-/* -*- mode: C; c-file-style: "gnu" -*- */
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-sysdeps.c Wrappers around system/libc features shared between UNIX and Windows (internal to D-Bus implementation)
*
* Copyright (C) 2002, 2003, 2006 Red Hat, Inc.
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
+#include <config.h>
#include "dbus-internals.h"
#include "dbus-sysdeps.h"
#include "dbus-threads.h"
#include "dbus-protocol.h"
#include "dbus-string.h"
+#include "dbus-list.h"
/* NOTE: If you include any unix/windows-specific headers here, you are probably doing something
* wrong and should be putting some code in dbus-sysdeps-unix.c or dbus-sysdeps-win.c.
*
* These are the standard ANSI C headers...
*/
+#if HAVE_LOCALE_H
#include <locale.h>
+#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
-/* This is UNIX-specific (on windows it's just in stdlib.h I believe)
- * but OK since the same stuff does exist on Windows in stdlib.h
- * and covered by a configure check.
- */
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
_DBUS_DEFINE_GLOBAL_LOCK (win_fds);
_DBUS_DEFINE_GLOBAL_LOCK (sid_atom_cache);
+_DBUS_DEFINE_GLOBAL_LOCK (system_users);
+
+#ifdef DBUS_WIN
+ #include <stdlib.h>
+#elif (defined __APPLE__)
+# include <crt_externs.h>
+# define environ (*_NSGetEnviron())
+#else
+extern char **environ;
+#endif
/**
* @defgroup DBusSysdeps Internal system-dependent API
if (s && *s)
{
/* don't use _dbus_warn here since it can _dbus_abort() */
- fprintf (stderr, " Process %lu sleeping for gdb attach\n", (unsigned long) _dbus_getpid());
+ fprintf (stderr, " Process %lu sleeping for gdb attach\n", _dbus_pid_for_log ());
_dbus_sleep_milliseconds (1000 * 180);
}
* will get upset about.
*/
- putenv_value = malloc (len + 1);
+ putenv_value = malloc (len + 2);
if (putenv_value == NULL)
return FALSE;
strcpy (putenv_value, varname);
+#if defined(DBUS_WIN)
+ strcat (putenv_value, "=");
+#endif
return (putenv (putenv_value) == 0);
#endif
return getenv (varname);
}
+/**
+ * Wrapper for clearenv().
+ *
+ * @returns #TRUE on success.
+ */
+dbus_bool_t
+_dbus_clearenv (void)
+{
+ dbus_bool_t rc = TRUE;
+
+#ifdef HAVE_CLEARENV
+ if (clearenv () != 0)
+ rc = FALSE;
+#else
+
+ if (environ != NULL)
+ environ[0] = NULL;
+#endif
+
+ return rc;
+}
+
+/**
+ * Gets a #NULL-terminated list of key=value pairs from the
+ * environment. Use dbus_free_string_array to free it.
+ *
+ * @returns the environment or #NULL on OOM
+ */
+char **
+_dbus_get_environment (void)
+{
+ int i, length;
+ char **environment;
+
+ _dbus_assert (environ != NULL);
+
+ for (length = 0; environ[length] != NULL; length++);
+
+ /* Add one for NULL */
+ length++;
+
+ environment = dbus_new0 (char *, length);
+
+ if (environment == NULL)
+ return NULL;
+
+ for (i = 0; environ[i] != NULL; i++)
+ {
+ environment[i] = _dbus_strdup (environ[i]);
+
+ if (environment[i] == NULL)
+ break;
+ }
+
+ if (environ[i] != NULL)
+ {
+ dbus_free_string_array (environment);
+ environment = NULL;
+ }
+
+ return environment;
+}
+
+/**
+ * Split paths into a list of char strings
+ *
+ * @param dirs string with pathes
+ * @param suffix string concated to each path in dirs
+ * @param dir_list contains a list of splitted pathes
+ * return #TRUE is pathes could be splittes,#FALSE in oom case
+ */
+dbus_bool_t
+_dbus_split_paths_and_append (DBusString *dirs,
+ const char *suffix,
+ DBusList **dir_list)
+{
+ int start;
+ int i;
+ int len;
+ char *cpath;
+ DBusString file_suffix;
+
+ start = 0;
+ i = 0;
+
+ _dbus_string_init_const (&file_suffix, suffix);
+
+ len = _dbus_string_get_length (dirs);
+
+ while (_dbus_string_find (dirs, start, _DBUS_PATH_SEPARATOR, &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;
+}
+
/** @} */
/**
_dbus_string_get_length (str) - start);
end = NULL;
- errno = 0;
+ _dbus_set_errno_to_zero ();
v = strtol (p, &end, 0);
if (end == NULL || end == p || errno != 0)
return FALSE;
_dbus_string_get_length (str) - start);
end = NULL;
- errno = 0;
+ _dbus_set_errno_to_zero ();
v = strtoul (p, &end, 0);
if (end == NULL || end == p || errno != 0)
return FALSE;
ascii_strtod (const char *nptr,
char **endptr)
{
+ /* FIXME: The Win32 C library's strtod() doesn't handle hex.
+ * Presumably many Unixes don't either.
+ */
+
char *fail_pos;
double val;
struct lconv *locale_data;
fail_pos = NULL;
+#if HAVE_LOCALECONV
locale_data = localeconv ();
decimal_point = locale_data->decimal_point;
- decimal_point_len = strlen (decimal_point);
+#else
+ decimal_point = ".";
+#endif
+ decimal_point_len = strlen (decimal_point);
_dbus_assert (decimal_point_len != 0);
decimal_point_pos = NULL;
/* Set errno to zero, so that we can distinguish zero results
and underflows */
- errno = 0;
+ _dbus_set_errno_to_zero ();
if (decimal_point_pos)
{
p = _dbus_string_get_const_data_len (str, start,
_dbus_string_get_length (str) - start);
+ /* parsing hex works on linux but isn't portable, so intercept it
+ * here to get uniform behavior.
+ */
+ if (p[0] == '0' && (p[1] == 'x' || p[1] == 'X'))
+ return FALSE;
+
end = NULL;
- errno = 0;
+ _dbus_set_errno_to_zero ();
v = ascii_strtod (p, &end);
if (end == NULL || end == p || errno != 0)
return FALSE;
* @{
*/
-/**
- * Frees the members of info
- * (but not info itself)
- * @param info the user info struct
- */
-void
-_dbus_user_info_free (DBusUserInfo *info)
-{
- dbus_free (info->group_ids);
- dbus_free (info->username);
- dbus_free (info->homedir);
-}
-
-/**
- * Frees the members of info (but not info itself).
- *
- * @param info the group info
- */
-void
-_dbus_group_info_free (DBusGroupInfo *info)
-{
- dbus_free (info->groupname);
-}
-
-/**
- * Sets fields in DBusCredentials to DBUS_PID_UNSET,
- * DBUS_UID_UNSET, DBUS_GID_UNSET.
- *
- * @param credentials the credentials object to fill in
- */
-void
-_dbus_credentials_clear (DBusCredentials *credentials)
-{
- credentials->pid = DBUS_PID_UNSET;
- credentials->uid = DBUS_UID_UNSET;
- credentials->gid = DBUS_GID_UNSET;
-}
-
-/**
- * Checks whether the provided_credentials are allowed to log in
- * as the expected_credentials.
- *
- * @param expected_credentials credentials we're trying to log in as
- * @param provided_credentials credentials we have
- * @returns #TRUE if we can log in
- */
-dbus_bool_t
-_dbus_credentials_match (const DBusCredentials *expected_credentials,
- const DBusCredentials *provided_credentials)
-{
- if (provided_credentials->uid == DBUS_UID_UNSET)
- return FALSE;
- else if (expected_credentials->uid == DBUS_UID_UNSET)
- return FALSE;
- else if (provided_credentials->uid == 0)
- return TRUE;
- else if (provided_credentials->uid == expected_credentials->uid)
- return TRUE;
- else
- return FALSE;
-}
-
-_DBUS_DEFINE_GLOBAL_LOCK (atomic);
-
-#ifdef DBUS_USE_ATOMIC_INT_486
-/* Taken from CVS version 1.7 of glibc's sysdeps/i386/i486/atomicity.h */
-/* Since the asm stuff here is gcc-specific we go ahead and use "inline" also */
-static inline dbus_int32_t
-atomic_exchange_and_add (DBusAtomic *atomic,
- volatile dbus_int32_t val)
-{
- register dbus_int32_t result;
-
- __asm__ __volatile__ ("lock; xaddl %0,%1"
- : "=r" (result), "=m" (atomic->value)
- : "0" (val), "m" (atomic->value));
- return result;
-}
-#endif
-
void
_dbus_generate_pseudorandom_bytes_buffer (char *buffer,
int n_bytes)
}
/**
- * Gets a UID from a UID string.
- *
- * @param uid_str the UID in string form
- * @param uid UID to fill in
- * @returns #TRUE if successfully filled in UID
- */
-dbus_bool_t
-_dbus_parse_uid (const DBusString *uid_str,
- dbus_uid_t *uid)
-{
- int end;
- long val;
-
- if (_dbus_string_get_length (uid_str) == 0)
- {
- _dbus_verbose ("UID string was zero length\n");
- return FALSE;
- }
-
- val = -1;
- end = 0;
- if (!_dbus_string_parse_int (uid_str, 0, &val,
- &end))
- {
- _dbus_verbose ("could not parse string as a UID\n");
- return FALSE;
- }
-
- if (end != _dbus_string_get_length (uid_str))
- {
- _dbus_verbose ("string contained trailing stuff after UID\n");
- return FALSE;
- }
-
- *uid = val;
-
- return TRUE;
-}
-
-/**
- * Converts a UNIX or Windows errno
- * into a #DBusError name.
+ * Converts a UNIX errno, or Windows errno or WinSock error value into
+ * a #DBusError name.
*
* @todo should cover more errnos, specifically those
* from open().
case EPROTONOSUPPORT:
return DBUS_ERROR_NOT_SUPPORTED;
#endif
+#ifdef WSAEPROTONOSUPPORT
+ case WSAEPROTONOSUPPORT:
+ return DBUS_ERROR_NOT_SUPPORTED;
+#endif
#ifdef EAFNOSUPPORT
case EAFNOSUPPORT:
return DBUS_ERROR_NOT_SUPPORTED;
#endif
+#ifdef WSAEAFNOSUPPORT
+ case WSAEAFNOSUPPORT:
+ return DBUS_ERROR_NOT_SUPPORTED;
+#endif
#ifdef ENFILE
case ENFILE:
return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */
case ENOMEM:
return DBUS_ERROR_NO_MEMORY;
#endif
-#ifdef EINVAL
- case EINVAL:
- return DBUS_ERROR_FAILED;
-#endif
-#ifdef EBADF
- case EBADF:
- return DBUS_ERROR_FAILED;
-#endif
-#ifdef EFAULT
- case EFAULT:
- return DBUS_ERROR_FAILED;
-#endif
-#ifdef ENOTSOCK
- case ENOTSOCK:
- return DBUS_ERROR_FAILED;
-#endif
-#ifdef EISCONN
- case EISCONN:
- return DBUS_ERROR_FAILED;
-#endif
#ifdef ECONNREFUSED
case ECONNREFUSED:
return DBUS_ERROR_NO_SERVER;
#endif
+#ifdef WSAECONNREFUSED
+ case WSAECONNREFUSED:
+ return DBUS_ERROR_NO_SERVER;
+#endif
#ifdef ETIMEDOUT
case ETIMEDOUT:
return DBUS_ERROR_TIMEOUT;
#endif
+#ifdef WSAETIMEDOUT
+ case WSAETIMEDOUT:
+ return DBUS_ERROR_TIMEOUT;
+#endif
#ifdef ENETUNREACH
case ENETUNREACH:
return DBUS_ERROR_NO_NETWORK;
#endif
+#ifdef WSAENETUNREACH
+ case WSAENETUNREACH:
+ return DBUS_ERROR_NO_NETWORK;
+#endif
#ifdef EADDRINUSE
case EADDRINUSE:
return DBUS_ERROR_ADDRESS_IN_USE;
#endif
+#ifdef WSAEADDRINUSE
+ case WSAEADDRINUSE:
+ return DBUS_ERROR_ADDRESS_IN_USE;
+#endif
#ifdef EEXIST
case EEXIST:
return DBUS_ERROR_FILE_EXISTS;
return DBUS_ERROR_FAILED;
}
+/**
+ * Converts the current system errno value into a #DBusError name.
+ *
+ * @returns an error name
+ */
+const char*
+_dbus_error_from_system_errno (void)
+{
+ return _dbus_error_from_errno (errno);
+}
+
+/**
+ * Assign 0 to the global errno variable
+ */
+void
+_dbus_set_errno_to_zero (void)
+{
+#ifdef DBUS_WINCE
+ SetLastError (0);
+#else
+ errno = 0;
+#endif
+}
+
+/**
+ * See if errno is set
+ * @returns #TRUE if errno is not 0
+ */
+dbus_bool_t
+_dbus_get_is_errno_nonzero (void)
+{
+ return errno != 0;
+}
+
+/**
+ * See if errno is ENOMEM
+ * @returns #TRUE if errno == ENOMEM
+ */
+dbus_bool_t
+_dbus_get_is_errno_enomem (void)
+{
+ return errno == ENOMEM;
+}
+
+/**
+ * See if errno is EINTR
+ * @returns #TRUE if errno == EINTR
+ */
+dbus_bool_t
+_dbus_get_is_errno_eintr (void)
+{
+ return errno == EINTR;
+}
+
+/**
+ * See if errno is EPIPE
+ * @returns #TRUE if errno == EPIPE
+ */
+dbus_bool_t
+_dbus_get_is_errno_epipe (void)
+{
+ return errno == EPIPE;
+}
+
+/**
+ * Get error message from errno
+ * @returns _dbus_strerror(errno)
+ */
+const char*
+_dbus_strerror_from_errno (void)
+{
+ return _dbus_strerror (errno);
+}
+
/** @} end of sysdeps */
/* tests in dbus-sysdeps-util.c */
projects / platform / upstream / dbus.git / blobdiff