/*
- * i3bar - an xcb-based status- and ws-bar for i3
- *
- * © 2010 Axel Wagner and contributors
+ * vim:ts=4:sw=4:expandtab
*
- * See file LICNSE for license information
+ * i3bar - an xcb-based status- and ws-bar for i3
+ * © 2010-2012 Axel Wagner and contributors (see also: LICENSE)
*
- * src/ipc.c: Communicating with i3
+ * ipc.c: Communicating with i3
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <stdint.h>
+#include <string.h>
+#include <errno.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <i3/ipc.h>
#include "common.h"
-ev_io *i3_connection;
+ev_io *i3_connection;
-typedef void(*handler_t)(char*);
+const char *sock_path;
-/*
- * Get a connect to the IPC-interface of i3 and return a filedescriptor
- *
- */
-int get_ipc_fd(const char *socket_path) {
- int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
- if (sockfd == -1) {
- ELOG("Could not create Socket!\n");
- exit(EXIT_FAILURE);
- }
-
- 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) {
- ELOG("Could not connct to i3!\n");
- exit(EXIT_FAILURE);
- }
- return sockfd;
-}
+typedef void(*handler_t)(char*);
/*
* Called, when we get a reply to a command from i3.
void got_workspace_reply(char *reply) {
DLOG("Got Workspace-Data!\n");
parse_workspaces_json(reply);
- draw_bars();
+ draw_bars(false);
}
/*
DLOG("Parsing Outputs-JSON...\n");
parse_outputs_json(reply);
DLOG("Reconfiguring Windows...\n");
+ realloc_sl_buffer();
reconfig_windows();
+
+ i3_output *o_walk;
+ SLIST_FOREACH(o_walk, outputs, slist) {
+ kick_tray_clients(o_walk);
+ }
+
+ draw_bars(false);
+}
+
+/*
+ * Called when we get the configuration for our bar instance
+ *
+ */
+void got_bar_config(char *reply) {
+ DLOG("Received bar config \"%s\"\n", reply);
+ /* We initiate the main-function by requesting infos about the outputs and
+ * workspaces. Everything else (creating the bars, showing the right workspace-
+ * buttons and more) is taken care of by the event-drivenness of the code */
+ i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_OUTPUTS, NULL);
+ parse_config_json(reply);
+
+ /* Now we can actually use 'config', so let's subscribe to the appropriate
+ * events and request the workspaces if necessary. */
+ subscribe_events();
+ if (!config.disable_ws)
+ i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_WORKSPACES, NULL);
+
+ /* Initialize the rest of XCB */
+ init_xcb_late(config.fontname);
+
+ /* Resolve color strings to colorpixels and save them, then free the strings. */
+ init_colors(&(config.colors));
+ free_colors(&(config.colors));
+
+ /* The name of this function is actually misleading. Even if no command is
+ * specified, this function initiates the watchers to listen on stdin and
+ * react accordingly */
+ start_child(config.command);
+ FREE(config.command);
}
/* Data-structure to easily call the reply-handlers later */
&got_workspace_reply,
&got_subscribe_reply,
&got_output_reply,
+ NULL,
+ NULL,
+ &got_bar_config,
};
/*
void got_output_event(char *event) {
DLOG("Got Output Event!\n");
i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_OUTPUTS, NULL);
- i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_WORKSPACES, NULL);
+ if (!config.disable_ws) {
+ i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_WORKSPACES, NULL);
+ }
}
/* Data-structure to easily call the reply-handlers later */
DLOG("Got data!\n");
int fd = watcher->fd;
- /* First we only read the header, because we know it's length */
+ /* First we only read the header, because we know its length */
uint32_t header_len = strlen(I3_IPC_MAGIC) + sizeof(uint32_t)*2;
- char *header = malloc(header_len);
- if (header == NULL) {
- ELOG("Could not allocate memory!\n");
- exit(EXIT_FAILURE);
- }
+ char *header = smalloc(header_len);
/* We first parse the fixed-length IPC-header, to know, how much data
* we have to expect */
while (rec < header_len) {
int n = read(fd, header + rec, header_len - rec);
if (n == -1) {
- ELOG("read() failed!\n");
+ ELOG("read() failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
if (n == 0) {
- ELOG("Nothing to read!\n");
- exit(EXIT_FAILURE);
+ /* EOF received. Since i3 will restart i3bar instances as appropriate,
+ * we exit here. */
+ DLOG("EOF received, exiting...\n");
+ clean_xcb();
+ exit(EXIT_SUCCESS);
}
rec += n;
}
}
char *walk = header + strlen(I3_IPC_MAGIC);
- uint32_t size = *((uint32_t*) walk);
+ uint32_t size;
+ memcpy(&size, (uint32_t*)walk, sizeof(uint32_t));
walk += sizeof(uint32_t);
- uint32_t type = *((uint32_t*) walk);
+ uint32_t type;
+ memcpy(&type, (uint32_t*)walk, sizeof(uint32_t));
/* Now that we know, what to expect, we can start read()ing the rest
* of the message */
- char *buffer = malloc(size + 1);
- if (buffer == NULL) {
- ELOG("Could not allocate memory!\n");
- exit(EXIT_FAILURE);
- }
+ char *buffer = smalloc(size + 1);
rec = 0;
while (rec < size) {
int n = read(fd, buffer + rec, size - rec);
if (n == -1) {
- ELOG("read() failed!\n");
+ ELOG("read() failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
if (n == 0) {
type ^= 1 << 31;
event_handlers[type](buffer);
} else {
- reply_handlers[type](buffer);
+ if (reply_handlers[type])
+ reply_handlers[type](buffer);
}
FREE(header);
/* TODO: I'm not entirely sure if this buffer really has to contain more
* than the pure header (why not just write() the payload from *payload?),
* but we leave it for now */
- char *buffer = malloc(to_write);
- if (buffer == NULL) {
- ELOG("Could not allocate memory\n");
- exit(EXIT_FAILURE);
- }
-
+ char *buffer = smalloc(to_write);
char *walk = buffer;
strncpy(buffer, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC));
memcpy(walk, &type, sizeof(uint32_t));
walk += sizeof(uint32_t);
- strncpy(walk, payload, len);
+ if (payload != NULL)
+ strncpy(walk, payload, len);
uint32_t written = 0;
while (to_write > 0) {
int n = write(i3_connection->fd, buffer + written, to_write);
if (n == -1) {
- ELOG("write() failed!\n");
+ ELOG("write() failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
*
*/
int init_connection(const char *socket_path) {
- int sockfd = get_ipc_fd(socket_path);
-
- i3_connection = malloc(sizeof(ev_io));
+ sock_path = socket_path;
+ int sockfd = ipc_connect(socket_path);
+ i3_connection = smalloc(sizeof(ev_io));
ev_io_init(i3_connection, &got_data, sockfd, EV_READ);
ev_io_start(main_loop, i3_connection);
-
return 1;
}
+/*
+ * Destroy the connection to i3.
+ */
+void destroy_connection(void) {
+ close(i3_connection->fd);
+ ev_io_stop(main_loop, i3_connection);
+}
+
/*
* Subscribe to all the i3-events, we need
*
*/
-void subscribe_events() {
- i3_send_msg(I3_IPC_MESSAGE_TYPE_SUBSCRIBE, "[ \"workspace\", \"output\" ]");
+void subscribe_events(void) {
+ if (config.disable_ws) {
+ i3_send_msg(I3_IPC_MESSAGE_TYPE_SUBSCRIBE, "[ \"output\" ]");
+ } else {
+ i3_send_msg(I3_IPC_MESSAGE_TYPE_SUBSCRIBE, "[ \"workspace\", \"output\" ]");
+ }
}
projects / i3 / i3 / blobdiff