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();
}
String standardUserAgent(const String& applicationName, const String& applicationVersion)
{
const String& version = ASCIILiteral(versionForUAString());
static NeverDestroyed<String> standardUserAgentString = makeString("Mozilla/5.0 (", platformForUAString(), "; ", platformVersionForUAString(),
") AppleWebKit/", version, " (KHTML, like Gecko) Version/8.0 Safari/601.2.7");
if (applicationName.isEmpty())
return standardUserAgentString;
String finalApplicationVersion = applicationVersion;
if (finalApplicationVersion.isEmpty())
finalApplicationVersion = ASCIILiteral(versionForUAString());
return standardUserAgentString + ' ' + applicationName + '/' + finalApplicationVersion;
}
static String buildUserAgentString(const UserAgentQuirks& quirks)
{
StringBuilder uaString;
uaString.appendLiteral("Mozilla/5.0 ");
uaString.append('(');
if (quirks.contains(UserAgentQuirks::NeedsMacintoshPlatform))
uaString.append(UserAgentQuirks::stringForQuirk(UserAgentQuirks::NeedsMacintoshPlatform));
else if (quirks.contains(UserAgentQuirks::NeedsLinuxDesktopPlatform))
uaString.append(UserAgentQuirks::stringForQuirk(UserAgentQuirks::NeedsLinuxDesktopPlatform));
else {
uaString.append(platformForUAString());
uaString.appendLiteral("; ");
uaString.append(platformVersionForUAString());
}
if (quirks.contains(UserAgentQuirks::NeedsFirefoxBrowser)) {
uaString.appendLiteral("; ");
uaString.append(UserAgentQuirks::firefoxRevisionString());
uaString.appendLiteral(") ");
} else {
uaString.appendLiteral(") AppleWebKit/");
uaString.append(versionForUAString());
uaString.appendLiteral(" (KHTML, like Gecko) ");
}
// Note that Chrome UAs advertise *both* Chrome and Safari.
if (quirks.contains(UserAgentQuirks::NeedsChromeBrowser)) {
uaString.append(UserAgentQuirks::stringForQuirk(UserAgentQuirks::NeedsChromeBrowser));
uaString.appendLiteral(" ");
} else if (quirks.contains(UserAgentQuirks::NeedsFirefoxBrowser)) {
uaString.append(UserAgentQuirks::stringForQuirk(UserAgentQuirks::NeedsFirefoxBrowser));
uaString.appendLiteral(" ");
}
if (!quirks.contains(UserAgentQuirks::NeedsFirefoxBrowser)) {
// 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("Version/10.0 Safari/");
uaString.append(versionForUAString());
}
return uaString.toString();
}
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 browser. 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;
}