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