File: skstream.cpp

package info (click to toggle)
skstream 0.3.9-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, buster, sid
  • size: 1,896 kB
  • sloc: sh: 10,997; cpp: 2,605; makefile: 64
file content (1307 lines) | stat: -rw-r--r-- 32,360 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
/**************************************************************************
 FreeSockets - Portable C++ classes for IP(sockets) applications. (v0.3)
 Copyright (C) 2000-2001 Rafael Guterres Jeffman
           (C) 2002-2006 Alistair Riddoch

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

**************************************************************************/

/**
 * This software package has been extensively modified by members of the
 * Worldforge Project. See the file ChangeLog for details.
 *
 * $Id$
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H

#include <skstream/skstream.h>

#include <skstream/skaddress.h>

#ifndef _WIN32
#include <fcntl.h>
#include <sys/types.h>
#include <netdb.h>
#include <errno.h>
#endif // _WIN32

#include <cstdio>
#include <cstring>
#include <cassert>

#ifdef _WIN32
#define SHUT_RD SD_RECEIVE
#define SHUT_WR SD_SEND
#define SHUT_RDWR SD_BOTH
#endif

// This would be using, but streambuf is a class, not a namespace
typedef std::streambuf::int_type int_type;

static inline int getSystemError()
{
  #ifdef _WIN32
    return WSAGetLastError();
  #else
    return errno;
  #endif
}

#ifndef HAVE_CLOSESOCKET
static inline int closesocket(SOCKET_TYPE sock)
{
    return ::close(sock);
}
#endif // HAVE_CLOSESOCKET

#ifndef HAVE_GAI_STRERROR
const char * skstream_gai_strerror(int errcode)
{
    switch (errcode) {
#ifdef EAI_BADFLAGS
      case EAI_BADFLAGS:
        return "Invalid value for `ai_flags' field.";
#endif
#ifdef EAI_NONAME
      case EAI_NONAME:
        return "NAME or SERVICE is unknown.";
#endif
#ifdef EAI_AGAIN
      case EAI_AGAIN:
        return "Temporary failure in name resolution.";
#endif
#ifdef EAI_FAIL
      case EAI_FAIL:
        return "Non-recoverable failure in name res.";
#endif
#ifdef EAI_NODATA
      case EAI_NODATA:
        return "No address associated with NAME.";
#endif
#ifdef EAI_FAMILY
      case EAI_FAMILY:
        return "`ai_family' not supported.";
#endif
#ifdef EAI_SOCKTYPE
      case EAI_SOCKTYPE:
        return "`ai_socktype' not supported.";
#endif
#ifdef EAI_SERVICE
      case EAI_SERVICE:
        return "SERVICE not supported for `ai_socktype'.";
#endif
#ifdef EAI_ADDRFAMILY
      case EAI_ADDRFAMILY:
        return "Address family for NAME not supported.";
#endif
#ifdef EAI_MEMORY
      case EAI_MEMORY:
        return "Memory allocation failure.";
#endif
#ifdef EAI_SYSTEM
      case EAI_SYSTEM:
        return "System error returned in `errno'.";
#endif
#ifdef EAI_OVERFLOW
      case EAI_OVERFLOW:
        return "Argument buffer overflow.";
#endif
      default:
        return "Unknown error.";
    }
}

static const char * gai_strerror(int errcode)
{
    return skstream_gai_strerror(errcode);
}
#endif // HAVE_GAI_STRERROR

/////////////////////////////////////////////////////////////////////////////
// class socketbuf implementation
/////////////////////////////////////////////////////////////////////////////
// Constructor
socketbuf::socketbuf(SOCKET_TYPE sock, std::streamsize insize,
                                       std::streamsize outsize)
    : _buffer(0), _socket(sock), Timeout(false)
{
  // allocate 16k buffer each for input and output
  const std::streamsize bufsize = insize + outsize;
  // Allocate a new buffer
  std::streambuf::char_type * buffer = new std::streambuf::char_type[bufsize];
  ::memset(buffer,0,bufsize);
  // Setup the buffer
  setbuf(buffer, bufsize);

  _underflow_timeout.tv_sec  = 0;
  _underflow_timeout.tv_usec = 0;

  _overflow_timeout.tv_sec  = 0;
  _overflow_timeout.tv_usec = 0;

  setSocket(sock);
}

// Constructor
socketbuf::socketbuf(SOCKET_TYPE sock, std::streambuf::char_type * buf,
                                       std::streamsize length)
    : _buffer(0), _socket(sock), Timeout(false)
{
  setbuf(buf, length);

  _underflow_timeout.tv_sec  = 0;
  _underflow_timeout.tv_usec = 0;

  _overflow_timeout.tv_sec  = 0;
  _overflow_timeout.tv_usec = 0;

  setSocket(sock);
}

// Destructor
socketbuf::~socketbuf()
{
  delete [] _buffer;
  if(_socket != INVALID_SOCKET){
    ::closesocket(_socket);
  }
}

void socketbuf::setSocket(SOCKET_TYPE sock)
{
  _socket = sock;
}


int socketbuf::sync()
{
    if(overflow() == traits_type::eof())
      return traits_type::eof();         // ios will set the fail bit
    else {
// This appeared to be causing the stream to lose data.
//      // empty put and get areas
//      setp(pbase(), epptr());
//      setg(eback(), egptr(), egptr());
//
      return 0; // traits::not_eof(0);
    }
}

std::streambuf * socketbuf::setbuf(std::streambuf::char_type * buf,
                                   std::streamsize len)
{
    if((buf != NULL) && (len > 0)) {
      _buffer = buf;
      setp(_buffer, _buffer+(len >> 1));
      setg(_buffer+(len >> 1), _buffer+len, _buffer+len);
    }

    return this;
}

stream_socketbuf::stream_socketbuf(SOCKET_TYPE sock,
                                   std::streamsize insize,
                                   std::streamsize outsize)
    : socketbuf(sock, insize, outsize) { }

stream_socketbuf::stream_socketbuf(SOCKET_TYPE sock,
                                   std::streambuf::char_type * buf,
                                   std::streamsize length)
    : socketbuf(sock, buf, length) { }

stream_socketbuf::~stream_socketbuf()
{
}

dgram_socketbuf::dgram_socketbuf(SOCKET_TYPE sock,
                                 std::streamsize insize,
                                 std::streamsize outsize)
    : socketbuf(sock, insize, outsize),
      out_p_size(sizeof(out_peer)), in_p_size(sizeof(in_peer))
{
}

dgram_socketbuf::dgram_socketbuf(SOCKET_TYPE sock,
                                 std::streambuf::char_type * buf,
                                 std::streamsize length)
    : socketbuf(sock, buf, length),
      out_p_size(sizeof(out_peer)), in_p_size(sizeof(in_peer))
{
}

dgram_socketbuf::~dgram_socketbuf()
{
  sync();
}

// The next function are those who do the dirt work

// overflow() - handles output to a connected socket.
int_type stream_socketbuf::overflow(int_type nCh) {
  // in case of error, user finds out by testing fail()
  if(_socket==INVALID_SOCKET) {
    return traits_type::eof(); // Invalid socket
  }

  if(pptr()-pbase() <= 0) {
    return 0; // nothing to send
  }

  // prepare structure for detecting timeout

  // if a timeout was specified, wait for it.

  if((_overflow_timeout.tv_sec+_overflow_timeout.tv_usec) > 0) {
    int sr;
    timeval tv = _overflow_timeout;
    fd_set socks;
    FD_ZERO(&socks); // zero fd_set
    FD_SET(_socket,&socks); // add buffer socket to fd_set
    sr = ::select(_socket+1,NULL,&socks,NULL,&tv);
    if(sr == 0){
      Timeout = true;
      return traits_type::eof(); // a timeout error should be set here! - RGJ
    } else if(sr < 0) {
      return traits_type::eof(); // error on select()
    }
    assert(FD_ISSET(_socket,&socks));
  }
  Timeout = false;

  // send pending data or return eof() on error
  int size=::send(_socket, pbase(),pptr()-pbase(),0);

  if(size < 0) {
    return traits_type::eof(); // Socket Could not send
  }

  if(size == 0) {
    return traits_type::eof(); // remote site has closed this connection
  }

  if(nCh != traits_type::eof()) {
    // size >= 1 at this point
    size--;
    *(pbase()+size)=nCh;
  }

  // move remaining pbase()+size .. pptr()-1 => pbase() .. pptr()-size-1
  for(std::streambuf::char_type * p=pbase() + size; p < pptr(); p++)
    *(p - size) = *p;

  const int newlen = (pptr() - pbase()) - size;

  setp(pbase(),epptr());

  pbump(newlen);

  return 0; // traits::not_eof(ch)
}

// underflow() - handles input from a connected socket.
int_type stream_socketbuf::underflow()
{
  if(_socket == INVALID_SOCKET) {
    return traits_type::eof(); // Invalid socket!
  }

  assert(gptr());
  if(gptr() < egptr()) {
    return traits_type::to_int_type(*this->gptr());
  }

  // prepare structure for detecting timeout

  // if a timeout was specified, wait for it.
  if((_underflow_timeout.tv_sec+_underflow_timeout.tv_usec) > 0) {
    int sr;
    timeval tv = _underflow_timeout;
    fd_set socks;
    FD_ZERO(&socks); // zero fd_set
    FD_SET(_socket,&socks); // add buffer socket to fd_set
    sr = ::select(_socket+1,&socks,NULL,NULL,&tv);
    if(sr == 0){
      Timeout = true;
      return traits_type::eof(); // a timeout error should be set here! - RGJ
    } else if(sr < 0) {
      return traits_type::eof(); // error on select()
    }
    assert(FD_ISSET(_socket,&socks));
  }
  Timeout = false;


  // fill up from eback to egptr
  // receive data or return eof() on error
  int size = ::recv(_socket, eback(), egptr()-eback(), 0);

  if(size <= 0) {
    return traits_type::eof(); // remote site has closed connection or (TCP) Receive error
  }

  // move receivd data from eback() .. eback()+size to egptr()-size .. egptr()
  const std::streamsize delta = egptr()-(eback()+size);
  for(std::streambuf::char_type * p = eback() + size - 1; p >= eback(); p--)
    *(p + delta) = *p;

  setg(eback(), egptr() - size, egptr());

  return traits_type::to_int_type(*this->gptr()); // traits::not_eof(...)
}

// setTarget() - set the target socket address
bool dgram_socketbuf::setTarget(const std::string& address, unsigned port,
                                int proto)
{
  if (_socket != INVALID_SOCKET) {
    ::closesocket(_socket);
    _socket = INVALID_SOCKET;
  }

  ip_datagram_address target;

  char portName[32];

  ::sprintf(portName, "%d", port);

  if(target.resolveConnector(address, portName) != 0) {
    return false;
  }

  bool success = false;

  ip_datagram_address::const_iterator I = target.begin();
  for(; success == false && I != target.end(); ++I) {
    struct addrinfo * i = *I;
    _socket = ::socket(i->ai_family, i->ai_socktype, i->ai_protocol);

    if (_socket != INVALID_SOCKET) {
      ::memcpy(&out_peer, i->ai_addr, i->ai_addrlen);
      out_p_size = i->ai_addrlen;
      success = true;
    }

  }

  return success;
}

/// Handle output to a connected socket.
int_type dgram_socketbuf::overflow(int_type nCh)
{
  // in case of error, user finds out by testing fail()
  if(_socket==INVALID_SOCKET) {
    return traits_type::eof(); // Invalid socket
  }

  if(pptr()-pbase() <= 0) {
    return 0; // nothing to send
  }

  int size;

  // prepare structure for detecting timeout

  // if a timeout was specified, wait for it.

  if((_overflow_timeout.tv_sec+_overflow_timeout.tv_usec) > 0) {
    int sr;
    timeval tv = _overflow_timeout;
    fd_set socks;
    FD_ZERO(&socks); // zero fd_set
    FD_SET(_socket,&socks); // add buffer socket to fd_set
    sr = ::select(_socket+1,NULL,&socks,NULL,&tv);
    if(sr == 0){
      Timeout = true;
      return traits_type::eof(); // a timeout error should be set here! - RGJ
    } else if(sr < 0) {
      return traits_type::eof(); // error on select()
    }
    assert(FD_ISSET(_socket,&socks));
  }
  Timeout = false;

  // send pending data or return eof() on error
  size=::sendto(_socket, pbase(),pptr()-pbase(),0,(sockaddr*)&out_peer,out_p_size);

  if(size < 0) {
    return traits_type::eof(); // Socket Could not send
  }

  if(size == 0) {
    return traits_type::eof(); // remote site has closed this connection
  }

  if(nCh != traits_type::eof()) {
    // size >= 1 at this point
    size--;
    *(pbase()+size)=nCh;
  }

  // move remaining pbase()+size .. pptr()-1 => pbase() .. pptr()-size-1
  for(char *p=pbase()+size; p<pptr(); p++)
    *(p-size)=*p;

  const int newlen=(pptr()-pbase())-size;

  setp(pbase(),epptr());

  pbump(newlen);

  return 0; // traits::not_eof(ch)
}

// underflow() - handles input from a connected socket.
int_type dgram_socketbuf::underflow() {
  if(_socket == INVALID_SOCKET) {
    return traits_type::eof(); // Invalid socket!
  }

  if(gptr() < egptr()) {
    return traits_type::to_int_type(*this->gptr());
  }

  // fill up from eback to egptr
  int size;

  // prepare structure for detecting timeout

  // if a timeout was specified, wait for it.
  if((_underflow_timeout.tv_sec+_underflow_timeout.tv_usec) > 0) {
    int sr;
    timeval tv = _underflow_timeout;
    fd_set socks;
    FD_ZERO(&socks); // zero fd_set
    FD_SET(_socket,&socks); // add buffer socket to fd_set
    sr = ::select(_socket+1,&socks,NULL,NULL,&tv);
    if(sr == 0){
      Timeout = true;
      return traits_type::eof(); // a timeout error should be set here! - RGJ
    } else if(sr < 0) {
      return traits_type::eof(); // error on select()
    }
    assert(FD_ISSET(_socket,&socks));
  }
  Timeout = false;


  // receive data or return eof() on error
  in_p_size = sizeof(in_peer);
  size = ::recvfrom(_socket, eback(), egptr()-eback(), 0,
                    (sockaddr*)&in_peer, &in_p_size);

  if(size <= 0) {
    return traits_type::eof(); // remote site has closed connection or (TCP) Receive error
  }

  // move receivd data from eback() .. eback()+size to egptr()-size .. egptr()
  const int delta = egptr()-(eback()+size);
  for(char *p=eback()+size-1; p >= eback(); p--)
    *(p+delta) = *p;

  setg(eback(), egptr()-size, egptr());

  return (int)(unsigned char)(*gptr()); // traits::not_eof(...)
}

/////////////////////////////////////////////////////////////////////////////
// class basic_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

// Constructor

basic_socket_stream::basic_socket_stream(socketbuf & buffer, int proto)
    : std::iostream(&buffer), _sockbuf(buffer),
      m_protocol(proto)
{
  init(&_sockbuf); // initialize underlying streambuf
}

basic_socket_stream::~basic_socket_stream()
{
  delete &_sockbuf;
}

SOCKET_TYPE basic_socket_stream::getSocket() const
{
  return _sockbuf.getSocket();
}

void basic_socket_stream::shutdown(bool wr_only) {
  SOCKET_TYPE fd = getSocket();
  if(fd != INVALID_SOCKET){
    if(::shutdown(fd, wr_only ? SHUT_WR : SHUT_RDWR) == SOCKET_ERROR) {
      setLastError();
    }
  }
}

// closes a socket connection
void basic_socket_stream::close() {
  SOCKET_TYPE fd = getSocket();
  if(fd != INVALID_SOCKET){
    if(::closesocket(fd) == SOCKET_ERROR) {
      setLastError();
      return;
    }
    _sockbuf.setSocket(INVALID_SOCKET);
  }
}

// Check for failure condition
bool basic_socket_stream::fail() {
  if(timeout()) {
    clear();
    return false;
  }
  if(std::iostream::fail()) {
    setLastError();
    return true;
  }
  return false;
}

static int set_nonblock(int sfd)
{
#ifndef _WIN32
  int flags = ::fcntl(sfd, F_GETFL, 0);
  if (flags == -1) {
    flags = 0;
  }
  return ::fcntl(sfd, F_SETFL, flags | O_NONBLOCK);
#else // _WIN32
  u_long nonblocking = 1;  // This flag may be set elsewhere,
                           // in a header ?
  return ::ioctlsocket(sfd, FIONBIO, &nonblocking);
#endif // _WIN32
}

static int reset_nonblock(int sfd)
{
#ifndef _WIN32
  int flags = ::fcntl(sfd, F_GETFL, 0);
  if (flags == -1) {
    flags = 0;
  }
  return ::fcntl(sfd, F_SETFL, flags & ~O_NONBLOCK);
#else // _WIN32
  u_long blocking = 0;
  return ::ioctlsocket(sfd, FIONBIO, &blocking);
#endif // _WIN32
}

/////////////////////////////////////////////////////////////////////////////
// class stream_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

stream_socket_stream::stream_socket_stream()
    : basic_socket_stream(*new stream_socketbuf(INVALID_SOCKET)),
      _connecting_socket(INVALID_SOCKET)
{
}

stream_socket_stream::stream_socket_stream(SOCKET_TYPE socket)
    : basic_socket_stream(*new stream_socketbuf(socket)),
      _connecting_socket(INVALID_SOCKET)
{
}

stream_socket_stream::~stream_socket_stream()
{
  if(_connecting_socket != INVALID_SOCKET) {
    ::closesocket(_connecting_socket);
  }
}

void stream_socket_stream::close()
{
  if(_connecting_socket != INVALID_SOCKET) {
    ::closesocket(_connecting_socket);
    _connecting_socket = INVALID_SOCKET;
  }

  basic_socket_stream::close();
}

SOCKET_TYPE stream_socket_stream::getSocket() const
{
    return (_connecting_socket == INVALID_SOCKET)
            ? basic_socket_stream::getSocket() : _connecting_socket;
}

/////////////////////////////////////////////////////////////////////////////
// class tcp_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

tcp_socket_stream::tcp_socket_stream() :
      _connecting_address(0),
      _connecting_addrlist(0)
{
  m_protocol = FreeSockets::proto_TCP;
}

tcp_socket_stream::tcp_socket_stream(SOCKET_TYPE socket)
    : stream_socket_stream(socket),
      _connecting_address(0),
      _connecting_addrlist(0)
{
  m_protocol = FreeSockets::proto_TCP;
}

tcp_socket_stream::tcp_socket_stream(const std::string& address, int service,
                                     bool nonblock) :
      _connecting_address(0),
      _connecting_addrlist(0)
{
  m_protocol = FreeSockets::proto_TCP;
  open(address, service, nonblock);
}

tcp_socket_stream::tcp_socket_stream(const std::string& address, int service,
                                     unsigned int milliseconds) :
      _connecting_address(0),
      _connecting_addrlist(0)
{
  m_protocol = FreeSockets::proto_TCP;
  open(address, service, milliseconds);
}

tcp_socket_stream::~tcp_socket_stream()
{
  if(_connecting_socket != INVALID_SOCKET) {
    ::freeaddrinfo(_connecting_addrlist);
  }
}

int tcp_socket_stream::open(const std::string & address,
                            int service, bool nonblock)
{
  if (is_open() || _connecting_socket != INVALID_SOCKET) {
    close();
  }

  if (_connecting_addrlist != 0) {
    ::freeaddrinfo(_connecting_addrlist);
    _connecting_addrlist = 0;
  }

  tcp_address endpoint;

  char serviceName[32];

  ::sprintf(serviceName, "%d", service);

  if (endpoint.resolveConnector(address, serviceName) != 0) {
    copyLastError(endpoint);
    return -1;
  }

  bool success = false;
  SOCKET_TYPE sfd = INVALID_SOCKET;
  tcp_address::const_iterator I = endpoint.begin();
  tcp_address::const_iterator Iend = endpoint.end();

  for(; success == false && I != Iend; ++I) {
    struct addrinfo * i = *I;
    sfd = ::socket(i->ai_family, i->ai_socktype, i->ai_protocol);
    if(sfd == INVALID_SOCKET) {
      continue;
    }

    if(nonblock) {
      int err_val = set_nonblock(sfd);
      if(err_val == -1) {
        setLastError();
        ::closesocket(sfd);
        continue;
      }
    }

    if(::connect(sfd, i->ai_addr, i->ai_addrlen) < 0) {
      if(nonblock && getSystemError() == SOCKET_BLOCK_ERROR) {
        _connecting_socket = sfd;
        _connecting_address = i;
        _connecting_addrlist = endpoint.takeAddressInfo();
        return 0;
      }
      setLastError();
      ::closesocket(sfd);
    } else {
      success = true;
    }

  }

  if (!success) {
    return -1;
  }

  // set the socket blocking again for io
  if(nonblock) {
    int err_val = reset_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      return -1;
    }
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(sfd);

  return 0;
}

int tcp_socket_stream::open(const std::string & address, int service,
                            unsigned int milliseconds)
{
  if (open(address, service, true) != 0) {
    return -1;
  }
  // FIXME add retry logic here
  if(!isReady(milliseconds)) {
    close();
    return -1;
  }
  return -1;
}

int tcp_socket_stream::open(struct addrinfo * i, bool nonblock)
{
  if (is_open()) {
    close();
  }

  if (_connecting_addrlist != 0) {
    ::freeaddrinfo(_connecting_addrlist);
    _connecting_addrlist = 0;
  }

  SOCKET_TYPE sfd = ::socket(i->ai_family, i->ai_socktype, i->ai_protocol);
  if(sfd == INVALID_SOCKET) {
    return -1;
  }

  if(nonblock) {
    int err_val = set_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      return -1;
    }
  }

  if(::connect(sfd, i->ai_addr, i->ai_addrlen) < 0) {
    if(nonblock && getSystemError() == SOCKET_BLOCK_ERROR) {
      _connecting_socket = sfd;
      _connecting_address = i;
      return 0;
    }
    setLastError();
    ::closesocket(sfd);
    return -1;
  }

  // set the socket blocking again for io
  if(nonblock) {
    int err_val = reset_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      return -1;
    }
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(sfd);
  return 0;
}



int tcp_socket_stream::open_next()
{
  if(_connecting_socket == INVALID_SOCKET ||
     _connecting_addrlist == 0 ||
     _connecting_address == 0) {
    // We can only go on if we are in non-blocking connect already
    return -1;
  }

  ::closesocket(_connecting_socket);
  _connecting_socket = INVALID_SOCKET;

  bool success = false;
  SOCKET_TYPE sfd = INVALID_SOCKET;

  struct addrinfo * i = _connecting_address->ai_next;
  for (; success == false && i != 0; i = i->ai_next) {
    sfd = ::socket(i->ai_family, i->ai_socktype, i->ai_protocol);
    if(sfd == INVALID_SOCKET) {
      setLastError();
      continue;
    }
    int err_val = set_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      continue;
    }

    if(::connect(sfd, i->ai_addr, i->ai_addrlen) < 0) {
      if(getSystemError() == SOCKET_BLOCK_ERROR) {
        _connecting_socket = sfd;
        _connecting_address = i;
        return 1;
      }
      setLastError();
      ::closesocket(sfd);
    } else {
      success = true;
    }
  }

  assert(_connecting_socket == INVALID_SOCKET);

  ::freeaddrinfo(_connecting_addrlist);
  _connecting_addrlist = 0;
  _connecting_address = 0;

  if (!success) {
    return -1;
  }

  assert(sfd == INVALID_SOCKET);

  // Socket is connected, complete the process

  // set the socket blocking again for io
  int err_val = reset_nonblock(sfd);
  if(err_val == -1) {
    setLastError();
    ::closesocket(sfd);
    return true;
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(sfd);

  return 0;
}

const std::string tcp_socket_stream::getRemoteHost(bool lookup) const
{
  sockaddr_storage peer;
  SOCKLEN peer_size;
  char hbuf[NI_MAXHOST];
  const int flags = lookup ? 0 : NI_NUMERICHOST;

  if (::getpeername(getSocket(), (sockaddr*)&peer, &peer_size) != 0) {
    return "[unconnected]";
  }

  if (::getnameinfo((const sockaddr*)&peer, peer_size,
                    hbuf, sizeof(hbuf), 0, 0, flags) == 0) {
    return std::string(hbuf);
  }
  return "[unknown]";
}

const std::string tcp_socket_stream::getRemoteService(bool lookup) const
{
  char sbuf[NI_MAXSERV];
  sockaddr_storage peer;
  SOCKLEN peer_size;
  const int flags = lookup ? 0 : NI_NUMERICSERV;

  if (::getpeername(getSocket(), (sockaddr*)&peer, &peer_size) != 0) {
    return "[unconnected]";
  }

  if (::getnameinfo((const sockaddr*)&peer, peer_size,
                    0, 0, sbuf, sizeof(sbuf), flags) == 0) {
    return std::string(sbuf);
  }
  return "[unknown]";
}

bool tcp_socket_stream::isReady(unsigned int milliseconds)
{
  if(_connecting_socket == INVALID_SOCKET) {
    return true;
  }

  fd_set wfds;
  fd_set * efdsp = 0;
  struct timeval wait_time = {milliseconds / 1000, (milliseconds % 1000) * 1000};

  FD_ZERO(&wfds);
  FD_SET(_connecting_socket, &wfds);

#ifdef _WIN32
  fd_set efds;
  FD_ZERO(&efds);
  FD_SET(_connecting_socket, &efds);
  
  efdsp = &efds;
#endif // _WIN32

  if (::select(_connecting_socket + 1, 0, &wfds, efdsp, &wait_time) != 1
#ifdef _WIN32
      || !FD_ISSET(_connecting_socket, &efds) && !FD_ISSET(_connecting_socket, &wfds)) {
#else // _WIN32
      || !FD_ISSET(_connecting_socket, &wfds)) {
#endif // _WIN32
    return false;
  }

  // It's done connecting, check for error

  int errnum;
  SOCKLEN errsize = sizeof(errnum);
#ifndef _WIN32
  ::getsockopt(_connecting_socket, SOL_SOCKET, SO_ERROR, &errnum, &errsize);
#else // _WIN32
  ::getsockopt(_connecting_socket, SOL_SOCKET, SO_ERROR, (LPSTR)&errnum, &errsize);
#endif // _WIN32

  // Check for failure, and if it has occured, we need to
  // revisit the address list we got from getaddrinfo.
  assert(_connecting_address != 0);

  if (errnum != 0) {
    return false;
  }

  if (_connecting_addrlist != 0) {
    ::freeaddrinfo(_connecting_addrlist);
    _connecting_addrlist = 0;
  }
  _connecting_address = 0;

  // set the socket blocking again for io
  int err_val = reset_nonblock(_connecting_socket);
  if(err_val == -1) {
    setLastError();
    ::closesocket(_connecting_socket);
    _connecting_socket = INVALID_SOCKET;
    return true;
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(_connecting_socket);
  _connecting_socket = INVALID_SOCKET;

  return true;
}

/////////////////////////////////////////////////////////////////////////////
// class dgram_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

dgram_socket_stream::dgram_socket_stream() :
                     basic_socket_stream(*new dgram_socketbuf(INVALID_SOCKET)),
                     dgram_sockbuf((dgram_socketbuf&)_sockbuf)
{
}

dgram_socket_stream::~dgram_socket_stream()
{
}

int dgram_socket_stream::bindToIpService(int service, int type, int protocol)
{
  struct addrinfo req, *ans;
  char serviceName[32];

  ::sprintf(serviceName, "%d", service);

  req.ai_flags = AI_PASSIVE;
  req.ai_family = PF_UNSPEC;
  req.ai_socktype = type;
  req.ai_protocol = 0;
  req.ai_addrlen = 0;
  req.ai_addr = 0;
  req.ai_canonname = 0;
  req.ai_next = 0;

  int ret;
  if ((ret = ::getaddrinfo(0, serviceName, &req, &ans)) != 0) {
    std::cout << "skstream: " << gai_strerror(ret)
              << std::endl << std::flush;
    setLastError();
    return -1;
  }

  int success = -1;

  for(struct addrinfo * i = ans; success == -1 && i != 0; i = i->ai_next) {
    SOCKET_TYPE socket = ::socket(i->ai_family, i->ai_socktype, i->ai_protocol);
    if (socket == INVALID_SOCKET) {
      setLastError();
      continue;
    }
    dgram_sockbuf.setSocket(socket);

    if (::bind(socket, i->ai_addr, i->ai_addrlen) == SOCKET_ERROR) {
      setLastError();
      close();
    } else {
      success = 0;
    }
  }

  ::freeaddrinfo(ans);

  return success;
}

/////////////////////////////////////////////////////////////////////////////
// class udp_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

udp_socket_stream::udp_socket_stream()
{
  m_protocol = FreeSockets::proto_UDP;
}

udp_socket_stream::~udp_socket_stream()
{
  // Don't close the main socket, that is done in the basic_socket_stream
  // destructor
}

int udp_socket_stream::open(int service)
{
  if (is_open()) {
    close();
  }

  if (bindToIpService(service, SOCK_DGRAM, IPPROTO_UDP) != 0) {
    return -1;
  }

  return 0;
}

#ifdef SKSTREAM_UNIX_SOCKETS

#include <skstream/skstream_unix.h>

#include <sys/un.h>

/////////////////////////////////////////////////////////////////////////////
// class unix_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////

unix_socket_stream::unix_socket_stream()
{
}

unix_socket_stream::unix_socket_stream(SOCKET_TYPE socket)
    : stream_socket_stream(socket)
{
}

unix_socket_stream::unix_socket_stream(const std::string & address,
                                       bool nonblock)
{
  open(address, nonblock);
}

unix_socket_stream::unix_socket_stream(const std::string & address,
                                       unsigned int milliseconds)
{
  open(address, milliseconds);
}

unix_socket_stream::unix_socket_stream(unix_socket_stream & other,
                                       bool nonblock)
{
  open(other, nonblock);
}

unix_socket_stream::~unix_socket_stream()
{
  // Don't close the main socket, that is done in the basic_socket_stream
  // destructor
  if(_connecting_socket != INVALID_SOCKET) {
    ::closesocket(_connecting_socket);
  }
}

void unix_socket_stream::open(const std::string & address, bool nonblock)
{
  if (address.size() >  107) {
    return;
  }

  if(is_open() || _connecting_socket != INVALID_SOCKET) close();

  // Create socket
  SOCKET_TYPE sfd = ::socket(AF_UNIX, SOCK_STREAM, m_protocol);
  if(sfd == INVALID_SOCKET) {
    setLastError();
    return;
  }

  if(nonblock) {
    int err_val = set_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      return;
    }
  }

  // Fill host information
  sockaddr_un sa;
  sa.sun_family = AF_UNIX;
  strncpy(sa.sun_path, address.c_str(), sizeof(sa.sun_path));

  if(::connect(sfd,(sockaddr*)&sa, sizeof(sa)) == SOCKET_ERROR) {
    if(nonblock && getSystemError() == SOCKET_BLOCK_ERROR) {
      _connecting_socket = sfd;
      return;
    }
    setLastError();
    ::closesocket(sfd);
    return;
  }

  // set the socket blocking again for io
  if(nonblock) {
    int err_val = reset_nonblock(sfd);
    if(err_val == -1) {
      setLastError();
      ::closesocket(sfd);
      return;
    }
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(sfd);
}

void unix_socket_stream::open(const std::string & address,
                              unsigned int milliseconds)
{
  open(address, true);
  if(!isReady(milliseconds)) {
    close();
  }
}

void unix_socket_stream::open(unix_socket_stream & other, bool nonblock)
{
  // FIXME Create a socketpair connecting the two stream together.
}

bool unix_socket_stream::isReady(unsigned int milliseconds)
{
  if(_connecting_socket == INVALID_SOCKET) {
    return true;
  }

  fd_set fds;
  struct timeval wait_time = {milliseconds / 1000, (milliseconds % 1000) * 1000};

  FD_ZERO(&fds);
  FD_SET(_connecting_socket, &fds);

  if (::select(_connecting_socket + 1, 0, &fds, 0, &wait_time) != 1
      || !FD_ISSET(_connecting_socket, &fds)) {
    return false;
  }

  // It's done connecting, check for error

  // We're no longer connecting, put the socket in a tmp variable
  SOCKET_TYPE sfd = _connecting_socket;
  _connecting_socket = INVALID_SOCKET;

  int errnum;
  SOCKLEN errsize = sizeof(errnum);
#ifndef _WIN32
  getsockopt(sfd, SOL_SOCKET, SO_ERROR, &errnum, &errsize);
#else // _WIN32
  Sleep(0);
  getsockopt(sfd, SOL_SOCKET, SO_ERROR, (LPSTR)&errnum, &errsize);
#endif // _WIN32

  if(errnum != 0) {
    // Can't use setLastError(), since errno doesn't have the error
    LastError = errnum;
    ::closesocket(sfd);
    return true;
  }

  // set the socket blocking again for io
  int err_val = reset_nonblock(sfd);
  if(err_val == -1) {
    setLastError();
    ::closesocket(sfd);
    return true;
  }

  // set socket for underlying socketbuf
  _sockbuf.setSocket(sfd);

  return true;
}

#endif // SKSTREAM_UNIX_SOCKETS

/////////////////////////////////////////////////////////////////////////////
// class raw_socket_stream implementation
/////////////////////////////////////////////////////////////////////////////
#ifdef SOCK_RAW

raw_socket_stream::raw_socket_stream(FreeSockets::IP_Protocol proto)
{
  m_protocol = proto;
  SOCKET_TYPE sfd = ::socket(AF_INET, SOCK_RAW, m_protocol);
  _sockbuf.setSocket(sfd);
}

void raw_socket_stream::setProtocol(FreeSockets::IP_Protocol proto) {
  if(is_open()) close();
  m_protocol = proto;
  SOCKET_TYPE sfd = ::socket(AF_INET, SOCK_RAW, m_protocol);
  _sockbuf.setSocket(sfd);
}

raw_socket_stream::~raw_socket_stream()
{
  // Don't close the main socket, that is done in the basic_socket_stream
  // destructor
}

bool raw_socket_stream::setBroadcast(bool opt)
{
  int ok = opt?1:0;
  ok = ::setsockopt(_sockbuf.getSocket(),
                  SOL_SOCKET,SO_BROADCAST,(char*)&ok,sizeof(ok));
  bool ret = (ok != SOCKET_ERROR);
  if(!ret) setLastError();
  return ret;
}

#endif // SOCK_RAW