
return "Intel";
#elif CPU(ARM) || CPU(ARM64)
return "ARM";
#else
return "Unknown";
#endif
}
static const char* platformForUAString()
{
#if PLATFORM(X11)
return "X11";
#elif OS(WINDOWS)
return "";
#elif PLATFORM(MAC)
return "Macintosh";
#elif defined(GDK_WINDOWING_DIRECTFB)
return "DirectFB";
#else
return "Unknown";
#endif
}
static const String platformVersionForUAString()
{
#if OS(UNIX)
struct utsname name;
uname(&name);
static NeverDestroyed<const String> uaOSVersion(String::format("%s %s", name.sysname, name.machine));
return uaOSVersion;
#else
// We will always claim to be Safari in Mac OS X, since Safari in Linux triggers the iOS path on some websites.
static NeverDestroyed<const String> uaOSVersion(String::format("%s Mac OS X", cpuDescriptionForUAString()));
return uaOSVersion;
#endif
}
static const String versionForUAString()
{
static NeverDestroyed<const String> uaVersion(String::format("%i.%i", USER_AGENT_GTK_MAJOR_VERSION, USER_AGENT_GTK_MINOR_VERSION));
return uaVersion;
}
static String buildUserAgentString(const UserAgentQuirks& quirks)
{
StringBuilder uaString;
uaString.appendLiteral("Mozilla/5.0 ");
uaString.append('(');
if (quirks.contains(UserAgentQuirks::NeedsMacintoshPlatform))
uaString.appendLiteral("Macintosh");
else
uaString.append(platformForUAString());
uaString.appendLiteral("; ");
if (quirks.contains(UserAgentQuirks::NeedsMacintoshPlatform)) {
uaString.append(cpuDescriptionForUAString());
uaString.appendLiteral(" Mac OS X");
} else
uaString.append(platformVersionForUAString());
uaString.appendLiteral(") AppleWebKit/");
uaString.append(versionForUAString());
// Version/X is mandatory *before* Safari/X to be a valid Safari UA. See
// https://bugs.webkit.org/show_bug.cgi?id=133403 for details.
uaString.appendLiteral(" (KHTML, like Gecko) Version/8.0 Safari/");
uaString.append(versionForUAString());
return uaString.toString();
}
static const String standardUserAgentStatic()
{
static NeverDestroyed<const String> uaStatic(buildUserAgentString(UserAgentQuirks()));
return uaStatic;
}
String standardUserAgent(const String& applicationName, const String& applicationVersion)
{
// Create a default user agent string with a liberal interpretation of
// https://developer.mozilla.org/en-US/docs/User_Agent_Strings_Reference
//
// Forming a functional user agent is really difficult. We must mention Safari, because some
// sites check for that when detecting WebKit browsers. Additionally some sites assume that
// browsers that are "Safari" but not running on OS X are the Safari iOS browse. Getting this
// wrong can cause sites to load the wrong JavaScript, CSS, or custom fonts. In some cases
// sites won't load resources at all.
if (applicationName.isEmpty())
return standardUserAgentStatic();
String finalApplicationVersion = applicationVersion;
if (finalApplicationVersion.isEmpty())
finalApplicationVersion = versionForUAString();
return standardUserAgentStatic() + ' ' + applicationName + '/' + finalApplicationVersion;
}
String standardUserAgentForURL(const URL& url)
{
ASSERT(!url.isNull());
UserAgentQuirks quirks;
if (url.host().endsWith(".yahoo.com")) {
// www.yahoo.com redirects to the mobile version when Linux is present in the UA,
// use always Macintosh as platform. See https://bugs.webkit.org/show_bug.cgi?id=125444.
quirks.add(UserAgentQuirks::NeedsMacintoshPlatform);
}
// The null string means we don't need a specific UA for the given URL.
return quirks.isEmpty() ? String() : buildUserAgentString(quirks);
}
} // namespace WebCore
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