src/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, 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         "fmt"
  24         "io"
  25         "io/ioutil"
  26         "os"
  27         "path/filepath"
  28         "strconv"
  29         "strings"
  30         "testing"
  31         "testing/quick"
  32
  33         xdr "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                                 strings.NewReader("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                                 MaxFileSize,
 203                                 1<<15,
 204                         ); err != nil {
 205                                 t.Error(err)
 206                                 return false
 207                         }
 208                 }
 209                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 210                 os.Rename(filepath.Join(spool, ctx.Self.Id.String(), string(TTx)), rxPath)
 211                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 212                 if len(dirFiles(rxPath)) == 0 {
 213                         return false
 214                 }
 215                 ctx.Neigh[*nodeOur.Id].Incoming = &incomingPath
 216                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 217                 if len(dirFiles(rxPath)) != 0 {
 218                         return false
 219                 }
 220                 for _, fileData := range files {
 221                         checksum := blake2b.Sum256(fileData)
 222                         fileName := ToBase32(checksum[:])
 223                         data, err := ioutil.ReadFile(filepath.Join(incomingPath, fileName))
 224                         if err != nil {
 225                                 panic(err)
 226                         }
 227                         if bytes.Compare(data, fileData) != 0 {
 228                                 return false
 229                         }
 230                 }
 231                 return true
 232         }
 233         if err := quick.Check(f, nil); err != nil {
 234                 t.Error(err)
 235         }
 236 }
 237
 238 func TestTossFileSameName(t *testing.T) {
 239         f := func(filesRaw uint8) bool {
 240                 files := int(filesRaw)%8 + 1
 241                 spool, err := ioutil.TempDir("", "testtoss")
 242                 if err != nil {
 243                         panic(err)
 244                 }
 245                 defer os.RemoveAll(spool)
 246                 nodeOur, err := NewNodeGenerate()
 247                 if err != nil {
 248                         t.Error(err)
 249                         return false
 250                 }
 251                 ctx := Ctx{
 252                         Spool:   spool,
 253                         Self:    nodeOur,
 254                         SelfId:  nodeOur.Id,
 255                         Neigh:   make(map[NodeId]*Node),
 256                         Alias:   make(map[string]*NodeId),
 257                         LogPath: filepath.Join(spool, "log.log"),
 258                         Debug:   TDebug,
 259                 }
 260                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 261                 srcPath := filepath.Join(spool, "junk")
 262                 if err = ioutil.WriteFile(
 263                         srcPath,
 264                         []byte("doesnotmatter"),
 265                         os.FileMode(0600),
 266                 ); err != nil {
 267                         t.Error(err)
 268                         return false
 269                 }
 270                 incomingPath := filepath.Join(spool, "incoming")
 271                 for i := 0; i < files; i++ {
 272                         if err := ctx.TxFile(
 273                                 ctx.Neigh[*nodeOur.Id],
 274                                 DefaultNiceFile,
 275                                 srcPath,
 276                                 "samefile",
 277                                 MaxFileSize,
 278                                 1<<15,
 279                         ); err != nil {
 280                                 t.Error(err)
 281                                 return false
 282                         }
 283                 }
 284                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 285                 os.Rename(filepath.Join(spool, ctx.Self.Id.String(), string(TTx)), rxPath)
 286                 ctx.Neigh[*nodeOur.Id].Incoming = &incomingPath
 287                 ctx.Toss(ctx.Self.Id, DefaultNiceFile, false, false, false, false, false, false)
 288                 expected := make(map[string]struct{})
 289                 expected["samefile"] = struct{}{}
 290                 for i := 0; i < files-1; i++ {
 291                         expected["samefile."+strconv.Itoa(i)] = struct{}{}
 292                 }
 293                 for _, filename := range dirFiles(incomingPath) {
 294                         if _, exists := expected[filename]; !exists {
 295                                 return false
 296                         }
 297                         delete(expected, filename)
 298                 }
 299                 if len(expected) != 0 {
 300                         return false
 301                 }
 302                 return true
 303         }
 304         if err := quick.Check(f, nil); err != nil {
 305                 t.Error(err)
 306         }
 307 }
 308
 309 func TestTossFreq(t *testing.T) {
 310         f := func(fileSizes []uint8, replyNice uint8) bool {
 311                 if len(fileSizes) == 0 {
 312                         return true
 313                 }
 314                 spool, err := ioutil.TempDir("", "testtoss")
 315                 if err != nil {
 316                         panic(err)
 317                 }
 318                 defer os.RemoveAll(spool)
 319                 nodeOur, err := NewNodeGenerate()
 320                 if err != nil {
 321                         t.Error(err)
 322                         return false
 323                 }
 324                 ctx := Ctx{
 325                         Spool:   spool,
 326                         Self:    nodeOur,
 327                         SelfId:  nodeOur.Id,
 328                         Neigh:   make(map[NodeId]*Node),
 329                         Alias:   make(map[string]*NodeId),
 330                         LogPath: filepath.Join(spool, "log.log"),
 331                         Debug:   TDebug,
 332                 }
 333                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 334                 files := make(map[string][]byte)
 335                 for i, fileSize := range fileSizes {
 336                         fileData := make([]byte, fileSize)
 337                         if _, err := io.ReadFull(rand.Reader, fileData); err != nil {
 338                                 panic(err)
 339                         }
 340                         fileName := strconv.Itoa(i)
 341                         files[fileName] = fileData
 342                         if err := ctx.TxFreq(
 343                                 ctx.Neigh[*nodeOur.Id],
 344                                 DefaultNiceFreq,
 345                                 replyNice,
 346                                 fileName,
 347                                 fileName,
 348                                 1<<15,
 349                         ); err != nil {
 350                                 t.Error(err)
 351                                 return false
 352                         }
 353                 }
 354                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 355                 txPath := filepath.Join(spool, ctx.Self.Id.String(), string(TTx))
 356                 os.Rename(txPath, rxPath)
 357                 os.MkdirAll(txPath, os.FileMode(0700))
 358                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 359                 if len(dirFiles(txPath)) != 0 || len(dirFiles(rxPath)) == 0 {
 360                         return false
 361                 }
 362                 ctx.Neigh[*nodeOur.Id].FreqPath = &spool
 363                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 364                 if len(dirFiles(txPath)) != 0 || len(dirFiles(rxPath)) == 0 {
 365                         return false
 366                 }
 367                 for fileName, fileData := range files {
 368                         if err := ioutil.WriteFile(
 369                                 filepath.Join(spool, fileName),
 370                                 fileData,
 371                                 os.FileMode(0600),
 372                         ); err != nil {
 373                                 panic(err)
 374                         }
 375                 }
 376                 ctx.Toss(ctx.Self.Id, DefaultNiceFreq, false, false, false, false, false, false)
 377                 if len(dirFiles(txPath)) == 0 || len(dirFiles(rxPath)) != 0 {
 378                         return false
 379                 }
 380                 for job := range ctx.Jobs(ctx.Self.Id, TTx) {
 381                         var buf bytes.Buffer
 382                         _, _, err := PktEncRead(ctx.Self, ctx.Neigh, job.Fd, &buf)
 383                         if err != nil {
 384                                 t.Error(err)
 385                                 return false
 386                         }
 387                         var pkt Pkt
 388                         if _, err = xdr.Unmarshal(&buf, &pkt); err != nil {
 389                                 t.Error(err)
 390                                 return false
 391                         }
 392                         if pkt.Nice != replyNice {
 393                                 return false
 394                         }
 395                         dst := string(pkt.Path[:int(pkt.PathLen)])
 396                         if bytes.Compare(buf.Bytes(), files[dst]) != 0 {
 397                                 return false
 398                         }
 399                 }
 400                 return true
 401         }
 402         if err := quick.Check(f, nil); err != nil {
 403                 t.Error(err)
 404         }
 405 }
 406
 407 func TestTossTrns(t *testing.T) {
 408         f := func(datumLens []uint8) bool {
 409                 if len(datumLens) == 0 {
 410                         return true
 411                 }
 412                 datum := make(map[int][]byte)
 413                 for i, datumLen := range datumLens {
 414                         datumLen += 64
 415                         data := make([]byte, datumLen)
 416                         if _, err := io.ReadFull(rand.Reader, data); err != nil {
 417                                 panic(err)
 418                         }
 419                         datum[i] = data
 420                 }
 421                 spool, err := ioutil.TempDir("", "testtoss")
 422                 if err != nil {
 423                         panic(err)
 424                 }
 425                 defer os.RemoveAll(spool)
 426                 nodeOur, err := NewNodeGenerate()
 427                 if err != nil {
 428                         t.Error(err)
 429                         return false
 430                 }
 431                 ctx := Ctx{
 432                         Spool:   spool,
 433                         Self:    nodeOur,
 434                         SelfId:  nodeOur.Id,
 435                         Neigh:   make(map[NodeId]*Node),
 436                         Alias:   make(map[string]*NodeId),
 437                         LogPath: filepath.Join(spool, "log.log"),
 438                         Debug:   TDebug,
 439                 }
 440                 ctx.Neigh[*nodeOur.Id] = nodeOur.Their()
 441                 rxPath := filepath.Join(spool, ctx.Self.Id.String(), string(TRx))
 442                 os.MkdirAll(rxPath, os.FileMode(0700))
 443                 txPath := filepath.Join(spool, ctx.Self.Id.String(), string(TTx))
 444                 os.MkdirAll(txPath, os.FileMode(0700))
 445                 for _, data := range datum {
 446                         pktTrans := Pkt{
 447                                 Magic:   MagicNNCPPv3,
 448                                 Type:    PktTypeTrns,
 449                                 PathLen: blake2b.Size256,
 450                                 Path:    new([MaxPathSize]byte),
 451                         }
 452                         copy(pktTrans.Path[:], nodeOur.Id[:])
 453                         var dst bytes.Buffer
 454                         if err := PktEncWrite(
 455                                 ctx.Self,
 456                                 ctx.Neigh[*nodeOur.Id],
 457                                 &pktTrans,
 458                                 123,
 459                                 int64(len(data)),
 460                                 0,
 461                                 bytes.NewReader(data),
 462                                 &dst,
 463                         ); err != nil {
 464                                 t.Error(err)
 465                                 return false
 466                         }
 467                         checksum := blake2b.Sum256(dst.Bytes())
 468                         if err := ioutil.WriteFile(
 469                                 filepath.Join(rxPath, ToBase32(checksum[:])),
 470                                 dst.Bytes(),
 471                                 os.FileMode(0600),
 472                         ); err != nil {
 473                                 panic(err)
 474                         }
 475                 }
 476                 ctx.Toss(ctx.Self.Id, 123, false, false, false, false, false, false)
 477                 if len(dirFiles(rxPath)) != 0 {
 478                         return false
 479                 }
 480                 for _, filename := range dirFiles(txPath) {
 481                         dataRead, err := ioutil.ReadFile(filepath.Join(txPath, filename))
 482                         if err != nil {
 483                                 panic(err)
 484                         }
 485                         for k, data := range datum {
 486                                 if bytes.Compare(dataRead, data) == 0 {
 487                                         delete(datum, k)
 488                                 }
 489                         }
 490                 }
 491                 if len(datum) > 0 {
 492                         return false
 493                 }
 494                 return true
 495         }
 496         if err := quick.Check(f, nil); err != nil {
 497                 t.Error(err)
 498         }
 499 }