Exemplo n.º 1
0
static int verify_sys_admin_or_owner_sync(sd_bus_message *message, Job *j, sd_bus_error *error) {
        int r;

        if (sd_bus_track_contains(j->clients, sd_bus_message_get_sender(message)))
                return 0; /* One of the job owners is calling us */

        r = sd_bus_query_sender_privilege(message, CAP_SYS_ADMIN);
        if (r < 0)
                return r;
        if (r == 0)
                return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access denied to perform action");

        /* Root has called us */
        return 0;
}
Exemplo n.º 2
0
int bus_verify_polkit_async(
                sd_bus_message *call,
                int capability,
                const char *action,
                bool interactive,
                Hashmap **registry,
                sd_bus_error *error) {

#ifdef ENABLE_POLKIT
        _cleanup_bus_message_unref_ sd_bus_message *pk = NULL;
        AsyncPolkitQuery *q;
        const char *sender;
        sd_bus_message_handler_t callback;
        void *userdata;
#endif
        int r;

        assert(call);
        assert(action);
        assert(registry);

#ifdef ENABLE_POLKIT
        q = hashmap_get(*registry, call);
        if (q) {
                int authorized, challenge;

                /* This is the second invocation of this function, and
                 * there's already a response from polkit, let's
                 * process it */
                assert(q->reply);

                if (sd_bus_message_is_method_error(q->reply, NULL)) {
                        const sd_bus_error *e;

                        /* Copy error from polkit reply */
                        e = sd_bus_message_get_error(q->reply);
                        sd_bus_error_copy(error, e);

                        /* Treat no PK available as access denied */
                        if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN))
                                return -EACCES;

                        return -sd_bus_error_get_errno(e);
                }

                r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}");
                if (r >= 0)
                        r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge);

                if (r < 0)
                        return r;

                if (authorized)
                        return 1;

                return -EACCES;
        }
#endif

        r = sd_bus_query_sender_privilege(call, capability);
        if (r < 0)
                return r;
        else if (r > 0)
                return 1;

#ifdef ENABLE_POLKIT
        if (sd_bus_get_current_message(call->bus) != call)
                return -EINVAL;

        callback = sd_bus_get_current_handler(call->bus);
        if (!callback)
                return -EINVAL;

        userdata = sd_bus_get_current_userdata(call->bus);

        sender = sd_bus_message_get_sender(call);
        if (!sender)
                return -EBADMSG;

        r = hashmap_ensure_allocated(registry, trivial_hash_func, trivial_compare_func);
        if (r < 0)
                return r;

        r = sd_bus_message_new_method_call(
                        call->bus,
                        &pk,
                        "org.freedesktop.PolicyKit1",
                        "/org/freedesktop/PolicyKit1/Authority",
                        "org.freedesktop.PolicyKit1.Authority",
                        "CheckAuthorization");
        if (r < 0)
                return r;

        r = sd_bus_message_append(
                        pk,
                        "(sa{sv})sa{ss}us",
                        "system-bus-name", 1, "name", "s", sender,
                        action,
                        0,
                        interactive ? 1 : 0,
                        NULL);
        if (r < 0)
                return r;

        q = new0(AsyncPolkitQuery, 1);
        if (!q)
                return -ENOMEM;

        q->request = sd_bus_message_ref(call);
        q->callback = callback;
        q->userdata = userdata;

        r = hashmap_put(*registry, call, q);
        if (r < 0) {
                async_polkit_query_free(q);
                return r;
        }

        q->registry = *registry;

        r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0);
        if (r < 0) {
                async_polkit_query_free(q);
                return r;
        }

        return 0;
#endif

        return -EACCES;
}
Exemplo n.º 3
0
int bus_verify_polkit(
                sd_bus_message *call,
                int capability,
                const char *action,
                bool interactive,
                bool *_challenge,
                sd_bus_error *e) {

        int r;

        assert(call);
        assert(action);

        r = sd_bus_query_sender_privilege(call, capability);
        if (r < 0)
                return r;
        else if (r > 0)
                return 1;
#ifdef ENABLE_POLKIT
        else {
                _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
                int authorized = false, challenge = false;
                const char *sender;

                sender = sd_bus_message_get_sender(call);
                if (!sender)
                        return -EBADMSG;

                r = sd_bus_call_method(
                                call->bus,
                                "org.freedesktop.PolicyKit1",
                                "/org/freedesktop/PolicyKit1/Authority",
                                "org.freedesktop.PolicyKit1.Authority",
                                "CheckAuthorization",
                                e,
                                &reply,
                                "(sa{sv})sa{ss}us",
                                "system-bus-name", 1, "name", "s", sender,
                                action,
                                0,
                                interactive ? 1 : 0,
                                "");

                if (r < 0) {
                        /* Treat no PK available as access denied */
                        if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
                                sd_bus_error_free(e);
                                return -EACCES;
                        }

                        return r;
                }

                r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
                if (r < 0)
                        return r;

                r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
                if (r < 0)
                        return r;

                if (authorized)
                        return 1;

                if (_challenge) {
                        *_challenge = challenge;
                        return 0;
                }
        }
#endif

        return -EACCES;
}
Exemplo n.º 4
0
int bus_test_polkit(
                sd_bus_message *call,
                int capability,
                const char *action,
                const char **details,
                uid_t good_user,
                bool *_challenge,
                sd_bus_error *e) {

        int r;

        assert(call);
        assert(action);

        /* Tests non-interactively! */

        r = check_good_user(call, good_user);
        if (r != 0)
                return r;

        r = sd_bus_query_sender_privilege(call, capability);
        if (r < 0)
                return r;
        else if (r > 0)
                return 1;
#ifdef ENABLE_POLKIT
        else {
                _cleanup_(sd_bus_message_unrefp) sd_bus_message *request = NULL;
                _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
                int authorized = false, challenge = false;
                const char *sender, **k, **v;

                sender = sd_bus_message_get_sender(call);
                if (!sender)
                        return -EBADMSG;

                r = sd_bus_message_new_method_call(
                                call->bus,
                                &request,
                                "org.freedesktop.PolicyKit1",
                                "/org/freedesktop/PolicyKit1/Authority",
                                "org.freedesktop.PolicyKit1.Authority",
                                "CheckAuthorization");
                if (r < 0)
                        return r;

                r = sd_bus_message_append(
                                request,
                                "(sa{sv})s",
                                "system-bus-name", 1, "name", "s", sender,
                                action);
                if (r < 0)
                        return r;

                r = sd_bus_message_open_container(request, 'a', "{ss}");
                if (r < 0)
                        return r;

                STRV_FOREACH_PAIR(k, v, details) {
                        r = sd_bus_message_append(request, "{ss}", *k, *v);
                        if (r < 0)
                                return r;
                }

                r = sd_bus_message_close_container(request);
                if (r < 0)
                        return r;

                r = sd_bus_message_append(request, "us", 0, NULL);
                if (r < 0)
                        return r;

                r = sd_bus_call(call->bus, request, 0, e, &reply);
                if (r < 0) {
                        /* Treat no PK available as access denied */
                        if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
                                sd_bus_error_free(e);
                                return -EACCES;
                        }

                        return r;
                }

                r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
                if (r < 0)
                        return r;

                r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
                if (r < 0)
                        return r;

                if (authorized)
                        return 1;

                if (_challenge) {
                        *_challenge = challenge;
                        return 0;
                }
        }