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"
58 /* Declarations missing in mingw's and windows sdk 7.0 headers */
59 extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid);
60 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). */
84 #ifndef PROCESS_QUERY_LIMITED_INFORMATION
85 /* MinGW32 < 4 does not define this value in its headers */
86 #define PROCESS_QUERY_LIMITED_INFORMATION (0x1000)
89 typedef int socklen_t;
93 _dbus_win_set_errno (int err)
102 static BOOL is_winxp_sp3_or_lower();
105 * _MIB_TCPROW_EX and friends are not available in system headers
106 * and are mapped to attribute identical ...OWNER_PID typedefs.
108 typedef MIB_TCPROW_OWNER_PID _MIB_TCPROW_EX;
109 typedef MIB_TCPTABLE_OWNER_PID MIB_TCPTABLE_EX;
110 typedef PMIB_TCPTABLE_OWNER_PID PMIB_TCPTABLE_EX;
111 typedef DWORD (WINAPI *ProcAllocateAndGetTcpExtTableFromStack)(PMIB_TCPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
112 static ProcAllocateAndGetTcpExtTableFromStack lpfnAllocateAndGetTcpExTableFromStack = NULL;
115 * AllocateAndGetTcpExTableFromStack() is undocumented and not exported,
116 * but is the only way to do this in older XP versions.
117 * @return true if the procedures could be loaded
120 load_ex_ip_helper_procedures(void)
122 HMODULE hModule = LoadLibrary ("iphlpapi.dll");
125 _dbus_verbose ("could not load iphlpapi.dll\n");
129 lpfnAllocateAndGetTcpExTableFromStack = (ProcAllocateAndGetTcpExtTableFromStack)GetProcAddress (hModule, "AllocateAndGetTcpExTableFromStack");
130 if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
132 _dbus_verbose ("could not find function AllocateAndGetTcpExTableFromStack in iphlpapi.dll\n");
139 * get pid from localhost tcp connection using peer_port
140 * This function is available on WinXP >= SP3
141 * @param peer_port peers tcp port
142 * @return process id or 0 if connection has not been found
145 get_pid_from_extended_tcp_table(int peer_port)
148 DWORD errorCode, size = 0, i;
149 MIB_TCPTABLE_OWNER_PID *tcp_table;
152 GetExtendedTcpTable (NULL, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) == ERROR_INSUFFICIENT_BUFFER)
154 tcp_table = (MIB_TCPTABLE_OWNER_PID *) dbus_malloc (size);
155 if (tcp_table == NULL)
157 _dbus_verbose ("Error allocating memory\n");
163 _dbus_win_warn_win_error ("unexpected error returned from GetExtendedTcpTable", errorCode);
167 if ((errorCode = GetExtendedTcpTable (tcp_table, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) != NO_ERROR)
169 _dbus_verbose ("Error fetching tcp table %d\n", (int)errorCode);
170 dbus_free (tcp_table);
175 for (i = 0; i < tcp_table->dwNumEntries; i++)
177 MIB_TCPROW_OWNER_PID *p = &tcp_table->table[i];
178 int local_address = ntohl (p->dwLocalAddr);
179 int local_port = ntohs (p->dwLocalPort);
180 if (p->dwState == MIB_TCP_STATE_ESTAB
181 && local_address == INADDR_LOOPBACK && local_port == peer_port)
182 result = p->dwOwningPid;
185 dbus_free (tcp_table);
186 _dbus_verbose ("got pid %lu\n", result);
191 * get pid from localhost tcp connection using peer_port
192 * This function is available on all WinXP versions, but
193 * not in wine (at least version <= 1.6.0)
194 * @param peer_port peers tcp port
195 * @return process id or 0 if connection has not been found
198 get_pid_from_tcp_ex_table(int peer_port)
202 PMIB_TCPTABLE_EX tcp_table = NULL;
204 if (!load_ex_ip_helper_procedures ())
207 ("Error not been able to load iphelper procedures\n");
211 errorCode = lpfnAllocateAndGetTcpExTableFromStack (&tcp_table, TRUE, GetProcessHeap(), 0, 2);
213 if (errorCode != NO_ERROR)
216 ("Error not been able to call AllocateAndGetTcpExTableFromStack()\n");
221 for (i = 0; i < tcp_table->dwNumEntries; i++)
223 _MIB_TCPROW_EX *p = &tcp_table->table[i];
224 int local_port = ntohs (p->dwLocalPort);
225 int local_address = ntohl (p->dwLocalAddr);
226 if (local_address == INADDR_LOOPBACK && local_port == peer_port)
228 result = p->dwOwningPid;
233 HeapFree (GetProcessHeap(), 0, tcp_table);
234 _dbus_verbose ("got pid %lu\n", result);
239 * @brief return peer process id from tcp handle for localhost connections
240 * @param handle tcp socket descriptor
241 * @return process id or 0 in case the process id could not be fetched
244 _dbus_get_peer_pid_from_tcp_handle (int handle)
246 struct sockaddr_storage addr;
247 socklen_t len = sizeof (addr);
251 dbus_bool_t is_localhost = FALSE;
253 getpeername (handle, (struct sockaddr *) &addr, &len);
255 if (addr.ss_family == AF_INET)
257 struct sockaddr_in *s = (struct sockaddr_in *) &addr;
258 peer_port = ntohs (s->sin_port);
259 is_localhost = (ntohl (s->sin_addr.s_addr) == INADDR_LOOPBACK);
261 else if (addr.ss_family == AF_INET6)
263 _dbus_verbose ("FIXME [61922]: IPV6 support not working on windows\n");
266 struct sockaddr_in6 *s = (struct sockaddr_in6 * )&addr;
267 peer_port = ntohs (s->sin6_port);
268 is_localhost = (memcmp(s->sin6_addr.s6_addr, in6addr_loopback.s6_addr, 16) == 0);
269 _dbus_verbose ("IPV6 %08x %08x\n", s->sin6_addr.s6_addr, in6addr_loopback.s6_addr);
274 _dbus_verbose ("no idea what address family %d is\n", addr.ss_family);
280 _dbus_verbose ("could not fetch process id from remote process\n");
287 ("Error not been able to fetch tcp peer port from connection\n");
291 _dbus_verbose ("trying to get peer's pid\n");
293 result = get_pid_from_extended_tcp_table (peer_port);
296 result = get_pid_from_tcp_ex_table (peer_port);
300 /* Convert GetLastError() to a dbus error. */
302 _dbus_win_error_from_last_error (void)
304 switch (GetLastError())
307 return DBUS_ERROR_FAILED;
309 case ERROR_NO_MORE_FILES:
310 case ERROR_TOO_MANY_OPEN_FILES:
311 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
313 case ERROR_ACCESS_DENIED:
314 case ERROR_CANNOT_MAKE:
315 return DBUS_ERROR_ACCESS_DENIED;
317 case ERROR_NOT_ENOUGH_MEMORY:
318 return DBUS_ERROR_NO_MEMORY;
320 case ERROR_FILE_EXISTS:
321 return DBUS_ERROR_FILE_EXISTS;
323 case ERROR_FILE_NOT_FOUND:
324 case ERROR_PATH_NOT_FOUND:
325 return DBUS_ERROR_FILE_NOT_FOUND;
328 return DBUS_ERROR_FAILED;
333 _dbus_win_error_string (int error_number)
337 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
338 FORMAT_MESSAGE_IGNORE_INSERTS |
339 FORMAT_MESSAGE_FROM_SYSTEM,
340 NULL, error_number, 0,
341 (LPSTR) &msg, 0, NULL);
343 if (msg[strlen (msg) - 1] == '\n')
344 msg[strlen (msg) - 1] = '\0';
345 if (msg[strlen (msg) - 1] == '\r')
346 msg[strlen (msg) - 1] = '\0';
352 _dbus_win_free_error_string (char *string)
363 * Thin wrapper around the read() system call that appends
364 * the data it reads to the DBusString buffer. It appends
365 * up to the given count, and returns the same value
366 * and same errno as read(). The only exception is that
367 * _dbus_read_socket() handles EINTR for you.
368 * _dbus_read_socket() can return ENOMEM, even though
369 * regular UNIX read doesn't.
371 * @param fd the file descriptor to read from
372 * @param buffer the buffer to append data to
373 * @param count the amount of data to read
374 * @returns the number of bytes read or -1
378 _dbus_read_socket (DBusSocket fd,
386 _dbus_assert (count >= 0);
388 start = _dbus_string_get_length (buffer);
390 if (!_dbus_string_lengthen (buffer, count))
392 _dbus_win_set_errno (ENOMEM);
396 data = _dbus_string_get_data_len (buffer, start, count);
400 _dbus_verbose ("recv: count=%d fd=%Iu\n", count, fd.sock);
401 bytes_read = recv (fd.sock, data, count, 0);
403 if (bytes_read == SOCKET_ERROR)
405 DBUS_SOCKET_SET_ERRNO();
406 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno);
410 _dbus_verbose ("recv: = %d\n", bytes_read);
418 /* put length back (note that this doesn't actually realloc anything) */
419 _dbus_string_set_length (buffer, start);
425 /* put length back (doesn't actually realloc) */
426 _dbus_string_set_length (buffer, start + bytes_read);
430 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
438 * Thin wrapper around the write() system call that writes a part of a
439 * DBusString and handles EINTR for you.
441 * @param fd the file descriptor to write
442 * @param buffer the buffer to write data from
443 * @param start the first byte in the buffer to write
444 * @param len the number of bytes to try to write
445 * @returns the number of bytes written or -1 on error
448 _dbus_write_socket (DBusSocket fd,
449 const DBusString *buffer,
456 data = _dbus_string_get_const_data_len (buffer, start, len);
460 _dbus_verbose ("send: len=%d fd=%Iu\n", len, fd.sock);
461 bytes_written = send (fd.sock, data, len, 0);
463 if (bytes_written == SOCKET_ERROR)
465 DBUS_SOCKET_SET_ERRNO();
466 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ());
470 _dbus_verbose ("send: = %d\n", bytes_written);
472 if (bytes_written < 0 && errno == EINTR)
476 if (bytes_written > 0)
477 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
480 return bytes_written;
485 * Closes a file descriptor.
487 * @param fd the file descriptor
488 * @param error error object
489 * @returns #FALSE if error set
492 _dbus_close_socket (DBusSocket fd,
495 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
498 if (closesocket (fd.sock) == SOCKET_ERROR)
500 DBUS_SOCKET_SET_ERRNO ();
505 dbus_set_error (error, _dbus_error_from_errno (errno),
506 "Could not close socket: socket=%Iu, , %s",
507 fd.sock, _dbus_strerror_from_errno ());
510 _dbus_verbose ("_dbus_close_socket: socket=%Iu, \n", fd.sock);
516 * Sets the file descriptor to be close
517 * on exec. Should be called for all file
518 * descriptors in D-Bus code.
520 * @param handle the Windows HANDLE (a SOCKET is also OK)
523 _dbus_win_handle_set_close_on_exec (HANDLE handle)
525 if ( !SetHandleInformation( (HANDLE) handle,
526 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE,
527 0 /*disable both flags*/ ) )
529 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError());
534 * Sets a file descriptor to be nonblocking.
536 * @param handle the file descriptor.
537 * @param error address of error location.
538 * @returns #TRUE on success.
541 _dbus_set_socket_nonblocking (DBusSocket handle,
546 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
548 if (ioctlsocket (handle.sock, FIONBIO, &one) == SOCKET_ERROR)
550 DBUS_SOCKET_SET_ERRNO ();
551 dbus_set_error (error, _dbus_error_from_errno (errno),
552 "Failed to set socket %Iu to nonblocking: %s",
553 handle.sock, _dbus_strerror_from_errno ());
562 * Like _dbus_write() but will use writev() if possible
563 * to write both buffers in sequence. The return value
564 * is the number of bytes written in the first buffer,
565 * plus the number written in the second. If the first
566 * buffer is written successfully and an error occurs
567 * writing the second, the number of bytes in the first
568 * is returned (i.e. the error is ignored), on systems that
569 * don't have writev. Handles EINTR for you.
570 * The second buffer may be #NULL.
572 * @param fd the file descriptor
573 * @param buffer1 first buffer
574 * @param start1 first byte to write in first buffer
575 * @param len1 number of bytes to write from first buffer
576 * @param buffer2 second buffer, or #NULL
577 * @param start2 first byte to write in second buffer
578 * @param len2 number of bytes to write in second buffer
579 * @returns total bytes written from both buffers, or -1 on error
582 _dbus_write_socket_two (DBusSocket fd,
583 const DBusString *buffer1,
586 const DBusString *buffer2,
596 _dbus_assert (buffer1 != NULL);
597 _dbus_assert (start1 >= 0);
598 _dbus_assert (start2 >= 0);
599 _dbus_assert (len1 >= 0);
600 _dbus_assert (len2 >= 0);
603 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
606 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
614 vectors[0].buf = (char*) data1;
615 vectors[0].len = len1;
616 vectors[1].buf = (char*) data2;
617 vectors[1].len = len2;
621 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%Iu\n", len1, len2, fd.sock);
622 rc = WSASend (fd.sock,
630 if (rc == SOCKET_ERROR)
632 DBUS_SOCKET_SET_ERRNO ();
633 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ());
637 _dbus_verbose ("WSASend: = %ld\n", bytes_written);
639 if (bytes_written < 0 && errno == EINTR)
642 return bytes_written;
648 * Opens the client side of a Windows named pipe. The connection D-BUS
649 * file descriptor index is returned. It is set up as nonblocking.
651 * @param path the path to named pipe socket
652 * @param error return location for error code
653 * @returns connection D-BUS file descriptor or -1 on error
656 _dbus_connect_named_pipe (const char *path,
659 _dbus_assert_not_reached ("not implemented");
665 * @returns #FALSE if no memory
668 _dbus_win_startup_winsock (void)
670 /* Straight from MSDN, deuglified */
672 /* Protected by _DBUS_LOCK_sysdeps */
673 static dbus_bool_t beenhere = FALSE;
675 WORD wVersionRequested;
679 if (!_DBUS_LOCK (sysdeps))
685 wVersionRequested = MAKEWORD (2, 0);
687 err = WSAStartup (wVersionRequested, &wsaData);
690 _dbus_assert_not_reached ("Could not initialize WinSock");
694 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL
695 * supports versions greater than 2.0 in addition to 2.0, it will
696 * still return 2.0 in wVersion since that is the version we
699 if (LOBYTE (wsaData.wVersion) != 2 ||
700 HIBYTE (wsaData.wVersion) != 0)
702 _dbus_assert_not_reached ("No usable WinSock found");
709 _DBUS_UNLOCK (sysdeps);
721 /************************************************************************
725 ************************************************************************/
728 * Measure the message length without terminating nul
730 int _dbus_printf_string_upper_bound (const char *format,
733 /* MSVCRT's vsnprintf semantics are a bit different */
739 bufsize = sizeof (buf);
740 DBUS_VA_COPY (args_copy, args);
741 len = _vsnprintf (buf, bufsize - 1, format, args_copy);
744 while (len == -1) /* try again */
750 p = malloc (bufsize);
755 DBUS_VA_COPY (args_copy, args);
756 len = _vsnprintf (p, bufsize - 1, format, args_copy);
766 * Returns the UTF-16 form of a UTF-8 string. The result should be
767 * freed with dbus_free() when no longer needed.
769 * @param str the UTF-8 string
770 * @param error return location for error code
773 _dbus_win_utf8_to_utf16 (const char *str,
780 _dbus_string_init_const (&s, str);
782 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s)))
784 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8");
788 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
792 _dbus_win_set_error_from_win_error (error, GetLastError ());
796 retval = dbus_new (wchar_t, n);
800 _DBUS_SET_OOM (error);
804 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n)
807 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency");
815 * Returns the UTF-8 form of a UTF-16 string. The result should be
816 * freed with dbus_free() when no longer needed.
818 * @param str the UTF-16 string
819 * @param error return location for error code
822 _dbus_win_utf16_to_utf8 (const wchar_t *str,
828 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
832 _dbus_win_set_error_from_win_error (error, GetLastError ());
836 retval = dbus_malloc (n);
840 _DBUS_SET_OOM (error);
844 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n)
847 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency");
859 /************************************************************************
862 ************************************************************************/
865 _dbus_win_account_to_sid (const wchar_t *waccount,
869 dbus_bool_t retval = FALSE;
870 DWORD sid_length, wdomain_length;
878 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length,
879 NULL, &wdomain_length, &use) &&
880 GetLastError () != ERROR_INSUFFICIENT_BUFFER)
882 _dbus_win_set_error_from_win_error (error, GetLastError ());
886 *ppsid = dbus_malloc (sid_length);
889 _DBUS_SET_OOM (error);
893 wdomain = dbus_new (wchar_t, wdomain_length);
896 _DBUS_SET_OOM (error);
900 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length,
901 wdomain, &wdomain_length, &use))
903 _dbus_win_set_error_from_win_error (error, GetLastError ());
907 if (!IsValidSid ((PSID) *ppsid))
909 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID");
927 /** @} end of sysdeps-win */
931 * The only reason this is separate from _dbus_getpid() is to allow it
932 * on Windows for logging but not for other purposes.
934 * @returns process ID to put in log messages
937 _dbus_pid_for_log (void)
939 return _dbus_getpid ();
944 static BOOL is_winxp_sp3_or_lower()
946 OSVERSIONINFOEX osvi;
947 DWORDLONG dwlConditionMask = 0;
948 int op=VER_LESS_EQUAL;
950 // Initialize the OSVERSIONINFOEX structure.
952 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
953 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
954 osvi.dwMajorVersion = 5;
955 osvi.dwMinorVersion = 1;
956 osvi.wServicePackMajor = 3;
957 osvi.wServicePackMinor = 0;
959 // Initialize the condition mask.
961 VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, op );
962 VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, op );
963 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, op );
964 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMINOR, op );
968 return VerifyVersionInfo(
970 VER_MAJORVERSION | VER_MINORVERSION |
971 VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
976 * @param sid points to sid buffer, need to be freed with LocalFree()
977 * @param process_id the process id for which the sid should be returned (use 0 for current process)
978 * @returns process sid
981 _dbus_getsid(char **sid, dbus_pid_t process_id)
983 HANDLE process_token = INVALID_HANDLE_VALUE;
984 TOKEN_USER *token_user = NULL;
989 HANDLE process_handle;
991 process_handle = GetCurrentProcess();
992 else if (is_winxp_sp3_or_lower())
993 process_handle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, process_id);
995 process_handle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
997 if (!OpenProcessToken (process_handle, TOKEN_QUERY, &process_token))
999 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ());
1002 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n)
1003 && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
1004 || (token_user = alloca (n)) == NULL
1005 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n))
1007 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ());
1010 psid = token_user->User.Sid;
1011 if (!IsValidSid (psid))
1013 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1016 if (!ConvertSidToStringSidA (psid, sid))
1018 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1025 CloseHandle (process_handle);
1026 if (process_token != INVALID_HANDLE_VALUE)
1027 CloseHandle (process_token);
1029 _dbus_verbose("_dbus_getsid() got '%s' and returns %d\n", *sid, retval);
1034 /************************************************************************
1038 ************************************************************************/
1041 * Creates pair of connect sockets (as in socketpair()).
1042 * Sets both ends of the pair nonblocking.
1044 * Marks both file descriptors as close-on-exec
1046 * @param fd1 return location for one end
1047 * @param fd2 return location for the other end
1048 * @param blocking #TRUE if pair should be blocking
1049 * @param error error return
1050 * @returns #FALSE on failure (if error is set)
1053 _dbus_socketpair (DBusSocket *fd1,
1055 dbus_bool_t blocking,
1058 SOCKET temp, socket1 = -1, socket2 = -1;
1059 struct sockaddr_in saddr;
1063 if (!_dbus_win_startup_winsock ())
1065 _DBUS_SET_OOM (error);
1069 temp = socket (AF_INET, SOCK_STREAM, 0);
1070 if (temp == INVALID_SOCKET)
1072 DBUS_SOCKET_SET_ERRNO ();
1077 saddr.sin_family = AF_INET;
1079 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1081 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR)
1083 DBUS_SOCKET_SET_ERRNO ();
1087 if (listen (temp, 1) == SOCKET_ERROR)
1089 DBUS_SOCKET_SET_ERRNO ();
1093 len = sizeof (saddr);
1094 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR)
1096 DBUS_SOCKET_SET_ERRNO ();
1100 socket1 = socket (AF_INET, SOCK_STREAM, 0);
1101 if (socket1 == INVALID_SOCKET)
1103 DBUS_SOCKET_SET_ERRNO ();
1107 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR)
1109 DBUS_SOCKET_SET_ERRNO ();
1113 socket2 = accept (temp, (struct sockaddr *) &saddr, &len);
1114 if (socket2 == INVALID_SOCKET)
1116 DBUS_SOCKET_SET_ERRNO ();
1123 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR)
1125 DBUS_SOCKET_SET_ERRNO ();
1130 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR)
1132 DBUS_SOCKET_SET_ERRNO ();
1137 fd1->sock = socket1;
1138 fd2->sock = socket2;
1140 _dbus_verbose ("full-duplex pipe %Iu:%Iu <-> %Iu:%Iu\n",
1141 fd1->sock, socket1, fd2->sock, socket2);
1148 closesocket (socket2);
1150 closesocket (socket1);
1154 dbus_set_error (error, _dbus_error_from_errno (errno),
1155 "Could not setup socket pair: %s",
1156 _dbus_strerror_from_errno ());
1162 * Wrapper for poll().
1164 * @param fds the file descriptors to poll
1165 * @param n_fds number of descriptors in the array
1166 * @param timeout_milliseconds timeout or -1 for infinite
1167 * @returns numbers of fds with revents, or <0 on error
1170 _dbus_poll (DBusPollFD *fds,
1172 int timeout_milliseconds)
1174 #define USE_CHRIS_IMPL 0
1178 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1179 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1187 #define DBUS_STACK_WSAEVENTS 256
1188 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS];
1189 WSAEVENT *pEvents = NULL;
1190 if (n_fds > DBUS_STACK_WSAEVENTS)
1191 pEvents = calloc(sizeof(WSAEVENT), n_fds);
1193 pEvents = eventsOnStack;
1196 #ifdef DBUS_ENABLE_VERBOSE_MODE
1198 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds);
1199 for (i = 0; i < n_fds; i++)
1201 DBusPollFD *fdp = &fds[i];
1204 if (fdp->events & _DBUS_POLLIN)
1205 msgp += sprintf (msgp, "R:%Iu ", fdp->fd.sock);
1207 if (fdp->events & _DBUS_POLLOUT)
1208 msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
1210 msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
1212 // FIXME: more robust code for long msg
1213 // create on heap when msg[] becomes too small
1214 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1216 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1220 msgp += sprintf (msgp, "\n");
1221 _dbus_verbose ("%s",msg);
1223 for (i = 0; i < n_fds; i++)
1225 DBusPollFD *fdp = &fds[i];
1227 long lNetworkEvents = FD_OOB;
1229 ev = WSACreateEvent();
1231 if (fdp->events & _DBUS_POLLIN)
1232 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE;
1234 if (fdp->events & _DBUS_POLLOUT)
1235 lNetworkEvents |= FD_WRITE | FD_CONNECT;
1237 WSAEventSelect(fdp->fd.sock, ev, lNetworkEvents);
1243 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE);
1245 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1247 DBUS_SOCKET_SET_ERRNO ();
1248 if (errno != WSAEWOULDBLOCK)
1249 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ());
1252 else if (ready == WSA_WAIT_TIMEOUT)
1254 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n");
1257 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds))
1260 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready);
1262 for (i = 0; i < n_fds; i++)
1264 DBusPollFD *fdp = &fds[i];
1265 WSANETWORKEVENTS ne;
1269 WSAEnumNetworkEvents(fdp->fd.sock, pEvents[i], &ne);
1271 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1272 fdp->revents |= _DBUS_POLLIN;
1274 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1275 fdp->revents |= _DBUS_POLLOUT;
1277 if (ne.lNetworkEvents & (FD_OOB))
1278 fdp->revents |= _DBUS_POLLERR;
1280 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1281 msgp += sprintf (msgp, "R:%Iu ", fdp->fd.sock);
1283 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1284 msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
1286 if (ne.lNetworkEvents & (FD_OOB))
1287 msgp += sprintf (msgp, "E:%Iu ", fdp->fd.sock);
1289 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
1291 if(ne.lNetworkEvents)
1294 WSAEventSelect(fdp->fd.sock, pEvents[i], 0);
1297 msgp += sprintf (msgp, "\n");
1298 _dbus_verbose ("%s",msg);
1302 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!");
1306 for(i = 0; i < n_fds; i++)
1308 WSACloseEvent(pEvents[i]);
1311 if (n_fds > DBUS_STACK_WSAEVENTS)
1316 #else /* USE_CHRIS_IMPL */
1318 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1319 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1322 fd_set read_set, write_set, err_set;
1328 FD_ZERO (&read_set);
1329 FD_ZERO (&write_set);
1333 #ifdef DBUS_ENABLE_VERBOSE_MODE
1335 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds);
1336 for (i = 0; i < n_fds; i++)
1338 DBusPollFD *fdp = &fds[i];
1341 if (fdp->events & _DBUS_POLLIN)
1342 msgp += sprintf (msgp, "R:%Iu ", fdp->fd.sock);
1344 if (fdp->events & _DBUS_POLLOUT)
1345 msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
1347 msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
1349 // FIXME: more robust code for long msg
1350 // create on heap when msg[] becomes too small
1351 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1353 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1357 msgp += sprintf (msgp, "\n");
1358 _dbus_verbose ("%s",msg);
1360 for (i = 0; i < n_fds; i++)
1362 DBusPollFD *fdp = &fds[i];
1364 if (fdp->events & _DBUS_POLLIN)
1365 FD_SET (fdp->fd.sock, &read_set);
1367 if (fdp->events & _DBUS_POLLOUT)
1368 FD_SET (fdp->fd.sock, &write_set);
1370 FD_SET (fdp->fd.sock, &err_set);
1372 max_fd = MAX (max_fd, fdp->fd.sock);
1375 // Avoid random lockups with send(), for lack of a better solution so far
1376 tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000;
1377 tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000;
1379 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1381 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1383 DBUS_SOCKET_SET_ERRNO ();
1384 if (errno != WSAEWOULDBLOCK)
1385 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ());
1387 else if (ready == 0)
1388 _dbus_verbose ("select: = 0\n");
1392 #ifdef DBUS_ENABLE_VERBOSE_MODE
1394 msgp += sprintf (msgp, "select: = %d:\n\t", ready);
1396 for (i = 0; i < n_fds; i++)
1398 DBusPollFD *fdp = &fds[i];
1400 if (FD_ISSET (fdp->fd.sock, &read_set))
1401 msgp += sprintf (msgp, "R:%Iu ", fdp->fd.sock);
1403 if (FD_ISSET (fdp->fd.sock, &write_set))
1404 msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
1406 if (FD_ISSET (fdp->fd.sock, &err_set))
1407 msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
1409 msgp += sprintf (msgp, "\n");
1410 _dbus_verbose ("%s",msg);
1413 for (i = 0; i < n_fds; i++)
1415 DBusPollFD *fdp = &fds[i];
1419 if (FD_ISSET (fdp->fd.sock, &read_set))
1420 fdp->revents |= _DBUS_POLLIN;
1422 if (FD_ISSET (fdp->fd.sock, &write_set))
1423 fdp->revents |= _DBUS_POLLOUT;
1425 if (FD_ISSET (fdp->fd.sock, &err_set))
1426 fdp->revents |= _DBUS_POLLERR;
1430 #endif /* USE_CHRIS_IMPL */
1436 /******************************************************************************
1438 Original CVS version of dbus-sysdeps.c
1440 ******************************************************************************/
1441 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
1442 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation)
1444 * Copyright (C) 2002, 2003 Red Hat, Inc.
1445 * Copyright (C) 2003 CodeFactory AB
1446 * Copyright (C) 2005 Novell, Inc.
1448 * Licensed under the Academic Free License version 2.1
1450 * This program is free software; you can redistribute it and/or modify
1451 * it under the terms of the GNU General Public License as published by
1452 * the Free Software Foundation; either version 2 of the License, or
1453 * (at your option) any later version.
1455 * This program is distributed in the hope that it will be useful,
1456 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1457 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1458 * GNU General Public License for more details.
1460 * You should have received a copy of the GNU General Public License
1461 * along with this program; if not, write to the Free Software
1462 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1468 * Exit the process, returning the given value.
1470 * @param code the exit code
1473 _dbus_exit (int code)
1479 * Creates a socket and connects to a socket at the given host
1480 * and port. The connection fd is returned, and is set up as
1483 * @param host the host name to connect to
1484 * @param port the port to connect to
1485 * @param family the address family to listen on, NULL for all
1486 * @param error return location for error code
1487 * @returns connection file descriptor or -1 on error
1490 _dbus_connect_tcp_socket (const char *host,
1495 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error);
1499 _dbus_connect_tcp_socket_with_nonce (const char *host,
1502 const char *noncefile,
1505 DBusSocket fd = DBUS_SOCKET_INIT;
1507 struct addrinfo hints;
1508 struct addrinfo *ai, *tmp;
1510 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1512 if (!_dbus_win_startup_winsock ())
1514 _DBUS_SET_OOM (error);
1515 return _dbus_socket_get_invalid ();
1521 hints.ai_family = AF_UNSPEC;
1522 else if (!strcmp(family, "ipv4"))
1523 hints.ai_family = AF_INET;
1524 else if (!strcmp(family, "ipv6"))
1525 hints.ai_family = AF_INET6;
1528 dbus_set_error (error,
1529 DBUS_ERROR_INVALID_ARGS,
1530 "Unknown address family %s", family);
1531 return _dbus_socket_get_invalid ();
1533 hints.ai_protocol = IPPROTO_TCP;
1534 hints.ai_socktype = SOCK_STREAM;
1535 #ifdef AI_ADDRCONFIG
1536 hints.ai_flags = AI_ADDRCONFIG;
1541 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1543 dbus_set_error (error,
1544 _dbus_error_from_errno (res),
1545 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1546 host, port, _dbus_strerror(res), res);
1547 return _dbus_socket_get_invalid ();
1553 if ((fd.sock = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1555 DBUS_SOCKET_SET_ERRNO ();
1556 dbus_set_error (error,
1557 _dbus_error_from_errno (errno),
1558 "Failed to open socket: %s",
1559 _dbus_strerror_from_errno ());
1561 return _dbus_socket_get_invalid ();
1563 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1565 if (connect (fd.sock, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1567 DBUS_SOCKET_SET_ERRNO ();
1568 closesocket(fd.sock);
1569 fd.sock = INVALID_SOCKET;
1578 if (!_dbus_socket_is_valid (fd))
1580 dbus_set_error (error,
1581 _dbus_error_from_errno (errno),
1582 "Failed to connect to socket \"%s:%s\" %s",
1583 host, port, _dbus_strerror_from_errno ());
1584 return _dbus_socket_get_invalid ();
1587 if (noncefile != NULL)
1589 DBusString noncefileStr;
1591 if (!_dbus_string_init (&noncefileStr) ||
1592 !_dbus_string_append(&noncefileStr, noncefile))
1594 closesocket (fd.sock);
1595 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1596 return _dbus_socket_get_invalid ();
1599 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1601 _dbus_string_free (&noncefileStr);
1605 closesocket (fd.sock);
1606 return _dbus_socket_get_invalid ();
1610 /* Every SOCKET is also a HANDLE. */
1611 _dbus_win_handle_set_close_on_exec ((HANDLE) fd.sock);
1613 if (!_dbus_set_socket_nonblocking (fd, error))
1615 closesocket (fd.sock);
1616 return _dbus_socket_get_invalid ();
1623 * Creates a socket and binds it to the given path, then listens on
1624 * the socket. The socket is set to be nonblocking. In case of port=0
1625 * a random free port is used and returned in the port parameter.
1626 * If inaddr_any is specified, the hostname is ignored.
1628 * @param host the host name to listen on
1629 * @param port the port to listen on, if zero a free port will be used
1630 * @param family the address family to listen on, NULL for all
1631 * @param retport string to return the actual port listened on
1632 * @param fds_p location to store returned file descriptors
1633 * @param error return location for errors
1634 * @returns the number of listening file descriptors or -1 on error
1638 _dbus_listen_tcp_socket (const char *host,
1641 DBusString *retport,
1645 DBusSocket *listen_fd = NULL;
1646 int nlisten_fd = 0, 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_INET;
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 DBusSocket fd = DBUS_SOCKET_INIT, *newlisten_fd;
1707 if ((fd.sock = 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.sock, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1720 DBUS_SOCKET_SET_ERRNO ();
1721 closesocket (fd.sock);
1722 if (errno == WSAEADDRINUSE)
1724 /* Calling this function with port=0 tries to
1725 * bind the same port twice, so we should
1726 * ignore the second bind.
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 if (listen (fd.sock, 30 /* backlog */) == SOCKET_ERROR)
1739 DBUS_SOCKET_SET_ERRNO ();
1740 dbus_set_error (error, _dbus_error_from_errno (errno),
1741 "Failed to listen on socket \"%s:%s\": %s",
1742 host ? host : "*", port, _dbus_strerror_from_errno ());
1743 closesocket (fd.sock);
1747 newlisten_fd = dbus_realloc(listen_fd, sizeof(DBusSocket)*(nlisten_fd+1));
1750 closesocket (fd.sock);
1751 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1752 "Failed to allocate file handle array");
1755 listen_fd = newlisten_fd;
1756 listen_fd[nlisten_fd] = fd;
1759 if (!_dbus_string_get_length(retport))
1761 /* If the user didn't specify a port, or used 0, then
1762 the kernel chooses a port. After the first address
1763 is bound to, we need to force all remaining addresses
1764 to use the same port */
1765 if (!port || !strcmp(port, "0"))
1767 mysockaddr_gen addr;
1768 socklen_t addrlen = sizeof(addr);
1769 char portbuf[NI_MAXSERV];
1771 if (getsockname(fd.sock, &addr.Address, &addrlen) == SOCKET_ERROR ||
1772 (res = getnameinfo (&addr.Address, addrlen, NULL, 0,
1773 portbuf, sizeof(portbuf),
1774 NI_NUMERICSERV)) != 0)
1776 DBUS_SOCKET_SET_ERRNO ();
1777 dbus_set_error (error, _dbus_error_from_errno (errno),
1778 "Failed to resolve port \"%s:%s\": %s",
1779 host ? host : "*", port, _dbus_strerror_from_errno());
1782 if (!_dbus_string_append(retport, portbuf))
1784 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1788 /* Release current address list & redo lookup */
1789 port = _dbus_string_get_const_data(retport);
1791 goto redo_lookup_with_port;
1795 if (!_dbus_string_append(retport, port))
1797 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1810 _dbus_win_set_errno (WSAEADDRINUSE);
1811 dbus_set_error (error, _dbus_error_from_errno (errno),
1812 "Failed to bind socket \"%s:%s\": %s",
1813 host ? host : "*", port, _dbus_strerror_from_errno ());
1817 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num);
1819 for (i = 0 ; i < nlisten_fd ; i++)
1821 _dbus_win_handle_set_close_on_exec ((HANDLE) listen_fd[i].sock);
1822 if (!_dbus_set_socket_nonblocking (listen_fd[i], error))
1835 for (i = 0 ; i < nlisten_fd ; i++)
1836 closesocket (listen_fd[i].sock);
1837 dbus_free(listen_fd);
1843 * Accepts a connection on a listening socket.
1844 * Handles EINTR for you.
1846 * @param listen_fd the listen file descriptor
1847 * @returns the connection fd of the client, or -1 on error
1850 _dbus_accept (DBusSocket listen_fd)
1852 DBusSocket client_fd;
1855 client_fd.sock = accept (listen_fd.sock, NULL, NULL);
1857 if (!_dbus_socket_is_valid (client_fd))
1859 DBUS_SOCKET_SET_ERRNO ();
1864 _dbus_verbose ("client fd %Iu accepted\n", client_fd.sock);
1873 _dbus_send_credentials_socket (DBusSocket handle,
1876 /* FIXME: for the session bus credentials shouldn't matter (?), but
1877 * for the system bus they are presumably essential. A rough outline
1878 * of a way to implement the credential transfer would be this:
1880 * client waits to *read* a byte.
1882 * server creates a named pipe with a random name, sends a byte
1883 * contining its length, and its name.
1885 * client reads the name, connects to it (using Win32 API).
1887 * server waits for connection to the named pipe, then calls
1888 * ImpersonateNamedPipeClient(), notes its now-current credentials,
1889 * calls RevertToSelf(), closes its handles to the named pipe, and
1890 * is done. (Maybe there is some other way to get the SID of a named
1891 * pipe client without having to use impersonation?)
1893 * client closes its handles and is done.
1895 * Ralf: Why not sending credentials over the given this connection ?
1896 * Using named pipes makes it impossible to be connected from a unix client.
1902 _dbus_string_init_const_len (&buf, "\0", 1);
1904 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 );
1906 if (bytes_written < 0 && errno == EINTR)
1909 if (bytes_written < 0)
1911 dbus_set_error (error, _dbus_error_from_errno (errno),
1912 "Failed to write credentials byte: %s",
1913 _dbus_strerror_from_errno ());
1916 else if (bytes_written == 0)
1918 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
1919 "wrote zero bytes writing credentials byte");
1924 _dbus_assert (bytes_written == 1);
1925 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n");
1932 * Reads a single byte which must be nul (an error occurs otherwise),
1933 * and reads unix credentials if available. Fills in pid/uid/gid with
1934 * -1 if no credentials are available. Return value indicates whether
1935 * a byte was read, not whether we got valid credentials. On some
1936 * systems, such as Linux, reading/writing the byte isn't actually
1937 * required, but we do it anyway just to avoid multiple codepaths.
1939 * Fails if no byte is available, so you must select() first.
1941 * The point of the byte is that on some systems we have to
1942 * use sendmsg()/recvmsg() to transmit credentials.
1944 * @param handle the client file descriptor
1945 * @param credentials struct to fill with credentials of client
1946 * @param error location to store error code
1947 * @returns #TRUE on success
1950 _dbus_read_credentials_socket (DBusSocket handle,
1951 DBusCredentials *credentials,
1961 // could fail due too OOM
1962 if (_dbus_string_init (&buf))
1964 bytes_read = _dbus_read_socket (handle, &buf, 1 );
1967 _dbus_verbose ("got one zero byte from server\n");
1969 _dbus_string_free (&buf);
1972 pid = _dbus_get_peer_pid_from_tcp_handle (handle.sock);
1976 _dbus_credentials_add_pid (credentials, pid);
1978 if (_dbus_getsid (&sid, pid))
1980 if (!_dbus_credentials_add_windows_sid (credentials, sid))
1994 * Checks to make sure the given directory is
1995 * private to the user
1997 * @param dir the name of the directory
1998 * @param error error return
1999 * @returns #FALSE on failure
2002 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error)
2005 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2011 * Appends the given filename to the given directory.
2013 * @todo it might be cute to collapse multiple '/' such as "foo//"
2016 * @param dir the directory name
2017 * @param next_component the filename
2018 * @returns #TRUE on success
2021 _dbus_concat_dir_and_file (DBusString *dir,
2022 const DBusString *next_component)
2024 dbus_bool_t dir_ends_in_slash;
2025 dbus_bool_t file_starts_with_slash;
2027 if (_dbus_string_get_length (dir) == 0 ||
2028 _dbus_string_get_length (next_component) == 0)
2032 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) ||
2033 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1));
2035 file_starts_with_slash =
2036 ('/' == _dbus_string_get_byte (next_component, 0) ||
2037 '\\' == _dbus_string_get_byte (next_component, 0));
2039 if (dir_ends_in_slash && file_starts_with_slash)
2041 _dbus_string_shorten (dir, 1);
2043 else if (!(dir_ends_in_slash || file_starts_with_slash))
2045 if (!_dbus_string_append_byte (dir, '\\'))
2049 return _dbus_string_copy (next_component, 0, dir,
2050 _dbus_string_get_length (dir));
2053 /*---------------- DBusCredentials ----------------------------------*/
2056 * Adds the credentials corresponding to the given username.
2058 * @param credentials credentials to fill in
2059 * @param username the username
2060 * @returns #TRUE if the username existed and we got some credentials
2063 _dbus_credentials_add_from_user (DBusCredentials *credentials,
2064 const DBusString *username)
2066 return _dbus_credentials_add_windows_sid (credentials,
2067 _dbus_string_get_const_data(username));
2071 * Adds the credentials of the current process to the
2072 * passed-in credentials object.
2074 * @param credentials credentials to add to
2075 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added
2079 _dbus_credentials_add_from_current_process (DBusCredentials *credentials)
2081 dbus_bool_t retval = FALSE;
2084 if (!_dbus_getsid(&sid, _dbus_getpid()))
2087 if (!_dbus_credentials_add_pid (credentials, _dbus_getpid()))
2090 if (!_dbus_credentials_add_windows_sid (credentials,sid))
2105 * Append to the string the identity we would like to have when we
2106 * authenticate, on UNIX this is the current process UID and on
2107 * Windows something else, probably a Windows SID string. No escaping
2108 * is required, that is done in dbus-auth.c. The username here
2109 * need not be anything human-readable, it can be the machine-readable
2110 * form i.e. a user id.
2112 * @param str the string to append to
2113 * @returns #FALSE on no memory
2114 * @todo to which class belongs this
2117 _dbus_append_user_from_current_process (DBusString *str)
2119 dbus_bool_t retval = FALSE;
2122 if (!_dbus_getsid(&sid, _dbus_getpid()))
2125 retval = _dbus_string_append (str,sid);
2132 * Gets our process ID
2133 * @returns process ID
2138 return GetCurrentProcessId ();
2141 /** Gets our Unix UID
2142 * @returns on Windows, just DBUS_UID_UNSET
2147 return DBUS_UID_UNSET;
2150 /** nanoseconds in a second */
2151 #define NANOSECONDS_PER_SECOND 1000000000
2152 /** microseconds in a second */
2153 #define MICROSECONDS_PER_SECOND 1000000
2154 /** milliseconds in a second */
2155 #define MILLISECONDS_PER_SECOND 1000
2156 /** nanoseconds in a millisecond */
2157 #define NANOSECONDS_PER_MILLISECOND 1000000
2158 /** microseconds in a millisecond */
2159 #define MICROSECONDS_PER_MILLISECOND 1000
2162 * Sleeps the given number of milliseconds.
2163 * @param milliseconds number of milliseconds
2166 _dbus_sleep_milliseconds (int milliseconds)
2168 Sleep (milliseconds);
2173 * Get current time, as in gettimeofday(). Never uses the monotonic
2176 * @param tv_sec return location for number of seconds
2177 * @param tv_usec return location for number of microseconds
2180 _dbus_get_real_time (long *tv_sec,
2184 dbus_uint64_t time64;
2186 GetSystemTimeAsFileTime (&ft);
2188 memcpy (&time64, &ft, sizeof (time64));
2190 /* Convert from 100s of nanoseconds since 1601-01-01
2191 * to Unix epoch. Yes, this is Y2038 unsafe.
2193 time64 -= DBUS_INT64_CONSTANT (116444736000000000);
2197 *tv_sec = time64 / 1000000;
2200 *tv_usec = time64 % 1000000;
2204 * Get current time, as in gettimeofday(). Use the monotonic clock if
2205 * available, to avoid problems when the system time changes.
2207 * @param tv_sec return location for number of seconds
2208 * @param tv_usec return location for number of microseconds
2211 _dbus_get_monotonic_time (long *tv_sec,
2214 /* no implementation yet, fall back to wall-clock time */
2215 _dbus_get_real_time (tv_sec, tv_usec);
2219 * signal (SIGPIPE, SIG_IGN);
2222 _dbus_disable_sigpipe (void)
2227 * Creates a directory; succeeds if the directory
2228 * is created or already existed.
2230 * @param filename directory filename
2231 * @param error initialized error object
2232 * @returns #TRUE on success
2235 _dbus_create_directory (const DBusString *filename,
2238 const char *filename_c;
2240 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2242 filename_c = _dbus_string_get_const_data (filename);
2244 if (!CreateDirectoryA (filename_c, NULL))
2246 if (GetLastError () == ERROR_ALREADY_EXISTS)
2249 dbus_set_error (error, DBUS_ERROR_FAILED,
2250 "Failed to create directory %s: %s\n",
2251 filename_c, _dbus_strerror_from_errno ());
2260 * Generates the given number of random bytes,
2261 * using the best mechanism we can come up with.
2263 * @param str the string
2264 * @param n_bytes the number of random bytes to append to string
2265 * @param error location to store reason for failure
2266 * @returns #TRUE on success
2269 _dbus_generate_random_bytes (DBusString *str,
2277 old_len = _dbus_string_get_length (str);
2279 if (!_dbus_string_lengthen (str, n_bytes))
2281 _DBUS_SET_OOM (error);
2285 p = _dbus_string_get_udata_len (str, old_len, n_bytes);
2287 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
2289 _DBUS_SET_OOM (error);
2293 if (!CryptGenRandom (hprov, n_bytes, p))
2295 _DBUS_SET_OOM (error);
2296 CryptReleaseContext (hprov, 0);
2300 CryptReleaseContext (hprov, 0);
2306 * Gets the temporary files directory by inspecting the environment variables
2307 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned
2309 * @returns location of temp directory, or #NULL if no memory for locking
2312 _dbus_get_tmpdir(void)
2314 /* Protected by _DBUS_LOCK_sysdeps */
2315 static const char* tmpdir = NULL;
2316 static char buf[1000];
2318 if (!_DBUS_LOCK (sysdeps))
2323 unsigned char *last_slash;
2324 unsigned char *p = (unsigned char *)buf;
2326 if (!GetTempPathA (sizeof (buf), buf))
2328 _dbus_warn ("GetTempPath failed\n");
2332 /* Drop terminating backslash or slash */
2333 last_slash = _mbsrchr (p, '\\');
2334 if (last_slash > p && last_slash[1] == '\0')
2335 last_slash[0] = '\0';
2336 last_slash = _mbsrchr (p, '/');
2337 if (last_slash > p && last_slash[1] == '\0')
2338 last_slash[0] = '\0';
2343 _DBUS_UNLOCK (sysdeps);
2345 _dbus_assert(tmpdir != NULL);
2352 * Deletes the given file.
2354 * @param filename the filename
2355 * @param error error location
2357 * @returns #TRUE if unlink() succeeded
2360 _dbus_delete_file (const DBusString *filename,
2363 const char *filename_c;
2365 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2367 filename_c = _dbus_string_get_const_data (filename);
2369 if (DeleteFileA (filename_c) == 0)
2371 dbus_set_error (error, DBUS_ERROR_FAILED,
2372 "Failed to delete file %s: %s\n",
2373 filename_c, _dbus_strerror_from_errno ());
2380 #if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_TESTS)
2382 #if defined(_MSC_VER) || defined(DBUS_WINCE)
2392 * Backtrace Generator
2394 * Copyright 2004 Eric Poech
2395 * Copyright 2004 Robert Shearman
2397 * This library is free software; you can redistribute it and/or
2398 * modify it under the terms of the GNU Lesser General Public
2399 * License as published by the Free Software Foundation; either
2400 * version 2.1 of the License, or (at your option) any later version.
2402 * This library is distributed in the hope that it will be useful,
2403 * but WITHOUT ANY WARRANTY; without even the implied warranty of
2404 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2405 * Lesser General Public License for more details.
2407 * You should have received a copy of the GNU Lesser General Public
2408 * License along with this library; if not, write to the Free Software
2409 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2413 #include <imagehlp.h>
2416 #define DPRINTF(fmt, ...) fprintf (stderr, fmt, ##__VA_ARGS__)
2424 static void dump_backtrace_for_thread (HANDLE hThread)
2426 ADDRESS old_address;
2432 SymSetOptions (SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
2433 SymInitialize (GetCurrentProcess (), NULL, TRUE);
2436 /* can't use this function for current thread as GetThreadContext
2437 * doesn't support getting context from current thread */
2438 if (hThread == GetCurrentThread())
2441 DPRINTF ("Backtrace:\n");
2443 _DBUS_ZERO (old_address);
2444 _DBUS_ZERO (context);
2445 context.ContextFlags = CONTEXT_FULL;
2447 SuspendThread (hThread);
2449 if (!GetThreadContext (hThread, &context))
2451 DPRINTF ("Couldn't get thread context (error %ld)\n", GetLastError ());
2452 ResumeThread (hThread);
2459 dwImageType = IMAGE_FILE_MACHINE_I386;
2460 sf.AddrFrame.Offset = context.Ebp;
2461 sf.AddrFrame.Mode = AddrModeFlat;
2462 sf.AddrPC.Offset = context.Eip;
2463 sf.AddrPC.Mode = AddrModeFlat;
2465 dwImageType = IMAGE_FILE_MACHINE_AMD64;
2466 sf.AddrPC.Offset = context.Rip;
2467 sf.AddrPC.Mode = AddrModeFlat;
2468 sf.AddrFrame.Offset = context.Rsp;
2469 sf.AddrFrame.Mode = AddrModeFlat;
2470 sf.AddrStack.Offset = context.Rsp;
2471 sf.AddrStack.Mode = AddrModeFlat;
2473 dwImageType = IMAGE_FILE_MACHINE_IA64;
2474 sf.AddrPC.Offset = context.StIIP;
2475 sf.AddrPC.Mode = AddrModeFlat;
2476 sf.AddrFrame.Offset = context.IntSp;
2477 sf.AddrFrame.Mode = AddrModeFlat;
2478 sf.AddrBStore.Offset= context.RsBSP;
2479 sf.AddrBStore.Mode = AddrModeFlat;
2480 sf.AddrStack.Offset = context.IntSp;
2481 sf.AddrStack.Mode = AddrModeFlat;
2483 # error You need to fill in the STACKFRAME structure for your architecture
2488 <level> <address> <symbol>[+offset] [ '[' <file> ':' <line> ']' ] [ 'in' <module> ]
2490 6 0xf75ade6b wine_switch_to_stack+0x2a [/usr/src/debug/wine-snapshot/libs/wine/port.c:59] in libwine.so.1
2492 while (StackWalk (dwImageType, GetCurrentProcess (),
2493 hThread, &sf, &context, NULL, SymFunctionTableAccess,
2494 SymGetModuleBase, NULL))
2496 char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(char)];
2497 PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
2498 DWORD64 displacement;
2500 DWORD dwDisplacement;
2501 IMAGEHLP_MODULE moduleInfo;
2504 on Wine64 version 1.7.54, we get an infinite number of stack entries
2505 pointing to the same stack frame (_start+0x29 in <wine-loader>)
2506 see bug https://bugs.winehq.org/show_bug.cgi?id=39606
2509 if (old_address.Offset == sf.AddrPC.Offset)
2515 pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
2516 pSymbol->MaxNameLen = MAX_SYM_NAME;
2518 if (SymFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &displacement, pSymbol))
2521 DPRINTF ("%3d %s+0x%I64x", i++, pSymbol->Name, displacement);
2523 DPRINTF ("%3d %s", i++, pSymbol->Name);
2526 DPRINTF ("%3d 0x%lx", i++, sf.AddrPC.Offset);
2528 line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
2529 if (SymGetLineFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &dwDisplacement, &line))
2531 DPRINTF (" [%s:%ld]", line.FileName, line.LineNumber);
2534 moduleInfo.SizeOfStruct = sizeof(moduleInfo);
2535 if (SymGetModuleInfo (GetCurrentProcess (), sf.AddrPC.Offset, &moduleInfo))
2537 DPRINTF (" in %s", moduleInfo.ModuleName);
2540 old_address = sf.AddrPC;
2542 ResumeThread (hThread);
2545 static DWORD WINAPI dump_thread_proc (LPVOID lpParameter)
2547 dump_backtrace_for_thread ((HANDLE) lpParameter);
2551 /* cannot get valid context from current thread, so we have to execute
2552 * backtrace from another thread */
2553 static void dump_backtrace ()
2555 HANDLE hCurrentThread;
2558 DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
2559 GetCurrentProcess (), &hCurrentThread,
2560 0, FALSE, DUPLICATE_SAME_ACCESS);
2561 hThread = CreateThread (NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
2563 WaitForSingleObject (hThread, INFINITE);
2564 CloseHandle (hThread);
2565 CloseHandle (hCurrentThread);
2568 #endif /* asserts or tests enabled */
2571 void _dbus_print_backtrace (void)
2576 void _dbus_print_backtrace (void)
2578 _dbus_verbose (" D-Bus not compiled with backtrace support\n");
2582 static dbus_uint32_t fromAscii(char ascii)
2584 if(ascii >= '0' && ascii <= '9')
2586 if(ascii >= 'A' && ascii <= 'F')
2587 return ascii - 'A' + 10;
2588 if(ascii >= 'a' && ascii <= 'f')
2589 return ascii - 'a' + 10;
2593 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
2594 dbus_bool_t create_if_not_found,
2601 HW_PROFILE_INFOA info;
2602 char *lpc = &info.szHwProfileGuid[0];
2605 // the hw-profile guid lives long enough
2606 if(!GetCurrentHwProfileA(&info))
2608 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME
2612 // Form: {12340001-4980-1920-6788-123456789012}
2615 u = ((fromAscii(lpc[0]) << 0) |
2616 (fromAscii(lpc[1]) << 4) |
2617 (fromAscii(lpc[2]) << 8) |
2618 (fromAscii(lpc[3]) << 12) |
2619 (fromAscii(lpc[4]) << 16) |
2620 (fromAscii(lpc[5]) << 20) |
2621 (fromAscii(lpc[6]) << 24) |
2622 (fromAscii(lpc[7]) << 28));
2623 machine_id->as_uint32s[0] = u;
2627 u = ((fromAscii(lpc[0]) << 0) |
2628 (fromAscii(lpc[1]) << 4) |
2629 (fromAscii(lpc[2]) << 8) |
2630 (fromAscii(lpc[3]) << 12) |
2631 (fromAscii(lpc[5]) << 16) |
2632 (fromAscii(lpc[6]) << 20) |
2633 (fromAscii(lpc[7]) << 24) |
2634 (fromAscii(lpc[8]) << 28));
2635 machine_id->as_uint32s[1] = u;
2639 u = ((fromAscii(lpc[0]) << 0) |
2640 (fromAscii(lpc[1]) << 4) |
2641 (fromAscii(lpc[2]) << 8) |
2642 (fromAscii(lpc[3]) << 12) |
2643 (fromAscii(lpc[5]) << 16) |
2644 (fromAscii(lpc[6]) << 20) |
2645 (fromAscii(lpc[7]) << 24) |
2646 (fromAscii(lpc[8]) << 28));
2647 machine_id->as_uint32s[2] = u;
2651 u = ((fromAscii(lpc[0]) << 0) |
2652 (fromAscii(lpc[1]) << 4) |
2653 (fromAscii(lpc[2]) << 8) |
2654 (fromAscii(lpc[3]) << 12) |
2655 (fromAscii(lpc[4]) << 16) |
2656 (fromAscii(lpc[5]) << 20) |
2657 (fromAscii(lpc[6]) << 24) |
2658 (fromAscii(lpc[7]) << 28));
2659 machine_id->as_uint32s[3] = u;
2665 HANDLE _dbus_global_lock (const char *mutexname)
2670 mutex = CreateMutexA( NULL, FALSE, mutexname );
2676 gotMutex = WaitForSingleObject( mutex, INFINITE );
2679 case WAIT_ABANDONED:
2680 ReleaseMutex (mutex);
2681 CloseHandle (mutex);
2692 void _dbus_global_unlock (HANDLE mutex)
2694 ReleaseMutex (mutex);
2695 CloseHandle (mutex);
2698 // for proper cleanup in dbus-daemon
2699 static HANDLE hDBusDaemonMutex = NULL;
2700 static HANDLE hDBusSharedMem = NULL;
2701 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2702 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex";
2703 // sync _dbus_get_autolaunch_address
2704 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex";
2705 // mutex to determine if dbus-daemon is already started (per user)
2706 static const char *cDBusDaemonMutex = "DBusDaemonMutex";
2707 // named shm for dbus adress info (per user)
2708 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo";
2711 _dbus_get_install_root_as_hash(DBusString *out)
2713 DBusString install_path;
2715 _dbus_string_init(&install_path);
2717 if (!_dbus_get_install_root (&install_path) ||
2718 _dbus_string_get_length (&install_path) == 0)
2721 _dbus_string_init(out);
2722 _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path));
2724 if (!_dbus_sha_compute (&install_path, out))
2731 _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope)
2733 _dbus_string_init(out);
2734 _dbus_string_append(out,basestring);
2740 else if (strcmp(scope,"*install-path") == 0
2741 // for 1.3 compatibility
2742 || strcmp(scope,"install-path") == 0)
2745 if (!_dbus_get_install_root_as_hash(&temp))
2747 _dbus_string_free(out);
2750 _dbus_string_append(out,"-");
2751 _dbus_string_append(out,_dbus_string_get_const_data(&temp));
2752 _dbus_string_free(&temp);
2754 else if (strcmp(scope,"*user") == 0)
2756 _dbus_string_append(out,"-");
2757 if (!_dbus_append_user_from_current_process(out))
2759 _dbus_string_free(out);
2763 else if (strlen(scope) > 0)
2765 _dbus_string_append(out,"-");
2766 _dbus_string_append(out,scope);
2773 _dbus_get_shm_name (DBusString *out,const char *scope)
2775 return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope);
2779 _dbus_get_mutex_name (DBusString *out,const char *scope)
2781 return _dbus_get_address_string (out,cDBusDaemonMutex,scope);
2785 _dbus_daemon_is_session_bus_address_published (const char *scope)
2788 DBusString mutex_name;
2790 if (!_dbus_get_mutex_name(&mutex_name,scope))
2792 _dbus_string_free( &mutex_name );
2796 if (hDBusDaemonMutex)
2799 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2800 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2802 // we use CreateMutex instead of OpenMutex because of possible race conditions,
2803 // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx
2804 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2806 /* The client uses mutex ownership to detect a running server, so the server should do so too.
2807 Fortunally the client deletes the mutex in the lock protected area, so checking presence
2810 _dbus_global_unlock( lock );
2812 _dbus_string_free( &mutex_name );
2814 if (hDBusDaemonMutex == NULL)
2816 if (GetLastError() == ERROR_ALREADY_EXISTS)
2818 CloseHandle(hDBusDaemonMutex);
2819 hDBusDaemonMutex = NULL;
2822 // mutex wasn't created before, so return false.
2823 // We leave the mutex name allocated for later reusage
2824 // in _dbus_daemon_publish_session_bus_address.
2829 _dbus_daemon_publish_session_bus_address (const char* address, const char *scope)
2832 char *shared_addr = NULL;
2833 DBusString shm_name;
2834 DBusString mutex_name;
2837 _dbus_assert (address);
2839 if (!_dbus_get_mutex_name(&mutex_name,scope))
2841 _dbus_string_free( &mutex_name );
2845 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2846 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2848 if (!hDBusDaemonMutex)
2850 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2852 _dbus_string_free( &mutex_name );
2854 // acquire the mutex
2855 if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0)
2857 _dbus_global_unlock( lock );
2858 CloseHandle( hDBusDaemonMutex );
2862 if (!_dbus_get_shm_name(&shm_name,scope))
2864 _dbus_string_free( &shm_name );
2865 _dbus_global_unlock( lock );
2870 len = strlen (address) + 1;
2872 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2873 len >> 32, len & 0xffffffffu,
2874 _dbus_string_get_const_data(&shm_name) );
2875 _dbus_assert( hDBusSharedMem );
2877 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 );
2879 _dbus_assert (shared_addr);
2881 strcpy( shared_addr, address);
2884 UnmapViewOfFile( shared_addr );
2886 _dbus_global_unlock( lock );
2887 _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) );
2889 _dbus_string_free( &shm_name );
2894 _dbus_daemon_unpublish_session_bus_address (void)
2898 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2899 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2901 CloseHandle( hDBusSharedMem );
2903 hDBusSharedMem = NULL;
2905 ReleaseMutex( hDBusDaemonMutex );
2907 CloseHandle( hDBusDaemonMutex );
2909 hDBusDaemonMutex = NULL;
2911 _dbus_global_unlock( lock );
2915 _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name)
2923 // we know that dbus-daemon is available, so we wait until shm is available
2924 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name));
2925 if( sharedMem == 0 )
2927 if ( sharedMem != 0)
2931 if( sharedMem == 0 )
2934 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 );
2939 _dbus_string_init( address );
2941 _dbus_string_append( address, shared_addr );
2944 UnmapViewOfFile( shared_addr );
2946 CloseHandle( sharedMem );
2952 _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope)
2956 DBusString mutex_name;
2957 dbus_bool_t bRet = TRUE;
2959 if (!_dbus_get_mutex_name(&mutex_name,scope))
2961 _dbus_string_free( &mutex_name );
2965 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2966 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2969 daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2970 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT)
2972 ReleaseMutex (daemon);
2973 CloseHandle (daemon);
2975 _dbus_global_unlock( lock );
2976 _dbus_string_free( &mutex_name );
2981 bRet = _dbus_get_autolaunch_shm( address, shm_name );
2984 CloseHandle ( daemon );
2986 _dbus_global_unlock( lock );
2987 _dbus_string_free( &mutex_name );
2993 _dbus_get_autolaunch_address (const char *scope, DBusString *address,
2998 PROCESS_INFORMATION pi;
2999 dbus_bool_t retval = FALSE;
3001 char dbus_exe_path[MAX_PATH];
3002 char dbus_args[MAX_PATH * 2];
3003 const char * daemon_name = DBUS_DAEMON_NAME ".exe";
3004 DBusString shm_name;
3006 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3008 if (!_dbus_get_shm_name(&shm_name,scope))
3010 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name");
3014 mutex = _dbus_global_lock ( cDBusAutolaunchMutex );
3016 if (_dbus_daemon_already_runs(address,&shm_name,scope))
3018 _dbus_verbose( "found running dbus daemon for scope '%s' at %s\n",
3019 scope ? scope : "", _dbus_string_get_const_data (&shm_name) );
3024 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3026 // Look in directory containing dbus shared library
3028 char dbus_module_path[MAX_PATH];
3031 _dbus_verbose( "did not found dbus daemon executable on default search path, "
3032 "trying path where dbus shared library is located");
3034 hmod = _dbus_win_get_dll_hmodule();
3035 rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path));
3038 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name");
3044 char *ext_idx = strrchr(dbus_module_path, '\\');
3047 if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3049 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable");
3051 printf ("please add the path to %s to your PATH environment variable\n", daemon_name);
3052 printf ("or start the daemon manually\n\n");
3055 _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path);
3061 ZeroMemory( &si, sizeof(si) );
3063 ZeroMemory( &pi, sizeof(pi) );
3065 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session");
3067 // argv[i] = "--config-file=bus\\session.conf";
3068 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args);
3069 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
3071 CloseHandle (pi.hThread);
3072 CloseHandle (pi.hProcess);
3073 retval = _dbus_get_autolaunch_shm( address, &shm_name );
3074 if (retval == FALSE)
3075 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon");
3079 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon");
3085 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3087 _DBUS_ASSERT_ERROR_IS_SET (error);
3089 _dbus_global_unlock (mutex);
3090 _dbus_string_free (&shm_name);
3096 /** Makes the file readable by every user in the system.
3098 * @param filename the filename
3099 * @param error error location
3100 * @returns #TRUE if the file's permissions could be changed.
3103 _dbus_make_file_world_readable(const DBusString *filename,
3111 * Atomically increments an integer
3113 * @param atomic pointer to the integer to increment
3114 * @returns the value before incrementing
3118 _dbus_atomic_inc (DBusAtomic *atomic)
3120 // +/- 1 is needed here!
3121 // no volatile argument with mingw
3122 return InterlockedIncrement (&atomic->value) - 1;
3126 * Atomically decrement an integer
3128 * @param atomic pointer to the integer to decrement
3129 * @returns the value before decrementing
3133 _dbus_atomic_dec (DBusAtomic *atomic)
3135 // +/- 1 is needed here!
3136 // no volatile argument with mingw
3137 return InterlockedDecrement (&atomic->value) + 1;
3141 * Atomically get the value of an integer. It may change at any time
3142 * thereafter, so this is mostly only useful for assertions.
3144 * @param atomic pointer to the integer to get
3145 * @returns the value at this moment
3148 _dbus_atomic_get (DBusAtomic *atomic)
3150 /* In this situation, GLib issues a MemoryBarrier() and then returns
3151 * atomic->value. However, mingw from mingw.org (not to be confused with
3152 * mingw-w64 from mingw-w64.sf.net) does not have MemoryBarrier in its
3153 * headers, so we have to get a memory barrier some other way.
3155 * InterlockedIncrement is older, and is documented on MSDN to be a full
3156 * memory barrier, so let's use that.
3160 InterlockedExchange (&dummy, 1);
3162 return atomic->value;
3166 * Called when the bus daemon is signaled to reload its configuration; any
3167 * caches should be nuked. Of course any caches that need explicit reload
3168 * are probably broken, but c'est la vie.
3173 _dbus_flush_caches (void)
3178 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently
3179 * for Winsock so is abstracted)
3181 * @returns #TRUE if e == EAGAIN or e == EWOULDBLOCK
3184 _dbus_get_is_errno_eagain_or_ewouldblock (int e)
3186 return e == WSAEWOULDBLOCK;
3190 * Fill str with the absolute path of the D-Bus installation, or truncate str
3191 * to zero length if we cannot determine it.
3193 * @param str buffer for installation path
3194 * @returns #FALSE on OOM, #TRUE if not OOM
3197 _dbus_get_install_root (DBusString *str)
3199 /* this is just an initial guess */
3200 DWORD pathLength = MAX_PATH;
3201 unsigned char *lastSlash;
3202 unsigned char *prefix;
3206 /* allocate enough space for our best guess at the length */
3207 if (!_dbus_string_set_length (str, pathLength))
3209 _dbus_string_set_length (str, 0);
3214 pathLength = GetModuleFileNameA (_dbus_win_get_dll_hmodule (),
3215 _dbus_string_get_data (str), _dbus_string_get_length (str));
3217 if (pathLength == 0 || GetLastError () != 0)
3219 /* failed, but not OOM */
3220 _dbus_string_set_length (str, 0);
3224 /* if the return is strictly less than the buffer size, it has
3225 * not been truncated, so we can continue */
3226 if (pathLength < (DWORD) _dbus_string_get_length (str))
3228 /* reduce the length to match what Windows filled in */
3229 if (!_dbus_string_set_length (str, pathLength))
3231 _dbus_string_set_length (str, 0);
3238 /* else it may have been truncated; try with a larger buffer */
3243 /* the rest of this function works by direct byte manipulation of the
3244 * underlying buffer */
3245 prefix = _dbus_string_get_udata (str);
3247 lastSlash = _mbsrchr (prefix, '\\');
3248 if (lastSlash == NULL) {
3249 /* failed, but not OOM */
3250 _dbus_string_set_length (str, 0);
3253 //cut off binary name
3256 //cut possible "\\bin"
3257 //this fails if we are in a double-byte system codepage and the
3258 //folder's name happens to end with the *bytes*
3259 //"\\bin"... (I.e. the second byte of some Han character and then
3260 //the Latin "bin", but that is not likely I think...
3261 if (lastSlash - prefix >= 4 && _mbsnicmp (lastSlash - 4, (const unsigned char *)"\\bin", 4) == 0)
3263 else if (lastSlash - prefix >= 10 && _mbsnicmp (lastSlash - 10, (const unsigned char *)"\\bin\\debug", 10) == 0)
3265 else if (lastSlash - prefix >= 12 && _mbsnicmp (lastSlash - 12, (const unsigned char *)"\\bin\\release", 12) == 0)
3268 /* fix up the length to match the byte-manipulation */
3269 _dbus_string_set_length (str, strlen ((char *) prefix));
3274 /* See comment in dbus-sysdeps-unix.c */
3276 _dbus_lookup_session_address (dbus_bool_t *supported,
3277 DBusString *address,
3280 /* Probably fill this in with something based on COM? */
3286 * Appends the directory in which a keyring for the given credentials
3287 * should be stored. The credentials should have either a Windows or
3288 * UNIX user in them. The directory should be an absolute path.
3290 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably
3291 * be something else, since the dotfile convention is not normal on Windows.
3293 * @param directory string to append directory to
3294 * @param credentials credentials the directory should be for
3296 * @returns #FALSE on no memory
3299 _dbus_append_keyring_directory_for_credentials (DBusString *directory,
3300 DBusCredentials *credentials)
3304 const char *homepath;
3305 const char *homedrive;
3307 _dbus_assert (credentials != NULL);
3308 _dbus_assert (!_dbus_credentials_are_anonymous (credentials));
3310 if (!_dbus_string_init (&homedir))
3313 homedrive = _dbus_getenv("HOMEDRIVE");
3314 if (homedrive != NULL && *homedrive != '\0')
3316 _dbus_string_append(&homedir,homedrive);
3319 homepath = _dbus_getenv("HOMEPATH");
3320 if (homepath != NULL && *homepath != '\0')
3322 _dbus_string_append(&homedir,homepath);
3325 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3327 const char *override;
3329 override = _dbus_getenv ("DBUS_TEST_HOMEDIR");
3330 if (override != NULL && *override != '\0')
3332 _dbus_string_set_length (&homedir, 0);
3333 if (!_dbus_string_append (&homedir, override))
3336 _dbus_verbose ("Using fake homedir for testing: %s\n",
3337 _dbus_string_get_const_data (&homedir));
3341 /* Not strictly thread-safe, but if we fail at thread-safety here,
3342 * the worst that will happen is some extra warnings. */
3343 static dbus_bool_t already_warned = FALSE;
3344 if (!already_warned)
3346 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3347 already_warned = TRUE;
3354 /* It's not possible to create a .something directory in Windows CE
3355 using the file explorer. */
3356 #define KEYRING_DIR "dbus-keyrings"
3358 #define KEYRING_DIR ".dbus-keyrings"
3361 _dbus_string_init_const (&dotdir, KEYRING_DIR);
3362 if (!_dbus_concat_dir_and_file (&homedir,
3366 if (!_dbus_string_copy (&homedir, 0,
3367 directory, _dbus_string_get_length (directory))) {
3371 _dbus_string_free (&homedir);
3375 _dbus_string_free (&homedir);
3379 /** Checks if a file exists
3381 * @param file full path to the file
3382 * @returns #TRUE if file exists
3385 _dbus_file_exists (const char *file)
3387 DWORD attributes = GetFileAttributesA (file);
3389 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND)
3396 * A wrapper around strerror() because some platforms
3397 * may be lame and not have strerror().
3399 * @param error_number errno.
3400 * @returns error description.
3403 _dbus_strerror (int error_number)
3411 switch (error_number)
3414 return "Interrupted function call";
3416 return "Permission denied";
3418 return "Bad address";
3420 return "Invalid argument";
3422 return "Too many open files";
3423 case WSAEWOULDBLOCK:
3424 return "Resource temporarily unavailable";
3425 case WSAEINPROGRESS:
3426 return "Operation now in progress";
3428 return "Operation already in progress";
3430 return "Socket operation on nonsocket";
3431 case WSAEDESTADDRREQ:
3432 return "Destination address required";
3434 return "Message too long";
3436 return "Protocol wrong type for socket";
3437 case WSAENOPROTOOPT:
3438 return "Bad protocol option";
3439 case WSAEPROTONOSUPPORT:
3440 return "Protocol not supported";
3441 case WSAESOCKTNOSUPPORT:
3442 return "Socket type not supported";
3444 return "Operation not supported";
3445 case WSAEPFNOSUPPORT:
3446 return "Protocol family not supported";
3447 case WSAEAFNOSUPPORT:
3448 return "Address family not supported by protocol family";
3450 return "Address already in use";
3451 case WSAEADDRNOTAVAIL:
3452 return "Cannot assign requested address";
3454 return "Network is down";
3455 case WSAENETUNREACH:
3456 return "Network is unreachable";
3458 return "Network dropped connection on reset";
3459 case WSAECONNABORTED:
3460 return "Software caused connection abort";
3462 return "Connection reset by peer";
3464 return "No buffer space available";
3466 return "Socket is already connected";
3468 return "Socket is not connected";
3470 return "Cannot send after socket shutdown";
3472 return "Connection timed out";
3473 case WSAECONNREFUSED:
3474 return "Connection refused";
3476 return "Host is down";
3477 case WSAEHOSTUNREACH:
3478 return "No route to host";
3480 return "Too many processes";
3482 return "Graceful shutdown in progress";
3483 case WSATYPE_NOT_FOUND:
3484 return "Class type not found";
3485 case WSAHOST_NOT_FOUND:
3486 return "Host not found";
3488 return "Nonauthoritative host not found";
3489 case WSANO_RECOVERY:
3490 return "This is a nonrecoverable error";
3492 return "Valid name, no data record of requested type";
3493 case WSA_INVALID_HANDLE:
3494 return "Specified event object handle is invalid";
3495 case WSA_INVALID_PARAMETER:
3496 return "One or more parameters are invalid";
3497 case WSA_IO_INCOMPLETE:
3498 return "Overlapped I/O event object not in signaled state";
3499 case WSA_IO_PENDING:
3500 return "Overlapped operations will complete later";
3501 case WSA_NOT_ENOUGH_MEMORY:
3502 return "Insufficient memory available";
3503 case WSA_OPERATION_ABORTED:
3504 return "Overlapped operation aborted";
3505 #ifdef WSAINVALIDPROCTABLE
3507 case WSAINVALIDPROCTABLE:
3508 return "Invalid procedure table from service provider";
3510 #ifdef WSAINVALIDPROVIDER
3512 case WSAINVALIDPROVIDER:
3513 return "Invalid service provider version number";
3515 #ifdef WSAPROVIDERFAILEDINIT
3517 case WSAPROVIDERFAILEDINIT:
3518 return "Unable to initialize a service provider";
3521 case WSASYSCALLFAILURE:
3522 return "System call failure";
3524 msg = strerror (error_number);
3533 * Assigns an error name and message corresponding to a Win32 error
3534 * code to a DBusError. Does nothing if error is #NULL.
3536 * @param error the error.
3537 * @param code the Win32 error code
3540 _dbus_win_set_error_from_win_error (DBusError *error,
3545 /* As we want the English message, use the A API */
3546 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
3547 FORMAT_MESSAGE_IGNORE_INSERTS |
3548 FORMAT_MESSAGE_FROM_SYSTEM,
3549 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US),
3550 (LPSTR) &msg, 0, NULL);
3553 dbus_set_error (error, "win32.error", "%s", msg);
3557 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
3561 _dbus_win_warn_win_error (const char *message,
3566 dbus_error_init (&error);
3567 _dbus_win_set_error_from_win_error (&error, code);
3568 _dbus_warn ("%s: %s\n", message, error.message);
3569 dbus_error_free (&error);
3573 * Removes a directory; Directory must be empty
3575 * @param filename directory filename
3576 * @param error initialized error object
3577 * @returns #TRUE on success
3580 _dbus_delete_directory (const DBusString *filename,
3583 const char *filename_c;
3585 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3587 filename_c = _dbus_string_get_const_data (filename);
3589 if (RemoveDirectoryA (filename_c) == 0)
3591 char *emsg = _dbus_win_error_string (GetLastError ());
3592 dbus_set_error (error, _dbus_win_error_from_last_error (),
3593 "Failed to remove directory %s: %s",
3595 _dbus_win_free_error_string (emsg);
3603 * Checks whether the filename is an absolute path
3605 * @param filename the filename
3606 * @returns #TRUE if an absolute path
3609 _dbus_path_is_absolute (const DBusString *filename)
3611 if (_dbus_string_get_length (filename) > 0)
3612 return _dbus_string_get_byte (filename, 1) == ':'
3613 || _dbus_string_get_byte (filename, 0) == '\\'
3614 || _dbus_string_get_byte (filename, 0) == '/';
3620 _dbus_check_setuid (void)
3626 _dbus_save_socket_errno (void)
3632 _dbus_restore_socket_errno (int saved_errno)
3634 _dbus_win_set_errno (saved_errno);
3637 /** @} end of sysdeps-win */
3638 /* tests in dbus-sysdeps-util.c */