void
vtrespond(VtReq *r)
{
Packet *p;
VtSconn *sc;
sc = r->sc;
if(r->rx.tag != r->tx.tag)
abort();
if(r->rx.msgtype != r->tx.msgtype+1 && r->rx.msgtype != VtRerror)
abort();
if(chattyventi)
fprint(2, "%s -> %F\n", argv0, &r->rx);
if((p = vtfcallpack(&r->rx)) == nil){
vtlog(VtServerLog, "%s: vtfcallpack %F: %r<br>\n", sc->c->addr, &r->rx);
fprint(2, "fcallpack on %s: %r\n", sc->dir);
packetfree(p);
vtfcallclear(&r->rx);
return;
}
vtlog(VtServerLog, "<font size=-1>%T %s:</font> send packet %p (%F)<br>\n", sc->c->addr, p, &r->rx);
if(vtsend(sc->c, p) < 0)
fprint(2, "vtsend %F: %r\n", &r->rx);
scdecref(sc);
vtfcallclear(&r->tx);
vtfcallclear(&r->rx);
vtfree(r);
}
int
vtsrvhello(VtConn *z)
{
VtFcall tx, rx;
Packet *p;
if((p = vtrecv(z)) == nil)
return -1;
if(vtfcallunpack(&tx, p) < 0){
packetfree(p);
return -1;
}
packetfree(p);
if(tx.msgtype != VtThello){
vtfcallclear(&tx);
werrstr("bad packet type %d; want Thello %d", tx.msgtype, VtThello);
return -1;
}
if(tx.tag != 0){
vtfcallclear(&tx);
werrstr("bad tag in hello");
return -1;
}
if(strcmp(tx.version, z->version) != 0){
vtfcallclear(&tx);
werrstr("bad version in hello");
return -1;
}
vtfree(z->uid);
z->uid = tx.uid;
tx.uid = nil;
vtfcallclear(&tx);
memset(&rx, 0, sizeof rx);
rx.msgtype = VtRhello;
rx.tag = tx.tag;
rx.sid = "anonymous";
if((p = vtfcallpack(&rx)) == nil)
return -1;
if(vtsend(z, p) < 0)
return -1;
return 0;
}
