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; }