/*
NNCP -- Node to Node copy, utilities for store-and-forward data exchange
-Copyright (C) 2016-2017 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2016-2018 Sergey Matveev <stargrave@stargrave.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
PktTypeFile PktType = iota
PktTypeFreq PktType = iota
- PktTypeMail PktType = iota
+ PktTypeExec PktType = iota
PktTypeTrns PktType = iota
MaxPathSize = 1<<8 - 1
- DefaultNiceMail = 64
- DefaultNiceFreq = 64
- DefaultNiceFile = 196
-
NNCPBundlePrefix = "NNCP"
)
var (
- MagicNNCPPv1 [8]byte = [8]byte{'N', 'N', 'C', 'P', 'P', 0, 0, 1}
+ MagicNNCPPv2 [8]byte = [8]byte{'N', 'N', 'C', 'P', 'P', 0, 0, 2}
MagicNNCPEv3 [8]byte = [8]byte{'N', 'N', 'C', 'P', 'E', 0, 0, 3}
BadMagic error = errors.New("Unknown magic number")
BadPktType error = errors.New("Unknown packet type")
type Pkt struct {
Magic [8]byte
Type PktType
+ Nice uint8
PathLen uint8
Path *[MaxPathSize]byte
}
PktEncOverhead = int64(n)
}
-func NewPkt(typ PktType, path string) (*Pkt, error) {
- pb := []byte(path)
- if len(pb) > MaxPathSize {
+func NewPkt(typ PktType, nice uint8, path []byte) (*Pkt, error) {
+ if len(path) > MaxPathSize {
return nil, errors.New("Too long path")
}
pkt := Pkt{
- Magic: MagicNNCPPv1,
+ Magic: MagicNNCPPv2,
Type: typ,
- PathLen: uint8(len(pb)),
+ Nice: nice,
+ PathLen: uint8(len(path)),
Path: new([MaxPathSize]byte),
}
- copy(pkt.Path[:], pb)
+ copy(pkt.Path[:], path)
return &pkt, nil
}
return written, nil
}
-func PktEncWrite(our *NodeOur, their *Node, pkt *Pkt, nice uint8, size, padSize int64, data io.Reader, out io.Writer) error {
+func PktEncWrite(
+ our *NodeOur,
+ their *Node,
+ pkt *Pkt,
+ nice uint8,
+ size, padSize int64,
+ data io.Reader,
+ out io.Writer) error {
pubEph, prvEph, err := box.GenerateKey(rand.Reader)
if err != nil {
return err
if err != nil {
return err
}
- lr := io.LimitedReader{data, size}
+ lr := io.LimitedReader{R: data, N: size}
mr := io.MultiReader(&pktBuf, &lr)
mw := io.MultiWriter(out, mac)
fullSize := pktBuf.Len() + int(size)
if _, err = io.ReadFull(kdf, keyEnc[:]); err != nil {
return err
}
- lr = io.LimitedReader{DevZero{}, padSize}
+ lr = io.LimitedReader{R: DevZero{}, N: padSize}
written, err = ae(keyEnc, &lr, out)
if err != nil {
return err
return ed25519.Verify(their.SignPub, tbsBuf.Bytes(), pktEnc.Sign[:]), nil
}
-func PktEncRead(our *NodeOur, nodes map[NodeId]*Node, data io.Reader, out io.Writer) (*Node, int64, error) {
+func PktEncRead(
+ our *NodeOur,
+ nodes map[NodeId]*Node,
+ data io.Reader,
+ out io.Writer) (*Node, int64, error) {
var pktEnc PktEnc
_, err := xdr.Unmarshal(data, &pktEnc)
if err != nil {
}
fullSize := PktOverhead + size - 8 - 2*blake2b.Size256
- lr := io.LimitedReader{data, fullSize}
+ lr := io.LimitedReader{R: data, N: fullSize}
tr := io.TeeReader(&lr, mac)
written, err := ae(keyEnc, tr, out)
if err != nil {