pjs/uriloader/exthandler/nsMIMEInfoImpl.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
* 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/
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*
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
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*
* 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.
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* Contributor(s):
*
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* ***** END LICENSE BLOCK ***** */
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#include "nsMIMEInfoImpl.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsStringEnumerator.h"
#include "nsIProcess.h"
#include "nsILocalFile.h"
#include "nsIFileURL.h"
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// nsISupports methods
NS_IMPL_THREADSAFE_ADDREF(nsMIMEInfoBase)
NS_IMPL_THREADSAFE_RELEASE(nsMIMEInfoBase)
NS_INTERFACE_MAP_BEGIN(nsMIMEInfoBase)
NS_INTERFACE_MAP_ENTRY(nsIHandlerInfo)
// This is only an nsIMIMEInfo if it's a MIME handler.
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMIMEInfo, mClass == eMIMEInfo)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIHandlerInfo)
NS_INTERFACE_MAP_END_THREADSAFE
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// nsMIMEInfoImpl methods
// Constructors for a MIME handler.
nsMIMEInfoBase::nsMIMEInfoBase(const char *aMIMEType) :
mMacType(0),
mMacCreator(0),
mType(aMIMEType),
mClass(eMIMEInfo),
mPreferredAction(nsIMIMEInfo::saveToDisk),
mAlwaysAskBeforeHandling(PR_TRUE)
{
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}
nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aMIMEType) :
mMacType(0),
mMacCreator(0),
mType(aMIMEType),
mClass(eMIMEInfo),
mPreferredAction(nsIMIMEInfo::saveToDisk),
mAlwaysAskBeforeHandling(PR_TRUE)
{
}
// Constructor for a handler that lets the caller specify whether this is a
// MIME handler or a protocol handler. In the long run, these will be distinct
// classes (f.e. nsMIMEInfo and nsProtocolInfo), but for now we reuse this class
// for both and distinguish between the two kinds of handlers via the aClass
// argument to this method, which can be either eMIMEInfo or eProtocolInfo.
nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass) :
mMacType(0),
mMacCreator(0),
mType(aType),
mClass(aClass),
mPreferredAction(nsIMIMEInfo::saveToDisk),
mAlwaysAskBeforeHandling(PR_TRUE)
{
}
nsMIMEInfoBase::~nsMIMEInfoBase()
{
}
NS_IMETHODIMP
nsMIMEInfoBase::GetFileExtensions(nsIUTF8StringEnumerator** aResult)
{
return NS_NewUTF8StringEnumerator(aResult, &mExtensions, this);
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}
NS_IMETHODIMP
nsMIMEInfoBase::ExtensionExists(const nsACString& aExtension, PRBool *_retval)
{
NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
PRBool found = PR_FALSE;
PRUint32 extCount = mExtensions.Count();
if (extCount < 1) return NS_OK;
for (PRUint8 i=0; i < extCount; i++) {
nsCString* ext = (nsCString*)mExtensions.CStringAt(i);
if (ext->Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
found = PR_TRUE;
break;
}
}
*_retval = found;
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return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetPrimaryExtension(nsACString& _retval)
{
PRUint32 extCount = mExtensions.Count();
if (extCount < 1) return NS_ERROR_NOT_INITIALIZED;
_retval = *(mExtensions.CStringAt(0));
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetPrimaryExtension(const nsACString& aExtension)
{
NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
PRUint32 extCount = mExtensions.Count();
PRUint8 i;
PRBool found = PR_FALSE;
for (i=0; i < extCount; i++) {
nsCString* ext = (nsCString*)mExtensions.CStringAt(i);
if (ext->Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
found = PR_TRUE;
break;
}
}
if (found) {
mExtensions.RemoveCStringAt(i);
}
mExtensions.InsertCStringAt(aExtension, 0);
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::AppendExtension(const nsACString& aExtension)
{
mExtensions.AppendCString(aExtension);
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetType(nsACString& aType)
{
if (mType.IsEmpty())
return NS_ERROR_NOT_INITIALIZED;
aType = mType;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetMIMEType(nsACString& aMIMEType)
{
if (mType.IsEmpty())
return NS_ERROR_NOT_INITIALIZED;
aMIMEType = mType;
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return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetDescription(nsAString& aDescription)
{
aDescription = mDescription;
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return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetDescription(const nsAString& aDescription)
{
mDescription = aDescription;
return NS_OK;
}
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NS_IMETHODIMP
nsMIMEInfoBase::Equals(nsIMIMEInfo *aMIMEInfo, PRBool *_retval)
{
if (!aMIMEInfo) return NS_ERROR_NULL_POINTER;
nsCAutoString type;
nsresult rv = aMIMEInfo->GetMIMEType(type);
if (NS_FAILED(rv)) return rv;
*_retval = mType.Equals(type);
return NS_OK;
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}
NS_IMETHODIMP
nsMIMEInfoBase::GetMacType(PRUint32 *aMacType)
{
*aMacType = mMacType;
if (!mMacType)
return NS_ERROR_NOT_INITIALIZED;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetMacType(PRUint32 aMacType)
{
mMacType = aMacType;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetMacCreator(PRUint32 *aMacCreator)
{
*aMacCreator = mMacCreator;
if (!mMacCreator)
return NS_ERROR_NOT_INITIALIZED;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetMacCreator(PRUint32 aMacCreator)
{
mMacCreator = aMacCreator;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetFileExtensions(const nsACString& aExtensions)
{
mExtensions.Clear();
nsCString extList( aExtensions );
PRInt32 breakLocation = -1;
while ( (breakLocation= extList.FindChar(',') )!= -1)
{
mExtensions.AppendCString(Substring(extList.get(), extList.get() + breakLocation));
extList.Cut(0, breakLocation+1 );
}
if ( !extList.IsEmpty() )
mExtensions.AppendCString( extList );
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetDefaultDescription(nsAString& aDefaultDescription)
{
aDefaultDescription = mDefaultAppDescription;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetPreferredApplicationHandler(nsIHandlerApp ** aPreferredAppHandler)
{
*aPreferredAppHandler = mPreferredApplication;
NS_IF_ADDREF(*aPreferredAppHandler);
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetPreferredApplicationHandler(nsIHandlerApp * aPreferredAppHandler)
{
mPreferredApplication = aPreferredAppHandler;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetPreferredAction(nsHandlerInfoAction * aPreferredAction)
{
*aPreferredAction = mPreferredAction;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetPreferredAction(nsHandlerInfoAction aPreferredAction)
{
mPreferredAction = aPreferredAction;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::GetAlwaysAskBeforeHandling(PRBool * aAlwaysAsk)
{
*aAlwaysAsk = mAlwaysAskBeforeHandling;
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoBase::SetAlwaysAskBeforeHandling(PRBool aAlwaysAsk)
{
mAlwaysAskBeforeHandling = aAlwaysAsk;
return NS_OK;
}
/* static */
nsresult
nsMIMEInfoBase::GetLocalFileFromURI(nsIURI *aURI, nsILocalFile **aFile)
{
nsresult rv;
nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIFile> file;
rv = fileUrl->GetFile(getter_AddRefs(file));
if (NS_FAILED(rv)) return rv;
return CallQueryInterface(file, aFile);
}
NS_IMETHODIMP
nsMIMEInfoBase::LaunchWithURI(nsIURI* aURI)
{
nsCOMPtr<nsILocalFile> docToLoad;
nsresult rv;
if (mPreferredAction == useHelperApp) {
if (!mPreferredApplication)
return NS_ERROR_FILE_NOT_FOUND;
// check for and possibly launch with web application
nsCOMPtr<nsIWebHandlerApp> webHandler =
do_QueryInterface(mPreferredApplication, &rv);
if (NS_SUCCEEDED(rv)) {
return LaunchWithWebHandler(webHandler, aURI);
}
// ok, we must have a local handler app
nsCOMPtr<nsILocalHandlerApp> localHandler =
do_QueryInterface(mPreferredApplication, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> executable;
rv = localHandler->GetExecutable(getter_AddRefs(executable));
NS_ENSURE_SUCCESS(rv, rv);
// get the nsILocalFile version of the doc to launch with
rv = GetLocalFileFromURI(aURI, getter_AddRefs(docToLoad));
if (NS_FAILED(rv)) {
// If we don't have a file, we must be a protocol handler
NS_ASSERTION(mClass == eProtocolInfo,
"nsMIMEInfoBase should be a protocol handler");
// so pass the entire URI to the handler.
nsCAutoString spec;
aURI->GetSpec(spec);
return LaunchWithIProcess(executable, spec);
}
// note that the file pointed to by docToLoad could possibly have
// originated as a file: URI if we're in some non-browser application.
nsCAutoString path;
docToLoad->GetNativePath(path);
return LaunchWithIProcess(executable, path);
}
else if (mPreferredAction == useSystemDefault) {
if (mClass == eProtocolInfo)
return LoadUriInternal(aURI);
rv = GetLocalFileFromURI(aURI, getter_AddRefs(docToLoad));
NS_ENSURE_SUCCESS(rv, rv);
return LaunchDefaultWithFile(docToLoad);
}
return NS_ERROR_INVALID_ARG;
}
void
nsMIMEInfoBase::CopyBasicDataTo(nsMIMEInfoBase* aOther)
{
aOther->mType = mType;
aOther->mDefaultAppDescription = mDefaultAppDescription;
aOther->mExtensions = mExtensions;
aOther->mMacType = mMacType;
aOther->mMacCreator = mMacCreator;
}
/* static */
nsresult
nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg)
{
NS_ASSERTION(aApp, "Unexpected null pointer, fix caller");
nsresult rv;
nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID, &rv);
if (NS_FAILED(rv))
return rv;
if (NS_FAILED(rv = process->Init(aApp)))
return rv;
const char *string = aArg.get();
PRUint32 pid;
return process->Run(PR_FALSE, &string, 1, &pid);
}
/* static */
nsresult
nsMIMEInfoBase::LaunchWithWebHandler(nsIWebHandlerApp *aApp, nsIURI *aURI)
{
// we'll be implementing this Real Soon Now!
return NS_ERROR_NOT_IMPLEMENTED;
}
// nsMIMEInfoImpl implementation
NS_IMETHODIMP
nsMIMEInfoImpl::GetDefaultDescription(nsAString& aDefaultDescription)
{
if (mDefaultAppDescription.IsEmpty() && mDefaultApplication) {
// Don't want to cache this, just in case someone resets the app
// without changing the description....
mDefaultApplication->GetLeafName(aDefaultDescription);
} else {
aDefaultDescription = mDefaultAppDescription;
}
return NS_OK;
}
NS_IMETHODIMP
nsMIMEInfoImpl::GetHasDefaultHandler(PRBool * _retval)
{
*_retval = !mDefaultAppDescription.IsEmpty();
if (mDefaultApplication) {
PRBool exists;
*_retval = NS_SUCCEEDED(mDefaultApplication->Exists(&exists)) && exists;
}
return NS_OK;
}
nsresult
nsMIMEInfoImpl::LaunchDefaultWithFile(nsIFile* aFile)
{
if (!mDefaultApplication)
return NS_ERROR_FILE_NOT_FOUND;
nsCAutoString nativePath;
aFile->GetNativePath(nativePath);
return LaunchWithIProcess(mDefaultApplication, nativePath);
}