src/cypherpunks.ru/nncp/tx_test.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2019 Sergey Matveev <stargrave@stargrave.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 package nncp
  20
  21 import (
  22         "bytes"
  23         "io"
  24         "io/ioutil"
  25         "os"
  26         "path"
  27         "strings"
  28         "testing"
  29         "testing/quick"
  30
  31         "github.com/davecgh/go-xdr/xdr2"
  32         "golang.org/x/crypto/blake2b"
  33 )
  34
  35 func TestTx(t *testing.T) {
  36         f := func(hops uint8, pathSrc, data string, nice, replyNice uint8, padSize int16) bool {
  37                 if len(pathSrc) > int(MaxPathSize) {
  38                         pathSrc = pathSrc[:MaxPathSize]
  39                 }
  40                 hops = hops % 4
  41                 hops = 1
  42                 spool, err := ioutil.TempDir("", "testtx")
  43                 if err != nil {
  44                         panic(err)
  45                 }
  46                 defer os.RemoveAll(spool)
  47                 nodeOur, err := NewNodeGenerate()
  48                 if err != nil {
  49                         panic(err)
  50                 }
  51                 nodeTgtOur, err := NewNodeGenerate()
  52                 if err != nil {
  53                         panic(err)
  54                 }
  55                 nodeTgt := nodeTgtOur.Their()
  56                 ctx := Ctx{
  57                         Spool:   spool,
  58                         LogPath: path.Join(spool, "log.log"),
  59                         Debug:   true,
  60                         Self:    nodeOur,
  61                         SelfId:  nodeOur.Id,
  62                         Neigh:   make(map[NodeId]*Node, hops),
  63                         Alias:   make(map[string]*NodeId),
  64                 }
  65                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
  66                 ctx.Neigh[*nodeTgt.Id] = nodeTgt
  67                 privates := make(map[NodeId]*NodeOur, int(hops)+1)
  68                 privates[*nodeTgt.Id] = nodeTgtOur
  69                 privates[*nodeOur.Id] = nodeOur
  70                 for i := uint8(0); i < hops; i++ {
  71                         node, err := NewNodeGenerate()
  72                         if err != nil {
  73                                 panic(err)
  74                         }
  75                         ctx.Neigh[*node.Id] = node.Their()
  76                         privates[*node.Id] = node
  77                         nodeTgt.Via = append(nodeTgt.Via, node.Id)
  78                 }
  79                 pkt, err := NewPkt(PktTypeExec, replyNice, []byte(pathSrc))
  80                 src := strings.NewReader(data)
  81                 dstNode, err := ctx.Tx(
  82                         nodeTgt,
  83                         pkt,
  84                         123,
  85                         int64(src.Len()),
  86                         int64(padSize),
  87                         src,
  88                 )
  89                 if err != nil {
  90                         return false
  91                 }
  92
  93                 sentJobs := make([]Job, 0, 1)
  94                 for txJob := range ctx.Jobs(dstNode.Id, TTx) {
  95                         sentJobs = append(sentJobs, txJob)
  96                 }
  97                 if len(sentJobs) != 1 {
  98                         return false
  99                 }
 100                 txJob := sentJobs[0]
 101                 defer txJob.Fd.Close()
 102                 var bufR bytes.Buffer
 103                 if _, err = io.Copy(&bufR, txJob.Fd); err != nil {
 104                         panic(err)
 105                 }
 106                 var bufW bytes.Buffer
 107                 vias := append(nodeTgt.Via, nodeTgt.Id)
 108                 for i, hopId := range vias {
 109                         hopOur := privates[*hopId]
 110                         foundNode, _, err := PktEncRead(hopOur, ctx.Neigh, &bufR, &bufW)
 111                         if err != nil {
 112                                 return false
 113                         }
 114                         if *foundNode.Id != *nodeOur.Id {
 115                                 return false
 116                         }
 117                         bufR, bufW = bufW, bufR
 118                         bufW.Reset()
 119                         var pkt Pkt
 120                         if _, err = xdr.Unmarshal(&bufR, &pkt); err != nil {
 121                                 return false
 122                         }
 123                         if *hopId == *nodeTgt.Id {
 124                                 if pkt.Type != PktTypeExec {
 125                                         return false
 126                                 }
 127                                 if pkt.Nice != replyNice {
 128                                         return false
 129                                 }
 130                                 if !bytes.HasPrefix(pkt.Path[:], []byte(pathSrc)) {
 131                                         return false
 132                                 }
 133                                 if bytes.Compare(bufR.Bytes(), []byte(data)) != 0 {
 134                                         return false
 135                                 }
 136                         } else {
 137                                 if pkt.Type != PktTypeTrns {
 138                                         return false
 139                                 }
 140                                 if bytes.Compare(pkt.Path[:blake2b.Size256], vias[i+1][:]) != 0 {
 141                                         return false
 142                                 }
 143                         }
 144                 }
 145                 return true
 146         }
 147         if err := quick.Check(f, nil); err != nil {
 148                 t.Error(err)
 149         }
 150 }