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// Copyright (c) 2008 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_init.h"
#include <nss.h>
// Work around https://bugzilla.mozilla.org/show_bug.cgi?id=455424
// until NSS 3.12.2 comes out and we update to it.
#define Lock FOO_NSS_Lock
#include <secmod.h>
#include <ssl.h>
#undef Lock
#include "base/file_util.h"
#include "base/logging.h"
#include "base/singleton.h"
namespace {
// Load nss's built-in root certs.
SECMODModule *InitDefaultRootCerts() {
const char* kModulePath = "libnssckbi.so";
char modparams[1024];
snprintf(modparams, sizeof(modparams),
"name=\"Root Certs\" library=\"%s\"", kModulePath);
SECMODModule *root = SECMOD_LoadUserModule(modparams, NULL, PR_FALSE);
if (root)
return root;
// Aw, snap. Can't find/load root cert shared library.
// This will make it hard to talk to anybody via https.
NOTREACHED();
return NULL;
}
class NSSInitSingleton {
public:
NSSInitSingleton() {
// Initialize without using a persistant database (e.g. ~/.netscape)
CHECK(NSS_NoDB_Init(".") == SECSuccess);
root_ = InitDefaultRootCerts();
NSS_SetDomesticPolicy();
// Explicitly enable exactly those ciphers with keys of at least 80 bits
for (int i = 0; i < SSL_NumImplementedCiphers; i++) {
SSLCipherSuiteInfo info;
if (SSL_GetCipherSuiteInfo(SSL_ImplementedCiphers[i], &info,
sizeof(info)) == SECSuccess) {
SSL_CipherPrefSetDefault(SSL_ImplementedCiphers[i],
(info.effectiveKeyBits >= 80));
}
}
// Enable SSL
SSL_OptionSetDefault(SSL_SECURITY, PR_TRUE);
// All other SSL options are set per-session by SSLClientSocket.
}
~NSSInitSingleton() {
if (root_) {
SECMOD_UnloadUserModule(root_);
SECMOD_DestroyModule(root_);
root_ = NULL;
}
// Have to clear the cache, or NSS_Shutdown fails with SEC_ERROR_BUSY
SSL_ClearSessionCache();
SECStatus status = NSS_Shutdown();
if (status != SECSuccess)
LOG(ERROR) << "NSS_Shutdown failed, leak? See "
"http://code.google.com/p/chromium/issues/detail?id=4609";
}
private:
SECMODModule *root_;
};
} // namespace
namespace base {
void EnsureNSSInit() {
Singleton<NSSInitSingleton>::get();
}
} // namespace base
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