linux: defend against "netscape" within plugin path

webkit/glue/plugins/plugin_list_linux.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/glue/plugins/plugin_list.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
@@ skipping 99 matching lines @@
 
     // Java doesn't like being loaded through a symlink, since it uses
     // its path to find dependent data files.
     // file_util::AbsolutePath calls through to realpath(), which resolves
     // symlinks.
     FilePath orig_path = path;
     file_util::AbsolutePath(&path);
     if (DebugPluginLoading())
       LOG(ERROR) << "Resolved " << orig_path.value() << " -> " << path.value();
 
+    // Flash stops working if the containing directory involves 'netscape'.
+    // No joke.  So use the other path if it's better.
+    static const char kFlashPlayerFilename[] = "libflashplayer.so";
+    static const char kNetscapeInPath[] = "/netscape/";
+    if (path.BaseName().value() == kFlashPlayerFilename &&
+        path.value().find(kNetscapeInPath) != std::string::npos) {
+      if (orig_path.value().find(kNetscapeInPath) == std::string::npos) {
+        // Go back to the old path.
+        path = orig_path;
+      } else {
+        LOG(ERROR) << "Flash misbehaves when used from a directory containing "
+                   << kNetscapeInPath << ", so skipping " << orig_path.value();
+        continue;
+      }
+    }
+
     // Get mtime.
     file_util::FileInfo info;
     if (!file_util::GetFileInfo(path, &info))
       continue;
 
     // Skip duplicates of the same file in our list.
     bool skip = false;
     for (size_t i = 0; i < plugins->size(); ++i) {
       if (plugins->at(i).path == path) {
         skip = true;
@@ skipping 46 matching lines @@
 
   // TODO(evanm): prefer the newest version of flash, etc. here?
 
   if (DebugPluginLoading())
     LOG(ERROR) << "Using " << info.path.value();
 
   return true;
 }
 
 } // namespace NPAPI