Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2004-2023 Savoir-faire Linux Inc. |
| 3 | * |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 4 | * This program is free software: you can redistribute it and/or modify |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 5 | * it under the terms of the GNU General Public License as published by |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 6 | * the Free Software Foundation, either version 3 of the License, or |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
Adrien Béraud | cb75362 | 2023-07-17 22:32:49 -0400 | [diff] [blame] | 15 | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 16 | */ |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 17 | #include "fileutils.h" |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 18 | #include <opendht/crypto.h> |
| 19 | |
| 20 | #ifdef RING_UWP |
| 21 | #include <io.h> // for access and close |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 22 | #endif |
| 23 | |
| 24 | #ifdef __APPLE__ |
| 25 | #include <TargetConditionals.h> |
| 26 | #endif |
| 27 | |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 28 | #ifdef _WIN32 |
| 29 | #include <windows.h> |
| 30 | #include "string_utils.h" |
| 31 | #endif |
| 32 | |
| 33 | #include <sys/types.h> |
| 34 | #include <sys/stat.h> |
| 35 | |
| 36 | #ifndef _MSC_VER |
| 37 | #include <libgen.h> |
| 38 | #endif |
| 39 | |
| 40 | #ifdef _MSC_VER |
| 41 | #include "windirent.h" |
| 42 | #else |
| 43 | #include <dirent.h> |
| 44 | #endif |
| 45 | |
| 46 | #include <signal.h> |
| 47 | #include <unistd.h> |
| 48 | #include <fcntl.h> |
| 49 | #ifndef _WIN32 |
| 50 | #include <pwd.h> |
| 51 | #else |
| 52 | #include <shlobj.h> |
| 53 | #define NAME_MAX 255 |
| 54 | #endif |
| 55 | #if !defined __ANDROID__ && !defined _WIN32 |
| 56 | #include <wordexp.h> |
| 57 | #endif |
| 58 | |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 59 | #include <sstream> |
| 60 | #include <fstream> |
| 61 | #include <iostream> |
| 62 | #include <stdexcept> |
| 63 | #include <limits> |
| 64 | #include <array> |
| 65 | |
| 66 | #include <cstdlib> |
| 67 | #include <cstring> |
| 68 | #include <cerrno> |
| 69 | #include <cstddef> |
| 70 | #include <ciso646> |
| 71 | |
Adrien Béraud | 9e0f84f | 2023-07-27 16:02:21 -0400 | [diff] [blame] | 72 | extern "C" { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 73 | #include <pj/ctype.h> |
| 74 | #include <pjlib-util/md5.h> |
Adrien Béraud | 9e0f84f | 2023-07-27 16:02:21 -0400 | [diff] [blame] | 75 | } |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 76 | |
| 77 | #include <filesystem> |
| 78 | |
| 79 | #define PIDFILE ".ring.pid" |
| 80 | #define ERASE_BLOCK 4096 |
| 81 | |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 82 | namespace dhtnet { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 83 | namespace fileutils { |
| 84 | |
| 85 | // returns true if directory exists |
| 86 | bool |
| 87 | check_dir(const char* path, [[maybe_unused]] mode_t dirmode, mode_t parentmode) |
| 88 | { |
| 89 | DIR* dir = opendir(path); |
| 90 | |
| 91 | if (!dir) { // doesn't exist |
| 92 | if (not recursive_mkdir(path, parentmode)) { |
| 93 | perror(path); |
| 94 | return false; |
| 95 | } |
| 96 | #ifndef _WIN32 |
| 97 | if (chmod(path, dirmode) < 0) { |
| 98 | //JAMI_ERR("fileutils::check_dir(): chmod() failed on '%s', %s", path, strerror(errno)); |
| 99 | return false; |
| 100 | } |
| 101 | #endif |
| 102 | } else |
| 103 | closedir(dir); |
| 104 | return true; |
| 105 | } |
| 106 | |
| 107 | std::string |
| 108 | expand_path(const std::string& path) |
| 109 | { |
| 110 | #if defined __ANDROID__ || defined _MSC_VER || defined WIN32 || defined __APPLE__ |
| 111 | //JAMI_ERR("Path expansion not implemented, returning original"); |
| 112 | return path; |
| 113 | #else |
| 114 | |
| 115 | std::string result; |
| 116 | |
| 117 | wordexp_t p; |
| 118 | int ret = wordexp(path.c_str(), &p, 0); |
| 119 | |
| 120 | switch (ret) { |
| 121 | case WRDE_BADCHAR: |
Adrien Béraud | f3d16a3 | 2023-06-02 08:35:58 -0400 | [diff] [blame] | 122 | /*JAMI_ERR("Illegal occurrence of newline or one of |, &, ;, <, >, " |
| 123 | "(, ), {, }.");*/ |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 124 | return result; |
| 125 | case WRDE_BADVAL: |
Adrien Béraud | f3d16a3 | 2023-06-02 08:35:58 -0400 | [diff] [blame] | 126 | //JAMI_ERR("An undefined shell variable was referenced"); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 127 | return result; |
| 128 | case WRDE_CMDSUB: |
Adrien Béraud | f3d16a3 | 2023-06-02 08:35:58 -0400 | [diff] [blame] | 129 | //JAMI_ERR("Command substitution occurred"); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 130 | return result; |
| 131 | case WRDE_SYNTAX: |
Adrien Béraud | f3d16a3 | 2023-06-02 08:35:58 -0400 | [diff] [blame] | 132 | //JAMI_ERR("Shell syntax error"); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 133 | return result; |
| 134 | case WRDE_NOSPACE: |
Adrien Béraud | f3d16a3 | 2023-06-02 08:35:58 -0400 | [diff] [blame] | 135 | //JAMI_ERR("Out of memory."); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 136 | // This is the only error where we must call wordfree |
| 137 | break; |
| 138 | default: |
| 139 | if (p.we_wordc > 0) |
| 140 | result = std::string(p.we_wordv[0]); |
| 141 | break; |
| 142 | } |
| 143 | |
| 144 | wordfree(&p); |
| 145 | |
| 146 | return result; |
| 147 | #endif |
| 148 | } |
| 149 | |
| 150 | std::mutex& |
| 151 | getFileLock(const std::string& path) |
| 152 | { |
| 153 | static std::mutex fileLockLock {}; |
| 154 | static std::map<std::string, std::mutex> fileLocks {}; |
| 155 | |
| 156 | std::lock_guard<std::mutex> l(fileLockLock); |
| 157 | return fileLocks[path]; |
| 158 | } |
| 159 | |
| 160 | bool |
| 161 | isFile(const std::string& path, bool resolveSymlink) |
| 162 | { |
| 163 | if (path.empty()) |
| 164 | return false; |
| 165 | #ifdef _WIN32 |
| 166 | if (resolveSymlink) { |
| 167 | struct _stat64i32 s; |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 168 | if (_wstat(dhtnet::to_wstring(path).c_str(), &s) == 0) |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 169 | return S_ISREG(s.st_mode); |
| 170 | } else { |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 171 | DWORD attr = GetFileAttributes(dhtnet::to_wstring(path).c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 172 | if ((attr != INVALID_FILE_ATTRIBUTES) && !(attr & FILE_ATTRIBUTE_DIRECTORY) |
| 173 | && !(attr & FILE_ATTRIBUTE_REPARSE_POINT)) |
| 174 | return true; |
| 175 | } |
| 176 | #else |
| 177 | if (resolveSymlink) { |
| 178 | struct stat s; |
| 179 | if (stat(path.c_str(), &s) == 0) |
| 180 | return S_ISREG(s.st_mode); |
| 181 | } else { |
| 182 | struct stat s; |
| 183 | if (lstat(path.c_str(), &s) == 0) |
| 184 | return S_ISREG(s.st_mode); |
| 185 | } |
| 186 | #endif |
| 187 | |
| 188 | return false; |
| 189 | } |
| 190 | |
| 191 | bool |
| 192 | isDirectory(const std::string& path) |
| 193 | { |
| 194 | struct stat s; |
| 195 | if (stat(path.c_str(), &s) == 0) |
| 196 | return s.st_mode & S_IFDIR; |
| 197 | return false; |
| 198 | } |
| 199 | |
| 200 | bool |
| 201 | isDirectoryWritable(const std::string& directory) |
| 202 | { |
| 203 | return accessFile(directory, W_OK) == 0; |
| 204 | } |
| 205 | |
| 206 | bool |
| 207 | hasHardLink(const std::string& path) |
| 208 | { |
| 209 | #ifndef _WIN32 |
| 210 | struct stat s; |
| 211 | if (lstat(path.c_str(), &s) == 0) |
| 212 | return s.st_nlink > 1; |
| 213 | #endif |
| 214 | return false; |
| 215 | } |
| 216 | |
| 217 | bool |
| 218 | isSymLink(const std::string& path) |
| 219 | { |
| 220 | #ifndef _WIN32 |
| 221 | struct stat s; |
| 222 | if (lstat(path.c_str(), &s) == 0) |
| 223 | return S_ISLNK(s.st_mode); |
| 224 | #elif !defined(_MSC_VER) |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 225 | DWORD attr = GetFileAttributes(dhtnet::to_wstring(path).c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 226 | if (attr & FILE_ATTRIBUTE_REPARSE_POINT) |
| 227 | return true; |
| 228 | #endif |
| 229 | return false; |
| 230 | } |
| 231 | |
| 232 | std::chrono::system_clock::time_point |
| 233 | writeTime(const std::string& path) |
| 234 | { |
| 235 | #ifndef _WIN32 |
| 236 | struct stat s; |
| 237 | auto ret = stat(path.c_str(), &s); |
| 238 | if (ret) |
| 239 | throw std::runtime_error("Can't check write time for: " + path); |
| 240 | return std::chrono::system_clock::from_time_t(s.st_mtime); |
| 241 | #else |
| 242 | #if RING_UWP |
| 243 | _CREATEFILE2_EXTENDED_PARAMETERS ext_params = {0}; |
| 244 | ext_params.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS); |
| 245 | ext_params.dwFileAttributes = FILE_ATTRIBUTE_NORMAL; |
| 246 | ext_params.dwFileFlags = FILE_FLAG_NO_BUFFERING; |
| 247 | ext_params.dwSecurityQosFlags = SECURITY_ANONYMOUS; |
| 248 | ext_params.lpSecurityAttributes = nullptr; |
| 249 | ext_params.hTemplateFile = nullptr; |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 250 | HANDLE h = CreateFile2(dhtnet::to_wstring(path).c_str(), |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 251 | GENERIC_READ, |
| 252 | FILE_SHARE_READ, |
| 253 | OPEN_EXISTING, |
| 254 | &ext_params); |
| 255 | #elif _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 256 | HANDLE h = CreateFileW(dhtnet::to_wstring(path).c_str(), |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 257 | GENERIC_READ, |
| 258 | FILE_SHARE_READ, |
| 259 | nullptr, |
| 260 | OPEN_EXISTING, |
| 261 | FILE_ATTRIBUTE_NORMAL, |
| 262 | nullptr); |
| 263 | #endif |
| 264 | if (h == INVALID_HANDLE_VALUE) |
| 265 | throw std::runtime_error("Can't open: " + path); |
| 266 | FILETIME lastWriteTime; |
| 267 | if (!GetFileTime(h, nullptr, nullptr, &lastWriteTime)) |
| 268 | throw std::runtime_error("Can't check write time for: " + path); |
| 269 | CloseHandle(h); |
| 270 | SYSTEMTIME sTime; |
| 271 | if (!FileTimeToSystemTime(&lastWriteTime, &sTime)) |
| 272 | throw std::runtime_error("Can't check write time for: " + path); |
| 273 | struct tm tm |
| 274 | {}; |
| 275 | tm.tm_year = sTime.wYear - 1900; |
| 276 | tm.tm_mon = sTime.wMonth - 1; |
| 277 | tm.tm_mday = sTime.wDay; |
| 278 | tm.tm_hour = sTime.wHour; |
| 279 | tm.tm_min = sTime.wMinute; |
| 280 | tm.tm_sec = sTime.wSecond; |
| 281 | tm.tm_isdst = -1; |
| 282 | return std::chrono::system_clock::from_time_t(mktime(&tm)); |
| 283 | #endif |
| 284 | } |
| 285 | |
| 286 | bool |
| 287 | createSymlink(const std::string& linkFile, const std::string& target) |
| 288 | { |
| 289 | try { |
| 290 | std::filesystem::create_symlink(target, linkFile); |
| 291 | } catch (const std::exception& e) { |
| 292 | //JAMI_ERR("Couldn't create soft link: %s", e.what()); |
| 293 | return false; |
| 294 | } |
| 295 | return true; |
| 296 | } |
| 297 | |
| 298 | bool |
| 299 | createHardlink(const std::string& linkFile, const std::string& target) |
| 300 | { |
| 301 | try { |
| 302 | std::filesystem::create_hard_link(target, linkFile); |
| 303 | } catch (const std::exception& e) { |
| 304 | //JAMI_ERR("Couldn't create hard link: %s", e.what()); |
| 305 | return false; |
| 306 | } |
| 307 | return true; |
| 308 | } |
| 309 | |
| 310 | void |
| 311 | createFileLink(const std::string& linkFile, const std::string& target, bool hard) |
| 312 | { |
| 313 | if (not hard or not createHardlink(linkFile, target)) |
| 314 | createSymlink(linkFile, target); |
| 315 | } |
| 316 | |
| 317 | std::string_view |
| 318 | getFileExtension(std::string_view filename) |
| 319 | { |
| 320 | std::string_view result; |
| 321 | auto sep = filename.find_last_of('.'); |
| 322 | if (sep != std::string_view::npos && sep != filename.size() - 1) |
| 323 | result = filename.substr(sep + 1); |
| 324 | if (result.size() >= 8) |
| 325 | return {}; |
| 326 | return result; |
| 327 | } |
| 328 | |
| 329 | bool |
| 330 | isPathRelative(const std::string& path) |
| 331 | { |
| 332 | #ifndef _WIN32 |
| 333 | return not path.empty() and not(path[0] == '/'); |
| 334 | #else |
| 335 | return not path.empty() and path.find(":") == std::string::npos; |
| 336 | #endif |
| 337 | } |
| 338 | |
| 339 | std::string |
| 340 | getCleanPath(const std::string& base, const std::string& path) |
| 341 | { |
| 342 | if (base.empty() or path.size() < base.size()) |
| 343 | return path; |
| 344 | auto base_sep = base + DIR_SEPARATOR_STR; |
| 345 | if (path.compare(0, base_sep.size(), base_sep) == 0) |
| 346 | return path.substr(base_sep.size()); |
| 347 | else |
| 348 | return path; |
| 349 | } |
| 350 | |
| 351 | std::string |
| 352 | getFullPath(const std::string& base, const std::string& path) |
| 353 | { |
| 354 | bool isRelative {not base.empty() and isPathRelative(path)}; |
| 355 | return isRelative ? base + DIR_SEPARATOR_STR + path : path; |
| 356 | } |
| 357 | |
| 358 | std::vector<uint8_t> |
| 359 | loadFile(const std::string& path, const std::string& default_dir) |
| 360 | { |
| 361 | std::vector<uint8_t> buffer; |
| 362 | std::ifstream file = ifstream(getFullPath(default_dir, path), std::ios::binary); |
| 363 | if (!file) |
| 364 | throw std::runtime_error("Can't read file: " + path); |
| 365 | file.seekg(0, std::ios::end); |
| 366 | auto size = file.tellg(); |
| 367 | if (size > std::numeric_limits<unsigned>::max()) |
| 368 | throw std::runtime_error("File is too big: " + path); |
| 369 | buffer.resize(size); |
| 370 | file.seekg(0, std::ios::beg); |
| 371 | if (!file.read((char*) buffer.data(), size)) |
| 372 | throw std::runtime_error("Can't load file: " + path); |
| 373 | return buffer; |
| 374 | } |
| 375 | |
| 376 | std::string |
| 377 | loadTextFile(const std::string& path, const std::string& default_dir) |
| 378 | { |
| 379 | std::string buffer; |
| 380 | std::ifstream file = ifstream(getFullPath(default_dir, path)); |
| 381 | if (!file) |
| 382 | throw std::runtime_error("Can't read file: " + path); |
| 383 | file.seekg(0, std::ios::end); |
| 384 | auto size = file.tellg(); |
| 385 | if (size > std::numeric_limits<unsigned>::max()) |
| 386 | throw std::runtime_error("File is too big: " + path); |
| 387 | buffer.resize(size); |
| 388 | file.seekg(0, std::ios::beg); |
| 389 | if (!file.read((char*) buffer.data(), size)) |
| 390 | throw std::runtime_error("Can't load file: " + path); |
| 391 | return buffer; |
| 392 | } |
| 393 | |
| 394 | void |
| 395 | saveFile(const std::string& path, const uint8_t* data, size_t data_size, [[maybe_unused]] mode_t mode) |
| 396 | { |
| 397 | std::ofstream file = fileutils::ofstream(path, std::ios::trunc | std::ios::binary); |
| 398 | if (!file.is_open()) { |
| 399 | //JAMI_ERR("Could not write data to %s", path.c_str()); |
| 400 | return; |
| 401 | } |
| 402 | file.write((char*) data, data_size); |
| 403 | #ifndef _WIN32 |
| 404 | if (chmod(path.c_str(), mode) < 0) |
| 405 | /*JAMI_WARN("fileutils::saveFile(): chmod() failed on '%s', %s", |
| 406 | path.c_str(), |
| 407 | strerror(errno))*/; |
| 408 | #endif |
| 409 | } |
| 410 | |
| 411 | std::vector<uint8_t> |
| 412 | loadCacheFile(const std::string& path, std::chrono::system_clock::duration maxAge) |
| 413 | { |
| 414 | // writeTime throws exception if file doesn't exist |
| 415 | auto duration = std::chrono::system_clock::now() - writeTime(path); |
| 416 | if (duration > maxAge) |
| 417 | throw std::runtime_error("file too old"); |
| 418 | |
| 419 | //JAMI_DBG("Loading cache file '%.*s'", (int) path.size(), path.c_str()); |
| 420 | return loadFile(path); |
| 421 | } |
| 422 | |
| 423 | std::string |
| 424 | loadCacheTextFile(const std::string& path, std::chrono::system_clock::duration maxAge) |
| 425 | { |
| 426 | // writeTime throws exception if file doesn't exist |
| 427 | auto duration = std::chrono::system_clock::now() - writeTime(path); |
| 428 | if (duration > maxAge) |
| 429 | throw std::runtime_error("file too old"); |
| 430 | |
| 431 | //JAMI_DBG("Loading cache file '%.*s'", (int) path.size(), path.c_str()); |
| 432 | return loadTextFile(path); |
| 433 | } |
| 434 | |
| 435 | static size_t |
| 436 | dirent_buf_size([[maybe_unused]] DIR* dirp) |
| 437 | { |
| 438 | long name_max; |
| 439 | #if defined(HAVE_FPATHCONF) && defined(HAVE_DIRFD) && defined(_PC_NAME_MAX) |
| 440 | name_max = fpathconf(dirfd(dirp), _PC_NAME_MAX); |
| 441 | if (name_max == -1) |
| 442 | #if defined(NAME_MAX) |
| 443 | name_max = (NAME_MAX > 255) ? NAME_MAX : 255; |
| 444 | #else |
| 445 | return (size_t) (-1); |
| 446 | #endif |
| 447 | #else |
| 448 | #if defined(NAME_MAX) |
| 449 | name_max = (NAME_MAX > 255) ? NAME_MAX : 255; |
| 450 | #else |
| 451 | #error "buffer size for readdir_r cannot be determined" |
| 452 | #endif |
| 453 | #endif |
| 454 | size_t name_end = (size_t) offsetof(struct dirent, d_name) + name_max + 1; |
| 455 | return name_end > sizeof(struct dirent) ? name_end : sizeof(struct dirent); |
| 456 | } |
| 457 | |
| 458 | std::vector<std::string> |
| 459 | readDirectory(const std::string& dir) |
| 460 | { |
| 461 | DIR* dp = opendir(dir.c_str()); |
| 462 | if (!dp) |
| 463 | return {}; |
| 464 | |
| 465 | size_t size = dirent_buf_size(dp); |
| 466 | if (size == (size_t) (-1)) |
| 467 | return {}; |
| 468 | std::vector<uint8_t> buf(size); |
| 469 | dirent* entry; |
| 470 | |
| 471 | std::vector<std::string> files; |
| 472 | #ifndef _WIN32 |
| 473 | while (!readdir_r(dp, reinterpret_cast<dirent*>(buf.data()), &entry) && entry) { |
| 474 | #else |
| 475 | while ((entry = readdir(dp)) != nullptr) { |
| 476 | #endif |
| 477 | std::string fname {entry->d_name}; |
| 478 | if (fname == "." || fname == "..") |
| 479 | continue; |
| 480 | files.emplace_back(std::move(fname)); |
| 481 | } |
| 482 | closedir(dp); |
| 483 | return files; |
| 484 | } // namespace fileutils |
| 485 | |
| 486 | /* |
| 487 | std::vector<uint8_t> |
| 488 | readArchive(const std::string& path, const std::string& pwd) |
| 489 | { |
| 490 | JAMI_DBG("Reading archive from %s", path.c_str()); |
| 491 | |
| 492 | auto isUnencryptedGzip = [](const std::vector<uint8_t>& data) { |
| 493 | // NOTE: some webserver modify gzip files and this can end with a gunzip in a gunzip |
| 494 | // file. So, to make the readArchive more robust, we can support this case by detecting |
| 495 | // gzip header via 1f8b 08 |
| 496 | // We don't need to support more than 2 level, else somebody may be able to send |
| 497 | // gunzip in loops and abuse. |
| 498 | return data.size() > 3 && data[0] == 0x1f && data[1] == 0x8b && data[2] == 0x08; |
| 499 | }; |
| 500 | |
| 501 | auto decompress = [](std::vector<uint8_t>& data) { |
| 502 | try { |
| 503 | data = archiver::decompress(data); |
| 504 | } catch (const std::exception& e) { |
| 505 | JAMI_ERR("Error decrypting archive: %s", e.what()); |
| 506 | throw e; |
| 507 | } |
| 508 | }; |
| 509 | |
| 510 | std::vector<uint8_t> data; |
| 511 | // Read file |
| 512 | try { |
| 513 | data = loadFile(path); |
| 514 | } catch (const std::exception& e) { |
| 515 | JAMI_ERR("Error loading archive: %s", e.what()); |
| 516 | throw e; |
| 517 | } |
| 518 | |
| 519 | if (isUnencryptedGzip(data)) { |
| 520 | if (!pwd.empty()) |
| 521 | JAMI_WARN() << "A gunzip in a gunzip is detected. A webserver may have a bad config"; |
| 522 | |
| 523 | decompress(data); |
| 524 | } |
| 525 | |
| 526 | if (!pwd.empty()) { |
| 527 | // Decrypt |
| 528 | try { |
| 529 | data = dht::crypto::aesDecrypt(data, pwd); |
| 530 | } catch (const std::exception& e) { |
| 531 | JAMI_ERR("Error decrypting archive: %s", e.what()); |
| 532 | throw e; |
| 533 | } |
| 534 | decompress(data); |
| 535 | } else if (isUnencryptedGzip(data)) { |
| 536 | JAMI_WARN() << "A gunzip in a gunzip is detected. A webserver may have a bad config"; |
| 537 | decompress(data); |
| 538 | } |
| 539 | return data; |
| 540 | } |
| 541 | |
| 542 | void |
| 543 | writeArchive(const std::string& archive_str, const std::string& path, const std::string& password) |
| 544 | { |
| 545 | JAMI_DBG("Writing archive to %s", path.c_str()); |
| 546 | |
| 547 | if (not password.empty()) { |
| 548 | // Encrypt using provided password |
| 549 | std::vector<uint8_t> data = dht::crypto::aesEncrypt(archiver::compress(archive_str), |
| 550 | password); |
| 551 | // Write |
| 552 | try { |
| 553 | saveFile(path, data); |
| 554 | } catch (const std::runtime_error& ex) { |
| 555 | JAMI_ERR("Export failed: %s", ex.what()); |
| 556 | return; |
| 557 | } |
| 558 | } else { |
| 559 | JAMI_WARN("Unsecured archiving (no password)"); |
| 560 | archiver::compressGzip(archive_str, path); |
| 561 | } |
| 562 | }*/ |
| 563 | |
| 564 | bool |
| 565 | recursive_mkdir(const std::string& path, mode_t mode) |
| 566 | { |
| 567 | #ifndef _WIN32 |
| 568 | if (mkdir(path.data(), mode) != 0) { |
| 569 | #else |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 570 | if (_wmkdir(dhtnet::to_wstring(path.data()).c_str()) != 0) { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 571 | #endif |
| 572 | if (errno == ENOENT) { |
| 573 | recursive_mkdir(path.substr(0, path.find_last_of(DIR_SEPARATOR_CH)), mode); |
| 574 | #ifndef _WIN32 |
| 575 | if (mkdir(path.data(), mode) != 0) { |
| 576 | #else |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 577 | if (_wmkdir(dhtnet::to_wstring(path.data()).c_str()) != 0) { |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 578 | #endif |
| 579 | //JAMI_ERR("Could not create directory."); |
| 580 | return false; |
| 581 | } |
| 582 | } |
Sébastien Blin | 464bdff | 2023-07-19 08:02:53 -0400 | [diff] [blame] | 583 | } // namespace dhtnet |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 584 | return true; |
| 585 | } |
| 586 | |
| 587 | #ifdef _WIN32 |
| 588 | bool |
| 589 | eraseFile_win32(const std::string& path, bool dosync) |
| 590 | { |
| 591 | HANDLE h |
| 592 | = CreateFileA(path.c_str(), GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); |
| 593 | if (h == INVALID_HANDLE_VALUE) { |
Morteza Namvar | 5f63952 | 2023-07-04 17:08:58 -0400 | [diff] [blame] | 594 | // JAMI_WARN("Can not open file %s for erasing.", path.c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 595 | return false; |
| 596 | } |
| 597 | |
| 598 | LARGE_INTEGER size; |
| 599 | if (!GetFileSizeEx(h, &size)) { |
Morteza Namvar | 5f63952 | 2023-07-04 17:08:58 -0400 | [diff] [blame] | 600 | // JAMI_WARN("Can not erase file %s: GetFileSizeEx() failed.", path.c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 601 | CloseHandle(h); |
| 602 | return false; |
| 603 | } |
| 604 | if (size.QuadPart == 0) { |
| 605 | CloseHandle(h); |
| 606 | return false; |
| 607 | } |
| 608 | |
| 609 | uint64_t size_blocks = size.QuadPart / ERASE_BLOCK; |
| 610 | if (size.QuadPart % ERASE_BLOCK) |
| 611 | size_blocks++; |
| 612 | |
| 613 | char* buffer; |
| 614 | try { |
| 615 | buffer = new char[ERASE_BLOCK]; |
| 616 | } catch (std::bad_alloc& ba) { |
Morteza Namvar | 5f63952 | 2023-07-04 17:08:58 -0400 | [diff] [blame] | 617 | // JAMI_WARN("Can not allocate buffer for erasing %s.", path.c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 618 | CloseHandle(h); |
| 619 | return false; |
| 620 | } |
| 621 | memset(buffer, 0x00, ERASE_BLOCK); |
| 622 | |
| 623 | OVERLAPPED ovlp; |
| 624 | if (size.QuadPart < (1024 - 42)) { // a small file can be stored in the MFT record |
| 625 | ovlp.Offset = 0; |
| 626 | ovlp.OffsetHigh = 0; |
| 627 | WriteFile(h, buffer, (DWORD) size.QuadPart, 0, &ovlp); |
| 628 | FlushFileBuffers(h); |
| 629 | } |
| 630 | for (uint64_t i = 0; i < size_blocks; i++) { |
| 631 | uint64_t offset = i * ERASE_BLOCK; |
| 632 | ovlp.Offset = offset & 0x00000000FFFFFFFF; |
| 633 | ovlp.OffsetHigh = offset >> 32; |
| 634 | WriteFile(h, buffer, ERASE_BLOCK, 0, &ovlp); |
| 635 | } |
| 636 | |
| 637 | delete[] buffer; |
| 638 | |
| 639 | if (dosync) |
| 640 | FlushFileBuffers(h); |
| 641 | |
| 642 | CloseHandle(h); |
| 643 | return true; |
| 644 | } |
| 645 | |
| 646 | #else |
| 647 | |
| 648 | bool |
| 649 | eraseFile_posix(const std::string& path, bool dosync) |
| 650 | { |
| 651 | struct stat st; |
| 652 | if (stat(path.c_str(), &st) == -1) { |
| 653 | //JAMI_WARN("Can not erase file %s: fstat() failed.", path.c_str()); |
| 654 | return false; |
| 655 | } |
| 656 | // Remove read-only flag if possible |
| 657 | chmod(path.c_str(), st.st_mode | (S_IWGRP+S_IWUSR) ); |
| 658 | |
| 659 | int fd = open(path.c_str(), O_WRONLY); |
| 660 | if (fd == -1) { |
| 661 | //JAMI_WARN("Can not open file %s for erasing.", path.c_str()); |
| 662 | return false; |
| 663 | } |
| 664 | |
| 665 | if (st.st_size == 0) { |
| 666 | close(fd); |
| 667 | return false; |
| 668 | } |
| 669 | |
| 670 | lseek(fd, 0, SEEK_SET); |
| 671 | |
| 672 | std::array<char, ERASE_BLOCK> buffer; |
| 673 | buffer.fill(0); |
| 674 | decltype(st.st_size) written(0); |
| 675 | while (written < st.st_size) { |
| 676 | auto ret = write(fd, buffer.data(), buffer.size()); |
| 677 | if (ret < 0) { |
| 678 | //JAMI_WARNING("Error while overriding file with zeros."); |
| 679 | break; |
| 680 | } else |
| 681 | written += ret; |
| 682 | } |
| 683 | |
| 684 | if (dosync) |
| 685 | fsync(fd); |
| 686 | |
| 687 | close(fd); |
| 688 | return written >= st.st_size; |
| 689 | } |
| 690 | #endif |
| 691 | |
| 692 | bool |
| 693 | eraseFile(const std::string& path, bool dosync) |
| 694 | { |
| 695 | #ifdef _WIN32 |
| 696 | return eraseFile_win32(path, dosync); |
| 697 | #else |
| 698 | return eraseFile_posix(path, dosync); |
| 699 | #endif |
| 700 | } |
| 701 | |
| 702 | int |
| 703 | remove(const std::string& path, bool erase) |
| 704 | { |
| 705 | if (erase and isFile(path, false) and !hasHardLink(path)) |
| 706 | eraseFile(path, true); |
| 707 | |
| 708 | #ifdef _WIN32 |
| 709 | // use Win32 api since std::remove will not unlink directory in use |
| 710 | if (isDirectory(path)) |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 711 | return !RemoveDirectory(dhtnet::to_wstring(path).c_str()); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 712 | #endif |
| 713 | |
| 714 | return std::remove(path.c_str()); |
| 715 | } |
| 716 | |
| 717 | int |
| 718 | removeAll(const std::string& path, bool erase) |
| 719 | { |
| 720 | if (path.empty()) |
| 721 | return -1; |
| 722 | if (isDirectory(path) and !isSymLink(path)) { |
| 723 | auto dir = path; |
| 724 | if (dir.back() != DIR_SEPARATOR_CH) |
| 725 | dir += DIR_SEPARATOR_CH; |
| 726 | for (auto& entry : fileutils::readDirectory(dir)) |
| 727 | removeAll(dir + entry, erase); |
| 728 | } |
| 729 | return remove(path, erase); |
| 730 | } |
| 731 | |
| 732 | void |
| 733 | openStream(std::ifstream& file, const std::string& path, std::ios_base::openmode mode) |
| 734 | { |
| 735 | #ifdef _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 736 | file.open(dhtnet::to_wstring(path), mode); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 737 | #else |
| 738 | file.open(path, mode); |
| 739 | #endif |
| 740 | } |
| 741 | |
| 742 | void |
| 743 | openStream(std::ofstream& file, const std::string& path, std::ios_base::openmode mode) |
| 744 | { |
| 745 | #ifdef _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 746 | file.open(dhtnet::to_wstring(path), mode); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 747 | #else |
| 748 | file.open(path, mode); |
| 749 | #endif |
| 750 | } |
| 751 | |
| 752 | std::ifstream |
| 753 | ifstream(const std::string& path, std::ios_base::openmode mode) |
| 754 | { |
| 755 | #ifdef _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 756 | return std::ifstream(dhtnet::to_wstring(path), mode); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 757 | #else |
| 758 | return std::ifstream(path, mode); |
| 759 | #endif |
| 760 | } |
| 761 | |
| 762 | std::ofstream |
| 763 | ofstream(const std::string& path, std::ios_base::openmode mode) |
| 764 | { |
| 765 | #ifdef _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 766 | return std::ofstream(dhtnet::to_wstring(path), mode); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 767 | #else |
| 768 | return std::ofstream(path, mode); |
| 769 | #endif |
| 770 | } |
| 771 | |
| 772 | int64_t |
| 773 | size(const std::string& path) |
| 774 | { |
| 775 | int64_t size = 0; |
| 776 | try { |
| 777 | std::ifstream file; |
| 778 | openStream(file, path, std::ios::binary | std::ios::in); |
| 779 | file.seekg(0, std::ios_base::end); |
| 780 | size = file.tellg(); |
| 781 | file.close(); |
| 782 | } catch (...) { |
| 783 | } |
| 784 | return size; |
| 785 | } |
| 786 | |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 787 | int |
| 788 | accessFile(const std::string& file, int mode) |
| 789 | { |
| 790 | #ifdef _WIN32 |
Adrien Béraud | 1ae60aa | 2023-07-07 09:55:09 -0400 | [diff] [blame] | 791 | return _waccess(dhtnet::to_wstring(file).c_str(), mode); |
Adrien Béraud | 612b55b | 2023-05-29 10:42:04 -0400 | [diff] [blame] | 792 | #else |
| 793 | return access(file.c_str(), mode); |
| 794 | #endif |
| 795 | } |
| 796 | |
| 797 | uint64_t |
| 798 | lastWriteTime(const std::string& p) |
| 799 | { |
| 800 | #if USE_STD_FILESYSTEM |
| 801 | return std::chrono::duration_cast<std::chrono::milliseconds>( |
| 802 | std::filesystem::last_write_time(std::filesystem::path(p)).time_since_epoch()) |
| 803 | .count(); |
| 804 | #else |
| 805 | struct stat result; |
| 806 | if (stat(p.c_str(), &result) == 0) |
| 807 | return result.st_mtime; |
| 808 | return 0; |
| 809 | #endif |
| 810 | } |
| 811 | |
| 812 | } // namespace fileutils |
Sébastien Blin | 464bdff | 2023-07-19 08:02:53 -0400 | [diff] [blame] | 813 | } // namespace dhtnet |