Add GZlibCompressor:file-info property. If it contains a non-NULL
GFileInfo, and the compressor is in GZIP mode, the filename and
modification time from the file info are written to the GZIP header
in the output data.
Add GZlibDeompressor:file-info property. If the decompressor is in GZIP
mode, and the GZIP data contains a GZIP header, the filename and
modification time are read from it, stored in a GFileInfo, and the
file-info property is notified.
Bug #617691.
This patch guarantees that g_output_stream_write() can never fail with
G_IO_ERROR_WOULD_BLOCK. Without such a guarantee, we would need some
kind of GIOPollable interface or some way to get an event when the
stream is writable again. Which is mostly useless considering that
this method is asynchronous anyway.
Note: this patch just codifies existing behavior - GUnixOutputStream,
GSocketOutputStream and other implementations already work this way.
See also bug 626748 comment 5 for how the GDBus code relies on this
guarantee.
https://bugzilla.gnome.org/show_bug.cgi?id=627071
Signed-off-by: David Zeuthen <davidz@redhat.com>
If sending a lot of data and/or the other peer is not reading it, then
socket buffers can overflow. This is communicated from the kernel by
returning EAGAIN. In GIO, it is modelled by g_output_stream_write()
and g_socket_send_message() returning G_IO_ERROR_WOULD_BLOCK.
It is also problematic that that we're using synchronous IO in the
shared GDBus IO thread. It means that one GDBusConnection can lock up
others.
It turns out that by porting from g_output_stream_write() to
g_output_stream_write_async() we fix the EAGAIN issue. For GSocket, we
still need to handle things manually (by creating a GSource) as
g_socket_send_message() is used.
We check the new behavior in Michael's producer/consumer test case (at
/gdbus/overflow in gdbus-peer.c) added in the last commit.
Also add a test case that sends and receives a 20 MiB message.
Also add a new `transport' G_DBUS_DEBUG option so it is easy to
inspect partial writes:
$ G_DBUS_DEBUG=transport ./gdbus-connection -p /gdbus/connection/large_message
[...]
========================================================================
GDBus-debug:Transport:
>>>> WROTE 128000 bytes of message with serial 4 and
size 20971669 from offset 0 on a GSocketOutputStream
========================================================================
GDBus-debug:Transport:
>>>> WROTE 128000 bytes of message with serial 4 and
size 20971669 from offset 128000 on a GSocketOutputStream
========================================================================
GDBus-debug:Transport:
>>>> WROTE 128000 bytes of message with serial 4 and
size 20971669 from offset 256000 on a GSocketOutputStream
[...]
========================================================================
GDBus-debug:Transport:
>>>> WROTE 43669 bytes of message with serial 4 and
size 20971669 from offset 20928000 on a GSocketOutputStream
[...]
========================================================================
GDBus-debug:Transport:
<<<< READ 16 bytes of message with serial 3 and
size 20971620 to offset 0 from a GSocketInputStream
========================================================================
GDBus-debug:Transport:
<<<< READ 15984 bytes of message with serial 3 and
size 20971620 to offset 16 from a GSocketInputStream
========================================================================
GDBus-debug:Transport:
<<<< READ 16000 bytes of message with serial 3 and
size 20971620 to offset 16000 from a GSocketInputStream
[...]
========================================================================
GDBus-debug:Transport:
<<<< READ 144000 bytes of message with serial 3 and
size 20971620 to offset 20720000 from a GSocketInputStream
========================================================================
GDBus-debug:Transport:
<<<< READ 107620 bytes of message with serial 3 and
size 20971620 to offset 20864000 from a GSocketInputStream
OK
https://bugzilla.gnome.org/show_bug.cgi?id=626748
Signed-off-by: David Zeuthen <davidz@redhat.com>
This patch fixes this problem
Syscall param socketcall.sendmsg(msg.msg_control) points to uninitialised byte(s)
at 0x3D5B00EA60: __sendmsg_nocancel (syscall-template.S:82)
by 0x53F9790: g_socket_send_message (gsocket.c:2918)
by 0x540FDD0: g_unix_connection_send_credentials (gunixconnection.c:351)
by 0x542B93F: _g_dbus_auth_run_client (gdbusauth.c:618)
by 0x5438001: initable_init (gdbusconnection.c:2191)
by 0x53E09CC: g_initable_init (ginitable.c:105)
by 0x543F6E9: g_bus_get_sync (gdbusconnection.c:6091)
by 0x402C7E: test_connection_life_cycle (gdbus-connection.c:126)
by 0x4C7CABB: test_case_run (gtestutils.c:1174)
by 0x4C7CD84: g_test_run_suite_internal (gtestutils.c:1223)
by 0x4C7CE49: g_test_run_suite_internal (gtestutils.c:1233)
by 0x4C7CE49: g_test_run_suite_internal (gtestutils.c:1233)
Address 0x7fefff9fc is on thread 1's stack
Signed-off-by: David Zeuthen <davidz@redhat.com>
Previously if a GSocketConnection had a blocking GSocket, it would
sometimes block during asynchonous I/O, and if it had a non-blocking
socket, it would sometimes return G_IO_ERROR_WOULD_BLOCK from
synchronous I/O. This fixes the connection to not depend on the socket
state.
https://bugzilla.gnome.org/show_bug.cgi?id=616458
g_socket_client_connect_async() was always leaking its GCancellable,
and would also leak any GSocket that eventually failed to connect
after returning G_IO_ERROR_PENDING.
GSocket has a timeout flag now, but when using GSocketClient there was
no way to set the timeout until after connecting (or failing). Fix
that by adding a timeout property to GSocketClient.
Because g_simple_async_report_[g]error_in_idle() don't take a source tag
parameter, code that uses them can't currently use
g_simple_async_result_is_valid() (at least, not for the error case).
Bug 602417
The GClosure API is a bit funky (and badly documented), and requires
you to set a marshaller on the closure, and the marshaller has an
implicit 'this' argument, and the caller is reponsible for unsetting
the values after invoking the closure.
I've added some calls of the _with_closures variants to the
gdbus-names test now.
This prints all GDBusMethodInvocation API usage and is normally used
with the `incoming' option. Example:
# G_DBUS_DEBUG=incoming,return ./polkitd --replace
Entering main event loop
Connected to the system bus
Registering null backend at priority -10
[...]
Acquired the name org.freedesktop.PolicyKit1
[...]
========================================================================
GDBus-debug:Incoming:
<<<< METHOD INVOCATION org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
on object /org/freedesktop/PolicyKit1/Authority
invoked by name :1.26
serial 299
========================================================================
GDBus-debug:Return:
>>>> METHOD ERROR org.freedesktop.PolicyKit1.Error.Failed
message `Cannot determine session the caller is in'
in response to org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
on object /org/freedesktop/PolicyKit1/Authority
to name :1.26
reply-serial 299
[...]
========================================================================
GDBus-debug:Incoming:
<<<< METHOD INVOCATION org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
on object /org/freedesktop/PolicyKit1/Authority
invoked by name :1.2402
serial 25
========================================================================
GDBus-debug:Return:
>>>> METHOD RETURN
in response to org.freedesktop.PolicyKit1.Authority.RegisterAuthenticationAgent()
on object /org/freedesktop/PolicyKit1/Authority
to name :1.2402
reply-serial 25
Signed-off-by: David Zeuthen <davidz@redhat.com>
The D-Bus spec mentions exactly what header fields are required for
various message types. Add tests for this as well.
Also disallow empty interfaces for signals since the D-Bus spec says
this is Verboten already.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Also use this in the test cases to check that serialization to and
from both big and little endian works.
Signed-off-by: David Zeuthen <davidz@redhat.com>
We use g_assert() instead of setting the GError because it is a
programming error if the GVariant contains invalid data - see commit
5e6f762d61 for where the last hole in
GVariant was closed.
So if we can trust GVariant to only contain valid data (ignoring the
case where unsafe API such as g_variant_new_from_data() is used), why
g_assert() at all with costly g_utf8_validate() checks? Because a) it
is relatively inexpensive; and b) it helps find bugs such as the one
fixed in commit 5e6f762d61.
If performance is a concern we can play games like introducing
environment variables or other machinery to avoid such "costly"
checks. I doubt it will ever be an issue.
Also replace two "Hmm" TODO item with a static assert - the code that
serializes a gdouble into the D-Bus wire format by treating it as a
guint64 is indeed correct - endianess needs to be taken into account
(see the D-Bus reference implementation for similar code). But we want
to make sure that we're indeed using an architecture/compiler where a
gdouble takes up 8 bytes - hence the assertion.
Signed-off-by: David Zeuthen <davidz@redhat.com>
Spell out "RECEIVED SIGNAL" instead of "SIGNAL" to emphasize this is
about receiving a signal, not emitting one (which is "SIGNAL
EMISSION"). Also make the "arrows" point in the "right" direction
("<<<<" vs ">>>>") - like this:
========================================================================
GDBus-debug:Signal:
<<<< RECEIVED SIGNAL org.freedesktop.DBus.NameOwnerChanged
on object /org/freedesktop/DBus
sent by name org.freedesktop.DBus
and
========================================================================
GDBus-debug:Incoming:
<<<< METHOD INVOCATION org.freedesktop.PolicyKit1.Authority.EnumerateTemporaryAuthorizations()
on object /org/freedesktop/PolicyKit1/Authority
invoked by name :1.2176
Signed-off-by: David Zeuthen <davidz@redhat.com>
Commit 5e6f762d61 (introducing UTF-8
validity checks for GVariant instances containing strsings) actually
uncovered a bug in glib-compile-schemas - a GString was passed when a
C string was expected.
Signed-off-by: David Zeuthen <davidz@redhat.com>
This should make things easier to debug:
g_dbus_connection_real_closed: Remote peer vanished with error:
Underlying GIOStream returned 0 bytes on an async read
(g-io-error-quark, 0). Exiting.
Signed-off-by: David Zeuthen <davidz@redhat.com>
the FdSource was calling g_cancellable_disconnect while holding the
main context lock, which is bad news if the ::cancelled handler is
trying to get that lock to wake up the mainloop...
Bug 586432
When binding a boolean setting to a boolean property, invert the values.
This avoids the requirement for writing a pair of mapping functions for
this extremely common case.
Add a test.
https://bugzilla.gnome.org/show_bug.cgi?id=625833
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>
