src/tx_test.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2022 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         "crypto/rand"
  23         "io"
  24         "io/ioutil"
  25         "os"
  26         "path"
  27         "testing"
  28         "testing/quick"
  29
  30         xdr "github.com/davecgh/go-xdr/xdr2"
  31 )
  32
  33 func TestTx(t *testing.T) {
  34         f := func(
  35                 hops uint8,
  36                 pathSrc string,
  37                 dataSize uint32,
  38                 nice, replyNice uint8,
  39                 minSize uint32,
  40         ) bool {
  41                 dataSize %= 1 << 20
  42                 data := make([]byte, dataSize)
  43                 if _, err := io.ReadFull(rand.Reader, data); err != nil {
  44                         panic(err)
  45                 }
  46                 minSize %= 1 << 20
  47                 if len(pathSrc) > int(MaxPathSize) {
  48                         pathSrc = pathSrc[:MaxPathSize]
  49                 }
  50                 hops = hops % 4
  51                 spool, err := ioutil.TempDir("", "testtx")
  52                 if err != nil {
  53                         panic(err)
  54                 }
  55                 defer os.RemoveAll(spool)
  56                 nodeOur, err := NewNodeGenerate()
  57                 if err != nil {
  58                         panic(err)
  59                 }
  60                 nodeTgtOur, err := NewNodeGenerate()
  61                 if err != nil {
  62                         panic(err)
  63                 }
  64                 nodeTgt := nodeTgtOur.Their()
  65                 ctx := Ctx{
  66                         Spool:   spool,
  67                         LogPath: path.Join(spool, "log.log"),
  68                         Debug:   true,
  69                         Self:    nodeOur,
  70                         SelfId:  nodeOur.Id,
  71                         Neigh:   make(map[NodeId]*Node, hops),
  72                         Alias:   make(map[string]*NodeId),
  73                 }
  74                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
  75                 ctx.Neigh[*nodeTgt.Id] = nodeTgt
  76                 privates := make(map[NodeId]*NodeOur, int(hops)+1)
  77                 privates[*nodeTgt.Id] = nodeTgtOur
  78                 privates[*nodeOur.Id] = nodeOur
  79                 for i := uint8(0); i < hops; i++ {
  80                         node, err := NewNodeGenerate()
  81                         if err != nil {
  82                                 panic(err)
  83                         }
  84                         ctx.Neigh[*node.Id] = node.Their()
  85                         privates[*node.Id] = node
  86                         nodeTgt.Via = append(nodeTgt.Via, node.Id)
  87                 }
  88                 pkt, err := NewPkt(PktTypeExec, replyNice, []byte(pathSrc))
  89                 src := bytes.NewReader(data)
  90                 dstNode, _, err := ctx.Tx(
  91                         nodeTgt,
  92                         pkt,
  93                         123,
  94                         int64(src.Len()),
  95                         int64(minSize),
  96                         MaxFileSize,
  97                         src,
  98                         "pktName",
  99                         nil,
 100                 )
 101                 if err != nil {
 102                         return false
 103                 }
 104
 105                 sentJobs := make([]Job, 0, 1)
 106                 for txJob := range ctx.Jobs(dstNode.Id, TTx) {
 107                         sentJobs = append(sentJobs, txJob)
 108                 }
 109                 if len(sentJobs) != 1 {
 110                         return false
 111                 }
 112                 txJob := sentJobs[0]
 113                 fd, err := os.Open(txJob.Path)
 114                 if err != nil {
 115                         panic(err)
 116                 }
 117                 defer fd.Close()
 118                 var bufR bytes.Buffer
 119                 if _, err = io.Copy(&bufR, fd); err != nil {
 120                         panic(err)
 121                 }
 122                 var bufW bytes.Buffer
 123                 vias := append(nodeTgt.Via, nodeTgt.Id)
 124                 for i, hopId := range vias {
 125                         hopOur := privates[*hopId]
 126                         _, foundNode, _, err := PktEncRead(
 127                                 hopOur, ctx.Neigh, &bufR, &bufW, true, nil,
 128                         )
 129                         if err != nil {
 130                                 return false
 131                         }
 132                         if *foundNode.Id != *nodeOur.Id {
 133                                 return false
 134                         }
 135                         bufR, bufW = bufW, bufR
 136                         bufW.Reset()
 137                         var pkt Pkt
 138                         if _, err = xdr.Unmarshal(&bufR, &pkt); err != nil {
 139                                 return false
 140                         }
 141                         if *hopId == *nodeTgt.Id {
 142                                 if pkt.Type != PktTypeExec {
 143                                         return false
 144                                 }
 145                                 if pkt.Nice != replyNice {
 146                                         return false
 147                                 }
 148                                 if !bytes.HasPrefix(pkt.Path[:], []byte(pathSrc)) {
 149                                         return false
 150                                 }
 151                                 if bytes.Compare(bufR.Bytes(), []byte(data)) != 0 {
 152                                         return false
 153                                 }
 154                         } else {
 155                                 if pkt.Type != PktTypeTrns {
 156                                         return false
 157                                 }
 158                                 if bytes.Compare(pkt.Path[:MTHSize], vias[i+1][:]) != 0 {
 159                                         return false
 160                                 }
 161                         }
 162                 }
 163                 return true
 164         }
 165         if err := quick.Check(f, nil); err != nil {
 166                 t.Error(err)
 167         }
 168 }