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nest-open-source / manifest_repos / dbus / 43c6348542b72e8edfee011a4c17a3f3dee0c63a / . / dbus / dbus-sysdeps-win.c
blob: 0deedeafaef945113a4c3ef727e7cd004e2dda2a [file] [log] [blame]
/* -*- 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 <syntheticpp@gmx.net>
* Copyright (C) 2006 Christian Ehrlicher <ch.ehrlicher@gmx.de>
* Copyright (C) 2006-2013 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 <wincrypt.h>
#include <iphlpapi.h>
/* Declarations missing in mingw's and windows sdk 7.0 headers */
extern BOOL WINAPI ConvertStringSidToSidA (LPCSTR StringSid, PSID *Sid);
extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid);
#include <stdio.h>
#include <stdlib.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
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef PROCESS_QUERY_LIMITED_INFORMATION
/* MinGW32 < 4 does not define this value in its headers */
#define PROCESS_QUERY_LIMITED_INFORMATION (0x1000)
#endif
typedef int socklen_t;
void
_dbus_win_set_errno (int err)
{
#ifdef DBUS_WINCE
SetLastError (err);
#else
errno = err;
#endif
}
static BOOL is_winxp_sp3_or_lower (void);
/*
* _MIB_TCPROW_EX and friends are not available in system headers
* and are mapped to attribute identical ...OWNER_PID typedefs.
*/
typedef MIB_TCPROW_OWNER_PID _MIB_TCPROW_EX;
typedef MIB_TCPTABLE_OWNER_PID MIB_TCPTABLE_EX;
typedef PMIB_TCPTABLE_OWNER_PID PMIB_TCPTABLE_EX;
typedef DWORD (WINAPI *ProcAllocateAndGetTcpExtTableFromStack)(PMIB_TCPTABLE_EX*,BOOL,HANDLE,DWORD,DWORD);
static ProcAllocateAndGetTcpExtTableFromStack lpfnAllocateAndGetTcpExTableFromStack = NULL;
/**
* AllocateAndGetTcpExTableFromStack() is undocumented and not exported,
* but is the only way to do this in older XP versions.
* @return true if the procedures could be loaded
*/
static BOOL
load_ex_ip_helper_procedures(void)
{
HMODULE hModule = LoadLibrary ("iphlpapi.dll");
if (hModule == NULL)
{
_dbus_verbose ("could not load iphlpapi.dll\n");
return FALSE;
}
lpfnAllocateAndGetTcpExTableFromStack = (ProcAllocateAndGetTcpExtTableFromStack)GetProcAddress (hModule, "AllocateAndGetTcpExTableFromStack");
if (lpfnAllocateAndGetTcpExTableFromStack == NULL)
{
_dbus_verbose ("could not find function AllocateAndGetTcpExTableFromStack in iphlpapi.dll\n");
return FALSE;
}
return TRUE;
}
/**
* get pid from localhost tcp connection using peer_port
* This function is available on WinXP >= SP3
* @param peer_port peers tcp port
* @return process id or 0 if connection has not been found
*/
static dbus_pid_t
get_pid_from_extended_tcp_table(int peer_port)
{
dbus_pid_t result;
DWORD errorCode, size = 0, i;
MIB_TCPTABLE_OWNER_PID *tcp_table;
if ((errorCode =
GetExtendedTcpTable (NULL, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) == ERROR_INSUFFICIENT_BUFFER)
{
tcp_table = (MIB_TCPTABLE_OWNER_PID *) dbus_malloc (size);
if (tcp_table == NULL)
{
_dbus_verbose ("Error allocating memory\n");
return 0;
}
}
else
{
_dbus_win_warn_win_error ("unexpected error returned from GetExtendedTcpTable", errorCode);
return 0;
}
if ((errorCode = GetExtendedTcpTable (tcp_table, &size, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0)) != NO_ERROR)
{
_dbus_verbose ("Error fetching tcp table %d\n", (int)errorCode);
dbus_free (tcp_table);
return 0;
}
result = 0;
for (i = 0; i < tcp_table->dwNumEntries; i++)
{
MIB_TCPROW_OWNER_PID *p = &tcp_table->table[i];
int local_address = ntohl (p->dwLocalAddr);
int local_port = ntohs (p->dwLocalPort);
if (p->dwState == MIB_TCP_STATE_ESTAB
&& local_address == INADDR_LOOPBACK && local_port == peer_port)
result = p->dwOwningPid;
}
dbus_free (tcp_table);
_dbus_verbose ("got pid %lu\n", result);
return result;
}
/**
* get pid from localhost tcp connection using peer_port
* This function is available on all WinXP versions, but
* not in wine (at least version <= 1.6.0)
* @param peer_port peers tcp port
* @return process id or 0 if connection has not been found
*/
static dbus_pid_t
get_pid_from_tcp_ex_table(int peer_port)
{
dbus_pid_t result;
DWORD errorCode, i;
PMIB_TCPTABLE_EX tcp_table = NULL;
if (!load_ex_ip_helper_procedures ())
{
_dbus_verbose
("Error not been able to load iphelper procedures\n");
return 0;
}
errorCode = lpfnAllocateAndGetTcpExTableFromStack (&tcp_table, TRUE, GetProcessHeap(), 0, 2);
if (errorCode != NO_ERROR)
{
_dbus_verbose
("Error not been able to call AllocateAndGetTcpExTableFromStack()\n");
return 0;
}
result = 0;
for (i = 0; i < tcp_table->dwNumEntries; i++)
{
_MIB_TCPROW_EX *p = &tcp_table->table[i];
int local_port = ntohs (p->dwLocalPort);
int local_address = ntohl (p->dwLocalAddr);
if (local_address == INADDR_LOOPBACK && local_port == peer_port)
{
result = p->dwOwningPid;
break;
}
}
HeapFree (GetProcessHeap(), 0, tcp_table);
_dbus_verbose ("got pid %lu\n", result);
return result;
}
/**
* @brief return peer process id from tcp handle for localhost connections
* @param handle tcp socket descriptor
* @return process id or 0 in case the process id could not be fetched
*/
static dbus_pid_t
_dbus_get_peer_pid_from_tcp_handle (int handle)
{
struct sockaddr_storage addr;
socklen_t len = sizeof (addr);
int peer_port;
dbus_pid_t result;
dbus_bool_t is_localhost = FALSE;
getpeername (handle, (struct sockaddr *) &addr, &len);
if (addr.ss_family == AF_INET)
{
struct sockaddr_in *s = (struct sockaddr_in *) &addr;
peer_port = ntohs (s->sin_port);
is_localhost = (ntohl (s->sin_addr.s_addr) == INADDR_LOOPBACK);
}
else if (addr.ss_family == AF_INET6)
{
_dbus_verbose ("FIXME [61922]: IPV6 support not working on windows\n");
return 0;
/*
struct sockaddr_in6 *s = (struct sockaddr_in6 * )&addr;
peer_port = ntohs (s->sin6_port);
is_localhost = (memcmp(s->sin6_addr.s6_addr, in6addr_loopback.s6_addr, 16) == 0);
_dbus_verbose ("IPV6 %08x %08x\n", s->sin6_addr.s6_addr, in6addr_loopback.s6_addr);
*/
}
else
{
_dbus_verbose ("no idea what address family %d is\n", addr.ss_family);
return 0;
}
if (!is_localhost)
{
_dbus_verbose ("could not fetch process id from remote process\n");
return 0;
}
if (peer_port == 0)
{
_dbus_verbose
("Error not been able to fetch tcp peer port from connection\n");
return 0;
}
_dbus_verbose ("trying to get peer's pid\n");
result = get_pid_from_extended_tcp_table (peer_port);
if (result > 0)
return result;
result = get_pid_from_tcp_ex_table (peer_port);
return result;
}
/* 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;
default:
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 (DBusSocket 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=%Iu\n", count, fd.sock);
bytes_read = recv (fd.sock, 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 (DBusSocket 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=%Iu\n", len, fd.sock);
bytes_written = send (fd.sock, 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 (DBusSocket fd,
DBusError *error)
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
again:
if (closesocket (fd.sock) == 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=%Iu, , %s",
fd.sock, _dbus_strerror_from_errno ());
return FALSE;
}
_dbus_verbose ("socket=%Iu, \n", fd.sock);
return TRUE;
}
/**
* Sets the file descriptor to be close
* on exec. Should be called for all file
* descriptors in D-Bus code.
*
* @param handle the Windows HANDLE (a SOCKET is also OK)
*/
static void
_dbus_win_handle_set_close_on_exec (HANDLE 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 handle the file descriptor.
* @param error address of error location.
* @returns #TRUE on success.
*/
dbus_bool_t
_dbus_set_socket_nonblocking (DBusSocket handle,
DBusError *error)
{
u_long one = 1;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (ioctlsocket (handle.sock, FIONBIO, &one) == SOCKET_ERROR)
{
DBUS_SOCKET_SET_ERRNO ();
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to set socket %Iu to nonblocking: %s",
handle.sock, _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 (DBusSocket 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=%Iu\n", len1, len2, fd.sock);
rc = WSASend (fd.sock,
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 = (DWORD) -1;
}
else
_dbus_verbose ("WSASend: = %ld\n", bytes_written);
if (bytes_written == (DWORD) -1 && errno == EINTR)
goto again;
return bytes_written;
}
#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
/**
* @returns #FALSE if no memory
*/
dbus_bool_t
_dbus_win_startup_winsock (void)
{
/* Straight from MSDN, deuglified */
/* Protected by _DBUS_LOCK_sysdeps */
static dbus_bool_t beenhere = FALSE;
WORD wVersionRequested;
WSADATA wsaData;
int err;
if (!_DBUS_LOCK (sysdeps))
return FALSE;
if (beenhere)
goto out;
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;
out:
_DBUS_UNLOCK (sysdeps);
return 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;
va_list args_copy;
bufsize = sizeof (buf);
DBUS_VA_COPY (args_copy, args);
len = _vsnprintf (buf, bufsize - 1, format, args_copy);
va_end (args_copy);
while (len == -1) /* try again */
{
char *p;
bufsize *= 2;
p = malloc (bufsize);
if (p == NULL)
return -1;
DBUS_VA_COPY (args_copy, args);
len = _vsnprintf (p, bufsize - 1, format, args_copy);
va_end (args_copy);
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
static BOOL
is_winxp_sp3_or_lower (void)
{
OSVERSIONINFOEX osvi;
DWORDLONG dwlConditionMask = 0;
int op=VER_LESS_EQUAL;
// Initialize the OSVERSIONINFOEX structure.
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
osvi.dwMajorVersion = 5;
osvi.dwMinorVersion = 1;
osvi.wServicePackMajor = 3;
osvi.wServicePackMinor = 0;
// Initialize the condition mask.
VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION, op );
VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION, op );
VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR, op );
VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMINOR, op );
// Perform the test.
return VerifyVersionInfo(
&osvi,
VER_MAJORVERSION | VER_MINORVERSION |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR,
dwlConditionMask);
}
/** Gets our SID
* @param sid points to sid buffer, need to be freed with LocalFree()
* @param process_id the process id for which the sid should be returned (use 0 for current process)
* @returns process sid
*/
dbus_bool_t
_dbus_getsid(char **sid, dbus_pid_t process_id)
{
HANDLE process_token = INVALID_HANDLE_VALUE;
TOKEN_USER *token_user = NULL;
DWORD n;
PSID psid;
int retval = FALSE;
HANDLE process_handle;
if (process_id == 0)
process_handle = GetCurrentProcess();
else if (is_winxp_sp3_or_lower())
process_handle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, process_id);
else
process_handle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, process_id);
if (!OpenProcessToken (process_handle, 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:
CloseHandle (process_handle);
if (process_token != INVALID_HANDLE_VALUE)
CloseHandle (process_token);
_dbus_verbose("_dbus_getsid() got '%s' and returns %d\n", *sid, retval);
return retval;
}
#endif
/************************************************************************
pipes
************************************************************************/
/**
* Creates pair of connect sockets (as in socketpair()).
* Sets both ends of the pair nonblocking.
*
* Marks both file descriptors as close-on-exec
*
* @param fd1 return location for one end
* @param fd2 return location for the other end
* @param blocking #TRUE if pair should be blocking
* @param error error return
* @returns #FALSE on failure (if error is set)
*/
dbus_bool_t
_dbus_socketpair (DBusSocket *fd1,
DBusSocket *fd2,
dbus_bool_t blocking,
DBusError *error)
{
SOCKET temp, socket1 = -1, socket2 = -1;
struct sockaddr_in saddr;
int len;
u_long arg;
if (!_dbus_win_startup_winsock ())
{
_DBUS_SET_OOM (error);
return FALSE;
}
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->sock = socket1;
fd2->sock = socket2;
_dbus_verbose ("full-duplex pipe %Iu:%Iu <-> %Iu:%Iu\n",
fd1->sock, socket1, fd2->sock, 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:%Iu ", fdp->fd.sock);
if (fdp->events & _DBUS_POLLOUT)
msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
// 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.sock, 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.sock, 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:%Iu ", fdp->fd.sock);
if (ne.lNetworkEvents & (FD_WRITE | FD_CONNECT))
msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
if (ne.lNetworkEvents & (FD_OOB))
msgp += sprintf (msgp, "E:%Iu ", fdp->fd.sock);
msgp += sprintf (msgp, "lNetworkEvents:%d ", ne.lNetworkEvents);
if(ne.lNetworkEvents)
ret++;
WSAEventSelect(fdp->fd.sock, 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 */
#ifdef DBUS_ENABLE_VERBOSE_MODE
#define DBUS_POLL_CHAR_BUFFER_SIZE 2000
char msg[DBUS_POLL_CHAR_BUFFER_SIZE];
char *msgp;
#endif
fd_set read_set, write_set, err_set;
SOCKET 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:%Iu ", fdp->fd.sock);
if (fdp->events & _DBUS_POLLOUT)
msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
// 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.sock, &read_set);
if (fdp->events & _DBUS_POLLOUT)
FD_SET (fdp->fd.sock, &write_set);
FD_SET (fdp->fd.sock, &err_set);
max_fd = MAX (max_fd, fdp->fd.sock);
}
// 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.sock, &read_set))
msgp += sprintf (msgp, "R:%Iu ", fdp->fd.sock);
if (FD_ISSET (fdp->fd.sock, &write_set))
msgp += sprintf (msgp, "W:%Iu ", fdp->fd.sock);
if (FD_ISSET (fdp->fd.sock, &err_set))
msgp += sprintf (msgp, "E:%Iu\n\t", fdp->fd.sock);
}
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.sock, &read_set))
fdp->revents |= _DBUS_POLLIN;
if (FD_ISSET (fdp->fd.sock, &write_set))
fdp->revents |= _DBUS_POLLOUT;
if (FD_ISSET (fdp->fd.sock, &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
*/
DBusSocket
_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);
}
DBusSocket
_dbus_connect_tcp_socket_with_nonce (const char *host,
const char *port,
const char *family,
const char *noncefile,
DBusError *error)
{
DBusSocket fd = DBUS_SOCKET_INIT;
int res;
struct addrinfo hints;
struct addrinfo *ai, *tmp;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (!_dbus_win_startup_winsock ())
{
_DBUS_SET_OOM (error);
return _dbus_socket_get_invalid ();
}
_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 _dbus_socket_get_invalid ();
}
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 _dbus_socket_get_invalid ();
}
tmp = ai;
while (tmp)
{
if ((fd.sock = 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 _dbus_socket_get_invalid ();
}
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
if (connect (fd.sock, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
{
DBUS_SOCKET_SET_ERRNO ();
closesocket(fd.sock);
fd.sock = INVALID_SOCKET;
tmp = tmp->ai_next;
continue;
}
break;
}
freeaddrinfo(ai);
if (!_dbus_socket_is_valid (fd))
{
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to connect to socket \"%s:%s\" %s",
host, port, _dbus_strerror_from_errno ());
return _dbus_socket_get_invalid ();
}
if (noncefile != NULL)
{
DBusString noncefileStr;
dbus_bool_t ret;
if (!_dbus_string_init (&noncefileStr) ||
!_dbus_string_append(&noncefileStr, noncefile))
{
closesocket (fd.sock);
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return _dbus_socket_get_invalid ();
}
ret = _dbus_send_nonce (fd, &noncefileStr, error);
_dbus_string_free (&noncefileStr);
if (!ret)
{
closesocket (fd.sock);
return _dbus_socket_get_invalid ();
}
}
/* Every SOCKET is also a HANDLE. */
_dbus_win_handle_set_close_on_exec ((HANDLE) fd.sock);
if (!_dbus_set_socket_nonblocking (fd, error))
{
closesocket (fd.sock);
return _dbus_socket_get_invalid ();
}
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,
DBusSocket **fds_p,
DBusError *error)
{
DBusSocket *listen_fd = NULL;
int nlisten_fd = 0, 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);
if (!_dbus_win_startup_winsock ())
{
_DBUS_SET_OOM (error);
return -1;
}
_DBUS_ZERO (hints);
if (!family)
hints.ai_family = AF_INET;
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)
{
DBusSocket fd = DBUS_SOCKET_INIT, *newlisten_fd;
if ((fd.sock = 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.sock, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) == SOCKET_ERROR)
{
DBUS_SOCKET_SET_ERRNO ();
closesocket (fd.sock);
if (errno == WSAEADDRINUSE)
{
/* Calling this function with port=0 tries to
* bind the same port twice, so we should
* ignore the second bind.
*/
tmp = tmp->ai_next;
continue;
}
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to bind socket \"%s:%s\": %s",
host ? host : "*", port, _dbus_strerror_from_errno ());
goto failed;
}
if (listen (fd.sock, 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.sock);
goto failed;
}
newlisten_fd = dbus_realloc(listen_fd, sizeof(DBusSocket)*(nlisten_fd+1));
if (!newlisten_fd)
{
closesocket (fd.sock);
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[NI_MAXSERV];
if (getsockname(fd.sock, &addr.Address, &addrlen) == SOCKET_ERROR ||
(res = getnameinfo (&addr.Address, addrlen, NULL, 0,
portbuf, sizeof(portbuf),
NI_NUMERICSERV)) != 0)
{
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;
}
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_win_handle_set_close_on_exec ((HANDLE) listen_fd[i].sock);
if (!_dbus_set_socket_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].sock);
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
*/
DBusSocket
_dbus_accept (DBusSocket listen_fd)
{
DBusSocket client_fd;
retry:
client_fd.sock = accept (listen_fd.sock, NULL, NULL);
if (!_dbus_socket_is_valid (client_fd))
{
DBUS_SOCKET_SET_ERRNO ();
if (errno == EINTR)
goto retry;
}
_dbus_verbose ("client fd %Iu accepted\n", client_fd.sock);
return client_fd;
}
dbus_bool_t
_dbus_send_credentials_socket (DBusSocket 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 handle 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 (DBusSocket handle,
DBusCredentials *credentials,
DBusError *error)
{
int bytes_read = 0;
DBusString buf;
char *sid = NULL;
dbus_pid_t pid;
int retval = FALSE;
// 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\n");
_dbus_string_free (&buf);
}
pid = _dbus_get_peer_pid_from_tcp_handle (handle.sock);
if (pid == 0)
return TRUE;
_dbus_credentials_add_pid (credentials, pid);
if (_dbus_getsid (&sid, pid))
{
if (!_dbus_credentials_add_windows_sid (credentials, sid))
goto out;
}
retval = TRUE;
out:
if (sid)
LocalFree (sid);
return retval;
}
/**
* 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, _dbus_getpid()))
goto failed;
if (!_dbus_credentials_add_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, _dbus_getpid()))
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 ();
}
/** Gets our Unix UID
* @returns on Windows, just DBUS_UID_UNSET
*/
dbus_uid_t
_dbus_getuid (void)
{
return DBUS_UID_UNSET;
}
/** 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. Unlike _dbus_ensure_directory(), this only succeeds
* if the directory is genuinely newly-created.
*
* @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))
{
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;
}
/**
* 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_ensure_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
* @param error location to store reason for failure
* @returns #TRUE on success
*/
dbus_bool_t
_dbus_generate_random_bytes (DBusString *str,
int n_bytes,
DBusError *error)
{
int old_len;
unsigned char *p;
HCRYPTPROV hprov;
old_len = _dbus_string_get_length (str);
if (!_dbus_string_lengthen (str, n_bytes))
{
_DBUS_SET_OOM (error);
return FALSE;
}
p = _dbus_string_get_udata_len (str, old_len, n_bytes);
if (!CryptAcquireContext (&hprov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
{
_DBUS_SET_OOM (error);
return FALSE;
}
if (!CryptGenRandom (hprov, n_bytes, p))
{
_DBUS_SET_OOM (error);
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, or #NULL if no memory for locking
*/
const char*
_dbus_get_tmpdir(void)
{
/* Protected by _DBUS_LOCK_sysdeps */
static const char* tmpdir = NULL;
static char buf[1000];
if (!_DBUS_LOCK (sysdeps))
return NULL;
if (tmpdir == NULL)
{
unsigned char *last_slash;
unsigned char *p = (unsigned char *)buf;
if (!GetTempPathA (sizeof (buf), buf))
{
_dbus_warn ("GetTempPath failed");
_dbus_abort ();
}
/* Drop terminating backslash or slash */
last_slash = _mbsrchr (p, '\\');
if (last_slash > p && last_slash[1] == '\0')
last_slash[0] = '\0';
last_slash = _mbsrchr (p, '/');
if (last_slash > p && last_slash[1] == '\0')
last_slash[0] = '\0';
tmpdir = buf;
}
_DBUS_UNLOCK (sysdeps);
_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;
}
#if !defined (DBUS_DISABLE_ASSERT) || defined(DBUS_ENABLE_EMBEDDED_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(fmt, ...) fprintf (stderr, fmt, ##__VA_ARGS__)
#ifdef _MSC_VER
#define BOOL int
#define __i386__
#endif
static void dump_backtrace_for_thread (HANDLE hThread)
{
ADDRESS old_address;
STACKFRAME sf;
CONTEXT context;
DWORD dwImageType;
int i = 0;
SymSetOptions (SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
SymInitialize (GetCurrentProcess (), NULL, TRUE);
/* 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 (old_address);
_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__
dwImageType = IMAGE_FILE_MACHINE_I386;
sf.AddrFrame.Offset = context.Ebp;
sf.AddrFrame.Mode = AddrModeFlat;
sf.AddrPC.Offset = context.Eip;
sf.AddrPC.Mode = AddrModeFlat;
#elif defined(_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 defined(_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
/*
backtrace format
<level> <address> <symbol>[+offset] [ '[' <file> ':' <line> ']' ] [ 'in' <module> ]
example:
6 0xf75ade6b wine_switch_to_stack+0x2a [/usr/src/debug/wine-snapshot/libs/wine/port.c:59] in libwine.so.1
*/
while (StackWalk (dwImageType, GetCurrentProcess (),
hThread, &sf, &context, NULL, SymFunctionTableAccess,
SymGetModuleBase, NULL))
{
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(char)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
DWORD64 displacement;
IMAGEHLP_LINE line;
DWORD dwDisplacement;
IMAGEHLP_MODULE moduleInfo;
/*
on Wine64 version 1.7.54, we get an infinite number of stack entries
pointing to the same stack frame (_start+0x29 in <wine-loader>)
see bug https://bugs.winehq.org/show_bug.cgi?id=39606
*/
#ifndef __i386__
if (old_address.Offset == sf.AddrPC.Offset)
{
break;
}
#endif
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
if (SymFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &displacement, pSymbol))
{
if (displacement)
DPRINTF ("%3d %s+0x%I64x", i++, pSymbol->Name, displacement);
else
DPRINTF ("%3d %s", i++, pSymbol->Name);
}
else
DPRINTF ("%3d 0x%Ix", i++, sf.AddrPC.Offset);
line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
if (SymGetLineFromAddr (GetCurrentProcess (), sf.AddrPC.Offset, &dwDisplacement, &line))
{
DPRINTF (" [%s:%ld]", line.FileName, line.LineNumber);
}
moduleInfo.SizeOfStruct = sizeof(moduleInfo);
if (SymGetModuleInfo (GetCurrentProcess (), sf.AddrPC.Offset, &moduleInfo))
{
DPRINTF (" in %s", moduleInfo.ModuleName);
}
DPRINTF ("\n");
old_address = sf.AddrPC;
}
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 (void)
{
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)
{
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;
default:
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;
_dbus_string_init(&install_path);
if (!_dbus_get_install_root (&install_path) ||
_dbus_string_get_length (&install_path) == 0)
return FALSE;
_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_uint64_t len;
_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
len = strlen (address) + 1;
hDBusSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
len >> 32, len & 0xffffffffu,
_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 for scope '%s' at %s\n",
scope ? scope : "", _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);
_dbus_string_free (&shm_name);
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;
}
/**
* 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)
{
/* In this situation, GLib issues a MemoryBarrier() and then returns
* atomic->value. However, mingw from mingw.org (not to be confused with
* mingw-w64 from mingw-w64.sf.net) does not have MemoryBarrier in its
* headers, so we have to get a memory barrier some other way.
*
* InterlockedIncrement is older, and is documented on MSDN to be a full
* memory barrier, so let's use that.
*/
long dummy = 0;
InterlockedExchange (&dummy, 1);
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 e == EAGAIN or e == EWOULDBLOCK
*/
dbus_bool_t
_dbus_get_is_errno_eagain_or_ewouldblock (int e)
{
return e == WSAEWOULDBLOCK;
}
/**
* Fill str with the absolute path of the D-Bus installation, or truncate str
* to zero length if we cannot determine it.
*
* @param str buffer for installation path
* @returns #FALSE on OOM, #TRUE if not OOM
*/
dbus_bool_t
_dbus_get_install_root (DBusString *str)
{
/* this is just an initial guess */
DWORD pathLength = MAX_PATH;
unsigned char *lastSlash;
unsigned char *prefix;
do
{
/* allocate enough space for our best guess at the length */
if (!_dbus_string_set_length (str, pathLength))
{
_dbus_string_set_length (str, 0);
return FALSE;
}
SetLastError (0);
pathLength = GetModuleFileNameA (_dbus_win_get_dll_hmodule (),
_dbus_string_get_data (str), _dbus_string_get_length (str));
if (pathLength == 0 || GetLastError () != 0)
{
/* failed, but not OOM */
_dbus_string_set_length (str, 0);
return TRUE;
}
/* if the return is strictly less than the buffer size, it has
* not been truncated, so we can continue */
if (pathLength < (DWORD) _dbus_string_get_length (str))
{
/* reduce the length to match what Windows filled in */
if (!_dbus_string_set_length (str, pathLength))
{
_dbus_string_set_length (str, 0);
return FALSE;
}
break;
}
/* else it may have been truncated; try with a larger buffer */
pathLength *= 2;
}
while (TRUE);
/* the rest of this function works by direct byte manipulation of the
* underlying buffer */
prefix = _dbus_string_get_udata (str);
lastSlash = _mbsrchr (prefix, '\\');
if (lastSlash == NULL) {
/* failed, but not OOM */
_dbus_string_set_length (str, 0);
return TRUE;
}
//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 && _mbsnicmp (lastSlash - 4, (const unsigned char *)"\\bin", 4) == 0)
lastSlash[-3] = 0;
else if (lastSlash - prefix >= 10 && _mbsnicmp (lastSlash - 10, (const unsigned char *)"\\bin\\debug", 10) == 0)
lastSlash[-9] = 0;
else if (lastSlash - prefix >= 12 && _mbsnicmp (lastSlash - 12, (const unsigned char *)"\\bin\\release", 12) == 0)
lastSlash[-11] = 0;
/* fix up the length to match the byte-manipulation */
_dbus_string_set_length (str, strlen ((char *) prefix));
return TRUE;
}
/* 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_ENABLE_EMBEDDED_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
{
/* Not strictly thread-safe, but if we fail at thread-safety here,
* the worst that will happen is some extra warnings. */
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");
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";
default:
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)
{
dbus_set_error (error, "win32.error", "%s", msg);
LocalFree (msg);
}
else
dbus_set_error (error, "win32.error", "Unknown error code %d or FormatMessage failed", code);
}
void
_dbus_win_warn_win_error (const char *message,
unsigned long code)
{
DBusError error;
dbus_error_init (&error);
_dbus_win_set_error_from_win_error (&error, code);
_dbus_warn ("%s: %s", 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;
}
dbus_bool_t
_dbus_check_setuid (void)
{
return FALSE;
}
int
_dbus_save_socket_errno (void)
{
return errno;
}
void
_dbus_restore_socket_errno (int saved_errno)
{
_dbus_win_set_errno (saved_errno);
}
static const char *log_tag = "dbus";
static DBusLogFlags log_flags = DBUS_LOG_FLAGS_STDERR;
/**
* Initialize the system log.
*
* The "tag" is not copied, and must remain valid for the entire lifetime of
* the process or until _dbus_init_system_log() is called again. In practice
* it will normally be a constant.
*
* @param tag the name of the executable (syslog tag)
* @param mode whether to log to stderr, the system log or both
*/
void
_dbus_init_system_log (const char *tag,
DBusLogFlags flags)
{
/* We never want to turn off logging completely */
_dbus_assert (
(flags & (DBUS_LOG_FLAGS_STDERR | DBUS_LOG_FLAGS_SYSTEM_LOG)) != 0);
log_tag = tag;
log_flags = flags;
}
/**
* Log a message to the system log file (e.g. syslog on Unix).
*
* @param severity a severity value
* @param msg a printf-style format string
* @param args arguments for the format string
*/
void
_dbus_logv (DBusSystemLogSeverity severity,
const char *msg,
va_list args)
{
const char *s = "";
va_list tmp;
switch(severity)
{
case DBUS_SYSTEM_LOG_INFO: s = "info"; break;
case DBUS_SYSTEM_LOG_WARNING: s = "warning"; break;
case DBUS_SYSTEM_LOG_SECURITY: s = "security"; break;
case DBUS_SYSTEM_LOG_ERROR: s = "error"; break;
default: _dbus_assert_not_reached ("invalid log severity");
}
if (log_flags & DBUS_LOG_FLAGS_SYSTEM_LOG)
{
char buf[1024];
char format[1024];
DBUS_VA_COPY (tmp, args);
snprintf (format, sizeof (format), "%s: %s", s, msg);
vsnprintf(buf, sizeof(buf), format, tmp);
OutputDebugStringA(buf);
va_end (tmp);
}
if (log_flags & DBUS_LOG_FLAGS_STDERR)
{
DBUS_VA_COPY (tmp, args);
fprintf (stderr, "%s[%lu]: %s: ", log_tag, _dbus_pid_for_log (), s);
vfprintf (stderr, msg, tmp);
fprintf (stderr, "\n");
va_end (tmp);
}
}
/** @} end of sysdeps-win */
/* tests in dbus-sysdeps-util.c */