[24167] | 1 | /* Copyright © 2005-2007 Roger Leigh <rleigh@debian.org> |
---|
| 2 | * |
---|
| 3 | * schroot is free software: you can redistribute it and/or modify it |
---|
| 4 | * under the terms of the GNU General Public License as published by |
---|
| 5 | * the Free Software Foundation, either version 3 of the License, or |
---|
| 6 | * (at your option) any later version. |
---|
| 7 | * |
---|
| 8 | * schroot is distributed in the hope that it will be useful, but |
---|
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
| 11 | * General Public License for more details. |
---|
| 12 | * |
---|
| 13 | * You should have received a copy of the GNU General Public License |
---|
| 14 | * along with this program. If not, see |
---|
| 15 | * <http://www.gnu.org/licenses/>. |
---|
| 16 | * |
---|
| 17 | *********************************************************************/ |
---|
| 18 | |
---|
| 19 | #include <config.h> |
---|
| 20 | |
---|
| 21 | #include "sbuild-chroot.h" |
---|
| 22 | #include "sbuild-error.h" |
---|
| 23 | #include "sbuild-util.h" |
---|
| 24 | |
---|
| 25 | #include <cerrno> |
---|
| 26 | #include <cstring> |
---|
| 27 | |
---|
| 28 | #include <sys/types.h> |
---|
| 29 | #include <sys/stat.h> |
---|
| 30 | #include <unistd.h> |
---|
| 31 | |
---|
| 32 | #ifdef HAVE_UUID |
---|
| 33 | #include <uuid/uuid.h> |
---|
| 34 | #else |
---|
| 35 | #include <time.h> |
---|
| 36 | #endif |
---|
| 37 | |
---|
[24314] | 38 | #include <boost/filesystem/convenience.hpp> |
---|
| 39 | |
---|
[24167] | 40 | using namespace sbuild; |
---|
| 41 | |
---|
| 42 | namespace |
---|
| 43 | { |
---|
| 44 | |
---|
| 45 | /** |
---|
| 46 | * Remove duplicate adjacent characters from a string. |
---|
| 47 | * |
---|
| 48 | * @param str the string to check. |
---|
| 49 | * @param dup the duplicate character to check for. |
---|
| 50 | * @returns a string with any duplicates removed. |
---|
| 51 | */ |
---|
| 52 | std::string remove_duplicates (std::string const& str, |
---|
| 53 | char dup) |
---|
| 54 | { |
---|
| 55 | std::string ret; |
---|
| 56 | |
---|
| 57 | for (std::string::size_type pos = 0; |
---|
| 58 | pos < str.length(); |
---|
| 59 | ++pos) |
---|
| 60 | { |
---|
| 61 | ret += str[pos]; |
---|
| 62 | if (str[pos] == dup) |
---|
| 63 | { |
---|
| 64 | while (pos + 1 < str.length() && |
---|
| 65 | str[pos + 1] == dup) |
---|
| 66 | ++pos; |
---|
| 67 | } |
---|
| 68 | } |
---|
| 69 | |
---|
| 70 | return ret; |
---|
| 71 | } |
---|
| 72 | |
---|
| 73 | typedef std::pair<sbuild::stat::error_code,const char *> emap; |
---|
| 74 | |
---|
| 75 | /** |
---|
| 76 | * This is a list of the supported error codes. It's used to |
---|
| 77 | * construct the real error codes map. |
---|
| 78 | */ |
---|
| 79 | emap init_errors[] = |
---|
| 80 | { |
---|
| 81 | emap(sbuild::stat::FILE, N_("Failed to stat file")), |
---|
| 82 | emap(sbuild::stat::FD, N_("Failed to stat file descriptor")) |
---|
| 83 | }; |
---|
| 84 | |
---|
| 85 | bool chroot_alphasort (sbuild::chroot::ptr const& c1, |
---|
| 86 | sbuild::chroot::ptr const& c2) |
---|
| 87 | { |
---|
| 88 | return c1->get_name() < c2->get_name(); |
---|
| 89 | } |
---|
| 90 | |
---|
| 91 | } |
---|
| 92 | |
---|
| 93 | template<> |
---|
| 94 | error<sbuild::stat::error_code>::map_type |
---|
| 95 | error<sbuild::stat::error_code>::error_strings |
---|
| 96 | (init_errors, |
---|
| 97 | init_errors + (sizeof(init_errors) / sizeof(init_errors[0]))); |
---|
| 98 | |
---|
| 99 | std::string |
---|
[24314] | 100 | sbuild::basename (std::string name) |
---|
[24167] | 101 | { |
---|
[24314] | 102 | const char separator = '/'; |
---|
| 103 | |
---|
[24167] | 104 | // Remove trailing separators |
---|
| 105 | std::string::size_type cur = name.length(); |
---|
| 106 | while (cur - 1 != 0 && name[cur - 1] == separator) |
---|
| 107 | --cur; |
---|
| 108 | name.resize(cur); |
---|
| 109 | |
---|
| 110 | // Find last separator |
---|
| 111 | std::string::size_type pos = name.rfind(separator); |
---|
| 112 | |
---|
| 113 | std::string ret; |
---|
| 114 | if (pos == std::string::npos) |
---|
| 115 | ret = name; // No separators |
---|
| 116 | else if (pos == 0 && name.length() == 1 && name[0] == separator) |
---|
| 117 | ret = separator; // Only separators |
---|
| 118 | else |
---|
| 119 | ret = name.substr(pos + 1); // Basename only |
---|
| 120 | |
---|
| 121 | return remove_duplicates(ret, separator); |
---|
| 122 | } |
---|
| 123 | |
---|
| 124 | std::string |
---|
[24314] | 125 | sbuild::dirname (std::string name) |
---|
[24167] | 126 | { |
---|
[24314] | 127 | const char separator = '/'; |
---|
| 128 | |
---|
[24167] | 129 | // Remove trailing separators |
---|
| 130 | std::string::size_type cur = name.length(); |
---|
| 131 | while (cur - 1 != 0 && name[cur - 1] == separator) |
---|
| 132 | --cur; |
---|
| 133 | name.resize(cur); |
---|
| 134 | |
---|
| 135 | // Find last separator |
---|
| 136 | std::string::size_type pos = name.rfind(separator); |
---|
| 137 | |
---|
| 138 | std::string ret; |
---|
| 139 | if (pos == std::string::npos) |
---|
| 140 | ret = "."; // No directory components |
---|
| 141 | else if (pos == 0) |
---|
| 142 | ret = separator; |
---|
| 143 | else |
---|
| 144 | ret = name.substr(0, pos); // Dirname part |
---|
| 145 | |
---|
| 146 | return remove_duplicates(ret, separator); |
---|
| 147 | } |
---|
| 148 | |
---|
| 149 | std::string |
---|
[24314] | 150 | sbuild::normalname (std::string name) |
---|
[24167] | 151 | { |
---|
[24314] | 152 | const char separator = '/'; |
---|
| 153 | |
---|
[24167] | 154 | // Remove trailing separators |
---|
| 155 | std::string::size_type cur = name.length(); |
---|
| 156 | while (cur - 1 != 0 && name[cur - 1] == separator) |
---|
| 157 | --cur; |
---|
| 158 | name.resize(cur); |
---|
| 159 | |
---|
| 160 | return remove_duplicates(name, separator); |
---|
| 161 | } |
---|
| 162 | |
---|
| 163 | bool |
---|
| 164 | sbuild::is_absname (std::string const& name) |
---|
| 165 | { |
---|
| 166 | if (name.empty() || name[0] != '/') |
---|
| 167 | return false; |
---|
| 168 | else |
---|
| 169 | return true; |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | bool |
---|
| 173 | sbuild::is_valid_filename (std::string const& name, |
---|
| 174 | bool lsb_mode) |
---|
| 175 | { |
---|
| 176 | bool match = false; |
---|
| 177 | |
---|
| 178 | if (lsb_mode) |
---|
| 179 | { |
---|
| 180 | static regex lanana_namespace("^[a-z0-9]+$"); |
---|
| 181 | static regex lsb_namespace("^_?([a-z0-9_.]+-)+[a-z0-9]+$"); |
---|
| 182 | static regex debian_cron_namespace("^[a-z0-9][a-z0-9-]*$"); |
---|
| 183 | static regex debian_dpkg_conffile_cruft("dpkg-(old|dist|new|tmp)$"); |
---|
| 184 | |
---|
| 185 | if ((regex_search(name, lanana_namespace) || |
---|
| 186 | regex_search(name, lsb_namespace) || |
---|
| 187 | regex_search(name, debian_cron_namespace)) && |
---|
| 188 | !regex_search(name, debian_dpkg_conffile_cruft)) |
---|
| 189 | match = true; |
---|
| 190 | } |
---|
| 191 | else |
---|
| 192 | { |
---|
| 193 | static regex traditional_namespace("^[a-zA-Z0-9_-]$"); |
---|
| 194 | if (regex_search(name, traditional_namespace)) |
---|
| 195 | match = true; |
---|
| 196 | } |
---|
| 197 | |
---|
| 198 | return match; |
---|
| 199 | } |
---|
| 200 | |
---|
| 201 | std::string |
---|
| 202 | sbuild::getcwd () |
---|
| 203 | { |
---|
| 204 | std::string cwd; |
---|
| 205 | |
---|
| 206 | char *raw_cwd = ::getcwd (0, 0); |
---|
| 207 | if (raw_cwd) |
---|
| 208 | cwd = raw_cwd; |
---|
| 209 | else |
---|
| 210 | cwd = "/"; |
---|
| 211 | free(raw_cwd); |
---|
| 212 | |
---|
| 213 | return cwd; |
---|
| 214 | } |
---|
| 215 | |
---|
| 216 | std::string |
---|
| 217 | sbuild::unique_identifier () |
---|
| 218 | { |
---|
| 219 | std::ostringstream id; |
---|
| 220 | id.imbue(std::locale::classic()); |
---|
| 221 | |
---|
| 222 | #ifdef HAVE_UUID |
---|
| 223 | uuid_t uuid; |
---|
| 224 | char uuid_str[37]; |
---|
| 225 | uuid_generate(uuid); |
---|
| 226 | uuid_unparse(uuid, uuid_str); |
---|
| 227 | uuid_clear(uuid); |
---|
| 228 | |
---|
| 229 | id << uuid_str; |
---|
| 230 | #else |
---|
| 231 | id << isodate(time(0)) << '-' << getpid(); |
---|
| 232 | #endif |
---|
| 233 | |
---|
| 234 | return id.str(); |
---|
| 235 | } |
---|
| 236 | |
---|
| 237 | std::string |
---|
| 238 | sbuild::string_list_to_string (sbuild::string_list const& list, |
---|
| 239 | std::string const& separator) |
---|
| 240 | { |
---|
| 241 | std::string ret; |
---|
| 242 | |
---|
| 243 | for (string_list::const_iterator cur = list.begin(); |
---|
| 244 | cur != list.end(); |
---|
| 245 | ++cur) |
---|
| 246 | { |
---|
| 247 | ret += *cur; |
---|
| 248 | if (cur + 1 != list.end()) |
---|
| 249 | ret += separator; |
---|
| 250 | } |
---|
| 251 | |
---|
| 252 | return ret; |
---|
| 253 | } |
---|
| 254 | |
---|
| 255 | string_list |
---|
| 256 | sbuild::split_string (std::string const& value, |
---|
| 257 | std::string const& separator) |
---|
| 258 | { |
---|
| 259 | string_list ret; |
---|
| 260 | |
---|
| 261 | // Skip any separators at the start |
---|
| 262 | std::string::size_type last_pos = |
---|
| 263 | value.find_first_not_of(separator, 0); |
---|
| 264 | // Find first separator. |
---|
| 265 | std::string::size_type pos = value.find_first_of(separator, last_pos); |
---|
| 266 | |
---|
| 267 | while (pos !=std::string::npos || last_pos != std::string::npos) |
---|
| 268 | { |
---|
| 269 | // Add to list |
---|
| 270 | if (pos == std::string::npos) |
---|
| 271 | // Entire string from last_pos |
---|
| 272 | ret.push_back(value.substr(last_pos, pos)); |
---|
| 273 | else |
---|
| 274 | // Between pos and last_pos |
---|
| 275 | ret.push_back(value.substr(last_pos, pos - last_pos)); |
---|
| 276 | |
---|
| 277 | // Find next |
---|
| 278 | last_pos = value.find_first_not_of(separator, pos); |
---|
| 279 | pos = value.find_first_of(separator, last_pos); |
---|
| 280 | } |
---|
| 281 | |
---|
| 282 | return ret; |
---|
| 283 | } |
---|
| 284 | |
---|
| 285 | string_list |
---|
| 286 | sbuild::split_string_strict (std::string const& value, |
---|
| 287 | std::string const& separator) |
---|
| 288 | { |
---|
| 289 | string_list ret; |
---|
| 290 | |
---|
| 291 | std::string::size_type last_pos = 0; |
---|
| 292 | // Find first separator. |
---|
| 293 | std::string::size_type pos = value.find_first_of(separator, last_pos); |
---|
| 294 | |
---|
| 295 | while (pos !=std::string::npos) |
---|
| 296 | { |
---|
| 297 | // Add to list |
---|
| 298 | if (pos == std::string::npos) |
---|
| 299 | // Entire string from last_pos |
---|
| 300 | ret.push_back(value.substr(last_pos, pos)); |
---|
| 301 | else |
---|
| 302 | // Between pos and last_pos |
---|
| 303 | ret.push_back(value.substr(last_pos, pos - last_pos)); |
---|
| 304 | |
---|
| 305 | // Find next |
---|
| 306 | last_pos = pos + separator.length(); |
---|
| 307 | pos = value.find_first_of(separator, last_pos); |
---|
| 308 | } |
---|
| 309 | |
---|
| 310 | return ret; |
---|
| 311 | } |
---|
| 312 | |
---|
| 313 | std::wstring |
---|
| 314 | sbuild::widen_string (std::string const& str, |
---|
| 315 | std::locale locale) |
---|
| 316 | { |
---|
| 317 | typedef std::codecvt<wchar_t, char, mbstate_t> codecvt_type; |
---|
| 318 | codecvt_type const& cvt = std::use_facet<codecvt_type>(locale); |
---|
| 319 | mbstate_t state; |
---|
| 320 | const char *cbegin = str.data(), *cend = str.data() + str.size(), *cnext; |
---|
| 321 | wchar_t *wcnext; |
---|
| 322 | wchar_t wcbuf[80]; |
---|
| 323 | std::wstring ret; |
---|
| 324 | |
---|
| 325 | std::memset(&state, 0, sizeof(mbstate_t)); |
---|
| 326 | |
---|
| 327 | while (1) |
---|
| 328 | { |
---|
| 329 | std::codecvt_base::result res = |
---|
| 330 | cvt.in(state, |
---|
| 331 | cbegin, cend, cnext, |
---|
| 332 | wcbuf, wcbuf + (sizeof(wcbuf) / sizeof(wcbuf[0])), wcnext); |
---|
| 333 | |
---|
| 334 | if (res == std::codecvt_base::ok || res == std::codecvt_base::partial) |
---|
| 335 | { |
---|
| 336 | ret += std::wstring(wcbuf, wcnext); |
---|
| 337 | if (cend == cnext) |
---|
| 338 | break; |
---|
| 339 | } |
---|
| 340 | else if (res == std::codecvt_base::noconv) |
---|
| 341 | { |
---|
| 342 | ret += std::wstring(cbegin, cend); |
---|
| 343 | break; |
---|
| 344 | } |
---|
| 345 | else if (res == std::codecvt_base::error) |
---|
| 346 | { |
---|
| 347 | throw std::runtime_error |
---|
| 348 | ("A character set conversion failed. Please report this bug."); |
---|
| 349 | break; |
---|
| 350 | } |
---|
| 351 | else |
---|
| 352 | break; |
---|
| 353 | |
---|
| 354 | cbegin = cnext; |
---|
| 355 | } |
---|
| 356 | |
---|
| 357 | return ret; |
---|
| 358 | } |
---|
| 359 | |
---|
| 360 | std::string |
---|
| 361 | sbuild::narrow_string (std::wstring const& str, |
---|
| 362 | std::locale locale) |
---|
| 363 | { |
---|
| 364 | typedef std::codecvt<wchar_t, char, mbstate_t> codecvt_type; |
---|
| 365 | codecvt_type const& cvt = std::use_facet<codecvt_type>(locale); |
---|
| 366 | mbstate_t state; |
---|
| 367 | const wchar_t *wcbegin = str.data(), *wcend = str.data() + str.size(), *wcnext; |
---|
| 368 | char *cnext; |
---|
| 369 | char cbuf[80]; |
---|
| 370 | std::string ret; |
---|
| 371 | |
---|
| 372 | std::memset(&state, 0, sizeof(mbstate_t)); |
---|
| 373 | |
---|
| 374 | while (1) |
---|
| 375 | { |
---|
| 376 | std::codecvt_base::result res = |
---|
| 377 | cvt.out(state, |
---|
| 378 | wcbegin, wcend, wcnext, |
---|
| 379 | cbuf, cbuf + (sizeof(cbuf) / sizeof(cbuf[0])), cnext); |
---|
| 380 | |
---|
| 381 | if (res == std::codecvt_base::ok || res == std::codecvt_base::partial) |
---|
| 382 | { |
---|
| 383 | ret += std::string(cbuf, cnext); |
---|
| 384 | if (wcend == wcnext) |
---|
| 385 | break; |
---|
| 386 | } |
---|
| 387 | else if (res == std::codecvt_base::noconv) |
---|
| 388 | { |
---|
| 389 | ret += std::string(wcbegin, wcend); |
---|
| 390 | break; |
---|
| 391 | } |
---|
| 392 | else if (res == std::codecvt_base::error) |
---|
| 393 | { |
---|
| 394 | throw std::runtime_error |
---|
| 395 | ("A character set conversion failed. Please report this bug."); |
---|
| 396 | break; |
---|
| 397 | } |
---|
| 398 | else |
---|
| 399 | break; |
---|
| 400 | |
---|
| 401 | wcbegin = wcnext; |
---|
| 402 | } |
---|
| 403 | |
---|
| 404 | return ret; |
---|
| 405 | } |
---|
| 406 | |
---|
| 407 | std::string |
---|
| 408 | sbuild::find_program_in_path (std::string const& program, |
---|
| 409 | std::string const& path, |
---|
| 410 | std::string const& prefix) |
---|
| 411 | { |
---|
| 412 | if (program.find_first_of('/') != std::string::npos) |
---|
| 413 | return program; |
---|
| 414 | |
---|
| 415 | string_list dirs = split_string(path, std::string(1, ':')); |
---|
| 416 | |
---|
| 417 | for (string_list::const_iterator dir = dirs.begin(); |
---|
| 418 | dir != dirs.end(); |
---|
| 419 | ++dir) |
---|
| 420 | { |
---|
| 421 | std::string realname = *dir + '/' + program; |
---|
| 422 | std::string absname; |
---|
| 423 | if (prefix.length() > 0) |
---|
| 424 | { |
---|
| 425 | absname = prefix; |
---|
| 426 | if (dir->length() > 0 && (*dir)[0] != '/') |
---|
| 427 | absname += '/'; |
---|
| 428 | } |
---|
| 429 | absname += realname; |
---|
| 430 | |
---|
| 431 | try |
---|
| 432 | { |
---|
| 433 | if (stat(absname).is_regular() && |
---|
| 434 | access (absname.c_str(), X_OK) == 0) |
---|
| 435 | return realname; |
---|
| 436 | } |
---|
| 437 | catch (std::runtime_error const& e) |
---|
| 438 | { |
---|
| 439 | } |
---|
| 440 | } |
---|
| 441 | |
---|
| 442 | return ""; |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | char ** |
---|
| 446 | sbuild::string_list_to_strv (string_list const& str) |
---|
| 447 | { |
---|
| 448 | char **ret = new char *[str.size() + 1]; |
---|
| 449 | |
---|
| 450 | for (string_list::size_type i = 0; |
---|
| 451 | i < str.size(); |
---|
| 452 | ++i) |
---|
| 453 | { |
---|
| 454 | ret[i] = new char[str[i].length() + 1]; |
---|
| 455 | std::strcpy(ret[i], str[i].c_str()); |
---|
| 456 | } |
---|
| 457 | ret[str.size()] = 0; |
---|
| 458 | |
---|
| 459 | return ret; |
---|
| 460 | } |
---|
| 461 | |
---|
| 462 | |
---|
| 463 | void |
---|
| 464 | sbuild::strv_delete (char **strv) |
---|
| 465 | { |
---|
| 466 | for (char **pos = strv; pos != 0 && *pos != 0; ++pos) |
---|
| 467 | delete *pos; |
---|
| 468 | delete[] strv; |
---|
| 469 | } |
---|
| 470 | |
---|
| 471 | int |
---|
| 472 | sbuild::exec (std::string const& file, |
---|
| 473 | string_list const& command, |
---|
| 474 | environment const& env) |
---|
| 475 | { |
---|
| 476 | char **argv = string_list_to_strv(command); |
---|
| 477 | char **envp = env.get_strv(); |
---|
| 478 | int status; |
---|
| 479 | |
---|
| 480 | if ((status = execve(file.c_str(), argv, envp)) != 0) |
---|
| 481 | { |
---|
| 482 | strv_delete(argv); |
---|
| 483 | strv_delete(envp); |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | return status; |
---|
| 487 | } |
---|
| 488 | |
---|
| 489 | sbuild::stat::stat (const char *file): |
---|
| 490 | file(file), |
---|
| 491 | fd(0), |
---|
| 492 | errorno(0), |
---|
| 493 | status() |
---|
| 494 | { |
---|
| 495 | if (::stat(file, &this->status) < 0) |
---|
| 496 | this->errorno = errno; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | sbuild::stat::stat (std::string const& file): |
---|
| 500 | file(file), |
---|
| 501 | fd(0), |
---|
| 502 | errorno(0), |
---|
| 503 | status() |
---|
| 504 | { |
---|
| 505 | if (::stat(file.c_str(), &this->status) < 0) |
---|
| 506 | this->errorno = errno; |
---|
| 507 | } |
---|
| 508 | |
---|
| 509 | sbuild::stat::stat (std::string const& file, |
---|
| 510 | int fd): |
---|
| 511 | file(file), |
---|
| 512 | fd(fd), |
---|
| 513 | errorno(0), |
---|
| 514 | status() |
---|
| 515 | { |
---|
| 516 | if (::fstat(fd, &this->status) < 0) |
---|
| 517 | this->errorno = errno; |
---|
| 518 | } |
---|
| 519 | |
---|
| 520 | sbuild::stat::stat (int fd): |
---|
| 521 | file(), |
---|
| 522 | fd(fd), |
---|
| 523 | errorno(0), |
---|
| 524 | status() |
---|
| 525 | { |
---|
| 526 | if (::fstat(fd, &this->status) < 0) |
---|
| 527 | this->errorno = errno; |
---|
| 528 | } |
---|
| 529 | |
---|
| 530 | sbuild::stat::~stat () |
---|
| 531 | { |
---|
| 532 | } |
---|
| 533 | |
---|
| 534 | sbuild::passwd::passwd (): |
---|
| 535 | ::passwd(), |
---|
| 536 | buffer(), |
---|
| 537 | valid(false) |
---|
| 538 | { |
---|
| 539 | clear(); |
---|
| 540 | } |
---|
| 541 | |
---|
| 542 | sbuild::passwd::passwd (uid_t uid): |
---|
| 543 | ::passwd(), |
---|
| 544 | buffer(), |
---|
| 545 | valid(false) |
---|
| 546 | { |
---|
| 547 | clear(); |
---|
| 548 | |
---|
| 549 | query_uid(uid); |
---|
| 550 | } |
---|
| 551 | |
---|
| 552 | sbuild::passwd::passwd (const char *name): |
---|
| 553 | ::passwd(), |
---|
| 554 | buffer(), |
---|
| 555 | valid(false) |
---|
| 556 | { |
---|
| 557 | clear(); |
---|
| 558 | |
---|
| 559 | query_name(name); |
---|
| 560 | } |
---|
| 561 | |
---|
| 562 | sbuild::passwd::passwd (std::string const& name): |
---|
| 563 | ::passwd(), |
---|
| 564 | buffer(), |
---|
| 565 | valid(false) |
---|
| 566 | { |
---|
| 567 | clear(); |
---|
| 568 | |
---|
| 569 | query_name(name); |
---|
| 570 | } |
---|
| 571 | |
---|
| 572 | void |
---|
| 573 | sbuild::passwd::clear () |
---|
| 574 | { |
---|
| 575 | valid = false; |
---|
| 576 | |
---|
| 577 | buffer.clear(); |
---|
| 578 | |
---|
| 579 | ::passwd::pw_name = 0; |
---|
| 580 | ::passwd::pw_passwd = 0; |
---|
| 581 | ::passwd::pw_uid = 0; |
---|
| 582 | ::passwd::pw_gid = 0; |
---|
| 583 | ::passwd::pw_gecos = 0; |
---|
| 584 | ::passwd::pw_dir = 0; |
---|
| 585 | ::passwd::pw_shell = 0; |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | void |
---|
| 589 | sbuild::passwd::query_uid (uid_t uid) |
---|
| 590 | { |
---|
| 591 | buffer_type::size_type size = 1 << 7; |
---|
| 592 | buffer.reserve(size); |
---|
| 593 | int error; |
---|
| 594 | |
---|
| 595 | ::passwd *pwd_result; |
---|
| 596 | |
---|
| 597 | while ((error = getpwuid_r(uid, this, |
---|
| 598 | &buffer[0], buffer.capacity(), |
---|
| 599 | &pwd_result))) |
---|
| 600 | { |
---|
| 601 | size <<= 1; |
---|
| 602 | buffer.reserve(size); |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | if (pwd_result) |
---|
| 606 | valid = true; |
---|
| 607 | else |
---|
| 608 | errno = error; |
---|
| 609 | } |
---|
| 610 | |
---|
| 611 | void |
---|
| 612 | sbuild::passwd::query_name (const char *name) |
---|
| 613 | { |
---|
| 614 | buffer_type::size_type size = 1 << 8; |
---|
| 615 | buffer.reserve(size); |
---|
| 616 | int error; |
---|
| 617 | |
---|
| 618 | ::passwd *pwd_result; |
---|
| 619 | |
---|
| 620 | while ((error = getpwnam_r(name, this, |
---|
| 621 | &buffer[0], buffer.capacity(), |
---|
| 622 | &pwd_result))) |
---|
| 623 | { |
---|
| 624 | size <<= 1; |
---|
| 625 | buffer.reserve(size); |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | if (pwd_result) |
---|
| 629 | valid = true; |
---|
| 630 | else |
---|
| 631 | errno = error; |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | void |
---|
| 635 | sbuild::passwd::query_name (std::string const& name) |
---|
| 636 | { |
---|
| 637 | query_name(name.c_str()); |
---|
| 638 | } |
---|
| 639 | |
---|
| 640 | bool |
---|
| 641 | sbuild::passwd::operator ! () const |
---|
| 642 | { |
---|
| 643 | return !valid; |
---|
| 644 | } |
---|
| 645 | |
---|
| 646 | sbuild::group::group (): |
---|
| 647 | ::group(), |
---|
| 648 | buffer(), |
---|
| 649 | valid(false) |
---|
| 650 | { |
---|
| 651 | clear(); |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | sbuild::group::group (gid_t gid): |
---|
| 655 | ::group(), |
---|
| 656 | buffer(), |
---|
| 657 | valid(false) |
---|
| 658 | { |
---|
| 659 | clear(); |
---|
| 660 | |
---|
| 661 | query_gid(gid); |
---|
| 662 | } |
---|
| 663 | |
---|
| 664 | sbuild::group::group (const char *name): |
---|
| 665 | ::group(), |
---|
| 666 | buffer(), |
---|
| 667 | valid(false) |
---|
| 668 | { |
---|
| 669 | clear(); |
---|
| 670 | |
---|
| 671 | query_name(name); |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | sbuild::group::group (std::string const& name): |
---|
| 675 | ::group(), |
---|
| 676 | buffer(), |
---|
| 677 | valid(false) |
---|
| 678 | { |
---|
| 679 | clear(); |
---|
| 680 | |
---|
| 681 | query_name(name); |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | void |
---|
| 685 | sbuild::group::clear () |
---|
| 686 | { |
---|
| 687 | valid = false; |
---|
| 688 | |
---|
| 689 | buffer.clear(); |
---|
| 690 | |
---|
| 691 | ::group::gr_name = 0; |
---|
| 692 | ::group::gr_passwd = 0; |
---|
| 693 | ::group::gr_gid = 0; |
---|
| 694 | ::group::gr_mem = 0; |
---|
| 695 | } |
---|
| 696 | |
---|
| 697 | void |
---|
| 698 | sbuild::group::query_gid (gid_t gid) |
---|
| 699 | { |
---|
| 700 | buffer_type::size_type size = 1 << 7; |
---|
| 701 | buffer.reserve(size); |
---|
| 702 | int error; |
---|
| 703 | |
---|
| 704 | ::group *grp_result; |
---|
| 705 | |
---|
| 706 | while ((error = getgrgid_r(gid, this, |
---|
| 707 | &buffer[0], buffer.capacity(), |
---|
| 708 | &grp_result))) |
---|
| 709 | { |
---|
| 710 | size <<= 1; |
---|
| 711 | buffer.reserve(size); |
---|
| 712 | } |
---|
| 713 | |
---|
| 714 | if (grp_result) |
---|
| 715 | valid = true; |
---|
| 716 | else |
---|
| 717 | errno = error; |
---|
| 718 | } |
---|
| 719 | |
---|
| 720 | void |
---|
| 721 | sbuild::group::query_name (const char *name) |
---|
| 722 | { |
---|
| 723 | buffer_type::size_type size = 1 << 8; |
---|
| 724 | buffer.reserve(size); |
---|
| 725 | int error; |
---|
| 726 | |
---|
| 727 | ::group *grp_result; |
---|
| 728 | |
---|
| 729 | while ((error = getgrnam_r(name, this, |
---|
| 730 | &buffer[0], buffer.capacity(), |
---|
| 731 | &grp_result))) |
---|
| 732 | { |
---|
| 733 | size <<= 1; |
---|
| 734 | buffer.reserve(size); |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | if (grp_result) |
---|
| 738 | valid = true; |
---|
| 739 | else |
---|
| 740 | errno = error; |
---|
| 741 | } |
---|
| 742 | |
---|
| 743 | void |
---|
| 744 | sbuild::group::query_name (std::string const& name) |
---|
| 745 | { |
---|
| 746 | query_name(name.c_str()); |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | bool |
---|
| 750 | sbuild::group::operator ! () const |
---|
| 751 | { |
---|
| 752 | return !valid; |
---|
| 753 | } |
---|