shared: split out polkit stuff from bus-util.c → bus-polkit.c

It's enough, complex stuff to warrant its own source file.

No other changes, just splitting out.

1 files changed, 1 insertions, 356 deletions

diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index 10c05eba18..15bc0ed71b 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -9,7 +9,6 @@
 #include <sys/socket.h>
 #include <unistd.h>
 
-#include "sd-bus-protocol.h"
 #include "sd-bus.h"
 #include "sd-daemon.h"
 #include "sd-event.h"
@@ -22,15 +21,12 @@
 #include "bus-util.h"
 #include "cap-list.h"
 #include "cgroup-util.h"
-#include "def.h"
-#include "escape.h"
-#include "fd-util.h"
 #include "mountpoint-util.h"
 #include "nsflags.h"
 #include "parse-util.h"
 #include "path-util.h"
-#include "proc-cmdline.h"
 #include "rlimit-util.h"
+#include "socket-util.h"
 #include "stdio-util.h"
 #include "strv.h"
 #include "user-util.h"
@@ -185,357 +181,6 @@ int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) {
         return has_owner;
 }
 
-static int check_good_user(sd_bus_message *m, uid_t good_user) {
-        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
-        uid_t sender_uid;
-        int r;
-
-        assert(m);
-
-        if (good_user == UID_INVALID)
-                return 0;
-
-        r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds);
-        if (r < 0)
-                return r;
-
-        /* Don't trust augmented credentials for authorization */
-        assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM);
-
-        r = sd_bus_creds_get_euid(creds, &sender_uid);
-        if (r < 0)
-                return r;
-
-        return sender_uid == good_user;
-}
-
-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;
-#if 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;
-                }
-        }
-#endif
-
-        return -EACCES;
-}
-
-#if ENABLE_POLKIT
-
-typedef struct AsyncPolkitQuery {
-        sd_bus_message *request, *reply;
-        sd_bus_message_handler_t callback;
-        void *userdata;
-        sd_bus_slot *slot;
-        Hashmap *registry;
-} AsyncPolkitQuery;
-
-static void async_polkit_query_free(AsyncPolkitQuery *q) {
-
-        if (!q)
-                return;
-
-        sd_bus_slot_unref(q->slot);
-
-        if (q->registry && q->request)
-                hashmap_remove(q->registry, q->request);
-
-        sd_bus_message_unref(q->request);
-        sd_bus_message_unref(q->reply);
-
-        free(q);
-}
-
-static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) {
-        _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
-        AsyncPolkitQuery *q = userdata;
-        int r;
-
-        assert(reply);
-        assert(q);
-
-        q->slot = sd_bus_slot_unref(q->slot);
-        q->reply = sd_bus_message_ref(reply);
-
-        r = sd_bus_message_rewind(q->request, true);
-        if (r < 0) {
-                r = sd_bus_reply_method_errno(q->request, r, NULL);
-                goto finish;
-        }
-
-        r = q->callback(q->request, q->userdata, &error_buffer);
-        r = bus_maybe_reply_error(q->request, r, &error_buffer);
-
-finish:
-        async_polkit_query_free(q);
-
-        return r;
-}
-
-#endif
-
-int bus_verify_polkit_async(
-                sd_bus_message *call,
-                int capability,
-                const char *action,
-                const char **details,
-                bool interactive,
-                uid_t good_user,
-                Hashmap **registry,
-                sd_bus_error *error) {
-
-#if ENABLE_POLKIT
-        _cleanup_(sd_bus_message_unrefp) sd_bus_message *pk = NULL;
-        AsyncPolkitQuery *q;
-        const char *sender, **k, **v;
-        sd_bus_message_handler_t callback;
-        void *userdata;
-        int c;
-#endif
-        int r;
-
-        assert(call);
-        assert(action);
-        assert(registry);
-
-        r = check_good_user(call, good_user);
-        if (r != 0)
-                return r;
-
-#if 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;
-
-                        e = sd_bus_message_get_error(q->reply);
-
-                        /* Treat no PK available as access denied */
-                        if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN) ||
-                            sd_bus_error_has_name(e, SD_BUS_ERROR_NAME_HAS_NO_OWNER))
-                                return -EACCES;
-
-                        /* Copy error from polkit reply */
-                        sd_bus_error_copy(error, e);
-                        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;
-
-                if (challenge)
-                        return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required.");
-
-                return -EACCES;
-        }
-#endif
-
-        r = sd_bus_query_sender_privilege(call, capability);
-        if (r < 0)
-                return r;
-        else if (r > 0)
-                return 1;
-
-#if 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;
-
-        c = sd_bus_message_get_allow_interactive_authorization(call);
-        if (c < 0)
-                return c;
-        if (c > 0)
-                interactive = true;
-
-        r = hashmap_ensure_allocated(registry, NULL);
-        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})s",
-                        "system-bus-name", 1, "name", "s", sender,
-                        action);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_open_container(pk, 'a', "{ss}");
-        if (r < 0)
-                return r;
-
-        STRV_FOREACH_PAIR(k, v, details) {
-                r = sd_bus_message_append(pk, "{ss}", *k, *v);
-                if (r < 0)
-                        return r;
-        }
-
-        r = sd_bus_message_close_container(pk);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_append(pk, "us", interactive, 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;
-}
-
-void bus_verify_polkit_async_registry_free(Hashmap *registry) {
-#if ENABLE_POLKIT
-        hashmap_free_with_destructor(registry, async_polkit_query_free);
-#endif
-}
-
 int bus_check_peercred(sd_bus *c) {
         struct ucred ucred;
         int fd, r;