glibc string.h declares memcpy() with attribute(nonnull(1,2)), causing
calls with NULL arguments to be treated as undefined behaviour.
This is consistent with ISO C99 and C11, which state that passing 0
to string functions as an array length does not remove the requirement
that the pointer to the array is a valid pointer.
gcc -fsanitize=undefined catches this while running OSTree's test suite.
Similarly, running the GLib test suite reports similar issues for
qsort(), memmove(), memcmp().
Signed-off-by: Simon McVittie <smcv@debian.org>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=775510
Reviewed-by: Colin Walters
If we have an input parameter (or return value) we need to use (nullable).
However, if it is an (inout) or (out) parameter, (optional) is sufficient.
It looks like (nullable) could be used for everything according to the
Annotation documentation, but (optional) is more specific.
GApplication has accepted any valid bus name as an application ID since
before the time of D-Bus activation. This includes bus names with '-'.
Several applications have even attempted support bus activation with
these names, going as far as installing D-Bus service files, without
realising that they are silently falling back to fork()/exec() on
account of the name containing a dash.
The reason for the problem is that D-Bus object paths cannot contain
dashes. We solved this problem privately in an unspecified way inside
of GApplication but substituting '_' in this case, but never made this
part of the Desktop Entry Specification.
The fact that these apps with '-' in the desktop file names aren't
actually using D-Bus activation is beside the point: their intent here
was clear. Let's avoid forcing them to rename their desktop files again
by simply accepting '-' in desktop file names and munging the path in
the way that GApplication did so historically.
The new path escaping code here has been copied more or less verbatim
from GApplication's own code for the same purpose, with only the removal
of one irrelevant part.
An update to the desktop entry specification will follow.
https://bugzilla.gnome.org/show_bug.cgi?id=764754
The environment variable DISPLAY makes sense only for X11, it should
not be set in gio.
Beside, if the backend is not X11 but Wayland, forcing the value of
DISPLAY to the Wayland display will confuse the backend selection and
possibly crash the applications.
https://bugzilla.gnome.org/show_bug.cgi?id=754983
Always run the full algorithm for a given mime type before considering
fallback types.
This includes considering installed applications capable of handling a
particular mimetype, even if such an app is not explicitly marked as
default, and there is a default app for a less-specific type.
Specifically, this often helps with cases of installing apps that can
handle a particular subtype of text/plain. We want to take those apps
in preference to a generic text editor, even if that editor is listed as
the default for text/plain and there is no default listed for the more
specific type.
Because of the more holistic approach taken by the algorithm, it is now
more complicated, but it also means that we can do more work while
holding the lock. In turn, that lets us avoid duplicating some strings,
which is nice.
https://bugzilla.gnome.org/show_bug.cgi?id=744282
Remove all event merging and dispatch logic from GFileMonitor. The only
implementation of GFileMonitor outside of glib is in gvfs and it already
does these things properly.
Get rid of GLocalDirectoryMonitor. We will use a single class,
GLocalFileMonitor, for both directory and file monitoring. This will
prevent every single backend from having to create two objects
separately (eg: ginotifydirectorymonitor.c and ginotifyfilemonitor.c).
Introduce GFileMonitorSource as a thread-safe cross-context dispatch
mechanism. Put it in GLocalFileMonitor. All backends will be expected
to dispatch via the source and not touch the GFileMonitor object at all
from the worker thread.
Remove all construct properties from GLocalFileMonitor and remove the
"context" construct property from GFileMonitor. All backends must now
get the information about what file to monitor from the ->start() call
which is mandatory to implement.
Remove the implementation of rate limiting in GFileMonitor and add an
implementation in GLocalFileMonitor. gvfs never did anything with this
anyway, but if it wanted to, it would have to implement it for itself.
This was done in order to get the rate_limit field into the
GFileMonitorSource so that it could be safely accessed from the worker
thread.
Expose g_local_file_is_remote() internally for NFS detection.
With the "is_remote" functionality exposed, we can now move all
functions for creating local file monitors to a proper location in
glocalfilemonitor.c
Port the inotify backend to adjust to the changes above. None of the
other backends are ported yet. Those will come in future commits.
Commit e24e89b accidentally ironically introduced a typo when replacing
the code with symbolic contents. Specifically, "Added Associations" was
replaced with "Default Applications" when reading defaults.list, giving
a warning about the file containing a "Default Applications" group.
If this was intended, it should have not been lumped in with a cleanup.
Some desktop file directories, like /usr/local/share/applications may be
missing on some systems.
When we try to inotify on these directories, this will result in a
every-4-seconds poll being setup which is quite bad.
This is an issue that should be fixed in inotify itself but the problem
is much larger there. For now, we can work around it in GDesktopAppInfo
by refusing to monitor missing directories.
We may get some spurious notifications of changes in the case that
/usr/local/share or /usr/local/share/applications is created without
actually adding desktop files, but spurious changes can already be
reported in other cases, so that's OK. We won't get (user-visible)
notification for a simple case of a completely unrelated file being
created (however we cannot avoid the wakeup in this case due to how
inotify works). That's probably pretty theoretical, though, since files
in /usr don't change much and for the home directory we're likely to
have at least ~/.config and ~/.local existing.
https://bugzilla.gnome.org/show_bug.cgi?id=736350
We use "tweaks" structures to track how a particular directory impacts
the list of added, removed and default applications. We maintain this
set of tweaks for each directory, in a hash table, keyed by unaliased
mime type name, in order to facilitate fast lookups.
A typo in the logic for creating and maintaining the uniqueness of these
structures was causing the default app to be selected incorrectly from
time to time. Fix that.
Expand the functionality of g_desktop_app_info_set_desktop_env() to
include the possibility of passing strings containing ':' characters (as
some apps, such as gnome-session, are directly passing the value of
XDG_CURRENT_DESKTOP). At the same time, deprecate it, since now we get
the list from the environment variable for ourselves.
Modify the checks in g_desktop_app_info_get_show_in() to deal with
multiple items listed in XDG_CURRENT_DESKTOP. For example, if we find
that we have
XDG_CURRENT_DESKTOP=GNOME-Classic:GNOME
and a desktop file contains:
OnlyShowIn=GNOME
then we will show this file because of the fallback to GNOME. If the
file _also_ contains the line:
NotShowIn=GNOME-Classic
Then we will not show it, because GNOME-Classic comes before GNOME in
XDG_CURRENT_DESKTOP.
https://bugzilla.gnome.org/show_bug.cgi?id=729813
Redo the code for type-based selection of applications (all,
recommended, default, fallback) based on the new DesktopFileDir
structures that we introduced last cycle.
At the same time, we expand the functionality to add support for the new
features of the specification:
- moving ~/.local/share/applications/mimeapps.list to ~/.config/
- per-desktop default applications (via XDG_CURRENT_DESKTOP)
- sysadmin customisation of defaults (via /etc/xdg/mimeapps.list)
- deprecation of the old defaults.list, favouring the use of
/usr/share/applications/mimeapps.list (or gnome-mimeapps.list) to
accomplish the same
We modify the mimeapps testcase to check for mimeapps.list having been
created in XDG_CONFIG_HOME instead of XDG_DATA_HOME.
The modification is a net reduction of code (due to less duplication in
bookkeeping). It is also an increase in performance and reduction in
memory consumption (due to simplified data structures). Finally, it
removes the stat-based timestamp checking in favour of the
GFileMonitor-based approach that was already being used in the
implementation of DesktopFileDir (in order to know if we had to rescan
the desktop files themselves).
https://bugzilla.gnome.org/show_bug.cgi?id=728040
The app launch context may just not support startup notification,
in which case, g_app_launch_context_get_startup_notify_id() will
return NULL.
Failure to take this into account leads to criticals like this:
gnome-session[8489]: GLib-CRITICAL: g_variant_new_take_string: assertion 'string != NULL' failed
gnome-session[8489]: GLib-CRITICAL: g_variant_new_variant: assertion 'value != NULL' failed
gnome-session[8489]: GLib-CRITICAL: g_variant_get_type: assertion 'value != NULL' failed
gnome-session[8489]: GLib-CRITICAL: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed
https://bugzilla.gnome.org/show_bug.cgi?id=728066
Add the basename from the first component of the Exec line to the list of
strings to search for via g_desktop_app_info_search().
We treat Exec as a fairly strong match -- just below the visible name.
Add a testcase to make sure everything is working OK.
https://bugzilla.gnome.org/show_bug.cgi?id=725023
Since all element markup is now gone from the doc comments,
we can turn off the gtk-doc sgml mode, which means that from
now on, docbook markup is no longer allowed in doc comments.
To make this possible, we have to replace all remaining
entities in doc comments by their replacement text, & -> &
and so on.
Add missing (allow-none) annotations to
g_desktop_app_info_launch_uris_as_manager(). Tested with
python -c "from gi.repository import GLib, Gio; Gio.DesktopAppInfo.new('gcalctool.desktop').launch_uris_as_manager([], None, GLib.SpawnFlags.SEARCH_PATH|GLib.SpawnFlags.STDOUT_TO_DEV_NULL, None, None, None, None)"
which is necessary to do a launch_uris() without leaking stdout.
https://launchpad.net/bugs/1259721
It makes sense to match on GenericName in case an application does
not provide any keywords, but the Keywords field has been added
to explicitly support the search case, while GenericName was used
to be displayed in menus, so it makes more sense to consider
Keywords more (or equally) relevant for search.
https://bugzilla.gnome.org/show_bug.cgi?id=711640
The first time this function is called we load all of the keyfiles in
the directory, ignoring the 'Hidden' ones and build an index out of the
interesting fields using g_str_tokenize_and_fold().
We do prefix matching on the tokens to find relevent desktop files.
Right now this is implemented as a hashtable that we iterate over,
checking prefixes on each token. This could possibly be sped up by
creating an array, but it's already pretty fast...
https://bugzilla.gnome.org/show_bug.cgi?id=711557
In each DesktopFileDir, store a list of desktop files for that
directory. This speeds up opening desktop files by name because we can
skip statting in directories that we know don't have the file and also
speeds up _get_all() because we can avoid enumeration.
This also improves our support for dealing with names like
'kde4/kate.desktop' (equivalent to kde4-kate.desktop) since we find out
about all of these files are the start and don't need to guess about
which '-' to change to a '/'. It also means that we can easily deal
with more than one level of such prefixes.
We use a file monitor to watch for changes, invalidating our lists when
we notice them.
https://bugzilla.gnome.org/show_bug.cgi?id=711520
Fix up a lot of whitespace issues in this file since we're about to do
some pretty serious rewriting here anyway...
Add some fold markers while we're at it.
Change the search path to be a global array of 'DesktopFileDir' structures and
change the 'get' function to an 'ensure' function.
This is just a straight-up refactor. Future patches will expand the
DesktopFileDir structure.
Rather than always calling out to g_file_get_path() (which
might block, whatever the documentation might say), postpone
the call until we actually need it.
https://bugzilla.gnome.org/show_bug.cgi?id=708753
A previous version of the patch had OnlyShowIn support for desktop file
actions. This was removed from the spec and the patch rewritten, but
this bit of documentation slipped through. Remove it.
For some time, the desktop file specification has supported "additional
application actions". This is intended to allow for additional methods
of starting an app, such as a mail client having a "Compose New Message"
action that brings up the compose window instead of the folder list.
This patch adds support for this with a relatively minimal API.
In the case that the application is a GApplication and DBusActivatable,
desktop actions are translated into GActions that have been added to the
application with g_action_map_add_action(). This more or less closes
the loop on being able to activate an application with an action
invocation (instead of 'activate').
https://bugzilla.gnome.org/show_bug.cgi?id=664444
There are two benefits to this:
1) We can centralize any operating system specific knowledge of
close-vs-EINTR handling. For example, while on Linux we should never
retry, if someone cared enough later about HP-UX, they could come by
and change this one spot.
2) For places that do care about the return value and want to provide
the caller with a GError, this function makes it convenient to do so.
Note that gspawn.c had an incorrect EINTR loop-retry around close().
https://bugzilla.gnome.org/show_bug.cgi?id=682819
gnome-session needs to know the startup id that was given to
a started app; this was not available via GAppLaunchContext.
This commit adds a ::launched signal to get this information.
At the same time, turn the launch_failed vfunc into a signal
as well.
https://bugzilla.gnome.org/show_bug.cgi?id=688497
gnome-session still uses EggDesktopFile, since GDesktopAppInfo is
missing a handful of APIs that are needed to implement the
autostart spec. This patch adds the minimum that is required.
https://bugzilla.gnome.org/show_bug.cgi?id=688497
Many (if not "almost all") programs that spawn other programs via
g_spawn_sync() or the like simply want to check whether or not the
child exited successfully, but doing so requires use of
platform-specific functionality and there's actually a fair amount of
boilerplate involved.
This new API will help drain a *lot* of mostly duplicated code in
GNOME, from gnome-session to gdm. And we can see that some bits even
inside GLib were doing it wrong; for example checking the exit status
on Unix, but ignoring it on Windows.
https://bugzilla.gnome.org/show_bug.cgi?id=679691
We need to ignore the defaults.list item only when there
was a mimetype handler found in a previous mimetype, not
if one was found for the same mimetype as the one that
is listed in defaults.list (same for the new-style defaults).
There was an issue when looking up the default handler
for a type where a supertype was listed in defaults.list.
We would pick the default for the parent type even if
there was a handler for the more specific type.
In the case of the new-style defaults marking (
"Default Applications" in mimeapps.list) we were already
checking for a more specific handler befor using a default,
but we also need to do a similar check for the defaults.list
case.
https://bugzilla.gnome.org/show_bug.cgi?id=678944
This essentially adds an accessor for the MimeType field in desktop files,
to retrieve the list of all mime types supported by an application.
The interface though is part of GAppInfo, so it could be implemented
in the future by other backends.
https://bugzilla.gnome.org/show_bug.cgi?id=674111
If the launch context is a GAppLaunchContext, and not a
GdkAppLaunchContext, then g_app_launch_context_get_display will return
NULL because the get_display virtual method is undefined. The DISPLAY
might still be inherited from the parent process, in which case
overwriting it with NULL breaks the launch.
This is a regression introduced in:
de834bed30
Fixes: https://bugzilla.gnome.org/672786
Add new macros to disable -Wdeprecated-declarations around a piece of
code, using the C99 (and GNU89) _Pragma() operator. Replace the
existing use of #pragma for this in gio, and suppress the warnings in
gvaluearray.c as well.
https://bugzilla.gnome.org/show_bug.cgi?id=669671
Add functions for manipulating the environment under which a
GAppLaunchContext will launch its children, to avoid thread-related
bugs with using setenv() directly.
FIXME: win32 side isn't implemented yet
https://bugzilla.gnome.org/show_bug.cgi?id=659326
With search gaining traction as being the preferred way to locate
applications, the existing .desktop file fields meant for browsing
often produce insufficient results.
gnome-control-center introduced a custom X-GNOME-Keywords field for
that purpose, which we plan to support in gnome-shell as well.
https://bugzilla.gnome.org/show_bug.cgi?id=661763
Previously, we took the default application for a particular mimetype
from the system and copied it into the user's configuration as the
default there.
Instead of doing that we leave the user's default unset, and at time of
use, if the user has no explicitly-set default value, we use the system
default.
This avoids complicated situations where inappropriate applications were
being set as the default in the user's configuration.
https://bugzilla.gnome.org/show_bug.cgi?id=658188
* Do not ignore the system default
* Do not exclude the last used being set from the default list
This fixes the default applications dialog in control-center.
https://bugzilla.gnome.org/show_bug.cgi?id=658188
g_desktop_app_info_set_as_default_for_type() and
g_desktop_app_info_set_as_last_used_for_type () require the
application's ID, but depending on how the GAppInfo was created,
we might not be have one, and would thus silently fail to set
the default application, or last used application.
https://bugzilla.gnome.org/show_bug.cgi?id=657445
GDesktopAppInfo violates the GObject rule that your C constructors
should just be thin wrappers around g_object_new(). While GKeyFile
isn't introspctable, this patch allows from JavaScript:
var app = new Gio.DesktopAppInfo({ filename: '/path/to/foo.desktop' });
https://bugzilla.gnome.org/show_bug.cgi?id=648425
We were considering explicitly configured defaults for parent types
after we already got results for the specific type we're interested in.
This resulted in the explicit default for text/plain to override all
system defaults for subtypes of text/plain, for example. The explicit
default should not apply to subtypes that have a system default.
https://bugzilla.gnome.org/show_bug.cgi?id=642797
This will help applications such as zeitgeist's datahub to collect
more complete information about application launches, as the "actor"
of a launch is important for zeitgeist's magic to work properly.
If we were the initial connection owner, unref will destroy the
connection immediately, and we may lose messages. Asynchronously
flush to avoid that.
https://bugzilla.gnome.org/show_bug.cgi?id=641411
If code creates a GDesktopAppInfo via g_desktop_app_info_new_from_keyfile(),
we'd try to send a NULL pointer down into GVariant.
Since in this case we don't have a filename, just send the empty
string. In the future we should either:
1) Change panel to use g_desktop_app_info_new_from_filename(), and
take the hit of parsing the file twice.
2) Add a g_key_file_get_origin_filename()
3) Add g_desktop_app_info_new_from_keyfile_and_name()
https://bugzilla.gnome.org/show_bug.cgi?id=638838
A new GDesktopAppInfo specific function which provides more control
over launched processes. Intended basically only for use in GNOME
Shell, where we want:
*) To directly know the GPid for each launched program, without
having to listen to a DBus signal emitted in our own process
*) Possibly control over the process environment; for example,
we may want to call setsid() or redirect file descriptors.
And in the future:
*) To avoid recursively calling ourself via DBus, when a later
patch causes g_app_info_launch() to indirect via the shell.
https://bugzilla.gnome.org/show_bug.cgi?id=606960
