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);
73 #include <sys/types.h>
76 #ifdef HAVE_WS2TCPIP_H
77 /* getaddrinfo for Windows CE (and Windows). */
85 #ifndef PROCESS_QUERY_LIMITED_INFORMATION
86 /* MinGW32 < 4 does not define this value in its headers */
87 #define PROCESS_QUERY_LIMITED_INFORMATION (0x1000)
90 typedef int socklen_t;
94 _dbus_win_set_errno (int err)
103 static BOOL is_winxp_sp3_or_lower();
106 * _MIB_TCPROW_EX and friends are not available in system headers
107 * and are mapped to attribute identical ...OWNER_PID typedefs.
109 typedef MIB_TCPROW_OWNER_PID _MIB_TCPROW_EX;
110 typedef MIB_TCPTABLE_OWNER_PID MIB_TCPTABLE_EX;
111 typedef PMIB_TCPTABLE_OWNER_PID PMIB_TCPTABLE_EX;
112 typedef DWORD (WINAPI *ProcAllocateAndGetTcpExtTableFromStack)(PMIB_TCPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
113 static ProcAllocateAndGetTcpExtTableFromStack lpfnAllocateAndGetTcpExTableFromStack = NULL;
116 * AllocateAndGetTcpExTableFromStack() is undocumented and not exported,
117 * but is the only way to do this in older XP versions.
118 * @return true if the procedures could be loaded
121 load_ex_ip_helper_procedures(void)
123 HMODULE hModule = LoadLibrary ("iphlpapi.dll");
126 _dbus_verbose ("could not load iphlpapi.dll\n");
130 lpfnAllocateAndGetTcpExTableFromStack = (ProcAllocateAndGetTcpExtTableFromStack)GetProcAddress (hModule, "AllocateAndGetTcpExTableFromStack");
131 if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
133 _dbus_verbose ("could not find function AllocateAndGetTcpExTableFromStack in iphlpapi.dll\n");
140 * get pid from localhost tcp connection using peer_port
141 * This function is available on WinXP >= SP3
142 * @param peer_port peers tcp port
143 * @return process id or 0 if connection has not been found
146 get_pid_from_extended_tcp_table(int peer_port)
149 DWORD errorCode, size, i;
150 MIB_TCPTABLE_OWNER_PID *tcp_table;
153 GetExtendedTcpTable (NULL, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) == ERROR_INSUFFICIENT_BUFFER)
155 tcp_table = (MIB_TCPTABLE_OWNER_PID *) dbus_malloc (size);
156 if (tcp_table == NULL)
158 _dbus_verbose ("Error allocating memory\n");
164 _dbus_win_warn_win_error ("unexpected error returned from GetExtendedTcpTable", errorCode);
168 if ((errorCode = GetExtendedTcpTable (tcp_table, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) != NO_ERROR)
170 _dbus_verbose ("Error fetching tcp table %d\n", (int)errorCode);
171 dbus_free (tcp_table);
176 for (i = 0; i < tcp_table->dwNumEntries; i++)
178 MIB_TCPROW_OWNER_PID *p = &tcp_table->table[i];
179 int local_address = ntohl (p->dwLocalAddr);
180 int local_port = ntohs (p->dwLocalPort);
181 if (p->dwState == MIB_TCP_STATE_ESTAB
182 && local_address == INADDR_LOOPBACK && local_port == peer_port)
183 result = p->dwOwningPid;
186 dbus_free (tcp_table);
187 _dbus_verbose ("got pid %lu\n", result);
192 * get pid from localhost tcp connection using peer_port
193 * This function is available on all WinXP versions, but
194 * not in wine (at least version <= 1.6.0)
195 * @param peer_port peers tcp port
196 * @return process id or 0 if connection has not been found
199 get_pid_from_tcp_ex_table(int peer_port)
203 PMIB_TCPTABLE_EX tcp_table = NULL;
205 if (!load_ex_ip_helper_procedures ())
208 ("Error not been able to load iphelper procedures\n");
212 errorCode = lpfnAllocateAndGetTcpExTableFromStack (&tcp_table, TRUE, GetProcessHeap(), 0, 2);
214 if (errorCode != NO_ERROR)
217 ("Error not been able to call AllocateAndGetTcpExTableFromStack()\n");
222 for (i = 0; i < tcp_table->dwNumEntries; i++)
224 _MIB_TCPROW_EX *p = &tcp_table->table[i];
225 int local_port = ntohs (p->dwLocalPort);
226 int local_address = ntohl (p->dwLocalAddr);
227 if (local_address == INADDR_LOOPBACK && local_port == peer_port)
229 result = p->dwOwningPid;
234 HeapFree (GetProcessHeap(), 0, tcp_table);
235 _dbus_verbose ("got pid %lu\n", result);
240 * @brief return peer process id from tcp handle for localhost connections
241 * @param handle tcp socket descriptor
242 * @return process id or 0 in case the process id could not be fetched
245 _dbus_get_peer_pid_from_tcp_handle (int handle)
247 struct sockaddr_storage addr;
248 socklen_t len = sizeof (addr);
252 dbus_bool_t is_localhost = FALSE;
254 getpeername (handle, (struct sockaddr *) &addr, &len);
256 if (addr.ss_family == AF_INET)
258 struct sockaddr_in *s = (struct sockaddr_in *) &addr;
259 peer_port = ntohs (s->sin_port);
260 is_localhost = (ntohl (s->sin_addr.s_addr) == INADDR_LOOPBACK);
262 else if (addr.ss_family == AF_INET6)
264 _dbus_verbose ("FIXME [61922]: IPV6 support not working on windows\n");
267 struct sockaddr_in6 *s = (struct sockaddr_in6 * )&addr;
268 peer_port = ntohs (s->sin6_port);
269 is_localhost = (memcmp(s->sin6_addr.s6_addr, in6addr_loopback.s6_addr, 16) == 0);
270 _dbus_verbose ("IPV6 %08x %08x\n", s->sin6_addr.s6_addr, in6addr_loopback.s6_addr);
275 _dbus_verbose ("no idea what address family %d is\n", addr.ss_family);
281 _dbus_verbose ("could not fetch process id from remote process\n");
288 ("Error not been able to fetch tcp peer port from connection\n");
292 _dbus_verbose ("trying to get peers pid");
294 result = get_pid_from_extended_tcp_table (peer_port);
297 result = get_pid_from_tcp_ex_table (peer_port);
301 /* Convert GetLastError() to a dbus error. */
303 _dbus_win_error_from_last_error (void)
305 switch (GetLastError())
308 return DBUS_ERROR_FAILED;
310 case ERROR_NO_MORE_FILES:
311 case ERROR_TOO_MANY_OPEN_FILES:
312 return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
314 case ERROR_ACCESS_DENIED:
315 case ERROR_CANNOT_MAKE:
316 return DBUS_ERROR_ACCESS_DENIED;
318 case ERROR_NOT_ENOUGH_MEMORY:
319 return DBUS_ERROR_NO_MEMORY;
321 case ERROR_FILE_EXISTS:
322 return DBUS_ERROR_FILE_EXISTS;
324 case ERROR_FILE_NOT_FOUND:
325 case ERROR_PATH_NOT_FOUND:
326 return DBUS_ERROR_FILE_NOT_FOUND;
329 return DBUS_ERROR_FAILED;
334 _dbus_win_error_string (int error_number)
338 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
339 FORMAT_MESSAGE_IGNORE_INSERTS |
340 FORMAT_MESSAGE_FROM_SYSTEM,
341 NULL, error_number, 0,
342 (LPSTR) &msg, 0, NULL);
344 if (msg[strlen (msg) - 1] == '\n')
345 msg[strlen (msg) - 1] = '\0';
346 if (msg[strlen (msg) - 1] == '\r')
347 msg[strlen (msg) - 1] = '\0';
353 _dbus_win_free_error_string (char *string)
364 * Thin wrapper around the read() system call that appends
365 * the data it reads to the DBusString buffer. It appends
366 * up to the given count, and returns the same value
367 * and same errno as read(). The only exception is that
368 * _dbus_read_socket() handles EINTR for you.
369 * _dbus_read_socket() can return ENOMEM, even though
370 * regular UNIX read doesn't.
372 * @param fd the file descriptor to read from
373 * @param buffer the buffer to append data to
374 * @param count the amount of data to read
375 * @returns the number of bytes read or -1
379 _dbus_read_socket (int fd,
387 _dbus_assert (count >= 0);
389 start = _dbus_string_get_length (buffer);
391 if (!_dbus_string_lengthen (buffer, count))
393 _dbus_win_set_errno (ENOMEM);
397 data = _dbus_string_get_data_len (buffer, start, count);
401 _dbus_verbose ("recv: count=%d fd=%d\n", count, fd);
402 bytes_read = recv (fd, data, count, 0);
404 if (bytes_read == SOCKET_ERROR)
406 DBUS_SOCKET_SET_ERRNO();
407 _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno);
411 _dbus_verbose ("recv: = %d\n", bytes_read);
419 /* put length back (note that this doesn't actually realloc anything) */
420 _dbus_string_set_length (buffer, start);
426 /* put length back (doesn't actually realloc) */
427 _dbus_string_set_length (buffer, start + bytes_read);
431 _dbus_verbose_bytes_of_string (buffer, start, bytes_read);
439 * Thin wrapper around the write() system call that writes a part of a
440 * DBusString and handles EINTR for you.
442 * @param fd the file descriptor to write
443 * @param buffer the buffer to write data from
444 * @param start the first byte in the buffer to write
445 * @param len the number of bytes to try to write
446 * @returns the number of bytes written or -1 on error
449 _dbus_write_socket (int fd,
450 const DBusString *buffer,
457 data = _dbus_string_get_const_data_len (buffer, start, len);
461 _dbus_verbose ("send: len=%d fd=%d\n", len, fd);
462 bytes_written = send (fd, data, len, 0);
464 if (bytes_written == SOCKET_ERROR)
466 DBUS_SOCKET_SET_ERRNO();
467 _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ());
471 _dbus_verbose ("send: = %d\n", bytes_written);
473 if (bytes_written < 0 && errno == EINTR)
477 if (bytes_written > 0)
478 _dbus_verbose_bytes_of_string (buffer, start, bytes_written);
481 return bytes_written;
486 * Closes a file descriptor.
488 * @param fd the file descriptor
489 * @param error error object
490 * @returns #FALSE if error set
493 _dbus_close_socket (int fd,
496 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
499 if (closesocket (fd) == SOCKET_ERROR)
501 DBUS_SOCKET_SET_ERRNO ();
506 dbus_set_error (error, _dbus_error_from_errno (errno),
507 "Could not close socket: socket=%d, , %s",
508 fd, _dbus_strerror_from_errno ());
511 _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd);
517 * Sets the file descriptor to be close
518 * on exec. Should be called for all file
519 * descriptors in D-Bus code.
521 * @param handle the Windows HANDLE
524 _dbus_fd_set_close_on_exec (intptr_t handle)
526 if ( !SetHandleInformation( (HANDLE) handle,
527 HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE,
528 0 /*disable both flags*/ ) )
530 _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError());
535 * Sets a file descriptor to be nonblocking.
537 * @param handle the file descriptor.
538 * @param error address of error location.
539 * @returns #TRUE on success.
542 _dbus_set_fd_nonblocking (int handle,
547 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
549 if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR)
551 DBUS_SOCKET_SET_ERRNO ();
552 dbus_set_error (error, _dbus_error_from_errno (errno),
553 "Failed to set socket %d:%d to nonblocking: %s", handle,
554 _dbus_strerror_from_errno ());
563 * Like _dbus_write() but will use writev() if possible
564 * to write both buffers in sequence. The return value
565 * is the number of bytes written in the first buffer,
566 * plus the number written in the second. If the first
567 * buffer is written successfully and an error occurs
568 * writing the second, the number of bytes in the first
569 * is returned (i.e. the error is ignored), on systems that
570 * don't have writev. Handles EINTR for you.
571 * The second buffer may be #NULL.
573 * @param fd the file descriptor
574 * @param buffer1 first buffer
575 * @param start1 first byte to write in first buffer
576 * @param len1 number of bytes to write from first buffer
577 * @param buffer2 second buffer, or #NULL
578 * @param start2 first byte to write in second buffer
579 * @param len2 number of bytes to write in second buffer
580 * @returns total bytes written from both buffers, or -1 on error
583 _dbus_write_socket_two (int fd,
584 const DBusString *buffer1,
587 const DBusString *buffer2,
597 _dbus_assert (buffer1 != NULL);
598 _dbus_assert (start1 >= 0);
599 _dbus_assert (start2 >= 0);
600 _dbus_assert (len1 >= 0);
601 _dbus_assert (len2 >= 0);
604 data1 = _dbus_string_get_const_data_len (buffer1, start1, len1);
607 data2 = _dbus_string_get_const_data_len (buffer2, start2, len2);
615 vectors[0].buf = (char*) data1;
616 vectors[0].len = len1;
617 vectors[1].buf = (char*) data2;
618 vectors[1].len = len2;
622 _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd);
631 if (rc == SOCKET_ERROR)
633 DBUS_SOCKET_SET_ERRNO ();
634 _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ());
638 _dbus_verbose ("WSASend: = %ld\n", bytes_written);
640 if (bytes_written < 0 && errno == EINTR)
643 return bytes_written;
647 _dbus_socket_is_invalid (int fd)
649 return fd == INVALID_SOCKET ? TRUE : FALSE;
655 * Opens the client side of a Windows named pipe. The connection D-BUS
656 * file descriptor index is returned. It is set up as nonblocking.
658 * @param path the path to named pipe socket
659 * @param error return location for error code
660 * @returns connection D-BUS file descriptor or -1 on error
663 _dbus_connect_named_pipe (const char *path,
666 _dbus_assert_not_reached ("not implemented");
672 * @returns #FALSE if no memory
675 _dbus_win_startup_winsock (void)
677 /* Straight from MSDN, deuglified */
679 /* Protected by _DBUS_LOCK_sysdeps */
680 static dbus_bool_t beenhere = FALSE;
682 WORD wVersionRequested;
686 if (!_DBUS_LOCK (sysdeps))
692 wVersionRequested = MAKEWORD (2, 0);
694 err = WSAStartup (wVersionRequested, &wsaData);
697 _dbus_assert_not_reached ("Could not initialize WinSock");
701 /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL
702 * supports versions greater than 2.0 in addition to 2.0, it will
703 * still return 2.0 in wVersion since that is the version we
706 if (LOBYTE (wsaData.wVersion) != 2 ||
707 HIBYTE (wsaData.wVersion) != 0)
709 _dbus_assert_not_reached ("No usable WinSock found");
716 _DBUS_UNLOCK (sysdeps);
728 /************************************************************************
732 ************************************************************************/
735 * Measure the message length without terminating nul
737 int _dbus_printf_string_upper_bound (const char *format,
740 /* MSVCRT's vsnprintf semantics are a bit different */
746 bufsize = sizeof (buf);
747 DBUS_VA_COPY (args_copy, args);
748 len = _vsnprintf (buf, bufsize - 1, format, args_copy);
751 while (len == -1) /* try again */
757 p = malloc (bufsize);
762 DBUS_VA_COPY (args_copy, args);
763 len = _vsnprintf (p, bufsize - 1, format, args_copy);
773 * Returns the UTF-16 form of a UTF-8 string. The result should be
774 * freed with dbus_free() when no longer needed.
776 * @param str the UTF-8 string
777 * @param error return location for error code
780 _dbus_win_utf8_to_utf16 (const char *str,
787 _dbus_string_init_const (&s, str);
789 if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s)))
791 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8");
795 n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
799 _dbus_win_set_error_from_win_error (error, GetLastError ());
803 retval = dbus_new (wchar_t, n);
807 _DBUS_SET_OOM (error);
811 if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n)
814 dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency");
822 * Returns the UTF-8 form of a UTF-16 string. The result should be
823 * freed with dbus_free() when no longer needed.
825 * @param str the UTF-16 string
826 * @param error return location for error code
829 _dbus_win_utf16_to_utf8 (const wchar_t *str,
835 n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
839 _dbus_win_set_error_from_win_error (error, GetLastError ());
843 retval = dbus_malloc (n);
847 _DBUS_SET_OOM (error);
851 if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n)
854 dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency");
866 /************************************************************************
869 ************************************************************************/
872 _dbus_win_account_to_sid (const wchar_t *waccount,
876 dbus_bool_t retval = FALSE;
877 DWORD sid_length, wdomain_length;
885 if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length,
886 NULL, &wdomain_length, &use) &&
887 GetLastError () != ERROR_INSUFFICIENT_BUFFER)
889 _dbus_win_set_error_from_win_error (error, GetLastError ());
893 *ppsid = dbus_malloc (sid_length);
896 _DBUS_SET_OOM (error);
900 wdomain = dbus_new (wchar_t, wdomain_length);
903 _DBUS_SET_OOM (error);
907 if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length,
908 wdomain, &wdomain_length, &use))
910 _dbus_win_set_error_from_win_error (error, GetLastError ());
914 if (!IsValidSid ((PSID) *ppsid))
916 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID");
934 /** @} end of sysdeps-win */
938 * The only reason this is separate from _dbus_getpid() is to allow it
939 * on Windows for logging but not for other purposes.
941 * @returns process ID to put in log messages
944 _dbus_pid_for_log (void)
946 return _dbus_getpid ();
951 static BOOL is_winxp_sp3_or_lower()
953 OSVERSIONINFOEX osvi;
954 DWORDLONG dwlConditionMask = 0;
955 int op=VER_LESS_EQUAL;
957 // Initialize the OSVERSIONINFOEX structure.
959 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
960 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
961 osvi.dwMajorVersion = 5;
962 osvi.dwMinorVersion = 1;
963 osvi.wServicePackMajor = 3;
964 osvi.wServicePackMinor = 0;
966 // Initialize the condition mask.
968 VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, op );
969 VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, op );
970 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, op );
971 VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMINOR, op );
975 return VerifyVersionInfo(
977 VER_MAJORVERSION | VER_MINORVERSION |
978 VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
983 * @param sid points to sid buffer, need to be freed with LocalFree()
984 * @param process_id the process id for which the sid should be returned
985 * @returns process sid
988 _dbus_getsid(char **sid, dbus_pid_t process_id)
990 HANDLE process_token = INVALID_HANDLE_VALUE;
991 TOKEN_USER *token_user = NULL;
996 HANDLE process_handle = OpenProcess(is_winxp_sp3_or_lower() ? PROCESS_QUERY_INFORMATION : PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
998 if (!OpenProcessToken (process_handle, TOKEN_QUERY, &process_token))
1000 _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ());
1003 if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n)
1004 && GetLastError () != ERROR_INSUFFICIENT_BUFFER)
1005 || (token_user = alloca (n)) == NULL
1006 || !GetTokenInformation (process_token, TokenUser, token_user, n, &n))
1008 _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ());
1011 psid = token_user->User.Sid;
1012 if (!IsValidSid (psid))
1014 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1017 if (!ConvertSidToStringSidA (psid, sid))
1019 _dbus_verbose("%s invalid sid\n",__FUNCTION__);
1026 CloseHandle (process_handle);
1027 if (process_token != INVALID_HANDLE_VALUE)
1028 CloseHandle (process_token);
1030 _dbus_verbose("_dbus_getsid() got '%s' and returns %d\n", *sid, retval);
1035 /************************************************************************
1039 ************************************************************************/
1042 * Creates a full-duplex pipe (as in socketpair()).
1043 * Sets both ends of the pipe nonblocking.
1045 * @param fd1 return location for one end
1046 * @param fd2 return location for the other end
1047 * @param blocking #TRUE if pipe should be blocking
1048 * @param error error return
1049 * @returns #FALSE on failure (if error is set)
1052 _dbus_full_duplex_pipe (int *fd1,
1054 dbus_bool_t blocking,
1057 SOCKET temp, socket1 = -1, socket2 = -1;
1058 struct sockaddr_in saddr;
1062 if (!_dbus_win_startup_winsock ())
1064 _DBUS_SET_OOM (error);
1068 temp = socket (AF_INET, SOCK_STREAM, 0);
1069 if (temp == INVALID_SOCKET)
1071 DBUS_SOCKET_SET_ERRNO ();
1076 saddr.sin_family = AF_INET;
1078 saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
1080 if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR)
1082 DBUS_SOCKET_SET_ERRNO ();
1086 if (listen (temp, 1) == SOCKET_ERROR)
1088 DBUS_SOCKET_SET_ERRNO ();
1092 len = sizeof (saddr);
1093 if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR)
1095 DBUS_SOCKET_SET_ERRNO ();
1099 socket1 = socket (AF_INET, SOCK_STREAM, 0);
1100 if (socket1 == INVALID_SOCKET)
1102 DBUS_SOCKET_SET_ERRNO ();
1106 if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR)
1108 DBUS_SOCKET_SET_ERRNO ();
1112 socket2 = accept (temp, (struct sockaddr *) &saddr, &len);
1113 if (socket2 == INVALID_SOCKET)
1115 DBUS_SOCKET_SET_ERRNO ();
1122 if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR)
1124 DBUS_SOCKET_SET_ERRNO ();
1129 if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR)
1131 DBUS_SOCKET_SET_ERRNO ();
1139 _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n",
1140 *fd1, socket1, *fd2, socket2);
1147 closesocket (socket2);
1149 closesocket (socket1);
1153 dbus_set_error (error, _dbus_error_from_errno (errno),
1154 "Could not setup socket pair: %s",
1155 _dbus_strerror_from_errno ());
1161 * Wrapper for poll().
1163 * @param fds the file descriptors to poll
1164 * @param n_fds number of descriptors in the array
1165 * @param timeout_milliseconds timeout or -1 for infinite
1166 * @returns numbers of fds with revents, or <0 on error
1169 _dbus_poll (DBusPollFD *fds,
1171 int timeout_milliseconds)
1173 #define USE_CHRIS_IMPL 0
1177 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1178 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1186 #define DBUS_STACK_WSAEVENTS 256
1187 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS];
1188 WSAEVENT *pEvents = NULL;
1189 if (n_fds > DBUS_STACK_WSAEVENTS)
1190 pEvents = calloc(sizeof(WSAEVENT), n_fds);
1192 pEvents = eventsOnStack;
1195 #ifdef DBUS_ENABLE_VERBOSE_MODE
1197 msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds);
1198 for (i = 0; i < n_fds; i++)
1200 DBusPollFD *fdp = &fds[i];
1203 if (fdp->events & _DBUS_POLLIN)
1204 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1206 if (fdp->events & _DBUS_POLLOUT)
1207 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1209 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1211 // FIXME: more robust code for long msg
1212 // create on heap when msg[] becomes too small
1213 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1215 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1219 msgp += sprintf (msgp, "\n");
1220 _dbus_verbose ("%s",msg);
1222 for (i = 0; i < n_fds; i++)
1224 DBusPollFD *fdp = &fds[i];
1226 long lNetworkEvents = FD_OOB;
1228 ev = WSACreateEvent();
1230 if (fdp->events & _DBUS_POLLIN)
1231 lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE;
1233 if (fdp->events & _DBUS_POLLOUT)
1234 lNetworkEvents |= FD_WRITE | FD_CONNECT;
1236 WSAEventSelect(fdp->fd, ev, lNetworkEvents);
1242 ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE);
1244 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1246 DBUS_SOCKET_SET_ERRNO ();
1247 if (errno != WSAEWOULDBLOCK)
1248 _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ());
1251 else if (ready == WSA_WAIT_TIMEOUT)
1253 _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n");
1256 else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds))
1259 msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready);
1261 for (i = 0; i < n_fds; i++)
1263 DBusPollFD *fdp = &fds[i];
1264 WSANETWORKEVENTS ne;
1268 WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne);
1270 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1271 fdp->revents |= _DBUS_POLLIN;
1273 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1274 fdp->revents |= _DBUS_POLLOUT;
1276 if (ne.lNetworkEvents & (FD_OOB))
1277 fdp->revents |= _DBUS_POLLERR;
1279 if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE))
1280 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1282 if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
1283 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1285 if (ne.lNetworkEvents & (FD_OOB))
1286 msgp += sprintf (msgp, "E:%d ", fdp->fd);
1288 msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
1290 if(ne.lNetworkEvents)
1293 WSAEventSelect(fdp->fd, pEvents[i], 0);
1296 msgp += sprintf (msgp, "\n");
1297 _dbus_verbose ("%s",msg);
1301 _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!");
1305 for(i = 0; i < n_fds; i++)
1307 WSACloseEvent(pEvents[i]);
1310 if (n_fds > DBUS_STACK_WSAEVENTS)
1315 #else /* USE_CHRIS_IMPL */
1317 #define DBUS_POLL_CHAR_BUFFER_SIZE 2000
1318 char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
1321 fd_set read_set, write_set, err_set;
1327 FD_ZERO (&read_set);
1328 FD_ZERO (&write_set);
1332 #ifdef DBUS_ENABLE_VERBOSE_MODE
1334 msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds);
1335 for (i = 0; i < n_fds; i++)
1337 DBusPollFD *fdp = &fds[i];
1340 if (fdp->events & _DBUS_POLLIN)
1341 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1343 if (fdp->events & _DBUS_POLLOUT)
1344 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1346 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1348 // FIXME: more robust code for long msg
1349 // create on heap when msg[] becomes too small
1350 if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE)
1352 _dbus_assert_not_reached ("buffer overflow in _dbus_poll");
1356 msgp += sprintf (msgp, "\n");
1357 _dbus_verbose ("%s",msg);
1359 for (i = 0; i < n_fds; i++)
1361 DBusPollFD *fdp = &fds[i];
1363 if (fdp->events & _DBUS_POLLIN)
1364 FD_SET (fdp->fd, &read_set);
1366 if (fdp->events & _DBUS_POLLOUT)
1367 FD_SET (fdp->fd, &write_set);
1369 FD_SET (fdp->fd, &err_set);
1371 max_fd = MAX (max_fd, fdp->fd);
1374 // Avoid random lockups with send(), for lack of a better solution so far
1375 tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000;
1376 tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000;
1378 ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv);
1380 if (DBUS_SOCKET_API_RETURNS_ERROR (ready))
1382 DBUS_SOCKET_SET_ERRNO ();
1383 if (errno != WSAEWOULDBLOCK)
1384 _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ());
1386 else if (ready == 0)
1387 _dbus_verbose ("select: = 0\n");
1391 #ifdef DBUS_ENABLE_VERBOSE_MODE
1393 msgp += sprintf (msgp, "select: = %d:\n\t", ready);
1395 for (i = 0; i < n_fds; i++)
1397 DBusPollFD *fdp = &fds[i];
1399 if (FD_ISSET (fdp->fd, &read_set))
1400 msgp += sprintf (msgp, "R:%d ", fdp->fd);
1402 if (FD_ISSET (fdp->fd, &write_set))
1403 msgp += sprintf (msgp, "W:%d ", fdp->fd);
1405 if (FD_ISSET (fdp->fd, &err_set))
1406 msgp += sprintf (msgp, "E:%d\n\t", fdp->fd);
1408 msgp += sprintf (msgp, "\n");
1409 _dbus_verbose ("%s",msg);
1412 for (i = 0; i < n_fds; i++)
1414 DBusPollFD *fdp = &fds[i];
1418 if (FD_ISSET (fdp->fd, &read_set))
1419 fdp->revents |= _DBUS_POLLIN;
1421 if (FD_ISSET (fdp->fd, &write_set))
1422 fdp->revents |= _DBUS_POLLOUT;
1424 if (FD_ISSET (fdp->fd, &err_set))
1425 fdp->revents |= _DBUS_POLLERR;
1429 #endif /* USE_CHRIS_IMPL */
1435 /******************************************************************************
1437 Original CVS version of dbus-sysdeps.c
1439 ******************************************************************************/
1440 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
1441 /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation)
1443 * Copyright (C) 2002, 2003 Red Hat, Inc.
1444 * Copyright (C) 2003 CodeFactory AB
1445 * Copyright (C) 2005 Novell, Inc.
1447 * Licensed under the Academic Free License version 2.1
1449 * This program is free software; you can redistribute it and/or modify
1450 * it under the terms of the GNU General Public License as published by
1451 * the Free Software Foundation; either version 2 of the License, or
1452 * (at your option) any later version.
1454 * This program is distributed in the hope that it will be useful,
1455 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1456 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1457 * GNU General Public License for more details.
1459 * You should have received a copy of the GNU General Public License
1460 * along with this program; if not, write to the Free Software
1461 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1467 * Exit the process, returning the given value.
1469 * @param code the exit code
1472 _dbus_exit (int code)
1478 * Creates a socket and connects to a socket at the given host
1479 * and port. The connection fd is returned, and is set up as
1482 * @param host the host name to connect to
1483 * @param port the port to connect to
1484 * @param family the address family to listen on, NULL for all
1485 * @param error return location for error code
1486 * @returns connection file descriptor or -1 on error
1489 _dbus_connect_tcp_socket (const char *host,
1494 return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error);
1498 _dbus_connect_tcp_socket_with_nonce (const char *host,
1501 const char *noncefile,
1505 struct addrinfo hints;
1506 struct addrinfo *ai, *tmp;
1508 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1510 if (!_dbus_win_startup_winsock ())
1512 _DBUS_SET_OOM (error);
1519 hints.ai_family = AF_UNSPEC;
1520 else if (!strcmp(family, "ipv4"))
1521 hints.ai_family = AF_INET;
1522 else if (!strcmp(family, "ipv6"))
1523 hints.ai_family = AF_INET6;
1526 dbus_set_error (error,
1527 DBUS_ERROR_INVALID_ARGS,
1528 "Unknown address family %s", family);
1531 hints.ai_protocol = IPPROTO_TCP;
1532 hints.ai_socktype = SOCK_STREAM;
1533 #ifdef AI_ADDRCONFIG
1534 hints.ai_flags = AI_ADDRCONFIG;
1539 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1541 dbus_set_error (error,
1542 _dbus_error_from_errno (res),
1543 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1544 host, port, _dbus_strerror(res), res);
1551 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1553 DBUS_SOCKET_SET_ERRNO ();
1554 dbus_set_error (error,
1555 _dbus_error_from_errno (errno),
1556 "Failed to open socket: %s",
1557 _dbus_strerror_from_errno ());
1561 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1563 if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1565 DBUS_SOCKET_SET_ERRNO ();
1578 dbus_set_error (error,
1579 _dbus_error_from_errno (errno),
1580 "Failed to connect to socket \"%s:%s\" %s",
1581 host, port, _dbus_strerror_from_errno ());
1585 if (noncefile != NULL)
1587 DBusString noncefileStr;
1589 if (!_dbus_string_init (&noncefileStr) ||
1590 !_dbus_string_append(&noncefileStr, noncefile))
1593 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1597 ret = _dbus_send_nonce (fd, &noncefileStr, error);
1599 _dbus_string_free (&noncefileStr);
1608 _dbus_fd_set_close_on_exec (fd);
1610 if (!_dbus_set_fd_nonblocking (fd, error))
1620 * Creates a socket and binds it to the given path, then listens on
1621 * the socket. The socket is set to be nonblocking. In case of port=0
1622 * a random free port is used and returned in the port parameter.
1623 * If inaddr_any is specified, the hostname is ignored.
1625 * @param host the host name to listen on
1626 * @param port the port to listen on, if zero a free port will be used
1627 * @param family the address family to listen on, NULL for all
1628 * @param retport string to return the actual port listened on
1629 * @param fds_p location to store returned file descriptors
1630 * @param error return location for errors
1631 * @returns the number of listening file descriptors or -1 on error
1635 _dbus_listen_tcp_socket (const char *host,
1638 DBusString *retport,
1642 int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1;
1643 struct addrinfo hints;
1644 struct addrinfo *ai, *tmp;
1646 // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old
1647 //That's required for family == IPv6(which is the default on Vista if family is not given)
1648 //So we use our own union instead of sockaddr_gen:
1651 struct sockaddr Address;
1652 struct sockaddr_in AddressIn;
1653 struct sockaddr_in6 AddressIn6;
1657 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1659 if (!_dbus_win_startup_winsock ())
1661 _DBUS_SET_OOM (error);
1668 hints.ai_family = AF_UNSPEC;
1669 else if (!strcmp(family, "ipv4"))
1670 hints.ai_family = AF_INET;
1671 else if (!strcmp(family, "ipv6"))
1672 hints.ai_family = AF_INET6;
1675 dbus_set_error (error,
1676 DBUS_ERROR_INVALID_ARGS,
1677 "Unknown address family %s", family);
1681 hints.ai_protocol = IPPROTO_TCP;
1682 hints.ai_socktype = SOCK_STREAM;
1683 #ifdef AI_ADDRCONFIG
1684 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
1686 hints.ai_flags = AI_PASSIVE;
1689 redo_lookup_with_port:
1690 if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai)
1692 dbus_set_error (error,
1693 _dbus_error_from_errno (res),
1694 "Failed to lookup host/port: \"%s:%s\": %s (%d)",
1695 host ? host : "*", port, _dbus_strerror(res), res);
1702 int fd = -1, *newlisten_fd;
1703 if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET)
1705 DBUS_SOCKET_SET_ERRNO ();
1706 dbus_set_error (error,
1707 _dbus_error_from_errno (errno),
1708 "Failed to open socket: %s",
1709 _dbus_strerror_from_errno ());
1712 _DBUS_ASSERT_ERROR_IS_CLEAR(error);
1714 if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
1716 DBUS_SOCKET_SET_ERRNO ();
1717 dbus_set_error (error, _dbus_error_from_errno (errno),
1718 "Failed to bind socket \"%s:%s\": %s",
1719 host ? host : "*", port, _dbus_strerror_from_errno ());
1724 if (listen (fd, 30 /* backlog */) == SOCKET_ERROR)
1726 DBUS_SOCKET_SET_ERRNO ();
1727 dbus_set_error (error, _dbus_error_from_errno (errno),
1728 "Failed to listen on socket \"%s:%s\": %s",
1729 host ? host : "*", port, _dbus_strerror_from_errno ());
1734 newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1));
1738 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
1739 "Failed to allocate file handle array");
1742 listen_fd = newlisten_fd;
1743 listen_fd[nlisten_fd] = fd;
1746 if (!_dbus_string_get_length(retport))
1748 /* If the user didn't specify a port, or used 0, then
1749 the kernel chooses a port. After the first address
1750 is bound to, we need to force all remaining addresses
1751 to use the same port */
1752 if (!port || !strcmp(port, "0"))
1754 mysockaddr_gen addr;
1755 socklen_t addrlen = sizeof(addr);
1758 if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR)
1760 DBUS_SOCKET_SET_ERRNO ();
1761 dbus_set_error (error, _dbus_error_from_errno (errno),
1762 "Failed to resolve port \"%s:%s\": %s",
1763 host ? host : "*", port, _dbus_strerror_from_errno());
1766 snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port );
1767 if (!_dbus_string_append(retport, portbuf))
1769 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1773 /* Release current address list & redo lookup */
1774 port = _dbus_string_get_const_data(retport);
1776 goto redo_lookup_with_port;
1780 if (!_dbus_string_append(retport, port))
1782 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1795 _dbus_win_set_errno (WSAEADDRINUSE);
1796 dbus_set_error (error, _dbus_error_from_errno (errno),
1797 "Failed to bind socket \"%s:%s\": %s",
1798 host ? host : "*", port, _dbus_strerror_from_errno ());
1802 sscanf(_dbus_string_get_const_data(retport), "%d", &port_num);
1804 for (i = 0 ; i < nlisten_fd ; i++)
1806 _dbus_fd_set_close_on_exec (listen_fd[i]);
1807 if (!_dbus_set_fd_nonblocking (listen_fd[i], error))
1820 for (i = 0 ; i < nlisten_fd ; i++)
1821 closesocket (listen_fd[i]);
1822 dbus_free(listen_fd);
1828 * Accepts a connection on a listening socket.
1829 * Handles EINTR for you.
1831 * @param listen_fd the listen file descriptor
1832 * @returns the connection fd of the client, or -1 on error
1835 _dbus_accept (int listen_fd)
1840 client_fd = accept (listen_fd, NULL, NULL);
1842 if (DBUS_SOCKET_IS_INVALID (client_fd))
1844 DBUS_SOCKET_SET_ERRNO ();
1849 _dbus_verbose ("client fd %d accepted\n", client_fd);
1858 _dbus_send_credentials_socket (int handle,
1861 /* FIXME: for the session bus credentials shouldn't matter (?), but
1862 * for the system bus they are presumably essential. A rough outline
1863 * of a way to implement the credential transfer would be this:
1865 * client waits to *read* a byte.
1867 * server creates a named pipe with a random name, sends a byte
1868 * contining its length, and its name.
1870 * client reads the name, connects to it (using Win32 API).
1872 * server waits for connection to the named pipe, then calls
1873 * ImpersonateNamedPipeClient(), notes its now-current credentials,
1874 * calls RevertToSelf(), closes its handles to the named pipe, and
1875 * is done. (Maybe there is some other way to get the SID of a named
1876 * pipe client without having to use impersonation?)
1878 * client closes its handles and is done.
1880 * Ralf: Why not sending credentials over the given this connection ?
1881 * Using named pipes makes it impossible to be connected from a unix client.
1887 _dbus_string_init_const_len (&buf, "\0", 1);
1889 bytes_written = _dbus_write_socket (handle, &buf, 0, 1 );
1891 if (bytes_written < 0 && errno == EINTR)
1894 if (bytes_written < 0)
1896 dbus_set_error (error, _dbus_error_from_errno (errno),
1897 "Failed to write credentials byte: %s",
1898 _dbus_strerror_from_errno ());
1901 else if (bytes_written == 0)
1903 dbus_set_error (error, DBUS_ERROR_IO_ERROR,
1904 "wrote zero bytes writing credentials byte");
1909 _dbus_assert (bytes_written == 1);
1910 _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n");
1917 * Reads a single byte which must be nul (an error occurs otherwise),
1918 * and reads unix credentials if available. Fills in pid/uid/gid with
1919 * -1 if no credentials are available. Return value indicates whether
1920 * a byte was read, not whether we got valid credentials. On some
1921 * systems, such as Linux, reading/writing the byte isn't actually
1922 * required, but we do it anyway just to avoid multiple codepaths.
1924 * Fails if no byte is available, so you must select() first.
1926 * The point of the byte is that on some systems we have to
1927 * use sendmsg()/recvmsg() to transmit credentials.
1929 * @param handle the client file descriptor
1930 * @param credentials struct to fill with credentials of client
1931 * @param error location to store error code
1932 * @returns #TRUE on success
1935 _dbus_read_credentials_socket (int handle,
1936 DBusCredentials *credentials,
1946 // could fail due too OOM
1947 if (_dbus_string_init (&buf))
1949 bytes_read = _dbus_read_socket (handle, &buf, 1 );
1952 _dbus_verbose ("got one zero byte from server\n");
1954 _dbus_string_free (&buf);
1957 pid = _dbus_get_peer_pid_from_tcp_handle (handle);
1961 _dbus_credentials_add_pid (credentials, pid);
1963 if (_dbus_getsid (&sid, pid))
1965 if (!_dbus_credentials_add_windows_sid (credentials, sid))
1979 * Checks to make sure the given directory is
1980 * private to the user
1982 * @param dir the name of the directory
1983 * @param error error return
1984 * @returns #FALSE on failure
1987 _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error)
1990 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1996 * Appends the given filename to the given directory.
1998 * @todo it might be cute to collapse multiple '/' such as "foo//"
2001 * @param dir the directory name
2002 * @param next_component the filename
2003 * @returns #TRUE on success
2006 _dbus_concat_dir_and_file (DBusString *dir,
2007 const DBusString *next_component)
2009 dbus_bool_t dir_ends_in_slash;
2010 dbus_bool_t file_starts_with_slash;
2012 if (_dbus_string_get_length (dir) == 0 ||
2013 _dbus_string_get_length (next_component) == 0)
2017 ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) ||
2018 '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1));
2020 file_starts_with_slash =
2021 ('/' == _dbus_string_get_byte (next_component, 0) ||
2022 '\\' == _dbus_string_get_byte (next_component, 0));
2024 if (dir_ends_in_slash && file_starts_with_slash)
2026 _dbus_string_shorten (dir, 1);
2028 else if (!(dir_ends_in_slash || file_starts_with_slash))
2030 if (!_dbus_string_append_byte (dir, '\\'))
2034 return _dbus_string_copy (next_component, 0, dir,
2035 _dbus_string_get_length (dir));
2038 /*---------------- DBusCredentials ----------------------------------*/
2041 * Adds the credentials corresponding to the given username.
2043 * @param credentials credentials to fill in
2044 * @param username the username
2045 * @returns #TRUE if the username existed and we got some credentials
2048 _dbus_credentials_add_from_user (DBusCredentials *credentials,
2049 const DBusString *username)
2051 return _dbus_credentials_add_windows_sid (credentials,
2052 _dbus_string_get_const_data(username));
2056 * Adds the credentials of the current process to the
2057 * passed-in credentials object.
2059 * @param credentials credentials to add to
2060 * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added
2064 _dbus_credentials_add_from_current_process (DBusCredentials *credentials)
2066 dbus_bool_t retval = FALSE;
2069 if (!_dbus_getsid(&sid, _dbus_getpid()))
2072 if (!_dbus_credentials_add_pid (credentials, _dbus_getpid()))
2075 if (!_dbus_credentials_add_windows_sid (credentials,sid))
2090 * Append to the string the identity we would like to have when we
2091 * authenticate, on UNIX this is the current process UID and on
2092 * Windows something else, probably a Windows SID string. No escaping
2093 * is required, that is done in dbus-auth.c. The username here
2094 * need not be anything human-readable, it can be the machine-readable
2095 * form i.e. a user id.
2097 * @param str the string to append to
2098 * @returns #FALSE on no memory
2099 * @todo to which class belongs this
2102 _dbus_append_user_from_current_process (DBusString *str)
2104 dbus_bool_t retval = FALSE;
2107 if (!_dbus_getsid(&sid, _dbus_getpid()))
2110 retval = _dbus_string_append (str,sid);
2117 * Gets our process ID
2118 * @returns process ID
2123 return GetCurrentProcessId ();
2126 /** nanoseconds in a second */
2127 #define NANOSECONDS_PER_SECOND 1000000000
2128 /** microseconds in a second */
2129 #define MICROSECONDS_PER_SECOND 1000000
2130 /** milliseconds in a second */
2131 #define MILLISECONDS_PER_SECOND 1000
2132 /** nanoseconds in a millisecond */
2133 #define NANOSECONDS_PER_MILLISECOND 1000000
2134 /** microseconds in a millisecond */
2135 #define MICROSECONDS_PER_MILLISECOND 1000
2138 * Sleeps the given number of milliseconds.
2139 * @param milliseconds number of milliseconds
2142 _dbus_sleep_milliseconds (int milliseconds)
2144 Sleep (milliseconds);
2149 * Get current time, as in gettimeofday(). Never uses the monotonic
2152 * @param tv_sec return location for number of seconds
2153 * @param tv_usec return location for number of microseconds
2156 _dbus_get_real_time (long *tv_sec,
2160 dbus_uint64_t time64;
2162 GetSystemTimeAsFileTime (&ft);
2164 memcpy (&time64, &ft, sizeof (time64));
2166 /* Convert from 100s of nanoseconds since 1601-01-01
2167 * to Unix epoch. Yes, this is Y2038 unsafe.
2169 time64 -= DBUS_INT64_CONSTANT (116444736000000000);
2173 *tv_sec = time64 / 1000000;
2176 *tv_usec = time64 % 1000000;
2180 * Get current time, as in gettimeofday(). Use the monotonic clock if
2181 * available, to avoid problems when the system time changes.
2183 * @param tv_sec return location for number of seconds
2184 * @param tv_usec return location for number of microseconds
2187 _dbus_get_monotonic_time (long *tv_sec,
2190 /* no implementation yet, fall back to wall-clock time */
2191 _dbus_get_real_time (tv_sec, tv_usec);
2195 * signal (SIGPIPE, SIG_IGN);
2198 _dbus_disable_sigpipe (void)
2203 * Creates a directory; succeeds if the directory
2204 * is created or already existed.
2206 * @param filename directory filename
2207 * @param error initialized error object
2208 * @returns #TRUE on success
2211 _dbus_create_directory (const DBusString *filename,
2214 const char *filename_c;
2216 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2218 filename_c = _dbus_string_get_const_data (filename);
2220 if (!CreateDirectoryA (filename_c, NULL))
2222 if (GetLastError () == ERROR_ALREADY_EXISTS)
2225 dbus_set_error (error, DBUS_ERROR_FAILED,
2226 "Failed to create directory %s: %s\n",
2227 filename_c, _dbus_strerror_from_errno ());
2236 * Generates the given number of random bytes,
2237 * using the best mechanism we can come up with.
2239 * @param str the string
2240 * @param n_bytes the number of random bytes to append to string
2241 * @returns #TRUE on success, #FALSE if no memory
2244 _dbus_generate_random_bytes (DBusString *str,
2251 old_len = _dbus_string_get_length (str);
2253 if (!_dbus_string_lengthen (str, n_bytes))
2256 p = _dbus_string_get_data_len (str, old_len, n_bytes);
2258 if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
2261 if (!CryptGenRandom (hprov, n_bytes, p))
2263 CryptReleaseContext (hprov, 0);
2267 CryptReleaseContext (hprov, 0);
2273 * Gets the temporary files directory by inspecting the environment variables
2274 * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned
2276 * @returns location of temp directory, or #NULL if no memory for locking
2279 _dbus_get_tmpdir(void)
2281 /* Protected by _DBUS_LOCK_sysdeps */
2282 static const char* tmpdir = NULL;
2283 static char buf[1000];
2285 if (!_DBUS_LOCK (sysdeps))
2292 if (!GetTempPathA (sizeof (buf), buf))
2294 _dbus_warn ("GetTempPath failed\n");
2298 /* Drop terminating backslash or slash */
2299 last_slash = _mbsrchr (buf, '\\');
2300 if (last_slash > buf && last_slash[1] == '\0')
2301 last_slash[0] = '\0';
2302 last_slash = _mbsrchr (buf, '/');
2303 if (last_slash > buf && last_slash[1] == '\0')
2304 last_slash[0] = '\0';
2309 _DBUS_UNLOCK (sysdeps);
2311 _dbus_assert(tmpdir != NULL);
2318 * Deletes the given file.
2320 * @param filename the filename
2321 * @param error error location
2323 * @returns #TRUE if unlink() succeeded
2326 _dbus_delete_file (const DBusString *filename,
2329 const char *filename_c;
2331 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
2333 filename_c = _dbus_string_get_const_data (filename);
2335 if (DeleteFileA (filename_c) == 0)
2337 dbus_set_error (error, DBUS_ERROR_FAILED,
2338 "Failed to delete file %s: %s\n",
2339 filename_c, _dbus_strerror_from_errno ());
2346 #if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_TESTS)
2348 #if defined(_MSC_VER) || defined(DBUS_WINCE)
2358 * Backtrace Generator
2360 * Copyright 2004 Eric Poech
2361 * Copyright 2004 Robert Shearman
2363 * This library is free software; you can redistribute it and/or
2364 * modify it under the terms of the GNU Lesser General Public
2365 * License as published by the Free Software Foundation; either
2366 * version 2.1 of the License, or (at your option) any later version.
2368 * This library is distributed in the hope that it will be useful,
2369 * but WITHOUT ANY WARRANTY; without even the implied warranty of
2370 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2371 * Lesser General Public License for more details.
2373 * You should have received a copy of the GNU Lesser General Public
2374 * License along with this library; if not, write to the Free Software
2375 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2379 #include <imagehlp.h>
2382 #define DPRINTF _dbus_warn
2390 //#define MAKE_FUNCPTR(f) static typeof(f) * p##f
2392 //MAKE_FUNCPTR(StackWalk);
2393 //MAKE_FUNCPTR(SymGetModuleBase);
2394 //MAKE_FUNCPTR(SymFunctionTableAccess);
2395 //MAKE_FUNCPTR(SymInitialize);
2396 //MAKE_FUNCPTR(SymGetSymFromAddr);
2397 //MAKE_FUNCPTR(SymGetModuleInfo);
2398 static BOOL (WINAPI *pStackWalk)(
2402 LPSTACKFRAME StackFrame,
2403 PVOID ContextRecord,
2404 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2405 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2406 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2407 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2410 static DWORD64 (WINAPI *pSymGetModuleBase)(
2414 static PVOID (WINAPI *pSymFunctionTableAccess)(
2419 static DWORD (WINAPI *pSymGetModuleBase)(
2423 static PVOID (WINAPI *pSymFunctionTableAccess)(
2428 static BOOL (WINAPI *pSymInitialize)(
2430 PSTR UserSearchPath,
2433 static BOOL (WINAPI *pSymGetSymFromAddr)(
2436 PDWORD Displacement,
2437 PIMAGEHLP_SYMBOL Symbol
2439 static BOOL (WINAPI *pSymGetModuleInfo)(
2442 PIMAGEHLP_MODULE ModuleInfo
2444 static DWORD (WINAPI *pSymSetOptions)(
2449 static BOOL init_backtrace()
2451 HMODULE hmodDbgHelp = LoadLibraryA("dbghelp");
2453 #define GETFUNC(x) \
2454 p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \
2462 // GETFUNC(StackWalk);
2463 // GETFUNC(SymGetModuleBase);
2464 // GETFUNC(SymFunctionTableAccess);
2465 // GETFUNC(SymInitialize);
2466 // GETFUNC(SymGetSymFromAddr);
2467 // GETFUNC(SymGetModuleInfo);
2471 pStackWalk = (BOOL (WINAPI *)(
2475 LPSTACKFRAME StackFrame,
2476 PVOID ContextRecord,
2477 PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
2478 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
2479 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
2480 PTRANSLATE_ADDRESS_ROUTINE TranslateAddress
2481 ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk));
2483 pSymGetModuleBase=(DWORD64 (WINAPI *)(
2486 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2487 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2490 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2492 pSymGetModuleBase=(DWORD (WINAPI *)(
2495 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase));
2496 pSymFunctionTableAccess=(PVOID (WINAPI *)(
2499 ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess));
2501 pSymInitialize = (BOOL (WINAPI *)(
2503 PSTR UserSearchPath,
2505 ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize));
2506 pSymGetSymFromAddr = (BOOL (WINAPI *)(
2509 PDWORD Displacement,
2510 PIMAGEHLP_SYMBOL Symbol
2511 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr));
2512 pSymGetModuleInfo = (BOOL (WINAPI *)(
2515 PIMAGEHLP_MODULE ModuleInfo
2516 ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo));
2517 pSymSetOptions = (DWORD (WINAPI *)(
2519 ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions));
2522 pSymSetOptions(SYMOPT_UNDNAME);
2524 pSymInitialize(GetCurrentProcess(), NULL, TRUE);
2529 static void dump_backtrace_for_thread(HANDLE hThread)
2536 if (!init_backtrace())
2539 /* can't use this function for current thread as GetThreadContext
2540 * doesn't support getting context from current thread */
2541 if (hThread == GetCurrentThread())
2544 DPRINTF("Backtrace:\n");
2546 _DBUS_ZERO(context);
2547 context.ContextFlags = CONTEXT_FULL;
2549 SuspendThread(hThread);
2551 if (!GetThreadContext(hThread, &context))
2553 DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError());
2554 ResumeThread(hThread);
2561 sf.AddrFrame.Offset = context.Ebp;
2562 sf.AddrFrame.Mode = AddrModeFlat;
2563 sf.AddrPC.Offset = context.Eip;
2564 sf.AddrPC.Mode = AddrModeFlat;
2565 dwImageType = IMAGE_FILE_MACHINE_I386;
2567 dwImageType = IMAGE_FILE_MACHINE_AMD64;
2568 sf.AddrPC.Offset = context.Rip;
2569 sf.AddrPC.Mode = AddrModeFlat;
2570 sf.AddrFrame.Offset = context.Rsp;
2571 sf.AddrFrame.Mode = AddrModeFlat;
2572 sf.AddrStack.Offset = context.Rsp;
2573 sf.AddrStack.Mode = AddrModeFlat;
2575 dwImageType = IMAGE_FILE_MACHINE_IA64;
2576 sf.AddrPC.Offset = context.StIIP;
2577 sf.AddrPC.Mode = AddrModeFlat;
2578 sf.AddrFrame.Offset = context.IntSp;
2579 sf.AddrFrame.Mode = AddrModeFlat;
2580 sf.AddrBStore.Offset= context.RsBSP;
2581 sf.AddrBStore.Mode = AddrModeFlat;
2582 sf.AddrStack.Offset = context.IntSp;
2583 sf.AddrStack.Mode = AddrModeFlat;
2585 # error You need to fill in the STACKFRAME structure for your architecture
2588 while (pStackWalk(dwImageType, GetCurrentProcess(),
2589 hThread, &sf, &context, NULL, pSymFunctionTableAccess,
2590 pSymGetModuleBase, NULL))
2593 IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer;
2594 DWORD dwDisplacement;
2596 pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
2597 pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1;
2599 if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset,
2600 &dwDisplacement, pSymbol))
2602 IMAGEHLP_MODULE ModuleInfo;
2603 ModuleInfo.SizeOfStruct = sizeof(ModuleInfo);
2605 if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset,
2607 DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset);
2609 DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName,
2610 sf.AddrPC.Offset - ModuleInfo.BaseOfImage);
2612 else if (dwDisplacement)
2613 DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement);
2615 DPRINTF("4\t%s\n", pSymbol->Name);
2618 ResumeThread(hThread);
2621 static DWORD WINAPI dump_thread_proc(LPVOID lpParameter)
2623 dump_backtrace_for_thread((HANDLE)lpParameter);
2627 /* cannot get valid context from current thread, so we have to execute
2628 * backtrace from another thread */
2629 static void dump_backtrace()
2631 HANDLE hCurrentThread;
2634 DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
2635 GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS);
2636 hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread,
2638 WaitForSingleObject(hThread, INFINITE);
2639 CloseHandle(hThread);
2640 CloseHandle(hCurrentThread);
2643 #endif /* asserts or tests enabled */
2646 void _dbus_print_backtrace(void)
2652 void _dbus_print_backtrace(void)
2654 _dbus_verbose (" D-Bus not compiled with backtrace support\n");
2658 static dbus_uint32_t fromAscii(char ascii)
2660 if(ascii >= '0' && ascii <= '9')
2662 if(ascii >= 'A' && ascii <= 'F')
2663 return ascii - 'A' + 10;
2664 if(ascii >= 'a' && ascii <= 'f')
2665 return ascii - 'a' + 10;
2669 dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id,
2670 dbus_bool_t create_if_not_found,
2677 HW_PROFILE_INFOA info;
2678 char *lpc = &info.szHwProfileGuid[0];
2681 // the hw-profile guid lives long enough
2682 if(!GetCurrentHwProfileA(&info))
2684 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME
2688 // Form: {12340001-4980-1920-6788-123456789012}
2691 u = ((fromAscii(lpc[0]) << 0) |
2692 (fromAscii(lpc[1]) << 4) |
2693 (fromAscii(lpc[2]) << 8) |
2694 (fromAscii(lpc[3]) << 12) |
2695 (fromAscii(lpc[4]) << 16) |
2696 (fromAscii(lpc[5]) << 20) |
2697 (fromAscii(lpc[6]) << 24) |
2698 (fromAscii(lpc[7]) << 28));
2699 machine_id->as_uint32s[0] = u;
2703 u = ((fromAscii(lpc[0]) << 0) |
2704 (fromAscii(lpc[1]) << 4) |
2705 (fromAscii(lpc[2]) << 8) |
2706 (fromAscii(lpc[3]) << 12) |
2707 (fromAscii(lpc[5]) << 16) |
2708 (fromAscii(lpc[6]) << 20) |
2709 (fromAscii(lpc[7]) << 24) |
2710 (fromAscii(lpc[8]) << 28));
2711 machine_id->as_uint32s[1] = u;
2715 u = ((fromAscii(lpc[0]) << 0) |
2716 (fromAscii(lpc[1]) << 4) |
2717 (fromAscii(lpc[2]) << 8) |
2718 (fromAscii(lpc[3]) << 12) |
2719 (fromAscii(lpc[5]) << 16) |
2720 (fromAscii(lpc[6]) << 20) |
2721 (fromAscii(lpc[7]) << 24) |
2722 (fromAscii(lpc[8]) << 28));
2723 machine_id->as_uint32s[2] = u;
2727 u = ((fromAscii(lpc[0]) << 0) |
2728 (fromAscii(lpc[1]) << 4) |
2729 (fromAscii(lpc[2]) << 8) |
2730 (fromAscii(lpc[3]) << 12) |
2731 (fromAscii(lpc[4]) << 16) |
2732 (fromAscii(lpc[5]) << 20) |
2733 (fromAscii(lpc[6]) << 24) |
2734 (fromAscii(lpc[7]) << 28));
2735 machine_id->as_uint32s[3] = u;
2741 HANDLE _dbus_global_lock (const char *mutexname)
2746 mutex = CreateMutexA( NULL, FALSE, mutexname );
2752 gotMutex = WaitForSingleObject( mutex, INFINITE );
2755 case WAIT_ABANDONED:
2756 ReleaseMutex (mutex);
2757 CloseHandle (mutex);
2768 void _dbus_global_unlock (HANDLE mutex)
2770 ReleaseMutex (mutex);
2771 CloseHandle (mutex);
2774 // for proper cleanup in dbus-daemon
2775 static HANDLE hDBusDaemonMutex = NULL;
2776 static HANDLE hDBusSharedMem = NULL;
2777 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2778 static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex";
2779 // sync _dbus_get_autolaunch_address
2780 static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex";
2781 // mutex to determine if dbus-daemon is already started (per user)
2782 static const char *cDBusDaemonMutex = "DBusDaemonMutex";
2783 // named shm for dbus adress info (per user)
2784 static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo";
2787 _dbus_get_install_root_as_hash(DBusString *out)
2789 DBusString install_path;
2791 char path[MAX_PATH*2];
2792 int path_size = sizeof(path);
2794 if (!_dbus_get_install_root(path,path_size))
2797 _dbus_string_init(&install_path);
2798 _dbus_string_append(&install_path,path);
2800 _dbus_string_init(out);
2801 _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path));
2803 if (!_dbus_sha_compute (&install_path, out))
2810 _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope)
2812 _dbus_string_init(out);
2813 _dbus_string_append(out,basestring);
2819 else if (strcmp(scope,"*install-path") == 0
2820 // for 1.3 compatibility
2821 || strcmp(scope,"install-path") == 0)
2824 if (!_dbus_get_install_root_as_hash(&temp))
2826 _dbus_string_free(out);
2829 _dbus_string_append(out,"-");
2830 _dbus_string_append(out,_dbus_string_get_const_data(&temp));
2831 _dbus_string_free(&temp);
2833 else if (strcmp(scope,"*user") == 0)
2835 _dbus_string_append(out,"-");
2836 if (!_dbus_append_user_from_current_process(out))
2838 _dbus_string_free(out);
2842 else if (strlen(scope) > 0)
2844 _dbus_string_append(out,"-");
2845 _dbus_string_append(out,scope);
2852 _dbus_get_shm_name (DBusString *out,const char *scope)
2854 return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope);
2858 _dbus_get_mutex_name (DBusString *out,const char *scope)
2860 return _dbus_get_address_string (out,cDBusDaemonMutex,scope);
2864 _dbus_daemon_is_session_bus_address_published (const char *scope)
2867 DBusString mutex_name;
2869 if (!_dbus_get_mutex_name(&mutex_name,scope))
2871 _dbus_string_free( &mutex_name );
2875 if (hDBusDaemonMutex)
2878 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2879 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2881 // we use CreateMutex instead of OpenMutex because of possible race conditions,
2882 // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx
2883 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2885 /* The client uses mutex ownership to detect a running server, so the server should do so too.
2886 Fortunally the client deletes the mutex in the lock protected area, so checking presence
2889 _dbus_global_unlock( lock );
2891 _dbus_string_free( &mutex_name );
2893 if (hDBusDaemonMutex == NULL)
2895 if (GetLastError() == ERROR_ALREADY_EXISTS)
2897 CloseHandle(hDBusDaemonMutex);
2898 hDBusDaemonMutex = NULL;
2901 // mutex wasn't created before, so return false.
2902 // We leave the mutex name allocated for later reusage
2903 // in _dbus_daemon_publish_session_bus_address.
2908 _dbus_daemon_publish_session_bus_address (const char* address, const char *scope)
2911 char *shared_addr = NULL;
2912 DBusString shm_name;
2913 DBusString mutex_name;
2915 _dbus_assert (address);
2917 if (!_dbus_get_mutex_name(&mutex_name,scope))
2919 _dbus_string_free( &mutex_name );
2923 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2924 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2926 if (!hDBusDaemonMutex)
2928 hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
2930 _dbus_string_free( &mutex_name );
2932 // acquire the mutex
2933 if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0)
2935 _dbus_global_unlock( lock );
2936 CloseHandle( hDBusDaemonMutex );
2940 if (!_dbus_get_shm_name(&shm_name,scope))
2942 _dbus_string_free( &shm_name );
2943 _dbus_global_unlock( lock );
2948 hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2949 0, strlen( address ) + 1, _dbus_string_get_const_data(&shm_name) );
2950 _dbus_assert( hDBusSharedMem );
2952 shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 );
2954 _dbus_assert (shared_addr);
2956 strcpy( shared_addr, address);
2959 UnmapViewOfFile( shared_addr );
2961 _dbus_global_unlock( lock );
2962 _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) );
2964 _dbus_string_free( &shm_name );
2969 _dbus_daemon_unpublish_session_bus_address (void)
2973 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
2974 lock = _dbus_global_lock( cUniqueDBusInitMutex );
2976 CloseHandle( hDBusSharedMem );
2978 hDBusSharedMem = NULL;
2980 ReleaseMutex( hDBusDaemonMutex );
2982 CloseHandle( hDBusDaemonMutex );
2984 hDBusDaemonMutex = NULL;
2986 _dbus_global_unlock( lock );
2990 _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name)
2998 // we know that dbus-daemon is available, so we wait until shm is available
2999 sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name));
3000 if( sharedMem == 0 )
3002 if ( sharedMem != 0)
3006 if( sharedMem == 0 )
3009 shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 );
3014 _dbus_string_init( address );
3016 _dbus_string_append( address, shared_addr );
3019 UnmapViewOfFile( shared_addr );
3021 CloseHandle( sharedMem );
3027 _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope)
3031 DBusString mutex_name;
3032 dbus_bool_t bRet = TRUE;
3034 if (!_dbus_get_mutex_name(&mutex_name,scope))
3036 _dbus_string_free( &mutex_name );
3040 // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs
3041 lock = _dbus_global_lock( cUniqueDBusInitMutex );
3044 daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) );
3045 if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT)
3047 ReleaseMutex (daemon);
3048 CloseHandle (daemon);
3050 _dbus_global_unlock( lock );
3051 _dbus_string_free( &mutex_name );
3056 bRet = _dbus_get_autolaunch_shm( address, shm_name );
3059 CloseHandle ( daemon );
3061 _dbus_global_unlock( lock );
3062 _dbus_string_free( &mutex_name );
3068 _dbus_get_autolaunch_address (const char *scope, DBusString *address,
3073 PROCESS_INFORMATION pi;
3074 dbus_bool_t retval = FALSE;
3076 char dbus_exe_path[MAX_PATH];
3077 char dbus_args[MAX_PATH * 2];
3078 const char * daemon_name = DBUS_DAEMON_NAME ".exe";
3079 DBusString shm_name;
3081 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3083 if (!_dbus_get_shm_name(&shm_name,scope))
3085 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name");
3089 mutex = _dbus_global_lock ( cDBusAutolaunchMutex );
3091 if (_dbus_daemon_already_runs(address,&shm_name,scope))
3093 _dbus_verbose( "found running dbus daemon at %s\n",
3094 _dbus_string_get_const_data (&shm_name) );
3099 if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3101 // Look in directory containing dbus shared library
3103 char dbus_module_path[MAX_PATH];
3106 _dbus_verbose( "did not found dbus daemon executable on default search path, "
3107 "trying path where dbus shared library is located");
3109 hmod = _dbus_win_get_dll_hmodule();
3110 rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path));
3113 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name");
3119 char *ext_idx = strrchr(dbus_module_path, '\\');
3122 if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile))
3124 dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable");
3126 printf ("please add the path to %s to your PATH environment variable\n", daemon_name);
3127 printf ("or start the daemon manually\n\n");
3130 _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path);
3136 ZeroMemory( &si, sizeof(si) );
3138 ZeroMemory( &pi, sizeof(pi) );
3140 _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session");
3142 // argv[i] = "--config-file=bus\\session.conf";
3143 // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args);
3144 if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
3146 CloseHandle (pi.hThread);
3147 CloseHandle (pi.hProcess);
3148 retval = _dbus_get_autolaunch_shm( address, &shm_name );
3149 if (retval == FALSE)
3150 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon");
3154 dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon");
3160 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3162 _DBUS_ASSERT_ERROR_IS_SET (error);
3164 _dbus_global_unlock (mutex);
3170 /** Makes the file readable by every user in the system.
3172 * @param filename the filename
3173 * @param error error location
3174 * @returns #TRUE if the file's permissions could be changed.
3177 _dbus_make_file_world_readable(const DBusString *filename,
3185 * Atomically increments an integer
3187 * @param atomic pointer to the integer to increment
3188 * @returns the value before incrementing
3192 _dbus_atomic_inc (DBusAtomic *atomic)
3194 // +/- 1 is needed here!
3195 // no volatile argument with mingw
3196 return InterlockedIncrement (&atomic->value) - 1;
3200 * Atomically decrement an integer
3202 * @param atomic pointer to the integer to decrement
3203 * @returns the value before decrementing
3207 _dbus_atomic_dec (DBusAtomic *atomic)
3209 // +/- 1 is needed here!
3210 // no volatile argument with mingw
3211 return InterlockedDecrement (&atomic->value) + 1;
3215 * Atomically get the value of an integer. It may change at any time
3216 * thereafter, so this is mostly only useful for assertions.
3218 * @param atomic pointer to the integer to get
3219 * @returns the value at this moment
3222 _dbus_atomic_get (DBusAtomic *atomic)
3224 /* In this situation, GLib issues a MemoryBarrier() and then returns
3225 * atomic->value. However, mingw from mingw.org (not to be confused with
3226 * mingw-w64 from mingw-w64.sf.net) does not have MemoryBarrier in its
3227 * headers, so we have to get a memory barrier some other way.
3229 * InterlockedIncrement is older, and is documented on MSDN to be a full
3230 * memory barrier, so let's use that.
3234 InterlockedExchange (&dummy, 1);
3236 return atomic->value;
3240 * Called when the bus daemon is signaled to reload its configuration; any
3241 * caches should be nuked. Of course any caches that need explicit reload
3242 * are probably broken, but c'est la vie.
3247 _dbus_flush_caches (void)
3252 * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently
3253 * for Winsock so is abstracted)
3255 * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK
3258 _dbus_get_is_errno_eagain_or_ewouldblock (void)
3260 return errno == WSAEWOULDBLOCK;
3264 * return the absolute path of the dbus installation
3266 * @param prefix buffer for installation path
3267 * @param len length of buffer
3268 * @returns #FALSE on failure
3271 _dbus_get_install_root(char *prefix, int len)
3273 //To find the prefix, we cut the filename and also \bin\ if present
3277 pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len);
3278 if ( pathLength == 0 || GetLastError() != 0 ) {
3282 lastSlash = _mbsrchr(prefix, '\\');
3283 if (lastSlash == NULL) {
3287 //cut off binary name
3290 //cut possible "\\bin"
3292 //this fails if we are in a double-byte system codepage and the
3293 //folder's name happens to end with the *bytes*
3294 //"\\bin"... (I.e. the second byte of some Han character and then
3295 //the Latin "bin", but that is not likely I think...
3296 if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0)
3298 else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0)
3300 else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0)
3307 find config file either from installation or build root according to
3308 the following path layout
3310 bin/dbus-daemon[d].exe
3311 etc/<config-file>.conf *or* etc/dbus-1/<config-file>.conf
3312 (the former above is what dbus4win uses, the latter above is
3313 what a "normal" Unix-style "make install" uses)
3316 bin/dbus-daemon[d].exe
3317 bus/<config-file>.conf
3320 _dbus_get_config_file_name(DBusString *config_file, char *s)
3322 char path[MAX_PATH*2];
3323 int path_size = sizeof(path);
3325 if (!_dbus_get_install_root(path,path_size))
3328 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3330 strcat(path,"etc\\");
3332 if (_dbus_file_exists(path))
3334 // find path from executable
3335 if (!_dbus_string_append (config_file, path))
3340 if (!_dbus_get_install_root(path,path_size))
3342 if(strlen(s) + 11 + strlen(path) > sizeof(path)-2)
3344 strcat(path,"etc\\dbus-1\\");
3347 if (_dbus_file_exists(path))
3349 if (!_dbus_string_append (config_file, path))
3354 if (!_dbus_get_install_root(path,path_size))
3356 if(strlen(s) + 4 + strlen(path) > sizeof(path)-2)
3358 strcat(path,"bus\\");
3361 if (_dbus_file_exists(path))
3363 if (!_dbus_string_append (config_file, path))
3371 /* See comment in dbus-sysdeps-unix.c */
3373 _dbus_lookup_session_address (dbus_bool_t *supported,
3374 DBusString *address,
3377 /* Probably fill this in with something based on COM? */
3383 * Appends the directory in which a keyring for the given credentials
3384 * should be stored. The credentials should have either a Windows or
3385 * UNIX user in them. The directory should be an absolute path.
3387 * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably
3388 * be something else, since the dotfile convention is not normal on Windows.
3390 * @param directory string to append directory to
3391 * @param credentials credentials the directory should be for
3393 * @returns #FALSE on no memory
3396 _dbus_append_keyring_directory_for_credentials (DBusString *directory,
3397 DBusCredentials *credentials)
3401 const char *homepath;
3402 const char *homedrive;
3404 _dbus_assert (credentials != NULL);
3405 _dbus_assert (!_dbus_credentials_are_anonymous (credentials));
3407 if (!_dbus_string_init (&homedir))
3410 homedrive = _dbus_getenv("HOMEDRIVE");
3411 if (homedrive != NULL && *homedrive != '\0')
3413 _dbus_string_append(&homedir,homedrive);
3416 homepath = _dbus_getenv("HOMEPATH");
3417 if (homepath != NULL && *homepath != '\0')
3419 _dbus_string_append(&homedir,homepath);
3422 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
3424 const char *override;
3426 override = _dbus_getenv ("DBUS_TEST_HOMEDIR");
3427 if (override != NULL && *override != '\0')
3429 _dbus_string_set_length (&homedir, 0);
3430 if (!_dbus_string_append (&homedir, override))
3433 _dbus_verbose ("Using fake homedir for testing: %s\n",
3434 _dbus_string_get_const_data (&homedir));
3438 /* Not strictly thread-safe, but if we fail at thread-safety here,
3439 * the worst that will happen is some extra warnings. */
3440 static dbus_bool_t already_warned = FALSE;
3441 if (!already_warned)
3443 _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n");
3444 already_warned = TRUE;
3451 /* It's not possible to create a .something directory in Windows CE
3452 using the file explorer. */
3453 #define KEYRING_DIR "dbus-keyrings"
3455 #define KEYRING_DIR ".dbus-keyrings"
3458 _dbus_string_init_const (&dotdir, KEYRING_DIR);
3459 if (!_dbus_concat_dir_and_file (&homedir,
3463 if (!_dbus_string_copy (&homedir, 0,
3464 directory, _dbus_string_get_length (directory))) {
3468 _dbus_string_free (&homedir);
3472 _dbus_string_free (&homedir);
3476 /** Checks if a file exists
3478 * @param file full path to the file
3479 * @returns #TRUE if file exists
3482 _dbus_file_exists (const char *file)
3484 DWORD attributes = GetFileAttributesA (file);
3486 if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND)
3493 * A wrapper around strerror() because some platforms
3494 * may be lame and not have strerror().
3496 * @param error_number errno.
3497 * @returns error description.
3500 _dbus_strerror (int error_number)
3508 switch (error_number)
3511 return "Interrupted function call";
3513 return "Permission denied";
3515 return "Bad address";
3517 return "Invalid argument";
3519 return "Too many open files";
3520 case WSAEWOULDBLOCK:
3521 return "Resource temporarily unavailable";
3522 case WSAEINPROGRESS:
3523 return "Operation now in progress";
3525 return "Operation already in progress";
3527 return "Socket operation on nonsocket";
3528 case WSAEDESTADDRREQ:
3529 return "Destination address required";
3531 return "Message too long";
3533 return "Protocol wrong type for socket";
3534 case WSAENOPROTOOPT:
3535 return "Bad protocol option";
3536 case WSAEPROTONOSUPPORT:
3537 return "Protocol not supported";
3538 case WSAESOCKTNOSUPPORT:
3539 return "Socket type not supported";
3541 return "Operation not supported";
3542 case WSAEPFNOSUPPORT:
3543 return "Protocol family not supported";
3544 case WSAEAFNOSUPPORT:
3545 return "Address family not supported by protocol family";
3547 return "Address already in use";
3548 case WSAEADDRNOTAVAIL:
3549 return "Cannot assign requested address";
3551 return "Network is down";
3552 case WSAENETUNREACH:
3553 return "Network is unreachable";
3555 return "Network dropped connection on reset";
3556 case WSAECONNABORTED:
3557 return "Software caused connection abort";
3559 return "Connection reset by peer";
3561 return "No buffer space available";
3563 return "Socket is already connected";
3565 return "Socket is not connected";
3567 return "Cannot send after socket shutdown";
3569 return "Connection timed out";
3570 case WSAECONNREFUSED:
3571 return "Connection refused";
3573 return "Host is down";
3574 case WSAEHOSTUNREACH:
3575 return "No route to host";
3577 return "Too many processes";
3579 return "Graceful shutdown in progress";
3580 case WSATYPE_NOT_FOUND:
3581 return "Class type not found";
3582 case WSAHOST_NOT_FOUND:
3583 return "Host not found";
3585 return "Nonauthoritative host not found";
3586 case WSANO_RECOVERY:
3587 return "This is a nonrecoverable error";
3589 return "Valid name, no data record of requested type";
3590 case WSA_INVALID_HANDLE:
3591 return "Specified event object handle is invalid";
3592 case WSA_INVALID_PARAMETER:
3593 return "One or more parameters are invalid";
3594 case WSA_IO_INCOMPLETE:
3595 return "Overlapped I/O event object not in signaled state";
3596 case WSA_IO_PENDING:
3597 return "Overlapped operations will complete later";
3598 case WSA_NOT_ENOUGH_MEMORY:
3599 return "Insufficient memory available";
3600 case WSA_OPERATION_ABORTED:
3601 return "Overlapped operation aborted";
3602 #ifdef WSAINVALIDPROCTABLE
3604 case WSAINVALIDPROCTABLE:
3605 return "Invalid procedure table from service provider";
3607 #ifdef WSAINVALIDPROVIDER
3609 case WSAINVALIDPROVIDER:
3610 return "Invalid service provider version number";
3612 #ifdef WSAPROVIDERFAILEDINIT
3614 case WSAPROVIDERFAILEDINIT:
3615 return "Unable to initialize a service provider";
3618 case WSASYSCALLFAILURE:
3619 return "System call failure";
3621 msg = strerror (error_number);
3630 * Assigns an error name and message corresponding to a Win32 error
3631 * code to a DBusError. Does nothing if error is #NULL.
3633 * @param error the error.
3634 * @param code the Win32 error code
3637 _dbus_win_set_error_from_win_error (DBusError *error,
3642 /* As we want the English message, use the A API */
3643 FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |
3644 FORMAT_MESSAGE_IGNORE_INSERTS |
3645 FORMAT_MESSAGE_FROM_SYSTEM,
3646 NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US),
3647 (LPSTR) &msg, 0, NULL);
3652 msg_copy = dbus_malloc (strlen (msg));
3653 strcpy (msg_copy, msg);
3656 dbus_set_error (error, "win32.error", "%s", msg_copy);
3659 dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
3663 _dbus_win_warn_win_error (const char *message,
3668 dbus_error_init (&error);
3669 _dbus_win_set_error_from_win_error (&error, code);
3670 _dbus_warn ("%s: %s\n", message, error.message);
3671 dbus_error_free (&error);
3675 * Removes a directory; Directory must be empty
3677 * @param filename directory filename
3678 * @param error initialized error object
3679 * @returns #TRUE on success
3682 _dbus_delete_directory (const DBusString *filename,
3685 const char *filename_c;
3687 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
3689 filename_c = _dbus_string_get_const_data (filename);
3691 if (RemoveDirectoryA (filename_c) == 0)
3693 char *emsg = _dbus_win_error_string (GetLastError ());
3694 dbus_set_error (error, _dbus_win_error_from_last_error (),
3695 "Failed to remove directory %s: %s",
3697 _dbus_win_free_error_string (emsg);
3705 * Checks whether the filename is an absolute path
3707 * @param filename the filename
3708 * @returns #TRUE if an absolute path
3711 _dbus_path_is_absolute (const DBusString *filename)
3713 if (_dbus_string_get_length (filename) > 0)
3714 return _dbus_string_get_byte (filename, 1) == ':'
3715 || _dbus_string_get_byte (filename, 0) == '\\'
3716 || _dbus_string_get_byte (filename, 0) == '/';
3722 _dbus_check_setuid (void)
3727 /** @} end of sysdeps-win */
3728 /* tests in dbus-sysdeps-util.c */