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/* -*- 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 K├╝mmel <syntheticpp@gmx.net>
* Copyright (C) 2006 Christian Ehrlicher <ch.ehrlicher@gmx.de>
* Copyright (C) 2006-2010 Ralf Habacker <ralf.habacker@freenet.de>
*
* 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 <config.h>
#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 <windows.h>
#include <ws2tcpip.h>
#include <wincrypt.h>
/* Declarations missing in mingw's headers */
extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid);
extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid);
#include <stdio.h>
#include <string.h>
#if HAVE_ERRNO_H
#include <errno.h>
#endif
#ifndef DBUS_WINCE
#include <mbstring.h>
#include <sys/stat.h>
#include <sys/types.h>
#endif
#ifdef HAVE_WS2TCPIP_H
/* getaddrinfo for Windows CE (and Windows). */
#include <ws2tcpip.h>
#endif
#ifdef HAVE_WSPIAPI_H
// needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo)
#ifdef __GNUC__
#define _inline
#include "wspiapi.h"
#else
#include <wspiapi.h>
#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 <winver.h>
#include <imagehlp.h>
#include <stdio.h>
#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;