FCL/sf/mw/qtwebkit: comparison WebCore/platform/KURLGoogle.cpp

equal deleted inserted replaced

--1:000000000000
+:4f2f89ce4247
+/*
+* Copyright (C) 2004, 2007, 2008, 2009 Apple Inc. All rights reserved.
+* Copyright (C) 2008, 2009 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:
+*
+*     * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+*     * 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.
+*     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+* OWNER 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"
+#if USE(GOOGLEURL)
+#include "KURL.h"
+#ifndef NDEBUG
+#include <stdio.h>
+#endif
+#include <algorithm>
+#include "StringHash.h"
+#include "NotImplemented.h"
+#include "TextEncoding.h"
+#include <wtf/HashMap.h>
+#include <wtf/Vector.h>
+#include <wtf/StdLibExtras.h>
+#include <wtf/text/CString.h>
+#include <googleurl/src/url_util.h>
+using WTF::isASCIILower;
+using WTF::toASCIILower;
+using std::binary_search;
+namespace WebCore {
+static const int maximumValidPortNumber = 0xFFFE;
+static const int invalidPortNumber = 0xFFFF;
+// Wraps WebCore's text encoding in a character set converter for the
+// canonicalizer.
+class KURLCharsetConverter : public url_canon::CharsetConverter {
+public:
+// The encoding parameter may be NULL, but in this case the object must not
+// be called.
+KURLCharsetConverter(const TextEncoding* encoding)
+: m_encoding(encoding)
+{
+}
+virtual void ConvertFromUTF16(const url_parse::UTF16Char* input, int inputLength,
+url_canon::CanonOutput* output)
+{
+CString encoded = m_encoding->encode(input, inputLength, URLEncodedEntitiesForUnencodables);
+output->Append(encoded.data(), static_cast<int>(encoded.length()));
+}
+private:
+const TextEncoding* m_encoding;
+};
+// Note that this function must be named differently than the one in KURL.cpp
+// since our unit tests evilly include both files, and their local definition
+// will be ambiguous.
+static inline void assertProtocolIsGood(const char* protocol)
+{
+#ifndef NDEBUG
+const char* p = protocol;
+while (*p) {
+ASSERT(*p > ' ' && *p < 0x7F && !(*p >= 'A' && *p <= 'Z'));
+++p;
+}
+#endif
+}
+// Returns the characters for the given string, or a pointer to a static empty
+// string if the input string is NULL. This will always ensure we have a non-
+// NULL character pointer since ReplaceComponents has special meaning for NULL.
+static inline const url_parse::UTF16Char* CharactersOrEmpty(const String& str)
+{
+static const url_parse::UTF16Char zero = 0;
+return str.characters() ?
+reinterpret_cast<const url_parse::UTF16Char*>(str.characters()) :
+&zero;
+}
+static inline bool isUnicodeEncoding(const TextEncoding* encoding)
+{
+return encoding->encodingForFormSubmission() == UTF8Encoding();
+}
+static bool lowerCaseEqualsASCII(const char* begin, const char* end, const char* str)
+{
+while (begin != end && *str) {
+ASSERT(toASCIILower(*str) == *str);
+if (toASCIILower(*begin++) != *str++)
+return false;
+}
+// Both strings are equal (ignoring case) if and only if all of the characters were equal,
+// and the end of both has been reached.
+return begin == end && !*str;
+}
+static inline bool isSchemeFirstChar(char c)
+{
+return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+}
+static inline bool isSchemeChar(char c)
+{
+return isSchemeFirstChar(c) || (c >= '0' && c <= '9') || c == '.' || c == '-' || c == '*';
+}
+// KURLGooglePrivate -----------------------------------------------------------
+KURLGooglePrivate::KURLGooglePrivate()
+: m_isValid(false)
+, m_protocolInHTTPFamily(false)
+, m_utf8IsASCII(true)
+, m_stringIsValid(false)
+{
+}
+KURLGooglePrivate::KURLGooglePrivate(const url_parse::Parsed& parsed, bool isValid)
+: m_isValid(isValid)
+, m_protocolInHTTPFamily(false)
+, m_parsed(parsed)
+, m_utf8IsASCII(true)
+, m_stringIsValid(false)
+{
+}
+// Setters for the data. Using the ASCII version when you know the
+// data is ASCII will be slightly more efficient. The UTF-8 version
+// will always be correct if the caller is unsure.
+void KURLGooglePrivate::setUtf8(const CString& str)
+{
+const char* data = str.data();
+unsigned dataLength = str.length();
+// The m_utf8IsASCII must always be correct since the DeprecatedString
+// getter must create it with the proper constructor. This test can be
+// removed when DeprecatedString is gone, but it still might be a
+// performance win.
+m_utf8IsASCII = true;
+for (unsigned i = 0; i < dataLength; i++) {
+if (static_cast<unsigned char>(data[i]) >= 0x80) {
+m_utf8IsASCII = false;
+break;
+}
+}
+m_utf8 = str;
+m_stringIsValid = false;
+initProtocolInHTTPFamily();
+}
+void KURLGooglePrivate::setAscii(const CString& str)
+{
+m_utf8 = str;
+m_utf8IsASCII = true;
+m_stringIsValid = false;
+initProtocolInHTTPFamily();
+}
+void KURLGooglePrivate::init(const KURL& base,
+const String& relative,
+const TextEncoding* queryEncoding)
+{
+init(base, relative.characters(), relative.length(), queryEncoding);
+}
+// Note: code mostly duplicated below.
+void KURLGooglePrivate::init(const KURL& base, const char* rel, int relLength,
+const TextEncoding* queryEncoding)
+{
+// As a performance optimization, we do not use the charset converter if
+// encoding is UTF-8 or other Unicode encodings. Note that this is
+// per HTML5 2.5.3 (resolving URL). The URL canonicalizer will be
+// more efficient with no charset converter object because it
+// can do UTF-8 internally with no extra copies.
+// We feel free to make the charset converter object every time since it's
+// just a wrapper around a reference.
+KURLCharsetConverter charsetConverterObject(queryEncoding);
+KURLCharsetConverter* charsetConverter =
+(!queryEncoding || isUnicodeEncoding(queryEncoding)) ? 0 :
+&charsetConverterObject;
+url_canon::RawCanonOutputT<char> output;
+const CString& baseStr = base.m_url.utf8String();
+m_isValid = url_util::ResolveRelative(baseStr.data(), baseStr.length(),
+base.m_url.m_parsed, rel, relLength,
+charsetConverter,
+&output, &m_parsed);
+// See FIXME in KURLGooglePrivate in the header. If canonicalization has not
+// changed the string, we can avoid an extra allocation by using assignment.
+//
+// When KURL encounters an error such that the URL is invalid and empty
+// (for example, resolving a relative URL on a non-hierarchical base), it
+// will produce an isNull URL, and calling setUtf8 will produce an empty
+// non-null URL. This is unlikely to affect anything, but we preserve this
+// just in case.
+if (m_isValid || output.length()) {
+// Without ref, the whole url is guaranteed to be ASCII-only.
+if (m_parsed.ref.is_nonempty())
+setUtf8(CString(output.data(), output.length()));
+else
+setAscii(CString(output.data(), output.length()));
+} else {
+// WebCore expects resolved URLs to be empty rather than NULL.
+setUtf8(CString("", 0));
+}
+}
+// Note: code mostly duplicated above. See FIXMEs and comments there.
+void KURLGooglePrivate::init(const KURL& base, const UChar* rel, int relLength,
+const TextEncoding* queryEncoding)
+{
+KURLCharsetConverter charsetConverterObject(queryEncoding);
+KURLCharsetConverter* charsetConverter =
+(!queryEncoding || isUnicodeEncoding(queryEncoding)) ? 0 :
+&charsetConverterObject;
+url_canon::RawCanonOutputT<char> output;
+const CString& baseStr = base.m_url.utf8String();
+m_isValid = url_util::ResolveRelative(baseStr.data(), baseStr.length(),
+base.m_url.m_parsed, rel, relLength,
+charsetConverter,
+&output, &m_parsed);
+if (m_isValid || output.length()) {
+if (m_parsed.ref.is_nonempty())
+setUtf8(CString(output.data(), output.length()));
+else
+setAscii(CString(output.data(), output.length()));
+} else
+setUtf8(CString("", 0));
+}
+void KURLGooglePrivate::initProtocolInHTTPFamily()
+{
+if (!m_isValid) {
+m_protocolInHTTPFamily = false;
+return;
+}
+const char* scheme = m_utf8.data() + m_parsed.scheme.begin;
+if (m_parsed.scheme.len == 4)
+m_protocolInHTTPFamily = lowerCaseEqualsASCII(scheme, scheme + 4, "http");
+else if (m_parsed.scheme.len == 5)
+m_protocolInHTTPFamily = lowerCaseEqualsASCII(scheme, scheme + 5, "https");
+else
+m_protocolInHTTPFamily = false;
+}
+void KURLGooglePrivate::copyTo(KURLGooglePrivate* dest) const
+{
+dest->m_isValid = m_isValid;
+dest->m_protocolInHTTPFamily = m_protocolInHTTPFamily;
+dest->m_parsed = m_parsed;
+// Don't copy the 16-bit string since that will be regenerated as needed.
+dest->m_utf8 = CString(m_utf8.data(), m_utf8.length());
+dest->m_utf8IsASCII = m_utf8IsASCII;
+dest->m_stringIsValid = false;
+}
+String KURLGooglePrivate::componentString(const url_parse::Component& comp) const
+{
+if (!m_isValid || comp.len <= 0) {
+// KURL returns a NULL string if the URL is itself a NULL string, and an
+// empty string for other nonexistant entities.
+if (utf8String().isNull())
+return String();
+return String("", 0);
+}
+// begin and len are in terms of bytes which do not match
+// if string() is UTF-16 and input contains non-ASCII characters.
+// However, the only part in urlString that can contain non-ASCII
+// characters is 'ref' at the end of the string. In that case,
+// begin will always match the actual value and len (in terms of
+// byte) will be longer than what's needed by 'mid'. However, mid
+// truncates len to avoid go past the end of a string so that we can
+// get away withtout doing anything here.
+return string().substring(comp.begin, comp.len);
+}
+void KURLGooglePrivate::replaceComponents(const Replacements& replacements)
+{
+url_canon::RawCanonOutputT<char> output;
+url_parse::Parsed newParsed;
+m_isValid = url_util::ReplaceComponents(utf8String().data(),
+utf8String().length(), m_parsed, replacements, 0, &output, &newParsed);
+m_parsed = newParsed;
+if (m_parsed.ref.is_nonempty())
+setUtf8(CString(output.data(), output.length()));
+else
+setAscii(CString(output.data(), output.length()));
+}
+const String& KURLGooglePrivate::string() const
+{
+if (!m_stringIsValid) {
+// Must special case the NULL case, since constructing the
+// string like we do below will generate an empty rather than
+// a NULL string.
+if (m_utf8.isNull())
+m_string = String();
+else if (m_utf8IsASCII)
+m_string = String(m_utf8.data(), m_utf8.length());
+else
+m_string = String::fromUTF8(m_utf8.data(), m_utf8.length());
+m_stringIsValid = true;
+}
+return m_string;
+}
+// KURL ------------------------------------------------------------------------
+// Creates with NULL-terminated string input representing an absolute URL.
+// WebCore generally calls this only with hardcoded strings, so the input is
+// ASCII. We treat is as UTF-8 just in case.
+KURL::KURL(ParsedURLStringTag, const char *url)
+{
+// FIXME The Mac code checks for beginning with a slash and converting to a
+// file: URL. We will want to add this as well once we can compile on a
+// system like that.
+m_url.init(KURL(), url, strlen(url), 0);
+// The one-argument constructors should never generate a NULL string.
+// This is a funny quirk of KURL.cpp (probably a bug) which we preserve.
+if (m_url.utf8String().isNull())
+m_url.setAscii(CString("", 0));
+}
+// Initializes with a string representing an absolute URL. No encoding
+// information is specified. This generally happens when a KURL is converted
+// to a string and then converted back. In this case, the URL is already
+// canonical and in proper escaped form so needs no encoding. We treat it was
+// UTF-8 just in case.
+KURL::KURL(ParsedURLStringTag, const String& url)
+{
+if (!url.isNull())
+m_url.init(KURL(), url, 0);
+else {
+// WebCore expects us to preserve the nullness of strings when this
+// constructor is used. In all other cases, it expects a non-null
+// empty string, which is what init() will create.
+m_url.m_isValid = false;
+m_url.m_protocolInHTTPFamily = false;
+}
+}
+// Constructs a new URL given a base URL and a possibly relative input URL.
+// This assumes UTF-8 encoding.
+KURL::KURL(const KURL& base, const String& relative)
+{
+m_url.init(base, relative, 0);
+}
+// Constructs a new URL given a base URL and a possibly relative input URL.
+// Any query portion of the relative URL will be encoded in the given encoding.
+KURL::KURL(const KURL& base,
+const String& relative,
+const TextEncoding& encoding)
+{
+m_url.init(base, relative, &encoding.encodingForFormSubmission());
+}
+KURL::KURL(const CString& canonicalSpec,
+const url_parse::Parsed& parsed, bool isValid)
+: m_url(parsed, isValid)
+{
+// We know the reference fragment is the only part that can be UTF-8, so
+// we know it's ASCII when there is no ref.
+if (parsed.ref.is_nonempty())
+m_url.setUtf8(canonicalSpec);
+else
+m_url.setAscii(canonicalSpec);
+}
+#if PLATFORM(CF)
+KURL::KURL(CFURLRef)
+{
+notImplemented();
+invalidate();
+}
+CFURLRef KURL::createCFURL() const
+{
+notImplemented();
+return 0;
+}
+#endif
+KURL KURL::copy() const
+{
+KURL result = *this;
+m_url.copyTo(&result.m_url);
+return result;
+}
+bool KURL::isNull() const
+{
+return m_url.utf8String().isNull();
+}
+bool KURL::isEmpty() const
+{
+return !m_url.utf8String().length();
+}
+bool KURL::isValid() const
+{
+return m_url.m_isValid;
+}
+bool KURL::hasPort() const
+{
+return hostEnd() < pathStart();
+}
+bool KURL::protocolInHTTPFamily() const
+{
+return m_url.m_protocolInHTTPFamily;
+}
+bool KURL::hasPath() const
+{
+// Note that http://www.google.com/" has a path, the path is "/". This can
+// return false only for invalid or nonstandard URLs.
+return m_url.m_parsed.path.len >= 0;
+}
+// We handle "parameters" separated by a semicolon, while KURL.cpp does not,
+// which can lead to different results in some cases.
+String KURL::lastPathComponent() const
+{
+// When the output ends in a slash, WebCore has different expectations than
+// the GoogleURL library. For "/foo/bar/" the library will return the empty
+// string, but WebCore wants "bar".
+url_parse::Component path = m_url.m_parsed.path;
+if (path.len > 0 && m_url.utf8String().data()[path.end() - 1] == '/')
+path.len--;
+url_parse::Component file;
+url_parse::ExtractFileName(m_url.utf8String().data(), path, &file);
+// Bug: https://bugs.webkit.org/show_bug.cgi?id=21015 this function returns
+// a null string when the path is empty, which we duplicate here.
+if (!file.is_nonempty())
+return String();
+return m_url.componentString(file);
+}
+String KURL::protocol() const
+{
+return m_url.componentString(m_url.m_parsed.scheme);
+}
+String KURL::host() const
+{
+// Note: KURL.cpp unescapes here.
+return m_url.componentString(m_url.m_parsed.host);
+}
+// Returns 0 when there is no port.
+//
+// We treat URL's with out-of-range port numbers as invalid URLs, and they will
+// be rejected by the canonicalizer. KURL.cpp will allow them in parsing, but
+// return invalidPortNumber from this port() function, so we mirror that behavior here.
+unsigned short KURL::port() const
+{
+if (!m_url.m_isValid || m_url.m_parsed.port.len <= 0)
+return 0;
+int port = url_parse::ParsePort(m_url.utf8String().data(), m_url.m_parsed.port);
+ASSERT(port != url_parse::PORT_UNSPECIFIED); // Checked port.len <= 0 before.
+if (port == url_parse::PORT_INVALID || port > maximumValidPortNumber) // Mimic KURL::port()
+port = invalidPortNumber;
+return static_cast<unsigned short>(port);
+}
+// Returns the empty string if there is no password.
+String KURL::pass() const
+{
+// Bug: https://bugs.webkit.org/show_bug.cgi?id=21015 this function returns
+// a null string when the password is empty, which we duplicate here.
+if (!m_url.m_parsed.password.is_nonempty())
+return String();
+// Note: KURL.cpp unescapes here.
+return m_url.componentString(m_url.m_parsed.password);
+}
+// Returns the empty string if there is no username.
+String KURL::user() const
+{
+// Note: KURL.cpp unescapes here.
+return m_url.componentString(m_url.m_parsed.username);
+}
+String KURL::fragmentIdentifier() const
+{
+// Empty but present refs ("foo.com/bar#") should result in the empty
+// string, which m_url.componentString will produce. Nonexistant refs should be
+// the NULL string.
+if (!m_url.m_parsed.ref.is_valid())
+return String();
+// Note: KURL.cpp unescapes here.
+return m_url.componentString(m_url.m_parsed.ref);
+}
+bool KURL::hasFragmentIdentifier() const
+{
+// Note: KURL.cpp unescapes here.
+// FIXME determine if KURL.cpp agrees about an empty ref
+return m_url.m_parsed.ref.len >= 0;
+}
+String KURL::baseAsString() const
+{
+// FIXME: There is probably a more efficient way to do this?
+return string().left(pathAfterLastSlash());
+}
+String KURL::query() const
+{
+if (m_url.m_parsed.query.len >= 0)
+return m_url.componentString(m_url.m_parsed.query);
+// Bug: https://bugs.webkit.org/show_bug.cgi?id=21015 this function returns
+// an empty string when the query is empty rather than a null (not sure
+// which is right).
+// Returns a null if the query is not specified, instead of empty.
+if (m_url.m_parsed.query.is_valid())
+return String("", 0);
+return String();
+}
+String KURL::path() const
+{
+// Note: KURL.cpp unescapes here.
+return m_url.componentString(m_url.m_parsed.path);
+}
+bool KURL::setProtocol(const String& protocol)
+{
+// Firefox and IE remove everything after the first ':'.
+int separatorPosition = protocol.find(':');
+String newProtocol = protocol.substring(0, separatorPosition);
+// If KURL is given an invalid scheme, it returns failure without modifying
+// the URL at all. This is in contrast to most other setters which modify
+// the URL and set "m_isValid."
+url_canon::RawCanonOutputT<char> canonProtocol;
+url_parse::Component protocolComponent;
+if (!url_canon::CanonicalizeScheme(newProtocol.characters(),
+url_parse::Component(0, newProtocol.length()),
+&canonProtocol, &protocolComponent)
+|| !protocolComponent.is_nonempty())
+return false;
+KURLGooglePrivate::Replacements replacements;
+replacements.SetScheme(CharactersOrEmpty(newProtocol),
+url_parse::Component(0, newProtocol.length()));
+m_url.replaceComponents(replacements);
+// isValid could be false but we still return true here. This is because
+// WebCore or JS scripts can build up a URL by setting individual
+// components, and a JS exception is based on the return value of this
+// function. We want to throw the exception and stop the script only when
+// its trying to set a bad protocol, and not when it maybe just hasn't
+// finished building up its final scheme.
+return true;
+}
+void KURL::setHost(const String& host)
+{
+KURLGooglePrivate::Replacements replacements;
+replacements.SetHost(CharactersOrEmpty(host),
+url_parse::Component(0, host.length()));
+m_url.replaceComponents(replacements);
+}
+void KURL::setHostAndPort(const String& s)
+{
+String host = s;
+String port;
+int hostEnd = s.find(":");
+if (hostEnd != -1) {
+host = s.left(hostEnd);
+port = s.substring(hostEnd + 1);
+}
+KURLGooglePrivate::Replacements replacements;
+// Host can't be removed, so we always set.
+replacements.SetHost(CharactersOrEmpty(host),
+url_parse::Component(0, host.length()));
+if (port.isEmpty())  // Port may be removed, so we support clearing.
+replacements.ClearPort();
+else
+replacements.SetPort(CharactersOrEmpty(port), url_parse::Component(0, port.length()));
+m_url.replaceComponents(replacements);
+}
+void KURL::removePort()
+{
+if (hasPort()) {
+String urlWithoutPort = m_url.string().left(hostEnd()) + m_url.string().substring(pathStart());
+m_url.setUtf8(urlWithoutPort.utf8());
+}
+}
+void KURL::setPort(unsigned short i)
+{
+KURLGooglePrivate::Replacements replacements;
+String portStr;
+if (i) {
+portStr = String::number(i);
+replacements.SetPort(
+reinterpret_cast<const url_parse::UTF16Char*>(portStr.characters()),
+url_parse::Component(0, portStr.length()));
+} else {
+// Clear any existing port when it is set to 0.
+replacements.ClearPort();
+}
+m_url.replaceComponents(replacements);
+}
+void KURL::setUser(const String& user)
+{
+// This function is commonly called to clear the username, which we
+// normally don't have, so we optimize this case.
+if (user.isEmpty() && !m_url.m_parsed.username.is_valid())
+return;
+// The canonicalizer will clear any usernames that are empty, so we
+// don't have to explicitly call ClearUsername() here.
+KURLGooglePrivate::Replacements replacements;
+replacements.SetUsername(CharactersOrEmpty(user),
+url_parse::Component(0, user.length()));
+m_url.replaceComponents(replacements);
+}
+void KURL::setPass(const String& pass)
+{
+// This function is commonly called to clear the password, which we
+// normally don't have, so we optimize this case.
+if (pass.isEmpty() && !m_url.m_parsed.password.is_valid())
+return;
+// The canonicalizer will clear any passwords that are empty, so we
+// don't have to explicitly call ClearUsername() here.
+KURLGooglePrivate::Replacements replacements;
+replacements.SetPassword(CharactersOrEmpty(pass),
+url_parse::Component(0, pass.length()));
+m_url.replaceComponents(replacements);
+}
+void KURL::setFragmentIdentifier(const String& s)
+{
+// This function is commonly called to clear the ref, which we
+// normally don't have, so we optimize this case.
+if (s.isNull() && !m_url.m_parsed.ref.is_valid())
+return;
+KURLGooglePrivate::Replacements replacements;
+if (s.isNull())
+replacements.ClearRef();
+else
+replacements.SetRef(CharactersOrEmpty(s), url_parse::Component(0, s.length()));
+m_url.replaceComponents(replacements);
+}
+void KURL::removeFragmentIdentifier()
+{
+KURLGooglePrivate::Replacements replacements;
+replacements.ClearRef();
+m_url.replaceComponents(replacements);
+}
+void KURL::setQuery(const String& query)
+{
+KURLGooglePrivate::Replacements replacements;
+if (query.isNull()) {
+// KURL.cpp sets to NULL to clear any query.
+replacements.ClearQuery();
+} else if (query.length() > 0 && query[0] == '?') {
+// WebCore expects the query string to begin with a question mark, but
+// GoogleURL doesn't. So we trim off the question mark when setting.
+replacements.SetQuery(CharactersOrEmpty(query),
+url_parse::Component(1, query.length() - 1));
+} else {
+// When set with the empty string or something that doesn't begin with
+// a question mark, KURL.cpp will add a question mark for you. The only
+// way this isn't compatible is if you call this function with an empty
+// string. KURL.cpp will leave a '?' with nothing following it in the
+// URL, whereas we'll clear it.
+// FIXME We should eliminate this difference.
+replacements.SetQuery(CharactersOrEmpty(query),
+url_parse::Component(0, query.length()));
+}
+m_url.replaceComponents(replacements);
+}
+void KURL::setPath(const String& path)
+{
+// Empty paths will be canonicalized to "/", so we don't have to worry
+// about calling ClearPath().
+KURLGooglePrivate::Replacements replacements;
+replacements.SetPath(CharactersOrEmpty(path),
+url_parse::Component(0, path.length()));
+m_url.replaceComponents(replacements);
+}
+// On Mac, this just seems to return the same URL, but with "/foo/bar" for
+// file: URLs instead of file:///foo/bar. We don't bother with any of this,
+// at least for now.
+String KURL::prettyURL() const
+{
+if (!m_url.m_isValid)
+return String();
+return m_url.string();
+}
+bool protocolIsJavaScript(const String& url)
+{
+return protocolIs(url, "javascript");
+}
+// We copied the KURL version here on Dec 4, 2009 while doing a WebKit
+// merge.
+//
+// FIXME Somehow share this with KURL? Like we'd theoretically merge with
+// decodeURLEscapeSequences below?
+bool isDefaultPortForProtocol(unsigned short port, const String& protocol)
+{
+if (protocol.isEmpty())
+return false;
+typedef HashMap<String, unsigned, CaseFoldingHash> DefaultPortsMap;
+DEFINE_STATIC_LOCAL(DefaultPortsMap, defaultPorts, ());
+if (defaultPorts.isEmpty()) {
+defaultPorts.set("http", 80);
+defaultPorts.set("https", 443);
+defaultPorts.set("ftp", 21);
+defaultPorts.set("ftps", 990);
+}
+return defaultPorts.get(protocol) == port;
+}
+// We copied the KURL version here on Dec 4, 2009 while doing a WebKit
+// merge.
+//
+// FIXME Somehow share this with KURL? Like we'd theoretically merge with
+// decodeURLEscapeSequences below?
+bool portAllowed(const KURL& url)
+{
+unsigned short port = url.port();
+// Since most URLs don't have a port, return early for the "no port" case.
+if (!port)
+return true;
+// This blocked port list matches the port blocking that Mozilla implements.
+// See http://www.mozilla.org/projects/netlib/PortBanning.html for more information.
+static const unsigned short blockedPortList[] = {
+1,    // tcpmux
+7,    // echo
+9,    // discard
+11,   // systat
+13,   // daytime
+15,   // netstat
+17,   // qotd
+19,   // chargen
+20,   // FTP-data
+21,   // FTP-control
+22,   // SSH
+23,   // telnet
+25,   // SMTP
+37,   // time
+42,   // name
+43,   // nicname
+53,   // domain
+77,   // priv-rjs
+79,   // finger
+87,   // ttylink
+95,   // supdup
+101,  // hostriame
+102,  // iso-tsap
+103,  // gppitnp
+104,  // acr-nema
+109,  // POP2
+110,  // POP3
+111,  // sunrpc
+113,  // auth
+115,  // SFTP
+117,  // uucp-path
+119,  // nntp
+123,  // NTP
+135,  // loc-srv / epmap
+139,  // netbios
+143,  // IMAP2
+179,  // BGP
+389,  // LDAP
+465,  // SMTP+SSL
+512,  // print / exec
+513,  // login
+514,  // shell
+515,  // printer
+526,  // tempo
+530,  // courier
+531,  // Chat
+532,  // netnews
+540,  // UUCP
+556,  // remotefs
+563,  // NNTP+SSL
+587,  // ESMTP
+601,  // syslog-conn
+636,  // LDAP+SSL
+993,  // IMAP+SSL
+995,  // POP3+SSL
+2049, // NFS
+3659, // apple-sasl / PasswordServer [Apple addition]
+4045, // lockd
+6000, // X11
+6665, // Alternate IRC [Apple addition]
+6666, // Alternate IRC [Apple addition]
+6667, // Standard IRC [Apple addition]
+6668, // Alternate IRC [Apple addition]
+6669, // Alternate IRC [Apple addition]
+invalidPortNumber, // Used to block all invalid port numbers
+};
+const unsigned short* const blockedPortListEnd = blockedPortList + sizeof(blockedPortList) / sizeof(blockedPortList[0]);
+#ifndef NDEBUG
+// The port list must be sorted for binary_search to work.
+static bool checkedPortList = false;
+if (!checkedPortList) {
+for (const unsigned short* p = blockedPortList; p != blockedPortListEnd - 1; ++p)
+ASSERT(*p < *(p + 1));
+checkedPortList = true;
+}
+#endif
+// If the port is not in the blocked port list, allow it.
+if (!binary_search(blockedPortList, blockedPortListEnd, port))
+return true;
+// Allow ports 21 and 22 for FTP URLs, as Mozilla does.
+if ((port == 21 || port == 22) && url.protocolIs("ftp"))
+return true;
+// Allow any port number in a file URL, since the port number is ignored.
+if (url.protocolIs("file"))
+return true;
+return false;
+}
+// We copied the KURL version here on Sept 12, 2008 while doing a WebKit
+// merge.
+//
+// FIXME Somehow share this with KURL? Like we'd theoretically merge with
+// decodeURLEscapeSequences below?
+String mimeTypeFromDataURL(const String& url)
+{
+ASSERT(protocolIs(url, "data"));
+int index = url.find(';');
+if (index == -1)
+index = url.find(',');
+if (index != -1) {
+int len = index - 5;
+if (len > 0)
+return url.substring(5, len);
+return "text/plain"; // Data URLs with no MIME type are considered text/plain.
+}
+return "";
+}
+String decodeURLEscapeSequences(const String& str)
+{
+return decodeURLEscapeSequences(str, UTF8Encoding());
+}
+// In KURL.cpp's implementation, this is called by every component getter.
+// It will unescape every character, including NULL. This is scary, and may
+// cause security holes. We never call this function for components, and
+// just return the ASCII versions instead.
+//
+// This function is also used to decode javascript: URLs and as a general
+// purpose unescaping function.
+//
+// FIXME These should be merged to the KURL.cpp implementation.
+String decodeURLEscapeSequences(const String& str, const TextEncoding& encoding)
+{
+// FIXME We can probably use KURL.cpp's version of this function
+// without modification. However, I'm concerned about
+// https://bugs.webkit.org/show_bug.cgi?id=20559 so am keeping this old
+// custom code for now. Using their version will also fix the bug that
+// we ignore the encoding.
+//
+// FIXME b/1350291: This does not get called very often. We just convert
+// first to 8-bit UTF-8, then unescape, then back to 16-bit. This kind of
+// sucks, and we don't use the encoding properly, which will make some
+// obscure anchor navigations fail.
+CString cstr = str.utf8();
+const char* input = cstr.data();
+int inputLength = cstr.length();
+url_canon::RawCanonOutputT<url_parse::UTF16Char> unescaped;
+url_util::DecodeURLEscapeSequences(input, inputLength, &unescaped);
+return String(reinterpret_cast<UChar*>(unescaped.data()),
+unescaped.length());
+}
+bool KURL::protocolIs(const char* protocol) const
+{
+assertProtocolIsGood(protocol);
+// JavaScript URLs are "valid" and should be executed even if KURL decides they are invalid.
+// The free function protocolIsJavaScript() should be used instead.
+// FIXME: Chromium code needs to be fixed for this assert to be enabled. ASSERT(strcmp(protocol, "javascript"));
+if (m_url.m_parsed.scheme.len <= 0)
+return !protocol;
+return lowerCaseEqualsASCII(
+m_url.utf8String().data() + m_url.m_parsed.scheme.begin,
+m_url.utf8String().data() + m_url.m_parsed.scheme.end(),
+protocol);
+}
+bool KURL::isLocalFile() const
+{
+return protocolIs("file");
+}
+// This is called to escape a URL string. It is only used externally when
+// constructing mailto: links to set the query section. Since our query setter
+// will automatically do the correct escaping, this function does not have to
+// do any work.
+//
+// There is a possibility that a future called may use this function in other
+// ways, and may expect to get a valid URL string. The dangerous thing we want
+// to protect against here is accidentally getting NULLs in a string that is
+// not supposed to have NULLs. Therefore, we escape NULLs here to prevent this.
+String encodeWithURLEscapeSequences(const String& notEncodedString)
+{
+CString utf8 = UTF8Encoding().encode(
+reinterpret_cast<const UChar*>(notEncodedString.characters()),
+notEncodedString.length(),
+URLEncodedEntitiesForUnencodables);
+const char* input = utf8.data();
+int inputLength = utf8.length();
+Vector<char, 2048> buffer;
+for (int i = 0; i < inputLength; i++) {
+if (!input[i])
+buffer.append("%00", 3);
+else
+buffer.append(input[i]);
+}
+return String(buffer.data(), buffer.size());
+}
+bool KURL::isHierarchical() const
+{
+if (!m_url.m_parsed.scheme.is_nonempty())
+return false;
+return url_util::IsStandard(
+&m_url.utf8String().data()[m_url.m_parsed.scheme.begin],
+m_url.m_parsed.scheme);
+}
+#ifndef NDEBUG
+void KURL::print() const
+{
+printf("%s\n", m_url.utf8String().data());
+}
+#endif
+void KURL::invalidate()
+{
+// This is only called from the constructor so resetting the (automatically
+// initialized) string and parsed structure would be a waste of time.
+m_url.m_isValid = false;
+m_url.m_protocolInHTTPFamily = false;
+}
+// Equal up to reference fragments, if any.
+bool equalIgnoringFragmentIdentifier(const KURL& a, const KURL& b)
+{
+// Compute the length of each URL without its ref. Note that the reference
+// begin (if it exists) points to the character *after* the '#', so we need
+// to subtract one.
+int aLength = a.m_url.utf8String().length();
+if (a.m_url.m_parsed.ref.len >= 0)
+aLength = a.m_url.m_parsed.ref.begin - 1;
+int bLength = b.m_url.utf8String().length();
+if (b.m_url.m_parsed.ref.len >= 0)
+bLength = b.m_url.m_parsed.ref.begin - 1;
+return aLength == bLength
+&& !strncmp(a.m_url.utf8String().data(), b.m_url.utf8String().data(), aLength);
+}
+unsigned KURL::hostStart() const
+{
+return m_url.m_parsed.CountCharactersBefore(url_parse::Parsed::HOST, false);
+}
+unsigned KURL::hostEnd() const
+{
+return m_url.m_parsed.CountCharactersBefore(url_parse::Parsed::PORT, true);
+}
+unsigned KURL::pathStart() const
+{
+return m_url.m_parsed.CountCharactersBefore(url_parse::Parsed::PATH, false);
+}
+unsigned KURL::pathEnd() const
+{
+return m_url.m_parsed.CountCharactersBefore(url_parse::Parsed::QUERY, true);
+}
+unsigned KURL::pathAfterLastSlash() const
+{
+// When there's no path, ask for what would be the beginning of it.
+if (!m_url.m_parsed.path.is_valid())
+return m_url.m_parsed.CountCharactersBefore(url_parse::Parsed::PATH, false);
+url_parse::Component filename;
+url_parse::ExtractFileName(m_url.utf8String().data(), m_url.m_parsed.path,
+&filename);
+return filename.begin;
+}
+const KURL& blankURL()
+{
+static KURL staticBlankURL(ParsedURLString, "about:blank");
+return staticBlankURL;
+}
+bool protocolIs(const String& url, const char* protocol)
+{
+// Do the comparison without making a new string object.
+assertProtocolIsGood(protocol);
+// Check the scheme like GURL does.
+return url_util::FindAndCompareScheme(url.characters(), url.length(),
+protocol, NULL);
+}
+inline bool KURL::protocolIs(const String& string, const char* protocol)
+{
+return WebCore::protocolIs(string, protocol);
+}
+bool protocolHostAndPortAreEqual(const KURL& a, const KURL& b)
+{
+if (a.parsed().scheme.end() != b.parsed().scheme.end())
+return false;
+int hostStartA = a.hostStart();
+int hostLengthA = a.hostEnd() - hostStartA;
+int hostStartB = b.hostStart();
+int hostLengthB = b.hostEnd() - b.hostStart();
+if (hostLengthA != hostLengthB)
+return false;
+// Check the scheme
+for (int i = 0; i < a.parsed().scheme.end(); ++i)
+if (a.string()[i] != b.string()[i])
+return false;
+// And the host
+for (int i = 0; i < hostLengthA; ++i)
+if (a.string()[hostStartA + i] != b.string()[hostStartB + i])
+return false;
+if (a.port() != b.port())
+return false;
+return true;
+}
+} // namespace WebCore
+#endif // USE(GOOGLEURL)