#ifdef _WIN32 // prevent windows.h from including winsock.h, which will allow us to include winsock2.h #define WIN32_LEAN_AND_MEAN #include #include #include #include #else #ifndef LPM_NO_THRAEDS #include #endif #include #include #include #define MAX_PATH PATH_MAX #endif #include #include #include #include #include #include #include #include #include #include #include #include #ifndef LPM_NO_GIT #include #endif #ifndef LPM_NO_NETWORK #include #include #include #include #include #if MBEDTLS_VERSION_MAJOR < 3 #include #else #include #endif #ifdef MBEDTLS_DEBUG_C #include #endif #ifdef _WIN32 #include #else #include #include #include #ifdef __APPLE__ #include #endif #endif #endif #include #include #include #include #define HTTPS_RESPONSE_HEADER_BUFFER_LENGTH 8192 static int imin(int a, int b) { return a < b ? a : b; } static int imax(int a, int b) { return a > b ? a : b; } typedef struct { #if _WIN32 HANDLE thread; void* (*func)(void*); void* data; #else pthread_t thread; #endif } lpm_thread_t; typedef struct { #if _WIN32 CRITICAL_SECTION mutex; #else pthread_mutex_t mutex; #endif } lpm_mutex_t; static lpm_mutex_t* new_mutex() { lpm_mutex_t* mutex = malloc(sizeof(lpm_mutex_t)); #ifndef LPM_NO_THREADS #if _WIN32 InitializeCriticalSection(&mutex->mutex); #else pthread_mutex_init(&mutex->mutex, NULL); #endif #endif return mutex; } static void free_mutex(lpm_mutex_t* mutex) { #ifndef LPM_NO_THREADS #if _WIN32 DeleteCriticalSection(&mutex->mutex); #else pthread_mutex_destroy(&mutex->mutex); #endif #endif free(mutex); } static void lock_mutex(lpm_mutex_t* mutex) { #ifndef LPM_NO_THREADS #if _WIN32 EnterCriticalSection(&mutex->mutex); #else pthread_mutex_lock(&mutex->mutex); #endif #endif } static void unlock_mutex(lpm_mutex_t* mutex) { #ifndef LPM_NO_THREADS #if _WIN32 LeaveCriticalSection(&mutex->mutex); #else pthread_mutex_unlock(&mutex->mutex); #endif #endif } #if _WIN32 static WINAPI unsigned int windows_thread_callback(void* data) { lpm_thread_t* thread = data; thread->data = thread->func(thread->data); return 0; } #endif static lpm_thread_t* create_thread(void* (*func)(void*), void* data) { lpm_thread_t* thread = malloc(sizeof(lpm_thread_t)); #ifndef LPM_NO_THREADS #if _WIN32 thread->func = func; thread->data = data; thread->thread = (HANDLE) _beginthreadex(NULL, 0, &windows_thread_callback, thread, 0, NULL); #else pthread_create(&thread->thread, NULL, func, data); #endif #else func(data); #endif return thread; } static void* join_thread(lpm_thread_t* thread) { if (!thread) return NULL; void* retval = NULL; #ifndef LPM_NO_THREADS #if _WIN32 WaitForSingleObject(thread->thread, INFINITE); CloseHandle(thread->thread); retval = thread->data; #else pthread_join(thread->thread, &retval); #endif #endif free(thread); return retval; } #if _WIN32 static LPCWSTR lua_toutf16(lua_State* L, const char* str) { if (str && str[0] == 0) return L""; int len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); if (len > 0) { LPWSTR output = (LPWSTR) malloc(sizeof(WCHAR) * len); if (output) { len = MultiByteToWideChar(CP_UTF8, 0, str, -1, output, len); if (len > 0) { lua_pushlstring(L, (char*)output, len * 2); free(output); return (LPCWSTR)lua_tostring(L, -1); } free(output); } } luaL_error(L, "can't convert utf8 string"); return NULL; } static const char* lua_toutf8(lua_State* L, LPCWSTR str) { int len = WideCharToMultiByte(CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL); if (len > 0) { char* output = (char *) malloc(sizeof(char) * len); if (output) { len = WideCharToMultiByte(CP_UTF8, 0, str, -1, output, len, NULL, NULL); if (len) { lua_pushlstring(L, output, len - 1); free(output); return lua_tostring(L, -1); } free(output); } } luaL_error(L, "can't convert utf16 string"); return NULL; } static const int luaL_win32_error(lua_State* L, DWORD error_id, const char* message, ...) { va_list va; va_start(va, message); lua_pushvfstring(L, message, va); va_end(va); wchar_t message_buffer[2048]; size_t size = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error_id, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), message_buffer, 2048, NULL); lua_pushliteral(L, ": "); lua_toutf8(L, message_buffer); lua_concat(L, 3); return lua_error(L); } #endif static FILE* lua_fopen(lua_State* L, const char* path, const char* mode) { #ifdef _WIN32 FILE* file = _wfopen(lua_toutf16(L, path), lua_toutf16(L, mode)); lua_pop(L, 2); return file; #else return fopen(path, mode); #endif } /** Hashing stuff; would have taken from mbedtls, but cannot guarantee it'll be there. **/ static char hex_digits[] = "0123456789abcdef"; static void lua_pushhexstring(lua_State* L, const unsigned char* buffer, size_t length) { char hex_buffer[length * 2 + 1]; for (size_t i = 0; i < length; ++i) { hex_buffer[i*2+0] = hex_digits[buffer[i] >> 4]; hex_buffer[i*2+1] = hex_digits[buffer[i] & 0xF]; } lua_pushlstring(L, hex_buffer, length * 2); } typedef struct { unsigned char data[64]; int datalen; unsigned long long bitlen; int state[8]; } SHA256_CTX; #define ROTLEFT(a,b) (((a) << (b)) | ((a) >> (32-(b)))) #define ROTRIGHT(a,b) (((a) >> (b)) | ((a) << (32-(b)))) #define CH(x,y,z) (((x) & (y)) ^ (~(x) & (z))) #define MAJ(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) #define EP0(x) (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22)) #define EP1(x) (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25)) #define SIG0(x) (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3)) #define SIG1(x) (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10)) static void sha256_transform(SHA256_CTX *ctx, const unsigned char* data) { static const unsigned int k[64] = { 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5, 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174, 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da, 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967, 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85, 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070, 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3, 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 }; unsigned int a, b, c, d, e, f, g, h, i, j, t1, t2, m[64]; for (i = 0, j = 0; i < 16; ++i, j += 4) m[i] = (data[j] << 24) | (data[j + 1] << 16) | (data[j + 2] << 8) | (data[j + 3]); for ( ; i < 64; ++i) m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16]; a = ctx->state[0]; b = ctx->state[1]; c = ctx->state[2]; d = ctx->state[3]; e = ctx->state[4]; f = ctx->state[5]; g = ctx->state[6]; h = ctx->state[7]; for (i = 0; i < 64; ++i) { t1 = h + EP1(e) + CH(e,f,g) + k[i] + m[i]; t2 = EP0(a) + MAJ(a,b,c); h = g; g = f; f = e; e = d + t1; d = c; c = b; b = a; a = t1 + t2; } ctx->state[0] += a; ctx->state[1] += b; ctx->state[2] += c; ctx->state[3] += d; ctx->state[4] += e; ctx->state[5] += f; ctx->state[6] += g; ctx->state[7] += h; } static void sha256_init(SHA256_CTX *ctx) { ctx->datalen = 0; ctx->bitlen = 0; ctx->state[0] = 0x6a09e667; ctx->state[1] = 0xbb67ae85; ctx->state[2] = 0x3c6ef372; ctx->state[3] = 0xa54ff53a; ctx->state[4] = 0x510e527f; ctx->state[5] = 0x9b05688c; ctx->state[6] = 0x1f83d9ab; ctx->state[7] = 0x5be0cd19; } static void sha256_update(SHA256_CTX *ctx, const unsigned char* data, size_t len) { for (int i = 0; i < len; ++i) { ctx->data[ctx->datalen] = data[i]; ctx->datalen++; if (ctx->datalen == 64) { sha256_transform(ctx, ctx->data); ctx->bitlen += 512; ctx->datalen = 0; } } } static void sha256_final(SHA256_CTX *ctx, unsigned char* hash) { int i = ctx->datalen; // Pad whatever data is left in the buffer. if (ctx->datalen < 56) { ctx->data[i++] = 0x80; while (i < 56) ctx->data[i++] = 0x00; } else { ctx->data[i++] = 0x80; while (i < 64) ctx->data[i++] = 0x00; sha256_transform(ctx, ctx->data); memset(ctx->data, 0, 56); } // Append to the padding the total message's length in bits and transform. ctx->bitlen += ctx->datalen * 8; ctx->data[63] = ctx->bitlen; ctx->data[62] = ctx->bitlen >> 8; ctx->data[61] = ctx->bitlen >> 16; ctx->data[60] = ctx->bitlen >> 24; ctx->data[59] = ctx->bitlen >> 32; ctx->data[58] = ctx->bitlen >> 40; ctx->data[57] = ctx->bitlen >> 48; ctx->data[56] = ctx->bitlen >> 56; sha256_transform(ctx, ctx->data); // Since this implementation uses little endian byte ordering and SHA uses big endian, // reverse all the bytes when copying the final state to the output hash. for (i = 0; i < 4; ++i) { hash[i] = (ctx->state[0] >> (24 - i * 8)) & 0x000000ff; hash[i + 4] = (ctx->state[1] >> (24 - i * 8)) & 0x000000ff; hash[i + 8] = (ctx->state[2] >> (24 - i * 8)) & 0x000000ff; hash[i + 12] = (ctx->state[3] >> (24 - i * 8)) & 0x000000ff; hash[i + 16] = (ctx->state[4] >> (24 - i * 8)) & 0x000000ff; hash[i + 20] = (ctx->state[5] >> (24 - i * 8)) & 0x000000ff; hash[i + 24] = (ctx->state[6] >> (24 - i * 8)) & 0x000000ff; hash[i + 28] = (ctx->state[7] >> (24 - i * 8)) & 0x000000ff; } } static int lpm_hash(lua_State* L) { size_t len; const char* data = luaL_checklstring(L, 1, &len); const char* type = luaL_optstring(L, 2, "string"); static const int digest_length = 32; unsigned char buffer[digest_length]; SHA256_CTX hash_ctx; sha256_init(&hash_ctx); if (strcmp(type, "file") == 0) { FILE* file = lua_fopen(L, data, "rb"); if (!file) return luaL_error(L, "can't open %s", data); while (1) { unsigned char chunk[4096]; size_t bytes = fread(chunk, 1, sizeof(chunk), file); sha256_update(&hash_ctx, chunk, bytes); if (bytes < sizeof(chunk)) break; } fclose(file); } else { sha256_update(&hash_ctx, (unsigned char *) data, len); } sha256_final(&hash_ctx, buffer); lua_pushhexstring(L, buffer, digest_length); return 1; } static int lpm_tcflush(lua_State* L) { int stream = luaL_checkinteger(L, 1); #ifndef _WIN32 if (isatty(stream)) tcflush(stream, TCIOFLUSH); #endif return 0; } static int lpm_tcwidth(lua_State* L) { int stream = luaL_checkinteger(L, 1); #ifndef _WIN32 if (isatty(stream)) { struct winsize ws={0}; ioctl(stream, TIOCGWINSZ, &ws); lua_pushinteger(L, ws.ws_col); return 1; } #else CONSOLE_SCREEN_BUFFER_INFO csbi; int columns, rows; if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi)) { lua_pushinteger(L, csbi.srWindow.Right - csbi.srWindow.Left + 1); return 1; } #endif return 0; } static int lpm_symlink(lua_State* L) { #ifndef _WIN32 if (symlink(luaL_checkstring(L, 1), luaL_checkstring(L, 2))) return luaL_error(L, "can't create symlink %s: %s", luaL_checkstring(L, 2), strerror(errno)); return 0; #else return luaL_error(L, "can't create symbolic link %s: your operating system sucks", luaL_checkstring(L, 2)); #endif } static int lpm_chmod(lua_State* L) { #ifdef _WIN32 if (_wchmod(lua_toutf16(L, luaL_checkstring(L, 1)), luaL_checkinteger(L, 2))) #else if (chmod(luaL_checkstring(L, 1), luaL_checkinteger(L, 2))) #endif return luaL_error(L, "can't chmod %s: %s", luaL_checkstring(L, 1), strerror(errno)); return 0; } static int lpm_ls(lua_State *L) { const char *path = luaL_checkstring(L, 1); int i = 1; #ifdef _WIN32 lua_settop(L, 1); lua_pushstring(L, path[0] == 0 || strpbrk(&path[strlen(path) - 1], "\\/") != NULL ? "*" : "\\*"); lua_concat(L, 2); path = lua_tostring(L, -1); WIN32_FIND_DATAW fd; HANDLE find_handle = FindFirstFileExW(lua_toutf16(L, path), FindExInfoBasic, &fd, FindExSearchNameMatch, NULL, 0); if (find_handle == INVALID_HANDLE_VALUE) return luaL_win32_error(L, GetLastError(), "can't ls %s", path); lua_newtable(L); do { const char* filename = lua_toutf8(L, fd.cFileName); if (strcmp(filename, ".") != 0 && strcmp(filename, "..") != 0) { lua_rawseti(L, -2, i++); } else lua_pop(L, 1); } while (FindNextFileW(find_handle, &fd)); int err = GetLastError(); FindClose(find_handle); if (err != ERROR_NO_MORE_FILES) return luaL_win32_error(L, err, "can't ls %s", path); #else DIR *dir = opendir(path); if (!dir) return luaL_error(L, "can't ls %s: %s", path, strerror(errno)); lua_newtable(L); struct dirent *entry; while ( (entry = readdir(dir)) ) { if (strcmp(entry->d_name, "." ) == 0) { continue; } if (strcmp(entry->d_name, "..") == 0) { continue; } lua_pushstring(L, entry->d_name); lua_rawseti(L, -2, i++); } closedir(dir); #endif return 1; } static int lpm_rmdir(lua_State *L) { const char *path = luaL_checkstring(L, 1); #ifdef _WIN32 if (!RemoveDirectoryW(lua_toutf16(L, path))) return luaL_win32_error(L, GetLastError(), "can't rmdir %s", path); #else if (remove(path)) return luaL_error(L, "can't rmdir %s: %s", path, strerror(errno)); #endif return 0; } static int lpm_mkdir(lua_State *L) { const char *path = luaL_checkstring(L, 1); #ifdef _WIN32 int err = _wmkdir(lua_toutf16(L, path)); #else int err = mkdir(path, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH); #endif if (err < 0) return luaL_error(L, "can't mkdir %s: %s", path, strerror(errno)); return 0; } static int lpm_stat(lua_State *L) { const char *path = luaL_checkstring(L, 1); #ifdef _WIN32 wchar_t full_path[MAX_PATH]; struct _stat s; LPCWSTR wpath = lua_toutf16(L, path); int err = _wstat(wpath, &s); const char *abs_path = !err && _wfullpath(full_path, wpath, MAX_PATH) ? lua_toutf8(L, (LPCWSTR)full_path) : NULL; #else char full_path[MAX_PATH]; struct stat s; int err = lstat(path, &s); const char *abs_path = NULL; if (!err) { if (S_ISLNK(s.st_mode)) { char folder_path[MAX_PATH]; strcpy(folder_path, path); abs_path = realpath(dirname(folder_path), full_path); if (abs_path) { strcat(full_path, "/"); strcpy(folder_path, path); strcat(full_path, basename(folder_path)); } } else abs_path = realpath(path, full_path); } #endif if (err || !abs_path) { lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2; } lua_newtable(L); lua_pushstring(L, abs_path); lua_setfield(L, -2, "abs_path"); lua_pushvalue(L, 1); lua_setfield(L, -2, "path"); #if __linux__ if (S_ISLNK(s.st_mode)) { char buffer[PATH_MAX]; ssize_t len = readlink(path, buffer, sizeof(buffer)); if (len < 0) return 0; lua_pushlstring(L, buffer, len); } else lua_pushnil(L); lua_setfield(L, -2, "symlink"); if (S_ISLNK(s.st_mode)) err = stat(path, &s); if (err) return 1; #endif lua_pushinteger(L, s.st_mtime); lua_setfield(L, -2, "modified"); lua_pushinteger(L, s.st_size); lua_setfield(L, -2, "size"); lua_pushinteger(L, s.st_mode); lua_setfield(L, -2, "mode"); if (S_ISREG(s.st_mode)) { lua_pushstring(L, "file"); } else if (S_ISDIR(s.st_mode)) { lua_pushstring(L, "dir"); } else { lua_pushnil(L); } lua_setfield(L, -2, "type"); return 1; } /** END STOLEN LITE CODE **/ static int print_trace; static int lpm_trace(lua_State* L) { print_trace = lua_toboolean(L, 1) ? 1 : 0; return 0; } #ifndef LPM_NO_GIT static const char* git_error_last_string() { const git_error* last_error = git_error_last(); return last_error->message; } static int git_get_id(git_oid* commit_id, git_repository* repository, const char* name) { int length = strlen(name); int is_hex = 1; for (int i = 0; is_hex && i < length; ++i) is_hex = isxdigit(name[i]); if (!is_hex || length < 3) return git_reference_name_to_id(commit_id, repository, name); if (length < GIT_OID_SHA1_SIZE*2) { if (length % 2 != 0) return -1; git_commit* commit; git_oid oid = {0}; for (int i = 0; i < length/2; ++i) oid.id[i] |= (name[i] - '0') << ((i % 2) * 4); int ret = git_commit_lookup_prefix(&commit, repository, &oid, length/2); if (ret) return ret; git_oid_cpy(commit_id, git_commit_id(commit)); git_commit_free(commit); return 0; } return git_oid_fromstr(commit_id, name); } static git_repository* luaL_checkgitrepo(lua_State* L, int index) { const char* path = luaL_checkstring(L, index); git_repository* repository; if (git_repository_open(&repository, path)) return (void*)(long long)luaL_error(L, "git open error: %s", git_error_last_string()); return repository; } static git_commit* git_retrieve_commit(git_repository* repository, const char* commit_name) { git_oid commit_id; git_commit* commit; if (git_get_id(&commit_id, repository, commit_name) || git_commit_lookup(&commit, repository, &commit_id)) return NULL; return commit; } // We move this out of main, because this is a significantly expensive function, // and we don't need to call it every time we run lpm. static int git_initialized = 0; static int git_cert_type = 0; static char git_cert_path[MAX_PATH]; static void git_init() { if (!git_initialized) { git_libgit2_init(); if (git_cert_type) git_libgit2_opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, git_cert_type == 2 ? git_cert_path : NULL, git_cert_type == 1 ? git_cert_path : NULL); git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_SYSTEM, "."); git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, "."); git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_XDG, "."); git_initialized = 1; } } static int lpm_reset(lua_State* L) { git_init(); git_repository* repository = luaL_checkgitrepo(L, 1); const char* commit_name = luaL_checkstring(L, 2); const char* type = luaL_checkstring(L, 3); git_commit* commit = git_retrieve_commit(repository, commit_name); if (!commit) { git_repository_free(repository); return luaL_error(L, "git retrieve commit error: %s", git_error_last_string()); } git_reset_t reset_type = GIT_RESET_SOFT; if (strcmp(type, "mixed") == 0) reset_type = GIT_RESET_MIXED; else if (strcmp(type, "hard") == 0) reset_type = GIT_RESET_HARD; int result = git_reset(repository, (git_object*)commit, reset_type, NULL); git_commit_free(commit); git_repository_free(repository); if (result) return luaL_error(L, "git reset error: %s", git_error_last_string()); return 0; } static int lpm_init(lua_State* L) { git_init(); const char* path = luaL_checkstring(L, 1); const char* url = luaL_checkstring(L, 2); git_repository* repository; if (git_repository_init(&repository, path, 0)) return luaL_error(L, "git init error: %s", git_error_last_string()); git_remote* remote; if (git_remote_create(&remote, repository, "origin", url)) { git_repository_free(repository); return luaL_error(L, "git remote add error: %s", git_error_last_string()); } git_remote_free(remote); git_repository_free(repository); return 0; } typedef struct { git_repository* repository; lua_State* L; char refspec[512]; int depth; int threaded; int callback_function; git_transfer_progress progress; int progress_update; int complete; int error_code; char data[512]; lpm_thread_t* thread; } fetch_context_t; static int lpm_fetch_callback(lua_State* L, const git_transfer_progress *stats) { lua_pushinteger(L, stats->received_bytes); lua_pushinteger(L, stats->total_objects); lua_pushinteger(L, stats->indexed_objects); lua_pushinteger(L, stats->received_objects); lua_pushinteger(L, stats->local_objects); lua_pushinteger(L, stats->total_deltas); lua_pushinteger(L, stats->indexed_deltas); return lua_pcall(L, 7, 0, 0); } static int lpm_git_transfer_progress_cb(const git_transfer_progress *stats, void *payload) { fetch_context_t* context = (fetch_context_t*)payload; if (!context->threaded) { if (context->callback_function) { lua_rawgeti(context->L, LUA_REGISTRYINDEX, context->callback_function); lpm_fetch_callback(context->L, stats); } } else { context->progress = *stats; context->progress_update = 1; } return 0; } static int lua_is_main_thread(lua_State* L) { #ifndef LPM_NO_THREADS int is_main = lua_pushthread(L); lua_pop(L, 1); return is_main; #else return 1; #endif } static int no_verify_ssl; static int lpm_git_transport_certificate_check_cb(struct git_cert *cert, int valid, const char *host, void *payload) { return 0; // If no_verify_ssl is enabled, basically always return 0 when this is set as callback. } static void* lpm_fetch_thread(void* ctx) { git_remote* remote; fetch_context_t* context = (fetch_context_t*)ctx; int error = git_remote_lookup(&remote, context->repository, "origin"); if (error && !context->error_code) { snprintf(context->data, sizeof(context->data), "git remote fetch error: %s", git_error_last_string()); context->error_code = error; return NULL; } git_fetch_options fetch_opts = GIT_FETCH_OPTIONS_INIT; fetch_opts.download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL; fetch_opts.callbacks.payload = context; #if (LIBGIT2_VER_MAJOR == 1 && LIBGIT2_VER_MINOR >= 7) || LIBGIT2_VER_MAJOR > 1 fetch_opts.depth = context->depth; #endif if (no_verify_ssl) fetch_opts.callbacks.certificate_check = lpm_git_transport_certificate_check_cb; fetch_opts.callbacks.transfer_progress = lpm_git_transfer_progress_cb; char* strings[] = { context->refspec }; git_strarray array = { strings, 1 }; error = git_remote_connect(remote, GIT_DIRECTION_FETCH, &fetch_opts.callbacks, NULL, NULL) || git_remote_download(remote, context->refspec[0] ? &array : NULL, &fetch_opts) || git_remote_update_tips(remote, &fetch_opts.callbacks, fetch_opts.update_fetchhead, fetch_opts.download_tags, NULL); if (!error && !context->error_code) { git_buf branch_name = {0}; if (!git_remote_default_branch(&branch_name, remote)) { strncpy(context->data, branch_name.ptr, sizeof(context->data)); git_buf_dispose(&branch_name); } } git_remote_disconnect(remote); git_remote_free(remote); if (error && !context->error_code) { snprintf(context->data, sizeof(context->data), "git remote fetch error: %s", git_error_last_string()); context->error_code = error; } context->complete = 1; return NULL; } static int lpm_fetchk(lua_State* L, int status, lua_KContext ctx) { lua_rawgeti(L, LUA_REGISTRYINDEX, (int)ctx); fetch_context_t* context = lua_touserdata(L, -1); lua_pop(L, 1); if (context->threaded && !context->error_code && context->callback_function && context->progress_update) { lua_rawgeti(L, LUA_REGISTRYINDEX, context->callback_function); context->error_code = lpm_fetch_callback(L, &context->progress); if (context->error_code) strncpy(context->data, lua_tostring(L, -1), sizeof(context->data)); } if (context->complete || context->error_code) { join_thread(context->thread); git_repository_free(context->repository); lua_pushstring(L, context->data[0] == 0 ? NULL : context->data); if (context->callback_function) { lua_rawgeti(L, LUA_REGISTRYINDEX, context->callback_function); lua_pushboolean(L, 1); lua_pcall(L, 1, 0, 0); luaL_unref(L, LUA_REGISTRYINDEX, context->callback_function); } luaL_unref(L, LUA_REGISTRYINDEX, (int)ctx); if (context->error_code) { return lua_error(L); } return 1; } return lua_yieldk(L, 0, (lua_KContext)ctx, lpm_fetchk); } static int lpm_fetch(lua_State* L) { git_init(); int args = lua_gettop(L); fetch_context_t* context = lua_newuserdata(L, sizeof(fetch_context_t)); memset(context, 0, sizeof(fetch_context_t)); context->repository = luaL_checkgitrepo(L, 1); const char* refspec = args >= 3 ? luaL_optstring(L, 3, NULL) : NULL; context->depth = args >= 4 && lua_toboolean(L, 4) ? GIT_FETCH_DEPTH_FULL : 1; context->L = L; context->threaded = !lua_is_main_thread(L); if (refspec) strncpy(context->refspec, refspec, sizeof(context->refspec)); if (lua_type(L, 2) == LUA_TFUNCTION) { lua_pushvalue(L, 2); context->callback_function = luaL_ref(L, LUA_REGISTRYINDEX); } int ctx = luaL_ref(L, LUA_REGISTRYINDEX); if (lua_is_main_thread(L)) { lpm_fetch_thread(context); return lpm_fetchk(L, 0, ctx); } else { context->thread = create_thread(lpm_fetch_thread, context); return lua_yieldk(L, 0, (lua_KContext)ctx, lpm_fetchk); } } #else static int lpm_init(lua_State* L) { return luaL_error(L, "this binary was compiled without git support"); } static int lpm_fetch(lua_State* L) { return luaL_error(L, "this binary was compiled without git support"); } static int lpm_reset(lua_State* L) { return luaL_error(L, "this binary was compiled without git support"); } #endif static int mkdirp(lua_State* L, char* path, int len) { for (int i = 0; i < len; ++i) { if (path[i] == '/' && i > 0) { path[i] = 0; #ifdef _WIN32 LPCWSTR wpath = lua_toutf16(L, path); if (_wmkdir(wpath) && errno != EEXIST) { lua_pop(L, 1); return -1; } lua_pop(L, 1); #else if (mkdir(path, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) && errno != EEXIST) #endif return -1; path[i] = '/'; } } return 0; } #define FA_RDONLY 0x01 // FILE_ATTRIBUTE_READONLY #define FA_DIREC 0x10 // FILE_ATTRIBUTE_DIRECTORY // Strips .tar.gz to .tar, .tgz to .tar, .txz to .tar, .tar.xz to .tar. // Assumes sizeof(dst) >= sizeof(src) static const char* strip_to_tar(char* dst, const char* src) { int len = strlen(src); if (strstr(src, ".tar") && (strstr(src, ".gz") || strstr(src, ".xz"))) { strncpy(dst, src, imin(len - 3, PATH_MAX)); len -= 3; } else if (strstr(src, ".tgz") || strstr(src, ".txz")) { strncpy(dst, src, imin(len - 3, PATH_MAX)); strcat(dst, "tar"); } else strcpy(dst, src); dst[len] = 0; return dst; } static int lpm_extract(lua_State* L) { const char* src = luaL_checkstring(L, 1); const char* dst = luaL_checkstring(L, 2); if (strlen(src) > PATH_MAX) return luaL_error(L, "source path too large"); char error[128] = {0}; uint8_t inbuf[4096]; uint8_t outbuf[4096]; if (strstr(src, ".zip")) { int zip_error_code; zip_t* archive = zip_open(src, ZIP_RDONLY, &zip_error_code); if (!archive) { zip_error_t zip_error; zip_error_init_with_code(&zip_error, zip_error_code); lua_pushfstring(L, "can't open zip archive %s: %s", src, zip_error_strerror(&zip_error)); zip_error_fini(&zip_error); return lua_error(L); } zip_int64_t entries = zip_get_num_entries(archive, 0); for (zip_int64_t i = 0; i < entries; ++i) { zip_file_t* zip_file = zip_fopen_index(archive, i, 0); const char* zip_name = zip_get_name(archive, i, ZIP_FL_ENC_GUESS); if (!zip_file) { lua_pushfstring(L, "can't read zip archive file %s: %s", zip_name, zip_strerror(archive)); zip_close(archive); return lua_error(L); } char target[MAX_PATH]; int target_length = snprintf(target, sizeof(target), "%s/%s", dst, zip_name); if (mkdirp(L, target, target_length)) { zip_fclose(zip_file); zip_close(archive); return luaL_error(L, "can't extract zip archive file %s, can't create directory %s: %s", src, target, strerror(errno)); } if (target[target_length-1] != '/') { FILE* file = lua_fopen(L, target, "wb"); if (!file) { zip_fclose(zip_file); zip_close(archive); return luaL_error(L, "can't write file %s: %s", target, strerror(errno)); } mode_t m = S_IRUSR | S_IRGRP | S_IROTH; zip_uint8_t os; zip_uint32_t attr; zip_file_get_external_attributes(archive, i, 0, &os, &attr); if (os == ZIP_OPSYS_DOS) { if (0 == (attr & FA_RDONLY)) m |= S_IWUSR | S_IWGRP | S_IWOTH; if (attr & FA_DIREC) m = (S_IFDIR | (m & ~S_IFMT)) | S_IXUSR | S_IXGRP | S_IXOTH; } else { m = (attr >> 16); } if (chmod(target, m)) { zip_fclose(zip_file); zip_close(archive); return luaL_error(L, "can't chmod file %s: %s", target, strerror(errno)); } while (1) { char buffer[8192]; zip_int64_t length = zip_fread(zip_file, buffer, sizeof(buffer)); if (length == -1) { lua_pushfstring(L, "can't read zip archive file %s: %s", zip_name, zip_file_strerror(zip_file)); zip_fclose(zip_file); zip_close(archive); return lua_error(L); } if (length == 0) break; fwrite(buffer, sizeof(char), length, file); } fclose(file); } zip_fclose(zip_file); } zip_close(archive); } else { char actual_src[PATH_MAX]; if (strstr(src, ".gz") || strstr(src, ".tgz")) { gzFile gzfile = gzopen(src, "rb"); if (!gzfile) return luaL_error(L, "can't open tar.gz archive %s: %s", src, strerror(errno)); FILE* file = lua_fopen(L, strip_to_tar(actual_src, src), "wb"); if (!file) { gzclose(gzfile); return luaL_error(L, "can't open %s for writing: %s", actual_src, strerror(errno)); } while (1) { int length = gzread(gzfile, inbuf, sizeof(inbuf)); if (length == 0) break; fwrite(inbuf, sizeof(char), length, file); } char error[128] = {0}; int error_code = 0; if (!gzeof(gzfile)) strncpy(error, gzerror(gzfile, &error_code), sizeof(error) - 1); fclose(file); gzclose(gzfile); if (error_code) return luaL_error(L, "can't unzip gzip archive %s: %s", src, error); } else if (strstr(src, ".xz") || strstr(src, ".txz")) { lzma_stream strm = LZMA_STREAM_INIT; lzma_ret ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED); if (ret != LZMA_OK) return luaL_error(L, "can't unzip xz archive %s: %s", src, error); lzma_action action = LZMA_RUN; FILE* input = lua_fopen(L, src, "rb"); if (!input) return luaL_error(L, "can't open %s for reading: %s", src, strerror(errno)); FILE* output = lua_fopen(L, strip_to_tar(actual_src, src), "wb"); if (!output) { fclose(input); return luaL_error(L, "can't open %s for writing: %s", actual_src, strerror(errno)); } strm.next_in = inbuf; strm.avail_in = 0; strm.next_out = outbuf; strm.avail_out = sizeof(outbuf); while (ret != LZMA_STREAM_END) { if (strm.avail_in == 0 && !feof(input)) { strm.next_in = inbuf; if ((strm.avail_in = fread(inbuf, 1, sizeof(inbuf), input)) < 0) { lua_pushfstring(L, "can't read and unzip xz archive: %s: %s\n", src, strerror(errno)); break; } if (feof(input)) action = LZMA_FINISH; } ret = lzma_code(&strm, action); if (strm.avail_out == 0 || ret == LZMA_STREAM_END) { size_t write_size = sizeof(outbuf) - strm.avail_out; if (fwrite(outbuf, 1, write_size, output) != write_size) { lua_pushfstring(L, "can't write unzip xz archive: %s: %s\n", src, strerror(errno)); break; } strm.avail_out = sizeof(outbuf); strm.next_out = outbuf; } if (ret != LZMA_OK && ret != LZMA_STREAM_END) { lua_pushfstring(L, "can't unzip xz archive %s, error: %d\n", src, ret); break; } } fclose(input); fclose(output); if (ret != LZMA_OK && ret != LZMA_STREAM_END) lua_error(L); } else strcpy(actual_src, src); if (strstr(src, ".tar") || strstr(src, ".tgz")) { // It's incredily slow to seek/read directly from a gzfile; so just unzip to an intermediate file first. mtar_t tar = {0}; int err; if ((err = mtar_open(&tar, actual_src, "r"))) return luaL_error(L, "can't open tar archive %s: %s", src, mtar_strerror(err)); mtar_header_t h = {0}, before_h = {0}, always_h = {0}; int has_ext_before = 0, has_ext_always = 0; char target[MAX_PATH]; while ((mtar_read_header(&tar, &h)) != MTAR_ENULLRECORD ) { switch (h.type) { case MTAR_TSYM: case MTAR_TDIR: case MTAR_TCON: case MTAR_TREG: { if (has_ext_before) { mtar_update_header(&h, &before_h); has_ext_before = 0; mtar_clear_header(&before_h); } else if (has_ext_always) { mtar_update_header(&h, &always_h); } int target_length = snprintf(target, sizeof(target), "%s/%s", dst, h.name); if (mkdirp(L, target, target_length)) { mtar_close(&tar); return luaL_error(L, "can't extract tar archive file %s, can't create directory %s: %s", src, target, strerror(errno)); } if (h.type == MTAR_TSYM) { lua_pushcfunction(L, lpm_symlink); lua_pushstring(L, h.linkname); lua_pushlstring(L, target, target_length); lua_pcall(L, 2, 0, 0); } else if (h.type == MTAR_TDIR) { lua_pushcfunction(L, lpm_mkdir); lua_pushlstring(L, target, target_length); lua_pcall(L, 1, 0, 0); } else { FILE* file = lua_fopen(L, target, "wb"); if (!file) { mtar_close(&tar); return luaL_error(L, "can't extract tar archive file %s, can't create file %s: %s", src, target, strerror(errno)); } char buffer[8192]; int remaining = h.size; while (remaining > 0) { int read_size = remaining < sizeof(buffer) ? remaining : sizeof(buffer); int err = mtar_read_data(&tar, buffer, read_size); if (err != MTAR_ESUCCESS) { fclose(file); mtar_close(&tar); return luaL_error(L, "can't read file %s: %s", target, mtar_strerror(err)); } fwrite(buffer, sizeof(char), read_size, file); remaining -= read_size; } fclose(file); } if (h.type != MTAR_TSYM && chmod(target, h.mode)) { mtar_close(&tar); return luaL_error(L, "can't extract tar archive file %s, can't chmod file %s: %s", src, target, strerror(errno)); } } break; case MTAR_TEHR: case MTAR_TEHRA: { mtar_header_t *h_to_change; if (h.type == MTAR_TEHR) { h_to_change = &before_h; has_ext_before = 1; } else { h_to_change = &always_h; has_ext_always = 1; } char buffer[4096] = {0}; char current_read[8192] = {0}; // If a line is more than 8192 char long, will not work! char last_read[4096] = {0}; int remaining = h.size; while (remaining > 0) { int read_size = remaining < sizeof(buffer) ? remaining : sizeof(buffer); remaining -= read_size; if (mtar_read_data(&tar, buffer, read_size) != MTAR_ESUCCESS) { mtar_close(&tar); return luaL_error(L, "Error while reading extended: %s", strerror(errno)); } strcpy(current_read, last_read); current_read[strlen(last_read)] = '\0'; strcat(current_read, buffer); current_read[strlen(last_read) + read_size] = '\0'; char *n_line_ptr = NULL; char **l_line_ptr = NULL; char *line = strtok_r(current_read, "\n", &n_line_ptr); while (line != NULL) { char *in_line_ptr = NULL; strtok_r(line, " ", &in_line_ptr); char *header_key = strtok_r(NULL, "=", &in_line_ptr); char *header_val = strtok_r(NULL, "=", &in_line_ptr); if (!strcmp(header_key, "path")) strcpy(h_to_change->name, header_val); if (!strcmp(header_key, "linkpath")) strcpy(h_to_change->linkname, header_val); // possibility to add more later l_line_ptr = &n_line_ptr; line = strtok_r(NULL, "\n", &n_line_ptr); } if (current_read[strlen(last_read) + read_size - 1] != '\n') strcpy(last_read, strtok_r(current_read, "\n", l_line_ptr)); else memset(last_read, 0, strlen(last_read)); } } break; case MTAR_TGFP: { has_ext_before = 1; int read_size = imin(h.size, (int)sizeof(before_h.name)); if (mtar_read_data(&tar, before_h.name, read_size) != MTAR_ESUCCESS) { mtar_close(&tar); return luaL_error(L, "Error while reading GNU extended: %s", strerror(errno)); } } break; case MTAR_TGLP: { has_ext_before = 1; int read_size = imin(h.size, (int)sizeof(before_h.linkname)); fprintf(stderr, "READ SIZE: %d\n", read_size); if (mtar_read_data(&tar, before_h.linkname, read_size) != MTAR_ESUCCESS) { mtar_close(&tar); return luaL_error(L, "Error while reading GNU extended: %s", strerror(errno)); } } break; } int err; if ((err = mtar_next(&tar))) { mtar_close(&tar); return luaL_error(L, "Error while reading tar archive: %s", mtar_strerror(err)); } } mtar_close(&tar); if (strcmp(actual_src, src) != 0) unlink(actual_src); } } return 0; } #ifndef LPM_NO_NETWORK static int has_setup_ssl; static mbedtls_x509_crt x509_certificate; static mbedtls_entropy_context entropy_context; static mbedtls_ctr_drbg_context drbg_context; static mbedtls_ssl_config ssl_config; static mbedtls_ssl_context ssl_context; static void lpm_tls_debug(void *ctx, int level, const char *file, int line, const char *str) { fprintf(stderr, "%s:%04d: |%d| %s", file, line, level, str); fflush(stderr); } static void lpm_libgit2_debug(git_trace_level_t level, const char *msg) { fprintf(stderr, "[libgit2]: %s\n", msg); fflush(stderr); } static int luaL_mbedtls_error(lua_State* L, int code, const char* str, ...) { char vsnbuffer[1024]; char mbed_buffer[128]; mbedtls_strerror(code, mbed_buffer, sizeof(mbed_buffer)); va_list va; va_start(va, str); vsnprintf(vsnbuffer, sizeof(vsnbuffer), str, va); va_end(va); return luaL_error(L, "%s: %s", vsnbuffer, mbed_buffer); } static int lpm_certs(lua_State* L) { const char* type = luaL_checkstring(L, 1); int status; if (has_setup_ssl) { mbedtls_ssl_config_free(&ssl_config); mbedtls_ctr_drbg_free(&drbg_context); mbedtls_entropy_free(&entropy_context); mbedtls_x509_crt_free(&x509_certificate); } mbedtls_x509_crt_init(&x509_certificate); mbedtls_entropy_init(&entropy_context); mbedtls_ctr_drbg_init(&drbg_context); if ((status = mbedtls_ctr_drbg_seed(&drbg_context, mbedtls_entropy_func, &entropy_context, NULL, 0)) != 0) return luaL_mbedtls_error(L, status, "failed to setup mbedtls_x509"); mbedtls_ssl_config_init(&ssl_config); status = mbedtls_ssl_config_defaults(&ssl_config, MBEDTLS_SSL_IS_CLIENT, MBEDTLS_SSL_TRANSPORT_STREAM, MBEDTLS_SSL_PRESET_DEFAULT); if (status) return luaL_mbedtls_error(L, status, "can't set ssl_config defaults"); mbedtls_ssl_conf_max_version(&ssl_config, MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3); mbedtls_ssl_conf_min_version(&ssl_config, MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3); mbedtls_ssl_conf_authmode(&ssl_config, MBEDTLS_SSL_VERIFY_REQUIRED); mbedtls_ssl_conf_rng(&ssl_config, mbedtls_ctr_drbg_random, &drbg_context); mbedtls_ssl_conf_read_timeout(&ssl_config, 5000); #if defined(MBEDTLS_DEBUG_C) if (print_trace) { mbedtls_debug_set_threshold(5); mbedtls_ssl_conf_dbg(&ssl_config, lpm_tls_debug, NULL); git_init(); git_trace_set(GIT_TRACE_TRACE, lpm_libgit2_debug); } #endif has_setup_ssl = 1; if (strcmp(type, "noverify") == 0) { no_verify_ssl = 1; mbedtls_ssl_conf_authmode(&ssl_config, MBEDTLS_SSL_VERIFY_OPTIONAL); if (print_trace) { fprintf(stderr, "[ssl] SSL verify set to optional.\n"); fflush(stderr); } } else { const char* path = luaL_checkstring(L, 2); if (strcmp(type, "dir") == 0) { git_cert_type = 1; if (git_initialized) git_libgit2_opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, NULL, path); strncpy(git_cert_path, path, MAX_PATH); if (print_trace) { fprintf(stderr, "[ssl] SSL directory set to %s.\n", git_cert_path); fflush(stderr); } status = mbedtls_x509_crt_parse_path(&x509_certificate, path); if (status < 0) return luaL_mbedtls_error(L, status, "mbedtls_x509_crt_parse_path failed to parse all CA certificates in %s", path); if (status > 0 && print_trace) { fprintf(stderr, "[ssl] mbedtls_x509_crt_parse_path on %s failed to parse %d certificates, but still succeeded.\n", path, status); fflush(stderr); } mbedtls_ssl_conf_ca_chain(&ssl_config, &x509_certificate, NULL); } else { if (strcmp(type, "system") == 0) { #if _WIN32 FILE* file = lua_fopen(L, path, "wb"); if (!file) return luaL_error(L, "can't open cert store %s for writing: %s", path, strerror(errno)); HCERTSTORE hSystemStore = CertOpenSystemStore(0, TEXT("ROOT")); if (!hSystemStore) { fclose(file); return luaL_error(L, "error getting system certificate store"); } PCCERT_CONTEXT pCertContext = NULL; while (1) { pCertContext = CertEnumCertificatesInStore(hSystemStore, pCertContext); if (!pCertContext) break; BYTE keyUsage[2]; if (pCertContext->dwCertEncodingType & X509_ASN_ENCODING && (CertGetIntendedKeyUsage(pCertContext->dwCertEncodingType, pCertContext->pCertInfo, keyUsage, sizeof(keyUsage)) && (keyUsage[0] & CERT_KEY_CERT_SIGN_KEY_USAGE))) { DWORD size = 0; CryptBinaryToString(pCertContext->pbCertEncoded, pCertContext->cbCertEncoded, CRYPT_STRING_BASE64HEADER, NULL, &size); char* buffer = malloc(size); CryptBinaryToString(pCertContext->pbCertEncoded, pCertContext->cbCertEncoded, CRYPT_STRING_BASE64HEADER, buffer, &size); fwrite(buffer, sizeof(char), size, file); free(buffer); } } fclose(file); CertCloseStore(hSystemStore, 0); if (print_trace) { fprintf(stderr, "[ssl] SSL file pulled from system store and written to %s.\n", path); fflush(stderr); } #elif __APPLE__ // https://developer.apple.com/forums/thread/691009; see also curl's mac version return luaL_error(L, "can't use system on mac yet"); #else return luaL_error(L, "can't use system certificates except on windows or mac"); #endif } git_cert_type = 2; if (git_initialized) git_libgit2_opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, path, NULL); strncpy(git_cert_path, path, MAX_PATH); if (print_trace) { fprintf(stderr, "[ssl] SSL file set to %s.\n", git_cert_path); fflush(stderr); } status = mbedtls_x509_crt_parse_file(&x509_certificate, path); if (status < 0) return luaL_mbedtls_error(L, status, "mbedtls_x509_crt_parse_file failed to parse CA certificate %s", path); if (status > 0 && print_trace) { fprintf(stderr, "[ssl] mbedtls_x509_crt_parse_file on %s failed to parse %d certificates, but still still succeeded.\n", path, status); fflush(stderr); } mbedtls_ssl_conf_ca_chain(&ssl_config, &x509_certificate, NULL); if (print_trace) { fprintf(stderr, "[ssl] SSL file set to %s.\n", path); fflush(stderr); } } } return 0; } static int strncicmp(const char* a, const char* b, int n) { for (int i = 0; i < n; ++i) { if (a[i] == 0 && b[i] != 0) return -1; if (a[i] != 0 && b[i] == 0) return 1; int lowera = tolower(a[i]), lowerb = tolower(b[i]); if (lowera == lowerb) continue; if (lowera < lowerb) return -1; return 1; } return 0; } static const char* strnstr_local(const char* haystack, const char* needle, int n) { int len = strlen(needle); for (int i = 0; i <= n - len; ++i) { if (strncmp(&haystack[i], needle, len) == 0) return &haystack[i]; } return NULL; } static const char* get_header(const char* buffer, const char* header, int* len) { const char* line_end = strstr(buffer, "\r\n"); const char* header_end = strstr(buffer, "\r\n\r\n"); int header_len = strlen(header); while (line_end && line_end < header_end) { if (strncicmp(line_end + 2, header, header_len) == 0) { const char* offset = line_end + header_len + 3; while (*offset == ' ') { ++offset; } const char* end = strstr(offset, "\r\n"); if (len) *len = end - offset; return offset; } line_end = strstr(line_end + 2, "\r\n"); } return NULL; } typedef enum { STATE_CONNECT, STATE_HANDSHAKE, STATE_SEND, STATE_RECV_HEADER, STATE_RECV_BODY } get_state_e; typedef struct { get_state_e state; int s; int is_ssl; mbedtls_ssl_context ssl; mbedtls_net_context net; int lua_buffer; FILE* file; char address[1024]; int error_code; char error[256]; char hostname[256]; char rest[2048]; int callback_function; char buffer[HTTPS_RESPONSE_HEADER_BUFFER_LENGTH]; int buffer_length; int content_length; int chunk_length; int chunked; int chunk_written; int total_downloaded; } get_context_t; static int lpm_socket_write(get_context_t* context, int len) { return context->is_ssl ? mbedtls_ssl_write(&context->ssl, (unsigned char *) context->buffer, len) : write(context->s, context->buffer, len); } static int lpm_socket_read(get_context_t* context, int len) { if (len == -1) len = sizeof(context->buffer) - context->buffer_length; if (len == 0) return len; len = context->is_ssl ? mbedtls_ssl_read(&context->ssl, (unsigned char *) &context->buffer[context->buffer_length], len) : read(context->s, &context->buffer[context->buffer_length], len); if (len > 0) context->buffer_length += len; return len; } static int lpm_get_error(get_context_t* context, int error_code, const char* str, ...) { if (error_code) { context->error_code = error_code; char mbed_buffer[256]; mbedtls_strerror(error_code, mbed_buffer, sizeof(mbed_buffer)); int error_len = context->is_ssl ? strlen(mbed_buffer) : strlen(strerror(error_code)); va_list va; int offset = 0; va_start(va, str); offset = vsnprintf(context->buffer, sizeof(context->buffer), str, va); va_end(va); if (offset < sizeof(context->buffer) - 2) { strcat(context->buffer, ": "); if (offset < sizeof(context->buffer) - error_len - 2) strcat(context->buffer, context->is_ssl ? mbed_buffer : strerror(error_code)); } } return error_code; } static int lpm_set_error(get_context_t* context, const char* str, ...) { va_list va; int offset = 0; va_start(va, str); offset = vsnprintf(context->error, sizeof(context->error), str, va); va_end(va); context->error_code = -1; return offset; } static int lpm_getk(lua_State* L, int status, lua_KContext ctx) { lua_rawgeti(L, LUA_REGISTRYINDEX, ctx); get_context_t* context = (get_context_t*)lua_touserdata(L, -1); lua_pop(L,1); switch (context->state) { case STATE_HANDSHAKE: { int status = mbedtls_ssl_handshake(&context->ssl); if (status == MBEDTLS_ERR_SSL_WANT_READ || status == MBEDTLS_ERR_SSL_WANT_WRITE) return lua_yieldk(L, 0, ctx, lpm_getk); if ( lpm_get_error(context, status, "can't handshake") || lpm_get_error(context, mbedtls_ssl_get_verify_result(&context->ssl), "can't verify result") ) goto cleanup; context->state = STATE_SEND; } case STATE_SEND: { context->buffer_length = snprintf(context->buffer, sizeof(context->buffer), "GET %s HTTP/1.1\r\nHost: %s\r\nConnection: close\r\n\r\n", context->rest, context->hostname); int length = lpm_socket_write(context, context->buffer_length); if (length < context->buffer_length && lpm_get_error(context, length, "can't write to socket")) goto cleanup; context->buffer_length = 0; context->buffer[0] = 0; context->state = STATE_RECV_HEADER; } case STATE_RECV_HEADER: { const char* header_end; while (1) { header_end = strstr(context->buffer, "\r\n\r\n"); if (!header_end && context->buffer_length >= sizeof(context->buffer) - 1 && lpm_set_error(context, "response header buffer length exceeded")) goto cleanup; if (!header_end) { int length = lpm_socket_read(context, -1); if (length < 0 && lpm_get_error(context, length, "can't read from socket")) goto cleanup; if (length == 0) return lua_yieldk(L, 0, ctx, lpm_getk); } else { header_end += 4; const char* protocol_end = strnstr_local(context->buffer, " ", context->buffer_length); int code = atoi(protocol_end + 1); if (code != 200) { if (code >= 301 && code <= 303) { const char* location = get_header(context->buffer, "location", &context->buffer_length); if (location) { lua_pushnil(L); lua_newtable(L); lua_pushlstring(L, location, context->buffer_length); lua_setfield(L, -2, "location"); } else lpm_set_error(context, "received invalid %d-response", code); } else lpm_set_error(context, "received non 200-response of %d", code); goto report; } const char* transfer_encoding = get_header(context->buffer, "transfer-encoding", NULL); context->chunked = transfer_encoding && strncmp(transfer_encoding, "chunked", 7) == 0 ? 1 : 0; const char* content_length_value = get_header(context->buffer, "content-length", NULL); context->content_length = content_length_value ? atoi(content_length_value) : -1; context->buffer_length -= (header_end - context->buffer); if (context->buffer_length > 0) memmove(context->buffer, header_end, context->buffer_length); context->chunk_length = !context->chunked && context->content_length == -1 ? INT_MAX : context->content_length; context->state = STATE_RECV_BODY; break; } } } case STATE_RECV_BODY: { while (1) { // If we have an unknown amount of chunk bytes to be fetched, determine the size of the next chunk. while (context->chunk_length == -1) { char* newline = (char*)strnstr_local(context->buffer, "\r\n", context->buffer_length); if (newline) { *newline = '\0'; if ((sscanf(context->buffer, "%x", &context->chunk_length) != 1 && lpm_set_error(context, "error retrieving chunk length"))) goto cleanup; else if (context->chunk_length == 0) goto finish; context->buffer_length -= (newline + 2 - context->buffer); if (context->buffer_length > 0) memmove(context->buffer, newline + 2, context->buffer_length); } else if (context->buffer_length >= sizeof(context->buffer) && lpm_set_error(context, "can't find chunk length")) { goto cleanup; } else { int length = lpm_socket_read(context, -1); if ((length <= 0 || (context->is_ssl && length == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)) && lpm_get_error(context, length, "error retrieving full repsonse")) goto cleanup; if (length == 0) return lua_yieldk(L, 0, ctx, lpm_getk); } } if (context->buffer_length > 0) { int to_write = imin(context->chunk_length - context->chunk_written, context->buffer_length); if (to_write > 0) { context->total_downloaded += to_write; context->chunk_written += to_write; if (context->callback_function) { lua_rawgeti(L, LUA_REGISTRYINDEX, context->callback_function); lua_pushinteger(L, context->total_downloaded); if (context->content_length == -1) lua_pushnil(L); else lua_pushinteger(L, context->content_length); lua_call(L, 2, 0); } if (context->file) fwrite(context->buffer, sizeof(char), to_write, context->file); else { lua_rawgeti(L, LUA_REGISTRYINDEX, context->lua_buffer); lua_pushlstring(L, context->buffer, to_write); lua_rawseti(L, -2, lua_rawlen(L, -2) + 1); lua_pop(L, 1); } context->buffer_length -= to_write; if (context->buffer_length > 0) memmove(context->buffer, &context->buffer[to_write], context->buffer_length); } if (context->chunk_written == context->chunk_length) { if (!context->chunked) goto finish; if (context->buffer_length >= 2) { if (!strnstr_local(context->buffer, "\r\n", 2) && lpm_set_error(context, "invalid end to chunk")) goto cleanup; memmove(context->buffer, &context->buffer[2], context->buffer_length - 2); context->buffer_length -= 2; context->chunk_length = -1; } } } if (context->chunk_length > 0) { int length = lpm_socket_read(context, imin(sizeof(context->buffer) - context->buffer_length, context->chunk_length - context->chunk_written + (context->chunked ? 2 : 0))); if ((!context->is_ssl && length == 0) || (context->is_ssl && context->content_length == -1 && length == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)) goto finish; if (length < 0 && lpm_get_error(context, length, "error retrieving full chunk")) goto cleanup; if (length == 0) return lua_yieldk(L, 0, ctx, lpm_getk); } } } default: break; } finish: if (context->file) { lua_pushnil(L); lua_newtable(L); } else { lua_rawgeti(L, LUA_REGISTRYINDEX, context->lua_buffer); size_t len = lua_rawlen(L, -1); luaL_Buffer b; int table = lua_gettop(L); luaL_buffinit(L, &b); for (int i = 1; i <= len; ++i) { lua_rawgeti(L, table, i); size_t str_len; const char* str = lua_tolstring(L, -1, &str_len); lua_pop(L, 1); luaL_addlstring(&b, str, str_len); } lua_pop(L, 1); luaL_pushresult(&b); lua_newtable(L); } if (context->content_length != -1 && context->total_downloaded != context->content_length && lpm_set_error(context, "error retrieving full response")) goto cleanup; report: if (context->callback_function && !context->error_code) { lua_rawgeti(L, LUA_REGISTRYINDEX, context->callback_function); lua_pushboolean(L, 1); lua_call(L, 1, 0); } cleanup: if (context->is_ssl) { mbedtls_ssl_free(&context->ssl); mbedtls_net_free(&context->net); } else { close(context->s); } if (context->callback_function) luaL_unref(L, LUA_REGISTRYINDEX, context->callback_function); if (context->file) fclose(context->file); else luaL_unref(L, LUA_REGISTRYINDEX, context->lua_buffer); if (context->error_code) return luaL_error(L, "%s", context->error); return 2; } static int lpm_get(lua_State* L) { get_context_t* context = lua_newuserdata(L, sizeof(get_context_t)); memset(context, 0, sizeof(get_context_t)); int threaded = !lua_is_main_thread(L); const char* protocol = luaL_checkstring(L, 1); strncpy(context->hostname, luaL_checkstring(L, 2), sizeof(context->hostname)); strncpy(context->rest, luaL_checkstring(L, 4), sizeof(context->rest)); const char* path = luaL_optstring(L, 5, NULL); if (path) { if ((context->file = lua_fopen(L, path, "wb")) == NULL) return luaL_error(L, "can't open file %s: %s", path, strerror(errno)); } else { lua_newtable(L); context->lua_buffer = luaL_ref(L, LUA_REGISTRYINDEX); } if (lua_type(L, 6) == LUA_TFUNCTION) { lua_pushvalue(L, 6); context->callback_function = luaL_ref(L, LUA_REGISTRYINDEX); } context->state = STATE_CONNECT; if (strcmp(protocol, "https") == 0) { const char* port = lua_tostring(L, 3); // https://gist.github.com/Barakat/675c041fd94435b270a25b5881987a30 mbedtls_ssl_init(&context->ssl); mbedtls_net_init(&context->net); if (threaded) mbedtls_net_set_nonblock(&context->net); else mbedtls_net_set_block(&context->net); mbedtls_ssl_set_bio(&context->ssl, &context->net, mbedtls_net_send, mbedtls_net_recv, NULL); if ( lpm_get_error(context, mbedtls_ssl_setup(&context->ssl, &ssl_config), "can't set up ssl") || lpm_get_error(context, mbedtls_net_connect(&context->net, context->hostname, port, MBEDTLS_NET_PROTO_TCP), "can't set hostname") || lpm_get_error(context, mbedtls_ssl_set_hostname(&context->ssl, context->hostname), "can't set hostname") ) { mbedtls_ssl_free(&context->ssl); mbedtls_net_free(&context->net); return luaL_error(L, "%s", context->error); } context->is_ssl = 1; context->state = STATE_HANDSHAKE; } else { int port = luaL_checkinteger(L, 3); struct hostent *host = gethostbyname(context->hostname); struct sockaddr_in dest_addr = {0}; if (!host) return luaL_error(L, "can't resolve hostname %s", context->hostname); context->s = socket(AF_INET, SOCK_STREAM, 0); if (threaded) { #if _WIN32 unsigned long ul = 1; ioctlsocket(context->s, FIONBIO, (unsigned long *) &ul); #else fcntl(context->s, F_SETFL, fcntl(context->s, F_GETFL, 0) | O_NONBLOCK); #endif } dest_addr.sin_family = AF_INET; dest_addr.sin_port = htons(port); dest_addr.sin_addr.s_addr = *(long*)(host->h_addr); const char* ip = inet_ntoa(dest_addr.sin_addr); if (connect(context->s, (struct sockaddr *) &dest_addr, sizeof(struct sockaddr)) == -1 ) { close(context->s); return luaL_error(L, "can't connect to host %s [%s] on port %d", context->hostname, ip, port); } context->state = STATE_SEND; } if (!threaded) return lpm_getk(L, 0, luaL_ref(L, LUA_REGISTRYINDEX)); return lua_yieldk(L, 0, luaL_ref(L, LUA_REGISTRYINDEX), lpm_getk); } #else static int lpm_get(lua_State* L) { return luaL_error(L, "this binary was compiled without network suport"); } static int lpm_certs(lua_State* L) { return luaL_error(L, "this binary was compiled without network suport"); } #endif static int lpm_chdir(lua_State* L) { #ifdef _WIN32 if (_wchdir(lua_toutf16(L, luaL_checkstring(L, 1)))) #else if (chdir(luaL_checkstring(L, 1))) #endif return luaL_error(L, "error chdiring: %s", strerror(errno)); return 0; } static int lpm_pwd(lua_State* L) { #ifdef _WIN32 wchar_t buffer[MAX_PATH]; if (!_wgetcwd(buffer, sizeof(buffer))) return luaL_error(L, "error getcwd: %s", strerror(errno)); lua_toutf8(L, buffer); #else char buffer[MAX_PATH]; if (!getcwd(buffer, sizeof(buffer))) return luaL_error(L, "error getcwd: %s", strerror(errno)); lua_pushstring(L, buffer); #endif return 1; } static int lpm_flock(lua_State* L) { const char* path = luaL_checkstring(L, 1); luaL_checktype(L, 2, LUA_TFUNCTION); int error_handler = lua_type(L, 3) == LUA_TFUNCTION ? 3 : 0; int warning_handler = lua_type(L, 4) == LUA_TFUNCTION ? 4 : 0; #ifdef _WIN32 HANDLE file = CreateFileW(lua_toutf16(L, path), FILE_SHARE_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0); if (!file || file == INVALID_HANDLE_VALUE) return luaL_win32_error(L, GetLastError(), "can't open for flock %s", path); OVERLAPPED overlapped = {0}; if (!LockFileEx(file, LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0, 0, 1, &overlapped)) { if (GetLastError() == ERROR_IO_PENDING && warning_handler) { lua_pushvalue(L, warning_handler); lua_pcall(L, 0, 0, 0); } if (!LockFileEx(file, LOCKFILE_EXCLUSIVE_LOCK, 0, 0, 1, &overlapped)) { CloseHandle(file); return luaL_win32_error(L, GetLastError(), "can't flock %s", path); } } #else int fd = open(path, 0); if (fd == -1) return luaL_error(L, "can't flock %s: %s", path, strerror(errno)); if (flock(fd, LOCK_EX | LOCK_NB) == -1) { if (errno == EWOULDBLOCK && warning_handler) { lua_pushvalue(L, warning_handler); lua_pcall(L, 0, 0, 0); } if (flock(fd, LOCK_EX) == -1) { close(fd); return luaL_error(L, "can't acquire exclusive lock on %s: %s", strerror(errno)); } } #endif lua_pushvalue(L, 2); lua_pushvalue(L, 1); int err = lua_pcall(L, 1, 0, error_handler); #ifdef _WIN32 UnlockFile(file, 0, 0, 1, 0); CloseHandle(file); #else flock(fd, LOCK_UN); close(fd); #endif if (err) { lua_pushboolean(L, 1); return 1; } return 0; } static double get_time() { #if _WIN32 // Fuck I hate windows jesus chrsit. LARGE_INTEGER LoggedTime, Frequency; QueryPerformanceFrequency(&Frequency); QueryPerformanceCounter(&LoggedTime); return LoggedTime.QuadPart / (double)Frequency.QuadPart; #else struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts); return ts.tv_sec + ts.tv_nsec / 1000000000.0; #endif } static int lpm_time(lua_State* L) { lua_pushnumber(L, get_time()); return 1; } static const luaL_Reg system_lib[] = { { "ls", lpm_ls }, // Returns an array of files. { "stat", lpm_stat }, // Returns info about a single file. { "mkdir", lpm_mkdir }, // Makes a directory. { "rmdir", lpm_rmdir }, // Removes a directory. { "hash", lpm_hash }, // Returns a hex sha256 hash. { "tcflush", lpm_tcflush }, // Flushes an terminal stream. { "tcwidth", lpm_tcwidth }, // Gets the terminal width in columns. { "symlink", lpm_symlink }, // Creates a symlink. { "chmod", lpm_chmod }, // Chmod's a file. { "init", lpm_init }, // Initializes a git repository with the specified remote. { "fetch", lpm_fetch }, // Updates a git repository with the specified remote. { "reset", lpm_reset }, // Updates a git repository to the specified commit/hash/branch. { "get", lpm_get }, // HTTP(s) GET request. { "extract", lpm_extract }, // Extracts .tar.gz, and .zip files. { "trace", lpm_trace }, // Sets trace bit. { "certs", lpm_certs }, // Sets the SSL certificate chain folder/file. { "chdir", lpm_chdir }, // Changes directory. Only use for --post actions. { "pwd", lpm_pwd }, // Gets existing directory. Only use for --post actions. { "flock", lpm_flock }, // Locks a file. { "time", lpm_time }, // Get high-precision system time. { NULL, NULL } }; #ifndef LPM_ARCH_PROCESSOR #if defined(__x86_64__) || defined(_M_AMD64) || defined(__MINGW64__) #define LPM_ARCH_PROCESSOR "x86_64" #elif defined(__i386__) || defined(_M_IX86) || defined(__MINGW32__) #define LPM_ARCH_PROCESSOR "x86" #elif defined(__aarch64__) || defined(_M_ARM64) || defined (_M_ARM64EC) #define LPM_ARCH_PROCESSOR "aarch64" #elif defined(__arm__) || defined(_M_ARM) #define LPM_ARCH_PROCESSOR "arm" #elif defined(__riscv_xlen) && __riscv_xlen == 32 #define LPM_ARCH_PROCESSOR "riscv32" #elif defined(__riscv_xlen) && __riscv_xlen == 64 #define LPM_ARCH_PROCESSOR "riscv64" #else #error "Please define -DLPM_ARCH_PROCESSOR." #endif #endif #ifndef LPM_ARCH_PLATFORM #if _WIN32 #define LPM_ARCH_PLATFORM "windows" #elif __ANDROID__ #define LPM_ARCH_PLATFORM "android" #elif __linux__ #define LPM_ARCH_PLATFORM "linux" #elif __APPLE__ #define LPM_ARCH_PLATFORM "darwin" #else #error "Please define -DLPM_ARCH_PLATFORM." #endif #endif #ifndef LPM_ARCH_TUPLE #define LPM_ARCH_TUPLE LPM_ARCH_PROCESSOR "-" LPM_ARCH_PLATFORM #endif #ifndef LPM_VERSION #define LPM_VERSION "unknown" #endif #ifndef LPM_DEFAULT_REPOSITORY #define LPM_DEFAULT_REPOSITORY "https://github.com/lite-xl/lite-xl-plugin-manager.git:latest" #endif // If this is defined as empty string, we disable self-upgrading, as well as switching the executable symlink. #ifndef LPM_DEFAULT_RELEASE #if _WIN32 #define LPM_DEFAULT_RELEASE "https://github.com/lite-xl/lite-xl-plugin-manager/releases/download/%r/lpm." LPM_ARCH_TUPLE ".exe" #else #define LPM_DEFAULT_RELEASE "https://github.com/lite-xl/lite-xl-plugin-manager/releases/download/%r/lpm." LPM_ARCH_TUPLE #endif #endif #ifdef LPM_STATIC extern const char lpm_luac[]; extern unsigned int lpm_luac_len; #endif int main(int argc, char* argv[]) { lua_State* L = luaL_newstate(); luaL_openlibs(L); luaL_newlib(L, system_lib); lua_setglobal(L, "system"); lua_newtable(L); for (int i = 0; i < argc; ++i) { lua_pushstring(L, argv[i]); lua_rawseti(L, -2, i+1); } lua_setglobal(L, "ARGV"); lua_pushliteral(L, LPM_VERSION); lua_setglobal(L, "VERSION"); lua_pushliteral(L, LPM_ARCH_PLATFORM); lua_setglobal(L, "PLATFORM"); #ifdef LPM_NO_NETWORK lua_pushboolean(L, 1); #else lua_pushboolean(L, 0); #endif lua_setglobal(L, "NO_NETWORK"); #ifdef LPM_NO_GIT lua_pushboolean(L, 1); #else lua_pushboolean(L, 0); #endif lua_setglobal(L, "NO_GIT"); #ifdef LPM_NO_LXL lua_pushboolean(L, 1); #else lua_pushboolean(L, 0); #endif lua_setglobal(L, "NO_LXL"); #ifdef LPM_NO_REMOTE_EXECUTABLE lua_pushboolean(L, 1); #else lua_pushboolean(L, 0); #endif lua_setglobal(L, "NO_REMOTE_EXEUCTABLE"); #if _WIN32 DWORD handles[] = { STD_OUTPUT_HANDLE, STD_ERROR_HANDLE }; int setVirtualProcessing = 0; for (int i = 0; i < 2; ++i) { DWORD mode = 0; if (GetConsoleMode(GetStdHandle(handles[i]), &mode)) { if (SetConsoleMode(GetStdHandle(handles[i]), mode | ENABLE_PROCESSED_OUTPUT | ENABLE_VIRTUAL_TERMINAL_PROCESSING)) setVirtualProcessing = 1; } } // This will fail with mintty, see here: https://github.com/mintty/mintty/issues/482 lua_pushboolean(L, setVirtualProcessing || isatty(fileno(stdout))); #else lua_pushboolean(L, isatty(fileno(stdout))); #endif lua_setglobal(L, "TTY"); #if _WIN32 lua_pushliteral(L, "\\"); #else lua_pushliteral(L, "/"); #endif lua_setglobal(L, "PATHSEP"); #if _WIN32 wchar_t tmpdir[MAX_PATH]; DWORD length = GetTempPathW(MAX_PATH, tmpdir); tmpdir[length - 1] = 0; lua_toutf8(L, tmpdir); #else lua_pushstring(L, getenv("TMPDIR") ? getenv("TMPDIR") : P_tmpdir); #endif lua_setglobal(L, "SYSTMPDIR"); #if _WIN32 wchar_t selfpath[MAX_PATH] = {0}; if (GetModuleFileNameW(0, selfpath, MAX_PATH - 1)) lua_toutf8(L, selfpath); else lua_pushnil(L); #else char selfpath[MAX_PATH] = {0}; int length = readlink("/proc/self/exe", selfpath, MAX_PATH); if (length > 0) lua_pushlstring(L, selfpath, length); else lua_pushnil(L); #endif lua_setglobal(L, "EXEFILE"); lua_pushliteral(L, LPM_ARCH_TUPLE); lua_setglobal(L, "DEFAULT_ARCH"); lua_pushliteral(L, LPM_DEFAULT_REPOSITORY); lua_setglobal(L, "DEFAULT_REPO_URL"); lua_pushliteral(L, LPM_DEFAULT_RELEASE); lua_setglobal(L, "DEFAULT_RELEASE_URL"); #ifndef LPM_STATIC if (luaL_loadfile(L, "src/lpm.lua") || lua_pcall(L, 0, 1, 0)) { #else if (luaL_loadbuffer(L, lpm_luac, lpm_luac_len, "lpm.lua") || lua_pcall(L, 0, 1, 0)) { #endif fprintf(stderr, "internal error when starting the application: %s\n", lua_tostring(L, -1)); return -1; } int status = lua_tointeger(L, -1); lua_close(L); #ifndef LPM_NO_GIT if (git_initialized) git_libgit2_shutdown(); #endif return status; }