533 lines
17 KiB
C++
533 lines
17 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: 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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/*
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nsPluginsDirUNIX.cpp
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UNIX implementation of the nsPluginsDir/nsPluginsFile classes.
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by Alex Musil
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*/
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#include "xp_core.h"
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#include "nsplugin.h"
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#include "ns4xPlugin.h"
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#include "ns4xPluginInstance.h"
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#include "nsIServiceManager.h"
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#include "nsIMemory.h"
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#include "nsIPluginStreamListener.h"
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#include "nsPluginsDir.h"
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#include "nsObsoleteModuleLoading.h"
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#include "prmem.h"
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#include "prenv.h"
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#include "prerror.h"
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#include <sys/stat.h>
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#include "nsIPref.h"
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static NS_DEFINE_CID(kPrefServiceCID, NS_PREF_CID);
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#define PLUGIN_PATH "MOZ_PLUGIN_PATH"
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#define MTYPE_END '|'
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#define MTYPE_END_OLD ';'
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#define MTYPE_PART ':'
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/* Local helper functions */
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static PRUint32 CalculateVariantCount(char* mimeTypes)
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{
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PRUint32 variants = 0;
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char* ptr = mimeTypes;
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while (*ptr) {
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if (*ptr == MTYPE_END) {
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if (!ptr[1]) {
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/*
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* This is a trailing separator, with nothing after it. We
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* normalize these away here by slamming a NUL in and
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* stopping.
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*/
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*ptr = 0;
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break;
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}
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variants++;
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}
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++ptr;
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}
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return variants;
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}
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///////////////////////////////////////////////////////////////////////////////
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// Currently, in the MIME type info passed in by plugin, a ';' is used as the
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// separator of two MIME types, and also the sparator of a version in one MIME
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// type. For example:
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// "application/x-java-applet;version1.3::java(TM) plugin;application/x-java-
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// applet...".
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// The ambiguity of ';' causes the browser fail to parse the MIME types
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// correctly.
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//
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// This method parses the MIME type input, and replaces the MIME type
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// separators with '|' to eliminate the ambiguity of ';'. (The Windows version
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// also uses '|' as the MIME type separator.)
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//
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// Input format: "...type[;version]:[extension]:[desecription];..."
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// Output format: "...type[;version]:[extension]:[desecription]|..."
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//
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static void SetMIMETypeSeparator(char *minfo)
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{
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char *p;
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p = minfo;
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while (p) {
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if ((p = PL_strchr(p, MTYPE_PART)) != 0) {
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p++;
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if ((p = PL_strchr(p, MTYPE_END_OLD)) != 0) {
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*p = MTYPE_END;
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p++;
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}
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}
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}
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}
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#define LOCAL_PLUGIN_DLL_SUFFIX ".so"
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#if defined(HPUX11)
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#define DEFAULT_X11_PATH "/usr/lib/X11R6/"
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#undef LOCAL_PLUGIN_DLL_SUFFIX
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#define LOCAL_PLUGIN_DLL_SUFFIX ".sl"
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#elif defined(SOLARIS)
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#define DEFAULT_X11_PATH "/usr/openwin/lib/"
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#elif defined(LINUX)
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#define DEFAULT_X11_PATH "/usr/X11R6/lib/"
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#else
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#define DEFAULT_X11_PATH ""
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#endif
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#ifdef MOZ_WIDGET_GTK
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#define PLUGIN_MAX_LEN_OF_TMP_ARR 512
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static void DisplayPR_LoadLibraryErrorMessage(const char *libName)
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{
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char errorMsg[PLUGIN_MAX_LEN_OF_TMP_ARR] = "Cannot get error from NSPR.";
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if (PR_GetErrorTextLength() < (int) sizeof(errorMsg))
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PR_GetErrorText(errorMsg);
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fprintf(stderr, "LoadPlugin: failed to initialize shared library %s [%s]\n",
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libName, errorMsg);
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}
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static void SearchForSoname(const char* name, char** soname)
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{
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if (!(name && soname))
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return;
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PRDir *fdDir = PR_OpenDir(DEFAULT_X11_PATH);
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if (!fdDir)
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return;
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int n = PL_strlen(name);
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PRDirEntry *dirEntry;
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while ((dirEntry = PR_ReadDir(fdDir, PR_SKIP_BOTH))) {
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if (!PL_strncmp(dirEntry->name, name, n)) {
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if (dirEntry->name[n] == '.' && dirEntry->name[n+1] && !dirEntry->name[n+2]) {
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// name.N, wild guess this is what we need
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char out[PLUGIN_MAX_LEN_OF_TMP_ARR] = DEFAULT_X11_PATH;
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PL_strcat(out, dirEntry->name);
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*soname = PL_strdup(out);
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break;
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}
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}
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}
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PR_CloseDir(fdDir);
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}
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static PRBool LoadExtraSharedLib(const char *name, char **soname, PRBool tryToGetSoname)
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{
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PRBool ret = PR_TRUE;
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PRLibSpec tempSpec;
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PRLibrary *handle;
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tempSpec.type = PR_LibSpec_Pathname;
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tempSpec.value.pathname = name;
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handle = PR_LoadLibraryWithFlags(tempSpec, PR_LD_NOW|PR_LD_GLOBAL);
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if (!handle) {
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ret = PR_FALSE;
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DisplayPR_LoadLibraryErrorMessage(name);
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if (tryToGetSoname) {
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SearchForSoname(name, soname);
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if (*soname) {
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ret = LoadExtraSharedLib((const char *) *soname, NULL, PR_FALSE);
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}
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}
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}
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return ret;
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}
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#define PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS 32
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#define PREF_PLUGINS_SONAME "plugin.soname.list"
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#define DEFAULT_EXTRA_LIBS_LIST "libXt" LOCAL_PLUGIN_DLL_SUFFIX ":libXext" LOCAL_PLUGIN_DLL_SUFFIX
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/*
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this function looks for
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user_pref("plugin.soname.list", "/usr/X11R6/lib/libXt.so.6:libXiext.so");
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in user's pref.js
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and loads all libs in specified order
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*/
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static void LoadExtraSharedLibs()
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{
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// check out if user's prefs.js has libs name
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nsresult res;
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nsCOMPtr<nsIPref> prefs = do_GetService(kPrefServiceCID, &res);
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if (NS_SUCCEEDED(res) && (prefs != nsnull)) {
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char *sonamesListFromPref = PREF_PLUGINS_SONAME;
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char *sonameList = NULL;
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PRBool prefSonameListIsSet = PR_TRUE;
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res = prefs->CopyCharPref(sonamesListFromPref, &sonameList);
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if (!sonameList) {
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// pref is not set, lets use hardcoded list
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prefSonameListIsSet = PR_FALSE;
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sonameList = PL_strdup(DEFAULT_EXTRA_LIBS_LIST);
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}
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if (sonameList) {
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char *arrayOfLibs[PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS] = {0};
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int numOfLibs = 0;
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char *nextToken;
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char *p = nsCRT::strtok(sonameList,":",&nextToken);
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if (p) {
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while (p && numOfLibs < PLUGIN_MAX_NUMBER_OF_EXTRA_LIBS) {
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arrayOfLibs[numOfLibs++] = p;
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p = nsCRT::strtok(nextToken,":",&nextToken);
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}
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} else // there is just one lib
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arrayOfLibs[numOfLibs++] = sonameList;
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char sonameListToSave[PLUGIN_MAX_LEN_OF_TMP_ARR] = "";
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for (int i=0; i<numOfLibs; i++) {
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// trim out head/tail white spaces (just in case)
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PRBool head = PR_TRUE;
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p = arrayOfLibs[i];
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while (*p) {
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if (*p == ' ' || *p == '\t') {
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if (head) {
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arrayOfLibs[i] = ++p;
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} else {
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*p = 0;
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}
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} else {
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head = PR_FALSE;
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p++;
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}
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}
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if (!arrayOfLibs[i][0]) {
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continue; // null string
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}
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PRBool tryToGetSoname = PR_TRUE;
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if (PL_strchr(arrayOfLibs[i], '/')) {
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//assuming it's real name, try to stat it
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struct stat st;
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if (stat((const char*) arrayOfLibs[i], &st)) {
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//get just a file name
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arrayOfLibs[i] = PL_strrchr(arrayOfLibs[i], '/') + 1;
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} else
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tryToGetSoname = PR_FALSE;
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}
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char *soname = NULL;
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if (LoadExtraSharedLib(arrayOfLibs[i], &soname, tryToGetSoname)) {
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//construct soname's list to save in prefs
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p = soname ? soname : arrayOfLibs[i];
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int n = PLUGIN_MAX_LEN_OF_TMP_ARR -
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(PL_strlen(sonameListToSave) + PL_strlen(p));
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if (n > 0) {
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PL_strcat(sonameListToSave, p);
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PL_strcat(sonameListToSave,":");
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}
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if (soname) {
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PL_strfree(soname); // it's from strdup
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}
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if (numOfLibs > 1)
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arrayOfLibs[i][PL_strlen(arrayOfLibs[i])] = ':'; //restore ":" in sonameList
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}
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}
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for (p = &sonameListToSave[PL_strlen(sonameListToSave) - 1]; *p == ':'; p--)
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*p = 0; //delete tail ":" delimiters
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if (!prefSonameListIsSet || PL_strcmp(sonameList, sonameListToSave)) {
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// if user specified some bogus soname I overwrite it here,
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// otherwise it'll decrease performance by calling popen() in SearchForSoname
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// every time for each bogus name
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prefs->SetCharPref(sonamesListFromPref, (const char *)sonameListToSave);
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}
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PL_strfree(sonameList);
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}
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}
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}
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#endif //MOZ_WIDGET_GTK
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///////////////////////////////////////////////////////////////////////////
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/* nsPluginsDir implementation */
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PRBool nsPluginsDir::IsPluginFile(const nsFileSpec& fileSpec)
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{
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const char* pathname = fileSpec.GetCString();
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PRBool ret = PR_FALSE;
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if (pathname) {
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int n = PL_strlen(pathname) - (sizeof(LOCAL_PLUGIN_DLL_SUFFIX) - 1);
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if (n > 0 && !PL_strcmp(&pathname[n], LOCAL_PLUGIN_DLL_SUFFIX)) {
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ret = PR_TRUE; // *.so or *.sl file
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}
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#ifdef NS_DEBUG
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printf("IsPluginFile(%s) == %s\n", pathname, ret?"TRUE":"FALSE");
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#endif
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}
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return ret;
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}
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///////////////////////////////////////////////////////////////////////////
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/* nsPluginFile implementation */
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nsPluginFile::nsPluginFile(const nsFileSpec& spec)
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: nsFileSpec(spec)
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{
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// nada
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}
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nsPluginFile::~nsPluginFile()
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{
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// nada
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}
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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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PRLibSpec libSpec;
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libSpec.type = PR_LibSpec_Pathname;
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libSpec.value.pathname = this->GetCString();
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pLibrary = outLibrary = PR_LoadLibraryWithFlags(libSpec, 0);
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#ifdef MOZ_WIDGET_GTK
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///////////////////////////////////////////////////////////
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// Normally, Mozilla isn't linked against libXt and libXext
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// since it's a Gtk/Gdk application. On the other hand,
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// legacy plug-ins expect the libXt and libXext symbols
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// to already exist in the global name space. This plug-in
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// wrapper is linked against libXt and libXext, but since
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// we never call on any of these libraries, plug-ins still
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// fail to resolve Xt symbols when trying to do a dlopen
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// at runtime. Explicitly opening Xt/Xext into the global
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// namespace before attempting to load the plug-in seems to
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// work fine.
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if (!pLibrary) {
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LoadExtraSharedLibs();
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// try reload plugin ones more
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pLibrary = outLibrary = PR_LoadLibraryWithFlags(libSpec, 0);
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if (!pLibrary)
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DisplayPR_LoadLibraryErrorMessage(libSpec.value.pathname);
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}
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#endif
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#ifdef NS_DEBUG
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printf("LoadPlugin() %s returned %lx\n",
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libSpec.value.pathname, (unsigned long)pLibrary);
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#endif
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return NS_OK;
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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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nsresult rv;
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const char* mimedescr = 0, *name = 0, *description = 0;
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char *mdesc,*start,*nexttoc,*mtype,*exten,*descr;
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int i,num;
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// No, this doesn't leak. GetGlobalServiceManager() doesn't addref
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// it's out pointer. Maybe it should.
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nsIServiceManagerObsolete* mgr;
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nsServiceManager::GetGlobalServiceManager((nsIServiceManager**)&mgr);
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nsFactoryProc nsGetFactory =
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(nsFactoryProc) PR_FindSymbol(pLibrary, "NSGetFactory");
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nsCOMPtr<nsIPlugin> plugin;
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if (nsGetFactory) {
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// It's an almost-new-style plugin. The "truly new" plugins
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// are just XPCOM components, but there are some Mozilla
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// Classic holdovers that live in the plugins directory but
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// implement nsIPlugin and the factory stuff.
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static NS_DEFINE_CID(kPluginCID, NS_PLUGIN_CID);
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nsCOMPtr<nsIFactory> factory;
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rv = nsGetFactory(mgr, kPluginCID, nsnull, nsnull,
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getter_AddRefs(factory));
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if (NS_FAILED(rv)) return rv;
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plugin = do_QueryInterface(factory);
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} else {
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// It's old sk00l
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// if fileName parameter == 0 ns4xPlugin::CreatePlugin() will not call NP_Initialize()
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rv = ns4xPlugin::CreatePlugin(mgr, 0, 0, pLibrary,
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getter_AddRefs(plugin));
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if (NS_FAILED(rv)) return rv;
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}
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if (plugin) {
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info.fFileName = PL_strdup(this->GetCString());
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plugin->GetValue(nsPluginVariable_NameString, &name);
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if (!name)
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name = PL_strrchr(info.fFileName, '/') + 1;
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info.fName = PL_strdup(name);
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plugin->GetValue(nsPluginVariable_DescriptionString, &description);
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if (!description)
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description = "";
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info.fDescription = PL_strdup(description);
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plugin->GetMIMEDescription(&mimedescr);
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} else {
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info.fName = PL_strdup(this->GetCString());
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info.fDescription = PL_strdup("");
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}
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#ifdef NS_DEBUG
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printf("GetMIMEDescription() returned \"%s\"\n", mimedescr);
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#endif
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// Copy MIME type input.
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mdesc = PL_strdup(mimedescr);
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// Currently in MIME type input, a ';' is used as MIME type separator
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// and a MIME type's version separator, which makes parsing difficult.
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// To eliminate the ambiguity, set MIME type separator to '|'.
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SetMIMETypeSeparator(mdesc);
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// Get number of MIME types.
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num = CalculateVariantCount(mdesc) + 1;
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info.fVariantCount = num;
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info.fMimeTypeArray = (char **)PR_Malloc(num * sizeof(char *));
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info.fMimeDescriptionArray = (char **)PR_Malloc(num * sizeof(char *));
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info.fExtensionArray = (char **)PR_Malloc(num * sizeof(char *));
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// Retrive each MIME type info.
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// Each MIME type info stored in format, "type:extension:description"
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// Sample: "application/x-java-applet;version=1.1::Java(tm) Plug-in;".
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start = mdesc;
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for(i = 0;i < num && *start;i++) {
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if(i+1 < num) {
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if((nexttoc = PL_strchr(start, MTYPE_END)) != 0)
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*nexttoc++=0;
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else
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nexttoc=start+strlen(start);
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} else
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nexttoc=start+strlen(start);
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mtype = start;
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exten = PL_strchr(start, MTYPE_PART);
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if(exten) {
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*exten++ = 0;
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descr = PL_strchr(exten, MTYPE_PART);
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} else
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descr = NULL;
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if(descr)
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*descr++=0;
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#ifdef DEBUG_av
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printf("Registering plugin %d for: \"%s\",\"%s\",\"%s\"\n",
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i, mtype,descr ? descr : "null",exten ? exten : "null");
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#endif /* DEBUG_av */
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if(!*mtype && !descr && !exten) {
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i--;
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info.fVariantCount--;
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} else {
|
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info.fMimeTypeArray[i] = mtype ? PL_strdup(mtype) : PL_strdup("");
|
|
info.fMimeDescriptionArray[i] = descr ? PL_strdup(descr) :
|
|
PL_strdup("");
|
|
info.fExtensionArray[i] = exten ? PL_strdup(exten) : PL_strdup("");
|
|
}
|
|
start = nexttoc;
|
|
}
|
|
|
|
PR_Free(mdesc);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
|
|
{
|
|
if(info.fName != nsnull)
|
|
PL_strfree(info.fName);
|
|
|
|
if(info.fDescription != nsnull)
|
|
PL_strfree(info.fDescription);
|
|
|
|
for(PRUint32 i = 0; i < info.fVariantCount; i++) {
|
|
if (info.fMimeTypeArray[i] != nsnull)
|
|
PL_strfree(info.fMimeTypeArray[i]);
|
|
|
|
if (info.fMimeDescriptionArray[i] != nsnull)
|
|
PL_strfree(info.fMimeDescriptionArray[i]);
|
|
|
|
if(info.fExtensionArray[i] != nsnull)
|
|
PL_strfree(info.fExtensionArray[i]);
|
|
}
|
|
|
|
PR_FREEIF(info.fMimeTypeArray);
|
|
PR_FREEIF(info.fMimeDescriptionArray);
|
|
PR_FREEIF(info.fExtensionArray);
|
|
|
|
if(info.fFileName != nsnull)
|
|
PL_strfree(info.fFileName);
|
|
|
|
return NS_OK;
|
|
}
|