/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
#include <err.h>
#include <stdint.h>
#include <getopt.h>
-#include <glob.h>
+#include <limits.h>
+
+#include <xcb/xcb.h>
+#include <xcb/xcb_aux.h>
#include <i3/ipc.h>
+static char *socket_path;
+
/*
- * This function resolves ~ in pathnames (and more, see glob(3)).
+ * Try to get the socket path from X11 and return NULL if it doesn’t work.
+ * As i3-msg is a short-running tool, we don’t bother with cleaning up the
+ * connection and leave it up to the operating system on exit.
*
*/
-static char *glob_path(const char *path) {
- static glob_t globbuf;
- if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
- errx(EXIT_FAILURE, "glob() failed");
- char *result = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
- if (result == NULL)
- err(EXIT_FAILURE, "malloc() failed");
- globfree(&globbuf);
- return result;
+static char *socket_path_from_x11() {
+ xcb_connection_t *conn;
+ int screen;
+ if ((conn = xcb_connect(NULL, &screen)) == NULL ||
+ xcb_connection_has_error(conn))
+ return NULL;
+ xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screen);
+ xcb_window_t root = root_screen->root;
+
+ xcb_intern_atom_cookie_t atom_cookie;
+ xcb_intern_atom_reply_t *atom_reply;
+
+ atom_cookie = xcb_intern_atom(conn, 0, strlen("I3_SOCKET_PATH"), "I3_SOCKET_PATH");
+ atom_reply = xcb_intern_atom_reply(conn, atom_cookie, NULL);
+ if (atom_reply == NULL)
+ return NULL;
+
+ xcb_get_property_cookie_t prop_cookie;
+ xcb_get_property_reply_t *prop_reply;
+ prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
+ XCB_GET_PROPERTY_TYPE_ANY, 0, PATH_MAX);
+ prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
+ if (prop_reply == NULL || xcb_get_property_value_length(prop_reply) == 0)
+ return NULL;
+ if (asprintf(&socket_path, "%.*s", xcb_get_property_value_length(prop_reply),
+ (char*)xcb_get_property_value(prop_reply)) == -1)
+ return NULL;
+ return socket_path;
}
/*
*/
static void ipc_send_message(int sockfd, uint32_t message_size,
uint32_t message_type, uint8_t *payload) {
- int buffer_size = strlen(I3_IPC_MAGIC) + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
- char msg[buffer_size];
- char *walk = msg;
-
- strcpy(walk, I3_IPC_MAGIC);
- walk += strlen(I3_IPC_MAGIC);
- memcpy(walk, &message_size, sizeof(uint32_t));
- walk += sizeof(uint32_t);
- memcpy(walk, &message_type, sizeof(uint32_t));
- walk += sizeof(uint32_t);
- memcpy(walk, payload, message_size);
-
- int sent_bytes = 0;
- int bytes_to_go = buffer_size;
- while (sent_bytes < bytes_to_go) {
- int n = write(sockfd, msg + sent_bytes, bytes_to_go);
- if (n == -1)
- err(EXIT_FAILURE, "write() failed");
-
- sent_bytes += n;
- bytes_to_go -= n;
- }
+ int buffer_size = strlen(I3_IPC_MAGIC) + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
+ char msg[buffer_size];
+ char *walk = msg;
+
+ strcpy(walk, I3_IPC_MAGIC);
+ walk += strlen(I3_IPC_MAGIC);
+ memcpy(walk, &message_size, sizeof(uint32_t));
+ walk += sizeof(uint32_t);
+ memcpy(walk, &message_type, sizeof(uint32_t));
+ walk += sizeof(uint32_t);
+ memcpy(walk, payload, message_size);
+
+ int sent_bytes = 0;
+ int bytes_to_go = buffer_size;
+ while (sent_bytes < bytes_to_go) {
+ int n = write(sockfd, msg + sent_bytes, bytes_to_go);
+ if (n == -1)
+ err(EXIT_FAILURE, "write() failed");
+
+ sent_bytes += n;
+ bytes_to_go -= n;
+ }
}
static void ipc_recv_message(int sockfd, uint32_t message_type,
uint32_t *reply_length, uint8_t **reply) {
- /* Read the message header first */
- uint32_t to_read = strlen(I3_IPC_MAGIC) + sizeof(uint32_t) + sizeof(uint32_t);
- char msg[to_read];
- char *walk = msg;
-
- uint32_t read_bytes = 0;
- while (read_bytes < to_read) {
- int n = read(sockfd, msg + read_bytes, to_read);
- if (n == -1)
- err(EXIT_FAILURE, "read() failed");
- if (n == 0)
- errx(EXIT_FAILURE, "received EOF instead of reply");
-
- read_bytes += n;
- to_read -= n;
- }
-
- if (memcmp(walk, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC)) != 0)
- errx(EXIT_FAILURE, "invalid magic in reply");
-
- walk += strlen(I3_IPC_MAGIC);
- *reply_length = *((uint32_t*)walk);
- walk += sizeof(uint32_t);
- if (*((uint32_t*)walk) != message_type)
- errx(EXIT_FAILURE, "unexpected reply type (got %d, expected %d)", *((uint32_t*)walk), message_type);
- walk += sizeof(uint32_t);
-
- *reply = malloc(*reply_length);
- if ((*reply) == NULL)
- err(EXIT_FAILURE, "malloc() failed");
-
- to_read = *reply_length;
- read_bytes = 0;
- while (read_bytes < to_read) {
- int n = read(sockfd, *reply + read_bytes, to_read);
- if (n == -1)
- err(EXIT_FAILURE, "read() failed");
-
- read_bytes += n;
- to_read -= n;
- }
+ /* Read the message header first */
+ uint32_t to_read = strlen(I3_IPC_MAGIC) + sizeof(uint32_t) + sizeof(uint32_t);
+ char msg[to_read];
+ char *walk = msg;
+
+ uint32_t read_bytes = 0;
+ while (read_bytes < to_read) {
+ int n = read(sockfd, msg + read_bytes, to_read);
+ if (n == -1)
+ err(EXIT_FAILURE, "read() failed");
+ if (n == 0)
+ errx(EXIT_FAILURE, "received EOF instead of reply");
+
+ read_bytes += n;
+ to_read -= n;
+ }
+
+ if (memcmp(walk, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC)) != 0)
+ errx(EXIT_FAILURE, "invalid magic in reply");
+
+ walk += strlen(I3_IPC_MAGIC);
+ *reply_length = *((uint32_t*)walk);
+ walk += sizeof(uint32_t);
+ if (*((uint32_t*)walk) != message_type)
+ errx(EXIT_FAILURE, "unexpected reply type (got %d, expected %d)", *((uint32_t*)walk), message_type);
+ walk += sizeof(uint32_t);
+
+ *reply = malloc(*reply_length);
+ if ((*reply) == NULL)
+ err(EXIT_FAILURE, "malloc() failed");
+
+ to_read = *reply_length;
+ read_bytes = 0;
+ while (read_bytes < to_read) {
+ int n = read(sockfd, *reply + read_bytes, to_read);
+ if (n == -1)
+ err(EXIT_FAILURE, "read() failed");
+
+ read_bytes += n;
+ to_read -= n;
+ }
}
int main(int argc, char *argv[]) {
- char *socket_path = glob_path("~/.i3/ipc.sock");
- int o, option_index = 0;
- int message_type = I3_IPC_MESSAGE_TYPE_COMMAND;
- char *payload = "";
- 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') {
- socket_path = glob_path(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 {
- printf("Unknown message type\n");
- printf("Known types: command, get_workspaces\n");
- exit(EXIT_FAILURE);
- }
- } else if (o == 'q') {
- quiet = true;
- } else if (o == 'v') {
- printf("i3-msg " I3_VERSION);
- return 0;
- } else if (o == 'h') {
- printf("i3-msg " I3_VERSION);
- printf("i3-msg [-s <socket>] [-t <type>] <message>\n");
- return 0;
- }
+ socket_path = getenv("I3SOCK");
+ int o, option_index = 0;
+ int 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 = strdup(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 {
+ printf("Unknown message type\n");
+ printf("Known types: command, get_workspaces, get_outputs, get_tree, get_marks\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 = socket_path_from_x11();
+
+ /* Fall back to the default socket path */
+ if (socket_path == NULL)
+ socket_path = strdup("/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) {
+ if (!(payload = strdup(argv[optind])))
+ err(EXIT_FAILURE, "strdup(argv[optind])");
+ } else {
+ char *both;
+ if (asprintf(&both, "%s %s", payload, argv[optind]) == -1)
+ err(EXIT_FAILURE, "asprintf");
+ free(payload);
+ payload = both;
}
+ optind++;
+ }
- if (optind < argc)
- payload = argv[optind];
+ if (!payload)
+ payload = "";
- int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
- if (sockfd == -1)
- err(EXIT_FAILURE, "Could not create socket");
+ 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;
- strcpy(addr.sun_path, socket_path);
- if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0)
- err(EXIT_FAILURE, "Could not connect to i3");
+ 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");
- ipc_send_message(sockfd, strlen(payload), message_type, (uint8_t*)payload);
+ ipc_send_message(sockfd, strlen(payload), message_type, (uint8_t*)payload);
- if (quiet)
- return 0;
+ if (quiet)
+ return 0;
- uint32_t reply_length;
- uint8_t *reply;
- ipc_recv_message(sockfd, message_type, &reply_length, &reply);
- printf("%.*s", reply_length, reply);
- free(reply);
+ uint32_t reply_length;
+ uint8_t *reply;
+ ipc_recv_message(sockfd, message_type, &reply_length, &reply);
+ printf("%.*s\n", reply_length, reply);
+ free(reply);
- close(sockfd);
+ close(sockfd);
- return 0;
+ return 0;
}
projects / i3 / i3 / blobdiff