chiark / gitweb /
udev-acl: catch up with ConsoleKit 0.4.1
authorWilliam Jon McCann <william.jon.mccann@gmail.com>
Sun, 27 Sep 2009 13:37:26 +0000 (06:37 -0700)
committerKay Sievers <kay.sievers@vrfy.org>
Sun, 27 Sep 2009 13:37:26 +0000 (06:37 -0700)
Makefile.am
NEWS
extras/udev-acl/udev-acl.c

index 846152d..af321d8 100644 (file)
@@ -422,8 +422,8 @@ dist_udevrules_DATA += extras/udev-acl/70-acl.rules
 libexec_PROGRAMS += extras/udev-acl/udev-acl
 
 udevacl-install-hook:
-       mkdir -p $(DESTDIR)$(prefix)/lib/ConsoleKit/run-session.d
-       ln -sf $(libexecdir)/udev-acl $(DESTDIR)$(prefix)/lib/ConsoleKit/run-session.d/udev-acl.ck
+       mkdir -p $(DESTDIR)$(prefix)/lib/ConsoleKit/run-seat.d
+       ln -sf $(libexecdir)/udev-acl $(DESTDIR)$(prefix)/lib/ConsoleKit/run-seat.d/udev-acl.ck
 
 INSTALL_EXEC_HOOKS += udevacl-install-hook
 
diff --git a/NEWS b/NEWS
index 8019bb1..27b778f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -24,6 +24,9 @@ be added to the compat rules file.
 Symlinks to udevadm with the old command names are no longer resolved to
 the udevadm commands.
 
+The udev-acl tool got adopted to changes in ConsoleKit. Version 0.4.11 is
+required now.
+
 udev 146
 ========
 Bugfixes.
index 3eb29fe..e670ce7 100644 (file)
 
 static int debug;
 
+enum{
+       ACTION_NONE = 0,
+       ACTION_REMOVE,
+       ACTION_ADD,
+       ACTION_CHANGE
+};
+
 static int set_facl(const char* filename, uid_t uid, int add)
 {
        int get;
@@ -152,44 +159,123 @@ static GSList *uids_with_local_active_session(const char *own_id)
 }
 
 /* ConsoleKit calls us with special variables */
-static int consolekit_called(const char *action, uid_t *uid, const char **own_session, int *add)
+static int consolekit_called(const char *ck_action, uid_t *uid, uid_t *uid2, const char **remove_session_id, int *action)
 {
-       int a;
-       uid_t u;
+       int a = ACTION_NONE;
+       uid_t u = 0;
+       uid_t u2 = 0;
        const char *s;
-       const char *session;
-
-       if (action == NULL || strcmp(action, "session_active_changed") != 0)
-               return -1;
+       const char *s2;
+       const char *old_session = NULL;
 
-       s = getenv("CK_SESSION_IS_LOCAL");
-       if (s == NULL)
+       if (ck_action == NULL || strcmp(ck_action, "seat_active_session_changed") != 0)
                return -1;
-       if (strcmp(s, "true") != 0)
-               return 0;
 
-       s = getenv("CK_SESSION_IS_ACTIVE");
-       if (s == NULL)
+       /* We can have one of: remove, add, change, no-change */
+       s = getenv("CK_SEAT_OLD_SESSION_ID");
+       s2 = getenv("CK_SEAT_SESSION_ID");
+       if (s == NULL && s2 == NULL) {
                return -1;
-       if (strcmp(s, "true") == 0)
-               a = 1;
-       else
-               a = 0;
+       } else if (s2 == NULL) {
+               a = ACTION_REMOVE;
+       } else if (s == NULL) {
+               a = ACTION_ADD;
+       } else {
+               a = ACTION_CHANGE;
+       }
 
-       session = getenv("CK_SESSION_ID");
-       if (session == NULL)
-               return -1;
+       switch (a) {
+       case ACTION_ADD:
+               s = getenv("CK_SEAT_SESSION_USER_UID");
+               if (s == NULL)
+                       return -1;
+               u = strtoul(s, NULL, 10);
+               if (u == 0)
+                       return 0;
+
+               s = getenv("CK_SEAT_SESSION_IS_LOCAL");
+               if (s == NULL)
+                       return -1;
+               if (strcmp(s, "true") != 0)
+                       return 0;
+
+               break;
+       case ACTION_REMOVE:
+               s = getenv("CK_SEAT_OLD_SESSION_USER_UID");
+               if (s == NULL)
+                       return -1;
+               u = strtoul(s, NULL, 10);
+               if (u == 0)
+                       return 0;
+
+               s = getenv("CK_SEAT_OLD_SESSION_IS_LOCAL");
+               if (s == NULL)
+                       return -1;
+               if (strcmp(s, "true") != 0)
+                       return 0;
+
+               old_session = getenv("CK_SEAT_OLD_SESSION_ID");
+               if (old_session == NULL)
+                       return -1;
+
+               break;
+       case ACTION_CHANGE:
+               s = getenv("CK_SEAT_OLD_SESSION_USER_UID");
+               if (s == NULL)
+                       return -1;
+               u = strtoul(s, NULL, 10);
+               if (u == 0)
+                       return 0;
+               s = getenv("CK_SEAT_SESSION_USER_UID");
+               if (s == NULL)
+                       return -1;
+               u2 = strtoul(s, NULL, 10);
+               if (u2 == 0)
+                       return 0;
+
+               s = getenv("CK_SEAT_OLD_SESSION_IS_LOCAL");
+               s2 = getenv("CK_SEAT_SESSION_IS_LOCAL");
+               if (s == NULL || s2 == NULL)
+                       return -1;
+               /* don't process non-local session changes */
+               if (strcmp(s, "true") != 0 && strcmp(s2, "true") != 0)
+                       return 0;
+
+               if (strcmp(s, "true") == 0 && strcmp(s, "true") == 0) {
+                       /* process the change */
+                       if (u == u2) {
+                               /* special case: we noop if we are
+                                * changing between local sessions for
+                                * the same uid */
+                               a = ACTION_NONE;
+                       }
+                       old_session = getenv("CK_SEAT_OLD_SESSION_ID");
+                       if (old_session == NULL)
+                               return -1;
+               } else if (strcmp(s, "true") == 0) {
+                       /* only process the removal */
+                       a = ACTION_REMOVE;
+                       old_session = getenv("CK_SEAT_OLD_SESSION_ID");
+                       if (old_session == NULL)
+                               return -1;
+               } else if (strcmp(s2, "true") == 0) {
+                       /* only process the addition */
+                       a = ACTION_ADD;
+                       u = u2;
+               }
 
-       s = getenv("CK_SESSION_USER_UID");
-       if (s == NULL)
-               return -1;
-       u = strtoul(s, NULL, 10);
-       if (u == 0)
-               return 0;
+               break;
+       case ACTION_NONE:
+               break;
+       default:
+               g_assert_not_reached ();
+               break;
+       }
 
-       *own_session = session;
+       *remove_session_id = old_session;
        *uid = u;
-       *add = a;
+       *uid2 = u2;
+       *action = a;
        return 0;
 }
 
@@ -223,6 +309,21 @@ static void apply_acl_to_devices(uid_t uid, int add)
        udev_unref(udev);
 }
 
+static void
+remove_uid (uid_t uid, const char *remove_session_id)
+{
+       /*
+        * Remove ACL for given uid from all matching devices
+        * when there is currently no local active session.
+        */
+       GSList *list;
+
+       list = uids_with_local_active_session(remove_session_id);
+       if (!uid_in_list(list, uid))
+               apply_acl_to_devices(uid, 0);
+       g_slist_free(list);
+}
+
 int main (int argc, char* argv[])
 {
        static const struct option options[] = {
@@ -233,10 +334,11 @@ int main (int argc, char* argv[])
                { "help", no_argument, NULL, 'h' },
                {}
        };
-       int add = -1;
+       int action = -1;
        const char *device = NULL;
        uid_t uid = 0;
-       const char* own_session = NULL;
+       uid_t uid2 = 0;
+       const char* remove_session_id = NULL;
        int rc = 0;
 
        /* valgrind is more important to us than a slice allocator */
@@ -252,9 +354,9 @@ int main (int argc, char* argv[])
                switch (option) {
                case 'a':
                        if (strcmp(optarg, "add") == 0 || strcmp(optarg, "change") == 0)
-                               add = 1;
+                               action = ACTION_ADD;
                        else if (strcmp(optarg, "remove") == 0)
-                               add = 0;
+                               action = ACTION_REMOVE;
                        else
                                goto out;
                        break;
@@ -274,10 +376,10 @@ int main (int argc, char* argv[])
                }
        }
 
-       if (add < 0 && device == NULL && uid == 0)
-               consolekit_called(argv[optind], &uid, &own_session, &add);
+       if (action < 0 && device == NULL && uid == 0)
+               consolekit_called(argv[optind], &uid, &uid2, &remove_session_id, &action);
 
-       if (add < 0) {
+       if (action < 0) {
                fprintf(stderr, "missing action\n\n");
                rc = 2;
                goto out;
@@ -290,20 +392,24 @@ int main (int argc, char* argv[])
        }
 
        if (uid != 0) {
-               if (add) {
+               switch (action) {
+               case ACTION_ADD:
                        /* Add ACL for given uid to all matching devices. */
                        apply_acl_to_devices(uid, 1);
-               } else {
-                       /*
-                        * Remove ACL for given uid from all matching devices
-                        * when there is currently no local active session.
-                        */
-                       GSList *list;
-
-                       list = uids_with_local_active_session(own_session);
-                       if (!uid_in_list(list, uid))
-                               apply_acl_to_devices(uid, 0);
-                       g_slist_free(list);
+                       break;
+               case ACTION_REMOVE:
+                       remove_uid(uid, remove_session_id);
+                       break;
+               case ACTION_CHANGE:
+                       remove_uid(uid, remove_session_id);
+                       apply_acl_to_devices(uid2, 1);
+                       break;
+               case ACTION_NONE:
+                       goto out;
+                       break;
+               default:
+                       g_assert_not_reached();
+                       break;
                }
        } else if (device != NULL) {
                /*
@@ -321,8 +427,8 @@ int main (int argc, char* argv[])
                        uid_t u;
 
                        u = GPOINTER_TO_UINT(l->data);
-                       if (add || !uid_in_list(list, u))
-                               set_facl(device, u, add);
+                       if (action == ACTION_ADD || !uid_in_list(list, u))
+                               set_facl(device, u, action == ACTION_ADD);
                }
                g_slist_free(list);
        } else {