fdo-mirrors/dbus
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/dbus/dbus.git synced 2026-05-06 05:48:01 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

2003-04-03 Havoc Pennington <hp@redhat.com>

Browse source 
* bus/activation.c (load_directory): fix up memleaks
	(bus_activation_entry_free): free the entry

	* dbus/dbus-bus.c (dbus_bus_acquire_service): return an error if
	we get one from the message bus; fix memleaks.

	* dbus/dbus-message.c (dbus_set_error_from_message): new function
This commit is contained in:
Havoc Pennington 2003-04-03 21:56:22 +00:00
parent fe9f3b45cc
commit f216e81432
10 changed files with 201 additions and 25 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
ChangeLog
View file

@ -1,3 +1,13 @@
2003-04-03 Havoc Pennington <hp@redhat.com>
* bus/activation.c (load_directory): fix up memleaks
(bus_activation_entry_free): free the entry
* dbus/dbus-bus.c (dbus_bus_acquire_service): return an error if
we get one from the message bus; fix memleaks.
* dbus/dbus-message.c (dbus_set_error_from_message): new function
2003-04-03 Havoc Pennington <hp@pobox.com>
* bus/config-parser.c (bus_config_parser_unref): free

30
bus/activation.c
View file

@ -110,6 +110,8 @@ bus_activation_entry_free (BusActivationEntry *entry)
dbus_free (entry->name);
dbus_free (entry->exec);
dbus_free (entry);
}
static dbus_bool_t
@ -197,7 +199,8 @@ load_directory (BusActivation *activation,
DBusString full_path;
BusDesktopFile *desktop_file;
DBusError tmp_error;
dbus_bool_t retval;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_string_init_const (&dir, directory);
@ -218,14 +221,16 @@ load_directory (BusActivation *activation,
return FALSE;
}
/* from this point it's safe to "goto failed" */
retval = FALSE;
/* from this point it's safe to "goto out" */
iter = _dbus_directory_open (&dir, error);
if (iter == NULL)
{
_dbus_verbose ("Failed to open directory %s: %s\n",
directory, error ? error->message : "unknown");
goto failed;
goto out;
}
/* Now read the files */
@ -240,7 +245,7 @@ load_directory (BusActivation *activation,
!_dbus_concat_dir_and_file (&full_path, &filename))
{
BUS_SET_OOM (error);
goto failed;
goto out;
}
if (!_dbus_string_ends_with_c_str (&filename, ".service"))
@ -261,7 +266,7 @@ load_directory (BusActivation *activation,
if (dbus_error_has_name (&tmp_error, DBUS_ERROR_NO_MEMORY))
{
dbus_move_error (&tmp_error, error);
goto failed;
goto out;
}
dbus_error_free (&tmp_error);
@ -279,7 +284,7 @@ load_directory (BusActivation *activation,
if (dbus_error_has_name (&tmp_error, DBUS_ERROR_NO_MEMORY))
{
dbus_move_error (&tmp_error, error);
goto failed;
goto out;
}
dbus_error_free (&tmp_error);
@ -296,13 +301,16 @@ load_directory (BusActivation *activation,
if (dbus_error_is_set (&tmp_error))
{
dbus_move_error (&tmp_error, error);
goto failed;
goto out;
}
return TRUE;
retval = TRUE;
failed:
_DBUS_ASSERT_ERROR_IS_SET (error);
out:
if (!retval)
_DBUS_ASSERT_ERROR_IS_SET (error);
else
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
if (iter != NULL)
_dbus_directory_close (iter);
@ -311,7 +319,7 @@ load_directory (BusActivation *activation,
_dbus_string_free (&filename);
_dbus_string_free (&full_path);
return FALSE;
return retval;
}
BusActivation*

11
configure.in
View file

@ -403,6 +403,15 @@ fi
AM_CONDITIONAL(DBUS_INIT_SCRIPTS_RED_HAT, test x$with_init_scripts = xredhat)
#### Tell tests where to find certain stuff in builddir
ABSOLUTE_TOP_BUILDDIR=`cd ${ac_top_builddir}. && pwd`
TEST_SERVICE_BINARY=${ABSOLUTE_TOP_BUILDDIR}/test/test-service
AC_SUBST(TEST_SERVICE_BINARY)
TEST_SERVICE_DIR=${ABSOLUTE_TOP_BUILDDIR}/test/data/valid-service-files
AC_SUBST(TEST_SERVICE_DIR)
AC_OUTPUT([
Doxyfile
bus/system.conf
@ -417,6 +426,8 @@ test/Makefile
doc/Makefile
dbus-1.0.pc
dbus-glib-1.0.pc
test/data/valid-config-files/debug-allow-all.conf
test/data/valid-service-files/debug-echo.service
])
dnl ==========================================================================

14
dbus/dbus-bus.c
View file

@ -534,7 +534,7 @@ dbus_bus_acquire_service (DBusConnection *connection,
DBusError *error)
{
DBusMessage *message, *reply;
int service_result;
dbus_uint32_t service_result;
message = dbus_message_new (DBUS_SERVICE_DBUS,
DBUS_MESSAGE_ACQUIRE_SERVICE);
@ -564,16 +564,26 @@ dbus_bus_acquire_service (DBusConnection *connection,
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return -1;
}
}
if (dbus_set_error_from_message (error, reply))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
dbus_message_unref (reply);
return -1;
}
if (!dbus_message_get_args (reply, error,
DBUS_TYPE_UINT32, &service_result,
0))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
dbus_message_unref (reply);
return -1;
}
dbus_message_unref (reply);
return service_result;
}

39
dbus/dbus-message.c
View file

@ -2381,6 +2381,45 @@ dbus_message_sender_is (DBusMessage *message,
return FALSE;
}
/**
* Sets a #DBusError based on the contents of the given
* message. The error is only set if the message
* is an error message, as in dbus_message_get_is_error().
* The name of the error is set to the name of the message,
* and the error message is set to the first argument
* if the argument exists and is a string.
*
* The return value indicates whether the error was set (the error is
* set if and only if the message is an error message).
* So you can check for an error reply and convert it to DBusError
* in one go.
*
* @param error the error to set
* @param message the message to set it from
* @returns #TRUE if dbus_message_get_is_error() returns #TRUE for the message
*/
dbus_bool_t
dbus_set_error_from_message (DBusError *error,
DBusMessage *message)
{
char *str;
if (!dbus_message_get_is_error (message))
return FALSE;
str = NULL;
dbus_message_get_args (message, NULL,
DBUS_TYPE_STRING, &str,
DBUS_TYPE_INVALID);
dbus_set_error (error, dbus_message_get_name (message),
str ? "%s" : NULL, str);
dbus_free (str);
return TRUE;
}
/** @} */
/**

5
dbus/dbus-message.h
View file

@ -148,6 +148,11 @@ dbus_bool_t dbus_message_iter_get_string_array (DBusMessageIter *iter,
dbus_bool_t dbus_message_iter_get_dict (DBusMessageIter *iter,
DBusDict **dict);
dbus_bool_t dbus_set_error_from_message (DBusError *error,
DBusMessage *message);
DBUS_END_DECLS;
#endif /* DBUS_MESSAGE_H */

11
doc/TODO
View file

@ -48,3 +48,14 @@
- Abstract the user database, so you can use something other than the system password
database.
- The convenience functions in dbus-bus.h should perhaps have
the signatures that they would have if they were autogenerated
stubs. e.g. the acquire service function. We should also evaluate
which of these functions to include, in light of the fact that
GLib/Qt native stubs will probably also exist.
- The message handler interface needs rethinking, perhaps handlers should be able
to return an error that automatically gets turned into a message; most likely
some basic spec'ing out of the GLib/Qt level stubs/skels stuff will be
needed to understand the right approach.

17
doc/dbus-specification.sgml
View file

@ -184,7 +184,7 @@
<tbody>
<row>
<entry>0x1</entry>
<entry>This message is an error reply.</entry>
<entry>This message is an error reply. If the first argument exists and is a string, it is an error message.</entry>
</row>
</tbody>
</tgroup>
@ -978,12 +978,13 @@
number of the message being replied to.
</para>
<para>
If an error occurs, an error reply may be sent in place of the
standard reply. Error replies can be identified by a special
header flag, see <xref linkend="message-protocol-header-encoding">.
Error replies have a name which reflects the type of
error that occurred. Error replies would generally
be mapped to exceptions in a programming language.
If an error occurs, an error reply may be sent in place of the standard
reply. Error replies can be identified by a special header flag, see
<xref linkend="message-protocol-header-encoding">. Error replies have a
name which reflects the type of error that occurred. Error replies would
generally be mapped to exceptions in a programming language. If an
error reply has a first argument, and that argument has type STRING,
then the argument must be an error message.
</para>
<para>
[FIXME discuss mapping of broadcast messages + matching rules
@ -1220,7 +1221,7 @@
# Sample service description file
[D-BUS Service]
Name=org.gnome.ConfigurationDatabase
Exec=gconfd-2
Exec=/usr/libexec/gconfd-2
</programlisting>
</figure>
</para>

5
test/Makefile.am
View file

@ -61,9 +61,10 @@ TESTDIRS= \
data/auth \
data/sha-1 \
data/valid-config-files \
data/valid-config-files/basic.d
data/valid-config-files/basic.d \
data/valid-service-files
FIND_TESTS=find -name "*.message" -o -name "*.message-raw" -o -name "*.auth-script" -o -name "*.sha1" -o -name "*.txt" -o -name "*.conf"
FIND_TESTS=find -name "*.message" -o -name "*.message-raw" -o -name "*.auth-script" -o -name "*.sha1" -o -name "*.txt" -o -name "*.conf" -o -name "*.service"
dist-hook:
for D in $(TESTDIRS); do \

84
test/test-service.c
View file

@ -1,15 +1,74 @@
#include <dbus/dbus.h>
#include <stdio.h>
#include <stdlib.h>
#include "watch.h"
static void
die (const char *message)
{
fprintf (stderr, "%s", message);
exit (1);
}
static DBusHandlerResult
echo_handler (DBusMessageHandler *handler,
DBusConnection *connection,
DBusMessage *message,
void *user_data)
{
DBusError error;
DBusMessage *reply;
char *s;
dbus_error_init (&error);
if (!dbus_message_get_args (message,
&error,
DBUS_TYPE_STRING, &s,
DBUS_TYPE_INVALID))
{
reply = dbus_message_new_error_reply (message,
error.name,
error.message);
if (reply == NULL)
die ("No memory\n");
if (!dbus_connection_send (connection, reply, NULL))
die ("No memory\n");
dbus_message_unref (reply);
return DBUS_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
}
reply = dbus_message_new_reply (message);
if (reply == NULL)
die ("No memory\n");
if (!dbus_message_append_string (reply, s))
die ("No memory");
if (!dbus_connection_send (connection, reply, NULL))
die ("No memory\n");
dbus_free (s);
dbus_message_unref (reply);
return DBUS_HANDLER_RESULT_ALLOW_MORE_HANDLERS;
}
int
main (int argc,
char **argv)
{
DBusConnection *connection;
DBusError error;
DBusMessage *message;
DBusMessageHandler *handler;
const char *to_handle[] = { "org.freedesktop.DBus.TestSuiteEcho" };
int result;
dbus_error_init (&error);
connection = dbus_bus_get (DBUS_BUS_ACTIVATION, &error);
if (connection == NULL)
@ -21,10 +80,31 @@ main (int argc,
}
setup_connection (connection);
handler = dbus_message_handler_new (echo_handler, NULL, NULL);
if (handler == NULL)
die ("No memory");
if (!dbus_connection_register_handler (connection, handler, to_handle, 1))
die ("No memory");
result = dbus_bus_acquire_service (connection, "org.freedesktop.DBus.TestSuiteEchoService",
0, &error);
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Failed to acquire service: %s\n",
error.message);
dbus_error_free (&error);
return 1;
}
do_mainloop ();
dbus_connection_unref (connection);
dbus_message_handler_unref (handler);
dbus_shutdown ();
return 0;
}