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 Peter Kümmel <syntheticpp@gmx.net>
8 * Copyright (C) 2006 Christian Ehrlicher <ch.ehrlicher@gmx.de>
9 * Copyright (C) 2006-2010 Ralf Habacker <ralf.habacker@freenet.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-sha.h"
41 #include "dbus-sysdeps.h"
42 #include "dbus-threads.h"
43 #include "dbus-protocol.h"
44 #include "dbus-string.h"
45 #include "dbus-sysdeps.h"
46 #include "dbus-sysdeps-win.h"
47 #include "dbus-protocol.h"
48 #include "dbus-hash.h"
49 #include "dbus-sockets-win.h"
50 #include "dbus-list.h"
51 #include "dbus-nonce.h"
52 #include "dbus-credentials.h"
53
54 #include <windows.h>
55 #include <ws2tcpip.h>
56 #include <wincrypt.h>
57
58 /* Declarations missing in mingw's headers */
59 extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid);
60 extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid);
61
62 #include <stdio.h>
63
64 #include <string.h>
65 #if HAVE_ERRNO_H
66 #include <errno.h>
67 #endif
68 #ifndef DBUS_WINCE
69 #include <mbstring.h>
70 #include <sys/stat.h>
71 #include <sys/types.h>
72 #endif
73
74 #ifdef HAVE_WS2TCPIP_H
75 /* getaddrinfo for Windows CE (and Windows). */
76 #include <ws2tcpip.h>
77 #endif
78
79 #ifdef HAVE_WSPIAPI_H
80 // needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo)
81 #ifdef __GNUC__
82 #define _inline
83 #include "wspiapi.h"
84 #else
85 #include <wspiapi.h>
86 #endif
87 #endif // HAVE_WSPIAPI_H
88
89 #ifndef O_BINARY
90 #define O_BINARY 0
91 #endif
92
93 typedef int socklen_t;
94
95
96 void
_dbus_win_set_errno(int err)97 _dbus_win_set_errno (int err)
98 {
99 #ifdef DBUS_WINCE
100 SetLastError (err);
101 #else
102 errno = err;
103 #endif
104 }
105
106
107 /* Convert GetLastError() to a dbus error. */
108 const char*
_dbus_win_error_from_last_error(void)109 _dbus_win_error_from_last_error (void)
110 {
111 switch (GetLastError())
112 {
113 case 0:
114 return DBUS_ERROR_FAILED;
115
116 case ERROR_NO_MORE_FILES:
117 case ERROR_TOO_MANY_OPEN_FILES:
118 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
119
120 case ERROR_ACCESS_DENIED:
121 case ERROR_CANNOT_MAKE:
122 return DBUS_ERROR_ACCESS_DENIED;
123
124 case ERROR_NOT_ENOUGH_MEMORY:
125 return DBUS_ERROR_NO_MEMORY;
126
127 case ERROR_FILE_EXISTS:
128 return DBUS_ERROR_FILE_EXISTS;
129
130 case ERROR_FILE_NOT_FOUND:
131 case ERROR_PATH_NOT_FOUND:
132 return DBUS_ERROR_FILE_NOT_FOUND;
133 }
134
135 return DBUS_ERROR_FAILED;
136 }
137
138
139 char*
_dbus_win_error_string(int error_number)140 _dbus_win_error_string (int error_number)
141 {
142 char *msg;
143
144 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
145 FORMAT_MESSAGE_IGNORE_INSERTS |
146 FORMAT_MESSAGE_FROM_SYSTEM,
147 NULL, error_number, 0,
148 (LPSTR) &msg, 0, NULL);
149
150 if (msg[strlen (msg) - 1] == '\n')
151 msg[strlen (msg) - 1] = '\0';
152 if (msg[strlen (msg) - 1] == '\r')
153 msg[strlen (msg) - 1] = '\0';
154
155 return msg;
156 }
157
158 void
_dbus_win_free_error_string(char * string)159 _dbus_win_free_error_string (char *string)
160 {
161 LocalFree (string);
162 }
163
164 /**
165 * Socket interface
166 *
167 */
168
169 /**
170 * Thin wrapper around the read() system call that appends
171 * the data it reads to the DBusString buffer. It appends
172 * up to the given count, and returns the same value
173 * and same errno as read(). The only exception is that
174 * _dbus_read_socket() handles EINTR for you.
175 * _dbus_read_socket() can return ENOMEM, even though
176 * regular UNIX read doesn't.
177 *
178 * @param fd the file descriptor to read from
179 * @param buffer the buffer to append data to
180 * @param count the amount of data to read
181 * @returns the number of bytes read or -1
182 */
183
184 int
_dbus_read_socket(int fd,DBusString * buffer,int count)185 _dbus_read_socket (int fd,
186 DBusString *buffer,
187 int count)
188 {
189 int bytes_read;
190 int start;
191 char *data;
192
193 _dbus_assert (count >= 0);
194
195 start = _dbus_string_get_length (buffer);
196
197 if (!_dbus_string_lengthen (buffer, count))
198 {
199 _dbus_win_set_errno (ENOMEM);
200 return -1;
201 }
202
203 data = _dbus_string_get_data_len (buffer, start, count);
204
205 again:
206
207 _dbus_verbose ("recv: count=%d fd=%d\n", count, fd);
208 bytes_read = recv (fd, data, count, 0);
209
210 if (bytes_read == SOCKET_ERROR)
211 {
212 DBUS_SOCKET_SET_ERRNO();
213 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno);
214 bytes_read = -1;
215 }
216 else
217 _dbus_verbose ("recv: = %d\n", bytes_read);
218
219 if (bytes_read < 0)
220 {
221 if (errno == EINTR)
222 goto again;
223 else
224 {
225 /* put length back (note that this doesn't actually realloc anything) */
226 _dbus_string_set_length (buffer, start);
227 return -1;
228 }
229 }
230 else
231 {
232 /* put length back (doesn't actually realloc) */
233 _dbus_string_set_length (buffer, start + bytes_read);
234
235 #if 0
236 if (bytes_read > 0)
237 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
238 #endif
239
240 return bytes_read;
241 }
242 }
243
244 /**
245 * Thin wrapper around the write() system call that writes a part of a
246 * DBusString and handles EINTR for you.
247 *
248 * @param fd the file descriptor to write
249 * @param buffer the buffer to write data from
250 * @param start the first byte in the buffer to write
251 * @param len the number of bytes to try to write
252 * @returns the number of bytes written or -1 on error
253 */
254 int
_dbus_write_socket(int fd,const DBusString * buffer,int start,int len)255 _dbus_write_socket (int fd,
256 const DBusString *buffer,
257 int start,
258 int len)
259 {
260 const char *data;
261 int bytes_written;
262
263 data = _dbus_string_get_const_data_len (buffer, start, len);
264
265 again:
266
267 _dbus_verbose ("send: len=%d fd=%d\n", len, fd);
268 bytes_written = send (fd, data, len, 0);
269
270 if (bytes_written == SOCKET_ERROR)
271 {
272 DBUS_SOCKET_SET_ERRNO();
273 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ());
274 bytes_written = -1;
275 }
276 else
277 _dbus_verbose ("send: = %d\n", bytes_written);
278
279 if (bytes_written < 0 && errno == EINTR)
280 goto again;
281
282 #if 0
283 if (bytes_written > 0)
284 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
285 #endif
286
287 return bytes_written;
288 }
289
290
291 /**
292 * Closes a file descriptor.
293 *
294 * @param fd the file descriptor
295 * @param error error object
296 * @returns #FALSE if error set
297 */
298 dbus_bool_t
_dbus_close_socket(int fd,DBusError * error)299 _dbus_close_socket (int fd,
300 DBusError *error)
301 {
302 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
303
304 again:
305 if (closesocket (fd) == SOCKET_ERROR)
306 {
307 DBUS_SOCKET_SET_ERRNO ();
308
309 if (errno == EINTR)
310 goto again;
311
312 dbus_set_error (error, _dbus_error_from_errno (errno),
313 "Could not close socket: socket=%d, , %s",
314 fd, _dbus_strerror_from_errno ());
315 return FALSE;
316 }
317 _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd);
318
319 return TRUE;
320 }
321
322 /**
323 * Sets the file descriptor to be close
324 * on exec. Should be called for all file
325 * descriptors in D-Bus code.
326 *
327 * @param fd the file descriptor
328 */
329 void
_dbus_fd_set_close_on_exec(intptr_t handle)330 _dbus_fd_set_close_on_exec (intptr_t handle)
331 {
332 if ( !SetHandleInformation( (HANDLE) handle,
333 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE,
334 0 /*disable both flags*/ ) )
335 {
336 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError());
337 }
338 }
339
340 /**
341 * Sets a file descriptor to be nonblocking.
342 *
343 * @param fd the file descriptor.
344 * @param error address of error location.
345 * @returns #TRUE on success.
346 */
347 dbus_bool_t
_dbus_set_fd_nonblocking(int handle,DBusError * error)348 _dbus_set_fd_nonblocking (int handle,
349 DBusError *error)
350 {
351 u_long one = 1;
352
353 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
354
355 if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR)
356 {
357 DBUS_SOCKET_SET_ERRNO ();
358 dbus_set_error (error, _dbus_error_from_errno (errno),
359 "Failed to set socket %d:%d to nonblocking: %s", handle,
360 _dbus_strerror_from_errno ());
361 return FALSE;
362 }
363
364 return TRUE;
365 }
366
367
368 /**
369 * Like _dbus_write() but will use writev() if possible
370 * to write both buffers in sequence. The return value
371 * is the number of bytes written in the first buffer,
372 * plus the number written in the second. If the first
373 * buffer is written successfully and an error occurs
374 * writing the second, the number of bytes in the first
375 * is returned (i.e. the error is ignored), on systems that
376 * don't have writev. Handles EINTR for you.
377 * The second buffer may be #NULL.
378 *
379 * @param fd the file descriptor
380 * @param buffer1 first buffer
381 * @param start1 first byte to write in first buffer
382 * @param len1 number of bytes to write from first buffer
383 * @param buffer2 second buffer, or #NULL
384 * @param start2 first byte to write in second buffer
385 * @param len2 number of bytes to write in second buffer
386 * @returns total bytes written from both buffers, or -1 on error
387 */
388 int
_dbus_write_socket_two(int fd,const DBusString * buffer1,int start1,int len1,const DBusString * buffer2,int start2,int len2)389 _dbus_write_socket_two (int fd,
390 const DBusString *buffer1,
391 int start1,
392 int len1,
393 const DBusString *buffer2,
394 int start2,
395 int len2)
396 {
397 WSABUF vectors[2];
398 const char *data1;
399 const char *data2;
400 int rc;
401 DWORD bytes_written;
402
403 _dbus_assert (buffer1 != NULL);
404 _dbus_assert (start1 >= 0);
405 _dbus_assert (start2 >= 0);
406 _dbus_assert (len1 >= 0);
407 _dbus_assert (len2 >= 0);
408
409
410 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
411
412 if (buffer2 != NULL)
413 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
414 else
415 {
416 data2 = NULL;
417 start2 = 0;
418 len2 = 0;
419 }
420
421 vectors[0].buf = (char*) data1;
422 vectors[0].len = len1;
423 vectors[1].buf = (char*) data2;
424 vectors[1].len = len2;
425
426 again:
427
428 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd);
429 rc = WSASend (fd,
430 vectors,
431 data2 ? 2 : 1,
432 &bytes_written,
433 0,
434 NULL,
435 NULL);
436
437 if (rc == SOCKET_ERROR)
438 {
439 DBUS_SOCKET_SET_ERRNO ();
440 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ());
441 bytes_written = -1;
442 }
443 else
444 _dbus_verbose ("WSASend: = %ld\n", bytes_written);
445
446 if (bytes_written < 0 && errno == EINTR)
447 goto again;
448
449 return bytes_written;
450 }
451
452 dbus_bool_t
_dbus_socket_is_invalid(int fd)453 _dbus_socket_is_invalid (int fd)
454 {
455 return fd == INVALID_SOCKET ? TRUE : FALSE;
456 }
457
458 #if 0
459
460 /**
461 * Opens the client side of a Windows named pipe. The connection D-BUS
462 * file descriptor index is returned. It is set up as nonblocking.
463 *
464 * @param path the path to named pipe socket
465 * @param error return location for error code
466 * @returns connection D-BUS file descriptor or -1 on error
467 */
468 int
469 _dbus_connect_named_pipe (const char *path,
470 DBusError *error)
471 {
472 _dbus_assert_not_reached ("not implemented");
473 }
474
475 #endif
476
477
478
479 void
_dbus_win_startup_winsock(void)480 _dbus_win_startup_winsock (void)
481 {
482 /* Straight from MSDN, deuglified */
483
484 static dbus_bool_t beenhere = FALSE;
485
486 WORD wVersionRequested;
487 WSADATA wsaData;
488 int err;
489
490 if (beenhere)
491 return;
492
493 wVersionRequested = MAKEWORD (2, 0);
494
495 err = WSAStartup (wVersionRequested, &wsaData);
496 if (err != 0)
497 {
498 _dbus_assert_not_reached ("Could not initialize WinSock");
499 _dbus_abort ();
500 }
501
502 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL
503 * supports versions greater than 2.0 in addition to 2.0, it will
504 * still return 2.0 in wVersion since that is the version we
505 * requested.
506 */
507 if (LOBYTE (wsaData.wVersion) != 2 ||
508 HIBYTE (wsaData.wVersion) != 0)
509 {
510 _dbus_assert_not_reached ("No usable WinSock found");
511 _dbus_abort ();
512 }
513
514 beenhere = TRUE;
515 }
516
517
518
519
520
521
522
523
524
525 /************************************************************************
526
527 UTF / string code
528
529 ************************************************************************/
530
531 /**
532 * Measure the message length without terminating nul
533 */
_dbus_printf_string_upper_bound(const char * format,va_list args)534 int _dbus_printf_string_upper_bound (const char *format,
535 va_list args)
536 {
537 /* MSVCRT's vsnprintf semantics are a bit different */
538 char buf[1024];
539 int bufsize;
540 int len;
541
542 bufsize = sizeof (buf);
543 len = _vsnprintf (buf, bufsize - 1, format, args);
544
545 while (len == -1) /* try again */
546 {
547 char *p;
548
549 bufsize *= 2;
550
551 p = malloc (bufsize);
552
553 if (p == NULL)
554 return -1;
555
556 len = _vsnprintf (p, bufsize - 1, format, args);
557 free (p);
558 }
559
560 return len;
561 }
562
563
564 /**
565 * Returns the UTF-16 form of a UTF-8 string. The result should be
566 * freed with dbus_free() when no longer needed.
567 *
568 * @param str the UTF-8 string
569 * @param error return location for error code
570 */
571 wchar_t *
_dbus_win_utf8_to_utf16(const char * str,DBusError * error)572 _dbus_win_utf8_to_utf16 (const char *str,
573 DBusError *error)
574 {
575 DBusString s;
576 int n;
577 wchar_t *retval;
578
579 _dbus_string_init_const (&s, str);
580
581 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s)))
582 {
583 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8");
584 return NULL;
585 }
586
587 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
588
589 if (n == 0)
590 {
591 _dbus_win_set_error_from_win_error (error, GetLastError ());
592 return NULL;
593 }
594
595 retval = dbus_new (wchar_t, n);
596
597 if (!retval)
598 {
599 _DBUS_SET_OOM (error);
600 return NULL;
601 }
602
603 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n)
604 {
605 dbus_free (retval);
606 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency");
607 return NULL;
608 }
609
610 return retval;
611 }
612
613 /**
614 * Returns the UTF-8 form of a UTF-16 string. The result should be
615 * freed with dbus_free() when no longer needed.
616 *
617 * @param str the UTF-16 string
618 * @param error return location for error code
619 */
620 char *
_dbus_win_utf16_to_utf8(const wchar_t * str,DBusError * error)621 _dbus_win_utf16_to_utf8 (const wchar_t *str,
622 DBusError *error)
623 {
624 int n;
625 char *retval;
626
627 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
628
629 if (n == 0)
630 {
631 _dbus_win_set_error_from_win_error (error, GetLastError ());
632 return NULL;
633 }
634
635 retval = dbus_malloc (n);
636
637 if (!retval)
638 {
639 _DBUS_SET_OOM (error);
640 return NULL;
641 }
642
643 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n)
644 {
645 dbus_free (retval);
646 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency");
647 return NULL;
648 }
649
650 return retval;
651 }
652
653
654
655
656
657
658 /************************************************************************
659
660
661 ************************************************************************/
662
663 dbus_bool_t
_dbus_win_account_to_sid(const wchar_t * waccount,void ** ppsid,DBusError * error)664 _dbus_win_account_to_sid (const wchar_t *waccount,
665 void **ppsid,
666 DBusError *error)
667 {
668 dbus_bool_t retval = FALSE;
669 DWORD sid_length, wdomain_length;
670 SID_NAME_USE use;
671 wchar_t *wdomain;
672
673 *ppsid = NULL;
674
675 sid_length = 0;
676 wdomain_length = 0;
677 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length,
678 NULL, &wdomain_length, &use) &&
679 GetLastError () != ERROR_INSUFFICIENT_BUFFER)
680 {
681 _dbus_win_set_error_from_win_error (error, GetLastError ());
682 return FALSE;
683 }
684
685 *ppsid = dbus_malloc (sid_length);
686 if (!*ppsid)
687 {
688 _DBUS_SET_OOM (error);
689 return FALSE;
690 }
691
692 wdomain = dbus_new (wchar_t, wdomain_length);
693 if (!wdomain)
694 {
695 _DBUS_SET_OOM (error);
696 goto out1;
697 }
698
699 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length,
700 wdomain, &wdomain_length, &use))
701 {
702 _dbus_win_set_error_from_win_error (error, GetLastError ());
703 goto out2;
704 }
705
706 if (!IsValidSid ((PSID) *ppsid))
707 {
708 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID");
709 goto out2;
710 }
711
712 retval = TRUE;
713
714 out2:
715 dbus_free (wdomain);
716 out1:
717 if (!retval)
718 {
719 dbus_free (*ppsid);
720 *ppsid = NULL;
721 }
722
723 return retval;
724 }
725
726 /** @} end of sysdeps-win */
727
728
729 /**
730 * The only reason this is separate from _dbus_getpid() is to allow it
731 * on Windows for logging but not for other purposes.
732 *
733 * @returns process ID to put in log messages
734 */
735 unsigned long
_dbus_pid_for_log(void)736 _dbus_pid_for_log (void)
737 {
738 return _dbus_getpid ();
739 }
740
741
742 #ifndef DBUS_WINCE
743 /** Gets our SID
744 * @param points to sid buffer, need to be freed with LocalFree()
745 * @returns process sid
746 */
747 static dbus_bool_t
_dbus_getsid(char ** sid)748 _dbus_getsid(char **sid)
749 {
750 HANDLE process_token = INVALID_HANDLE_VALUE;
751 TOKEN_USER *token_user = NULL;
752 DWORD n;
753 PSID psid;
754 int retval = FALSE;
755
756 if (!OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &process_token))
757 {
758 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ());
759 goto failed;
760 }
761 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n)
762 && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
763 || (token_user = alloca (n)) == NULL
764 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n))
765 {
766 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ());
767 goto failed;
768 }
769 psid = token_user->User.Sid;
770 if (!IsValidSid (psid))
771 {
772 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
773 goto failed;
774 }
775 if (!ConvertSidToStringSidA (psid, sid))
776 {
777 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
778 goto failed;
779 }
780 //okay:
781 retval = TRUE;
782
783 failed:
784 if (process_token != INVALID_HANDLE_VALUE)
785 CloseHandle (process_token);
786
787 _dbus_verbose("_dbus_getsid() returns %d\n",retval);
788 return retval;
789 }
790 #endif
791
792 /************************************************************************
793
794 pipes
795
796 ************************************************************************/
797
798 /**
799 * Creates a full-duplex pipe (as in socketpair()).
800 * Sets both ends of the pipe nonblocking.
801 *
802 * @param fd1 return location for one end
803 * @param fd2 return location for the other end
804 * @param blocking #TRUE if pipe should be blocking
805 * @param error error return
806 * @returns #FALSE on failure (if error is set)
807 */
808 dbus_bool_t
_dbus_full_duplex_pipe(int * fd1,int * fd2,dbus_bool_t blocking,DBusError * error)809 _dbus_full_duplex_pipe (int *fd1,
810 int *fd2,
811 dbus_bool_t blocking,
812 DBusError *error)
813 {
814 SOCKET temp, socket1 = -1, socket2 = -1;
815 struct sockaddr_in saddr;
816 int len;
817 u_long arg;
818
819 _dbus_win_startup_winsock ();
820
821 temp = socket (AF_INET, SOCK_STREAM, 0);
822 if (temp == INVALID_SOCKET)
823 {
824 DBUS_SOCKET_SET_ERRNO ();
825 goto out0;
826 }
827
828 _DBUS_ZERO (saddr);
829 saddr.sin_family = AF_INET;
830 saddr.sin_port = 0;
831 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
832
833 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR)
834 {
835 DBUS_SOCKET_SET_ERRNO ();
836 goto out0;
837 }
838
839 if (listen (temp, 1) == SOCKET_ERROR)
840 {
841 DBUS_SOCKET_SET_ERRNO ();
842 goto out0;
843 }
844
845 len = sizeof (saddr);
846 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR)
847 {
848 DBUS_SOCKET_SET_ERRNO ();
849 goto out0;
850 }
851
852 socket1 = socket (AF_INET, SOCK_STREAM, 0);
853 if (socket1 == INVALID_SOCKET)
854 {
855 DBUS_SOCKET_SET_ERRNO ();
856 goto out0;
857 }
858
859 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR)
860 {
861 DBUS_SOCKET_SET_ERRNO ();
862 goto out1;
863 }
864
865 socket2 = accept (temp, (struct sockaddr *) &saddr, &len);
866 if (socket2 == INVALID_SOCKET)
867 {
868 DBUS_SOCKET_SET_ERRNO ();
869 goto out1;
870 }
871
872 if (!blocking)
873 {
874 arg = 1;
875 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR)
876 {
877 DBUS_SOCKET_SET_ERRNO ();
878 goto out2;
879 }
880
881 arg = 1;
882 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR)
883 {
884 DBUS_SOCKET_SET_ERRNO ();
885 goto out2;
886 }
887 }
888
889 *fd1 = socket1;
890 *fd2 = socket2;
891
892 _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n",
893 *fd1, socket1, *fd2, socket2);
894
895 closesocket (temp);
896
897 return TRUE;
898
899 out2:
900 closesocket (socket2);
901 out1:
902 closesocket (socket1);
903 out0:
904 closesocket (temp);
905
906 dbus_set_error (error, _dbus_error_from_errno (errno),
907 "Could not setup socket pair: %s",
908 _dbus_strerror_from_errno ());
909
910 return FALSE;
911 }
912
913 /**
914 * Wrapper for poll().
915 *
916 * @param fds the file descriptors to poll
917 * @param n_fds number of descriptors in the array
918 * @param timeout_milliseconds timeout or -1 for infinite
919 * @returns numbers of fds with revents, or <0 on error
920 */
921 int
_dbus_poll(DBusPollFD * fds,int n_fds,int timeout_milliseconds)922 _dbus_poll (DBusPollFD *fds,
923 int n_fds,
924 int timeout_milliseconds)
925 {
926 #define USE_CHRIS_IMPL 0
927
928 #if USE_CHRIS_IMPL
929
930 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
931 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
932 char *msgp;
933
934 int ret = 0;
935 int i;
936 struct timeval tv;
937 int ready;
938
939 #define DBUS_STACK_WSAEVENTS 256
940 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS];
941 WSAEVENT *pEvents = NULL;
942 if (n_fds > DBUS_STACK_WSAEVENTS)
943 pEvents = calloc(sizeof(WSAEVENT), n_fds);
944 else
945 pEvents = eventsOnStack;
946
947
948 #ifdef DBUS_ENABLE_VERBOSE_MODE
949 msgp = msg;
950 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds);
951 for (i = 0; i < n_fds; i++)
952 {
953 DBusPollFD *fdp = &fds[i];
954
955
956 if (fdp->events & _DBUS_POLLIN)
957 msgp += sprintf (msgp, "R:%d ", fdp->fd);
958
959 if (fdp->events & _DBUS_POLLOUT)
960 msgp += sprintf (msgp, "W:%d ", fdp->fd);
961
962 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
963
964 // FIXME: more robust code for long msg
965 // create on heap when msg[] becomes too small
966 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
967 {
968 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
969 }
970 }
971
972 msgp += sprintf (msgp, "\n");
973 _dbus_verbose ("%s",msg);
974 #endif
975 for (i = 0; i < n_fds; i++)
976 {
977 DBusPollFD *fdp = &fds[i];
978 WSAEVENT ev;
979 long lNetworkEvents = FD_OOB;
980
981 ev = WSACreateEvent();
982
983 if (fdp->events & _DBUS_POLLIN)
984 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE;
985
986 if (fdp->events & _DBUS_POLLOUT)
987 lNetworkEvents |= FD_WRITE | FD_CONNECT;
988
989 WSAEventSelect(fdp->fd, ev, lNetworkEvents);
990
991 pEvents[i] = ev;
992 }
993
994
995 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE);
996
997 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
998 {
999 DBUS_SOCKET_SET_ERRNO ();
1000 if (errno != WSAEWOULDBLOCK)
1001 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ());
1002 ret = -1;
1003 }
1004 else if (ready == WSA_WAIT_TIMEOUT)
1005 {
1006 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n");
1007 ret = 0;
1008 }
1009 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds))
1010 {
1011 msgp = msg;
1012 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready);
1013
1014 for (i = 0; i < n_fds; i++)
1015 {
1016 DBusPollFD *fdp = &fds[i];
1017 WSANETWORKEVENTS ne;
1018
1019 fdp->revents = 0;
1020
1021 WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne);
1022
1023 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1024 fdp->revents |= _DBUS_POLLIN;
1025
1026 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1027 fdp->revents |= _DBUS_POLLOUT;
1028
1029 if (ne.lNetworkEvents & (FD_OOB))
1030 fdp->revents |= _DBUS_POLLERR;
1031
1032 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1033 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1034
1035 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1036 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1037
1038 if (ne.lNetworkEvents & (FD_OOB))
1039 msgp += sprintf (msgp, "E:%d ", fdp->fd);
1040
1041 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
1042
1043 if(ne.lNetworkEvents)
1044 ret++;
1045
1046 WSAEventSelect(fdp->fd, pEvents[i], 0);
1047 }
1048
1049 msgp += sprintf (msgp, "\n");
1050 _dbus_verbose ("%s",msg);
1051 }
1052 else
1053 {
1054 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!");
1055 ret = -1;
1056 }
1057
1058 for(i = 0; i < n_fds; i++)
1059 {
1060 WSACloseEvent(pEvents[i]);
1061 }
1062
1063 if (n_fds > DBUS_STACK_WSAEVENTS)
1064 free(pEvents);
1065
1066 return ret;
1067
1068 #else /* USE_CHRIS_IMPL */
1069
1070 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1071 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1072 char *msgp;
1073
1074 fd_set read_set, write_set, err_set;
1075 int max_fd = 0;
1076 int i;
1077 struct timeval tv;
1078 int ready;
1079
1080 FD_ZERO (&read_set);
1081 FD_ZERO (&write_set);
1082 FD_ZERO (&err_set);
1083
1084
1085 #ifdef DBUS_ENABLE_VERBOSE_MODE
1086 msgp = msg;
1087 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds);
1088 for (i = 0; i < n_fds; i++)
1089 {
1090 DBusPollFD *fdp = &fds[i];
1091
1092
1093 if (fdp->events & _DBUS_POLLIN)
1094 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1095
1096 if (fdp->events & _DBUS_POLLOUT)
1097 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1098
1099 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1100
1101 // FIXME: more robust code for long msg
1102 // create on heap when msg[] becomes too small
1103 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1104 {
1105 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1106 }
1107 }
1108
1109 msgp += sprintf (msgp, "\n");
1110 _dbus_verbose ("%s",msg);
1111 #endif
1112 for (i = 0; i < n_fds; i++)
1113 {
1114 DBusPollFD *fdp = &fds[i];
1115
1116 if (fdp->events & _DBUS_POLLIN)
1117 FD_SET (fdp->fd, &read_set);
1118
1119 if (fdp->events & _DBUS_POLLOUT)
1120 FD_SET (fdp->fd, &write_set);
1121
1122 FD_SET (fdp->fd, &err_set);
1123
1124 max_fd = MAX (max_fd, fdp->fd);
1125 }
1126
1127 // Avoid random lockups with send(), for lack of a better solution so far
1128 tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000;
1129 tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000;
1130
1131 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1132
1133 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1134 {
1135 DBUS_SOCKET_SET_ERRNO ();
1136 if (errno != WSAEWOULDBLOCK)
1137 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ());
1138 }
1139 else if (ready == 0)
1140 _dbus_verbose ("select: = 0\n");
1141 else
1142 if (ready > 0)
1143 {
1144 #ifdef DBUS_ENABLE_VERBOSE_MODE
1145 msgp = msg;
1146 msgp += sprintf (msgp, "select: = %d:\n\t", ready);
1147
1148 for (i = 0; i < n_fds; i++)
1149 {
1150 DBusPollFD *fdp = &fds[i];
1151
1152 if (FD_ISSET (fdp->fd, &read_set))
1153 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1154
1155 if (FD_ISSET (fdp->fd, &write_set))
1156 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1157
1158 if (FD_ISSET (fdp->fd, &err_set))
1159 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1160 }
1161 msgp += sprintf (msgp, "\n");
1162 _dbus_verbose ("%s",msg);
1163 #endif
1164
1165 for (i = 0; i < n_fds; i++)
1166 {
1167 DBusPollFD *fdp = &fds[i];
1168
1169 fdp->revents = 0;
1170
1171 if (FD_ISSET (fdp->fd, &read_set))
1172 fdp->revents |= _DBUS_POLLIN;
1173
1174 if (FD_ISSET (fdp->fd, &write_set))
1175 fdp->revents |= _DBUS_POLLOUT;
1176
1177 if (FD_ISSET (fdp->fd, &err_set))
1178 fdp->revents |= _DBUS_POLLERR;
1179 }
1180 }
1181 return ready;
1182 #endif /* USE_CHRIS_IMPL */
1183 }
1184
1185
1186
1187
1188 /******************************************************************************
1189
1190 Original CVS version of dbus-sysdeps.c
1191
1192 ******************************************************************************/
1193 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
1194 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation)
1195 *
1196 * Copyright (C) 2002, 2003 Red Hat, Inc.
1197 * Copyright (C) 2003 CodeFactory AB
1198 * Copyright (C) 2005 Novell, Inc.
1199 *
1200 * Licensed under the Academic Free License version 2.1
1201 *
1202 * This program is free software; you can redistribute it and/or modify
1203 * it under the terms of the GNU General Public License as published by
1204 * the Free Software Foundation; either version 2 of the License, or
1205 * (at your option) any later version.
1206 *
1207 * This program is distributed in the hope that it will be useful,
1208 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1209 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1210 * GNU General Public License for more details.
1211 *
1212 * You should have received a copy of the GNU General Public License
1213 * along with this program; if not, write to the Free Software
1214 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1215 *
1216 */
1217
1218
1219 /**
1220 * Exit the process, returning the given value.
1221 *
1222 * @param code the exit code
1223 */
1224 void
_dbus_exit(int code)1225 _dbus_exit (int code)
1226 {
1227 _exit (code);
1228 }
1229
1230 /**
1231 * Creates a socket and connects to a socket at the given host
1232 * and port. The connection fd is returned, and is set up as
1233 * nonblocking.
1234 *
1235 * @param host the host name to connect to
1236 * @param port the port to connect to
1237 * @param family the address family to listen on, NULL for all
1238 * @param error return location for error code
1239 * @returns connection file descriptor or -1 on error
1240 */
1241 int
_dbus_connect_tcp_socket(const char * host,const char * port,const char * family,DBusError * error)1242 _dbus_connect_tcp_socket (const char *host,
1243 const char *port,
1244 const char *family,
1245 DBusError *error)
1246 {
1247 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error);
1248 }
1249
1250 int
_dbus_connect_tcp_socket_with_nonce(const char * host,const char * port,const char * family,const char * noncefile,DBusError * error)1251 _dbus_connect_tcp_socket_with_nonce (const char *host,
1252 const char *port,
1253 const char *family,
1254 const char *noncefile,
1255 DBusError *error)
1256 {
1257 int fd = -1, res;
1258 struct addrinfo hints;
1259 struct addrinfo *ai, *tmp;
1260
1261 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1262
1263 _dbus_win_startup_winsock ();
1264
1265 _DBUS_ZERO (hints);
1266
1267 if (!family)
1268 hints.ai_family = AF_UNSPEC;
1269 else if (!strcmp(family, "ipv4"))
1270 hints.ai_family = AF_INET;
1271 else if (!strcmp(family, "ipv6"))
1272 hints.ai_family = AF_INET6;
1273 else
1274 {
1275 dbus_set_error (error,
1276 DBUS_ERROR_INVALID_ARGS,
1277 "Unknown address family %s", family);
1278 return -1;
1279 }
1280 hints.ai_protocol = IPPROTO_TCP;
1281 hints.ai_socktype = SOCK_STREAM;
1282 #ifdef AI_ADDRCONFIG
1283 hints.ai_flags = AI_ADDRCONFIG;
1284 #else
1285 hints.ai_flags = 0;
1286 #endif
1287
1288 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1289 {
1290 dbus_set_error (error,
1291 _dbus_error_from_errno (res),
1292 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1293 host, port, _dbus_strerror(res), res);
1294 return -1;
1295 }
1296
1297 tmp = ai;
1298 while (tmp)
1299 {
1300 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1301 {
1302 DBUS_SOCKET_SET_ERRNO ();
1303 dbus_set_error (error,
1304 _dbus_error_from_errno (errno),
1305 "Failed to open socket: %s",
1306 _dbus_strerror_from_errno ());
1307 freeaddrinfo(ai);
1308 return -1;
1309 }
1310 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1311
1312 if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1313 {
1314 DBUS_SOCKET_SET_ERRNO ();
1315 closesocket(fd);
1316 fd = -1;
1317 tmp = tmp->ai_next;
1318 continue;
1319 }
1320
1321 break;
1322 }
1323 freeaddrinfo(ai);
1324
1325 if (fd == -1)
1326 {
1327 dbus_set_error (error,
1328 _dbus_error_from_errno (errno),
1329 "Failed to connect to socket \"%s:%s\" %s",
1330 host, port, _dbus_strerror_from_errno ());
1331 return -1;
1332 }
1333
1334 if (noncefile != NULL)
1335 {
1336 DBusString noncefileStr;
1337 dbus_bool_t ret;
1338 if (!_dbus_string_init (&noncefileStr) ||
1339 !_dbus_string_append(&noncefileStr, noncefile))
1340 {
1341 closesocket (fd);
1342 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1343 return -1;
1344 }
1345
1346 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1347
1348 _dbus_string_free (&noncefileStr);
1349
1350 if (!ret)
1351 {
1352 closesocket (fd);
1353 return -1;
1354 }
1355 }
1356
1357 _dbus_fd_set_close_on_exec (fd);
1358
1359 if (!_dbus_set_fd_nonblocking (fd, error))
1360 {
1361 closesocket (fd);
1362 return -1;
1363 }
1364
1365 return fd;
1366 }
1367
1368 /**
1369 * Creates a socket and binds it to the given path, then listens on
1370 * the socket. The socket is set to be nonblocking. In case of port=0
1371 * a random free port is used and returned in the port parameter.
1372 * If inaddr_any is specified, the hostname is ignored.
1373 *
1374 * @param host the host name to listen on
1375 * @param port the port to listen on, if zero a free port will be used
1376 * @param family the address family to listen on, NULL for all
1377 * @param retport string to return the actual port listened on
1378 * @param fds_p location to store returned file descriptors
1379 * @param error return location for errors
1380 * @returns the number of listening file descriptors or -1 on error
1381 */
1382
1383 int
_dbus_listen_tcp_socket(const char * host,const char * port,const char * family,DBusString * retport,int ** fds_p,DBusError * error)1384 _dbus_listen_tcp_socket (const char *host,
1385 const char *port,
1386 const char *family,
1387 DBusString *retport,
1388 int **fds_p,
1389 DBusError *error)
1390 {
1391 int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1;
1392 struct addrinfo hints;
1393 struct addrinfo *ai, *tmp;
1394
1395 // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old
1396 //That's required for family == IPv6(which is the default on Vista if family is not given)
1397 //So we use our own union instead of sockaddr_gen:
1398
1399 typedef union {
1400 struct sockaddr Address;
1401 struct sockaddr_in AddressIn;
1402 struct sockaddr_in6 AddressIn6;
1403 } mysockaddr_gen;
1404
1405 *fds_p = NULL;
1406 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1407
1408 _dbus_win_startup_winsock ();
1409
1410 _DBUS_ZERO (hints);
1411
1412 if (!family)
1413 hints.ai_family = AF_UNSPEC;
1414 else if (!strcmp(family, "ipv4"))
1415 hints.ai_family = AF_INET;
1416 else if (!strcmp(family, "ipv6"))
1417 hints.ai_family = AF_INET6;
1418 else
1419 {
1420 dbus_set_error (error,
1421 DBUS_ERROR_INVALID_ARGS,
1422 "Unknown address family %s", family);
1423 return -1;
1424 }
1425
1426 hints.ai_protocol = IPPROTO_TCP;
1427 hints.ai_socktype = SOCK_STREAM;
1428 #ifdef AI_ADDRCONFIG
1429 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1430 #else
1431 hints.ai_flags = AI_PASSIVE;
1432 #endif
1433
1434 redo_lookup_with_port:
1435 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1436 {
1437 dbus_set_error (error,
1438 _dbus_error_from_errno (res),
1439 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1440 host ? host : "*", port, _dbus_strerror(res), res);
1441 return -1;
1442 }
1443
1444 tmp = ai;
1445 while (tmp)
1446 {
1447 int fd = -1, *newlisten_fd;
1448 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1449 {
1450 DBUS_SOCKET_SET_ERRNO ();
1451 dbus_set_error (error,
1452 _dbus_error_from_errno (errno),
1453 "Failed to open socket: %s",
1454 _dbus_strerror_from_errno ());
1455 goto failed;
1456 }
1457 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1458
1459 if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1460 {
1461 DBUS_SOCKET_SET_ERRNO ();
1462 dbus_set_error (error, _dbus_error_from_errno (errno),
1463 "Failed to bind socket \"%s:%s\": %s",
1464 host ? host : "*", port, _dbus_strerror_from_errno ());
1465 closesocket (fd);
1466 goto failed;
1467 }
1468
1469 if (listen (fd, 30 /* backlog */) == SOCKET_ERROR)
1470 {
1471 DBUS_SOCKET_SET_ERRNO ();
1472 dbus_set_error (error, _dbus_error_from_errno (errno),
1473 "Failed to listen on socket \"%s:%s\": %s",
1474 host ? host : "*", port, _dbus_strerror_from_errno ());
1475 closesocket (fd);
1476 goto failed;
1477 }
1478
1479 newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1));
1480 if (!newlisten_fd)
1481 {
1482 closesocket (fd);
1483 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1484 "Failed to allocate file handle array");
1485 goto failed;
1486 }
1487 listen_fd = newlisten_fd;
1488 listen_fd[nlisten_fd] = fd;
1489 nlisten_fd++;
1490
1491 if (!_dbus_string_get_length(retport))
1492 {
1493 /* If the user didn't specify a port, or used 0, then
1494 the kernel chooses a port. After the first address
1495 is bound to, we need to force all remaining addresses
1496 to use the same port */
1497 if (!port || !strcmp(port, "0"))
1498 {
1499 mysockaddr_gen addr;
1500 socklen_t addrlen = sizeof(addr);
1501 char portbuf[10];
1502
1503 if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR)
1504 {
1505 DBUS_SOCKET_SET_ERRNO ();
1506 dbus_set_error (error, _dbus_error_from_errno (errno),
1507 "Failed to resolve port \"%s:%s\": %s",
1508 host ? host : "*", port, _dbus_strerror_from_errno());
1509 goto failed;
1510 }
1511 snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port );
1512 if (!_dbus_string_append(retport, portbuf))
1513 {
1514 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1515 goto failed;
1516 }
1517
1518 /* Release current address list & redo lookup */
1519 port = _dbus_string_get_const_data(retport);
1520 freeaddrinfo(ai);
1521 goto redo_lookup_with_port;
1522 }
1523 else
1524 {
1525 if (!_dbus_string_append(retport, port))
1526 {
1527 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1528 goto failed;
1529 }
1530 }
1531 }
1532
1533 tmp = tmp->ai_next;
1534 }
1535 freeaddrinfo(ai);
1536 ai = NULL;
1537
1538 if (!nlisten_fd)
1539 {
1540 _dbus_win_set_errno (WSAEADDRINUSE);
1541 dbus_set_error (error, _dbus_error_from_errno (errno),
1542 "Failed to bind socket \"%s:%s\": %s",
1543 host ? host : "*", port, _dbus_strerror_from_errno ());
1544 return -1;
1545 }
1546
1547 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num);
1548
1549 for (i = 0 ; i < nlisten_fd ; i++)
1550 {
1551 _dbus_fd_set_close_on_exec (listen_fd[i]);
1552 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1553 {
1554 goto failed;
1555 }
1556 }
1557
1558 *fds_p = listen_fd;
1559
1560 return nlisten_fd;
1561
1562 failed:
1563 if (ai)
1564 freeaddrinfo(ai);
1565 for (i = 0 ; i < nlisten_fd ; i++)
1566 closesocket (listen_fd[i]);
1567 dbus_free(listen_fd);
1568 return -1;
1569 }
1570
1571
1572 /**
1573 * Accepts a connection on a listening socket.
1574 * Handles EINTR for you.
1575 *
1576 * @param listen_fd the listen file descriptor
1577 * @returns the connection fd of the client, or -1 on error
1578 */
1579 int
_dbus_accept(int listen_fd)1580 _dbus_accept (int listen_fd)
1581 {
1582 int client_fd;
1583
1584 retry:
1585 client_fd = accept (listen_fd, NULL, NULL);
1586
1587 if (DBUS_SOCKET_IS_INVALID (client_fd))
1588 {
1589 DBUS_SOCKET_SET_ERRNO ();
1590 if (errno == EINTR)
1591 goto retry;
1592 }
1593
1594 _dbus_verbose ("client fd %d accepted\n", client_fd);
1595
1596 return client_fd;
1597 }
1598
1599
1600
1601
1602 dbus_bool_t
_dbus_send_credentials_socket(int handle,DBusError * error)1603 _dbus_send_credentials_socket (int handle,
1604 DBusError *error)
1605 {
1606 /* FIXME: for the session bus credentials shouldn't matter (?), but
1607 * for the system bus they are presumably essential. A rough outline
1608 * of a way to implement the credential transfer would be this:
1609 *
1610 * client waits to *read* a byte.
1611 *
1612 * server creates a named pipe with a random name, sends a byte
1613 * contining its length, and its name.
1614 *
1615 * client reads the name, connects to it (using Win32 API).
1616 *
1617 * server waits for connection to the named pipe, then calls
1618 * ImpersonateNamedPipeClient(), notes its now-current credentials,
1619 * calls RevertToSelf(), closes its handles to the named pipe, and
1620 * is done. (Maybe there is some other way to get the SID of a named
1621 * pipe client without having to use impersonation?)
1622 *
1623 * client closes its handles and is done.
1624 *
1625 * Ralf: Why not sending credentials over the given this connection ?
1626 * Using named pipes makes it impossible to be connected from a unix client.
1627 *
1628 */
1629 int bytes_written;
1630 DBusString buf;
1631
1632 _dbus_string_init_const_len (&buf, "\0", 1);
1633 again:
1634 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 );
1635
1636 if (bytes_written < 0 && errno == EINTR)
1637 goto again;
1638
1639 if (bytes_written < 0)
1640 {
1641 dbus_set_error (error, _dbus_error_from_errno (errno),
1642 "Failed to write credentials byte: %s",
1643 _dbus_strerror_from_errno ());
1644 return FALSE;
1645 }
1646 else if (bytes_written == 0)
1647 {
1648 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
1649 "wrote zero bytes writing credentials byte");
1650 return FALSE;
1651 }
1652 else
1653 {
1654 _dbus_assert (bytes_written == 1);
1655 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n");
1656 return TRUE;
1657 }
1658 return TRUE;
1659 }
1660
1661 /**
1662 * Reads a single byte which must be nul (an error occurs otherwise),
1663 * and reads unix credentials if available. Fills in pid/uid/gid with
1664 * -1 if no credentials are available. Return value indicates whether
1665 * a byte was read, not whether we got valid credentials. On some
1666 * systems, such as Linux, reading/writing the byte isn't actually
1667 * required, but we do it anyway just to avoid multiple codepaths.
1668 *
1669 * Fails if no byte is available, so you must select() first.
1670 *
1671 * The point of the byte is that on some systems we have to
1672 * use sendmsg()/recvmsg() to transmit credentials.
1673 *
1674 * @param client_fd the client file descriptor
1675 * @param credentials struct to fill with credentials of client
1676 * @param error location to store error code
1677 * @returns #TRUE on success
1678 */
1679 dbus_bool_t
_dbus_read_credentials_socket(int handle,DBusCredentials * credentials,DBusError * error)1680 _dbus_read_credentials_socket (int handle,
1681 DBusCredentials *credentials,
1682 DBusError *error)
1683 {
1684 int bytes_read = 0;
1685 DBusString buf;
1686
1687 // could fail due too OOM
1688 if (_dbus_string_init(&buf))
1689 {
1690 bytes_read = _dbus_read_socket(handle, &buf, 1 );
1691
1692 if (bytes_read > 0)
1693 _dbus_verbose("got one zero byte from server");
1694
1695 _dbus_string_free(&buf);
1696 }
1697
1698 _dbus_credentials_add_from_current_process (credentials);
1699 _dbus_verbose("FIXME: get faked credentials from current process");
1700
1701 return TRUE;
1702 }
1703
1704 /**
1705 * Checks to make sure the given directory is
1706 * private to the user
1707 *
1708 * @param dir the name of the directory
1709 * @param error error return
1710 * @returns #FALSE on failure
1711 **/
1712 dbus_bool_t
_dbus_check_dir_is_private_to_user(DBusString * dir,DBusError * error)1713 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error)
1714 {
1715 /* TODO */
1716 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1717 return TRUE;
1718 }
1719
1720
1721 /**
1722 * Appends the given filename to the given directory.
1723 *
1724 * @todo it might be cute to collapse multiple '/' such as "foo//"
1725 * concat "//bar"
1726 *
1727 * @param dir the directory name
1728 * @param next_component the filename
1729 * @returns #TRUE on success
1730 */
1731 dbus_bool_t
_dbus_concat_dir_and_file(DBusString * dir,const DBusString * next_component)1732 _dbus_concat_dir_and_file (DBusString *dir,
1733 const DBusString *next_component)
1734 {
1735 dbus_bool_t dir_ends_in_slash;
1736 dbus_bool_t file_starts_with_slash;
1737
1738 if (_dbus_string_get_length (dir) == 0 ||
1739 _dbus_string_get_length (next_component) == 0)
1740 return TRUE;
1741
1742 dir_ends_in_slash =
1743 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) ||
1744 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1));
1745
1746 file_starts_with_slash =
1747 ('/' == _dbus_string_get_byte (next_component, 0) ||
1748 '\\' == _dbus_string_get_byte (next_component, 0));
1749
1750 if (dir_ends_in_slash && file_starts_with_slash)
1751 {
1752 _dbus_string_shorten (dir, 1);
1753 }
1754 else if (!(dir_ends_in_slash || file_starts_with_slash))
1755 {
1756 if (!_dbus_string_append_byte (dir, '\\'))
1757 return FALSE;
1758 }
1759
1760 return _dbus_string_copy (next_component, 0, dir,
1761 _dbus_string_get_length (dir));
1762 }
1763
1764 /*---------------- DBusCredentials ----------------------------------*/
1765
1766 /**
1767 * Adds the credentials corresponding to the given username.
1768 *
1769 * @param credentials credentials to fill in
1770 * @param username the username
1771 * @returns #TRUE if the username existed and we got some credentials
1772 */
1773 dbus_bool_t
_dbus_credentials_add_from_user(DBusCredentials * credentials,const DBusString * username)1774 _dbus_credentials_add_from_user (DBusCredentials *credentials,
1775 const DBusString *username)
1776 {
1777 return _dbus_credentials_add_windows_sid (credentials,
1778 _dbus_string_get_const_data(username));
1779 }
1780
1781 /**
1782 * Adds the credentials of the current process to the
1783 * passed-in credentials object.
1784 *
1785 * @param credentials credentials to add to
1786 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added
1787 */
1788
1789 dbus_bool_t
_dbus_credentials_add_from_current_process(DBusCredentials * credentials)1790 _dbus_credentials_add_from_current_process (DBusCredentials *credentials)
1791 {
1792 dbus_bool_t retval = FALSE;
1793 char *sid = NULL;
1794
1795 if (!_dbus_getsid(&sid))
1796 goto failed;
1797
1798 if (!_dbus_credentials_add_unix_pid(credentials, _dbus_getpid()))
1799 goto failed;
1800
1801 if (!_dbus_credentials_add_windows_sid (credentials,sid))
1802 goto failed;
1803
1804 retval = TRUE;
1805 goto end;
1806 failed:
1807 retval = FALSE;
1808 end:
1809 if (sid)
1810 LocalFree(sid);
1811
1812 return retval;
1813 }
1814
1815 /**
1816 * Append to the string the identity we would like to have when we
1817 * authenticate, on UNIX this is the current process UID and on
1818 * Windows something else, probably a Windows SID string. No escaping
1819 * is required, that is done in dbus-auth.c. The username here
1820 * need not be anything human-readable, it can be the machine-readable
1821 * form i.e. a user id.
1822 *
1823 * @param str the string to append to
1824 * @returns #FALSE on no memory
1825 * @todo to which class belongs this
1826 */
1827 dbus_bool_t
_dbus_append_user_from_current_process(DBusString * str)1828 _dbus_append_user_from_current_process (DBusString *str)
1829 {
1830 dbus_bool_t retval = FALSE;
1831 char *sid = NULL;
1832
1833 if (!_dbus_getsid(&sid))
1834 return FALSE;
1835
1836 retval = _dbus_string_append (str,sid);
1837
1838 LocalFree(sid);
1839 return retval;
1840 }
1841
1842 /**
1843 * Gets our process ID
1844 * @returns process ID
1845 */
1846 dbus_pid_t
_dbus_getpid(void)1847 _dbus_getpid (void)
1848 {
1849 return GetCurrentProcessId ();
1850 }
1851
1852 /** nanoseconds in a second */
1853 #define NANOSECONDS_PER_SECOND 1000000000
1854 /** microseconds in a second */
1855 #define MICROSECONDS_PER_SECOND 1000000
1856 /** milliseconds in a second */
1857 #define MILLISECONDS_PER_SECOND 1000
1858 /** nanoseconds in a millisecond */
1859 #define NANOSECONDS_PER_MILLISECOND 1000000
1860 /** microseconds in a millisecond */
1861 #define MICROSECONDS_PER_MILLISECOND 1000
1862
1863 /**
1864 * Sleeps the given number of milliseconds.
1865 * @param milliseconds number of milliseconds
1866 */
1867 void
_dbus_sleep_milliseconds(int milliseconds)1868 _dbus_sleep_milliseconds (int milliseconds)
1869 {
1870 Sleep (milliseconds);
1871 }
1872
1873
1874 /**
1875 * Get current time, as in gettimeofday(). Never uses the monotonic
1876 * clock.
1877 *
1878 * @param tv_sec return location for number of seconds
1879 * @param tv_usec return location for number of microseconds
1880 */
1881 void
_dbus_get_real_time(long * tv_sec,long * tv_usec)1882 _dbus_get_real_time (long *tv_sec,
1883 long *tv_usec)
1884 {
1885 FILETIME ft;
1886 dbus_uint64_t time64;
1887
1888 GetSystemTimeAsFileTime (&ft);
1889
1890 memcpy (&time64, &ft, sizeof (time64));
1891
1892 /* Convert from 100s of nanoseconds since 1601-01-01
1893 * to Unix epoch. Yes, this is Y2038 unsafe.
1894 */
1895 time64 -= DBUS_INT64_CONSTANT (116444736000000000);
1896 time64 /= 10;
1897
1898 if (tv_sec)
1899 *tv_sec = time64 / 1000000;
1900
1901 if (tv_usec)
1902 *tv_usec = time64 % 1000000;
1903 }
1904
1905 /**
1906 * Get current time, as in gettimeofday(). Use the monotonic clock if
1907 * available, to avoid problems when the system time changes.
1908 *
1909 * @param tv_sec return location for number of seconds
1910 * @param tv_usec return location for number of microseconds
1911 */
1912 void
_dbus_get_monotonic_time(long * tv_sec,long * tv_usec)1913 _dbus_get_monotonic_time (long *tv_sec,
1914 long *tv_usec)
1915 {
1916 /* no implementation yet, fall back to wall-clock time */
1917 _dbus_get_real_time (tv_sec, tv_usec);
1918 }
1919
1920 /**
1921 * signal (SIGPIPE, SIG_IGN);
1922 */
1923 void
_dbus_disable_sigpipe(void)1924 _dbus_disable_sigpipe (void)
1925 {
1926 }
1927
1928 /**
1929 * Creates a directory; succeeds if the directory
1930 * is created or already existed.
1931 *
1932 * @param filename directory filename
1933 * @param error initialized error object
1934 * @returns #TRUE on success
1935 */
1936 dbus_bool_t
_dbus_create_directory(const DBusString * filename,DBusError * error)1937 _dbus_create_directory (const DBusString *filename,
1938 DBusError *error)
1939 {
1940 const char *filename_c;
1941
1942 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1943
1944 filename_c = _dbus_string_get_const_data (filename);
1945
1946 if (!CreateDirectoryA (filename_c, NULL))
1947 {
1948 if (GetLastError () == ERROR_ALREADY_EXISTS)
1949 return TRUE;
1950
1951 dbus_set_error (error, DBUS_ERROR_FAILED,
1952 "Failed to create directory %s: %s\n",
1953 filename_c, _dbus_strerror_from_errno ());
1954 return FALSE;
1955 }
1956 else
1957 return TRUE;
1958 }
1959
1960
1961 /**
1962 * Generates the given number of random bytes,
1963 * using the best mechanism we can come up with.
1964 *
1965 * @param str the string
1966 * @param n_bytes the number of random bytes to append to string
1967 * @returns #TRUE on success, #FALSE if no memory
1968 */
1969 dbus_bool_t
_dbus_generate_random_bytes(DBusString * str,int n_bytes)1970 _dbus_generate_random_bytes (DBusString *str,
1971 int n_bytes)
1972 {
1973 int old_len;
1974 char *p;
1975 HCRYPTPROV hprov;
1976
1977 old_len = _dbus_string_get_length (str);
1978
1979 if (!_dbus_string_lengthen (str, n_bytes))
1980 return FALSE;
1981
1982 p = _dbus_string_get_data_len (str, old_len, n_bytes);
1983
1984 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
1985 return FALSE;
1986
1987 if (!CryptGenRandom (hprov, n_bytes, p))
1988 {
1989 CryptReleaseContext (hprov, 0);
1990 return FALSE;
1991 }
1992
1993 CryptReleaseContext (hprov, 0);
1994
1995 return TRUE;
1996 }
1997
1998 /**
1999 * Gets the temporary files directory by inspecting the environment variables
2000 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned
2001 *
2002 * @returns location of temp directory
2003 */
2004 const char*
_dbus_get_tmpdir(void)2005 _dbus_get_tmpdir(void)
2006 {
2007 static const char* tmpdir = NULL;
2008 static char buf[1000];
2009
2010 if (tmpdir == NULL)
2011 {
2012 char *last_slash;
2013
2014 if (!GetTempPathA (sizeof (buf), buf))
2015 {
2016 _dbus_warn ("GetTempPath failed\n");
2017 _dbus_abort ();
2018 }
2019
2020 /* Drop terminating backslash or slash */
2021 last_slash = _mbsrchr (buf, '\\');
2022 if (last_slash > buf && last_slash[1] == '\0')
2023 last_slash[0] = '\0';
2024 last_slash = _mbsrchr (buf, '/');
2025 if (last_slash > buf && last_slash[1] == '\0')
2026 last_slash[0] = '\0';
2027
2028 tmpdir = buf;
2029 }
2030
2031 _dbus_assert(tmpdir != NULL);
2032
2033 return tmpdir;
2034 }
2035
2036
2037 /**
2038 * Deletes the given file.
2039 *
2040 * @param filename the filename
2041 * @param error error location
2042 *
2043 * @returns #TRUE if unlink() succeeded
2044 */
2045 dbus_bool_t
_dbus_delete_file(const DBusString * filename,DBusError * error)2046 _dbus_delete_file (const DBusString *filename,
2047 DBusError *error)
2048 {
2049 const char *filename_c;
2050
2051 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2052
2053 filename_c = _dbus_string_get_const_data (filename);
2054
2055 if (DeleteFileA (filename_c) == 0)
2056 {
2057 dbus_set_error (error, DBUS_ERROR_FAILED,
2058 "Failed to delete file %s: %s\n",
2059 filename_c, _dbus_strerror_from_errno ());
2060 return FALSE;
2061 }
2062 else
2063 return TRUE;
2064 }
2065
2066 /*
2067 * replaces the term DBUS_PREFIX in configure_time_path by the
2068 * current dbus installation directory. On unix this function is a noop
2069 *
2070 * @param configure_time_path
2071 * @return real path
2072 */
2073 const char *
_dbus_replace_install_prefix(const char * configure_time_path)2074 _dbus_replace_install_prefix (const char *configure_time_path)
2075 {
2076 #ifndef DBUS_PREFIX
2077 return configure_time_path;
2078 #else
2079 static char retval[1000];
2080 static char runtime_prefix[1000];
2081 int len = 1000;
2082 int i;
2083
2084 if (!configure_time_path)
2085 return NULL;
2086
2087 if ((!_dbus_get_install_root(runtime_prefix, len) ||
2088 strncmp (configure_time_path, DBUS_PREFIX "/",
2089 strlen (DBUS_PREFIX) + 1))) {
2090 strcat (retval, configure_time_path);
2091 return retval;
2092 }
2093
2094 strcpy (retval, runtime_prefix);
2095 strcat (retval, configure_time_path + strlen (DBUS_PREFIX) + 1);
2096
2097 /* Somehow, in some situations, backslashes get collapsed in the string.
2098 * Since windows C library accepts both forward and backslashes as
2099 * path separators, convert all backslashes to forward slashes.
2100 */
2101
2102 for(i = 0; retval[i] != '\0'; i++) {
2103 if(retval[i] == '\\')
2104 retval[i] = '/';
2105 }
2106 return retval;
2107 #endif
2108 }
2109
2110 #if !defined (DBUS_DISABLE_ASSERTS) || defined(DBUS_BUILD_TESTS)
2111
2112 #if defined(_MSC_VER) || defined(DBUS_WINCE)
2113 # ifdef BACKTRACES
2114 # undef BACKTRACES
2115 # endif
2116 #else
2117 # define BACKTRACES
2118 #endif
2119
2120 #ifdef BACKTRACES
2121 /*
2122 * Backtrace Generator
2123 *
2124 * Copyright 2004 Eric Poech
2125 * Copyright 2004 Robert Shearman
2126 *
2127 * This library is free software; you can redistribute it and/or
2128 * modify it under the terms of the GNU Lesser General Public
2129 * License as published by the Free Software Foundation; either
2130 * version 2.1 of the License, or (at your option) any later version.
2131 *
2132 * This library is distributed in the hope that it will be useful,
2133 * but WITHOUT ANY WARRANTY; without even the implied warranty of
2134 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2135 * Lesser General Public License for more details.
2136 *
2137 * You should have received a copy of the GNU Lesser General Public
2138 * License along with this library; if not, write to the Free Software
2139 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2140 */
2141
2142 #include <winver.h>
2143 #include <imagehlp.h>
2144 #include <stdio.h>
2145
2146 #define DPRINTF _dbus_warn
2147
2148 #ifdef _MSC_VER
2149 #define BOOL int
2150
2151 #define __i386__
2152 #endif
2153
2154 //#define MAKE_FUNCPTR(f) static typeof(f) * p##f
2155
2156 //MAKE_FUNCPTR(StackWalk);
2157 //MAKE_FUNCPTR(SymGetModuleBase);
2158 //MAKE_FUNCPTR(SymFunctionTableAccess);
2159 //MAKE_FUNCPTR(SymInitialize);
2160 //MAKE_FUNCPTR(SymGetSymFromAddr);
2161 //MAKE_FUNCPTR(SymGetModuleInfo);
2162 static BOOL (WINAPI *pStackWalk)(
2163 DWORD MachineType,
2164 HANDLE hProcess,
2165 HANDLE hThread,
2166 LPSTACKFRAME StackFrame,
2167 PVOID ContextRecord,
2168 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2169 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2170 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2171 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2172 );
2173 #ifdef _WIN64
2174 static DWORD64 (WINAPI *pSymGetModuleBase)(
2175 HANDLE hProcess,
2176 DWORD64 dwAddr
2177 );
2178 static PVOID (WINAPI *pSymFunctionTableAccess)(
2179 HANDLE hProcess,
2180 DWORD64 AddrBase
2181 );
2182 #else
2183 static DWORD (WINAPI *pSymGetModuleBase)(
2184 HANDLE hProcess,
2185 DWORD dwAddr
2186 );
2187 static PVOID (WINAPI *pSymFunctionTableAccess)(
2188 HANDLE hProcess,
2189 DWORD AddrBase
2190 );
2191 #endif
2192 static BOOL (WINAPI *pSymInitialize)(
2193 HANDLE hProcess,
2194 PSTR UserSearchPath,
2195 BOOL fInvadeProcess
2196 );
2197 static BOOL (WINAPI *pSymGetSymFromAddr)(
2198 HANDLE hProcess,
2199 DWORD Address,
2200 PDWORD Displacement,
2201 PIMAGEHLP_SYMBOL Symbol
2202 );
2203 static BOOL (WINAPI *pSymGetModuleInfo)(
2204 HANDLE hProcess,
2205 DWORD dwAddr,
2206 PIMAGEHLP_MODULE ModuleInfo
2207 );
2208 static DWORD (WINAPI *pSymSetOptions)(
2209 DWORD SymOptions
2210 );
2211
2212
init_backtrace()2213 static BOOL init_backtrace()
2214 {
2215 HMODULE hmodDbgHelp = LoadLibraryA("dbghelp");
2216 /*
2217 #define GETFUNC(x) \
2218 p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \
2219 if (!p##x) \
2220 { \
2221 return FALSE; \
2222 }
2223 */
2224
2225
2226 // GETFUNC(StackWalk);
2227 // GETFUNC(SymGetModuleBase);
2228 // GETFUNC(SymFunctionTableAccess);
2229 // GETFUNC(SymInitialize);
2230 // GETFUNC(SymGetSymFromAddr);
2231 // GETFUNC(SymGetModuleInfo);
2232
2233 #define FUNC(x) #x
2234
2235 pStackWalk = (BOOL (WINAPI *)(
2236 DWORD MachineType,
2237 HANDLE hProcess,
2238 HANDLE hThread,
2239 LPSTACKFRAME StackFrame,
2240 PVOID ContextRecord,
2241 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2242 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2243 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2244 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2245 ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk));
2246 #ifdef _WIN64
2247 pSymGetModuleBase=(DWORD64 (WINAPI *)(
2248 HANDLE hProcess,
2249 DWORD64 dwAddr
2250 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2251 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2252 HANDLE hProcess,
2253 DWORD64 AddrBase
2254 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2255 #else
2256 pSymGetModuleBase=(DWORD (WINAPI *)(
2257 HANDLE hProcess,
2258 DWORD dwAddr
2259 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2260 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2261 HANDLE hProcess,
2262 DWORD AddrBase
2263 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2264 #endif
2265 pSymInitialize = (BOOL (WINAPI *)(
2266 HANDLE hProcess,
2267 PSTR UserSearchPath,
2268 BOOL fInvadeProcess
2269 ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize));
2270 pSymGetSymFromAddr = (BOOL (WINAPI *)(
2271 HANDLE hProcess,
2272 DWORD Address,
2273 PDWORD Displacement,
2274 PIMAGEHLP_SYMBOL Symbol
2275 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr));
2276 pSymGetModuleInfo = (BOOL (WINAPI *)(
2277 HANDLE hProcess,
2278 DWORD dwAddr,
2279 PIMAGEHLP_MODULE ModuleInfo
2280 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo));
2281 pSymSetOptions = (DWORD (WINAPI *)(
2282 DWORD SymOptions
2283 ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions));
2284
2285
2286 pSymSetOptions(SYMOPT_UNDNAME);
2287
2288 pSymInitialize(GetCurrentProcess(), NULL, TRUE);
2289
2290 return TRUE;
2291 }
2292
dump_backtrace_for_thread(HANDLE hThread)2293 static void dump_backtrace_for_thread(HANDLE hThread)
2294 {
2295 STACKFRAME sf;
2296 CONTEXT context;
2297 DWORD dwImageType;
2298
2299 if (!pStackWalk)
2300 if (!init_backtrace())
2301 return;
2302
2303 /* can't use this function for current thread as GetThreadContext
2304 * doesn't support getting context from current thread */
2305 if (hThread == GetCurrentThread())
2306 return;
2307
2308 DPRINTF("Backtrace:\n");
2309
2310 _DBUS_ZERO(context);
2311 context.ContextFlags = CONTEXT_FULL;
2312
2313 SuspendThread(hThread);
2314
2315 if (!GetThreadContext(hThread, &context))
2316 {
2317 DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError());
2318 ResumeThread(hThread);
2319 return;
2320 }
2321
2322 _DBUS_ZERO(sf);
2323
2324 #ifdef __i386__
2325 sf.AddrFrame.Offset = context.Ebp;
2326 sf.AddrFrame.Mode = AddrModeFlat;
2327 sf.AddrPC.Offset = context.Eip;
2328 sf.AddrPC.Mode = AddrModeFlat;
2329 dwImageType = IMAGE_FILE_MACHINE_I386;
2330 #elif _M_X64
2331 dwImageType = IMAGE_FILE_MACHINE_AMD64;
2332 sf.AddrPC.Offset = context.Rip;
2333 sf.AddrPC.Mode = AddrModeFlat;
2334 sf.AddrFrame.Offset = context.Rsp;
2335 sf.AddrFrame.Mode = AddrModeFlat;
2336 sf.AddrStack.Offset = context.Rsp;
2337 sf.AddrStack.Mode = AddrModeFlat;
2338 #elif _M_IA64
2339 dwImageType = IMAGE_FILE_MACHINE_IA64;
2340 sf.AddrPC.Offset = context.StIIP;
2341 sf.AddrPC.Mode = AddrModeFlat;
2342 sf.AddrFrame.Offset = context.IntSp;
2343 sf.AddrFrame.Mode = AddrModeFlat;
2344 sf.AddrBStore.Offset= context.RsBSP;
2345 sf.AddrBStore.Mode = AddrModeFlat;
2346 sf.AddrStack.Offset = context.IntSp;
2347 sf.AddrStack.Mode = AddrModeFlat;
2348 #else
2349 # error You need to fill in the STACKFRAME structure for your architecture
2350 #endif
2351
2352 while (pStackWalk(dwImageType, GetCurrentProcess(),
2353 hThread, &sf, &context, NULL, pSymFunctionTableAccess,
2354 pSymGetModuleBase, NULL))
2355 {
2356 BYTE buffer[256];
2357 IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer;
2358 DWORD dwDisplacement;
2359
2360 pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
2361 pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1;
2362
2363 if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset,
2364 &dwDisplacement, pSymbol))
2365 {
2366 IMAGEHLP_MODULE ModuleInfo;
2367 ModuleInfo.SizeOfStruct = sizeof(ModuleInfo);
2368
2369 if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset,
2370 &ModuleInfo))
2371 DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset);
2372 else
2373 DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName,
2374 sf.AddrPC.Offset - ModuleInfo.BaseOfImage);
2375 }
2376 else if (dwDisplacement)
2377 DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement);
2378 else
2379 DPRINTF("4\t%s\n", pSymbol->Name);
2380 }
2381
2382 ResumeThread(hThread);
2383 }
2384
dump_thread_proc(LPVOID lpParameter)2385 static DWORD WINAPI dump_thread_proc(LPVOID lpParameter)
2386 {
2387 dump_backtrace_for_thread((HANDLE)lpParameter);
2388 return 0;
2389 }
2390
2391 /* cannot get valid context from current thread, so we have to execute
2392 * backtrace from another thread */
dump_backtrace()2393 static void dump_backtrace()
2394 {
2395 HANDLE hCurrentThread;
2396 HANDLE hThread;
2397 DWORD dwThreadId;
2398 DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
2399 GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS);
2400 hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
2401 0, &dwThreadId);
2402 WaitForSingleObject(hThread, INFINITE);
2403 CloseHandle(hThread);
2404 CloseHandle(hCurrentThread);
2405 }
2406 #endif
2407 #endif /* asserts or tests enabled */
2408
2409 #ifdef BACKTRACES
_dbus_print_backtrace(void)2410 void _dbus_print_backtrace(void)
2411 {
2412 init_backtrace();
2413 dump_backtrace();
2414 }
2415 #else
_dbus_print_backtrace(void)2416 void _dbus_print_backtrace(void)
2417 {
2418 _dbus_verbose (" D-Bus not compiled with backtrace support\n");
2419 }
2420 #endif
2421
fromAscii(char ascii)2422 static dbus_uint32_t fromAscii(char ascii)
2423 {
2424 if(ascii >= '0' && ascii <= '9')
2425 return ascii - '0';
2426 if(ascii >= 'A' && ascii <= 'F')
2427 return ascii - 'A' + 10;
2428 if(ascii >= 'a' && ascii <= 'f')
2429 return ascii - 'a' + 10;
2430 return 0;
2431 }
2432
_dbus_read_local_machine_uuid(DBusGUID * machine_id,dbus_bool_t create_if_not_found,DBusError * error)2433 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
2434 dbus_bool_t create_if_not_found,
2435 DBusError *error)
2436 {
2437 #ifdef DBUS_WINCE
2438 return TRUE;
2439 // TODO
2440 #else
2441 HW_PROFILE_INFOA info;
2442 char *lpc = &info.szHwProfileGuid[0];
2443 dbus_uint32_t u;
2444
2445 // the hw-profile guid lives long enough
2446 if(!GetCurrentHwProfileA(&info))
2447 {
2448 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME
2449 return FALSE;
2450 }
2451
2452 // Form: {12340001-4980-1920-6788-123456789012}
2453 lpc++;
2454 // 12340001
2455 u = ((fromAscii(lpc[0]) << 0) |
2456 (fromAscii(lpc[1]) << 4) |
2457 (fromAscii(lpc[2]) << 8) |
2458 (fromAscii(lpc[3]) << 12) |
2459 (fromAscii(lpc[4]) << 16) |
2460 (fromAscii(lpc[5]) << 20) |
2461 (fromAscii(lpc[6]) << 24) |
2462 (fromAscii(lpc[7]) << 28));
2463 machine_id->as_uint32s[0] = u;
2464
2465 lpc += 9;
2466 // 4980-1920
2467 u = ((fromAscii(lpc[0]) << 0) |
2468 (fromAscii(lpc[1]) << 4) |
2469 (fromAscii(lpc[2]) << 8) |
2470 (fromAscii(lpc[3]) << 12) |
2471 (fromAscii(lpc[5]) << 16) |
2472 (fromAscii(lpc[6]) << 20) |
2473 (fromAscii(lpc[7]) << 24) |
2474 (fromAscii(lpc[8]) << 28));
2475 machine_id->as_uint32s[1] = u;
2476
2477 lpc += 10;
2478 // 6788-1234
2479 u = ((fromAscii(lpc[0]) << 0) |
2480 (fromAscii(lpc[1]) << 4) |
2481 (fromAscii(lpc[2]) << 8) |
2482 (fromAscii(lpc[3]) << 12) |
2483 (fromAscii(lpc[5]) << 16) |
2484 (fromAscii(lpc[6]) << 20) |
2485 (fromAscii(lpc[7]) << 24) |
2486 (fromAscii(lpc[8]) << 28));
2487 machine_id->as_uint32s[2] = u;
2488
2489 lpc += 9;
2490 // 56789012
2491 u = ((fromAscii(lpc[0]) << 0) |
2492 (fromAscii(lpc[1]) << 4) |
2493 (fromAscii(lpc[2]) << 8) |
2494 (fromAscii(lpc[3]) << 12) |
2495 (fromAscii(lpc[4]) << 16) |
2496 (fromAscii(lpc[5]) << 20) |
2497 (fromAscii(lpc[6]) << 24) |
2498 (fromAscii(lpc[7]) << 28));
2499 machine_id->as_uint32s[3] = u;
2500 #endif
2501 return TRUE;
2502 }
2503
2504 static
_dbus_global_lock(const char * mutexname)2505 HANDLE _dbus_global_lock (const char *mutexname)
2506 {
2507 HANDLE mutex;
2508 DWORD gotMutex;
2509
2510 mutex = CreateMutexA( NULL, FALSE, mutexname );
2511 if( !mutex )
2512 {
2513 return FALSE;
2514 }
2515
2516 gotMutex = WaitForSingleObject( mutex, INFINITE );
2517 switch( gotMutex )
2518 {
2519 case WAIT_ABANDONED:
2520 ReleaseMutex (mutex);
2521 CloseHandle (mutex);
2522 return 0;
2523 case WAIT_FAILED:
2524 case WAIT_TIMEOUT:
2525 return 0;
2526 }
2527
2528 return mutex;
2529 }
2530
2531 static
_dbus_global_unlock(HANDLE mutex)2532 void _dbus_global_unlock (HANDLE mutex)
2533 {
2534 ReleaseMutex (mutex);
2535 CloseHandle (mutex);
2536 }
2537
2538 // for proper cleanup in dbus-daemon
2539 static HANDLE hDBusDaemonMutex = NULL;
2540 static HANDLE hDBusSharedMem = NULL;
2541 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2542 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex";
2543 // sync _dbus_get_autolaunch_address
2544 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex";
2545 // mutex to determine if dbus-daemon is already started (per user)
2546 static const char *cDBusDaemonMutex = "DBusDaemonMutex";
2547 // named shm for dbus adress info (per user)
2548 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo";
2549
2550 static dbus_bool_t
_dbus_get_install_root_as_hash(DBusString * out)2551 _dbus_get_install_root_as_hash(DBusString *out)
2552 {
2553 DBusString install_path;
2554
2555 char path[MAX_PATH*2];
2556 int path_size = sizeof(path);
2557
2558 if (!_dbus_get_install_root(path,path_size))
2559 return FALSE;
2560
2561 _dbus_string_init(&install_path);
2562 _dbus_string_append(&install_path,path);
2563
2564 _dbus_string_init(out);
2565 _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path));
2566
2567 if (!_dbus_sha_compute (&install_path, out))
2568 return FALSE;
2569
2570 return TRUE;
2571 }
2572
2573 static dbus_bool_t
_dbus_get_address_string(DBusString * out,const char * basestring,const char * scope)2574 _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope)
2575 {
2576 _dbus_string_init(out);
2577 _dbus_string_append(out,basestring);
2578
2579 if (!scope)
2580 {
2581 return TRUE;
2582 }
2583 else if (strcmp(scope,"*install-path") == 0
2584 // for 1.3 compatibility
2585 || strcmp(scope,"install-path") == 0)
2586 {
2587 DBusString temp;
2588 if (!_dbus_get_install_root_as_hash(&temp))
2589 {
2590 _dbus_string_free(out);
2591 return FALSE;
2592 }
2593 _dbus_string_append(out,"-");
2594 _dbus_string_append(out,_dbus_string_get_const_data(&temp));
2595 _dbus_string_free(&temp);
2596 }
2597 else if (strcmp(scope,"*user") == 0)
2598 {
2599 _dbus_string_append(out,"-");
2600 if (!_dbus_append_user_from_current_process(out))
2601 {
2602 _dbus_string_free(out);
2603 return FALSE;
2604 }
2605 }
2606 else if (strlen(scope) > 0)
2607 {
2608 _dbus_string_append(out,"-");
2609 _dbus_string_append(out,scope);
2610 return TRUE;
2611 }
2612 return TRUE;
2613 }
2614
2615 static dbus_bool_t
_dbus_get_shm_name(DBusString * out,const char * scope)2616 _dbus_get_shm_name (DBusString *out,const char *scope)
2617 {
2618 return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope);
2619 }
2620
2621 static dbus_bool_t
_dbus_get_mutex_name(DBusString * out,const char * scope)2622 _dbus_get_mutex_name (DBusString *out,const char *scope)
2623 {
2624 return _dbus_get_address_string (out,cDBusDaemonMutex,scope);
2625 }
2626
2627 dbus_bool_t
_dbus_daemon_is_session_bus_address_published(const char * scope)2628 _dbus_daemon_is_session_bus_address_published (const char *scope)
2629 {
2630 HANDLE lock;
2631 DBusString mutex_name;
2632
2633 if (!_dbus_get_mutex_name(&mutex_name,scope))
2634 {
2635 _dbus_string_free( &mutex_name );
2636 return FALSE;
2637 }
2638
2639 if (hDBusDaemonMutex)
2640 return TRUE;
2641
2642 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2643 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2644
2645 // we use CreateMutex instead of OpenMutex because of possible race conditions,
2646 // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx
2647 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2648
2649 /* The client uses mutex ownership to detect a running server, so the server should do so too.
2650 Fortunally the client deletes the mutex in the lock protected area, so checking presence
2651 will work too. */
2652
2653 _dbus_global_unlock( lock );
2654
2655 _dbus_string_free( &mutex_name );
2656
2657 if (hDBusDaemonMutex == NULL)
2658 return FALSE;
2659 if (GetLastError() == ERROR_ALREADY_EXISTS)
2660 {
2661 CloseHandle(hDBusDaemonMutex);
2662 hDBusDaemonMutex = NULL;
2663 return TRUE;
2664 }
2665 // mutex wasn't created before, so return false.
2666 // We leave the mutex name allocated for later reusage
2667 // in _dbus_daemon_publish_session_bus_address.
2668 return FALSE;
2669 }
2670
2671 dbus_bool_t
_dbus_daemon_publish_session_bus_address(const char * address,const char * scope)2672 _dbus_daemon_publish_session_bus_address (const char* address, const char *scope)
2673 {
2674 HANDLE lock;
2675 char *shared_addr = NULL;
2676 DBusString shm_name;
2677 DBusString mutex_name;
2678
2679 _dbus_assert (address);
2680
2681 if (!_dbus_get_mutex_name(&mutex_name,scope))
2682 {
2683 _dbus_string_free( &mutex_name );
2684 return FALSE;
2685 }
2686
2687 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2688 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2689
2690 if (!hDBusDaemonMutex)
2691 {
2692 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2693 }
2694 _dbus_string_free( &mutex_name );
2695
2696 // acquire the mutex
2697 if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0)
2698 {
2699 _dbus_global_unlock( lock );
2700 CloseHandle( hDBusDaemonMutex );
2701 return FALSE;
2702 }
2703
2704 if (!_dbus_get_shm_name(&shm_name,scope))
2705 {
2706 _dbus_string_free( &shm_name );
2707 _dbus_global_unlock( lock );
2708 return FALSE;
2709 }
2710
2711 // create shm
2712 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2713 0, strlen( address ) + 1, _dbus_string_get_const_data(&shm_name) );
2714 _dbus_assert( hDBusSharedMem );
2715
2716 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 );
2717
2718 _dbus_assert (shared_addr);
2719
2720 strcpy( shared_addr, address);
2721
2722 // cleanup
2723 UnmapViewOfFile( shared_addr );
2724
2725 _dbus_global_unlock( lock );
2726 _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) );
2727
2728 _dbus_string_free( &shm_name );
2729 return TRUE;
2730 }
2731
2732 void
_dbus_daemon_unpublish_session_bus_address(void)2733 _dbus_daemon_unpublish_session_bus_address (void)
2734 {
2735 HANDLE lock;
2736
2737 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2738 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2739
2740 CloseHandle( hDBusSharedMem );
2741
2742 hDBusSharedMem = NULL;
2743
2744 ReleaseMutex( hDBusDaemonMutex );
2745
2746 CloseHandle( hDBusDaemonMutex );
2747
2748 hDBusDaemonMutex = NULL;
2749
2750 _dbus_global_unlock( lock );
2751 }
2752
2753 static dbus_bool_t
_dbus_get_autolaunch_shm(DBusString * address,DBusString * shm_name)2754 _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name)
2755 {
2756 HANDLE sharedMem;
2757 char *shared_addr;
2758 int i;
2759
2760 // read shm
2761 for(i=0;i<20;++i) {
2762 // we know that dbus-daemon is available, so we wait until shm is available
2763 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name));
2764 if( sharedMem == 0 )
2765 Sleep( 100 );
2766 if ( sharedMem != 0)
2767 break;
2768 }
2769
2770 if( sharedMem == 0 )
2771 return FALSE;
2772
2773 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 );
2774
2775 if( !shared_addr )
2776 return FALSE;
2777
2778 _dbus_string_init( address );
2779
2780 _dbus_string_append( address, shared_addr );
2781
2782 // cleanup
2783 UnmapViewOfFile( shared_addr );
2784
2785 CloseHandle( sharedMem );
2786
2787 return TRUE;
2788 }
2789
2790 static dbus_bool_t
_dbus_daemon_already_runs(DBusString * address,DBusString * shm_name,const char * scope)2791 _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope)
2792 {
2793 HANDLE lock;
2794 HANDLE daemon;
2795 DBusString mutex_name;
2796 dbus_bool_t bRet = TRUE;
2797
2798 if (!_dbus_get_mutex_name(&mutex_name,scope))
2799 {
2800 _dbus_string_free( &mutex_name );
2801 return FALSE;
2802 }
2803
2804 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2805 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2806
2807 // do checks
2808 daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2809 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT)
2810 {
2811 ReleaseMutex (daemon);
2812 CloseHandle (daemon);
2813
2814 _dbus_global_unlock( lock );
2815 _dbus_string_free( &mutex_name );
2816 return FALSE;
2817 }
2818
2819 // read shm
2820 bRet = _dbus_get_autolaunch_shm( address, shm_name );
2821
2822 // cleanup
2823 CloseHandle ( daemon );
2824
2825 _dbus_global_unlock( lock );
2826 _dbus_string_free( &mutex_name );
2827
2828 return bRet;
2829 }
2830
2831 dbus_bool_t
_dbus_get_autolaunch_address(const char * scope,DBusString * address,DBusError * error)2832 _dbus_get_autolaunch_address (const char *scope, DBusString *address,
2833 DBusError *error)
2834 {
2835 HANDLE mutex;
2836 STARTUPINFOA si;
2837 PROCESS_INFORMATION pi;
2838 dbus_bool_t retval = FALSE;
2839 LPSTR lpFile;
2840 char dbus_exe_path[MAX_PATH];
2841 char dbus_args[MAX_PATH * 2];
2842 const char * daemon_name = DBUS_DAEMON_NAME ".exe";
2843 DBusString shm_name;
2844
2845 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2846
2847 if (!_dbus_get_shm_name(&shm_name,scope))
2848 {
2849 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name");
2850 return FALSE;
2851 }
2852
2853 mutex = _dbus_global_lock ( cDBusAutolaunchMutex );
2854
2855 if (_dbus_daemon_already_runs(address,&shm_name,scope))
2856 {
2857 _dbus_verbose( "found running dbus daemon at %s\n",
2858 _dbus_string_get_const_data (&shm_name) );
2859 retval = TRUE;
2860 goto out;
2861 }
2862
2863 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
2864 {
2865 // Look in directory containing dbus shared library
2866 HMODULE hmod;
2867 char dbus_module_path[MAX_PATH];
2868 DWORD rc;
2869
2870 _dbus_verbose( "did not found dbus daemon executable on default search path, "
2871 "trying path where dbus shared library is located");
2872
2873 hmod = _dbus_win_get_dll_hmodule();
2874 rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path));
2875 if (rc <= 0)
2876 {
2877 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name");
2878 retval = FALSE;
2879 goto out;
2880 }
2881 else
2882 {
2883 char *ext_idx = strrchr(dbus_module_path, '\\');
2884 if (ext_idx)
2885 *ext_idx = '\0';
2886 if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
2887 {
2888 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable");
2889 retval = FALSE;
2890 printf ("please add the path to %s to your PATH environment variable\n", daemon_name);
2891 printf ("or start the daemon manually\n\n");
2892 goto out;
2893 }
2894 _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path);
2895 }
2896 }
2897
2898
2899 // Create process
2900 ZeroMemory( &si, sizeof(si) );
2901 si.cb = sizeof(si);
2902 ZeroMemory( &pi, sizeof(pi) );
2903
2904 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session");
2905
2906 // argv[i] = "--config-file=bus\\session.conf";
2907 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args);
2908 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
2909 {
2910 CloseHandle (pi.hThread);
2911 CloseHandle (pi.hProcess);
2912 retval = _dbus_get_autolaunch_shm( address, &shm_name );
2913 if (retval == FALSE)
2914 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon");
2915 }
2916 else
2917 {
2918 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon");
2919 retval = FALSE;
2920 }
2921
2922 out:
2923 if (retval)
2924 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2925 else
2926 _DBUS_ASSERT_ERROR_IS_SET (error);
2927
2928 _dbus_global_unlock (mutex);
2929
2930 return retval;
2931 }
2932
2933
2934 /** Makes the file readable by every user in the system.
2935 *
2936 * @param filename the filename
2937 * @param error error location
2938 * @returns #TRUE if the file's permissions could be changed.
2939 */
2940 dbus_bool_t
_dbus_make_file_world_readable(const DBusString * filename,DBusError * error)2941 _dbus_make_file_world_readable(const DBusString *filename,
2942 DBusError *error)
2943 {
2944 // TODO
2945 return TRUE;
2946 }
2947
2948 /**
2949 * return the relocated DATADIR
2950 *
2951 * @returns relocated DATADIR static string
2952 */
2953
2954 static const char *
_dbus_windows_get_datadir(void)2955 _dbus_windows_get_datadir (void)
2956 {
2957 return _dbus_replace_install_prefix(DBUS_DATADIR);
2958 }
2959
2960 #undef DBUS_DATADIR
2961 #define DBUS_DATADIR _dbus_windows_get_datadir ()
2962
2963
2964 #define DBUS_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
2965 #define DBUS_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
2966
2967 /**
2968 * Returns the standard directories for a session bus to look for service
2969 * activation files
2970 *
2971 * On Windows this should be data directories:
2972 *
2973 * %CommonProgramFiles%/dbus
2974 *
2975 * and
2976 *
2977 * relocated DBUS_DATADIR
2978 *
2979 * @param dirs the directory list we are returning
2980 * @returns #FALSE on OOM
2981 */
2982
2983 dbus_bool_t
_dbus_get_standard_session_servicedirs(DBusList ** dirs)2984 _dbus_get_standard_session_servicedirs (DBusList **dirs)
2985 {
2986 const char *common_progs;
2987 DBusString servicedir_path;
2988
2989 if (!_dbus_string_init (&servicedir_path))
2990 return FALSE;
2991
2992 #ifdef DBUS_WINCE
2993 {
2994 /* On Windows CE, we adjust datadir dynamically to installation location. */
2995 const char *data_dir = _dbus_getenv ("DBUS_DATADIR");
2996
2997 if (data_dir != NULL)
2998 {
2999 if (!_dbus_string_append (&servicedir_path, data_dir))
3000 goto oom;
3001
3002 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3003 goto oom;
3004 }
3005 }
3006 #else
3007 /*
3008 the code for accessing services requires absolute base pathes
3009 in case DBUS_DATADIR is relative make it absolute
3010 */
3011 #ifdef DBUS_WIN
3012 {
3013 DBusString p;
3014
3015 _dbus_string_init_const (&p, DBUS_DATADIR);
3016
3017 if (!_dbus_path_is_absolute (&p))
3018 {
3019 char install_root[1000];
3020 if (_dbus_get_install_root (install_root, sizeof(install_root)))
3021 if (!_dbus_string_append (&servicedir_path, install_root))
3022 goto oom;
3023 }
3024 }
3025 #endif
3026 if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR))
3027 goto oom;
3028
3029 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3030 goto oom;
3031 #endif
3032
3033 common_progs = _dbus_getenv ("CommonProgramFiles");
3034
3035 if (common_progs != NULL)
3036 {
3037 if (!_dbus_string_append (&servicedir_path, common_progs))
3038 goto oom;
3039
3040 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3041 goto oom;
3042 }
3043
3044 if (!_dbus_split_paths_and_append (&servicedir_path,
3045 DBUS_STANDARD_SESSION_SERVICEDIR,
3046 dirs))
3047 goto oom;
3048
3049 _dbus_string_free (&servicedir_path);
3050 return TRUE;
3051
3052 oom:
3053 _dbus_string_free (&servicedir_path);
3054 return FALSE;
3055 }
3056
3057 /**
3058 * Returns the standard directories for a system bus to look for service
3059 * activation files
3060 *
3061 * On UNIX this should be the standard xdg freedesktop.org data directories:
3062 *
3063 * XDG_DATA_DIRS=${XDG_DATA_DIRS-/usr/local/share:/usr/share}
3064 *
3065 * and
3066 *
3067 * DBUS_DATADIR
3068 *
3069 * On Windows there is no system bus and this function can return nothing.
3070 *
3071 * @param dirs the directory list we are returning
3072 * @returns #FALSE on OOM
3073 */
3074
3075 dbus_bool_t
_dbus_get_standard_system_servicedirs(DBusList ** dirs)3076 _dbus_get_standard_system_servicedirs (DBusList **dirs)
3077 {
3078 *dirs = NULL;
3079 return TRUE;
3080 }
3081
3082 _DBUS_DEFINE_GLOBAL_LOCK (atomic);
3083
3084 /**
3085 * Atomically increments an integer
3086 *
3087 * @param atomic pointer to the integer to increment
3088 * @returns the value before incrementing
3089 *
3090 */
3091 dbus_int32_t
_dbus_atomic_inc(DBusAtomic * atomic)3092 _dbus_atomic_inc (DBusAtomic *atomic)
3093 {
3094 // +/- 1 is needed here!
3095 // no volatile argument with mingw
3096 return InterlockedIncrement (&atomic->value) - 1;
3097 }
3098
3099 /**
3100 * Atomically decrement an integer
3101 *
3102 * @param atomic pointer to the integer to decrement
3103 * @returns the value before decrementing
3104 *
3105 */
3106 dbus_int32_t
_dbus_atomic_dec(DBusAtomic * atomic)3107 _dbus_atomic_dec (DBusAtomic *atomic)
3108 {
3109 // +/- 1 is needed here!
3110 // no volatile argument with mingw
3111 return InterlockedDecrement (&atomic->value) + 1;
3112 }
3113
3114 /**
3115 * Atomically get the value of an integer. It may change at any time
3116 * thereafter, so this is mostly only useful for assertions.
3117 *
3118 * @param atomic pointer to the integer to get
3119 * @returns the value at this moment
3120 */
3121 dbus_int32_t
_dbus_atomic_get(DBusAtomic * atomic)3122 _dbus_atomic_get (DBusAtomic *atomic)
3123 {
3124 /* this is what GLib does, hopefully it's right... */
3125 MemoryBarrier ();
3126 return atomic->value;
3127 }
3128
3129 /**
3130 * Called when the bus daemon is signaled to reload its configuration; any
3131 * caches should be nuked. Of course any caches that need explicit reload
3132 * are probably broken, but c'est la vie.
3133 *
3134 *
3135 */
3136 void
_dbus_flush_caches(void)3137 _dbus_flush_caches (void)
3138 {
3139 }
3140
3141 /**
3142 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently
3143 * for Winsock so is abstracted)
3144 *
3145 * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK
3146 */
3147 dbus_bool_t
_dbus_get_is_errno_eagain_or_ewouldblock(void)3148 _dbus_get_is_errno_eagain_or_ewouldblock (void)
3149 {
3150 return errno == WSAEWOULDBLOCK;
3151 }
3152
3153 /**
3154 * return the absolute path of the dbus installation
3155 *
3156 * @param s buffer for installation path
3157 * @param len length of buffer
3158 * @returns #FALSE on failure
3159 */
3160 dbus_bool_t
_dbus_get_install_root(char * prefix,int len)3161 _dbus_get_install_root(char *prefix, int len)
3162 {
3163 //To find the prefix, we cut the filename and also \bin\ if present
3164 DWORD pathLength;
3165 char *lastSlash;
3166 SetLastError( 0 );
3167 pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len);
3168 if ( pathLength == 0 || GetLastError() != 0 ) {
3169 *prefix = '\0';
3170 return FALSE;
3171 }
3172 lastSlash = _mbsrchr(prefix, '\\');
3173 if (lastSlash == NULL) {
3174 *prefix = '\0';
3175 return FALSE;
3176 }
3177 //cut off binary name
3178 lastSlash[1] = 0;
3179
3180 //cut possible "\\bin"
3181
3182 //this fails if we are in a double-byte system codepage and the
3183 //folder's name happens to end with the *bytes*
3184 //"\\bin"... (I.e. the second byte of some Han character and then
3185 //the Latin "bin", but that is not likely I think...
3186 if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0)
3187 lastSlash[-3] = 0;
3188 else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0)
3189 lastSlash[-9] = 0;
3190 else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0)
3191 lastSlash[-11] = 0;
3192
3193 return TRUE;
3194 }
3195
3196 /**
3197 find config file either from installation or build root according to
3198 the following path layout
3199 install-root/
3200 bin/dbus-daemon[d].exe
3201 etc/<config-file>.conf *or* etc/dbus-1/<config-file>.conf
3202 (the former above is what dbus4win uses, the latter above is
3203 what a "normal" Unix-style "make install" uses)
3204
3205 build-root/
3206 bin/dbus-daemon[d].exe
3207 bus/<config-file>.conf
3208 */
3209 dbus_bool_t
_dbus_get_config_file_name(DBusString * config_file,char * s)3210 _dbus_get_config_file_name(DBusString *config_file, char *s)
3211 {
3212 char path[MAX_PATH*2];
3213 int path_size = sizeof(path);
3214
3215 if (!_dbus_get_install_root(path,path_size))
3216 return FALSE;
3217
3218 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3219 return FALSE;
3220 strcat(path,"etc\\");
3221 strcat(path,s);
3222 if (_dbus_file_exists(path))
3223 {
3224 // find path from executable
3225 if (!_dbus_string_append (config_file, path))
3226 return FALSE;
3227 }
3228 else
3229 {
3230 if (!_dbus_get_install_root(path,path_size))
3231 return FALSE;
3232 if(strlen(s) + 11 + strlen(path) > sizeof(path)-2)
3233 return FALSE;
3234 strcat(path,"etc\\dbus-1\\");
3235 strcat(path,s);
3236
3237 if (_dbus_file_exists(path))
3238 {
3239 if (!_dbus_string_append (config_file, path))
3240 return FALSE;
3241 }
3242 else
3243 {
3244 if (!_dbus_get_install_root(path,path_size))
3245 return FALSE;
3246 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3247 return FALSE;
3248 strcat(path,"bus\\");
3249 strcat(path,s);
3250
3251 if (_dbus_file_exists(path))
3252 {
3253 if (!_dbus_string_append (config_file, path))
3254 return FALSE;
3255 }
3256 }
3257 }
3258 return TRUE;
3259 }
3260
3261 /**
3262 * Append the absolute path of the system.conf file
3263 * (there is no system bus on Windows so this can just
3264 * return FALSE and print a warning or something)
3265 *
3266 * @param str the string to append to
3267 * @returns #FALSE if no memory
3268 */
3269 dbus_bool_t
_dbus_append_system_config_file(DBusString * str)3270 _dbus_append_system_config_file (DBusString *str)
3271 {
3272 return _dbus_get_config_file_name(str, "system.conf");
3273 }
3274
3275 /**
3276 * Append the absolute path of the session.conf file.
3277 *
3278 * @param str the string to append to
3279 * @returns #FALSE if no memory
3280 */
3281 dbus_bool_t
_dbus_append_session_config_file(DBusString * str)3282 _dbus_append_session_config_file (DBusString *str)
3283 {
3284 return _dbus_get_config_file_name(str, "session.conf");
3285 }
3286
3287 /* See comment in dbus-sysdeps-unix.c */
3288 dbus_bool_t
_dbus_lookup_session_address(dbus_bool_t * supported,DBusString * address,DBusError * error)3289 _dbus_lookup_session_address (dbus_bool_t *supported,
3290 DBusString *address,
3291 DBusError *error)
3292 {
3293 /* Probably fill this in with something based on COM? */
3294 *supported = FALSE;
3295 return TRUE;
3296 }
3297
3298 /**
3299 * Appends the directory in which a keyring for the given credentials
3300 * should be stored. The credentials should have either a Windows or
3301 * UNIX user in them. The directory should be an absolute path.
3302 *
3303 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably
3304 * be something else, since the dotfile convention is not normal on Windows.
3305 *
3306 * @param directory string to append directory to
3307 * @param credentials credentials the directory should be for
3308 *
3309 * @returns #FALSE on no memory
3310 */
3311 dbus_bool_t
_dbus_append_keyring_directory_for_credentials(DBusString * directory,DBusCredentials * credentials)3312 _dbus_append_keyring_directory_for_credentials (DBusString *directory,
3313 DBusCredentials *credentials)
3314 {
3315 DBusString homedir;
3316 DBusString dotdir;
3317 const char *homepath;
3318 const char *homedrive;
3319
3320 _dbus_assert (credentials != NULL);
3321 _dbus_assert (!_dbus_credentials_are_anonymous (credentials));
3322
3323 if (!_dbus_string_init (&homedir))
3324 return FALSE;
3325
3326 homedrive = _dbus_getenv("HOMEDRIVE");
3327 if (homedrive != NULL && *homedrive != '\0')
3328 {
3329 _dbus_string_append(&homedir,homedrive);
3330 }
3331
3332 homepath = _dbus_getenv("HOMEPATH");
3333 if (homepath != NULL && *homepath != '\0')
3334 {
3335 _dbus_string_append(&homedir,homepath);
3336 }
3337
3338 #ifdef DBUS_BUILD_TESTS
3339 {
3340 const char *override;
3341
3342 override = _dbus_getenv ("DBUS_TEST_HOMEDIR");
3343 if (override != NULL && *override != '\0')
3344 {
3345 _dbus_string_set_length (&homedir, 0);
3346 if (!_dbus_string_append (&homedir, override))
3347 goto failed;
3348
3349 _dbus_verbose ("Using fake homedir for testing: %s\n",
3350 _dbus_string_get_const_data (&homedir));
3351 }
3352 else
3353 {
3354 static dbus_bool_t already_warned = FALSE;
3355 if (!already_warned)
3356 {
3357 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3358 already_warned = TRUE;
3359 }
3360 }
3361 }
3362 #endif
3363
3364 #ifdef DBUS_WINCE
3365 /* It's not possible to create a .something directory in Windows CE
3366 using the file explorer. */
3367 #define KEYRING_DIR "dbus-keyrings"
3368 #else
3369 #define KEYRING_DIR ".dbus-keyrings"
3370 #endif
3371
3372 _dbus_string_init_const (&dotdir, KEYRING_DIR);
3373 if (!_dbus_concat_dir_and_file (&homedir,
3374 &dotdir))
3375 goto failed;
3376
3377 if (!_dbus_string_copy (&homedir, 0,
3378 directory, _dbus_string_get_length (directory))) {
3379 goto failed;
3380 }
3381
3382 _dbus_string_free (&homedir);
3383 return TRUE;
3384
3385 failed:
3386 _dbus_string_free (&homedir);
3387 return FALSE;
3388 }
3389
3390 /** Checks if a file exists
3391 *
3392 * @param file full path to the file
3393 * @returns #TRUE if file exists
3394 */
3395 dbus_bool_t
_dbus_file_exists(const char * file)3396 _dbus_file_exists (const char *file)
3397 {
3398 DWORD attributes = GetFileAttributesA (file);
3399
3400 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND)
3401 return TRUE;
3402 else
3403 return FALSE;
3404 }
3405
3406 /**
3407 * A wrapper around strerror() because some platforms
3408 * may be lame and not have strerror().
3409 *
3410 * @param error_number errno.
3411 * @returns error description.
3412 */
3413 const char*
_dbus_strerror(int error_number)3414 _dbus_strerror (int error_number)
3415 {
3416 #ifdef DBUS_WINCE
3417 // TODO
3418 return "unknown";
3419 #else
3420 const char *msg;
3421
3422 switch (error_number)
3423 {
3424 case WSAEINTR:
3425 return "Interrupted function call";
3426 case WSAEACCES:
3427 return "Permission denied";
3428 case WSAEFAULT:
3429 return "Bad address";
3430 case WSAEINVAL:
3431 return "Invalid argument";
3432 case WSAEMFILE:
3433 return "Too many open files";
3434 case WSAEWOULDBLOCK:
3435 return "Resource temporarily unavailable";
3436 case WSAEINPROGRESS:
3437 return "Operation now in progress";
3438 case WSAEALREADY:
3439 return "Operation already in progress";
3440 case WSAENOTSOCK:
3441 return "Socket operation on nonsocket";
3442 case WSAEDESTADDRREQ:
3443 return "Destination address required";
3444 case WSAEMSGSIZE:
3445 return "Message too long";
3446 case WSAEPROTOTYPE:
3447 return "Protocol wrong type for socket";
3448 case WSAENOPROTOOPT:
3449 return "Bad protocol option";
3450 case WSAEPROTONOSUPPORT:
3451 return "Protocol not supported";
3452 case WSAESOCKTNOSUPPORT:
3453 return "Socket type not supported";
3454 case WSAEOPNOTSUPP:
3455 return "Operation not supported";
3456 case WSAEPFNOSUPPORT:
3457 return "Protocol family not supported";
3458 case WSAEAFNOSUPPORT:
3459 return "Address family not supported by protocol family";
3460 case WSAEADDRINUSE:
3461 return "Address already in use";
3462 case WSAEADDRNOTAVAIL:
3463 return "Cannot assign requested address";
3464 case WSAENETDOWN:
3465 return "Network is down";
3466 case WSAENETUNREACH:
3467 return "Network is unreachable";
3468 case WSAENETRESET:
3469 return "Network dropped connection on reset";
3470 case WSAECONNABORTED:
3471 return "Software caused connection abort";
3472 case WSAECONNRESET:
3473 return "Connection reset by peer";
3474 case WSAENOBUFS:
3475 return "No buffer space available";
3476 case WSAEISCONN:
3477 return "Socket is already connected";
3478 case WSAENOTCONN:
3479 return "Socket is not connected";
3480 case WSAESHUTDOWN:
3481 return "Cannot send after socket shutdown";
3482 case WSAETIMEDOUT:
3483 return "Connection timed out";
3484 case WSAECONNREFUSED:
3485 return "Connection refused";
3486 case WSAEHOSTDOWN:
3487 return "Host is down";
3488 case WSAEHOSTUNREACH:
3489 return "No route to host";
3490 case WSAEPROCLIM:
3491 return "Too many processes";
3492 case WSAEDISCON:
3493 return "Graceful shutdown in progress";
3494 case WSATYPE_NOT_FOUND:
3495 return "Class type not found";
3496 case WSAHOST_NOT_FOUND:
3497 return "Host not found";
3498 case WSATRY_AGAIN:
3499 return "Nonauthoritative host not found";
3500 case WSANO_RECOVERY:
3501 return "This is a nonrecoverable error";
3502 case WSANO_DATA:
3503 return "Valid name, no data record of requested type";
3504 case WSA_INVALID_HANDLE:
3505 return "Specified event object handle is invalid";
3506 case WSA_INVALID_PARAMETER:
3507 return "One or more parameters are invalid";
3508 case WSA_IO_INCOMPLETE:
3509 return "Overlapped I/O event object not in signaled state";
3510 case WSA_IO_PENDING:
3511 return "Overlapped operations will complete later";
3512 case WSA_NOT_ENOUGH_MEMORY:
3513 return "Insufficient memory available";
3514 case WSA_OPERATION_ABORTED:
3515 return "Overlapped operation aborted";
3516 #ifdef WSAINVALIDPROCTABLE
3517
3518 case WSAINVALIDPROCTABLE:
3519 return "Invalid procedure table from service provider";
3520 #endif
3521 #ifdef WSAINVALIDPROVIDER
3522
3523 case WSAINVALIDPROVIDER:
3524 return "Invalid service provider version number";
3525 #endif
3526 #ifdef WSAPROVIDERFAILEDINIT
3527
3528 case WSAPROVIDERFAILEDINIT:
3529 return "Unable to initialize a service provider";
3530 #endif
3531
3532 case WSASYSCALLFAILURE:
3533 return "System call failure";
3534 }
3535 msg = strerror (error_number);
3536 if (msg == NULL)
3537 msg = "unknown";
3538
3539 return msg;
3540 #endif //DBUS_WINCE
3541 }
3542
3543 /**
3544 * Assigns an error name and message corresponding to a Win32 error
3545 * code to a DBusError. Does nothing if error is #NULL.
3546 *
3547 * @param error the error.
3548 * @param code the Win32 error code
3549 */
3550 void
_dbus_win_set_error_from_win_error(DBusError * error,int code)3551 _dbus_win_set_error_from_win_error (DBusError *error,
3552 int code)
3553 {
3554 char *msg;
3555
3556 /* As we want the English message, use the A API */
3557 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
3558 FORMAT_MESSAGE_IGNORE_INSERTS |
3559 FORMAT_MESSAGE_FROM_SYSTEM,
3560 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US),
3561 (LPSTR) &msg, 0, NULL);
3562 if (msg)
3563 {
3564 char *msg_copy;
3565
3566 msg_copy = dbus_malloc (strlen (msg));
3567 strcpy (msg_copy, msg);
3568 LocalFree (msg);
3569
3570 dbus_set_error (error, "win32.error", "%s", msg_copy);
3571 }
3572 else
3573 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
3574 }
3575
3576 void
_dbus_win_warn_win_error(const char * message,int code)3577 _dbus_win_warn_win_error (const char *message,
3578 int code)
3579 {
3580 DBusError error;
3581
3582 dbus_error_init (&error);
3583 _dbus_win_set_error_from_win_error (&error, code);
3584 _dbus_warn ("%s: %s\n", message, error.message);
3585 dbus_error_free (&error);
3586 }
3587
3588 /**
3589 * Removes a directory; Directory must be empty
3590 *
3591 * @param filename directory filename
3592 * @param error initialized error object
3593 * @returns #TRUE on success
3594 */
3595 dbus_bool_t
_dbus_delete_directory(const DBusString * filename,DBusError * error)3596 _dbus_delete_directory (const DBusString *filename,
3597 DBusError *error)
3598 {
3599 const char *filename_c;
3600
3601 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3602
3603 filename_c = _dbus_string_get_const_data (filename);
3604
3605 if (RemoveDirectoryA (filename_c) == 0)
3606 {
3607 char *emsg = _dbus_win_error_string (GetLastError ());
3608 dbus_set_error (error, _dbus_win_error_from_last_error (),
3609 "Failed to remove directory %s: %s",
3610 filename_c, emsg);
3611 _dbus_win_free_error_string (emsg);
3612 return FALSE;
3613 }
3614
3615 return TRUE;
3616 }
3617
3618 /**
3619 * Checks whether the filename is an absolute path
3620 *
3621 * @param filename the filename
3622 * @returns #TRUE if an absolute path
3623 */
3624 dbus_bool_t
_dbus_path_is_absolute(const DBusString * filename)3625 _dbus_path_is_absolute (const DBusString *filename)
3626 {
3627 if (_dbus_string_get_length (filename) > 0)
3628 return _dbus_string_get_byte (filename, 1) == ':'
3629 || _dbus_string_get_byte (filename, 0) == '\\'
3630 || _dbus_string_get_byte (filename, 0) == '/';
3631 else
3632 return FALSE;
3633 }
3634
3635 dbus_bool_t
_dbus_check_setuid(void)3636 _dbus_check_setuid (void)
3637 {
3638 return FALSE;
3639 }
3640
3641 /** @} end of sysdeps-win */
3642 /* tests in dbus-sysdeps-util.c */
3643
3644