File: NmapOps.cc

package info (click to toggle)
nmap 6.00-0.3+deb7u1
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 55,576 kB
  • sloc: ansic: 108,190; cpp: 60,191; sh: 19,314; python: 16,531; xml: 9,428; makefile: 2,473; perl: 1,980; yacc: 608; lex: 469; asm: 372
file content (655 lines) | stat: -rw-r--r-- 24,799 bytes parent folder | download
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

/***************************************************************************
 * NmapOps.cc -- The NmapOps class contains global options, mostly based   *
 * on user-provided command-line settings.                                 *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *                                                                         *
 * The Nmap Security Scanner is (C) 1996-2012 Insecure.Com LLC. Nmap is    *
 * also a registered trademark of Insecure.Com LLC.  This program is free  *
 * software; you may redistribute and/or modify it under the terms of the  *
 * GNU General Public License as published by the Free Software            *
 * Foundation; Version 2 with the clarifications and exceptions described  *
 * below.  This guarantees your right to use, modify, and redistribute     *
 * this software under certain conditions.  If you wish to embed Nmap      *
 * technology into proprietary software, we sell alternative licenses      *
 * (contact sales@insecure.com).  Dozens of software vendors already       *
 * license Nmap technology such as host discovery, port scanning, OS       *
 * detection, version detection, and the Nmap Scripting Engine.            *
 *                                                                         *
 * Note that the GPL places important restrictions on "derived works", yet *
 * it does not provide a detailed definition of that term.  To avoid       *
 * misunderstandings, we interpret that term as broadly as copyright law   *
 * allows.  For example, we consider an application to constitute a        *
 * "derivative work" for the purpose of this license if it does any of the *
 * following:                                                              *
 * o Integrates source code from Nmap                                      *
 * o Reads or includes Nmap copyrighted data files, such as                *
 *   nmap-os-db or nmap-service-probes.                                    *
 * o Executes Nmap and parses the results (as opposed to typical shell or  *
 *   execution-menu apps, which simply display raw Nmap output and so are  *
 *   not derivative works.)                                                *
 * o Integrates/includes/aggregates Nmap into a proprietary executable     *
 *   installer, such as those produced by InstallShield.                   *
 * o Links to a library or executes a program that does any of the above   *
 *                                                                         *
 * The term "Nmap" should be taken to also include any portions or derived *
 * works of Nmap, as well as other software we distribute under this       *
 * license such as Zenmap, Ncat, and Nping.  This list is not exclusive,   *
 * but is meant to clarify our interpretation of derived works with some   *
 * common examples.  Our interpretation applies only to Nmap--we don't     *
 * speak for other people's GPL works.                                     *
 *                                                                         *
 * If you have any questions about the GPL licensing restrictions on using *
 * Nmap in non-GPL works, we would be happy to help.  As mentioned above,  *
 * we also offer alternative license to integrate Nmap into proprietary    *
 * applications and appliances.  These contracts have been sold to dozens  *
 * of software vendors, and generally include a perpetual license as well  *
 * as providing for priority support and updates.  They also fund the      *
 * continued development of Nmap.  Please email sales@insecure.com for     *
 * further information.                                                    *
 *                                                                         *
 * As a special exception to the GPL terms, Insecure.Com LLC grants        *
 * permission to link the code of this program with any version of the     *
 * OpenSSL library which is distributed under a license identical to that  *
 * listed in the included docs/licenses/OpenSSL.txt file, and distribute   *
 * linked combinations including the two. You must obey the GNU GPL in all *
 * respects for all of the code used other than OpenSSL.  If you modify    *
 * this file, you may extend this exception to your version of the file,   *
 * but you are not obligated to do so.                                     *
 *                                                                         *
 * If you received these files with a written license agreement or         *
 * contract stating terms other than the terms above, then that            *
 * alternative license agreement takes precedence over these comments.     *
 *                                                                         *
 * Source is provided to this software because we believe users have a     *
 * right to know exactly what a program is going to do before they run it. *
 * This also allows you to audit the software for security holes (none     *
 * have been found so far).                                                *
 *                                                                         *
 * Source code also allows you to port Nmap to new platforms, fix bugs,    *
 * and add new features.  You are highly encouraged to send your changes   *
 * to nmap-dev@insecure.org for possible incorporation into the main       *
 * distribution.  By sending these changes to Fyodor or one of the         *
 * Insecure.Org development mailing lists, or checking them into the Nmap  *
 * source code repository, it is understood (unless you specify otherwise) *
 * that you are offering the Nmap Project (Insecure.Com LLC) the           *
 * unlimited, non-exclusive right to reuse, modify, and relicense the      *
 * code.  Nmap will always be available Open Source, but this is important *
 * because the inability to relicense code has caused devastating problems *
 * for other Free Software projects (such as KDE and NASM).  We also       *
 * occasionally relicense the code to third parties as discussed above.    *
 * If you wish to specify special license conditions of your               *
 * contributions, just say so when you send them.                          *
 *                                                                         *
 * 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 v2.0 for more details at                         *
 * http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file       *
 * included with Nmap.                                                     *
 *                                                                         *
 ***************************************************************************/

/* $Id: NmapOps.cc 28544 2012-05-08 05:49:51Z david $ */
#include "nmap.h"
#include "nbase.h"
#include "NmapOps.h"
#include "services.h"
#include "utils.h"
#ifdef WIN32
#include "winfix.h"
#endif

NmapOps o;

NmapOps::NmapOps() {
  datadir = NULL;
  xsl_stylesheet = NULL;
  Initialize();
}

NmapOps::~NmapOps() {
  if (xsl_stylesheet) {
    free(xsl_stylesheet);
    xsl_stylesheet = NULL;
  }

  if (reference_FPs) {
    delete reference_FPs;
    reference_FPs = NULL;
  }

  if (dns_servers) {
    free(dns_servers);
    dns_servers = NULL;
  }
  if (extra_payload) {
    free(extra_payload);
    extra_payload = NULL;
  }
  if (ipoptions) {
    free(ipoptions);
    ipoptions = NULL;
  }
  if (portlist) {
    free(portlist);
    portlist = NULL;
  }
  if (exclude_spec) {
    free(exclude_spec);
    exclude_spec = NULL;
  }
  if (idleProxy) {
    free(idleProxy);
    idleProxy = NULL;
  }
  if (datadir) {
    free(datadir);
    datadir = NULL;
  }

#ifndef NOLUA
  if (scriptversion || script)
    close_nse();
  if (scriptargs) {
    free(scriptargs);
    scriptargs = NULL;
  }
#endif
}

void NmapOps::ReInit() {
  Initialize();
}

// no setpf() because it is based on setaf() values
int NmapOps::pf() {
  return (af() == AF_INET)? PF_INET : PF_INET6;
}

int NmapOps::SourceSockAddr(struct sockaddr_storage *ss, size_t *ss_len) {
  if (sourcesocklen <= 0)
    return 1;
  assert(sourcesocklen <= sizeof(*ss));
  if (ss)
    memcpy(ss, &sourcesock, sourcesocklen);
  if (ss_len)
    *ss_len = sourcesocklen;
  return 0;
}

/* Returns a const pointer to the source address if set, or NULL if unset. */
const struct sockaddr_storage *NmapOps::SourceSockAddr() const {
  if (sourcesock.ss_family == AF_UNSPEC)
    return NULL;
  else
    return &sourcesock;
}

/* Note that it is OK to pass in a sockaddr_in or sockaddr_in6 casted
     to sockaddr_storage */
void NmapOps::setSourceSockAddr(struct sockaddr_storage *ss, size_t ss_len) {
  assert(ss_len > 0 && ss_len <= sizeof(*ss));
  memcpy(&sourcesock, ss, ss_len);
  sourcesocklen = ss_len;
}

// Number of seconds since getStartTime().  The current time is an
// optional argument to avoid an extra gettimeofday() call.
float NmapOps::TimeSinceStart(const struct timeval *now) {
  struct timeval tv;
  if (!now)
    gettimeofday(&tv, NULL);
  else tv = *now;

  return TIMEVAL_FSEC_SUBTRACT(tv, start_time);
}

// Convert a filename to a file:// URL. The return value must be freed.
static char *filename_to_url(const char *filename) {
  std::string url(filename);
  char percent_buffer[10];

#if WIN32
  for (std::string::iterator p = url.begin(); p != url.end(); p++) {
    if (*p == '\\')
      *p = '/';
  }
  /* Put a pseudo-root directory before "C:/" or whatever. */
  url = "/" + url;
#endif

  /* Percent-encode any troublesome characters. */
  std::string::size_type i = 0;
  /* See RFC 3986, section 3.3 "Path" for allowed characters. */
  while ((i = url.find_first_of("?#[]%", i)) != std::string::npos) {
    Snprintf(percent_buffer, sizeof(percent_buffer), "%%%02X", url[i]);
    url.replace(i, 1, percent_buffer);
    i += strlen(percent_buffer);
  }

  url = "file://" + url;

  return strdup(url.c_str());
}

void NmapOps::Initialize() {
  setaf(AF_INET);
#if defined WIN32 || defined __amigaos__
  isr00t = 1;
#else
  if (getenv("NMAP_PRIVILEGED"))
    isr00t = 1;
  else if (getenv("NMAP_UNPRIVILEGED"))
    isr00t = 0;
  else
    isr00t = !(geteuid());
#endif
  have_pcap = true;
  debugging = 0;
  verbose = 0;
  min_packet_send_rate = 0.0; /* Unset. */
  max_packet_send_rate = 0.0; /* Unset. */
  stats_interval = 0.0; /* Unset. */
  randomize_hosts = 0;
  randomize_ports = 1;
  sendpref = PACKET_SEND_NOPREF;
  spoofsource = 0;
  fastscan = 0;
  device[0] = '\0';
  ping_group_sz = PING_GROUP_SZ;
  nogcc = 0;
  generate_random_ips = 0;
  reference_FPs = NULL;
  magic_port = 33000 + (get_random_uint() % 31000);
  magic_port_set = 0;
  timing_level = 3;
  max_parallelism = 0;
  min_parallelism = 0;
  max_os_tries = 5;
  max_rtt_timeout = MAX_RTT_TIMEOUT;
  min_rtt_timeout = MIN_RTT_TIMEOUT;
  initial_rtt_timeout = INITIAL_RTT_TIMEOUT;
  max_retransmissions = MAX_RETRANSMISSIONS;
  min_host_group_sz = 1;
  max_host_group_sz = 100000; // don't want to be restrictive unless user sets
  max_tcp_scan_delay = MAX_TCP_SCAN_DELAY;
  max_udp_scan_delay = MAX_UDP_SCAN_DELAY;
  max_sctp_scan_delay = MAX_SCTP_SCAN_DELAY;
  max_ips_to_scan = 0;
  extra_payload_length = 0;
  extra_payload = NULL;
  scan_delay = 0;
  open_only = false;
  scanflags = -1;
  defeat_rst_ratelimit = 0;
  resume_ip.s_addr = 0;
  osscan_limit = 0;
  osscan_guess = 0;
  numdecoys = 0;
  decoyturn = -1;
  osscan = 0;
  servicescan = 0;
  override_excludeports = 0;
  version_intensity = 7;
  pingtype = PINGTYPE_UNKNOWN;
  listscan = allowall = ackscan = bouncescan = connectscan = 0;
  nullscan = xmasscan = fragscan = synscan = windowscan = 0;
  maimonscan = idlescan = finscan = udpscan = ipprotscan = 0;
  noportscan = noresolve = 0;
  sctpinitscan = 0;
  sctpcookieechoscan = 0;
  append_output = 0;
  memset(logfd, 0, sizeof(FILE *) * LOG_NUM_FILES);
  ttl = -1;
  badsum = 0;
  nmap_stdout = stdout;
  gettimeofday(&start_time, NULL);
  pTrace = vTrace = false;
  reason = false;
  adler32 = false;
  if (datadir) free(datadir);
  datadir = NULL;
  xsl_stylesheet_set = false;
  if (xsl_stylesheet) free(xsl_stylesheet);
  xsl_stylesheet = NULL;
  spoof_mac_set = false;
  mass_dns = true;
  log_errors = false;
  deprecated_xml_osclass = false;
  resolve_all = 0;
  dns_servers = NULL;
  numhosts_scanned = 0;
  numhosts_up = 0;
  numhosts_scanning = 0;
  noninteractive = false;
  current_scantype = STYPE_UNKNOWN;
  ipoptions = NULL;
  ipoptionslen = 0;
  ipopt_firsthop = 0;
  ipopt_lasthop  = 0;  
  release_memory = false;
  topportlevel = -1;
#ifndef NOLUA
  script = 0;
  scriptargs = NULL;
  scriptversion = 0;
  scripttrace = 0;
  scriptupdatedb = 0;
  scripthelp = false;
  chosenScripts.clear();
#endif
  memset(&sourcesock, 0, sizeof(sourcesock));
  sourcesocklen = 0;
  excludefd = NULL;
  exclude_spec = NULL;
  quashargv = 0;
  inputfd = NULL;
  idleProxy = NULL;
  portlist = NULL;
}

bool NmapOps::SCTPScan() {
  return sctpinitscan|sctpcookieechoscan;
}

bool NmapOps::TCPScan() {
  return ackscan|bouncescan|connectscan|finscan|idlescan|maimonscan|nullscan|synscan|windowscan|xmasscan;
}

bool NmapOps::UDPScan() {
  return udpscan;
}

bool NmapOps::RawScan() {
  if (ackscan||finscan||idlescan||ipprotscan||maimonscan||nullscan||osscan||synscan||udpscan||windowscan||xmasscan||sctpinitscan||sctpcookieechoscan||traceroute)
    return true;
  if (pingtype & (PINGTYPE_ICMP_PING|PINGTYPE_ICMP_MASK|PINGTYPE_ICMP_TS|PINGTYPE_TCP_USE_ACK|PINGTYPE_UDP|PINGTYPE_SCTP_INIT))
    return true;
  /* A SYN scan will only generate raw packets if nmap is running as root.
     Otherwise, it becomes a connect scan. */
  if ((pingtype & PINGTYPE_TCP_USE_SYN) && isr00t)
    return true;

   return false; 
}


void NmapOps::ValidateOptions() {
	const char *privreq = "root privileges.";
#ifdef WIN32
	if (!have_pcap)
		privreq = "WinPcap version 3.1 or higher and\n\
iphlpapi.dll.  You seem to be missing one or both of these.  Winpcap is\n\
available from http://www.winpcap.org.  iphlpapi.dll comes with Win98 and\n\
later operating sytems and NT 4.0 with SP4 or greater.  For previous windows\n\
versions, you may be able to take iphlpapi.dll from another system and place\n\
it in your system32 dir (e.g. c:\\windows\\system32).\n\
On Windows Vista and Windows 7, The WinPcap NPF service must be started by an\n\
administrator before WinPcap can be used.  Running nmap.exe will open a UAC\n\
dialog where you can start NPF if you have administrator privileges.";
#endif


  /* Insure that at least one scantype is selected */
  if (!noportscan && !(TCPScan() || UDPScan() || SCTPScan() || ipprotscan)) {
    if (isr00t)
      synscan++;
    else connectscan++;
    //    if (verbose) error("No TCP, UDP, SCTP or ICMP scantype specified, assuming %s scan. Use -sn if you really don't want to portscan (and just want to see what hosts are up).", synscan? "SYN Stealth" : "vanilla tcp connect()");
  }

  if (pingtype != PINGTYPE_NONE && spoofsource) {
    error("WARNING:  If -S is being used to fake your source address, you may also have to use -e <interface> and -Pn .  If you are using it to specify your real source address, you can ignore this warning.");
  }

  if (pingtype != PINGTYPE_NONE && idlescan) {
    error("WARNING: Many people use -Pn w/Idlescan to prevent pings from their true IP.  On the other hand, timing info Nmap gains from pings can allow for faster, more reliable scans.");
    sleep(2); /* Give ppl a chance for ^C :) */
  }

 if (numdecoys > 1 && idlescan) {
    error("WARNING: Your decoys won't be used in the Idlescan portion of your scanning (although all packets sent to the target are spoofed anyway");
  }

 if (connectscan && spoofsource) {
    error("WARNING:  -S will only affect the source address used in a connect() scan if you specify one of your own addresses.  Use -sS or another raw scan if you want to completely spoof your source address, but then you need to know what you're doing to obtain meaningful results.");
  }

 if ((pingtype & PINGTYPE_UDP) && (!isr00t)) {
   fatal("Sorry, UDP Ping (-PU) only works if you are root (because we need to read raw responses off the wire)");
 }

 if ((pingtype & PINGTYPE_SCTP_INIT) && (!isr00t || af() != AF_INET)) {
   fatal("Sorry, SCTP INIT Ping (-PY) only works if you are root (because we need to read raw responses off the wire) and only for IPv4 (cause fyodor is too lazy right now to add IPv6 support and nobody has sent a patch)");
  }

 if ((pingtype & PINGTYPE_PROTO) && (!isr00t || af() != AF_INET)) {
   fatal("Sorry, IPProto Ping (-PO) only works if you are root (because we need to read raw responses off the wire) and only for IPv4");
 }

 if (ipprotscan && (TCPScan() || UDPScan() || SCTPScan())) {
   fatal("Sorry, the IPProtoscan (-sO) must currently be used alone rather than combined with other scan types.");
 }

 if (noportscan && (TCPScan() || UDPScan() || SCTPScan() || ipprotscan)) {
   fatal("-sL and -sn (skip port scan) are not valid with any other scan types");
 }

 if (af() == AF_INET6 && (pingtype & (PINGTYPE_ICMP_MASK|PINGTYPE_ICMP_TS))) {
   fatal("ICMP Timestamp and Address Mask pings are only valid for IPv4.");
 }

 if (sendpref == PACKET_SEND_NOPREF) {
#ifdef WIN32
   sendpref = PACKET_SEND_ETH_STRONG;
#else
   sendpref = PACKET_SEND_IP_WEAK;
#endif
 }
/* We start with stuff users should not do if they are not root */
  if (!isr00t) {
    
    if (ackscan|finscan|idlescan|ipprotscan|maimonscan|nullscan|synscan|udpscan|windowscan|xmasscan|sctpinitscan|sctpcookieechoscan) {
      fatal("You requested a scan type which requires %s", privreq);
    }
    
    if (numdecoys > 0) {
      fatal("Sorry, but decoys (-D) require %s", privreq);
    }
    
    if (fragscan) {
      fatal("Sorry, but fragscan requires %s", privreq);
    }
    
    if (osscan) {
      fatal("TCP/IP fingerprinting (for OS scan) requires %s", privreq);
    }
  }
  
  
  if (bouncescan && pingtype != PINGTYPE_NONE) 
    log_write(LOG_STDOUT, "Hint: if your bounce scan target hosts aren't reachable from here, remember to use -Pn so we don't try and ping them prior to the scan\n");
  
  if (ackscan+bouncescan+connectscan+finscan+idlescan+maimonscan+nullscan+synscan+windowscan+xmasscan > 1)
    fatal("You specified more than one type of TCP scan.  Please choose only one of -sA, -b, -sT, -sF, -sI, -sM, -sN, -sS, -sW, and -sX");
  
  if (numdecoys > 0 && (bouncescan || connectscan)) {
    error("WARNING: Decoys are irrelevant to the bounce or connect scans");
  }
  
  if (fragscan && !(ackscan|finscan|maimonscan|nullscan|synscan|windowscan|xmasscan) && \
      !(pingtype&(PINGTYPE_ICMP_TS|PINGTYPE_TCP)) && !(fragscan == 8 && pingtype&PINGTYPE_ICMP_MASK) && \
      !(extra_payload_length + 8 > fragscan)) {
    fatal("Fragscan only works with TCP, ICMP Timestamp or ICMP Mask (mtu=8) ping types or ACK, FIN, Maimon, NULL, SYN, Window, and XMAS scan types");
  }
  
  if (osscan && bouncescan)
    error("Combining bounce scan with OS scan seems silly, but I will let you do whatever you want!");
  
#if !defined(LINUX) && !defined(OPENBSD) && !defined(FREEBSD) && !defined(NETBSD)
  if (fragscan) {
    error("Warning: Packet fragmentation selected on a host other than Linux, OpenBSD, FreeBSD, or NetBSD.  This may or may not work.");
  }
#endif
  
  if (osscan && noportscan) {
    fatal("WARNING:  OS Scan is unreliable without a port scan.  You need to use a scan type along with it, such as -sS, -sT, -sF, etc instead of -sn");
  }

  if (osscan && ipprotscan) {
    error("WARNING: Disabling OS Scan (-O) as it is incompatible with the IPProto Scan (-sO)");
    osscan = 0;
  }

  if (servicescan && ipprotscan) {
    error("WARNING: Disabling Service Scan (-sV) as it is incompatible with the IPProto Scan (-sO)");
    servicescan = 0;
  }

  if (servicescan && noportscan)
    servicescan = 0;

  if (defeat_rst_ratelimit && !synscan) {
      fatal("Option --defeat-rst-ratelimit works only with a SYN scan (-sS)");
  }
  
  if (resume_ip.s_addr && generate_random_ips)
    resume_ip.s_addr = 0;
  
  if (magic_port_set && connectscan) {
    error("WARNING:  -g is incompatible with the default connect() scan (-sT).  Use a raw scan such as -sS if you want to set the source port.");
  }

  if (max_parallelism && min_parallelism && (min_parallelism > max_parallelism)) {
    fatal("--min-parallelism=%i must be less than or equal to --max-parallelism=%i",min_parallelism,max_parallelism);
  }

  if (min_packet_send_rate != 0.0 && max_packet_send_rate != 0.0 && min_packet_send_rate > max_packet_send_rate) {
    fatal("--min-rate=%g must be less than or equal to --max-rate=%g", min_packet_send_rate, max_packet_send_rate);
  }
  
  if (af() == AF_INET6 && (generate_random_ips|numdecoys|bouncescan|fragscan|idlescan)) {
    fatal("Sorry -- IPv6 support is currently only available for TCP, UDP, and SCTP port scans and list scan (-sL).  OS detection, random targets and decoys are also not supported with IPv6.  Further support is under consideration.");
  }

  if(ipoptions && osscan)
    error("WARNING: Ip options are NOT used while OS scanning!");

#ifndef NOLUA
  /* Make sure nmap.registry.args is available (even if it's empty) */
  if (!scriptargs)
    scriptargs = strdup("");
#endif
}

void NmapOps::setMaxOSTries(int mot) {
  if (mot <= 0) 
    fatal("%s: value must be at least 1", __func__);
  max_os_tries = mot; 
}

void NmapOps::setMaxRttTimeout(int rtt) 
{ 
  if (rtt <= 0) fatal("%s: maximum round trip time must be greater than 0", __func__);
  max_rtt_timeout = rtt; 
  if (rtt < min_rtt_timeout) min_rtt_timeout = rtt; 
  if (rtt < initial_rtt_timeout) initial_rtt_timeout = rtt;
}

void NmapOps::setMinRttTimeout(int rtt) 
{ 
  if (rtt < 0) fatal("%s: minimum round trip time must be at least 0", __func__);
  min_rtt_timeout = rtt; 
  if (rtt > max_rtt_timeout) max_rtt_timeout = rtt;  
  if (rtt > initial_rtt_timeout) initial_rtt_timeout = rtt;
}

void NmapOps::setInitialRttTimeout(int rtt) 
{ 
  if (rtt <= 0) fatal("%s: initial round trip time must be greater than 0", __func__);
  initial_rtt_timeout = rtt; 
  if (rtt > max_rtt_timeout) max_rtt_timeout = rtt;  
  if (rtt < min_rtt_timeout) min_rtt_timeout = rtt;
}

void NmapOps::setMaxRetransmissions(int max_retransmit)
{
    if (max_retransmit < 0)
        fatal("%s: must be positive", __func__);
    max_retransmissions = max_retransmit;
}


void NmapOps::setMinHostGroupSz(unsigned int sz) {
  if (sz > max_host_group_sz)
    fatal("Minimum host group size may not be set to greater than maximum size (currently %d)\n", max_host_group_sz);
  min_host_group_sz = sz;
}

void NmapOps::setMaxHostGroupSz(unsigned int sz) {
  if (sz < min_host_group_sz)
    fatal("Maximum host group size may not be set to less than the maximum size (currently %d)\n", min_host_group_sz);
  if (sz <= 0)
    fatal("Max host size must be at least 1");
  max_host_group_sz = sz;
}

  /* Sets the Name of the XML stylesheet to be printed in XML output.
     If this is never called, a default stylesheet distributed with
     Nmap is used.  If you call it with NULL as the xslname, no
     stylesheet line is printed. */
void NmapOps::setXSLStyleSheet(const char *xslname) {
  if (xsl_stylesheet) free(xsl_stylesheet);
  xsl_stylesheet = xslname? strdup(xslname) : NULL;
  xsl_stylesheet_set = true;
}

/* Returns the full path or URL that should be printed in the XML
   output xml-stylesheet element.  Returns NULL if the whole element
   should be skipped */
char *NmapOps::XSLStyleSheet() {
  char tmpxsl[MAXPATHLEN];

  if (xsl_stylesheet_set)
    return xsl_stylesheet;

  if (nmap_fetchfile(tmpxsl, sizeof(tmpxsl), "nmap.xsl") == 1) {
    xsl_stylesheet = filename_to_url(tmpxsl);
  } else {
#if WIN32
    /* Use a relative URL on Windows if nmap_fetchfile failed. It won't work,
       but it gives a clue that there is an nmap.xsl somewhere. */
    Strncpy(tmpxsl, "nmap.xsl", sizeof(tmpxsl));
    xsl_stylesheet = strdup(tmpxsl);
#else
    Snprintf(tmpxsl, sizeof(tmpxsl), "%s/nmap.xsl", NMAPDATADIR);
    xsl_stylesheet = filename_to_url(tmpxsl);
#endif
  }

  return xsl_stylesheet;
}

void NmapOps::setSpoofMACAddress(u8 *mac_data) {
  memcpy(spoof_mac, mac_data, 6);
  spoof_mac_set = true;
}

#ifndef NOLUA
void NmapOps::chooseScripts(char* argument) {
	char *p;

	for (;;) {
		p = strchr(argument, ',');
		if (p == NULL) {
			chosenScripts.push_back(std::string(argument));
			break;
		} else {
			chosenScripts.push_back(std::string(argument, p - argument));
			argument = p + 1;
		}
	}
}
#endif