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gecko-dev/dom/plugins/base/nsPluginHost.cpp
Ehsan Akhgari 166aca09f9 Merge mozilla-central into mozilla-inbound
2012-04-24 21:29:44 -04:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Sean Echevarria <sean@beatnik.com>
* Håkan Waara <hwaara@chello.se>
* Josh Aas <josh@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* nsPluginHost.cpp - top-level plugin management code */
#include "nscore.h"
#include "nsPluginHost.h"
#include <stdio.h>
#include "prio.h"
#include "prmem.h"
#include "nsIComponentManager.h"
#include "nsNPAPIPlugin.h"
#include "nsNPAPIPluginStreamListener.h"
#include "nsNPAPIPluginInstance.h"
#include "nsIPluginStreamListener.h"
#include "nsIHTTPHeaderListener.h"
#include "nsIHttpHeaderVisitor.h"
#include "nsIObserverService.h"
#include "nsIHttpProtocolHandler.h"
#include "nsIHttpChannel.h"
#include "nsIHttpChannelInternal.h"
#include "nsIUploadChannel.h"
#include "nsIByteRangeRequest.h"
#include "nsIStreamListener.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsIURL.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsIProtocolProxyService.h"
#include "nsIStreamConverterService.h"
#include "nsIFile.h"
#if defined(XP_MACOSX)
#include "nsILocalFileMac.h"
#endif
#include "nsIInputStream.h"
#include "nsIIOService.h"
#include "nsIURL.h"
#include "nsIChannel.h"
#include "nsISeekableStream.h"
#include "nsNetUtil.h"
#include "nsIProgressEventSink.h"
#include "nsIDocument.h"
#include "nsICachingChannel.h"
#include "nsHashtable.h"
#include "nsIProxyInfo.h"
#include "nsPluginLogging.h"
#include "nsIScriptChannel.h"
#include "nsIBlocklistService.h"
#include "nsVersionComparator.h"
#include "nsIObjectLoadingContent.h"
#include "nsIWritablePropertyBag2.h"
#include "nsPluginStreamListenerPeer.h"
#include "mozilla/Preferences.h"
#include "nsEnumeratorUtils.h"
#include "nsXPCOM.h"
#include "nsXPCOMCID.h"
#include "nsISupportsPrimitives.h"
#include "nsXULAppAPI.h"
#include "nsIXULRuntime.h"
// for the dialog
#include "nsIStringBundle.h"
#include "nsIWindowWatcher.h"
#include "nsPIDOMWindow.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptGlobalObjectOwner.h"
#include "nsIPrincipal.h"
#include "nsNetCID.h"
#include "nsIDOMPlugin.h"
#include "nsIDOMMimeType.h"
#include "nsMimeTypes.h"
#include "prprf.h"
#include "nsThreadUtils.h"
#include "nsIInputStreamTee.h"
#include "nsIInterfaceInfoManager.h"
#include "xptinfo.h"
#include "nsIMIMEService.h"
#include "nsCExternalHandlerService.h"
#include "nsILocalFile.h"
#include "nsIFileChannel.h"
#include "nsPluginSafety.h"
#include "nsICharsetConverterManager.h"
#include "nsIPlatformCharset.h"
#include "nsIDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsXULAppAPI.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsIFile.h"
#include "nsPluginDirServiceProvider.h"
#include "nsPluginError.h"
#include "nsUnicharUtils.h"
#include "nsPluginManifestLineReader.h"
#include "nsIWeakReferenceUtils.h"
#include "nsIDOMElement.h"
#include "nsIDOMHTMLObjectElement.h"
#include "nsIDOMHTMLEmbedElement.h"
#include "nsIPresShell.h"
#include "nsIWebNavigation.h"
#include "nsISupportsArray.h"
#include "nsIDocShell.h"
#include "nsPluginNativeWindow.h"
#include "nsIScriptSecurityManager.h"
#include "nsIContentPolicy.h"
#include "nsContentPolicyUtils.h"
#include "nsContentErrors.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/Telemetry.h"
#include "nsIImageLoadingContent.h"
#include "mozilla/Preferences.h"
#if defined(XP_WIN)
#include "nsIWindowMediator.h"
#include "nsIBaseWindow.h"
#include "windows.h"
#include "winbase.h"
#endif
#ifdef ANDROID
#include <android/log.h>
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "GeckoPlugins" , ## args)
#endif
using namespace mozilla;
using mozilla::TimeStamp;
// Null out a strong ref to a linked list iteratively to avoid
// exhausting the stack (bug 486349).
#define NS_ITERATIVE_UNREF_LIST(type_, list_, mNext_) \
{ \
while (list_) { \
type_ temp = list_->mNext_; \
list_->mNext_ = nsnull; \
list_ = temp; \
} \
}
// this is the name of the directory which will be created
// to cache temporary files.
#define kPluginTmpDirName NS_LITERAL_CSTRING("plugtmp")
// Version of cached plugin info
// 0.01 first implementation
// 0.02 added caching of CanUnload to fix bug 105935
// 0.03 changed name, description and mime desc from string to bytes, bug 108246
// 0.04 added new mime entry point on Mac, bug 113464
// 0.05 added new entry point check for the default plugin, bug 132430
// 0.06 strip off suffixes in mime description strings, bug 53895
// 0.07 changed nsIRegistry to flat file support for caching plugins info
// 0.08 mime entry point on MachO, bug 137535
// 0.09 the file encoding is changed to UTF-8, bug 420285
// 0.10 added plugin versions on appropriate platforms, bug 427743
// 0.11 file name and full path fields now store expected values on all platforms, bug 488181
// 0.12 force refresh due to quicktime pdf claim fix, bug 611197
// 0.13 add architecture and list of invalid plugins, bug 616271
// 0.14 force refresh due to locale comparison fix, bug 611296
// 0.15 force refresh due to bug in reading Java plist MIME data, bug 638171
// The current plugin registry version (and the maximum version we know how to read)
static const char *kPluginRegistryVersion = "0.15";
// The minimum registry version we know how to read
static const char *kMinimumRegistryVersion = "0.9";
static NS_DEFINE_IID(kIPluginTagInfoIID, NS_IPLUGINTAGINFO_IID);
static const char kDirectoryServiceContractID[] = "@mozilla.org/file/directory_service;1";
// Registry keys for caching plugin info
static const char kPluginsRootKey[] = "software/plugins";
static const char kPluginsNameKey[] = "name";
static const char kPluginsDescKey[] = "description";
static const char kPluginsFilenameKey[] = "filename";
static const char kPluginsFullpathKey[] = "fullpath";
static const char kPluginsModTimeKey[] = "lastModTimeStamp";
static const char kPluginsCanUnload[] = "canUnload";
static const char kPluginsVersionKey[] = "version";
static const char kPluginsMimeTypeKey[] = "mimetype";
static const char kPluginsMimeDescKey[] = "description";
static const char kPluginsMimeExtKey[] = "extension";
#define kPluginRegistryFilename NS_LITERAL_CSTRING("pluginreg.dat")
#ifdef PLUGIN_LOGGING
PRLogModuleInfo* nsPluginLogging::gNPNLog = nsnull;
PRLogModuleInfo* nsPluginLogging::gNPPLog = nsnull;
PRLogModuleInfo* nsPluginLogging::gPluginLog = nsnull;
#endif
#define BRAND_PROPERTIES_URL "chrome://branding/locale/brand.properties"
#define PLUGIN_PROPERTIES_URL "chrome://global/locale/downloadProgress.properties"
// #defines for plugin cache and prefs
#define NS_PREF_MAX_NUM_CACHED_INSTANCES "browser.plugins.max_num_cached_plugins"
// Raise this from '10' to '50' to work around a bug in Apple's current Java
// plugins on OS X Lion and SnowLeopard. See bug 705931.
#define DEFAULT_NUMBER_OF_STOPPED_INSTANCES 50
#ifdef CALL_SAFETY_ON
// By default we run OOPP, so we don't want to cover up crashes.
bool gSkipPluginSafeCalls = true;
#endif
nsIFile *nsPluginHost::sPluginTempDir;
nsPluginHost *nsPluginHost::sInst;
NS_IMPL_ISUPPORTS0(nsInvalidPluginTag)
nsInvalidPluginTag::nsInvalidPluginTag(const char* aFullPath, PRInt64 aLastModifiedTime)
: mFullPath(aFullPath),
mLastModifiedTime(aLastModifiedTime),
mSeen(false)
{
}
nsInvalidPluginTag::~nsInvalidPluginTag()
{
}
// flat file reg funcs
static
bool ReadSectionHeader(nsPluginManifestLineReader& reader, const char *token)
{
do {
if (*reader.LinePtr() == '[') {
char* p = reader.LinePtr() + (reader.LineLength() - 1);
if (*p != ']')
break;
*p = 0;
char* values[1];
if (1 != reader.ParseLine(values, 1))
break;
// ignore the leading '['
if (PL_strcmp(values[0]+1, token)) {
break; // it's wrong token
}
return true;
}
} while (reader.NextLine());
return false;
}
// Little helper struct to asynchronously reframe any presentations (embedded)
// or reload any documents (full-page), that contained plugins
// which were shutdown as a result of a plugins.refresh(1)
class nsPluginDocReframeEvent: public nsRunnable {
public:
nsPluginDocReframeEvent(nsISupportsArray* aDocs) { mDocs = aDocs; }
NS_DECL_NSIRUNNABLE
nsCOMPtr<nsISupportsArray> mDocs;
};
NS_IMETHODIMP nsPluginDocReframeEvent::Run() {
NS_ENSURE_TRUE(mDocs, NS_ERROR_FAILURE);
PRUint32 c;
mDocs->Count(&c);
// for each document (which previously had a running instance), tell
// the frame constructor to rebuild
for (PRUint32 i = 0; i < c; i++) {
nsCOMPtr<nsIDocument> doc (do_QueryElementAt(mDocs, i));
if (doc) {
nsIPresShell *shell = doc->GetShell();
// if this document has a presentation shell, then it has frames and can be reframed
if (shell) {
/* A reframe will cause a fresh object frame, instance owner, and instance
* to be created. Reframing of the entire document is necessary as we may have
* recently found new plugins and we want a shot at trying to use them instead
* of leaving alternate renderings.
* We do not want to completely reload all the documents that had running plugins
* because we could possibly trigger a script to run in the unload event handler
* which may want to access our defunct plugin and cause us to crash.
*/
shell->ReconstructFrames(); // causes reframe of document
} else { // no pres shell --> full-page plugin
NS_NOTREACHED("all plugins should have a pres shell!");
}
}
}
return mDocs->Clear();
}
static bool UnloadPluginsASAP()
{
return Preferences::GetBool("dom.ipc.plugins.unloadASAP", false);
}
nsPluginHost::nsPluginHost()
// No need to initialize members to nsnull, false etc because this class
// has a zeroing operator new.
{
// check to see if pref is set at startup to let plugins take over in
// full page mode for certain image mime types that we handle internally
mOverrideInternalTypes =
Preferences::GetBool("plugin.override_internal_types", false);
mPluginsDisabled = Preferences::GetBool("plugin.disable", false);
Preferences::AddStrongObserver(this, "plugin.disable");
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
if (obsService) {
obsService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
#ifdef MOZ_WIDGET_ANDROID
obsService->AddObserver(this, "application-foreground", false);
obsService->AddObserver(this, "application-background", false);
#endif
}
#ifdef PLUGIN_LOGGING
nsPluginLogging::gNPNLog = PR_NewLogModule(NPN_LOG_NAME);
nsPluginLogging::gNPPLog = PR_NewLogModule(NPP_LOG_NAME);
nsPluginLogging::gPluginLog = PR_NewLogModule(PLUGIN_LOG_NAME);
PR_LOG(nsPluginLogging::gNPNLog, PLUGIN_LOG_ALWAYS,("NPN Logging Active!\n"));
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_ALWAYS,("General Plugin Logging Active! (nsPluginHost::ctor)\n"));
PR_LOG(nsPluginLogging::gNPPLog, PLUGIN_LOG_ALWAYS,("NPP Logging Active!\n"));
PLUGIN_LOG(PLUGIN_LOG_ALWAYS,("nsPluginHost::ctor\n"));
PR_LogFlush();
#endif
#ifdef MAC_CARBON_PLUGINS
mVisiblePluginTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
mHiddenPluginTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
#endif
}
nsPluginHost::~nsPluginHost()
{
PLUGIN_LOG(PLUGIN_LOG_ALWAYS,("nsPluginHost::dtor\n"));
UnloadPlugins();
sInst = nsnull;
}
NS_IMPL_ISUPPORTS4(nsPluginHost,
nsIPluginHost,
nsIObserver,
nsITimerCallback,
nsISupportsWeakReference)
nsPluginHost*
nsPluginHost::GetInst()
{
if (!sInst) {
sInst = new nsPluginHost();
if (!sInst)
return nsnull;
NS_ADDREF(sInst);
}
NS_ADDREF(sInst);
return sInst;
}
bool nsPluginHost::IsRunningPlugin(nsPluginTag * aPluginTag)
{
if (!aPluginTag || !aPluginTag->mPlugin) {
return false;
}
for (PRUint32 i = 0; i < mInstances.Length(); i++) {
nsNPAPIPluginInstance *instance = mInstances[i].get();
if (instance &&
instance->GetPlugin() == aPluginTag->mPlugin &&
instance->IsRunning()) {
return true;
}
}
return false;
}
nsresult nsPluginHost::ReloadPlugins(bool reloadPages)
{
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::ReloadPlugins Begin reloadPages=%d, active_instance_count=%d\n",
reloadPages, mInstances.Length()));
nsresult rv = NS_OK;
// this will create the initial plugin list out of cache
// if it was not created yet
if (!mPluginsLoaded)
return LoadPlugins();
// we are re-scanning plugins. New plugins may have been added, also some
// plugins may have been removed, so we should probably shut everything down
// but don't touch running (active and not stopped) plugins
// check if plugins changed, no need to do anything else
// if no changes to plugins have been made
// false instructs not to touch the plugin list, just to
// look for possible changes
bool pluginschanged = true;
FindPlugins(false, &pluginschanged);
// if no changed detected, return an appropriate error code
if (!pluginschanged)
return NS_ERROR_PLUGINS_PLUGINSNOTCHANGED;
nsCOMPtr<nsISupportsArray> instsToReload;
if (reloadPages) {
NS_NewISupportsArray(getter_AddRefs(instsToReload));
// Then stop any running plugin instances but hold on to the documents in the array
// We are going to need to restart the instances in these documents later
DestroyRunningInstances(instsToReload, nsnull);
}
// shutdown plugins and kill the list if there are no running plugins
nsRefPtr<nsPluginTag> prev;
nsRefPtr<nsPluginTag> next;
for (nsRefPtr<nsPluginTag> p = mPlugins; p != nsnull;) {
next = p->mNext;
// only remove our plugin from the list if it's not running.
if (!IsRunningPlugin(p)) {
if (p == mPlugins)
mPlugins = next;
else
prev->mNext = next;
p->mNext = nsnull;
// attempt to unload plugins whenever they are removed from the list
p->TryUnloadPlugin(false);
p = next;
continue;
}
prev = p;
p = next;
}
// set flags
mPluginsLoaded = false;
// load them again
rv = LoadPlugins();
// If we have shut down any plugin instances, we've now got to restart them.
// Post an event to do the rest as we are going to be destroying the frame tree and we also want
// any posted unload events to finish
PRUint32 c;
if (reloadPages &&
instsToReload &&
NS_SUCCEEDED(instsToReload->Count(&c)) &&
c > 0) {
nsCOMPtr<nsIRunnable> ev = new nsPluginDocReframeEvent(instsToReload);
if (ev)
NS_DispatchToCurrentThread(ev);
}
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::ReloadPlugins End active_instance_count=%d\n",
mInstances.Length()));
return rv;
}
#define NS_RETURN_UASTRING_SIZE 128
nsresult nsPluginHost::UserAgent(const char **retstring)
{
static char resultString[NS_RETURN_UASTRING_SIZE];
nsresult res;
nsCOMPtr<nsIHttpProtocolHandler> http = do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http", &res);
if (NS_FAILED(res))
return res;
nsCAutoString uaString;
res = http->GetUserAgent(uaString);
if (NS_SUCCEEDED(res)) {
if (NS_RETURN_UASTRING_SIZE > uaString.Length()) {
PL_strcpy(resultString, uaString.get());
} else {
// Copy as much of UA string as we can (terminate at right-most space).
PL_strncpy(resultString, uaString.get(), NS_RETURN_UASTRING_SIZE);
for (int i = NS_RETURN_UASTRING_SIZE - 1; i >= 0; i--) {
if (i == 0) {
resultString[NS_RETURN_UASTRING_SIZE - 1] = '\0';
}
else if (resultString[i] == ' ') {
resultString[i] = '\0';
break;
}
}
}
*retstring = resultString;
}
else {
*retstring = nsnull;
}
PLUGIN_LOG(PLUGIN_LOG_NORMAL, ("nsPluginHost::UserAgent return=%s\n", *retstring));
return res;
}
nsresult nsPluginHost::GetPrompt(nsIPluginInstanceOwner *aOwner, nsIPrompt **aPrompt)
{
nsresult rv;
nsCOMPtr<nsIPrompt> prompt;
nsCOMPtr<nsIWindowWatcher> wwatch = do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
if (wwatch) {
nsCOMPtr<nsIDOMWindow> domWindow;
if (aOwner) {
nsCOMPtr<nsIDocument> document;
aOwner->GetDocument(getter_AddRefs(document));
if (document) {
domWindow = document->GetWindow();
}
}
if (!domWindow) {
wwatch->GetWindowByName(NS_LITERAL_STRING("_content").get(), nsnull, getter_AddRefs(domWindow));
}
rv = wwatch->GetNewPrompter(domWindow, getter_AddRefs(prompt));
}
NS_IF_ADDREF(*aPrompt = prompt);
return rv;
}
nsresult nsPluginHost::GetURL(nsISupports* pluginInst,
const char* url,
const char* target,
nsIPluginStreamListener* streamListener,
const char* altHost,
const char* referrer,
bool forceJSEnabled)
{
return GetURLWithHeaders(static_cast<nsNPAPIPluginInstance*>(pluginInst),
url, target, streamListener, altHost, referrer,
forceJSEnabled, nsnull, nsnull);
}
nsresult nsPluginHost::GetURLWithHeaders(nsNPAPIPluginInstance* pluginInst,
const char* url,
const char* target,
nsIPluginStreamListener* streamListener,
const char* altHost,
const char* referrer,
bool forceJSEnabled,
PRUint32 getHeadersLength,
const char* getHeaders)
{
// we can only send a stream back to the plugin (as specified by a
// null target) if we also have a nsIPluginStreamListener to talk to
if (!target && !streamListener)
return NS_ERROR_ILLEGAL_VALUE;
nsresult rv = DoURLLoadSecurityCheck(pluginInst, url);
if (NS_FAILED(rv))
return rv;
if (target) {
nsCOMPtr<nsIPluginInstanceOwner> owner;
rv = pluginInst->GetOwner(getter_AddRefs(owner));
if (owner) {
if ((0 == PL_strcmp(target, "newwindow")) ||
(0 == PL_strcmp(target, "_new")))
target = "_blank";
else if (0 == PL_strcmp(target, "_current"))
target = "_self";
rv = owner->GetURL(url, target, nsnull, nsnull, 0);
}
}
if (streamListener)
rv = NewPluginURLStream(NS_ConvertUTF8toUTF16(url), pluginInst,
streamListener, nsnull,
getHeaders, getHeadersLength);
return rv;
}
nsresult nsPluginHost::PostURL(nsISupports* pluginInst,
const char* url,
PRUint32 postDataLen,
const char* postData,
bool isFile,
const char* target,
nsIPluginStreamListener* streamListener,
const char* altHost,
const char* referrer,
bool forceJSEnabled,
PRUint32 postHeadersLength,
const char* postHeaders)
{
nsresult rv;
// we can only send a stream back to the plugin (as specified
// by a null target) if we also have a nsIPluginStreamListener
// to talk to also
if (!target && !streamListener)
return NS_ERROR_ILLEGAL_VALUE;
nsNPAPIPluginInstance* instance = static_cast<nsNPAPIPluginInstance*>(pluginInst);
rv = DoURLLoadSecurityCheck(instance, url);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIInputStream> postStream;
if (isFile) {
nsCOMPtr<nsIFile> file;
rv = CreateTempFileToPost(postData, getter_AddRefs(file));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIInputStream> fileStream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(fileStream),
file,
PR_RDONLY,
0600,
nsIFileInputStream::DELETE_ON_CLOSE |
nsIFileInputStream::CLOSE_ON_EOF);
if (NS_FAILED(rv))
return rv;
rv = NS_NewBufferedInputStream(getter_AddRefs(postStream), fileStream, 8192);
if (NS_FAILED(rv))
return rv;
} else {
char *dataToPost;
PRUint32 newDataToPostLen;
ParsePostBufferToFixHeaders(postData, postDataLen, &dataToPost, &newDataToPostLen);
if (!dataToPost)
return NS_ERROR_UNEXPECTED;
nsCOMPtr<nsIStringInputStream> sis = do_CreateInstance("@mozilla.org/io/string-input-stream;1", &rv);
if (!sis) {
NS_Free(dataToPost);
return rv;
}
// data allocated by ParsePostBufferToFixHeaders() is managed and
// freed by the string stream.
postDataLen = newDataToPostLen;
sis->AdoptData(dataToPost, postDataLen);
postStream = sis;
}
if (target) {
nsCOMPtr<nsIPluginInstanceOwner> owner;
rv = instance->GetOwner(getter_AddRefs(owner));
if (owner) {
if ((0 == PL_strcmp(target, "newwindow")) ||
(0 == PL_strcmp(target, "_new"))) {
target = "_blank";
} else if (0 == PL_strcmp(target, "_current")) {
target = "_self";
}
rv = owner->GetURL(url, target, postStream,
(void*)postHeaders, postHeadersLength);
}
}
// if we don't have a target, just create a stream. This does
// NS_OpenURI()!
if (streamListener)
rv = NewPluginURLStream(NS_ConvertUTF8toUTF16(url), instance,
streamListener,
postStream, postHeaders, postHeadersLength);
return rv;
}
/* This method queries the prefs for proxy information.
* It has been tested and is known to work in the following three cases
* when no proxy host or port is specified
* when only the proxy host is specified
* when only the proxy port is specified
* This method conforms to the return code specified in
* http://developer.netscape.com/docs/manuals/proxy/adminnt/autoconf.htm#1020923
* with the exception that multiple values are not implemented.
*/
nsresult nsPluginHost::FindProxyForURL(const char* url, char* *result)
{
if (!url || !result) {
return NS_ERROR_INVALID_ARG;
}
nsresult res;
nsCOMPtr<nsIURI> uriIn;
nsCOMPtr<nsIProtocolProxyService> proxyService;
nsCOMPtr<nsIIOService> ioService;
proxyService = do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &res);
if (NS_FAILED(res) || !proxyService)
return res;
ioService = do_GetService(NS_IOSERVICE_CONTRACTID, &res);
if (NS_FAILED(res) || !ioService)
return res;
// make an nsURI from the argument url
res = ioService->NewURI(nsDependentCString(url), nsnull, nsnull, getter_AddRefs(uriIn));
if (NS_FAILED(res))
return res;
nsCOMPtr<nsIProxyInfo> pi;
res = proxyService->Resolve(uriIn, 0, getter_AddRefs(pi));
if (NS_FAILED(res))
return res;
nsCAutoString host, type;
PRInt32 port = -1;
// These won't fail, and even if they do... we'll be ok.
if (pi) {
pi->GetType(type);
pi->GetHost(host);
pi->GetPort(&port);
}
if (!pi || host.IsEmpty() || port <= 0 || host.EqualsLiteral("direct")) {
*result = PL_strdup("DIRECT");
} else if (type.EqualsLiteral("http")) {
*result = PR_smprintf("PROXY %s:%d", host.get(), port);
} else if (type.EqualsLiteral("socks4")) {
*result = PR_smprintf("SOCKS %s:%d", host.get(), port);
} else if (type.EqualsLiteral("socks")) {
// XXX - this is socks5, but there is no API for us to tell the
// plugin that fact. SOCKS for now, in case the proxy server
// speaks SOCKS4 as well. See bug 78176
// For a long time this was returning an http proxy type, so
// very little is probably broken by this
*result = PR_smprintf("SOCKS %s:%d", host.get(), port);
} else {
NS_ASSERTION(false, "Unknown proxy type!");
*result = PL_strdup("DIRECT");
}
if (nsnull == *result)
res = NS_ERROR_OUT_OF_MEMORY;
return res;
}
nsresult nsPluginHost::Init()
{
return NS_OK;
}
nsresult nsPluginHost::UnloadPlugins()
{
PLUGIN_LOG(PLUGIN_LOG_NORMAL, ("nsPluginHost::UnloadPlugins Called\n"));
if (!mPluginsLoaded)
return NS_OK;
// we should call nsIPluginInstance::Stop and nsIPluginInstance::SetWindow
// for those plugins who want it
DestroyRunningInstances(nsnull, nsnull);
nsPluginTag *pluginTag;
for (pluginTag = mPlugins; pluginTag; pluginTag = pluginTag->mNext) {
pluginTag->TryUnloadPlugin(true);
}
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
// Lets remove any of the temporary files that we created.
if (sPluginTempDir) {
sPluginTempDir->Remove(true);
NS_RELEASE(sPluginTempDir);
}
#ifdef XP_WIN
if (mPrivateDirServiceProvider) {
nsCOMPtr<nsIDirectoryService> dirService =
do_GetService(kDirectoryServiceContractID);
if (dirService)
dirService->UnregisterProvider(mPrivateDirServiceProvider);
mPrivateDirServiceProvider = nsnull;
}
#endif /* XP_WIN */
mPluginsLoaded = false;
return NS_OK;
}
void nsPluginHost::OnPluginInstanceDestroyed(nsPluginTag* aPluginTag)
{
bool hasInstance = false;
for (PRUint32 i = 0; i < mInstances.Length(); i++) {
if (TagForPlugin(mInstances[i]->GetPlugin()) == aPluginTag) {
hasInstance = true;
break;
}
}
// We have some options for unloading plugins if they have no instances.
//
// Unloading plugins immediately can be bad - some plugins retain state
// between instances even when there are none. This is largely limited to
// going from one page to another, so state is retained without an instance
// for only a very short period of time. In order to allow this to work
// we don't unload plugins immediately by default. This is supported
// via a hidden user pref though.
//
// Another reason not to unload immediately is that loading is expensive,
// and it is better to leave popular plugins loaded.
//
// Our default behavior is to try to unload a plugin three minutes after
// its last instance is destroyed. This seems like a reasonable compromise
// that allows us to reclaim memory while allowing short state retention
// and avoid perf hits for loading popular plugins.
if (!hasInstance) {
if (UnloadPluginsASAP()) {
aPluginTag->TryUnloadPlugin(false);
} else {
if (aPluginTag->mUnloadTimer) {
aPluginTag->mUnloadTimer->Cancel();
} else {
aPluginTag->mUnloadTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
}
aPluginTag->mUnloadTimer->InitWithCallback(this, 1000 * 60 * 3, nsITimer::TYPE_ONE_SHOT);
}
}
}
nsresult
nsPluginHost::GetPluginTempDir(nsIFile **aDir)
{
if (!sPluginTempDir) {
nsCOMPtr<nsIFile> tmpDir;
nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR,
getter_AddRefs(tmpDir));
NS_ENSURE_SUCCESS(rv, rv);
rv = tmpDir->AppendNative(kPluginTmpDirName);
// make it unique, and mode == 0700, not world-readable
rv = tmpDir->CreateUnique(nsIFile::DIRECTORY_TYPE, 0700);
NS_ENSURE_SUCCESS(rv, rv);
tmpDir.swap(sPluginTempDir);
}
return sPluginTempDir->Clone(aDir);
}
nsresult
nsPluginHost::InstantiateEmbeddedPluginInstance(const char *aMimeType, nsIURI* aURL,
nsObjectLoadingContent *aContent,
nsPluginInstanceOwner** aOwner)
{
NS_ENSURE_ARG_POINTER(aOwner);
#ifdef PLUGIN_LOGGING
nsCAutoString urlSpec;
if (aURL)
aURL->GetAsciiSpec(urlSpec);
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_NORMAL,
("nsPluginHost::InstantiateEmbeddedPlugin Begin mime=%s, url=%s\n",
aMimeType, urlSpec.get()));
PR_LogFlush();
#endif
nsRefPtr<nsPluginInstanceOwner> instanceOwner = new nsPluginInstanceOwner();
if (!instanceOwner) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIContent> ourContent = do_QueryInterface(static_cast<nsIImageLoadingContent*>(aContent));
nsresult rv = instanceOwner->Init(ourContent);
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIPluginTagInfo> pti;
rv = instanceOwner->QueryInterface(kIPluginTagInfoIID, getter_AddRefs(pti));
if (NS_FAILED(rv)) {
return rv;
}
nsPluginTagType tagType;
rv = pti->GetTagType(&tagType);
if (NS_FAILED(rv)) {
return rv;
}
if (tagType != nsPluginTagType_Embed &&
tagType != nsPluginTagType_Applet &&
tagType != nsPluginTagType_Object) {
return NS_ERROR_FAILURE;
}
// Security checks. Can't do security checks without a URI - hopefully the plugin
// will take care of that.
if (aURL) {
nsCOMPtr<nsIScriptSecurityManager> secMan =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv; // Better fail if we can't do security checks
nsCOMPtr<nsIDocument> doc;
instanceOwner->GetDocument(getter_AddRefs(doc));
if (!doc)
return NS_ERROR_NULL_POINTER;
rv = secMan->CheckLoadURIWithPrincipal(doc->NodePrincipal(), aURL, 0);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDOMElement> elem;
pti->GetDOMElement(getter_AddRefs(elem));
PRInt16 shouldLoad = nsIContentPolicy::ACCEPT; // default permit
nsresult rv =
NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_OBJECT,
aURL,
doc->NodePrincipal(),
elem,
nsDependentCString(aMimeType ? aMimeType : ""),
nsnull, //extra
&shouldLoad);
if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad))
return NS_ERROR_CONTENT_BLOCKED_SHOW_ALT;
}
bool isJava = false;
nsPluginTag* pluginTag = FindPluginForType(aMimeType, true);
if (pluginTag) {
isJava = pluginTag->mIsJavaPlugin;
}
// Determine if the scheme of this URL is one we can handle internally because we should
// only open the initial stream if it's one that we can handle internally. Otherwise
// |NS_OpenURI| in |InstantiateEmbeddedPlugin| may open up a OS protocal registered helper app
// Also set bCanHandleInternally to true if aAllowOpeningStreams is
// false; we don't want to do any network traffic in that case.
bool bCanHandleInternally = false;
nsCAutoString scheme;
if (aURL && NS_SUCCEEDED(aURL->GetScheme(scheme))) {
nsCAutoString contractID(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX);
contractID += scheme;
ToLowerCase(contractID);
nsCOMPtr<nsIProtocolHandler> handler = do_GetService(contractID.get());
if (handler)
bCanHandleInternally = true;
}
// if we don't have a MIME type at this point, we still have one more chance by
// opening the stream and seeing if the server hands one back
if (!aMimeType) {
if (bCanHandleInternally && !aContent->SrcStreamLoading()) {
NewEmbeddedPluginStream(aURL, aContent, nsnull);
}
return NS_ERROR_FAILURE;
}
rv = SetUpPluginInstance(aMimeType, aURL, instanceOwner);
if (NS_FAILED(rv)) {
return NS_ERROR_FAILURE;
}
nsRefPtr<nsNPAPIPluginInstance> instance;
rv = instanceOwner->GetInstance(getter_AddRefs(instance));
if (NS_FAILED(rv)) {
return rv;
}
if (instance) {
instanceOwner->CreateWidget();
// If we've got a native window, the let the plugin know about it.
instanceOwner->CallSetWindow();
// create an initial stream with data
// don't make the stream if it's a java applet or we don't have SRC or DATA attribute
// no need to check for "data" as it would have been converted to "src"
const char *value;
bool havedata = NS_SUCCEEDED(pti->GetAttribute("SRC", &value));
if (havedata && !isJava && bCanHandleInternally && !aContent->SrcStreamLoading()) {
NewEmbeddedPluginStream(aURL, aContent, instance.get());
}
}
// At this point we consider instantiation to be successful. Do not return an error.
instanceOwner.forget(aOwner);
#ifdef PLUGIN_LOGGING
nsCAutoString urlSpec2;
if (aURL != nsnull) aURL->GetAsciiSpec(urlSpec2);
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_NORMAL,
("nsPluginHost::InstantiateEmbeddedPlugin Finished mime=%s, rv=%d, url=%s\n",
aMimeType, rv, urlSpec2.get()));
PR_LogFlush();
#endif
return NS_OK;
}
nsresult nsPluginHost::InstantiateFullPagePluginInstance(const char *aMimeType,
nsIURI* aURI,
nsObjectLoadingContent *aContent,
nsPluginInstanceOwner **aOwner,
nsIStreamListener **aStreamListener)
{
#ifdef PLUGIN_LOGGING
nsCAutoString urlSpec;
aURI->GetSpec(urlSpec);
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::InstantiateFullPagePlugin Begin mime=%s, url=%s\n",
aMimeType, urlSpec.get()));
#endif
nsRefPtr<nsPluginInstanceOwner> instanceOwner = new nsPluginInstanceOwner();
if (!instanceOwner) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIContent> ourContent = do_QueryInterface(static_cast<nsIImageLoadingContent*>(aContent));
nsresult rv = instanceOwner->Init(ourContent);
if (NS_FAILED(rv)) {
return rv;
}
rv = SetUpPluginInstance(aMimeType, aURI, instanceOwner);
if (NS_FAILED(rv)) {
return rv;
}
nsRefPtr<nsNPAPIPluginInstance> instance;
instanceOwner->GetInstance(getter_AddRefs(instance));
if (!instance) {
return NS_ERROR_FAILURE;
}
NPWindow* win = nsnull;
instanceOwner->GetWindow(win);
if (!win) {
return NS_ERROR_FAILURE;
}
// Set up any widget that might be required.
instanceOwner->CreateWidget();
instanceOwner->CallSetWindow();
rv = NewFullPagePluginStreamListener(aURI, instance.get(), aStreamListener);
if (NS_FAILED(rv)) {
return rv;
}
// Call SetWindow again in case something changed.
instanceOwner->CallSetWindow();
instanceOwner.forget(aOwner);
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::InstantiateFullPagePlugin End mime=%s, rv=%d, url=%s\n",
aMimeType, rv, urlSpec.get()));
return NS_OK;
}
nsPluginTag*
nsPluginHost::FindTagForLibrary(PRLibrary* aLibrary)
{
nsPluginTag* pluginTag;
for (pluginTag = mPlugins; pluginTag; pluginTag = pluginTag->mNext) {
if (pluginTag->mLibrary == aLibrary) {
return pluginTag;
}
}
return nsnull;
}
nsPluginTag*
nsPluginHost::TagForPlugin(nsNPAPIPlugin* aPlugin)
{
nsPluginTag* pluginTag;
for (pluginTag = mPlugins; pluginTag; pluginTag = pluginTag->mNext) {
if (pluginTag->mPlugin == aPlugin) {
return pluginTag;
}
}
// a plugin should never exist without a corresponding tag
NS_ERROR("TagForPlugin has failed");
return nsnull;
}
nsresult nsPluginHost::SetUpPluginInstance(const char *aMimeType,
nsIURI *aURL,
nsIPluginInstanceOwner *aOwner)
{
NS_ENSURE_ARG_POINTER(aOwner);
nsresult rv = TrySetUpPluginInstance(aMimeType, aURL, aOwner);
if (NS_SUCCEEDED(rv)) {
return rv;
}
// If we failed to load a plugin instance we'll try again after
// reloading our plugin list. Only do that once per document to
// avoid redundant high resource usage on pages with multiple
// unkown instance types. We'll do that by caching the document.
nsCOMPtr<nsIDocument> document;
aOwner->GetDocument(getter_AddRefs(document));
nsCOMPtr<nsIDocument> currentdocument = do_QueryReferent(mCurrentDocument);
if (document == currentdocument) {
return rv;
}
mCurrentDocument = do_GetWeakReference(document);
// Don't try to set up an instance again if nothing changed.
if (ReloadPlugins(false) == NS_ERROR_PLUGINS_PLUGINSNOTCHANGED) {
return rv;
}
return TrySetUpPluginInstance(aMimeType, aURL, aOwner);
}
nsresult
nsPluginHost::TrySetUpPluginInstance(const char *aMimeType,
nsIURI *aURL,
nsIPluginInstanceOwner *aOwner)
{
#ifdef PLUGIN_LOGGING
nsCAutoString urlSpec;
if (aURL != nsnull) aURL->GetSpec(urlSpec);
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_NORMAL,
("nsPluginHost::TrySetupPluginInstance Begin mime=%s, owner=%p, url=%s\n",
aMimeType, aOwner, urlSpec.get()));
PR_LogFlush();
#endif
const char* mimetype = nsnull;
// if don't have a mimetype or no plugin can handle this mimetype
// check by file extension
nsPluginTag* pluginTag = FindPluginForType(aMimeType, true);
if (!pluginTag) {
nsCOMPtr<nsIURL> url = do_QueryInterface(aURL);
if (!url) return NS_ERROR_FAILURE;
nsCAutoString fileExtension;
url->GetFileExtension(fileExtension);
// if we don't have an extension or no plugin for this extension,
// return failure as there is nothing more we can do
if (fileExtension.IsEmpty() ||
!(pluginTag = FindPluginEnabledForExtension(fileExtension.get(),
mimetype))) {
return NS_ERROR_FAILURE;
}
}
else {
mimetype = aMimeType;
}
NS_ASSERTION(pluginTag, "Must have plugin tag here!");
nsRefPtr<nsNPAPIPlugin> plugin;
GetPlugin(mimetype, getter_AddRefs(plugin));
if (!plugin) {
return NS_ERROR_FAILURE;
}
nsRefPtr<nsNPAPIPluginInstance> instance = new nsNPAPIPluginInstance();
// This will create the owning reference. The connection must be made between the
// instance and the instance owner before initialization. Plugins can call into
// the browser during initialization.
aOwner->SetInstance(instance.get());
// this should not addref the instance or owner
// except in some cases not Java, see bug 140931
// our COM pointer will free the peer
nsresult rv = instance->Initialize(plugin.get(), aOwner, mimetype);
if (NS_FAILED(rv)) {
aOwner->SetInstance(nsnull);
return rv;
}
// Cancel the plugin unload timer since we are creating
// an instance for it.
if (pluginTag->mUnloadTimer) {
pluginTag->mUnloadTimer->Cancel();
}
mInstances.AppendElement(instance.get());
#ifdef PLUGIN_LOGGING
nsCAutoString urlSpec2;
if (aURL)
aURL->GetSpec(urlSpec2);
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_BASIC,
("nsPluginHost::TrySetupPluginInstance Finished mime=%s, rv=%d, owner=%p, url=%s\n",
aMimeType, rv, aOwner, urlSpec2.get()));
PR_LogFlush();
#endif
return rv;
}
nsresult
nsPluginHost::IsPluginEnabledForType(const char* aMimeType)
{
nsPluginTag *plugin = FindPluginForType(aMimeType, true);
if (plugin)
return NS_OK;
// Pass false as the second arg so we can return NS_ERROR_PLUGIN_DISABLED
// for disabled plug-ins.
plugin = FindPluginForType(aMimeType, false);
if (!plugin)
return NS_ERROR_FAILURE;
if (!plugin->IsEnabled()) {
if (plugin->HasFlag(NS_PLUGIN_FLAG_BLOCKLISTED))
return NS_ERROR_PLUGIN_BLOCKLISTED;
else
return NS_ERROR_PLUGIN_DISABLED;
}
return NS_OK;
}
// check comma delimitered extensions
static int CompareExtensions(const char *aExtensionList, const char *aExtension)
{
if (!aExtensionList || !aExtension)
return -1;
const char *pExt = aExtensionList;
const char *pComma = strchr(pExt, ',');
if (!pComma)
return PL_strcasecmp(pExt, aExtension);
int extlen = strlen(aExtension);
while (pComma) {
int length = pComma - pExt;
if (length == extlen && 0 == PL_strncasecmp(aExtension, pExt, length))
return 0;
pComma++;
pExt = pComma;
pComma = strchr(pExt, ',');
}
// the last one
return PL_strcasecmp(pExt, aExtension);
}
nsresult
nsPluginHost::IsPluginEnabledForExtension(const char* aExtension,
const char* &aMimeType)
{
nsPluginTag *plugin = FindPluginEnabledForExtension(aExtension, aMimeType);
if (plugin)
return NS_OK;
return NS_ERROR_FAILURE;
}
class DOMMimeTypeImpl : public nsIDOMMimeType {
public:
NS_DECL_ISUPPORTS
DOMMimeTypeImpl(nsPluginTag* aTag, PRUint32 aMimeTypeIndex)
{
if (!aTag)
return;
CopyUTF8toUTF16(aTag->mMimeDescriptions[aMimeTypeIndex], mDescription);
CopyUTF8toUTF16(aTag->mExtensions[aMimeTypeIndex], mSuffixes);
CopyUTF8toUTF16(aTag->mMimeTypes[aMimeTypeIndex], mType);
}
virtual ~DOMMimeTypeImpl() {
}
NS_METHOD GetDescription(nsAString& aDescription)
{
aDescription.Assign(mDescription);
return NS_OK;
}
NS_METHOD GetEnabledPlugin(nsIDOMPlugin** aEnabledPlugin)
{
// this has to be implemented by the DOM version.
*aEnabledPlugin = nsnull;
return NS_OK;
}
NS_METHOD GetSuffixes(nsAString& aSuffixes)
{
aSuffixes.Assign(mSuffixes);
return NS_OK;
}
NS_METHOD GetType(nsAString& aType)
{
aType.Assign(mType);
return NS_OK;
}
private:
nsString mDescription;
nsString mSuffixes;
nsString mType;
};
NS_IMPL_ISUPPORTS1(DOMMimeTypeImpl, nsIDOMMimeType)
class DOMPluginImpl : public nsIDOMPlugin {
public:
NS_DECL_ISUPPORTS
DOMPluginImpl(nsPluginTag* aPluginTag) : mPluginTag(aPluginTag)
{
}
virtual ~DOMPluginImpl() {
}
NS_METHOD GetDescription(nsAString& aDescription)
{
CopyUTF8toUTF16(mPluginTag.mDescription, aDescription);
return NS_OK;
}
NS_METHOD GetFilename(nsAString& aFilename)
{
if (Preferences::GetBool("plugin.expose_full_path", false)) {
CopyUTF8toUTF16(mPluginTag.mFullPath, aFilename);
} else {
CopyUTF8toUTF16(mPluginTag.mFileName, aFilename);
}
return NS_OK;
}
NS_METHOD GetVersion(nsAString& aVersion)
{
CopyUTF8toUTF16(mPluginTag.mVersion, aVersion);
return NS_OK;
}
NS_METHOD GetName(nsAString& aName)
{
CopyUTF8toUTF16(mPluginTag.mName, aName);
return NS_OK;
}
NS_METHOD GetLength(PRUint32* aLength)
{
*aLength = mPluginTag.mMimeTypes.Length();
return NS_OK;
}
NS_METHOD Item(PRUint32 aIndex, nsIDOMMimeType** aReturn)
{
nsIDOMMimeType* mimeType = new DOMMimeTypeImpl(&mPluginTag, aIndex);
NS_IF_ADDREF(mimeType);
*aReturn = mimeType;
return NS_OK;
}
NS_METHOD NamedItem(const nsAString& aName, nsIDOMMimeType** aReturn)
{
for (int i = mPluginTag.mMimeTypes.Length() - 1; i >= 0; --i) {
if (aName.Equals(NS_ConvertUTF8toUTF16(mPluginTag.mMimeTypes[i])))
return Item(i, aReturn);
}
return NS_OK;
}
private:
nsPluginTag mPluginTag;
};
NS_IMPL_ISUPPORTS1(DOMPluginImpl, nsIDOMPlugin)
nsresult
nsPluginHost::GetPluginCount(PRUint32* aPluginCount)
{
LoadPlugins();
PRUint32 count = 0;
nsPluginTag* plugin = mPlugins;
while (plugin != nsnull) {
if (plugin->IsEnabled()) {
++count;
}
plugin = plugin->mNext;
}
*aPluginCount = count;
return NS_OK;
}
nsresult
nsPluginHost::GetPlugins(PRUint32 aPluginCount, nsIDOMPlugin** aPluginArray)
{
LoadPlugins();
nsPluginTag* plugin = mPlugins;
for (PRUint32 i = 0; i < aPluginCount && plugin; plugin = plugin->mNext) {
if (plugin->IsEnabled()) {
nsIDOMPlugin* domPlugin = new DOMPluginImpl(plugin);
NS_IF_ADDREF(domPlugin);
aPluginArray[i++] = domPlugin;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPluginHost::GetPluginTags(PRUint32* aPluginCount, nsIPluginTag*** aResults)
{
LoadPlugins();
PRUint32 count = 0;
nsRefPtr<nsPluginTag> plugin = mPlugins;
while (plugin != nsnull) {
count++;
plugin = plugin->mNext;
}
*aResults = static_cast<nsIPluginTag**>
(nsMemory::Alloc(count * sizeof(**aResults)));
if (!*aResults)
return NS_ERROR_OUT_OF_MEMORY;
*aPluginCount = count;
plugin = mPlugins;
for (PRUint32 i = 0; i < count; i++) {
(*aResults)[i] = plugin;
NS_ADDREF((*aResults)[i]);
plugin = plugin->mNext;
}
return NS_OK;
}
nsPluginTag*
nsPluginHost::FindPluginForType(const char* aMimeType,
bool aCheckEnabled)
{
if (!aMimeType) {
return nsnull;
}
LoadPlugins();
nsPluginTag *plugin = mPlugins;
while (plugin) {
if (!aCheckEnabled || plugin->IsEnabled()) {
PRInt32 mimeCount = plugin->mMimeTypes.Length();
for (PRInt32 i = 0; i < mimeCount; i++) {
if (0 == PL_strcasecmp(plugin->mMimeTypes[i].get(), aMimeType)) {
return plugin;
}
}
}
plugin = plugin->mNext;
}
return nsnull;
}
nsPluginTag*
nsPluginHost::FindPluginEnabledForExtension(const char* aExtension,
const char*& aMimeType)
{
if (!aExtension) {
return nsnull;
}
LoadPlugins();
nsPluginTag *plugin = mPlugins;
while (plugin) {
if (plugin->IsEnabled()) {
PRInt32 variants = plugin->mExtensions.Length();
for (PRInt32 i = 0; i < variants; i++) {
// mExtensionsArray[cnt] is a list of extensions separated by commas
if (0 == CompareExtensions(plugin->mExtensions[i].get(), aExtension)) {
aMimeType = plugin->mMimeTypes[i].get();
return plugin;
}
}
}
plugin = plugin->mNext;
}
return nsnull;
}
static nsresult CreateNPAPIPlugin(nsPluginTag *aPluginTag,
nsNPAPIPlugin **aOutNPAPIPlugin)
{
// If this is an in-process plugin we'll need to load it here if we haven't already.
if (!nsNPAPIPlugin::RunPluginOOP(aPluginTag)) {
if (aPluginTag->mFullPath.IsEmpty())
return NS_ERROR_FAILURE;
nsCOMPtr<nsILocalFile> file = do_CreateInstance("@mozilla.org/file/local;1");
file->InitWithPath(NS_ConvertUTF8toUTF16(aPluginTag->mFullPath));
nsPluginFile pluginFile(file);
PRLibrary* pluginLibrary = NULL;
if (NS_FAILED(pluginFile.LoadPlugin(&pluginLibrary)) || !pluginLibrary)
return NS_ERROR_FAILURE;
aPluginTag->mLibrary = pluginLibrary;
}
nsresult rv;
rv = nsNPAPIPlugin::CreatePlugin(aPluginTag, aOutNPAPIPlugin);
return rv;
}
nsresult nsPluginHost::EnsurePluginLoaded(nsPluginTag* aPluginTag)
{
nsRefPtr<nsNPAPIPlugin> plugin = aPluginTag->mPlugin;
if (!plugin) {
nsresult rv = CreateNPAPIPlugin(aPluginTag, getter_AddRefs(plugin));
if (NS_FAILED(rv)) {
return rv;
}
aPluginTag->mPlugin = plugin;
}
return NS_OK;
}
nsresult nsPluginHost::GetPlugin(const char *aMimeType, nsNPAPIPlugin** aPlugin)
{
nsresult rv = NS_ERROR_FAILURE;
*aPlugin = NULL;
if (!aMimeType)
return NS_ERROR_ILLEGAL_VALUE;
// If plugins haven't been scanned yet, do so now
LoadPlugins();
nsPluginTag* pluginTag = FindPluginForType(aMimeType, true);
if (pluginTag) {
rv = NS_OK;
PLUGIN_LOG(PLUGIN_LOG_BASIC,
("nsPluginHost::GetPlugin Begin mime=%s, plugin=%s\n",
aMimeType, pluginTag->mFileName.get()));
#ifdef NS_DEBUG
if (aMimeType && !pluginTag->mFileName.IsEmpty())
printf("For %s found plugin %s\n", aMimeType, pluginTag->mFileName.get());
#endif
rv = EnsurePluginLoaded(pluginTag);
if (NS_FAILED(rv)) {
return rv;
}
NS_ADDREF(*aPlugin = pluginTag->mPlugin);
return NS_OK;
}
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::GetPlugin End mime=%s, rv=%d, plugin=%p name=%s\n",
aMimeType, rv, *aPlugin,
(pluginTag ? pluginTag->mFileName.get() : "(not found)")));
return rv;
}
// Normalize 'host' to ACE.
nsresult
nsPluginHost::NormalizeHostname(nsCString& host)
{
if (IsASCII(host)) {
ToLowerCase(host);
return NS_OK;
}
if (!mIDNService) {
nsresult rv;
mIDNService = do_GetService(NS_IDNSERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
return mIDNService->ConvertUTF8toACE(host, host);
}
// Enumerate a 'sites' array returned by GetSitesWithData and determine if
// any of them have a base domain in common with 'domain'; if so, append them
// to the 'result' array. If 'firstMatchOnly' is true, return after finding the
// first match.
nsresult
nsPluginHost::EnumerateSiteData(const nsACString& domain,
const nsTArray<nsCString>& sites,
InfallibleTArray<nsCString>& result,
bool firstMatchOnly)
{
NS_ASSERTION(!domain.IsVoid(), "null domain string");
nsresult rv;
if (!mTLDService) {
mTLDService = do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
// Get the base domain from the domain.
nsCString baseDomain;
rv = mTLDService->GetBaseDomainFromHost(domain, 0, baseDomain);
bool isIP = rv == NS_ERROR_HOST_IS_IP_ADDRESS;
if (isIP || rv == NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS) {
// The base domain is the site itself. However, we must be careful to
// normalize.
baseDomain = domain;
rv = NormalizeHostname(baseDomain);
NS_ENSURE_SUCCESS(rv, rv);
} else if (NS_FAILED(rv)) {
return rv;
}
// Enumerate the array of sites with data.
for (PRUint32 i = 0; i < sites.Length(); ++i) {
const nsCString& site = sites[i];
// Check if the site is an IP address.
bool siteIsIP =
site.Length() >= 2 && site.First() == '[' && site.Last() == ']';
if (siteIsIP != isIP)
continue;
nsCString siteBaseDomain;
if (siteIsIP) {
// Strip the '[]'.
siteBaseDomain = Substring(site, 1, site.Length() - 2);
} else {
// Determine the base domain of the site.
rv = mTLDService->GetBaseDomainFromHost(site, 0, siteBaseDomain);
if (rv == NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS) {
// The base domain is the site itself. However, we must be careful to
// normalize.
siteBaseDomain = site;
rv = NormalizeHostname(siteBaseDomain);
NS_ENSURE_SUCCESS(rv, rv);
} else if (NS_FAILED(rv)) {
return rv;
}
}
// At this point, we can do an exact comparison of the two domains.
if (baseDomain != siteBaseDomain) {
continue;
}
// Append the site to the result array.
result.AppendElement(site);
// If we're supposed to return early, do so.
if (firstMatchOnly) {
break;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPluginHost::ClearSiteData(nsIPluginTag* plugin, const nsACString& domain,
PRUint64 flags, PRInt64 maxAge)
{
// maxAge must be either a nonnegative integer or -1.
NS_ENSURE_ARG(maxAge >= 0 || maxAge == -1);
// Caller may give us a tag object that is no longer live.
if (!IsLiveTag(plugin)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsPluginTag* tag = static_cast<nsPluginTag*>(plugin);
// We only ensure support for clearing Flash site data for now.
// We will also attempt to clear data for any plugin that happens
// to be loaded already.
if (!tag->mIsFlashPlugin && !tag->mPlugin) {
return NS_ERROR_FAILURE;
}
// Make sure the plugin is loaded.
nsresult rv = EnsurePluginLoaded(tag);
if (NS_FAILED(rv)) {
return rv;
}
PluginLibrary* library = tag->mPlugin->GetLibrary();
// If 'domain' is the null string, clear everything.
if (domain.IsVoid()) {
return library->NPP_ClearSiteData(NULL, flags, maxAge);
}
// Get the list of sites from the plugin.
InfallibleTArray<nsCString> sites;
rv = library->NPP_GetSitesWithData(sites);
NS_ENSURE_SUCCESS(rv, rv);
// Enumerate the sites and build a list of matches.
InfallibleTArray<nsCString> matches;
rv = EnumerateSiteData(domain, sites, matches, false);
NS_ENSURE_SUCCESS(rv, rv);
// Clear the matches.
for (PRUint32 i = 0; i < matches.Length(); ++i) {
const nsCString& match = matches[i];
rv = library->NPP_ClearSiteData(match.get(), flags, maxAge);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
NS_IMETHODIMP
nsPluginHost::SiteHasData(nsIPluginTag* plugin, const nsACString& domain,
bool* result)
{
// Caller may give us a tag object that is no longer live.
if (!IsLiveTag(plugin)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsPluginTag* tag = static_cast<nsPluginTag*>(plugin);
// We only ensure support for clearing Flash site data for now.
// We will also attempt to clear data for any plugin that happens
// to be loaded already.
if (!tag->mIsFlashPlugin && !tag->mPlugin) {
return NS_ERROR_FAILURE;
}
// Make sure the plugin is loaded.
nsresult rv = EnsurePluginLoaded(tag);
if (NS_FAILED(rv)) {
return rv;
}
PluginLibrary* library = tag->mPlugin->GetLibrary();
// Get the list of sites from the plugin.
InfallibleTArray<nsCString> sites;
rv = library->NPP_GetSitesWithData(sites);
NS_ENSURE_SUCCESS(rv, rv);
// If there's no data, we're done.
if (sites.IsEmpty()) {
*result = false;
return NS_OK;
}
// If 'domain' is the null string, and there's data for at least one site,
// we're done.
if (domain.IsVoid()) {
*result = true;
return NS_OK;
}
// Enumerate the sites and determine if there's a match.
InfallibleTArray<nsCString> matches;
rv = EnumerateSiteData(domain, sites, matches, true);
NS_ENSURE_SUCCESS(rv, rv);
*result = !matches.IsEmpty();
return NS_OK;
}
bool nsPluginHost::IsJavaMIMEType(const char* aType)
{
return aType &&
((0 == PL_strncasecmp(aType, "application/x-java-vm",
sizeof("application/x-java-vm") - 1)) ||
(0 == PL_strncasecmp(aType, "application/x-java-applet",
sizeof("application/x-java-applet") - 1)) ||
(0 == PL_strncasecmp(aType, "application/x-java-bean",
sizeof("application/x-java-bean") - 1)));
}
// Check whether or not a tag is a live, valid tag, and that it's loaded.
bool
nsPluginHost::IsLiveTag(nsIPluginTag* aPluginTag)
{
nsPluginTag* tag;
for (tag = mPlugins; tag; tag = tag->mNext) {
if (tag == aPluginTag) {
return true;
}
}
return false;
}
nsPluginTag * nsPluginHost::HaveSamePlugin(nsPluginTag * aPluginTag)
{
for (nsPluginTag* tag = mPlugins; tag; tag = tag->mNext) {
if (tag->Equals(aPluginTag))
return tag;
}
return nsnull;
}
bool nsPluginHost::IsDuplicatePlugin(nsPluginTag * aPluginTag)
{
nsPluginTag * tag = HaveSamePlugin(aPluginTag);
if (tag) {
// if we got the same plugin, check the full path to see if this is a dup;
// mFileName contains full path on Windows and Unix and leaf name on Mac
// if those are not equal, we have the same plugin with different path,
// i.e. duplicate, return true
if (!tag->mFileName.Equals(aPluginTag->mFileName))
return true;
// if they are equal, compare mFullPath fields just in case
// mFileName contained leaf name only, and if not equal, return true
if (!tag->mFullPath.Equals(aPluginTag->mFullPath))
return true;
}
// we do not have it at all, return false
return false;
}
typedef NS_NPAPIPLUGIN_CALLBACK(char *, NP_GETMIMEDESCRIPTION)(void);
nsresult nsPluginHost::ScanPluginsDirectory(nsIFile *pluginsDir,
bool aCreatePluginList,
bool *aPluginsChanged)
{
NS_ENSURE_ARG_POINTER(aPluginsChanged);
nsresult rv;
*aPluginsChanged = false;
#ifdef PLUGIN_LOGGING
nsCAutoString dirPath;
pluginsDir->GetNativePath(dirPath);
PLUGIN_LOG(PLUGIN_LOG_BASIC,
("nsPluginHost::ScanPluginsDirectory dir=%s\n", dirPath.get()));
#endif
nsCOMPtr<nsISimpleEnumerator> iter;
rv = pluginsDir->GetDirectoryEntries(getter_AddRefs(iter));
if (NS_FAILED(rv))
return rv;
nsAutoTArray<nsCOMPtr<nsILocalFile>, 6> pluginFiles;
bool hasMore;
while (NS_SUCCEEDED(iter->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> supports;
rv = iter->GetNext(getter_AddRefs(supports));
if (NS_FAILED(rv))
continue;
nsCOMPtr<nsILocalFile> dirEntry(do_QueryInterface(supports, &rv));
if (NS_FAILED(rv))
continue;
// Sun's JRE 1.3.1 plugin must have symbolic links resolved or else it'll crash.
// See bug 197855.
dirEntry->Normalize();
if (nsPluginsDir::IsPluginFile(dirEntry)) {
pluginFiles.AppendElement(dirEntry);
}
}
bool warnOutdated = false;
for (PRUint32 i = 0; i < pluginFiles.Length(); i++) {
nsCOMPtr<nsILocalFile>& localfile = pluginFiles[i];
nsString utf16FilePath;
rv = localfile->GetPath(utf16FilePath);
if (NS_FAILED(rv))
continue;
PRInt64 fileModTime = LL_ZERO;
#if defined(XP_MACOSX)
// On OS X the date of a bundle's "contents" (i.e. of its Info.plist file)
// is a much better guide to when it was last modified than the date of
// its package directory. See bug 313700.
nsCOMPtr<nsILocalFileMac> localFileMac = do_QueryInterface(localfile);
if (localFileMac) {
localFileMac->GetBundleContentsLastModifiedTime(&fileModTime);
} else {
localfile->GetLastModifiedTime(&fileModTime);
}
#else
localfile->GetLastModifiedTime(&fileModTime);
#endif
// Look for it in our cache
NS_ConvertUTF16toUTF8 filePath(utf16FilePath);
nsRefPtr<nsPluginTag> pluginTag;
RemoveCachedPluginsInfo(filePath.get(),
getter_AddRefs(pluginTag));
bool enabled = true;
bool seenBefore = false;
if (pluginTag) {
seenBefore = true;
// If plugin changed, delete cachedPluginTag and don't use cache
if (LL_NE(fileModTime, pluginTag->mLastModifiedTime)) {
// Plugins has changed. Don't use cached plugin info.
enabled = (pluginTag->Flags() & NS_PLUGIN_FLAG_ENABLED) != 0;
pluginTag = nsnull;
// plugin file changed, flag this fact
*aPluginsChanged = true;
}
else {
// if it is unwanted plugin we are checking for, get it back to the cache info list
// if this is a duplicate plugin, too place it back in the cache info list marking unwantedness
if (IsDuplicatePlugin(pluginTag)) {
if (!pluginTag->HasFlag(NS_PLUGIN_FLAG_UNWANTED)) {
// Plugin switched from wanted to unwanted
*aPluginsChanged = true;
}
pluginTag->Mark(NS_PLUGIN_FLAG_UNWANTED);
pluginTag->mNext = mCachedPlugins;
mCachedPlugins = pluginTag;
} else if (pluginTag->HasFlag(NS_PLUGIN_FLAG_UNWANTED)) {
pluginTag->UnMark(NS_PLUGIN_FLAG_UNWANTED);
// Plugin switched from unwanted to wanted
*aPluginsChanged = true;
}
}
// If we're not creating a list and we already know something changed then
// we're done.
if (!aCreatePluginList) {
if (*aPluginsChanged) {
return NS_OK;
}
continue;
}
}
bool isKnownInvalidPlugin = false;
for (nsRefPtr<nsInvalidPluginTag> invalidPlugins = mInvalidPlugins;
invalidPlugins; invalidPlugins = invalidPlugins->mNext) {
// If already marked as invalid, ignore it
if (invalidPlugins->mFullPath.Equals(filePath.get()) &&
invalidPlugins->mLastModifiedTime == fileModTime) {
if (aCreatePluginList) {
invalidPlugins->mSeen = true;
}
isKnownInvalidPlugin = true;
break;
}
}
if (isKnownInvalidPlugin) {
continue;
}
// if it is not found in cache info list or has been changed, create a new one
if (!pluginTag) {
nsPluginFile pluginFile(localfile);
// create a tag describing this plugin.
PRLibrary *library = nsnull;
nsPluginInfo info;
memset(&info, 0, sizeof(info));
nsresult res = pluginFile.GetPluginInfo(info, &library);
// if we don't have mime type don't proceed, this is not a plugin
if (NS_FAILED(res) || !info.fMimeTypeArray) {
nsRefPtr<nsInvalidPluginTag> invalidTag = new nsInvalidPluginTag(filePath.get(),
fileModTime);
pluginFile.FreePluginInfo(info);
if (aCreatePluginList) {
invalidTag->mSeen = true;
}
invalidTag->mNext = mInvalidPlugins;
if (mInvalidPlugins) {
mInvalidPlugins->mPrev = invalidTag;
}
mInvalidPlugins = invalidTag;
// Mark aPluginsChanged so pluginreg is rewritten
*aPluginsChanged = true;
continue;
}
pluginTag = new nsPluginTag(&info);
pluginFile.FreePluginInfo(info);
if (!pluginTag)
return NS_ERROR_OUT_OF_MEMORY;
pluginTag->mLibrary = library;
pluginTag->mLastModifiedTime = fileModTime;
nsCOMPtr<nsIBlocklistService> blocklist = do_GetService("@mozilla.org/extensions/blocklist;1");
if (blocklist) {
PRUint32 state;
rv = blocklist->GetPluginBlocklistState(pluginTag, EmptyString(),
EmptyString(), &state);
if (NS_SUCCEEDED(rv)) {
// If the blocklist says so then block the plugin. If the blocklist says
// it is risky and we have never seen this plugin before then disable it
if (state == nsIBlocklistService::STATE_BLOCKED)
pluginTag->Mark(NS_PLUGIN_FLAG_BLOCKLISTED);
else if (state == nsIBlocklistService::STATE_SOFTBLOCKED && !seenBefore)
enabled = false;
else if (state == nsIBlocklistService::STATE_OUTDATED && !seenBefore)
warnOutdated = true;
}
}
if (!enabled)
pluginTag->UnMark(NS_PLUGIN_FLAG_ENABLED);
// if this is unwanted plugin we are checkin for, or this is a duplicate plugin,
// add it to our cache info list so we can cache the unwantedness of this plugin
// when we sync cached plugins to registry
NS_ASSERTION(!pluginTag->HasFlag(NS_PLUGIN_FLAG_UNWANTED),
"Brand-new tags should not be unwanted");
if (IsDuplicatePlugin(pluginTag)) {
pluginTag->Mark(NS_PLUGIN_FLAG_UNWANTED);
pluginTag->mNext = mCachedPlugins;
mCachedPlugins = pluginTag;
}
// Plugin unloading is tag-based. If we created a new tag and loaded
// the library in the process then we want to attempt to unload it here.
// Only do this if the pref is set for aggressive unloading.
if (UnloadPluginsASAP()) {
pluginTag->TryUnloadPlugin(false);
}
}
// set the flag that we want to add this plugin to the list for now
// and see if it remains after we check several reasons not to do so
bool bAddIt = true;
if (HaveSamePlugin(pluginTag)) {
// we cannot get here if the plugin has just been added
// and thus |pluginTag| is not from cache, because otherwise
// it would not be present in the list;
bAddIt = false;
}
// do it if we still want it
if (bAddIt) {
if (!seenBefore) {
// We have a valid new plugin so report that plugins have changed.
*aPluginsChanged = true;
}
// If we're not creating a plugin list, simply looking for changes,
// then we're done.
if (!aCreatePluginList) {
return NS_OK;
}
pluginTag->SetHost(this);
// Add plugin tags such that the list is ordered by modification date,
// newest to oldest. This is ugly, it'd be easier with just about anything
// other than a single-directional linked list.
if (mPlugins) {
nsPluginTag *prev = nsnull;
nsPluginTag *next = mPlugins;
while (next) {
if (pluginTag->mLastModifiedTime >= next->mLastModifiedTime) {
pluginTag->mNext = next;
if (prev) {
prev->mNext = pluginTag;
} else {
mPlugins = pluginTag;
}
break;
}
prev = next;
next = prev->mNext;
if (!next) {
prev->mNext = pluginTag;
}
}
} else {
mPlugins = pluginTag;
}
if (pluginTag->IsEnabled()) {
pluginTag->RegisterWithCategoryManager(mOverrideInternalTypes);
}
}
}
if (warnOutdated) {
Preferences::SetBool("plugins.update.notifyUser", true);
}
return NS_OK;
}
nsresult nsPluginHost::ScanPluginsDirectoryList(nsISimpleEnumerator *dirEnum,
bool aCreatePluginList,
bool *aPluginsChanged)
{
bool hasMore;
while (NS_SUCCEEDED(dirEnum->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> supports;
nsresult rv = dirEnum->GetNext(getter_AddRefs(supports));
if (NS_FAILED(rv))
continue;
nsCOMPtr<nsIFile> nextDir(do_QueryInterface(supports, &rv));
if (NS_FAILED(rv))
continue;
// don't pass aPluginsChanged directly to prevent it from been reset
bool pluginschanged = false;
ScanPluginsDirectory(nextDir, aCreatePluginList, &pluginschanged);
if (pluginschanged)
*aPluginsChanged = true;
// if changes are detected and we are not creating the list, do not proceed
if (!aCreatePluginList && *aPluginsChanged)
break;
}
return NS_OK;
}
nsresult nsPluginHost::LoadPlugins()
{
#ifdef ANDROID
if (XRE_GetProcessType() == GeckoProcessType_Content) {
return NS_OK;
}
#endif
// do not do anything if it is already done
// use ReloadPlugins() to enforce loading
if (mPluginsLoaded)
return NS_OK;
if (mPluginsDisabled)
return NS_OK;
bool pluginschanged;
nsresult rv = FindPlugins(true, &pluginschanged);
if (NS_FAILED(rv))
return rv;
// only if plugins have changed will we notify plugin-change observers
if (pluginschanged) {
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
if (obsService)
obsService->NotifyObservers(nsnull, "plugins-list-updated", nsnull);
}
return NS_OK;
}
// if aCreatePluginList is false we will just scan for plugins
// and see if any changes have been made to the plugins.
// This is needed in ReloadPlugins to prevent possible recursive reloads
nsresult nsPluginHost::FindPlugins(bool aCreatePluginList, bool * aPluginsChanged)
{
Telemetry::AutoTimer<Telemetry::FIND_PLUGINS> telemetry;
#ifdef CALL_SAFETY_ON
// check preferences on whether or not we want to try safe calls to plugins
NS_INIT_PLUGIN_SAFE_CALLS;
#endif
NS_ENSURE_ARG_POINTER(aPluginsChanged);
*aPluginsChanged = false;
nsresult rv;
// Read cached plugins info. If the profile isn't yet available then don't
// scan for plugins
if (ReadPluginInfo() == NS_ERROR_NOT_AVAILABLE)
return NS_OK;
#ifdef XP_WIN
// Failure here is not a show-stopper so just warn.
rv = EnsurePrivateDirServiceProvider();
NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to register dir service provider.");
#endif /* XP_WIN */
nsCOMPtr<nsIProperties> dirService(do_GetService(kDirectoryServiceContractID, &rv));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsISimpleEnumerator> dirList;
// Scan plugins directories;
// don't pass aPluginsChanged directly, to prevent its
// possible reset in subsequent ScanPluginsDirectory calls
bool pluginschanged = false;
// Scan the app-defined list of plugin dirs.
rv = dirService->Get(NS_APP_PLUGINS_DIR_LIST, NS_GET_IID(nsISimpleEnumerator), getter_AddRefs(dirList));
if (NS_SUCCEEDED(rv)) {
ScanPluginsDirectoryList(dirList, aCreatePluginList, &pluginschanged);
if (pluginschanged)
*aPluginsChanged = true;
// if we are just looking for possible changes,
// no need to proceed if changes are detected
if (!aCreatePluginList && *aPluginsChanged) {
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
return NS_OK;
}
} else {
#ifdef ANDROID
LOG("getting plugins dir failed");
#endif
}
mPluginsLoaded = true; // at this point 'some' plugins have been loaded,
// the rest is optional
#ifdef XP_WIN
bool bScanPLIDs = Preferences::GetBool("plugin.scan.plid.all", false);
// Now lets scan any PLID directories
if (bScanPLIDs && mPrivateDirServiceProvider) {
rv = mPrivateDirServiceProvider->GetPLIDDirectories(getter_AddRefs(dirList));
if (NS_SUCCEEDED(rv)) {
ScanPluginsDirectoryList(dirList, aCreatePluginList, &pluginschanged);
if (pluginschanged)
*aPluginsChanged = true;
// if we are just looking for possible changes,
// no need to proceed if changes are detected
if (!aCreatePluginList && *aPluginsChanged) {
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
return NS_OK;
}
}
}
// Scan the installation paths of our popular plugins if the prefs are enabled
// This table controls the order of scanning
const char* const prefs[] = {NS_WIN_JRE_SCAN_KEY,
NS_WIN_ACROBAT_SCAN_KEY,
NS_WIN_QUICKTIME_SCAN_KEY,
NS_WIN_WMP_SCAN_KEY};
PRUint32 size = sizeof(prefs) / sizeof(prefs[0]);
for (PRUint32 i = 0; i < size; i+=1) {
nsCOMPtr<nsIFile> dirToScan;
bool bExists;
if (NS_SUCCEEDED(dirService->Get(prefs[i], NS_GET_IID(nsIFile), getter_AddRefs(dirToScan))) &&
dirToScan &&
NS_SUCCEEDED(dirToScan->Exists(&bExists)) &&
bExists) {
ScanPluginsDirectory(dirToScan, aCreatePluginList, &pluginschanged);
if (pluginschanged)
*aPluginsChanged = true;
// if we are just looking for possible changes,
// no need to proceed if changes are detected
if (!aCreatePluginList && *aPluginsChanged) {
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
return NS_OK;
}
}
}
#endif
// if get to this point and did not detect changes in plugins
// that means no plugins got updated or added
// let's see if plugins have been removed
if (!*aPluginsChanged) {
// count plugins remained in cache, if there are some, that means some plugins were removed;
// while counting, we should ignore unwanted plugins which are also present in cache
PRUint32 cachecount = 0;
for (nsPluginTag * cachetag = mCachedPlugins; cachetag; cachetag = cachetag->mNext) {
if (!cachetag->HasFlag(NS_PLUGIN_FLAG_UNWANTED))
cachecount++;
}
// if there is something left in cache, some plugins got removed from the directory
// and therefor their info did not get removed from the cache info list during directory scan;
// flag this fact
if (cachecount > 0)
*aPluginsChanged = true;
}
// Remove unseen invalid plugins
nsRefPtr<nsInvalidPluginTag> invalidPlugins = mInvalidPlugins;
while (invalidPlugins) {
if (!invalidPlugins->mSeen) {
nsRefPtr<nsInvalidPluginTag> invalidPlugin = invalidPlugins;
if (invalidPlugin->mPrev) {
invalidPlugin->mPrev->mNext = invalidPlugin->mNext;
}
else {
mInvalidPlugins = invalidPlugin->mNext;
}
if (invalidPlugin->mNext) {
invalidPlugin->mNext->mPrev = invalidPlugin->mPrev;
}
invalidPlugins = invalidPlugin->mNext;
invalidPlugin->mPrev = NULL;
invalidPlugin->mNext = NULL;
}
else {
invalidPlugins->mSeen = false;
invalidPlugins = invalidPlugins->mNext;
}
}
// if we are not creating the list, there is no need to proceed
if (!aCreatePluginList) {
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
return NS_OK;
}
// if we are creating the list, it is already done;
// update the plugins info cache if changes are detected
if (*aPluginsChanged)
WritePluginInfo();
// No more need for cached plugins. Clear it up.
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
return NS_OK;
}
nsresult
nsPluginHost::UpdatePluginInfo(nsPluginTag* aPluginTag)
{
ReadPluginInfo();
WritePluginInfo();
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsPluginTag>, mCachedPlugins, mNext);
NS_ITERATIVE_UNREF_LIST(nsRefPtr<nsInvalidPluginTag>, mInvalidPlugins, mNext);
if (!aPluginTag || aPluginTag->IsEnabled())
return NS_OK;
nsCOMPtr<nsISupportsArray> instsToReload;
NS_NewISupportsArray(getter_AddRefs(instsToReload));
DestroyRunningInstances(instsToReload, aPluginTag);
PRUint32 c;
if (instsToReload && NS_SUCCEEDED(instsToReload->Count(&c)) && c > 0) {
nsCOMPtr<nsIRunnable> ev = new nsPluginDocReframeEvent(instsToReload);
if (ev)
NS_DispatchToCurrentThread(ev);
}
return NS_OK;
}
nsresult
nsPluginHost::WritePluginInfo()
{
nsresult rv = NS_OK;
nsCOMPtr<nsIProperties> directoryService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID,&rv));
if (NS_FAILED(rv))
return rv;
directoryService->Get(NS_APP_USER_PROFILE_50_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(mPluginRegFile));
if (!mPluginRegFile)
return NS_ERROR_FAILURE;
PRFileDesc* fd = nsnull;
nsCOMPtr<nsIFile> pluginReg;
rv = mPluginRegFile->Clone(getter_AddRefs(pluginReg));
if (NS_FAILED(rv))
return rv;
nsCAutoString filename(kPluginRegistryFilename);
filename.Append(".tmp");
rv = pluginReg->AppendNative(filename);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(pluginReg, &rv);
if (NS_FAILED(rv))
return rv;
rv = localFile->OpenNSPRFileDesc(PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE, 0600, &fd);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIXULRuntime> runtime = do_GetService("@mozilla.org/xre/runtime;1");
if (!runtime) {
return NS_ERROR_FAILURE;
}
nsCAutoString arch;
rv = runtime->GetXPCOMABI(arch);
if (NS_FAILED(rv)) {
return rv;
}
PR_fprintf(fd, "Generated File. Do not edit.\n");
PR_fprintf(fd, "\n[HEADER]\nVersion%c%s%c%c\nArch%c%s%c%c\n",
PLUGIN_REGISTRY_FIELD_DELIMITER,
kPluginRegistryVersion,
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER,
PLUGIN_REGISTRY_FIELD_DELIMITER,
arch.get(),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
// Store all plugins in the mPlugins list - all plugins currently in use.
PR_fprintf(fd, "\n[PLUGINS]\n");
nsPluginTag *taglist[] = {mPlugins, mCachedPlugins};
for (int i=0; i<(int)(sizeof(taglist)/sizeof(nsPluginTag *)); i++) {
for (nsPluginTag *tag = taglist[i]; tag; tag=tag->mNext) {
// from mCachedPlugins list write down only unwanted plugins
if ((taglist[i] == mCachedPlugins) && !tag->HasFlag(NS_PLUGIN_FLAG_UNWANTED))
continue;
// store each plugin info into the registry
// filename & fullpath are on separate line
// because they can contain field delimiter char
PR_fprintf(fd, "%s%c%c\n%s%c%c\n%s%c%c\n",
(tag->mFileName.get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER,
(tag->mFullPath.get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER,
(tag->mVersion.get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
// lastModifiedTimeStamp|canUnload|tag->mFlags
PR_fprintf(fd, "%lld%c%d%c%lu%c%c\n",
tag->mLastModifiedTime,
PLUGIN_REGISTRY_FIELD_DELIMITER,
false, // did store whether or not to unload in-process plugins
PLUGIN_REGISTRY_FIELD_DELIMITER,
tag->Flags(),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
//description, name & mtypecount are on separate line
PR_fprintf(fd, "%s%c%c\n%s%c%c\n%d\n",
(tag->mDescription.get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER,
(tag->mName.get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER,
tag->mMimeTypes.Length() + (tag->mIsNPRuntimeEnabledJavaPlugin ? 1 : 0));
// Add in each mimetype this plugin supports
for (PRUint32 i = 0; i < tag->mMimeTypes.Length(); i++) {
PR_fprintf(fd, "%d%c%s%c%s%c%s%c%c\n",
i,PLUGIN_REGISTRY_FIELD_DELIMITER,
(tag->mMimeTypes[i].get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
(tag->mMimeDescriptions[i].get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
(tag->mExtensions[i].get()),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
}
if (tag->mIsNPRuntimeEnabledJavaPlugin) {
PR_fprintf(fd, "%d%c%s%c%s%c%s%c%c\n",
tag->mMimeTypes.Length(), PLUGIN_REGISTRY_FIELD_DELIMITER,
"application/x-java-vm-npruntime",
PLUGIN_REGISTRY_FIELD_DELIMITER,
"",
PLUGIN_REGISTRY_FIELD_DELIMITER,
"",
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
}
}
}
PR_fprintf(fd, "\n[INVALID]\n");
nsRefPtr<nsInvalidPluginTag> invalidPlugins = mInvalidPlugins;
while (invalidPlugins) {
// fullPath
PR_fprintf(fd, "%s%c%c\n",
(!invalidPlugins->mFullPath.IsEmpty() ? invalidPlugins->mFullPath.get() : ""),
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
// lastModifiedTimeStamp
PR_fprintf(fd, "%lld%c%c\n",
invalidPlugins->mLastModifiedTime,
PLUGIN_REGISTRY_FIELD_DELIMITER,
PLUGIN_REGISTRY_END_OF_LINE_MARKER);
invalidPlugins = invalidPlugins->mNext;
}
PR_Close(fd);
nsCOMPtr<nsIFile> parent;
rv = localFile->GetParent(getter_AddRefs(parent));
NS_ENSURE_SUCCESS(rv, rv);
rv = localFile->MoveToNative(parent, kPluginRegistryFilename);
return rv;
}
#define PLUGIN_REG_MIMETYPES_ARRAY_SIZE 12
nsresult
nsPluginHost::ReadPluginInfo()
{
nsresult rv;
nsCOMPtr<nsIProperties> directoryService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID,&rv));
if (NS_FAILED(rv))
return rv;
directoryService->Get(NS_APP_USER_PROFILE_50_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(mPluginRegFile));
if (!mPluginRegFile) {
// There is no profile yet, this will tell us if there is going to be one
// in the future.
directoryService->Get(NS_APP_PROFILE_DIR_STARTUP, NS_GET_IID(nsIFile),
getter_AddRefs(mPluginRegFile));
if (!mPluginRegFile)
return NS_ERROR_FAILURE;
else
return NS_ERROR_NOT_AVAILABLE;
}
PRFileDesc* fd = nsnull;
nsCOMPtr<nsIFile> pluginReg;
rv = mPluginRegFile->Clone(getter_AddRefs(pluginReg));
if (NS_FAILED(rv))
return rv;
rv = pluginReg->AppendNative(kPluginRegistryFilename);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(pluginReg, &rv);
if (NS_FAILED(rv))
return rv;
PRInt64 fileSize;
rv = localFile->GetFileSize(&fileSize);
if (NS_FAILED(rv))
return rv;
PRInt32 flen = PRInt64(fileSize);
if (flen == 0) {
NS_WARNING("Plugins Registry Empty!");
return NS_OK; // ERROR CONDITION
}
nsPluginManifestLineReader reader;
char* registry = reader.Init(flen);
if (!registry)
return NS_ERROR_OUT_OF_MEMORY;
rv = localFile->OpenNSPRFileDesc(PR_RDONLY, 0444, &fd);
if (NS_FAILED(rv))
return rv;
// set rv to return an error on goto out
rv = NS_ERROR_FAILURE;
PRInt32 bread = PR_Read(fd, registry, flen);
PR_Close(fd);
if (flen > bread)
return rv;
if (!ReadSectionHeader(reader, "HEADER"))
return rv;;
if (!reader.NextLine())
return rv;
char* values[6];
// VersionLiteral, kPluginRegistryVersion
if (2 != reader.ParseLine(values, 2))
return rv;
// VersionLiteral
if (PL_strcmp(values[0], "Version"))
return rv;
// kPluginRegistryVersion
PRInt32 vdiff = mozilla::CompareVersions(values[1], kPluginRegistryVersion);
mozilla::Version version(values[1]);
// If this is a registry from some future version then don't attempt to read it
if (vdiff > 0)
return rv;
// If this is a registry from before the minimum then don't attempt to read it
if (version < kMinimumRegistryVersion)
return rv;
// Registry v0.10 and upwards includes the plugin version field
bool regHasVersion = (version >= "0.10");
// Registry v0.13 and upwards includes the architecture
if (version >= "0.13") {
char* archValues[6];
if (!reader.NextLine()) {
return rv;
}
// ArchLiteral, Architecture
if (2 != reader.ParseLine(archValues, 2)) {
return rv;
}
// ArchLiteral
if (PL_strcmp(archValues[0], "Arch")) {
return rv;
}
nsCOMPtr<nsIXULRuntime> runtime = do_GetService("@mozilla.org/xre/runtime;1");
if (!runtime) {
return rv;
}
nsCAutoString arch;
if (NS_FAILED(runtime->GetXPCOMABI(arch))) {
return rv;
}
// If this is a registry from a different architecture then don't attempt to read it
if (PL_strcmp(archValues[1], arch.get())) {
return rv;
}
}
// Registry v0.13 and upwards includes the list of invalid plugins
bool hasInvalidPlugins = (version >= "0.13");
if (!ReadSectionHeader(reader, "PLUGINS"))
return rv;
#if defined(XP_MACOSX)
bool hasFullPathInFileNameField = false;
#else
bool hasFullPathInFileNameField = (version < "0.11");
#endif
while (reader.NextLine()) {
const char *filename;
const char *fullpath;
nsCAutoString derivedFileName;
if (hasInvalidPlugins && *reader.LinePtr() == '[') {
break;
}
if (hasFullPathInFileNameField) {
fullpath = reader.LinePtr();
if (!reader.NextLine())
return rv;
// try to derive a file name from the full path
if (fullpath) {
nsCOMPtr<nsILocalFile> file = do_CreateInstance("@mozilla.org/file/local;1");
file->InitWithNativePath(nsDependentCString(fullpath));
file->GetNativeLeafName(derivedFileName);
filename = derivedFileName.get();
} else {
filename = NULL;
}
// skip the next line, useless in this version
if (!reader.NextLine())
return rv;
} else {
filename = reader.LinePtr();
if (!reader.NextLine())
return rv;
fullpath = reader.LinePtr();
if (!reader.NextLine())
return rv;
}
const char *version;
if (regHasVersion) {
version = reader.LinePtr();
if (!reader.NextLine())
return rv;
} else {
version = "0";
}
// lastModifiedTimeStamp|canUnload|tag.mFlag
if (reader.ParseLine(values, 3) != 3)
return rv;
// If this is an old plugin registry mark this plugin tag to be refreshed
PRInt64 lastmod = (vdiff == 0) ? nsCRT::atoll(values[0]) : -1;
PRUint32 tagflag = atoi(values[2]);
if (!reader.NextLine())
return rv;
const char *description = reader.LinePtr();
if (!reader.NextLine())
return rv;
const char *name = reader.LinePtr();
if (!reader.NextLine())
return rv;
int mimetypecount = atoi(reader.LinePtr());
char *stackalloced[PLUGIN_REG_MIMETYPES_ARRAY_SIZE * 3];
char **mimetypes;
char **mimedescriptions;
char **extensions;
char **heapalloced = 0;
if (mimetypecount > PLUGIN_REG_MIMETYPES_ARRAY_SIZE - 1) {
heapalloced = new char *[mimetypecount * 3];
mimetypes = heapalloced;
} else {
mimetypes = stackalloced;
}
mimedescriptions = mimetypes + mimetypecount;
extensions = mimedescriptions + mimetypecount;
int mtr = 0; //mimetype read
for (; mtr < mimetypecount; mtr++) {
if (!reader.NextLine())
break;
//line number|mimetype|description|extension
if (4 != reader.ParseLine(values, 4))
break;
int line = atoi(values[0]);
if (line != mtr)
break;
mimetypes[mtr] = values[1];
mimedescriptions[mtr] = values[2];
extensions[mtr] = values[3];
}
if (mtr != mimetypecount) {
if (heapalloced) {
delete [] heapalloced;
}
return rv;
}
nsRefPtr<nsPluginTag> tag = new nsPluginTag(name,
description,
filename,
fullpath,
version,
(const char* const*)mimetypes,
(const char* const*)mimedescriptions,
(const char* const*)extensions,
mimetypecount, lastmod, true);
if (heapalloced)
delete [] heapalloced;
if (!tag)
continue;
// Mark plugin as loaded from cache
tag->Mark(tagflag | NS_PLUGIN_FLAG_FROMCACHE);
PR_LOG(nsPluginLogging::gPluginLog, PLUGIN_LOG_BASIC,
("LoadCachedPluginsInfo : Loading Cached plugininfo for %s\n", tag->mFileName.get()));
tag->mNext = mCachedPlugins;
mCachedPlugins = tag;
}
if (hasInvalidPlugins) {
if (!ReadSectionHeader(reader, "INVALID")) {
return rv;
}
while (reader.NextLine()) {
const char *fullpath = reader.LinePtr();
if (!reader.NextLine()) {
return rv;
}
const char *lastModifiedTimeStamp = reader.LinePtr();
PRInt64 lastmod = (vdiff == 0) ? nsCRT::atoll(lastModifiedTimeStamp) : -1;
nsRefPtr<nsInvalidPluginTag> invalidTag = new nsInvalidPluginTag(fullpath, lastmod);
invalidTag->mNext = mInvalidPlugins;
if (mInvalidPlugins) {
mInvalidPlugins->mPrev = invalidTag;
}
mInvalidPlugins = invalidTag;
}
}
return NS_OK;
}
void
nsPluginHost::RemoveCachedPluginsInfo(const char *filePath, nsPluginTag **result)
{
nsRefPtr<nsPluginTag> prev;
nsRefPtr<nsPluginTag> tag = mCachedPlugins;
while (tag)
{
if (tag->mFullPath.Equals(filePath)) {
// Found it. Remove it from our list
if (prev)
prev->mNext = tag->mNext;
else
mCachedPlugins = tag->mNext;
tag->mNext = nsnull;
*result = tag;
NS_ADDREF(*result);
break;
}
prev = tag;
tag = tag->mNext;
}
}
#ifdef XP_WIN
nsresult
nsPluginHost::EnsurePrivateDirServiceProvider()
{
if (!mPrivateDirServiceProvider) {
nsresult rv;
mPrivateDirServiceProvider = new nsPluginDirServiceProvider();
if (!mPrivateDirServiceProvider)
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsIDirectoryService> dirService(do_GetService(kDirectoryServiceContractID, &rv));
if (NS_FAILED(rv))
return rv;
rv = dirService->RegisterProvider(mPrivateDirServiceProvider);
if (NS_FAILED(rv))
return rv;
}
return NS_OK;
}
#endif /* XP_WIN */
nsresult nsPluginHost::NewPluginURLStream(const nsString& aURL,
nsNPAPIPluginInstance *aInstance,
nsIPluginStreamListener* aListener,
nsIInputStream *aPostStream,
const char *aHeadersData,
PRUint32 aHeadersDataLen)
{
nsCOMPtr<nsIURI> url;
nsAutoString absUrl;
nsresult rv;
if (aURL.Length() <= 0)
return NS_OK;
// get the full URL of the document that the plugin is embedded
// in to create an absolute url in case aURL is relative
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsIPluginInstanceOwner> owner;
aInstance->GetOwner(getter_AddRefs(owner));
if (owner) {
rv = owner->GetDocument(getter_AddRefs(doc));
if (NS_SUCCEEDED(rv) && doc) {
// Create an absolute URL
rv = NS_MakeAbsoluteURI(absUrl, aURL, doc->GetDocBaseURI());
}
}
if (absUrl.IsEmpty())
absUrl.Assign(aURL);
rv = NS_NewURI(getter_AddRefs(url), absUrl);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIPluginTagInfo> pti = do_QueryInterface(owner);
nsCOMPtr<nsIDOMElement> element;
if (pti)
pti->GetDOMElement(getter_AddRefs(element));
PRInt16 shouldLoad = nsIContentPolicy::ACCEPT;
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_OBJECT_SUBREQUEST,
url,
(doc ? doc->NodePrincipal() : nsnull),
element,
EmptyCString(), //mime guess
nsnull, //extra
&shouldLoad);
if (NS_FAILED(rv))
return rv;
if (NS_CP_REJECTED(shouldLoad)) {
// Disallowed by content policy
return NS_ERROR_CONTENT_BLOCKED;
}
nsRefPtr<nsPluginStreamListenerPeer> listenerPeer = new nsPluginStreamListenerPeer();
if (!listenerPeer)
return NS_ERROR_OUT_OF_MEMORY;
rv = listenerPeer->Initialize(url, aInstance, aListener);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), url, nsnull,
nsnull, /* do not add this internal plugin's channel
on the load group otherwise this channel could be canceled
form |nsDocShell::OnLinkClickSync| bug 166613 */
listenerPeer);
if (NS_FAILED(rv))
return rv;
if (doc) {
// Set the owner of channel to the document principal...
channel->SetOwner(doc->NodePrincipal());
// And if it's a script allow it to execute against the
// document's script context.
nsCOMPtr<nsIScriptChannel> scriptChannel(do_QueryInterface(channel));
if (scriptChannel) {
scriptChannel->SetExecutionPolicy(nsIScriptChannel::EXECUTE_NORMAL);
// Plug-ins seem to depend on javascript: URIs running synchronously
scriptChannel->SetExecuteAsync(false);
}
}
// deal with headers and post data
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
if (httpChannel) {
if (!aPostStream) {
// Only set the Referer header for GET requests because IIS throws
// errors about malformed requests if we include it in POSTs. See
// bug 724465.
nsCOMPtr<nsIURI> referer;
nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(element);
if (olc)
olc->GetSrcURI(getter_AddRefs(referer));
if (!referer)
referer = doc->GetDocumentURI();
rv = httpChannel->SetReferrer(referer);
NS_ENSURE_SUCCESS(rv,rv);
}
if (aPostStream) {
// XXX it's a bit of a hack to rewind the postdata stream
// here but it has to be done in case the post data is
// being reused multiple times.
nsCOMPtr<nsISeekableStream>
postDataSeekable(do_QueryInterface(aPostStream));
if (postDataSeekable)
postDataSeekable->Seek(nsISeekableStream::NS_SEEK_SET, 0);
nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(httpChannel));
NS_ASSERTION(uploadChannel, "http must support nsIUploadChannel");
uploadChannel->SetUploadStream(aPostStream, EmptyCString(), -1);
}
if (aHeadersData) {
rv = AddHeadersToChannel(aHeadersData, aHeadersDataLen, httpChannel);
NS_ENSURE_SUCCESS(rv,rv);
}
}
rv = channel->AsyncOpen(listenerPeer, nsnull);
if (NS_SUCCEEDED(rv))
listenerPeer->TrackRequest(channel);
return rv;
}
// Called by GetURL and PostURL
nsresult
nsPluginHost::DoURLLoadSecurityCheck(nsNPAPIPluginInstance *aInstance,
const char* aURL)
{
if (!aURL || *aURL == '\0')
return NS_OK;
// get the URL of the document that loaded the plugin
nsCOMPtr<nsIPluginInstanceOwner> owner;
aInstance->GetOwner(getter_AddRefs(owner));
if (!owner)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDocument> doc;
owner->GetDocument(getter_AddRefs(doc));
if (!doc)
return NS_ERROR_FAILURE;
// Create an absolute URL for the target in case the target is relative
nsCOMPtr<nsIURI> targetURL;
NS_NewURI(getter_AddRefs(targetURL), aURL, doc->GetDocBaseURI());
if (!targetURL)
return NS_ERROR_FAILURE;
nsresult rv;
nsCOMPtr<nsIScriptSecurityManager> secMan(
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
if (NS_FAILED(rv))
return rv;
return secMan->CheckLoadURIWithPrincipal(doc->NodePrincipal(), targetURL,
nsIScriptSecurityManager::STANDARD);
}
nsresult
nsPluginHost::AddHeadersToChannel(const char *aHeadersData,
PRUint32 aHeadersDataLen,
nsIChannel *aGenericChannel)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIHttpChannel> aChannel = do_QueryInterface(aGenericChannel);
if (!aChannel) {
return NS_ERROR_NULL_POINTER;
}
// used during the manipulation of the String from the aHeadersData
nsCAutoString headersString;
nsCAutoString oneHeader;
nsCAutoString headerName;
nsCAutoString headerValue;
PRInt32 crlf = 0;
PRInt32 colon = 0;
// Turn the char * buffer into an nsString.
headersString = aHeadersData;
// Iterate over the nsString: for each "\r\n" delimited chunk,
// add the value as a header to the nsIHTTPChannel
while (true) {
crlf = headersString.Find("\r\n", true);
if (-1 == crlf) {
rv = NS_OK;
return rv;
}
headersString.Mid(oneHeader, 0, crlf);
headersString.Cut(0, crlf + 2);
oneHeader.StripWhitespace();
colon = oneHeader.Find(":");
if (-1 == colon) {
rv = NS_ERROR_NULL_POINTER;
return rv;
}
oneHeader.Left(headerName, colon);
colon++;
oneHeader.Mid(headerValue, colon, oneHeader.Length() - colon);
// FINALLY: we can set the header!
rv = aChannel->SetRequestHeader(headerName, headerValue, true);
if (NS_FAILED(rv)) {
rv = NS_ERROR_NULL_POINTER;
return rv;
}
}
return rv;
}
nsresult
nsPluginHost::StopPluginInstance(nsNPAPIPluginInstance* aInstance)
{
if (PluginDestructionGuard::DelayDestroy(aInstance)) {
return NS_OK;
}
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("nsPluginHost::StopPluginInstance called instance=%p\n",aInstance));
if (aInstance->HasStartedDestroying()) {
return NS_OK;
}
Telemetry::AutoTimer<Telemetry::PLUGIN_SHUTDOWN_MS> timer;
aInstance->Stop();
// if the instance does not want to be 'cached' just remove it
bool doCache = aInstance->ShouldCache();
if (doCache) {
// try to get the max cached instances from a pref or use default
PRUint32 cachedInstanceLimit =
Preferences::GetUint(NS_PREF_MAX_NUM_CACHED_INSTANCES,
DEFAULT_NUMBER_OF_STOPPED_INSTANCES);
if (StoppedInstanceCount() >= cachedInstanceLimit) {
nsNPAPIPluginInstance *oldestInstance = FindOldestStoppedInstance();
if (oldestInstance) {
nsPluginTag* pluginTag = TagForPlugin(oldestInstance->GetPlugin());
oldestInstance->Destroy();
mInstances.RemoveElement(oldestInstance);
OnPluginInstanceDestroyed(pluginTag);
}
}
} else {
nsPluginTag* pluginTag = TagForPlugin(aInstance->GetPlugin());
aInstance->Destroy();
mInstances.RemoveElement(aInstance);
OnPluginInstanceDestroyed(pluginTag);
}
return NS_OK;
}
nsresult nsPluginHost::NewEmbeddedPluginStreamListener(nsIURI* aURI,
nsObjectLoadingContent *aContent,
nsNPAPIPluginInstance* aInstance,
nsIStreamListener **aStreamListener)
{
NS_ENSURE_ARG_POINTER(aURI);
NS_ENSURE_ARG_POINTER(aStreamListener);
nsRefPtr<nsPluginStreamListenerPeer> listener = new nsPluginStreamListenerPeer();
nsresult rv = listener->InitializeEmbedded(aURI, aInstance, aContent);
if (NS_FAILED(rv)) {
return rv;
}
listener.forget(aStreamListener);
return NS_OK;
}
nsresult nsPluginHost::NewEmbeddedPluginStream(nsIURI* aURL,
nsObjectLoadingContent *aContent,
nsNPAPIPluginInstance* aInstance)
{
nsCOMPtr<nsIStreamListener> listener;
nsresult rv = NewEmbeddedPluginStreamListener(aURL, aContent, aInstance,
getter_AddRefs(listener));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsILoadGroup> loadGroup;
if (aContent) {
nsCOMPtr<nsIContent> aIContent = do_QueryInterface(static_cast<nsIImageLoadingContent*>(aContent));
doc = aIContent->GetDocument();
if (doc) {
loadGroup = doc->GetDocumentLoadGroup();
}
}
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), aURL, nsnull, loadGroup, nsnull);
if (NS_SUCCEEDED(rv)) {
// if this is http channel, set referrer, some servers are configured
// to reject requests without referrer set, see bug 157796
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
if (httpChannel && doc)
httpChannel->SetReferrer(doc->GetDocumentURI());
rv = channel->AsyncOpen(listener, nsnull);
if (NS_SUCCEEDED(rv))
return NS_OK;
}
}
return rv;
}
nsresult nsPluginHost::NewFullPagePluginStreamListener(nsIURI* aURI,
nsNPAPIPluginInstance *aInstance,
nsIStreamListener **aStreamListener)
{
NS_ENSURE_ARG_POINTER(aURI);
NS_ENSURE_ARG_POINTER(aStreamListener);
nsRefPtr<nsPluginStreamListenerPeer> listener = new nsPluginStreamListenerPeer();
nsresult rv = listener->InitializeFullPage(aURI, aInstance);
if (NS_FAILED(rv)) {
return rv;
}
listener.forget(aStreamListener);
return NS_OK;
}
NS_IMETHODIMP nsPluginHost::Observe(nsISupports *aSubject,
const char *aTopic,
const PRUnichar *someData)
{
if (!nsCRT::strcmp(NS_XPCOM_SHUTDOWN_OBSERVER_ID, aTopic)) {
OnShutdown();
UnloadPlugins();
sInst->Release();
}
#ifdef MOZ_WIDGET_ANDROID
if (!nsCRT::strcmp("application-background", aTopic)) {
for(PRUint32 i = 0; i < mInstances.Length(); i++) {
mInstances[i]->NotifyForeground(false);
}
}
if (!nsCRT::strcmp("application-foreground", aTopic)) {
for(PRUint32 i = 0; i < mInstances.Length(); i++) {
if (mInstances[i]->IsOnScreen())
mInstances[i]->NotifyForeground(true);
}
}
if (!nsCRT::strcmp("memory-pressure", aTopic)) {
for(PRUint32 i = 0; i < mInstances.Length(); i++) {
mInstances[i]->MemoryPressure();
}
}
#endif
return NS_OK;
}
nsresult
nsPluginHost::HandleBadPlugin(PRLibrary* aLibrary, nsNPAPIPluginInstance *aInstance)
{
// the |aLibrary| parameter is not needed anymore, after we added |aInstance| which
// can also be used to look up the plugin name, but we cannot get rid of it because
// the |nsIPluginHost| interface is deprecated which in fact means 'frozen'
NS_ERROR("Plugin performed illegal operation");
NS_ENSURE_ARG_POINTER(aInstance);
if (mDontShowBadPluginMessage)
return NS_OK;
nsCOMPtr<nsIPluginInstanceOwner> owner;
aInstance->GetOwner(getter_AddRefs(owner));
nsCOMPtr<nsIPrompt> prompt;
GetPrompt(owner, getter_AddRefs(prompt));
if (!prompt)
return NS_OK;
nsCOMPtr<nsIStringBundleService> strings =
mozilla::services::GetStringBundleService();
if (!strings)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIStringBundle> bundle;
nsresult rv = strings->CreateBundle(BRAND_PROPERTIES_URL, getter_AddRefs(bundle));
if (NS_FAILED(rv))
return rv;
nsXPIDLString brandName;
rv = bundle->GetStringFromName(NS_LITERAL_STRING("brandShortName").get(),
getter_Copies(brandName));
if (NS_FAILED(rv))
return rv;
rv = strings->CreateBundle(PLUGIN_PROPERTIES_URL, getter_AddRefs(bundle));
if (NS_FAILED(rv))
return rv;
nsXPIDLString title, message, checkboxMessage;
rv = bundle->GetStringFromName(NS_LITERAL_STRING("BadPluginTitle").get(),
getter_Copies(title));
if (NS_FAILED(rv))
return rv;
const PRUnichar *formatStrings[] = { brandName.get() };
if (NS_FAILED(rv = bundle->FormatStringFromName(NS_LITERAL_STRING("BadPluginMessage").get(),
formatStrings, 1, getter_Copies(message))))
return rv;
rv = bundle->GetStringFromName(NS_LITERAL_STRING("BadPluginCheckboxMessage").get(),
getter_Copies(checkboxMessage));
if (NS_FAILED(rv))
return rv;
nsNPAPIPlugin *plugin = aInstance->GetPlugin();
if (!plugin)
return NS_ERROR_FAILURE;
nsPluginTag *pluginTag = TagForPlugin(plugin);
// add plugin name to the message
nsCString pluginname;
if (pluginTag) {
if (!pluginTag->mName.IsEmpty()) {
pluginname = pluginTag->mName;
} else {
pluginname = pluginTag->mFileName;
}
} else {
pluginname.AppendLiteral("???");
}
NS_ConvertUTF8toUTF16 msg(pluginname);
msg.AppendLiteral("\n\n");
msg.Append(message);
PRInt32 buttonPressed;
bool checkboxState = false;
rv = prompt->ConfirmEx(title, msg.get(),
nsIPrompt::BUTTON_TITLE_OK * nsIPrompt::BUTTON_POS_0,
nsnull, nsnull, nsnull,
checkboxMessage, &checkboxState, &buttonPressed);
if (NS_SUCCEEDED(rv) && checkboxState)
mDontShowBadPluginMessage = true;
return rv;
}
nsresult
nsPluginHost::ParsePostBufferToFixHeaders(const char *inPostData, PRUint32 inPostDataLen,
char **outPostData, PRUint32 *outPostDataLen)
{
if (!inPostData || !outPostData || !outPostDataLen)
return NS_ERROR_NULL_POINTER;
*outPostData = 0;
*outPostDataLen = 0;
const char CR = '\r';
const char LF = '\n';
const char CRLFCRLF[] = {CR,LF,CR,LF,'\0'}; // C string"\r\n\r\n"
const char ContentLenHeader[] = "Content-length";
nsAutoTArray<const char*, 8> singleLF;
const char *pSCntlh = 0;// pointer to start of ContentLenHeader in inPostData
const char *pSod = 0; // pointer to start of data in inPostData
const char *pEoh = 0; // pointer to end of headers in inPostData
const char *pEod = inPostData + inPostDataLen; // pointer to end of inPostData
if (*inPostData == LF) {
// If no custom headers are required, simply add a blank
// line ('\n') to the beginning of the file or buffer.
// so *inPostData == '\n' is valid
pSod = inPostData + 1;
} else {
const char *s = inPostData; //tmp pointer to sourse inPostData
while (s < pEod) {
if (!pSCntlh &&
(*s == 'C' || *s == 'c') &&
(s + sizeof(ContentLenHeader) - 1 < pEod) &&
(!PL_strncasecmp(s, ContentLenHeader, sizeof(ContentLenHeader) - 1)))
{
// lets assume this is ContentLenHeader for now
const char *p = pSCntlh = s;
p += sizeof(ContentLenHeader) - 1;
// search for first CR or LF == end of ContentLenHeader
for (; p < pEod; p++) {
if (*p == CR || *p == LF) {
// got delimiter,
// one more check; if previous char is a digit
// most likely pSCntlh points to the start of ContentLenHeader
if (*(p-1) >= '0' && *(p-1) <= '9') {
s = p;
}
break; //for loop
}
}
if (pSCntlh == s) { // curret ptr is the same
pSCntlh = 0; // that was not ContentLenHeader
break; // there is nothing to parse, break *WHILE LOOP* here
}
}
if (*s == CR) {
if (pSCntlh && // only if ContentLenHeader is found we are looking for end of headers
((s + sizeof(CRLFCRLF)-1) <= pEod) &&
!memcmp(s, CRLFCRLF, sizeof(CRLFCRLF)-1))
{
s += sizeof(CRLFCRLF)-1;
pEoh = pSod = s; // data stars here
break;
}
} else if (*s == LF) {
if (*(s-1) != CR) {
singleLF.AppendElement(s);
}
if (pSCntlh && (s+1 < pEod) && (*(s+1) == LF)) {
s++;
singleLF.AppendElement(s);
s++;
pEoh = pSod = s; // data stars here
break;
}
}
s++;
}
}
// deal with output buffer
if (!pSod) { // lets assume whole buffer is a data
pSod = inPostData;
}
PRUint32 newBufferLen = 0;
PRUint32 dataLen = pEod - pSod;
PRUint32 headersLen = pEoh ? pSod - inPostData : 0;
char *p; // tmp ptr into new output buf
if (headersLen) { // we got a headers
// this function does not make any assumption on correctness
// of ContentLenHeader value in this case.
newBufferLen = dataLen + headersLen;
// in case there were single LFs in headers
// reserve an extra space for CR will be added before each single LF
int cntSingleLF = singleLF.Length();
newBufferLen += cntSingleLF;
if (!(*outPostData = p = (char*)nsMemory::Alloc(newBufferLen)))
return NS_ERROR_OUT_OF_MEMORY;
// deal with single LF
const char *s = inPostData;
if (cntSingleLF) {
for (int i=0; i<cntSingleLF; i++) {
const char *plf = singleLF.ElementAt(i); // ptr to single LF in headers
int n = plf - s; // bytes to copy
if (n) { // for '\n\n' there is nothing to memcpy
memcpy(p, s, n);
p += n;
}
*p++ = CR;
s = plf;
*p++ = *s++;
}
}
// are we done with headers?
headersLen = pEoh - s;
if (headersLen) { // not yet
memcpy(p, s, headersLen); // copy the rest
p += headersLen;
}
} else if (dataLen) { // no ContentLenHeader is found but there is a data
// make new output buffer big enough
// to keep ContentLenHeader+value followed by data
PRUint32 l = sizeof(ContentLenHeader) + sizeof(CRLFCRLF) + 32;
newBufferLen = dataLen + l;
if (!(*outPostData = p = (char*)nsMemory::Alloc(newBufferLen)))
return NS_ERROR_OUT_OF_MEMORY;
headersLen = PR_snprintf(p, l,"%s: %ld%s", ContentLenHeader, dataLen, CRLFCRLF);
if (headersLen == l) { // if PR_snprintf has ate all extra space consider this as an error
nsMemory::Free(p);
*outPostData = 0;
return NS_ERROR_FAILURE;
}
p += headersLen;
newBufferLen = headersLen + dataLen;
}
// at this point we've done with headers.
// there is a possibility that input buffer has only headers info in it
// which already parsed and copied into output buffer.
// copy the data
if (dataLen) {
memcpy(p, pSod, dataLen);
}
*outPostDataLen = newBufferLen;
return NS_OK;
}
nsresult
nsPluginHost::CreateTempFileToPost(const char *aPostDataURL, nsIFile **aTmpFile)
{
nsresult rv;
PRInt64 fileSize;
nsCAutoString filename;
// stat file == get size & convert file:///c:/ to c: if needed
nsCOMPtr<nsIFile> inFile;
rv = NS_GetFileFromURLSpec(nsDependentCString(aPostDataURL),
getter_AddRefs(inFile));
if (NS_FAILED(rv)) {
nsCOMPtr<nsILocalFile> localFile;
rv = NS_NewNativeLocalFile(nsDependentCString(aPostDataURL), false,
getter_AddRefs(localFile));
if (NS_FAILED(rv)) return rv;
inFile = localFile;
}
rv = inFile->GetFileSize(&fileSize);
if (NS_FAILED(rv)) return rv;
rv = inFile->GetNativePath(filename);
if (NS_FAILED(rv)) return rv;
if (!LL_IS_ZERO(fileSize)) {
nsCOMPtr<nsIInputStream> inStream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(inStream), inFile);
if (NS_FAILED(rv)) return rv;
// Create a temporary file to write the http Content-length:
// %ld\r\n\" header and "\r\n" == end of headers for post data to
nsCOMPtr<nsIFile> tempFile;
rv = GetPluginTempDir(getter_AddRefs(tempFile));
if (NS_FAILED(rv))
return rv;
nsCAutoString inFileName;
inFile->GetNativeLeafName(inFileName);
// XXX hack around bug 70083
inFileName.Insert(NS_LITERAL_CSTRING("post-"), 0);
rv = tempFile->AppendNative(inFileName);
if (NS_FAILED(rv))
return rv;
// make it unique, and mode == 0600, not world-readable
rv = tempFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIOutputStream> outStream;
if (NS_SUCCEEDED(rv)) {
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outStream),
tempFile,
(PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE),
0600); // 600 so others can't read our form data
}
NS_ASSERTION(NS_SUCCEEDED(rv), "Post data file couldn't be created!");
if (NS_FAILED(rv))
return rv;
char buf[1024];
PRUint32 br, bw;
bool firstRead = true;
while (1) {
// Read() mallocs if buffer is null
rv = inStream->Read(buf, 1024, &br);
if (NS_FAILED(rv) || (PRInt32)br <= 0)
break;
if (firstRead) {
//"For protocols in which the headers must be distinguished from the body,
// such as HTTP, the buffer or file should contain the headers, followed by
// a blank line, then the body. If no custom headers are required, simply
// add a blank line ('\n') to the beginning of the file or buffer.
char *parsedBuf;
// assuming first 1K (or what we got) has all headers in,
// lets parse it through nsPluginHost::ParsePostBufferToFixHeaders()
ParsePostBufferToFixHeaders((const char *)buf, br, &parsedBuf, &bw);
rv = outStream->Write(parsedBuf, bw, &br);
nsMemory::Free(parsedBuf);
if (NS_FAILED(rv) || (bw != br))
break;
firstRead = false;
continue;
}
bw = br;
rv = outStream->Write(buf, bw, &br);
if (NS_FAILED(rv) || (bw != br))
break;
}
inStream->Close();
outStream->Close();
if (NS_SUCCEEDED(rv))
*aTmpFile = tempFile.forget().get();
}
return rv;
}
nsresult
nsPluginHost::NewPluginNativeWindow(nsPluginNativeWindow ** aPluginNativeWindow)
{
return PLUG_NewPluginNativeWindow(aPluginNativeWindow);
}
nsresult
nsPluginHost::InstantiateDummyJavaPlugin(nsIPluginInstanceOwner *aOwner)
{
// Pass false as the second arg, we want the answer to be the
// same here whether the Java plugin is enabled or not.
nsPluginTag *plugin = FindPluginForType("application/x-java-vm", false);
if (!plugin || !plugin->mIsNPRuntimeEnabledJavaPlugin) {
// No NPRuntime enabled Java plugin found, no point in
// instantiating a dummy plugin then.
return NS_OK;
}
nsresult rv = SetUpPluginInstance("application/x-java-vm", nsnull, aOwner);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<nsNPAPIPluginInstance> instance;
aOwner->GetInstance(getter_AddRefs(instance));
if (!instance)
return NS_OK;
instance->DefineJavaProperties();
return NS_OK;
}
nsresult
nsPluginHost::GetPluginName(nsNPAPIPluginInstance *aPluginInstance,
const char** aPluginName)
{
nsNPAPIPluginInstance *instance = static_cast<nsNPAPIPluginInstance*>(aPluginInstance);
if (!instance)
return NS_ERROR_FAILURE;
nsNPAPIPlugin* plugin = instance->GetPlugin();
if (!plugin)
return NS_ERROR_FAILURE;
*aPluginName = TagForPlugin(plugin)->mName.get();
return NS_OK;
}
nsresult
nsPluginHost::GetPluginTagForInstance(nsNPAPIPluginInstance *aPluginInstance,
nsIPluginTag **aPluginTag)
{
NS_ENSURE_ARG_POINTER(aPluginInstance);
NS_ENSURE_ARG_POINTER(aPluginTag);
nsNPAPIPlugin *plugin = aPluginInstance->GetPlugin();
if (!plugin)
return NS_ERROR_FAILURE;
*aPluginTag = TagForPlugin(plugin);
NS_ADDREF(*aPluginTag);
return NS_OK;
}
#ifdef MAC_CARBON_PLUGINS
// Flash requires a minimum of 8 events per second to avoid audio skipping.
// Since WebKit uses a hidden plugin event rate of 4 events per second Flash
// uses a Carbon timer for WebKit which fires at 8 events per second.
#define HIDDEN_PLUGIN_DELAY 125
#define VISIBLE_PLUGIN_DELAY 20
#endif
void nsPluginHost::AddIdleTimeTarget(nsIPluginInstanceOwner* objectFrame, bool isVisible)
{
#ifdef MAC_CARBON_PLUGINS
nsTObserverArray<nsIPluginInstanceOwner*> *targetArray;
if (isVisible) {
targetArray = &mVisibleTimerTargets;
} else {
targetArray = &mHiddenTimerTargets;
}
if (targetArray->Contains(objectFrame)) {
return;
}
targetArray->AppendElement(objectFrame);
if (targetArray->Length() == 1) {
if (isVisible) {
mVisiblePluginTimer->InitWithCallback(this, VISIBLE_PLUGIN_DELAY, nsITimer::TYPE_REPEATING_SLACK);
} else {
mHiddenPluginTimer->InitWithCallback(this, HIDDEN_PLUGIN_DELAY, nsITimer::TYPE_REPEATING_SLACK);
}
}
#endif
}
void nsPluginHost::RemoveIdleTimeTarget(nsIPluginInstanceOwner* objectFrame)
{
#ifdef MAC_CARBON_PLUGINS
bool visibleRemoved = mVisibleTimerTargets.RemoveElement(objectFrame);
if (visibleRemoved && mVisibleTimerTargets.IsEmpty()) {
mVisiblePluginTimer->Cancel();
}
bool hiddenRemoved = mHiddenTimerTargets.RemoveElement(objectFrame);
if (hiddenRemoved && mHiddenTimerTargets.IsEmpty()) {
mHiddenPluginTimer->Cancel();
}
NS_ASSERTION(!(hiddenRemoved && visibleRemoved), "Plugin instance received visible and hidden idle event notifications");
#endif
}
NS_IMETHODIMP nsPluginHost::Notify(nsITimer* timer)
{
#ifdef MAC_CARBON_PLUGINS
if (timer == mVisiblePluginTimer) {
nsTObserverArray<nsIPluginInstanceOwner*>::ForwardIterator iter(mVisibleTimerTargets);
while (iter.HasMore()) {
iter.GetNext()->SendIdleEvent();
}
return NS_OK;
} else if (timer == mHiddenPluginTimer) {
nsTObserverArray<nsIPluginInstanceOwner*>::ForwardIterator iter(mHiddenTimerTargets);
while (iter.HasMore()) {
iter.GetNext()->SendIdleEvent();
}
return NS_OK;
}
#endif
nsRefPtr<nsPluginTag> pluginTag = mPlugins;
while (pluginTag) {
if (pluginTag->mUnloadTimer == timer) {
if (!IsRunningPlugin(pluginTag)) {
pluginTag->TryUnloadPlugin(false);
}
return NS_OK;
}
pluginTag = pluginTag->mNext;
}
return NS_ERROR_FAILURE;
}
#ifdef XP_WIN
// Re-enable any top level browser windows that were disabled by modal dialogs
// displayed by the crashed plugin.
static void
CheckForDisabledWindows()
{
nsCOMPtr<nsIWindowMediator> wm(do_GetService(NS_WINDOWMEDIATOR_CONTRACTID));
if (!wm)
return;
nsCOMPtr<nsISimpleEnumerator> windowList;
wm->GetXULWindowEnumerator(nsnull, getter_AddRefs(windowList));
if (!windowList)
return;
bool haveWindows;
do {
windowList->HasMoreElements(&haveWindows);
if (!haveWindows)
return;
nsCOMPtr<nsISupports> supportsWindow;
windowList->GetNext(getter_AddRefs(supportsWindow));
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(supportsWindow));
if (baseWin) {
bool aFlag;
nsCOMPtr<nsIWidget> widget;
baseWin->GetMainWidget(getter_AddRefs(widget));
if (widget && !widget->GetParent() &&
NS_SUCCEEDED(widget->IsVisible(aFlag)) && aFlag == true &&
NS_SUCCEEDED(widget->IsEnabled(&aFlag)) && aFlag == false) {
nsIWidget * child = widget->GetFirstChild();
bool enable = true;
while (child) {
nsWindowType aType;
if (NS_SUCCEEDED(child->GetWindowType(aType)) &&
aType == eWindowType_dialog) {
enable = false;
break;
}
child = child->GetNextSibling();
}
if (enable) {
widget->Enable(true);
}
}
}
} while (haveWindows);
}
#endif
void
nsPluginHost::PluginCrashed(nsNPAPIPlugin* aPlugin,
const nsAString& pluginDumpID,
const nsAString& browserDumpID)
{
nsPluginTag* crashedPluginTag = TagForPlugin(aPlugin);
// Notify the app's observer that a plugin crashed so it can submit
// a crashreport.
bool submittedCrashReport = false;
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
nsCOMPtr<nsIWritablePropertyBag2> propbag =
do_CreateInstance("@mozilla.org/hash-property-bag;1");
if (obsService && propbag) {
propbag->SetPropertyAsAString(NS_LITERAL_STRING("pluginDumpID"),
pluginDumpID);
propbag->SetPropertyAsAString(NS_LITERAL_STRING("browserDumpID"),
browserDumpID);
propbag->SetPropertyAsBool(NS_LITERAL_STRING("submittedCrashReport"),
submittedCrashReport);
obsService->NotifyObservers(propbag, "plugin-crashed", nsnull);
// see if an observer submitted a crash report.
propbag->GetPropertyAsBool(NS_LITERAL_STRING("submittedCrashReport"),
&submittedCrashReport);
}
// Invalidate each nsPluginInstanceTag for the crashed plugin
for (PRUint32 i = mInstances.Length(); i > 0; i--) {
nsNPAPIPluginInstance* instance = mInstances[i - 1];
if (instance->GetPlugin() == aPlugin) {
// notify the content node (nsIObjectLoadingContent) that the
// plugin has crashed
nsCOMPtr<nsIDOMElement> domElement;
instance->GetDOMElement(getter_AddRefs(domElement));
nsCOMPtr<nsIObjectLoadingContent> objectContent(do_QueryInterface(domElement));
if (objectContent) {
objectContent->PluginCrashed(crashedPluginTag, pluginDumpID, browserDumpID,
submittedCrashReport);
}
instance->Destroy();
mInstances.RemoveElement(instance);
OnPluginInstanceDestroyed(crashedPluginTag);
}
}
// Only after all instances have been invalidated is it safe to null
// out nsPluginTag.mPlugin. The next time we try to create an
// instance of this plugin we reload it (launch a new plugin process).
crashedPluginTag->mPlugin = nsnull;
#ifdef XP_WIN
CheckForDisabledWindows();
#endif
}
nsNPAPIPluginInstance*
nsPluginHost::FindInstance(const char *mimetype)
{
for (PRUint32 i = 0; i < mInstances.Length(); i++) {
nsNPAPIPluginInstance* instance = mInstances[i];
const char* mt;
nsresult rv = instance->GetMIMEType(&mt);
if (NS_FAILED(rv))
continue;
if (PL_strcasecmp(mt, mimetype) == 0)
return instance;
}
return nsnull;
}
nsNPAPIPluginInstance*
nsPluginHost::FindOldestStoppedInstance()
{
nsNPAPIPluginInstance *oldestInstance = nsnull;
TimeStamp oldestTime = TimeStamp::Now();
for (PRUint32 i = 0; i < mInstances.Length(); i++) {
nsNPAPIPluginInstance *instance = mInstances[i];
if (instance->IsRunning())
continue;
TimeStamp time = instance->StopTime();
if (time < oldestTime) {
oldestTime = time;
oldestInstance = instance;
}
}
return oldestInstance;
}
PRUint32
nsPluginHost::StoppedInstanceCount()
{
PRUint32 stoppedCount = 0;
for (PRUint32 i = 0; i < mInstances.Length(); i++) {
nsNPAPIPluginInstance *instance = mInstances[i];
if (!instance->IsRunning())
stoppedCount++;
}
return stoppedCount;
}
nsTArray< nsRefPtr<nsNPAPIPluginInstance> >*
nsPluginHost::InstanceArray()
{
return &mInstances;
}
void
nsPluginHost::DestroyRunningInstances(nsISupportsArray* aReloadDocs, nsPluginTag* aPluginTag)
{
for (PRInt32 i = mInstances.Length(); i > 0; i--) {
nsNPAPIPluginInstance *instance = mInstances[i - 1];
if (instance->IsRunning() && (!aPluginTag || aPluginTag == TagForPlugin(instance->GetPlugin()))) {
instance->SetWindow(nsnull);
instance->Stop();
// If we've been passed an array to return, lets collect all our documents,
// removing duplicates. These will be reframed (embedded) or reloaded (full-page) later
// to kickstart our instances.
if (aReloadDocs) {
nsCOMPtr<nsIPluginInstanceOwner> owner;
instance->GetOwner(getter_AddRefs(owner));
if (owner) {
nsCOMPtr<nsIDocument> doc;
owner->GetDocument(getter_AddRefs(doc));
if (doc && aReloadDocs->IndexOf(doc) == -1) // don't allow for duplicates
aReloadDocs->AppendElement(doc);
}
}
// Get rid of all the instances without the possibility of caching.
nsPluginTag* pluginTag = TagForPlugin(instance->GetPlugin());
instance->SetWindow(nsnull);
instance->Destroy();
mInstances.RemoveElement(instance);
OnPluginInstanceDestroyed(pluginTag);
}
}
}
// Runnable that does an async destroy of a plugin.
class nsPluginDestroyRunnable : public nsRunnable,
public PRCList
{
public:
nsPluginDestroyRunnable(nsNPAPIPluginInstance *aInstance)
: mInstance(aInstance)
{
PR_INIT_CLIST(this);
PR_APPEND_LINK(this, &sRunnableListHead);
}
virtual ~nsPluginDestroyRunnable()
{
PR_REMOVE_LINK(this);
}
NS_IMETHOD Run()
{
nsRefPtr<nsNPAPIPluginInstance> instance;
// Null out mInstance to make sure this code in another runnable
// will do the right thing even if someone was holding on to this
// runnable longer than we expect.
instance.swap(mInstance);
if (PluginDestructionGuard::DelayDestroy(instance)) {
// It's still not safe to destroy the plugin, it's now up to the
// outermost guard on the stack to take care of the destruction.
return NS_OK;
}
nsPluginDestroyRunnable *r =
static_cast<nsPluginDestroyRunnable*>(PR_NEXT_LINK(&sRunnableListHead));
while (r != &sRunnableListHead) {
if (r != this && r->mInstance == instance) {
// There's another runnable scheduled to tear down
// instance. Let it do the job.
return NS_OK;
}
r = static_cast<nsPluginDestroyRunnable*>(PR_NEXT_LINK(r));
}
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("Doing delayed destroy of instance %p\n", instance.get()));
nsRefPtr<nsPluginHost> host = nsPluginHost::GetInst();
if (host)
host->StopPluginInstance(instance);
PLUGIN_LOG(PLUGIN_LOG_NORMAL,
("Done with delayed destroy of instance %p\n", instance.get()));
return NS_OK;
}
protected:
nsRefPtr<nsNPAPIPluginInstance> mInstance;
static PRCList sRunnableListHead;
};
PRCList nsPluginDestroyRunnable::sRunnableListHead =
PR_INIT_STATIC_CLIST(&nsPluginDestroyRunnable::sRunnableListHead);
PRCList PluginDestructionGuard::sListHead =
PR_INIT_STATIC_CLIST(&PluginDestructionGuard::sListHead);
PluginDestructionGuard::~PluginDestructionGuard()
{
NS_ASSERTION(NS_IsMainThread(), "Should be on the main thread");
PR_REMOVE_LINK(this);
if (mDelayedDestroy) {
// We've attempted to destroy the plugin instance we're holding on
// to while we were guarding it. Do the actual destroy now, off of
// a runnable.
nsRefPtr<nsPluginDestroyRunnable> evt =
new nsPluginDestroyRunnable(mInstance);
NS_DispatchToMainThread(evt);
}
}
// static
bool
PluginDestructionGuard::DelayDestroy(nsNPAPIPluginInstance *aInstance)
{
NS_ASSERTION(NS_IsMainThread(), "Should be on the main thread");
NS_ASSERTION(aInstance, "Uh, I need an instance!");
// Find the first guard on the stack and make it do a delayed
// destroy upon destruction.
PluginDestructionGuard *g =
static_cast<PluginDestructionGuard*>(PR_LIST_HEAD(&sListHead));
while (g != &sListHead) {
if (g->mInstance == aInstance) {
g->mDelayedDestroy = true;
return true;
}
g = static_cast<PluginDestructionGuard*>(PR_NEXT_LINK(g));
}
return false;
}
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