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lib: extract dbus messaging code

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Separate the D-Bus messaging code from gamemode_request().
This commit is contained in:
Christian Kellner 2019-09-27 17:51:11 +02:00
parent f6220a2d6e
commit b513bc65ae
1 changed files with 66 additions and 34 deletions
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100
lib/client_impl.c
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@ -151,31 +151,17 @@ static void cleanup_pending_call(DBusPendingCall **call)
}
/* internal API */
static int gamemode_request(const char *method, pid_t for_pid)
static int make_request(DBusConnection *bus,
int native, const char *method,
pid_t *pids, int npids,
DBusError *error)
{
_cleanup_bus_ DBusConnection *bus = NULL;
_cleanup_msg_ DBusMessage *msg = NULL;
_cleanup_dpc_ DBusPendingCall *call = NULL;
DBusMessageIter iter;
DBusError err;
dbus_int32_t pid;
int native;
DBusMessageIter iter;
int res = -1;
native = !in_flatpak();
pid = (dbus_int32_t)getpid();
TRACE("GM: [%d] request '%s' received (for pid: %d) [portal: %s]\n",
(int)pid,
method,
(int)for_pid,
(native ? "n" : "y"));
bus = hop_on_the_bus();
if (bus == NULL)
return -1;
// If we are inside a flatpak we need to talk to the portal instead
const char *dest = native ? DAEMON_DBUS_NAME : PORTAL_DBUS_NAME;
const char *path = native ? DAEMON_DBUS_PATH : PORTAL_DBUS_PATH;
@ -183,14 +169,15 @@ static int gamemode_request(const char *method, pid_t for_pid)
msg = dbus_message_new_method_call(dest, path, iface, method);
if (!msg)
return log_error("Could not create dbus message");
if (!msg) {
dbus_set_error_const(error, DBUS_ERROR_FAILED,
"Could not create dbus message");
return -1;
}
dbus_message_iter_init_append(msg, &iter);
dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &pid);
if (for_pid != 0) {
dbus_int32_t p = (dbus_int32_t)for_pid;
for (int i = 0; i < npids; i++) {
dbus_int32_t p = (dbus_int32_t)pids[i];
dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &p);
}
@ -202,20 +189,65 @@ static int gamemode_request(const char *method, pid_t for_pid)
dbus_pending_call_block(call);
msg = dbus_pending_call_steal_reply(call);
if (msg == NULL)
return log_error("Did not receive a reply");
if (msg == NULL) {
dbus_set_error_const(error, DBUS_ERROR_FAILED,
"Did not receive a reply");
return -1;
}
dbus_error_init(&err);
if (dbus_set_error_from_message(&err, msg))
log_error("Could not call method '%s' on '%s': %s", method, dest, err.message);
else if (!dbus_message_iter_init(msg, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_INT32)
log_error("Failed to parse response");
else
if (dbus_set_error_from_message(&err, msg)) {
dbus_set_error(error, err.name,
"Could not call method '%s' on '%s': %s",
method, dest, err.message);
} else if (!dbus_message_iter_init(msg, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_INT32) {
dbus_set_error(error, DBUS_ERROR_INVALID_SIGNATURE,
"Failed to parse response");
} else {
dbus_message_iter_get_basic(&iter, &res);
}
TRACE("GM: [%d] request '%s' done: %d\n", (int)pid, method, res);
/* free the local error */
if (dbus_error_is_set(&err))
dbus_error_free(&err);
return res;
}
static int gamemode_request(const char *method, pid_t for_pid)
{
_cleanup_bus_ DBusConnection *bus = NULL;
DBusError err;
pid_t pids[2] = {0, for_pid};
int npids;
int native;
int res = -1;
native = !in_flatpak();
pids[0] = getpid();
TRACE("GM: [%d] request '%s' received (for pid: %d) [portal: %s]\n",
(int)pids[0],
method,
(int)pids[1],
(native ? "n" : "y"));
bus = hop_on_the_bus();
if (bus == NULL)
return -1;
npids = for_pid > 0 ? 2 : 1;
dbus_error_init(&err);
res = make_request(bus, native, method, pids, npids, &err);
if (res == -1)
log_error("D-Bus error: %s", err.message);
TRACE("GM: [%d] request '%s' done: %d\n", (int)pids[0], method, res);
if (dbus_error_is_set(&err))
dbus_error_free(&err);