423 lines
13 KiB
C++
423 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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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* Patrick C. Beard <beard@netscape.com>
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* Josh Aas <josh@mozilla.com>
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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nsPluginsDirDarwin.cpp
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Mac OS X implementation of the nsPluginsDir/nsPluginsFile classes.
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by Patrick C. Beard.
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*/
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#include "prlink.h"
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#include "prnetdb.h"
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#include "nsPluginsDir.h"
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#include "ns4xPlugin.h"
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#include "nsPluginsDirUtils.h"
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#include "nsILocalFileMac.h"
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <Carbon/Carbon.h>
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#include <CoreServices/CoreServices.h>
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#include <mach-o/loader.h>
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#include <mach-o/fat.h>
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typedef NS_4XPLUGIN_CALLBACK(const char *, NP_GETMIMEDESCRIPTION) ();
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typedef NS_4XPLUGIN_CALLBACK(OSErr, BP_GETSUPPORTEDMIMETYPES) (BPSupportedMIMETypes *mimeInfo, UInt32 flags);
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/*
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** Returns a CFBundleRef if the FSSpec refers to a Mac OS X bundle directory.
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** The caller is responsible for calling CFRelease() to deallocate.
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*/
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static CFBundleRef getPluginBundle(const char* path)
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{
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CFBundleRef bundle = NULL;
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CFStringRef pathRef = CFStringCreateWithCString(NULL, path, kCFStringEncodingUTF8);
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if (pathRef) {
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CFURLRef bundleURL = CFURLCreateWithFileSystemPath(NULL, pathRef, kCFURLPOSIXPathStyle, true);
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if (bundleURL != NULL) {
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bundle = CFBundleCreate(NULL, bundleURL);
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CFRelease(bundleURL);
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}
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CFRelease(pathRef);
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}
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return bundle;
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}
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static OSErr toFSSpec(nsIFile* file, FSSpec& outSpec)
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{
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nsCOMPtr<nsILocalFileMac> lfm = do_QueryInterface(file);
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if (!lfm)
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return -1;
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FSSpec foo;
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lfm->GetFSSpec(&foo);
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outSpec = foo;
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return NS_OK;
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}
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static nsresult toCFURLRef(nsIFile* file, CFURLRef& outURL)
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{
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nsCOMPtr<nsILocalFileMac> lfm = do_QueryInterface(file);
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if (!lfm)
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return NS_ERROR_FAILURE;
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CFURLRef url;
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nsresult rv = lfm->GetCFURL(&url);
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if (NS_SUCCEEDED(rv))
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outURL = url;
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return rv;
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}
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// Opens the resource fork for the plugin
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// Also checks if the plugin is a CFBundle and opens gets the correct resource
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static short OpenPluginResourceFork(nsIFile *pluginFile)
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{
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FSSpec spec;
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OSErr err = toFSSpec(pluginFile, spec);
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Boolean targetIsFolder, wasAliased;
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err = ::ResolveAliasFile(&spec, true, &targetIsFolder, &wasAliased);
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short refNum = ::FSpOpenResFile(&spec, fsRdPerm);
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if (refNum < 0) {
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nsCString path;
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pluginFile->GetNativePath(path);
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CFBundleRef bundle = getPluginBundle(path.get());
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if (bundle) {
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refNum = CFBundleOpenBundleResourceMap(bundle);
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CFRelease(bundle);
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}
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}
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return refNum;
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}
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// function to test whether or not this is a loadable plugin
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static PRBool IsLoadablePlugin(CFURLRef aURL)
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{
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if (!aURL)
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return PR_FALSE;
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PRBool isLoadable = PR_FALSE;
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char path[PATH_MAX];
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if (CFURLGetFileSystemRepresentation(aURL, TRUE, (UInt8*)path, sizeof(path))) {
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UInt32 magic;
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int f = open(path, O_RDONLY);
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if (f != -1) {
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// Mach-O headers use the byte ordering of the architecture on which
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// they run, so test against the magic number in the byte order
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// we're compiling for. Fat headers are always big-endian, so swap
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// them to host before comparing to host representation of the magic
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if (read(f, &magic, sizeof(magic)) == sizeof(magic)) {
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if ((magic == MH_MAGIC) || (PR_ntohl(magic) == FAT_MAGIC))
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isLoadable = PR_TRUE;
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#ifdef __POWERPC__
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// if we're on ppc, we can use CFM plugins
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if (isLoadable == PR_FALSE) {
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UInt32 magic2;
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if (read(f, &magic2, sizeof(magic2)) == sizeof(magic2)) {
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UInt32 cfm_header1 = 0x4A6F7921; // 'Joy!'
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UInt32 cfm_header2 = 0x70656666; // 'peff'
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if (cfm_header1 == magic && cfm_header2 == magic2)
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isLoadable = PR_TRUE;
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}
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}
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#endif
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}
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close(f);
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}
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}
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return isLoadable;
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}
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PRBool nsPluginsDir::IsPluginFile(nsIFile* file)
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{
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CFURLRef pluginURL = NULL;
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if (NS_FAILED(toCFURLRef(file, pluginURL)))
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return PR_FALSE;
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PRBool isPluginFile = PR_FALSE;
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CFBundleRef pluginBundle = CFBundleCreate(kCFAllocatorDefault, pluginURL);
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if (pluginBundle) {
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UInt32 packageType, packageCreator;
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CFBundleGetPackageInfo(pluginBundle, &packageType, &packageCreator);
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if (packageType == 'BRPL' || packageType == 'IEPL' || packageType == 'NSPL') {
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CFURLRef executableURL = CFBundleCopyExecutableURL(pluginBundle);
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if (executableURL) {
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isPluginFile = IsLoadablePlugin(executableURL);
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CFRelease(executableURL);
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}
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}
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// some WebKit plugins that we can't use don't have resource forks
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short refNum;
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if (isPluginFile) {
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refNum = OpenPluginResourceFork(file);
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if (refNum < 0) {
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isPluginFile = PR_FALSE;
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} else {
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::CloseResFile(refNum);
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}
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}
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CFRelease(pluginBundle);
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}
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else {
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LSItemInfoRecord info;
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if (LSCopyItemInfoForURL(pluginURL, kLSRequestTypeCreator, &info) == noErr) {
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if ((info.filetype == 'shlb' && info.creator == 'MOSS') ||
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info.filetype == 'NSPL' ||
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info.filetype == 'BRPL' ||
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info.filetype == 'IEPL') {
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isPluginFile = IsLoadablePlugin(pluginURL);
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}
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}
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}
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CFRelease(pluginURL);
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return isPluginFile;
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}
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nsPluginFile::nsPluginFile(nsIFile *spec)
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: mPlugin(spec)
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{
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}
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nsPluginFile::~nsPluginFile() {}
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/**
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* Loads the plugin into memory using NSPR's shared-library loading
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* mechanism. Handles platform differences in loading shared libraries.
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*/
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nsresult nsPluginFile::LoadPlugin(PRLibrary* &outLibrary)
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{
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const char* path;
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if (!mPlugin)
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return NS_ERROR_NULL_POINTER;
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nsCAutoString temp;
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mPlugin->GetNativePath(temp);
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path = temp.get();
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outLibrary = PR_LoadLibrary(path);
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pLibrary = outLibrary;
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if (!outLibrary) {
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return NS_ERROR_FAILURE;
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}
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#ifdef DEBUG
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printf("[loaded plugin %s]\n", path);
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#endif
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return NS_OK;
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}
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static char* p2cstrdup(StringPtr pstr)
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{
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int len = pstr[0];
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char* cstr = new char[len + 1];
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if (cstr != NULL) {
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::BlockMoveData(pstr + 1, cstr, len);
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cstr[len] = '\0';
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}
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return cstr;
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}
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static char* GetNextPluginStringFromHandle(Handle h, short *index)
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{
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char *ret = p2cstrdup((unsigned char*)(*h + *index));
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*index += (ret ? PL_strlen(ret) : 0) + 1;
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return ret;
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}
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static char* GetPluginString(short id, short index)
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{
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Str255 str;
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::GetIndString(str, id, index);
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return p2cstrdup(str);
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}
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short nsPluginFile::OpenPluginResource()
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{
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return OpenPluginResourceFork(mPlugin);
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}
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/**
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* Obtains all of the information currently available for this plugin.
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*/
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nsresult nsPluginFile::GetPluginInfo(nsPluginInfo& info)
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{
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// clear out the info, except for the first field.
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memset(&info.fName, 0, sizeof(info) - sizeof(PRUint32));
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if (info.fPluginInfoSize < sizeof(nsPluginInfo))
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return NS_ERROR_FAILURE;
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// need to open the plugin's resource file and read some resources.
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short refNum = OpenPluginResource();
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if (refNum < 0)
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return NS_ERROR_FAILURE;
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// 'STR#', 126, 2 => plugin name.
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info.fName = GetPluginString(126, 2);
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// 'STR#', 126, 1 => plugin description.
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info.fDescription = GetPluginString(126, 1);
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nsCString path;
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mPlugin->GetNativePath(path);
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FSSpec spec;
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toFSSpec(mPlugin, spec);
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info.fFileName = p2cstrdup(spec.name);
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info.fFullPath = PL_strdup(path.get());
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CFBundleRef bundle = getPluginBundle(path.get());
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if (bundle) {
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info.fBundle = PR_TRUE;
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CFRelease(bundle);
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}
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else {
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info.fBundle = PR_FALSE;
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}
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// It's possible that our plugin has 2 special extra entry points that'll give us more
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// mime type info. Quicktime does this to get around the need of having admin rights
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// to change mime info in the resource fork. We need to use this info instead of the
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// resource. See bug 113464.
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BPSupportedMIMETypes mi = {kBPSupportedMIMETypesStructVers_1, NULL, NULL};
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if (pLibrary) {
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// First, check for NP_GetMIMEDescription
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NP_GETMIMEDESCRIPTION pfnGetMimeDesc =
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(NP_GETMIMEDESCRIPTION)PR_FindFunctionSymbol(pLibrary, NP_GETMIMEDESCRIPTION_NAME);
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if (pfnGetMimeDesc) {
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nsresult rv = ParsePluginMimeDescription(pfnGetMimeDesc(), info);
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if (NS_SUCCEEDED(rv)) { // if we could parse the mime types from NP_GetMIMEDescription,
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::CloseResFile(refNum); // we've got what we need, close the resource, we're done
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return rv;
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}
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}
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// Next check for mime info from BP_GetSupportedMIMETypes
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BP_GETSUPPORTEDMIMETYPES pfnMime =
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(BP_GETSUPPORTEDMIMETYPES)PR_FindFunctionSymbol(pLibrary, "BP_GetSupportedMIMETypes");
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if (pfnMime && noErr == pfnMime(&mi, 0) && mi.typeStrings) {
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info.fVariantCount = (**(short**)mi.typeStrings) / 2;
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::HLock(mi.typeStrings);
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if (mi.infoStrings) // it's possible some plugins have infoStrings missing
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::HLock(mi.infoStrings);
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}
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}
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// Last, we couldn't get info from an extra entry point for some reason,
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// Lets get info from normal resources
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if (!info.fVariantCount) {
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mi.typeStrings = ::Get1Resource('STR#', 128);
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if (mi.typeStrings) {
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info.fVariantCount = (**(short**)mi.typeStrings) / 2;
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::DetachResource(mi.typeStrings);
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::HLock(mi.typeStrings);
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} else {
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// Don't add this plugin because no mime types could be found
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::CloseResFile(refNum);
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return NS_ERROR_FAILURE;
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}
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mi.infoStrings = ::Get1Resource('STR#', 127);
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if (mi.infoStrings) {
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::DetachResource(mi.infoStrings);
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::HLock(mi.infoStrings);
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}
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}
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// fill-in rest of info struct
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int variantCount = info.fVariantCount;
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info.fMimeTypeArray = new char*[variantCount];
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info.fExtensionArray = new char*[variantCount];
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if (mi.infoStrings)
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info.fMimeDescriptionArray = new char*[variantCount];
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short mimeIndex = 2, descriptionIndex = 2;
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for (int i = 0; i < variantCount; i++) {
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info.fMimeTypeArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
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info.fExtensionArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
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if (mi.infoStrings)
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info.fMimeDescriptionArray[i] = GetNextPluginStringFromHandle(mi.infoStrings, &descriptionIndex);
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}
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::HUnlock(mi.typeStrings);
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::DisposeHandle(mi.typeStrings);
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if (mi.infoStrings) {
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::HUnlock(mi.infoStrings);
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::DisposeHandle(mi.infoStrings);
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}
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::CloseResFile(refNum);
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return NS_OK;
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}
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nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
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{
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if (info.fPluginInfoSize <= sizeof(nsPluginInfo)) {
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delete[] info.fName;
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delete[] info.fDescription;
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int variantCount = info.fVariantCount;
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for (int i = 0; i < variantCount; i++) {
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delete[] info.fMimeTypeArray[i];
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delete[] info.fExtensionArray[i];
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delete[] info.fMimeDescriptionArray[i];
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}
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delete[] info.fMimeTypeArray;
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delete[] info.fMimeDescriptionArray;
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delete[] info.fExtensionArray;
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delete[] info.fFileName;
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delete[] info.fFullPath;
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}
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return NS_OK;
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}
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