Don't do too much work in the finalizer - in particular, there's no
need to send RemoveMatch() messages to the bus daemon since we're
going to sever the connection and the bus will garbage collect
anyway. In this case it crashed the process.
Also add a test case that checks that the appropriate GDestroyNotify
callbacks are called when unreffing a connection with either 1)
exported objects; 2) signal subscriptions or 3) filter functions
.. yes, ideally apps would unregister such callbacks before giving up
their ref but that's not how things work :-)
Signed-off-by: David Zeuthen <davidz@redhat.com>
Otherwise e.g. setuid root processes can't connect to the system
bus. This was discovered when porting PolicyKit's pkexec(1) command to
a PolicyKit library using GDBus.
Signed-off-by: David Zeuthen <davidz@redhat.com>
You can drop a key-file in the schema directory that looks like:
[org.gtk.Example]
key='value'
to override the default value of 'key' in schema 'org.gtk.Example'.
- Make GCredentials instance and class structures private so it can't
be subclassed and we don't have to worry about ABI compat
issues. This also allows us to get rid of the GCredentialsPrivate
struct.
- Add a GCredentialsType enumeration that is used whenever exchanging
pointers with the user. This allows us to support OSes with
multiple native credential types. In particular, it allows
supporting OSes where the native credential evolves or even changes
over time.
- Add g_socket_get_credentials() method.
- Add tests for g_socket_get_credentials(). Right now this is in the
GDBus peer-to-peer test case but we can change that later.
- Move GTcpConnection into a separate gtk-doc page as was already
half-done with GUnixConnection. Also finish the GUnixConnection
move and ensure send_credentials() and receive_credentials()
methods are in the docs. Also nuke comment about GTcpConnection
being empty compared to its superclass.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Without this fix, we'd sometimes run code after stop() and finalize()
to handle incoming requests. This was observed in the gdbus-peer test
case occasionally crashing:
$ ./gdbus-peer
/gdbus/peer-to-peer: OK
/gdbus/delayed-message-processing: OK
/gdbus/nonce-tcp:
GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to `GDBusServer'
aborting...
Signed-off-by: David Zeuthen <davidz@redhat.com>
This allows sending and receiving D-Bus messages with instances of the
'h' D-Bus type. Unlike libdbus-1's dbus_message_iter_get_basic()
method, g_variant_get_handle() does not return a duplicated unix file
descriptor (that must be closed with close(2)) - instead, it returns
an index that can be used to get/dup the file descriptor from a
GUnixFDList object that can be obtained from the GDBusMessage object.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Until after we include the glib stuff, so that we have G_OS_UNIX
defined.
For some reason <stdlib.h> pulls in <sys/wait.h> on Fedora so this
wasn't a problem, but many others have reported the issue.
This is preferable to the current magical solution whereby the serial
is only rewritten if non-zero. In particular, it makes it easier to
send the same message on multiple connections without having to reset
the serial number.
Signed-off-by: David Zeuthen <davidz@redhat.com>
This is currently unused but might be useful in the future. For
example, it might be nice with a way to bypass the current queue of
outgoing messages - having a flag enumeration allows us to add a
G_DBUS_SEND_MESSAGE_FLAGS_BYPASS_QUEUE etc. etc.
This commit breaks ABI and API. Users of the (rarely used) API to send
messages will have to port to this new API.
Signed-off-by: David Zeuthen <davidz@redhat.com>
This is currently unused but will probably be useful in the
future. For example, we could have a _ARG0_IS_PATH to specify that
arg0 should be used for arg0path.
This commit breaks API and ABI. Users of
g_dbus_connection_signal_subscribe() will need to port to this new
version.
Signed-off-by: David Zeuthen <davidz@redhat.com>
If the subtree introspection function indicates that an interface exists
but then the dispatch function returns a NULL vtable for that interface,
issue a g_warning pointing programmers in the right direction.
Just because SOCK_CLOEXEC was defined at build time doesn't mean the
kernel we're running on supports it. So if socket() fails with EINVAL,
try again without the flag.
https://bugzilla.gnome.org/show_bug.cgi?id=624463
Clarify a couple of things in the docs:
1) you must return flat names (no slashes)
2) g_strfreev() will be called on the result
3) a benefit of using the DISPATCH_TO_UNENUMERATED flag
Return a NULL terminated C array instead of a GPtrArray
Also, document that %NULL is a permitted return value and clarify its
meaning.
Finally, avoid calling the enumeration function during dispatch when the
G_DBUS_SUBTREE_FLAGS_DISPATCH_TO_UNENUMERATED_NODES flag was given.
... so it is async, cancelable and returns an error. Also provide a
synchronous version.
This is an API/ABI break but it is expected that only very few
applications use this API.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Callers who are using g_application_unregistered_try_new are
likely wanting to continue doing something else if _register()
fails. Change the semantics so that passing register=FALSE
unsets default-quit as well. This means that a later _register()
call will send Activate but continue the process.
https://bugzilla.gnome.org/show_bug.cgi?id=622005
Following the behaviour of ls here, we should return at least the
file name, if we can't get any other information about a file. To
do this, handle EACCESS on stat() calls.
Patch by Tomas Bzatek, see bug 623692
- add G_VARIANT_TYPE_BYTESTRING, _BYTESTRING_ARRAY, _STRING_ARRAY
- remove g_variant_{new,get}_byte_array functions
- add g_variant_{new,get,dup}_bytestring{,_array} functions
- remove undocumented support for deserialising arrays of objectpaths
or signature strngs using g_variant_get_strv()
- add and document new format strings '^ay', '^&ay', '^aay' and '^a&ay'
- update GApplication to use the new API
- update GSettings binding code to use the new API
- add tests
E.g. move these C structures out of public header files and into their
respective C files. Also nuke padding since this is no longer needed.
This leaves only GDBusProxy as an extendable type.
Signed-off-by: David Zeuthen <davidz@redhat.com>
While this a dangerous thing to allow (collissions, reply_serial not
matching up etc.), the added flexibility makes this a good trade-off -
for example, with this feature, it's now a lot easier to build message
routers.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Also emit GDBusProxy::g-properties-changed when dropping (when the
name owner vanishes) or populating (when loading properties) the
property cache.
https://bugzilla.gnome.org/show_bug.cgi?id=623538
Signed-off-by: David Zeuthen <davidz@redhat.com>
Also add a 'address' G_DBUS_DEBUG option that will print out useful
debug information such as
GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
GDBus-debug:Address: dbus-launch output:
0000: 75 6e 69 78 3a 61 62 73 74 72 61 63 74 3d 2f 74 unix:abstract=/t
0010: 6d 70 2f 64 62 75 73 2d 77 42 41 6f 4b 59 49 52 mp/dbus-wBAoKYIR
0020: 7a 75 2c 67 75 69 64 3d 30 34 30 64 31 33 66 33 zu,guid=040d13f3
0030: 30 61 30 62 35 32 63 32 30 66 36 32 63 34 31 63 0a0b52c20f62c41c
0040: 30 30 30 30 35 30 38 64 00 d2 38 00 00 01 00 40 0000508d..8....@
0050: 05 00 00 00 00 .....
GDBus-debug:Address: dbus-launch stderr output:
14542: Autolaunch enabled (using X11).
14542: --exit-with-session automatically enabled
14542: Connected to X11 display ':0.0'
14542: === Parent dbus-launch continues
14542: Waiting for babysitter's intermediate parent
14542: Reading address from bus
14542: Reading PID from daemon
14542: Saving x11 address
14542: Created window 88080385
14542: session file: /root/.dbus/session-bus/05e508961149264c9b750a4c494aa6f7-0
14542: dbus-launch exiting
GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'
and
GDBus-debug:Address: In g_dbus_address_get_for_bus_sync() for bus type `session'
GDBus-debug:Address: env var DBUS_SESSION_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_SYSTEM_BUS_ADDRESS is not set
GDBus-debug:Address: env var DBUS_STARTER_BUS_TYPE is not set
GDBus-debug:Address: Running `dbus-launch --autolaunch=05e508961149264c9b750a4c494aa6f7 --binary-syntax --close-stderr' to get bus address (possibly autolaunching)
GDBus-debug:Address: dbus-launch output:
0000: 75 6e 69 78 3a 61 62 73 74 72 61 63 74 3d 2f 74 unix:abstract=/t
0010: 6d 70 2f 64 62 75 73 2d 77 42 41 6f 4b 59 49 52 mp/dbus-wBAoKYIR
0020: 7a 75 2c 67 75 69 64 3d 30 34 30 64 31 33 66 33 zu,guid=040d13f3
0030: 30 61 30 62 35 32 63 32 30 66 36 32 63 34 31 63 0a0b52c20f62c41c
0040: 30 30 30 30 35 30 38 64 00 d2 38 00 00 01 00 40 0000508d..8....@
0050: 05 00 00 00 00 .....
GDBus-debug:Address: dbus-launch stderr output:
14549: Autolaunch enabled (using X11).
14549: --exit-with-session automatically enabled
14549: Connected to X11 display ':0.0'
14549: dbus-daemon is already running. Returning existing parameters.
14549: dbus-launch exiting
GDBus-debug:Address: Returning address `unix:abstract=/tmp/dbus-wBAoKYIRzu,guid=040d13f30a0b52c20f62c41c0000508d' for bus type `session'
Note that things work exactly like libdbus, e.g. from the
dbus-launch(1) man page:
Whenever an autolaunch occurs, the application that had to start a
new bus will be in its own little world; it can effectively end up
starting a whole new session if it tries to use a lot of bus
services. This can be suboptimal or even totally broken, depending
on the app and what it tries to do.
[...]
You can always avoid autolaunch by manually setting
DBUS_SESSION_BUS_ADDRESS. Autolaunch happens because the default
address if none is set is "autolaunch:", so if any other address is
set there will be no autolaunch. You can however include autolaunch
in an explicit session bus address as a fallback, for example
DBUS_SESSION_BUS_ADDRESS="something:,autolaunch:" - in that case if
the first address doesn't work, processes will autolaunch. (The bus
address variable contains a comma-separated list of addresses to
try.)
Signed-off-by: David Zeuthen <davidz@redhat.com>
The keyfile backend forms paths like this:
prefix + group_name + '/' + keyname
If the prefix is '/apps/yelp/' and the group name is '/' then this means
that we end up with a key name of (for example):
'/apps/yelp/' + '/' + '/' + 'font-adjustment'
= '/apps/yelp///font-adjustment'
which is obviously not a valid key name.
This patch rejects group names starting or ending with '/' or containing
'//' and also rejects keys containing '/'. This should make it
impossible for invalid keys to be formed.
Add a <flags> tag to the schema file format and a flags='' attribute to
go along with. Add some extra test cases for those.
Add new g_settings_{get,set}_flags() calls and support binding to
GParamSpecFlags properties. Add test cases.
This commit adds the following G_DBUS_DEBUG flags
- emission
- incoming
- call
- signal
- payload
https://bugzilla.gnome.org/show_bug.cgi?id=620913
Signed-off-by: David Zeuthen <davidz@redhat.com>
These fixes makes udisks-daemon from udisks' gdbus-port branch, see
http://cgit.freedesktop.org/udisks/log/?h=gdbus-port
handle 200 add/remove uevents generated by e.g.
#!/bin/bash
DEV=mmcblk0p1
for n in `seq 200` ; do
udevadm trigger --sysname-match=$DEV --action=remove
udevadm trigger --sysname-match=$DEV --action=add
echo foo $n
done
without any substantial leaks.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Things will still work fine if the GDBusInterfaceInfo is allocated
statically because if so the ref_count will be -1.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Without this guarantee, peer-to-peer connections are not very
useful. However, with this guarantee it's possible to export objects
in a handler for the GDBusServer::new-connection signal.
There are two caveats with this patch
- it won't work on message bus connections
- we don't queue up messages to be written
that can be addresses later if needed.
https://bugzilla.gnome.org/show_bug.cgi?id=623142
Signed-off-by: David Zeuthen <davidz@redhat.com>
Add support for extends='' and list-of='' tags to the <schema> element.
The attributes are parsed and some sanity-checking is done but currently
nothing happens as a result.
Add some tests.
There's a couple of places in GDBus where it's a programming error
(e.g. we'll assert or spew via e.g. g_warning()) to use the API on a
closed connection. This approach can never work since a
GDBusConnection can be closed at any point in time outside of
programmer control.
Just change the code to return a run-time error (e.g. return
G_IO_ERROR_CLOSED when sending messages, invoking methods) or silently
accept the request (e.g. exporting objects, registering for signals)
without doing anything.
Note that a GDBusConnection object is always useless after being
closed - e.g. there's no way to "reopen" a connection - the user will
have to create a new object and use that instead.
https://bugzilla.gnome.org/show_bug.cgi?id=623143
Signed-off-by: David Zeuthen <davidz@redhat.com>
Neutralise and deprecate the --uninstall option in the schema compiler
and remove it from gsettings.m4.
Make the new default behaviour a compromise between the old default
behaviour and the previous --uninstall option:
- never return a failure code if no schema files are found
- issue a warning instead
- remove the gschemas.compiled file if it exists
We only ever do the enum mapping for the property binding in the case
that a GParamSpecEnum exists and in that case the class is already
referenced by the GParamSpec. Use peek instead of ref/unref and add a
clarifying note.
Fix a bug where the type from g_variant_get_type() was used after
freeing the variant. This works for base types (since they are cached
and live forever) but not for arrays (where the bug was first seen).
Hold the GSettingsKeyInfo as part of the binding structure to save work
on each get/set. Use our copy of this structure to call the internal
get/set APIs. Give more descriptive error messages in the case of
invalid data on sets and retry using the translated default then schema
default value in case of failure to map on reads.
If we know the expected interface (e.g. :g-interface-info is set),
then we always warned when calling a method on a different
interface. Don't do that, there's no way the expected interface can
know anything about this method.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Either child_watch_source or timeout_source will already have been
destroyed after we finish the loop, and it's not safe to call
g_source_destroy() on it a second time unless we're still holding a
ref on it.
When disposing a GSocketConnection, don't explicitly close the
underlying GSocket. The GSocket will close itself if it gets
destroyed, and if it doesn't get destroyed, that presumably means the
app still wants to use it. Eg, this lets you use GSocketClient to
create a GSocketConnection, and then take the GSocket and destroy the
GSocketConnection.
https://bugzilla.gnome.org/show_bug.cgi?id=616855
The GSocket docs point out that g_socket_send/g_socket_receive may
return G_IO_ERROR_WOULD_BLOCK even if g_socket_condition_check claimed
that they wouldn't. Fix the socket streams to check for that.
https://bugzilla.gnome.org/show_bug.cgi?id=603309
Add lots of padding for public class structures. Notably, we seemed to
lack any padding whatsoever in the GDBusMessageClass struct (spotted
by Dan Winship). Also switch to using
gpointer padding[N];
instead of
void (*_g_reserved1) (void);
...
void (*_g_reservedN) (void);
Signed-off-by: David Zeuthen <davidz@redhat.com>
