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pjs/uriloader/exthandler/nsExternalHelperAppService.cpp

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/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 the Mozilla browser.
*
* The Initial Developer of the Original Code is Netscape
* Communications, Inc. Portions created by Netscape are
* Copyright (C) 1999, Mozilla. All Rights Reserved.
*
* Contributor(s):
* Scott MacGregor <mscott@netscape.com>
* Bill Law <law@netscape.com>
*/
#include "nsExternalHelperAppService.h"
#include "nsIURI.h"
#include "nsIURL.h"
#include "nsIFile.h"
#include "nsIChannel.h"
#include "nsIFileChannel.h"
#include "nsIDirectoryService.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsMemory.h"
#include "nsIStreamListener.h"
#include "nsIMIMEService.h"
#include "nsILoadGroup.h"
#include "nsCURILoader.h"
#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"
// used to manage our in memory data source of helper applications
#include "nsRDFCID.h"
#include "rdf.h"
#include "nsIRDFService.h"
#include "nsIRDFRemoteDataSource.h"
#include "nsIFileSpec.h"
#include "nsHelperAppRDF.h"
#include "nsIMIMEInfo.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIRefreshURI.h"
#include "nsIDocumentLoader.h"
#include "nsIHelperAppLauncherDialog.h"
#include "nsITransport.h"
#include "nsIFileTransportService.h"
#include "nsCExternalHandlerService.h" // contains contractids for the helper app service
#include "nsIIOService.h"
#include "nsNetCID.h"
#include "nsMimeTypes.h"
// used for http content header disposition information.
#include "nsIHttpChannel.h"
#include "nsIAtom.h"
#include "nsIObserverService.h" // so we can be an xpcom shutdown observer
#ifdef XP_MAC
#include "nsILocalFileMac.h"
#include "nsIInternetConfigService.h"
#include "nsIAppleFileDecoder.h"
#endif // XP_MAC
#include "nsIPluginHost.h"
const char *FORCE_ALWAYS_ASK_PREF = "browser.helperApps.alwaysAsk.force";
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
static NS_DEFINE_CID(kRDFXMLDataSourceCID, NS_RDFXMLDATASOURCE_CID);
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
static NS_DEFINE_CID(kPluginManagerCID, NS_PLUGINMANAGER_CID);
// forward declaration of a private helper function
static PRBool PR_CALLBACK DeleteEntry(nsHashKey *aKey, void *aData, void* closure);
// The following static table lists all of the "default" content type mappings we are going to use.
// These are only the ones handled internally. These must be listed here so that we can do the
// proper file-extension to content-type mapping. These cannot be overridden by user helper app
// prefs.
static nsDefaultMimeTypeEntry defaultMimeEntries [] =
{
{ TEXT_PLAIN, "txt,text", "Text File", 'TEXT', 'ttxt' },
{ TEXT_HTML, "htm,html,shtml,ehtml", "Hyper Text Markup Language", 'TEXT', 'MOSS' },
{ TEXT_RDF, "rdf", "Resource Description Framework", 'TEXT','ttxt' },
{ TEXT_XUL, "xul", "XML-Based User Interface Language", 'TEXT', 'ttxt' },
{ TEXT_XML, "xml,xsl", "Extensible Markup Language", 'TEXT', 'ttxt' },
{ "application/xhtml+xml", "xhtml,xht", "Extensible HyperText Markup Language", 'TEXT', 'ttxt' },
{ TEXT_CSS, "css", "Style Sheet", 'TEXT', 'ttxt' },
{ APPLICATION_JAVASCRIPT, "js", "Javascript Source File", 'TEXT', 'ttxt' },
{ MESSAGE_RFC822, "eml", "RFC-822 data", 'TEXT', 'MOSS' },
{ IMAGE_GIF, "gif", "GIF Image", 0,0 },
{ IMAGE_JPG, "jpeg,jpg", "JPEG Image", 0, 0 },
{ IMAGE_PNG, "png", "PNG Image", 0, 0 },
{ APPLICATION_XPINSTALL, "xpi", "XPInstall Install", 'xpi*','MOSS' },
};
// This table lists all of the 'extra" content types that we can deduce from particular
// file extensions. These entries also ensure that we provide a good descriptive name
// when we encounter files with these content types and/or extensions. These can be
// overridden by user helper app prefs.
static nsDefaultMimeTypeEntry extraMimeEntries [] =
{
#if defined(VMS)
{ APPLICATION_OCTET_STREAM, "exe,bin,sav,bck,pcsi,dcx_axpexe,dcx_vaxexe,sfx_axpexe,sfx_vaxexe", "Binary Executable", 0, 0 },
#elif defined(XP_MAC) // don't define .bin on the mac...use internet config to look that up...
{ APPLICATION_OCTET_STREAM, "exe", "Binary Executable", 0, 0 },
#else
{ APPLICATION_OCTET_STREAM, "exe,bin", "Binary Executable", 0, 0 },
#endif
{ APPLICATION_GZIP2, "gz", "gzip", 0, 0 },
{ IMAGE_ART, "art", "ART Image", 0, 0 },
{ IMAGE_TIFF, "tiff,tif", "TIFF Image", 0, 0 },
{ APPLICATION_POSTSCRIPT, "ps,eps,ai", "Postscript File",0, 0 },
{ "application/x-arj", "arj", "ARJ file", 0,0 },
};
NS_IMPL_THREADSAFE_ADDREF(nsExternalHelperAppService)
NS_IMPL_THREADSAFE_RELEASE(nsExternalHelperAppService)
NS_INTERFACE_MAP_BEGIN(nsExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY(nsIExternalHelperAppService)
NS_INTERFACE_MAP_ENTRY(nsPIExternalAppLauncher)
NS_INTERFACE_MAP_ENTRY(nsIExternalProtocolService)
NS_INTERFACE_MAP_ENTRY(nsIMIMEService)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END_THREADSAFE
nsExternalHelperAppService::nsExternalHelperAppService() : mDataSourceInitialized(PR_FALSE)
{
NS_INIT_ISUPPORTS();
// we need a good guess for a size for our hash table...let's try O(n) where n = # of default
// entries we'll be adding to the hash table. Of course, we'll be adding more entries as we
// discover those content types at run time...
PRInt32 hashTableSize = sizeof(defaultMimeEntries) / sizeof(defaultMimeEntries[0]);
mMimeInfoCache = new nsHashtable(hashTableSize);
AddDefaultMimeTypesToCache();
/* Add an observer to XPCOM shutdown */
nsresult rv = NS_OK;
nsCOMPtr<nsIObserverService> obs = do_GetService(NS_OBSERVERSERVICE_CONTRACTID, &rv);
if (obs)
rv = obs->AddObserver(NS_STATIC_CAST(nsIObserver*, this), NS_LITERAL_STRING(NS_XPCOM_SHUTDOWN_OBSERVER_ID).get());
}
nsExternalHelperAppService::~nsExternalHelperAppService()
{
if (mMimeInfoCache)
{
mMimeInfoCache->Reset(DeleteEntry, nsnull);
delete mMimeInfoCache;
}
}
nsresult nsExternalHelperAppService::InitDataSource()
{
nsresult rv = NS_OK;
// don't re-initialize the data source if we've already done so...
if (mDataSourceInitialized)
return NS_OK;
nsCOMPtr<nsIRDFService> rdf = do_GetService(kRDFServiceCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIRDFRemoteDataSource> remoteDS = do_CreateInstance(kRDFXMLDataSourceCID, &rv);
mOverRideDataSource = do_QueryInterface(remoteDS);
NS_ENSURE_SUCCESS(rv,rv);
// Get URI of the mimeTypes.rdf data source. Do this the same way it's done in
// pref-applications-edit.xul, for example, to ensure we get the same data source!
// Note that the way it was done previously (using nsIFileSpec) worked better, but it
// produced a different uri (it had "file:///C|" instead of "file:///C:". What can you do?
nsCOMPtr<nsIFile> mimeTypesFile;
rv = NS_GetSpecialDirectory(NS_APP_USER_MIMETYPES_50_FILE, getter_AddRefs(mimeTypesFile));
NS_ENSURE_SUCCESS(rv, rv);
// Get file url spec to be used to initialize the DS.
nsXPIDLCString urlSpec;
rv = mimeTypesFile->GetURL(getter_Copies(urlSpec));
NS_ENSURE_SUCCESS(rv, rv);
rv = remoteDS->Init(urlSpec);
NS_ENSURE_SUCCESS(rv, rv);
// for now load synchronously (async seems to be busted)
rv = remoteDS->Refresh(PR_TRUE);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed refresh?\n");
#ifdef DEBUG_mscott
PRBool loaded;
rv = remoteDS->GetLoaded(&loaded);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed getload\n");
printf("After refresh: datasource is %s\n", loaded ? "loaded" : "not loaded");
#endif
// initialize our resources if we haven't done so already...
if (!kNC_Description)
{
rdf->GetResource(NC_RDF_DESCRIPTION, getter_AddRefs(kNC_Description));
rdf->GetResource(NC_RDF_VALUE, getter_AddRefs(kNC_Value));
rdf->GetResource(NC_RDF_FILEEXTENSIONS,getter_AddRefs(kNC_FileExtensions));
rdf->GetResource(NC_RDF_PATH, getter_AddRefs(kNC_Path));
rdf->GetResource(NC_RDF_SAVETODISK, getter_AddRefs(kNC_SaveToDisk));
rdf->GetResource(NC_RDF_HANDLEINTERNAL,getter_AddRefs(kNC_HandleInternal));
rdf->GetResource(NC_RDF_ALWAYSASK, getter_AddRefs(kNC_AlwaysAsk));
rdf->GetResource(NC_RDF_PRETTYNAME, getter_AddRefs(kNC_PrettyName));
}
mDataSourceInitialized = PR_TRUE;
return rv;
}
/* boolean canHandleContent (in string aMimeContentType); */
NS_IMETHODIMP nsExternalHelperAppService::CanHandleContent(const char *aMimeContentType, nsIURI * aURI, PRBool *_retval)
{
*_retval = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP nsExternalHelperAppService::DoContent(const char *aMimeContentType, nsIURI *aURI, nsISupports *aWindowContext,
PRBool *aAbortProcess, nsIStreamListener ** aStreamListener)
{
nsCOMPtr<nsIMIMEInfo> mimeInfo;
nsXPIDLCString fileExtension;
// (1) Try to find a mime object by looking the mime type
GetFromMIMEType(aMimeContentType, getter_AddRefs(mimeInfo));
if (!mimeInfo)
{
// if we couldn't find one, don't give up yet! Try and see if there is an extension in the
// url itself...
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
if (url)
{
url->GetFileExtension(getter_Copies(fileExtension));
nsCOMPtr<nsIMIMEInfo> tempMIMEObject;
GetFromExtension(fileExtension, getter_AddRefs(tempMIMEObject));
// only over write mimeInfo if we got a non-null temp mime info object.
if (tempMIMEObject)
{
mimeInfo = tempMIMEObject;
// The OS might have thought this extension was a different mime type.
// We must reset this to match the actual mime type. Otherwise, we
// won't use this MIMEInfo when we see the real mime type next time.
//mimeInfo->SetMIMEType(aMimeContentType);
}
}
}
// (2) if we don't have a match yet, see if this type is in our list of extras.
if (!mimeInfo)
{
GetMIMEInfoForMimeTypeFromExtras(aMimeContentType, getter_AddRefs(mimeInfo));
}
// (3) if we STILL don't have a mime object for this content type then give up
// and create a new mime info object for it and use it
if (!mimeInfo)
{
mimeInfo = do_CreateInstance(NS_MIMEINFO_CONTRACTID);
if (mimeInfo)
{
// the file extension was conviently already filled in by our call to FindOSMimeInfoForType.
mimeInfo->SetFileExtensions(fileExtension);
mimeInfo->SetMIMEType(aMimeContentType);
// we may need to add a new method to nsIMIMEService so we can add this mime info object to our mime service.
}
}
*aStreamListener = nsnull;
if (mimeInfo)
{
// ensure that the file extension field is always filled in
mimeInfo->FirstExtension(getter_Copies(fileExtension));
// this code is incomplete and just here to get things started..
nsExternalAppHandler * handler = CreateNewExternalHandler(mimeInfo, fileExtension, aWindowContext);
handler->QueryInterface(NS_GET_IID(nsIStreamListener), (void **) aStreamListener);
}
return NS_OK;
}
NS_IMETHODIMP nsExternalHelperAppService::LaunchAppWithTempFile(nsIMIMEInfo * aMimeInfo, nsIFile * aTempFile)
{
// this method should only be implemented by each OS specific implementation of this service.
return NS_ERROR_NOT_IMPLEMENTED;
}
nsExternalAppHandler * nsExternalHelperAppService::CreateNewExternalHandler(nsIMIMEInfo * aMIMEInfo,
const char * aTempFileExtension,
nsISupports * aWindowContext)
{
nsExternalAppHandler* handler = nsnull;
NS_NEWXPCOM(handler, nsExternalAppHandler);
// add any XP intialization code for an external handler that we may need here...
// right now we don't have any but i bet we will before we are done.
handler->Init(aMIMEInfo, aTempFileExtension, aWindowContext);
return handler;
}
nsresult nsExternalHelperAppService::FillTopLevelProperties(const char * aContentType, nsIRDFResource * aContentTypeNodeResource,
nsIRDFService * aRDFService, nsIMIMEInfo * aMIMEInfo)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIRDFNode> target;
nsCOMPtr<nsIRDFLiteral> literal;
const PRUnichar * stringValue;
rv = InitDataSource();
if (NS_FAILED(rv)) return NS_OK;
// set the mime type
aMIMEInfo->SetMIMEType(aContentType);
// set the pretty name description
FillLiteralValueFromTarget(aContentTypeNodeResource,kNC_Description, &stringValue);
aMIMEInfo->SetDescription(stringValue);
// now iterate over all the file type extensions...
nsCOMPtr<nsISimpleEnumerator> fileExtensions;
mOverRideDataSource->GetTargets(aContentTypeNodeResource, kNC_FileExtensions, PR_TRUE, getter_AddRefs(fileExtensions));
PRBool hasMoreElements = PR_FALSE;
nsCAutoString fileExtension;
nsCOMPtr<nsISupports> element;
if (fileExtensions)
{
fileExtensions->HasMoreElements(&hasMoreElements);
while (hasMoreElements)
{
fileExtensions->GetNext(getter_AddRefs(element));
if (element)
{
literal = do_QueryInterface(element);
if (!literal) return NS_ERROR_FAILURE;
literal->GetValueConst(&stringValue);
fileExtension.AssignWithConversion(stringValue);
if (!fileExtension.IsEmpty())
aMIMEInfo->AppendExtension(fileExtension);
}
fileExtensions->HasMoreElements(&hasMoreElements);
} // while we have more extensions to parse....
}
return rv;
}
nsresult nsExternalHelperAppService::FillLiteralValueFromTarget(nsIRDFResource * aSource, nsIRDFResource * aProperty, const PRUnichar ** aLiteralValue)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIRDFLiteral> literal;
nsCOMPtr<nsIRDFNode> target;
*aLiteralValue = nsnull;
rv = InitDataSource();
if (NS_FAILED(rv)) return rv;
mOverRideDataSource->GetTarget(aSource, aProperty, PR_TRUE, getter_AddRefs(target));
if (target)
{
literal = do_QueryInterface(target);
if (!literal)
return NS_ERROR_FAILURE;
literal->GetValueConst(aLiteralValue);
}
else
rv = NS_ERROR_FAILURE;
return rv;
}
nsresult nsExternalHelperAppService::FillContentHandlerProperties(const char * aContentType,
nsIRDFResource * aContentTypeNodeResource,
nsIRDFService * aRDFService,
nsIMIMEInfo * aMIMEInfo)
{
nsCOMPtr<nsIRDFNode> target;
nsCOMPtr<nsIRDFLiteral> literal;
const PRUnichar * stringValue = nsnull;
nsresult rv = NS_OK;
rv = InitDataSource();
if (NS_FAILED(rv)) return rv;
nsCString contentTypeHandlerNodeName (NC_CONTENT_NODE_HANDLER_PREFIX);
contentTypeHandlerNodeName.Append(aContentType);
nsCOMPtr<nsIRDFResource> contentTypeHandlerNodeResource;
aRDFService->GetResource(contentTypeHandlerNodeName, getter_AddRefs(contentTypeHandlerNodeResource));
NS_ENSURE_TRUE(contentTypeHandlerNodeResource, NS_ERROR_FAILURE); // that's not good! we have an error in the rdf file
// now process the application handler information
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::useHelperApp);
// save to disk
FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_SaveToDisk, &stringValue);
NS_NAMED_LITERAL_STRING( trueString, "true" );
if (trueString.Equals(stringValue))
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
// handle internal
FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_HandleInternal, &stringValue);
if (trueString.Equals(stringValue))
aMIMEInfo->SetPreferredAction(nsIMIMEInfo::handleInternally);
// always ask --> these fields aren't stored in the data source anymore
//FillLiteralValueFromTarget(contentTypeHandlerNodeResource,kNC_AlwaysAsk, &stringValue);
//if (trueString.Equals(stringValue))
// aMIMEInfo->SetAlwaysAskBeforeHandling(PR_TRUE);
// else
// aMIMEInfo->SetAlwaysAskBeforeHandling(PR_FALSE);
// now digest the external application information
nsCAutoString externalAppNodeName (NC_CONTENT_NODE_EXTERNALAPP_PREFIX);
externalAppNodeName.Append(aContentType);
nsCOMPtr<nsIRDFResource> externalAppNodeResource;
aRDFService->GetResource(externalAppNodeName, getter_AddRefs(externalAppNodeResource));
if (externalAppNodeResource)
{
FillLiteralValueFromTarget(externalAppNodeResource, kNC_PrettyName, &stringValue);
if (stringValue)
aMIMEInfo->SetApplicationDescription(stringValue);
FillLiteralValueFromTarget(externalAppNodeResource, kNC_Path, &stringValue);
if (stringValue)
{
nsCOMPtr<nsIFile> application;
GetFileTokenForPath(stringValue, getter_AddRefs(application));
if (application)
aMIMEInfo->SetPreferredApplicationHandler(application);
}
}
return rv;
}
nsresult nsExternalHelperAppService::GetMIMEInfoForMimeTypeFromDS(const char * aContentType, nsIMIMEInfo ** aMIMEInfo)
{
nsresult rv = NS_OK;
rv = InitDataSource();
if (NS_FAILED(rv)) return rv;
// if we have a data source then use the information found in that...
// if that fails....then try to the old mime service that i'm going to be
// obsoleting soon...
if (mOverRideDataSource)
{
// Get the RDF service.
nsCOMPtr<nsIRDFService> rdf = do_GetService(kRDFServiceCID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// Build uri for the mimetype resource.
nsCString contentTypeNodeName (NC_CONTENT_NODE_PREFIX);
contentTypeNodeName.Append(aContentType);
// Get the mime type resource.
nsCOMPtr<nsIRDFResource> contentTypeNodeResource;
rv = rdf->GetResource(contentTypeNodeName, getter_AddRefs(contentTypeNodeResource));
NS_ENSURE_SUCCESS(rv, rv);
// we need a way to determine if this content type resource is really in the graph or not...
// ...Test that there's a #value arc from the mimetype resource to the mimetype literal string.
nsCOMPtr<nsIRDFLiteral> mimeLiteral;
nsAutoString mimeType; mimeType.AssignWithConversion(aContentType);
rv = rdf->GetLiteral( mimeType.get(), getter_AddRefs( mimeLiteral ) );
NS_ENSURE_SUCCESS(rv, rv);
PRBool exists = PR_FALSE;
rv = mOverRideDataSource->HasAssertion(contentTypeNodeResource, kNC_Value, mimeLiteral, PR_TRUE, &exists );
if (NS_SUCCEEDED(rv) && exists)
{
// create a mime info object and we'll fill it in based on the values from the data source
nsCOMPtr<nsIMIMEInfo> mimeInfo (do_CreateInstance(NS_MIMEINFO_CONTRACTID));
rv = FillTopLevelProperties(aContentType, contentTypeNodeResource, rdf, mimeInfo);
NS_ENSURE_SUCCESS(rv, rv);
rv = FillContentHandlerProperties(aContentType, contentTypeNodeResource, rdf, mimeInfo);
*aMIMEInfo = mimeInfo;
NS_IF_ADDREF(*aMIMEInfo);
} // if we have a node in the graph for this content type
else
*aMIMEInfo = nsnull;
} // if we have a data source
else
rv = NS_ERROR_FAILURE;
return rv;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// begin external protocol service default implementation...
//////////////////////////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP nsExternalHelperAppService::ExternalProtocolHandlerExists(const char * aProtocolScheme,
PRBool * aHandlerExists)
{
// this method should only be implemented by each OS specific implementation of this service.
*aHandlerExists = PR_FALSE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsExternalHelperAppService::LoadUrl(nsIURI * aURL)
{
// this method should only be implemented by each OS specific implementation of this service.
return NS_ERROR_NOT_IMPLEMENTED;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// Methods related to deleting temporary files on exit
//////////////////////////////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP nsExternalHelperAppService::DeleteTemporaryFileOnExit(nsIFile * aTemporaryFile)
{
nsresult rv = NS_OK;
PRBool isFile = PR_FALSE;
nsCOMPtr<nsILocalFile> localFile (do_QueryInterface(aTemporaryFile, &rv));
NS_ENSURE_SUCCESS(rv, rv);
// as a safety measure, make sure the nsIFile is really a file and not a directory object.
localFile->IsFile(&isFile);
if (!isFile) return NS_OK;
if (!mTemporaryFilesList)
rv = NS_NewISupportsArray(getter_AddRefs(mTemporaryFilesList));
NS_ENSURE_SUCCESS(rv, rv);
mTemporaryFilesList->AppendElement(localFile);
return NS_OK;
}
nsresult nsExternalHelperAppService::ExpungeTemporaryFiles()
{
if (!mTemporaryFilesList) return NS_OK;
nsresult rv = NS_OK;
PRUint32 numEntries = 0;
mTemporaryFilesList->Count(&numEntries);
nsCOMPtr<nsISupports> element;
nsCOMPtr<nsILocalFile> localFile;
for (PRUint32 index = 0; index < numEntries; index ++)
{
element = getter_AddRefs(mTemporaryFilesList->ElementAt(index));
if (element)
{
localFile = do_QueryInterface(element);
if (localFile)
localFile->Remove(PR_FALSE);
}
}
mTemporaryFilesList->Clear();
return NS_OK;
}
/* XPCOM Shutdown observer */
NS_IMETHODIMP
nsExternalHelperAppService::Observe(nsISupports *aSubject, const PRUnichar *aTopic, const PRUnichar *someData )
{
// we must be shutting down xpcom so remove our temporary files...
ExpungeTemporaryFiles();
nsresult rv = NS_OK;
nsCOMPtr<nsIObserverService> obs = do_GetService(NS_OBSERVERSERVICE_CONTRACTID, &rv);
if (obs)
rv = obs->RemoveObserver(NS_STATIC_CAST(nsIObserver*, this), NS_LITERAL_STRING(NS_XPCOM_SHUTDOWN_OBSERVER_ID).get());
return NS_OK;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// begin external app handler implementation
//////////////////////////////////////////////////////////////////////////////////////////////////////
NS_IMPL_THREADSAFE_ADDREF(nsExternalAppHandler)
NS_IMPL_THREADSAFE_RELEASE(nsExternalAppHandler)
NS_INTERFACE_MAP_BEGIN(nsExternalAppHandler)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
NS_INTERFACE_MAP_ENTRY(nsIHelperAppLauncher)
NS_INTERFACE_MAP_ENTRY(nsIURIContentListener)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_END_THREADSAFE
nsExternalAppHandler::nsExternalAppHandler()
{
NS_INIT_ISUPPORTS();
mCanceled = PR_FALSE;
mReceivedDispostionInfo = PR_FALSE;
mStopRequestIssued = PR_FALSE;
mDataBuffer = (char *) nsMemory::Alloc((sizeof(char) * DATA_BUFFER_SIZE));
mProgressWindowCreated = PR_FALSE;
}
nsExternalAppHandler::~nsExternalAppHandler()
{
if (mDataBuffer)
nsMemory::Free(mDataBuffer);
}
NS_IMETHODIMP nsExternalAppHandler::GetInterface(const nsIID & aIID, void * *aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
return QueryInterface(aIID, aInstancePtr);
}
NS_IMETHODIMP nsExternalAppHandler::SetWebProgressListener(nsIWebProgressListener * aWebProgressListener)
{
// this call back means we've succesfully brought up the
// progress window so set the appropriate flag...
mProgressWindowCreated = PR_TRUE;
// while we were bringing up the progress dialog, we actually finished processing the
// url. If that's the case then mStopRequestIssued will be true. Tell the dialog to go away in that
// case and we need to execute the operation since we are actually done.
if (mStopRequestIssued && aWebProgressListener)
{
// simulate a notification saying the document is done. This will turn around and cause our
// progress dialog to go away....
aWebProgressListener->OnStateChange(nsnull, nsnull, nsIWebProgressListener::STATE_STOP, NS_OK);
return ExecuteDesiredAction();
}
// o.t. go ahead and register the progress listener....
if (mLoadCookie)
{
nsCOMPtr<nsIWebProgress> webProgress(do_QueryInterface(mLoadCookie));
if (webProgress)
{
mWebProgressListener = aWebProgressListener;
webProgress->AddProgressListener(mWebProgressListener);
}
}
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::GetDownloadInfo(nsIURI ** aSourceUrl, PRInt64 * aTimeDownloadStarted, nsIFile ** aTarget)
{
*aTimeDownloadStarted = mTimeDownloadStarted;
if (mFinalFileDestination)
{
*aTarget = mFinalFileDestination;
}
else
*aTarget = mTempFile;
NS_IF_ADDREF(*aTarget);
*aSourceUrl = mSourceUrl;
NS_IF_ADDREF(*aSourceUrl);
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::CloseProgressWindow()
{
// make our docloader release the progress listener from the progress window...
if (mLoadCookie && mWebProgressListener)
{
nsCOMPtr<nsIWebProgress> webProgress(do_QueryInterface(mLoadCookie));
if (webProgress)
{
webProgress->RemoveProgressListener(mWebProgressListener);
}
}
// release extra state...
mWebProgressListener = nsnull;
mLoadCookie = nsnull;
return NS_OK;
}
void nsExternalAppHandler::ExtractSuggestedFileNameFromChannel(nsIChannel* aChannel)
{
// if the channel is an http channel and we have a content disposition header set,
// then use the file name suggested there as the preferred file name to SUGGEST to the user.
// we shouldn't actually use that without their permission...o.t. just use our temp file
// Try to get HTTP channel....if we have a content-disposition header then we can
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface( aChannel );
if ( httpChannel )
{
// Get content-disposition response header and extract a file name if there is one...
// content-disposition: has format: disposition-type < ; filename=value >
nsXPIDLCString disp;
nsresult rv = httpChannel->GetResponseHeader( "content-disposition", getter_Copies( disp ) );
if ( NS_SUCCEEDED( rv ) && disp )
{
nsCAutoString dispositionValue;
dispositionValue = disp;
PRInt32 pos = dispositionValue.Find("filename=", PR_TRUE);
if (pos > 0)
{
// extract everything after the filename= part and treat that as the file name...
nsCAutoString dispFileName;
dispositionValue.Mid(dispFileName, pos + nsCRT::strlen("filename="), -1);
if (!dispFileName.IsEmpty()) // if we got a file name back..
{
pos = dispFileName.FindChar(';', PR_TRUE);
if (pos > 0)
dispFileName.Truncate(pos);
// According to RFC 2183, filename can be given as filename=value,
// where value is token or quoted-string. See bug 66181.
dispFileName.StripChar('"');
// ONLY if we got here, will we remember the suggested file name...
mSuggestedFileName.AssignWithConversion(dispFileName);
}
} // if we found a file name in the header disposition field
} // we had a disp header
} // if we had an http channel
}
nsresult nsExternalAppHandler::RetargetLoadNotifications(nsIRequest *request)
{
// we are going to run the downloading of the helper app in our own little docloader / load group context.
// so go ahead and force the creation of a load group and doc loader for us to use...
nsresult rv = NS_OK;
nsCOMPtr<nsIChannel> aChannel = do_QueryInterface(request);
NS_ENSURE_TRUE(aChannel, NS_ERROR_FAILURE);
nsCOMPtr<nsIURILoader> uriLoader(do_GetService(NS_URI_LOADER_CONTRACTID));
NS_ENSURE_TRUE(uriLoader, NS_ERROR_FAILURE);
nsCOMPtr<nsILoadGroup> newLoadGroup;
nsCOMPtr<nsILoadGroup> oldLoadGroup;
uriLoader->GetLoadGroupForContext(NS_STATIC_CAST(nsIURIContentListener*, this), getter_AddRefs(newLoadGroup));
aChannel->GetLoadGroup(getter_AddRefs(oldLoadGroup));
// we need to store off the original (pre redirect!) channel that initiated the load. We do
// this so later on, we can pass any refresh urls associated with the original channel back to the
// window context which started the whole process. More comments about that are listed below....
// HACK ALERT: it's pretty bogus that we are getting the document channel from the doc loader.
// ideally we should be able to just use mChannel (the channel we are extracting content from) or
// the default load channel associated with the original load group. Unfortunately because
// a redirect may have occurred, the doc loader is the only one with a ptr to the original channel
// which is what we really want....
nsCOMPtr<nsIDocumentLoader> origContextLoader;
uriLoader->GetDocumentLoaderForContext(mWindowContext, getter_AddRefs(origContextLoader));
if (origContextLoader)
origContextLoader->GetDocumentChannel(getter_AddRefs(mOriginalChannel));
if(oldLoadGroup)
oldLoadGroup->RemoveRequest(request, nsnull, NS_OK);
aChannel->SetLoadGroup(newLoadGroup);
nsCOMPtr<nsIInterfaceRequestor> req (do_QueryInterface(mLoadCookie));
aChannel->SetNotificationCallbacks(req);
rv = newLoadGroup->AddRequest(request, nsnull);
return rv;
}
#define SALT_SIZE 8
#define TABLE_SIZE 36
const char table[] =
{ 'a','b','c','d','e','f','g','h','i','j',
'k','l','m','n','o','p','q','r','s','t',
'u','v','w','x','y','z','0','1','2','3',
'4','5','6','7','8','9'};
nsresult nsExternalAppHandler::SetUpTempFile(nsIChannel * aChannel)
{
nsresult rv = NS_OK;
#ifdef XP_MAC
// create a temp file for the data...and open it for writing.
// use NS_MAC_DEFAULT_DOWNLOAD_DIR which gets download folder from InternetConfig
// if it can't get download folder pref, then it uses desktop folder
NS_GetSpecialDirectory(NS_MAC_DEFAULT_DOWNLOAD_DIR, getter_AddRefs(mTempFile));
// while we're here, also set Mac type and creator
if (mMimeInfo)
{
nsCOMPtr<nsILocalFileMac> macfile = do_QueryInterface(mTempFile);
if (macfile)
{
PRUint32 type, creator;
mMimeInfo->GetMacType(&type);
mMimeInfo->GetMacCreator(&creator);
macfile->SetFileTypeAndCreator(type, creator);
}
}
#else
// create a temp file for the data...and open it for writing.
NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(mTempFile));
#endif
nsCOMPtr<nsIURI> uri;
aChannel->GetURI(getter_AddRefs(mSourceUrl));
nsCOMPtr<nsIURL> url = do_QueryInterface(mSourceUrl);
// We need to do two things here, (1) extract the file name that's part of the url
// and store this is as mSuggestedfileName. This way, when we show the user a file picker,
// we can have it pre filled with the suggested file name.
// (2) We need to generate a name for the temp file that we are going to be streaming data to.
// We don't want this name to be predictable for security reasons so we are going to generate a
// "salted" name.....
if (url)
{
// try to extract the file name from the url and use that as a first pass as the
// leaf name of our temp file...
nsXPIDLCString leafName;
url->GetFileName(getter_Copies(leafName));
if (leafName.get())
{
nsCOMPtr<nsIIOService> ioService (do_GetService(kIOServiceCID, &rv));
if (NS_SUCCEEDED(rv))
{
nsXPIDLCString unescapedFileName;
rv = ioService->Unescape(leafName.get(), getter_Copies(unescapedFileName));
mSuggestedFileName.Assign(NS_ConvertUTF8toUCS2(unescapedFileName));
}
else
mSuggestedFileName.AssignWithConversion(leafName);
}
}
// step (2), generate a salted file name for the temp file....
nsCAutoString saltedTempLeafName;
// this salting code was ripped directly from the profile manager.
// turn PR_Now() into milliseconds since epoch 1058 // and salt rand with that.
double fpTime;
LL_L2D(fpTime, PR_Now());
srand((uint)(fpTime * 1e-6 + 0.5));
PRInt32 i;
for (i=0;i<SALT_SIZE;i++)
{
saltedTempLeafName.Append(table[(rand()%TABLE_SIZE)]);
}
// now append our extension.
saltedTempLeafName.Append(mTempFileExtension);
mTempFile->Append(saltedTempLeafName); // make this file unique!!!
mTempFile->CreateUnique(nsnull, nsIFile::NORMAL_FILE_TYPE, 0644);
NS_DEFINE_CID(kFileTransportServiceCID, NS_FILETRANSPORTSERVICE_CID);
nsCOMPtr<nsIFileTransportService> fts =
do_GetService(kFileTransportServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsITransport> fileTransport;
rv = fts->CreateTransport(mTempFile, PR_WRONLY | PR_CREATE_FILE, 0664, getter_AddRefs(fileTransport));
if (NS_FAILED(rv)) return rv;
rv = fileTransport->OpenOutputStream(0, -1, 0, getter_AddRefs(mOutStream));
#ifdef XP_MAC
nsXPIDLCString contentType;
mMimeInfo->GetMIMEType(getter_Copies(contentType));
if (contentType &&
(nsCRT::strcasecmp(contentType, APPLICATION_APPLEFILE) == 0) ||
(nsCRT::strcasecmp(contentType, MULTIPART_APPLEDOUBLE) == 0))
{
nsCOMPtr<nsIAppleFileDecoder> appleFileDecoder = do_CreateInstance(NS_IAPPLEFILEDECODER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv) && appleFileDecoder)
{
rv = appleFileDecoder->Initialize(mOutStream, mTempFile);
if (NS_SUCCEEDED(rv))
mOutStream = do_QueryInterface(appleFileDecoder, &rv);
}
}
#endif
return rv;
}
NS_IMETHODIMP nsExternalAppHandler::OnStartRequest(nsIRequest *request, nsISupports * aCtxt)
{
NS_ENSURE_ARG(request);
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return request->Cancel(NS_BINDING_ABORTED);
nsCOMPtr<nsIChannel> aChannel = do_QueryInterface(request);
nsresult rv = SetUpTempFile(aChannel);
// retarget all load notifcations to our docloader instead of the original window's docloader...
RetargetLoadNotifications(request);
// ignore failure...
ExtractSuggestedFileNameFromChannel(aChannel);
nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface( aChannel );
if ( httpChannel )
{
// Turn off content encoding conversions.
httpChannel->SetApplyConversion( PR_FALSE );
}
// now that the temp file is set up, find out if we need to invoke a dialog asking the user what
// they want us to do with this content...
PRBool alwaysAsk = PR_TRUE;
mMimeInfo->GetAlwaysAskBeforeHandling(&alwaysAsk);
if (alwaysAsk)
{
// do this first! make sure we don't try to take an action until the user tells us what they want to do
// with it...
mReceivedDispostionInfo = PR_FALSE;
// invoke the dialog!!!!! use mWindowContext as the window context parameter for the dialog request
mDialog = do_CreateInstance( NS_IHELPERAPPLAUNCHERDLG_CONTRACTID, &rv );
NS_ENSURE_SUCCESS(rv, rv);
rv = mDialog->Show( this, mWindowContext );
// what do we do if the dialog failed? I guess we should call Cancel and abort the load....
}
else
{
mReceivedDispostionInfo = PR_TRUE; // no need to wait for a response from the user
// We need to do the save/open immediately, then.
PRInt32 action = nsIMIMEInfo::saveToDisk;
mMimeInfo->GetPreferredAction( &action );
if ( action == nsIMIMEInfo::saveToDisk )
{
rv = SaveToDisk(nsnull, PR_FALSE);
}
else
{
rv = LaunchWithApplication(nsnull, PR_FALSE);
}
}
mTimeDownloadStarted = PR_Now();
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::OnDataAvailable(nsIRequest *request, nsISupports * aCtxt,
nsIInputStream * inStr, PRUint32 sourceOffset, PRUint32 count)
{
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return request->Cancel(NS_BINDING_ABORTED);
// read the data out of the stream and write it to the temp file.
if (mOutStream && mDataBuffer && count > 0)
{
PRUint32 numBytesRead = 0;
PRUint32 numBytesWritten = 0;
while (count > 0) // while we still have bytes to copy...
{
inStr->Read(mDataBuffer, PR_MIN(count, DATA_BUFFER_SIZE - 1), &numBytesRead);
if (count >= numBytesRead)
count -= numBytesRead; // subtract off the number of bytes we just read
else
count = 0;
mOutStream->Write(mDataBuffer, numBytesRead, &numBytesWritten);
}
}
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::OnStopRequest(nsIRequest *request, nsISupports *aCtxt,
nsresult aStatus)
{
mStopRequestIssued = PR_TRUE;
// first, check to see if we've been canceled....
if (mCanceled) // then go cancel our underlying channel too
return request->Cancel(NS_BINDING_ABORTED);
// go ahead and execute the application passing in our temp file as an argument
// this may involve us calling back into the OS external app service to make the call
// for actually launching the helper app. It'd be great if nsIFile::spawn could be made to work
// on the mac...right now the mac implementation ignores all arguments passed in.
// close the stream...
if (mOutStream)
{
mOutStream->Close();
mOutStream = nsnull;
}
return ExecuteDesiredAction();
}
nsresult nsExternalAppHandler::ExecuteDesiredAction()
{
nsresult rv = NS_OK;
if (mProgressWindowCreated && !mCanceled)
{
nsMIMEInfoHandleAction action = nsIMIMEInfo::saveToDisk;
mMimeInfo->GetPreferredAction(&action);
if (action == nsIMIMEInfo::saveToDisk)
rv = MoveFile(mFinalFileDestination);
else
rv = OpenWithApplication(nsnull);
}
return rv;
}
nsresult nsExternalAppHandler::Init(nsIMIMEInfo * aMIMEInfo, const char * aTempFileExtension, nsISupports * aWindowContext)
{
mWindowContext = aWindowContext;
mMimeInfo = aMIMEInfo;
// make sure the extention includes the '.'
if (aTempFileExtension && *aTempFileExtension != '.')
mTempFileExtension = ".";
mTempFileExtension.Append(aTempFileExtension);
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::GetMIMEInfo(nsIMIMEInfo ** aMIMEInfo)
{
*aMIMEInfo = mMimeInfo;
NS_IF_ADDREF(*aMIMEInfo);
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::GetSource(nsIURI ** aSourceURI)
{
NS_ENSURE_ARG(aSourceURI);
*aSourceURI = mSourceUrl;
NS_IF_ADDREF(*aSourceURI);
return NS_OK;
}
nsresult nsExternalAppHandler::ShowProgressDialog()
{
// we are back from the helper app dialog (where the user chooses to save or open), but we aren't
// done processing the load. in this case, throw up a progress dialog so the user can see what's going on...
nsresult rv = NS_OK;
if ( !mDialog ) {
// Get helper app launcher dialog.
mDialog = do_CreateInstance( NS_IHELPERAPPLAUNCHERDLG_CONTRACTID, &rv );
NS_ENSURE_SUCCESS(rv, rv);
}
rv = mDialog->ShowProgressDialog(this, mWindowContext);
return rv;
}
nsresult nsExternalAppHandler::PromptForSaveToFile(nsILocalFile ** aNewFile, const PRUnichar * aDefaultFile, const PRUnichar * aFileExtension)
{
// invoke the dialog!!!!! use mWindowContext as the window context parameter for the dialog request
// XXX Convert to use file picker?
nsresult rv = NS_OK;
if (!mDialog)
{
// Get helper app launcher dialog.
mDialog = do_CreateInstance( NS_IHELPERAPPLAUNCHERDLG_CONTRACTID, &rv );
NS_ENSURE_SUCCESS(rv, rv);
}
// we want to explicitly unescape aDefaultFile b4 passing into the dialog. we can't unescape
// it because the dialog is implemented by a JS component which doesn't have a window so no unescape routine is defined...
rv = mDialog->PromptForSaveToFile(mWindowContext, aDefaultFile, aFileExtension, aNewFile);
return rv;
}
nsresult nsExternalAppHandler::MoveFile(nsIFile * aNewFileLocation)
{
nsresult rv = NS_OK;
NS_ASSERTION(mStopRequestIssued, "uhoh, how did we get here if we aren't done getting data?");
nsCOMPtr<nsILocalFile> fileToUse = do_QueryInterface(aNewFileLocation);
// if the on stop request was actually issued then it's now time to actually perform the file move....
if (mStopRequestIssued && fileToUse)
{
// Unfortunately, MoveTo will fail if a file already exists at the user specified location....
// but the user has told us, this is where they want the file! (when we threw up the save to file dialog,
// it told them the file already exists and do they wish to over write it. So it should be okay to delete
// fileToUse if it already exists.
PRBool equalToTempFile = PR_FALSE;
PRBool filetoUseAlreadyExists = PR_FALSE;
fileToUse->Equals(mTempFile, &equalToTempFile);
fileToUse->Exists(&filetoUseAlreadyExists);
if (filetoUseAlreadyExists && !equalToTempFile)
fileToUse->Remove(PR_FALSE);
// extract the new leaf name from the file location
nsXPIDLCString fileName;
fileToUse->GetLeafName(getter_Copies(fileName));
nsCOMPtr<nsIFile> directoryLocation;
fileToUse->GetParent(getter_AddRefs(directoryLocation));
if (directoryLocation)
{
rv = mTempFile->MoveTo(directoryLocation, fileName);
}
}
return rv;
}
// SaveToDisk should only be called by the helper app dialog which allows
// the user to say launch with application or save to disk. It doesn't actually
// perform the save, it just prompts for the destination file name. The actual save
// won't happen until we are done downloading the content and are sure we've
// shown a progress dialog. This was done to simplify the
// logic that was showing up in this method. Internal callers who actually want
// to preform the save should call ::MoveFile
NS_IMETHODIMP nsExternalAppHandler::SaveToDisk(nsIFile * aNewFileLocation, PRBool aRememberThisPreference)
{
nsresult rv = NS_OK;
if (mCanceled)
return NS_OK;
mMimeInfo->SetPreferredAction(nsIMIMEInfo::saveToDisk);
if (!aNewFileLocation)
{
nsXPIDLString leafName;
nsCOMPtr<nsILocalFile> fileToUse;
mTempFile->GetUnicodeLeafName(getter_Copies(leafName));
if (mSuggestedFileName.IsEmpty())
rv = PromptForSaveToFile(getter_AddRefs(fileToUse), leafName, NS_ConvertASCIItoUCS2(mTempFileExtension).get());
else
{
nsAutoString fileExt;
PRInt32 pos = mSuggestedFileName.RFindChar(PRUnichar('.'));
if (pos >= 0)
mSuggestedFileName.Mid(fileExt, pos, -1);
if (fileExt.IsEmpty())
fileExt = NS_ConvertASCIItoUCS2(mTempFileExtension).get();
rv = PromptForSaveToFile(getter_AddRefs(fileToUse), mSuggestedFileName.get(), fileExt.get());
}
if (NS_FAILED(rv))
return Cancel();
mFinalFileDestination = do_QueryInterface(fileToUse);
if (!mProgressWindowCreated)
ShowProgressDialog();
// now that the user has chosen the file location to save to, it's okay to fire the refresh tag
// if there is one. We don't want to do this before the save as dialog goes away because this dialog
// is modal and we do bad things if you try to load a web page in the underlying window while a modal
// dialog is still up.
ProcessAnyRefreshTags();
}
mReceivedDispostionInfo = PR_TRUE;
return rv;
}
nsresult nsExternalAppHandler::OpenWithApplication(nsIFile * aApplication)
{
nsresult rv = NS_OK;
if (mCanceled)
return NS_OK;
// we only should have gotten here if the on stop request had been fired already.
NS_ASSERTION(mStopRequestIssued, "uhoh, how did we get here if we aren't done getting data?");
// if a stop request was already issued then proceed with launching the application.
if (mStopRequestIssued)
{
nsCOMPtr<nsPIExternalAppLauncher> helperAppService (do_GetService(NS_EXTERNALHELPERAPPSERVICE_CONTRACTID));
if (helperAppService)
{
rv = helperAppService->LaunchAppWithTempFile(mMimeInfo, mTempFile);
// be sure to add this temporary file to our list of files which need deleted on exit...
helperAppService->DeleteTemporaryFileOnExit(mTempFile);
}
}
return rv;
}
// LaunchWithApplication should only be called by the helper app dialog which allows
// the user to say launch with application or save to disk. It doesn't actually
// perform launch with application. That won't happen until we are done downloading
// the content and are sure we've showna progress dialog. This was done to simplify the
// logic that was showing up in this method.
NS_IMETHODIMP nsExternalAppHandler::LaunchWithApplication(nsIFile * aApplication, PRBool aRememberThisPreference)
{
if (mCanceled)
return NS_OK;
mMimeInfo->SetPreferredAction(nsIMIMEInfo::useHelperApp);
// launch the progress window now that the user has picked the desired action.
if (!mProgressWindowCreated)
ShowProgressDialog();
// user has chosen to launch using an application, fire any refresh tags now...
ProcessAnyRefreshTags();
mReceivedDispostionInfo = PR_TRUE;
if (mMimeInfo && aApplication)
mMimeInfo->SetPreferredApplicationHandler(aApplication);
return NS_OK;
}
NS_IMETHODIMP nsExternalAppHandler::Cancel()
{
mCanceled = PR_TRUE;
// shutdown our stream to the temp file
if (mOutStream)
{
mOutStream->Close();
mOutStream = nsnull;
}
// clean up after ourselves and delete the temp file...
if (mTempFile)
{
mTempFile->Remove(PR_TRUE);
mTempFile = nsnull;
}
return NS_OK;
}
void nsExternalAppHandler::ProcessAnyRefreshTags()
{
// one last thing, try to see if the original window context supports a refresh interface...
// Sometimes, when you download content that requires an external handler, there is
// a refresh header associated with the download. This refresh header points to a page
// the content provider wants the user to see after they download the content. How do we
// pass this refresh information back to the caller? For now, try to get the refresh URI
// interface. If the window context where the request originated came from supports this
// then we can force it to process the refresh information (if there is any) from this channel.
if (mWindowContext && mOriginalChannel)
{
nsCOMPtr<nsIRefreshURI> refreshHandler (do_GetInterface(mWindowContext));
if (refreshHandler)
refreshHandler->SetupRefreshURI(mOriginalChannel);
mOriginalChannel = nsnull;
}
}
// nsIURIContentListener implementation
NS_IMETHODIMP
nsExternalAppHandler::OnStartURIOpen(nsIURI* aURI, PRBool* aAbortOpen)
{
return NS_OK;
}
NS_IMETHODIMP
nsExternalAppHandler::GetProtocolHandler(nsIURI *aURI,
nsIProtocolHandler **aProtocolHandler)
{
*aProtocolHandler = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsExternalAppHandler::IsPreferred(const char * aContentType,
nsURILoadCommand aCommand,
char ** aDesiredContentType,
PRBool * aCanHandleContent)
{
NS_NOTREACHED("IsPreferred");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsExternalAppHandler::CanHandleContent(const char * aContentType,
nsURILoadCommand aCommand,
char ** aDesiredContentType,
PRBool * aCanHandleContent)
{
NS_NOTREACHED("CanHandleContent");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsExternalAppHandler::DoContent(const char * aContentType,
nsURILoadCommand aCommand,
nsIRequest * aRequest,
nsIStreamListener ** aContentHandler,
PRBool * aAbortProcess)
{
NS_NOTREACHED("DoContent");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsExternalAppHandler::GetParentContentListener(nsIURIContentListener** aParent)
{
*aParent = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsExternalAppHandler::SetParentContentListener(nsIURIContentListener* aParent)
{
return NS_OK;
}
NS_IMETHODIMP
nsExternalAppHandler::GetLoadCookie(nsISupports ** aLoadCookie)
{
*aLoadCookie = mLoadCookie;
NS_IF_ADDREF(*aLoadCookie);
return NS_OK;
}
NS_IMETHODIMP
nsExternalAppHandler::SetLoadCookie(nsISupports * aLoadCookie)
{
mLoadCookie = aLoadCookie;
return NS_OK;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
// The following section contains our nsIMIMEService implementation and related methods.
//
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
// nsIMIMEService methods
NS_IMETHODIMP nsExternalHelperAppService::GetFromExtension(const char *aFileExt, nsIMIMEInfo **_retval)
{
nsresult rv = NS_OK;
nsCAutoString fileExt(aFileExt);
if (fileExt.IsEmpty()) return NS_ERROR_FAILURE;
fileExt.ToLowerCase();
// if the file extension contains a '.', our hash key doesn't include the '.'
// so skip over it...
if (fileExt.First() == '.')
fileExt.Cut(0, 1); // cut the '.'
nsCStringKey key(fileExt.get());
*_retval = (nsIMIMEInfo *) mMimeInfoCache->Get(&key);
NS_IF_ADDREF(*_retval);
if (!*_retval) rv = NS_ERROR_FAILURE;
return rv;
}
NS_IMETHODIMP nsExternalHelperAppService::GetFromMIMEType(const char *aMIMEType, nsIMIMEInfo **_retval)
{
nsresult rv = NS_OK;
nsCAutoString MIMEType(aMIMEType);
MIMEType.ToLowerCase();
nsCStringKey key(MIMEType.get());
*_retval = (nsIMIMEInfo *) mMimeInfoCache->Get(&key);
NS_IF_ADDREF(*_retval);
// if we don't have a match in our hash table, then query the user provided
// data source containing additional content types...
if (!*_retval)
rv = GetMIMEInfoForMimeTypeFromDS(aMIMEType, _retval);
// if we still don't have a match, then we give up, we don't know anything about it...
// return an error.
if (!*_retval) rv = NS_ERROR_FAILURE;
return rv;
}
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromExtension(const char *aFileExt, char **aContentType)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIMIMEInfo> info;
rv = GetFromExtension(aFileExt, getter_AddRefs(info));
if (NS_FAILED(rv)) {
/* Try the plugins */
const char* mimeType;
nsCOMPtr<nsIPluginHost> pluginHost (do_GetService(kPluginManagerCID, &rv));
if (NS_SUCCEEDED(rv)) {
if (pluginHost->IsPluginEnabledForExtension(aFileExt, mimeType) == NS_OK)
{
*aContentType = nsCRT::strdup(mimeType);
rv = NS_OK;
return rv;
}
else
{
rv = NS_ERROR_FAILURE;
}
}
}
if (NS_FAILED(rv)) {
return rv;
} /* endif */
return info->GetMIMEType(aContentType);
}
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromURI(nsIURI *aURI, char **aContentType)
{
nsresult rv = NS_ERROR_FAILURE;
// first try to get a url out of the uri so we can skip post
// filename stuff (i.e. query string)
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI, &rv);
#ifdef XP_MAC
if (NS_SUCCEEDED(rv))
{
nsXPIDLCString fileExt;
url->GetFileExtension(getter_Copies(fileExt));
nsresult rv2;
nsCOMPtr<nsIFileURL> fileurl = do_QueryInterface( url, &rv2 );
if ( NS_SUCCEEDED ( rv2 ) )
{
nsCOMPtr <nsIFile> file;
rv2 = fileurl->GetFile( getter_AddRefs( file ) );
if ( NS_SUCCEEDED( rv2 ) )
{
rv2 = GetTypeFromFile( file, aContentType );
if( NS_SUCCEEDED ( rv2 ) )
return rv2;
}
}
}
#endif
if (NS_SUCCEEDED(rv))
{
nsXPIDLCString ext;
rv = url->GetFileExtension(getter_Copies(ext));
if (NS_FAILED(rv)) return rv;
rv = GetTypeFromExtension(ext, aContentType);
return rv;
}
nsXPIDLCString cStrSpec;
// no url, let's give the raw spec a shot
rv = aURI->GetSpec(getter_Copies(cStrSpec));
if (NS_FAILED(rv)) return rv;
nsAutoString specStr; specStr.AssignWithConversion(cStrSpec);
// find the file extension (if any)
nsAutoString extStr;
PRInt32 extLoc = specStr.RFindChar('.');
if (-1 != extLoc)
{
specStr.Right(extStr, specStr.Length() - extLoc - 1);
char *ext = extStr.ToNewCString();
if (!ext) return NS_ERROR_OUT_OF_MEMORY;
rv = GetTypeFromExtension(ext, aContentType);
nsMemory::Free(ext);
}
else
return NS_ERROR_FAILURE;
return rv;
}
NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromFile( nsIFile* aFile, char **aContentType )
{
nsresult rv;
nsCOMPtr<nsIMIMEInfo> info;
// Get the Extension
char* fileName;
const char* ext = nsnull;
rv = aFile->GetLeafName(&fileName);
if (NS_FAILED(rv)) return rv;
if (fileName != nsnull)
{
PRInt32 len = nsCRT::strlen(fileName);
for (PRInt32 i = len; i >= 0; i--)
{
if (fileName[i] == '.')
{
ext = &fileName[i + 1];
break;
}
}
}
nsCString fileExt( ext );
nsCRT::free(fileName);
// Handle the mac case
#ifdef XP_MAC
nsCOMPtr<nsILocalFileMac> macFile;
macFile = do_QueryInterface( aFile, &rv );
if ( NS_SUCCEEDED( rv ) && fileExt.IsEmpty())
{
PRUint32 type, creator;
macFile->GetFileTypeAndCreator( (OSType*)&type,(OSType*) &creator );
nsCOMPtr<nsIInternetConfigService> icService (do_GetService(NS_INTERNETCONFIGSERVICE_CONTRACTID));
if (icService)
{
rv = icService->GetMIMEInfoFromTypeCreator(type, creator, fileExt, getter_AddRefs(info));
if ( NS_SUCCEEDED( rv) )
return info->GetMIMEType(aContentType);
}
}
#endif
// Windows, unix and mac when no type match occured.
if (fileExt.IsEmpty())
return NS_ERROR_FAILURE;
return GetTypeFromExtension( fileExt, aContentType );
}
nsresult nsExternalHelperAppService::GetMIMEInfoForMimeTypeFromExtras(const char * aContentType, nsIMIMEInfo ** aMIMEInfo )
{
nsresult rv = NS_OK;
NS_ENSURE_ARG( aMIMEInfo );
*aMIMEInfo = 0;
// Look for default entry with matching mime type.
nsCAutoString MIMEType(aContentType);
MIMEType.ToLowerCase();
PRInt32 numEntries = sizeof(extraMimeEntries) / sizeof(extraMimeEntries[0]);
for (PRInt32 index = 0; !*aMIMEInfo && index < numEntries; index++)
{
if ( MIMEType == extraMimeEntries[index].mMimeType ) {
// This is the one. Create MIMEInfo object and set attributes appropriately.
nsCOMPtr<nsIMIMEInfo> mimeInfo (do_CreateInstance(NS_MIMEINFO_CONTRACTID,&rv));
NS_ENSURE_SUCCESS( rv, rv );
mimeInfo->SetFileExtensions(extraMimeEntries[index].mFileExtensions);
mimeInfo->SetMIMEType(extraMimeEntries[index].mMimeType);
mimeInfo->SetDescription(NS_ConvertASCIItoUCS2(extraMimeEntries[index].mDescription).get());
mimeInfo->SetMacType(extraMimeEntries[index].mMactype);
mimeInfo->SetMacCreator(extraMimeEntries[index].mMacCreator);
*aMIMEInfo = mimeInfo;
}
}
return rv;
}
nsresult nsExternalHelperAppService::AddDefaultMimeTypesToCache()
{
PRInt32 numEntries = sizeof(defaultMimeEntries) / sizeof(defaultMimeEntries[0]);
for (PRInt32 index = 0; index < numEntries; index++)
{
// create a mime info object for each default mime entry and add it to our cache
nsCOMPtr<nsIMIMEInfo> mimeInfo (do_CreateInstance(NS_MIMEINFO_CONTRACTID));
mimeInfo->SetFileExtensions(defaultMimeEntries[index].mFileExtensions);
mimeInfo->SetMIMEType(defaultMimeEntries[index].mMimeType);
mimeInfo->SetDescription(NS_ConvertASCIItoUCS2(defaultMimeEntries[index].mDescription).get());
mimeInfo->SetMacType(defaultMimeEntries[index].mMactype);
mimeInfo->SetMacCreator(defaultMimeEntries[index].mMacCreator);
AddMimeInfoToCache(mimeInfo);
}
return NS_OK;
}
nsresult nsExternalHelperAppService::AddMimeInfoToCache(nsIMIMEInfo * aMIMEInfo)
{
NS_ENSURE_ARG(aMIMEInfo);
nsresult rv = NS_OK;
// Next add the new root MIME mapping.
nsXPIDLCString mimeType;
aMIMEInfo->GetMIMEType(getter_Copies(mimeType));
nsCStringKey key(mimeType);
nsIMIMEInfo * oldInfo = (nsIMIMEInfo*)mMimeInfoCache->Put(&key, aMIMEInfo);
// add a reference for the hash table entry....
NS_ADDREF(aMIMEInfo);
// now we need to add entries for each file extension
char** extensions;
PRUint32 count;
rv = aMIMEInfo->GetFileExtensions(&count, &extensions );
if (NS_FAILED(rv)) return NS_OK;
for ( PRUint32 i = 0; i < count; i++ )
{
key = extensions[i];
oldInfo = (nsIMIMEInfo*) mMimeInfoCache->Put(&key, aMIMEInfo);
NS_ADDREF(aMIMEInfo); // addref this new entry in the table
nsMemory::Free( extensions[i] );
}
nsMemory::Free( extensions );
return NS_OK;
}
// static helper function to help us release hash table entries...
static PRBool DeleteEntry(nsHashKey *aKey, void *aData, void* closure)
{
nsIMIMEInfo *entry = (nsIMIMEInfo*) aData;
NS_RELEASE(entry);
return PR_TRUE;
};
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