/*
* Callback function for when a channel receives data from the ipc socket.
* Emits the corresponding signal with the reply.
*/
static gboolean ipc_on_data(GIOChannel *channel, GIOCondition condition, i3ipcConnection *conn) {
if (condition != G_IO_IN)
return TRUE;
GIOStatus status;
uint32_t reply_length;
uint32_t reply_type;
gchar *reply;
GError *err = NULL;
JsonParser *parser;
JsonObject *json_reply;
status = ipc_recv_message(channel, &reply_type, &reply_length, &reply, &err);
if (status == G_IO_STATUS_EOF) {
g_signal_emit(conn, connection_signals[IPC_SHUTDOWN], 0);
if (conn->priv->main_loop != NULL)
i3ipc_connection_main_quit(conn);
return FALSE;
}
if (err) {
g_warning("could not get event reply\n");
g_error_free(err);
g_free(reply);
return TRUE;
}
reply[reply_length] = '\0';
parser = json_parser_new();
json_parser_load_from_data(parser, reply, -1, &err);
if (err) {
g_warning("could not parse event reply json (%s)\n", err->message);
g_error_free(err);
g_free(reply);
g_object_unref(parser);
return TRUE;
}
json_reply = json_node_get_object(json_parser_get_root(parser));
switch (1 << (reply_type & 0x7F))
{
case I3IPC_EVENT_WORKSPACE:
{
i3ipcWorkspaceEvent *e = g_slice_new0(i3ipcWorkspaceEvent);
e->change = g_strdup(json_object_get_string_member(json_reply, "change"));
if (json_object_has_member(json_reply, "current") && !json_object_get_null_member(json_reply, "current"))
e->current = i3ipc_con_new(NULL, json_object_get_object_member(json_reply, "current"), conn);
if (json_object_has_member(json_reply, "old") && !json_object_get_null_member(json_reply, "old"))
e->old = i3ipc_con_new(NULL, json_object_get_object_member(json_reply, "old"), conn);
g_signal_emit(conn, connection_signals[WORKSPACE], g_quark_from_string(e->change), e);
break;
}
case I3IPC_EVENT_OUTPUT:
{
i3ipcGenericEvent *e = g_slice_new0(i3ipcGenericEvent);
e->change = g_strdup(json_object_get_string_member(json_reply, "change"));
g_signal_emit(conn, connection_signals[OUTPUT], g_quark_from_string(e->change), e);
break;
}
case I3IPC_EVENT_MODE:
{
i3ipcGenericEvent *e = g_slice_new0(i3ipcGenericEvent);
e->change = g_strdup(json_object_get_string_member(json_reply, "change"));
g_signal_emit(conn, connection_signals[MODE], g_quark_from_string(e->change), e);
break;
}
case I3IPC_EVENT_WINDOW:
{
i3ipcWindowEvent *e = g_slice_new0(i3ipcWindowEvent);
e->change = g_strdup(json_object_get_string_member(json_reply, "change"));
if (json_object_has_member(json_reply, "container") && !json_object_get_null_member(json_reply, "container"))
e->container = i3ipc_con_new(NULL, json_object_get_object_member(json_reply, "container"), conn);
g_signal_emit(conn, connection_signals[WINDOW], g_quark_from_string(e->change), e);
break;
}
case I3IPC_EVENT_BARCONFIG_UPDATE:
{
i3ipcBarconfigUpdateEvent *e = g_slice_new0(i3ipcBarconfigUpdateEvent);
e->id = g_strdup(json_object_get_string_member(json_reply, "id"));
e->hidden_state = g_strdup(json_object_get_string_member(json_reply, "hidden_state"));
e->mode = g_strdup(json_object_get_string_member(json_reply, "mode"));
g_signal_emit(conn, connection_signals[BARCONFIG_UPDATE], 0, e);
break;
}
case I3IPC_EVENT_BINDING:
{
i3ipcBindingEvent *e = g_slice_new0(i3ipcBindingEvent);
e->change = g_strdup(json_object_get_string_member(json_reply, "change"));
JsonObject *json_binding_info = json_object_get_object_member(json_reply, "binding");
e->binding = g_slice_new0(i3ipcBindingInfo);
e->binding->command = g_strdup(json_object_get_string_member(json_binding_info, "command"));
e->binding->input_code = json_object_get_int_member(json_binding_info, "input_code");
e->binding->input_type = g_strdup(json_object_get_string_member(json_binding_info, "input_type"));
e->binding->symbol = g_strdup(json_object_get_string_member(json_binding_info, "symbol"));
JsonArray *mods = json_object_get_array_member(json_binding_info, "mods");
gint mods_len = json_array_get_length(mods);
for (int i = 0; i < mods_len; i += 1) {
e->binding->mods = g_slist_append(e->binding->mods, g_strdup(json_array_get_string_element(mods, i)));
}
g_signal_emit(conn, connection_signals[BINDING], g_quark_from_string(e->change), e);
break;
}
default:
g_warning("got unknown event\n");
break;
}
g_object_unref(parser);
g_free(reply);
return TRUE;
}
int main(int argc, char *argv[]) {
char *env_socket_path = getenv("I3SOCK");
if (env_socket_path)
socket_path = sstrdup(env_socket_path);
else
socket_path = NULL;
int o, option_index = 0;
uint32_t message_type = I3_IPC_MESSAGE_TYPE_COMMAND;
char *payload = NULL;
bool quiet = false;
static struct option long_options[] = {
{"socket", required_argument, 0, 's'},
{"type", required_argument, 0, 't'},
{"version", no_argument, 0, 'v'},
{"quiet", no_argument, 0, 'q'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}};
char *options_string = "s:t:vhq";
while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
if (o == 's') {
if (socket_path != NULL)
free(socket_path);
socket_path = sstrdup(optarg);
} else if (o == 't') {
if (strcasecmp(optarg, "command") == 0)
message_type = I3_IPC_MESSAGE_TYPE_COMMAND;
else if (strcasecmp(optarg, "get_workspaces") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_WORKSPACES;
else if (strcasecmp(optarg, "get_outputs") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_OUTPUTS;
else if (strcasecmp(optarg, "get_tree") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_TREE;
else if (strcasecmp(optarg, "get_marks") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_MARKS;
else if (strcasecmp(optarg, "get_bar_config") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG;
else if (strcasecmp(optarg, "get_version") == 0)
message_type = I3_IPC_MESSAGE_TYPE_GET_VERSION;
else {
printf("Unknown message type\n");
printf("Known types: command, get_workspaces, get_outputs, get_tree, get_marks, get_bar_config, get_version\n");
exit(EXIT_FAILURE);
}
} else if (o == 'q') {
quiet = true;
} else if (o == 'v') {
printf("i3-msg " I3_VERSION "\n");
return 0;
} else if (o == 'h') {
printf("i3-msg " I3_VERSION "\n");
printf("i3-msg [-s <socket>] [-t <type>] <message>\n");
return 0;
}
}
if (socket_path == NULL)
socket_path = root_atom_contents("I3_SOCKET_PATH", NULL, 0);
/* Fall back to the default socket path */
if (socket_path == NULL)
socket_path = sstrdup("/tmp/i3-ipc.sock");
/* Use all arguments, separated by whitespace, as payload.
* This way, you don’t have to do i3-msg 'mark foo', you can use
* i3-msg mark foo */
while (optind < argc) {
if (!payload) {
payload = sstrdup(argv[optind]);
} else {
char *both;
sasprintf(&both, "%s %s", payload, argv[optind]);
free(payload);
payload = both;
}
optind++;
}
if (!payload)
payload = "";
int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd == -1)
err(EXIT_FAILURE, "Could not create socket");
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_LOCAL;
strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
if (connect(sockfd, (const struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0)
err(EXIT_FAILURE, "Could not connect to i3 on socket \"%s\"", socket_path);
if (ipc_send_message(sockfd, strlen(payload), message_type, (uint8_t *)payload) == -1)
err(EXIT_FAILURE, "IPC: write()");
if (quiet)
return 0;
uint32_t reply_length;
uint32_t reply_type;
uint8_t *reply;
int ret;
if ((ret = ipc_recv_message(sockfd, &reply_type, &reply_length, &reply)) != 0) {
if (ret == -1)
err(EXIT_FAILURE, "IPC: read()");
exit(1);
}
if (reply_type != message_type)
errx(EXIT_FAILURE, "IPC: Received reply of type %d but expected %d", reply_type, message_type);
/* For the reply of commands, have a look if that command was successful.
* If not, nicely format the error message. */
if (reply_type == I3_IPC_MESSAGE_TYPE_COMMAND) {
yajl_handle handle;
handle = yajl_alloc(&reply_callbacks, NULL, NULL);
yajl_status state = yajl_parse(handle, (const unsigned char *)reply, reply_length);
switch (state) {
case yajl_status_ok:
break;
case yajl_status_client_canceled:
case yajl_status_error:
errx(EXIT_FAILURE, "IPC: Could not parse JSON reply.");
}
/* NB: We still fall-through and print the reply, because even if one
* command failed, that doesn’t mean that all commands failed. */
}
printf("%.*s\n", reply_length, reply);
free(reply);
close(sockfd);
return 0;
}
/*
* Connects to i3 to find out the currently running version. Useful since it
* might be different from the version compiled into this binary (maybe the
* user didn’t correctly install i3 or forgot te restart it).
*
* The output looks like this:
* Running i3 version: 4.2-202-gb8e782c (2012-08-12, branch "next") (pid 14804)
*
* The i3 binary you just called: /home/michael/i3/i3
* The i3 binary you are running: /home/michael/i3/i3
*
*/
void display_running_version(void) {
char *socket_path = root_atom_contents("I3_SOCKET_PATH", conn, conn_screen);
if (socket_path == NULL)
exit(EXIT_SUCCESS);
char *pid_from_atom = root_atom_contents("I3_PID", conn, conn_screen);
if (pid_from_atom == NULL) {
/* If I3_PID is not set, the running version is older than 4.2-200. */
printf("\nRunning version: < 4.2-200\n");
exit(EXIT_SUCCESS);
}
/* Inform the user of what we are doing. While a single IPC request is
* really fast normally, in case i3 hangs, this will not terminate. */
printf("(Getting version from running i3, press ctrl-c to abort…)");
fflush(stdout);
/* TODO: refactor this with the code for sending commands */
int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd == -1)
err(EXIT_FAILURE, "Could not create socket");
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_LOCAL;
strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
if (connect(sockfd, (const struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0)
err(EXIT_FAILURE, "Could not connect to i3");
if (ipc_send_message(sockfd, 0, I3_IPC_MESSAGE_TYPE_GET_VERSION,
(uint8_t *)"") == -1)
err(EXIT_FAILURE, "IPC: write()");
uint32_t reply_length;
uint32_t reply_type;
uint8_t *reply;
int ret;
if ((ret = ipc_recv_message(sockfd, &reply_type, &reply_length, &reply)) != 0) {
if (ret == -1)
err(EXIT_FAILURE, "IPC: read()");
exit(EXIT_FAILURE);
}
if (reply_type != I3_IPC_MESSAGE_TYPE_GET_VERSION)
errx(EXIT_FAILURE, "Got reply type %d, but expected %d (GET_VERSION)", reply_type, I3_IPC_MESSAGE_TYPE_GET_VERSION);
yajl_handle handle = yajl_alloc(&version_callbacks, NULL, NULL);
yajl_status state = yajl_parse(handle, (const unsigned char *)reply, (int)reply_length);
if (state != yajl_status_ok)
errx(EXIT_FAILURE, "Could not parse my own reply. That's weird. reply is %.*s", (int)reply_length, reply);
printf("\rRunning i3 version: %s (pid %s)\n", human_readable_version, pid_from_atom);
if (loaded_config_file_name) {
struct stat sb;
time_t now;
char mtime[64];
printf("Loaded i3 config: %s", loaded_config_file_name);
if (stat(loaded_config_file_name, &sb) == -1) {
printf("\n");
ELOG("Cannot stat config file \"%s\"\n", loaded_config_file_name);
} else {
strftime(mtime, sizeof(mtime), "%c", localtime(&(sb.st_mtime)));
time(&now);
printf(" (Last modified: %s, %.f seconds ago)\n", mtime, difftime(now, sb.st_mtime));
}
}
#ifdef __linux__
size_t destpath_size = 1024;
ssize_t linksize;
char *exepath;
char *destpath = smalloc(destpath_size);
sasprintf(&exepath, "/proc/%d/exe", getpid());
while ((linksize = readlink(exepath, destpath, destpath_size)) == (ssize_t)destpath_size) {
destpath_size = destpath_size * 2;
destpath = srealloc(destpath, destpath_size);
}
if (linksize == -1)
err(EXIT_FAILURE, "readlink(%s)", exepath);
/* readlink() does not NULL-terminate strings, so we have to. */
destpath[linksize] = '\0';
printf("\n");
printf("The i3 binary you just called: %s\n", destpath);
free(exepath);
sasprintf(&exepath, "/proc/%s/exe", pid_from_atom);
while ((linksize = readlink(exepath, destpath, destpath_size)) == (ssize_t)destpath_size) {
destpath_size = destpath_size * 2;
destpath = srealloc(destpath, destpath_size);
}
if (linksize == -1)
err(EXIT_FAILURE, "readlink(%s)", exepath);
/* readlink() does not NULL-terminate strings, so we have to. */
destpath[linksize] = '\0';
/* Check if "(deleted)" is the readlink result. If so, the running version
* does not match the file on disk. */
if (strstr(destpath, "(deleted)") != NULL)
printf("RUNNING BINARY DIFFERENT FROM BINARY ON DISK!\n");
/* Since readlink() might put a "(deleted)" somewhere in the buffer and
* stripping that out seems hackish and ugly, we read the process’s argv[0]
* instead. */
free(exepath);
sasprintf(&exepath, "/proc/%s/cmdline", pid_from_atom);
int fd;
if ((fd = open(exepath, O_RDONLY)) == -1)
err(EXIT_FAILURE, "open(%s)", exepath);
if (read(fd, destpath, sizeof(destpath)) == -1)
err(EXIT_FAILURE, "read(%s)", exepath);
close(fd);
printf("The i3 binary you are running: %s\n", destpath);
free(exepath);
free(destpath);
#endif
yajl_free(handle);
}
