mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-17 20:37:24 +01:00
327 lines
9.0 KiB
C++
327 lines
9.0 KiB
C++
#include <switch.h>
|
|
#include <algorithm>
|
|
#include <stratosphere/servicesession.hpp>
|
|
#include "sm_registration.hpp"
|
|
|
|
static Registration::Process g_process_list[REGISTRATION_LIST_MAX_PROCESS] = {0};
|
|
static Registration::Service g_service_list[REGISTRATION_LIST_MAX_SERVICE] = {0};
|
|
|
|
static u64 g_initial_process_id_low = 0;
|
|
static u64 g_initial_process_id_high = 0;
|
|
static bool g_determined_initial_process_ids = false;
|
|
|
|
u64 GetServiceNameLength(u64 service) {
|
|
u64 service_name_len = 0;
|
|
while (service & 0xFF) {
|
|
service_name_len++;
|
|
service >>= 8;
|
|
}
|
|
return service_name_len;
|
|
}
|
|
|
|
/* Utilities. */
|
|
Registration::Process *Registration::GetProcessForPid(u64 pid) {
|
|
for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_PROCESS; i++) {
|
|
if (g_process_list[i].pid == pid) {
|
|
return &g_process_list[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
Registration::Process *Registration::GetFreeProcess() {
|
|
return GetProcessForPid(0);
|
|
}
|
|
|
|
Registration::Service *Registration::GetService(u64 service) {
|
|
for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_SERVICE; i++) {
|
|
if (g_service_list[i].service_name == service) {
|
|
return &g_service_list[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
Registration::Service *Registration::GetFreeService() {
|
|
return GetService(0);
|
|
}
|
|
|
|
bool Registration::IsValidForSac(u8 *sac, size_t sac_size, u64 service, bool is_host) {
|
|
u8 cur_ctrl;
|
|
u64 cur_service;
|
|
u64 service_for_compare;
|
|
bool cur_is_host;
|
|
size_t remaining = sac_size;
|
|
while (remaining) {
|
|
cur_ctrl = *sac++;
|
|
remaining--;
|
|
size_t cur_size = (cur_ctrl & 7) + 1;
|
|
if (cur_size > remaining) {
|
|
break;
|
|
}
|
|
cur_is_host = (cur_ctrl & 0x80) != 0;
|
|
cur_service = 0;
|
|
for (unsigned int i = 0; i < cur_size; i++) {
|
|
cur_service |= ((u64)sac[i]) << (8 * i);
|
|
}
|
|
/* Check if the last byte is a wildcard ('*') */
|
|
service_for_compare = service;
|
|
if (sac[cur_size - 1] == '*') {
|
|
u64 mask = U64_MAX;
|
|
for (unsigned int i = 0; i < 8 - (cur_size - 1); i++) {
|
|
mask >>= 8;
|
|
}
|
|
/* Mask cur_service, service with 0xFF.. up until the wildcard. */
|
|
cur_service &= mask;
|
|
service_for_compare &= mask;
|
|
}
|
|
if (cur_service == service_for_compare && (!is_host || cur_is_host)) {
|
|
return true;
|
|
}
|
|
sac += cur_size;
|
|
remaining -= cur_size;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
bool Registration::ValidateSacAgainstRestriction(u8 *r_sac, size_t r_sac_size, u8 *sac, size_t sac_size) {
|
|
u8 cur_ctrl;
|
|
u64 cur_service;
|
|
bool cur_is_host;
|
|
size_t remaining = sac_size;
|
|
while (remaining) {
|
|
cur_ctrl = *sac++;
|
|
remaining--;
|
|
size_t cur_size = (cur_ctrl & 7) + 1;
|
|
if (cur_size > remaining) {
|
|
break;
|
|
}
|
|
cur_is_host = (cur_ctrl & 0x80) != 0;
|
|
cur_service = 0;
|
|
for (unsigned int i = 0; i < cur_size; i++) {
|
|
cur_service |= ((u64)sac[i]) << (8 * i);
|
|
}
|
|
if (!IsValidForSac(r_sac, r_sac_size, cur_service, cur_is_host)) {
|
|
return false;
|
|
}
|
|
sac += cur_size;
|
|
remaining -= cur_size;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void Registration::CacheInitialProcessIdLimits() {
|
|
if (g_determined_initial_process_ids) {
|
|
return;
|
|
}
|
|
if (kernelAbove500()) {
|
|
svcGetSystemInfo(&g_initial_process_id_low, 2, 0, 0);
|
|
svcGetSystemInfo(&g_initial_process_id_high, 2, 0, 0);
|
|
} else {
|
|
g_initial_process_id_low = 0;
|
|
g_initial_process_id_high = REGISTRATION_INITIAL_PID_MAX;
|
|
}
|
|
g_determined_initial_process_ids = true;
|
|
}
|
|
|
|
bool Registration::IsInitialProcess(u64 pid) {
|
|
CacheInitialProcessIdLimits();
|
|
return g_initial_process_id_low <= pid && pid <= g_initial_process_id_high;
|
|
}
|
|
|
|
u64 Registration::GetInitialProcessId() {
|
|
CacheInitialProcessIdLimits();
|
|
return g_initial_process_id_low;
|
|
}
|
|
|
|
/* Process management. */
|
|
Result Registration::RegisterProcess(u64 pid, u8 *acid_sac, size_t acid_sac_size, u8 *aci0_sac, size_t aci0_sac_size) {
|
|
Registration::Process *proc = GetFreeProcess();
|
|
if (aci0_sac_size > REGISTRATION_MAX_SAC_SIZE) {
|
|
return 0x1215;
|
|
}
|
|
|
|
if (proc == NULL) {
|
|
return 0x215;
|
|
}
|
|
|
|
if (aci0_sac_size && !ValidateSacAgainstRestriction(acid_sac, acid_sac_size, aci0_sac, aci0_sac_size)) {
|
|
return 0x1015;
|
|
}
|
|
|
|
proc->pid = pid;
|
|
proc->sac_size = aci0_sac_size;
|
|
std::copy(aci0_sac, aci0_sac + aci0_sac_size, proc->sac);
|
|
return 0;
|
|
}
|
|
|
|
Result Registration::UnregisterProcess(u64 pid) {
|
|
Registration::Process *proc = GetProcessForPid(pid);
|
|
if (proc == NULL) {
|
|
return 0x415;
|
|
}
|
|
|
|
proc->pid = 0;
|
|
return 0;
|
|
}
|
|
|
|
/* Service management. */
|
|
bool Registration::HasService(u64 service) {
|
|
for (unsigned int i = 0; i < REGISTRATION_LIST_MAX_SERVICE; i++) {
|
|
if (g_service_list[i].service_name == service) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Result Registration::GetServiceHandle(u64 service, Handle *out) {
|
|
Registration::Service *target_service = GetService(service);
|
|
if (target_service == NULL) {
|
|
/* Note: This defers the result until later. */
|
|
return RESULT_DEFER_SESSION;
|
|
}
|
|
|
|
*out = 0;
|
|
Result rc = svcConnectToPort(out, target_service->port_h);
|
|
if (R_FAILED(rc)) {
|
|
if ((rc & 0x3FFFFF) == 0xE01) {
|
|
return 0x615;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
Result Registration::GetServiceForPid(u64 pid, u64 service, Handle *out) {
|
|
if (!service) {
|
|
return 0xC15;
|
|
}
|
|
|
|
u64 service_name_len = GetServiceNameLength(service);
|
|
|
|
/* If the service has bytes after a null terminator, that's no good. */
|
|
if (service_name_len != 8 && (service >> (8 * service_name_len))) {
|
|
return 0xC15;
|
|
}
|
|
|
|
if (!IsInitialProcess(pid)) {
|
|
Registration::Process *proc = GetProcessForPid(pid);
|
|
if (proc == NULL) {
|
|
return 0x415;
|
|
}
|
|
|
|
if (!IsValidForSac(proc->sac, proc->sac_size, service, false)) {
|
|
return 0x1015;
|
|
}
|
|
}
|
|
|
|
return GetServiceHandle(service, out);
|
|
}
|
|
|
|
Result Registration::RegisterServiceForPid(u64 pid, u64 service, u64 max_sessions, bool is_light, Handle *out) {
|
|
if (!service) {
|
|
return 0xC15;
|
|
}
|
|
|
|
u64 service_name_len = GetServiceNameLength(service);
|
|
|
|
/* If the service has bytes after a null terminator, that's no good. */
|
|
if (service_name_len != 8 && (service >> (8 * service_name_len))) {
|
|
return 0xC15;
|
|
}
|
|
|
|
if (!IsInitialProcess(pid)) {
|
|
Registration::Process *proc = GetProcessForPid(pid);
|
|
if (proc == NULL) {
|
|
return 0x415;
|
|
}
|
|
|
|
if (!IsValidForSac(proc->sac, proc->sac_size, service, true)) {
|
|
return 0x1015;
|
|
}
|
|
}
|
|
|
|
if (HasService(service)) {
|
|
return 0x815;
|
|
}
|
|
|
|
Registration::Service *free_service = GetFreeService();
|
|
if (free_service == NULL) {
|
|
return 0xA15;
|
|
}
|
|
|
|
*out = 0;
|
|
*free_service = (const Registration::Service){0};
|
|
Result rc = svcCreatePort(out, &free_service->port_h, max_sessions, is_light, (char *)&free_service->service_name);
|
|
|
|
if (R_SUCCEEDED(rc)) {
|
|
free_service->service_name = service;
|
|
free_service->owner_pid = pid;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
Result Registration::RegisterServiceForSelf(u64 service, u64 max_sessions, bool is_light, Handle *out) {
|
|
u64 pid;
|
|
Result rc = svcGetProcessId(&pid, CUR_PROCESS_HANDLE);
|
|
if (R_FAILED(rc)) {
|
|
return rc;
|
|
}
|
|
|
|
u64 service_name_len = GetServiceNameLength(service);
|
|
|
|
/* If the service has bytes after a null terminator, that's no good. */
|
|
if (service_name_len != 8 && (service >> (8 * service_name_len))) {
|
|
return 0xC15;
|
|
}
|
|
|
|
if (HasService(service)) {
|
|
return 0x815;
|
|
}
|
|
|
|
Registration::Service *free_service = GetFreeService();
|
|
if (free_service == NULL) {
|
|
return 0xA15;
|
|
}
|
|
|
|
*out = 0;
|
|
*free_service = (const Registration::Service){0};
|
|
rc = svcCreatePort(out, &free_service->port_h, max_sessions, is_light, (char *)&free_service->service_name);
|
|
|
|
if (R_SUCCEEDED(rc)) {
|
|
free_service->service_name = service;
|
|
free_service->owner_pid = pid;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
Result Registration::UnregisterServiceForPid(u64 pid, u64 service) {
|
|
if (!service) {
|
|
return 0xC15;
|
|
}
|
|
|
|
u64 service_name_len = GetServiceNameLength(service);
|
|
|
|
/* If the service has bytes after a null terminator, that's no good. */
|
|
if (service_name_len != 8 && (service >> (8 * service_name_len))) {
|
|
return 0xC15;
|
|
}
|
|
|
|
Registration::Service *target_service = GetService(service);
|
|
if (target_service == NULL) {
|
|
return 0xE15;
|
|
}
|
|
|
|
if (!IsInitialProcess(pid) && target_service->owner_pid != pid) {
|
|
return 0x1015;
|
|
}
|
|
|
|
svcCloseHandle(target_service->port_h);
|
|
*target_service = (const Registration::Service){0};
|
|
return 0;
|
|
}
|