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;
120 * AllocateAndGetTcpExTableFromStack() is undocumented and not exported,
121 * but is the only way to do this in older XP versions.
122 * @return true if the procedures could be loaded
125 load_ex_ip_helper_procedures(void)
127 HMODULE hModule = LoadLibrary ("iphlpapi.dll");
130 _dbus_verbose ("could not load iphlpapi.dll\n");
134 lpfnAllocateAndGetTcpExTableFromStack = (ProcAllocateAndGetTcpExtTableFromStack)GetProcAddress (hModule, "AllocateAndGetTcpExTableFromStack");
135 if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
137 _dbus_verbose ("could not find function AllocateAndGetTcpExTableFromStack in iphlpapi.dll\n");
144 * get pid from localhost tcp connection using peer_port
145 * This function is available on WinXP >= SP3
146 * @param peer_port peers tcp port
147 * @return process id or 0 if connection has not been found
150 get_pid_from_extended_tcp_table(int peer_port)
153 DWORD errorCode, size, i;
154 MIB_TCPTABLE_OWNER_PID *tcp_table;
157 GetExtendedTcpTable (NULL, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) == ERROR_INSUFFICIENT_BUFFER)
159 tcp_table = (MIB_TCPTABLE_OWNER_PID *) dbus_malloc (size);
160 if (tcp_table == NULL)
162 _dbus_verbose ("Error allocating memory\n");
168 _dbus_win_warn_win_error ("unexpected error returned from GetExtendedTcpTable", errorCode);
172 if ((errorCode = GetExtendedTcpTable (tcp_table, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) != NO_ERROR)
174 _dbus_verbose ("Error fetching tcp table %d\n", (int)errorCode);
175 dbus_free (tcp_table);
180 for (i = 0; i < tcp_table->dwNumEntries; i++)
182 MIB_TCPROW_OWNER_PID *p = &tcp_table->table[i];
183 int local_address = ntohl (p->dwLocalAddr);
184 int local_port = ntohs (p->dwLocalPort);
185 if (p->dwState == MIB_TCP_STATE_ESTAB
186 && local_address == INADDR_LOOPBACK && local_port == peer_port)
187 result = p->dwOwningPid;
190 dbus_free (tcp_table);
191 _dbus_verbose ("got pid %lu\n", result);
196 * get pid from localhost tcp connection using peer_port
197 * This function is available on all WinXP versions, but
198 * not in wine (at least version <= 1.6.0)
199 * @param peer_port peers tcp port
200 * @return process id or 0 if connection has not been found
203 get_pid_from_tcp_ex_table(int peer_port)
207 PMIB_TCPTABLE_EX tcp_table = NULL;
209 if (!load_ex_ip_helper_procedures ())
212 ("Error not been able to load iphelper procedures\n");
216 errorCode = lpfnAllocateAndGetTcpExTableFromStack (&tcp_table, TRUE, GetProcessHeap(), 0, 2);
218 if (errorCode != NO_ERROR)
221 ("Error not been able to call AllocateAndGetTcpExTableFromStack()\n");
226 for (i = 0; i < tcp_table->dwNumEntries; i++)
228 _MIB_TCPROW_EX *p = &tcp_table->table[i];
229 int local_port = ntohs (p->dwLocalPort);
230 int local_address = ntohl (p->dwLocalAddr);
231 if (local_address == INADDR_LOOPBACK && local_port == peer_port)
233 result = p->dwOwningPid;
238 HeapFree (GetProcessHeap(), 0, tcp_table);
239 _dbus_verbose ("got pid %lu\n", result);
244 * @brief return peer process id from tcp handle for localhost connections
245 * @param handle tcp socket descriptor
246 * @return process id or 0 in case the process id could not be fetched
249 _dbus_get_peer_pid_from_tcp_handle (int handle)
251 struct sockaddr_storage addr;
252 socklen_t len = sizeof (addr);
256 dbus_bool_t is_localhost = FALSE;
258 getpeername (handle, (struct sockaddr *) &addr, &len);
260 if (addr.ss_family == AF_INET)
262 struct sockaddr_in *s = (struct sockaddr_in *) &addr;
263 peer_port = ntohs (s->sin_port);
264 is_localhost = (ntohl (s->sin_addr.s_addr) == INADDR_LOOPBACK);
266 else if (addr.ss_family == AF_INET6)
268 _dbus_verbose ("FIXME [61922]: IPV6 support not working on windows\n");
271 struct sockaddr_in6 *s = (struct sockaddr_in6 * )&addr;
272 peer_port = ntohs (s->sin6_port);
273 is_localhost = (memcmp(s->sin6_addr.s6_addr, in6addr_loopback.s6_addr, 16) == 0);
274 _dbus_verbose ("IPV6 %08x %08x\n", s->sin6_addr.s6_addr, in6addr_loopback.s6_addr);
279 _dbus_verbose ("no idea what address family %d is\n", addr.ss_family);
285 _dbus_verbose ("could not fetch process id from remote process\n");
292 ("Error not been able to fetch tcp peer port from connection\n");
296 _dbus_verbose ("trying to get peers pid");
298 result = get_pid_from_extended_tcp_table (peer_port);
301 result = get_pid_from_tcp_ex_table (peer_port);
305 /* Convert GetLastError() to a dbus error. */
307 _dbus_win_error_from_last_error (void)
309 switch (GetLastError())
312 return DBUS_ERROR_FAILED;
314 case ERROR_NO_MORE_FILES:
315 case ERROR_TOO_MANY_OPEN_FILES:
316 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
318 case ERROR_ACCESS_DENIED:
319 case ERROR_CANNOT_MAKE:
320 return DBUS_ERROR_ACCESS_DENIED;
322 case ERROR_NOT_ENOUGH_MEMORY:
323 return DBUS_ERROR_NO_MEMORY;
325 case ERROR_FILE_EXISTS:
326 return DBUS_ERROR_FILE_EXISTS;
328 case ERROR_FILE_NOT_FOUND:
329 case ERROR_PATH_NOT_FOUND:
330 return DBUS_ERROR_FILE_NOT_FOUND;
333 return DBUS_ERROR_FAILED;
338 _dbus_win_error_string (int error_number)
342 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
343 FORMAT_MESSAGE_IGNORE_INSERTS |
344 FORMAT_MESSAGE_FROM_SYSTEM,
345 NULL, error_number, 0,
346 (LPSTR) &msg, 0, NULL);
348 if (msg[strlen (msg) - 1] == '\n')
349 msg[strlen (msg) - 1] = '\0';
350 if (msg[strlen (msg) - 1] == '\r')
351 msg[strlen (msg) - 1] = '\0';
357 _dbus_win_free_error_string (char *string)
368 * Thin wrapper around the read() system call that appends
369 * the data it reads to the DBusString buffer. It appends
370 * up to the given count, and returns the same value
371 * and same errno as read(). The only exception is that
372 * _dbus_read_socket() handles EINTR for you.
373 * _dbus_read_socket() can return ENOMEM, even though
374 * regular UNIX read doesn't.
376 * @param fd the file descriptor to read from
377 * @param buffer the buffer to append data to
378 * @param count the amount of data to read
379 * @returns the number of bytes read or -1
383 _dbus_read_socket (int fd,
391 _dbus_assert (count >= 0);
393 start = _dbus_string_get_length (buffer);
395 if (!_dbus_string_lengthen (buffer, count))
397 _dbus_win_set_errno (ENOMEM);
401 data = _dbus_string_get_data_len (buffer, start, count);
405 _dbus_verbose ("recv: count=%d fd=%d\n", count, fd);
406 bytes_read = recv (fd, data, count, 0);
408 if (bytes_read == SOCKET_ERROR)
410 DBUS_SOCKET_SET_ERRNO();
411 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno);
415 _dbus_verbose ("recv: = %d\n", bytes_read);
423 /* put length back (note that this doesn't actually realloc anything) */
424 _dbus_string_set_length (buffer, start);
430 /* put length back (doesn't actually realloc) */
431 _dbus_string_set_length (buffer, start + bytes_read);
435 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
443 * Thin wrapper around the write() system call that writes a part of a
444 * DBusString and handles EINTR for you.
446 * @param fd the file descriptor to write
447 * @param buffer the buffer to write data from
448 * @param start the first byte in the buffer to write
449 * @param len the number of bytes to try to write
450 * @returns the number of bytes written or -1 on error
453 _dbus_write_socket (int fd,
454 const DBusString *buffer,
461 data = _dbus_string_get_const_data_len (buffer, start, len);
465 _dbus_verbose ("send: len=%d fd=%d\n", len, fd);
466 bytes_written = send (fd, data, len, 0);
468 if (bytes_written == SOCKET_ERROR)
470 DBUS_SOCKET_SET_ERRNO();
471 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ());
475 _dbus_verbose ("send: = %d\n", bytes_written);
477 if (bytes_written < 0 && errno == EINTR)
481 if (bytes_written > 0)
482 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
485 return bytes_written;
490 * Closes a file descriptor.
492 * @param fd the file descriptor
493 * @param error error object
494 * @returns #FALSE if error set
497 _dbus_close_socket (int fd,
500 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
503 if (closesocket (fd) == SOCKET_ERROR)
505 DBUS_SOCKET_SET_ERRNO ();
510 dbus_set_error (error, _dbus_error_from_errno (errno),
511 "Could not close socket: socket=%d, , %s",
512 fd, _dbus_strerror_from_errno ());
515 _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd);
521 * Sets the file descriptor to be close
522 * on exec. Should be called for all file
523 * descriptors in D-Bus code.
525 * @param handle the Windows HANDLE
528 _dbus_fd_set_close_on_exec (intptr_t handle)
530 if ( !SetHandleInformation( (HANDLE) handle,
531 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE,
532 0 /*disable both flags*/ ) )
534 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError());
539 * Sets a file descriptor to be nonblocking.
541 * @param handle the file descriptor.
542 * @param error address of error location.
543 * @returns #TRUE on success.
546 _dbus_set_fd_nonblocking (int handle,
551 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
553 if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR)
555 DBUS_SOCKET_SET_ERRNO ();
556 dbus_set_error (error, _dbus_error_from_errno (errno),
557 "Failed to set socket %d:%d to nonblocking: %s", handle,
558 _dbus_strerror_from_errno ());
567 * Like _dbus_write() but will use writev() if possible
568 * to write both buffers in sequence. The return value
569 * is the number of bytes written in the first buffer,
570 * plus the number written in the second. If the first
571 * buffer is written successfully and an error occurs
572 * writing the second, the number of bytes in the first
573 * is returned (i.e. the error is ignored), on systems that
574 * don't have writev. Handles EINTR for you.
575 * The second buffer may be #NULL.
577 * @param fd the file descriptor
578 * @param buffer1 first buffer
579 * @param start1 first byte to write in first buffer
580 * @param len1 number of bytes to write from first buffer
581 * @param buffer2 second buffer, or #NULL
582 * @param start2 first byte to write in second buffer
583 * @param len2 number of bytes to write in second buffer
584 * @returns total bytes written from both buffers, or -1 on error
587 _dbus_write_socket_two (int fd,
588 const DBusString *buffer1,
591 const DBusString *buffer2,
601 _dbus_assert (buffer1 != NULL);
602 _dbus_assert (start1 >= 0);
603 _dbus_assert (start2 >= 0);
604 _dbus_assert (len1 >= 0);
605 _dbus_assert (len2 >= 0);
608 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
611 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
619 vectors[0].buf = (char*) data1;
620 vectors[0].len = len1;
621 vectors[1].buf = (char*) data2;
622 vectors[1].len = len2;
626 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd);
635 if (rc == SOCKET_ERROR)
637 DBUS_SOCKET_SET_ERRNO ();
638 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ());
642 _dbus_verbose ("WSASend: = %ld\n", bytes_written);
644 if (bytes_written < 0 && errno == EINTR)
647 return bytes_written;
651 _dbus_socket_is_invalid (int fd)
653 return fd == INVALID_SOCKET ? TRUE : FALSE;
659 * Opens the client side of a Windows named pipe. The connection D-BUS
660 * file descriptor index is returned. It is set up as nonblocking.
662 * @param path the path to named pipe socket
663 * @param error return location for error code
664 * @returns connection D-BUS file descriptor or -1 on error
667 _dbus_connect_named_pipe (const char *path,
670 _dbus_assert_not_reached ("not implemented");
676 * @returns #FALSE if no memory
679 _dbus_win_startup_winsock (void)
681 /* Straight from MSDN, deuglified */
683 /* Protected by _DBUS_LOCK_sysdeps */
684 static dbus_bool_t beenhere = FALSE;
686 WORD wVersionRequested;
690 if (!_DBUS_LOCK (sysdeps))
696 wVersionRequested = MAKEWORD (2, 0);
698 err = WSAStartup (wVersionRequested, &wsaData);
701 _dbus_assert_not_reached ("Could not initialize WinSock");
705 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL
706 * supports versions greater than 2.0 in addition to 2.0, it will
707 * still return 2.0 in wVersion since that is the version we
710 if (LOBYTE (wsaData.wVersion) != 2 ||
711 HIBYTE (wsaData.wVersion) != 0)
713 _dbus_assert_not_reached ("No usable WinSock found");
720 _DBUS_UNLOCK (sysdeps);
732 /************************************************************************
736 ************************************************************************/
739 * Measure the message length without terminating nul
741 int _dbus_printf_string_upper_bound (const char *format,
744 /* MSVCRT's vsnprintf semantics are a bit different */
750 bufsize = sizeof (buf);
751 DBUS_VA_COPY (args_copy, args);
752 len = _vsnprintf (buf, bufsize - 1, format, args_copy);
755 while (len == -1) /* try again */
761 p = malloc (bufsize);
766 DBUS_VA_COPY (args_copy, args);
767 len = _vsnprintf (p, bufsize - 1, format, args_copy);
777 * Returns the UTF-16 form of a UTF-8 string. The result should be
778 * freed with dbus_free() when no longer needed.
780 * @param str the UTF-8 string
781 * @param error return location for error code
784 _dbus_win_utf8_to_utf16 (const char *str,
791 _dbus_string_init_const (&s, str);
793 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s)))
795 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8");
799 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
803 _dbus_win_set_error_from_win_error (error, GetLastError ());
807 retval = dbus_new (wchar_t, n);
811 _DBUS_SET_OOM (error);
815 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n)
818 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency");
826 * Returns the UTF-8 form of a UTF-16 string. The result should be
827 * freed with dbus_free() when no longer needed.
829 * @param str the UTF-16 string
830 * @param error return location for error code
833 _dbus_win_utf16_to_utf8 (const wchar_t *str,
839 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
843 _dbus_win_set_error_from_win_error (error, GetLastError ());
847 retval = dbus_malloc (n);
851 _DBUS_SET_OOM (error);
855 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n)
858 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency");
870 /************************************************************************
873 ************************************************************************/
876 _dbus_win_account_to_sid (const wchar_t *waccount,
880 dbus_bool_t retval = FALSE;
881 DWORD sid_length, wdomain_length;
889 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length,
890 NULL, &wdomain_length, &use) &&
891 GetLastError () != ERROR_INSUFFICIENT_BUFFER)
893 _dbus_win_set_error_from_win_error (error, GetLastError ());
897 *ppsid = dbus_malloc (sid_length);
900 _DBUS_SET_OOM (error);
904 wdomain = dbus_new (wchar_t, wdomain_length);
907 _DBUS_SET_OOM (error);
911 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length,
912 wdomain, &wdomain_length, &use))
914 _dbus_win_set_error_from_win_error (error, GetLastError ());
918 if (!IsValidSid ((PSID) *ppsid))
920 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID");
938 /** @} end of sysdeps-win */
942 * The only reason this is separate from _dbus_getpid() is to allow it
943 * on Windows for logging but not for other purposes.
945 * @returns process ID to put in log messages
948 _dbus_pid_for_log (void)
950 return _dbus_getpid ();
955 static BOOL is_winxp_sp3_or_lower()
957 OSVERSIONINFOEX osvi;
958 DWORDLONG dwlConditionMask = 0;
959 int op=VER_LESS_EQUAL;
961 // Initialize the OSVERSIONINFOEX structure.
963 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
964 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
965 osvi.dwMajorVersion = 5;
966 osvi.dwMinorVersion = 1;
967 osvi.wServicePackMajor = 3;
968 osvi.wServicePackMinor = 0;
970 // Initialize the condition mask.
972 VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, op );
973 VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, op );
974 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, op );
975 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMINOR, op );
979 return VerifyVersionInfo(
981 VER_MAJORVERSION | VER_MINORVERSION |
982 VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
987 * @param sid points to sid buffer, need to be freed with LocalFree()
988 * @param process_id the process id for which the sid should be returned
989 * @returns process sid
992 _dbus_getsid(char **sid, dbus_pid_t process_id)
994 HANDLE process_token = INVALID_HANDLE_VALUE;
995 TOKEN_USER *token_user = NULL;
1000 HANDLE process_handle = OpenProcess(is_winxp_sp3_or_lower() ? PROCESS_QUERY_INFORMATION : PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
1002 if (!OpenProcessToken (process_handle, TOKEN_QUERY, &process_token))
1004 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ());
1007 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n)
1008 && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
1009 || (token_user = alloca (n)) == NULL
1010 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n))
1012 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ());
1015 psid = token_user->User.Sid;
1016 if (!IsValidSid (psid))
1018 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1021 if (!ConvertSidToStringSidA (psid, sid))
1023 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1030 CloseHandle (process_handle);
1031 if (process_token != INVALID_HANDLE_VALUE)
1032 CloseHandle (process_token);
1034 _dbus_verbose("_dbus_getsid() got '%s' and returns %d\n", *sid, retval);
1039 /************************************************************************
1043 ************************************************************************/
1046 * Creates a full-duplex pipe (as in socketpair()).
1047 * Sets both ends of the pipe nonblocking.
1049 * @param fd1 return location for one end
1050 * @param fd2 return location for the other end
1051 * @param blocking #TRUE if pipe should be blocking
1052 * @param error error return
1053 * @returns #FALSE on failure (if error is set)
1056 _dbus_full_duplex_pipe (int *fd1,
1058 dbus_bool_t blocking,
1061 SOCKET temp, socket1 = -1, socket2 = -1;
1062 struct sockaddr_in saddr;
1066 if (!_dbus_win_startup_winsock ())
1068 _DBUS_SET_OOM (error);
1072 temp = socket (AF_INET, SOCK_STREAM, 0);
1073 if (temp == INVALID_SOCKET)
1075 DBUS_SOCKET_SET_ERRNO ();
1080 saddr.sin_family = AF_INET;
1082 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1084 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR)
1086 DBUS_SOCKET_SET_ERRNO ();
1090 if (listen (temp, 1) == SOCKET_ERROR)
1092 DBUS_SOCKET_SET_ERRNO ();
1096 len = sizeof (saddr);
1097 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR)
1099 DBUS_SOCKET_SET_ERRNO ();
1103 socket1 = socket (AF_INET, SOCK_STREAM, 0);
1104 if (socket1 == INVALID_SOCKET)
1106 DBUS_SOCKET_SET_ERRNO ();
1110 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR)
1112 DBUS_SOCKET_SET_ERRNO ();
1116 socket2 = accept (temp, (struct sockaddr *) &saddr, &len);
1117 if (socket2 == INVALID_SOCKET)
1119 DBUS_SOCKET_SET_ERRNO ();
1126 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR)
1128 DBUS_SOCKET_SET_ERRNO ();
1133 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR)
1135 DBUS_SOCKET_SET_ERRNO ();
1143 _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n",
1144 *fd1, socket1, *fd2, socket2);
1151 closesocket (socket2);
1153 closesocket (socket1);
1157 dbus_set_error (error, _dbus_error_from_errno (errno),
1158 "Could not setup socket pair: %s",
1159 _dbus_strerror_from_errno ());
1165 * Wrapper for poll().
1167 * @param fds the file descriptors to poll
1168 * @param n_fds number of descriptors in the array
1169 * @param timeout_milliseconds timeout or -1 for infinite
1170 * @returns numbers of fds with revents, or <0 on error
1173 _dbus_poll (DBusPollFD *fds,
1175 int timeout_milliseconds)
1177 #define USE_CHRIS_IMPL 0
1181 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1182 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1190 #define DBUS_STACK_WSAEVENTS 256
1191 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS];
1192 WSAEVENT *pEvents = NULL;
1193 if (n_fds > DBUS_STACK_WSAEVENTS)
1194 pEvents = calloc(sizeof(WSAEVENT), n_fds);
1196 pEvents = eventsOnStack;
1199 #ifdef DBUS_ENABLE_VERBOSE_MODE
1201 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds);
1202 for (i = 0; i < n_fds; i++)
1204 DBusPollFD *fdp = &fds[i];
1207 if (fdp->events & _DBUS_POLLIN)
1208 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1210 if (fdp->events & _DBUS_POLLOUT)
1211 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1213 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1215 // FIXME: more robust code for long msg
1216 // create on heap when msg[] becomes too small
1217 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1219 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1223 msgp += sprintf (msgp, "\n");
1224 _dbus_verbose ("%s",msg);
1226 for (i = 0; i < n_fds; i++)
1228 DBusPollFD *fdp = &fds[i];
1230 long lNetworkEvents = FD_OOB;
1232 ev = WSACreateEvent();
1234 if (fdp->events & _DBUS_POLLIN)
1235 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE;
1237 if (fdp->events & _DBUS_POLLOUT)
1238 lNetworkEvents |= FD_WRITE | FD_CONNECT;
1240 WSAEventSelect(fdp->fd, ev, lNetworkEvents);
1246 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE);
1248 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1250 DBUS_SOCKET_SET_ERRNO ();
1251 if (errno != WSAEWOULDBLOCK)
1252 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ());
1255 else if (ready == WSA_WAIT_TIMEOUT)
1257 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n");
1260 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds))
1263 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready);
1265 for (i = 0; i < n_fds; i++)
1267 DBusPollFD *fdp = &fds[i];
1268 WSANETWORKEVENTS ne;
1272 WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne);
1274 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1275 fdp->revents |= _DBUS_POLLIN;
1277 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1278 fdp->revents |= _DBUS_POLLOUT;
1280 if (ne.lNetworkEvents & (FD_OOB))
1281 fdp->revents |= _DBUS_POLLERR;
1283 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1284 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1286 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1287 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1289 if (ne.lNetworkEvents & (FD_OOB))
1290 msgp += sprintf (msgp, "E:%d ", fdp->fd);
1292 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
1294 if(ne.lNetworkEvents)
1297 WSAEventSelect(fdp->fd, pEvents[i], 0);
1300 msgp += sprintf (msgp, "\n");
1301 _dbus_verbose ("%s",msg);
1305 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!");
1309 for(i = 0; i < n_fds; i++)
1311 WSACloseEvent(pEvents[i]);
1314 if (n_fds > DBUS_STACK_WSAEVENTS)
1319 #else /* USE_CHRIS_IMPL */
1321 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1322 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1325 fd_set read_set, write_set, err_set;
1331 FD_ZERO (&read_set);
1332 FD_ZERO (&write_set);
1336 #ifdef DBUS_ENABLE_VERBOSE_MODE
1338 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds);
1339 for (i = 0; i < n_fds; i++)
1341 DBusPollFD *fdp = &fds[i];
1344 if (fdp->events & _DBUS_POLLIN)
1345 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1347 if (fdp->events & _DBUS_POLLOUT)
1348 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1350 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1352 // FIXME: more robust code for long msg
1353 // create on heap when msg[] becomes too small
1354 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1356 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1360 msgp += sprintf (msgp, "\n");
1361 _dbus_verbose ("%s",msg);
1363 for (i = 0; i < n_fds; i++)
1365 DBusPollFD *fdp = &fds[i];
1367 if (fdp->events & _DBUS_POLLIN)
1368 FD_SET (fdp->fd, &read_set);
1370 if (fdp->events & _DBUS_POLLOUT)
1371 FD_SET (fdp->fd, &write_set);
1373 FD_SET (fdp->fd, &err_set);
1375 max_fd = MAX (max_fd, fdp->fd);
1378 // Avoid random lockups with send(), for lack of a better solution so far
1379 tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000;
1380 tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000;
1382 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1384 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1386 DBUS_SOCKET_SET_ERRNO ();
1387 if (errno != WSAEWOULDBLOCK)
1388 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ());
1390 else if (ready == 0)
1391 _dbus_verbose ("select: = 0\n");
1395 #ifdef DBUS_ENABLE_VERBOSE_MODE
1397 msgp += sprintf (msgp, "select: = %d:\n\t", ready);
1399 for (i = 0; i < n_fds; i++)
1401 DBusPollFD *fdp = &fds[i];
1403 if (FD_ISSET (fdp->fd, &read_set))
1404 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1406 if (FD_ISSET (fdp->fd, &write_set))
1407 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1409 if (FD_ISSET (fdp->fd, &err_set))
1410 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1412 msgp += sprintf (msgp, "\n");
1413 _dbus_verbose ("%s",msg);
1416 for (i = 0; i < n_fds; i++)
1418 DBusPollFD *fdp = &fds[i];
1422 if (FD_ISSET (fdp->fd, &read_set))
1423 fdp->revents |= _DBUS_POLLIN;
1425 if (FD_ISSET (fdp->fd, &write_set))
1426 fdp->revents |= _DBUS_POLLOUT;
1428 if (FD_ISSET (fdp->fd, &err_set))
1429 fdp->revents |= _DBUS_POLLERR;
1433 #endif /* USE_CHRIS_IMPL */
1439 /******************************************************************************
1441 Original CVS version of dbus-sysdeps.c
1443 ******************************************************************************/
1444 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
1445 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation)
1447 * Copyright (C) 2002, 2003 Red Hat, Inc.
1448 * Copyright (C) 2003 CodeFactory AB
1449 * Copyright (C) 2005 Novell, Inc.
1451 * Licensed under the Academic Free License version 2.1
1453 * This program is free software; you can redistribute it and/or modify
1454 * it under the terms of the GNU General Public License as published by
1455 * the Free Software Foundation; either version 2 of the License, or
1456 * (at your option) any later version.
1458 * This program is distributed in the hope that it will be useful,
1459 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1460 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1461 * GNU General Public License for more details.
1463 * You should have received a copy of the GNU General Public License
1464 * along with this program; if not, write to the Free Software
1465 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1471 * Exit the process, returning the given value.
1473 * @param code the exit code
1476 _dbus_exit (int code)
1482 * Creates a socket and connects to a socket at the given host
1483 * and port. The connection fd is returned, and is set up as
1486 * @param host the host name to connect to
1487 * @param port the port to connect to
1488 * @param family the address family to listen on, NULL for all
1489 * @param error return location for error code
1490 * @returns connection file descriptor or -1 on error
1493 _dbus_connect_tcp_socket (const char *host,
1498 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error);
1502 _dbus_connect_tcp_socket_with_nonce (const char *host,
1505 const char *noncefile,
1509 struct addrinfo hints;
1510 struct addrinfo *ai, *tmp;
1512 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1514 if (!_dbus_win_startup_winsock ())
1516 _DBUS_SET_OOM (error);
1523 hints.ai_family = AF_UNSPEC;
1524 else if (!strcmp(family, "ipv4"))
1525 hints.ai_family = AF_INET;
1526 else if (!strcmp(family, "ipv6"))
1527 hints.ai_family = AF_INET6;
1530 dbus_set_error (error,
1531 DBUS_ERROR_INVALID_ARGS,
1532 "Unknown address family %s", family);
1535 hints.ai_protocol = IPPROTO_TCP;
1536 hints.ai_socktype = SOCK_STREAM;
1537 #ifdef AI_ADDRCONFIG
1538 hints.ai_flags = AI_ADDRCONFIG;
1543 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1545 dbus_set_error (error,
1546 _dbus_error_from_errno (res),
1547 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1548 host, port, _dbus_strerror(res), res);
1555 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1557 DBUS_SOCKET_SET_ERRNO ();
1558 dbus_set_error (error,
1559 _dbus_error_from_errno (errno),
1560 "Failed to open socket: %s",
1561 _dbus_strerror_from_errno ());
1565 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1567 if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1569 DBUS_SOCKET_SET_ERRNO ();
1582 dbus_set_error (error,
1583 _dbus_error_from_errno (errno),
1584 "Failed to connect to socket \"%s:%s\" %s",
1585 host, port, _dbus_strerror_from_errno ());
1589 if (noncefile != NULL)
1591 DBusString noncefileStr;
1593 if (!_dbus_string_init (&noncefileStr) ||
1594 !_dbus_string_append(&noncefileStr, noncefile))
1597 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1601 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1603 _dbus_string_free (&noncefileStr);
1612 _dbus_fd_set_close_on_exec (fd);
1614 if (!_dbus_set_fd_nonblocking (fd, error))
1624 * Creates a socket and binds it to the given path, then listens on
1625 * the socket. The socket is set to be nonblocking. In case of port=0
1626 * a random free port is used and returned in the port parameter.
1627 * If inaddr_any is specified, the hostname is ignored.
1629 * @param host the host name to listen on
1630 * @param port the port to listen on, if zero a free port will be used
1631 * @param family the address family to listen on, NULL for all
1632 * @param retport string to return the actual port listened on
1633 * @param fds_p location to store returned file descriptors
1634 * @param error return location for errors
1635 * @returns the number of listening file descriptors or -1 on error
1639 _dbus_listen_tcp_socket (const char *host,
1642 DBusString *retport,
1646 int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1;
1647 struct addrinfo hints;
1648 struct addrinfo *ai, *tmp;
1650 // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old
1651 //That's required for family == IPv6(which is the default on Vista if family is not given)
1652 //So we use our own union instead of sockaddr_gen:
1655 struct sockaddr Address;
1656 struct sockaddr_in AddressIn;
1657 struct sockaddr_in6 AddressIn6;
1661 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1663 if (!_dbus_win_startup_winsock ())
1665 _DBUS_SET_OOM (error);
1672 hints.ai_family = AF_UNSPEC;
1673 else if (!strcmp(family, "ipv4"))
1674 hints.ai_family = AF_INET;
1675 else if (!strcmp(family, "ipv6"))
1676 hints.ai_family = AF_INET6;
1679 dbus_set_error (error,
1680 DBUS_ERROR_INVALID_ARGS,
1681 "Unknown address family %s", family);
1685 hints.ai_protocol = IPPROTO_TCP;
1686 hints.ai_socktype = SOCK_STREAM;
1687 #ifdef AI_ADDRCONFIG
1688 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1690 hints.ai_flags = AI_PASSIVE;
1693 redo_lookup_with_port:
1694 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1696 dbus_set_error (error,
1697 _dbus_error_from_errno (res),
1698 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1699 host ? host : "*", port, _dbus_strerror(res), res);
1706 int fd = -1, *newlisten_fd;
1707 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1709 DBUS_SOCKET_SET_ERRNO ();
1710 dbus_set_error (error,
1711 _dbus_error_from_errno (errno),
1712 "Failed to open socket: %s",
1713 _dbus_strerror_from_errno ());
1716 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1718 if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1720 DBUS_SOCKET_SET_ERRNO ();
1721 dbus_set_error (error, _dbus_error_from_errno (errno),
1722 "Failed to bind socket \"%s:%s\": %s",
1723 host ? host : "*", port, _dbus_strerror_from_errno ());
1728 if (listen (fd, 30 /* backlog */) == SOCKET_ERROR)
1730 DBUS_SOCKET_SET_ERRNO ();
1731 dbus_set_error (error, _dbus_error_from_errno (errno),
1732 "Failed to listen on socket \"%s:%s\": %s",
1733 host ? host : "*", port, _dbus_strerror_from_errno ());
1738 newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1));
1742 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1743 "Failed to allocate file handle array");
1746 listen_fd = newlisten_fd;
1747 listen_fd[nlisten_fd] = fd;
1750 if (!_dbus_string_get_length(retport))
1752 /* If the user didn't specify a port, or used 0, then
1753 the kernel chooses a port. After the first address
1754 is bound to, we need to force all remaining addresses
1755 to use the same port */
1756 if (!port || !strcmp(port, "0"))
1758 mysockaddr_gen addr;
1759 socklen_t addrlen = sizeof(addr);
1762 if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR)
1764 DBUS_SOCKET_SET_ERRNO ();
1765 dbus_set_error (error, _dbus_error_from_errno (errno),
1766 "Failed to resolve port \"%s:%s\": %s",
1767 host ? host : "*", port, _dbus_strerror_from_errno());
1770 snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port );
1771 if (!_dbus_string_append(retport, portbuf))
1773 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1777 /* Release current address list & redo lookup */
1778 port = _dbus_string_get_const_data(retport);
1780 goto redo_lookup_with_port;
1784 if (!_dbus_string_append(retport, port))
1786 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1799 _dbus_win_set_errno (WSAEADDRINUSE);
1800 dbus_set_error (error, _dbus_error_from_errno (errno),
1801 "Failed to bind socket \"%s:%s\": %s",
1802 host ? host : "*", port, _dbus_strerror_from_errno ());
1806 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num);
1808 for (i = 0 ; i < nlisten_fd ; i++)
1810 _dbus_fd_set_close_on_exec (listen_fd[i]);
1811 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1824 for (i = 0 ; i < nlisten_fd ; i++)
1825 closesocket (listen_fd[i]);
1826 dbus_free(listen_fd);
1832 * Accepts a connection on a listening socket.
1833 * Handles EINTR for you.
1835 * @param listen_fd the listen file descriptor
1836 * @returns the connection fd of the client, or -1 on error
1839 _dbus_accept (int listen_fd)
1844 client_fd = accept (listen_fd, NULL, NULL);
1846 if (DBUS_SOCKET_IS_INVALID (client_fd))
1848 DBUS_SOCKET_SET_ERRNO ();
1853 _dbus_verbose ("client fd %d accepted\n", client_fd);
1862 _dbus_send_credentials_socket (int handle,
1865 /* FIXME: for the session bus credentials shouldn't matter (?), but
1866 * for the system bus they are presumably essential. A rough outline
1867 * of a way to implement the credential transfer would be this:
1869 * client waits to *read* a byte.
1871 * server creates a named pipe with a random name, sends a byte
1872 * contining its length, and its name.
1874 * client reads the name, connects to it (using Win32 API).
1876 * server waits for connection to the named pipe, then calls
1877 * ImpersonateNamedPipeClient(), notes its now-current credentials,
1878 * calls RevertToSelf(), closes its handles to the named pipe, and
1879 * is done. (Maybe there is some other way to get the SID of a named
1880 * pipe client without having to use impersonation?)
1882 * client closes its handles and is done.
1884 * Ralf: Why not sending credentials over the given this connection ?
1885 * Using named pipes makes it impossible to be connected from a unix client.
1891 _dbus_string_init_const_len (&buf, "\0", 1);
1893 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 );
1895 if (bytes_written < 0 && errno == EINTR)
1898 if (bytes_written < 0)
1900 dbus_set_error (error, _dbus_error_from_errno (errno),
1901 "Failed to write credentials byte: %s",
1902 _dbus_strerror_from_errno ());
1905 else if (bytes_written == 0)
1907 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
1908 "wrote zero bytes writing credentials byte");
1913 _dbus_assert (bytes_written == 1);
1914 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n");
1921 * Reads a single byte which must be nul (an error occurs otherwise),
1922 * and reads unix credentials if available. Fills in pid/uid/gid with
1923 * -1 if no credentials are available. Return value indicates whether
1924 * a byte was read, not whether we got valid credentials. On some
1925 * systems, such as Linux, reading/writing the byte isn't actually
1926 * required, but we do it anyway just to avoid multiple codepaths.
1928 * Fails if no byte is available, so you must select() first.
1930 * The point of the byte is that on some systems we have to
1931 * use sendmsg()/recvmsg() to transmit credentials.
1933 * @param handle the client file descriptor
1934 * @param credentials struct to fill with credentials of client
1935 * @param error location to store error code
1936 * @returns #TRUE on success
1939 _dbus_read_credentials_socket (int handle,
1940 DBusCredentials *credentials,
1950 // could fail due too OOM
1951 if (_dbus_string_init (&buf))
1953 bytes_read = _dbus_read_socket (handle, &buf, 1 );
1956 _dbus_verbose ("got one zero byte from server\n");
1958 _dbus_string_free (&buf);
1961 pid = _dbus_get_peer_pid_from_tcp_handle (handle);
1965 _dbus_credentials_add_pid (credentials, pid);
1967 if (_dbus_getsid (&sid, pid))
1969 if (!_dbus_credentials_add_windows_sid (credentials, sid))
1983 * Checks to make sure the given directory is
1984 * private to the user
1986 * @param dir the name of the directory
1987 * @param error error return
1988 * @returns #FALSE on failure
1991 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error)
1994 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2000 * Appends the given filename to the given directory.
2002 * @todo it might be cute to collapse multiple '/' such as "foo//"
2005 * @param dir the directory name
2006 * @param next_component the filename
2007 * @returns #TRUE on success
2010 _dbus_concat_dir_and_file (DBusString *dir,
2011 const DBusString *next_component)
2013 dbus_bool_t dir_ends_in_slash;
2014 dbus_bool_t file_starts_with_slash;
2016 if (_dbus_string_get_length (dir) == 0 ||
2017 _dbus_string_get_length (next_component) == 0)
2021 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) ||
2022 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1));
2024 file_starts_with_slash =
2025 ('/' == _dbus_string_get_byte (next_component, 0) ||
2026 '\\' == _dbus_string_get_byte (next_component, 0));
2028 if (dir_ends_in_slash && file_starts_with_slash)
2030 _dbus_string_shorten (dir, 1);
2032 else if (!(dir_ends_in_slash || file_starts_with_slash))
2034 if (!_dbus_string_append_byte (dir, '\\'))
2038 return _dbus_string_copy (next_component, 0, dir,
2039 _dbus_string_get_length (dir));
2042 /*---------------- DBusCredentials ----------------------------------*/
2045 * Adds the credentials corresponding to the given username.
2047 * @param credentials credentials to fill in
2048 * @param username the username
2049 * @returns #TRUE if the username existed and we got some credentials
2052 _dbus_credentials_add_from_user (DBusCredentials *credentials,
2053 const DBusString *username)
2055 return _dbus_credentials_add_windows_sid (credentials,
2056 _dbus_string_get_const_data(username));
2060 * Adds the credentials of the current process to the
2061 * passed-in credentials object.
2063 * @param credentials credentials to add to
2064 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added
2068 _dbus_credentials_add_from_current_process (DBusCredentials *credentials)
2070 dbus_bool_t retval = FALSE;
2073 if (!_dbus_getsid(&sid, _dbus_getpid()))
2076 if (!_dbus_credentials_add_pid (credentials, _dbus_getpid()))
2079 if (!_dbus_credentials_add_windows_sid (credentials,sid))
2094 * Append to the string the identity we would like to have when we
2095 * authenticate, on UNIX this is the current process UID and on
2096 * Windows something else, probably a Windows SID string. No escaping
2097 * is required, that is done in dbus-auth.c. The username here
2098 * need not be anything human-readable, it can be the machine-readable
2099 * form i.e. a user id.
2101 * @param str the string to append to
2102 * @returns #FALSE on no memory
2103 * @todo to which class belongs this
2106 _dbus_append_user_from_current_process (DBusString *str)
2108 dbus_bool_t retval = FALSE;
2111 if (!_dbus_getsid(&sid, _dbus_getpid()))
2114 retval = _dbus_string_append (str,sid);
2121 * Gets our process ID
2122 * @returns process ID
2127 return GetCurrentProcessId ();
2130 /** nanoseconds in a second */
2131 #define NANOSECONDS_PER_SECOND 1000000000
2132 /** microseconds in a second */
2133 #define MICROSECONDS_PER_SECOND 1000000
2134 /** milliseconds in a second */
2135 #define MILLISECONDS_PER_SECOND 1000
2136 /** nanoseconds in a millisecond */
2137 #define NANOSECONDS_PER_MILLISECOND 1000000
2138 /** microseconds in a millisecond */
2139 #define MICROSECONDS_PER_MILLISECOND 1000
2142 * Sleeps the given number of milliseconds.
2143 * @param milliseconds number of milliseconds
2146 _dbus_sleep_milliseconds (int milliseconds)
2148 Sleep (milliseconds);
2153 * Get current time, as in gettimeofday(). Never uses the monotonic
2156 * @param tv_sec return location for number of seconds
2157 * @param tv_usec return location for number of microseconds
2160 _dbus_get_real_time (long *tv_sec,
2164 dbus_uint64_t time64;
2166 GetSystemTimeAsFileTime (&ft);
2168 memcpy (&time64, &ft, sizeof (time64));
2170 /* Convert from 100s of nanoseconds since 1601-01-01
2171 * to Unix epoch. Yes, this is Y2038 unsafe.
2173 time64 -= DBUS_INT64_CONSTANT (116444736000000000);
2177 *tv_sec = time64 / 1000000;
2180 *tv_usec = time64 % 1000000;
2184 * Get current time, as in gettimeofday(). Use the monotonic clock if
2185 * available, to avoid problems when the system time changes.
2187 * @param tv_sec return location for number of seconds
2188 * @param tv_usec return location for number of microseconds
2191 _dbus_get_monotonic_time (long *tv_sec,
2194 /* no implementation yet, fall back to wall-clock time */
2195 _dbus_get_real_time (tv_sec, tv_usec);
2199 * signal (SIGPIPE, SIG_IGN);
2202 _dbus_disable_sigpipe (void)
2207 * Creates a directory; succeeds if the directory
2208 * is created or already existed.
2210 * @param filename directory filename
2211 * @param error initialized error object
2212 * @returns #TRUE on success
2215 _dbus_create_directory (const DBusString *filename,
2218 const char *filename_c;
2220 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2222 filename_c = _dbus_string_get_const_data (filename);
2224 if (!CreateDirectoryA (filename_c, NULL))
2226 if (GetLastError () == ERROR_ALREADY_EXISTS)
2229 dbus_set_error (error, DBUS_ERROR_FAILED,
2230 "Failed to create directory %s: %s\n",
2231 filename_c, _dbus_strerror_from_errno ());
2240 * Generates the given number of random bytes,
2241 * using the best mechanism we can come up with.
2243 * @param str the string
2244 * @param n_bytes the number of random bytes to append to string
2245 * @returns #TRUE on success, #FALSE if no memory
2248 _dbus_generate_random_bytes (DBusString *str,
2255 old_len = _dbus_string_get_length (str);
2257 if (!_dbus_string_lengthen (str, n_bytes))
2260 p = _dbus_string_get_data_len (str, old_len, n_bytes);
2262 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
2265 if (!CryptGenRandom (hprov, n_bytes, p))
2267 CryptReleaseContext (hprov, 0);
2271 CryptReleaseContext (hprov, 0);
2277 * Gets the temporary files directory by inspecting the environment variables
2278 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned
2280 * @returns location of temp directory, or #NULL if no memory for locking
2283 _dbus_get_tmpdir(void)
2285 /* Protected by _DBUS_LOCK_sysdeps */
2286 static const char* tmpdir = NULL;
2287 static char buf[1000];
2289 if (!_DBUS_LOCK (sysdeps))
2296 if (!GetTempPathA (sizeof (buf), buf))
2298 _dbus_warn ("GetTempPath failed\n");
2302 /* Drop terminating backslash or slash */
2303 last_slash = _mbsrchr (buf, '\\');
2304 if (last_slash > buf && last_slash[1] == '\0')
2305 last_slash[0] = '\0';
2306 last_slash = _mbsrchr (buf, '/');
2307 if (last_slash > buf && last_slash[1] == '\0')
2308 last_slash[0] = '\0';
2313 _DBUS_UNLOCK (sysdeps);
2315 _dbus_assert(tmpdir != NULL);
2322 * Deletes the given file.
2324 * @param filename the filename
2325 * @param error error location
2327 * @returns #TRUE if unlink() succeeded
2330 _dbus_delete_file (const DBusString *filename,
2333 const char *filename_c;
2335 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2337 filename_c = _dbus_string_get_const_data (filename);
2339 if (DeleteFileA (filename_c) == 0)
2341 dbus_set_error (error, DBUS_ERROR_FAILED,
2342 "Failed to delete file %s: %s\n",
2343 filename_c, _dbus_strerror_from_errno ());
2350 #if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_TESTS)
2352 #if defined(_MSC_VER) || defined(DBUS_WINCE)
2362 * Backtrace Generator
2364 * Copyright 2004 Eric Poech
2365 * Copyright 2004 Robert Shearman
2367 * This library is free software; you can redistribute it and/or
2368 * modify it under the terms of the GNU Lesser General Public
2369 * License as published by the Free Software Foundation; either
2370 * version 2.1 of the License, or (at your option) any later version.
2372 * This library is distributed in the hope that it will be useful,
2373 * but WITHOUT ANY WARRANTY; without even the implied warranty of
2374 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2375 * Lesser General Public License for more details.
2377 * You should have received a copy of the GNU Lesser General Public
2378 * License along with this library; if not, write to the Free Software
2379 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2383 #include <imagehlp.h>
2386 #define DPRINTF _dbus_warn
2394 //#define MAKE_FUNCPTR(f) static typeof(f) * p##f
2396 //MAKE_FUNCPTR(StackWalk);
2397 //MAKE_FUNCPTR(SymGetModuleBase);
2398 //MAKE_FUNCPTR(SymFunctionTableAccess);
2399 //MAKE_FUNCPTR(SymInitialize);
2400 //MAKE_FUNCPTR(SymGetSymFromAddr);
2401 //MAKE_FUNCPTR(SymGetModuleInfo);
2402 static BOOL (WINAPI *pStackWalk)(
2406 LPSTACKFRAME StackFrame,
2407 PVOID ContextRecord,
2408 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2409 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2410 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2411 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2414 static DWORD64 (WINAPI *pSymGetModuleBase)(
2418 static PVOID (WINAPI *pSymFunctionTableAccess)(
2423 static DWORD (WINAPI *pSymGetModuleBase)(
2427 static PVOID (WINAPI *pSymFunctionTableAccess)(
2432 static BOOL (WINAPI *pSymInitialize)(
2434 PSTR UserSearchPath,
2437 static BOOL (WINAPI *pSymGetSymFromAddr)(
2440 PDWORD Displacement,
2441 PIMAGEHLP_SYMBOL Symbol
2443 static BOOL (WINAPI *pSymGetModuleInfo)(
2446 PIMAGEHLP_MODULE ModuleInfo
2448 static DWORD (WINAPI *pSymSetOptions)(
2453 static BOOL init_backtrace()
2455 HMODULE hmodDbgHelp = LoadLibraryA("dbghelp");
2457 #define GETFUNC(x) \
2458 p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \
2466 // GETFUNC(StackWalk);
2467 // GETFUNC(SymGetModuleBase);
2468 // GETFUNC(SymFunctionTableAccess);
2469 // GETFUNC(SymInitialize);
2470 // GETFUNC(SymGetSymFromAddr);
2471 // GETFUNC(SymGetModuleInfo);
2475 pStackWalk = (BOOL (WINAPI *)(
2479 LPSTACKFRAME StackFrame,
2480 PVOID ContextRecord,
2481 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2482 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2483 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2484 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2485 ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk));
2487 pSymGetModuleBase=(DWORD64 (WINAPI *)(
2490 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2491 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2494 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2496 pSymGetModuleBase=(DWORD (WINAPI *)(
2499 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2500 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2503 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2505 pSymInitialize = (BOOL (WINAPI *)(
2507 PSTR UserSearchPath,
2509 ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize));
2510 pSymGetSymFromAddr = (BOOL (WINAPI *)(
2513 PDWORD Displacement,
2514 PIMAGEHLP_SYMBOL Symbol
2515 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr));
2516 pSymGetModuleInfo = (BOOL (WINAPI *)(
2519 PIMAGEHLP_MODULE ModuleInfo
2520 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo));
2521 pSymSetOptions = (DWORD (WINAPI *)(
2523 ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions));
2526 pSymSetOptions(SYMOPT_UNDNAME);
2528 pSymInitialize(GetCurrentProcess(), NULL, TRUE);
2533 static void dump_backtrace_for_thread(HANDLE hThread)
2540 if (!init_backtrace())
2543 /* can't use this function for current thread as GetThreadContext
2544 * doesn't support getting context from current thread */
2545 if (hThread == GetCurrentThread())
2548 DPRINTF("Backtrace:\n");
2550 _DBUS_ZERO(context);
2551 context.ContextFlags = CONTEXT_FULL;
2553 SuspendThread(hThread);
2555 if (!GetThreadContext(hThread, &context))
2557 DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError());
2558 ResumeThread(hThread);
2565 sf.AddrFrame.Offset = context.Ebp;
2566 sf.AddrFrame.Mode = AddrModeFlat;
2567 sf.AddrPC.Offset = context.Eip;
2568 sf.AddrPC.Mode = AddrModeFlat;
2569 dwImageType = IMAGE_FILE_MACHINE_I386;
2571 dwImageType = IMAGE_FILE_MACHINE_AMD64;
2572 sf.AddrPC.Offset = context.Rip;
2573 sf.AddrPC.Mode = AddrModeFlat;
2574 sf.AddrFrame.Offset = context.Rsp;
2575 sf.AddrFrame.Mode = AddrModeFlat;
2576 sf.AddrStack.Offset = context.Rsp;
2577 sf.AddrStack.Mode = AddrModeFlat;
2579 dwImageType = IMAGE_FILE_MACHINE_IA64;
2580 sf.AddrPC.Offset = context.StIIP;
2581 sf.AddrPC.Mode = AddrModeFlat;
2582 sf.AddrFrame.Offset = context.IntSp;
2583 sf.AddrFrame.Mode = AddrModeFlat;
2584 sf.AddrBStore.Offset= context.RsBSP;
2585 sf.AddrBStore.Mode = AddrModeFlat;
2586 sf.AddrStack.Offset = context.IntSp;
2587 sf.AddrStack.Mode = AddrModeFlat;
2589 # error You need to fill in the STACKFRAME structure for your architecture
2592 while (pStackWalk(dwImageType, GetCurrentProcess(),
2593 hThread, &sf, &context, NULL, pSymFunctionTableAccess,
2594 pSymGetModuleBase, NULL))
2597 IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer;
2598 DWORD dwDisplacement;
2600 pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
2601 pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1;
2603 if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset,
2604 &dwDisplacement, pSymbol))
2606 IMAGEHLP_MODULE ModuleInfo;
2607 ModuleInfo.SizeOfStruct = sizeof(ModuleInfo);
2609 if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset,
2611 DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset);
2613 DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName,
2614 sf.AddrPC.Offset - ModuleInfo.BaseOfImage);
2616 else if (dwDisplacement)
2617 DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement);
2619 DPRINTF("4\t%s\n", pSymbol->Name);
2622 ResumeThread(hThread);
2625 static DWORD WINAPI dump_thread_proc(LPVOID lpParameter)
2627 dump_backtrace_for_thread((HANDLE)lpParameter);
2631 /* cannot get valid context from current thread, so we have to execute
2632 * backtrace from another thread */
2633 static void dump_backtrace()
2635 HANDLE hCurrentThread;
2638 DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
2639 GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS);
2640 hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
2642 WaitForSingleObject(hThread, INFINITE);
2643 CloseHandle(hThread);
2644 CloseHandle(hCurrentThread);
2647 #endif /* asserts or tests enabled */
2650 void _dbus_print_backtrace(void)
2656 void _dbus_print_backtrace(void)
2658 _dbus_verbose (" D-Bus not compiled with backtrace support\n");
2662 static dbus_uint32_t fromAscii(char ascii)
2664 if(ascii >= '0' && ascii <= '9')
2666 if(ascii >= 'A' && ascii <= 'F')
2667 return ascii - 'A' + 10;
2668 if(ascii >= 'a' && ascii <= 'f')
2669 return ascii - 'a' + 10;
2673 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
2674 dbus_bool_t create_if_not_found,
2681 HW_PROFILE_INFOA info;
2682 char *lpc = &info.szHwProfileGuid[0];
2685 // the hw-profile guid lives long enough
2686 if(!GetCurrentHwProfileA(&info))
2688 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME
2692 // Form: {12340001-4980-1920-6788-123456789012}
2695 u = ((fromAscii(lpc[0]) << 0) |
2696 (fromAscii(lpc[1]) << 4) |
2697 (fromAscii(lpc[2]) << 8) |
2698 (fromAscii(lpc[3]) << 12) |
2699 (fromAscii(lpc[4]) << 16) |
2700 (fromAscii(lpc[5]) << 20) |
2701 (fromAscii(lpc[6]) << 24) |
2702 (fromAscii(lpc[7]) << 28));
2703 machine_id->as_uint32s[0] = u;
2707 u = ((fromAscii(lpc[0]) << 0) |
2708 (fromAscii(lpc[1]) << 4) |
2709 (fromAscii(lpc[2]) << 8) |
2710 (fromAscii(lpc[3]) << 12) |
2711 (fromAscii(lpc[5]) << 16) |
2712 (fromAscii(lpc[6]) << 20) |
2713 (fromAscii(lpc[7]) << 24) |
2714 (fromAscii(lpc[8]) << 28));
2715 machine_id->as_uint32s[1] = u;
2719 u = ((fromAscii(lpc[0]) << 0) |
2720 (fromAscii(lpc[1]) << 4) |
2721 (fromAscii(lpc[2]) << 8) |
2722 (fromAscii(lpc[3]) << 12) |
2723 (fromAscii(lpc[5]) << 16) |
2724 (fromAscii(lpc[6]) << 20) |
2725 (fromAscii(lpc[7]) << 24) |
2726 (fromAscii(lpc[8]) << 28));
2727 machine_id->as_uint32s[2] = u;
2731 u = ((fromAscii(lpc[0]) << 0) |
2732 (fromAscii(lpc[1]) << 4) |
2733 (fromAscii(lpc[2]) << 8) |
2734 (fromAscii(lpc[3]) << 12) |
2735 (fromAscii(lpc[4]) << 16) |
2736 (fromAscii(lpc[5]) << 20) |
2737 (fromAscii(lpc[6]) << 24) |
2738 (fromAscii(lpc[7]) << 28));
2739 machine_id->as_uint32s[3] = u;
2745 HANDLE _dbus_global_lock (const char *mutexname)
2750 mutex = CreateMutexA( NULL, FALSE, mutexname );
2756 gotMutex = WaitForSingleObject( mutex, INFINITE );
2759 case WAIT_ABANDONED:
2760 ReleaseMutex (mutex);
2761 CloseHandle (mutex);
2772 void _dbus_global_unlock (HANDLE mutex)
2774 ReleaseMutex (mutex);
2775 CloseHandle (mutex);
2778 // for proper cleanup in dbus-daemon
2779 static HANDLE hDBusDaemonMutex = NULL;
2780 static HANDLE hDBusSharedMem = NULL;
2781 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2782 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex";
2783 // sync _dbus_get_autolaunch_address
2784 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex";
2785 // mutex to determine if dbus-daemon is already started (per user)
2786 static const char *cDBusDaemonMutex = "DBusDaemonMutex";
2787 // named shm for dbus adress info (per user)
2788 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo";
2791 _dbus_get_install_root_as_hash(DBusString *out)
2793 DBusString install_path;
2795 char path[MAX_PATH*2];
2796 int path_size = sizeof(path);
2798 if (!_dbus_get_install_root(path,path_size))
2801 _dbus_string_init(&install_path);
2802 _dbus_string_append(&install_path,path);
2804 _dbus_string_init(out);
2805 _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path));
2807 if (!_dbus_sha_compute (&install_path, out))
2814 _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope)
2816 _dbus_string_init(out);
2817 _dbus_string_append(out,basestring);
2823 else if (strcmp(scope,"*install-path") == 0
2824 // for 1.3 compatibility
2825 || strcmp(scope,"install-path") == 0)
2828 if (!_dbus_get_install_root_as_hash(&temp))
2830 _dbus_string_free(out);
2833 _dbus_string_append(out,"-");
2834 _dbus_string_append(out,_dbus_string_get_const_data(&temp));
2835 _dbus_string_free(&temp);
2837 else if (strcmp(scope,"*user") == 0)
2839 _dbus_string_append(out,"-");
2840 if (!_dbus_append_user_from_current_process(out))
2842 _dbus_string_free(out);
2846 else if (strlen(scope) > 0)
2848 _dbus_string_append(out,"-");
2849 _dbus_string_append(out,scope);
2856 _dbus_get_shm_name (DBusString *out,const char *scope)
2858 return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope);
2862 _dbus_get_mutex_name (DBusString *out,const char *scope)
2864 return _dbus_get_address_string (out,cDBusDaemonMutex,scope);
2868 _dbus_daemon_is_session_bus_address_published (const char *scope)
2871 DBusString mutex_name;
2873 if (!_dbus_get_mutex_name(&mutex_name,scope))
2875 _dbus_string_free( &mutex_name );
2879 if (hDBusDaemonMutex)
2882 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2883 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2885 // we use CreateMutex instead of OpenMutex because of possible race conditions,
2886 // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx
2887 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2889 /* The client uses mutex ownership to detect a running server, so the server should do so too.
2890 Fortunally the client deletes the mutex in the lock protected area, so checking presence
2893 _dbus_global_unlock( lock );
2895 _dbus_string_free( &mutex_name );
2897 if (hDBusDaemonMutex == NULL)
2899 if (GetLastError() == ERROR_ALREADY_EXISTS)
2901 CloseHandle(hDBusDaemonMutex);
2902 hDBusDaemonMutex = NULL;
2905 // mutex wasn't created before, so return false.
2906 // We leave the mutex name allocated for later reusage
2907 // in _dbus_daemon_publish_session_bus_address.
2912 _dbus_daemon_publish_session_bus_address (const char* address, const char *scope)
2915 char *shared_addr = NULL;
2916 DBusString shm_name;
2917 DBusString mutex_name;
2919 _dbus_assert (address);
2921 if (!_dbus_get_mutex_name(&mutex_name,scope))
2923 _dbus_string_free( &mutex_name );
2927 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2928 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2930 if (!hDBusDaemonMutex)
2932 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2934 _dbus_string_free( &mutex_name );
2936 // acquire the mutex
2937 if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0)
2939 _dbus_global_unlock( lock );
2940 CloseHandle( hDBusDaemonMutex );
2944 if (!_dbus_get_shm_name(&shm_name,scope))
2946 _dbus_string_free( &shm_name );
2947 _dbus_global_unlock( lock );
2952 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2953 0, strlen( address ) + 1, _dbus_string_get_const_data(&shm_name) );
2954 _dbus_assert( hDBusSharedMem );
2956 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 );
2958 _dbus_assert (shared_addr);
2960 strcpy( shared_addr, address);
2963 UnmapViewOfFile( shared_addr );
2965 _dbus_global_unlock( lock );
2966 _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) );
2968 _dbus_string_free( &shm_name );
2973 _dbus_daemon_unpublish_session_bus_address (void)
2977 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2978 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2980 CloseHandle( hDBusSharedMem );
2982 hDBusSharedMem = NULL;
2984 ReleaseMutex( hDBusDaemonMutex );
2986 CloseHandle( hDBusDaemonMutex );
2988 hDBusDaemonMutex = NULL;
2990 _dbus_global_unlock( lock );
2994 _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name)
3002 // we know that dbus-daemon is available, so we wait until shm is available
3003 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name));
3004 if( sharedMem == 0 )
3006 if ( sharedMem != 0)
3010 if( sharedMem == 0 )
3013 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 );
3018 _dbus_string_init( address );
3020 _dbus_string_append( address, shared_addr );
3023 UnmapViewOfFile( shared_addr );
3025 CloseHandle( sharedMem );
3031 _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope)
3035 DBusString mutex_name;
3036 dbus_bool_t bRet = TRUE;
3038 if (!_dbus_get_mutex_name(&mutex_name,scope))
3040 _dbus_string_free( &mutex_name );
3044 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
3045 lock = _dbus_global_lock( cUniqueDBusInitMutex );
3048 daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
3049 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT)
3051 ReleaseMutex (daemon);
3052 CloseHandle (daemon);
3054 _dbus_global_unlock( lock );
3055 _dbus_string_free( &mutex_name );
3060 bRet = _dbus_get_autolaunch_shm( address, shm_name );
3063 CloseHandle ( daemon );
3065 _dbus_global_unlock( lock );
3066 _dbus_string_free( &mutex_name );
3072 _dbus_get_autolaunch_address (const char *scope, DBusString *address,
3077 PROCESS_INFORMATION pi;
3078 dbus_bool_t retval = FALSE;
3080 char dbus_exe_path[MAX_PATH];
3081 char dbus_args[MAX_PATH * 2];
3082 const char * daemon_name = DBUS_DAEMON_NAME ".exe";
3083 DBusString shm_name;
3085 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3087 if (!_dbus_get_shm_name(&shm_name,scope))
3089 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name");
3093 mutex = _dbus_global_lock ( cDBusAutolaunchMutex );
3095 if (_dbus_daemon_already_runs(address,&shm_name,scope))
3097 _dbus_verbose( "found running dbus daemon at %s\n",
3098 _dbus_string_get_const_data (&shm_name) );
3103 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3105 // Look in directory containing dbus shared library
3107 char dbus_module_path[MAX_PATH];
3110 _dbus_verbose( "did not found dbus daemon executable on default search path, "
3111 "trying path where dbus shared library is located");
3113 hmod = _dbus_win_get_dll_hmodule();
3114 rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path));
3117 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name");
3123 char *ext_idx = strrchr(dbus_module_path, '\\');
3126 if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3128 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable");
3130 printf ("please add the path to %s to your PATH environment variable\n", daemon_name);
3131 printf ("or start the daemon manually\n\n");
3134 _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path);
3140 ZeroMemory( &si, sizeof(si) );
3142 ZeroMemory( &pi, sizeof(pi) );
3144 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session");
3146 // argv[i] = "--config-file=bus\\session.conf";
3147 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args);
3148 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
3150 CloseHandle (pi.hThread);
3151 CloseHandle (pi.hProcess);
3152 retval = _dbus_get_autolaunch_shm( address, &shm_name );
3153 if (retval == FALSE)
3154 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon");
3158 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon");
3164 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3166 _DBUS_ASSERT_ERROR_IS_SET (error);
3168 _dbus_global_unlock (mutex);
3174 /** Makes the file readable by every user in the system.
3176 * @param filename the filename
3177 * @param error error location
3178 * @returns #TRUE if the file's permissions could be changed.
3181 _dbus_make_file_world_readable(const DBusString *filename,
3189 * Atomically increments an integer
3191 * @param atomic pointer to the integer to increment
3192 * @returns the value before incrementing
3196 _dbus_atomic_inc (DBusAtomic *atomic)
3198 // +/- 1 is needed here!
3199 // no volatile argument with mingw
3200 return InterlockedIncrement (&atomic->value) - 1;
3204 * Atomically decrement an integer
3206 * @param atomic pointer to the integer to decrement
3207 * @returns the value before decrementing
3211 _dbus_atomic_dec (DBusAtomic *atomic)
3213 // +/- 1 is needed here!
3214 // no volatile argument with mingw
3215 return InterlockedDecrement (&atomic->value) + 1;
3219 * Atomically get the value of an integer. It may change at any time
3220 * thereafter, so this is mostly only useful for assertions.
3222 * @param atomic pointer to the integer to get
3223 * @returns the value at this moment
3226 _dbus_atomic_get (DBusAtomic *atomic)
3228 /* In this situation, GLib issues a MemoryBarrier() and then returns
3229 * atomic->value. However, mingw from mingw.org (not to be confused with
3230 * mingw-w64 from mingw-w64.sf.net) does not have MemoryBarrier in its
3231 * headers, so we have to get a memory barrier some other way.
3233 * InterlockedIncrement is older, and is documented on MSDN to be a full
3234 * memory barrier, so let's use that.
3238 InterlockedExchange (&dummy, 1);
3240 return atomic->value;
3244 * Called when the bus daemon is signaled to reload its configuration; any
3245 * caches should be nuked. Of course any caches that need explicit reload
3246 * are probably broken, but c'est la vie.
3251 _dbus_flush_caches (void)
3256 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently
3257 * for Winsock so is abstracted)
3259 * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK
3262 _dbus_get_is_errno_eagain_or_ewouldblock (void)
3264 return errno == WSAEWOULDBLOCK;
3268 * return the absolute path of the dbus installation
3270 * @param prefix buffer for installation path
3271 * @param len length of buffer
3272 * @returns #FALSE on failure
3275 _dbus_get_install_root(char *prefix, int len)
3277 //To find the prefix, we cut the filename and also \bin\ if present
3281 pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len);
3282 if ( pathLength == 0 || GetLastError() != 0 ) {
3286 lastSlash = _mbsrchr(prefix, '\\');
3287 if (lastSlash == NULL) {
3291 //cut off binary name
3294 //cut possible "\\bin"
3296 //this fails if we are in a double-byte system codepage and the
3297 //folder's name happens to end with the *bytes*
3298 //"\\bin"... (I.e. the second byte of some Han character and then
3299 //the Latin "bin", but that is not likely I think...
3300 if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0)
3302 else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0)
3304 else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0)
3311 find config file either from installation or build root according to
3312 the following path layout
3314 bin/dbus-daemon[d].exe
3315 etc/<config-file>.conf *or* etc/dbus-1/<config-file>.conf
3316 (the former above is what dbus4win uses, the latter above is
3317 what a "normal" Unix-style "make install" uses)
3320 bin/dbus-daemon[d].exe
3321 bus/<config-file>.conf
3324 _dbus_get_config_file_name(DBusString *config_file, char *s)
3326 char path[MAX_PATH*2];
3327 int path_size = sizeof(path);
3329 if (!_dbus_get_install_root(path,path_size))
3332 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3334 strcat(path,"etc\\");
3336 if (_dbus_file_exists(path))
3338 // find path from executable
3339 if (!_dbus_string_append (config_file, path))
3344 if (!_dbus_get_install_root(path,path_size))
3346 if(strlen(s) + 11 + strlen(path) > sizeof(path)-2)
3348 strcat(path,"etc\\dbus-1\\");
3351 if (_dbus_file_exists(path))
3353 if (!_dbus_string_append (config_file, path))
3358 if (!_dbus_get_install_root(path,path_size))
3360 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3362 strcat(path,"bus\\");
3365 if (_dbus_file_exists(path))
3367 if (!_dbus_string_append (config_file, path))
3375 /* See comment in dbus-sysdeps-unix.c */
3377 _dbus_lookup_session_address (dbus_bool_t *supported,
3378 DBusString *address,
3381 /* Probably fill this in with something based on COM? */
3387 * Appends the directory in which a keyring for the given credentials
3388 * should be stored. The credentials should have either a Windows or
3389 * UNIX user in them. The directory should be an absolute path.
3391 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably
3392 * be something else, since the dotfile convention is not normal on Windows.
3394 * @param directory string to append directory to
3395 * @param credentials credentials the directory should be for
3397 * @returns #FALSE on no memory
3400 _dbus_append_keyring_directory_for_credentials (DBusString *directory,
3401 DBusCredentials *credentials)
3405 const char *homepath;
3406 const char *homedrive;
3408 _dbus_assert (credentials != NULL);
3409 _dbus_assert (!_dbus_credentials_are_anonymous (credentials));
3411 if (!_dbus_string_init (&homedir))
3414 homedrive = _dbus_getenv("HOMEDRIVE");
3415 if (homedrive != NULL && *homedrive != '\0')
3417 _dbus_string_append(&homedir,homedrive);
3420 homepath = _dbus_getenv("HOMEPATH");
3421 if (homepath != NULL && *homepath != '\0')
3423 _dbus_string_append(&homedir,homepath);
3426 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3428 const char *override;
3430 override = _dbus_getenv ("DBUS_TEST_HOMEDIR");
3431 if (override != NULL && *override != '\0')
3433 _dbus_string_set_length (&homedir, 0);
3434 if (!_dbus_string_append (&homedir, override))
3437 _dbus_verbose ("Using fake homedir for testing: %s\n",
3438 _dbus_string_get_const_data (&homedir));
3442 /* Not strictly thread-safe, but if we fail at thread-safety here,
3443 * the worst that will happen is some extra warnings. */
3444 static dbus_bool_t already_warned = FALSE;
3445 if (!already_warned)
3447 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3448 already_warned = TRUE;
3455 /* It's not possible to create a .something directory in Windows CE
3456 using the file explorer. */
3457 #define KEYRING_DIR "dbus-keyrings"
3459 #define KEYRING_DIR ".dbus-keyrings"
3462 _dbus_string_init_const (&dotdir, KEYRING_DIR);
3463 if (!_dbus_concat_dir_and_file (&homedir,
3467 if (!_dbus_string_copy (&homedir, 0,
3468 directory, _dbus_string_get_length (directory))) {
3472 _dbus_string_free (&homedir);
3476 _dbus_string_free (&homedir);
3480 /** Checks if a file exists
3482 * @param file full path to the file
3483 * @returns #TRUE if file exists
3486 _dbus_file_exists (const char *file)
3488 DWORD attributes = GetFileAttributesA (file);
3490 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND)
3497 * A wrapper around strerror() because some platforms
3498 * may be lame and not have strerror().
3500 * @param error_number errno.
3501 * @returns error description.
3504 _dbus_strerror (int error_number)
3512 switch (error_number)
3515 return "Interrupted function call";
3517 return "Permission denied";
3519 return "Bad address";
3521 return "Invalid argument";
3523 return "Too many open files";
3524 case WSAEWOULDBLOCK:
3525 return "Resource temporarily unavailable";
3526 case WSAEINPROGRESS:
3527 return "Operation now in progress";
3529 return "Operation already in progress";
3531 return "Socket operation on nonsocket";
3532 case WSAEDESTADDRREQ:
3533 return "Destination address required";
3535 return "Message too long";
3537 return "Protocol wrong type for socket";
3538 case WSAENOPROTOOPT:
3539 return "Bad protocol option";
3540 case WSAEPROTONOSUPPORT:
3541 return "Protocol not supported";
3542 case WSAESOCKTNOSUPPORT:
3543 return "Socket type not supported";
3545 return "Operation not supported";
3546 case WSAEPFNOSUPPORT:
3547 return "Protocol family not supported";
3548 case WSAEAFNOSUPPORT:
3549 return "Address family not supported by protocol family";
3551 return "Address already in use";
3552 case WSAEADDRNOTAVAIL:
3553 return "Cannot assign requested address";
3555 return "Network is down";
3556 case WSAENETUNREACH:
3557 return "Network is unreachable";
3559 return "Network dropped connection on reset";
3560 case WSAECONNABORTED:
3561 return "Software caused connection abort";
3563 return "Connection reset by peer";
3565 return "No buffer space available";
3567 return "Socket is already connected";
3569 return "Socket is not connected";
3571 return "Cannot send after socket shutdown";
3573 return "Connection timed out";
3574 case WSAECONNREFUSED:
3575 return "Connection refused";
3577 return "Host is down";
3578 case WSAEHOSTUNREACH:
3579 return "No route to host";
3581 return "Too many processes";
3583 return "Graceful shutdown in progress";
3584 case WSATYPE_NOT_FOUND:
3585 return "Class type not found";
3586 case WSAHOST_NOT_FOUND:
3587 return "Host not found";
3589 return "Nonauthoritative host not found";
3590 case WSANO_RECOVERY:
3591 return "This is a nonrecoverable error";
3593 return "Valid name, no data record of requested type";
3594 case WSA_INVALID_HANDLE:
3595 return "Specified event object handle is invalid";
3596 case WSA_INVALID_PARAMETER:
3597 return "One or more parameters are invalid";
3598 case WSA_IO_INCOMPLETE:
3599 return "Overlapped I/O event object not in signaled state";
3600 case WSA_IO_PENDING:
3601 return "Overlapped operations will complete later";
3602 case WSA_NOT_ENOUGH_MEMORY:
3603 return "Insufficient memory available";
3604 case WSA_OPERATION_ABORTED:
3605 return "Overlapped operation aborted";
3606 #ifdef WSAINVALIDPROCTABLE
3608 case WSAINVALIDPROCTABLE:
3609 return "Invalid procedure table from service provider";
3611 #ifdef WSAINVALIDPROVIDER
3613 case WSAINVALIDPROVIDER:
3614 return "Invalid service provider version number";
3616 #ifdef WSAPROVIDERFAILEDINIT
3618 case WSAPROVIDERFAILEDINIT:
3619 return "Unable to initialize a service provider";
3622 case WSASYSCALLFAILURE:
3623 return "System call failure";
3625 msg = strerror (error_number);
3634 * Assigns an error name and message corresponding to a Win32 error
3635 * code to a DBusError. Does nothing if error is #NULL.
3637 * @param error the error.
3638 * @param code the Win32 error code
3641 _dbus_win_set_error_from_win_error (DBusError *error,
3646 /* As we want the English message, use the A API */
3647 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
3648 FORMAT_MESSAGE_IGNORE_INSERTS |
3649 FORMAT_MESSAGE_FROM_SYSTEM,
3650 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US),
3651 (LPSTR) &msg, 0, NULL);
3656 msg_copy = dbus_malloc (strlen (msg));
3657 strcpy (msg_copy, msg);
3660 dbus_set_error (error, "win32.error", "%s", msg_copy);
3663 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
3667 _dbus_win_warn_win_error (const char *message,
3672 dbus_error_init (&error);
3673 _dbus_win_set_error_from_win_error (&error, code);
3674 _dbus_warn ("%s: %s\n", message, error.message);
3675 dbus_error_free (&error);
3679 * Removes a directory; Directory must be empty
3681 * @param filename directory filename
3682 * @param error initialized error object
3683 * @returns #TRUE on success
3686 _dbus_delete_directory (const DBusString *filename,
3689 const char *filename_c;
3691 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3693 filename_c = _dbus_string_get_const_data (filename);
3695 if (RemoveDirectoryA (filename_c) == 0)
3697 char *emsg = _dbus_win_error_string (GetLastError ());
3698 dbus_set_error (error, _dbus_win_error_from_last_error (),
3699 "Failed to remove directory %s: %s",
3701 _dbus_win_free_error_string (emsg);
3709 * Checks whether the filename is an absolute path
3711 * @param filename the filename
3712 * @returns #TRUE if an absolute path
3715 _dbus_path_is_absolute (const DBusString *filename)
3717 if (_dbus_string_get_length (filename) > 0)
3718 return _dbus_string_get_byte (filename, 1) == ':'
3719 || _dbus_string_get_byte (filename, 0) == '\\'
3720 || _dbus_string_get_byte (filename, 0) == '/';
3726 _dbus_check_setuid (void)
3731 /** @} end of sysdeps-win */
3732 /* tests in dbus-sysdeps-util.c */