1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ 2 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-BUS implementation) 3 * 4 * Copyright (C) 2002, 2003 Red Hat, Inc. 5 * Copyright (C) 2003 CodeFactory AB 6 * Copyright (C) 2005 Novell, Inc. 7 * Copyright (C) 2006 Ralf Habacker <ralf.habacker (at) freenet.de> 8 * Copyright (C) 2006 Peter Kmmel <syntheticpp (at) gmx.net> 9 * Copyright (C) 2006 Christian Ehrlicher <ch.ehrlicher (at) gmx.de> 10 * 11 * Licensed under the Academic Free License version 2.1 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 26 * 27 */ 28 29 #include <config.h> 30 31 #define STRSAFE_NO_DEPRECATE 32 33 #ifndef DBUS_WINCE 34 #ifndef _WIN32_WINNT 35 #define _WIN32_WINNT 0x0501 36 #endif 37 #endif 38 39 #include "dbus-internals.h" 40 #include "dbus-sysdeps.h" 41 #include "dbus-threads.h" 42 #include "dbus-protocol.h" 43 #include "dbus-string.h" 44 #include "dbus-sysdeps-win.h" 45 #include "dbus-protocol.h" 46 #include "dbus-hash.h" 47 #include "dbus-sockets-win.h" 48 #include "dbus-list.h" 49 #include "dbus-nonce.h" 50 #include "dbus-credentials.h" 51 52 #include <windows.h> 53 #include <ws2tcpip.h> 54 #include <wincrypt.h> 55 56 /* Declarations missing in mingw's headers */ 57 extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid); 58 extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid); 59 60 #include <stdio.h> 61 62 #include <string.h> 63 #if HAVE_ERRNO_H 64 #include <errno.h> 65 #endif 66 #ifndef DBUS_WINCE 67 #include <mbstring.h> 68 #include <sys/stat.h> 69 #include <sys/types.h> 70 #endif 71 72 #ifdef HAVE_WS2TCPIP_H 73 /* getaddrinfo for Windows CE (and Windows). */ 74 #include <ws2tcpip.h> 75 #endif 76 77 #ifdef HAVE_WSPIAPI_H 78 // needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo) 79 #ifdef __GNUC__ 80 #define _inline 81 #include "wspiapi.h" 82 #else 83 #include <wspiapi.h> 84 #endif 85 #endif // HAVE_WSPIAPI_H 86 87 #ifndef O_BINARY 88 #define O_BINARY 0 89 #endif 90 91 typedef int socklen_t; 92 93 94 void 95 _dbus_win_set_errno (int err) 96 { 97 #ifdef DBUS_WINCE 98 SetLastError (err); 99 #else 100 errno = err; 101 #endif 102 } 103 104 105 /* Convert GetLastError() to a dbus error. */ 106 const char* 107 _dbus_win_error_from_last_error (void) 108 { 109 switch (GetLastError()) 110 { 111 case 0: 112 return DBUS_ERROR_FAILED; 113 114 case ERROR_NO_MORE_FILES: 115 case ERROR_TOO_MANY_OPEN_FILES: 116 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */ 117 118 case ERROR_ACCESS_DENIED: 119 case ERROR_CANNOT_MAKE: 120 return DBUS_ERROR_ACCESS_DENIED; 121 122 case ERROR_NOT_ENOUGH_MEMORY: 123 return DBUS_ERROR_NO_MEMORY; 124 125 case ERROR_FILE_EXISTS: 126 return DBUS_ERROR_FILE_EXISTS; 127 128 case ERROR_FILE_NOT_FOUND: 129 case ERROR_PATH_NOT_FOUND: 130 return DBUS_ERROR_FILE_NOT_FOUND; 131 } 132 133 return DBUS_ERROR_FAILED; 134 } 135 136 137 char* 138 _dbus_win_error_string (int error_number) 139 { 140 char *msg; 141 142 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER | 143 FORMAT_MESSAGE_IGNORE_INSERTS | 144 FORMAT_MESSAGE_FROM_SYSTEM, 145 NULL, error_number, 0, 146 (LPSTR) &msg, 0, NULL); 147 148 if (msg[strlen (msg) - 1] == '\n') 149 msg[strlen (msg) - 1] = '\0'; 150 if (msg[strlen (msg) - 1] == '\r') 151 msg[strlen (msg) - 1] = '\0'; 152 153 return msg; 154 } 155 156 void 157 _dbus_win_free_error_string (char *string) 158 { 159 LocalFree (string); 160 } 161 162 /** 163 * Socket interface 164 * 165 */ 166 167 /** 168 * Thin wrapper around the read() system call that appends 169 * the data it reads to the DBusString buffer. It appends 170 * up to the given count, and returns the same value 171 * and same errno as read(). The only exception is that 172 * _dbus_read_socket() handles EINTR for you. 173 * _dbus_read_socket() can return ENOMEM, even though 174 * regular UNIX read doesn't. 175 * 176 * @param fd the file descriptor to read from 177 * @param buffer the buffer to append data to 178 * @param count the amount of data to read 179 * @returns the number of bytes read or -1 180 */ 181 182 int 183 _dbus_read_socket (int fd, 184 DBusString *buffer, 185 int count) 186 { 187 int bytes_read; 188 int start; 189 char *data; 190 191 _dbus_assert (count >= 0); 192 193 start = _dbus_string_get_length (buffer); 194 195 if (!_dbus_string_lengthen (buffer, count)) 196 { 197 _dbus_win_set_errno (ENOMEM); 198 return -1; 199 } 200 201 data = _dbus_string_get_data_len (buffer, start, count); 202 203 again: 204 205 _dbus_verbose ("recv: count=%d fd=%d\n", count, fd); 206 bytes_read = recv (fd, data, count, 0); 207 208 if (bytes_read == SOCKET_ERROR) 209 { 210 DBUS_SOCKET_SET_ERRNO(); 211 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno); 212 bytes_read = -1; 213 } 214 else 215 _dbus_verbose ("recv: = %d\n", bytes_read); 216 217 if (bytes_read < 0) 218 { 219 if (errno == EINTR) 220 goto again; 221 else 222 { 223 /* put length back (note that this doesn't actually realloc anything) */ 224 _dbus_string_set_length (buffer, start); 225 return -1; 226 } 227 } 228 else 229 { 230 /* put length back (doesn't actually realloc) */ 231 _dbus_string_set_length (buffer, start + bytes_read); 232 233 #if 0 234 if (bytes_read > 0) 235 _dbus_verbose_bytes_of_string (buffer, start, bytes_read); 236 #endif 237 238 return bytes_read; 239 } 240 } 241 242 /** 243 * Thin wrapper around the write() system call that writes a part of a 244 * DBusString and handles EINTR for you. 245 * 246 * @param fd the file descriptor to write 247 * @param buffer the buffer to write data from 248 * @param start the first byte in the buffer to write 249 * @param len the number of bytes to try to write 250 * @returns the number of bytes written or -1 on error 251 */ 252 int 253 _dbus_write_socket (int fd, 254 const DBusString *buffer, 255 int start, 256 int len) 257 { 258 const char *data; 259 int bytes_written; 260 261 data = _dbus_string_get_const_data_len (buffer, start, len); 262 263 again: 264 265 _dbus_verbose ("send: len=%d fd=%d\n", len, fd); 266 bytes_written = send (fd, data, len, 0); 267 268 if (bytes_written == SOCKET_ERROR) 269 { 270 DBUS_SOCKET_SET_ERRNO(); 271 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ()); 272 bytes_written = -1; 273 } 274 else 275 _dbus_verbose ("send: = %d\n", bytes_written); 276 277 if (bytes_written < 0 && errno == EINTR) 278 goto again; 279 280 #if 0 281 if (bytes_written > 0) 282 _dbus_verbose_bytes_of_string (buffer, start, bytes_written); 283 #endif 284 285 return bytes_written; 286 } 287 288 289 /** 290 * Closes a file descriptor. 291 * 292 * @param fd the file descriptor 293 * @param error error object 294 * @returns #FALSE if error set 295 */ 296 dbus_bool_t 297 _dbus_close_socket (int fd, 298 DBusError *error) 299 { 300 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 301 302 again: 303 if (closesocket (fd) == SOCKET_ERROR) 304 { 305 DBUS_SOCKET_SET_ERRNO (); 306 307 if (errno == EINTR) 308 goto again; 309 310 dbus_set_error (error, _dbus_error_from_errno (errno), 311 "Could not close socket: socket=%d, , %s", 312 fd, _dbus_strerror_from_errno ()); 313 return FALSE; 314 } 315 _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd); 316 317 return TRUE; 318 } 319 320 /** 321 * Sets the file descriptor to be close 322 * on exec. Should be called for all file 323 * descriptors in D-Bus code. 324 * 325 * @param fd the file descriptor 326 */ 327 void 328 _dbus_fd_set_close_on_exec (intptr_t handle) 329 { 330 if ( !SetHandleInformation( (HANDLE) handle, 331 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE, 332 0 /*disable both flags*/ ) ) 333 { 334 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError()); 335 } 336 } 337 338 /** 339 * Sets a file descriptor to be nonblocking. 340 * 341 * @param fd the file descriptor. 342 * @param error address of error location. 343 * @returns #TRUE on success. 344 */ 345 dbus_bool_t 346 _dbus_set_fd_nonblocking (int handle, 347 DBusError *error) 348 { 349 u_long one = 1; 350 351 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 352 353 if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR) 354 { 355 DBUS_SOCKET_SET_ERRNO (); 356 dbus_set_error (error, _dbus_error_from_errno (errno), 357 "Failed to set socket %d:%d to nonblocking: %s", handle, 358 _dbus_strerror_from_errno ()); 359 return FALSE; 360 } 361 362 return TRUE; 363 } 364 365 366 /** 367 * Like _dbus_write() but will use writev() if possible 368 * to write both buffers in sequence. The return value 369 * is the number of bytes written in the first buffer, 370 * plus the number written in the second. If the first 371 * buffer is written successfully and an error occurs 372 * writing the second, the number of bytes in the first 373 * is returned (i.e. the error is ignored), on systems that 374 * don't have writev. Handles EINTR for you. 375 * The second buffer may be #NULL. 376 * 377 * @param fd the file descriptor 378 * @param buffer1 first buffer 379 * @param start1 first byte to write in first buffer 380 * @param len1 number of bytes to write from first buffer 381 * @param buffer2 second buffer, or #NULL 382 * @param start2 first byte to write in second buffer 383 * @param len2 number of bytes to write in second buffer 384 * @returns total bytes written from both buffers, or -1 on error 385 */ 386 int 387 _dbus_write_socket_two (int fd, 388 const DBusString *buffer1, 389 int start1, 390 int len1, 391 const DBusString *buffer2, 392 int start2, 393 int len2) 394 { 395 WSABUF vectors[2]; 396 const char *data1; 397 const char *data2; 398 int rc; 399 DWORD bytes_written; 400 401 _dbus_assert (buffer1 != NULL); 402 _dbus_assert (start1 >= 0); 403 _dbus_assert (start2 >= 0); 404 _dbus_assert (len1 >= 0); 405 _dbus_assert (len2 >= 0); 406 407 408 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1); 409 410 if (buffer2 != NULL) 411 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2); 412 else 413 { 414 data2 = NULL; 415 start2 = 0; 416 len2 = 0; 417 } 418 419 vectors[0].buf = (char*) data1; 420 vectors[0].len = len1; 421 vectors[1].buf = (char*) data2; 422 vectors[1].len = len2; 423 424 again: 425 426 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd); 427 rc = WSASend (fd, 428 vectors, 429 data2 ? 2 : 1, 430 &bytes_written, 431 0, 432 NULL, 433 NULL); 434 435 if (rc == SOCKET_ERROR) 436 { 437 DBUS_SOCKET_SET_ERRNO (); 438 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ()); 439 bytes_written = -1; 440 } 441 else 442 _dbus_verbose ("WSASend: = %ld\n", bytes_written); 443 444 if (bytes_written < 0 && errno == EINTR) 445 goto again; 446 447 return bytes_written; 448 } 449 450 dbus_bool_t 451 _dbus_socket_is_invalid (int fd) 452 { 453 return fd == INVALID_SOCKET ? TRUE : FALSE; 454 } 455 456 #if 0 457 458 /** 459 * Opens the client side of a Windows named pipe. The connection D-BUS 460 * file descriptor index is returned. It is set up as nonblocking. 461 * 462 * @param path the path to named pipe socket 463 * @param error return location for error code 464 * @returns connection D-BUS file descriptor or -1 on error 465 */ 466 int 467 _dbus_connect_named_pipe (const char *path, 468 DBusError *error) 469 { 470 _dbus_assert_not_reached ("not implemented"); 471 } 472 473 #endif 474 475 476 477 void 478 _dbus_win_startup_winsock (void) 479 { 480 /* Straight from MSDN, deuglified */ 481 482 static dbus_bool_t beenhere = FALSE; 483 484 WORD wVersionRequested; 485 WSADATA wsaData; 486 int err; 487 488 if (beenhere) 489 return; 490 491 wVersionRequested = MAKEWORD (2, 0); 492 493 err = WSAStartup (wVersionRequested, &wsaData); 494 if (err != 0) 495 { 496 _dbus_assert_not_reached ("Could not initialize WinSock"); 497 _dbus_abort (); 498 } 499 500 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL 501 * supports versions greater than 2.0 in addition to 2.0, it will 502 * still return 2.0 in wVersion since that is the version we 503 * requested. 504 */ 505 if (LOBYTE (wsaData.wVersion) != 2 || 506 HIBYTE (wsaData.wVersion) != 0) 507 { 508 _dbus_assert_not_reached ("No usable WinSock found"); 509 _dbus_abort (); 510 } 511 512 beenhere = TRUE; 513 } 514 515 516 517 518 519 520 521 522 523 /************************************************************************ 524 525 UTF / string code 526 527 ************************************************************************/ 528 529 /** 530 * Measure the message length without terminating nul 531 */ 532 int _dbus_printf_string_upper_bound (const char *format, 533 va_list args) 534 { 535 /* MSVCRT's vsnprintf semantics are a bit different */ 536 char buf[1024]; 537 int bufsize; 538 int len; 539 540 bufsize = sizeof (buf); 541 len = _vsnprintf (buf, bufsize - 1, format, args); 542 543 while (len == -1) /* try again */ 544 { 545 char *p; 546 547 bufsize *= 2; 548 549 p = malloc (bufsize); 550 len = _vsnprintf (p, bufsize - 1, format, args); 551 free (p); 552 } 553 554 return len; 555 } 556 557 558 /** 559 * Returns the UTF-16 form of a UTF-8 string. The result should be 560 * freed with dbus_free() when no longer needed. 561 * 562 * @param str the UTF-8 string 563 * @param error return location for error code 564 */ 565 wchar_t * 566 _dbus_win_utf8_to_utf16 (const char *str, 567 DBusError *error) 568 { 569 DBusString s; 570 int n; 571 wchar_t *retval; 572 573 _dbus_string_init_const (&s, str); 574 575 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s))) 576 { 577 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8"); 578 return NULL; 579 } 580 581 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0); 582 583 if (n == 0) 584 { 585 _dbus_win_set_error_from_win_error (error, GetLastError ()); 586 return NULL; 587 } 588 589 retval = dbus_new (wchar_t, n); 590 591 if (!retval) 592 { 593 _DBUS_SET_OOM (error); 594 return NULL; 595 } 596 597 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n) 598 { 599 dbus_free (retval); 600 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency"); 601 return NULL; 602 } 603 604 return retval; 605 } 606 607 /** 608 * Returns the UTF-8 form of a UTF-16 string. The result should be 609 * freed with dbus_free() when no longer needed. 610 * 611 * @param str the UTF-16 string 612 * @param error return location for error code 613 */ 614 char * 615 _dbus_win_utf16_to_utf8 (const wchar_t *str, 616 DBusError *error) 617 { 618 int n; 619 char *retval; 620 621 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL); 622 623 if (n == 0) 624 { 625 _dbus_win_set_error_from_win_error (error, GetLastError ()); 626 return NULL; 627 } 628 629 retval = dbus_malloc (n); 630 631 if (!retval) 632 { 633 _DBUS_SET_OOM (error); 634 return NULL; 635 } 636 637 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n) 638 { 639 dbus_free (retval); 640 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency"); 641 return NULL; 642 } 643 644 return retval; 645 } 646 647 648 649 650 651 652 /************************************************************************ 653 654 655 ************************************************************************/ 656 657 dbus_bool_t 658 _dbus_win_account_to_sid (const wchar_t *waccount, 659 void **ppsid, 660 DBusError *error) 661 { 662 dbus_bool_t retval = FALSE; 663 DWORD sid_length, wdomain_length; 664 SID_NAME_USE use; 665 wchar_t *wdomain; 666 667 *ppsid = NULL; 668 669 sid_length = 0; 670 wdomain_length = 0; 671 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length, 672 NULL, &wdomain_length, &use) && 673 GetLastError () != ERROR_INSUFFICIENT_BUFFER) 674 { 675 _dbus_win_set_error_from_win_error (error, GetLastError ()); 676 return FALSE; 677 } 678 679 *ppsid = dbus_malloc (sid_length); 680 if (!*ppsid) 681 { 682 _DBUS_SET_OOM (error); 683 return FALSE; 684 } 685 686 wdomain = dbus_new (wchar_t, wdomain_length); 687 if (!wdomain) 688 { 689 _DBUS_SET_OOM (error); 690 goto out1; 691 } 692 693 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length, 694 wdomain, &wdomain_length, &use)) 695 { 696 _dbus_win_set_error_from_win_error (error, GetLastError ()); 697 goto out2; 698 } 699 700 if (!IsValidSid ((PSID) *ppsid)) 701 { 702 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID"); 703 goto out2; 704 } 705 706 retval = TRUE; 707 708 out2: 709 dbus_free (wdomain); 710 out1: 711 if (!retval) 712 { 713 dbus_free (*ppsid); 714 *ppsid = NULL; 715 } 716 717 return retval; 718 } 719 720 /** @} end of sysdeps-win */ 721 722 723 /** 724 * The only reason this is separate from _dbus_getpid() is to allow it 725 * on Windows for logging but not for other purposes. 726 * 727 * @returns process ID to put in log messages 728 */ 729 unsigned long 730 _dbus_pid_for_log (void) 731 { 732 return _dbus_getpid (); 733 } 734 735 736 #ifndef DBUS_WINCE 737 /** Gets our SID 738 * @param points to sid buffer, need to be freed with LocalFree() 739 * @returns process sid 740 */ 741 static dbus_bool_t 742 _dbus_getsid(char **sid) 743 { 744 HANDLE process_token = INVALID_HANDLE_VALUE; 745 TOKEN_USER *token_user = NULL; 746 DWORD n; 747 PSID psid; 748 int retval = FALSE; 749 750 if (!OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &process_token)) 751 { 752 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ()); 753 goto failed; 754 } 755 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n) 756 && GetLastError () != ERROR_INSUFFICIENT_BUFFER) 757 || (token_user = alloca (n)) == NULL 758 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n)) 759 { 760 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ()); 761 goto failed; 762 } 763 psid = token_user->User.Sid; 764 if (!IsValidSid (psid)) 765 { 766 _dbus_verbose("%s invalid sid\n",__FUNCTION__); 767 goto failed; 768 } 769 if (!ConvertSidToStringSidA (psid, sid)) 770 { 771 _dbus_verbose("%s invalid sid\n",__FUNCTION__); 772 goto failed; 773 } 774 //okay: 775 retval = TRUE; 776 777 failed: 778 if (process_token != INVALID_HANDLE_VALUE) 779 CloseHandle (process_token); 780 781 _dbus_verbose("_dbus_getsid() returns %d\n",retval); 782 return retval; 783 } 784 #endif 785 786 /************************************************************************ 787 788 pipes 789 790 ************************************************************************/ 791 792 /** 793 * Creates a full-duplex pipe (as in socketpair()). 794 * Sets both ends of the pipe nonblocking. 795 * 796 * @todo libdbus only uses this for the debug-pipe server, so in 797 * principle it could be in dbus-sysdeps-util.c, except that 798 * dbus-sysdeps-util.c isn't in libdbus when tests are enabled and the 799 * debug-pipe server is used. 800 * 801 * @param fd1 return location for one end 802 * @param fd2 return location for the other end 803 * @param blocking #TRUE if pipe should be blocking 804 * @param error error return 805 * @returns #FALSE on failure (if error is set) 806 */ 807 dbus_bool_t 808 _dbus_full_duplex_pipe (int *fd1, 809 int *fd2, 810 dbus_bool_t blocking, 811 DBusError *error) 812 { 813 SOCKET temp, socket1 = -1, socket2 = -1; 814 struct sockaddr_in saddr; 815 int len; 816 u_long arg; 817 fd_set read_set, write_set; 818 struct timeval tv; 819 int res; 820 821 _dbus_win_startup_winsock (); 822 823 temp = socket (AF_INET, SOCK_STREAM, 0); 824 if (temp == INVALID_SOCKET) 825 { 826 DBUS_SOCKET_SET_ERRNO (); 827 goto out0; 828 } 829 830 _DBUS_ZERO (saddr); 831 saddr.sin_family = AF_INET; 832 saddr.sin_port = 0; 833 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); 834 835 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR) 836 { 837 DBUS_SOCKET_SET_ERRNO (); 838 goto out0; 839 } 840 841 if (listen (temp, 1) == SOCKET_ERROR) 842 { 843 DBUS_SOCKET_SET_ERRNO (); 844 goto out0; 845 } 846 847 len = sizeof (saddr); 848 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR) 849 { 850 DBUS_SOCKET_SET_ERRNO (); 851 goto out0; 852 } 853 854 socket1 = socket (AF_INET, SOCK_STREAM, 0); 855 if (socket1 == INVALID_SOCKET) 856 { 857 DBUS_SOCKET_SET_ERRNO (); 858 goto out0; 859 } 860 861 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR) 862 { 863 DBUS_SOCKET_SET_ERRNO (); 864 goto out1; 865 } 866 867 socket2 = accept (temp, (struct sockaddr *) &saddr, &len); 868 if (socket2 == INVALID_SOCKET) 869 { 870 DBUS_SOCKET_SET_ERRNO (); 871 goto out1; 872 } 873 874 if (!blocking) 875 { 876 arg = 1; 877 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR) 878 { 879 DBUS_SOCKET_SET_ERRNO (); 880 goto out2; 881 } 882 883 arg = 1; 884 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR) 885 { 886 DBUS_SOCKET_SET_ERRNO (); 887 goto out2; 888 } 889 } 890 891 *fd1 = socket1; 892 *fd2 = socket2; 893 894 _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n", 895 *fd1, socket1, *fd2, socket2); 896 897 closesocket (temp); 898 899 return TRUE; 900 901 out2: 902 closesocket (socket2); 903 out1: 904 closesocket (socket1); 905 out0: 906 closesocket (temp); 907 908 dbus_set_error (error, _dbus_error_from_errno (errno), 909 "Could not setup socket pair: %s", 910 _dbus_strerror_from_errno ()); 911 912 return FALSE; 913 } 914 915 /** 916 * Wrapper for poll(). 917 * 918 * @param fds the file descriptors to poll 919 * @param n_fds number of descriptors in the array 920 * @param timeout_milliseconds timeout or -1 for infinite 921 * @returns numbers of fds with revents, or <0 on error 922 */ 923 int 924 _dbus_poll (DBusPollFD *fds, 925 int n_fds, 926 int timeout_milliseconds) 927 { 928 #define USE_CHRIS_IMPL 0 929 930 #if USE_CHRIS_IMPL 931 932 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000 933 char msg[DBUS_POLL_CHAR_BUFFER_SIZE]; 934 char *msgp; 935 936 int ret = 0; 937 int i; 938 struct timeval tv; 939 int ready; 940 941 #define DBUS_STACK_WSAEVENTS 256 942 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS]; 943 WSAEVENT *pEvents = NULL; 944 if (n_fds > DBUS_STACK_WSAEVENTS) 945 pEvents = calloc(sizeof(WSAEVENT), n_fds); 946 else 947 pEvents = eventsOnStack; 948 949 950 #ifdef DBUS_ENABLE_VERBOSE_MODE 951 msgp = msg; 952 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds); 953 for (i = 0; i < n_fds; i++) 954 { 955 static dbus_bool_t warned = FALSE; 956 DBusPollFD *fdp = &fds[i]; 957 958 959 if (fdp->events & _DBUS_POLLIN) 960 msgp += sprintf (msgp, "R:%d ", fdp->fd); 961 962 if (fdp->events & _DBUS_POLLOUT) 963 msgp += sprintf (msgp, "W:%d ", fdp->fd); 964 965 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); 966 967 // FIXME: more robust code for long msg 968 // create on heap when msg[] becomes too small 969 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE) 970 { 971 _dbus_assert_not_reached ("buffer overflow in _dbus_poll"); 972 } 973 } 974 975 msgp += sprintf (msgp, "\n"); 976 _dbus_verbose ("%s",msg); 977 #endif 978 for (i = 0; i < n_fds; i++) 979 { 980 DBusPollFD *fdp = &fds[i]; 981 WSAEVENT ev; 982 long lNetworkEvents = FD_OOB; 983 984 ev = WSACreateEvent(); 985 986 if (fdp->events & _DBUS_POLLIN) 987 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE; 988 989 if (fdp->events & _DBUS_POLLOUT) 990 lNetworkEvents |= FD_WRITE | FD_CONNECT; 991 992 WSAEventSelect(fdp->fd, ev, lNetworkEvents); 993 994 pEvents[i] = ev; 995 } 996 997 998 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE); 999 1000 if (DBUS_SOCKET_API_RETURNS_ERROR (ready)) 1001 { 1002 DBUS_SOCKET_SET_ERRNO (); 1003 if (errno != WSAEWOULDBLOCK) 1004 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ()); 1005 ret = -1; 1006 } 1007 else if (ready == WSA_WAIT_TIMEOUT) 1008 { 1009 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n"); 1010 ret = 0; 1011 } 1012 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds)) 1013 { 1014 msgp = msg; 1015 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready); 1016 1017 for (i = 0; i < n_fds; i++) 1018 { 1019 DBusPollFD *fdp = &fds[i]; 1020 WSANETWORKEVENTS ne; 1021 1022 fdp->revents = 0; 1023 1024 WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne); 1025 1026 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) 1027 fdp->revents |= _DBUS_POLLIN; 1028 1029 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT)) 1030 fdp->revents |= _DBUS_POLLOUT; 1031 1032 if (ne.lNetworkEvents & (FD_OOB)) 1033 fdp->revents |= _DBUS_POLLERR; 1034 1035 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) 1036 msgp += sprintf (msgp, "R:%d ", fdp->fd); 1037 1038 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT)) 1039 msgp += sprintf (msgp, "W:%d ", fdp->fd); 1040 1041 if (ne.lNetworkEvents & (FD_OOB)) 1042 msgp += sprintf (msgp, "E:%d ", fdp->fd); 1043 1044 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents); 1045 1046 if(ne.lNetworkEvents) 1047 ret++; 1048 1049 WSAEventSelect(fdp->fd, pEvents[i], 0); 1050 } 1051 1052 msgp += sprintf (msgp, "\n"); 1053 _dbus_verbose ("%s",msg); 1054 } 1055 else 1056 { 1057 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!"); 1058 ret = -1; 1059 } 1060 1061 for(i = 0; i < n_fds; i++) 1062 { 1063 WSACloseEvent(pEvents[i]); 1064 } 1065 1066 if (n_fds > DBUS_STACK_WSAEVENTS) 1067 free(pEvents); 1068 1069 return ret; 1070 1071 #else /* USE_CHRIS_IMPL */ 1072 1073 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000 1074 char msg[DBUS_POLL_CHAR_BUFFER_SIZE]; 1075 char *msgp; 1076 1077 fd_set read_set, write_set, err_set; 1078 int max_fd = 0; 1079 int i; 1080 struct timeval tv; 1081 int ready; 1082 1083 FD_ZERO (&read_set); 1084 FD_ZERO (&write_set); 1085 FD_ZERO (&err_set); 1086 1087 1088 #ifdef DBUS_ENABLE_VERBOSE_MODE 1089 msgp = msg; 1090 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds); 1091 for (i = 0; i < n_fds; i++) 1092 { 1093 static dbus_bool_t warned = FALSE; 1094 DBusPollFD *fdp = &fds[i]; 1095 1096 1097 if (fdp->events & _DBUS_POLLIN) 1098 msgp += sprintf (msgp, "R:%d ", fdp->fd); 1099 1100 if (fdp->events & _DBUS_POLLOUT) 1101 msgp += sprintf (msgp, "W:%d ", fdp->fd); 1102 1103 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); 1104 1105 // FIXME: more robust code for long msg 1106 // create on heap when msg[] becomes too small 1107 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE) 1108 { 1109 _dbus_assert_not_reached ("buffer overflow in _dbus_poll"); 1110 } 1111 } 1112 1113 msgp += sprintf (msgp, "\n"); 1114 _dbus_verbose ("%s",msg); 1115 #endif 1116 for (i = 0; i < n_fds; i++) 1117 { 1118 DBusPollFD *fdp = &fds[i]; 1119 1120 if (fdp->events & _DBUS_POLLIN) 1121 FD_SET (fdp->fd, &read_set); 1122 1123 if (fdp->events & _DBUS_POLLOUT) 1124 FD_SET (fdp->fd, &write_set); 1125 1126 FD_SET (fdp->fd, &err_set); 1127 1128 max_fd = MAX (max_fd, fdp->fd); 1129 } 1130 1131 1132 tv.tv_sec = timeout_milliseconds / 1000; 1133 tv.tv_usec = (timeout_milliseconds % 1000) * 1000; 1134 1135 ready = select (max_fd + 1, &read_set, &write_set, &err_set, 1136 timeout_milliseconds < 0 ? NULL : &tv); 1137 1138 if (DBUS_SOCKET_API_RETURNS_ERROR (ready)) 1139 { 1140 DBUS_SOCKET_SET_ERRNO (); 1141 if (errno != WSAEWOULDBLOCK) 1142 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ()); 1143 } 1144 else if (ready == 0) 1145 _dbus_verbose ("select: = 0\n"); 1146 else 1147 if (ready > 0) 1148 { 1149 #ifdef DBUS_ENABLE_VERBOSE_MODE 1150 msgp = msg; 1151 msgp += sprintf (msgp, "select: = %d:\n\t", ready); 1152 1153 for (i = 0; i < n_fds; i++) 1154 { 1155 DBusPollFD *fdp = &fds[i]; 1156 1157 if (FD_ISSET (fdp->fd, &read_set)) 1158 msgp += sprintf (msgp, "R:%d ", fdp->fd); 1159 1160 if (FD_ISSET (fdp->fd, &write_set)) 1161 msgp += sprintf (msgp, "W:%d ", fdp->fd); 1162 1163 if (FD_ISSET (fdp->fd, &err_set)) 1164 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); 1165 } 1166 msgp += sprintf (msgp, "\n"); 1167 _dbus_verbose ("%s",msg); 1168 #endif 1169 1170 for (i = 0; i < n_fds; i++) 1171 { 1172 DBusPollFD *fdp = &fds[i]; 1173 1174 fdp->revents = 0; 1175 1176 if (FD_ISSET (fdp->fd, &read_set)) 1177 fdp->revents |= _DBUS_POLLIN; 1178 1179 if (FD_ISSET (fdp->fd, &write_set)) 1180 fdp->revents |= _DBUS_POLLOUT; 1181 1182 if (FD_ISSET (fdp->fd, &err_set)) 1183 fdp->revents |= _DBUS_POLLERR; 1184 } 1185 } 1186 return ready; 1187 #endif /* USE_CHRIS_IMPL */ 1188 } 1189 1190 1191 1192 1193 /****************************************************************************** 1194 1195 Original CVS version of dbus-sysdeps.c 1196 1197 ******************************************************************************/ 1198 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ 1199 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation) 1200 * 1201 * Copyright (C) 2002, 2003 Red Hat, Inc. 1202 * Copyright (C) 2003 CodeFactory AB 1203 * Copyright (C) 2005 Novell, Inc. 1204 * 1205 * Licensed under the Academic Free License version 2.1 1206 * 1207 * This program is free software; you can redistribute it and/or modify 1208 * it under the terms of the GNU General Public License as published by 1209 * the Free Software Foundation; either version 2 of the License, or 1210 * (at your option) any later version. 1211 * 1212 * This program is distributed in the hope that it will be useful, 1213 * but WITHOUT ANY WARRANTY; without even the implied warranty of 1214 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1215 * GNU General Public License for more details. 1216 * 1217 * You should have received a copy of the GNU General Public License 1218 * along with this program; if not, write to the Free Software 1219 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 1220 * 1221 */ 1222 1223 1224 /** 1225 * Exit the process, returning the given value. 1226 * 1227 * @param code the exit code 1228 */ 1229 void 1230 _dbus_exit (int code) 1231 { 1232 _exit (code); 1233 } 1234 1235 /** 1236 * Creates a socket and connects to a socket at the given host 1237 * and port. The connection fd is returned, and is set up as 1238 * nonblocking. 1239 * 1240 * @param host the host name to connect to 1241 * @param port the port to connect to 1242 * @param family the address family to listen on, NULL for all 1243 * @param error return location for error code 1244 * @returns connection file descriptor or -1 on error 1245 */ 1246 int 1247 _dbus_connect_tcp_socket (const char *host, 1248 const char *port, 1249 const char *family, 1250 DBusError *error) 1251 { 1252 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error); 1253 } 1254 1255 int 1256 _dbus_connect_tcp_socket_with_nonce (const char *host, 1257 const char *port, 1258 const char *family, 1259 const char *noncefile, 1260 DBusError *error) 1261 { 1262 int fd = -1, res; 1263 struct addrinfo hints; 1264 struct addrinfo *ai, *tmp; 1265 1266 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 1267 1268 _dbus_win_startup_winsock (); 1269 1270 _DBUS_ZERO (hints); 1271 1272 if (!family) 1273 hints.ai_family = AF_UNSPEC; 1274 else if (!strcmp(family, "ipv4")) 1275 hints.ai_family = AF_INET; 1276 else if (!strcmp(family, "ipv6")) 1277 hints.ai_family = AF_INET6; 1278 else 1279 { 1280 dbus_set_error (error, 1281 DBUS_ERROR_INVALID_ARGS, 1282 "Unknown address family %s", family); 1283 return -1; 1284 } 1285 hints.ai_protocol = IPPROTO_TCP; 1286 hints.ai_socktype = SOCK_STREAM; 1287 #ifdef AI_ADDRCONFIG 1288 hints.ai_flags = AI_ADDRCONFIG; 1289 #else 1290 hints.ai_flags = 0; 1291 #endif 1292 1293 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai) 1294 { 1295 dbus_set_error (error, 1296 _dbus_error_from_errno (res), 1297 "Failed to lookup host/port: \"%s:%s\": %s (%d)", 1298 host, port, _dbus_strerror(res), res); 1299 return -1; 1300 } 1301 1302 tmp = ai; 1303 while (tmp) 1304 { 1305 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET) 1306 { 1307 DBUS_SOCKET_SET_ERRNO (); 1308 dbus_set_error (error, 1309 _dbus_error_from_errno (errno), 1310 "Failed to open socket: %s", 1311 _dbus_strerror_from_errno ()); 1312 freeaddrinfo(ai); 1313 return -1; 1314 } 1315 _DBUS_ASSERT_ERROR_IS_CLEAR(error); 1316 1317 if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR) 1318 { 1319 DBUS_SOCKET_SET_ERRNO (); 1320 closesocket(fd); 1321 fd = -1; 1322 tmp = tmp->ai_next; 1323 continue; 1324 } 1325 1326 break; 1327 } 1328 freeaddrinfo(ai); 1329 1330 if (fd == -1) 1331 { 1332 dbus_set_error (error, 1333 _dbus_error_from_errno (errno), 1334 "Failed to connect to socket \"%s:%s\" %s", 1335 host, port, _dbus_strerror_from_errno ()); 1336 return -1; 1337 } 1338 1339 if (noncefile != NULL) 1340 { 1341 DBusString noncefileStr; 1342 dbus_bool_t ret; 1343 if (!_dbus_string_init (&noncefileStr) || 1344 !_dbus_string_append(&noncefileStr, noncefile)) 1345 { 1346 closesocket (fd); 1347 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); 1348 return -1; 1349 } 1350 1351 ret = _dbus_send_nonce (fd, &noncefileStr, error); 1352 1353 _dbus_string_free (&noncefileStr); 1354 1355 if (!ret) 1356 { 1357 closesocket (fd); 1358 return -1; 1359 } 1360 } 1361 1362 if (!_dbus_set_fd_nonblocking (fd, error)) 1363 { 1364 closesocket (fd); 1365 return -1; 1366 } 1367 1368 return fd; 1369 } 1370 1371 /** 1372 * Creates a socket and binds it to the given path, then listens on 1373 * the socket. The socket is set to be nonblocking. In case of port=0 1374 * a random free port is used and returned in the port parameter. 1375 * If inaddr_any is specified, the hostname is ignored. 1376 * 1377 * @param host the host name to listen on 1378 * @param port the port to listen on, if zero a free port will be used 1379 * @param family the address family to listen on, NULL for all 1380 * @param retport string to return the actual port listened on 1381 * @param fds_p location to store returned file descriptors 1382 * @param error return location for errors 1383 * @returns the number of listening file descriptors or -1 on error 1384 */ 1385 1386 int 1387 _dbus_listen_tcp_socket (const char *host, 1388 const char *port, 1389 const char *family, 1390 DBusString *retport, 1391 int **fds_p, 1392 DBusError *error) 1393 { 1394 int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1; 1395 struct addrinfo hints; 1396 struct addrinfo *ai, *tmp; 1397 1398 // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old 1399 //That's required for family == IPv6(which is the default on Vista if family is not given) 1400 //So we use our own union instead of sockaddr_gen: 1401 1402 typedef union { 1403 struct sockaddr Address; 1404 struct sockaddr_in AddressIn; 1405 struct sockaddr_in6 AddressIn6; 1406 } mysockaddr_gen; 1407 1408 *fds_p = NULL; 1409 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 1410 1411 _dbus_win_startup_winsock (); 1412 1413 _DBUS_ZERO (hints); 1414 1415 if (!family) 1416 hints.ai_family = AF_UNSPEC; 1417 else if (!strcmp(family, "ipv4")) 1418 hints.ai_family = AF_INET; 1419 else if (!strcmp(family, "ipv6")) 1420 hints.ai_family = AF_INET6; 1421 else 1422 { 1423 dbus_set_error (error, 1424 DBUS_ERROR_INVALID_ARGS, 1425 "Unknown address family %s", family); 1426 return -1; 1427 } 1428 1429 hints.ai_protocol = IPPROTO_TCP; 1430 hints.ai_socktype = SOCK_STREAM; 1431 #ifdef AI_ADDRCONFIG 1432 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE; 1433 #else 1434 hints.ai_flags = AI_PASSIVE; 1435 #endif 1436 1437 redo_lookup_with_port: 1438 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai) 1439 { 1440 dbus_set_error (error, 1441 _dbus_error_from_errno (res), 1442 "Failed to lookup host/port: \"%s:%s\": %s (%d)", 1443 host ? host : "*", port, _dbus_strerror(res), res); 1444 return -1; 1445 } 1446 1447 tmp = ai; 1448 while (tmp) 1449 { 1450 int fd = -1, *newlisten_fd; 1451 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET) 1452 { 1453 DBUS_SOCKET_SET_ERRNO (); 1454 dbus_set_error (error, 1455 _dbus_error_from_errno (errno), 1456 "Failed to open socket: %s", 1457 _dbus_strerror_from_errno ()); 1458 goto failed; 1459 } 1460 _DBUS_ASSERT_ERROR_IS_CLEAR(error); 1461 1462 if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR) 1463 { 1464 DBUS_SOCKET_SET_ERRNO (); 1465 dbus_set_error (error, _dbus_error_from_errno (errno), 1466 "Failed to bind socket \"%s:%s\": %s", 1467 host ? host : "*", port, _dbus_strerror_from_errno ()); 1468 closesocket (fd); 1469 goto failed; 1470 } 1471 1472 if (listen (fd, 30 /* backlog */) == SOCKET_ERROR) 1473 { 1474 DBUS_SOCKET_SET_ERRNO (); 1475 dbus_set_error (error, _dbus_error_from_errno (errno), 1476 "Failed to listen on socket \"%s:%s\": %s", 1477 host ? host : "*", port, _dbus_strerror_from_errno ()); 1478 closesocket (fd); 1479 goto failed; 1480 } 1481 1482 newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1)); 1483 if (!newlisten_fd) 1484 { 1485 closesocket (fd); 1486 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, 1487 "Failed to allocate file handle array"); 1488 goto failed; 1489 } 1490 listen_fd = newlisten_fd; 1491 listen_fd[nlisten_fd] = fd; 1492 nlisten_fd++; 1493 1494 if (!_dbus_string_get_length(retport)) 1495 { 1496 /* If the user didn't specify a port, or used 0, then 1497 the kernel chooses a port. After the first address 1498 is bound to, we need to force all remaining addresses 1499 to use the same port */ 1500 if (!port || !strcmp(port, "0")) 1501 { 1502 mysockaddr_gen addr; 1503 socklen_t addrlen = sizeof(addr); 1504 char portbuf[10]; 1505 1506 if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR) 1507 { 1508 DBUS_SOCKET_SET_ERRNO (); 1509 dbus_set_error (error, _dbus_error_from_errno (errno), 1510 "Failed to resolve port \"%s:%s\": %s", 1511 host ? host : "*", port, _dbus_strerror_from_errno()); 1512 goto failed; 1513 } 1514 snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port ); 1515 if (!_dbus_string_append(retport, portbuf)) 1516 { 1517 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); 1518 goto failed; 1519 } 1520 1521 /* Release current address list & redo lookup */ 1522 port = _dbus_string_get_const_data(retport); 1523 freeaddrinfo(ai); 1524 goto redo_lookup_with_port; 1525 } 1526 else 1527 { 1528 if (!_dbus_string_append(retport, port)) 1529 { 1530 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); 1531 goto failed; 1532 } 1533 } 1534 } 1535 1536 tmp = tmp->ai_next; 1537 } 1538 freeaddrinfo(ai); 1539 ai = NULL; 1540 1541 if (!nlisten_fd) 1542 { 1543 _dbus_win_set_errno (WSAEADDRINUSE); 1544 dbus_set_error (error, _dbus_error_from_errno (errno), 1545 "Failed to bind socket \"%s:%s\": %s", 1546 host ? host : "*", port, _dbus_strerror_from_errno ()); 1547 return -1; 1548 } 1549 1550 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num); 1551 1552 for (i = 0 ; i < nlisten_fd ; i++) 1553 { 1554 if (!_dbus_set_fd_nonblocking (listen_fd[i], error)) 1555 { 1556 goto failed; 1557 } 1558 } 1559 1560 *fds_p = listen_fd; 1561 1562 return nlisten_fd; 1563 1564 failed: 1565 if (ai) 1566 freeaddrinfo(ai); 1567 for (i = 0 ; i < nlisten_fd ; i++) 1568 closesocket (listen_fd[i]); 1569 dbus_free(listen_fd); 1570 return -1; 1571 } 1572 1573 1574 /** 1575 * Accepts a connection on a listening socket. 1576 * Handles EINTR for you. 1577 * 1578 * @param listen_fd the listen file descriptor 1579 * @returns the connection fd of the client, or -1 on error 1580 */ 1581 int 1582 _dbus_accept (int listen_fd) 1583 { 1584 int client_fd; 1585 1586 retry: 1587 client_fd = accept (listen_fd, NULL, NULL); 1588 1589 if (DBUS_SOCKET_IS_INVALID (client_fd)) 1590 { 1591 DBUS_SOCKET_SET_ERRNO (); 1592 if (errno == EINTR) 1593 goto retry; 1594 } 1595 1596 _dbus_verbose ("client fd %d accepted\n", client_fd); 1597 1598 return client_fd; 1599 } 1600 1601 1602 1603 1604 dbus_bool_t 1605 _dbus_send_credentials_socket (int handle, 1606 DBusError *error) 1607 { 1608 /* FIXME: for the session bus credentials shouldn't matter (?), but 1609 * for the system bus they are presumably essential. A rough outline 1610 * of a way to implement the credential transfer would be this: 1611 * 1612 * client waits to *read* a byte. 1613 * 1614 * server creates a named pipe with a random name, sends a byte 1615 * contining its length, and its name. 1616 * 1617 * client reads the name, connects to it (using Win32 API). 1618 * 1619 * server waits for connection to the named pipe, then calls 1620 * ImpersonateNamedPipeClient(), notes its now-current credentials, 1621 * calls RevertToSelf(), closes its handles to the named pipe, and 1622 * is done. (Maybe there is some other way to get the SID of a named 1623 * pipe client without having to use impersonation?) 1624 * 1625 * client closes its handles and is done. 1626 * 1627 * Ralf: Why not sending credentials over the given this connection ? 1628 * Using named pipes makes it impossible to be connected from a unix client. 1629 * 1630 */ 1631 int bytes_written; 1632 DBusString buf; 1633 1634 _dbus_string_init_const_len (&buf, "\0", 1); 1635 again: 1636 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 ); 1637 1638 if (bytes_written < 0 && errno == EINTR) 1639 goto again; 1640 1641 if (bytes_written < 0) 1642 { 1643 dbus_set_error (error, _dbus_error_from_errno (errno), 1644 "Failed to write credentials byte: %s", 1645 _dbus_strerror_from_errno ()); 1646 return FALSE; 1647 } 1648 else if (bytes_written == 0) 1649 { 1650 dbus_set_error (error, DBUS_ERROR_IO_ERROR, 1651 "wrote zero bytes writing credentials byte"); 1652 return FALSE; 1653 } 1654 else 1655 { 1656 _dbus_assert (bytes_written == 1); 1657 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n"); 1658 return TRUE; 1659 } 1660 return TRUE; 1661 } 1662 1663 /** 1664 * Reads a single byte which must be nul (an error occurs otherwise), 1665 * and reads unix credentials if available. Fills in pid/uid/gid with 1666 * -1 if no credentials are available. Return value indicates whether 1667 * a byte was read, not whether we got valid credentials. On some 1668 * systems, such as Linux, reading/writing the byte isn't actually 1669 * required, but we do it anyway just to avoid multiple codepaths. 1670 * 1671 * Fails if no byte is available, so you must select() first. 1672 * 1673 * The point of the byte is that on some systems we have to 1674 * use sendmsg()/recvmsg() to transmit credentials. 1675 * 1676 * @param client_fd the client file descriptor 1677 * @param credentials struct to fill with credentials of client 1678 * @param error location to store error code 1679 * @returns #TRUE on success 1680 */ 1681 dbus_bool_t 1682 _dbus_read_credentials_socket (int handle, 1683 DBusCredentials *credentials, 1684 DBusError *error) 1685 { 1686 int bytes_read = 0; 1687 DBusString buf; 1688 1689 // could fail due too OOM 1690 if (_dbus_string_init(&buf)) 1691 { 1692 bytes_read = _dbus_read_socket(handle, &buf, 1 ); 1693 1694 if (bytes_read > 0) 1695 _dbus_verbose("got one zero byte from server"); 1696 1697 _dbus_string_free(&buf); 1698 } 1699 1700 _dbus_credentials_add_from_current_process (credentials); 1701 _dbus_verbose("FIXME: get faked credentials from current process"); 1702 1703 return TRUE; 1704 } 1705 1706 /** 1707 * Checks to make sure the given directory is 1708 * private to the user 1709 * 1710 * @param dir the name of the directory 1711 * @param error error return 1712 * @returns #FALSE on failure 1713 **/ 1714 dbus_bool_t 1715 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error) 1716 { 1717 /* TODO */ 1718 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 1719 return TRUE; 1720 } 1721 1722 1723 /** 1724 * Appends the given filename to the given directory. 1725 * 1726 * @todo it might be cute to collapse multiple '/' such as "foo//" 1727 * concat "//bar" 1728 * 1729 * @param dir the directory name 1730 * @param next_component the filename 1731 * @returns #TRUE on success 1732 */ 1733 dbus_bool_t 1734 _dbus_concat_dir_and_file (DBusString *dir, 1735 const DBusString *next_component) 1736 { 1737 dbus_bool_t dir_ends_in_slash; 1738 dbus_bool_t file_starts_with_slash; 1739 1740 if (_dbus_string_get_length (dir) == 0 || 1741 _dbus_string_get_length (next_component) == 0) 1742 return TRUE; 1743 1744 dir_ends_in_slash = 1745 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) || 1746 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1)); 1747 1748 file_starts_with_slash = 1749 ('/' == _dbus_string_get_byte (next_component, 0) || 1750 '\\' == _dbus_string_get_byte (next_component, 0)); 1751 1752 if (dir_ends_in_slash && file_starts_with_slash) 1753 { 1754 _dbus_string_shorten (dir, 1); 1755 } 1756 else if (!(dir_ends_in_slash || file_starts_with_slash)) 1757 { 1758 if (!_dbus_string_append_byte (dir, '\\')) 1759 return FALSE; 1760 } 1761 1762 return _dbus_string_copy (next_component, 0, dir, 1763 _dbus_string_get_length (dir)); 1764 } 1765 1766 /*---------------- DBusCredentials ----------------------------------*/ 1767 1768 /** 1769 * Adds the credentials corresponding to the given username. 1770 * 1771 * @param credentials credentials to fill in 1772 * @param username the username 1773 * @returns #TRUE if the username existed and we got some credentials 1774 */ 1775 dbus_bool_t 1776 _dbus_credentials_add_from_user (DBusCredentials *credentials, 1777 const DBusString *username) 1778 { 1779 return _dbus_credentials_add_windows_sid (credentials, 1780 _dbus_string_get_const_data(username)); 1781 } 1782 1783 /** 1784 * Adds the credentials of the current process to the 1785 * passed-in credentials object. 1786 * 1787 * @param credentials credentials to add to 1788 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added 1789 */ 1790 1791 dbus_bool_t 1792 _dbus_credentials_add_from_current_process (DBusCredentials *credentials) 1793 { 1794 dbus_bool_t retval = FALSE; 1795 char *sid = NULL; 1796 1797 if (!_dbus_getsid(&sid)) 1798 goto failed; 1799 1800 if (!_dbus_credentials_add_unix_pid(credentials, _dbus_getpid())) 1801 goto failed; 1802 1803 if (!_dbus_credentials_add_windows_sid (credentials,sid)) 1804 goto failed; 1805 1806 retval = TRUE; 1807 goto end; 1808 failed: 1809 retval = FALSE; 1810 end: 1811 if (sid) 1812 LocalFree(sid); 1813 1814 return retval; 1815 } 1816 1817 /** 1818 * Append to the string the identity we would like to have when we 1819 * authenticate, on UNIX this is the current process UID and on 1820 * Windows something else, probably a Windows SID string. No escaping 1821 * is required, that is done in dbus-auth.c. The username here 1822 * need not be anything human-readable, it can be the machine-readable 1823 * form i.e. a user id. 1824 * 1825 * @param str the string to append to 1826 * @returns #FALSE on no memory 1827 * @todo to which class belongs this 1828 */ 1829 dbus_bool_t 1830 _dbus_append_user_from_current_process (DBusString *str) 1831 { 1832 dbus_bool_t retval = FALSE; 1833 char *sid = NULL; 1834 1835 if (!_dbus_getsid(&sid)) 1836 return FALSE; 1837 1838 retval = _dbus_string_append (str,sid); 1839 1840 LocalFree(sid); 1841 return retval; 1842 } 1843 1844 /** 1845 * Gets our process ID 1846 * @returns process ID 1847 */ 1848 dbus_pid_t 1849 _dbus_getpid (void) 1850 { 1851 return GetCurrentProcessId (); 1852 } 1853 1854 /** nanoseconds in a second */ 1855 #define NANOSECONDS_PER_SECOND 1000000000 1856 /** microseconds in a second */ 1857 #define MICROSECONDS_PER_SECOND 1000000 1858 /** milliseconds in a second */ 1859 #define MILLISECONDS_PER_SECOND 1000 1860 /** nanoseconds in a millisecond */ 1861 #define NANOSECONDS_PER_MILLISECOND 1000000 1862 /** microseconds in a millisecond */ 1863 #define MICROSECONDS_PER_MILLISECOND 1000 1864 1865 /** 1866 * Sleeps the given number of milliseconds. 1867 * @param milliseconds number of milliseconds 1868 */ 1869 void 1870 _dbus_sleep_milliseconds (int milliseconds) 1871 { 1872 Sleep (milliseconds); 1873 } 1874 1875 1876 /** 1877 * Get current time, as in gettimeofday(). 1878 * 1879 * @param tv_sec return location for number of seconds 1880 * @param tv_usec return location for number of microseconds 1881 */ 1882 void 1883 _dbus_get_current_time (long *tv_sec, 1884 long *tv_usec) 1885 { 1886 FILETIME ft; 1887 dbus_uint64_t time64; 1888 1889 GetSystemTimeAsFileTime (&ft); 1890 1891 memcpy (&time64, &ft, sizeof (time64)); 1892 1893 /* Convert from 100s of nanoseconds since 1601-01-01 1894 * to Unix epoch. Yes, this is Y2038 unsafe. 1895 */ 1896 time64 -= DBUS_INT64_CONSTANT (116444736000000000); 1897 time64 /= 10; 1898 1899 if (tv_sec) 1900 *tv_sec = time64 / 1000000; 1901 1902 if (tv_usec) 1903 *tv_usec = time64 % 1000000; 1904 } 1905 1906 1907 /** 1908 * signal (SIGPIPE, SIG_IGN); 1909 */ 1910 void 1911 _dbus_disable_sigpipe (void) 1912 { 1913 } 1914 1915 /** 1916 * Creates a directory; succeeds if the directory 1917 * is created or already existed. 1918 * 1919 * @param filename directory filename 1920 * @param error initialized error object 1921 * @returns #TRUE on success 1922 */ 1923 dbus_bool_t 1924 _dbus_create_directory (const DBusString *filename, 1925 DBusError *error) 1926 { 1927 const char *filename_c; 1928 1929 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 1930 1931 filename_c = _dbus_string_get_const_data (filename); 1932 1933 if (!CreateDirectoryA (filename_c, NULL)) 1934 { 1935 if (GetLastError () == ERROR_ALREADY_EXISTS) 1936 return TRUE; 1937 1938 dbus_set_error (error, DBUS_ERROR_FAILED, 1939 "Failed to create directory %s: %s\n", 1940 filename_c, _dbus_strerror_from_errno ()); 1941 return FALSE; 1942 } 1943 else 1944 return TRUE; 1945 } 1946 1947 1948 /** 1949 * Generates the given number of random bytes, 1950 * using the best mechanism we can come up with. 1951 * 1952 * @param str the string 1953 * @param n_bytes the number of random bytes to append to string 1954 * @returns #TRUE on success, #FALSE if no memory 1955 */ 1956 dbus_bool_t 1957 _dbus_generate_random_bytes (DBusString *str, 1958 int n_bytes) 1959 { 1960 int old_len; 1961 char *p; 1962 HCRYPTPROV hprov; 1963 1964 old_len = _dbus_string_get_length (str); 1965 1966 if (!_dbus_string_lengthen (str, n_bytes)) 1967 return FALSE; 1968 1969 p = _dbus_string_get_data_len (str, old_len, n_bytes); 1970 1971 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) 1972 return FALSE; 1973 1974 if (!CryptGenRandom (hprov, n_bytes, p)) 1975 { 1976 CryptReleaseContext (hprov, 0); 1977 return FALSE; 1978 } 1979 1980 CryptReleaseContext (hprov, 0); 1981 1982 return TRUE; 1983 } 1984 1985 /** 1986 * Gets the temporary files directory by inspecting the environment variables 1987 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned 1988 * 1989 * @returns location of temp directory 1990 */ 1991 const char* 1992 _dbus_get_tmpdir(void) 1993 { 1994 static const char* tmpdir = NULL; 1995 static char buf[1000]; 1996 1997 if (tmpdir == NULL) 1998 { 1999 char *last_slash; 2000 2001 if (!GetTempPathA (sizeof (buf), buf)) 2002 { 2003 _dbus_warn ("GetTempPath failed\n"); 2004 _dbus_abort (); 2005 } 2006 2007 /* Drop terminating backslash or slash */ 2008 last_slash = _mbsrchr (buf, '\\'); 2009 if (last_slash > buf && last_slash[1] == '\0') 2010 last_slash[0] = '\0'; 2011 last_slash = _mbsrchr (buf, '/'); 2012 if (last_slash > buf && last_slash[1] == '\0') 2013 last_slash[0] = '\0'; 2014 2015 tmpdir = buf; 2016 } 2017 2018 _dbus_assert(tmpdir != NULL); 2019 2020 return tmpdir; 2021 } 2022 2023 2024 /** 2025 * Deletes the given file. 2026 * 2027 * @param filename the filename 2028 * @param error error location 2029 * 2030 * @returns #TRUE if unlink() succeeded 2031 */ 2032 dbus_bool_t 2033 _dbus_delete_file (const DBusString *filename, 2034 DBusError *error) 2035 { 2036 const char *filename_c; 2037 2038 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 2039 2040 filename_c = _dbus_string_get_const_data (filename); 2041 2042 if (DeleteFileA (filename_c) == 0) 2043 { 2044 dbus_set_error (error, DBUS_ERROR_FAILED, 2045 "Failed to delete file %s: %s\n", 2046 filename_c, _dbus_strerror_from_errno ()); 2047 return FALSE; 2048 } 2049 else 2050 return TRUE; 2051 } 2052 2053 /* Forward declaration of prototype used in next function */ 2054 static dbus_bool_t 2055 _dbus_get_install_root(char *prefix, int len); 2056 2057 /* 2058 * replaces the term DBUS_PREFIX in configure_time_path by the 2059 * current dbus installation directory. On unix this function is a noop 2060 * 2061 * @param configure_time_path 2062 * @return real path 2063 */ 2064 const char * 2065 _dbus_replace_install_prefix (const char *configure_time_path) 2066 { 2067 #ifndef DBUS_PREFIX 2068 return configure_time_path; 2069 #else 2070 static char retval[1000]; 2071 static char runtime_prefix[1000]; 2072 int len = 1000; 2073 int i; 2074 2075 if (!configure_time_path) 2076 return NULL; 2077 2078 if ((!_dbus_get_install_root(runtime_prefix, len) || 2079 strncmp (configure_time_path, DBUS_PREFIX "/", 2080 strlen (DBUS_PREFIX) + 1))) { 2081 strcat (retval, configure_time_path); 2082 return retval; 2083 } 2084 2085 strcpy (retval, runtime_prefix); 2086 strcat (retval, configure_time_path + strlen (DBUS_PREFIX) + 1); 2087 2088 /* Somehow, in some situations, backslashes get collapsed in the string. 2089 * Since windows C library accepts both forward and backslashes as 2090 * path separators, convert all backslashes to forward slashes. 2091 */ 2092 2093 for(i = 0; retval[i] != '\0'; i++) { 2094 if(retval[i] == '\\') 2095 retval[i] = '/'; 2096 } 2097 return retval; 2098 #endif 2099 } 2100 2101 #if !defined (DBUS_DISABLE_ASSERTS) || defined(DBUS_BUILD_TESTS) 2102 2103 #if defined(_MSC_VER) || defined(DBUS_WINCE) 2104 # ifdef BACKTRACES 2105 # undef BACKTRACES 2106 # endif 2107 #else 2108 # define BACKTRACES 2109 #endif 2110 2111 #ifdef BACKTRACES 2112 /* 2113 * Backtrace Generator 2114 * 2115 * Copyright 2004 Eric Poech 2116 * Copyright 2004 Robert Shearman 2117 * 2118 * This library is free software; you can redistribute it and/or 2119 * modify it under the terms of the GNU Lesser General Public 2120 * License as published by the Free Software Foundation; either 2121 * version 2.1 of the License, or (at your option) any later version. 2122 * 2123 * This library is distributed in the hope that it will be useful, 2124 * but WITHOUT ANY WARRANTY; without even the implied warranty of 2125 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 2126 * Lesser General Public License for more details. 2127 * 2128 * You should have received a copy of the GNU Lesser General Public 2129 * License along with this library; if not, write to the Free Software 2130 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 2131 */ 2132 2133 #include <winver.h> 2134 #include <imagehlp.h> 2135 #include <stdio.h> 2136 2137 #define DPRINTF _dbus_warn 2138 2139 #ifdef _MSC_VER 2140 #define BOOL int 2141 2142 #define __i386__ 2143 #endif 2144 2145 //#define MAKE_FUNCPTR(f) static typeof(f) * p##f 2146 2147 //MAKE_FUNCPTR(StackWalk); 2148 //MAKE_FUNCPTR(SymGetModuleBase); 2149 //MAKE_FUNCPTR(SymFunctionTableAccess); 2150 //MAKE_FUNCPTR(SymInitialize); 2151 //MAKE_FUNCPTR(SymGetSymFromAddr); 2152 //MAKE_FUNCPTR(SymGetModuleInfo); 2153 static BOOL (WINAPI *pStackWalk)( 2154 DWORD MachineType, 2155 HANDLE hProcess, 2156 HANDLE hThread, 2157 LPSTACKFRAME StackFrame, 2158 PVOID ContextRecord, 2159 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine, 2160 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine, 2161 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, 2162 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress 2163 ); 2164 #ifdef _WIN64 2165 static DWORD64 (WINAPI *pSymGetModuleBase)( 2166 HANDLE hProcess, 2167 DWORD64 dwAddr 2168 ); 2169 static PVOID (WINAPI *pSymFunctionTableAccess)( 2170 HANDLE hProcess, 2171 DWORD64 AddrBase 2172 ); 2173 #else 2174 static DWORD (WINAPI *pSymGetModuleBase)( 2175 HANDLE hProcess, 2176 DWORD dwAddr 2177 ); 2178 static PVOID (WINAPI *pSymFunctionTableAccess)( 2179 HANDLE hProcess, 2180 DWORD AddrBase 2181 ); 2182 #endif 2183 static BOOL (WINAPI *pSymInitialize)( 2184 HANDLE hProcess, 2185 PSTR UserSearchPath, 2186 BOOL fInvadeProcess 2187 ); 2188 static BOOL (WINAPI *pSymGetSymFromAddr)( 2189 HANDLE hProcess, 2190 DWORD Address, 2191 PDWORD Displacement, 2192 PIMAGEHLP_SYMBOL Symbol 2193 ); 2194 static BOOL (WINAPI *pSymGetModuleInfo)( 2195 HANDLE hProcess, 2196 DWORD dwAddr, 2197 PIMAGEHLP_MODULE ModuleInfo 2198 ); 2199 static DWORD (WINAPI *pSymSetOptions)( 2200 DWORD SymOptions 2201 ); 2202 2203 2204 static BOOL init_backtrace() 2205 { 2206 HMODULE hmodDbgHelp = LoadLibraryA("dbghelp"); 2207 /* 2208 #define GETFUNC(x) \ 2209 p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \ 2210 if (!p##x) \ 2211 { \ 2212 return FALSE; \ 2213 } 2214 */ 2215 2216 2217 // GETFUNC(StackWalk); 2218 // GETFUNC(SymGetModuleBase); 2219 // GETFUNC(SymFunctionTableAccess); 2220 // GETFUNC(SymInitialize); 2221 // GETFUNC(SymGetSymFromAddr); 2222 // GETFUNC(SymGetModuleInfo); 2223 2224 #define FUNC(x) #x 2225 2226 pStackWalk = (BOOL (WINAPI *)( 2227 DWORD MachineType, 2228 HANDLE hProcess, 2229 HANDLE hThread, 2230 LPSTACKFRAME StackFrame, 2231 PVOID ContextRecord, 2232 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine, 2233 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine, 2234 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, 2235 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress 2236 ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk)); 2237 #ifdef _WIN64 2238 pSymGetModuleBase=(DWORD64 (WINAPI *)( 2239 HANDLE hProcess, 2240 DWORD64 dwAddr 2241 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase)); 2242 pSymFunctionTableAccess=(PVOID (WINAPI *)( 2243 HANDLE hProcess, 2244 DWORD64 AddrBase 2245 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess)); 2246 #else 2247 pSymGetModuleBase=(DWORD (WINAPI *)( 2248 HANDLE hProcess, 2249 DWORD dwAddr 2250 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase)); 2251 pSymFunctionTableAccess=(PVOID (WINAPI *)( 2252 HANDLE hProcess, 2253 DWORD AddrBase 2254 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess)); 2255 #endif 2256 pSymInitialize = (BOOL (WINAPI *)( 2257 HANDLE hProcess, 2258 PSTR UserSearchPath, 2259 BOOL fInvadeProcess 2260 ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize)); 2261 pSymGetSymFromAddr = (BOOL (WINAPI *)( 2262 HANDLE hProcess, 2263 DWORD Address, 2264 PDWORD Displacement, 2265 PIMAGEHLP_SYMBOL Symbol 2266 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr)); 2267 pSymGetModuleInfo = (BOOL (WINAPI *)( 2268 HANDLE hProcess, 2269 DWORD dwAddr, 2270 PIMAGEHLP_MODULE ModuleInfo 2271 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo)); 2272 pSymSetOptions = (DWORD (WINAPI *)( 2273 DWORD SymOptions 2274 ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions)); 2275 2276 2277 pSymSetOptions(SYMOPT_UNDNAME); 2278 2279 pSymInitialize(GetCurrentProcess(), NULL, TRUE); 2280 2281 return TRUE; 2282 } 2283 2284 static void dump_backtrace_for_thread(HANDLE hThread) 2285 { 2286 STACKFRAME sf; 2287 CONTEXT context; 2288 DWORD dwImageType; 2289 2290 if (!pStackWalk) 2291 if (!init_backtrace()) 2292 return; 2293 2294 /* can't use this function for current thread as GetThreadContext 2295 * doesn't support getting context from current thread */ 2296 if (hThread == GetCurrentThread()) 2297 return; 2298 2299 DPRINTF("Backtrace:\n"); 2300 2301 _DBUS_ZERO(context); 2302 context.ContextFlags = CONTEXT_FULL; 2303 2304 SuspendThread(hThread); 2305 2306 if (!GetThreadContext(hThread, &context)) 2307 { 2308 DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError()); 2309 ResumeThread(hThread); 2310 return; 2311 } 2312 2313 _DBUS_ZERO(sf); 2314 2315 #ifdef __i386__ 2316 sf.AddrFrame.Offset = context.Ebp; 2317 sf.AddrFrame.Mode = AddrModeFlat; 2318 sf.AddrPC.Offset = context.Eip; 2319 sf.AddrPC.Mode = AddrModeFlat; 2320 dwImageType = IMAGE_FILE_MACHINE_I386; 2321 #elif _M_X64 2322 dwImageType = IMAGE_FILE_MACHINE_AMD64; 2323 sf.AddrPC.Offset = context.Rip; 2324 sf.AddrPC.Mode = AddrModeFlat; 2325 sf.AddrFrame.Offset = context.Rsp; 2326 sf.AddrFrame.Mode = AddrModeFlat; 2327 sf.AddrStack.Offset = context.Rsp; 2328 sf.AddrStack.Mode = AddrModeFlat; 2329 #elif _M_IA64 2330 dwImageType = IMAGE_FILE_MACHINE_IA64; 2331 sf.AddrPC.Offset = context.StIIP; 2332 sf.AddrPC.Mode = AddrModeFlat; 2333 sf.AddrFrame.Offset = context.IntSp; 2334 sf.AddrFrame.Mode = AddrModeFlat; 2335 sf.AddrBStore.Offset= context.RsBSP; 2336 sf.AddrBStore.Mode = AddrModeFlat; 2337 sf.AddrStack.Offset = context.IntSp; 2338 sf.AddrStack.Mode = AddrModeFlat; 2339 #else 2340 # error You need to fill in the STACKFRAME structure for your architecture 2341 #endif 2342 2343 while (pStackWalk(dwImageType, GetCurrentProcess(), 2344 hThread, &sf, &context, NULL, pSymFunctionTableAccess, 2345 pSymGetModuleBase, NULL)) 2346 { 2347 BYTE buffer[256]; 2348 IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer; 2349 DWORD dwDisplacement; 2350 2351 pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL); 2352 pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1; 2353 2354 if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset, 2355 &dwDisplacement, pSymbol)) 2356 { 2357 IMAGEHLP_MODULE ModuleInfo; 2358 ModuleInfo.SizeOfStruct = sizeof(ModuleInfo); 2359 2360 if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset, 2361 &ModuleInfo)) 2362 DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset); 2363 else 2364 DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName, 2365 sf.AddrPC.Offset - ModuleInfo.BaseOfImage); 2366 } 2367 else if (dwDisplacement) 2368 DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement); 2369 else 2370 DPRINTF("4\t%s\n", pSymbol->Name); 2371 } 2372 2373 ResumeThread(hThread); 2374 } 2375 2376 static DWORD WINAPI dump_thread_proc(LPVOID lpParameter) 2377 { 2378 dump_backtrace_for_thread((HANDLE)lpParameter); 2379 return 0; 2380 } 2381 2382 /* cannot get valid context from current thread, so we have to execute 2383 * backtrace from another thread */ 2384 static void dump_backtrace() 2385 { 2386 HANDLE hCurrentThread; 2387 HANDLE hThread; 2388 DWORD dwThreadId; 2389 DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), 2390 GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS); 2391 hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread, 2392 0, &dwThreadId); 2393 WaitForSingleObject(hThread, INFINITE); 2394 CloseHandle(hThread); 2395 CloseHandle(hCurrentThread); 2396 } 2397 #endif 2398 #endif /* asserts or tests enabled */ 2399 2400 #ifdef BACKTRACES 2401 void _dbus_print_backtrace(void) 2402 { 2403 init_backtrace(); 2404 dump_backtrace(); 2405 } 2406 #else 2407 void _dbus_print_backtrace(void) 2408 { 2409 _dbus_verbose (" D-Bus not compiled with backtrace support\n"); 2410 } 2411 #endif 2412 2413 static dbus_uint32_t fromAscii(char ascii) 2414 { 2415 if(ascii >= '0' && ascii <= '9') 2416 return ascii - '0'; 2417 if(ascii >= 'A' && ascii <= 'F') 2418 return ascii - 'A' + 10; 2419 if(ascii >= 'a' && ascii <= 'f') 2420 return ascii - 'a' + 10; 2421 return 0; 2422 } 2423 2424 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id, 2425 dbus_bool_t create_if_not_found, 2426 DBusError *error) 2427 { 2428 #ifdef DBUS_WINCE 2429 return TRUE; 2430 // TODO 2431 #else 2432 HW_PROFILE_INFOA info; 2433 char *lpc = &info.szHwProfileGuid[0]; 2434 dbus_uint32_t u; 2435 2436 // the hw-profile guid lives long enough 2437 if(!GetCurrentHwProfileA(&info)) 2438 { 2439 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME 2440 return FALSE; 2441 } 2442 2443 // Form: {12340001-4980-1920-6788-123456789012} 2444 lpc++; 2445 // 12340001 2446 u = ((fromAscii(lpc[0]) << 0) | 2447 (fromAscii(lpc[1]) << 4) | 2448 (fromAscii(lpc[2]) << 8) | 2449 (fromAscii(lpc[3]) << 12) | 2450 (fromAscii(lpc[4]) << 16) | 2451 (fromAscii(lpc[5]) << 20) | 2452 (fromAscii(lpc[6]) << 24) | 2453 (fromAscii(lpc[7]) << 28)); 2454 machine_id->as_uint32s[0] = u; 2455 2456 lpc += 9; 2457 // 4980-1920 2458 u = ((fromAscii(lpc[0]) << 0) | 2459 (fromAscii(lpc[1]) << 4) | 2460 (fromAscii(lpc[2]) << 8) | 2461 (fromAscii(lpc[3]) << 12) | 2462 (fromAscii(lpc[5]) << 16) | 2463 (fromAscii(lpc[6]) << 20) | 2464 (fromAscii(lpc[7]) << 24) | 2465 (fromAscii(lpc[8]) << 28)); 2466 machine_id->as_uint32s[1] = u; 2467 2468 lpc += 10; 2469 // 6788-1234 2470 u = ((fromAscii(lpc[0]) << 0) | 2471 (fromAscii(lpc[1]) << 4) | 2472 (fromAscii(lpc[2]) << 8) | 2473 (fromAscii(lpc[3]) << 12) | 2474 (fromAscii(lpc[5]) << 16) | 2475 (fromAscii(lpc[6]) << 20) | 2476 (fromAscii(lpc[7]) << 24) | 2477 (fromAscii(lpc[8]) << 28)); 2478 machine_id->as_uint32s[2] = u; 2479 2480 lpc += 9; 2481 // 56789012 2482 u = ((fromAscii(lpc[0]) << 0) | 2483 (fromAscii(lpc[1]) << 4) | 2484 (fromAscii(lpc[2]) << 8) | 2485 (fromAscii(lpc[3]) << 12) | 2486 (fromAscii(lpc[4]) << 16) | 2487 (fromAscii(lpc[5]) << 20) | 2488 (fromAscii(lpc[6]) << 24) | 2489 (fromAscii(lpc[7]) << 28)); 2490 machine_id->as_uint32s[3] = u; 2491 #endif 2492 return TRUE; 2493 } 2494 2495 static 2496 HANDLE _dbus_global_lock (const char *mutexname) 2497 { 2498 HANDLE mutex; 2499 DWORD gotMutex; 2500 2501 mutex = CreateMutexA( NULL, FALSE, mutexname ); 2502 if( !mutex ) 2503 { 2504 return FALSE; 2505 } 2506 2507 gotMutex = WaitForSingleObject( mutex, INFINITE ); 2508 switch( gotMutex ) 2509 { 2510 case WAIT_ABANDONED: 2511 ReleaseMutex (mutex); 2512 CloseHandle (mutex); 2513 return 0; 2514 case WAIT_FAILED: 2515 case WAIT_TIMEOUT: 2516 return 0; 2517 } 2518 2519 return mutex; 2520 } 2521 2522 static 2523 void _dbus_global_unlock (HANDLE mutex) 2524 { 2525 ReleaseMutex (mutex); 2526 CloseHandle (mutex); 2527 } 2528 2529 // for proper cleanup in dbus-daemon 2530 static HANDLE hDBusDaemonMutex = NULL; 2531 static HANDLE hDBusSharedMem = NULL; 2532 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs 2533 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex"; 2534 // sync _dbus_get_autolaunch_address 2535 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex"; 2536 // mutex to determine if dbus-daemon is already started (per user) 2537 static const char *cDBusDaemonMutex = "DBusDaemonMutex"; 2538 // named shm for dbus adress info (per user) 2539 #ifdef _DEBUG 2540 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfoDebug"; 2541 #else 2542 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo"; 2543 #endif 2544 2545 2546 void 2547 _dbus_daemon_publish_session_bus_address (const char* address) 2548 { 2549 HANDLE lock; 2550 char *shared_addr = NULL; 2551 DWORD ret; 2552 2553 _dbus_assert (address); 2554 // before _dbus_global_lock to keep correct lock/release order 2555 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, cDBusDaemonMutex ); 2556 ret = WaitForSingleObject( hDBusDaemonMutex, 1000 ); 2557 if ( ret != WAIT_OBJECT_0 ) { 2558 _dbus_warn("Could not lock mutex %s (return code %ld). daemon already running? Bus address not published.\n", cDBusDaemonMutex, ret ); 2559 return; 2560 } 2561 2562 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs 2563 lock = _dbus_global_lock( cUniqueDBusInitMutex ); 2564 2565 // create shm 2566 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 2567 0, strlen( address ) + 1, cDBusDaemonAddressInfo ); 2568 _dbus_assert( hDBusSharedMem ); 2569 2570 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 ); 2571 2572 _dbus_assert (shared_addr); 2573 2574 strcpy( shared_addr, address); 2575 2576 // cleanup 2577 UnmapViewOfFile( shared_addr ); 2578 2579 _dbus_global_unlock( lock ); 2580 } 2581 2582 void 2583 _dbus_daemon_unpublish_session_bus_address (void) 2584 { 2585 HANDLE lock; 2586 2587 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs 2588 lock = _dbus_global_lock( cUniqueDBusInitMutex ); 2589 2590 CloseHandle( hDBusSharedMem ); 2591 2592 hDBusSharedMem = NULL; 2593 2594 ReleaseMutex( hDBusDaemonMutex ); 2595 2596 CloseHandle( hDBusDaemonMutex ); 2597 2598 hDBusDaemonMutex = NULL; 2599 2600 _dbus_global_unlock( lock ); 2601 } 2602 2603 static dbus_bool_t 2604 _dbus_get_autolaunch_shm (DBusString *address) 2605 { 2606 HANDLE sharedMem; 2607 char *shared_addr; 2608 int i; 2609 2610 // read shm 2611 for(i=0;i<20;++i) { 2612 // we know that dbus-daemon is available, so we wait until shm is available 2613 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, cDBusDaemonAddressInfo ); 2614 if( sharedMem == 0 ) 2615 Sleep( 100 ); 2616 if ( sharedMem != 0) 2617 break; 2618 } 2619 2620 if( sharedMem == 0 ) 2621 return FALSE; 2622 2623 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 ); 2624 2625 if( !shared_addr ) 2626 return FALSE; 2627 2628 _dbus_string_init( address ); 2629 2630 _dbus_string_append( address, shared_addr ); 2631 2632 // cleanup 2633 UnmapViewOfFile( shared_addr ); 2634 2635 CloseHandle( sharedMem ); 2636 2637 return TRUE; 2638 } 2639 2640 static dbus_bool_t 2641 _dbus_daemon_already_runs (DBusString *address) 2642 { 2643 HANDLE lock; 2644 HANDLE daemon; 2645 dbus_bool_t bRet = TRUE; 2646 2647 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs 2648 lock = _dbus_global_lock( cUniqueDBusInitMutex ); 2649 2650 // do checks 2651 daemon = CreateMutexA( NULL, FALSE, cDBusDaemonMutex ); 2652 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT) 2653 { 2654 ReleaseMutex (daemon); 2655 CloseHandle (daemon); 2656 2657 _dbus_global_unlock( lock ); 2658 return FALSE; 2659 } 2660 2661 // read shm 2662 bRet = _dbus_get_autolaunch_shm( address ); 2663 2664 // cleanup 2665 CloseHandle ( daemon ); 2666 2667 _dbus_global_unlock( lock ); 2668 2669 return bRet; 2670 } 2671 2672 dbus_bool_t 2673 _dbus_get_autolaunch_address (DBusString *address, 2674 DBusError *error) 2675 { 2676 HANDLE mutex; 2677 STARTUPINFOA si; 2678 PROCESS_INFORMATION pi; 2679 dbus_bool_t retval = FALSE; 2680 LPSTR lpFile; 2681 char dbus_exe_path[MAX_PATH]; 2682 char dbus_args[MAX_PATH * 2]; 2683 const char * daemon_name = DBUS_DAEMON_NAME ".exe"; 2684 2685 mutex = _dbus_global_lock ( cDBusAutolaunchMutex ); 2686 2687 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 2688 2689 if (_dbus_daemon_already_runs(address)) 2690 { 2691 _dbus_verbose("found already running dbus daemon\n"); 2692 retval = TRUE; 2693 goto out; 2694 } 2695 2696 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile)) 2697 { 2698 printf ("please add the path to %s to your PATH environment variable\n", daemon_name); 2699 printf ("or start the daemon manually\n\n"); 2700 goto out; 2701 } 2702 2703 // Create process 2704 ZeroMemory( &si, sizeof(si) ); 2705 si.cb = sizeof(si); 2706 ZeroMemory( &pi, sizeof(pi) ); 2707 2708 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session"); 2709 2710 // argv[i] = "--config-file=bus\\session.conf"; 2711 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args); 2712 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi)) 2713 { 2714 CloseHandle (pi.hThread); 2715 CloseHandle (pi.hProcess); 2716 retval = _dbus_get_autolaunch_shm( address ); 2717 } 2718 2719 if (retval == FALSE) 2720 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon"); 2721 2722 out: 2723 if (retval) 2724 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 2725 else 2726 _DBUS_ASSERT_ERROR_IS_SET (error); 2727 2728 _dbus_global_unlock (mutex); 2729 2730 return retval; 2731 } 2732 2733 2734 /** Makes the file readable by every user in the system. 2735 * 2736 * @param filename the filename 2737 * @param error error location 2738 * @returns #TRUE if the file's permissions could be changed. 2739 */ 2740 dbus_bool_t 2741 _dbus_make_file_world_readable(const DBusString *filename, 2742 DBusError *error) 2743 { 2744 // TODO 2745 return TRUE; 2746 } 2747 2748 /** 2749 * return the relocated DATADIR 2750 * 2751 * @returns relocated DATADIR static string 2752 */ 2753 2754 static const char * 2755 _dbus_windows_get_datadir (void) 2756 { 2757 return _dbus_replace_install_prefix(DBUS_DATADIR); 2758 } 2759 2760 #undef DBUS_DATADIR 2761 #define DBUS_DATADIR _dbus_windows_get_datadir () 2762 2763 2764 #define DBUS_STANDARD_SESSION_SERVICEDIR "/dbus-1/services" 2765 #define DBUS_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services" 2766 2767 /** 2768 * Returns the standard directories for a session bus to look for service 2769 * activation files 2770 * 2771 * On Windows this should be data directories: 2772 * 2773 * %CommonProgramFiles%/dbus 2774 * 2775 * and 2776 * 2777 * relocated DBUS_DATADIR 2778 * 2779 * @param dirs the directory list we are returning 2780 * @returns #FALSE on OOM 2781 */ 2782 2783 dbus_bool_t 2784 _dbus_get_standard_session_servicedirs (DBusList **dirs) 2785 { 2786 const char *common_progs; 2787 DBusString servicedir_path; 2788 2789 if (!_dbus_string_init (&servicedir_path)) 2790 return FALSE; 2791 2792 #ifdef DBUS_WINCE 2793 { 2794 /* On Windows CE, we adjust datadir dynamically to installation location. */ 2795 const char *data_dir = _dbus_getenv ("DBUS_DATADIR"); 2796 2797 if (data_dir != NULL) 2798 { 2799 if (!_dbus_string_append (&servicedir_path, data_dir)) 2800 goto oom; 2801 2802 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) 2803 goto oom; 2804 } 2805 } 2806 #else 2807 if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR)) 2808 goto oom; 2809 2810 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) 2811 goto oom; 2812 #endif 2813 2814 common_progs = _dbus_getenv ("CommonProgramFiles"); 2815 2816 if (common_progs != NULL) 2817 { 2818 if (!_dbus_string_append (&servicedir_path, common_progs)) 2819 goto oom; 2820 2821 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) 2822 goto oom; 2823 } 2824 2825 if (!_dbus_split_paths_and_append (&servicedir_path, 2826 DBUS_STANDARD_SESSION_SERVICEDIR, 2827 dirs)) 2828 goto oom; 2829 2830 _dbus_string_free (&servicedir_path); 2831 return TRUE; 2832 2833 oom: 2834 _dbus_string_free (&servicedir_path); 2835 return FALSE; 2836 } 2837 2838 /** 2839 * Returns the standard directories for a system bus to look for service 2840 * activation files 2841 * 2842 * On UNIX this should be the standard xdg freedesktop.org data directories: 2843 * 2844 * XDG_DATA_DIRS=${XDG_DATA_DIRS-/usr/local/share:/usr/share} 2845 * 2846 * and 2847 * 2848 * DBUS_DATADIR 2849 * 2850 * On Windows there is no system bus and this function can return nothing. 2851 * 2852 * @param dirs the directory list we are returning 2853 * @returns #FALSE on OOM 2854 */ 2855 2856 dbus_bool_t 2857 _dbus_get_standard_system_servicedirs (DBusList **dirs) 2858 { 2859 *dirs = NULL; 2860 return TRUE; 2861 } 2862 2863 _DBUS_DEFINE_GLOBAL_LOCK (atomic); 2864 2865 /** 2866 * Atomically increments an integer 2867 * 2868 * @param atomic pointer to the integer to increment 2869 * @returns the value before incrementing 2870 * 2871 */ 2872 dbus_int32_t 2873 _dbus_atomic_inc (DBusAtomic *atomic) 2874 { 2875 // +/- 1 is needed here! 2876 // no volatile argument with mingw 2877 return InterlockedIncrement (&atomic->value) - 1; 2878 } 2879 2880 /** 2881 * Atomically decrement an integer 2882 * 2883 * @param atomic pointer to the integer to decrement 2884 * @returns the value before decrementing 2885 * 2886 */ 2887 dbus_int32_t 2888 _dbus_atomic_dec (DBusAtomic *atomic) 2889 { 2890 // +/- 1 is needed here! 2891 // no volatile argument with mingw 2892 return InterlockedDecrement (&atomic->value) + 1; 2893 } 2894 2895 /** 2896 * Called when the bus daemon is signaled to reload its configuration; any 2897 * caches should be nuked. Of course any caches that need explicit reload 2898 * are probably broken, but c'est la vie. 2899 * 2900 * 2901 */ 2902 void 2903 _dbus_flush_caches (void) 2904 { 2905 } 2906 2907 /** 2908 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently 2909 * for Winsock so is abstracted) 2910 * 2911 * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK 2912 */ 2913 dbus_bool_t 2914 _dbus_get_is_errno_eagain_or_ewouldblock (void) 2915 { 2916 return errno == WSAEWOULDBLOCK; 2917 } 2918 2919 /** 2920 * return the absolute path of the dbus installation 2921 * 2922 * @param s buffer for installation path 2923 * @param len length of buffer 2924 * @returns #FALSE on failure 2925 */ 2926 static dbus_bool_t 2927 _dbus_get_install_root(char *prefix, int len) 2928 { 2929 //To find the prefix, we cut the filename and also \bin\ if present 2930 char* p = 0; 2931 int i; 2932 DWORD pathLength; 2933 char *lastSlash; 2934 SetLastError( 0 ); 2935 pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len); 2936 if ( pathLength == 0 || GetLastError() != 0 ) { 2937 *prefix = '\0'; 2938 return FALSE; 2939 } 2940 lastSlash = _mbsrchr(prefix, '\\'); 2941 if (lastSlash == NULL) { 2942 *prefix = '\0'; 2943 return FALSE; 2944 } 2945 //cut off binary name 2946 lastSlash[1] = 0; 2947 2948 //cut possible "\\bin" 2949 2950 //this fails if we are in a double-byte system codepage and the 2951 //folder's name happens to end with the *bytes* 2952 //"\\bin"... (I.e. the second byte of some Han character and then 2953 //the Latin "bin", but that is not likely I think... 2954 if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0) 2955 lastSlash[-3] = 0; 2956 else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0) 2957 lastSlash[-9] = 0; 2958 else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0) 2959 lastSlash[-11] = 0; 2960 2961 return TRUE; 2962 } 2963 2964 /** 2965 find config file either from installation or build root according to 2966 the following path layout 2967 install-root/ 2968 bin/dbus-daemon[d].exe 2969 etc/<config-file>.conf *or* etc/dbus-1/<config-file>.conf 2970 (the former above is what dbus4win uses, the latter above is 2971 what a "normal" Unix-style "make install" uses) 2972 2973 build-root/ 2974 bin/dbus-daemon[d].exe 2975 bus/<config-file>.conf 2976 */ 2977 dbus_bool_t 2978 _dbus_get_config_file_name(DBusString *config_file, char *s) 2979 { 2980 char path[MAX_PATH*2]; 2981 int path_size = sizeof(path); 2982 2983 if (!_dbus_get_install_root(path,path_size)) 2984 return FALSE; 2985 2986 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2) 2987 return FALSE; 2988 strcat(path,"etc\\"); 2989 strcat(path,s); 2990 if (_dbus_file_exists(path)) 2991 { 2992 // find path from executable 2993 if (!_dbus_string_append (config_file, path)) 2994 return FALSE; 2995 } 2996 else 2997 { 2998 if (!_dbus_get_install_root(path,path_size)) 2999 return FALSE; 3000 if(strlen(s) + 11 + strlen(path) > sizeof(path)-2) 3001 return FALSE; 3002 strcat(path,"etc\\dbus-1\\"); 3003 strcat(path,s); 3004 3005 if (_dbus_file_exists(path)) 3006 { 3007 if (!_dbus_string_append (config_file, path)) 3008 return FALSE; 3009 } 3010 else 3011 { 3012 if (!_dbus_get_install_root(path,path_size)) 3013 return FALSE; 3014 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2) 3015 return FALSE; 3016 strcat(path,"bus\\"); 3017 strcat(path,s); 3018 3019 if (_dbus_file_exists(path)) 3020 { 3021 if (!_dbus_string_append (config_file, path)) 3022 return FALSE; 3023 } 3024 } 3025 } 3026 return TRUE; 3027 } 3028 3029 /** 3030 * Append the absolute path of the system.conf file 3031 * (there is no system bus on Windows so this can just 3032 * return FALSE and print a warning or something) 3033 * 3034 * @param str the string to append to 3035 * @returns #FALSE if no memory 3036 */ 3037 dbus_bool_t 3038 _dbus_append_system_config_file (DBusString *str) 3039 { 3040 return _dbus_get_config_file_name(str, "system.conf"); 3041 } 3042 3043 /** 3044 * Append the absolute path of the session.conf file. 3045 * 3046 * @param str the string to append to 3047 * @returns #FALSE if no memory 3048 */ 3049 dbus_bool_t 3050 _dbus_append_session_config_file (DBusString *str) 3051 { 3052 return _dbus_get_config_file_name(str, "session.conf"); 3053 } 3054 3055 /* See comment in dbus-sysdeps-unix.c */ 3056 dbus_bool_t 3057 _dbus_lookup_session_address (dbus_bool_t *supported, 3058 DBusString *address, 3059 DBusError *error) 3060 { 3061 /* Probably fill this in with something based on COM? */ 3062 *supported = FALSE; 3063 return TRUE; 3064 } 3065 3066 /** 3067 * Appends the directory in which a keyring for the given credentials 3068 * should be stored. The credentials should have either a Windows or 3069 * UNIX user in them. The directory should be an absolute path. 3070 * 3071 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably 3072 * be something else, since the dotfile convention is not normal on Windows. 3073 * 3074 * @param directory string to append directory to 3075 * @param credentials credentials the directory should be for 3076 * 3077 * @returns #FALSE on no memory 3078 */ 3079 dbus_bool_t 3080 _dbus_append_keyring_directory_for_credentials (DBusString *directory, 3081 DBusCredentials *credentials) 3082 { 3083 DBusString homedir; 3084 DBusString dotdir; 3085 dbus_uid_t uid; 3086 const char *homepath; 3087 const char *homedrive; 3088 3089 _dbus_assert (credentials != NULL); 3090 _dbus_assert (!_dbus_credentials_are_anonymous (credentials)); 3091 3092 if (!_dbus_string_init (&homedir)) 3093 return FALSE; 3094 3095 homedrive = _dbus_getenv("HOMEDRIVE"); 3096 if (homedrive != NULL && *homedrive != '\0') 3097 { 3098 _dbus_string_append(&homedir,homedrive); 3099 } 3100 3101 homepath = _dbus_getenv("HOMEPATH"); 3102 if (homepath != NULL && *homepath != '\0') 3103 { 3104 _dbus_string_append(&homedir,homepath); 3105 } 3106 3107 #ifdef DBUS_BUILD_TESTS 3108 { 3109 const char *override; 3110 3111 override = _dbus_getenv ("DBUS_TEST_HOMEDIR"); 3112 if (override != NULL && *override != '\0') 3113 { 3114 _dbus_string_set_length (&homedir, 0); 3115 if (!_dbus_string_append (&homedir, override)) 3116 goto failed; 3117 3118 _dbus_verbose ("Using fake homedir for testing: %s\n", 3119 _dbus_string_get_const_data (&homedir)); 3120 } 3121 else 3122 { 3123 static dbus_bool_t already_warned = FALSE; 3124 if (!already_warned) 3125 { 3126 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n"); 3127 already_warned = TRUE; 3128 } 3129 } 3130 } 3131 #endif 3132 3133 #ifdef DBUS_WINCE 3134 /* It's not possible to create a .something directory in Windows CE 3135 using the file explorer. */ 3136 #define KEYRING_DIR "dbus-keyrings" 3137 #else 3138 #define KEYRING_DIR ".dbus-keyrings" 3139 #endif 3140 3141 _dbus_string_init_const (&dotdir, KEYRING_DIR); 3142 if (!_dbus_concat_dir_and_file (&homedir, 3143 &dotdir)) 3144 goto failed; 3145 3146 if (!_dbus_string_copy (&homedir, 0, 3147 directory, _dbus_string_get_length (directory))) { 3148 goto failed; 3149 } 3150 3151 _dbus_string_free (&homedir); 3152 return TRUE; 3153 3154 failed: 3155 _dbus_string_free (&homedir); 3156 return FALSE; 3157 } 3158 3159 /** Checks if a file exists 3160 * 3161 * @param file full path to the file 3162 * @returns #TRUE if file exists 3163 */ 3164 dbus_bool_t 3165 _dbus_file_exists (const char *file) 3166 { 3167 DWORD attributes = GetFileAttributesA (file); 3168 3169 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND) 3170 return TRUE; 3171 else 3172 return FALSE; 3173 } 3174 3175 /** 3176 * A wrapper around strerror() because some platforms 3177 * may be lame and not have strerror(). 3178 * 3179 * @param error_number errno. 3180 * @returns error description. 3181 */ 3182 const char* 3183 _dbus_strerror (int error_number) 3184 { 3185 #ifdef DBUS_WINCE 3186 // TODO 3187 return "unknown"; 3188 #else 3189 const char *msg; 3190 3191 switch (error_number) 3192 { 3193 case WSAEINTR: 3194 return "Interrupted function call"; 3195 case WSAEACCES: 3196 return "Permission denied"; 3197 case WSAEFAULT: 3198 return "Bad address"; 3199 case WSAEINVAL: 3200 return "Invalid argument"; 3201 case WSAEMFILE: 3202 return "Too many open files"; 3203 case WSAEWOULDBLOCK: 3204 return "Resource temporarily unavailable"; 3205 case WSAEINPROGRESS: 3206 return "Operation now in progress"; 3207 case WSAEALREADY: 3208 return "Operation already in progress"; 3209 case WSAENOTSOCK: 3210 return "Socket operation on nonsocket"; 3211 case WSAEDESTADDRREQ: 3212 return "Destination address required"; 3213 case WSAEMSGSIZE: 3214 return "Message too long"; 3215 case WSAEPROTOTYPE: 3216 return "Protocol wrong type for socket"; 3217 case WSAENOPROTOOPT: 3218 return "Bad protocol option"; 3219 case WSAEPROTONOSUPPORT: 3220 return "Protocol not supported"; 3221 case WSAESOCKTNOSUPPORT: 3222 return "Socket type not supported"; 3223 case WSAEOPNOTSUPP: 3224 return "Operation not supported"; 3225 case WSAEPFNOSUPPORT: 3226 return "Protocol family not supported"; 3227 case WSAEAFNOSUPPORT: 3228 return "Address family not supported by protocol family"; 3229 case WSAEADDRINUSE: 3230 return "Address already in use"; 3231 case WSAEADDRNOTAVAIL: 3232 return "Cannot assign requested address"; 3233 case WSAENETDOWN: 3234 return "Network is down"; 3235 case WSAENETUNREACH: 3236 return "Network is unreachable"; 3237 case WSAENETRESET: 3238 return "Network dropped connection on reset"; 3239 case WSAECONNABORTED: 3240 return "Software caused connection abort"; 3241 case WSAECONNRESET: 3242 return "Connection reset by peer"; 3243 case WSAENOBUFS: 3244 return "No buffer space available"; 3245 case WSAEISCONN: 3246 return "Socket is already connected"; 3247 case WSAENOTCONN: 3248 return "Socket is not connected"; 3249 case WSAESHUTDOWN: 3250 return "Cannot send after socket shutdown"; 3251 case WSAETIMEDOUT: 3252 return "Connection timed out"; 3253 case WSAECONNREFUSED: 3254 return "Connection refused"; 3255 case WSAEHOSTDOWN: 3256 return "Host is down"; 3257 case WSAEHOSTUNREACH: 3258 return "No route to host"; 3259 case WSAEPROCLIM: 3260 return "Too many processes"; 3261 case WSAEDISCON: 3262 return "Graceful shutdown in progress"; 3263 case WSATYPE_NOT_FOUND: 3264 return "Class type not found"; 3265 case WSAHOST_NOT_FOUND: 3266 return "Host not found"; 3267 case WSATRY_AGAIN: 3268 return "Nonauthoritative host not found"; 3269 case WSANO_RECOVERY: 3270 return "This is a nonrecoverable error"; 3271 case WSANO_DATA: 3272 return "Valid name, no data record of requested type"; 3273 case WSA_INVALID_HANDLE: 3274 return "Specified event object handle is invalid"; 3275 case WSA_INVALID_PARAMETER: 3276 return "One or more parameters are invalid"; 3277 case WSA_IO_INCOMPLETE: 3278 return "Overlapped I/O event object not in signaled state"; 3279 case WSA_IO_PENDING: 3280 return "Overlapped operations will complete later"; 3281 case WSA_NOT_ENOUGH_MEMORY: 3282 return "Insufficient memory available"; 3283 case WSA_OPERATION_ABORTED: 3284 return "Overlapped operation aborted"; 3285 #ifdef WSAINVALIDPROCTABLE 3286 3287 case WSAINVALIDPROCTABLE: 3288 return "Invalid procedure table from service provider"; 3289 #endif 3290 #ifdef WSAINVALIDPROVIDER 3291 3292 case WSAINVALIDPROVIDER: 3293 return "Invalid service provider version number"; 3294 #endif 3295 #ifdef WSAPROVIDERFAILEDINIT 3296 3297 case WSAPROVIDERFAILEDINIT: 3298 return "Unable to initialize a service provider"; 3299 #endif 3300 3301 case WSASYSCALLFAILURE: 3302 return "System call failure"; 3303 } 3304 msg = strerror (error_number); 3305 if (msg == NULL) 3306 msg = "unknown"; 3307 3308 return msg; 3309 #endif //DBUS_WINCE 3310 } 3311 3312 /** 3313 * Assigns an error name and message corresponding to a Win32 error 3314 * code to a DBusError. Does nothing if error is #NULL. 3315 * 3316 * @param error the error. 3317 * @param code the Win32 error code 3318 */ 3319 void 3320 _dbus_win_set_error_from_win_error (DBusError *error, 3321 int code) 3322 { 3323 char *msg; 3324 3325 /* As we want the English message, use the A API */ 3326 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER | 3327 FORMAT_MESSAGE_IGNORE_INSERTS | 3328 FORMAT_MESSAGE_FROM_SYSTEM, 3329 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US), 3330 (LPSTR) &msg, 0, NULL); 3331 if (msg) 3332 { 3333 char *msg_copy; 3334 3335 msg_copy = dbus_malloc (strlen (msg)); 3336 strcpy (msg_copy, msg); 3337 LocalFree (msg); 3338 3339 dbus_set_error (error, "win32.error", "%s", msg_copy); 3340 } 3341 else 3342 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code); 3343 } 3344 3345 void 3346 _dbus_win_warn_win_error (const char *message, 3347 int code) 3348 { 3349 DBusError error; 3350 3351 dbus_error_init (&error); 3352 _dbus_win_set_error_from_win_error (&error, code); 3353 _dbus_warn ("%s: %s\n", message, error.message); 3354 dbus_error_free (&error); 3355 } 3356 3357 /** 3358 * Removes a directory; Directory must be empty 3359 * 3360 * @param filename directory filename 3361 * @param error initialized error object 3362 * @returns #TRUE on success 3363 */ 3364 dbus_bool_t 3365 _dbus_delete_directory (const DBusString *filename, 3366 DBusError *error) 3367 { 3368 const char *filename_c; 3369 3370 _DBUS_ASSERT_ERROR_IS_CLEAR (error); 3371 3372 filename_c = _dbus_string_get_const_data (filename); 3373 3374 if (RemoveDirectoryA (filename_c) == 0) 3375 { 3376 char *emsg = _dbus_win_error_string (GetLastError ()); 3377 dbus_set_error (error, _dbus_win_error_from_last_error (), 3378 "Failed to remove directory %s: %s", 3379 filename_c, emsg); 3380 _dbus_win_free_error_string (emsg); 3381 return FALSE; 3382 } 3383 3384 return TRUE; 3385 } 3386 3387 /** @} end of sysdeps-win */ 3388 /* tests in dbus-sysdeps-util.c */ 3389 3390
