Load additional NSS library files in zygote main if remoting is enabled

base/nss_util.cc

 // Copyright (c) 2010 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 "base/nss_util.h"
 #include "base/nss_util_internal.h"
 
 #include <nss.h>
 #include <plarena.h>
 #include <prerror.h>
 #include <prinit.h>
 #include <prtime.h>
 #include <pk11pub.h>
 #include <secmod.h>
 
 #if defined(OS_LINUX)
 #include <linux/nfs_fs.h>
 #include <sys/vfs.h>
 #endif
 
 #include "base/environment.h"
+#include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "base/native_library.h"
 #include "base/scoped_ptr.h"
 #include "base/stringprintf.h"
 #include "base/threading/thread_restrictions.h"
 
 // USE_NSS means we use NSS for everything crypto-related.  If USE_NSS is not
 // defined, such as on Mac and Windows, we use NSS for SSL only -- we don't
 // use NSS for crypto or certificate verification, and we don't use the NSS
 // certificate and key databases.
 #if defined(USE_NSS)
 #include "base/crypto/crypto_module_blocking_password_delegate.h"
@@ skipping 360 matching lines @@
 
 void ForceNSSNoDBInit() {
   NSSInitSingleton::ForceNoDBInit();
 }
 
 void DisableNSSForkCheck() {
   scoped_ptr<Environment> env(Environment::Create());
   env->SetVar("NSS_STRICT_NOFORK", "DISABLED");
 }
 
+void LoadNSSLibraries() {
+  // NSS libraries are linked dynamically on Linux so do this only on Linux.
+#if defined(OS_LINUX)
+  FilePath module_path("/usr/lib/nss");

[wtc, 2011/03/16 19:00:52]

"/usr/lib/nss" is specific to Debian and its derivatives
such as Ubuntu.

On other Linux distributions, libsoftokn3.so and
libfreebl3.so are on the default shared library search path,
so you don't need to use full pathnames.

Hardcoding the list of NSS shared libraries that need to
be preloaded is fine by me.

+  base::LoadNativeLibrary(module_path.Append("libsoftokn3.so"));
+  base::LoadNativeLibrary(module_path.Append("libfreebl3.so"));
+#endif
+}
+
 bool CheckNSSVersion(const char* version) {
   return !!NSS_VersionCheck(version);
 }
 
 #if defined(USE_NSS)
 bool OpenTestNSSDB(const FilePath& path, const char* description) {
   return g_nss_singleton.Get().OpenTestNSSDB(path, description);
 }
 
 void CloseTestNSSDB() {
@@ skipping 41 matching lines @@
   exploded.millisecond  = prxtime.tm_usec / 1000;
 
   return Time::FromUTCExploded(exploded);
 }
 
 PK11SlotInfo* GetDefaultNSSKeySlot() {
   return g_nss_singleton.Get().GetDefaultKeySlot();
 }
 
 }  // namespace base