/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-BUS implementation) * * Copyright (C) 2002, 2003 Red Hat, Inc. * Copyright (C) 2003 CodeFactory AB * Copyright (C) 2005 Novell, Inc. * Copyright (C) 2006 Peter Kümmel * Copyright (C) 2006 Christian Ehrlicher * Copyright (C) 2006-2010 Ralf Habacker * * Licensed under the Academic Free License version 2.1 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #include #define STRSAFE_NO_DEPRECATE #ifndef DBUS_WINCE #ifndef _WIN32_WINNT #define _WIN32_WINNT 0x0501 #endif #endif #include "dbus-internals.h" #include "dbus-sha.h" #include "dbus-sysdeps.h" #include "dbus-threads.h" #include "dbus-protocol.h" #include "dbus-string.h" #include "dbus-sysdeps.h" #include "dbus-sysdeps-win.h" #include "dbus-protocol.h" #include "dbus-hash.h" #include "dbus-sockets-win.h" #include "dbus-list.h" #include "dbus-nonce.h" #include "dbus-credentials.h" #include #include #include /* Declarations missing in mingw's headers */ extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid); extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid); #include #include #if HAVE_ERRNO_H #include #endif #ifndef DBUS_WINCE #include #include #include #endif #ifdef HAVE_WS2TCPIP_H /* getaddrinfo for Windows CE (and Windows). */ #include #endif #ifdef HAVE_WSPIAPI_H // needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo) #ifdef __GNUC__ #define _inline #include "wspiapi.h" #else #include #endif #endif // HAVE_WSPIAPI_H #ifndef O_BINARY #define O_BINARY 0 #endif typedef int socklen_t; void _dbus_win_set_errno (int err) { #ifdef DBUS_WINCE SetLastError (err); #else errno = err; #endif } /* Convert GetLastError() to a dbus error. */ const char* _dbus_win_error_from_last_error (void) { switch (GetLastError()) { case 0: return DBUS_ERROR_FAILED; case ERROR_NO_MORE_FILES: case ERROR_TOO_MANY_OPEN_FILES: return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */ case ERROR_ACCESS_DENIED: case ERROR_CANNOT_MAKE: return DBUS_ERROR_ACCESS_DENIED; case ERROR_NOT_ENOUGH_MEMORY: return DBUS_ERROR_NO_MEMORY; case ERROR_FILE_EXISTS: return DBUS_ERROR_FILE_EXISTS; case ERROR_FILE_NOT_FOUND: case ERROR_PATH_NOT_FOUND: return DBUS_ERROR_FILE_NOT_FOUND; } return DBUS_ERROR_FAILED; } char* _dbus_win_error_string (int error_number) { char *msg; FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_number, 0, (LPSTR) &msg, 0, NULL); if (msg[strlen (msg) - 1] == '\n') msg[strlen (msg) - 1] = '\0'; if (msg[strlen (msg) - 1] == '\r') msg[strlen (msg) - 1] = '\0'; return msg; } void _dbus_win_free_error_string (char *string) { LocalFree (string); } /** * Socket interface * */ /** * Thin wrapper around the read() system call that appends * the data it reads to the DBusString buffer. It appends * up to the given count, and returns the same value * and same errno as read(). The only exception is that * _dbus_read_socket() handles EINTR for you. * _dbus_read_socket() can return ENOMEM, even though * regular UNIX read doesn't. * * @param fd the file descriptor to read from * @param buffer the buffer to append data to * @param count the amount of data to read * @returns the number of bytes read or -1 */ int _dbus_read_socket (int fd, DBusString *buffer, int count) { int bytes_read; int start; char *data; _dbus_assert (count >= 0); start = _dbus_string_get_length (buffer); if (!_dbus_string_lengthen (buffer, count)) { _dbus_win_set_errno (ENOMEM); return -1; } data = _dbus_string_get_data_len (buffer, start, count); again: _dbus_verbose ("recv: count=%d fd=%d\n", count, fd); bytes_read = recv (fd, data, count, 0); if (bytes_read == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO(); _dbus_verbose ("recv: failed: %s (%d)\n", _dbus_strerror (errno), errno); bytes_read = -1; } else _dbus_verbose ("recv: = %d\n", bytes_read); if (bytes_read < 0) { if (errno == EINTR) goto again; else { /* put length back (note that this doesn't actually realloc anything) */ _dbus_string_set_length (buffer, start); return -1; } } else { /* put length back (doesn't actually realloc) */ _dbus_string_set_length (buffer, start + bytes_read); #if 0 if (bytes_read > 0) _dbus_verbose_bytes_of_string (buffer, start, bytes_read); #endif return bytes_read; } } /** * Thin wrapper around the write() system call that writes a part of a * DBusString and handles EINTR for you. * * @param fd the file descriptor to write * @param buffer the buffer to write data from * @param start the first byte in the buffer to write * @param len the number of bytes to try to write * @returns the number of bytes written or -1 on error */ int _dbus_write_socket (int fd, const DBusString *buffer, int start, int len) { const char *data; int bytes_written; data = _dbus_string_get_const_data_len (buffer, start, len); again: _dbus_verbose ("send: len=%d fd=%d\n", len, fd); bytes_written = send (fd, data, len, 0); if (bytes_written == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO(); _dbus_verbose ("send: failed: %s\n", _dbus_strerror_from_errno ()); bytes_written = -1; } else _dbus_verbose ("send: = %d\n", bytes_written); if (bytes_written < 0 && errno == EINTR) goto again; #if 0 if (bytes_written > 0) _dbus_verbose_bytes_of_string (buffer, start, bytes_written); #endif return bytes_written; } /** * Closes a file descriptor. * * @param fd the file descriptor * @param error error object * @returns #FALSE if error set */ dbus_bool_t _dbus_close_socket (int fd, DBusError *error) { _DBUS_ASSERT_ERROR_IS_CLEAR (error); again: if (closesocket (fd) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); if (errno == EINTR) goto again; dbus_set_error (error, _dbus_error_from_errno (errno), "Could not close socket: socket=%d, , %s", fd, _dbus_strerror_from_errno ()); return FALSE; } _dbus_verbose ("_dbus_close_socket: socket=%d, \n", fd); return TRUE; } /** * Sets the file descriptor to be close * on exec. Should be called for all file * descriptors in D-Bus code. * * @param fd the file descriptor */ void _dbus_fd_set_close_on_exec (intptr_t handle) { if ( !SetHandleInformation( (HANDLE) handle, HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE, 0 /*disable both flags*/ ) ) { _dbus_win_warn_win_error ("Disabling socket handle inheritance failed:", GetLastError()); } } /** * Sets a file descriptor to be nonblocking. * * @param fd the file descriptor. * @param error address of error location. * @returns #TRUE on success. */ dbus_bool_t _dbus_set_fd_nonblocking (int handle, DBusError *error) { u_long one = 1; _DBUS_ASSERT_ERROR_IS_CLEAR (error); if (ioctlsocket (handle, FIONBIO, &one) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to set socket %d:%d to nonblocking: %s", handle, _dbus_strerror_from_errno ()); return FALSE; } return TRUE; } /** * Like _dbus_write() but will use writev() if possible * to write both buffers in sequence. The return value * is the number of bytes written in the first buffer, * plus the number written in the second. If the first * buffer is written successfully and an error occurs * writing the second, the number of bytes in the first * is returned (i.e. the error is ignored), on systems that * don't have writev. Handles EINTR for you. * The second buffer may be #NULL. * * @param fd the file descriptor * @param buffer1 first buffer * @param start1 first byte to write in first buffer * @param len1 number of bytes to write from first buffer * @param buffer2 second buffer, or #NULL * @param start2 first byte to write in second buffer * @param len2 number of bytes to write in second buffer * @returns total bytes written from both buffers, or -1 on error */ int _dbus_write_socket_two (int fd, const DBusString *buffer1, int start1, int len1, const DBusString *buffer2, int start2, int len2) { WSABUF vectors[2]; const char *data1; const char *data2; int rc; DWORD bytes_written; _dbus_assert (buffer1 != NULL); _dbus_assert (start1 >= 0); _dbus_assert (start2 >= 0); _dbus_assert (len1 >= 0); _dbus_assert (len2 >= 0); data1 = _dbus_string_get_const_data_len (buffer1, start1, len1); if (buffer2 != NULL) data2 = _dbus_string_get_const_data_len (buffer2, start2, len2); else { data2 = NULL; start2 = 0; len2 = 0; } vectors[0].buf = (char*) data1; vectors[0].len = len1; vectors[1].buf = (char*) data2; vectors[1].len = len2; again: _dbus_verbose ("WSASend: len1+2=%d+%d fd=%d\n", len1, len2, fd); rc = WSASend (fd, vectors, data2 ? 2 : 1, &bytes_written, 0, NULL, NULL); if (rc == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); _dbus_verbose ("WSASend: failed: %s\n", _dbus_strerror_from_errno ()); bytes_written = -1; } else _dbus_verbose ("WSASend: = %ld\n", bytes_written); if (bytes_written < 0 && errno == EINTR) goto again; return bytes_written; } dbus_bool_t _dbus_socket_is_invalid (int fd) { return fd == INVALID_SOCKET ? TRUE : FALSE; } #if 0 /** * Opens the client side of a Windows named pipe. The connection D-BUS * file descriptor index is returned. It is set up as nonblocking. * * @param path the path to named pipe socket * @param error return location for error code * @returns connection D-BUS file descriptor or -1 on error */ int _dbus_connect_named_pipe (const char *path, DBusError *error) { _dbus_assert_not_reached ("not implemented"); } #endif void _dbus_win_startup_winsock (void) { /* Straight from MSDN, deuglified */ static dbus_bool_t beenhere = FALSE; WORD wVersionRequested; WSADATA wsaData; int err; if (beenhere) return; wVersionRequested = MAKEWORD (2, 0); err = WSAStartup (wVersionRequested, &wsaData); if (err != 0) { _dbus_assert_not_reached ("Could not initialize WinSock"); _dbus_abort (); } /* Confirm that the WinSock DLL supports 2.0. Note that if the DLL * supports versions greater than 2.0 in addition to 2.0, it will * still return 2.0 in wVersion since that is the version we * requested. */ if (LOBYTE (wsaData.wVersion) != 2 || HIBYTE (wsaData.wVersion) != 0) { _dbus_assert_not_reached ("No usable WinSock found"); _dbus_abort (); } beenhere = TRUE; } /************************************************************************ UTF / string code ************************************************************************/ /** * Measure the message length without terminating nul */ int _dbus_printf_string_upper_bound (const char *format, va_list args) { /* MSVCRT's vsnprintf semantics are a bit different */ char buf[1024]; int bufsize; int len; bufsize = sizeof (buf); len = _vsnprintf (buf, bufsize - 1, format, args); while (len == -1) /* try again */ { char *p; bufsize *= 2; p = malloc (bufsize); if (p == NULL) return -1; len = _vsnprintf (p, bufsize - 1, format, args); free (p); } return len; } /** * Returns the UTF-16 form of a UTF-8 string. The result should be * freed with dbus_free() when no longer needed. * * @param str the UTF-8 string * @param error return location for error code */ wchar_t * _dbus_win_utf8_to_utf16 (const char *str, DBusError *error) { DBusString s; int n; wchar_t *retval; _dbus_string_init_const (&s, str); if (!_dbus_string_validate_utf8 (&s, 0, _dbus_string_get_length (&s))) { dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid UTF-8"); return NULL; } n = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0); if (n == 0) { _dbus_win_set_error_from_win_error (error, GetLastError ()); return NULL; } retval = dbus_new (wchar_t, n); if (!retval) { _DBUS_SET_OOM (error); return NULL; } if (MultiByteToWideChar (CP_UTF8, 0, str, -1, retval, n) != n) { dbus_free (retval); dbus_set_error_const (error, DBUS_ERROR_FAILED, "MultiByteToWideChar inconsistency"); return NULL; } return retval; } /** * Returns the UTF-8 form of a UTF-16 string. The result should be * freed with dbus_free() when no longer needed. * * @param str the UTF-16 string * @param error return location for error code */ char * _dbus_win_utf16_to_utf8 (const wchar_t *str, DBusError *error) { int n; char *retval; n = WideCharToMultiByte (CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL); if (n == 0) { _dbus_win_set_error_from_win_error (error, GetLastError ()); return NULL; } retval = dbus_malloc (n); if (!retval) { _DBUS_SET_OOM (error); return NULL; } if (WideCharToMultiByte (CP_UTF8, 0, str, -1, retval, n, NULL, NULL) != n) { dbus_free (retval); dbus_set_error_const (error, DBUS_ERROR_FAILED, "WideCharToMultiByte inconsistency"); return NULL; } return retval; } /************************************************************************ ************************************************************************/ dbus_bool_t _dbus_win_account_to_sid (const wchar_t *waccount, void **ppsid, DBusError *error) { dbus_bool_t retval = FALSE; DWORD sid_length, wdomain_length; SID_NAME_USE use; wchar_t *wdomain; *ppsid = NULL; sid_length = 0; wdomain_length = 0; if (!LookupAccountNameW (NULL, waccount, NULL, &sid_length, NULL, &wdomain_length, &use) && GetLastError () != ERROR_INSUFFICIENT_BUFFER) { _dbus_win_set_error_from_win_error (error, GetLastError ()); return FALSE; } *ppsid = dbus_malloc (sid_length); if (!*ppsid) { _DBUS_SET_OOM (error); return FALSE; } wdomain = dbus_new (wchar_t, wdomain_length); if (!wdomain) { _DBUS_SET_OOM (error); goto out1; } if (!LookupAccountNameW (NULL, waccount, (PSID) *ppsid, &sid_length, wdomain, &wdomain_length, &use)) { _dbus_win_set_error_from_win_error (error, GetLastError ()); goto out2; } if (!IsValidSid ((PSID) *ppsid)) { dbus_set_error_const (error, DBUS_ERROR_FAILED, "Invalid SID"); goto out2; } retval = TRUE; out2: dbus_free (wdomain); out1: if (!retval) { dbus_free (*ppsid); *ppsid = NULL; } return retval; } /** @} end of sysdeps-win */ /** * The only reason this is separate from _dbus_getpid() is to allow it * on Windows for logging but not for other purposes. * * @returns process ID to put in log messages */ unsigned long _dbus_pid_for_log (void) { return _dbus_getpid (); } #ifndef DBUS_WINCE /** Gets our SID * @param points to sid buffer, need to be freed with LocalFree() * @returns process sid */ static dbus_bool_t _dbus_getsid(char **sid) { HANDLE process_token = INVALID_HANDLE_VALUE; TOKEN_USER *token_user = NULL; DWORD n; PSID psid; int retval = FALSE; if (!OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &process_token)) { _dbus_win_warn_win_error ("OpenProcessToken failed", GetLastError ()); goto failed; } if ((!GetTokenInformation (process_token, TokenUser, NULL, 0, &n) && GetLastError () != ERROR_INSUFFICIENT_BUFFER) || (token_user = alloca (n)) == NULL || !GetTokenInformation (process_token, TokenUser, token_user, n, &n)) { _dbus_win_warn_win_error ("GetTokenInformation failed", GetLastError ()); goto failed; } psid = token_user->User.Sid; if (!IsValidSid (psid)) { _dbus_verbose("%s invalid sid\n",__FUNCTION__); goto failed; } if (!ConvertSidToStringSidA (psid, sid)) { _dbus_verbose("%s invalid sid\n",__FUNCTION__); goto failed; } //okay: retval = TRUE; failed: if (process_token != INVALID_HANDLE_VALUE) CloseHandle (process_token); _dbus_verbose("_dbus_getsid() returns %d\n",retval); return retval; } #endif /************************************************************************ pipes ************************************************************************/ /** * Creates a full-duplex pipe (as in socketpair()). * Sets both ends of the pipe nonblocking. * * @param fd1 return location for one end * @param fd2 return location for the other end * @param blocking #TRUE if pipe should be blocking * @param error error return * @returns #FALSE on failure (if error is set) */ dbus_bool_t _dbus_full_duplex_pipe (int *fd1, int *fd2, dbus_bool_t blocking, DBusError *error) { SOCKET temp, socket1 = -1, socket2 = -1; struct sockaddr_in saddr; int len; u_long arg; _dbus_win_startup_winsock (); temp = socket (AF_INET, SOCK_STREAM, 0); if (temp == INVALID_SOCKET) { DBUS_SOCKET_SET_ERRNO (); goto out0; } _DBUS_ZERO (saddr); saddr.sin_family = AF_INET; saddr.sin_port = 0; saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); if (bind (temp, (struct sockaddr *)&saddr, sizeof (saddr)) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out0; } if (listen (temp, 1) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out0; } len = sizeof (saddr); if (getsockname (temp, (struct sockaddr *)&saddr, &len) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out0; } socket1 = socket (AF_INET, SOCK_STREAM, 0); if (socket1 == INVALID_SOCKET) { DBUS_SOCKET_SET_ERRNO (); goto out0; } if (connect (socket1, (struct sockaddr *)&saddr, len) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out1; } socket2 = accept (temp, (struct sockaddr *) &saddr, &len); if (socket2 == INVALID_SOCKET) { DBUS_SOCKET_SET_ERRNO (); goto out1; } if (!blocking) { arg = 1; if (ioctlsocket (socket1, FIONBIO, &arg) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out2; } arg = 1; if (ioctlsocket (socket2, FIONBIO, &arg) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); goto out2; } } *fd1 = socket1; *fd2 = socket2; _dbus_verbose ("full-duplex pipe %d:%d <-> %d:%d\n", *fd1, socket1, *fd2, socket2); closesocket (temp); return TRUE; out2: closesocket (socket2); out1: closesocket (socket1); out0: closesocket (temp); dbus_set_error (error, _dbus_error_from_errno (errno), "Could not setup socket pair: %s", _dbus_strerror_from_errno ()); return FALSE; } /** * Wrapper for poll(). * * @param fds the file descriptors to poll * @param n_fds number of descriptors in the array * @param timeout_milliseconds timeout or -1 for infinite * @returns numbers of fds with revents, or <0 on error */ int _dbus_poll (DBusPollFD *fds, int n_fds, int timeout_milliseconds) { #define USE_CHRIS_IMPL 0 #if USE_CHRIS_IMPL #define DBUS_POLL_CHAR_BUFFER_SIZE 2000 char msg[DBUS_POLL_CHAR_BUFFER_SIZE]; char *msgp; int ret = 0; int i; struct timeval tv; int ready; #define DBUS_STACK_WSAEVENTS 256 WSAEVENT eventsOnStack[DBUS_STACK_WSAEVENTS]; WSAEVENT *pEvents = NULL; if (n_fds > DBUS_STACK_WSAEVENTS) pEvents = calloc(sizeof(WSAEVENT), n_fds); else pEvents = eventsOnStack; #ifdef DBUS_ENABLE_VERBOSE_MODE msgp = msg; msgp += sprintf (msgp, "WSAEventSelect: to=%d\n\t", timeout_milliseconds); for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; if (fdp->events & _DBUS_POLLIN) msgp += sprintf (msgp, "R:%d ", fdp->fd); if (fdp->events & _DBUS_POLLOUT) msgp += sprintf (msgp, "W:%d ", fdp->fd); msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); // FIXME: more robust code for long msg // create on heap when msg[] becomes too small if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE) { _dbus_assert_not_reached ("buffer overflow in _dbus_poll"); } } msgp += sprintf (msgp, "\n"); _dbus_verbose ("%s",msg); #endif for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; WSAEVENT ev; long lNetworkEvents = FD_OOB; ev = WSACreateEvent(); if (fdp->events & _DBUS_POLLIN) lNetworkEvents |= FD_READ | FD_ACCEPT | FD_CLOSE; if (fdp->events & _DBUS_POLLOUT) lNetworkEvents |= FD_WRITE | FD_CONNECT; WSAEventSelect(fdp->fd, ev, lNetworkEvents); pEvents[i] = ev; } ready = WSAWaitForMultipleEvents (n_fds, pEvents, FALSE, timeout_milliseconds, FALSE); if (DBUS_SOCKET_API_RETURNS_ERROR (ready)) { DBUS_SOCKET_SET_ERRNO (); if (errno != WSAEWOULDBLOCK) _dbus_verbose ("WSAWaitForMultipleEvents: failed: %s\n", _dbus_strerror_from_errno ()); ret = -1; } else if (ready == WSA_WAIT_TIMEOUT) { _dbus_verbose ("WSAWaitForMultipleEvents: WSA_WAIT_TIMEOUT\n"); ret = 0; } else if (ready >= WSA_WAIT_EVENT_0 && ready < (int)(WSA_WAIT_EVENT_0 + n_fds)) { msgp = msg; msgp += sprintf (msgp, "WSAWaitForMultipleEvents: =%d\n\t", ready); for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; WSANETWORKEVENTS ne; fdp->revents = 0; WSAEnumNetworkEvents(fdp->fd, pEvents[i], &ne); if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) fdp->revents |= _DBUS_POLLIN; if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT)) fdp->revents |= _DBUS_POLLOUT; if (ne.lNetworkEvents & (FD_OOB)) fdp->revents |= _DBUS_POLLERR; if (ne.lNetworkEvents & (FD_READ | FD_ACCEPT | FD_CLOSE)) msgp += sprintf (msgp, "R:%d ", fdp->fd); if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT)) msgp += sprintf (msgp, "W:%d ", fdp->fd); if (ne.lNetworkEvents & (FD_OOB)) msgp += sprintf (msgp, "E:%d ", fdp->fd); msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents); if(ne.lNetworkEvents) ret++; WSAEventSelect(fdp->fd, pEvents[i], 0); } msgp += sprintf (msgp, "\n"); _dbus_verbose ("%s",msg); } else { _dbus_verbose ("WSAWaitForMultipleEvents: failed for unknown reason!"); ret = -1; } for(i = 0; i < n_fds; i++) { WSACloseEvent(pEvents[i]); } if (n_fds > DBUS_STACK_WSAEVENTS) free(pEvents); return ret; #else /* USE_CHRIS_IMPL */ #define DBUS_POLL_CHAR_BUFFER_SIZE 2000 char msg[DBUS_POLL_CHAR_BUFFER_SIZE]; char *msgp; fd_set read_set, write_set, err_set; int max_fd = 0; int i; struct timeval tv; int ready; FD_ZERO (&read_set); FD_ZERO (&write_set); FD_ZERO (&err_set); #ifdef DBUS_ENABLE_VERBOSE_MODE msgp = msg; msgp += sprintf (msgp, "select: to=%d\n\t", timeout_milliseconds); for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; if (fdp->events & _DBUS_POLLIN) msgp += sprintf (msgp, "R:%d ", fdp->fd); if (fdp->events & _DBUS_POLLOUT) msgp += sprintf (msgp, "W:%d ", fdp->fd); msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); // FIXME: more robust code for long msg // create on heap when msg[] becomes too small if (msgp >= msg + DBUS_POLL_CHAR_BUFFER_SIZE) { _dbus_assert_not_reached ("buffer overflow in _dbus_poll"); } } msgp += sprintf (msgp, "\n"); _dbus_verbose ("%s",msg); #endif for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; if (fdp->events & _DBUS_POLLIN) FD_SET (fdp->fd, &read_set); if (fdp->events & _DBUS_POLLOUT) FD_SET (fdp->fd, &write_set); FD_SET (fdp->fd, &err_set); max_fd = MAX (max_fd, fdp->fd); } // Avoid random lockups with send(), for lack of a better solution so far tv.tv_sec = timeout_milliseconds < 0 ? 1 : timeout_milliseconds / 1000; tv.tv_usec = timeout_milliseconds < 0 ? 0 : (timeout_milliseconds % 1000) * 1000; ready = select (max_fd + 1, &read_set, &write_set, &err_set, &tv); if (DBUS_SOCKET_API_RETURNS_ERROR (ready)) { DBUS_SOCKET_SET_ERRNO (); if (errno != WSAEWOULDBLOCK) _dbus_verbose ("select: failed: %s\n", _dbus_strerror_from_errno ()); } else if (ready == 0) _dbus_verbose ("select: = 0\n"); else if (ready > 0) { #ifdef DBUS_ENABLE_VERBOSE_MODE msgp = msg; msgp += sprintf (msgp, "select: = %d:\n\t", ready); for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; if (FD_ISSET (fdp->fd, &read_set)) msgp += sprintf (msgp, "R:%d ", fdp->fd); if (FD_ISSET (fdp->fd, &write_set)) msgp += sprintf (msgp, "W:%d ", fdp->fd); if (FD_ISSET (fdp->fd, &err_set)) msgp += sprintf (msgp, "E:%d\n\t", fdp->fd); } msgp += sprintf (msgp, "\n"); _dbus_verbose ("%s",msg); #endif for (i = 0; i < n_fds; i++) { DBusPollFD *fdp = &fds[i]; fdp->revents = 0; if (FD_ISSET (fdp->fd, &read_set)) fdp->revents |= _DBUS_POLLIN; if (FD_ISSET (fdp->fd, &write_set)) fdp->revents |= _DBUS_POLLOUT; if (FD_ISSET (fdp->fd, &err_set)) fdp->revents |= _DBUS_POLLERR; } } return ready; #endif /* USE_CHRIS_IMPL */ } /****************************************************************************** Original CVS version of dbus-sysdeps.c ******************************************************************************/ /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* dbus-sysdeps.c Wrappers around system/libc features (internal to D-Bus implementation) * * Copyright (C) 2002, 2003 Red Hat, Inc. * Copyright (C) 2003 CodeFactory AB * Copyright (C) 2005 Novell, Inc. * * Licensed under the Academic Free License version 2.1 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ /** * Exit the process, returning the given value. * * @param code the exit code */ void _dbus_exit (int code) { _exit (code); } /** * Creates a socket and connects to a socket at the given host * and port. The connection fd is returned, and is set up as * nonblocking. * * @param host the host name to connect to * @param port the port to connect to * @param family the address family to listen on, NULL for all * @param error return location for error code * @returns connection file descriptor or -1 on error */ int _dbus_connect_tcp_socket (const char *host, const char *port, const char *family, DBusError *error) { return _dbus_connect_tcp_socket_with_nonce (host, port, family, (const char*)NULL, error); } int _dbus_connect_tcp_socket_with_nonce (const char *host, const char *port, const char *family, const char *noncefile, DBusError *error) { int fd = -1, res; struct addrinfo hints; struct addrinfo *ai, *tmp; _DBUS_ASSERT_ERROR_IS_CLEAR (error); _dbus_win_startup_winsock (); _DBUS_ZERO (hints); if (!family) hints.ai_family = AF_UNSPEC; else if (!strcmp(family, "ipv4")) hints.ai_family = AF_INET; else if (!strcmp(family, "ipv6")) hints.ai_family = AF_INET6; else { dbus_set_error (error, DBUS_ERROR_INVALID_ARGS, "Unknown address family %s", family); return -1; } hints.ai_protocol = IPPROTO_TCP; hints.ai_socktype = SOCK_STREAM; #ifdef AI_ADDRCONFIG hints.ai_flags = AI_ADDRCONFIG; #else hints.ai_flags = 0; #endif if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai) { dbus_set_error (error, _dbus_error_from_errno (res), "Failed to lookup host/port: \"%s:%s\": %s (%d)", host, port, _dbus_strerror(res), res); return -1; } tmp = ai; while (tmp) { if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to open socket: %s", _dbus_strerror_from_errno ()); freeaddrinfo(ai); return -1; } _DBUS_ASSERT_ERROR_IS_CLEAR(error); if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); closesocket(fd); fd = -1; tmp = tmp->ai_next; continue; } break; } freeaddrinfo(ai); if (fd == -1) { dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to connect to socket \"%s:%s\" %s", host, port, _dbus_strerror_from_errno ()); return -1; } if (noncefile != NULL) { DBusString noncefileStr; dbus_bool_t ret; if (!_dbus_string_init (&noncefileStr) || !_dbus_string_append(&noncefileStr, noncefile)) { closesocket (fd); dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); return -1; } ret = _dbus_send_nonce (fd, &noncefileStr, error); _dbus_string_free (&noncefileStr); if (!ret) { closesocket (fd); return -1; } } _dbus_fd_set_close_on_exec (fd); if (!_dbus_set_fd_nonblocking (fd, error)) { closesocket (fd); return -1; } return fd; } /** * Creates a socket and binds it to the given path, then listens on * the socket. The socket is set to be nonblocking. In case of port=0 * a random free port is used and returned in the port parameter. * If inaddr_any is specified, the hostname is ignored. * * @param host the host name to listen on * @param port the port to listen on, if zero a free port will be used * @param family the address family to listen on, NULL for all * @param retport string to return the actual port listened on * @param fds_p location to store returned file descriptors * @param error return location for errors * @returns the number of listening file descriptors or -1 on error */ int _dbus_listen_tcp_socket (const char *host, const char *port, const char *family, DBusString *retport, int **fds_p, DBusError *error) { int nlisten_fd = 0, *listen_fd = NULL, res, i, port_num = -1; struct addrinfo hints; struct addrinfo *ai, *tmp; // On Vista, sockaddr_gen must be a sockaddr_in6, and not a sockaddr_in6_old //That's required for family == IPv6(which is the default on Vista if family is not given) //So we use our own union instead of sockaddr_gen: typedef union { struct sockaddr Address; struct sockaddr_in AddressIn; struct sockaddr_in6 AddressIn6; } mysockaddr_gen; *fds_p = NULL; _DBUS_ASSERT_ERROR_IS_CLEAR (error); _dbus_win_startup_winsock (); _DBUS_ZERO (hints); if (!family) hints.ai_family = AF_UNSPEC; else if (!strcmp(family, "ipv4")) hints.ai_family = AF_INET; else if (!strcmp(family, "ipv6")) hints.ai_family = AF_INET6; else { dbus_set_error (error, DBUS_ERROR_INVALID_ARGS, "Unknown address family %s", family); return -1; } hints.ai_protocol = IPPROTO_TCP; hints.ai_socktype = SOCK_STREAM; #ifdef AI_ADDRCONFIG hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE; #else hints.ai_flags = AI_PASSIVE; #endif redo_lookup_with_port: if ((res = getaddrinfo(host, port, &hints, &ai)) != 0 || !ai) { dbus_set_error (error, _dbus_error_from_errno (res), "Failed to lookup host/port: \"%s:%s\": %s (%d)", host ? host : "*", port, _dbus_strerror(res), res); return -1; } tmp = ai; while (tmp) { int fd = -1, *newlisten_fd; if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) == INVALID_SOCKET) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to open socket: %s", _dbus_strerror_from_errno ()); goto failed; } _DBUS_ASSERT_ERROR_IS_CLEAR(error); if (bind (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to bind socket \"%s:%s\": %s", host ? host : "*", port, _dbus_strerror_from_errno ()); closesocket (fd); goto failed; } if (listen (fd, 30 /* backlog */) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to listen on socket \"%s:%s\": %s", host ? host : "*", port, _dbus_strerror_from_errno ()); closesocket (fd); goto failed; } newlisten_fd = dbus_realloc(listen_fd, sizeof(int)*(nlisten_fd+1)); if (!newlisten_fd) { closesocket (fd); dbus_set_error (error, DBUS_ERROR_NO_MEMORY, "Failed to allocate file handle array"); goto failed; } listen_fd = newlisten_fd; listen_fd[nlisten_fd] = fd; nlisten_fd++; if (!_dbus_string_get_length(retport)) { /* If the user didn't specify a port, or used 0, then the kernel chooses a port. After the first address is bound to, we need to force all remaining addresses to use the same port */ if (!port || !strcmp(port, "0")) { mysockaddr_gen addr; socklen_t addrlen = sizeof(addr); char portbuf[10]; if (getsockname(fd, &addr.Address, &addrlen) == SOCKET_ERROR) { DBUS_SOCKET_SET_ERRNO (); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to resolve port \"%s:%s\": %s", host ? host : "*", port, _dbus_strerror_from_errno()); goto failed; } snprintf( portbuf, sizeof( portbuf ) - 1, "%d", addr.AddressIn.sin_port ); if (!_dbus_string_append(retport, portbuf)) { dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); goto failed; } /* Release current address list & redo lookup */ port = _dbus_string_get_const_data(retport); freeaddrinfo(ai); goto redo_lookup_with_port; } else { if (!_dbus_string_append(retport, port)) { dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); goto failed; } } } tmp = tmp->ai_next; } freeaddrinfo(ai); ai = NULL; if (!nlisten_fd) { _dbus_win_set_errno (WSAEADDRINUSE); dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to bind socket \"%s:%s\": %s", host ? host : "*", port, _dbus_strerror_from_errno ()); return -1; } sscanf(_dbus_string_get_const_data(retport), "%d", &port_num); for (i = 0 ; i < nlisten_fd ; i++) { _dbus_fd_set_close_on_exec (listen_fd[i]); if (!_dbus_set_fd_nonblocking (listen_fd[i], error)) { goto failed; } } *fds_p = listen_fd; return nlisten_fd; failed: if (ai) freeaddrinfo(ai); for (i = 0 ; i < nlisten_fd ; i++) closesocket (listen_fd[i]); dbus_free(listen_fd); return -1; } /** * Accepts a connection on a listening socket. * Handles EINTR for you. * * @param listen_fd the listen file descriptor * @returns the connection fd of the client, or -1 on error */ int _dbus_accept (int listen_fd) { int client_fd; retry: client_fd = accept (listen_fd, NULL, NULL); if (DBUS_SOCKET_IS_INVALID (client_fd)) { DBUS_SOCKET_SET_ERRNO (); if (errno == EINTR) goto retry; } _dbus_verbose ("client fd %d accepted\n", client_fd); return client_fd; } dbus_bool_t _dbus_send_credentials_socket (int handle, DBusError *error) { /* FIXME: for the session bus credentials shouldn't matter (?), but * for the system bus they are presumably essential. A rough outline * of a way to implement the credential transfer would be this: * * client waits to *read* a byte. * * server creates a named pipe with a random name, sends a byte * contining its length, and its name. * * client reads the name, connects to it (using Win32 API). * * server waits for connection to the named pipe, then calls * ImpersonateNamedPipeClient(), notes its now-current credentials, * calls RevertToSelf(), closes its handles to the named pipe, and * is done. (Maybe there is some other way to get the SID of a named * pipe client without having to use impersonation?) * * client closes its handles and is done. * * Ralf: Why not sending credentials over the given this connection ? * Using named pipes makes it impossible to be connected from a unix client. * */ int bytes_written; DBusString buf; _dbus_string_init_const_len (&buf, "\0", 1); again: bytes_written = _dbus_write_socket (handle, &buf, 0, 1 ); if (bytes_written < 0 && errno == EINTR) goto again; if (bytes_written < 0) { dbus_set_error (error, _dbus_error_from_errno (errno), "Failed to write credentials byte: %s", _dbus_strerror_from_errno ()); return FALSE; } else if (bytes_written == 0) { dbus_set_error (error, DBUS_ERROR_IO_ERROR, "wrote zero bytes writing credentials byte"); return FALSE; } else { _dbus_assert (bytes_written == 1); _dbus_verbose ("wrote 1 zero byte, credential sending isn't implemented yet\n"); return TRUE; } return TRUE; } /** * Reads a single byte which must be nul (an error occurs otherwise), * and reads unix credentials if available. Fills in pid/uid/gid with * -1 if no credentials are available. Return value indicates whether * a byte was read, not whether we got valid credentials. On some * systems, such as Linux, reading/writing the byte isn't actually * required, but we do it anyway just to avoid multiple codepaths. * * Fails if no byte is available, so you must select() first. * * The point of the byte is that on some systems we have to * use sendmsg()/recvmsg() to transmit credentials. * * @param client_fd the client file descriptor * @param credentials struct to fill with credentials of client * @param error location to store error code * @returns #TRUE on success */ dbus_bool_t _dbus_read_credentials_socket (int handle, DBusCredentials *credentials, DBusError *error) { int bytes_read = 0; DBusString buf; // could fail due too OOM if (_dbus_string_init(&buf)) { bytes_read = _dbus_read_socket(handle, &buf, 1 ); if (bytes_read > 0) _dbus_verbose("got one zero byte from server"); _dbus_string_free(&buf); } _dbus_credentials_add_from_current_process (credentials); _dbus_verbose("FIXME: get faked credentials from current process"); return TRUE; } /** * Checks to make sure the given directory is * private to the user * * @param dir the name of the directory * @param error error return * @returns #FALSE on failure **/ dbus_bool_t _dbus_check_dir_is_private_to_user (DBusString *dir, DBusError *error) { /* TODO */ _DBUS_ASSERT_ERROR_IS_CLEAR (error); return TRUE; } /** * Appends the given filename to the given directory. * * @todo it might be cute to collapse multiple '/' such as "foo//" * concat "//bar" * * @param dir the directory name * @param next_component the filename * @returns #TRUE on success */ dbus_bool_t _dbus_concat_dir_and_file (DBusString *dir, const DBusString *next_component) { dbus_bool_t dir_ends_in_slash; dbus_bool_t file_starts_with_slash; if (_dbus_string_get_length (dir) == 0 || _dbus_string_get_length (next_component) == 0) return TRUE; dir_ends_in_slash = ('/' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1) || '\\' == _dbus_string_get_byte (dir, _dbus_string_get_length (dir) - 1)); file_starts_with_slash = ('/' == _dbus_string_get_byte (next_component, 0) || '\\' == _dbus_string_get_byte (next_component, 0)); if (dir_ends_in_slash && file_starts_with_slash) { _dbus_string_shorten (dir, 1); } else if (!(dir_ends_in_slash || file_starts_with_slash)) { if (!_dbus_string_append_byte (dir, '\\')) return FALSE; } return _dbus_string_copy (next_component, 0, dir, _dbus_string_get_length (dir)); } /*---------------- DBusCredentials ----------------------------------*/ /** * Adds the credentials corresponding to the given username. * * @param credentials credentials to fill in * @param username the username * @returns #TRUE if the username existed and we got some credentials */ dbus_bool_t _dbus_credentials_add_from_user (DBusCredentials *credentials, const DBusString *username) { return _dbus_credentials_add_windows_sid (credentials, _dbus_string_get_const_data(username)); } /** * Adds the credentials of the current process to the * passed-in credentials object. * * @param credentials credentials to add to * @returns #FALSE if no memory; does not properly roll back on failure, so only some credentials may have been added */ dbus_bool_t _dbus_credentials_add_from_current_process (DBusCredentials *credentials) { dbus_bool_t retval = FALSE; char *sid = NULL; if (!_dbus_getsid(&sid)) goto failed; if (!_dbus_credentials_add_unix_pid(credentials, _dbus_getpid())) goto failed; if (!_dbus_credentials_add_windows_sid (credentials,sid)) goto failed; retval = TRUE; goto end; failed: retval = FALSE; end: if (sid) LocalFree(sid); return retval; } /** * Append to the string the identity we would like to have when we * authenticate, on UNIX this is the current process UID and on * Windows something else, probably a Windows SID string. No escaping * is required, that is done in dbus-auth.c. The username here * need not be anything human-readable, it can be the machine-readable * form i.e. a user id. * * @param str the string to append to * @returns #FALSE on no memory * @todo to which class belongs this */ dbus_bool_t _dbus_append_user_from_current_process (DBusString *str) { dbus_bool_t retval = FALSE; char *sid = NULL; if (!_dbus_getsid(&sid)) return FALSE; retval = _dbus_string_append (str,sid); LocalFree(sid); return retval; } /** * Gets our process ID * @returns process ID */ dbus_pid_t _dbus_getpid (void) { return GetCurrentProcessId (); } /** nanoseconds in a second */ #define NANOSECONDS_PER_SECOND 1000000000 /** microseconds in a second */ #define MICROSECONDS_PER_SECOND 1000000 /** milliseconds in a second */ #define MILLISECONDS_PER_SECOND 1000 /** nanoseconds in a millisecond */ #define NANOSECONDS_PER_MILLISECOND 1000000 /** microseconds in a millisecond */ #define MICROSECONDS_PER_MILLISECOND 1000 /** * Sleeps the given number of milliseconds. * @param milliseconds number of milliseconds */ void _dbus_sleep_milliseconds (int milliseconds) { Sleep (milliseconds); } /** * Get current time, as in gettimeofday(). Never uses the monotonic * clock. * * @param tv_sec return location for number of seconds * @param tv_usec return location for number of microseconds */ void _dbus_get_real_time (long *tv_sec, long *tv_usec) { FILETIME ft; dbus_uint64_t time64; GetSystemTimeAsFileTime (&ft); memcpy (&time64, &ft, sizeof (time64)); /* Convert from 100s of nanoseconds since 1601-01-01 * to Unix epoch. Yes, this is Y2038 unsafe. */ time64 -= DBUS_INT64_CONSTANT (116444736000000000); time64 /= 10; if (tv_sec) *tv_sec = time64 / 1000000; if (tv_usec) *tv_usec = time64 % 1000000; } /** * Get current time, as in gettimeofday(). Use the monotonic clock if * available, to avoid problems when the system time changes. * * @param tv_sec return location for number of seconds * @param tv_usec return location for number of microseconds */ void _dbus_get_monotonic_time (long *tv_sec, long *tv_usec) { /* no implementation yet, fall back to wall-clock time */ _dbus_get_real_time (tv_sec, tv_usec); } /** * signal (SIGPIPE, SIG_IGN); */ void _dbus_disable_sigpipe (void) { } /** * Creates a directory; succeeds if the directory * is created or already existed. * * @param filename directory filename * @param error initialized error object * @returns #TRUE on success */ dbus_bool_t _dbus_create_directory (const DBusString *filename, DBusError *error) { const char *filename_c; _DBUS_ASSERT_ERROR_IS_CLEAR (error); filename_c = _dbus_string_get_const_data (filename); if (!CreateDirectoryA (filename_c, NULL)) { if (GetLastError () == ERROR_ALREADY_EXISTS) return TRUE; dbus_set_error (error, DBUS_ERROR_FAILED, "Failed to create directory %s: %s\n", filename_c, _dbus_strerror_from_errno ()); return FALSE; } else return TRUE; } /** * Generates the given number of random bytes, * using the best mechanism we can come up with. * * @param str the string * @param n_bytes the number of random bytes to append to string * @returns #TRUE on success, #FALSE if no memory */ dbus_bool_t _dbus_generate_random_bytes (DBusString *str, int n_bytes) { int old_len; char *p; HCRYPTPROV hprov; old_len = _dbus_string_get_length (str); if (!_dbus_string_lengthen (str, n_bytes)) return FALSE; p = _dbus_string_get_data_len (str, old_len, n_bytes); if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) return FALSE; if (!CryptGenRandom (hprov, n_bytes, p)) { CryptReleaseContext (hprov, 0); return FALSE; } CryptReleaseContext (hprov, 0); return TRUE; } /** * Gets the temporary files directory by inspecting the environment variables * TMPDIR, TMP, and TEMP in that order. If none of those are set "/tmp" is returned * * @returns location of temp directory */ const char* _dbus_get_tmpdir(void) { static const char* tmpdir = NULL; static char buf[1000]; if (tmpdir == NULL) { char *last_slash; if (!GetTempPathA (sizeof (buf), buf)) { _dbus_warn ("GetTempPath failed\n"); _dbus_abort (); } /* Drop terminating backslash or slash */ last_slash = _mbsrchr (buf, '\\'); if (last_slash > buf && last_slash[1] == '\0') last_slash[0] = '\0'; last_slash = _mbsrchr (buf, '/'); if (last_slash > buf && last_slash[1] == '\0') last_slash[0] = '\0'; tmpdir = buf; } _dbus_assert(tmpdir != NULL); return tmpdir; } /** * Deletes the given file. * * @param filename the filename * @param error error location * * @returns #TRUE if unlink() succeeded */ dbus_bool_t _dbus_delete_file (const DBusString *filename, DBusError *error) { const char *filename_c; _DBUS_ASSERT_ERROR_IS_CLEAR (error); filename_c = _dbus_string_get_const_data (filename); if (DeleteFileA (filename_c) == 0) { dbus_set_error (error, DBUS_ERROR_FAILED, "Failed to delete file %s: %s\n", filename_c, _dbus_strerror_from_errno ()); return FALSE; } else return TRUE; } /* * replaces the term DBUS_PREFIX in configure_time_path by the * current dbus installation directory. On unix this function is a noop * * @param configure_time_path * @return real path */ const char * _dbus_replace_install_prefix (const char *configure_time_path) { #ifndef DBUS_PREFIX return configure_time_path; #else static char retval[1000]; static char runtime_prefix[1000]; int len = 1000; int i; if (!configure_time_path) return NULL; if ((!_dbus_get_install_root(runtime_prefix, len) || strncmp (configure_time_path, DBUS_PREFIX "/", strlen (DBUS_PREFIX) + 1))) { strcat (retval, configure_time_path); return retval; } strcpy (retval, runtime_prefix); strcat (retval, configure_time_path + strlen (DBUS_PREFIX) + 1); /* Somehow, in some situations, backslashes get collapsed in the string. * Since windows C library accepts both forward and backslashes as * path separators, convert all backslashes to forward slashes. */ for(i = 0; retval[i] != '\0'; i++) { if(retval[i] == '\\') retval[i] = '/'; } return retval; #endif } #if !defined (DBUS_DISABLE_ASSERTS) || defined(DBUS_BUILD_TESTS) #if defined(_MSC_VER) || defined(DBUS_WINCE) # ifdef BACKTRACES # undef BACKTRACES # endif #else # define BACKTRACES #endif #ifdef BACKTRACES /* * Backtrace Generator * * Copyright 2004 Eric Poech * Copyright 2004 Robert Shearman * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #define DPRINTF _dbus_warn #ifdef _MSC_VER #define BOOL int #define __i386__ #endif //#define MAKE_FUNCPTR(f) static typeof(f) * p##f //MAKE_FUNCPTR(StackWalk); //MAKE_FUNCPTR(SymGetModuleBase); //MAKE_FUNCPTR(SymFunctionTableAccess); //MAKE_FUNCPTR(SymInitialize); //MAKE_FUNCPTR(SymGetSymFromAddr); //MAKE_FUNCPTR(SymGetModuleInfo); static BOOL (WINAPI *pStackWalk)( DWORD MachineType, HANDLE hProcess, HANDLE hThread, LPSTACKFRAME StackFrame, PVOID ContextRecord, PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine, PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine, PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, PTRANSLATE_ADDRESS_ROUTINE TranslateAddress ); #ifdef _WIN64 static DWORD64 (WINAPI *pSymGetModuleBase)( HANDLE hProcess, DWORD64 dwAddr ); static PVOID (WINAPI *pSymFunctionTableAccess)( HANDLE hProcess, DWORD64 AddrBase ); #else static DWORD (WINAPI *pSymGetModuleBase)( HANDLE hProcess, DWORD dwAddr ); static PVOID (WINAPI *pSymFunctionTableAccess)( HANDLE hProcess, DWORD AddrBase ); #endif static BOOL (WINAPI *pSymInitialize)( HANDLE hProcess, PSTR UserSearchPath, BOOL fInvadeProcess ); static BOOL (WINAPI *pSymGetSymFromAddr)( HANDLE hProcess, DWORD Address, PDWORD Displacement, PIMAGEHLP_SYMBOL Symbol ); static BOOL (WINAPI *pSymGetModuleInfo)( HANDLE hProcess, DWORD dwAddr, PIMAGEHLP_MODULE ModuleInfo ); static DWORD (WINAPI *pSymSetOptions)( DWORD SymOptions ); static BOOL init_backtrace() { HMODULE hmodDbgHelp = LoadLibraryA("dbghelp"); /* #define GETFUNC(x) \ p##x = (typeof(x)*)GetProcAddress(hmodDbgHelp, #x); \ if (!p##x) \ { \ return FALSE; \ } */ // GETFUNC(StackWalk); // GETFUNC(SymGetModuleBase); // GETFUNC(SymFunctionTableAccess); // GETFUNC(SymInitialize); // GETFUNC(SymGetSymFromAddr); // GETFUNC(SymGetModuleInfo); #define FUNC(x) #x pStackWalk = (BOOL (WINAPI *)( DWORD MachineType, HANDLE hProcess, HANDLE hThread, LPSTACKFRAME StackFrame, PVOID ContextRecord, PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine, PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine, PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, PTRANSLATE_ADDRESS_ROUTINE TranslateAddress ))GetProcAddress (hmodDbgHelp, FUNC(StackWalk)); #ifdef _WIN64 pSymGetModuleBase=(DWORD64 (WINAPI *)( HANDLE hProcess, DWORD64 dwAddr ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase)); pSymFunctionTableAccess=(PVOID (WINAPI *)( HANDLE hProcess, DWORD64 AddrBase ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess)); #else pSymGetModuleBase=(DWORD (WINAPI *)( HANDLE hProcess, DWORD dwAddr ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleBase)); pSymFunctionTableAccess=(PVOID (WINAPI *)( HANDLE hProcess, DWORD AddrBase ))GetProcAddress (hmodDbgHelp, FUNC(SymFunctionTableAccess)); #endif pSymInitialize = (BOOL (WINAPI *)( HANDLE hProcess, PSTR UserSearchPath, BOOL fInvadeProcess ))GetProcAddress (hmodDbgHelp, FUNC(SymInitialize)); pSymGetSymFromAddr = (BOOL (WINAPI *)( HANDLE hProcess, DWORD Address, PDWORD Displacement, PIMAGEHLP_SYMBOL Symbol ))GetProcAddress (hmodDbgHelp, FUNC(SymGetSymFromAddr)); pSymGetModuleInfo = (BOOL (WINAPI *)( HANDLE hProcess, DWORD dwAddr, PIMAGEHLP_MODULE ModuleInfo ))GetProcAddress (hmodDbgHelp, FUNC(SymGetModuleInfo)); pSymSetOptions = (DWORD (WINAPI *)( DWORD SymOptions ))GetProcAddress (hmodDbgHelp, FUNC(SymSetOptions)); pSymSetOptions(SYMOPT_UNDNAME); pSymInitialize(GetCurrentProcess(), NULL, TRUE); return TRUE; } static void dump_backtrace_for_thread(HANDLE hThread) { STACKFRAME sf; CONTEXT context; DWORD dwImageType; if (!pStackWalk) if (!init_backtrace()) return; /* can't use this function for current thread as GetThreadContext * doesn't support getting context from current thread */ if (hThread == GetCurrentThread()) return; DPRINTF("Backtrace:\n"); _DBUS_ZERO(context); context.ContextFlags = CONTEXT_FULL; SuspendThread(hThread); if (!GetThreadContext(hThread, &context)) { DPRINTF("Couldn't get thread context (error %ld)\n", GetLastError()); ResumeThread(hThread); return; } _DBUS_ZERO(sf); #ifdef __i386__ sf.AddrFrame.Offset = context.Ebp; sf.AddrFrame.Mode = AddrModeFlat; sf.AddrPC.Offset = context.Eip; sf.AddrPC.Mode = AddrModeFlat; dwImageType = IMAGE_FILE_MACHINE_I386; #elif _M_X64 dwImageType = IMAGE_FILE_MACHINE_AMD64; sf.AddrPC.Offset = context.Rip; sf.AddrPC.Mode = AddrModeFlat; sf.AddrFrame.Offset = context.Rsp; sf.AddrFrame.Mode = AddrModeFlat; sf.AddrStack.Offset = context.Rsp; sf.AddrStack.Mode = AddrModeFlat; #elif _M_IA64 dwImageType = IMAGE_FILE_MACHINE_IA64; sf.AddrPC.Offset = context.StIIP; sf.AddrPC.Mode = AddrModeFlat; sf.AddrFrame.Offset = context.IntSp; sf.AddrFrame.Mode = AddrModeFlat; sf.AddrBStore.Offset= context.RsBSP; sf.AddrBStore.Mode = AddrModeFlat; sf.AddrStack.Offset = context.IntSp; sf.AddrStack.Mode = AddrModeFlat; #else # error You need to fill in the STACKFRAME structure for your architecture #endif while (pStackWalk(dwImageType, GetCurrentProcess(), hThread, &sf, &context, NULL, pSymFunctionTableAccess, pSymGetModuleBase, NULL)) { BYTE buffer[256]; IMAGEHLP_SYMBOL * pSymbol = (IMAGEHLP_SYMBOL *)buffer; DWORD dwDisplacement; pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL); pSymbol->MaxNameLength = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL) + 1; if (!pSymGetSymFromAddr(GetCurrentProcess(), sf.AddrPC.Offset, &dwDisplacement, pSymbol)) { IMAGEHLP_MODULE ModuleInfo; ModuleInfo.SizeOfStruct = sizeof(ModuleInfo); if (!pSymGetModuleInfo(GetCurrentProcess(), sf.AddrPC.Offset, &ModuleInfo)) DPRINTF("1\t%p\n", (void*)sf.AddrPC.Offset); else DPRINTF("2\t%s+0x%lx\n", ModuleInfo.ImageName, sf.AddrPC.Offset - ModuleInfo.BaseOfImage); } else if (dwDisplacement) DPRINTF("3\t%s+0x%lx\n", pSymbol->Name, dwDisplacement); else DPRINTF("4\t%s\n", pSymbol->Name); } ResumeThread(hThread); } static DWORD WINAPI dump_thread_proc(LPVOID lpParameter) { dump_backtrace_for_thread((HANDLE)lpParameter); return 0; } /* cannot get valid context from current thread, so we have to execute * backtrace from another thread */ static void dump_backtrace() { HANDLE hCurrentThread; HANDLE hThread; DWORD dwThreadId; DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), GetCurrentProcess(), &hCurrentThread, 0, FALSE, DUPLICATE_SAME_ACCESS); hThread = CreateThread(NULL, 0, dump_thread_proc, (LPVOID)hCurrentThread, 0, &dwThreadId); WaitForSingleObject(hThread, INFINITE); CloseHandle(hThread); CloseHandle(hCurrentThread); } #endif #endif /* asserts or tests enabled */ #ifdef BACKTRACES void _dbus_print_backtrace(void) { init_backtrace(); dump_backtrace(); } #else void _dbus_print_backtrace(void) { _dbus_verbose (" D-Bus not compiled with backtrace support\n"); } #endif static dbus_uint32_t fromAscii(char ascii) { if(ascii >= '0' && ascii <= '9') return ascii - '0'; if(ascii >= 'A' && ascii <= 'F') return ascii - 'A' + 10; if(ascii >= 'a' && ascii <= 'f') return ascii - 'a' + 10; return 0; } dbus_bool_t _dbus_read_local_machine_uuid (DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error) { #ifdef DBUS_WINCE return TRUE; // TODO #else HW_PROFILE_INFOA info; char *lpc = &info.szHwProfileGuid[0]; dbus_uint32_t u; // the hw-profile guid lives long enough if(!GetCurrentHwProfileA(&info)) { dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); // FIXME return FALSE; } // Form: {12340001-4980-1920-6788-123456789012} lpc++; // 12340001 u = ((fromAscii(lpc[0]) << 0) | (fromAscii(lpc[1]) << 4) | (fromAscii(lpc[2]) << 8) | (fromAscii(lpc[3]) << 12) | (fromAscii(lpc[4]) << 16) | (fromAscii(lpc[5]) << 20) | (fromAscii(lpc[6]) << 24) | (fromAscii(lpc[7]) << 28)); machine_id->as_uint32s[0] = u; lpc += 9; // 4980-1920 u = ((fromAscii(lpc[0]) << 0) | (fromAscii(lpc[1]) << 4) | (fromAscii(lpc[2]) << 8) | (fromAscii(lpc[3]) << 12) | (fromAscii(lpc[5]) << 16) | (fromAscii(lpc[6]) << 20) | (fromAscii(lpc[7]) << 24) | (fromAscii(lpc[8]) << 28)); machine_id->as_uint32s[1] = u; lpc += 10; // 6788-1234 u = ((fromAscii(lpc[0]) << 0) | (fromAscii(lpc[1]) << 4) | (fromAscii(lpc[2]) << 8) | (fromAscii(lpc[3]) << 12) | (fromAscii(lpc[5]) << 16) | (fromAscii(lpc[6]) << 20) | (fromAscii(lpc[7]) << 24) | (fromAscii(lpc[8]) << 28)); machine_id->as_uint32s[2] = u; lpc += 9; // 56789012 u = ((fromAscii(lpc[0]) << 0) | (fromAscii(lpc[1]) << 4) | (fromAscii(lpc[2]) << 8) | (fromAscii(lpc[3]) << 12) | (fromAscii(lpc[4]) << 16) | (fromAscii(lpc[5]) << 20) | (fromAscii(lpc[6]) << 24) | (fromAscii(lpc[7]) << 28)); machine_id->as_uint32s[3] = u; #endif return TRUE; } static HANDLE _dbus_global_lock (const char *mutexname) { HANDLE mutex; DWORD gotMutex; mutex = CreateMutexA( NULL, FALSE, mutexname ); if( !mutex ) { return FALSE; } gotMutex = WaitForSingleObject( mutex, INFINITE ); switch( gotMutex ) { case WAIT_ABANDONED: ReleaseMutex (mutex); CloseHandle (mutex); return 0; case WAIT_FAILED: case WAIT_TIMEOUT: return 0; } return mutex; } static void _dbus_global_unlock (HANDLE mutex) { ReleaseMutex (mutex); CloseHandle (mutex); } // for proper cleanup in dbus-daemon static HANDLE hDBusDaemonMutex = NULL; static HANDLE hDBusSharedMem = NULL; // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs static const char *cUniqueDBusInitMutex = "UniqueDBusInitMutex"; // sync _dbus_get_autolaunch_address static const char *cDBusAutolaunchMutex = "DBusAutolaunchMutex"; // mutex to determine if dbus-daemon is already started (per user) static const char *cDBusDaemonMutex = "DBusDaemonMutex"; // named shm for dbus adress info (per user) static const char *cDBusDaemonAddressInfo = "DBusDaemonAddressInfo"; static dbus_bool_t _dbus_get_install_root_as_hash(DBusString *out) { DBusString install_path; char path[MAX_PATH*2]; int path_size = sizeof(path); if (!_dbus_get_install_root(path,path_size)) return FALSE; _dbus_string_init(&install_path); _dbus_string_append(&install_path,path); _dbus_string_init(out); _dbus_string_tolower_ascii(&install_path,0,_dbus_string_get_length(&install_path)); if (!_dbus_sha_compute (&install_path, out)) return FALSE; return TRUE; } static dbus_bool_t _dbus_get_address_string (DBusString *out, const char *basestring, const char *scope) { _dbus_string_init(out); _dbus_string_append(out,basestring); if (!scope) { return TRUE; } else if (strcmp(scope,"*install-path") == 0 // for 1.3 compatibility || strcmp(scope,"install-path") == 0) { DBusString temp; if (!_dbus_get_install_root_as_hash(&temp)) { _dbus_string_free(out); return FALSE; } _dbus_string_append(out,"-"); _dbus_string_append(out,_dbus_string_get_const_data(&temp)); _dbus_string_free(&temp); } else if (strcmp(scope,"*user") == 0) { _dbus_string_append(out,"-"); if (!_dbus_append_user_from_current_process(out)) { _dbus_string_free(out); return FALSE; } } else if (strlen(scope) > 0) { _dbus_string_append(out,"-"); _dbus_string_append(out,scope); return TRUE; } return TRUE; } static dbus_bool_t _dbus_get_shm_name (DBusString *out,const char *scope) { return _dbus_get_address_string (out,cDBusDaemonAddressInfo,scope); } static dbus_bool_t _dbus_get_mutex_name (DBusString *out,const char *scope) { return _dbus_get_address_string (out,cDBusDaemonMutex,scope); } dbus_bool_t _dbus_daemon_is_session_bus_address_published (const char *scope) { HANDLE lock; DBusString mutex_name; if (!_dbus_get_mutex_name(&mutex_name,scope)) { _dbus_string_free( &mutex_name ); return FALSE; } if (hDBusDaemonMutex) return TRUE; // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs lock = _dbus_global_lock( cUniqueDBusInitMutex ); // we use CreateMutex instead of OpenMutex because of possible race conditions, // see http://msdn.microsoft.com/en-us/library/ms684315%28VS.85%29.aspx hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) ); /* The client uses mutex ownership to detect a running server, so the server should do so too. Fortunally the client deletes the mutex in the lock protected area, so checking presence will work too. */ _dbus_global_unlock( lock ); _dbus_string_free( &mutex_name ); if (hDBusDaemonMutex == NULL) return FALSE; if (GetLastError() == ERROR_ALREADY_EXISTS) { CloseHandle(hDBusDaemonMutex); hDBusDaemonMutex = NULL; return TRUE; } // mutex wasn't created before, so return false. // We leave the mutex name allocated for later reusage // in _dbus_daemon_publish_session_bus_address. return FALSE; } dbus_bool_t _dbus_daemon_publish_session_bus_address (const char* address, const char *scope) { HANDLE lock; char *shared_addr = NULL; DBusString shm_name; DBusString mutex_name; _dbus_assert (address); if (!_dbus_get_mutex_name(&mutex_name,scope)) { _dbus_string_free( &mutex_name ); return FALSE; } // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs lock = _dbus_global_lock( cUniqueDBusInitMutex ); if (!hDBusDaemonMutex) { hDBusDaemonMutex = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) ); } _dbus_string_free( &mutex_name ); // acquire the mutex if (WaitForSingleObject( hDBusDaemonMutex, 10 ) != WAIT_OBJECT_0) { _dbus_global_unlock( lock ); CloseHandle( hDBusDaemonMutex ); return FALSE; } if (!_dbus_get_shm_name(&shm_name,scope)) { _dbus_string_free( &shm_name ); _dbus_global_unlock( lock ); return FALSE; } // create shm hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, strlen( address ) + 1, _dbus_string_get_const_data(&shm_name) ); _dbus_assert( hDBusSharedMem ); shared_addr = MapViewOfFile( hDBusSharedMem, FILE_MAP_WRITE, 0, 0, 0 ); _dbus_assert (shared_addr); strcpy( shared_addr, address); // cleanup UnmapViewOfFile( shared_addr ); _dbus_global_unlock( lock ); _dbus_verbose( "published session bus address at %s\n",_dbus_string_get_const_data (&shm_name) ); _dbus_string_free( &shm_name ); return TRUE; } void _dbus_daemon_unpublish_session_bus_address (void) { HANDLE lock; // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs lock = _dbus_global_lock( cUniqueDBusInitMutex ); CloseHandle( hDBusSharedMem ); hDBusSharedMem = NULL; ReleaseMutex( hDBusDaemonMutex ); CloseHandle( hDBusDaemonMutex ); hDBusDaemonMutex = NULL; _dbus_global_unlock( lock ); } static dbus_bool_t _dbus_get_autolaunch_shm (DBusString *address, DBusString *shm_name) { HANDLE sharedMem; char *shared_addr; int i; // read shm for(i=0;i<20;++i) { // we know that dbus-daemon is available, so we wait until shm is available sharedMem = OpenFileMappingA( FILE_MAP_READ, FALSE, _dbus_string_get_const_data(shm_name)); if( sharedMem == 0 ) Sleep( 100 ); if ( sharedMem != 0) break; } if( sharedMem == 0 ) return FALSE; shared_addr = MapViewOfFile( sharedMem, FILE_MAP_READ, 0, 0, 0 ); if( !shared_addr ) return FALSE; _dbus_string_init( address ); _dbus_string_append( address, shared_addr ); // cleanup UnmapViewOfFile( shared_addr ); CloseHandle( sharedMem ); return TRUE; } static dbus_bool_t _dbus_daemon_already_runs (DBusString *address, DBusString *shm_name, const char *scope) { HANDLE lock; HANDLE daemon; DBusString mutex_name; dbus_bool_t bRet = TRUE; if (!_dbus_get_mutex_name(&mutex_name,scope)) { _dbus_string_free( &mutex_name ); return FALSE; } // sync _dbus_daemon_publish_session_bus_address, _dbus_daemon_unpublish_session_bus_address and _dbus_daemon_already_runs lock = _dbus_global_lock( cUniqueDBusInitMutex ); // do checks daemon = CreateMutexA( NULL, FALSE, _dbus_string_get_const_data(&mutex_name) ); if(WaitForSingleObject( daemon, 10 ) != WAIT_TIMEOUT) { ReleaseMutex (daemon); CloseHandle (daemon); _dbus_global_unlock( lock ); _dbus_string_free( &mutex_name ); return FALSE; } // read shm bRet = _dbus_get_autolaunch_shm( address, shm_name ); // cleanup CloseHandle ( daemon ); _dbus_global_unlock( lock ); _dbus_string_free( &mutex_name ); return bRet; } dbus_bool_t _dbus_get_autolaunch_address (const char *scope, DBusString *address, DBusError *error) { HANDLE mutex; STARTUPINFOA si; PROCESS_INFORMATION pi; dbus_bool_t retval = FALSE; LPSTR lpFile; char dbus_exe_path[MAX_PATH]; char dbus_args[MAX_PATH * 2]; const char * daemon_name = DBUS_DAEMON_NAME ".exe"; DBusString shm_name; _DBUS_ASSERT_ERROR_IS_CLEAR (error); if (!_dbus_get_shm_name(&shm_name,scope)) { dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not determine shm name"); return FALSE; } mutex = _dbus_global_lock ( cDBusAutolaunchMutex ); if (_dbus_daemon_already_runs(address,&shm_name,scope)) { _dbus_verbose( "found running dbus daemon at %s\n", _dbus_string_get_const_data (&shm_name) ); retval = TRUE; goto out; } if (!SearchPathA(NULL, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile)) { // Look in directory containing dbus shared library HMODULE hmod; char dbus_module_path[MAX_PATH]; DWORD rc; _dbus_verbose( "did not found dbus daemon executable on default search path, " "trying path where dbus shared library is located"); hmod = _dbus_win_get_dll_hmodule(); rc = GetModuleFileNameA(hmod, dbus_module_path, sizeof(dbus_module_path)); if (rc <= 0) { dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not retrieve dbus shared library file name"); retval = FALSE; goto out; } else { char *ext_idx = strrchr(dbus_module_path, '\\'); if (ext_idx) *ext_idx = '\0'; if (!SearchPathA(dbus_module_path, daemon_name, NULL, sizeof(dbus_exe_path), dbus_exe_path, &lpFile)) { dbus_set_error_const (error, DBUS_ERROR_FAILED, "could not find dbus-daemon executable"); retval = FALSE; printf ("please add the path to %s to your PATH environment variable\n", daemon_name); printf ("or start the daemon manually\n\n"); goto out; } _dbus_verbose( "found dbus daemon executable at %s",dbus_module_path); } } // Create process ZeroMemory( &si, sizeof(si) ); si.cb = sizeof(si); ZeroMemory( &pi, sizeof(pi) ); _snprintf(dbus_args, sizeof(dbus_args) - 1, "\"%s\" %s", dbus_exe_path, " --session"); // argv[i] = "--config-file=bus\\session.conf"; // printf("create process \"%s\" %s\n", dbus_exe_path, dbus_args); if(CreateProcessA(dbus_exe_path, dbus_args, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi)) { CloseHandle (pi.hThread); CloseHandle (pi.hProcess); retval = _dbus_get_autolaunch_shm( address, &shm_name ); if (retval == FALSE) dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to get autolaunch address from launched dbus-daemon"); } else { dbus_set_error_const (error, DBUS_ERROR_FAILED, "Failed to launch dbus-daemon"); retval = FALSE; } out: if (retval) _DBUS_ASSERT_ERROR_IS_CLEAR (error); else _DBUS_ASSERT_ERROR_IS_SET (error); _dbus_global_unlock (mutex); return retval; } /** Makes the file readable by every user in the system. * * @param filename the filename * @param error error location * @returns #TRUE if the file's permissions could be changed. */ dbus_bool_t _dbus_make_file_world_readable(const DBusString *filename, DBusError *error) { // TODO return TRUE; } /** * return the relocated DATADIR * * @returns relocated DATADIR static string */ static const char * _dbus_windows_get_datadir (void) { return _dbus_replace_install_prefix(DBUS_DATADIR); } #undef DBUS_DATADIR #define DBUS_DATADIR _dbus_windows_get_datadir () #define DBUS_STANDARD_SESSION_SERVICEDIR "/dbus-1/services" #define DBUS_STANDARD_SYSTEM_SERVICEDIR "/dbus-1/system-services" /** * Returns the standard directories for a session bus to look for service * activation files * * On Windows this should be data directories: * * %CommonProgramFiles%/dbus * * and * * relocated DBUS_DATADIR * * @param dirs the directory list we are returning * @returns #FALSE on OOM */ dbus_bool_t _dbus_get_standard_session_servicedirs (DBusList **dirs) { const char *common_progs; DBusString servicedir_path; if (!_dbus_string_init (&servicedir_path)) return FALSE; #ifdef DBUS_WINCE { /* On Windows CE, we adjust datadir dynamically to installation location. */ const char *data_dir = _dbus_getenv ("DBUS_DATADIR"); if (data_dir != NULL) { if (!_dbus_string_append (&servicedir_path, data_dir)) goto oom; if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) goto oom; } } #else /* the code for accessing services requires absolute base pathes in case DBUS_DATADIR is relative make it absolute */ #ifdef DBUS_WIN { DBusString p; _dbus_string_init_const (&p, DBUS_DATADIR); if (!_dbus_path_is_absolute (&p)) { char install_root[1000]; if (_dbus_get_install_root (install_root, sizeof(install_root))) if (!_dbus_string_append (&servicedir_path, install_root)) goto oom; } } #endif if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR)) goto oom; if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) goto oom; #endif common_progs = _dbus_getenv ("CommonProgramFiles"); if (common_progs != NULL) { if (!_dbus_string_append (&servicedir_path, common_progs)) goto oom; if (!_dbus_string_append (&servicedir_path, _DBUS_PATH_SEPARATOR)) goto oom; } if (!_dbus_split_paths_and_append (&servicedir_path, DBUS_STANDARD_SESSION_SERVICEDIR, dirs)) goto oom; _dbus_string_free (&servicedir_path); return TRUE; oom: _dbus_string_free (&servicedir_path); return FALSE; } /** * Returns the standard directories for a system bus to look for service * activation files * * On UNIX this should be the standard xdg freedesktop.org data directories: * * XDG_DATA_DIRS=${XDG_DATA_DIRS-/usr/local/share:/usr/share} * * and * * DBUS_DATADIR * * On Windows there is no system bus and this function can return nothing. * * @param dirs the directory list we are returning * @returns #FALSE on OOM */ dbus_bool_t _dbus_get_standard_system_servicedirs (DBusList **dirs) { *dirs = NULL; return TRUE; } _DBUS_DEFINE_GLOBAL_LOCK (atomic); /** * Atomically increments an integer * * @param atomic pointer to the integer to increment * @returns the value before incrementing * */ dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic) { // +/- 1 is needed here! // no volatile argument with mingw return InterlockedIncrement (&atomic->value) - 1; } /** * Atomically decrement an integer * * @param atomic pointer to the integer to decrement * @returns the value before decrementing * */ dbus_int32_t _dbus_atomic_dec (DBusAtomic *atomic) { // +/- 1 is needed here! // no volatile argument with mingw return InterlockedDecrement (&atomic->value) + 1; } /** * Atomically get the value of an integer. It may change at any time * thereafter, so this is mostly only useful for assertions. * * @param atomic pointer to the integer to get * @returns the value at this moment */ dbus_int32_t _dbus_atomic_get (DBusAtomic *atomic) { /* this is what GLib does, hopefully it's right... */ MemoryBarrier (); return atomic->value; } /** * Called when the bus daemon is signaled to reload its configuration; any * caches should be nuked. Of course any caches that need explicit reload * are probably broken, but c'est la vie. * * */ void _dbus_flush_caches (void) { } /** * See if errno is EAGAIN or EWOULDBLOCK (this has to be done differently * for Winsock so is abstracted) * * @returns #TRUE if errno == EAGAIN or errno == EWOULDBLOCK */ dbus_bool_t _dbus_get_is_errno_eagain_or_ewouldblock (void) { return errno == WSAEWOULDBLOCK; } /** * return the absolute path of the dbus installation * * @param s buffer for installation path * @param len length of buffer * @returns #FALSE on failure */ dbus_bool_t _dbus_get_install_root(char *prefix, int len) { //To find the prefix, we cut the filename and also \bin\ if present DWORD pathLength; char *lastSlash; SetLastError( 0 ); pathLength = GetModuleFileNameA(_dbus_win_get_dll_hmodule(), prefix, len); if ( pathLength == 0 || GetLastError() != 0 ) { *prefix = '\0'; return FALSE; } lastSlash = _mbsrchr(prefix, '\\'); if (lastSlash == NULL) { *prefix = '\0'; return FALSE; } //cut off binary name lastSlash[1] = 0; //cut possible "\\bin" //this fails if we are in a double-byte system codepage and the //folder's name happens to end with the *bytes* //"\\bin"... (I.e. the second byte of some Han character and then //the Latin "bin", but that is not likely I think... if (lastSlash - prefix >= 4 && strnicmp(lastSlash - 4, "\\bin", 4) == 0) lastSlash[-3] = 0; else if (lastSlash - prefix >= 10 && strnicmp(lastSlash - 10, "\\bin\\debug", 10) == 0) lastSlash[-9] = 0; else if (lastSlash - prefix >= 12 && strnicmp(lastSlash - 12, "\\bin\\release", 12) == 0) lastSlash[-11] = 0; return TRUE; } /** find config file either from installation or build root according to the following path layout install-root/ bin/dbus-daemon[d].exe etc/.conf *or* etc/dbus-1/.conf (the former above is what dbus4win uses, the latter above is what a "normal" Unix-style "make install" uses) build-root/ bin/dbus-daemon[d].exe bus/.conf */ dbus_bool_t _dbus_get_config_file_name(DBusString *config_file, char *s) { char path[MAX_PATH*2]; int path_size = sizeof(path); if (!_dbus_get_install_root(path,path_size)) return FALSE; if(strlen(s) + 4 + strlen(path) > sizeof(path)-2) return FALSE; strcat(path,"etc\\"); strcat(path,s); if (_dbus_file_exists(path)) { // find path from executable if (!_dbus_string_append (config_file, path)) return FALSE; } else { if (!_dbus_get_install_root(path,path_size)) return FALSE; if(strlen(s) + 11 + strlen(path) > sizeof(path)-2) return FALSE; strcat(path,"etc\\dbus-1\\"); strcat(path,s); if (_dbus_file_exists(path)) { if (!_dbus_string_append (config_file, path)) return FALSE; } else { if (!_dbus_get_install_root(path,path_size)) return FALSE; if(strlen(s) + 4 + strlen(path) > sizeof(path)-2) return FALSE; strcat(path,"bus\\"); strcat(path,s); if (_dbus_file_exists(path)) { if (!_dbus_string_append (config_file, path)) return FALSE; } } } return TRUE; } /** * Append the absolute path of the system.conf file * (there is no system bus on Windows so this can just * return FALSE and print a warning or something) * * @param str the string to append to * @returns #FALSE if no memory */ dbus_bool_t _dbus_append_system_config_file (DBusString *str) { return _dbus_get_config_file_name(str, "system.conf"); } /** * Append the absolute path of the session.conf file. * * @param str the string to append to * @returns #FALSE if no memory */ dbus_bool_t _dbus_append_session_config_file (DBusString *str) { return _dbus_get_config_file_name(str, "session.conf"); } /* See comment in dbus-sysdeps-unix.c */ dbus_bool_t _dbus_lookup_session_address (dbus_bool_t *supported, DBusString *address, DBusError *error) { /* Probably fill this in with something based on COM? */ *supported = FALSE; return TRUE; } /** * Appends the directory in which a keyring for the given credentials * should be stored. The credentials should have either a Windows or * UNIX user in them. The directory should be an absolute path. * * On UNIX the directory is ~/.dbus-keyrings while on Windows it should probably * be something else, since the dotfile convention is not normal on Windows. * * @param directory string to append directory to * @param credentials credentials the directory should be for * * @returns #FALSE on no memory */ dbus_bool_t _dbus_append_keyring_directory_for_credentials (DBusString *directory, DBusCredentials *credentials) { DBusString homedir; DBusString dotdir; const char *homepath; const char *homedrive; _dbus_assert (credentials != NULL); _dbus_assert (!_dbus_credentials_are_anonymous (credentials)); if (!_dbus_string_init (&homedir)) return FALSE; homedrive = _dbus_getenv("HOMEDRIVE"); if (homedrive != NULL && *homedrive != '\0') { _dbus_string_append(&homedir,homedrive); } homepath = _dbus_getenv("HOMEPATH"); if (homepath != NULL && *homepath != '\0') { _dbus_string_append(&homedir,homepath); } #ifdef DBUS_BUILD_TESTS { const char *override; override = _dbus_getenv ("DBUS_TEST_HOMEDIR"); if (override != NULL && *override != '\0') { _dbus_string_set_length (&homedir, 0); if (!_dbus_string_append (&homedir, override)) goto failed; _dbus_verbose ("Using fake homedir for testing: %s\n", _dbus_string_get_const_data (&homedir)); } else { static dbus_bool_t already_warned = FALSE; if (!already_warned) { _dbus_warn ("Using your real home directory for testing, set DBUS_TEST_HOMEDIR to avoid\n"); already_warned = TRUE; } } } #endif #ifdef DBUS_WINCE /* It's not possible to create a .something directory in Windows CE using the file explorer. */ #define KEYRING_DIR "dbus-keyrings" #else #define KEYRING_DIR ".dbus-keyrings" #endif _dbus_string_init_const (&dotdir, KEYRING_DIR); if (!_dbus_concat_dir_and_file (&homedir, &dotdir)) goto failed; if (!_dbus_string_copy (&homedir, 0, directory, _dbus_string_get_length (directory))) { goto failed; } _dbus_string_free (&homedir); return TRUE; failed: _dbus_string_free (&homedir); return FALSE; } /** Checks if a file exists * * @param file full path to the file * @returns #TRUE if file exists */ dbus_bool_t _dbus_file_exists (const char *file) { DWORD attributes = GetFileAttributesA (file); if (attributes != INVALID_FILE_ATTRIBUTES && GetLastError() != ERROR_PATH_NOT_FOUND) return TRUE; else return FALSE; } /** * A wrapper around strerror() because some platforms * may be lame and not have strerror(). * * @param error_number errno. * @returns error description. */ const char* _dbus_strerror (int error_number) { #ifdef DBUS_WINCE // TODO return "unknown"; #else const char *msg; switch (error_number) { case WSAEINTR: return "Interrupted function call"; case WSAEACCES: return "Permission denied"; case WSAEFAULT: return "Bad address"; case WSAEINVAL: return "Invalid argument"; case WSAEMFILE: return "Too many open files"; case WSAEWOULDBLOCK: return "Resource temporarily unavailable"; case WSAEINPROGRESS: return "Operation now in progress"; case WSAEALREADY: return "Operation already in progress"; case WSAENOTSOCK: return "Socket operation on nonsocket"; case WSAEDESTADDRREQ: return "Destination address required"; case WSAEMSGSIZE: return "Message too long"; case WSAEPROTOTYPE: return "Protocol wrong type for socket"; case WSAENOPROTOOPT: return "Bad protocol option"; case WSAEPROTONOSUPPORT: return "Protocol not supported"; case WSAESOCKTNOSUPPORT: return "Socket type not supported"; case WSAEOPNOTSUPP: return "Operation not supported"; case WSAEPFNOSUPPORT: return "Protocol family not supported"; case WSAEAFNOSUPPORT: return "Address family not supported by protocol family"; case WSAEADDRINUSE: return "Address already in use"; case WSAEADDRNOTAVAIL: return "Cannot assign requested address"; case WSAENETDOWN: return "Network is down"; case WSAENETUNREACH: return "Network is unreachable"; case WSAENETRESET: return "Network dropped connection on reset"; case WSAECONNABORTED: return "Software caused connection abort"; case WSAECONNRESET: return "Connection reset by peer"; case WSAENOBUFS: return "No buffer space available"; case WSAEISCONN: return "Socket is already connected"; case WSAENOTCONN: return "Socket is not connected"; case WSAESHUTDOWN: return "Cannot send after socket shutdown"; case WSAETIMEDOUT: return "Connection timed out"; case WSAECONNREFUSED: return "Connection refused"; case WSAEHOSTDOWN: return "Host is down"; case WSAEHOSTUNREACH: return "No route to host"; case WSAEPROCLIM: return "Too many processes"; case WSAEDISCON: return "Graceful shutdown in progress"; case WSATYPE_NOT_FOUND: return "Class type not found"; case WSAHOST_NOT_FOUND: return "Host not found"; case WSATRY_AGAIN: return "Nonauthoritative host not found"; case WSANO_RECOVERY: return "This is a nonrecoverable error"; case WSANO_DATA: return "Valid name, no data record of requested type"; case WSA_INVALID_HANDLE: return "Specified event object handle is invalid"; case WSA_INVALID_PARAMETER: return "One or more parameters are invalid"; case WSA_IO_INCOMPLETE: return "Overlapped I/O event object not in signaled state"; case WSA_IO_PENDING: return "Overlapped operations will complete later"; case WSA_NOT_ENOUGH_MEMORY: return "Insufficient memory available"; case WSA_OPERATION_ABORTED: return "Overlapped operation aborted"; #ifdef WSAINVALIDPROCTABLE case WSAINVALIDPROCTABLE: return "Invalid procedure table from service provider"; #endif #ifdef WSAINVALIDPROVIDER case WSAINVALIDPROVIDER: return "Invalid service provider version number"; #endif #ifdef WSAPROVIDERFAILEDINIT case WSAPROVIDERFAILEDINIT: return "Unable to initialize a service provider"; #endif case WSASYSCALLFAILURE: return "System call failure"; } msg = strerror (error_number); if (msg == NULL) msg = "unknown"; return msg; #endif //DBUS_WINCE } /** * Assigns an error name and message corresponding to a Win32 error * code to a DBusError. Does nothing if error is #NULL. * * @param error the error. * @param code the Win32 error code */ void _dbus_win_set_error_from_win_error (DBusError *error, int code) { char *msg; /* As we want the English message, use the A API */ FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, NULL, code, MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US), (LPSTR) &msg, 0, NULL); if (msg) { char *msg_copy; msg_copy = dbus_malloc (strlen (msg)); strcpy (msg_copy, msg); LocalFree (msg); dbus_set_error (error, "win32.error", "%s", msg_copy); } else dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code); } void _dbus_win_warn_win_error (const char *message, int code) { DBusError error; dbus_error_init (&error); _dbus_win_set_error_from_win_error (&error, code); _dbus_warn ("%s: %s\n", message, error.message); dbus_error_free (&error); } /** * Removes a directory; Directory must be empty * * @param filename directory filename * @param error initialized error object * @returns #TRUE on success */ dbus_bool_t _dbus_delete_directory (const DBusString *filename, DBusError *error) { const char *filename_c; _DBUS_ASSERT_ERROR_IS_CLEAR (error); filename_c = _dbus_string_get_const_data (filename); if (RemoveDirectoryA (filename_c) == 0) { char *emsg = _dbus_win_error_string (GetLastError ()); dbus_set_error (error, _dbus_win_error_from_last_error (), "Failed to remove directory %s: %s", filename_c, emsg); _dbus_win_free_error_string (emsg); return FALSE; } return TRUE; } /** * Checks whether the filename is an absolute path * * @param filename the filename * @returns #TRUE if an absolute path */ dbus_bool_t _dbus_path_is_absolute (const DBusString *filename) { if (_dbus_string_get_length (filename) > 0) return _dbus_string_get_byte (filename, 1) == ':' || _dbus_string_get_byte (filename, 0) == '\\' || _dbus_string_get_byte (filename, 0) == '/'; else return FALSE; } /** @} end of sysdeps-win */ /* tests in dbus-sysdeps-util.c */