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From 47235106c9e1257c66bab774aab330be4dabcfb0 Mon Sep 17 00:00:00 2001
From: Mike Perry <mikeperry-git@torproject.org>
Date: Wed, 1 Feb 2012 15:50:15 -0800
Subject: [PATCH 05/20] Block all plugins except flash.
We cannot use the @mozilla.org/extensions/blocklist;1 service, because we
actually want to stop plugins from ever entering the browser's process space
and/or executing code (for example, AV plugins that collect statistics/analyse
urls, magical toolbars that phone home or "help" the user, skype buttons that
ruin our day, and censorship filters). Hence we rolled our own.
See https://trac.torproject.org/projects/tor/ticket/3547#comment:6 for musings
on a better way. Until then, it is delta-darwinism for us.
---
dom/plugins/base/nsPluginHost.cpp | 33 +++++++++++++++++++++++++++++++++
dom/plugins/base/nsPluginHost.h | 2 ++
2 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/dom/plugins/base/nsPluginHost.cpp b/dom/plugins/base/nsPluginHost.cpp
index 0c3efa0..e607e68 100644
--- a/dom/plugins/base/nsPluginHost.cpp
+++ b/dom/plugins/base/nsPluginHost.cpp
@@ -2002,6 +2002,35 @@ bool nsPluginHost::IsDuplicatePlugin(nsPluginTag * aPluginTag)
return false;
}
+PRBool nsPluginHost::GhettoBlacklist(nsIFile *pluginFile)
+{
+ nsCString leaf;
+ const char *leafStr;
+ nsresult rv;
+
+ rv = pluginFile->GetNativeLeafName(leaf);
+ if (NS_FAILED(rv)) {
+ return PR_TRUE; // fuck 'em. blacklist.
+ }
+
+ leafStr = leaf.get();
+
+ if (!leafStr) {
+ return PR_TRUE; // fuck 'em. blacklist.
+ }
+
+ // libgnashplugin.so, libflashplayer.so, Flash Player-10.4-10.5.plugin,
+ // NPSWF32.dll, NPSWF64.dll
+ if (strstr(leafStr, "libgnashplugin") == leafStr ||
+ strstr(leafStr, "libflashplayer") == leafStr ||
+ strstr(leafStr, "Flash Player") == leafStr ||
+ strstr(leafStr, "NPSWF") == leafStr) {
+ return PR_FALSE;
+ }
+
+ return PR_TRUE; // fuck 'em. blacklist.
+}
+
typedef NS_NPAPIPLUGIN_CALLBACK(char *, NP_GETMIMEDESCRIPTION)(void);
nsresult nsPluginHost::ScanPluginsDirectory(nsIFile *pluginsDir,
@@ -2135,6 +2164,10 @@ nsresult nsPluginHost::ScanPluginsDirectory(nsIFile *pluginsDir,
continue;
}
+ if (GhettoBlacklist(localfile)) {
+ continue;
+ }
+
// if it is not found in cache info list or has been changed, create a new one
if (!pluginTag) {
nsPluginFile pluginFile(localfile);
diff --git a/dom/plugins/base/nsPluginHost.h b/dom/plugins/base/nsPluginHost.h
index 1b46957..4f1e890 100644
--- a/dom/plugins/base/nsPluginHost.h
+++ b/dom/plugins/base/nsPluginHost.h
@@ -285,6 +285,8 @@ private:
// Loads all cached plugins info into mCachedPlugins
nsresult ReadPluginInfo();
+ PRBool GhettoBlacklist(nsIFile *pluginFile);
+
// Given a file path, returns the plugins info from our cache
// and removes it from the cache.
void RemoveCachedPluginsInfo(const char *filePath,
--
1.7.5.4
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