VtConn*
vtconn(int infd, int outfd)
{
VtConn *z;
NetConnInfo *nci;
z = vtmallocz(sizeof(VtConn));
z->tagrend.l = &z->lk;
z->rpcfork.l = &z->lk;
z->infd = infd;
z->outfd = outfd;
z->part = packetalloc();
nci = getnetconninfo(nil, infd);
if(nci == nil)
snprint(z->addr, sizeof z->addr, "/dev/fd/%d", infd);
else{
strecpy(z->addr, z->addr+sizeof z->addr, nci->raddr);
freenetconninfo(nci);
}
return z;
}
NetConnInfo*
getnetconninfo(const char *dir, int fd)
{
NetConnInfo *nci;
char *cp;
Dir *d;
char spec[10];
char path[128];
char netname[128], *p;
/* get a directory address via fd */
if(dir == nil || *dir == 0){
if(fd2path(fd, path, sizeof(path)) < 0)
return nil;
cp = strrchr(path, '/');
if(cp == nil)
return nil;
*cp = 0;
dir = path;
}
nci = mallocz(sizeof *nci, 1);
if(nci == nil)
return nil;
/* copy connection directory */
nci->dir = strdup(dir);
if(nci->dir == nil)
goto err;
/* get netroot */
nci->root = strdup(dir);
if(nci->root == nil)
goto err;
cp = strchr(nci->root+1, '/');
if(cp == nil)
goto err;
*cp = 0;
/* figure out bind spec */
d = dirstat(nci->dir);
if(d != nil){
sprint(spec, "#%C%d", d->type, d->dev);
nci->spec = strdup(spec);
}
if(nci->spec == nil)
nci->spec = unknown;
free(d);
/* get the two end points */
getendpoint(nci->dir, "local", &nci->lsys, &nci->lserv);
if(nci->lsys == nil || nci->lserv == nil)
goto err;
getendpoint(nci->dir, "remote", &nci->rsys, &nci->rserv);
if(nci->rsys == nil || nci->rserv == nil)
goto err;
strecpy(netname, netname+sizeof netname, nci->dir);
if((p = strrchr(netname, '/')) != nil)
*p = 0;
if(strncmp(netname, "/net/", 5) == 0)
memmove(netname, netname+5, strlen(netname+5)+1);
nci->laddr = smprint("%s!%s!%s", netname, nci->lsys, nci->lserv);
nci->raddr = smprint("%s!%s!%s", netname, nci->rsys, nci->rserv);
if(nci->laddr == nil || nci->raddr == nil)
goto err;
return nci;
err:
freenetconninfo(nci);
return nil;
}
