/*
* announce a network service.
*/
int
kannounce(char *addr, char *dir)
{
int ctl, n, m;
char buf[NETPATHLEN];
char buf2[Maxpath];
char netdir[NETPATHLEN];
char naddr[Maxpath];
char *cp;
/*
* translate the address
*/
if(nettrans(addr, naddr, sizeof(naddr), netdir, sizeof(netdir)) < 0)
return -1;
/*
* get a control channel
*/
ctl = kopen(netdir, ORDWR);
if(ctl<0)
return -1;
cp = strrchr(netdir, '/');
*cp = 0;
/*
* find out which line we have
*/
n = sprint(buf, "%.*s/", sizeof buf, netdir);
m = kread(ctl, &buf[n], sizeof(buf)-n-1);
if(m <= 0){
kclose(ctl);
return -1;
}
buf[n+m] = 0;
/*
* make the call
*/
n = snprint(buf2, sizeof buf2, "announce %s", naddr);
if(kwrite(ctl, buf2, n)!=n){
kclose(ctl);
return -1;
}
/*
* return directory etc.
*/
if(dir)
strcpy(dir, buf);
return ctl;
}
/*
* announce a network service.
*/
int
announce(const char *addr, char *dir)
{
int ctl, n, m;
char buf[Maxpath];
char buf2[Maxpath];
char netdir[Maxpath];
char naddr[Maxpath];
char *cp;
/*
* translate the address
*/
if(nettrans(addr, naddr, sizeof(naddr), netdir, sizeof(netdir)) < 0)
return -1;
/*
* get a control channel
*/
ctl = open(netdir, ORDWR);
if(ctl<0){
werrstr("announce opening %s: %r", netdir);
return -1;
}
cp = strrchr(netdir, '/');
if(cp == nil){
werrstr("announce arg format %s", netdir);
close(ctl);
return -1;
}
*cp = 0;
/*
* find out which line we have
*/
n = snprint(buf, sizeof(buf), "%s/", netdir);
m = read(ctl, &buf[n], sizeof(buf)-n-1);
if(m <= 0){
werrstr("announce reading %s: %r", netdir);
close(ctl);
return -1;
}
buf[n+m] = 0;
/*
* make the call
*/
n = snprint(buf2, sizeof(buf2), "announce %s", naddr);
if(write(ctl, buf2, n)!=n){
werrstr("announce writing %s: %r", netdir);
close(ctl);
return -1;
}
/*
* return directory etc.
*/
if(dir){
strncpy(dir, buf, NETPATHLEN);
dir[NETPATHLEN-1] = 0;
}
return ctl;
}
