-/* -*- 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"
+#include "dbus-misc.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
}
/**
+ * @ingroup DBusMisc
+ *
* Wrapper for setenv(). If the value is #NULL, unsets
* the environment variable.
*
* we can not rely on internal implementation details of
* the underlying libc library.
*
+ * This function is not thread-safe, because altering the environment
+ * in Unix is not thread-safe in general.
+ *
* @param varname name of environment variable
- * @param value value of environment variable
- * @returns #TRUE on success.
+ * @param value value of environment variable, or #NULL to unset
+ * @returns #TRUE on success, #FALSE if not enough memory.
*/
dbus_bool_t
-_dbus_setenv (const char *varname,
- const char *value)
+dbus_setenv (const char *varname,
+ const char *value)
{
_dbus_assert (varname != NULL);
const char*
_dbus_getenv (const char *varname)
{
+ /* Don't respect any environment variables if the current process is
+ * setuid. This is the equivalent of glibc's __secure_getenv().
+ */
+ if (_dbus_check_setuid ())
+ return NULL;
return getenv (varname);
}
-/*
- * init a pipe instance.
- *
- * @param pipe the pipe
- * @param fd the file descriptor to init from
- */
-void
-_dbus_pipe_init (DBusPipe *pipe,
- int fd)
-{
- pipe->fd_or_handle = fd;
-}
-
-/**
- * init a pipe with stdout
- *
- * @param pipe the pipe
- */
-void
-_dbus_pipe_init_stdout (DBusPipe *pipe)
-{
- _dbus_pipe_init (pipe, 1);
-}
-
/**
- * check if a pipe is valid; pipes can be set invalid, similar to
- * a -1 file descriptor.
+ * Wrapper for clearenv().
*
- * @param pipe the pipe instance
- * @returns #FALSE if pipe is not valid
+ * @returns #TRUE on success.
*/
dbus_bool_t
-_dbus_pipe_is_valid(DBusPipe *pipe)
+_dbus_clearenv (void)
{
- return pipe->fd_or_handle >= 0;
-}
+ dbus_bool_t rc = TRUE;
-/**
- * Check if a pipe is stdout or stderr.
- *
- * @param pipe the pipe instance
- * @returns #TRUE if pipe is one of the standard out/err channels
- */
-dbus_bool_t
-_dbus_pipe_is_stdout_or_stderr (DBusPipe *pipe)
-{
- return pipe->fd_or_handle == 1 || pipe->fd_or_handle == 2;
-}
+#ifdef HAVE_CLEARENV
+ if (clearenv () != 0)
+ rc = FALSE;
+#else
-/**
- * Initializes a pipe to an invalid value.
- * @param pipe the pipe
- */
-void
-_dbus_pipe_invalidate (DBusPipe *pipe)
-{
- pipe->fd_or_handle = -1;
+ if (environ != NULL)
+ environ[0] = NULL;
+#endif
+
+ return rc;
}
/**
return TRUE;
}
-#ifdef DBUS_BUILD_TESTS
-/**
- * Appends a double to a DBusString.
- *
- * @param str the string
- * @param value the floating point value
- * @returns #FALSE if not enough memory or other failure.
- */
-dbus_bool_t
-_dbus_string_append_double (DBusString *str,
- double value)
-{
-#define MAX_DOUBLE_LEN 64 /* this is completely made up :-/ */
- int orig_len;
- char *buf;
- int i;
-
- orig_len = _dbus_string_get_length (str);
-
- if (!_dbus_string_lengthen (str, MAX_DOUBLE_LEN))
- return FALSE;
-
- buf = _dbus_string_get_data_len (str, orig_len, MAX_DOUBLE_LEN);
-
- snprintf (buf, MAX_LONG_LEN, "%g", value);
-
- i = 0;
- while (*buf)
- {
- ++buf;
- ++i;
- }
-
- _dbus_string_shorten (str, MAX_DOUBLE_LEN - i);
-
- return TRUE;
-}
-#endif /* DBUS_BUILD_TESTS */
-
/**
* Parses an integer contained in a DBusString. Either return parameter
* may be #NULL if you aren't interested in it. The integer is parsed
_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;
return TRUE;
}
-#ifdef DBUS_BUILD_TESTS
-static dbus_bool_t
-ascii_isspace (char c)
-{
- return (c == ' ' ||
- c == '\f' ||
- c == '\n' ||
- c == '\r' ||
- c == '\t' ||
- c == '\v');
-}
-#endif /* DBUS_BUILD_TESTS */
-
-#ifdef DBUS_BUILD_TESTS
-static dbus_bool_t
-ascii_isdigit (char c)
-{
- return c >= '0' && c <= '9';
-}
-#endif /* DBUS_BUILD_TESTS */
-
-#ifdef DBUS_BUILD_TESTS
-static dbus_bool_t
-ascii_isxdigit (char c)
-{
- return (ascii_isdigit (c) ||
- (c >= 'a' && c <= 'f') ||
- (c >= 'A' && c <= 'F'));
-}
-#endif /* DBUS_BUILD_TESTS */
-
-#ifdef DBUS_BUILD_TESTS
-/* Calls strtod in a locale-independent fashion, by looking at
- * the locale data and patching the decimal comma to a point.
- *
- * Relicensed from glib.
- */
-static double
-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;
- const char *decimal_point;
- int decimal_point_len;
- const char *p, *decimal_point_pos;
- const char *end = NULL; /* Silence gcc */
-
- fail_pos = NULL;
-
- locale_data = localeconv ();
- decimal_point = locale_data->decimal_point;
- decimal_point_len = strlen (decimal_point);
-
- _dbus_assert (decimal_point_len != 0);
-
- decimal_point_pos = NULL;
- if (decimal_point[0] != '.' ||
- decimal_point[1] != 0)
- {
- p = nptr;
- /* Skip leading space */
- while (ascii_isspace (*p))
- p++;
-
- /* Skip leading optional sign */
- if (*p == '+' || *p == '-')
- p++;
-
- if (p[0] == '0' &&
- (p[1] == 'x' || p[1] == 'X'))
- {
- p += 2;
- /* HEX - find the (optional) decimal point */
-
- while (ascii_isxdigit (*p))
- p++;
-
- if (*p == '.')
- {
- decimal_point_pos = p++;
-
- while (ascii_isxdigit (*p))
- p++;
-
- if (*p == 'p' || *p == 'P')
- p++;
- if (*p == '+' || *p == '-')
- p++;
- while (ascii_isdigit (*p))
- p++;
- end = p;
- }
- }
- else
- {
- while (ascii_isdigit (*p))
- p++;
-
- if (*p == '.')
- {
- decimal_point_pos = p++;
-
- while (ascii_isdigit (*p))
- p++;
-
- if (*p == 'e' || *p == 'E')
- p++;
- if (*p == '+' || *p == '-')
- p++;
- while (ascii_isdigit (*p))
- p++;
- end = p;
- }
- }
- /* For the other cases, we need not convert the decimal point */
- }
-
- /* Set errno to zero, so that we can distinguish zero results
- and underflows */
- errno = 0;
-
- if (decimal_point_pos)
- {
- char *copy, *c;
-
- /* We need to convert the '.' to the locale specific decimal point */
- copy = dbus_malloc (end - nptr + 1 + decimal_point_len);
-
- c = copy;
- memcpy (c, nptr, decimal_point_pos - nptr);
- c += decimal_point_pos - nptr;
- memcpy (c, decimal_point, decimal_point_len);
- c += decimal_point_len;
- memcpy (c, decimal_point_pos + 1, end - (decimal_point_pos + 1));
- c += end - (decimal_point_pos + 1);
- *c = 0;
-
- val = strtod (copy, &fail_pos);
-
- if (fail_pos)
- {
- if (fail_pos > decimal_point_pos)
- fail_pos = (char *)nptr + (fail_pos - copy) - (decimal_point_len - 1);
- else
- fail_pos = (char *)nptr + (fail_pos - copy);
- }
-
- dbus_free (copy);
-
- }
- else
- val = strtod (nptr, &fail_pos);
-
- if (endptr)
- *endptr = fail_pos;
-
- return val;
-}
-#endif /* DBUS_BUILD_TESTS */
-
-#ifdef DBUS_BUILD_TESTS
-/**
- * Parses a floating point number contained in a DBusString. Either
- * return parameter may be #NULL if you aren't interested in it. The
- * integer is parsed and stored in value_return. Return parameters are
- * not initialized if the function returns #FALSE.
- *
- * @param str the string
- * @param start the byte index of the start of the float
- * @param value_return return location of the float value or #NULL
- * @param end_return return location of the end of the float, or #NULL
- * @returns #TRUE on success
- */
-dbus_bool_t
-_dbus_string_parse_double (const DBusString *str,
- int start,
- double *value_return,
- int *end_return)
-{
- double v;
- const char *p;
- char *end;
-
- p = _dbus_string_get_const_data_len (str, start,
- _dbus_string_get_length (str) - start);
-
- end = NULL;
- errno = 0;
- v = ascii_strtod (p, &end);
- if (end == NULL || end == p || errno != 0)
- return FALSE;
-
- if (value_return)
- *value_return = v;
- if (end_return)
- *end_return = start + (end - p);
-
- return TRUE;
-}
-#endif /* DBUS_BUILD_TESTS */
-
/** @} */ /* DBusString group */
/**
_dbus_verbose ("Falling back to pseudorandom for %d bytes\n",
n_bytes);
- _dbus_get_current_time (NULL, &tv_usec);
+ _dbus_get_real_time (NULL, &tv_usec);
srand (tv_usec);
i = 0;
}
/**
- * 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().
#ifdef EPROTONOSUPPORT
case EPROTONOSUPPORT:
return DBUS_ERROR_NOT_SUPPORTED;
+#elif defined(WSAEPROTONOSUPPORT)
+ case WSAEPROTONOSUPPORT:
+ return DBUS_ERROR_NOT_SUPPORTED;
#endif
#ifdef EAFNOSUPPORT
case EAFNOSUPPORT:
return DBUS_ERROR_NOT_SUPPORTED;
+#elif defined(WSAEAFNOSUPPORT)
+ case WSAEAFNOSUPPORT:
+ return DBUS_ERROR_NOT_SUPPORTED;
#endif
#ifdef ENFILE
case ENFILE:
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;
+#elif defined(WSAECONNREFUSED)
+ case WSAECONNREFUSED:
+ return DBUS_ERROR_NO_SERVER;
#endif
#ifdef ETIMEDOUT
case ETIMEDOUT:
return DBUS_ERROR_TIMEOUT;
+#elif defined(WSAETIMEDOUT)
+ case WSAETIMEDOUT:
+ return DBUS_ERROR_TIMEOUT;
#endif
#ifdef ENETUNREACH
case ENETUNREACH:
return DBUS_ERROR_NO_NETWORK;
+#elif defined(WSAENETUNREACH)
+ case WSAENETUNREACH:
+ return DBUS_ERROR_NO_NETWORK;
#endif
#ifdef EADDRINUSE
case EADDRINUSE:
return DBUS_ERROR_ADDRESS_IN_USE;
+#elif defined(WSAEADDRINUSE)
+ case WSAEADDRINUSE:
+ return DBUS_ERROR_ADDRESS_IN_USE;
#endif
#ifdef EEXIST
case EEXIST:
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