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// Copyright 2014 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 "components/sessions/base_session_service_commands.h"
#include "base/pickle.h"
#include "components/sessions/session_backend.h"
#include "components/sessions/session_types.h"
namespace sessions {
namespace {
// Helper used by CreateUpdateTabNavigationCommand(). It writes |str| to
// |pickle|, if and only if |str| fits within (|max_bytes| - |*bytes_written|).
// |bytes_written| is incremented to reflect the data written.
void WriteStringToPickle(Pickle& pickle, int* bytes_written, int max_bytes,
const std::string& str) {
int num_bytes = str.size() * sizeof(char);
if (*bytes_written + num_bytes < max_bytes) {
*bytes_written += num_bytes;
pickle.WriteString(str);
} else {
pickle.WriteString(std::string());
}
}
} // namespace
scoped_ptr<SessionCommand> CreateUpdateTabNavigationCommand(
SessionID::id_type command_id,
SessionID::id_type tab_id,
const sessions::SerializedNavigationEntry& navigation) {
// Use pickle to handle marshalling.
Pickle pickle;
pickle.WriteInt(tab_id);
// We only allow navigations up to 63k (which should be completely
// reasonable).
static const size_t max_state_size =
std::numeric_limits<SessionCommand::size_type>::max() - 1024;
navigation.WriteToPickle(max_state_size, &pickle);
return scoped_ptr<SessionCommand>(new SessionCommand(command_id, pickle));
}
scoped_ptr<SessionCommand> CreateSetTabExtensionAppIDCommand(
SessionID::id_type command_id,
SessionID::id_type tab_id,
const std::string& extension_id) {
// Use pickle to handle marshalling.
Pickle pickle;
pickle.WriteInt(tab_id);
// Enforce a max for ids. They should never be anywhere near this size.
static const SessionCommand::size_type max_id_size =
std::numeric_limits<SessionCommand::size_type>::max() - 1024;
int bytes_written = 0;
WriteStringToPickle(pickle, &bytes_written, max_id_size, extension_id);
return scoped_ptr<SessionCommand>(new SessionCommand(command_id, pickle));
}
scoped_ptr<SessionCommand> CreateSetTabUserAgentOverrideCommand(
SessionID::id_type command_id,
SessionID::id_type tab_id,
const std::string& user_agent_override) {
// Use pickle to handle marshalling.
Pickle pickle;
pickle.WriteInt(tab_id);
// Enforce a max for the user agent length. They should never be anywhere
// near this size.
static const SessionCommand::size_type max_user_agent_size =
std::numeric_limits<SessionCommand::size_type>::max() - 1024;
int bytes_written = 0;
WriteStringToPickle(pickle, &bytes_written, max_user_agent_size,
user_agent_override);
return scoped_ptr<SessionCommand>(new SessionCommand(command_id, pickle));
}
scoped_ptr<SessionCommand> CreateSetWindowAppNameCommand(
SessionID::id_type command_id,
SessionID::id_type window_id,
const std::string& app_name) {
// Use pickle to handle marshalling.
Pickle pickle;
pickle.WriteInt(window_id);
// Enforce a max for ids. They should never be anywhere near this size.
static const SessionCommand::size_type max_id_size =
std::numeric_limits<SessionCommand::size_type>::max() - 1024;
int bytes_written = 0;
WriteStringToPickle(pickle, &bytes_written, max_id_size, app_name);
return scoped_ptr<SessionCommand>(new SessionCommand(command_id, pickle));
}
bool RestoreUpdateTabNavigationCommand(
const SessionCommand& command,
sessions::SerializedNavigationEntry* navigation,
SessionID::id_type* tab_id) {
scoped_ptr<Pickle> pickle(command.PayloadAsPickle());
if (!pickle.get())
return false;
PickleIterator iterator(*pickle);
return iterator.ReadInt(tab_id) && navigation->ReadFromPickle(&iterator);
}
bool RestoreSetTabExtensionAppIDCommand(const SessionCommand& command,
SessionID::id_type* tab_id,
std::string* extension_app_id) {
scoped_ptr<Pickle> pickle(command.PayloadAsPickle());
if (!pickle.get())
return false;
PickleIterator iterator(*pickle);
return iterator.ReadInt(tab_id) && iterator.ReadString(extension_app_id);
}
bool RestoreSetTabUserAgentOverrideCommand(const SessionCommand& command,
SessionID::id_type* tab_id,
std::string* user_agent_override) {
scoped_ptr<Pickle> pickle(command.PayloadAsPickle());
if (!pickle.get())
return false;
PickleIterator iterator(*pickle);
return iterator.ReadInt(tab_id) && iterator.ReadString(user_agent_override);
}
bool RestoreSetWindowAppNameCommand(const SessionCommand& command,
SessionID::id_type* window_id,
std::string* app_name) {
scoped_ptr<Pickle> pickle(command.PayloadAsPickle());
if (!pickle.get())
return false;
PickleIterator iterator(*pickle);
return iterator.ReadInt(window_id) && iterator.ReadString(app_name);
}
} // namespace sessions
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