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0f56acaf26
This macro is identical to NS_INTERFACE_MAP_END and encourages the reader to think that there's something extra-special threadsafe about QI implementations that use the macro, when in reality there's nothing of the sort.
431 lines
10 KiB
C++
431 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMIMEInfoImpl.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsStringEnumerator.h"
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#include "nsIFile.h"
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#include "nsIFileURL.h"
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#include "nsEscape.h"
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#include "nsIURILoader.h"
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#include "nsCURILoader.h"
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// nsISupports methods
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NS_IMPL_ADDREF(nsMIMEInfoBase)
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NS_IMPL_RELEASE(nsMIMEInfoBase)
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NS_INTERFACE_MAP_BEGIN(nsMIMEInfoBase)
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NS_INTERFACE_MAP_ENTRY(nsIHandlerInfo)
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// This is only an nsIMIMEInfo if it's a MIME handler.
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMIMEInfo, mClass == eMIMEInfo)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIHandlerInfo)
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NS_INTERFACE_MAP_END
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// nsMIMEInfoImpl methods
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// Constructors for a MIME handler.
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nsMIMEInfoBase::nsMIMEInfoBase(const char *aMIMEType) :
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mSchemeOrType(aMIMEType),
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mClass(eMIMEInfo),
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mPreferredAction(nsIMIMEInfo::saveToDisk),
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mAlwaysAskBeforeHandling(true)
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{
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}
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nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aMIMEType) :
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mSchemeOrType(aMIMEType),
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mClass(eMIMEInfo),
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mPreferredAction(nsIMIMEInfo::saveToDisk),
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mAlwaysAskBeforeHandling(true)
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{
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}
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// Constructor for a handler that lets the caller specify whether this is a
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// MIME handler or a protocol handler. In the long run, these will be distinct
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// classes (f.e. nsMIMEInfo and nsProtocolInfo), but for now we reuse this class
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// for both and distinguish between the two kinds of handlers via the aClass
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// argument to this method, which can be either eMIMEInfo or eProtocolInfo.
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nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass) :
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mSchemeOrType(aType),
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mClass(aClass),
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mPreferredAction(nsIMIMEInfo::saveToDisk),
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mAlwaysAskBeforeHandling(true)
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{
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}
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nsMIMEInfoBase::~nsMIMEInfoBase()
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{
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetFileExtensions(nsIUTF8StringEnumerator** aResult)
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{
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return NS_NewUTF8StringEnumerator(aResult, &mExtensions, this);
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::ExtensionExists(const nsACString& aExtension, bool *_retval)
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{
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NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
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bool found = false;
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uint32_t extCount = mExtensions.Length();
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if (extCount < 1) return NS_OK;
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for (uint8_t i=0; i < extCount; i++) {
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const nsCString& ext = mExtensions[i];
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if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
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found = true;
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break;
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}
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}
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*_retval = found;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetPrimaryExtension(nsACString& _retval)
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{
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if (!mExtensions.Length())
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return NS_ERROR_NOT_INITIALIZED;
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_retval = mExtensions[0];
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetPrimaryExtension(const nsACString& aExtension)
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{
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NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
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uint32_t extCount = mExtensions.Length();
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uint8_t i;
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bool found = false;
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for (i=0; i < extCount; i++) {
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const nsCString& ext = mExtensions[i];
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if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
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found = true;
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break;
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}
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}
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if (found) {
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mExtensions.RemoveElementAt(i);
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}
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mExtensions.InsertElementAt(0, aExtension);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::AppendExtension(const nsACString& aExtension)
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{
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mExtensions.AppendElement(aExtension);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetType(nsACString& aType)
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{
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if (mSchemeOrType.IsEmpty())
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return NS_ERROR_NOT_INITIALIZED;
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aType = mSchemeOrType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetMIMEType(nsACString& aMIMEType)
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{
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if (mSchemeOrType.IsEmpty())
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return NS_ERROR_NOT_INITIALIZED;
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aMIMEType = mSchemeOrType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetDescription(nsAString& aDescription)
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{
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aDescription = mDescription;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetDescription(const nsAString& aDescription)
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{
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mDescription = aDescription;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::Equals(nsIMIMEInfo *aMIMEInfo, bool *_retval)
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{
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if (!aMIMEInfo) return NS_ERROR_NULL_POINTER;
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nsAutoCString type;
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nsresult rv = aMIMEInfo->GetMIMEType(type);
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if (NS_FAILED(rv)) return rv;
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*_retval = mSchemeOrType.Equals(type);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetFileExtensions(const nsACString& aExtensions)
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{
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mExtensions.Clear();
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nsCString extList( aExtensions );
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int32_t breakLocation = -1;
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while ( (breakLocation= extList.FindChar(',') )!= -1)
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{
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mExtensions.AppendElement(Substring(extList.get(), extList.get() + breakLocation));
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extList.Cut(0, breakLocation+1 );
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}
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if ( !extList.IsEmpty() )
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mExtensions.AppendElement( extList );
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetDefaultDescription(nsAString& aDefaultDescription)
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{
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aDefaultDescription = mDefaultAppDescription;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetPreferredApplicationHandler(nsIHandlerApp ** aPreferredAppHandler)
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{
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*aPreferredAppHandler = mPreferredApplication;
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NS_IF_ADDREF(*aPreferredAppHandler);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetPreferredApplicationHandler(nsIHandlerApp * aPreferredAppHandler)
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{
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mPreferredApplication = aPreferredAppHandler;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetPossibleApplicationHandlers(nsIMutableArray ** aPossibleAppHandlers)
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{
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if (!mPossibleApplications)
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mPossibleApplications = do_CreateInstance(NS_ARRAY_CONTRACTID);
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if (!mPossibleApplications)
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return NS_ERROR_OUT_OF_MEMORY;
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*aPossibleAppHandlers = mPossibleApplications;
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NS_IF_ADDREF(*aPossibleAppHandlers);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetPreferredAction(nsHandlerInfoAction * aPreferredAction)
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{
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*aPreferredAction = mPreferredAction;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetPreferredAction(nsHandlerInfoAction aPreferredAction)
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{
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mPreferredAction = aPreferredAction;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetAlwaysAskBeforeHandling(bool * aAlwaysAsk)
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{
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*aAlwaysAsk = mAlwaysAskBeforeHandling;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::SetAlwaysAskBeforeHandling(bool aAlwaysAsk)
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{
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mAlwaysAskBeforeHandling = aAlwaysAsk;
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return NS_OK;
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}
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/* static */
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nsresult
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nsMIMEInfoBase::GetLocalFileFromURI(nsIURI *aURI, nsIFile **aFile)
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{
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nsresult rv;
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nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI, &rv);
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if (NS_FAILED(rv)) {
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return rv;
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}
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nsCOMPtr<nsIFile> file;
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rv = fileUrl->GetFile(getter_AddRefs(file));
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if (NS_FAILED(rv)) {
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return rv;
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}
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file.forget(aFile);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::LaunchWithFile(nsIFile* aFile)
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{
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nsresult rv;
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// it doesn't make any sense to call this on protocol handlers
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NS_ASSERTION(mClass == eMIMEInfo,
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"nsMIMEInfoBase should have mClass == eMIMEInfo");
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if (mPreferredAction == useSystemDefault) {
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return LaunchDefaultWithFile(aFile);
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}
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if (mPreferredAction == useHelperApp) {
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if (!mPreferredApplication)
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return NS_ERROR_FILE_NOT_FOUND;
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// at the moment, we only know how to hand files off to local handlers
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nsCOMPtr<nsILocalHandlerApp> localHandler =
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do_QueryInterface(mPreferredApplication, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIFile> executable;
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rv = localHandler->GetExecutable(getter_AddRefs(executable));
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NS_ENSURE_SUCCESS(rv, rv);
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return LaunchWithIProcess(executable, aFile->NativePath());
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::LaunchWithURI(nsIURI* aURI,
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nsIInterfaceRequestor* aWindowContext)
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{
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// for now, this is only being called with protocol handlers; that
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// will change once we get to more general registerContentHandler
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// support
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NS_ASSERTION(mClass == eProtocolInfo,
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"nsMIMEInfoBase should be a protocol handler");
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if (mPreferredAction == useSystemDefault) {
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return LoadUriInternal(aURI);
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}
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if (mPreferredAction == useHelperApp) {
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if (!mPreferredApplication)
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return NS_ERROR_FILE_NOT_FOUND;
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return mPreferredApplication->LaunchWithURI(aURI, aWindowContext);
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}
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return NS_ERROR_INVALID_ARG;
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}
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void
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nsMIMEInfoBase::CopyBasicDataTo(nsMIMEInfoBase* aOther)
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{
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aOther->mSchemeOrType = mSchemeOrType;
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aOther->mDefaultAppDescription = mDefaultAppDescription;
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aOther->mExtensions = mExtensions;
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}
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/* static */
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already_AddRefed<nsIProcess>
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nsMIMEInfoBase::InitProcess(nsIFile* aApp, nsresult* aResult)
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{
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NS_ASSERTION(aApp, "Unexpected null pointer, fix caller");
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nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID,
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aResult);
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if (NS_FAILED(*aResult))
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return nullptr;
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*aResult = process->Init(aApp);
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if (NS_FAILED(*aResult))
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return nullptr;
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return process.forget();
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}
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/* static */
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nsresult
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nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg)
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{
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nsresult rv;
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nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
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if (NS_FAILED(rv))
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return rv;
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const char *string = aArg.get();
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return process->Run(false, &string, 1);
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}
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/* static */
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nsresult
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nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsString& aArg)
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{
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nsresult rv;
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nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
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if (NS_FAILED(rv))
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return rv;
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const char16_t *string = aArg.get();
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return process->Runw(false, &string, 1);
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}
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// nsMIMEInfoImpl implementation
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NS_IMETHODIMP
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nsMIMEInfoImpl::GetDefaultDescription(nsAString& aDefaultDescription)
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{
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if (mDefaultAppDescription.IsEmpty() && mDefaultApplication) {
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// Don't want to cache this, just in case someone resets the app
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// without changing the description....
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mDefaultApplication->GetLeafName(aDefaultDescription);
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} else {
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aDefaultDescription = mDefaultAppDescription;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::GetHasDefaultHandler(bool * _retval)
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{
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*_retval = !mDefaultAppDescription.IsEmpty();
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if (mDefaultApplication) {
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bool exists;
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*_retval = NS_SUCCEEDED(mDefaultApplication->Exists(&exists)) && exists;
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}
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return NS_OK;
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}
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nsresult
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nsMIMEInfoImpl::LaunchDefaultWithFile(nsIFile* aFile)
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{
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if (!mDefaultApplication)
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return NS_ERROR_FILE_NOT_FOUND;
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return LaunchWithIProcess(mDefaultApplication, aFile->NativePath());
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}
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NS_IMETHODIMP
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nsMIMEInfoBase::GetPossibleLocalHandlers(nsIArray **_retval)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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