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https://github.com/mozilla/gecko-dev.git
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416 lines
12 KiB
C++
416 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsMIMEInfoImpl.h"
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#include "nsXPIDLString.h"
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#include "nsReadableUtils.h"
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#include "nsIPrefService.h"
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#include "nsIPrefBranch.h"
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#include "nsEscape.h"
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#define NEVER_ASK_FOR_SAVE_TO_DISK_PREF "browser.helperApps.neverAsk.saveToDisk"
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#define NEVER_ASK_FOR_OPEN_FILE_PREF "browser.helperApps.neverAsk.openFile"
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// nsISupports methods
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsMIMEInfoImpl, nsIMIMEInfo);
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// nsMIMEInfoImpl methods
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nsMIMEInfoImpl::nsMIMEInfoImpl() {
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NS_INIT_REFCNT();
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mPreferredAction = nsIMIMEInfo::saveToDisk;
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}
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nsMIMEInfoImpl::nsMIMEInfoImpl(const char *aMIMEType) :mMIMEType( aMIMEType ){
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NS_INIT_REFCNT();
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mPreferredAction = nsIMIMEInfo::saveToDisk;
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}
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PRUint32
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nsMIMEInfoImpl::GetExtCount() {
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return mExtensions.Count();
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::GetFileExtensions(PRUint32 *elementCount, char ***extensions) {
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PRUint32 count = mExtensions.Count();
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if (count < 1) return NS_ERROR_NOT_INITIALIZED;
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char **_retExts = (char**)nsMemory::Alloc((count)*sizeof(char*));
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if (!_retExts) return NS_ERROR_OUT_OF_MEMORY;
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for (PRUint32 i=0; i < count; i++) {
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nsCString* ext = mExtensions.CStringAt(i);
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_retExts[i] = ToNewCString(*ext);
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if (!_retExts[i]) {
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// clean up all the strings we've allocated
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while (i-- != 0) nsMemory::Free(_retExts[i]);
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nsMemory::Free(_retExts);
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return NS_ERROR_OUT_OF_MEMORY;
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}
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}
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*elementCount = count;
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*extensions = _retExts;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::ExtensionExists(const char *aExtension, PRBool *_retval) {
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NS_ASSERTION(aExtension, "no extension");
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PRBool found = PR_FALSE;
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PRUint32 extCount = mExtensions.Count();
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if (extCount < 1) return NS_ERROR_NOT_INITIALIZED;
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if (!aExtension) return NS_ERROR_NULL_POINTER;
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nsDependentCString extension(aExtension);
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for (PRUint8 i=0; i < extCount; i++) {
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nsCString* ext = (nsCString*)mExtensions.CStringAt(i);
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if (ext->Equals(extension, nsCaseInsensitiveCStringComparator())) {
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found = PR_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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nsMIMEInfoImpl::GetPrimaryExtension(char **_retval) {
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PRUint32 extCount = mExtensions.Count();
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if (extCount < 1) return NS_ERROR_NOT_INITIALIZED;
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*_retval = ToNewCString(*(mExtensions.CStringAt(0)));
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if (!*_retval) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::SetPrimaryExtension(const char *aExtension) {
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NS_ASSERTION(aExtension, "no extension");
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PRUint32 extCount = mExtensions.Count();
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nsCString extension(aExtension);
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PRUint8 i;
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PRBool found = PR_FALSE;
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for (i=0; i < extCount; i++) {
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nsCString* ext = (nsCString*)mExtensions.CStringAt(i);
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if (ext->Equals(extension, nsCaseInsensitiveCStringComparator())) {
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found = PR_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.RemoveCStringAt(i);
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}
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mExtensions.InsertCStringAt(extension, 0);
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::AppendExtension(const char *aExtension)
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{
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mExtensions.AppendCString( nsCAutoString(aExtension) );
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::Clone(nsIMIMEInfo** aClone) {
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NS_ENSURE_ARG_POINTER(aClone);
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nsMIMEInfoImpl* clone = new nsMIMEInfoImpl(mMIMEType.get());
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if (!clone) {
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*aClone = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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clone->mExtensions = mExtensions;
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clone->mDescription = mDescription;
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nsresult result = NS_OK;
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if (mURI) {
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result = mURI->Clone(getter_AddRefs(clone->mURI));
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NS_ASSERTION(NS_SUCCEEDED(result), "Failed to clone URI");
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}
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clone->mMacType = mMacType;
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clone->mMacCreator = mMacCreator;
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if (mPreferredApplication) {
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result = mPreferredApplication->Clone(getter_AddRefs(clone->mPreferredApplication));
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NS_ASSERTION(NS_SUCCEEDED(result), "Failed to clone preferred handler application");
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}
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clone->mPreferredAction = mPreferredAction;
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clone->mPreferredAppDescription = mPreferredAppDescription;
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return CallQueryInterface(clone, aClone);
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::GetMIMEType(char * *aMIMEType) {
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if (!aMIMEType) return NS_ERROR_NULL_POINTER;
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if (mMIMEType.Length() < 1)
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return NS_ERROR_NOT_INITIALIZED;
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*aMIMEType = ToNewCString(mMIMEType);
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if (!*aMIMEType) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::SetMIMEType(const char* aMIMEType) {
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if (!aMIMEType) return NS_ERROR_NULL_POINTER;
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mMIMEType=aMIMEType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::GetDescription(PRUnichar * *aDescription) {
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if (!aDescription) return NS_ERROR_NULL_POINTER;
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*aDescription = ToNewUnicode(mDescription);
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if (!*aDescription) return NS_ERROR_OUT_OF_MEMORY;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetDescription(const PRUnichar * 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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nsMIMEInfoImpl::GetDataURI(nsIURI * *aDataURI) {
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return mURI->Clone(aDataURI);
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}
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NS_IMETHODIMP
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nsMIMEInfoImpl::Equals(nsIMIMEInfo *aMIMEInfo, PRBool *_retval) {
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if (!aMIMEInfo) return NS_ERROR_NULL_POINTER;
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nsXPIDLCString type;
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nsresult rv = aMIMEInfo->GetMIMEType(getter_Copies(type));
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if (NS_FAILED(rv)) return rv;
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*_retval = mMIMEType.EqualsWithConversion(type);
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::GetMacType(PRUint32 *aMacType)
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{
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*aMacType = mMacType;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetMacType(PRUint32 aMacType)
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{
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mMacType = aMacType;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::GetMacCreator(PRUint32 *aMacCreator)
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{
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*aMacCreator = mMacCreator;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetMacCreator(PRUint32 aMacCreator)
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{
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mMacCreator = aMacCreator;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetFileExtensions( const char* aExtensions )
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{
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mExtensions.Clear();
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nsCString extList( aExtensions );
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PRInt32 breakLocation = -1;
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while ( (breakLocation= extList.FindCharInSet( ",",0 ) )!= -1)
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{
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nsCString ext( extList.get(), breakLocation );
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mExtensions.AppendCString( ext );
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extList.Cut(0, breakLocation+1 );
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}
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if ( extList.Length() )
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mExtensions.AppendCString( extList );
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::GetApplicationDescription(PRUnichar ** aApplicationDescription)
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{
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*aApplicationDescription = ToNewUnicode(mPreferredAppDescription);
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetApplicationDescription(const PRUnichar * aApplicationDescription)
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{
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mPreferredAppDescription = aApplicationDescription;
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return NS_OK;
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}
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NS_IMETHODIMP nsMIMEInfoImpl::GetPreferredApplicationHandler(nsIFile ** 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 nsMIMEInfoImpl::SetPreferredApplicationHandler(nsIFile * 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 nsMIMEInfoImpl::GetPreferredAction(nsMIMEInfoHandleAction * 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 nsMIMEInfoImpl::SetPreferredAction(nsMIMEInfoHandleAction 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 nsMIMEInfoImpl::GetAlwaysAskBeforeHandling(PRBool * aAlwaysAsk)
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{
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// this is a bit complicated. We now store the always ask preference in two preferences:
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// browser.helperApps.neverAsk.saveToDisk and
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// browser.helperApps.neverAsk.openFile
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// Both lists are comma delimited lists containing mime types which the user has specifically
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// decided to override the helper app dialog for.
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// for get always ask, we just need to search both pref branches for our mime type...
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PRBool mimeTypeIsPresent = PR_FALSE;
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CheckPrefForMimeType(NEVER_ASK_FOR_SAVE_TO_DISK_PREF, &mimeTypeIsPresent);
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if (mimeTypeIsPresent)
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{
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*aAlwaysAsk = PR_FALSE;
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mPreferredAction = nsIMIMEInfo::saveToDisk;
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}
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else
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{
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CheckPrefForMimeType(NEVER_ASK_FOR_OPEN_FILE_PREF, &mimeTypeIsPresent);
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if (mimeTypeIsPresent)
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{
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*aAlwaysAsk = PR_FALSE;
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// do we need to force a preferred action here? I don't think so...
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}
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}
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return NS_OK;
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}
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// re-write me to use new string apis to avoid the extra string copy of the pref value in order to call ::Find
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void nsMIMEInfoImpl::CheckPrefForMimeType(const char * prefName, PRBool * aMimeTypeIsPresent)
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{
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*aMimeTypeIsPresent = PR_FALSE;
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nsresult rv = NS_OK;
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nsCOMPtr<nsIPrefService> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
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nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(prefs, &rv);
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if (NS_SUCCEEDED(rv) && prefBranch)
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{
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nsXPIDLCString prefCString;
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nsCAutoString prefValue;
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rv = prefBranch->GetCharPref(prefName, getter_Copies(prefCString));
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if (NS_SUCCEEDED(rv) && *prefCString.get())
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{
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nsUnescape(NS_CONST_CAST(char*,(const char*)prefCString.get()));
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prefValue = prefCString; // i should be able to avoid this string copy
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PRInt32 pos = prefValue.Find(mMIMEType, PR_TRUE);
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if (pos >= 0)
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*aMimeTypeIsPresent = PR_TRUE;
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}
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} // if we got the prefs service
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}
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void nsMIMEInfoImpl::SetRememberPrefForMimeType(const char * prefName)
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{
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// first, make sure it isn't already there...
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PRBool mimeTypeIsPresent = PR_FALSE;
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CheckPrefForMimeType(prefName, &mimeTypeIsPresent);
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if (mimeTypeIsPresent) return; // mime type is already present...
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nsresult rv = NS_OK;
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nsCOMPtr<nsIPrefService> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
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nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(prefs, &rv);
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if (NS_SUCCEEDED(rv) && prefBranch)
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{
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// read out the current pref string and unescape it.
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nsXPIDLCString prefCString;
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nsCAutoString prefValue;
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rv = prefBranch->GetCharPref(prefName, getter_Copies(prefCString));
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if (NS_SUCCEEDED(rv) && *prefCString.get())
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{
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nsUnescape(NS_CONST_CAST(char*,(const char*)prefCString.get()));
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prefValue = prefCString;
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}
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if (!prefValue.IsEmpty()) // if the pref string isn't empty...
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{
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prefValue.Append(", ");
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prefValue.Append(mMIMEType);
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}
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else
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prefValue = mMIMEType;
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// always escape the pref b4 storing it in case someone enters some funky characters for a mime type...
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nsXPIDLCString escapedPrefString;
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escapedPrefString.Adopt(nsEscape(prefValue.get(), url_XAlphas));
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prefBranch->SetCharPref(prefName, escapedPrefString);
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}
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}
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NS_IMETHODIMP nsMIMEInfoImpl::SetAlwaysAskBeforeHandling(PRBool aAlwaysAsk)
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{
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if (!aAlwaysAsk)
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{
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if (mPreferredAction == nsIMIMEInfo::saveToDisk)
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SetRememberPrefForMimeType(NEVER_ASK_FOR_SAVE_TO_DISK_PREF);
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else
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SetRememberPrefForMimeType(NEVER_ASK_FOR_OPEN_FILE_PREF);
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}
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return NS_OK;
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}
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