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/*
* Copyright 2011, The Android Open Source Project
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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"
#include "ChromiumIncludes.h"
#include "WebCache.h"
#include "WebCoreJni.h"
#include <JNIHelp.h>
#include <platform/FileSystem.h>
#include <platform/text/Base64.h>
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
using namespace WebCore;
using namespace base;
using namespace disk_cache;
using namespace net;
using namespace std;
namespace android {
// JNI for android.webkit.CacheManager
static const char* javaCacheManagerClass = "android/webkit/CacheManager";
static void setStringField(JNIEnv* env, const jobject& object, const jfieldID& field, const String& str)
{
jstring jstr = wtfStringToJstring(env, str);
env->SetObjectField(object, field, jstr);
env->DeleteLocalRef(jstr);
}
static void setFieldFromHeaderIfPresent(CacheResult* result, const char* header, JNIEnv* env, const jobject& object, const jfieldID& field, bool allowEmptyString)
{
String value;
if (result->firstResponseHeader(header, &value, allowEmptyString))
setStringField(env, object, field, value);
}
static String getCacheFileBaseDir(JNIEnv* env)
{
static String baseDir;
if (baseDir.isEmpty()) {
jclass cacheManagerClass = env->FindClass("android/webkit/CacheManager");
jmethodID getCacheFileBaseDirMethod = env->GetStaticMethodID(cacheManagerClass, "getCacheFileBaseDir", "()Ljava/io/File;");
jclass fileClass = env->FindClass("java/io/File");
jmethodID getPathMethod = env->GetMethodID(fileClass, "getPath", "()Ljava/lang/String;");
jobject fileObject = env->CallStaticObjectMethod(cacheManagerClass, getCacheFileBaseDirMethod);
baseDir = jstringToWtfString(env, static_cast<jstring>(env->CallObjectMethod(fileObject, getPathMethod)));
}
return baseDir;
}
static jobject getCacheResult(JNIEnv* env, jobject, jstring url)
{
// This is called on the UI thread.
scoped_refptr<CacheResult> result = WebCache::get(false /*privateBrowsing*/)->getCacheResult(jstringToWtfString(env, url));
if (!result)
return 0;
// We create and populate a file with the cache entry. This allows us to
// replicate the behaviour of the Android HTTP stack in the Java
// CacheManager, which opens the cache file and provides an input stream to
// the file as part of the Java CacheResult object!
String urlWtfString = jstringToWtfString(env, url);
Vector<char> encodedUrl;
base64Encode(urlWtfString.utf8().data(), urlWtfString.length(), encodedUrl, false /*insertLFs*/);
encodedUrl.append('\0');
String filePath = pathByAppendingComponent(getCacheFileBaseDir(env), encodedUrl.data());
if (!result->writeToFile(filePath))
return 0;
jclass cacheResultClass = env->FindClass("android/webkit/CacheManager$CacheResult");
jmethodID constructor = env->GetMethodID(cacheResultClass, "<init>", "()V");
// We only bother with the fields that are made accessible through the public API.
jfieldID contentdispositionField = env->GetFieldID(cacheResultClass, "contentdisposition", "Ljava/lang/String;");
jfieldID contentLengthField = env->GetFieldID(cacheResultClass, "contentLength", "J");
jfieldID etagField = env->GetFieldID(cacheResultClass, "etag", "Ljava/lang/String;");
jfieldID encodingField = env->GetFieldID(cacheResultClass, "encoding", "Ljava/lang/String;");
jfieldID expiresField = env->GetFieldID(cacheResultClass, "expires", "J");
jfieldID expiresStringField = env->GetFieldID(cacheResultClass, "expiresString", "Ljava/lang/String;");
jfieldID httpStatusCodeField = env->GetFieldID(cacheResultClass, "httpStatusCode", "I");
jfieldID lastModifiedField = env->GetFieldID(cacheResultClass, "lastModified", "Ljava/lang/String;");
jfieldID localPathField = env->GetFieldID(cacheResultClass, "localPath", "Ljava/lang/String;");
jfieldID locationField = env->GetFieldID(cacheResultClass, "location", "Ljava/lang/String;");
jfieldID mimeTypeField = env->GetFieldID(cacheResultClass, "mimeType", "Ljava/lang/String;");
jobject javaResult = env->NewObject(cacheResultClass, constructor);
setFieldFromHeaderIfPresent(result.get(), "content-disposition", env, javaResult, contentdispositionField, true);
env->SetLongField(javaResult, contentLengthField, result->contentSize());
setFieldFromHeaderIfPresent(result.get(), "etag", env, javaResult, etagField, false);
setStringField(env, javaResult, encodingField, "TODO"); // TODO: Where does the Android stack set this?
env->SetLongField(javaResult, expiresField, result->expires());
env->SetIntField(javaResult, httpStatusCodeField, result->responseCode());
setFieldFromHeaderIfPresent(result.get(), "last-modified", env, javaResult, lastModifiedField, false);
setStringField(env, javaResult, localPathField, encodedUrl.data());
setFieldFromHeaderIfPresent(result.get(), "location", env, javaResult, locationField, false);
setStringField(env, javaResult, mimeTypeField, result->mimeType());
return javaResult;
}
static JNINativeMethod gCacheManagerMethods[] = {
{ "nativeGetCacheResult", "(Ljava/lang/String;)Landroid/webkit/CacheManager$CacheResult;", (void*) getCacheResult },
};
int registerCacheManager(JNIEnv* env)
{
#ifndef NDEBUG
jclass cacheManager = env->FindClass(javaCacheManagerClass);
ALOG_ASSERT(cacheManager, "Unable to find class");
env->DeleteLocalRef(cacheManager);
#endif
return jniRegisterNativeMethods(env, javaCacheManagerClass, gCacheManagerMethods, NELEM(gCacheManagerMethods));
}
} // namespace android
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