machined: open up most of machined's commands to unprivileged clients via PolicyKit

1 files changed, 53 insertions, 5 deletions

diff --git a/src/machine/machine-dbus.c b/src/machine/machine-dbus.c
index 216c9c1d0d..405c072b90 100644
--- a/src/machine/machine-dbus.c
+++ b/src/machine/machine-dbus.c
@@ -128,6 +128,18 @@ int bus_machine_method_terminate(sd_bus *bus, sd_bus_message *message, void *use
         assert(message);
         assert(m);
 
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_KILL,
+                        "org.freedesktop.machine1.manage-machines",
+                        false,
+                        &m->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
         r = machine_stop(m);
         if (r < 0)
                 return r;
@@ -161,6 +173,18 @@ int bus_machine_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata
         if (signo <= 0 || signo >= _NSIG)
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
 
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_KILL,
+                        "org.freedesktop.machine1.manage-machines",
+                        false,
+                        &m->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
         r = machine_kill(m, who, signo);
         if (r < 0)
                 return r;
@@ -554,6 +578,18 @@ int bus_machine_method_bind_mount(sd_bus *bus, sd_bus_message *message, void *us
         else if (!path_is_absolute(dest) || !path_is_safe(dest))
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute and not contain ../.");
 
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.machine1.manage-machines",
+                        false,
+                        &m->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
         /* One day, when bind mounting /proc/self/fd/n works across
          * namespace boundaries we should rework this logic to make
          * use of it... */
@@ -800,6 +836,18 @@ int bus_machine_method_copy(sd_bus *bus, sd_bus_message *message, void *userdata
         else if (!path_is_absolute(dest) || !path_is_safe(dest))
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Destination path must be absolute and not contain ../.");
 
+        r = bus_verify_polkit_async(
+                        message,
+                        CAP_SYS_ADMIN,
+                        "org.freedesktop.machine1.manage-machines",
+                        false,
+                        &m->manager->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1; /* Will call us back */
+
         copy_from = strstr(sd_bus_message_get_member(message), "CopyFrom");
 
         if (copy_from) {
@@ -916,15 +964,15 @@ const sd_bus_vtable machine_vtable[] = {
         SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
         SD_BUS_PROPERTY("NetworkInterfaces", "ai", property_get_netif, 0, SD_BUS_VTABLE_PROPERTY_CONST),
         SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
-        SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
-        SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
+        SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("GetAddresses", NULL, "a(iay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_machine_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("OpenPTY", NULL, "hs", bus_machine_method_open_pty, 0),
         SD_BUS_METHOD("OpenLogin", NULL, "hs", bus_machine_method_open_login, SD_BUS_VTABLE_UNPRIVILEGED),
-        SD_BUS_METHOD("BindMount", "ssbb", NULL, bus_machine_method_bind_mount, 0),
-        SD_BUS_METHOD("CopyFrom", "ss", NULL, bus_machine_method_copy, 0),
-        SD_BUS_METHOD("CopyTo", "ss", NULL, bus_machine_method_copy, 0),
+        SD_BUS_METHOD("BindMount", "ssbb", NULL, bus_machine_method_bind_mount, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("CopyFrom", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("CopyTo", "ss", NULL, bus_machine_method_copy, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_VTABLE_END
 };