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)
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) 2006-2013 Ralf Habacker <ralf.habacker@freenet.de>
11 * Licensed under the Academic Free License version 2.1
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.
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.
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
31 #define STRSAFE_NO_DEPRECATE
35 #define _WIN32_WINNT 0x0501
39 #include "dbus-internals.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"
59 /* Declarations missing in mingw's and windows sdk 7.0 headers */
60 extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid);
61 extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid);
72 #include <sys/types.h>
75 #ifdef HAVE_WS2TCPIP_H
76 /* getaddrinfo for Windows CE (and Windows). */
81 // needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo)
88 #endif // HAVE_WSPIAPI_H
94 typedef int socklen_t;
98 _dbus_win_set_errno (int err)
107 static BOOL is_winxp_sp3_or_lower();
110 * _MIB_TCPROW_EX and friends are not available in system headers
111 * and are mapped to attribute identical ...OWNER_PID typedefs.
113 typedef MIB_TCPROW_OWNER_PID _MIB_TCPROW_EX;
114 typedef MIB_TCPTABLE_OWNER_PID MIB_TCPTABLE_EX;
115 typedef PMIB_TCPTABLE_OWNER_PID PMIB_TCPTABLE_EX;
116 typedef DWORD (WINAPI *ProcAllocateAndGetTcpExtTableFromStack)(PMIB_TCPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
117 static ProcAllocateAndGetTcpExtTableFromStack lpfnAllocateAndGetTcpExTableFromStack = NULL;
119 static BOOL load_ex_ip_helper_procedures(void)
121 HMODULE hModule = LoadLibrary ("iphlpapi.dll");
125 lpfnAllocateAndGetTcpExTableFromStack = (ProcAllocateAndGetTcpExtTableFromStack)GetProcAddress (hModule, "AllocateAndGetTcpExTableFromStack");
126 if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
133 * @brief return peer process id from tcp handle for localhost connections
134 * @param handle tcp socket descriptor
135 * @return process id or 0 in case the process id could not be fetched
138 _dbus_get_peer_pid_from_tcp_handle (int handle)
140 struct sockaddr_storage addr;
141 socklen_t len = sizeof (addr);
146 MIB_TCPTABLE_OWNER_PID *tcp_table;
148 dbus_bool_t is_localhost = FALSE;
150 getpeername (handle, (struct sockaddr *) &addr, &len);
152 if (addr.ss_family == AF_INET)
154 struct sockaddr_in *s = (struct sockaddr_in *) &addr;
155 peer_port = ntohs (s->sin_port);
156 is_localhost = (htonl (s->sin_addr.s_addr) == INADDR_LOOPBACK);
158 else if (addr.ss_family == AF_INET6)
160 _dbus_verbose ("FIXME [61922]: IPV6 support not working on windows\n");
163 struct sockaddr_in6 *s = (struct sockaddr_in6 * )&addr;
164 peer_port = ntohs (s->sin6_port);
165 is_localhost = (memcmp(s->sin6_addr.s6_addr, in6addr_loopback.s6_addr, 16) == 0);
166 _dbus_verbose ("IPV6 %08x %08x\n", s->sin6_addr.s6_addr, in6addr_loopback.s6_addr);
171 _dbus_verbose ("no idea what address family %d is\n", addr.ss_family);
177 _dbus_verbose ("could not fetch process id from remote process\n");
184 ("Error not been able to fetch tcp peer port from connection\n");
188 if (is_winxp_sp3_or_lower ())
190 DWORD errorCode, dwSize;
191 PMIB_TCPTABLE_EX lpBuffer = NULL;
193 if (!load_ex_ip_helper_procedures ())
196 ("Error not been able to load iphelper procedures\n");
199 errorCode = (*lpfnAllocateAndGetTcpExTableFromStack) (&lpBuffer, TRUE, GetProcessHeap(), 0, 2);
200 if (errorCode != NO_ERROR)
203 ("Error not been able to call AllocateAndGetTcpExTableFromStack()\n");
208 for (dwSize = 0; dwSize < lpBuffer->dwNumEntries; dwSize++)
210 int local_port = ntohs (lpBuffer->table[dwSize].dwLocalPort);
211 if (local_port == peer_port)
213 result = lpBuffer->table[dwSize].dwOwningPid;
219 HeapFree (GetProcessHeap(), 0, lpBuffer);
221 _dbus_verbose ("got pid %d\n", (int)result);
226 GetExtendedTcpTable (NULL, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) == ERROR_INSUFFICIENT_BUFFER)
228 tcp_table = (MIB_TCPTABLE_OWNER_PID *) dbus_malloc (size);
229 if (tcp_table == NULL)
231 _dbus_verbose ("Error allocating memory\n");
236 if ((result = GetExtendedTcpTable (tcp_table, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) != NO_ERROR)
238 _dbus_verbose ("Error fetching tcp table %d\n", result);
239 dbus_free (tcp_table);
244 for (i = 0; i < tcp_table->dwNumEntries; i++)
246 MIB_TCPROW_OWNER_PID *p = &tcp_table->table[i];
247 int local_port = ntohs (p->dwLocalPort);
248 if (p->dwState == MIB_TCP_STATE_ESTAB && local_port == peer_port)
249 result = p->dwOwningPid;
252 _dbus_verbose ("got pid %d\n", result);
253 dbus_free (tcp_table);
257 /* Convert GetLastError() to a dbus error. */
259 _dbus_win_error_from_last_error (void)
261 switch (GetLastError())
264 return DBUS_ERROR_FAILED;
266 case ERROR_NO_MORE_FILES:
267 case ERROR_TOO_MANY_OPEN_FILES:
268 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
270 case ERROR_ACCESS_DENIED:
271 case ERROR_CANNOT_MAKE:
272 return DBUS_ERROR_ACCESS_DENIED;
274 case ERROR_NOT_ENOUGH_MEMORY:
275 return DBUS_ERROR_NO_MEMORY;
277 case ERROR_FILE_EXISTS:
278 return DBUS_ERROR_FILE_EXISTS;
280 case ERROR_FILE_NOT_FOUND:
281 case ERROR_PATH_NOT_FOUND:
282 return DBUS_ERROR_FILE_NOT_FOUND;
285 return DBUS_ERROR_FAILED;
290 _dbus_win_error_string (int error_number)
294 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
295 FORMAT_MESSAGE_IGNORE_INSERTS |
296 FORMAT_MESSAGE_FROM_SYSTEM,
297 NULL, error_number, 0,
298 (LPSTR) &msg, 0, NULL);
300 if (msg[strlen (msg) - 1] == '\n')
301 msg[strlen (msg) - 1] = '\0';
302 if (msg[strlen (msg) - 1] == '\r')
303 msg[strlen (msg) - 1] = '\0';
309 _dbus_win_free_error_string (char *string)
320 * Thin wrapper around the read() system call that appends
321 * the data it reads to the DBusString buffer. It appends
322 * up to the given count, and returns the same value
323 * and same errno as read(). The only exception is that
324 * _dbus_read_socket() handles EINTR for you.
325 * _dbus_read_socket() can return ENOMEM, even though
326 * regular UNIX read doesn't.
328 * @param fd the file descriptor to read from
329 * @param buffer the buffer to append data to
330 * @param count the amount of data to read
331 * @returns the number of bytes read or -1
335 _dbus_read_socket (int fd,
343 _dbus_assert (count >= 0);
345 start = _dbus_string_get_length (buffer);
347 if (!_dbus_string_lengthen (buffer, count))
349 _dbus_win_set_errno (ENOMEM);
353 data = _dbus_string_get_data_len (buffer, start, count);
357 _dbus_verbose ("recv: count=%d fd=%d\n", count, fd);
358 bytes_read = recv (fd, data, count, 0);
360 if (bytes_read == SOCKET_ERROR)
362 DBUS_SOCKET_SET_ERRNO();
363 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno);
367 _dbus_verbose ("recv: = %d\n", bytes_read);
375 /* put length back (note that this doesn't actually realloc anything) */
376 _dbus_string_set_length (buffer, start);
382 /* put length back (doesn't actually realloc) */
383 _dbus_string_set_length (buffer, start + bytes_read);
387 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
395 * Thin wrapper around the write() system call that writes a part of a
396 * DBusString and handles EINTR for you.
398 * @param fd the file descriptor to write
399 * @param buffer the buffer to write data from
400 * @param start the first byte in the buffer to write
401 * @param len the number of bytes to try to write
402 * @returns the number of bytes written or -1 on error
405 _dbus_write_socket (int fd,
406 const DBusString *buffer,
413 data = _dbus_string_get_const_data_len (buffer, start, len);
417 _dbus_verbose ("send: len=%d fd=%d\n", len, fd);
418 bytes_written = send (fd, data, len, 0);
420 if (bytes_written == SOCKET_ERROR)
422 DBUS_SOCKET_SET_ERRNO();
423 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ());
427 _dbus_verbose ("send: = %d\n", bytes_written);
429 if (bytes_written < 0 && errno == EINTR)
433 if (bytes_written > 0)
434 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
437 return bytes_written;
442 * Closes a file descriptor.
444 * @param fd the file descriptor
445 * @param error error object
446 * @returns #FALSE if error set
449 _dbus_close_socket (int fd,
452 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
455 if (closesocket (fd) == SOCKET_ERROR)
457 DBUS_SOCKET_SET_ERRNO ();
462 dbus_set_error (error, _dbus_error_from_errno (errno),
463 "Could not close socket: socket=%d, , %s",
464 fd, _dbus_strerror_from_errno ());
467 _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd);
473 * Sets the file descriptor to be close
474 * on exec. Should be called for all file
475 * descriptors in D-Bus code.
477 * @param fd the file descriptor
480 _dbus_fd_set_close_on_exec (intptr_t handle)
482 if ( !SetHandleInformation( (HANDLE) handle,
483 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE,
484 0 /*disable both flags*/ ) )
486 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError());
491 * Sets a file descriptor to be nonblocking.
493 * @param fd the file descriptor.
494 * @param error address of error location.
495 * @returns #TRUE on success.
498 _dbus_set_fd_nonblocking (int handle,
503 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
505 if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR)
507 DBUS_SOCKET_SET_ERRNO ();
508 dbus_set_error (error, _dbus_error_from_errno (errno),
509 "Failed to set socket %d:%d to nonblocking: %s", handle,
510 _dbus_strerror_from_errno ());
519 * Like _dbus_write() but will use writev() if possible
520 * to write both buffers in sequence. The return value
521 * is the number of bytes written in the first buffer,
522 * plus the number written in the second. If the first
523 * buffer is written successfully and an error occurs
524 * writing the second, the number of bytes in the first
525 * is returned (i.e. the error is ignored), on systems that
526 * don't have writev. Handles EINTR for you.
527 * The second buffer may be #NULL.
529 * @param fd the file descriptor
530 * @param buffer1 first buffer
531 * @param start1 first byte to write in first buffer
532 * @param len1 number of bytes to write from first buffer
533 * @param buffer2 second buffer, or #NULL
534 * @param start2 first byte to write in second buffer
535 * @param len2 number of bytes to write in second buffer
536 * @returns total bytes written from both buffers, or -1 on error
539 _dbus_write_socket_two (int fd,
540 const DBusString *buffer1,
543 const DBusString *buffer2,
553 _dbus_assert (buffer1 != NULL);
554 _dbus_assert (start1 >= 0);
555 _dbus_assert (start2 >= 0);
556 _dbus_assert (len1 >= 0);
557 _dbus_assert (len2 >= 0);
560 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
563 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
571 vectors[0].buf = (char*) data1;
572 vectors[0].len = len1;
573 vectors[1].buf = (char*) data2;
574 vectors[1].len = len2;
578 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd);
587 if (rc == SOCKET_ERROR)
589 DBUS_SOCKET_SET_ERRNO ();
590 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ());
594 _dbus_verbose ("WSASend: = %ld\n", bytes_written);
596 if (bytes_written < 0 && errno == EINTR)
599 return bytes_written;
603 _dbus_socket_is_invalid (int fd)
605 return fd == INVALID_SOCKET ? TRUE : FALSE;
611 * Opens the client side of a Windows named pipe. The connection D-BUS
612 * file descriptor index is returned. It is set up as nonblocking.
614 * @param path the path to named pipe socket
615 * @param error return location for error code
616 * @returns connection D-BUS file descriptor or -1 on error
619 _dbus_connect_named_pipe (const char *path,
622 _dbus_assert_not_reached ("not implemented");
630 _dbus_win_startup_winsock (void)
632 /* Straight from MSDN, deuglified */
634 static dbus_bool_t beenhere = FALSE;
636 WORD wVersionRequested;
643 wVersionRequested = MAKEWORD (2, 0);
645 err = WSAStartup (wVersionRequested, &wsaData);
648 _dbus_assert_not_reached ("Could not initialize WinSock");
652 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL
653 * supports versions greater than 2.0 in addition to 2.0, it will
654 * still return 2.0 in wVersion since that is the version we
657 if (LOBYTE (wsaData.wVersion) != 2 ||
658 HIBYTE (wsaData.wVersion) != 0)
660 _dbus_assert_not_reached ("No usable WinSock found");
675 /************************************************************************
679 ************************************************************************/
682 * Measure the message length without terminating nul
684 int _dbus_printf_string_upper_bound (const char *format,
687 /* MSVCRT's vsnprintf semantics are a bit different */
693 bufsize = sizeof (buf);
694 DBUS_VA_COPY (args_copy, args);
695 len = _vsnprintf (buf, bufsize - 1, format, args_copy);
698 while (len == -1) /* try again */
704 p = malloc (bufsize);
709 DBUS_VA_COPY (args_copy, args);
710 len = _vsnprintf (p, bufsize - 1, format, args_copy);
720 * Returns the UTF-16 form of a UTF-8 string. The result should be
721 * freed with dbus_free() when no longer needed.
723 * @param str the UTF-8 string
724 * @param error return location for error code
727 _dbus_win_utf8_to_utf16 (const char *str,
734 _dbus_string_init_const (&s, str);
736 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s)))
738 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8");
742 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
746 _dbus_win_set_error_from_win_error (error, GetLastError ());
750 retval = dbus_new (wchar_t, n);
754 _DBUS_SET_OOM (error);
758 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n)
761 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency");
769 * Returns the UTF-8 form of a UTF-16 string. The result should be
770 * freed with dbus_free() when no longer needed.
772 * @param str the UTF-16 string
773 * @param error return location for error code
776 _dbus_win_utf16_to_utf8 (const wchar_t *str,
782 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
786 _dbus_win_set_error_from_win_error (error, GetLastError ());
790 retval = dbus_malloc (n);
794 _DBUS_SET_OOM (error);
798 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n)
801 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency");
813 /************************************************************************
816 ************************************************************************/
819 _dbus_win_account_to_sid (const wchar_t *waccount,
823 dbus_bool_t retval = FALSE;
824 DWORD sid_length, wdomain_length;
832 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length,
833 NULL, &wdomain_length, &use) &&
834 GetLastError () != ERROR_INSUFFICIENT_BUFFER)
836 _dbus_win_set_error_from_win_error (error, GetLastError ());
840 *ppsid = dbus_malloc (sid_length);
843 _DBUS_SET_OOM (error);
847 wdomain = dbus_new (wchar_t, wdomain_length);
850 _DBUS_SET_OOM (error);
854 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length,
855 wdomain, &wdomain_length, &use))
857 _dbus_win_set_error_from_win_error (error, GetLastError ());
861 if (!IsValidSid ((PSID) *ppsid))
863 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID");
881 /** @} end of sysdeps-win */
885 * The only reason this is separate from _dbus_getpid() is to allow it
886 * on Windows for logging but not for other purposes.
888 * @returns process ID to put in log messages
891 _dbus_pid_for_log (void)
893 return _dbus_getpid ();
898 static BOOL is_winxp_sp3_or_lower()
900 OSVERSIONINFOEX osvi;
901 DWORDLONG dwlConditionMask = 0;
902 int op=VER_LESS_EQUAL;
904 // Initialize the OSVERSIONINFOEX structure.
906 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
907 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
908 osvi.dwMajorVersion = 5;
909 osvi.dwMinorVersion = 1;
910 osvi.wServicePackMajor = 3;
911 osvi.wServicePackMinor = 0;
913 // Initialize the condition mask.
915 VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, op );
916 VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, op );
917 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, op );
918 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMINOR, op );
922 return VerifyVersionInfo(
924 VER_MAJORVERSION | VER_MINORVERSION |
925 VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
930 * @param sid points to sid buffer, need to be freed with LocalFree()
931 * @param process_id the process id for which the sid should be returned
932 * @returns process sid
935 _dbus_getsid(char **sid, dbus_pid_t process_id)
937 HANDLE process_token = INVALID_HANDLE_VALUE;
938 TOKEN_USER *token_user = NULL;
943 HANDLE process_handle = OpenProcess(is_winxp_sp3_or_lower() ? PROCESS_QUERY_INFORMATION : PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
945 if (!OpenProcessToken (process_handle, TOKEN_QUERY, &process_token))
947 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ());
950 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n)
951 && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
952 || (token_user = alloca (n)) == NULL
953 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n))
955 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ());
958 psid = token_user->User.Sid;
959 if (!IsValidSid (psid))
961 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
964 if (!ConvertSidToStringSidA (psid, sid))
966 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
973 CloseHandle (process_handle);
974 if (process_token != INVALID_HANDLE_VALUE)
975 CloseHandle (process_token);
977 _dbus_verbose("_dbus_getsid() got '%s' and returns %d\n", *sid, retval);
982 /************************************************************************
986 ************************************************************************/
989 * Creates a full-duplex pipe (as in socketpair()).
990 * Sets both ends of the pipe nonblocking.
992 * @param fd1 return location for one end
993 * @param fd2 return location for the other end
994 * @param blocking #TRUE if pipe should be blocking
995 * @param error error return
996 * @returns #FALSE on failure (if error is set)
999 _dbus_full_duplex_pipe (int *fd1,
1001 dbus_bool_t blocking,
1004 SOCKET temp, socket1 = -1, socket2 = -1;
1005 struct sockaddr_in saddr;
1009 _dbus_win_startup_winsock ();
1011 temp = socket (AF_INET, SOCK_STREAM, 0);
1012 if (temp == INVALID_SOCKET)
1014 DBUS_SOCKET_SET_ERRNO ();
1019 saddr.sin_family = AF_INET;
1021 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1023 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR)
1025 DBUS_SOCKET_SET_ERRNO ();
1029 if (listen (temp, 1) == SOCKET_ERROR)
1031 DBUS_SOCKET_SET_ERRNO ();
1035 len = sizeof (saddr);
1036 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR)
1038 DBUS_SOCKET_SET_ERRNO ();
1042 socket1 = socket (AF_INET, SOCK_STREAM, 0);
1043 if (socket1 == INVALID_SOCKET)
1045 DBUS_SOCKET_SET_ERRNO ();
1049 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR)
1051 DBUS_SOCKET_SET_ERRNO ();
1055 socket2 = accept (temp, (struct sockaddr *) &saddr, &len);
1056 if (socket2 == INVALID_SOCKET)
1058 DBUS_SOCKET_SET_ERRNO ();
1065 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR)
1067 DBUS_SOCKET_SET_ERRNO ();
1072 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR)
1074 DBUS_SOCKET_SET_ERRNO ();
1082 _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n",
1083 *fd1, socket1, *fd2, socket2);
1090 closesocket (socket2);
1092 closesocket (socket1);
1096 dbus_set_error (error, _dbus_error_from_errno (errno),
1097 "Could not setup socket pair: %s",
1098 _dbus_strerror_from_errno ());
1104 * Wrapper for poll().
1106 * @param fds the file descriptors to poll
1107 * @param n_fds number of descriptors in the array
1108 * @param timeout_milliseconds timeout or -1 for infinite
1109 * @returns numbers of fds with revents, or <0 on error
1112 _dbus_poll (DBusPollFD *fds,
1114 int timeout_milliseconds)
1116 #define USE_CHRIS_IMPL 0
1120 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1121 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1129 #define DBUS_STACK_WSAEVENTS 256
1130 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS];
1131 WSAEVENT *pEvents = NULL;
1132 if (n_fds > DBUS_STACK_WSAEVENTS)
1133 pEvents = calloc(sizeof(WSAEVENT), n_fds);
1135 pEvents = eventsOnStack;
1138 #ifdef DBUS_ENABLE_VERBOSE_MODE
1140 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds);
1141 for (i = 0; i < n_fds; i++)
1143 DBusPollFD *fdp = &fds[i];
1146 if (fdp->events & _DBUS_POLLIN)
1147 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1149 if (fdp->events & _DBUS_POLLOUT)
1150 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1152 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1154 // FIXME: more robust code for long msg
1155 // create on heap when msg[] becomes too small
1156 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1158 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1162 msgp += sprintf (msgp, "\n");
1163 _dbus_verbose ("%s",msg);
1165 for (i = 0; i < n_fds; i++)
1167 DBusPollFD *fdp = &fds[i];
1169 long lNetworkEvents = FD_OOB;
1171 ev = WSACreateEvent();
1173 if (fdp->events & _DBUS_POLLIN)
1174 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE;
1176 if (fdp->events & _DBUS_POLLOUT)
1177 lNetworkEvents |= FD_WRITE | FD_CONNECT;
1179 WSAEventSelect(fdp->fd, ev, lNetworkEvents);
1185 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE);
1187 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1189 DBUS_SOCKET_SET_ERRNO ();
1190 if (errno != WSAEWOULDBLOCK)
1191 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ());
1194 else if (ready == WSA_WAIT_TIMEOUT)
1196 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n");
1199 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds))
1202 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready);
1204 for (i = 0; i < n_fds; i++)
1206 DBusPollFD *fdp = &fds[i];
1207 WSANETWORKEVENTS ne;
1211 WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne);
1213 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1214 fdp->revents |= _DBUS_POLLIN;
1216 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1217 fdp->revents |= _DBUS_POLLOUT;
1219 if (ne.lNetworkEvents & (FD_OOB))
1220 fdp->revents |= _DBUS_POLLERR;
1222 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1223 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1225 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1226 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1228 if (ne.lNetworkEvents & (FD_OOB))
1229 msgp += sprintf (msgp, "E:%d ", fdp->fd);
1231 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
1233 if(ne.lNetworkEvents)
1236 WSAEventSelect(fdp->fd, pEvents[i], 0);
1239 msgp += sprintf (msgp, "\n");
1240 _dbus_verbose ("%s",msg);
1244 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!");
1248 for(i = 0; i < n_fds; i++)
1250 WSACloseEvent(pEvents[i]);
1253 if (n_fds > DBUS_STACK_WSAEVENTS)
1258 #else /* USE_CHRIS_IMPL */
1260 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1261 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1264 fd_set read_set, write_set, err_set;
1270 FD_ZERO (&read_set);
1271 FD_ZERO (&write_set);
1275 #ifdef DBUS_ENABLE_VERBOSE_MODE
1277 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds);
1278 for (i = 0; i < n_fds; i++)
1280 DBusPollFD *fdp = &fds[i];
1283 if (fdp->events & _DBUS_POLLIN)
1284 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1286 if (fdp->events & _DBUS_POLLOUT)
1287 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1289 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1291 // FIXME: more robust code for long msg
1292 // create on heap when msg[] becomes too small
1293 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1295 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1299 msgp += sprintf (msgp, "\n");
1300 _dbus_verbose ("%s",msg);
1302 for (i = 0; i < n_fds; i++)
1304 DBusPollFD *fdp = &fds[i];
1306 if (fdp->events & _DBUS_POLLIN)
1307 FD_SET (fdp->fd, &read_set);
1309 if (fdp->events & _DBUS_POLLOUT)
1310 FD_SET (fdp->fd, &write_set);
1312 FD_SET (fdp->fd, &err_set);
1314 max_fd = MAX (max_fd, fdp->fd);
1317 // Avoid random lockups with send(), for lack of a better solution so far
1318 tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000;
1319 tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000;
1321 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1323 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1325 DBUS_SOCKET_SET_ERRNO ();
1326 if (errno != WSAEWOULDBLOCK)
1327 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ());
1329 else if (ready == 0)
1330 _dbus_verbose ("select: = 0\n");
1334 #ifdef DBUS_ENABLE_VERBOSE_MODE
1336 msgp += sprintf (msgp, "select: = %d:\n\t", ready);
1338 for (i = 0; i < n_fds; i++)
1340 DBusPollFD *fdp = &fds[i];
1342 if (FD_ISSET (fdp->fd, &read_set))
1343 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1345 if (FD_ISSET (fdp->fd, &write_set))
1346 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1348 if (FD_ISSET (fdp->fd, &err_set))
1349 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1351 msgp += sprintf (msgp, "\n");
1352 _dbus_verbose ("%s",msg);
1355 for (i = 0; i < n_fds; i++)
1357 DBusPollFD *fdp = &fds[i];
1361 if (FD_ISSET (fdp->fd, &read_set))
1362 fdp->revents |= _DBUS_POLLIN;
1364 if (FD_ISSET (fdp->fd, &write_set))
1365 fdp->revents |= _DBUS_POLLOUT;
1367 if (FD_ISSET (fdp->fd, &err_set))
1368 fdp->revents |= _DBUS_POLLERR;
1372 #endif /* USE_CHRIS_IMPL */
1378 /******************************************************************************
1380 Original CVS version of dbus-sysdeps.c
1382 ******************************************************************************/
1383 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
1384 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation)
1386 * Copyright (C) 2002, 2003 Red Hat, Inc.
1387 * Copyright (C) 2003 CodeFactory AB
1388 * Copyright (C) 2005 Novell, Inc.
1390 * Licensed under the Academic Free License version 2.1
1392 * This program is free software; you can redistribute it and/or modify
1393 * it under the terms of the GNU General Public License as published by
1394 * the Free Software Foundation; either version 2 of the License, or
1395 * (at your option) any later version.
1397 * This program is distributed in the hope that it will be useful,
1398 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1399 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1400 * GNU General Public License for more details.
1402 * You should have received a copy of the GNU General Public License
1403 * along with this program; if not, write to the Free Software
1404 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1410 * Exit the process, returning the given value.
1412 * @param code the exit code
1415 _dbus_exit (int code)
1421 * Creates a socket and connects to a socket at the given host
1422 * and port. The connection fd is returned, and is set up as
1425 * @param host the host name to connect to
1426 * @param port the port to connect to
1427 * @param family the address family to listen on, NULL for all
1428 * @param error return location for error code
1429 * @returns connection file descriptor or -1 on error
1432 _dbus_connect_tcp_socket (const char *host,
1437 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error);
1441 _dbus_connect_tcp_socket_with_nonce (const char *host,
1444 const char *noncefile,
1448 struct addrinfo hints;
1449 struct addrinfo *ai, *tmp;
1451 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1453 _dbus_win_startup_winsock ();
1458 hints.ai_family = AF_UNSPEC;
1459 else if (!strcmp(family, "ipv4"))
1460 hints.ai_family = AF_INET;
1461 else if (!strcmp(family, "ipv6"))
1462 hints.ai_family = AF_INET6;
1465 dbus_set_error (error,
1466 DBUS_ERROR_INVALID_ARGS,
1467 "Unknown address family %s", family);
1470 hints.ai_protocol = IPPROTO_TCP;
1471 hints.ai_socktype = SOCK_STREAM;
1472 #ifdef AI_ADDRCONFIG
1473 hints.ai_flags = AI_ADDRCONFIG;
1478 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1480 dbus_set_error (error,
1481 _dbus_error_from_errno (res),
1482 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1483 host, port, _dbus_strerror(res), res);
1490 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1492 DBUS_SOCKET_SET_ERRNO ();
1493 dbus_set_error (error,
1494 _dbus_error_from_errno (errno),
1495 "Failed to open socket: %s",
1496 _dbus_strerror_from_errno ());
1500 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1502 if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1504 DBUS_SOCKET_SET_ERRNO ();
1517 dbus_set_error (error,
1518 _dbus_error_from_errno (errno),
1519 "Failed to connect to socket \"%s:%s\" %s",
1520 host, port, _dbus_strerror_from_errno ());
1524 if (noncefile != NULL)
1526 DBusString noncefileStr;
1528 if (!_dbus_string_init (&noncefileStr) ||
1529 !_dbus_string_append(&noncefileStr, noncefile))
1532 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1536 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1538 _dbus_string_free (&noncefileStr);
1547 _dbus_fd_set_close_on_exec (fd);
1549 if (!_dbus_set_fd_nonblocking (fd, error))
1559 * Creates a socket and binds it to the given path, then listens on
1560 * the socket. The socket is set to be nonblocking. In case of port=0
1561 * a random free port is used and returned in the port parameter.
1562 * If inaddr_any is specified, the hostname is ignored.
1564 * @param host the host name to listen on
1565 * @param port the port to listen on, if zero a free port will be used
1566 * @param family the address family to listen on, NULL for all
1567 * @param retport string to return the actual port listened on
1568 * @param fds_p location to store returned file descriptors
1569 * @param error return location for errors
1570 * @returns the number of listening file descriptors or -1 on error
1574 _dbus_listen_tcp_socket (const char *host,
1577 DBusString *retport,
1581 int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1;
1582 struct addrinfo hints;
1583 struct addrinfo *ai, *tmp;
1585 // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old
1586 //That's required for family == IPv6(which is the default on Vista if family is not given)
1587 //So we use our own union instead of sockaddr_gen:
1590 struct sockaddr Address;
1591 struct sockaddr_in AddressIn;
1592 struct sockaddr_in6 AddressIn6;
1596 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1598 _dbus_win_startup_winsock ();
1603 hints.ai_family = AF_UNSPEC;
1604 else if (!strcmp(family, "ipv4"))
1605 hints.ai_family = AF_INET;
1606 else if (!strcmp(family, "ipv6"))
1607 hints.ai_family = AF_INET6;
1610 dbus_set_error (error,
1611 DBUS_ERROR_INVALID_ARGS,
1612 "Unknown address family %s", family);
1616 hints.ai_protocol = IPPROTO_TCP;
1617 hints.ai_socktype = SOCK_STREAM;
1618 #ifdef AI_ADDRCONFIG
1619 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1621 hints.ai_flags = AI_PASSIVE;
1624 redo_lookup_with_port:
1625 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1627 dbus_set_error (error,
1628 _dbus_error_from_errno (res),
1629 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1630 host ? host : "*", port, _dbus_strerror(res), res);
1637 int fd = -1, *newlisten_fd;
1638 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1640 DBUS_SOCKET_SET_ERRNO ();
1641 dbus_set_error (error,
1642 _dbus_error_from_errno (errno),
1643 "Failed to open socket: %s",
1644 _dbus_strerror_from_errno ());
1647 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1649 if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1651 DBUS_SOCKET_SET_ERRNO ();
1652 dbus_set_error (error, _dbus_error_from_errno (errno),
1653 "Failed to bind socket \"%s:%s\": %s",
1654 host ? host : "*", port, _dbus_strerror_from_errno ());
1659 if (listen (fd, 30 /* backlog */) == SOCKET_ERROR)
1661 DBUS_SOCKET_SET_ERRNO ();
1662 dbus_set_error (error, _dbus_error_from_errno (errno),
1663 "Failed to listen on socket \"%s:%s\": %s",
1664 host ? host : "*", port, _dbus_strerror_from_errno ());
1669 newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1));
1673 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1674 "Failed to allocate file handle array");
1677 listen_fd = newlisten_fd;
1678 listen_fd[nlisten_fd] = fd;
1681 if (!_dbus_string_get_length(retport))
1683 /* If the user didn't specify a port, or used 0, then
1684 the kernel chooses a port. After the first address
1685 is bound to, we need to force all remaining addresses
1686 to use the same port */
1687 if (!port || !strcmp(port, "0"))
1689 mysockaddr_gen addr;
1690 socklen_t addrlen = sizeof(addr);
1693 if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR)
1695 DBUS_SOCKET_SET_ERRNO ();
1696 dbus_set_error (error, _dbus_error_from_errno (errno),
1697 "Failed to resolve port \"%s:%s\": %s",
1698 host ? host : "*", port, _dbus_strerror_from_errno());
1701 snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port );
1702 if (!_dbus_string_append(retport, portbuf))
1704 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1708 /* Release current address list & redo lookup */
1709 port = _dbus_string_get_const_data(retport);
1711 goto redo_lookup_with_port;
1715 if (!_dbus_string_append(retport, port))
1717 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1730 _dbus_win_set_errno (WSAEADDRINUSE);
1731 dbus_set_error (error, _dbus_error_from_errno (errno),
1732 "Failed to bind socket \"%s:%s\": %s",
1733 host ? host : "*", port, _dbus_strerror_from_errno ());
1737 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num);
1739 for (i = 0 ; i < nlisten_fd ; i++)
1741 _dbus_fd_set_close_on_exec (listen_fd[i]);
1742 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1755 for (i = 0 ; i < nlisten_fd ; i++)
1756 closesocket (listen_fd[i]);
1757 dbus_free(listen_fd);
1763 * Accepts a connection on a listening socket.
1764 * Handles EINTR for you.
1766 * @param listen_fd the listen file descriptor
1767 * @returns the connection fd of the client, or -1 on error
1770 _dbus_accept (int listen_fd)
1775 client_fd = accept (listen_fd, NULL, NULL);
1777 if (DBUS_SOCKET_IS_INVALID (client_fd))
1779 DBUS_SOCKET_SET_ERRNO ();
1784 _dbus_verbose ("client fd %d accepted\n", client_fd);
1793 _dbus_send_credentials_socket (int handle,
1796 /* FIXME: for the session bus credentials shouldn't matter (?), but
1797 * for the system bus they are presumably essential. A rough outline
1798 * of a way to implement the credential transfer would be this:
1800 * client waits to *read* a byte.
1802 * server creates a named pipe with a random name, sends a byte
1803 * contining its length, and its name.
1805 * client reads the name, connects to it (using Win32 API).
1807 * server waits for connection to the named pipe, then calls
1808 * ImpersonateNamedPipeClient(), notes its now-current credentials,
1809 * calls RevertToSelf(), closes its handles to the named pipe, and
1810 * is done. (Maybe there is some other way to get the SID of a named
1811 * pipe client without having to use impersonation?)
1813 * client closes its handles and is done.
1815 * Ralf: Why not sending credentials over the given this connection ?
1816 * Using named pipes makes it impossible to be connected from a unix client.
1822 _dbus_string_init_const_len (&buf, "\0", 1);
1824 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 );
1826 if (bytes_written < 0 && errno == EINTR)
1829 if (bytes_written < 0)
1831 dbus_set_error (error, _dbus_error_from_errno (errno),
1832 "Failed to write credentials byte: %s",
1833 _dbus_strerror_from_errno ());
1836 else if (bytes_written == 0)
1838 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
1839 "wrote zero bytes writing credentials byte");
1844 _dbus_assert (bytes_written == 1);
1845 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n");
1852 * Reads a single byte which must be nul (an error occurs otherwise),
1853 * and reads unix credentials if available. Fills in pid/uid/gid with
1854 * -1 if no credentials are available. Return value indicates whether
1855 * a byte was read, not whether we got valid credentials. On some
1856 * systems, such as Linux, reading/writing the byte isn't actually
1857 * required, but we do it anyway just to avoid multiple codepaths.
1859 * Fails if no byte is available, so you must select() first.
1861 * The point of the byte is that on some systems we have to
1862 * use sendmsg()/recvmsg() to transmit credentials.
1864 * @param client_fd the client file descriptor
1865 * @param credentials struct to fill with credentials of client
1866 * @param error location to store error code
1867 * @returns #TRUE on success
1870 _dbus_read_credentials_socket (int handle,
1871 DBusCredentials *credentials,
1881 // could fail due too OOM
1882 if (_dbus_string_init (&buf))
1884 bytes_read = _dbus_read_socket (handle, &buf, 1 );
1887 _dbus_verbose ("got one zero byte from server\n");
1889 _dbus_string_free (&buf);
1892 pid = _dbus_get_peer_pid_from_tcp_handle (handle);
1896 _dbus_credentials_add_pid (credentials, pid);
1898 if (_dbus_getsid (&sid, pid))
1900 if (!_dbus_credentials_add_windows_sid (credentials, sid))
1914 * Checks to make sure the given directory is
1915 * private to the user
1917 * @param dir the name of the directory
1918 * @param error error return
1919 * @returns #FALSE on failure
1922 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error)
1925 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1931 * Appends the given filename to the given directory.
1933 * @todo it might be cute to collapse multiple '/' such as "foo//"
1936 * @param dir the directory name
1937 * @param next_component the filename
1938 * @returns #TRUE on success
1941 _dbus_concat_dir_and_file (DBusString *dir,
1942 const DBusString *next_component)
1944 dbus_bool_t dir_ends_in_slash;
1945 dbus_bool_t file_starts_with_slash;
1947 if (_dbus_string_get_length (dir) == 0 ||
1948 _dbus_string_get_length (next_component) == 0)
1952 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) ||
1953 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1));
1955 file_starts_with_slash =
1956 ('/' == _dbus_string_get_byte (next_component, 0) ||
1957 '\\' == _dbus_string_get_byte (next_component, 0));
1959 if (dir_ends_in_slash && file_starts_with_slash)
1961 _dbus_string_shorten (dir, 1);
1963 else if (!(dir_ends_in_slash || file_starts_with_slash))
1965 if (!_dbus_string_append_byte (dir, '\\'))
1969 return _dbus_string_copy (next_component, 0, dir,
1970 _dbus_string_get_length (dir));
1973 /*---------------- DBusCredentials ----------------------------------*/
1976 * Adds the credentials corresponding to the given username.
1978 * @param credentials credentials to fill in
1979 * @param username the username
1980 * @returns #TRUE if the username existed and we got some credentials
1983 _dbus_credentials_add_from_user (DBusCredentials *credentials,
1984 const DBusString *username)
1986 return _dbus_credentials_add_windows_sid (credentials,
1987 _dbus_string_get_const_data(username));
1991 * Adds the credentials of the current process to the
1992 * passed-in credentials object.
1994 * @param credentials credentials to add to
1995 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added
1999 _dbus_credentials_add_from_current_process (DBusCredentials *credentials)
2001 dbus_bool_t retval = FALSE;
2004 if (!_dbus_getsid(&sid, _dbus_getpid()))
2007 if (!_dbus_credentials_add_pid (credentials, _dbus_getpid()))
2010 if (!_dbus_credentials_add_windows_sid (credentials,sid))
2025 * Append to the string the identity we would like to have when we
2026 * authenticate, on UNIX this is the current process UID and on
2027 * Windows something else, probably a Windows SID string. No escaping
2028 * is required, that is done in dbus-auth.c. The username here
2029 * need not be anything human-readable, it can be the machine-readable
2030 * form i.e. a user id.
2032 * @param str the string to append to
2033 * @returns #FALSE on no memory
2034 * @todo to which class belongs this
2037 _dbus_append_user_from_current_process (DBusString *str)
2039 dbus_bool_t retval = FALSE;
2042 if (!_dbus_getsid(&sid, _dbus_getpid()))
2045 retval = _dbus_string_append (str,sid);
2052 * Gets our process ID
2053 * @returns process ID
2058 return GetCurrentProcessId ();
2061 /** nanoseconds in a second */
2062 #define NANOSECONDS_PER_SECOND 1000000000
2063 /** microseconds in a second */
2064 #define MICROSECONDS_PER_SECOND 1000000
2065 /** milliseconds in a second */
2066 #define MILLISECONDS_PER_SECOND 1000
2067 /** nanoseconds in a millisecond */
2068 #define NANOSECONDS_PER_MILLISECOND 1000000
2069 /** microseconds in a millisecond */
2070 #define MICROSECONDS_PER_MILLISECOND 1000
2073 * Sleeps the given number of milliseconds.
2074 * @param milliseconds number of milliseconds
2077 _dbus_sleep_milliseconds (int milliseconds)
2079 Sleep (milliseconds);
2084 * Get current time, as in gettimeofday(). Never uses the monotonic
2087 * @param tv_sec return location for number of seconds
2088 * @param tv_usec return location for number of microseconds
2091 _dbus_get_real_time (long *tv_sec,
2095 dbus_uint64_t time64;
2097 GetSystemTimeAsFileTime (&ft);
2099 memcpy (&time64, &ft, sizeof (time64));
2101 /* Convert from 100s of nanoseconds since 1601-01-01
2102 * to Unix epoch. Yes, this is Y2038 unsafe.
2104 time64 -= DBUS_INT64_CONSTANT (116444736000000000);
2108 *tv_sec = time64 / 1000000;
2111 *tv_usec = time64 % 1000000;
2115 * Get current time, as in gettimeofday(). Use the monotonic clock if
2116 * available, to avoid problems when the system time changes.
2118 * @param tv_sec return location for number of seconds
2119 * @param tv_usec return location for number of microseconds
2122 _dbus_get_monotonic_time (long *tv_sec,
2125 /* no implementation yet, fall back to wall-clock time */
2126 _dbus_get_real_time (tv_sec, tv_usec);
2130 * signal (SIGPIPE, SIG_IGN);
2133 _dbus_disable_sigpipe (void)
2138 * Creates a directory; succeeds if the directory
2139 * is created or already existed.
2141 * @param filename directory filename
2142 * @param error initialized error object
2143 * @returns #TRUE on success
2146 _dbus_create_directory (const DBusString *filename,
2149 const char *filename_c;
2151 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2153 filename_c = _dbus_string_get_const_data (filename);
2155 if (!CreateDirectoryA (filename_c, NULL))
2157 if (GetLastError () == ERROR_ALREADY_EXISTS)
2160 dbus_set_error (error, DBUS_ERROR_FAILED,
2161 "Failed to create directory %s: %s\n",
2162 filename_c, _dbus_strerror_from_errno ());
2171 * Generates the given number of random bytes,
2172 * using the best mechanism we can come up with.
2174 * @param str the string
2175 * @param n_bytes the number of random bytes to append to string
2176 * @returns #TRUE on success, #FALSE if no memory
2179 _dbus_generate_random_bytes (DBusString *str,
2186 old_len = _dbus_string_get_length (str);
2188 if (!_dbus_string_lengthen (str, n_bytes))
2191 p = _dbus_string_get_data_len (str, old_len, n_bytes);
2193 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
2196 if (!CryptGenRandom (hprov, n_bytes, p))
2198 CryptReleaseContext (hprov, 0);
2202 CryptReleaseContext (hprov, 0);
2208 * Gets the temporary files directory by inspecting the environment variables
2209 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned
2211 * @returns location of temp directory
2214 _dbus_get_tmpdir(void)
2216 static const char* tmpdir = NULL;
2217 static char buf[1000];
2223 if (!GetTempPathA (sizeof (buf), buf))
2225 _dbus_warn ("GetTempPath failed\n");
2229 /* Drop terminating backslash or slash */
2230 last_slash = _mbsrchr (buf, '\\');
2231 if (last_slash > buf && last_slash[1] == '\0')
2232 last_slash[0] = '\0';
2233 last_slash = _mbsrchr (buf, '/');
2234 if (last_slash > buf && last_slash[1] == '\0')
2235 last_slash[0] = '\0';
2240 _dbus_assert(tmpdir != NULL);
2247 * Deletes the given file.
2249 * @param filename the filename
2250 * @param error error location
2252 * @returns #TRUE if unlink() succeeded
2255 _dbus_delete_file (const DBusString *filename,
2258 const char *filename_c;
2260 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2262 filename_c = _dbus_string_get_const_data (filename);
2264 if (DeleteFileA (filename_c) == 0)
2266 dbus_set_error (error, DBUS_ERROR_FAILED,
2267 "Failed to delete file %s: %s\n",
2268 filename_c, _dbus_strerror_from_errno ());
2276 * replaces the term DBUS_PREFIX in configure_time_path by the
2277 * current dbus installation directory. On unix this function is a noop
2279 * @param configure_time_path
2283 _dbus_replace_install_prefix (const char *configure_time_path)
2286 return configure_time_path;
2288 static char retval[1000];
2289 static char runtime_prefix[1000];
2293 if (!configure_time_path)
2296 if ((!_dbus_get_install_root(runtime_prefix, len) ||
2297 strncmp (configure_time_path, DBUS_PREFIX "/",
2298 strlen (DBUS_PREFIX) + 1))) {
2299 strcat (retval, configure_time_path);
2303 strcpy (retval, runtime_prefix);
2304 strcat (retval, configure_time_path + strlen (DBUS_PREFIX) + 1);
2306 /* Somehow, in some situations, backslashes get collapsed in the string.
2307 * Since windows C library accepts both forward and backslashes as
2308 * path separators, convert all backslashes to forward slashes.
2311 for(i = 0; retval[i] != '\0'; i++) {
2312 if(retval[i] == '\\')
2319 #if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_TESTS)
2321 #if defined(_MSC_VER) || defined(DBUS_WINCE)
2331 * Backtrace Generator
2333 * Copyright 2004 Eric Poech
2334 * Copyright 2004 Robert Shearman
2336 * This library is free software; you can redistribute it and/or
2337 * modify it under the terms of the GNU Lesser General Public
2338 * License as published by the Free Software Foundation; either
2339 * version 2.1 of the License, or (at your option) any later version.
2341 * This library is distributed in the hope that it will be useful,
2342 * but WITHOUT ANY WARRANTY; without even the implied warranty of
2343 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2344 * Lesser General Public License for more details.
2346 * You should have received a copy of the GNU Lesser General Public
2347 * License along with this library; if not, write to the Free Software
2348 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2352 #include <imagehlp.h>
2355 #define DPRINTF _dbus_warn
2363 //#define MAKE_FUNCPTR(f) static typeof(f) * p##f
2365 //MAKE_FUNCPTR(StackWalk);
2366 //MAKE_FUNCPTR(SymGetModuleBase);
2367 //MAKE_FUNCPTR(SymFunctionTableAccess);
2368 //MAKE_FUNCPTR(SymInitialize);
2369 //MAKE_FUNCPTR(SymGetSymFromAddr);
2370 //MAKE_FUNCPTR(SymGetModuleInfo);
2371 static BOOL (WINAPI *pStackWalk)(
2375 LPSTACKFRAME StackFrame,
2376 PVOID ContextRecord,
2377 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2378 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2379 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2380 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2383 static DWORD64 (WINAPI *pSymGetModuleBase)(
2387 static PVOID (WINAPI *pSymFunctionTableAccess)(
2392 static DWORD (WINAPI *pSymGetModuleBase)(
2396 static PVOID (WINAPI *pSymFunctionTableAccess)(
2401 static BOOL (WINAPI *pSymInitialize)(
2403 PSTR UserSearchPath,
2406 static BOOL (WINAPI *pSymGetSymFromAddr)(
2409 PDWORD Displacement,
2410 PIMAGEHLP_SYMBOL Symbol
2412 static BOOL (WINAPI *pSymGetModuleInfo)(
2415 PIMAGEHLP_MODULE ModuleInfo
2417 static DWORD (WINAPI *pSymSetOptions)(
2422 static BOOL init_backtrace()
2424 HMODULE hmodDbgHelp = LoadLibraryA("dbghelp");
2426 #define GETFUNC(x) \
2427 p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \
2435 // GETFUNC(StackWalk);
2436 // GETFUNC(SymGetModuleBase);
2437 // GETFUNC(SymFunctionTableAccess);
2438 // GETFUNC(SymInitialize);
2439 // GETFUNC(SymGetSymFromAddr);
2440 // GETFUNC(SymGetModuleInfo);
2444 pStackWalk = (BOOL (WINAPI *)(
2448 LPSTACKFRAME StackFrame,
2449 PVOID ContextRecord,
2450 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2451 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2452 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2453 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2454 ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk));
2456 pSymGetModuleBase=(DWORD64 (WINAPI *)(
2459 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2460 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2463 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2465 pSymGetModuleBase=(DWORD (WINAPI *)(
2468 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2469 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2472 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2474 pSymInitialize = (BOOL (WINAPI *)(
2476 PSTR UserSearchPath,
2478 ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize));
2479 pSymGetSymFromAddr = (BOOL (WINAPI *)(
2482 PDWORD Displacement,
2483 PIMAGEHLP_SYMBOL Symbol
2484 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr));
2485 pSymGetModuleInfo = (BOOL (WINAPI *)(
2488 PIMAGEHLP_MODULE ModuleInfo
2489 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo));
2490 pSymSetOptions = (DWORD (WINAPI *)(
2492 ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions));
2495 pSymSetOptions(SYMOPT_UNDNAME);
2497 pSymInitialize(GetCurrentProcess(), NULL, TRUE);
2502 static void dump_backtrace_for_thread(HANDLE hThread)
2509 if (!init_backtrace())
2512 /* can't use this function for current thread as GetThreadContext
2513 * doesn't support getting context from current thread */
2514 if (hThread == GetCurrentThread())
2517 DPRINTF("Backtrace:\n");
2519 _DBUS_ZERO(context);
2520 context.ContextFlags = CONTEXT_FULL;
2522 SuspendThread(hThread);
2524 if (!GetThreadContext(hThread, &context))
2526 DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError());
2527 ResumeThread(hThread);
2534 sf.AddrFrame.Offset = context.Ebp;
2535 sf.AddrFrame.Mode = AddrModeFlat;
2536 sf.AddrPC.Offset = context.Eip;
2537 sf.AddrPC.Mode = AddrModeFlat;
2538 dwImageType = IMAGE_FILE_MACHINE_I386;
2540 dwImageType = IMAGE_FILE_MACHINE_AMD64;
2541 sf.AddrPC.Offset = context.Rip;
2542 sf.AddrPC.Mode = AddrModeFlat;
2543 sf.AddrFrame.Offset = context.Rsp;
2544 sf.AddrFrame.Mode = AddrModeFlat;
2545 sf.AddrStack.Offset = context.Rsp;
2546 sf.AddrStack.Mode = AddrModeFlat;
2548 dwImageType = IMAGE_FILE_MACHINE_IA64;
2549 sf.AddrPC.Offset = context.StIIP;
2550 sf.AddrPC.Mode = AddrModeFlat;
2551 sf.AddrFrame.Offset = context.IntSp;
2552 sf.AddrFrame.Mode = AddrModeFlat;
2553 sf.AddrBStore.Offset= context.RsBSP;
2554 sf.AddrBStore.Mode = AddrModeFlat;
2555 sf.AddrStack.Offset = context.IntSp;
2556 sf.AddrStack.Mode = AddrModeFlat;
2558 # error You need to fill in the STACKFRAME structure for your architecture
2561 while (pStackWalk(dwImageType, GetCurrentProcess(),
2562 hThread, &sf, &context, NULL, pSymFunctionTableAccess,
2563 pSymGetModuleBase, NULL))
2566 IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer;
2567 DWORD dwDisplacement;
2569 pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
2570 pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1;
2572 if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset,
2573 &dwDisplacement, pSymbol))
2575 IMAGEHLP_MODULE ModuleInfo;
2576 ModuleInfo.SizeOfStruct = sizeof(ModuleInfo);
2578 if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset,
2580 DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset);
2582 DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName,
2583 sf.AddrPC.Offset - ModuleInfo.BaseOfImage);
2585 else if (dwDisplacement)
2586 DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement);
2588 DPRINTF("4\t%s\n", pSymbol->Name);
2591 ResumeThread(hThread);
2594 static DWORD WINAPI dump_thread_proc(LPVOID lpParameter)
2596 dump_backtrace_for_thread((HANDLE)lpParameter);
2600 /* cannot get valid context from current thread, so we have to execute
2601 * backtrace from another thread */
2602 static void dump_backtrace()
2604 HANDLE hCurrentThread;
2607 DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
2608 GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS);
2609 hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
2611 WaitForSingleObject(hThread, INFINITE);
2612 CloseHandle(hThread);
2613 CloseHandle(hCurrentThread);
2616 #endif /* asserts or tests enabled */
2619 void _dbus_print_backtrace(void)
2625 void _dbus_print_backtrace(void)
2627 _dbus_verbose (" D-Bus not compiled with backtrace support\n");
2631 static dbus_uint32_t fromAscii(char ascii)
2633 if(ascii >= '0' && ascii <= '9')
2635 if(ascii >= 'A' && ascii <= 'F')
2636 return ascii - 'A' + 10;
2637 if(ascii >= 'a' && ascii <= 'f')
2638 return ascii - 'a' + 10;
2642 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
2643 dbus_bool_t create_if_not_found,
2650 HW_PROFILE_INFOA info;
2651 char *lpc = &info.szHwProfileGuid[0];
2654 // the hw-profile guid lives long enough
2655 if(!GetCurrentHwProfileA(&info))
2657 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME
2661 // Form: {12340001-4980-1920-6788-123456789012}
2664 u = ((fromAscii(lpc[0]) << 0) |
2665 (fromAscii(lpc[1]) << 4) |
2666 (fromAscii(lpc[2]) << 8) |
2667 (fromAscii(lpc[3]) << 12) |
2668 (fromAscii(lpc[4]) << 16) |
2669 (fromAscii(lpc[5]) << 20) |
2670 (fromAscii(lpc[6]) << 24) |
2671 (fromAscii(lpc[7]) << 28));
2672 machine_id->as_uint32s[0] = u;
2676 u = ((fromAscii(lpc[0]) << 0) |
2677 (fromAscii(lpc[1]) << 4) |
2678 (fromAscii(lpc[2]) << 8) |
2679 (fromAscii(lpc[3]) << 12) |
2680 (fromAscii(lpc[5]) << 16) |
2681 (fromAscii(lpc[6]) << 20) |
2682 (fromAscii(lpc[7]) << 24) |
2683 (fromAscii(lpc[8]) << 28));
2684 machine_id->as_uint32s[1] = u;
2688 u = ((fromAscii(lpc[0]) << 0) |
2689 (fromAscii(lpc[1]) << 4) |
2690 (fromAscii(lpc[2]) << 8) |
2691 (fromAscii(lpc[3]) << 12) |
2692 (fromAscii(lpc[5]) << 16) |
2693 (fromAscii(lpc[6]) << 20) |
2694 (fromAscii(lpc[7]) << 24) |
2695 (fromAscii(lpc[8]) << 28));
2696 machine_id->as_uint32s[2] = u;
2700 u = ((fromAscii(lpc[0]) << 0) |
2701 (fromAscii(lpc[1]) << 4) |
2702 (fromAscii(lpc[2]) << 8) |
2703 (fromAscii(lpc[3]) << 12) |
2704 (fromAscii(lpc[4]) << 16) |
2705 (fromAscii(lpc[5]) << 20) |
2706 (fromAscii(lpc[6]) << 24) |
2707 (fromAscii(lpc[7]) << 28));
2708 machine_id->as_uint32s[3] = u;
2714 HANDLE _dbus_global_lock (const char *mutexname)
2719 mutex = CreateMutexA( NULL, FALSE, mutexname );
2725 gotMutex = WaitForSingleObject( mutex, INFINITE );
2728 case WAIT_ABANDONED:
2729 ReleaseMutex (mutex);
2730 CloseHandle (mutex);
2741 void _dbus_global_unlock (HANDLE mutex)
2743 ReleaseMutex (mutex);
2744 CloseHandle (mutex);
2747 // for proper cleanup in dbus-daemon
2748 static HANDLE hDBusDaemonMutex = NULL;
2749 static HANDLE hDBusSharedMem = NULL;
2750 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2751 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex";
2752 // sync _dbus_get_autolaunch_address
2753 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex";
2754 // mutex to determine if dbus-daemon is already started (per user)
2755 static const char *cDBusDaemonMutex = "DBusDaemonMutex";
2756 // named shm for dbus adress info (per user)
2757 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo";
2760 _dbus_get_install_root_as_hash(DBusString *out)
2762 DBusString install_path;
2764 char path[MAX_PATH*2];
2765 int path_size = sizeof(path);
2767 if (!_dbus_get_install_root(path,path_size))
2770 _dbus_string_init(&install_path);
2771 _dbus_string_append(&install_path,path);
2773 _dbus_string_init(out);
2774 _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path));
2776 if (!_dbus_sha_compute (&install_path, out))
2783 _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope)
2785 _dbus_string_init(out);
2786 _dbus_string_append(out,basestring);
2792 else if (strcmp(scope,"*install-path") == 0
2793 // for 1.3 compatibility
2794 || strcmp(scope,"install-path") == 0)
2797 if (!_dbus_get_install_root_as_hash(&temp))
2799 _dbus_string_free(out);
2802 _dbus_string_append(out,"-");
2803 _dbus_string_append(out,_dbus_string_get_const_data(&temp));
2804 _dbus_string_free(&temp);
2806 else if (strcmp(scope,"*user") == 0)
2808 _dbus_string_append(out,"-");
2809 if (!_dbus_append_user_from_current_process(out))
2811 _dbus_string_free(out);
2815 else if (strlen(scope) > 0)
2817 _dbus_string_append(out,"-");
2818 _dbus_string_append(out,scope);
2825 _dbus_get_shm_name (DBusString *out,const char *scope)
2827 return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope);
2831 _dbus_get_mutex_name (DBusString *out,const char *scope)
2833 return _dbus_get_address_string (out,cDBusDaemonMutex,scope);
2837 _dbus_daemon_is_session_bus_address_published (const char *scope)
2840 DBusString mutex_name;
2842 if (!_dbus_get_mutex_name(&mutex_name,scope))
2844 _dbus_string_free( &mutex_name );
2848 if (hDBusDaemonMutex)
2851 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2852 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2854 // we use CreateMutex instead of OpenMutex because of possible race conditions,
2855 // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx
2856 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2858 /* The client uses mutex ownership to detect a running server, so the server should do so too.
2859 Fortunally the client deletes the mutex in the lock protected area, so checking presence
2862 _dbus_global_unlock( lock );
2864 _dbus_string_free( &mutex_name );
2866 if (hDBusDaemonMutex == NULL)
2868 if (GetLastError() == ERROR_ALREADY_EXISTS)
2870 CloseHandle(hDBusDaemonMutex);
2871 hDBusDaemonMutex = NULL;
2874 // mutex wasn't created before, so return false.
2875 // We leave the mutex name allocated for later reusage
2876 // in _dbus_daemon_publish_session_bus_address.
2881 _dbus_daemon_publish_session_bus_address (const char* address, const char *scope)
2884 char *shared_addr = NULL;
2885 DBusString shm_name;
2886 DBusString mutex_name;
2888 _dbus_assert (address);
2890 if (!_dbus_get_mutex_name(&mutex_name,scope))
2892 _dbus_string_free( &mutex_name );
2896 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2897 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2899 if (!hDBusDaemonMutex)
2901 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2903 _dbus_string_free( &mutex_name );
2905 // acquire the mutex
2906 if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0)
2908 _dbus_global_unlock( lock );
2909 CloseHandle( hDBusDaemonMutex );
2913 if (!_dbus_get_shm_name(&shm_name,scope))
2915 _dbus_string_free( &shm_name );
2916 _dbus_global_unlock( lock );
2921 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2922 0, strlen( address ) + 1, _dbus_string_get_const_data(&shm_name) );
2923 _dbus_assert( hDBusSharedMem );
2925 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 );
2927 _dbus_assert (shared_addr);
2929 strcpy( shared_addr, address);
2932 UnmapViewOfFile( shared_addr );
2934 _dbus_global_unlock( lock );
2935 _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) );
2937 _dbus_string_free( &shm_name );
2942 _dbus_daemon_unpublish_session_bus_address (void)
2946 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2947 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2949 CloseHandle( hDBusSharedMem );
2951 hDBusSharedMem = NULL;
2953 ReleaseMutex( hDBusDaemonMutex );
2955 CloseHandle( hDBusDaemonMutex );
2957 hDBusDaemonMutex = NULL;
2959 _dbus_global_unlock( lock );
2963 _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name)
2971 // we know that dbus-daemon is available, so we wait until shm is available
2972 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name));
2973 if( sharedMem == 0 )
2975 if ( sharedMem != 0)
2979 if( sharedMem == 0 )
2982 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 );
2987 _dbus_string_init( address );
2989 _dbus_string_append( address, shared_addr );
2992 UnmapViewOfFile( shared_addr );
2994 CloseHandle( sharedMem );
3000 _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope)
3004 DBusString mutex_name;
3005 dbus_bool_t bRet = TRUE;
3007 if (!_dbus_get_mutex_name(&mutex_name,scope))
3009 _dbus_string_free( &mutex_name );
3013 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
3014 lock = _dbus_global_lock( cUniqueDBusInitMutex );
3017 daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
3018 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT)
3020 ReleaseMutex (daemon);
3021 CloseHandle (daemon);
3023 _dbus_global_unlock( lock );
3024 _dbus_string_free( &mutex_name );
3029 bRet = _dbus_get_autolaunch_shm( address, shm_name );
3032 CloseHandle ( daemon );
3034 _dbus_global_unlock( lock );
3035 _dbus_string_free( &mutex_name );
3041 _dbus_get_autolaunch_address (const char *scope, DBusString *address,
3046 PROCESS_INFORMATION pi;
3047 dbus_bool_t retval = FALSE;
3049 char dbus_exe_path[MAX_PATH];
3050 char dbus_args[MAX_PATH * 2];
3051 const char * daemon_name = DBUS_DAEMON_NAME ".exe";
3052 DBusString shm_name;
3054 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3056 if (!_dbus_get_shm_name(&shm_name,scope))
3058 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name");
3062 mutex = _dbus_global_lock ( cDBusAutolaunchMutex );
3064 if (_dbus_daemon_already_runs(address,&shm_name,scope))
3066 _dbus_verbose( "found running dbus daemon at %s\n",
3067 _dbus_string_get_const_data (&shm_name) );
3072 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3074 // Look in directory containing dbus shared library
3076 char dbus_module_path[MAX_PATH];
3079 _dbus_verbose( "did not found dbus daemon executable on default search path, "
3080 "trying path where dbus shared library is located");
3082 hmod = _dbus_win_get_dll_hmodule();
3083 rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path));
3086 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name");
3092 char *ext_idx = strrchr(dbus_module_path, '\\');
3095 if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3097 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable");
3099 printf ("please add the path to %s to your PATH environment variable\n", daemon_name);
3100 printf ("or start the daemon manually\n\n");
3103 _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path);
3109 ZeroMemory( &si, sizeof(si) );
3111 ZeroMemory( &pi, sizeof(pi) );
3113 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session");
3115 // argv[i] = "--config-file=bus\\session.conf";
3116 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args);
3117 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
3119 CloseHandle (pi.hThread);
3120 CloseHandle (pi.hProcess);
3121 retval = _dbus_get_autolaunch_shm( address, &shm_name );
3122 if (retval == FALSE)
3123 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon");
3127 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon");
3133 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3135 _DBUS_ASSERT_ERROR_IS_SET (error);
3137 _dbus_global_unlock (mutex);
3143 /** Makes the file readable by every user in the system.
3145 * @param filename the filename
3146 * @param error error location
3147 * @returns #TRUE if the file's permissions could be changed.
3150 _dbus_make_file_world_readable(const DBusString *filename,
3158 * return the relocated DATADIR
3160 * @returns relocated DATADIR static string
3164 _dbus_windows_get_datadir (void)
3166 return _dbus_replace_install_prefix(DBUS_DATADIR);
3170 #define DBUS_DATADIR _dbus_windows_get_datadir ()
3173 #define DBUS_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
3174 #define DBUS_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services"
3177 * Returns the standard directories for a session bus to look for service
3180 * On Windows this should be data directories:
3182 * %CommonProgramFiles%/dbus
3186 * relocated DBUS_DATADIR
3188 * @param dirs the directory list we are returning
3189 * @returns #FALSE on OOM
3193 _dbus_get_standard_session_servicedirs (DBusList **dirs)
3195 const char *common_progs;
3196 DBusString servicedir_path;
3198 if (!_dbus_string_init (&servicedir_path))
3203 /* On Windows CE, we adjust datadir dynamically to installation location. */
3204 const char *data_dir = _dbus_getenv ("DBUS_DATADIR");
3206 if (data_dir != NULL)
3208 if (!_dbus_string_append (&servicedir_path, data_dir))
3211 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3217 the code for accessing services requires absolute base pathes
3218 in case DBUS_DATADIR is relative make it absolute
3224 _dbus_string_init_const (&p, DBUS_DATADIR);
3226 if (!_dbus_path_is_absolute (&p))
3228 char install_root[1000];
3229 if (_dbus_get_install_root (install_root, sizeof(install_root)))
3230 if (!_dbus_string_append (&servicedir_path, install_root))
3235 if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR))
3238 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3242 common_progs = _dbus_getenv ("CommonProgramFiles");
3244 if (common_progs != NULL)
3246 if (!_dbus_string_append (&servicedir_path, common_progs))
3249 if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR))
3253 if (!_dbus_split_paths_and_append (&servicedir_path,
3254 DBUS_STANDARD_SESSION_SERVICEDIR,
3258 _dbus_string_free (&servicedir_path);
3262 _dbus_string_free (&servicedir_path);
3267 * Returns the standard directories for a system bus to look for service
3270 * On UNIX this should be the standard xdg freedesktop.org data directories:
3272 * XDG_DATA_DIRS=${XDG_DATA_DIRS-/usr/local/share:/usr/share}
3278 * On Windows there is no system bus and this function can return nothing.
3280 * @param dirs the directory list we are returning
3281 * @returns #FALSE on OOM
3285 _dbus_get_standard_system_servicedirs (DBusList **dirs)
3292 * Atomically increments an integer
3294 * @param atomic pointer to the integer to increment
3295 * @returns the value before incrementing
3299 _dbus_atomic_inc (DBusAtomic *atomic)
3301 // +/- 1 is needed here!
3302 // no volatile argument with mingw
3303 return InterlockedIncrement (&atomic->value) - 1;
3307 * Atomically decrement an integer
3309 * @param atomic pointer to the integer to decrement
3310 * @returns the value before decrementing
3314 _dbus_atomic_dec (DBusAtomic *atomic)
3316 // +/- 1 is needed here!
3317 // no volatile argument with mingw
3318 return InterlockedDecrement (&atomic->value) + 1;
3322 * Atomically get the value of an integer. It may change at any time
3323 * thereafter, so this is mostly only useful for assertions.
3325 * @param atomic pointer to the integer to get
3326 * @returns the value at this moment
3329 _dbus_atomic_get (DBusAtomic *atomic)
3331 /* In this situation, GLib issues a MemoryBarrier() and then returns
3332 * atomic->value. However, mingw from mingw.org (not to be confused with
3333 * mingw-w64 from mingw-w64.sf.net) does not have MemoryBarrier in its
3334 * headers, so we have to get a memory barrier some other way.
3336 * InterlockedIncrement is older, and is documented on MSDN to be a full
3337 * memory barrier, so let's use that.
3341 InterlockedExchange (&dummy, 1);
3343 return atomic->value;
3347 * Called when the bus daemon is signaled to reload its configuration; any
3348 * caches should be nuked. Of course any caches that need explicit reload
3349 * are probably broken, but c'est la vie.
3354 _dbus_flush_caches (void)
3359 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently
3360 * for Winsock so is abstracted)
3362 * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK
3365 _dbus_get_is_errno_eagain_or_ewouldblock (void)
3367 return errno == WSAEWOULDBLOCK;
3371 * return the absolute path of the dbus installation
3373 * @param s buffer for installation path
3374 * @param len length of buffer
3375 * @returns #FALSE on failure
3378 _dbus_get_install_root(char *prefix, int len)
3380 //To find the prefix, we cut the filename and also \bin\ if present
3384 pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len);
3385 if ( pathLength == 0 || GetLastError() != 0 ) {
3389 lastSlash = _mbsrchr(prefix, '\\');
3390 if (lastSlash == NULL) {
3394 //cut off binary name
3397 //cut possible "\\bin"
3399 //this fails if we are in a double-byte system codepage and the
3400 //folder's name happens to end with the *bytes*
3401 //"\\bin"... (I.e. the second byte of some Han character and then
3402 //the Latin "bin", but that is not likely I think...
3403 if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0)
3405 else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0)
3407 else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0)
3414 find config file either from installation or build root according to
3415 the following path layout
3417 bin/dbus-daemon[d].exe
3418 etc/<config-file>.conf *or* etc/dbus-1/<config-file>.conf
3419 (the former above is what dbus4win uses, the latter above is
3420 what a "normal" Unix-style "make install" uses)
3423 bin/dbus-daemon[d].exe
3424 bus/<config-file>.conf
3427 _dbus_get_config_file_name(DBusString *config_file, char *s)
3429 char path[MAX_PATH*2];
3430 int path_size = sizeof(path);
3432 if (!_dbus_get_install_root(path,path_size))
3435 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3437 strcat(path,"etc\\");
3439 if (_dbus_file_exists(path))
3441 // find path from executable
3442 if (!_dbus_string_append (config_file, path))
3447 if (!_dbus_get_install_root(path,path_size))
3449 if(strlen(s) + 11 + strlen(path) > sizeof(path)-2)
3451 strcat(path,"etc\\dbus-1\\");
3454 if (_dbus_file_exists(path))
3456 if (!_dbus_string_append (config_file, path))
3461 if (!_dbus_get_install_root(path,path_size))
3463 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3465 strcat(path,"bus\\");
3468 if (_dbus_file_exists(path))
3470 if (!_dbus_string_append (config_file, path))
3479 * Append the absolute path of the system.conf file
3480 * (there is no system bus on Windows so this can just
3481 * return FALSE and print a warning or something)
3483 * @param str the string to append to
3484 * @returns #FALSE if no memory
3487 _dbus_append_system_config_file (DBusString *str)
3489 return _dbus_get_config_file_name(str, "system.conf");
3493 * Append the absolute path of the session.conf file.
3495 * @param str the string to append to
3496 * @returns #FALSE if no memory
3499 _dbus_append_session_config_file (DBusString *str)
3501 return _dbus_get_config_file_name(str, "session.conf");
3504 /* See comment in dbus-sysdeps-unix.c */
3506 _dbus_lookup_session_address (dbus_bool_t *supported,
3507 DBusString *address,
3510 /* Probably fill this in with something based on COM? */
3516 * Appends the directory in which a keyring for the given credentials
3517 * should be stored. The credentials should have either a Windows or
3518 * UNIX user in them. The directory should be an absolute path.
3520 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably
3521 * be something else, since the dotfile convention is not normal on Windows.
3523 * @param directory string to append directory to
3524 * @param credentials credentials the directory should be for
3526 * @returns #FALSE on no memory
3529 _dbus_append_keyring_directory_for_credentials (DBusString *directory,
3530 DBusCredentials *credentials)
3534 const char *homepath;
3535 const char *homedrive;
3537 _dbus_assert (credentials != NULL);
3538 _dbus_assert (!_dbus_credentials_are_anonymous (credentials));
3540 if (!_dbus_string_init (&homedir))
3543 homedrive = _dbus_getenv("HOMEDRIVE");
3544 if (homedrive != NULL && *homedrive != '\0')
3546 _dbus_string_append(&homedir,homedrive);
3549 homepath = _dbus_getenv("HOMEPATH");
3550 if (homepath != NULL && *homepath != '\0')
3552 _dbus_string_append(&homedir,homepath);
3555 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3557 const char *override;
3559 override = _dbus_getenv ("DBUS_TEST_HOMEDIR");
3560 if (override != NULL && *override != '\0')
3562 _dbus_string_set_length (&homedir, 0);
3563 if (!_dbus_string_append (&homedir, override))
3566 _dbus_verbose ("Using fake homedir for testing: %s\n",
3567 _dbus_string_get_const_data (&homedir));
3571 static dbus_bool_t already_warned = FALSE;
3572 if (!already_warned)
3574 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3575 already_warned = TRUE;
3582 /* It's not possible to create a .something directory in Windows CE
3583 using the file explorer. */
3584 #define KEYRING_DIR "dbus-keyrings"
3586 #define KEYRING_DIR ".dbus-keyrings"
3589 _dbus_string_init_const (&dotdir, KEYRING_DIR);
3590 if (!_dbus_concat_dir_and_file (&homedir,
3594 if (!_dbus_string_copy (&homedir, 0,
3595 directory, _dbus_string_get_length (directory))) {
3599 _dbus_string_free (&homedir);
3603 _dbus_string_free (&homedir);
3607 /** Checks if a file exists
3609 * @param file full path to the file
3610 * @returns #TRUE if file exists
3613 _dbus_file_exists (const char *file)
3615 DWORD attributes = GetFileAttributesA (file);
3617 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND)
3624 * A wrapper around strerror() because some platforms
3625 * may be lame and not have strerror().
3627 * @param error_number errno.
3628 * @returns error description.
3631 _dbus_strerror (int error_number)
3639 switch (error_number)
3642 return "Interrupted function call";
3644 return "Permission denied";
3646 return "Bad address";
3648 return "Invalid argument";
3650 return "Too many open files";
3651 case WSAEWOULDBLOCK:
3652 return "Resource temporarily unavailable";
3653 case WSAEINPROGRESS:
3654 return "Operation now in progress";
3656 return "Operation already in progress";
3658 return "Socket operation on nonsocket";
3659 case WSAEDESTADDRREQ:
3660 return "Destination address required";
3662 return "Message too long";
3664 return "Protocol wrong type for socket";
3665 case WSAENOPROTOOPT:
3666 return "Bad protocol option";
3667 case WSAEPROTONOSUPPORT:
3668 return "Protocol not supported";
3669 case WSAESOCKTNOSUPPORT:
3670 return "Socket type not supported";
3672 return "Operation not supported";
3673 case WSAEPFNOSUPPORT:
3674 return "Protocol family not supported";
3675 case WSAEAFNOSUPPORT:
3676 return "Address family not supported by protocol family";
3678 return "Address already in use";
3679 case WSAEADDRNOTAVAIL:
3680 return "Cannot assign requested address";
3682 return "Network is down";
3683 case WSAENETUNREACH:
3684 return "Network is unreachable";
3686 return "Network dropped connection on reset";
3687 case WSAECONNABORTED:
3688 return "Software caused connection abort";
3690 return "Connection reset by peer";
3692 return "No buffer space available";
3694 return "Socket is already connected";
3696 return "Socket is not connected";
3698 return "Cannot send after socket shutdown";
3700 return "Connection timed out";
3701 case WSAECONNREFUSED:
3702 return "Connection refused";
3704 return "Host is down";
3705 case WSAEHOSTUNREACH:
3706 return "No route to host";
3708 return "Too many processes";
3710 return "Graceful shutdown in progress";
3711 case WSATYPE_NOT_FOUND:
3712 return "Class type not found";
3713 case WSAHOST_NOT_FOUND:
3714 return "Host not found";
3716 return "Nonauthoritative host not found";
3717 case WSANO_RECOVERY:
3718 return "This is a nonrecoverable error";
3720 return "Valid name, no data record of requested type";
3721 case WSA_INVALID_HANDLE:
3722 return "Specified event object handle is invalid";
3723 case WSA_INVALID_PARAMETER:
3724 return "One or more parameters are invalid";
3725 case WSA_IO_INCOMPLETE:
3726 return "Overlapped I/O event object not in signaled state";
3727 case WSA_IO_PENDING:
3728 return "Overlapped operations will complete later";
3729 case WSA_NOT_ENOUGH_MEMORY:
3730 return "Insufficient memory available";
3731 case WSA_OPERATION_ABORTED:
3732 return "Overlapped operation aborted";
3733 #ifdef WSAINVALIDPROCTABLE
3735 case WSAINVALIDPROCTABLE:
3736 return "Invalid procedure table from service provider";
3738 #ifdef WSAINVALIDPROVIDER
3740 case WSAINVALIDPROVIDER:
3741 return "Invalid service provider version number";
3743 #ifdef WSAPROVIDERFAILEDINIT
3745 case WSAPROVIDERFAILEDINIT:
3746 return "Unable to initialize a service provider";
3749 case WSASYSCALLFAILURE:
3750 return "System call failure";
3752 msg = strerror (error_number);
3761 * Assigns an error name and message corresponding to a Win32 error
3762 * code to a DBusError. Does nothing if error is #NULL.
3764 * @param error the error.
3765 * @param code the Win32 error code
3768 _dbus_win_set_error_from_win_error (DBusError *error,
3773 /* As we want the English message, use the A API */
3774 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
3775 FORMAT_MESSAGE_IGNORE_INSERTS |
3776 FORMAT_MESSAGE_FROM_SYSTEM,
3777 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US),
3778 (LPSTR) &msg, 0, NULL);
3783 msg_copy = dbus_malloc (strlen (msg));
3784 strcpy (msg_copy, msg);
3787 dbus_set_error (error, "win32.error", "%s", msg_copy);
3790 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
3794 _dbus_win_warn_win_error (const char *message,
3799 dbus_error_init (&error);
3800 _dbus_win_set_error_from_win_error (&error, code);
3801 _dbus_warn ("%s: %s\n", message, error.message);
3802 dbus_error_free (&error);
3806 * Removes a directory; Directory must be empty
3808 * @param filename directory filename
3809 * @param error initialized error object
3810 * @returns #TRUE on success
3813 _dbus_delete_directory (const DBusString *filename,
3816 const char *filename_c;
3818 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3820 filename_c = _dbus_string_get_const_data (filename);
3822 if (RemoveDirectoryA (filename_c) == 0)
3824 char *emsg = _dbus_win_error_string (GetLastError ());
3825 dbus_set_error (error, _dbus_win_error_from_last_error (),
3826 "Failed to remove directory %s: %s",
3828 _dbus_win_free_error_string (emsg);
3836 * Checks whether the filename is an absolute path
3838 * @param filename the filename
3839 * @returns #TRUE if an absolute path
3842 _dbus_path_is_absolute (const DBusString *filename)
3844 if (_dbus_string_get_length (filename) > 0)
3845 return _dbus_string_get_byte (filename, 1) == ':'
3846 || _dbus_string_get_byte (filename, 0) == '\\'
3847 || _dbus_string_get_byte (filename, 0) == '/';
3853 _dbus_check_setuid (void)
3858 /** @} end of sysdeps-win */
3859 /* tests in dbus-sysdeps-util.c */