fs.mitm: Allow fsmitm.flag specification for mitm

This commit is contained in:
Michael Scire 2018-07-28 12:29:54 -07:00
parent a811b447ce
commit cd42f6dc18
4 changed files with 89 additions and 40 deletions

View file

@ -14,6 +14,8 @@
#include "mitm_query_service.hpp" #include "mitm_query_service.hpp"
#include "fsmitm_utils.hpp"
extern "C" { extern "C" {
extern u32 __start__; extern u32 __start__;
@ -89,6 +91,9 @@ void __appExit(void) {
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
Thread worker_thread = {0}; Thread worker_thread = {0};
Thread sd_initializer_thread = {0};
consoleDebugInit(debugDevice_SVC);
consoleDebugInit(debugDevice_SVC); consoleDebugInit(debugDevice_SVC);
if (R_FAILED(threadCreate(&worker_thread, &FsMitMWorker::Main, NULL, 0x20000, 45, 0))) { if (R_FAILED(threadCreate(&worker_thread, &FsMitMWorker::Main, NULL, 0x20000, 45, 0))) {
@ -98,6 +103,13 @@ int main(int argc, char **argv)
/* TODO: Panic. */ /* TODO: Panic. */
} }
if (R_FAILED(threadCreate(&sd_initializer_thread, &Utils::InitializeSdThreadFunc, NULL, 0x4000, 0x15, 0))) {
/* TODO: Panic. */
}
if (R_FAILED(threadStart(&sd_initializer_thread))) {
/* TODO: Panic. */
}
/* TODO: What's a good timeout value to use here? */ /* TODO: What's a good timeout value to use here? */
auto server_manager = std::make_unique<MultiThreadedWaitableManager>(1, U64_MAX, 0x20000); auto server_manager = std::make_unique<MultiThreadedWaitableManager>(1, U64_MAX, 0x20000);
//auto server_manager = std::make_unique<WaitableManager>(U64_MAX); //auto server_manager = std::make_unique<WaitableManager>(U64_MAX);

View file

@ -22,12 +22,7 @@ class FsMitMService : public IMitMServiceObject {
} }
static bool should_mitm(u64 pid, u64 tid) { static bool should_mitm(u64 pid, u64 tid) {
if (tid >= 0x0100000000010000ULL) { return tid >= 0x0100000000010000ULL || Utils::HasSdMitMFlag(tid);
return true;
}
bool has_romfs_content;
Result rc = Utils::HasSdRomfsContent(tid, &has_romfs_content);
return R_SUCCEEDED(rc) && has_romfs_content;
} }
FsMitMService *clone() override { FsMitMService *clone() override {

View file

@ -1,53 +1,88 @@
#include <switch.h> #include <switch.h>
#include <stratosphere.hpp> #include <stratosphere.hpp>
#include <atomic> #include <atomic>
#include <algorithm>
#include "sm_mitm.h" #include "sm_mitm.h"
#include "debug.hpp" #include "debug.hpp"
#include "fsmitm_utils.hpp" #include "fsmitm_utils.hpp"
static FsFileSystem g_sd_filesystem = {0}; static FsFileSystem g_sd_filesystem = {0};
static bool g_has_initialized = false; static std::vector<u64> g_mitm_flagged_tids;
static std::atomic_bool g_has_initialized = false;
static Result EnsureInitialized() { static bool IsHexadecimal(const char *str) {
if (g_has_initialized) { while (*str) {
return 0x0; if (('0' <= *str && *str <= '9') ||
('a' <= *str && *str <= 'f') ||
('A' <= *str && *str <= 'F')) {
str++;
} else {
return false;
}
}
return true;
} }
void Utils::InitializeSdThreadFunc(void *args) {
/* Get required services. */
Handle tmp_hnd = 0;
static const char * const required_active_services[] = {"pcv", "gpio", "pinmux", "psc:c"}; static const char * const required_active_services[] = {"pcv", "gpio", "pinmux", "psc:c"};
for (unsigned int i = 0; i < sizeof(required_active_services) / sizeof(required_active_services[0]); i++) { for (unsigned int i = 0; i < sizeof(required_active_services) / sizeof(required_active_services[0]); i++) {
Result rc = smMitMUninstall(required_active_services[i]); if (R_FAILED(smGetServiceOriginal(&tmp_hnd, smEncodeName(required_active_services[i])))) {
if (rc == 0xE15) { /* TODO: Panic */
return rc; } else {
} else if (R_FAILED(rc) && rc != 0x1015) { svcCloseHandle(tmp_hnd);
return rc;
} }
} }
Result rc = fsMountSdcard(&g_sd_filesystem); /* Mount SD. */
if (R_SUCCEEDED(rc)) { while (R_FAILED(fsMountSdcard(&g_sd_filesystem))) {
g_has_initialized = true; svcSleepThread(1000ULL);
} }
return rc;
/* Check for MitM flags. */
FsDir titles_dir;
if (R_SUCCEEDED(fsFsOpenDirectory(&g_sd_filesystem, "/atmosphere/titles", FS_DIROPEN_DIRECTORY, &titles_dir))) {
FsDirectoryEntry dir_entry;
FsFile f;
u64 read_entries;
while (R_SUCCEEDED((fsDirRead(&titles_dir, 0, &read_entries, 1, &dir_entry))) && read_entries == 1) {
if (strlen(dir_entry.name) == 0x10 && IsHexadecimal(dir_entry.name)) {
u64 title_id = strtoul(dir_entry.name, NULL, 16);
char title_path[FS_MAX_PATH] = {0};
strcpy(title_path, "sdmc:/atmosphere/titles/");
strcat(title_path, dir_entry.name);
strcat(title_path, "/fsmitm.flag");
if (R_SUCCEEDED(fsFsOpenFile(&g_sd_filesystem, title_path, FS_OPEN_READ, &f))) {
g_mitm_flagged_tids.push_back(title_id);
fsFileClose(&f);
}
}
}
fsDirClose(&titles_dir);
}
g_has_initialized = true;
svcExitThread();
} }
bool Utils::IsSdInitialized() { bool Utils::IsSdInitialized() {
return R_SUCCEEDED(EnsureInitialized()); return g_has_initialized;
} }
Result Utils::OpenSdFile(const char *fn, int flags, FsFile *out) { Result Utils::OpenSdFile(const char *fn, int flags, FsFile *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
return fsFsOpenFile(&g_sd_filesystem, fn, flags, out); return fsFsOpenFile(&g_sd_filesystem, fn, flags, out);
} }
Result Utils::OpenSdFileForAtmosphere(u64 title_id, const char *fn, int flags, FsFile *out) { Result Utils::OpenSdFileForAtmosphere(u64 title_id, const char *fn, int flags, FsFile *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
char path[FS_MAX_PATH]; char path[FS_MAX_PATH];
@ -60,27 +95,24 @@ Result Utils::OpenSdFileForAtmosphere(u64 title_id, const char *fn, int flags, F
} }
Result Utils::OpenRomFSSdFile(u64 title_id, const char *fn, int flags, FsFile *out) { Result Utils::OpenRomFSSdFile(u64 title_id, const char *fn, int flags, FsFile *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
return OpenRomFSFile(&g_sd_filesystem, title_id, fn, flags, out); return OpenRomFSFile(&g_sd_filesystem, title_id, fn, flags, out);
} }
Result Utils::OpenSdDir(const char *path, FsDir *out) { Result Utils::OpenSdDir(const char *path, FsDir *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
return fsFsOpenDirectory(&g_sd_filesystem, path, FS_DIROPEN_DIRECTORY | FS_DIROPEN_FILE, out); return fsFsOpenDirectory(&g_sd_filesystem, path, FS_DIROPEN_DIRECTORY | FS_DIROPEN_FILE, out);
} }
Result Utils::OpenSdDirForAtmosphere(u64 title_id, const char *path, FsDir *out) { Result Utils::OpenSdDirForAtmosphere(u64 title_id, const char *path, FsDir *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
char safe_path[FS_MAX_PATH]; char safe_path[FS_MAX_PATH];
@ -93,9 +125,8 @@ Result Utils::OpenSdDirForAtmosphere(u64 title_id, const char *path, FsDir *out)
} }
Result Utils::OpenRomFSSdDir(u64 title_id, const char *path, FsDir *out) { Result Utils::OpenRomFSSdDir(u64 title_id, const char *path, FsDir *out) {
Result rc; if (!IsSdInitialized()) {
if (R_FAILED((rc = EnsureInitialized()))) { return 0xFA202;
return rc;
} }
return OpenRomFSDir(&g_sd_filesystem, title_id, path, out); return OpenRomFSDir(&g_sd_filesystem, title_id, path, out);
@ -137,3 +168,10 @@ Result Utils::HasSdRomfsContent(u64 title_id, bool *out) {
fsDirClose(&dir); fsDirClose(&dir);
return rc; return rc;
} }
bool Utils::HasSdMitMFlag(u64 tid) {
if (IsSdInitialized()) {
return std::find(g_mitm_flagged_tids.begin(), g_mitm_flagged_tids.end(), tid) != g_mitm_flagged_tids.end();
}
return false;
}

View file

@ -17,4 +17,8 @@ class Utils {
static Result OpenRomFSDir(FsFileSystem *fs, u64 title_id, const char *path, FsDir *out); static Result OpenRomFSDir(FsFileSystem *fs, u64 title_id, const char *path, FsDir *out);
static Result HasSdRomfsContent(u64 title_id, bool *out); static Result HasSdRomfsContent(u64 title_id, bool *out);
/* SD card Initialization + MitM detection. */
static void InitializeSdThreadFunc(void *args);
static bool HasSdMitMFlag(u64 tid);
}; };