/* * 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); }