140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
/* see bspc.h for copyright and distribution information */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <xcb/xcb.h>
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#include <poll.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include "module.h"
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#include "bspwm.h"
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__attribute__((noreturn))
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void err(char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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char *send_msg_to_bspwm(char *args[], int count) {
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int sock_fd;
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struct sockaddr_un sock_address;
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char msg[BUFSIZ];
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static char rsp[BUFSIZ];
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sock_address.sun_family = AF_UNIX;
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char *sp;
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if((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
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err("Failed to create the socket.\n");
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}
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sp = getenv(SOCKET_ENV_VAR);
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if(sp != NULL) {
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snprintf(sock_address.sun_path, sizeof(sock_address.sun_path), "%s", sp);
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} else {
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char *host = NULL;
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int dn = 0, sn = 0;
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if(xcb_parse_display(NULL, &host, &dn, &sn) != 0) {
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snprintf(sock_address.sun_path, sizeof(sock_address.sun_path), SOCKET_PATH_TPL, host, dn, sn);
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}
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free(host);
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}
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if(connect(sock_fd, (struct sockaddr *) &sock_address, sizeof(sock_address)) == -1) {
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err("Failed to connect to the socket.\n");
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}
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int msg_len = 0;
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for(int offset = 0, rem = sizeof(msg), n = 0; count > 0 && rem > 0; offset += n, rem -= n, count--, args++) {
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n = snprintf(msg + offset, rem, "%s%c", *args, 0);
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msg_len += n;
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}
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if(send(sock_fd, msg, msg_len, 0) == -1) {
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err("Failed to send the data.\n");
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}
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int nb;
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struct pollfd fds[] = {
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{sock_fd, POLLIN, 0},
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{STDOUT_FILENO, POLLHUP, 0},
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};
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while(poll(fds, 2, -1) > 0) {
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if(fds[0].revents & POLLIN) {
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if((nb = recv(sock_fd, rsp, sizeof(rsp)-1, 0)) > 0) {
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rsp[nb] = '\0';
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return rsp;
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} else {
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break;
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}
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}
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if(fds[1].revents & (POLLERR | POLLHUP)) {
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break;
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}
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}
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close(sock_fd);
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return NULL;
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}
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int bspwm_update(struct module *module) {
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char current[2];
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char *occupied[] = {"query", "-D", "-d", ".occupied", "--names"};
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char *focused[] = {"query", "-D", "-d", ".focused", "--names"};
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char *result;
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result = send_msg_to_bspwm(occupied, LENGTH(occupied));
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if(!result) {
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printf("error: sending message to bspwm failed!\n");
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return 1;
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}
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memcpy(&module->buffer, result, MODULE_BUFFER_LEN);
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result = send_msg_to_bspwm(focused, LENGTH(focused));
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if(!result) {
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printf("error: sending message to bspwm failed!\n");
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return 1;
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}
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memcpy(¤t, result, 2);
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current[1] = '\0';
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for(int i = 0; i < MODULE_BUFFER_LEN; i++) {
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if(module->buffer[i] == '\0' && i) {
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if(*current != '\0' && i <= MODULE_BUFFER_LEN - 2) {
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module->buffer[i - 1] = ' ';
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module->buffer[i] = *current;
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module->buffer[i + 1] = '<';
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module->buffer[i + 2] = '\0';
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} else module->buffer[i - 1] = '\0';
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break;
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}
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if(isdigit(module->buffer[i]) && *current == module->buffer[i]) {
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if(i <= MODULE_BUFFER_LEN - 2) module->buffer[i + 1] = '<';
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*current = '\0';
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}
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if(module->buffer[i] == '\n')
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module->buffer[i] = ' ';
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}
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return 0;
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}
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