/* | |
* Copyright (C) 2008 Apple 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. | |
* | |
* 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 "ManifestParser.h" | |
#if ENABLE(OFFLINE_WEB_APPLICATIONS) | |
#include "CharacterNames.h" | |
#include "KURL.h" | |
#include "TextResourceDecoder.h" | |
using namespace std; | |
namespace WebCore { | |
enum Mode { Explicit, Fallback, OnlineWhitelist, Unknown }; | |
bool parseManifest(const KURL& manifestURL, const char* data, int length, Manifest& manifest) | |
{ | |
ASSERT(manifest.explicitURLs.isEmpty()); | |
ASSERT(manifest.onlineWhitelistedURLs.isEmpty()); | |
ASSERT(manifest.fallbackURLs.isEmpty()); | |
manifest.allowAllNetworkRequests = false; | |
Mode mode = Explicit; | |
RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create("text/cache-manifest", "UTF-8"); | |
String s = decoder->decode(data, length); | |
s += decoder->flush(); | |
// Look for the magic signature: "^\xFEFF?CACHE MANIFEST[ \t]?" (the BOM is removed by TextResourceDecoder). | |
// Example: "CACHE MANIFEST #comment" is a valid signature. | |
// Example: "CACHE MANIFEST;V2" is not. | |
if (!s.startsWith("CACHE MANIFEST")) | |
return false; | |
const UChar* end = s.characters() + s.length(); | |
const UChar* p = s.characters() + 14; // "CACHE MANIFEST" is 14 characters. | |
if (p < end && *p != ' ' && *p != '\t' && *p != '\n' && *p != '\r') | |
return false; | |
// Skip to the end of the line. | |
while (p < end && *p != '\r' && *p != '\n') | |
p++; | |
while (1) { | |
// Skip whitespace | |
while (p < end && (*p == '\n' || *p == '\r' || *p == ' ' || *p == '\t')) | |
p++; | |
if (p == end) | |
break; | |
const UChar* lineStart = p; | |
// Find the end of the line | |
while (p < end && *p != '\r' && *p != '\n') | |
p++; | |
// Check if we have a comment | |
if (*lineStart == '#') | |
continue; | |
// Get rid of trailing whitespace | |
const UChar* tmp = p - 1; | |
while (tmp > lineStart && (*tmp == ' ' || *tmp == '\t')) | |
tmp--; | |
String line(lineStart, tmp - lineStart + 1); | |
if (line == "CACHE:") | |
mode = Explicit; | |
else if (line == "FALLBACK:") | |
mode = Fallback; | |
else if (line == "NETWORK:") | |
mode = OnlineWhitelist; | |
else if (line.endsWith(":")) | |
mode = Unknown; | |
else if (mode == Unknown) | |
continue; | |
else if (mode == Explicit || mode == OnlineWhitelist) { | |
const UChar* p = line.characters(); | |
const UChar* lineEnd = p + line.length(); | |
// Look for whitespace separating the URL from subsequent ignored tokens. | |
while (p < lineEnd && *p != '\t' && *p != ' ') | |
p++; | |
if (mode == OnlineWhitelist && p - line.characters() == 1 && *line.characters() == '*') { | |
// Wildcard was found. | |
manifest.allowAllNetworkRequests = true; | |
continue; | |
} | |
KURL url(manifestURL, String(line.characters(), p - line.characters())); | |
if (!url.isValid()) | |
continue; | |
if (url.hasFragmentIdentifier()) | |
url.removeFragmentIdentifier(); | |
if (!equalIgnoringCase(url.protocol(), manifestURL.protocol())) | |
continue; | |
if (mode == Explicit) | |
manifest.explicitURLs.add(url.string()); | |
else | |
manifest.onlineWhitelistedURLs.append(url); | |
} else if (mode == Fallback) { | |
const UChar* p = line.characters(); | |
const UChar* lineEnd = p + line.length(); | |
// Look for whitespace separating the two URLs | |
while (p < lineEnd && *p != '\t' && *p != ' ') | |
p++; | |
if (p == lineEnd) { | |
// There was no whitespace separating the URLs. | |
continue; | |
} | |
KURL namespaceURL(manifestURL, String(line.characters(), p - line.characters())); | |
if (!namespaceURL.isValid()) | |
continue; | |
if (namespaceURL.hasFragmentIdentifier()) | |
namespaceURL.removeFragmentIdentifier(); | |
if (!protocolHostAndPortAreEqual(manifestURL, namespaceURL)) | |
continue; | |
// Skip whitespace separating fallback namespace from URL. | |
while (p < lineEnd && (*p == '\t' || *p == ' ')) | |
p++; | |
// Look for whitespace separating the URL from subsequent ignored tokens. | |
const UChar* fallbackStart = p; | |
while (p < lineEnd && *p != '\t' && *p != ' ') | |
p++; | |
KURL fallbackURL(manifestURL, String(fallbackStart, p - fallbackStart)); | |
if (!fallbackURL.isValid()) | |
continue; | |
if (fallbackURL.hasFragmentIdentifier()) | |
fallbackURL.removeFragmentIdentifier(); | |
if (!protocolHostAndPortAreEqual(manifestURL, fallbackURL)) | |
continue; | |
manifest.fallbackURLs.append(make_pair(namespaceURL, fallbackURL)); | |
} else | |
ASSERT_NOT_REACHED(); | |
} | |
return true; | |
} | |
} | |
#endif // ENABLE(OFFLINE_WEB_APPLICATIONS) |