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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "RemoteProcess.h"
#include "RemoteObject.h"
#include "RemoteObjectGraphModel.h"
#include "RemoteObjectPropertyModel.h"
#include <stdio.h>
#include <stdlib.h>
namespace Inspector {
RemoteProcess* s_the;
RemoteProcess& RemoteProcess::the()
{
return *s_the;
}
RemoteProcess::RemoteProcess(pid_t pid)
: m_pid(pid)
, m_object_graph_model(RemoteObjectGraphModel::create(*this))
, m_socket(Core::LocalSocket::construct())
{
s_the = this;
m_socket->set_blocking(true);
}
void RemoteProcess::handle_identify_response(const JsonObject& response)
{
int pid = response.get("pid").to_int();
VERIFY(pid == m_pid);
m_process_name = response.get("process_name").as_string_or({});
if (on_update)
on_update();
}
void RemoteProcess::handle_get_all_objects_response(const JsonObject& response)
{
// FIXME: It would be good if we didn't have to make a local copy of the array value here!
auto objects = response.get("objects");
auto& object_array = objects.as_array();
NonnullOwnPtrVector<RemoteObject> remote_objects;
HashMap<FlatPtr, RemoteObject*> objects_by_address;
for (auto& value : object_array.values()) {
VERIFY(value.is_object());
auto& object = value.as_object();
auto remote_object = make<RemoteObject>();
remote_object->address = object.get("address").to_number<FlatPtr>();
remote_object->parent_address = object.get("parent").to_number<FlatPtr>();
remote_object->name = object.get("name").to_string();
remote_object->class_name = object.get("class_name").to_string();
remote_object->json = object;
objects_by_address.set(remote_object->address, remote_object);
remote_objects.append(move(remote_object));
}
for (size_t i = 0; i < remote_objects.size(); ++i) {
auto& remote_object = remote_objects.ptr_at(i);
auto* parent = objects_by_address.get(remote_object->parent_address).value_or(nullptr);
if (!parent) {
m_roots.append(move(remote_object));
} else {
remote_object->parent = parent;
parent->children.append(move(remote_object));
}
}
m_object_graph_model->update();
if (on_update)
on_update();
}
void RemoteProcess::send_request(const JsonObject& request)
{
auto serialized = request.to_string();
i32 length = serialized.length();
m_socket->write((const u8*)&length, sizeof(length));
m_socket->write(serialized);
}
void RemoteProcess::set_inspected_object(FlatPtr address)
{
JsonObject request;
request.set("type", "SetInspectedObject");
request.set("address", address);
send_request(request);
}
void RemoteProcess::set_property(FlatPtr object, const StringView& name, const JsonValue& value)
{
JsonObject request;
request.set("type", "SetProperty");
request.set("address", object);
request.set("name", JsonValue(name));
request.set("value", value);
send_request(request);
}
void RemoteProcess::update()
{
m_socket->on_connected = [this] {
dbgln("Connected to PID {}", m_pid);
{
JsonObject request;
request.set("type", "Identify");
send_request(request);
}
{
JsonObject request;
request.set("type", "GetAllObjects");
send_request(request);
}
};
m_socket->on_ready_to_read = [this] {
if (m_socket->eof()) {
dbgln("Disconnected from PID {}", m_pid);
m_socket->close();
return;
}
u32 length;
int nread = m_socket->read((u8*)&length, sizeof(length));
if (nread != sizeof(length)) {
dbgln("Disconnected from PID {}", m_pid);
m_socket->close();
return;
}
ByteBuffer data;
size_t remaining_bytes = length;
while (remaining_bytes) {
auto packet = m_socket->read(remaining_bytes);
if (packet.size() == 0)
break;
data.append(packet.data(), packet.size());
remaining_bytes -= packet.size();
}
VERIFY(data.size() == length);
dbgln("Got data size {} and read that many bytes", length);
auto json_value = JsonValue::from_string(data);
VERIFY(json_value.has_value());
VERIFY(json_value.value().is_object());
dbgln("Got JSON response {}", json_value.value());
auto& response = json_value.value().as_object();
auto response_type = response.get("type").as_string_or({});
if (response_type.is_null())
return;
if (response_type == "GetAllObjects") {
handle_get_all_objects_response(response);
return;
}
if (response_type == "Identify") {
handle_identify_response(response);
return;
}
};
auto success = m_socket->connect(Core::SocketAddress::local(String::formatted("/tmp/rpc/{}", m_pid)));
if (!success) {
warnln("Couldn't connect to PID {}", m_pid);
exit(1);
}
}
}
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