initial import
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521c9b0442
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5
README
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5
README
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This is logikeys, a program that listens for scancodes and behaves according to a configuration file.
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See logikeysrc for how it is configured.
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I build with (on FreeBSD):
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cc -L/usr/X11R6/lib -I/usr/X11R6/include -ggdb -lX11 -o logikeys logikeys.c
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310
logikeys.c
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310
logikeys.c
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/*
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* Small C program to execute arbitrary commands or write to pipes/files
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* upon keypresses of arbitrary scancodes (useful for logitech and other
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* multimedia keyboards.
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* (C)2005, Dan Ponte
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* BSD license
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <signal.h>
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#include <X11/Xlib.h>
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#define EV_CMD 0x1
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#define EV_WRITE 0x2
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Display *d;
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Window r;
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struct keyentry {
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int scancode;
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int type;
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int fd;
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void *data;
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size_t dlen;
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char *command;
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struct keyentry *next;
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};
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struct keyentry *head = NULL, *last = NULL;
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char buf[1024];
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int wquit = 0;
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int udom_open(fn) /* not really a udom, but oh well...sounds cool */
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char *fn;
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{
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int fd;
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fd = open(fn, O_APPEND|O_WRONLY);
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if(fd == -1) {
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perror("udopen");
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exit(-1);
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}
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return fd;
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}
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void qsig(s)
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int s;
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{
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wquit = 1;
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}
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void get_keys(h)
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struct keyentry *h;
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{
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struct keyentry *c;
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for(c = h; c != NULL; c = c->next) {
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XGrabKey(d, c->scancode, AnyModifier, r, False, GrabModeAsync, GrabModeAsync);
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}
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}
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void init_x(void)
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{
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char *dpy;
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dpy = getenv("DISPLAY");
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if(dpy == NULL) {
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fprintf(stderr, "error: needs $DISPLAY\n");
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exit(-1);
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}
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d = XOpenDisplay(dpy);
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if(d == NULL) {
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fprintf(stderr, "error: cannot open display %s\n", dpy);
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exit(-2);
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}
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r = DefaultRootWindow(d);
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if(!r) {
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fprintf(stderr, "error: no root window\n");
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exit(-3);
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}
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}
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void free_keys(h)
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struct keyentry *h;
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{
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struct keyentry *n, *c = h;
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while(c != NULL) {
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n = c->next;
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XUngrabKey(d, c->scancode, AnyModifier, r);
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if(c->command != NULL)
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free(c->command);
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if(c->data != NULL)
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free(c->data);
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if(c->fd != 0)
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close(c->fd);
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free(c);
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c = n;
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}
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}
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int read_config_file(file, hp, lp)
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char *file;
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struct keyentry **hp;
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struct keyentry **lp;
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{
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FILE *f;
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char *kc, *cmd, *r;
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struct keyentry *new;
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int lnum = 0;
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if((f = fopen(file, "r")) == NULL) {
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perror("logikeys");
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exit(-1);
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}
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while(!feof(f)) {
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char *nlt;
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fgets(buf, 1023, f);
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lnum++;
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if(*buf == '#' || *buf == '\n' || *buf == '\0')
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continue;
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if((nlt = strrchr(buf, '\n')) != NULL)
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*nlt = '\0';
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kc = buf;
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cmd = buf;
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r = strsep(&cmd, ":");
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if(*r == '\0') {
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fprintf(stderr, "Syntax error at line %d!\n", lnum);
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exit(-1);
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}
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if(cmd == NULL) {
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continue;
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}
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new = calloc(1, sizeof(struct keyentry));
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if(*hp == NULL) {
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*hp = new;
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*lp = new;
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} else {
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(*lp)->next = new;
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*lp = new;
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}
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new->scancode = atoi(kc);
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if(*cmd == '=') {
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struct keyentry *ct;
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int found = 0, tsc;
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char *ssrc;
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char *tpipe = cmd + 1;
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char *tdata = tpipe;
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ssrc = strsep(&tdata, "|");
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if(*ssrc == '\0') {
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fprintf(stderr, "Syntax error on line %d!\n", lnum);
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exit(-1);
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}
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tsc = atoi(tpipe);
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for(ct = *hp; ct != NULL; ct = ct->next) {
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if(ct->scancode == tsc && ct->fd != 0) {
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found = 1;
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break;
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}
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}
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if(!found) {
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fprintf(stderr, "No such scancode defined with pipe %d (line %d)\n", tsc, lnum);
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exit(-1);
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}
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new->type = EV_WRITE;
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new->fd = ct->fd;
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new->data = strdup(tdata);
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new->dlen = strlen(new->data);
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} else if(*cmd == '|') {
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char *pipefn, *dat, *ssret;
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pipefn = cmd + 1;
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dat = pipefn;
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ssret = strsep(&dat, "|");
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if(*ssret == '\0') {
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fprintf(stderr, "Syntax error on line %d!\n", lnum);
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exit(-1);
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}
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if((new->fd = udom_open(pipefn)) == -1) {
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/* not reached? */
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fprintf(stderr, "Error opening pipe %s (line %d)\n", pipefn, lnum);
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exit(-2);
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}
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new->type = EV_WRITE;
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new->data = strdup(dat);
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new->dlen = strlen(new->data);
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} else {
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new->type = EV_CMD;
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new->command = strdup(cmd);
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}
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}
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fclose(f);
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return 1;
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}
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void doevent(e)
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struct keyentry *e;
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{
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char *cmd;
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size_t tl;
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int rc;
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switch(e->type) {
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case EV_CMD:
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tl = strlen(e->command) + 4;
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cmd = malloc(tl);
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strlcpy(cmd, e->command, tl);
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strlcat(cmd, " &", tl);
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rc = system(cmd);
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free(cmd);
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return;
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case EV_WRITE:
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if(write(e->fd, e->data, e->dlen) == -1) {
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perror("ev_write");
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wquit = 1;
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return;
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}
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return;
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}
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}
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void handle_ev(k)
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int k;
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{
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struct keyentry *c;
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for(c = head; c != NULL; c = c->next) {
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if(c->scancode == k) {
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doevent(c);
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}
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}
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}
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void ev_loop(void)
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{
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long mask = KeyPressMask;
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XEvent ev;
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while(!wquit) {
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while(XCheckMaskEvent(d, mask, &ev)) {
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handle_ev(ev.xkey.keycode);
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}
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usleep(100000);
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}
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}
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void usage(pn)
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char *pn;
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{
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printf("%s: usage: %s [-h] [-v] configfile\n", pn, pn);
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}
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void version(pn)
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char *pn;
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{
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printf("%s: logikeys v0.1\n(C)2005, Dan Ponte\n", pn);
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}
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int main(argc, argv)
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int argc;
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char **argv;
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{
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int c;
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char *pn = *argv;
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signal(SIGINT, qsig);
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signal(SIGTERM, qsig);
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while((c = getopt(argc, argv, "hv")) != -1)
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switch(c) {
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case 'h':
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usage(*argv);
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return 1;
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case 'v':
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version(*argv);
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return 1;
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}
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argc -= optind;
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argv += optind;
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if(argc != 1) {
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fprintf(stderr, "%s: must specify config file!\n", pn);
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usage(pn);
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exit(-1);
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}
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read_config_file(*argv, &head, &last);
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init_x();
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get_keys(head);
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ev_loop();
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free_keys(head);
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return 0;
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}
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28
logikeysrc
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28
logikeysrc
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# example configuration
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# for the logitech "corded keyboard"
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# requires xmms-pipe be running to run (might fix in a later version)
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# general format of lines is
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# scancode:action
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# If action starts with '|' it is in the format of
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# |/pipe/filename|text to write
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# If action starts with '=' it means "use the same pipe handle as scancode X"
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# In all other cases, action is just a command (" &" will be appended to run in the background)
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# next key
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153:|/home/dcp1990/.xmms/inpipe|playlist next
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# prev key
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144:=153|playlist prev
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# stop key
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164:=153|stop
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# mute key
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160:=153|mute
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# play/pause key
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162:=153|play_pause
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# volume up
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176:=153|add_volume 8
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# volume down
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174:=153|add_volume -8
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# calculator key
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161:xcalc
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# home key
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178:opera http://www.yahoo.com/
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