2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * i3-msg/main.c: Utility which sends messages to a running i3-instance using
8 * IPC via UNIX domain sockets.
10 * This (in combination with libi3/ipc_send_message.c and
11 * libi3/ipc_recv_message.c) serves as an example for how to send your own
14 * Additionally, it’s even useful sometimes :-).
21 #include <sys/types.h>
22 #include <sys/socket.h>
33 #include <yajl/yajl_parse.h>
34 #include <yajl/yajl_version.h>
37 #include <xcb/xcb_aux.h>
42 * Having verboselog() and errorlog() is necessary when using libi3.
45 void verboselog(char *fmt, ...) {
49 vfprintf(stdout, fmt, args);
53 void errorlog(char *fmt, ...) {
57 vfprintf(stderr, fmt, args);
61 static char *last_key = NULL;
63 typedef struct reply_t {
70 static reply_t last_reply;
72 static int reply_boolean_cb(void *params, int val) {
73 if (strcmp(last_key, "success") == 0)
74 last_reply.success = val;
78 static int reply_string_cb(void *params, const unsigned char *val, size_t len) {
79 char *str = scalloc(len + 1, 1);
80 strncpy(str, (const char *)val, len);
81 if (strcmp(last_key, "error") == 0)
82 last_reply.error = str;
83 else if (strcmp(last_key, "input") == 0)
84 last_reply.input = str;
85 else if (strcmp(last_key, "errorposition") == 0)
86 last_reply.errorposition = str;
92 static int reply_start_map_cb(void *params) {
96 static int reply_end_map_cb(void *params) {
97 if (!last_reply.success) {
98 if (last_reply.input) {
99 fprintf(stderr, "ERROR: Your command: %s\n", last_reply.input);
100 fprintf(stderr, "ERROR: %s\n", last_reply.errorposition);
102 fprintf(stderr, "ERROR: %s\n", last_reply.error);
107 static int reply_map_key_cb(void *params, const unsigned char *keyVal, size_t keyLen) {
109 last_key = scalloc(keyLen + 1, 1);
110 strncpy(last_key, (const char *)keyVal, keyLen);
114 static yajl_callbacks reply_callbacks = {
115 .yajl_boolean = reply_boolean_cb,
116 .yajl_string = reply_string_cb,
117 .yajl_start_map = reply_start_map_cb,
118 .yajl_map_key = reply_map_key_cb,
119 .yajl_end_map = reply_end_map_cb,
122 /*******************************************************************************
123 * Config reply callbacks
124 *******************************************************************************/
126 static char *config_last_key = NULL;
128 static int config_string_cb(void *params, const unsigned char *val, size_t len) {
129 char *str = scalloc(len + 1, 1);
130 strncpy(str, (const char *)val, len);
131 if (strcmp(config_last_key, "config") == 0) {
132 fprintf(stdout, "%s", str);
138 static int config_start_map_cb(void *params) {
142 static int config_end_map_cb(void *params) {
146 static int config_map_key_cb(void *params, const unsigned char *keyVal, size_t keyLen) {
147 config_last_key = scalloc(keyLen + 1, 1);
148 strncpy(config_last_key, (const char *)keyVal, keyLen);
152 static yajl_callbacks config_callbacks = {
153 .yajl_string = config_string_cb,
154 .yajl_start_map = config_start_map_cb,
155 .yajl_map_key = config_map_key_cb,
156 .yajl_end_map = config_end_map_cb,
159 int main(int argc, char *argv[]) {
160 #if defined(__OpenBSD__)
161 if (pledge("stdio rpath unix", NULL) == -1)
162 err(EXIT_FAILURE, "pledge");
164 char *socket_path = NULL;
165 int o, option_index = 0;
166 uint32_t message_type = I3_IPC_MESSAGE_TYPE_RUN_COMMAND;
167 char *payload = NULL;
169 bool monitor = false;
171 static struct option long_options[] = {
172 {"socket", required_argument, 0, 's'},
173 {"type", required_argument, 0, 't'},
174 {"version", no_argument, 0, 'v'},
175 {"quiet", no_argument, 0, 'q'},
176 {"monitor", no_argument, 0, 'm'},
177 {"help", no_argument, 0, 'h'},
180 char *options_string = "s:t:vhqm";
182 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
185 socket_path = sstrdup(optarg);
186 } else if (o == 't') {
187 if (strcasecmp(optarg, "command") == 0) {
188 message_type = I3_IPC_MESSAGE_TYPE_RUN_COMMAND;
189 } else if (strcasecmp(optarg, "run_command") == 0) {
190 message_type = I3_IPC_MESSAGE_TYPE_RUN_COMMAND;
191 } else if (strcasecmp(optarg, "get_workspaces") == 0) {
192 message_type = I3_IPC_MESSAGE_TYPE_GET_WORKSPACES;
193 } else if (strcasecmp(optarg, "get_outputs") == 0) {
194 message_type = I3_IPC_MESSAGE_TYPE_GET_OUTPUTS;
195 } else if (strcasecmp(optarg, "get_tree") == 0) {
196 message_type = I3_IPC_MESSAGE_TYPE_GET_TREE;
197 } else if (strcasecmp(optarg, "get_marks") == 0) {
198 message_type = I3_IPC_MESSAGE_TYPE_GET_MARKS;
199 } else if (strcasecmp(optarg, "get_bar_config") == 0) {
200 message_type = I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG;
201 } else if (strcasecmp(optarg, "get_binding_modes") == 0) {
202 message_type = I3_IPC_MESSAGE_TYPE_GET_BINDING_MODES;
203 } else if (strcasecmp(optarg, "get_version") == 0) {
204 message_type = I3_IPC_MESSAGE_TYPE_GET_VERSION;
205 } else if (strcasecmp(optarg, "get_config") == 0) {
206 message_type = I3_IPC_MESSAGE_TYPE_GET_CONFIG;
207 } else if (strcasecmp(optarg, "send_tick") == 0) {
208 message_type = I3_IPC_MESSAGE_TYPE_SEND_TICK;
209 } else if (strcasecmp(optarg, "subscribe") == 0) {
210 message_type = I3_IPC_MESSAGE_TYPE_SUBSCRIBE;
212 printf("Unknown message type\n");
213 printf("Known types: run_command, get_workspaces, get_outputs, get_tree, get_marks, get_bar_config, get_binding_modes, get_version, get_config, send_tick, subscribe\n");
216 } else if (o == 'q') {
218 } else if (o == 'm') {
220 } else if (o == 'v') {
221 printf("i3-msg " I3_VERSION "\n");
223 } else if (o == 'h') {
224 printf("i3-msg " I3_VERSION "\n");
225 printf("i3-msg [-s <socket>] [-t <type>] [-m] <message>\n");
227 } else if (o == '?') {
232 if (monitor && message_type != I3_IPC_MESSAGE_TYPE_SUBSCRIBE) {
233 fprintf(stderr, "The monitor option -m is used with -t SUBSCRIBE exclusively.\n");
237 /* Use all arguments, separated by whitespace, as payload.
238 * This way, you don’t have to do i3-msg 'mark foo', you can use
240 while (optind < argc) {
242 payload = sstrdup(argv[optind]);
245 sasprintf(&both, "%s %s", payload, argv[optind]);
253 payload = sstrdup("");
255 int sockfd = ipc_connect(socket_path);
256 if (ipc_send_message(sockfd, strlen(payload), message_type, (uint8_t *)payload) == -1)
257 err(EXIT_FAILURE, "IPC: write()");
260 uint32_t reply_length;
264 if ((ret = ipc_recv_message(sockfd, &reply_type, &reply_length, &reply)) != 0) {
266 err(EXIT_FAILURE, "IPC: read()");
269 if (reply_type != message_type)
270 errx(EXIT_FAILURE, "IPC: Received reply of type %d but expected %d", reply_type, message_type);
271 /* For the reply of commands, have a look if that command was successful.
272 * If not, nicely format the error message. */
273 if (reply_type == I3_IPC_REPLY_TYPE_COMMAND) {
274 yajl_handle handle = yajl_alloc(&reply_callbacks, NULL, NULL);
275 yajl_status state = yajl_parse(handle, (const unsigned char *)reply, reply_length);
281 case yajl_status_client_canceled:
282 case yajl_status_error:
283 errx(EXIT_FAILURE, "IPC: Could not parse JSON reply.");
287 printf("%.*s\n", reply_length, reply);
289 } else if (reply_type == I3_IPC_REPLY_TYPE_CONFIG) {
290 yajl_handle handle = yajl_alloc(&config_callbacks, NULL, NULL);
291 yajl_status state = yajl_parse(handle, (const unsigned char *)reply, reply_length);
297 case yajl_status_client_canceled:
298 case yajl_status_error:
299 errx(EXIT_FAILURE, "IPC: Could not parse JSON reply.");
301 } else if (reply_type == I3_IPC_REPLY_TYPE_SUBSCRIBE) {
304 if ((ret = ipc_recv_message(sockfd, &reply_type, &reply_length, &reply)) != 0) {
306 err(EXIT_FAILURE, "IPC: read()");
310 if (!(reply_type & I3_IPC_EVENT_MASK)) {
311 errx(EXIT_FAILURE, "IPC: Received reply of type %d but expected an event", reply_type);
315 fprintf(stdout, "%.*s\n", reply_length, reply);
321 printf("%.*s\n", reply_length, reply);