/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-sysdeps-unix.c Wrappers around UNIX system/libc features (internal to D-Bus implementation)
*
* Copyright (C) 2002, 2003, 2006 Red Hat, Inc.
* Copyright (C) 2003 CodeFactory AB
* Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include "dbus-internals.h"
#include "dbus-sysdeps.h"
#include "dbus-sysdeps-unix.h"
#include "dbus-threads.h"
#include "dbus-protocol.h"
#include "dbus-transport.h"
#include "dbus-string.h"
#include "dbus-userdb.h"
#include "dbus-list.h"
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#ifndef __SYMBIAN32__
#include <signal.h>
#endif
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <dirent.h>
#ifndef __SYMBIAN32__
#include <sys/un.h>
#endif
#include <pwd.h>
#include <time.h>
#include <locale.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <netdb.h>
#include <grp.h>
#ifdef __SYMBIAN32__
#include "config.h"
#include "dbus-sysdeps-unix-helper.h"
#endif //__SYMBIAN32__
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_WRITEV
#include <sys/uio.h>
#endif
#ifdef HAVE_POLL
#include <sys/poll.h>
#endif
#ifdef HAVE_BACKTRACE
#include <execinfo.h>
#endif
#ifdef HAVE_GETPEERUCRED
#include <ucred.h>
#endif
#ifdef __SYMBIAN32__
#include <sys/select.h>
#include "libdbus_wsd_solution.h"
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef HAVE_SOCKLEN_T
#define socklen_t int
#endif
static dbus_bool_t
_dbus_open_socket (int *fd,
int domain,
int type,
int protocol,
DBusError *error)
{
*fd = socket (domain, type, protocol);
if (*fd >= 0)
{
return TRUE;
}
else
{
dbus_set_error(error,
_dbus_error_from_errno (errno),
"Failed to open socket: %s",
_dbus_strerror (errno));
return FALSE;
}
}
dbus_bool_t
_dbus_open_tcp_socket (int *fd,
DBusError *error)
{
return _dbus_open_socket(fd, AF_INET, SOCK_STREAM, 0, error);
}
/**
* Opens a UNIX domain socket (as in the socket() call).
* Does not bind the socket.
* @param fd return location for socket descriptor
* @param error return location for an error
* @returns #FALSE if error is set
*/
dbus_bool_t
_dbus_open_unix_socket (int *fd,
DBusError *error)
{
return _dbus_open_socket(fd, PF_UNIX, SOCK_STREAM, 0, error);
}
/**
* Closes a socket. Should not be used on non-socket
* file descriptors or handles.
*
* @param fd the socket
* @param error return location for an error
* @returns #FALSE if error is set
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_bool_t
_dbus_close_socket (int fd,
DBusError *error)
{
return _dbus_close (fd, error);
}
/**
* Like _dbus_read(), but only works on sockets so is
* available on Windows.
*
* @param fd the socket
* @param buffer string to append data to
* @param count max amount of data to read
* @returns number of bytes appended to the string
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
int
_dbus_read_socket (int fd,
DBusString *buffer,
int count)
{
return _dbus_read (fd, buffer, count);
}
/**
* Like _dbus_write(), but only supports sockets
* and is thus available on Windows.
*
* @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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
int
_dbus_write_socket (int fd,
const DBusString *buffer,
int start,
int len)
{
return _dbus_write (fd, buffer, start, len);
}
/**
* Like _dbus_write_two() but only works on sockets and is thus
* available on Windows.
*
* @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)
{
return _dbus_write_two (fd, buffer1, start1, len1,
buffer2, start2, len2);
}
/**
* 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() handles EINTR for you. Also, _dbus_read() can
* return ENOMEM, even though regular UNIX read doesn't.
*
* Unlike _dbus_read_socket(), _dbus_read() is not available
* on Windows.
*
* @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 (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))
{
errno = ENOMEM;
return -1;
}
data = _dbus_string_get_data_len (buffer, start, count);
again:
bytes_read = read (fd, data, count);
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 (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:
bytes_written = write (fd, data, len);
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;
}
/**
* 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_two (int fd,
const DBusString *buffer1,
int start1,
int len1,
const DBusString *buffer2,
int start2,
int len2)
{
_dbus_assert (buffer1 != NULL);
_dbus_assert (start1 >= 0);
_dbus_assert (start2 >= 0);
_dbus_assert (len1 >= 0);
_dbus_assert (len2 >= 0);
#ifndef HAVE_WRITEV
{
struct iovec vectors[2];
const char *data1;
const char *data2;
int bytes_written;
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].iov_base = (char*) data1;
vectors[0].iov_len = len1;
vectors[1].iov_base = (char*) data2;
vectors[1].iov_len = len2;
again:
bytes_written = writev (fd,
vectors,
data2 ? 2 : 1);
if (bytes_written < 0 && errno == EINTR)
goto again;
return bytes_written;
}
#else /* HAVE_WRITEV */
{
int ret1;
// NOTE
// Corrected here, bacause this is real error
#ifdef __SYMBIAN32__
int ret2;
#else
// NOTE
// Folowing line addded and corrected here, bacause this is real error
int ret2;
#endif
ret1 = _dbus_write (fd, buffer1, start1, len1);
if (ret1 == len1 && buffer2 != NULL)
{
ret2 = _dbus_write (fd, buffer2, start2, len2);
if (ret2 < 0)
ret2 = 0; /* we can't report an error as the first write was OK */
return ret1 + ret2;
}
else
return ret1;
}
#endif /* !HAVE_WRITEV */
}
#define _DBUS_MAX_SUN_PATH_LENGTH 99
/**
* @def _DBUS_MAX_SUN_PATH_LENGTH
*
* Maximum length of the path to a UNIX domain socket,
* sockaddr_un::sun_path member. POSIX requires that all systems
* support at least 100 bytes here, including the nul termination.
* We use 99 for the max value to allow for the nul.
*
* We could probably also do sizeof (addr.sun_path)
* but this way we are the same on all platforms
* which is probably a good idea.
*/
/**
* Creates a socket and connects it to the UNIX domain socket at the
* given path. The connection fd is returned, and is set up as
* nonblocking.
*
* Uses abstract sockets instead of filesystem-linked sockets if
* requested (it's possible only on Linux; see "man 7 unix" on Linux).
* On non-Linux abstract socket usage always fails.
*
* @param path the path to UNIX domain socket
* @param abstract #TRUE to use abstract namespace
* @param error return location for error code
* @returns connection file descriptor or -1 on error
*/
int
_dbus_connect_unix_socket (const char *path,
dbus_bool_t abstract,
DBusError *error)
{
#ifdef __SYMBIAN32__
return -1;
#else
int fd;
size_t path_len;
struct sockaddr_un addr;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_verbose ("connecting to unix socket %s abstract=%d\n",
path, abstract);
if (!_dbus_open_unix_socket (&fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return -1;
}
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
_DBUS_ZERO (addr);
addr.sun_family = AF_UNIX;
path_len = strlen (path);
if (abstract)
{
#ifdef HAVE_ABSTRACT_SOCKETS
addr.sun_path[0] = '\0'; /* this is what says "use abstract" */
path_len++; /* Account for the extra nul byte added to the start of sun_path */
if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
{
dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
"Abstract socket name too long\n");
_dbus_close (fd, NULL);
return -1;
}
strncpy (&addr.sun_path[1], path, path_len);
/* _dbus_verbose_bytes (addr.sun_path, sizeof (addr.sun_path)); */
#else /* HAVE_ABSTRACT_SOCKETS */
dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
"Operating system does not support abstract socket namespace\n");
_dbus_close (fd, NULL);
return -1;
#endif /* ! HAVE_ABSTRACT_SOCKETS */
}
else
{
if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
{
dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
"Socket name too long\n");
_dbus_close (fd, NULL);
return -1;
}
strncpy (addr.sun_path, path, path_len);
}
if (connect (fd, (struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (struct sockaddr_un, sun_path) + path_len) < 0)
{
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to connect to socket %s: %s",
path, _dbus_strerror (errno));
_dbus_close (fd, NULL);
fd = -1;
return -1;
}
if (!_dbus_set_fd_nonblocking (fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_close (fd, NULL);
fd = -1;
return -1;
}
return fd;
#endif
}
/**
* Enables or disables the reception of credentials on the given socket during
* the next message transmission. This is only effective if the #LOCAL_CREDS
* system feature exists, in which case the other side of the connection does
* not have to do anything special to send the credentials.
*
* @param fd socket on which to change the #LOCAL_CREDS flag.
* @param on whether to enable or disable the #LOCAL_CREDS flag.
*/
static dbus_bool_t
_dbus_set_local_creds (int fd, dbus_bool_t on)
{
dbus_bool_t retval = TRUE;
#if defined(HAVE_CMSGCRED)
/* NOOP just to make sure only one codepath is used
* and to prefer CMSGCRED
*/
#elif defined(LOCAL_CREDS)
int val = on ? 1 : 0;
if (setsockopt (fd, 0, LOCAL_CREDS, &val, sizeof (val)) < 0)
{
_dbus_verbose ("Unable to set LOCAL_CREDS socket option on fd %d\n", fd);
retval = FALSE;
}
else
_dbus_verbose ("LOCAL_CREDS %s for further messages on fd %d\n",
on ? "enabled" : "disabled", fd);
#endif
return retval;
}
/**
* Creates a socket and binds it to the given path,
* then listens on the socket. The socket is
* set to be nonblocking.
*
* Uses abstract sockets instead of filesystem-linked
* sockets if requested (it's possible only on Linux;
* see "man 7 unix" on Linux).
* On non-Linux abstract socket usage always fails.
*
* @param path the socket name
* @param abstract #TRUE to use abstract namespace
* @param error return location for errors
* @returns the listening file descriptor or -1 on error
*/
int
_dbus_listen_unix_socket (const char *path,
dbus_bool_t abstract,
DBusError *error)
{
#ifdef __SYMBIAN32__
// Symbian Open C does not have unix sockets, so return false
dbus_set_error (error, DBUS_ERROR_FAILED,
"Can not listen Unix sockets. Unix sockets are not implemented in Symbian S60 Open C. Fix configuration to use ftp sockets instead.\n");
return -1;
#else
int listen_fd;
struct sockaddr_un addr;
size_t path_len;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_verbose ("listening on unix socket %s abstract=%d\n",
path, abstract);
if (!_dbus_open_unix_socket (&listen_fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return -1;
}
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
_DBUS_ZERO (addr);
addr.sun_family = AF_UNIX;
path_len = strlen (path);
if (abstract)
{
#ifdef HAVE_ABSTRACT_SOCKETS
/* remember that abstract names aren't nul-terminated so we rely
* on sun_path being filled in with zeroes above.
*/
addr.sun_path[0] = '\0'; /* this is what says "use abstract" */
path_len++; /* Account for the extra nul byte added to the start of sun_path */
if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
{
dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
"Abstract socket name too long\n");
_dbus_close (listen_fd, NULL);
return -1;
}
strncpy (&addr.sun_path[1], path, path_len);
/* _dbus_verbose_bytes (addr.sun_path, sizeof (addr.sun_path)); */
#else /* HAVE_ABSTRACT_SOCKETS */
dbus_set_error (error, DBUS_ERROR_NOT_SUPPORTED,
"Operating system does not support abstract socket namespace\n");
_dbus_close (listen_fd, NULL);
return -1;
#endif /* ! HAVE_ABSTRACT_SOCKETS */
}
else
{
/* Discussed security implications of this with Nalin,
* and we couldn't think of where it would kick our ass, but
* it still seems a bit sucky. It also has non-security suckage;
* really we'd prefer to exit if the socket is already in use.
* But there doesn't seem to be a good way to do this.
*
* Just to be extra careful, I threw in the stat() - clearly
* the stat() can't *fix* any security issue, but it at least
* avoids inadvertent/accidental data loss.
*/
{
struct stat sb;
if (stat (path, &sb) == 0 &&
S_ISSOCK (sb.st_mode))
unlink (path);
}
if (path_len > _DBUS_MAX_SUN_PATH_LENGTH)
{
dbus_set_error (error, DBUS_ERROR_BAD_ADDRESS,
"Abstract socket name too long\n");
_dbus_close (listen_fd, NULL);
return -1;
}
strncpy (addr.sun_path, path, path_len);
}
if (bind (listen_fd, (struct sockaddr*) &addr, _DBUS_STRUCT_OFFSET (struct sockaddr_un, sun_path) + path_len) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to bind socket \"%s\": %s",
path, _dbus_strerror (errno));
_dbus_close (listen_fd, NULL);
return -1;
}
if (listen (listen_fd, 30 /* backlog */) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to listen on socket \"%s\": %s",
path, _dbus_strerror (errno));
_dbus_close (listen_fd, NULL);
return -1;
}
if (!_dbus_set_local_creds (listen_fd, TRUE))
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to enable LOCAL_CREDS on socket \"%s\": %s",
path, _dbus_strerror (errno));
close (listen_fd);
return -1;
}
if (!_dbus_set_fd_nonblocking (listen_fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_close (listen_fd, NULL);
return -1;
}
/* Try opening up the permissions, but if we can't, just go ahead
* and continue, maybe it will be good enough.
*/
if (!abstract && chmod (path, 0777) < 0)
_dbus_warn ("Could not set mode 0777 on socket %s\n",
path);
return listen_fd;
#endif
}
/**
* 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 prot to connect to
* @param error return location for error code
* @returns connection file descriptor or -1 on error
*/
int
_dbus_connect_tcp_socket (const char *host,
dbus_uint32_t port,
DBusError *error)
{
int fd;
struct sockaddr_in addr;
struct hostent *he;
struct in_addr *haddr;
int err=0;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (!_dbus_open_tcp_socket (&fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return -1;
}
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
if (host == NULL)
host = "localhost";
he = gethostbyname (host);
if (he == NULL)
{
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to lookup hostname: %s",
host);
_dbus_close (fd, NULL);
return -1;
}
haddr = ((struct in_addr *) (he->h_addr_list)[0]);
/* *AN*
sockaddr_in serv_addr;
int sock_fd;
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
serv_addr.sin_port = htons(5000);
sock_fd = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
connect(sock_fd,(sockaddr*)&serv_addr,sizeof(serv_addr));
*/
#define SERV_HOST_ADDR "127.0.0.1"
/*
printf("size of in_addr:%d", sizeof(struct in_addr));
printf("size of haddr:%d", sizeof(haddr));
printf("size of s_addr:%d", sizeof(addr.sin_addr.s_addr));
getchar();
*/
_DBUS_ZERO (addr);
// memcpy (&addr.sin_addr, haddr, sizeof(struct in_addr));
/*AN*/
addr.sin_addr.s_addr = inet_addr(SERV_HOST_ADDR);
/*AN*/
addr.sin_family = AF_INET;
addr.sin_port = htons (port);
err = connect (fd, (struct sockaddr*) &addr, sizeof (addr));
if (err < 0)
//if (connect (fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
{
printf("ERRNO:%d", errno);
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to connect to socket %s:%d %s",
host, port, _dbus_strerror (errno));
_dbus_close (fd, NULL);
fd = -1;
return -1;
}
if (!_dbus_set_fd_nonblocking (fd, error))
{
_dbus_close (fd, NULL);
fd = -1;
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.
*
* @param host the host name to listen on
* @param port the prot to listen on
* @param error return location for errors
* @returns the listening file descriptor or -1 on error
*/
int
_dbus_listen_tcp_socket (const char *host,
dbus_uint32_t port,
DBusError *error)
{
int listen_fd;
struct sockaddr_in addr;
struct hostent *he;
struct in_addr *haddr;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (!_dbus_open_tcp_socket (&listen_fd, error))
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return -1;
}
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
he = gethostbyname (host);
if (he == NULL)
{
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to lookup hostname: %s",
host);
_dbus_close (listen_fd, NULL);
return -1;
}
haddr = ((struct in_addr *) (he->h_addr_list)[0]);
_DBUS_ZERO (addr);
memcpy (&addr.sin_addr, haddr, sizeof (struct in_addr));
addr.sin_family = AF_INET;
addr.sin_port = htons (port);
if (bind (listen_fd, (struct sockaddr*) &addr, sizeof (struct sockaddr)))
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to bind socket \"%s:%d\": %s",
host, port, _dbus_strerror (errno));
_dbus_close (listen_fd, NULL);
return -1;
}
if (listen (listen_fd, 30 /* backlog */) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to listen on socket \"%s:%d\": %s",
host, port, _dbus_strerror (errno));
_dbus_close (listen_fd, NULL);
return -1;
}
if (!_dbus_set_fd_nonblocking (listen_fd, error))
{
_dbus_close (listen_fd, NULL);
return -1;
}
return listen_fd;
}
static dbus_bool_t
write_credentials_byte (int server_fd,
DBusError *error)
{
int bytes_written;
char buf[1] = { '\0' };
#if defined(HAVE_CMSGCRED)
struct {
struct cmsghdr hdr;
struct cmsgcred cred;
} cmsg;
struct iovec iov;
struct msghdr msg;
iov.iov_base = buf;
iov.iov_len = 1;
memset (&msg, 0, sizeof (msg));
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = &cmsg;
msg.msg_controllen = sizeof (cmsg);
memset (&cmsg, 0, sizeof (cmsg));
cmsg.hdr.cmsg_len = sizeof (cmsg);
cmsg.hdr.cmsg_level = SOL_SOCKET;
cmsg.hdr.cmsg_type = SCM_CREDS;
#endif
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
again:
#if defined(HAVE_CMSGCRED)
bytes_written = sendmsg (server_fd, &msg, 0);
#else
bytes_written = write (server_fd, buf, 1);
#endif
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 (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 credentials byte\n");
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_unix_socket (int client_fd,
DBusCredentials *credentials,
DBusError *error)
{
struct msghdr msg;
struct iovec iov;
char buf;
#ifdef HAVE_CMSGCRED
struct {
struct cmsghdr hdr;
struct cmsgcred cred;
} cmsg;
#elif defined(LOCAL_CREDS)
struct {
struct cmsghdr hdr;
struct sockcred cred;
} cmsg;
#endif
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
/* The POSIX spec certainly doesn't promise this, but
* we need these assertions to fail as soon as we're wrong about
* it so we can do the porting fixups
*/
_dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
_dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
_dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
_dbus_credentials_clear (credentials);
/* Systems supporting LOCAL_CREDS are configured to have this feature
* enabled (if it does not conflict with HAVE_CMSGCRED) prior accepting
* the connection. Therefore, the received message must carry the
* credentials information without doing anything special.
*/
iov.iov_base = &buf;
iov.iov_len = 1;
memset (&msg, 0, sizeof (msg));
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
#if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
memset (&cmsg, 0, sizeof (cmsg));
msg.msg_control = &cmsg;
msg.msg_controllen = sizeof (cmsg);
#endif
again:
if (recvmsg (client_fd, &msg, 0) < 0)
{
if (errno == EINTR)
goto again;
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to read credentials byte: %s",
_dbus_strerror (errno));
return FALSE;
}
if (buf != '\0')
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"Credentials byte was not nul");
return FALSE;
}
#if defined(HAVE_CMSGCRED) || defined(LOCAL_CREDS)
if (cmsg.hdr.cmsg_len < sizeof (cmsg) || cmsg.hdr.cmsg_type != SCM_CREDS)
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"Message from recvmsg() was not SCM_CREDS");
return FALSE;
}
#endif
_dbus_verbose ("read credentials byte\n");
{
#ifdef SO_PEERCRED
struct ucred cr;
int cr_len = sizeof (cr);
if (getsockopt (client_fd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len) == 0 &&
cr_len == sizeof (cr))
{
credentials->pid = cr.pid;
credentials->uid = cr.uid;
credentials->gid = cr.gid;
}
else
{
_dbus_verbose ("Failed to getsockopt() credentials, returned len %d/%d: %s\n",
cr_len, (int) sizeof (cr), _dbus_strerror (errno));
}
#elif defined(HAVE_CMSGCRED)
credentials->pid = cmsg.cred.cmcred_pid;
credentials->uid = cmsg.cred.cmcred_euid;
credentials->gid = cmsg.cred.cmcred_groups[0];
#elif defined(LOCAL_CREDS)
credentials->pid = DBUS_PID_UNSET;
credentials->uid = cmsg.cred.sc_uid;
credentials->gid = cmsg.cred.sc_gid;
/* Since we have already got the credentials from this socket, we can
* disable its LOCAL_CREDS flag if it was ever set. */
_dbus_set_local_creds (client_fd, FALSE);
#elif defined(HAVE_GETPEEREID)
uid_t euid;
gid_t egid;
if (getpeereid (client_fd, &euid, &egid) == 0)
{
credentials->uid = euid;
credentials->gid = egid;
}
else
{
_dbus_verbose ("Failed to getpeereid() credentials: %s\n", _dbus_strerror (errno));
}
#elif defined(HAVE_GETPEERUCRED)
ucred_t * ucred = NULL;
if (getpeerucred (client_fd, &ucred) == 0)
{
credentials->pid = ucred_getpid (ucred);
credentials->uid = ucred_geteuid (ucred);
credentials->gid = ucred_getegid (ucred);
}
else
{
_dbus_verbose ("Failed to getpeerucred() credentials: %s\n", _dbus_strerror (errno));
}
if (ucred != NULL)
ucred_free (ucred);
#else /* !SO_PEERCRED && !HAVE_CMSGCRED && !HAVE_GETPEEREID && !HAVE_GETPEERUCRED */
_dbus_verbose ("Socket credentials not supported on this OS\n");
#endif
}
_dbus_verbose ("Credentials:"
" pid "DBUS_PID_FORMAT
" uid "DBUS_UID_FORMAT
" gid "DBUS_GID_FORMAT"\n",
credentials->pid,
credentials->uid,
credentials->gid);
return TRUE;
}
/**
* Sends a single nul byte with our UNIX credentials as ancillary
* data. Returns #TRUE if the data was successfully written. On
* systems that don't support sending credentials, just writes a byte,
* doesn't send any 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 can be written, 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 server_fd file descriptor for connection to server
* @param error return location for error code
* @returns #TRUE if the byte was sent
*/
dbus_bool_t
_dbus_send_credentials_unix_socket (int server_fd,
DBusError *error)
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (write_credentials_byte (server_fd, error))
return TRUE;
else
return FALSE;
}
/**
* 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;
struct sockaddr addr;
socklen_t addrlen;
addrlen = sizeof (addr);
retry:
client_fd = accept (listen_fd, &addr, &addrlen);
if (client_fd < 0)
{
if (errno == EINTR)
goto retry;
}
return client_fd;
}
/**
* 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)
{
const char *directory;
struct stat sb;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
directory = _dbus_string_get_const_data (dir);
if (stat (directory, &sb) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"%s", _dbus_strerror (errno));
return FALSE;
}
if ((S_IROTH & sb.st_mode) || (S_IWOTH & sb.st_mode) ||
(S_IRGRP & sb.st_mode) || (S_IWGRP & sb.st_mode))
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"%s directory is not private to the user", directory);
return FALSE;
}
return TRUE;
}
static dbus_bool_t
fill_user_info_from_passwd (struct passwd *p,
DBusUserInfo *info,
DBusError *error)
{
_dbus_assert (p->pw_name != NULL);
_dbus_assert (p->pw_dir != NULL);
info->uid = p->pw_uid;
info->primary_gid = p->pw_gid;
info->username = _dbus_strdup (p->pw_name);
info->homedir = _dbus_strdup (p->pw_dir);
if (info->username == NULL ||
info->homedir == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return FALSE;
}
return TRUE;
}
static dbus_bool_t
fill_user_info (DBusUserInfo *info,
dbus_uid_t uid,
const DBusString *username,
DBusError *error)
{
const char *username_c;
/* exactly one of username/uid provided */
_dbus_assert (username != NULL || uid != DBUS_UID_UNSET);
_dbus_assert (username == NULL || uid == DBUS_UID_UNSET);
info->uid = DBUS_UID_UNSET;
info->primary_gid = DBUS_GID_UNSET;
info->group_ids = NULL;
info->n_group_ids = 0;
info->username = NULL;
info->homedir = NULL;
if (username != NULL)
username_c = _dbus_string_get_const_data (username);
else
username_c = NULL;
/* For now assuming that the getpwnam() and getpwuid() flavors
* are always symmetrical, if not we have to add more configure
* checks
*/
#if defined (HAVE_POSIX_GETPWNAM_R) || defined (HAVE_NONPOSIX_GETPWNAM_R)
{
struct passwd *p;
int result;
char buf[1024];
struct passwd p_str;
p = NULL;
#ifdef HAVE_POSIX_GETPWNAM_R
if (uid != DBUS_UID_UNSET)
result = getpwuid_r (uid, &p_str, buf, sizeof (buf),
&p);
else
result = getpwnam_r (username_c, &p_str, buf, sizeof (buf),
&p);
#else
if (uid != DBUS_UID_UNSET)
p = getpwuid_r (uid, &p_str, buf, sizeof (buf));
else
p = getpwnam_r (username_c, &p_str, buf, sizeof (buf));
result = 0;
#endif /* !HAVE_POSIX_GETPWNAM_R */
if (result == 0 && p == &p_str)
{
if (!fill_user_info_from_passwd (p, info, error))
return FALSE;
}
else
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"User \"%s\" unknown or no memory to allocate password entry\n",
username_c ? username_c : "???");
_dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
return FALSE;
}
free(p->pw_dir);
}
#else /* ! HAVE_GETPWNAM_R */
{
/* I guess we're screwed on thread safety here */
struct passwd *p;
if (uid != DBUS_UID_UNSET)
p = getpwuid (uid);
else
p = getpwnam (username_c);
if (p != NULL)
{
if (!fill_user_info_from_passwd (p, info, error))
return FALSE;
}
else
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"User \"%s\" unknown or no memory to allocate password entry\n",
username_c ? username_c : "???");
_dbus_verbose ("User %s unknown\n", username_c ? username_c : "???");
return FALSE;
}
}
#endif /* ! HAVE_GETPWNAM_R */
/* Fill this in so we can use it to get groups */
username_c = info->username;
#ifdef HAVE_GETGROUPLIST
{
gid_t *buf;
int buf_count;
int i;
buf_count = 17;
buf = dbus_new (gid_t, buf_count);
if (buf == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto failed;
}
if (getgrouplist (username_c,
info->primary_gid,
buf, &buf_count) < 0)
{
gid_t *new = dbus_realloc (buf, buf_count * sizeof (buf[0]));
if (new == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
dbus_free (buf);
goto failed;
}
buf = new;
errno = 0;
if (getgrouplist (username_c, info->primary_gid, buf, &buf_count) < 0)
{
dbus_set_error (error,
_dbus_error_from_errno (errno),
"Failed to get groups for username \"%s\" primary GID "
DBUS_GID_FORMAT ": %s\n",
username_c, info->primary_gid,
_dbus_strerror (errno));
dbus_free (buf);
goto failed;
}
}
info->group_ids = dbus_new (dbus_gid_t, buf_count);
if (info->group_ids == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
dbus_free (buf);
goto failed;
}
for (i = 0; i < buf_count; ++i)
info->group_ids[i] = buf[i];
info->n_group_ids = buf_count;
dbus_free (buf);
}
#else /* HAVE_GETGROUPLIST */
{
/* We just get the one group ID */
info->group_ids = dbus_new (dbus_gid_t, 1);
if (info->group_ids == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto failed;
}
info->n_group_ids = 1;
(info->group_ids)[0] = info->primary_gid;
}
#endif /* HAVE_GETGROUPLIST */
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return TRUE;
failed:
_DBUS_ASSERT_ERROR_IS_SET (error);
return FALSE;
}
/**
* Gets user info for the given username.
*
* @param info user info object to initialize
* @param username the username
* @param error error return
* @returns #TRUE on success
*/
dbus_bool_t
_dbus_user_info_fill (DBusUserInfo *info,
const DBusString *username,
DBusError *error)
{
return fill_user_info (info, DBUS_UID_UNSET,
username, error);
}
/**
* Gets user info for the given user ID.
*
* @param info user info object to initialize
* @param uid the user ID
* @param error error return
* @returns #TRUE on success
*/
dbus_bool_t
_dbus_user_info_fill_uid (DBusUserInfo *info,
dbus_uid_t uid,
DBusError *error)
{
return fill_user_info (info, uid,
NULL, error);
}
/**
* Gets the credentials of the current process.
*
* @param credentials credentials to fill in.
*/
void
_dbus_credentials_from_current_process (DBusCredentials *credentials)
{
/* The POSIX spec certainly doesn't promise this, but
* we need these assertions to fail as soon as we're wrong about
* it so we can do the porting fixups
*/
_dbus_assert (sizeof (pid_t) <= sizeof (credentials->pid));
_dbus_assert (sizeof (uid_t) <= sizeof (credentials->uid));
_dbus_assert (sizeof (gid_t) <= sizeof (credentials->gid));
//credentials->pid = getpid ();
//credentials->uid = getuid ();
//credentials->gid = getgid (); // sachin
credentials->pid = 155;
credentials->uid = 0;
credentials->gid = 0;
}
/**
* Gets our process ID
* @returns process ID
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
unsigned long
_dbus_getpid (void)
{
return getpid ();
}
/** Gets our UID
* @returns process UID
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_uid_t
_dbus_getuid (void)
{
return getuid ();
}
#ifdef DBUS_BUILD_TESTS
/** Gets our GID
* @returns process GID
*/
dbus_gid_t
_dbus_getgid (void)
{
return getgid ();
}
#endif
/**
* 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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
int
_dbus_poll (DBusPollFD *fds,
int n_fds,
int timeout_milliseconds)
{
#ifdef HAVE_POLL
/* This big thing is a constant expression and should get optimized
* out of existence. So it's more robust than a configure check at
* no cost.
*/
if (_DBUS_POLLIN == POLLIN &&
_DBUS_POLLPRI == POLLPRI &&
_DBUS_POLLOUT == POLLOUT &&
_DBUS_POLLERR == POLLERR &&
_DBUS_POLLHUP == POLLHUP &&
_DBUS_POLLNVAL == POLLNVAL &&
sizeof (DBusPollFD) == sizeof (struct pollfd) &&
_DBUS_STRUCT_OFFSET (DBusPollFD, fd) ==
_DBUS_STRUCT_OFFSET (struct pollfd, fd) &&
_DBUS_STRUCT_OFFSET (DBusPollFD, events) ==
_DBUS_STRUCT_OFFSET (struct pollfd, events) &&
_DBUS_STRUCT_OFFSET (DBusPollFD, revents) ==
_DBUS_STRUCT_OFFSET (struct pollfd, revents))
{
return poll ((struct pollfd*) fds,
n_fds,
timeout_milliseconds);
}
else
{
/* We have to convert the DBusPollFD to an array of
* struct pollfd, poll, and convert back.
*/
_dbus_warn ("didn't implement poll() properly for this system yet\n");
return -1;
}
#else /* ! HAVE_POLL */
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);
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);
}
tv.tv_sec = timeout_milliseconds / 1000;
tv.tv_usec = (timeout_milliseconds % 1000) * 1000;
ready = select (max_fd + 1, &read_set, &write_set, &err_set,
timeout_milliseconds < 0 ? NULL : &tv);
if (ready > 0)
{
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;
}
}
#ifdef __SYMBIAN32__
// Fix OpenC select() bug, when it returns -1 with errno==EPIPE in some situations (e.g. when client process is killed
// AFTER communication is over), DBus ignores select()'s return value and reissue select(), which returns again with -1,
// so there is a busy loop.
// Correct select() implementation should not return -1 if there is an error with some fd,
// it should return that file is ready for reading and error should be detected during reading.
// The fix below just set _DBUS_POLLERR for all descriptors, so DBus checks all descriptortors and
// doesn't enter in infinite loop. _DBUS_POLLIN can't be used,
// cause DBus could start read some fd that dosn't have any data and block
//
// This code should be removed when OpenC select() behave properly.
else if(ready < 0)
{
ready = n_fds;
for (i = 0; i < n_fds; i++)
fds[i].revents = _DBUS_POLLERR;
}
#endif
return ready;
#endif
}
/**
* Get current time, as in gettimeofday().
*
* @param tv_sec return location for number of seconds
* @param tv_usec return location for number of microseconds (thousandths)
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
_dbus_get_current_time (long *tv_sec,
long *tv_usec)
{
struct timeval t;
gettimeofday (&t, NULL);
if (tv_sec)
*tv_sec = t.tv_sec;
if (tv_usec)
*tv_usec = t.tv_usec;
}
/**
* Appends the contents of the given file to the string,
* returning error code. At the moment, won't open a file
* more than a megabyte in size.
*
* @param str the string to append to
* @param filename filename to load
* @param error place to set an error
* @returns #FALSE if error was set
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_bool_t
_dbus_file_get_contents (DBusString *str,
const DBusString *filename,
DBusError *error)
{
int fd;
struct stat sb;
int orig_len;
int total;
const char *filename_c;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
filename_c = _dbus_string_get_const_data (filename);
/* O_BINARY useful on Cygwin */
fd = open (filename_c, O_RDONLY | O_BINARY);
if (fd < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to open \"%s\": %s",
filename_c,
_dbus_strerror (errno));
return FALSE;
}
if (fstat (fd, &sb) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to stat \"%s\": %s",
filename_c,
_dbus_strerror (errno));
_dbus_verbose ("fstat() failed: %s",
_dbus_strerror (errno));
_dbus_close (fd, NULL);
return FALSE;
}
if (sb.st_size > _DBUS_ONE_MEGABYTE)
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"File size %lu of \"%s\" is too large.",
(unsigned long) sb.st_size, filename_c);
_dbus_close (fd, NULL);
return FALSE;
}
total = 0;
orig_len = _dbus_string_get_length (str);
#ifdef __SYMBIAN32__
{
int is_reg = S_ISREG (sb.st_mode);
}
#endif
if (sb.st_size > 0 && S_ISREG (sb.st_mode))
{
int bytes_read;
while (total < (int) sb.st_size)
{
bytes_read = _dbus_read (fd, str,
sb.st_size - total);
if (bytes_read <= 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Error reading \"%s\": %s",
filename_c,
_dbus_strerror (errno));
_dbus_verbose ("read() failed: %s",
_dbus_strerror (errno));
_dbus_close (fd, NULL);
_dbus_string_set_length (str, orig_len);
return FALSE;
}
else
total += bytes_read;
}
_dbus_close (fd, NULL);
return TRUE;
}
else if (sb.st_size != 0)
{
_dbus_verbose ("Can only open regular files at the moment.\n");
dbus_set_error (error, DBUS_ERROR_FAILED,
"\"%s\" is not a regular file",
filename_c);
_dbus_close (fd, NULL);
return FALSE;
}
else
{
_dbus_close (fd, NULL);
return TRUE;
}
}
/**
* Writes a string out to a file. If the file exists,
* it will be atomically overwritten by the new data.
*
* @param str the string to write out
* @param filename the file to save string to
* @param error error to be filled in on failure
* @returns #FALSE on failure
*/
dbus_bool_t
_dbus_string_save_to_file (const DBusString *str,
const DBusString *filename,
DBusError *error)
{
int fd;
int bytes_to_write;
const char *filename_c;
DBusString tmp_filename;
const char *tmp_filename_c;
int total;
dbus_bool_t need_unlink;
dbus_bool_t retval;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
fd = -1;
retval = FALSE;
need_unlink = FALSE;
if (!_dbus_string_init (&tmp_filename))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return FALSE;
}
if (!_dbus_string_copy (filename, 0, &tmp_filename, 0))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
_dbus_string_free (&tmp_filename);
return FALSE;
}
if (!_dbus_string_append (&tmp_filename, "."))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
_dbus_string_free (&tmp_filename);
return FALSE;
}
#define N_TMP_FILENAME_RANDOM_BYTES 8
if (!_dbus_generate_random_ascii (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
_dbus_string_free (&tmp_filename);
return FALSE;
}
filename_c = _dbus_string_get_const_data (filename);
tmp_filename_c = _dbus_string_get_const_data (&tmp_filename);
fd = open (tmp_filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
0600);
if (fd < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not create %s: %s", tmp_filename_c,
_dbus_strerror (errno));
goto out;
}
need_unlink = TRUE;
total = 0;
bytes_to_write = _dbus_string_get_length (str);
while (total < bytes_to_write)
{
int bytes_written;
bytes_written = _dbus_write (fd, str, total,
bytes_to_write - total);
if (bytes_written <= 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not write to %s: %s", tmp_filename_c,
_dbus_strerror (errno));
goto out;
}
total += bytes_written;
}
if (!_dbus_close (fd, NULL))
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not close file %s: %s",
tmp_filename_c, _dbus_strerror (errno));
goto out;
}
fd = -1;
if (rename (tmp_filename_c, filename_c) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not rename %s to %s: %s",
tmp_filename_c, filename_c,
_dbus_strerror (errno));
goto out;
}
need_unlink = FALSE;
retval = TRUE;
out:
/* close first, then unlink, to prevent ".nfs34234235" garbage
* files
*/
if (fd >= 0)
_dbus_close (fd, NULL);
if (need_unlink && unlink (tmp_filename_c) < 0)
_dbus_verbose ("Failed to unlink temp file %s: %s\n",
tmp_filename_c, _dbus_strerror (errno));
_dbus_string_free (&tmp_filename);
if (!retval)
_DBUS_ASSERT_ERROR_IS_SET (error);
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)
{
const char *filename_c;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
filename_c = _dbus_string_get_const_data (filename);
if (chmod (filename_c, 0644) == -1)
{
dbus_set_error (error,
DBUS_ERROR_FAILED,
"Could not change permissions of file %s: %s\n",
filename_c,
_dbus_strerror (errno));
return FALSE;
}
return TRUE;
}
/** Creates the given file, failing if the file already exists.
*
* @param filename the filename
* @param error error location
* @returns #TRUE if we created the file and it didn't exist
*/
dbus_bool_t
_dbus_create_file_exclusively (const DBusString *filename,
DBusError *error)
{
int fd;
const char *filename_c;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
filename_c = _dbus_string_get_const_data (filename);
//#ifdef __SYMBIAN32__
// file can exist in __SYMBIAN32__
// fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL,
// 0600);
//#else
fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
0600);
//#endif
if (fd < 0)
{
dbus_set_error (error,
DBUS_ERROR_FAILED,
"Could not create file %s: %s\n",
filename_c,
_dbus_strerror (errno));
return FALSE;
}
if (!_dbus_close (fd, NULL))
{
dbus_set_error (error,
DBUS_ERROR_FAILED,
"Could not close file %s: %s\n",
filename_c,
_dbus_strerror (errno));
return FALSE;
}
return TRUE;
}
/**
* Deletes the given file.
*
* @param filename the filename
* @param error error location
*
* @returns #TRUE if unlink() succeeded
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
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 (unlink (filename_c) < 0)
{
dbus_set_error (error, DBUS_ERROR_FAILED,
"Failed to delete file %s: %s\n",
filename_c, _dbus_strerror (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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
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 (mkdir (filename_c, 0700) < 0)
{
if (errno == EEXIST)
return TRUE;
dbus_set_error (error, DBUS_ERROR_FAILED,
"Failed to create directory %s: %s\n",
filename_c, _dbus_strerror (errno));
return FALSE;
}
else
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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
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);
file_starts_with_slash = '/' == _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));
}
/** 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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
_dbus_sleep_milliseconds (int milliseconds)
{
#ifdef HAVE_NANOSLEEP
struct timespec req;
struct timespec rem;
req.tv_sec = milliseconds / MILLISECONDS_PER_SECOND;
req.tv_nsec = (milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
rem.tv_sec = 0;
rem.tv_nsec = 0;
while (nanosleep (&req, &rem) < 0 && errno == EINTR)
req = rem;
#elif defined (HAVE_USLEEP)
usleep (milliseconds * MICROSECONDS_PER_MILLISECOND);
#else /* ! HAVE_USLEEP */
sleep (MAX (milliseconds / 1000, 1));
#endif
}
static dbus_bool_t
_dbus_generate_pseudorandom_bytes (DBusString *str,
int n_bytes)
{
int old_len;
char *p;
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);
_dbus_generate_pseudorandom_bytes_buffer (p, n_bytes);
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;
int fd;
/* FALSE return means "no memory", if it could
* mean something else then we'd need to return
* a DBusError. So we always fall back to pseudorandom
* if the I/O fails.
*/
old_len = _dbus_string_get_length (str);
fd = -1;
/* note, urandom on linux will fall back to pseudorandom */
fd = open ("/dev/urandom", O_RDONLY);
if (fd < 0)
return _dbus_generate_pseudorandom_bytes (str, n_bytes);
if (_dbus_read (fd, str, n_bytes) != n_bytes)
{
_dbus_close (fd, NULL);
_dbus_string_set_length (str, old_len);
return _dbus_generate_pseudorandom_bytes (str, n_bytes);
}
_dbus_verbose ("Read %d bytes from /dev/urandom\n",
n_bytes);
_dbus_close (fd, NULL);
return TRUE;
}
/**
* Exit the process, returning the given value.
*
* @param code the exit code
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
_dbus_exit (int code)
{
_exit (code);
}
/**
* A wrapper around strerror() because some platforms
* may be lame and not have strerror().
*
* @param error_number errno.
* @returns error description.
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
const char*
_dbus_strerror (int error_number)
{
const char *msg;
msg = strerror (error_number);
if (msg == NULL)
msg = "unknown";
return msg;
}
/**
* signal (SIGPIPE, SIG_IGN);
*/
void
_dbus_disable_sigpipe (void)
{
#ifndef __SYMBIAN32__
signal (SIGPIPE, SIG_IGN);
#endif
}
/**
* 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
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
void
_dbus_fd_set_close_on_exec (int fd)
{
int val;
val = fcntl (fd, F_GETFD, 0);
if (val < 0)
return;
val |= FD_CLOEXEC;
fcntl (fd, F_SETFD, val);
}
/**
* Closes a file descriptor.
*
* @param fd the file descriptor
* @param error error object
* @returns #FALSE if error set
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_bool_t
_dbus_close (int fd,
DBusError *error)
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
again:
if (close (fd) < 0)
{
if (errno == EINTR)
goto again;
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not close fd %d", fd);
return FALSE;
}
return TRUE;
}
/**
* 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 fd,
DBusError *error)
{
int val;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
val = fcntl (fd, F_GETFL, 0);
if (val < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to get flags from file descriptor %d: %s",
fd, _dbus_strerror (errno));
_dbus_verbose ("Failed to get flags for fd %d: %s\n", fd,
_dbus_strerror (errno));
return FALSE;
}
if (fcntl (fd, F_SETFL, val | O_NONBLOCK) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to set nonblocking flag of file descriptor %d: %s",
fd, _dbus_strerror (errno));
_dbus_verbose ("Failed to set fd %d nonblocking: %s\n",
fd, _dbus_strerror (errno));
return FALSE;
}
return TRUE;
}
/**
* On GNU libc systems, print a crude backtrace to stderr. On other
* systems, print "no backtrace support" and block for possible gdb
* attachment if an appropriate environment variable is set.
*/
void
_dbus_print_backtrace (void)
{
#if defined (HAVE_BACKTRACE) && defined (DBUS_BUILT_R_DYNAMIC)
void *bt[500];
int bt_size;
int i;
char **syms;
bt_size = backtrace (bt, 500);
syms = backtrace_symbols (bt, bt_size);
i = 0;
while (i < bt_size)
{
/* don't use dbus_warn since it can _dbus_abort() */
fprintf (stderr, " %s\n", syms[i]);
++i;
}
fflush (stderr);
free (syms);
#elif defined (HAVE_BACKTRACE) && ! defined (DBUS_BUILT_R_DYNAMIC)
fprintf (stderr, " D-Bus not built with -rdynamic so unable to print a backtrace\n");
#else
fprintf (stderr, " D-Bus not compiled with backtrace support so unable to print a backtrace\n");
#endif
}
/**
* Creates a full-duplex pipe (as in socketpair()).
* Sets both ends of the pipe nonblocking.
*
* @todo libdbus only uses this for the debug-pipe server, so in
* principle it could be in dbus-sysdeps-util.c, except that
* dbus-sysdeps-util.c isn't in libdbus when tests are enabled and the
* debug-pipe server is used.
*
* @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)
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_bool_t
_dbus_full_duplex_pipe (int *fd1,
int *fd2,
dbus_bool_t blocking,
DBusError *error)
{
#ifdef HAVE_SOCKETPAIR
int fds[2];
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (socketpair (AF_UNIX, SOCK_STREAM, 0, fds) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not create full-duplex pipe");
return FALSE;
}
if (!blocking &&
(!_dbus_set_fd_nonblocking (fds[0], NULL) ||
!_dbus_set_fd_nonblocking (fds[1], NULL)))
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Could not set full-duplex pipe nonblocking");
_dbus_close (fds[0], NULL);
_dbus_close (fds[1], NULL);
return FALSE;
}
*fd1 = fds[0];
*fd2 = fds[1];
_dbus_verbose ("full-duplex pipe %d <-> %d\n",
*fd1, *fd2);
return TRUE;
#else
_dbus_warn ("_dbus_full_duplex_pipe() not implemented on this OS\n");
dbus_set_error (error, DBUS_ERROR_FAILED,
"_dbus_full_duplex_pipe() not implemented on this OS");
return FALSE;
#endif
}
/**
* Measure the length of the given format string and arguments,
* not including the terminating nul.
*
* @param format a printf-style format string
* @param args arguments for the format string
* @returns length of the given format string and args
*/
int
_dbus_printf_string_upper_bound (const char *format,
va_list args)
{
char c;
return vsnprintf (&c, 1, format, args);
}
/**
* 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
*/
#if EMULATOR
GET_STATIC_VAR_FROM_TLS(tmpdir,dbus_sysdeps_unix,const char*)
#define tmpdir (*GET_DBUS_WSD_VAR_NAME(tmpdir,dbus_sysdeps_unix,s)())
#endif
#ifdef __SYMBIAN32__
EXPORT_C
#endif
const char*
_dbus_get_tmpdir(void)
{
#ifndef EMULATOR
static const char* tmpdir = NULL;
#endif
if (tmpdir == NULL)
{
/* TMPDIR is what glibc uses, then
* glibc falls back to the P_tmpdir macro which
* just expands to "/tmp"
*/
if (tmpdir == NULL)
tmpdir = getenv("TMPDIR");
/* These two env variables are probably
* broken, but maybe some OS uses them?
*/
if (tmpdir == NULL)
tmpdir = getenv("TMP");
if (tmpdir == NULL)
tmpdir = getenv("TEMP");
/* And this is the sane fallback. */
if (tmpdir == NULL)
#ifdef __SYMBIAN32__
// TODO Check how Symbian handles temporary files
tmpdir = DBUS_DATADIR;
#else
tmpdir = "/tmp";
#endif
}
_dbus_assert(tmpdir != NULL);
return tmpdir;
}
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/select.h>
#include <stdlib.h>
#include <string.h>
/*
void look(int fd);
void spit(int fd);
void look(int fd)
{
fd_set readfds, excepfds;
FD_ZERO(&readfds);
FD_ZERO(&excepfds);
FD_SET(fd, &readfds);
FD_SET(fd, &excepfds);
if (select(fd+1, &readfds, NULL, &excepfds, NULL) < 0) {
perror("select");
exit(1);
}
if (FD_ISSET(fd, &excepfds))
puts("Exception on pipe");
if (FD_ISSET(fd, &readfds))
puts("pipe available for read");
}
void
spit(int fd)
{
char buf[512];
int n = read(fd, buf, sizeof(buf));
buf[n] = '\0';
printf("Read %d bytes from pipe: '%s'\n", n, buf);
}
*/
/**
* Determines the address of the session bus by querying a
* platform-specific method.
*
* If successful, returns #TRUE and appends the address to @p
* address. If a failure happens, returns #FALSE and
* sets an error in @p error.
*
* @param address a DBusString where the address can be stored
* @param error a DBusError to store the error in case of failure
* @returns #TRUE on success, #FALSE if an error happened
*/
dbus_bool_t
_dbus_get_autolaunch_address (DBusString *address,
DBusError *error)
{
#ifdef __SYMBIAN32__
/**************************************************************
// TODO
// Its is not clear, what this should do
// Is it needed to create read sub process or not
dbus_bool_t retval;
DBusString uuid;
retval = FALSE;
// do someting
// uuid is needed for sure, daemonizing maybe not
retval = TRUE;
_dbus_string_init (&uuid);
if (!_dbus_get_local_machine_uuid_encoded (&uuid))
{
_DBUS_SET_OOM (error);
goto out;
}
// TODO
// getting uuid is not enough. We must save it into internal data
// Untill machanism autolauch makes this retval is FALSE and daemon is broken!
// retval = TRUE;
retval = FALSE;
out:
if (retval)
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
else
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_string_free (&uuid);
return retval;
some example code
Tint err;
RProcess process;
err = process.Create(_L("c:\\test.exe"),_L("para1"));
process.Resume();
TRequestStatus status
process.Logon(status);
User::WaitForRequest(status);
//process has finished
err = status.Int();
**********************************************************************************************/
pid_t pid;
int ret;
int status;
int orig_len;
int i;
DBusString uuid;
dbus_bool_t retval;
FILE* ChildProcessStream;
char *pav;
#ifdef __SYMBIAN32__
char daemonpath[35];
FILE *fp;
#endif
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
retval = FALSE;
_dbus_string_init (&uuid);
if (!_dbus_get_local_machine_uuid_encoded (&uuid))
{
_DBUS_SET_OOM (error);
goto out;
}
orig_len = _dbus_string_get_length (address);
#ifdef __SYMBIAN32__
#ifndef __WINSCW__
daemonpath[0]= 'z';//Default
daemonpath[0]=getDaemonDriveLetter();
daemonpath[1]=':';
daemonpath[2]='\0';
// strcat(daemonpath,"\\sys\\bin\\dbus-daemon.exe");
// getDaemonDriveLetter(&daemonpath[0]);
strcat(daemonpath,"\\sys\\bin\\dbusdaemon.exe");
#endif
#ifdef __WINSCW__
ChildProcessStream =popen("z:\\sys\\bin\\dbusdaemon.exe", "r");
#else
ChildProcessStream =popen(daemonpath, "r");
// ChildProcessStream =popen(daemonpath, "r");
#endif
#endif
if (ChildProcessStream == NULL)
{
dbus_set_error (error, DBUS_ERROR_SPAWN_EXEC_FAILED,
"Failed to execute dbus-launch to autolaunch D-Bus session,ChildProcessStream is NULL");
goto out;
}
else
{
// Use a file descriptor rather than a stream
int ChildProcessFD = fileno(ChildProcessStream);
//_dbus_string_append(address,DBUS_SYMBIAN_SESSION_BUS_DEFAULT_ADDRESS);
/* If the bus address needs to be read from the bus daemon, comment the above line
and uncomment the below line*/
ret = 0;
ret = _dbus_read (ChildProcessFD, address, 1024);
if (_dbus_string_get_length (address) == orig_len)
{
/* The process ended with error */
_dbus_string_set_length (address, orig_len);
dbus_set_error (error, DBUS_ERROR_SPAWN_EXEC_FAILED,
"Failed to execute dbus-launch to autolaunch D-Bus session");
goto out;
}
retval = TRUE;
out:
if (retval)
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
else
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_string_free (&uuid);
// pclose(ChildProcessStream);
return retval;
}
#else
static char *argv[5];
int address_pipe[2];
pid_t pid;
int ret;
int status;
int orig_len;
int i;
DBusString uuid;
dbus_bool_t retval;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
retval = FALSE;
_dbus_string_init (&uuid);
if (!_dbus_get_local_machine_uuid_encoded (&uuid))
{
_DBUS_SET_OOM (error);
goto out;
}
i = 0;
argv[i] = "dbus-launch";
++i;
argv[i] = "--autolaunch";
++i;
argv[i] = _dbus_string_get_data (&uuid);
++i;
argv[i] = "--binary-syntax";
++i;
argv[i] = NULL;
++i;
_dbus_assert (i == _DBUS_N_ELEMENTS (argv));
orig_len = _dbus_string_get_length (address);
#define READ_END 0
#define WRITE_END 1
if (pipe (address_pipe) < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to create a pipe: %s",
_dbus_strerror (errno));
_dbus_verbose ("Failed to create a pipe to call dbus-launch: %s\n",
_dbus_strerror (errno));
goto out;
}
pid = fork ();
if (pid < 0)
{
dbus_set_error (error, _dbus_error_from_errno (errno),
"Failed to fork(): %s",
_dbus_strerror (errno));
_dbus_verbose ("Failed to fork() to call dbus-launch: %s\n",
_dbus_strerror (errno));
goto out;
}
if (pid == 0)
{
/* child process */
int fd = open ("/dev/null", O_RDWR);
if (fd == -1)
/* huh?! can't open /dev/null? */
_exit (1);
/* set-up stdXXX */
close (address_pipe[READ_END]);
close (0); /* close stdin */
close (1); /* close stdout */
close (2); /* close stderr */
if (dup2 (fd, 0) == -1)
_exit (1);
if (dup2 (address_pipe[WRITE_END], 1) == -1)
_exit (1);
if (dup2 (fd, 2) == -1)
_exit (1);
close (fd);
close (address_pipe[WRITE_END]);
execv (DBUS_BINDIR "/dbus-launch", argv);
/* failed, try searching PATH */
execvp ("dbus-launch", argv);
/* still nothing, we failed */
_exit (1);
}
/* parent process */
close (address_pipe[WRITE_END]);
ret = 0;
do
{
ret = _dbus_read (address_pipe[READ_END], address, 1024);
}
while (ret > 0);
/* reap the child process to avoid it lingering as zombie */
do
{
ret = waitpid (pid, &status, 0);
}
while (ret == -1 && errno == EINTR);
/* We succeeded if the process exited with status 0 and
anything was read */
if (!WIFEXITED (status) || WEXITSTATUS (status) != 0 ||
_dbus_string_get_length (address) == orig_len)
{
/* The process ended with error */
_dbus_string_set_length (address, orig_len);
dbus_set_error (error, DBUS_ERROR_SPAWN_EXEC_FAILED,
"Failed to execute dbus-launch to autolaunch D-Bus session");
goto out;
}
retval = TRUE;
out:
if (retval)
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
else
_DBUS_ASSERT_ERROR_IS_SET (error);
_dbus_string_free (&uuid);
return retval;
#endif
}
/**
* Reads the uuid of the machine we're running on from
* the dbus configuration. Optionally try to create it
* (only root can do this usually).
*
* On UNIX, reads a file that gets created by dbus-uuidgen
* in a post-install script. On Windows, if there's a standard
* machine uuid we could just use that, but I can't find one
* with the right properties (the hardware profile guid can change
* without rebooting I believe). If there's no standard one
* we might want to use the registry instead of a file for
* this, and I'm not sure how we'd ensure the uuid gets created.
*
* @param machine_id guid to init with the machine's uuid
* @param create_if_not_found try to create the uuid if it doesn't exist
* @param error the error return
* @returns #FALSE if the error is set
*/
dbus_bool_t
_dbus_read_local_machine_uuid (DBusGUID *machine_id,
dbus_bool_t create_if_not_found,
DBusError *error)
{
DBusString filename;
_dbus_string_init_const (&filename, DBUS_MACHINE_UUID_FILE);
return _dbus_read_uuid_file (&filename, machine_id, create_if_not_found, error);
}
#ifdef __SYMBIAN32__
#define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "\\dbus1\\services"
#else
#define DBUS_UNIX_STANDARD_SESSION_SERVICEDIR "/dbus-1/services"
#endif
static dbus_bool_t
split_paths_and_append (DBusString *dirs,
const char *suffix,
DBusList **dir_list)
{
/* split on colon (:) */
int start;
int i;
int len;
char *cpath;
const DBusString file_suffix;
start = 0;
i = 0;
#ifdef __SYMBIAN32__
_dbus_string_init_const ((DBusString*)&file_suffix, suffix);
#else
_dbus_string_init_const (&file_suffix, suffix);
#endif
len = _dbus_string_get_length (dirs);
while (_dbus_string_find (dirs, start, ":", &i))
{
DBusString path;
if (!_dbus_string_init (&path))
goto oom;
if (!_dbus_string_copy_len (dirs,
start,
i - start,
&path,
0))
{
_dbus_string_free (&path);
goto oom;
}
_dbus_string_chop_white (&path);
/* check for an empty path */
if (_dbus_string_get_length (&path) == 0)
goto next;
if (!_dbus_concat_dir_and_file (&path,
&file_suffix))
{
_dbus_string_free (&path);
goto oom;
}
if (!_dbus_string_copy_data(&path, &cpath))
{
_dbus_string_free (&path);
goto oom;
}
if (!_dbus_list_append (dir_list, cpath))
{
_dbus_string_free (&path);
dbus_free (cpath);
goto oom;
}
next:
_dbus_string_free (&path);
start = i + 1;
}
if (start != len)
{
DBusString path;
if (!_dbus_string_init (&path))
goto oom;
if (!_dbus_string_copy_len (dirs,
start,
len - start,
&path,
0))
{
_dbus_string_free (&path);
goto oom;
}
if (!_dbus_concat_dir_and_file (&path,
&file_suffix))
{
_dbus_string_free (&path);
goto oom;
}
if (!_dbus_string_copy_data(&path, &cpath))
{
_dbus_string_free (&path);
goto oom;
}
if (!_dbus_list_append (dir_list, cpath))
{
_dbus_string_free (&path);
dbus_free (cpath);
goto oom;
}
_dbus_string_free (&path);
}
return TRUE;
oom:
_dbus_list_foreach (dir_list, (DBusForeachFunction)dbus_free, NULL);
_dbus_list_clear (dir_list);
return FALSE;
}
/**
* Returns the standard directories for a session bus to look for service
* activation files
*
* On UNIX this should be the standard xdg freedesktop.org data directories:
*
* XDG_DATA_HOME=${XDG_DATA_HOME-$HOME/.local/share}
* XDG_DATA_DIRS=${XDG_DATA_DIRS-/usr/local/share:/usr/share}
*
* and
*
* DBUS_DATADIR
*
* @param dirs the directory list we are returning
* @returns #FALSE on OOM
*/
#ifdef __SYMBIAN32__
EXPORT_C
#endif
dbus_bool_t
_dbus_get_standard_session_servicedirs (DBusList **dirs)
{
#ifndef __SYMBIAN32__
const char *xdg_data_home;
const char *xdg_data_dirs;
DBusString servicedir_path;
if (!_dbus_string_init (&servicedir_path))
return FALSE;
xdg_data_home = _dbus_getenv ("XDG_DATA_HOME");
xdg_data_dirs = _dbus_getenv ("XDG_DATA_DIRS");
if (xdg_data_dirs != NULL)
{
if (!_dbus_string_append (&servicedir_path, xdg_data_dirs))
goto oom;
if (!_dbus_string_append (&servicedir_path, ":"))
goto oom;
}
else
{
if (!_dbus_string_append (&servicedir_path, "/usr/local/share:/usr/share:"))
goto oom;
}
/*
* add configured datadir to defaults
* this may be the same as an xdg dir
* however the config parser should take
* care of duplicates
*/
if (!_dbus_string_append (&servicedir_path, DBUS_DATADIR":"))
goto oom;
if (xdg_data_home != NULL)
{
if (!_dbus_string_append (&servicedir_path, xdg_data_home))
goto oom;
}
else
{
const DBusString *homedir;
const DBusString local_share;
if (!_dbus_homedir_from_current_process (&homedir))
goto oom;
if (!_dbus_string_append (&servicedir_path, _dbus_string_get_const_data (homedir)))
goto oom;
//#ifdef __SYMBIAN32__
_dbus_string_init_const ((DBusString*)&local_share, "/.local/share");
//#else
_dbus_string_init_const (&local_share, "/.local/share");
//#endif
if (!_dbus_concat_dir_and_file (&servicedir_path, &local_share))
goto oom;
}
if (!split_paths_and_append (&servicedir_path,
DBUS_UNIX_STANDARD_SESSION_SERVICEDIR,
dirs))
goto oom;
_dbus_string_free (&servicedir_path);
return TRUE;
oom:
_dbus_string_free (&servicedir_path);
return FALSE;
#else
#if defined (__SYMBIAN32__) && (! defined __WINSCW__)
if (!AppendDir(dirs))
{
goto oom;
}
#else
DBusString servicedir_path;
char *cpath;
if (!_dbus_string_init (&servicedir_path))
return FALSE;
if (!_dbus_string_append (&servicedir_path,DBUS_DATADIR))
goto oom;
if (!_dbus_string_append (&servicedir_path,DBUS_UNIX_STANDARD_SESSION_SERVICEDIR))
goto oom;
if (!_dbus_string_copy_data(&servicedir_path, &cpath))
{
goto oom;
}
if (!_dbus_list_append (dirs, cpath))
{
dbus_free (cpath);
goto oom;
}
_dbus_string_free (&servicedir_path);
#endif
return TRUE;
oom:
_dbus_list_foreach (dirs, (DBusForeachFunction)dbus_free, NULL);
_dbus_list_clear (dirs);
#ifndef __SYMBIAN32__
_dbus_string_free (&servicedir_path);
#endif
return FALSE;
#endif
}
/* tests in dbus-sysdeps-util.c */