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@ -0,0 +1,391 @@
|
||||
From 31ebedebf1d9850a4c699af5cfe57b81e908f642 Mon Sep 17 00:00:00 2001
|
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From: Jan Rybar <jrybar@redhat.com>
|
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Date: Thu, 23 May 2024 08:59:11 +0200
|
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Subject: [PATCH 1/3] Only instances affected by sessions change should call
|
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for CheckAuthorization (#453)
|
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* Only instances affected by sessions change should call for
|
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CheckAuthorization
|
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Currently, every time the systemd-logind monitor sends a notification
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about change in sessions, all instances of PolkitPermission (and
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probably other classes using PolkitAuthority) send CheckAuthorization to
|
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the daemon even though their session is not affected. This hogs the cpu
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needlessly, because ALL programs/applets in ALL instances for ALL users
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send CheckAuthorization, making each such request even repeated.
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|
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This PR adds recognition of a change in sessions, adds it to the
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"Changed" dbus signal as a parameter, and on the client side of polkit
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(i.e. PolkitAuthority) enables to react accordingly. This enables
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PolkitPermission to assess whether the session change affects just the
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objects in affected sessions.
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---
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data/org.freedesktop.PolicyKit1.Authority.xml | 2 +-
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src/polkit/polkitauthority.c | 32 ++++++-
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src/polkit/polkitpermission.c | 87 +++++++++++++++++++
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src/polkitbackend/polkitbackendauthority.c | 54 +++++++++++-
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.../polkitbackendinteractiveauthority.c | 2 +-
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5 files changed, 170 insertions(+), 7 deletions(-)
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diff --git a/data/org.freedesktop.PolicyKit1.Authority.xml b/data/org.freedesktop.PolicyKit1.Authority.xml
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index 453ffc8..214b8c2 100644
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--- a/data/org.freedesktop.PolicyKit1.Authority.xml
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+++ b/data/org.freedesktop.PolicyKit1.Authority.xml
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@@ -431,7 +431,7 @@ Must match the effective UID of the caller of org.freedesktop.PolicyKit1.Authori
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<!-- ---------------------------------------------------------------------------------------------------- -->
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<signal name="Changed">
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- <annotation name="org.gtk.EggDBus.DocString" value="This signal is emitted when actions and/or authorizations change"/>
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+ <annotation name="org.gtk.EggDBus.DocString" value="This signal is emitted when actions, sessions and/or authorizations change, carrying information about the change."/>
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</signal>
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</interface>
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diff --git a/src/polkit/polkitauthority.c b/src/polkit/polkitauthority.c
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index 71d527c..08cb511 100644
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--- a/src/polkit/polkitauthority.c
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+++ b/src/polkit/polkitauthority.c
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@@ -84,6 +84,7 @@ static PolkitAuthority *the_authority = NULL;
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enum
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{
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CHANGED_SIGNAL,
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+ SESSIONS_CHANGED_SIGNAL,
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LAST_SIGNAL,
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};
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|
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@@ -113,9 +114,23 @@ on_proxy_signal (GDBusProxy *proxy,
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gpointer user_data)
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{
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PolkitAuthority *authority = POLKIT_AUTHORITY (user_data);
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+ guint16 msg_mask;
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+
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if (g_strcmp0 (signal_name, "Changed") == 0)
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{
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- g_signal_emit_by_name (authority, "changed");
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+ if ((parameters != NULL) && g_variant_check_format_string(parameters, "(q)", FALSE))
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+ {
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+ g_variant_get(parameters, "(q)", &msg_mask);
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+ if (msg_mask >= LAST_SIGNAL)
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+ {
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+ msg_mask = CHANGED_SIGNAL; /* If signal not valid, we send generic "changed". */
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+ }
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+ g_signal_emit (authority, signals[msg_mask], 0);
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+ }
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+ else
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+ {
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+ g_signal_emit_by_name (authority, "changed");
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+ }
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}
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}
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|
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@@ -287,6 +302,21 @@ polkit_authority_class_init (PolkitAuthorityClass *klass)
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE,
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0);
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+ /**
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+ * PolkitAuthority::sessions-changed:
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+ * @authority: A #PolkitAuthority.
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+ *
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+ * Emitted when sessions change
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+ */
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+ signals[SESSIONS_CHANGED_SIGNAL] = g_signal_new ("sessions-changed",
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+ POLKIT_TYPE_AUTHORITY,
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+ G_SIGNAL_RUN_LAST,
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+ 0, /* class offset */
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+ NULL, /* accumulator */
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+ NULL, /* accumulator data */
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+ g_cclosure_marshal_VOID__VOID,
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+ G_TYPE_NONE,
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+ 0);
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}
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/* ---------------------------------------------------------------------------------------------------- */
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diff --git a/src/polkit/polkitpermission.c b/src/polkit/polkitpermission.c
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index d4b2459..c53f2cb 100644
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--- a/src/polkit/polkitpermission.c
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+++ b/src/polkit/polkitpermission.c
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@@ -24,6 +24,10 @@
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# include "config.h"
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#endif
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+#ifdef HAVE_LIBSYSTEMD
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+# include <systemd/sd-login.h>
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+#endif
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+
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#include <sys/types.h>
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#include <unistd.h>
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@@ -60,6 +64,8 @@ struct _PolkitPermission
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|
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gchar *action_id;
|
||||
|
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+ gchar *session_state;
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||||
+
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/* non-NULL exactly when authorized with a temporary authorization */
|
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gchar *tmp_authz_id;
|
||||
};
|
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@@ -74,9 +80,14 @@ enum
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static void process_result (PolkitPermission *permission,
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PolkitAuthorizationResult *result);
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+static char *get_session_state();
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+
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static void on_authority_changed (PolkitAuthority *authority,
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gpointer user_data);
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|
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+static void on_sessions_changed (PolkitAuthority *authority,
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+ gpointer user_data);
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+
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static gboolean acquire (GPermission *permission,
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GCancellable *cancellable,
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GError **error);
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@@ -126,6 +137,8 @@ polkit_permission_constructed (GObject *object)
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if (G_OBJECT_CLASS (polkit_permission_parent_class)->constructed != NULL)
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G_OBJECT_CLASS (polkit_permission_parent_class)->constructed (object);
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+
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+ permission->session_state = get_session_state();
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}
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static void
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@@ -135,6 +148,7 @@ polkit_permission_finalize (GObject *object)
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|
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g_free (permission->action_id);
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g_free (permission->tmp_authz_id);
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+ g_free (permission->session_state);
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g_object_unref (permission->subject);
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|
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if (permission->authority != NULL)
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@@ -142,6 +156,9 @@ polkit_permission_finalize (GObject *object)
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g_signal_handlers_disconnect_by_func (permission->authority,
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on_authority_changed,
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permission);
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+ g_signal_handlers_disconnect_by_func (permission->authority,
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+ on_sessions_changed,
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+ permission);
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g_object_unref (permission->authority);
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}
|
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|
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@@ -420,6 +437,11 @@ polkit_permission_initable_init (GInitable *initable,
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G_CALLBACK (on_authority_changed),
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permission);
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|
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+ g_signal_connect (permission->authority,
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+ "sessions-changed",
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+ G_CALLBACK (on_sessions_changed),
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+ permission);
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+
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result = polkit_authority_check_authorization_sync (permission->authority,
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permission->subject,
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permission->action_id,
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@@ -472,6 +494,37 @@ changed_check_cb (GObject *source_object,
|
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g_object_unref (permission);
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}
|
||||
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+static char *get_session_state()
|
||||
+{
|
||||
+#ifdef HAVE_LIBSYSTEMD
|
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+ char *session = NULL;
|
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+ char *state = NULL;
|
||||
+ uid_t uid;
|
||||
+
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+ if ( sd_pid_get_session(getpid(), &session) < 0 )
|
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+ {
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+ if ( sd_pid_get_owner_uid(getpid(), &uid) < 0)
|
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+ {
|
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+ goto out;
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+ }
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+ if (sd_uid_get_display(uid, &session) < 0)
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+ {
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+ goto out;
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+ }
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+ }
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+
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+ if (session != NULL)
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+ {
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+ sd_session_get_state(session, &state);
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+ }
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+out:
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+ g_free(session);
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+ return state;
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+#else
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+ return NULL;
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+#endif
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+}
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+
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static void
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on_authority_changed (PolkitAuthority *authority,
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gpointer user_data)
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@@ -488,6 +541,40 @@ on_authority_changed (PolkitAuthority *authority,
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g_object_ref (permission));
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}
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|
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+
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+static void on_sessions_changed (PolkitAuthority *authority,
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+ gpointer user_data)
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+{
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+#ifdef HAVE_LIBSYSTEMD
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+ char *new_session_state = NULL;
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+ char *last_state = NULL;
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+
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+ PolkitPermission *permission = POLKIT_PERMISSION (user_data);
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+
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+ new_session_state = get_session_state();
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+
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+ /* if we cannot tell the session state, we should do CheckAuthorization anyway */
|
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+ if ((new_session_state == NULL) || ( g_strcmp0(new_session_state, permission->session_state) != 0 ))
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+ {
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+ last_state = permission->session_state;
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+ permission->session_state = new_session_state;
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+ g_free(last_state);
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+
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+ polkit_authority_check_authorization (permission->authority,
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+ permission->subject,
|
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+ permission->action_id,
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+ NULL, /* PolkitDetails */
|
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+ POLKIT_CHECK_AUTHORIZATION_FLAGS_NONE,
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+ NULL /* cancellable */,
|
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+ changed_check_cb,
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+ g_object_ref (permission));
|
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+ }
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+#else
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+ on_authority_changed(authority, user_data); /* TODO: resolve the "too many session signals" issue for non-systemd systems later */
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+#endif
|
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+}
|
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+
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+
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static void
|
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process_result (PolkitPermission *permission,
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PolkitAuthorizationResult *result)
|
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diff --git a/src/polkitbackend/polkitbackendauthority.c b/src/polkitbackend/polkitbackendauthority.c
|
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index d4c6f7d..c74216e 100644
|
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--- a/src/polkitbackend/polkitbackendauthority.c
|
||||
+++ b/src/polkitbackend/polkitbackendauthority.c
|
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@@ -48,6 +48,7 @@
|
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enum
|
||||
{
|
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CHANGED_SIGNAL,
|
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+ SESSIONS_CHANGED_SIGNAL,
|
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LAST_SIGNAL,
|
||||
};
|
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|
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@@ -78,6 +79,15 @@ polkit_backend_authority_class_init (PolkitBackendAuthorityClass *klass)
|
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g_cclosure_marshal_VOID__VOID,
|
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G_TYPE_NONE,
|
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0);
|
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+ signals[SESSIONS_CHANGED_SIGNAL] = g_signal_new ("sessions-changed",
|
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+ POLKIT_BACKEND_TYPE_AUTHORITY,
|
||||
+ G_SIGNAL_RUN_LAST,
|
||||
+ G_STRUCT_OFFSET (PolkitBackendAuthorityClass, changed),
|
||||
+ NULL, /* accumulator */
|
||||
+ NULL, /* accumulator data */
|
||||
+ g_cclosure_marshal_VOID__VOID,
|
||||
+ G_TYPE_NONE,
|
||||
+ 0);
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -501,6 +511,8 @@ typedef struct
|
||||
|
||||
gulong authority_changed_id;
|
||||
|
||||
+ gulong authority_session_monitor_signaller;
|
||||
+
|
||||
gchar *object_path;
|
||||
|
||||
GHashTable *cancellation_id_to_check_auth_data;
|
||||
@@ -523,6 +535,9 @@ server_free (Server *server)
|
||||
if (server->authority != NULL && server->authority_changed_id > 0)
|
||||
g_signal_handler_disconnect (server->authority, server->authority_changed_id);
|
||||
|
||||
+ if (server->authority != NULL && server->authority_session_monitor_signaller > 0)
|
||||
+ g_signal_handler_disconnect (server->authority, server->authority_session_monitor_signaller);
|
||||
+
|
||||
if (server->cancellation_id_to_check_auth_data != NULL)
|
||||
g_hash_table_unref (server->cancellation_id_to_check_auth_data);
|
||||
|
||||
@@ -531,20 +546,23 @@ server_free (Server *server)
|
||||
g_free (server);
|
||||
}
|
||||
|
||||
-static void
|
||||
-on_authority_changed (PolkitBackendAuthority *authority,
|
||||
- gpointer user_data)
|
||||
+static void changed_dbus_call_handler(PolkitBackendAuthority *authority,
|
||||
+ gpointer user_data,
|
||||
+ guint16 msg_mask)
|
||||
{
|
||||
Server *server = user_data;
|
||||
GError *error;
|
||||
+ GVariant *parameters;
|
||||
|
||||
error = NULL;
|
||||
+
|
||||
+ parameters = g_variant_new("(q)", msg_mask);
|
||||
if (!g_dbus_connection_emit_signal (server->connection,
|
||||
NULL, /* destination bus name */
|
||||
server->object_path,
|
||||
"org.freedesktop.PolicyKit1.Authority",
|
||||
"Changed",
|
||||
- NULL,
|
||||
+ parameters,
|
||||
&error))
|
||||
{
|
||||
g_warning ("Error emitting Changed() signal: %s", error->message);
|
||||
@@ -552,6 +570,29 @@ on_authority_changed (PolkitBackendAuthority *authority,
|
||||
}
|
||||
}
|
||||
|
||||
+
|
||||
+static void
|
||||
+on_authority_changed (PolkitBackendAuthority *authority,
|
||||
+ gpointer user_data)
|
||||
+{
|
||||
+ guint16 msg_mask;
|
||||
+
|
||||
+ msg_mask = (guint16) CHANGED_SIGNAL;
|
||||
+ changed_dbus_call_handler(authority, user_data, msg_mask);
|
||||
+}
|
||||
+
|
||||
+
|
||||
+static void
|
||||
+on_sessions_changed (PolkitBackendAuthority *authority,
|
||||
+ gpointer user_data)
|
||||
+{
|
||||
+ guint16 msg_mask;
|
||||
+
|
||||
+ msg_mask = (guint16) SESSIONS_CHANGED_SIGNAL;
|
||||
+ changed_dbus_call_handler(authority, user_data, msg_mask);
|
||||
+}
|
||||
+
|
||||
+
|
||||
static const gchar *server_introspection_data =
|
||||
"<node>"
|
||||
" <interface name='org.freedesktop.PolicyKit1.Authority'>"
|
||||
@@ -1397,6 +1438,11 @@ polkit_backend_authority_register (PolkitBackendAuthority *authority,
|
||||
G_CALLBACK (on_authority_changed),
|
||||
server);
|
||||
|
||||
+ server->authority_session_monitor_signaller = g_signal_connect (server->authority,
|
||||
+ "sessions-changed",
|
||||
+ G_CALLBACK (on_sessions_changed),
|
||||
+ server);
|
||||
+
|
||||
return server;
|
||||
|
||||
error:
|
||||
diff --git a/src/polkitbackend/polkitbackendinteractiveauthority.c b/src/polkitbackend/polkitbackendinteractiveauthority.c
|
||||
index 9dab476..517e715 100644
|
||||
--- a/src/polkitbackend/polkitbackendinteractiveauthority.c
|
||||
+++ b/src/polkitbackend/polkitbackendinteractiveauthority.c
|
||||
@@ -284,7 +284,7 @@ on_session_monitor_changed (PolkitBackendSessionMonitor *monitor,
|
||||
gpointer user_data)
|
||||
{
|
||||
PolkitBackendInteractiveAuthority *authority = POLKIT_BACKEND_INTERACTIVE_AUTHORITY (user_data);
|
||||
- g_signal_emit_by_name (authority, "changed");
|
||||
+ g_signal_emit_by_name (authority, "sessions-changed");
|
||||
}
|
||||
|
||||
static void
|
||||
--
|
||||
2.40.1
|
||||
|
||||
@ -0,0 +1,66 @@
|
||||
commit 6c9c07981f7ac7e7dfde05fa8210ae4204d31139
|
||||
Author: Jan Rybar <jrybar@redhat.com>
|
||||
Date: Mon Mar 11 16:55:40 2024 +0100
|
||||
|
||||
pkttyagent: EOF in password causes coredump
|
||||
|
||||
diff --git a/src/polkitagent/polkitagenttextlistener.c b/src/polkitagent/polkitagenttextlistener.c
|
||||
index 99af1d1..2ce4098 100644
|
||||
--- a/src/polkitagent/polkitagenttextlistener.c
|
||||
+++ b/src/polkitagent/polkitagenttextlistener.c
|
||||
@@ -330,6 +330,7 @@ on_request (PolkitAgentSession *session,
|
||||
PolkitAgentTextListener *listener = POLKIT_AGENT_TEXT_LISTENER (user_data);
|
||||
struct termios ts, ots;
|
||||
GString *str;
|
||||
+ gint c;
|
||||
|
||||
fprintf (listener->tty, "%s", request);
|
||||
fflush (listener->tty);
|
||||
@@ -374,7 +375,6 @@ on_request (PolkitAgentSession *session,
|
||||
str = g_string_new (NULL);
|
||||
while (TRUE)
|
||||
{
|
||||
- gint c;
|
||||
c = getc (listener->tty);
|
||||
if (c == '\n')
|
||||
{
|
||||
@@ -384,8 +384,7 @@ on_request (PolkitAgentSession *session,
|
||||
else if (c == EOF)
|
||||
{
|
||||
tcsetattr (fileno (listener->tty), TCSAFLUSH, &ots);
|
||||
- g_error ("Got unexpected EOF while reading from controlling terminal.");
|
||||
- abort ();
|
||||
+ g_warning ("Got unexpected EOF while reading from controlling terminal.");
|
||||
break;
|
||||
}
|
||||
else
|
||||
@@ -397,7 +396,15 @@ on_request (PolkitAgentSession *session,
|
||||
g_signal_emit_by_name(listener, "tty_attrs_changed", FALSE);
|
||||
putc ('\n', listener->tty);
|
||||
|
||||
- polkit_agent_session_response (session, str->str);
|
||||
+ if (c == EOF)
|
||||
+ {
|
||||
+ polkit_agent_session_cancel (listener->active_session);
|
||||
+ }
|
||||
+ else
|
||||
+ {
|
||||
+ polkit_agent_session_response (session, str->str);
|
||||
+ }
|
||||
+
|
||||
memset (str->str, '\0', str->len);
|
||||
g_string_free (str, TRUE);
|
||||
}
|
||||
@@ -512,9 +519,9 @@ choose_identity (PolkitAgentTextListener *listener,
|
||||
}
|
||||
else if (c == EOF)
|
||||
{
|
||||
- g_error ("Got unexpected EOF while reading from controlling terminal.");
|
||||
- abort ();
|
||||
- break;
|
||||
+ g_warning ("Got unexpected EOF while reading from controlling terminal.");
|
||||
+ ret = NULL; /* let' be defensive */
|
||||
+ goto out;
|
||||
}
|
||||
else
|
||||
{
|
||||
@ -0,0 +1,13 @@
|
||||
diff --git a/src/polkitbackend/polkitbackendsessionmonitor-systemd.c b/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
|
||||
index 1a6107a..3abd7c5 100644
|
||||
--- a/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
|
||||
+++ b/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
|
||||
@@ -106,7 +106,7 @@ sd_source_new (void)
|
||||
source = g_source_new (&sd_source_funcs, sizeof (SdSource));
|
||||
sd_source = (SdSource *)source;
|
||||
|
||||
- if ((ret = sd_login_monitor_new (NULL, &sd_source->monitor)) < 0)
|
||||
+ if ((ret = sd_login_monitor_new ("session", &sd_source->monitor)) < 0)
|
||||
{
|
||||
g_printerr ("Error getting login monitor: %d", ret);
|
||||
}
|
||||
Loading…
Reference in new issue