i3/i3-msg/main.c

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/*
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* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
*
* i3-msg/main.c: Utility which sends messages to a running i3-instance using
* IPC via UNIX domain sockets.
*
* This (in combination with libi3/ipc_send_message.c and
* libi3/ipc_recv_message.c) serves as an example for how to send your own
* messages to i3.
*
* Additionally, its even useful sometimes :-).
*
*/
#include <stdio.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <err.h>
#include <stdint.h>
#include <getopt.h>
#include <limits.h>
#include <xcb/xcb.h>
#include <xcb/xcb_aux.h>
#include "libi3.h"
#include <i3/ipc.h>
static char *socket_path;
int main(int argc, char *argv[]) {
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socket_path = getenv("I3SOCK");
int o, option_index = 0;
int message_type = I3_IPC_MESSAGE_TYPE_COMMAND;
char *payload = NULL;
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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);
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} 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;
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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;
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else {
printf("Unknown message type\n");
printf("Known types: command, get_workspaces, get_outputs, get_tree, get_marks, get_bar_config, get_version\n");
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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;
}
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}
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if (socket_path == NULL)
socket_path = root_atom_contents("I3_SOCKET_PATH");
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/* 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 dont 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;
if (asprintf(&both, "%s %s", payload, argv[optind]) == -1)
err(EXIT_FAILURE, "asprintf");
free(payload);
payload = both;
}
optind++;
}
if (!payload)
payload = "";
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int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd == -1)
err(EXIT_FAILURE, "Could not create socket");
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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);
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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()");
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if (quiet)
return 0;
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uint32_t reply_length;
uint8_t *reply;
int ret;
if ((ret = ipc_recv_message(sockfd, message_type, &reply_length, &reply)) != 0) {
if (ret == -1)
err(EXIT_FAILURE, "IPC: read()");
exit(1);
}
printf("%.*s\n", reply_length, reply);
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free(reply);
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close(sockfd);
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return 0;
}