src/cypherpunks.ru/nncp/toss_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         "crypto/rand"
  24         "fmt"
  25         "io"
  26         "io/ioutil"
  27         "os"
  28         "path/filepath"
  29         "strconv"
  30         "testing"
  31         "testing/quick"
  32
  33         "github.com/davecgh/go-xdr/xdr2"
  34         "golang.org/x/crypto/blake2b"
  35 )
  36
  37 var (
  38         TDebug bool = false
  39 )
  40
  41 func dirFiles(path string) []string {
  42         dir, err := os.Open(path)
  43         if err != nil {
  44                 panic(err)
  45         }
  46         defer dir.Close()
  47         names, err := dir.Readdirnames(0)
  48         if err != nil {
  49                 panic(err)
  50         }
  51         return names
  52 }
  53
  54 func TestTossExec(t *testing.T) {
  55         f := func(replyNice uint8, handleRaw uint32, recipients [16]uint8) bool {
  56                 handle := strconv.Itoa(int(handleRaw))
  57                 for i, recipient := range recipients {
  58                         recipients[i] = recipient % 8
  59                 }
  60                 spool, err := ioutil.TempDir("", "testtoss")
  61                 if err != nil {
  62                         panic(err)
  63                 }
  64                 defer os.RemoveAll(spool)
  65                 nodeOur, err := NewNodeGenerate()
  66                 if err != nil {
  67                         t.Error(err)
  68                         return false
  69                 }
  70                 ctx := Ctx{
  71                         Spool:   spool,
  72                         Self:    nodeOur,
  73                         SelfId:  nodeOur.Id,
  74                         Neigh:   make(map[NodeId]*Node),
  75                         Alias:   make(map[string]*NodeId),
  76                         LogPath: filepath.Join(spool, "log.log"),
  77                         Debug:   TDebug,
  78                 }
  79                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
  80                 privates := make(map[uint8]*NodeOur)
  81                 for _, recipient := range recipients {
  82                         if _, exists := privates[recipient]; exists {
  83                                 continue
  84                         }
  85                         our, err := NewNodeGenerate()
  86                         if err != nil {
  87                                 t.Error(err)
  88                                 return false
  89                         }
  90                         privates[recipient] = our
  91                         ctx.Neigh[*our.Id] = our.Their()
  92                 }
  93                 for _, recipient := range recipients {
  94                         if err := ctx.TxExec(
  95                                 ctx.Neigh[*privates[recipient].Id],
  96                                 DefaultNiceExec,
  97                                 replyNice,
  98                                 handle,
  99                                 []string{"arg0", "arg1"},
 100                                 []byte("BODY\n"),
 101                                 1<<15,
 102                         ); err != nil {
 103                                 t.Error(err)
 104                                 return false
 105                         }
 106                 }
 107                 for _, recipient := range recipients {
 108                         ctx.Self = privates[recipient]
 109                         rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 110                         os.Rename(filepath.Join(spool, ctx.Self.Id.String(), string(TTx)), rxPath)
 111                         if len(dirFiles(rxPath)) == 0 {
 112                                 continue
 113                         }
 114                         ctx.Toss(ctx.Self.Id, DefaultNiceExec-1, false, false, false, false, false, false)
 115                         if len(dirFiles(rxPath)) == 0 {
 116                                 return false
 117                         }
 118                         ctx.Neigh[*nodeOur.Id].Exec = make(map[string][]string)
 119                         ctx.Neigh[*nodeOur.Id].Exec[handle] = []string{"/bin/sh", "-c", "false"}
 120                         ctx.Toss(ctx.Self.Id, DefaultNiceExec, false, false, false, false, false, false)
 121                         if len(dirFiles(rxPath)) == 0 {
 122                                 return false
 123                         }
 124                         ctx.Neigh[*nodeOur.Id].Exec[handle] = []string{
 125                                 "/bin/sh", "-c",
 126                                 fmt.Sprintf(
 127                                         "echo $NNCP_NICE $0 $1 >> %s ; cat >> %s",
 128                                         filepath.Join(spool, "mbox"),
 129                                         filepath.Join(spool, "mbox"),
 130                                 ),
 131                         }
 132                         ctx.Toss(ctx.Self.Id, DefaultNiceExec, false, false, false, false, false, false)
 133                         if len(dirFiles(rxPath)) != 0 {
 134                                 return false
 135                         }
 136                 }
 137                 mbox, err := ioutil.ReadFile(filepath.Join(spool, "mbox"))
 138                 if err != nil {
 139                         return false
 140                 }
 141                 expected := make([]byte, 0, 16)
 142                 for i := 0; i < 16; i++ {
 143                         expected = append(
 144                                 expected,
 145                                 []byte(fmt.Sprintf("%d arg0 arg1\n", replyNice))...,
 146                         )
 147                         expected = append(expected, []byte("BODY\n")...)
 148                 }
 149                 return bytes.Compare(mbox, expected) == 0
 150         }
 151         if err := quick.Check(f, nil); err != nil {
 152                 t.Error(err)
 153         }
 154 }
 155
 156 func TestTossFile(t *testing.T) {
 157         f := func(fileSizes []uint8) bool {
 158                 if len(fileSizes) == 0 {
 159                         return true
 160                 }
 161                 files := make(map[string][]byte)
 162                 for i, fileSize := range fileSizes {
 163                         data := make([]byte, fileSize)
 164                         if _, err := io.ReadFull(rand.Reader, data); err != nil {
 165                                 panic(err)
 166                         }
 167                         files[strconv.Itoa(i)] = data
 168                 }
 169                 spool, err := ioutil.TempDir("", "testtoss")
 170                 if err != nil {
 171                         panic(err)
 172                 }
 173                 defer os.RemoveAll(spool)
 174                 nodeOur, err := NewNodeGenerate()
 175                 if err != nil {
 176                         t.Error(err)
 177                         return false
 178                 }
 179                 ctx := Ctx{
 180                         Spool:   spool,
 181                         Self:    nodeOur,
 182                         SelfId:  nodeOur.Id,
 183                         Neigh:   make(map[NodeId]*Node),
 184                         Alias:   make(map[string]*NodeId),
 185                         LogPath: filepath.Join(spool, "log.log"),
 186                         Debug:   TDebug,
 187                 }
 188                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 189                 incomingPath := filepath.Join(spool, "incoming")
 190                 for _, fileData := range files {
 191                         checksum := blake2b.Sum256(fileData)
 192                         fileName := ToBase32(checksum[:])
 193                         src := filepath.Join(spool, fileName)
 194                         if err := ioutil.WriteFile(src, fileData, os.FileMode(0600)); err != nil {
 195                                 panic(err)
 196                         }
 197                         if err := ctx.TxFile(
 198                                 ctx.Neigh[*nodeOur.Id],
 199                                 DefaultNiceFile,
 200                                 src,
 201                                 fileName,
 202                                 1<<15,
 203                         ); err != nil {
 204                                 t.Error(err)
 205                                 return false
 206                         }
 207                 }
 208                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 209                 os.Rename(filepath.Join(spool, ctx.Self.Id.String(), string(TTx)), rxPath)
 210                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 211                 if len(dirFiles(rxPath)) == 0 {
 212                         return false
 213                 }
 214                 ctx.Neigh[*nodeOur.Id].Incoming = &incomingPath
 215                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 216                 if len(dirFiles(rxPath)) != 0 {
 217                         return false
 218                 }
 219                 for _, fileData := range files {
 220                         checksum := blake2b.Sum256(fileData)
 221                         fileName := ToBase32(checksum[:])
 222                         data, err := ioutil.ReadFile(filepath.Join(incomingPath, fileName))
 223                         if err != nil {
 224                                 panic(err)
 225                         }
 226                         if bytes.Compare(data, fileData) != 0 {
 227                                 return false
 228                         }
 229                 }
 230                 return true
 231         }
 232         if err := quick.Check(f, nil); err != nil {
 233                 t.Error(err)
 234         }
 235 }
 236
 237 func TestTossFileSameName(t *testing.T) {
 238         f := func(filesRaw uint8) bool {
 239                 files := int(filesRaw)%8 + 1
 240                 spool, err := ioutil.TempDir("", "testtoss")
 241                 if err != nil {
 242                         panic(err)
 243                 }
 244                 defer os.RemoveAll(spool)
 245                 nodeOur, err := NewNodeGenerate()
 246                 if err != nil {
 247                         t.Error(err)
 248                         return false
 249                 }
 250                 ctx := Ctx{
 251                         Spool:   spool,
 252                         Self:    nodeOur,
 253                         SelfId:  nodeOur.Id,
 254                         Neigh:   make(map[NodeId]*Node),
 255                         Alias:   make(map[string]*NodeId),
 256                         LogPath: filepath.Join(spool, "log.log"),
 257                         Debug:   TDebug,
 258                 }
 259                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 260                 srcPath := filepath.Join(spool, "junk")
 261                 if err = ioutil.WriteFile(
 262                         srcPath,
 263                         []byte("doesnotmatter"),
 264                         os.FileMode(0600),
 265                 ); err != nil {
 266                         t.Error(err)
 267                         return false
 268                 }
 269                 incomingPath := filepath.Join(spool, "incoming")
 270                 for i := 0; i < files; i++ {
 271                         if err := ctx.TxFile(
 272                                 ctx.Neigh[*nodeOur.Id],
 273                                 DefaultNiceFile,
 274                                 srcPath,
 275                                 "samefile",
 276                                 1<<15,
 277                         ); err != nil {
 278                                 t.Error(err)
 279                                 return false
 280                         }
 281                 }
 282                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 283                 os.Rename(filepath.Join(spool, ctx.Self.Id.String(), string(TTx)), rxPath)
 284                 ctx.Neigh[*nodeOur.Id].Incoming = &incomingPath
 285                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 286                 expected := make(map[string]struct{})
 287                 expected["samefile"] = struct{}{}
 288                 for i := 0; i < files-1; i++ {
 289                         expected["samefile"+strconv.Itoa(i)] = struct{}{}
 290                 }
 291                 for _, filename := range dirFiles(incomingPath) {
 292                         if _, exists := expected[filename]; !exists {
 293                                 return false
 294                         }
 295                         delete(expected, filename)
 296                 }
 297                 if len(expected) != 0 {
 298                         return false
 299                 }
 300                 return true
 301         }
 302         if err := quick.Check(f, nil); err != nil {
 303                 t.Error(err)
 304         }
 305 }
 306
 307 func TestTossFreq(t *testing.T) {
 308         f := func(fileSizes []uint8, replyNice uint8) bool {
 309                 if len(fileSizes) == 0 {
 310                         return true
 311                 }
 312                 spool, err := ioutil.TempDir("", "testtoss")
 313                 if err != nil {
 314                         panic(err)
 315                 }
 316                 defer os.RemoveAll(spool)
 317                 nodeOur, err := NewNodeGenerate()
 318                 if err != nil {
 319                         t.Error(err)
 320                         return false
 321                 }
 322                 ctx := Ctx{
 323                         Spool:   spool,
 324                         Self:    nodeOur,
 325                         SelfId:  nodeOur.Id,
 326                         Neigh:   make(map[NodeId]*Node),
 327                         Alias:   make(map[string]*NodeId),
 328                         LogPath: filepath.Join(spool, "log.log"),
 329                         Debug:   TDebug,
 330                 }
 331                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 332                 files := make(map[string][]byte)
 333                 for i, fileSize := range fileSizes {
 334                         fileData := make([]byte, fileSize)
 335                         if _, err := io.ReadFull(rand.Reader, fileData); err != nil {
 336                                 panic(err)
 337                         }
 338                         fileName := strconv.Itoa(i)
 339                         files[fileName] = fileData
 340                         if err := ctx.TxFreq(
 341                                 ctx.Neigh[*nodeOur.Id],
 342                                 DefaultNiceFreq,
 343                                 replyNice,
 344                                 fileName,
 345                                 fileName,
 346                                 1<<15,
 347                         ); err != nil {
 348                                 t.Error(err)
 349                                 return false
 350                         }
 351                 }
 352                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 353                 txPath := filepath.Join(spool, ctx.Self.Id.String(), string(TTx))
 354                 os.Rename(txPath, rxPath)
 355                 os.MkdirAll(txPath, os.FileMode(0700))
 356                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 357                 if len(dirFiles(txPath)) != 0 || len(dirFiles(rxPath)) == 0 {
 358                         return false
 359                 }
 360                 ctx.Neigh[*nodeOur.Id].Freq = &spool
 361                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 362                 if len(dirFiles(txPath)) != 0 || len(dirFiles(rxPath)) == 0 {
 363                         return false
 364                 }
 365                 for fileName, fileData := range files {
 366                         if err := ioutil.WriteFile(
 367                                 filepath.Join(spool, fileName),
 368                                 fileData,
 369                                 os.FileMode(0600),
 370                         ); err != nil {
 371                                 panic(err)
 372                         }
 373                 }
 374                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 375                 if len(dirFiles(txPath)) == 0 || len(dirFiles(rxPath)) != 0 {
 376                         return false
 377                 }
 378                 for job := range ctx.Jobs(ctx.Self.Id, TTx) {
 379                         var buf bytes.Buffer
 380                         _, _, err := PktEncRead(ctx.Self, ctx.Neigh, job.Fd, &buf)
 381                         if err != nil {
 382                                 t.Error(err)
 383                                 return false
 384                         }
 385                         var pkt Pkt
 386                         if _, err = xdr.Unmarshal(&buf, &pkt); err != nil {
 387                                 t.Error(err)
 388                                 return false
 389                         }
 390                         if pkt.Nice != replyNice {
 391                                 return false
 392                         }
 393                         dst := string(pkt.Path[:int(pkt.PathLen)])
 394                         if bytes.Compare(buf.Bytes(), files[dst]) != 0 {
 395                                 return false
 396                         }
 397                 }
 398                 return true
 399         }
 400         if err := quick.Check(f, nil); err != nil {
 401                 t.Error(err)
 402         }
 403 }
 404
 405 func TestTossTrns(t *testing.T) {
 406         f := func(datumLens []uint8) bool {
 407                 if len(datumLens) == 0 {
 408                         return true
 409                 }
 410                 datum := make(map[int][]byte)
 411                 for i, datumLen := range datumLens {
 412                         datumLen += 64
 413                         data := make([]byte, datumLen)
 414                         if _, err := io.ReadFull(rand.Reader, data); err != nil {
 415                                 panic(err)
 416                         }
 417                         datum[i] = data
 418                 }
 419                 spool, err := ioutil.TempDir("", "testtoss")
 420                 if err != nil {
 421                         panic(err)
 422                 }
 423                 defer os.RemoveAll(spool)
 424                 nodeOur, err := NewNodeGenerate()
 425                 if err != nil {
 426                         t.Error(err)
 427                         return false
 428                 }
 429                 ctx := Ctx{
 430                         Spool:   spool,
 431                         Self:    nodeOur,
 432                         SelfId:  nodeOur.Id,
 433                         Neigh:   make(map[NodeId]*Node),
 434                         Alias:   make(map[string]*NodeId),
 435                         LogPath: filepath.Join(spool, "log.log"),
 436                         Debug:   TDebug,
 437                 }
 438                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 439                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 440                 os.MkdirAll(rxPath, os.FileMode(0700))
 441                 txPath := filepath.Join(spool, ctx.Self.Id.String(), string(TTx))
 442                 os.MkdirAll(txPath, os.FileMode(0700))
 443                 for _, data := range datum {
 444                         pktTrans := Pkt{
 445                                 Magic:   MagicNNCPPv2,
 446                                 Type:    PktTypeTrns,
 447                                 PathLen: blake2b.Size256,
 448                                 Path:    new([MaxPathSize]byte),
 449                         }
 450                         copy(pktTrans.Path[:], nodeOur.Id[:])
 451                         var dst bytes.Buffer
 452                         if err := PktEncWrite(
 453                                 ctx.Self,
 454                                 ctx.Neigh[*nodeOur.Id],
 455                                 &pktTrans,
 456                                 123,
 457                                 int64(len(data)),
 458                                 0,
 459                                 bytes.NewReader(data),
 460                                 &dst,
 461                         ); err != nil {
 462                                 t.Error(err)
 463                                 return false
 464                         }
 465                         checksum := blake2b.Sum256(dst.Bytes())
 466                         if err := ioutil.WriteFile(
 467                                 filepath.Join(rxPath, ToBase32(checksum[:])),
 468                                 dst.Bytes(),
 469                                 os.FileMode(0600),
 470                         ); err != nil {
 471                                 panic(err)
 472                         }
 473                 }
 474                 ctx.Toss(ctx.Self.Id, 123, false, false, false, false, false, false)
 475                 if len(dirFiles(rxPath)) != 0 {
 476                         return false
 477                 }
 478                 for _, filename := range dirFiles(txPath) {
 479                         dataRead, err := ioutil.ReadFile(filepath.Join(txPath, filename))
 480                         if err != nil {
 481                                 panic(err)
 482                         }
 483                         for k, data := range datum {
 484                                 if bytes.Compare(dataRead, data) == 0 {
 485                                         delete(datum, k)
 486                                 }
 487                         }
 488                 }
 489                 if len(datum) > 0 {
 490                         return false
 491                 }
 492                 return true
 493         }
 494         if err := quick.Check(f, nil); err != nil {
 495                 t.Error(err)
 496         }
 497 }