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Atmosphere/stratosphere/fs_mitm/source/mitm_session.hpp
Tony Wasserka ad636f7216 Modernize C++ usage (#144) 
* Stratosphere: Use modern C++ idioms in some places

* algorithms like std::for_each are used instead of raw loops

* Stratosphere: Replace more raw loops with algorithms

* Stratosphere: Add a utility predicate function to test for equality with a reference element

This can be used to rewrite some common raw loops using algorithms instead

* fs.mitm: Use variant

* fs.mitm: Use enum class

* fs.mitm: Turn RomFSSourceInfo::Cleanup into a destructor

This obsoletes the need for a custom deleter in other places

* fs.mitm: Use enum class some more

* fs.mitm: Use unique_ptr

* fs.mitm: Simplify initialization

* Stratosphere: Simplify initialization

* fs.mitm: Use unique_ptr (fix memory leak along the way)

The previous code was using "delete" rather than "delete[]"

* fs.mitm: Use vector::emplace_back rather than push_back

emplace_back constructs elements in-place, hence avoiding a redundant element copy.

* Stratosphere: Replace more raw loops with algorithms

* Stratosphere: Use unique_ptr

* fs.mitm: Replace more raw loops with algorithms

* Stratosphere: Prefer move-construction over copy-construction when moving sink parameters around
2018-06-19 11:07:31 -07:00

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#pragma once
#include <switch.h>
#include <stratosphere.hpp>
#include "imitmserviceobject.hpp"
#include "mitm_query_service.hpp"
#include "mitm_server.hpp"
#include "fsmitm_worker.hpp"
#include "debug.hpp"
template <typename T>
class MitMServer;
template <typename T>
class MitMSession final : public ISession<T> {
static_assert(std::is_base_of<IMitMServiceObject, T>::value, "MitM Service Objects must derive from IMitMServiceObject");
/* This will be for the actual session. */
Service forward_service;
IpcParsedCommand cur_out_r;
u32 mitm_domain_id = 0;
bool got_first_message;
public:
MitMSession<T>(MitMServer<T> *s, Handle s_h, Handle c_h, const char *srv) : ISession<T>(s, s_h, c_h, NULL, 0), got_first_message(false) {
this->server = s;
this->server_handle = s_h;
this->client_handle = c_h;
if (R_FAILED(smMitMGetService(&forward_service, srv))) {
/* TODO: Panic. */
}
size_t pointer_buffer_size = 0;
if (R_FAILED(ipcQueryPointerBufferSize(forward_service.handle, &pointer_buffer_size))) {
/* TODO: Panic. */
}
this->service_object = std::make_shared<T>(&forward_service);
this->pointer_buffer.resize(pointer_buffer_size);
}
MitMSession<T>(MitMServer<T> *s, Handle s_h, Handle c_h, Handle f_h) : ISession<T>(s, s_h, c_h, NULL, 0), got_first_message(true) {
this->server = s;
this->server_handle = s_h;
this->client_handle = c_h;
serviceCreate(&this->forward_service, f_h);
size_t pointer_buffer_size = 0;
if (R_FAILED(ipcQueryPointerBufferSize(forward_service.handle, &pointer_buffer_size))) {
/* TODO: Panic. */
}
this->service_object = std::make_shared<T>(&forward_service);
this->pointer_buffer.resize(pointer_buffer_size);
}
virtual ~MitMSession() {
serviceClose(&forward_service);
}
Result handle_message(IpcParsedCommand &r) override {
IpcCommand c;
ipcInitialize(&c);
u64 cmd_id = ((u32 *)r.Raw)[2];
Result retval = 0xF601;
cur_out_r.NumHandles = 0;
Log(armGetTls(), 0x100);
u32 *cmdbuf = (u32 *)armGetTls();
if (r.CommandType == IpcCommandType_Close) {
Reboot();
}
if (r.CommandType == IpcCommandType_Request || r.CommandType == IpcCommandType_RequestWithContext) {
std::shared_ptr<IServiceObject> obj;
if (r.IsDomainMessage) {
obj = this->domain->get_domain_object(r.ThisObjectId);
if (obj != nullptr && r.MessageType == DomainMessageType_Close) {
if (r.ThisObjectId == this->mitm_domain_id) {
Reboot();
}
this->domain->delete_object(r.ThisObjectId);
struct {
u64 magic;
u64 result;
} *o_resp;
o_resp = (decltype(o_resp)) ipcPrepareHeaderForDomain(&c, sizeof(*o_resp), 0);
*(DomainMessageHeader *)((uintptr_t)o_resp - sizeof(DomainMessageHeader)) = {0};
o_resp->magic = SFCO_MAGIC;
o_resp->result = 0x0;
Log(armGetTls(), 0x100);
return o_resp->result;
}
} else {
obj = this->service_object;
}
if (obj != nullptr) {
retval = obj->dispatch(r, c, cmd_id, (u8 *)this->pointer_buffer.data(), this->pointer_buffer.size());
if (R_SUCCEEDED(retval)) {
if (r.IsDomainMessage) {
ipcParseForDomain(&cur_out_r);
} else {
ipcParse(&cur_out_r);
}
return retval;
}
}
} else if (r.CommandType == IpcCommandType_Control || r.CommandType == IpcCommandType_ControlWithContext) {
/* Ipc Clone Current Object. */
retval = serviceIpcDispatch(&forward_service);
Log(armGetTls(), 0x100);
if (R_SUCCEEDED(retval)) {
ipcParse(&cur_out_r);
struct {
u64 magic;
u64 result;
} *resp = (decltype(resp))cur_out_r.Raw;
retval = resp->result;
if ((cmd_id == IpcCtrl_Cmd_CloneCurrentObject || cmd_id == IpcCtrl_Cmd_CloneCurrentObjectEx)) {
if (R_SUCCEEDED(retval)) {
Handle s_h;
Handle c_h;
Result rc;
if (R_FAILED((rc = svcCreateSession(&s_h, &c_h, 0, 0)))) {
fatalSimple(rc);
}
if (cur_out_r.NumHandles != 1) {
Reboot();
}
MitMSession<T> *new_sess = new MitMSession<T>((MitMServer<T> *)this->server, s_h, c_h, cur_out_r.Handles[0]);
new_sess->service_object = this->service_object;
if (this->is_domain) {
new_sess->is_domain = true;
new_sess->domain = this->domain;
new_sess->mitm_domain_id = this->mitm_domain_id;
new_sess->forward_service.type = this->forward_service.type;
new_sess->forward_service.object_id = this->forward_service.object_id;
}
this->get_manager()->add_waitable(new_sess);
ipcSendHandleMove(&c, c_h);
struct {
u64 magic;
u64 result;
} *o_resp;
o_resp = (decltype(o_resp)) ipcPrepareHeader(&c, sizeof(*o_resp));
o_resp->magic = SFCO_MAGIC;
o_resp->result = 0x0;
}
}
}
Log(armGetTls(), 0x100);
return retval;
}
/* 0xF601 --> Dispatch onwards. */
if (retval == 0xF601) {
/* Patch PID Descriptor, if relevant. */
if (r.HasPid) {
/* [ctrl 0] [ctrl 1] [handle desc 0] [pid low] [pid high] */
cmdbuf[4] = 0xFFFE0000UL | (cmdbuf[4] & 0xFFFFUL);
}
Log(armGetTls(), 0x100);
retval = serviceIpcDispatch(&forward_service);
if (R_SUCCEEDED(retval)) {
if (r.IsDomainMessage) {
ipcParseForDomain(&cur_out_r);
} else {
ipcParse(&cur_out_r);
}
struct {
u64 magic;
u64 result;
} *resp = (decltype(resp))cur_out_r.Raw;
retval = resp->result;
}
}
Log(armGetTls(), 0x100);
Log(&cmd_id, sizeof(u64));
u64 retval_for_log = retval;
Log(&retval_for_log, sizeof(u64));
if (R_FAILED(retval)) {
// Reboot();
}
if (retval == 0xA08) {
Reboot();
}
return retval;
}
void postprocess(IpcParsedCommand &r, u64 cmd_id) override {
if (this->active_object == this->service_object && (r.CommandType == IpcCommandType_Request || r.CommandType == IpcCommandType_RequestWithContext)) {
IpcCommand c;
ipcInitialize(&c);
this->service_object->postprocess(cur_out_r, c, cmd_id, (u8 *)this->pointer_buffer.data(), this->pointer_buffer.size());
} else if (r.CommandType == IpcCommandType_Control || r.CommandType == IpcCommandType_ControlWithContext) {
if (cmd_id == IpcCtrl_Cmd_ConvertCurrentObjectToDomain) {
this->is_domain = true;
this->domain = std::make_shared<DomainOwner>();
struct {
u64 magic;
u64 result;
u32 domain_id;
} *resp = (decltype(resp))cur_out_r.Raw;
Result rc;
if (R_FAILED((rc = this->domain->set_object(this->service_object, resp->domain_id)))) {
fatalSimple(rc);
}
this->mitm_domain_id = resp->domain_id;
this->forward_service.type = ServiceType_Domain;
this->forward_service.object_id = resp->domain_id;
}
}
}
void cleanup() override {
/* Clean up copy handles. */
for (unsigned int i = 0; i < cur_out_r.NumHandles; i++) {
if (cur_out_r.WasHandleCopied[i]) {
svcCloseHandle(cur_out_r.Handles[i]);
}
}
}
};
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