302 lines
9.2 KiB
C
302 lines
9.2 KiB
C
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
* © 2009 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, it’s even useful sometimes :-).
|
||
*
|
||
*/
|
||
#include "libi3.h"
|
||
|
||
#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 <yajl/yajl_parse.h>
|
||
#include <yajl/yajl_version.h>
|
||
|
||
#include <xcb/xcb.h>
|
||
#include <xcb/xcb_aux.h>
|
||
|
||
#include <i3/ipc.h>
|
||
|
||
/*
|
||
* Having verboselog() and errorlog() is necessary when using libi3.
|
||
*
|
||
*/
|
||
void verboselog(char *fmt, ...) {
|
||
va_list args;
|
||
|
||
va_start(args, fmt);
|
||
vfprintf(stdout, fmt, args);
|
||
va_end(args);
|
||
}
|
||
|
||
void errorlog(char *fmt, ...) {
|
||
va_list args;
|
||
|
||
va_start(args, fmt);
|
||
vfprintf(stderr, fmt, args);
|
||
va_end(args);
|
||
}
|
||
|
||
static char *last_key = NULL;
|
||
|
||
typedef struct reply_t {
|
||
bool success;
|
||
char *error;
|
||
char *input;
|
||
char *errorposition;
|
||
} reply_t;
|
||
|
||
static reply_t last_reply;
|
||
|
||
static int reply_boolean_cb(void *params, int val) {
|
||
if (strcmp(last_key, "success") == 0)
|
||
last_reply.success = val;
|
||
return 1;
|
||
}
|
||
|
||
static int reply_string_cb(void *params, const unsigned char *val, size_t len) {
|
||
char *str = scalloc(len + 1, 1);
|
||
strncpy(str, (const char *)val, len);
|
||
if (strcmp(last_key, "error") == 0)
|
||
last_reply.error = str;
|
||
else if (strcmp(last_key, "input") == 0)
|
||
last_reply.input = str;
|
||
else if (strcmp(last_key, "errorposition") == 0)
|
||
last_reply.errorposition = str;
|
||
else
|
||
free(str);
|
||
return 1;
|
||
}
|
||
|
||
static int reply_start_map_cb(void *params) {
|
||
return 1;
|
||
}
|
||
|
||
static int reply_end_map_cb(void *params) {
|
||
if (!last_reply.success) {
|
||
fprintf(stderr, "ERROR: Your command: %s\n", last_reply.input);
|
||
fprintf(stderr, "ERROR: %s\n", last_reply.errorposition);
|
||
fprintf(stderr, "ERROR: %s\n", last_reply.error);
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static int reply_map_key_cb(void *params, const unsigned char *keyVal, size_t keyLen) {
|
||
free(last_key);
|
||
last_key = scalloc(keyLen + 1, 1);
|
||
strncpy(last_key, (const char *)keyVal, keyLen);
|
||
return 1;
|
||
}
|
||
|
||
static yajl_callbacks reply_callbacks = {
|
||
.yajl_boolean = reply_boolean_cb,
|
||
.yajl_string = reply_string_cb,
|
||
.yajl_start_map = reply_start_map_cb,
|
||
.yajl_map_key = reply_map_key_cb,
|
||
.yajl_end_map = reply_end_map_cb,
|
||
};
|
||
|
||
/*******************************************************************************
|
||
* Config reply callbacks
|
||
*******************************************************************************/
|
||
|
||
static char *config_last_key = NULL;
|
||
|
||
static int config_string_cb(void *params, const unsigned char *val, size_t len) {
|
||
char *str = scalloc(len + 1, 1);
|
||
strncpy(str, (const char *)val, len);
|
||
if (strcmp(config_last_key, "config") == 0) {
|
||
fprintf(stdout, "%s", str);
|
||
}
|
||
free(str);
|
||
return 1;
|
||
}
|
||
|
||
static int config_start_map_cb(void *params) {
|
||
return 1;
|
||
}
|
||
|
||
static int config_end_map_cb(void *params) {
|
||
return 1;
|
||
}
|
||
|
||
static int config_map_key_cb(void *params, const unsigned char *keyVal, size_t keyLen) {
|
||
config_last_key = scalloc(keyLen + 1, 1);
|
||
strncpy(config_last_key, (const char *)keyVal, keyLen);
|
||
return 1;
|
||
}
|
||
|
||
static yajl_callbacks config_callbacks = {
|
||
.yajl_string = config_string_cb,
|
||
.yajl_start_map = config_start_map_cb,
|
||
.yajl_map_key = config_map_key_cb,
|
||
.yajl_end_map = config_end_map_cb,
|
||
};
|
||
|
||
int main(int argc, char *argv[]) {
|
||
#if defined(__OpenBSD__)
|
||
if (pledge("stdio rpath unix", NULL) == -1)
|
||
err(EXIT_FAILURE, "pledge");
|
||
#endif
|
||
char *socket_path = NULL;
|
||
int o, option_index = 0;
|
||
uint32_t message_type = I3_IPC_MESSAGE_TYPE_RUN_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') {
|
||
free(socket_path);
|
||
socket_path = sstrdup(optarg);
|
||
} else if (o == 't') {
|
||
if (strcasecmp(optarg, "command") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_RUN_COMMAND;
|
||
} else if (strcasecmp(optarg, "run_command") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_RUN_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_binding_modes") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_GET_BINDING_MODES;
|
||
} else if (strcasecmp(optarg, "get_version") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_GET_VERSION;
|
||
} else if (strcasecmp(optarg, "get_config") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_GET_CONFIG;
|
||
} else if (strcasecmp(optarg, "send_tick") == 0) {
|
||
message_type = I3_IPC_MESSAGE_TYPE_SEND_TICK;
|
||
} else {
|
||
printf("Unknown message type\n");
|
||
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\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;
|
||
} else if (o == '?') {
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
}
|
||
|
||
/* 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 = sstrdup("");
|
||
|
||
int sockfd = ipc_connect(socket_path);
|
||
if (ipc_send_message(sockfd, strlen(payload), message_type, (uint8_t *)payload) == -1)
|
||
err(EXIT_FAILURE, "IPC: write()");
|
||
free(payload);
|
||
|
||
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_REPLY_TYPE_COMMAND) {
|
||
yajl_handle handle = yajl_alloc(&reply_callbacks, NULL, NULL);
|
||
yajl_status state = yajl_parse(handle, (const unsigned char *)reply, reply_length);
|
||
yajl_free(handle);
|
||
|
||
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. */
|
||
} else if (reply_type == I3_IPC_REPLY_TYPE_CONFIG) {
|
||
yajl_handle handle = yajl_alloc(&config_callbacks, NULL, NULL);
|
||
yajl_status state = yajl_parse(handle, (const unsigned char *)reply, reply_length);
|
||
yajl_free(handle);
|
||
|
||
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.");
|
||
}
|
||
|
||
goto exit;
|
||
}
|
||
printf("%.*s\n", reply_length, reply);
|
||
|
||
exit:
|
||
free(reply);
|
||
|
||
close(sockfd);
|
||
|
||
return 0;
|
||
}
|