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pm/sm: add ability to forward declare mitm'd services (closes #557)

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Michael Scire 2019-07-11 22:23:23 -07:00 committed by SciresM
parent 6777dd9b38
commit fc7f06dc78
6 changed files with 198 additions and 37 deletions
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2
stratosphere/libstratosphere

@ -1 +1 @@
Subproject commit b9e53052732699e1f7af8ad061181e3798c3f8fc
Subproject commit 69dbb69e0b32aa7b977e144fe7a8355868abd04a

97
stratosphere/pm/source/boot2/boot2_api.cpp
View file

@ -134,6 +134,10 @@ namespace sts::boot2 {
return true;
}
inline bool IsNewLine(char c) {
return c == '\r' || c == '\n';
}
void LaunchTitle(u64 *out_process_id, const ncm::TitleLocation &loc, u32 launch_flags) {
u64 process_id = 0;
@ -201,7 +205,8 @@ namespace sts::boot2 {
}
}
void LaunchFlaggedProgramsFromSdCard() {
template<typename F>
void IterateOverFlaggedTitlesOnSdCard(F f) {
/* Validate that the titles directory exists. */
DIR *titles_dir = opendir("sdmc:/atmosphere/titles");
if (titles_dir == nullptr) {
@ -216,19 +221,90 @@ namespace sts::boot2 {
if (std::strlen(ent->d_name) == 2 * sizeof(ncm::TitleId) && IsHexadecimal(ent->d_name)) {
/* Check if we've already launched the title. */
ncm::TitleId title_id{std::strtoul(ent->d_name, nullptr, 16)};
if (pm::info::HasLaunchedTitle(title_id)) {
continue;
}
/* Check if the title is flagged. */
if (!cfg::HasTitleSpecificFlag(title_id, "boot2")) {
continue;
}
/* Actually launch the title. */
/* Call the iteration callback. */
f(title_id);
}
}
}
void DetectAndDeclareFutureMitms() {
IterateOverFlaggedTitlesOnSdCard([](ncm::TitleId title_id) {
/* When we find a flagged program, check if it has a mitm list. */
char mitm_list[0x400];
size_t mitm_list_size = 0;
/* Read the mitm list off the SD card. */
{
char path[FS_MAX_PATH];
std::snprintf(mitm_list, sizeof(mitm_list), "sdmc:/atmosphere/titles/%016lx/mitm.lst", static_cast<u64>(title_id));
FILE *f = fopen(path, "rb");
if (f == nullptr) {
return;
}
mitm_list_size = static_cast<size_t>(fread(mitm_list, 1, sizeof(mitm_list), f));
fclose(f);
}
/* Validate read size. */
if (mitm_list_size > sizeof(mitm_list) || mitm_list_size == 0) {
return;
}
/* Iterate over the contents of the file. */
/* We expect one service name per non-empty line, 1-8 characters. */
size_t offset = 0;
while (offset < mitm_list_size) {
/* Continue to the start of the next name. */
while (IsNewLine(mitm_list[offset])) {
offset++;
}
if (offset >= mitm_list_size) {
break;
}
/* Get the length of the current name. */
size_t name_len;
for (name_len = 0; name_len <= sizeof(sm::ServiceName) && offset + name_len < mitm_list_size; name_len++) {
if (IsNewLine(mitm_list[offset + name_len])) {
break;
}
}
/* Allow empty lines. */
if (name_len == 0) {
continue;
}
/* Don't allow invalid lines. */
if (name_len > sizeof(sm::ServiceName)) {
std::abort();
}
/* Declare the service. */
R_ASSERT(sm::mitm::DeclareFutureMitm(sm::ServiceName::Encode(mitm_list + offset, name_len)));
/* Advance to the next line. */
offset += name_len;
}
});
}
void LaunchFlaggedProgramsOnSdCard() {
IterateOverFlaggedTitlesOnSdCard([](ncm::TitleId title_id) {
/* Check if we've already launched the title. */
if (pm::info::HasLaunchedTitle(title_id)) {
return;
}
/* Launch the title. */
LaunchTitle(nullptr, ncm::TitleLocation::Make(title_id, ncm::StorageId::None), 0);
}
}
});
}
}
@ -258,9 +334,13 @@ namespace sts::boot2 {
if (maintenance) {
pm::bm::SetMaintenanceBoot();
}
/* Launch Atmosphere dmnt, using FsStorageId_None to force SD card boot. */
LaunchTitle(nullptr, ncm::TitleLocation::Make(ncm::TitleId::Dmnt, ncm::StorageId::None), 0);
/* Check for and forward declare non-atmosphere mitm modules. */
DetectAndDeclareFutureMitms();
/* Launch additional programs. */
if (maintenance) {
LaunchList(AdditionalMaintenanceLaunchPrograms, NumAdditionalMaintenanceLaunchPrograms);
@ -272,9 +352,8 @@ namespace sts::boot2 {
LaunchList(AdditionalLaunchPrograms, NumAdditionalLaunchPrograms);
}
/* Launch user programs off of the SD. */
LaunchFlaggedProgramsFromSdCard();
LaunchFlaggedProgramsOnSdCard();
/* We no longer need the SD card. */
fsdevUnmountAll();

124
stratosphere/sm/source/impl/sm_service_manager.cpp
View file

@ -29,6 +29,7 @@ namespace sts::sm::impl {
/* Constexpr definitions. */
static constexpr size_t ProcessCountMax = 0x40;
static constexpr size_t ServiceCountMax = 0x100;
static constexpr size_t FutureMitmCountMax = 0x20;
static constexpr size_t AccessControlSizeMax = 0x200;
/* Types. */
@ -182,6 +183,7 @@ namespace sts::sm::impl {
/* Static members. */
ProcessInfo g_process_list[ProcessCountMax];
ServiceInfo g_service_list[ServiceCountMax];
ServiceName g_future_mitm_list[FutureMitmCountMax];
InitialProcessIdLimits g_initial_process_id_limits;
bool g_ended_initial_defers;
@ -203,6 +205,14 @@ namespace sts::sm::impl {
return GetProcessInfo(pid) != nullptr;
}
bool IsInitialProcess(u64 pid) {
return g_initial_process_id_limits.IsInitialProcess(pid);
}
bool IsValidProcessId(u64 pid) {
return pid != InvalidProcessId;
}
ServiceInfo *GetServiceInfo(ServiceName service_name) {
for (size_t i = 0; i < ServiceCountMax; i++) {
if (g_service_list[i].name == service_name) {
@ -220,6 +230,53 @@ namespace sts::sm::impl {
return GetServiceInfo(service) != nullptr;
}
bool HasMitm(ServiceName service) {
const ServiceInfo *service_info = GetServiceInfo(service);
return service_info != nullptr && IsValidProcessId(service_info->mitm_pid);
}
ncm::TitleId GetTitleIdForMitm(u64 pid) {
/* Anything that can request a mitm session must have a process info. */
const auto process_info = GetProcessInfo(pid);
if (process_info == nullptr) {
std::abort();
}
return process_info->tid;
}
bool IsMitmDisallowed(ncm::TitleId title_id) {
/* Mitm used on certain titles can prevent the boot process from completing. */
/* TODO: Is there a way to do this that's less hardcoded? Needs design thought. */
return title_id == ncm::TitleId::Loader || title_id == ncm::TitleId::Boot || title_id == ncm::TitleId::AtmosphereMitm;
}
Result AddFutureMitmDeclaration(ServiceName service) {
for (size_t i = 0; i < FutureMitmCountMax; i++) {
if (g_future_mitm_list[i] == InvalidServiceName) {
g_future_mitm_list[i] = service;
return ResultSuccess;
}
}
return ResultSmInsufficientServices;
}
bool HasFutureMitmDeclaration(ServiceName service) {
for (size_t i = 0; i < FutureMitmCountMax; i++) {
if (g_future_mitm_list[i] == service) {
return true;
}
}
return false;
}
void ClearFutureMitmDeclaration(ServiceName service) {
for (size_t i = 0; i < FutureMitmCountMax; i++) {
if (g_future_mitm_list[i] == service) {
g_future_mitm_list[i] = InvalidServiceName;
}
}
}
void GetServiceInfoRecord(ServiceRecord *out_record, const ServiceInfo *service_info) {
out_record->service = service_info->name;
out_record->owner_pid = service_info->owner_pid;
@ -287,23 +344,6 @@ namespace sts::sm::impl {
return ResultSuccess;
}
bool IsInitialProcess(u64 pid) {
return g_initial_process_id_limits.IsInitialProcess(pid);
}
bool IsValidProcessId(u64 pid) {
return pid != InvalidProcessId;
}
ncm::TitleId GetTitleIdForMitm(u64 pid) {
/* Anything that can request a mitm session must have a process info. */
const auto process_info = GetProcessInfo(pid);
if (process_info == nullptr) {
std::abort();
}
return process_info->tid;
}
bool ShouldDeferForInit(ServiceName service) {
/* Once end has been called, we're done. */
if (g_ended_initial_defers) {
@ -315,7 +355,7 @@ namespace sts::sm::impl {
return service == ServiceName::Encode("fsp-srv");
}
Result GetMitmServiceHandleImpl(Handle *out, ServiceInfo *service_info, u64 pid) {
Result GetMitmServiceHandleImpl(Handle *out, ServiceInfo *service_info, u64 pid, ncm::TitleId title_id) {
/* Send command to query if we should mitm. */
{
IpcCommand c;
@ -329,7 +369,7 @@ namespace sts::sm::impl {
info->magic = SFCI_MAGIC;
info->cmd_id = 65000;
info->pid = pid;
info->tid = GetTitleIdForMitm(pid);
info->tid = title_id;
R_TRY(ipcDispatch(service_info->mitm_query_h.Get()));
}
@ -372,14 +412,19 @@ namespace sts::sm::impl {
/* Clear handle output. */
*out = INVALID_HANDLE;
/* If not mitm'd or mitm service is requesting, get normal session. */
if (!IsValidProcessId(service_info->mitm_pid) || service_info->mitm_pid == pid) {
return svcConnectToPort(out, service_info->port_h.Get());
/* Check if we should return a mitm handle. */
if (IsValidProcessId(service_info->mitm_pid) && service_info->mitm_pid != pid) {
/* Get title id, ensure that we're allowed to mitm the given title. */
const ncm::TitleId title_id = GetTitleIdForMitm(pid);
if (!IsMitmDisallowed(title_id)) {
/* We're mitm'd. Assert, because mitm service host dead is an error state. */
R_ASSERT(GetMitmServiceHandleImpl(out, service_info, pid, title_id));
return ResultSuccess;
}
}
/* We're mitm'd. Assert, because mitm service host dead is an error state. */
R_ASSERT(GetMitmServiceHandleImpl(out, service_info, pid));
return ResultSuccess;
/* We're not returning a mitm handle, so just return a normal port handle. */
return svcConnectToPort(out, service_info->port_h.Get());
}
Result RegisterServiceImpl(Handle *out, u64 pid, ServiceName service, size_t max_sessions, bool is_light) {
@ -501,7 +546,7 @@ namespace sts::sm::impl {
/* Get service info. Check to see if we need to defer this until later. */
ServiceInfo *service_info = GetServiceInfo(service);
if (service_info == nullptr || ShouldDeferForInit(service) || service_info->mitm_waiting_ack) {
if (service_info == nullptr || ShouldDeferForInit(service) || HasFutureMitmDeclaration(service) || service_info->mitm_waiting_ack) {
return ResultServiceFrameworkRequestDeferredByUser;
}
@ -637,6 +682,9 @@ namespace sts::sm::impl {
*out_query = qry_hnd.Move();
}
/* Clear the future declaration, if one exists. */
ClearFutureMitmDeclaration(service);
return ResultSuccess;
}
@ -668,6 +716,30 @@ namespace sts::sm::impl {
return ResultSuccess;
}
Result DeclareFutureMitm(u64 pid, ServiceName service) {
/* Validate service name. */
R_TRY(ValidateServiceName(service));
/* Check that the process is registered and allowed to register the service. */
if (!IsInitialProcess(pid)) {
ProcessInfo *proc = GetProcessInfo(pid);
if (proc == nullptr) {
return ResultSmInvalidClient;
}
R_TRY(ValidateAccessControl(AccessControlEntry(proc->access_control, proc->access_control_size), service, true, false));
}
/* Check that mitm hasn't already been registered or declared. */
if (HasMitm(service) || HasFutureMitmDeclaration(service)) {
return ResultSmAlreadyRegistered;
}
/* Try to forward declare it. */
R_TRY(AddFutureMitmDeclaration(service));
return ResultSuccess;
}
Result AcknowledgeMitmSession(u64 *out_pid, ncm::TitleId *out_tid, Handle *out_hnd, u64 pid, ServiceName service) {
/* Validate service name. */
R_TRY(ValidateServiceName(service));

1
stratosphere/sm/source/impl/sm_service_manager.hpp
View file

@ -38,6 +38,7 @@ namespace sts::sm::impl {
Result WaitMitm(ServiceName service);
Result InstallMitm(Handle *out, Handle *out_query, u64 pid, ServiceName service);
Result UninstallMitm(u64 pid, ServiceName service);
Result DeclareFutureMitm(u64 pid, ServiceName service);
Result AcknowledgeMitmSession(u64 *out_pid, ncm::TitleId *out_tid, Handle *out_hnd, u64 pid, ServiceName service);
/* Dmnt record extensions. */

6
stratosphere/sm/source/sm_user_service.cpp
View file

@ -75,6 +75,12 @@ namespace sts::sm {
return impl::WaitMitm(service);
}
Result UserService::AtmosphereDeclareFutureMitm(ServiceName service) {
R_TRY(this->EnsureInitialized());
return impl::DeclareFutureMitm(this->pid, service);
}
Result UserService::AtmosphereHasService(Out<bool> out, ServiceName service) {
R_TRY(this->EnsureInitialized());
return impl::HasService(out.GetPointer(), service);

3
stratosphere/sm/source/sm_user_service.hpp
View file

@ -38,6 +38,7 @@ namespace sts::sm {
AtmosphereAcknowledgeMitmSession = 65003,
AtmosphereHasMitm = 65004,
AtmosphereWaitMitm = 65005,
AtmosphereDeclareFutureMitm = 65006,
AtmosphereHasService = 65100,
AtmosphereWaitService = 65101,
@ -60,6 +61,7 @@ namespace sts::sm {
virtual Result AtmosphereAcknowledgeMitmSession(Out<u64> client_pid, Out<ncm::TitleId> client_tid, Out<MovedHandle> fwd_h, ServiceName service);
virtual Result AtmosphereHasMitm(Out<bool> out, ServiceName service);
virtual Result AtmosphereWaitMitm(ServiceName service);
virtual Result AtmosphereDeclareFutureMitm(ServiceName service);
virtual Result AtmosphereHasService(Out<bool> out, ServiceName service);
virtual Result AtmosphereWaitService(ServiceName service);
@ -75,6 +77,7 @@ namespace sts::sm {
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereAcknowledgeMitmSession),
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereHasMitm),
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereWaitMitm),
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereDeclareFutureMitm),
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereHasService),
MAKE_SERVICE_COMMAND_META(UserService, AtmosphereWaitService),