/*
- * vim:ts=8:expandtab
+ * vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
*
*/
static void set_nonblock(int sockfd) {
- int flags = fcntl(sockfd, F_GETFL, 0);
- flags |= O_NONBLOCK;
- if (fcntl(sockfd, F_SETFL, flags) < 0)
- err(-1, "Could not set O_NONBLOCK");
+ int flags = fcntl(sockfd, F_GETFL, 0);
+ flags |= O_NONBLOCK;
+ if (fcntl(sockfd, F_SETFL, flags) < 0)
+ err(-1, "Could not set O_NONBLOCK");
}
/*
*
*/
static bool mkdirp(const char *path) {
- if (mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == 0)
- return true;
- if (errno != ENOENT) {
- ELOG("mkdir(%s) failed: %s\n", path, strerror(errno));
- return false;
- }
- char *copy = strdup(path);
- /* strip trailing slashes, if any */
- while (copy[strlen(copy)-1] == '/')
- copy[strlen(copy)-1] = '\0';
-
- char *sep = strrchr(copy, '/');
- if (sep == NULL)
- return false;
- *sep = '\0';
- bool result = false;
- if (mkdirp(copy))
- result = mkdirp(path);
- free(copy);
-
- return result;
+ if (mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == 0)
+ return true;
+ if (errno != ENOENT) {
+ ELOG("mkdir(%s) failed: %s\n", path, strerror(errno));
+ return false;
+ }
+ char *copy = strdup(path);
+ /* strip trailing slashes, if any */
+ while (copy[strlen(copy)-1] == '/')
+ copy[strlen(copy)-1] = '\0';
+
+ char *sep = strrchr(copy, '/');
+ if (sep == NULL)
+ return false;
+ *sep = '\0';
+ bool result = false;
+ if (mkdirp(copy))
+ result = mkdirp(path);
+ free(copy);
+
+ return result;
}
static void ipc_send_message(int fd, const unsigned char *payload,
int message_type, int message_size) {
- int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) +
- sizeof(uint32_t) + message_size;
- char msg[buffer_size];
- char *walk = msg;
-
- strcpy(walk, "i3-ipc");
- walk += strlen("i3-ipc");
- 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(fd, msg + sent_bytes, bytes_to_go);
- if (n == -1) {
- DLOG("write() failed: %s\n", strerror(errno));
- return;
- }
-
- sent_bytes += n;
- bytes_to_go -= n;
+ int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) +
+ sizeof(uint32_t) + message_size;
+ char msg[buffer_size];
+ char *walk = msg;
+
+ strcpy(walk, "i3-ipc");
+ walk += strlen("i3-ipc");
+ 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(fd, msg + sent_bytes, bytes_to_go);
+ if (n == -1) {
+ DLOG("write() failed: %s\n", strerror(errno));
+ return;
}
+
+ sent_bytes += n;
+ bytes_to_go -= n;
+ }
}
/*
*
*/
void ipc_send_event(const char *event, uint32_t message_type, const char *payload) {
- ipc_client *current;
- TAILQ_FOREACH(current, &all_clients, clients) {
- /* see if this client is interested in this event */
- bool interested = false;
- for (int i = 0; i < current->num_events; i++) {
- if (strcasecmp(current->events[i], event) != 0)
- continue;
- interested = true;
- break;
- }
- if (!interested)
- continue;
-
- ipc_send_message(current->fd, (const unsigned char*)payload,
- message_type, strlen(payload));
+ ipc_client *current;
+ TAILQ_FOREACH(current, &all_clients, clients) {
+ /* see if this client is interested in this event */
+ bool interested = false;
+ for (int i = 0; i < current->num_events; i++) {
+ if (strcasecmp(current->events[i], event) != 0)
+ continue;
+ interested = true;
+ break;
}
+ if (!interested)
+ continue;
+
+ ipc_send_message(current->fd, (const unsigned char*)payload,
+ message_type, strlen(payload));
+ }
}
/*
*
*/
void ipc_shutdown() {
- ipc_client *current;
- TAILQ_FOREACH(current, &all_clients, clients) {
- shutdown(current->fd, SHUT_RDWR);
- close(current->fd);
- }
+ ipc_client *current;
+ TAILQ_FOREACH(current, &all_clients, clients) {
+ shutdown(current->fd, SHUT_RDWR);
+ close(current->fd);
+ }
}
/*
*
*/
IPC_HANDLER(command) {
- /* To get a properly terminated buffer, we copy
- * message_size bytes out of the buffer */
- char *command = scalloc(message_size + 1);
- strncpy(command, (const char*)message, message_size);
- LOG("IPC: received: *%s*\n", command);
- const char *reply = parse_cmd((const char*)command);
- tree_render();
- free(command);
-
- /* If no reply was provided, we just use the default success message */
- if (reply == NULL)
- reply = "{\"success\":true}";
- ipc_send_message(fd, (const unsigned char*)reply,
- I3_IPC_REPLY_TYPE_COMMAND, strlen(reply));
+ /* To get a properly terminated buffer, we copy
+ * message_size bytes out of the buffer */
+ char *command = scalloc(message_size + 1);
+ strncpy(command, (const char*)message, message_size);
+ LOG("IPC: received: *%s*\n", command);
+ const char *reply = parse_cmd((const char*)command);
+ tree_render();
+ free(command);
+
+ /* If no reply was provided, we just use the default success message */
+ if (reply == NULL)
+ reply = "{\"success\":true}";
+ ipc_send_message(fd, (const unsigned char*)reply,
+ I3_IPC_REPLY_TYPE_COMMAND, strlen(reply));
}
void dump_node(yajl_gen gen, struct Con *con, bool inplace_restart) {
- y(map_open);
- ystr("id");
- y(integer, (long int)con);
+ y(map_open);
+ ystr("id");
+ y(integer, (long int)con);
- ystr("type");
- y(integer, con->type);
+ ystr("type");
+ y(integer, con->type);
- ystr("orientation");
- y(integer, con->orientation);
+ ystr("orientation");
+ y(integer, con->orientation);
- ystr("urgent");
- y(integer, con->urgent);
+ ystr("urgent");
+ y(integer, con->urgent);
- ystr("focused");
- y(integer, (con == focused));
+ ystr("focused");
+ y(integer, (con == focused));
- ystr("layout");
- y(integer, con->layout);
+ ystr("layout");
+ y(integer, con->layout);
- ystr("border");
- y(integer, con->border_style);
+ ystr("border");
+ y(integer, con->border_style);
- ystr("rect");
- y(map_open);
- ystr("x");
- y(integer, con->rect.x);
- ystr("y");
- y(integer, con->rect.y);
- ystr("width");
- y(integer, con->rect.width);
- ystr("height");
- y(integer, con->rect.height);
- y(map_close);
+ ystr("rect");
+ y(map_open);
+ ystr("x");
+ y(integer, con->rect.x);
+ ystr("y");
+ y(integer, con->rect.y);
+ ystr("width");
+ y(integer, con->rect.width);
+ ystr("height");
+ y(integer, con->rect.height);
+ y(map_close);
- ystr("name");
- ystr(con->name);
-
- ystr("window");
- if (con->window)
- y(integer, con->window->id);
- else y(null);
-
- ystr("nodes");
- y(array_open);
- Con *node;
- TAILQ_FOREACH(node, &(con->nodes_head), nodes) {
- dump_node(gen, node, inplace_restart);
- }
- y(array_close);
+ ystr("name");
+ ystr(con->name);
- ystr("floating_nodes");
- y(array_open);
- TAILQ_FOREACH(node, &(con->floating_head), floating_windows) {
- dump_node(gen, node, inplace_restart);
- }
- y(array_close);
+ ystr("window");
+ if (con->window)
+ y(integer, con->window->id);
+ else y(null);
- ystr("focus");
- y(array_open);
- TAILQ_FOREACH(node, &(con->focus_head), nodes) {
- y(integer, (long int)node);
- }
- y(array_close);
-
- ystr("fullscreen_mode");
- y(integer, con->fullscreen_mode);
-
- if (inplace_restart) {
- if (con->window != NULL) {
- ystr("swallows");
- y(array_open);
- y(map_open);
- ystr("id");
- y(integer, con->window->id);
- y(map_close);
- y(array_close);
- }
+ ystr("nodes");
+ y(array_open);
+ Con *node;
+ TAILQ_FOREACH(node, &(con->nodes_head), nodes) {
+ dump_node(gen, node, inplace_restart);
+ }
+ y(array_close);
+
+ ystr("floating_nodes");
+ y(array_open);
+ TAILQ_FOREACH(node, &(con->floating_head), floating_windows) {
+ dump_node(gen, node, inplace_restart);
+ }
+ y(array_close);
+
+ ystr("focus");
+ y(array_open);
+ TAILQ_FOREACH(node, &(con->focus_head), nodes) {
+ y(integer, (long int)node);
+ }
+ y(array_close);
+
+ ystr("fullscreen_mode");
+ y(integer, con->fullscreen_mode);
+
+ if (inplace_restart) {
+ if (con->window != NULL) {
+ ystr("swallows");
+ y(array_open);
+ y(map_open);
+ ystr("id");
+ y(integer, con->window->id);
+ y(map_close);
+ y(array_close);
}
+ }
- y(map_close);
+ y(map_close);
}
IPC_HANDLER(tree) {
- yajl_gen gen = yajl_gen_alloc(NULL, NULL);
- dump_node(gen, croot, false);
-
- const unsigned char *payload;
- unsigned int length;
- y(get_buf, &payload, &length);
+ yajl_gen gen = yajl_gen_alloc(NULL, NULL);
+ dump_node(gen, croot, false);
- ipc_send_message(fd, payload, I3_IPC_REPLY_TYPE_TREE, length);
- y(free);
+ const unsigned char *payload;
+ unsigned int length;
+ y(get_buf, &payload, &length);
+ ipc_send_message(fd, payload, I3_IPC_REPLY_TYPE_TREE, length);
+ y(free);
}
/*
*/
static int add_subscription(void *extra, const unsigned char *s,
unsigned int len) {
- ipc_client *client = extra;
+ ipc_client *client = extra;
- DLOG("should add subscription to extra %p, sub %.*s\n", client, len, s);
- int event = client->num_events;
+ DLOG("should add subscription to extra %p, sub %.*s\n", client, len, s);
+ int event = client->num_events;
- client->num_events++;
- client->events = realloc(client->events, client->num_events * sizeof(char*));
- /* We copy the string because it is not null-terminated and strndup()
- * is missing on some BSD systems */
- client->events[event] = scalloc(len+1);
- memcpy(client->events[event], s, len);
+ client->num_events++;
+ client->events = realloc(client->events, client->num_events * sizeof(char*));
+ /* We copy the string because it is not null-terminated and strndup()
+ * is missing on some BSD systems */
+ client->events[event] = scalloc(len+1);
+ memcpy(client->events[event], s, len);
- DLOG("client is now subscribed to:\n");
- for (int i = 0; i < client->num_events; i++)
- DLOG("event %s\n", client->events[i]);
- DLOG("(done)\n");
+ DLOG("client is now subscribed to:\n");
+ for (int i = 0; i < client->num_events; i++)
+ DLOG("event %s\n", client->events[i]);
+ DLOG("(done)\n");
- return 1;
+ return 1;
}
/*
*
*/
IPC_HANDLER(subscribe) {
- yajl_handle p;
- yajl_callbacks callbacks;
- yajl_status stat;
- ipc_client *current, *client = NULL;
+ yajl_handle p;
+ yajl_callbacks callbacks;
+ yajl_status stat;
+ ipc_client *current, *client = NULL;
+
+ /* Search the ipc_client structure for this connection */
+ TAILQ_FOREACH(current, &all_clients, clients) {
+ if (current->fd != fd)
+ continue;
+
+ client = current;
+ break;
+ }
- /* Search the ipc_client structure for this connection */
- TAILQ_FOREACH(current, &all_clients, clients) {
- if (current->fd != fd)
- continue;
+ if (client == NULL) {
+ ELOG("Could not find ipc_client data structure for fd %d\n", fd);
+ return;
+ }
- client = current;
- break;
- }
+ /* Setup the JSON parser */
+ memset(&callbacks, 0, sizeof(yajl_callbacks));
+ callbacks.yajl_string = add_subscription;
- if (client == NULL) {
- ELOG("Could not find ipc_client data structure for fd %d\n", fd);
- return;
- }
+ p = yajl_alloc(&callbacks, NULL, NULL, (void*)client);
+ stat = yajl_parse(p, (const unsigned char*)message, message_size);
+ if (stat != yajl_status_ok) {
+ unsigned char *err;
+ err = yajl_get_error(p, true, (const unsigned char*)message,
+ message_size);
+ ELOG("YAJL parse error: %s\n", err);
+ yajl_free_error(p, err);
- /* Setup the JSON parser */
- memset(&callbacks, 0, sizeof(yajl_callbacks));
- callbacks.yajl_string = add_subscription;
-
- p = yajl_alloc(&callbacks, NULL, NULL, (void*)client);
- stat = yajl_parse(p, (const unsigned char*)message, message_size);
- if (stat != yajl_status_ok) {
- unsigned char *err;
- err = yajl_get_error(p, true, (const unsigned char*)message,
- message_size);
- ELOG("YAJL parse error: %s\n", err);
- yajl_free_error(p, err);
-
- const char *reply = "{\"success\":false}";
- ipc_send_message(fd, (const unsigned char*)reply,
- I3_IPC_REPLY_TYPE_SUBSCRIBE, strlen(reply));
- yajl_free(p);
- return;
- }
- yajl_free(p);
- const char *reply = "{\"success\":true}";
+ const char *reply = "{\"success\":false}";
ipc_send_message(fd, (const unsigned char*)reply,
I3_IPC_REPLY_TYPE_SUBSCRIBE, strlen(reply));
+ yajl_free(p);
+ return;
+ }
+ yajl_free(p);
+ const char *reply = "{\"success\":true}";
+ ipc_send_message(fd, (const unsigned char*)reply,
+ I3_IPC_REPLY_TYPE_SUBSCRIBE, strlen(reply));
}
/* The index of each callback function corresponds to the numeric
* value of the message type (see include/i3/ipc.h) */
handler_t handlers[5] = {
- handle_command,
- handle_get_workspaces,
- handle_subscribe,
- handle_get_outputs,
- handle_tree
+ handle_command,
+ handle_get_workspaces,
+ handle_subscribe,
+ handle_get_outputs,
+ handle_tree
};
/*
*
*/
static void ipc_receive_message(EV_P_ struct ev_io *w, int revents) {
- char buf[2048];
- int n = read(w->fd, buf, sizeof(buf));
+ char buf[2048];
+ int n = read(w->fd, buf, sizeof(buf));
- /* On error or an empty message, we close the connection */
- if (n <= 0) {
+ /* On error or an empty message, we close the connection */
+ if (n <= 0) {
#if 0
- /* FIXME: I get these when closing a client socket,
- * therefore we just treat them as an error. Is this
- * correct? */
- if (errno == EAGAIN || errno == EWOULDBLOCK)
- return;
+ /* FIXME: I get these when closing a client socket,
+ * therefore we just treat them as an error. Is this
+ * correct? */
+ if (errno == EAGAIN || errno == EWOULDBLOCK)
+ return;
#endif
- /* If not, there was some kind of error. We don’t bother
- * and close the connection */
- close(w->fd);
+ /* If not, there was some kind of error. We don’t bother
+ * and close the connection */
+ close(w->fd);
- /* Delete the client from the list of clients */
- ipc_client *current;
- TAILQ_FOREACH(current, &all_clients, clients) {
- if (current->fd != w->fd)
- continue;
+ /* Delete the client from the list of clients */
+ ipc_client *current;
+ TAILQ_FOREACH(current, &all_clients, clients) {
+ if (current->fd != w->fd)
+ continue;
+
+ for (int i = 0; i < current->num_events; i++)
+ free(current->events[i]);
+ /* We can call TAILQ_REMOVE because we break out of the
+ * TAILQ_FOREACH afterwards */
+ TAILQ_REMOVE(&all_clients, current, clients);
+ break;
+ }
- for (int i = 0; i < current->num_events; i++)
- free(current->events[i]);
- /* We can call TAILQ_REMOVE because we break out of the
- * TAILQ_FOREACH afterwards */
- TAILQ_REMOVE(&all_clients, current, clients);
- break;
- }
+ ev_io_stop(EV_A_ w);
- ev_io_stop(EV_A_ w);
+ DLOG("IPC: client disconnected\n");
+ return;
+ }
- DLOG("IPC: client disconnected\n");
- return;
- }
+ /* Terminate the message correctly */
+ buf[n] = '\0';
- /* Terminate the message correctly */
- buf[n] = '\0';
+ /* Check if the message starts with the i3 IPC magic code */
+ if (n < strlen(I3_IPC_MAGIC)) {
+ DLOG("IPC: message too short, ignoring\n");
+ return;
+ }
- /* Check if the message starts with the i3 IPC magic code */
- if (n < strlen(I3_IPC_MAGIC)) {
- DLOG("IPC: message too short, ignoring\n");
- return;
- }
+ if (strncmp(buf, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC)) != 0) {
+ DLOG("IPC: message does not start with the IPC magic\n");
+ return;
+ }
- if (strncmp(buf, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC)) != 0) {
- DLOG("IPC: message does not start with the IPC magic\n");
- return;
+ uint8_t *message = (uint8_t*)buf;
+ while (n > 0) {
+ DLOG("IPC: n = %d\n", n);
+ message += strlen(I3_IPC_MAGIC);
+ n -= strlen(I3_IPC_MAGIC);
+
+ /* The next 32 bit after the magic are the message size */
+ uint32_t message_size = *((uint32_t*)message);
+ message += sizeof(uint32_t);
+ n -= sizeof(uint32_t);
+
+ if (message_size > n) {
+ DLOG("IPC: Either the message size was wrong or the message was not read completely, dropping\n");
+ return;
}
- uint8_t *message = (uint8_t*)buf;
- while (n > 0) {
- DLOG("IPC: n = %d\n", n);
- message += strlen(I3_IPC_MAGIC);
- n -= strlen(I3_IPC_MAGIC);
-
- /* The next 32 bit after the magic are the message size */
- uint32_t message_size = *((uint32_t*)message);
- message += sizeof(uint32_t);
- n -= sizeof(uint32_t);
-
- if (message_size > n) {
- DLOG("IPC: Either the message size was wrong or the message was not read completely, dropping\n");
- return;
- }
-
- /* The last 32 bits of the header are the message type */
- uint32_t message_type = *((uint32_t*)message);
- message += sizeof(uint32_t);
- n -= sizeof(uint32_t);
-
- if (message_type >= (sizeof(handlers) / sizeof(handler_t)))
- DLOG("Unhandled message type: %d\n", message_type);
- else {
- handler_t h = handlers[message_type];
- h(w->fd, message, n, message_size, message_type);
- }
- n -= message_size;
- message += message_size;
+ /* The last 32 bits of the header are the message type */
+ uint32_t message_type = *((uint32_t*)message);
+ message += sizeof(uint32_t);
+ n -= sizeof(uint32_t);
+
+ if (message_type >= (sizeof(handlers) / sizeof(handler_t)))
+ DLOG("Unhandled message type: %d\n", message_type);
+ else {
+ handler_t h = handlers[message_type];
+ h(w->fd, message, n, message_size, message_type);
}
+ n -= message_size;
+ message += message_size;
+ }
}
/*
*
*/
void ipc_new_client(EV_P_ struct ev_io *w, int revents) {
- struct sockaddr_un peer;
- socklen_t len = sizeof(struct sockaddr_un);
- int client;
- if ((client = accept(w->fd, (struct sockaddr*)&peer, &len)) < 0) {
- if (errno == EINTR)
- return;
- else perror("accept()");
- return;
- }
+ struct sockaddr_un peer;
+ socklen_t len = sizeof(struct sockaddr_un);
+ int client;
+ if ((client = accept(w->fd, (struct sockaddr*)&peer, &len)) < 0) {
+ if (errno == EINTR)
+ return;
+ else perror("accept()");
+ return;
+ }
- set_nonblock(client);
+ set_nonblock(client);
- struct ev_io *package = scalloc(sizeof(struct ev_io));
- ev_io_init(package, ipc_receive_message, client, EV_READ);
- ev_io_start(EV_A_ package);
+ struct ev_io *package = scalloc(sizeof(struct ev_io));
+ ev_io_init(package, ipc_receive_message, client, EV_READ);
+ ev_io_start(EV_A_ package);
- DLOG("IPC: new client connected\n");
+ DLOG("IPC: new client connected\n");
- ipc_client *new = scalloc(sizeof(ipc_client));
- new->fd = client;
+ ipc_client *new = scalloc(sizeof(ipc_client));
+ new->fd = client;
- TAILQ_INSERT_TAIL(&all_clients, new, clients);
+ TAILQ_INSERT_TAIL(&all_clients, new, clients);
}
/*
*
*/
int ipc_create_socket(const char *filename) {
- int sockfd;
-
- char *resolved = resolve_tilde(filename);
- DLOG("Creating IPC-socket at %s\n", resolved);
- char *copy = sstrdup(resolved);
- const char *dir = dirname(copy);
- if (!path_exists(dir))
- mkdirp(dir);
- free(copy);
-
- /* Unlink the unix domain socket before */
- unlink(resolved);
-
- if ((sockfd = socket(AF_LOCAL, SOCK_STREAM, 0)) < 0) {
- perror("socket()");
- free(resolved);
- return -1;
- }
+ int sockfd;
- (void)fcntl(sockfd, F_SETFD, FD_CLOEXEC);
+ char *resolved = resolve_tilde(filename);
+ DLOG("Creating IPC-socket at %s\n", resolved);
+ char *copy = sstrdup(resolved);
+ const char *dir = dirname(copy);
+ if (!path_exists(dir))
+ mkdirp(dir);
+ free(copy);
- struct sockaddr_un addr;
- memset(&addr, 0, sizeof(struct sockaddr_un));
- addr.sun_family = AF_LOCAL;
- strncpy(addr.sun_path, resolved, sizeof(addr.sun_path) - 1);
- if (bind(sockfd, (struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0) {
- perror("bind()");
- free(resolved);
- return -1;
- }
+ /* Unlink the unix domain socket before */
+ unlink(resolved);
+ if ((sockfd = socket(AF_LOCAL, SOCK_STREAM, 0)) < 0) {
+ perror("socket()");
free(resolved);
- set_nonblock(sockfd);
+ return -1;
+ }
- if (listen(sockfd, 5) < 0) {
- perror("listen()");
- return -1;
- }
+ (void)fcntl(sockfd, F_SETFD, FD_CLOEXEC);
+
+ struct sockaddr_un addr;
+ memset(&addr, 0, sizeof(struct sockaddr_un));
+ addr.sun_family = AF_LOCAL;
+ strncpy(addr.sun_path, resolved, sizeof(addr.sun_path) - 1);
+ if (bind(sockfd, (struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0) {
+ perror("bind()");
+ free(resolved);
+ return -1;
+ }
+
+ free(resolved);
+ set_nonblock(sockfd);
+
+ if (listen(sockfd, 5) < 0) {
+ perror("listen()");
+ return -1;
+ }
- return sockfd;
+ return sockfd;
}
projects / i3 / i3 / commitdiff