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-rw-r--r--src/libcore/bus-endpoint.c135
1 files changed, 135 insertions, 0 deletions
diff --git a/src/libcore/bus-endpoint.c b/src/libcore/bus-endpoint.c
new file mode 100644
index 0000000000..d22a80c91f
--- /dev/null
+++ b/src/libcore/bus-endpoint.c
@@ -0,0 +1,135 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Daniel Mack
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+
+#include "alloc-util.h"
+#include "bus-endpoint.h"
+#include "bus-kernel.h"
+#include "bus-policy.h"
+#include "kdbus.h"
+
+int bus_kernel_set_endpoint_policy(int fd, uid_t uid, BusEndpoint *ep) {
+
+ struct kdbus_cmd *update;
+ struct kdbus_item *n;
+ BusEndpointPolicy *po;
+ Iterator i;
+ size_t size;
+ int r;
+
+ size = ALIGN8(offsetof(struct kdbus_cmd, items));
+
+ HASHMAP_FOREACH(po, ep->policy_hash, i) {
+ size += ALIGN8(offsetof(struct kdbus_item, str) + strlen(po->name) + 1);
+ size += ALIGN8(offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access));
+ }
+
+ update = alloca0_align(size, 8);
+ update->size = size;
+
+ n = update->items;
+
+ HASHMAP_FOREACH(po, ep->policy_hash, i) {
+ n->type = KDBUS_ITEM_NAME;
+ n->size = offsetof(struct kdbus_item, str) + strlen(po->name) + 1;
+ strcpy(n->str, po->name);
+ n = KDBUS_ITEM_NEXT(n);
+
+ n->type = KDBUS_ITEM_POLICY_ACCESS;
+ n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
+
+ n->policy_access.type = KDBUS_POLICY_ACCESS_USER;
+ n->policy_access.access = bus_kernel_translate_access(po->access);
+ n->policy_access.id = uid;
+
+ n = KDBUS_ITEM_NEXT(n);
+ }
+
+ r = ioctl(fd, KDBUS_CMD_ENDPOINT_UPDATE, update);
+ if (r < 0)
+ return -errno;
+
+ return 0;
+}
+
+int bus_endpoint_new(BusEndpoint **ep) {
+ assert(ep);
+
+ *ep = new0(BusEndpoint, 1);
+ if (!*ep)
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_endpoint_add_policy(BusEndpoint *ep, const char *name, BusPolicyAccess access) {
+ _cleanup_free_ BusEndpointPolicy *po = NULL;
+ _cleanup_free_ char *key = NULL;
+ int r;
+
+ assert(ep);
+ assert(name);
+ assert(access > _BUS_POLICY_ACCESS_INVALID && access < _BUS_POLICY_ACCESS_MAX);
+
+ /* check if we already have this name in the policy list. If we do, see if the new access level
+ * is higher than the exising one, and upgrade the entry in that case. Otherwise, do nothing.
+ */
+
+ if (ep->policy_hash) {
+ po = hashmap_get(ep->policy_hash, name);
+ if (po) {
+ if (po->access < access)
+ po->access = access;
+
+ return 0;
+ }
+ } else {
+ ep->policy_hash = hashmap_new(&string_hash_ops);
+ if (!ep->policy_hash)
+ return -ENOMEM;
+ }
+
+ po = new0(BusEndpointPolicy, 1);
+ if (!po)
+ return -ENOMEM;
+
+ key = strdup(name);
+ if (!key)
+ return -ENOMEM;
+
+ po->name = key;
+ po->access = access;
+
+ r = hashmap_put(ep->policy_hash, key, po);
+ if (r < 0)
+ return r;
+
+ po = NULL;
+ key = NULL;
+ return 0;
+}
+
+void bus_endpoint_free(BusEndpoint *endpoint) {
+ if (!endpoint)
+ return;
+
+ hashmap_free_free_free(endpoint->policy_hash);
+ free(endpoint);
+}