cwinfo/yggdrasil-go
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Fix bug in mask generation for outbound dials, change iface reader mutexes to read-only locks unless RW is needed

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This commit is contained in:
Neil Alexander 2019-04-22 11:49:47 +01:00
parent ccf03fd3b6
commit bbd1246f7b
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GPG Key ID: A02A2019A2BB0944
2 changed files with 19 additions and 13 deletions
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26
src/tuntap/tun.go
View File

@ -260,9 +260,9 @@ func (tun *TunAdapter) ifaceReader() error {
} }
dstNodeID, dstNodeIDMask = dstAddr.GetNodeIDandMask() dstNodeID, dstNodeIDMask = dstAddr.GetNodeIDandMask()
// Do we have an active connection for this node ID? // Do we have an active connection for this node ID?
tun.mutex.Lock() tun.mutex.RLock()
if conn, isIn := tun.conns[*dstNodeID]; isIn { if conn, isIn := tun.conns[*dstNodeID]; isIn {
tun.mutex.Unlock() tun.mutex.RUnlock()
w, err := conn.Write(bs[:n]) w, err := conn.Write(bs[:n])
if err != nil { if err != nil {
tun.log.Errorln("TUN/TAP conn write error:", err) tun.log.Errorln("TUN/TAP conn write error:", err)
@ -273,14 +273,20 @@ func (tun *TunAdapter) ifaceReader() error {
continue continue
} }
} else { } else {
if conn, err := tun.dialer.DialByNodeIDandMask(dstNodeID, dstNodeIDMask); err == nil { tun.mutex.RUnlock()
tun.conns[*dstNodeID] = &conn func() {
tun.mutex.Unlock() tun.mutex.Lock()
go tun.connReader(&conn) defer tun.mutex.Unlock()
} else { if conn, err := tun.dialer.DialByNodeIDandMask(dstNodeID, dstNodeIDMask); err == nil {
tun.mutex.Unlock() tun.log.Debugln("Opening new session connection")
tun.log.Errorln("TUN/TAP dial error:", err) tun.log.Debugln("Node:", dstNodeID)
} tun.log.Debugln("Mask:", dstNodeIDMask)
tun.conns[*dstNodeID] = &conn
go tun.connReader(&conn)
} else {
tun.log.Errorln("TUN/TAP dial error:", err)
}
}()
} }
/*if !r.cryptokey.isValidSource(srcAddr, addrlen) { /*if !r.cryptokey.isValidSource(srcAddr, addrlen) {

6
src/yggdrasil/dialer.go
View File

@ -35,7 +35,7 @@ func (d *Dialer) Dial(network, address string) (Conn, error) {
return Conn{}, err return Conn{}, err
} }
copy(nodeID[:], dest) copy(nodeID[:], dest)
for idx := 0; idx <= len; idx++ { for idx := 0; idx < len; idx++ {
nodeMask[idx/8] |= 0x80 >> byte(idx%8) nodeMask[idx/8] |= 0x80 >> byte(idx%8)
} }
} else { } else {
@ -65,8 +65,8 @@ func (d *Dialer) DialByNodeIDandMask(nodeID, nodeMask *crypto.NodeID) (Conn, err
nodeMask: nodeMask, nodeMask: nodeMask,
recv: make(chan *wire_trafficPacket, 32), recv: make(chan *wire_trafficPacket, 32),
} }
conn.core.router.doAdmin(func() { conn.core.router.admin <- func() {
conn.startSearch() conn.startSearch()
}) }
return conn, nil return conn, nil
} }