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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/crypto_module_password_dialog_nss.h"
#include <pk11pub.h>
#include <stddef.h>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace {
bool ShouldShowDialog(PK11SlotInfo* slot) {
// The wincx arg is unused since we don't call PK11_SetIsLoggedInFunc.
return (PK11_NeedLogin(slot) && !PK11_IsLoggedIn(slot, nullptr /* wincx */));
}
// Basically an asynchronous implementation of NSS's PK11_DoPassword.
// Note: This currently handles only the simple case. See the TODOs in
// GotPassword for what is yet unimplemented.
class SlotUnlocker {
public:
SlotUnlocker(std::vector<crypto::ScopedPK11Slot> modules,
CryptoModulePasswordReason reason,
const net::HostPortPair& server,
gfx::NativeWindow parent,
base::OnceClosure callback);
void Start();
private:
void GotPassword(const std::string& password);
void Done();
size_t current_ = 0;
std::vector<crypto::ScopedPK11Slot> modules_;
CryptoModulePasswordReason reason_;
net::HostPortPair server_;
gfx::NativeWindow parent_;
base::OnceClosure callback_;
PRBool retry_ = PR_FALSE;
};
SlotUnlocker::SlotUnlocker(std::vector<crypto::ScopedPK11Slot> modules,
CryptoModulePasswordReason reason,
const net::HostPortPair& server,
gfx::NativeWindow parent,
base::OnceClosure callback)
: modules_(std::move(modules)),
reason_(reason),
server_(server),
parent_(parent),
callback_(std::move(callback)) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
void SlotUnlocker::Start() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
for (; current_ < modules_.size(); ++current_) {
if (ShouldShowDialog(modules_[current_].get())) {
ShowCryptoModulePasswordDialog(
PK11_GetTokenName(modules_[current_].get()), retry_, reason_,
server_.host(), parent_,
base::BindOnce(&SlotUnlocker::GotPassword, base::Unretained(this)));
return;
}
}
Done();
}
void SlotUnlocker::GotPassword(const std::string& password) {
// TODO(mattm): PK11_DoPassword has something about PK11_Global.verifyPass.
// Do we need it?
// http://mxr.mozilla.org/mozilla/source/security/nss/lib/pk11wrap/pk11auth.c#577
if (password.empty()) {
// User cancelled entering password. Oh well.
++current_;
Start();
return;
}
// TODO(mattm): handle protectedAuthPath
SECStatus rv =
PK11_CheckUserPassword(modules_[current_].get(), password.c_str());
if (rv == SECWouldBlock) {
// Incorrect password. Try again.
retry_ = PR_TRUE;
Start();
return;
}
// TODO(mattm): PK11_DoPassword calls nssTrustDomain_UpdateCachedTokenCerts on
// non-friendly slots. How important is that?
// Correct password (SECSuccess) or too many attempts/other failure
// (SECFailure). Either way we're done with this slot.
++current_;
Start();
}
void SlotUnlocker::Done() {
DCHECK_EQ(current_, modules_.size());
std::move(callback_).Run();
delete this;
}
} // namespace
namespace chrome {
void UnlockSlotsIfNecessary(std::vector<crypto::ScopedPK11Slot> modules,
CryptoModulePasswordReason reason,
const net::HostPortPair& server,
gfx::NativeWindow parent,
base::OnceClosure callback) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
for (size_t i = 0; i < modules.size(); ++i) {
if (ShouldShowDialog(modules[i].get())) {
(new SlotUnlocker(std::move(modules), reason, server, parent,
std::move(callback)))
->Start();
return;
}
}
std::move(callback).Run();
}
void UnlockCertSlotIfNecessary(CERTCertificate* cert,
CryptoModulePasswordReason reason,
const net::HostPortPair& server,
gfx::NativeWindow parent,
base::OnceClosure callback) {
std::vector<crypto::ScopedPK11Slot> modules;
modules.push_back(crypto::ScopedPK11Slot(PK11_ReferenceSlot(cert->slot)));
UnlockSlotsIfNecessary(std::move(modules), reason, server, parent,
std::move(callback));
}
} // namespace chrome
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