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Add del_snap command to example C client

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This commit is contained in:
David Disseldorp
2012-10-12 13:13:36 +02:00
parent 872e94f71a
commit 4da918e380
1 changed files with 134 additions and 3 deletions
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137
examples/C/snapper_dbus_cli.c
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@@ -30,6 +30,7 @@
#define CDBUS_SIG_LIST_SNAPS_RSP "a(uqutussa{ss})"
#define CDBUS_SIG_LIST_CONFS_RSP "a(ssa{ss})"
#define CDBUS_SIG_CREATE_SNAP_RSP "u"
#define CDBUS_SIG_DEL_SNAPS_RSP ""
#define CDBUS_SIG_STRING_DICT "{ss}"
struct dict {
@@ -892,13 +893,137 @@ static int cdbus_create_snap_call(DBusConnection *conn)
return 0;
}
static int cdbus_del_snap_pack(char *snapper_conf,
uint32_t snap_id,
DBusMessage **req_msg_out)
{
DBusMessage *msg;
DBusMessageIter args;
DBusMessageIter array_iter;
bool ret;
msg = dbus_message_new_method_call("org.opensuse.Snapper",
"/org/opensuse/Snapper",
"org.opensuse.Snapper",
"DeleteSnapshots");
if (msg == NULL) {
fprintf(stderr, "failed to create req msg\n");
return -ENOMEM;
}
/* append arguments */
dbus_message_iter_init_append(msg, &args);
if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING,
&snapper_conf)) {
fprintf(stderr, "Out Of Memory!\n");
return -ENOMEM;
}
ret = dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY,
DBUS_TYPE_UINT32_AS_STRING,
&array_iter);
if (!ret) {
fprintf(stderr, "failed to open array container\n");
return -ENOMEM;
}
if (!dbus_message_iter_append_basic(&array_iter,
DBUS_TYPE_UINT32,
&snap_id)) {
fprintf(stderr, "Out Of Memory!\n");
return -ENOMEM;
}
dbus_message_iter_close_container(&args, &array_iter);
*req_msg_out = msg;
return 0;
}
static int cdbus_del_snap_unpack(DBusConnection *conn,
DBusMessage *rsp_msg)
{
DBusMessageIter iter;
int msg_type;
const char *sig;
msg_type = dbus_message_get_type(rsp_msg);
if (msg_type == DBUS_MESSAGE_TYPE_ERROR) {
fprintf(stderr, "del snap error response: %s\n",
dbus_message_get_error_name(rsp_msg));
return -EINVAL;
}
if (msg_type != DBUS_MESSAGE_TYPE_METHOD_RETURN) {
fprintf(stderr, "unexpected del snap ret type: %d\n",
msg_type);
return -EINVAL;
}
sig = dbus_message_get_signature(rsp_msg);
if ((sig == NULL)
|| (strcmp(sig, CDBUS_SIG_DEL_SNAPS_RSP) != 0)) {
fprintf(stderr, "bad del snap response sig: %s, "
"expected: %s\n",
(sig ? sig : "NULL"), CDBUS_SIG_DEL_SNAPS_RSP);
return -EINVAL;
}
/* no parameters in response */
return 0;
}
static int cdbus_del_snap_call(DBusConnection *conn,
uint32_t snap_id)
{
int ret;
DBusMessage *req_msg;
DBusMessage *rsp_msg;
DBusPendingCall *pending;
ret = cdbus_del_snap_pack("root", snap_id, &req_msg);
if (ret < 0) {
fprintf(stderr, "failed to pack del snap request\n");
return ret;
}
ret = cdbus_msg_send(conn, req_msg, &pending);
if (ret < 0) {
dbus_message_unref(req_msg);
return ret;
}
ret = cdbus_msg_recv(conn, pending, &rsp_msg);
if (ret < 0) {
dbus_message_unref(req_msg);
dbus_pending_call_unref(pending);
return ret;
}
ret = cdbus_del_snap_unpack(conn, rsp_msg);
if (ret < 0) {
fprintf(stderr, "failed to unpack del snap response\n");
dbus_message_unref(req_msg);
dbus_message_unref(rsp_msg);
return ret;
}
printf("deleted snapshot %u\n", snap_id);
dbus_message_unref(req_msg);
dbus_message_unref(rsp_msg);
return 0;
}
int main(int argc, char **argv)
{
DBusConnection *conn;
int ret = -EINVAL;
if (argc != 2) {
fprintf(stderr, "Syntax: %s <list_confs | list_snaps | create_snap>\n",
if (argc < 2) {
fprintf(stderr, "Syntax: %s <list_confs | list_snaps | create_snap | del_snap> <arg>\n",
argv[0]);
return -EINVAL;
}
@@ -915,8 +1040,14 @@ int main(int argc, char **argv)
ret = cdbus_list_snaps_call(conn);
} else if (!strcmp(argv[1], "create_snap")) {
ret = cdbus_create_snap_call(conn);
} else if (!strcmp(argv[1], "del_snap")) {
if (argc < 3) {
fprintf(stderr, "del_snap requires a snapshot_id argument\n");
return -EINVAL;
}
ret = cdbus_del_snap_call(conn, atoi(argv[2]));
} else {
fprintf(stderr, "Syntax: %s <list_confs | list_snaps | create_snap>\n",
fprintf(stderr, "Syntax: %s <list_confs | list_snaps | create_snap> | del_snap> <arg>\n",
argv[0]);
ret = -EINVAL;
goto err_conn_close;