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nmap.cc
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/***************************************************************************
* nmap.cc -- Currently handles some of Nmap's port scanning features as *
* well as the command line user interface. Note that the actual main() *
* function is in main.cc *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2021 Nmap Software LLC ("The Nmap *
* Project"). Nmap is also a registered trademark of the Nmap Project. *
* *
* This program is distributed under the terms of the Nmap Public Source *
* License (NPSL). The exact license text applying to a particular Nmap *
* release or source code control revision is contained in the LICENSE *
* file distributed with that version of Nmap or source code control *
* revision. More Nmap copyright/legal information is available from *
* https://nmap.org/book/man-legal.html, and further information on the *
* NPSL license itself can be found at https://nmap.org/npsl. This header *
* summarizes some key points from the Nmap license, but is no substitute *
* for the actual license text. *
* *
* Nmap is generally free for end users to download and use themselves, *
* including commercial use. It is available from https://nmap.org. *
* *
* The Nmap license generally prohibits companies from using and *
* redistributing Nmap in commercial products, but we sell a special Nmap *
* OEM Edition with a more permissive license and special features for *
* this purpose. See https://nmap.org/oem *
* *
* If you have received a written Nmap license agreement or contract *
* stating terms other than these (such as an Nmap OEM license), you may *
* choose to use and redistribute Nmap under those terms instead. *
* *
* The official Nmap Windows builds include the Npcap software *
* (https://npcap.org) for packet capture and transmission. It is under *
* separate license terms which forbid redistribution without special *
* permission. So the official Nmap Windows builds may not be *
* redistributed without special permission (such as an Nmap OEM *
* license). *
* *
* 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. *
* *
* Source code also allows you to port Nmap to new platforms, fix bugs, *
* and add new features. You are highly encouraged to submit your *
* changes as a Github PR or by email to the dev@nmap.org mailing list *
* for possible incorporation into the main distribution. Unless you *
* specify otherwise, it is understood that you are offering us very *
* broad rights to use your submissions as described in the Nmap Public *
* Source License Contributor Agreement. This is important because we *
* fund the project by selling licenses with various terms, and also *
* because the inability to relicense code has caused devastating *
* problems for other Free Software projects (such as KDE and NASM). *
* *
* The free version of Nmap 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. Warranties, *
* indemnification and commercial support are all available through the *
* Npcap OEM program--see https://nmap.org/oem. *
* *
***************************************************************************/
/* $Id$ */
#ifdef WIN32
#include "winfix.h"
/* This name collides in the following include. */
#undef PS_NONE
#include <shlobj.h>
#endif
#include "nmap.h"
#include "osscan.h"
#include "scan_engine.h"
#include "FPEngine.h"
#include "idle_scan.h"
#include "NmapOps.h"
#include "MACLookup.h"
#include "traceroute.h"
#include "nmap_tty.h"
#include "nmap_ftp.h"
#include "services.h"
#include "targets.h"
#include "tcpip.h"
#include "NewTargets.h"
#include "Target.h"
#include "service_scan.h"
#include "charpool.h"
#include "nmap_error.h"
#include "utils.h"
#include "xml.h"
#include "scan_lists.h"
#include "payload.h"
#ifndef NOLUA
#include "nse_main.h"
#endif
#ifdef HAVE_SIGNAL
#include <signal.h>
#endif
#include <fcntl.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#ifndef IPPROTO_SCTP
#include "libnetutil/netutil.h"
#endif
#if HAVE_OPENSSL
#include <openssl/opensslv.h>
#include <openssl/crypto.h>
#endif
#if HAVE_LIBSSH2
#include <libssh2.h>
#endif
#if HAVE_LIBZ
#include <zlib.h>
#endif
/* To get the version number only. */
#ifdef WIN32
#include "libdnet-stripped/include/dnet_winconfig.h"
#else
#include "libdnet-stripped/include/config.h"
#endif
#define DNET_VERSION VERSION
#ifdef LINUX
/* Check for Windows Subsystem for Linux (WSL) */
#include <sys/utsname.h>
#endif
#include <string>
#include <sstream>
#include <vector>
/* global options */
extern char *optarg;
extern int optind;
extern NmapOps o; /* option structure */
static void display_nmap_version();
/* A mechanism to save argv[0] for code that requires that. */
static const char *program_name = NULL;
void set_program_name(const char *name) {
program_name = name;
}
static const char *get_program_name(void) {
return program_name;
}
/* parse the --scanflags argument. It can be a number >=0 or a string consisting of TCP flag names like "URGPSHFIN". Returns -1 if the argument is invalid. */
static int parse_scanflags(char *arg) {
int flagval = 0;
char *end = NULL;
if (isdigit((int) (unsigned char) arg[0])) {
flagval = strtol(arg, &end, 0);
if (*end || flagval < 0 || flagval > 255)
return -1;
} else {
if (strcasestr(arg, "FIN"))
flagval |= TH_FIN;
if (strcasestr(arg, "SYN"))
flagval |= TH_SYN;
if (strcasestr(arg, "RST") || strcasestr(arg, "RESET"))
flagval |= TH_RST;
if (strcasestr(arg, "PSH") || strcasestr(arg, "PUSH"))
flagval |= TH_PUSH;
if (strcasestr(arg, "ACK"))
flagval |= TH_ACK;
if (strcasestr(arg, "URG"))
flagval |= TH_URG;
if (strcasestr(arg, "ECE"))
flagval |= TH_ECE;
if (strcasestr(arg, "CWR"))
flagval |= TH_CWR;
if (strcasestr(arg, "ALL"))
flagval = 255;
if (strcasestr(arg, "NONE"))
flagval = 0;
}
return flagval;
}
static void printusage() {
printf("%s %s ( %s )\n"
"Usage: nmap [Scan Type(s)] [Options] {target specification}\n"
"TARGET SPECIFICATION:\n"
" Can pass hostnames, IP addresses, networks, etc.\n"
" Ex: scanme.nmap.org, microsoft.com/24, 192.168.0.1; 10.0.0-255.1-254\n"
" -iL <inputfilename>: Input from list of hosts/networks\n"
" -iR <num hosts>: Choose random targets\n"
" --exclude <host1[,host2][,host3],...>: Exclude hosts/networks\n"
" --excludefile <exclude_file>: Exclude list from file\n"
"HOST DISCOVERY:\n"
" -sL: List Scan - simply list targets to scan\n"
" -sn: Ping Scan - disable port scan\n"
" -Pn: Treat all hosts as online -- skip host discovery\n"
" -PS/PA/PU/PY[portlist]: TCP SYN/ACK, UDP or SCTP discovery to given ports\n"
" -PE/PP/PM: ICMP echo, timestamp, and netmask request discovery probes\n"
" -PO[protocol list]: IP Protocol Ping\n"
" -n/-R: Never do DNS resolution/Always resolve [default: sometimes]\n"
" --dns-servers <serv1[,serv2],...>: Specify custom DNS servers\n"
" --system-dns: Use OS's DNS resolver\n"
" --traceroute: Trace hop path to each host\n"
"SCAN TECHNIQUES:\n"
" -sS/sT/sA/sW/sM: TCP SYN/Connect()/ACK/Window/Maimon scans\n"
" -sU: UDP Scan\n"
" -sN/sF/sX: TCP Null, FIN, and Xmas scans\n"
" --scanflags <flags>: Customize TCP scan flags\n"
" -sI <zombie host[:probeport]>: Idle scan\n"
" -sY/sZ: SCTP INIT/COOKIE-ECHO scans\n"
" -sO: IP protocol scan\n"
" -b <FTP relay host>: FTP bounce scan\n"
"PORT SPECIFICATION AND SCAN ORDER:\n"
" -p <port ranges>: Only scan specified ports\n"
" Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080,S:9\n"
" --exclude-ports <port ranges>: Exclude the specified ports from scanning\n"
" -F: Fast mode - Scan fewer ports than the default scan\n"
" -r: Scan ports consecutively - don't randomize\n"
" --top-ports <number>: Scan <number> most common ports\n"
" --port-ratio <ratio>: Scan ports more common than <ratio>\n"
"SERVICE/VERSION DETECTION:\n"
" -sV: Probe open ports to determine service/version info\n"
" --version-intensity <level>: Set from 0 (light) to 9 (try all probes)\n"
" --version-light: Limit to most likely probes (intensity 2)\n"
" --version-all: Try every single probe (intensity 9)\n"
" --version-trace: Show detailed version scan activity (for debugging)\n"
#ifndef NOLUA
"SCRIPT SCAN:\n"
" -sC: equivalent to --script=default\n"
" --script=<Lua scripts>: <Lua scripts> is a comma separated list of\n"
" directories, script-files or script-categories\n"
" --script-args=<n1=v1,[n2=v2,...]>: provide arguments to scripts\n"
" --script-args-file=filename: provide NSE script args in a file\n"
" --script-trace: Show all data sent and received\n"
" --script-updatedb: Update the script database.\n"
" --script-help=<Lua scripts>: Show help about scripts.\n"
" <Lua scripts> is a comma-separated list of script-files or\n"
" script-categories.\n"
#endif
"OS DETECTION:\n"
" -O: Enable OS detection\n"
" --osscan-limit: Limit OS detection to promising targets\n"
" --osscan-guess: Guess OS more aggressively\n"
"TIMING AND PERFORMANCE:\n"
" Options which take <time> are in seconds, or append 'ms' (milliseconds),\n"
" 's' (seconds), 'm' (minutes), or 'h' (hours) to the value (e.g. 30m).\n"
" -T<0-5>: Set timing template (higher is faster)\n"
" --min-hostgroup/max-hostgroup <size>: Parallel host scan group sizes\n"
" --min-parallelism/max-parallelism <numprobes>: Probe parallelization\n"
" --min-rtt-timeout/max-rtt-timeout/initial-rtt-timeout <time>: Specifies\n"
" probe round trip time.\n"
" --max-retries <tries>: Caps number of port scan probe retransmissions.\n"
" --host-timeout <time>: Give up on target after this long\n"
" --scan-delay/--max-scan-delay <time>: Adjust delay between probes\n"
" --min-rate <number>: Send packets no slower than <number> per second\n"
" --max-rate <number>: Send packets no faster than <number> per second\n"
"FIREWALL/IDS EVASION AND SPOOFING:\n"
" -f; --mtu <val>: fragment packets (optionally w/given MTU)\n"
" -D <decoy1,decoy2[,ME],...>: Cloak a scan with decoys\n"
" -S <IP_Address>: Spoof source address\n"
" -e <iface>: Use specified interface\n"
" -g/--source-port <portnum>: Use given port number\n"
" --proxies <url1,[url2],...>: Relay connections through HTTP/SOCKS4 proxies\n"
" --data <hex string>: Append a custom payload to sent packets\n"
" --data-string <string>: Append a custom ASCII string to sent packets\n"
" --data-length <num>: Append random data to sent packets\n"
" --ip-options <options>: Send packets with specified ip options\n"
" --ttl <val>: Set IP time-to-live field\n"
" --spoof-mac <mac address/prefix/vendor name>: Spoof your MAC address\n"
" --badsum: Send packets with a bogus TCP/UDP/SCTP checksum\n"
"OUTPUT:\n"
" -oN/-oX/-oS/-oG <file>: Output scan in normal, XML, s|<rIpt kIddi3,\n"
" and Grepable format, respectively, to the given filename.\n"
" -oA <basename>: Output in the three major formats at once\n"
" -v: Increase verbosity level (use -vv or more for greater effect)\n"
" -d: Increase debugging level (use -dd or more for greater effect)\n"
" --reason: Display the reason a port is in a particular state\n"
" --open: Only show open (or possibly open) ports\n"
" --packet-trace: Show all packets sent and received\n"
" --iflist: Print host interfaces and routes (for debugging)\n"
" --append-output: Append to rather than clobber specified output files\n"
" --resume <filename>: Resume an aborted scan\n"
" --noninteractive: Disable runtime interactions via keyboard\n"
" --stylesheet <path/URL>: XSL stylesheet to transform XML output to HTML\n"
" --webxml: Reference stylesheet from Nmap.Org for more portable XML\n"
" --no-stylesheet: Prevent associating of XSL stylesheet w/XML output\n"
"MISC:\n"
" -6: Enable IPv6 scanning\n"
" -A: Enable OS detection, version detection, script scanning, and traceroute\n"
" --datadir <dirname>: Specify custom Nmap data file location\n"
" --send-eth/--send-ip: Send using raw ethernet frames or IP packets\n"
" --privileged: Assume that the user is fully privileged\n"
" --unprivileged: Assume the user lacks raw socket privileges\n"
" -V: Print version number\n"
" -h: Print this help summary page.\n"
"EXAMPLES:\n"
" nmap -v -A scanme.nmap.org\n"
" nmap -v -sn 192.168.0.0/16 10.0.0.0/8\n"
" nmap -v -iR 10000 -Pn -p 80\n"
"SEE THE MAN PAGE (https://nmap.org/book/man.html) FOR MORE OPTIONS AND EXAMPLES\n", NMAP_NAME, NMAP_VERSION, NMAP_URL);
}
#ifdef WIN32
static void check_setugid(void) {
}
#else
/* Show a warning when running setuid or setgid, as this allows code execution
(for example NSE scripts) as the owner/group. */
static void check_setugid(void) {
if (getuid() != geteuid())
error("WARNING: Running Nmap setuid, as you are doing, is a major security risk.\n");
if (getgid() != getegid())
error("WARNING: Running Nmap setgid, as you are doing, is a major security risk.\n");
}
#endif
static void insert_port_into_merge_list(unsigned short *mlist,
int *merged_port_count,
unsigned short p) {
int i;
// make sure the port isn't already in the list
for (i = 0; i < *merged_port_count; i++) {
if (mlist[i] == p) {
return;
}
}
mlist[*merged_port_count] = p;
(*merged_port_count)++;
}
static unsigned short *merge_port_lists(unsigned short *port_list1, int count1,
unsigned short *port_list2, int count2,
int *merged_port_count) {
int i;
unsigned short *merged_port_list = NULL;
*merged_port_count = 0;
merged_port_list =
(unsigned short *) safe_zalloc((count1 + count2) * sizeof(unsigned short));
for (i = 0; i < count1; i++) {
insert_port_into_merge_list(merged_port_list,
merged_port_count,
port_list1[i]);
}
for (i = 0; i < count2; i++) {
insert_port_into_merge_list(merged_port_list,
merged_port_count,
port_list2[i]);
}
// if there were duplicate ports then we can save some memory
if (*merged_port_count < (count1 + count2)) {
merged_port_list = (unsigned short*)
safe_realloc(merged_port_list,
(*merged_port_count) * sizeof(unsigned short));
}
return merged_port_list;
}
void validate_scan_lists(scan_lists &vports, NmapOps &vo) {
if (vo.pingtype == PINGTYPE_UNKNOWN) {
if (vo.isr00t) {
if (vo.pf() == PF_INET) {
vo.pingtype = DEFAULT_IPV4_PING_TYPES;
} else {
vo.pingtype = DEFAULT_IPV6_PING_TYPES;
}
getpts_simple(DEFAULT_PING_ACK_PORT_SPEC, SCAN_TCP_PORT,
&vports.ack_ping_ports, &vports.ack_ping_count);
getpts_simple(DEFAULT_PING_SYN_PORT_SPEC, SCAN_TCP_PORT,
&vports.syn_ping_ports, &vports.syn_ping_count);
} else {
vo.pingtype = PINGTYPE_TCP; // if nonr00t
getpts_simple(DEFAULT_PING_CONNECT_PORT_SPEC, SCAN_TCP_PORT,
&vports.syn_ping_ports, &vports.syn_ping_count);
}
}
if ((vo.pingtype & PINGTYPE_TCP) && (!vo.isr00t)) {
// We will have to do a connect() style ping
// Pretend we wanted SYN probes all along.
if (vports.ack_ping_count > 0) {
// Combine the ACK and SYN ping port lists since they both reduce to
// SYN probes in this case
unsigned short *merged_port_list;
int merged_port_count;
merged_port_list = merge_port_lists(
vports.syn_ping_ports, vports.syn_ping_count,
vports.ack_ping_ports, vports.ack_ping_count,
&merged_port_count);
// clean up a bit
free(vports.syn_ping_ports);
free(vports.ack_ping_ports);
vports.syn_ping_count = merged_port_count;
vports.syn_ping_ports = merged_port_list;
vports.ack_ping_count = 0;
vports.ack_ping_ports = NULL;
}
vo.pingtype &= ~PINGTYPE_TCP_USE_ACK;
vo.pingtype |= PINGTYPE_TCP_USE_SYN;
}
if (!vo.isr00t) {
if (vo.pingtype & (PINGTYPE_ICMP_PING | PINGTYPE_ICMP_MASK | PINGTYPE_ICMP_TS)) {
error("Warning: You are not root -- using TCP pingscan rather than ICMP");
vo.pingtype = PINGTYPE_TCP;
if (vports.syn_ping_count == 0) {
getpts_simple(DEFAULT_TCP_PROBE_PORT_SPEC, SCAN_TCP_PORT, &vports.syn_ping_ports, &vports.syn_ping_count);
assert(vports.syn_ping_count > 0);
}
}
}
}
struct ftpinfo ftp = get_default_ftpinfo();
/* A list of targets to be displayed by the --route-dst debugging option. */
static std::vector<std::string> route_dst_hosts;
struct scan_lists ports = { 0 };
/* This struct is used is a temporary storage place that holds options that
can't be correctly parsed and interpreted before the entire command line has
been read. Examples are -6 and -S. Trying to set the source address without
knowing the address family first could result in a failure if you pass an
IPv6 address and the address family is still IPv4. */
static struct delayed_options {
public:
delayed_options() {
this->pre_max_parallelism = -1;
this->pre_scan_delay = -1;
this->pre_max_scan_delay = -1;
this->pre_init_rtt_timeout = -1;
this->pre_min_rtt_timeout = -1;
this->pre_max_rtt_timeout = -1;
this->pre_max_retries = -1;
this->pre_host_timeout = -1;
#ifndef NOLUA
this->pre_scripttimeout = -1;
#endif
this->iflist = false;
this->advanced = false;
this->af = AF_UNSPEC;
this->decoys = false;
this->raw_scan_options = false;
}
// Pre-specified timing parameters.
// These are stored here during the parsing of the arguments so that we can
// set the defaults specified by any timing template options (-T2, etc) BEFORE
// any of these. In other words, these always take precedence over the templates.
int pre_max_parallelism, pre_scan_delay, pre_max_scan_delay;
int pre_init_rtt_timeout, pre_min_rtt_timeout, pre_max_rtt_timeout;
int pre_max_retries;
long pre_host_timeout;
#ifndef NOLUA
double pre_scripttimeout;
#endif
char *machinefilename, *kiddiefilename, *normalfilename, *xmlfilename;
bool iflist, decoys, advanced, raw_scan_options;
char *exclude_spec, *exclude_file;
char *spoofSource, *decoy_arguments;
const char *spoofmac;
int af;
std::vector<std::string> verbose_out;
void warn_deprecated (const char *given, const char *replacement) {
std::ostringstream os;
os << "Warning: The -" << given << " option is deprecated. Please use -" << replacement;
this->verbose_out.push_back(os.str());
}
} delayed_options;
struct tm local_time;
static void test_file_name(const char *filename, const char *option) {
if (filename[0] == '-' && filename[1] != '\0') {
fatal("Output filename begins with '-'. Try '-%s ./%s' if you really want it to be named as such.", option, filename);
} else if (strcmp(option, "o") == 0 && strchr("NAXGS", filename[0])) {
fatal("You are using a deprecated option in a dangerous way. Did you mean: -o%c %s", filename[0], filename + 1);
} else if (filename[0] == '-' && strcmp(option,"oA") == 0) {
fatal("Cannot display multiple output types to stdout.");
}
}
void parse_options(int argc, char **argv) {
char *p;
int arg;
long l;
double d;
char *endptr = NULL;
char errstr[256];
int option_index;
#ifdef WORDS_BIGENDIAN
int k[]={2037345391,1935892846,0,1279608146,1331241034,1162758985,1314070817,554303488,1869291630,1768383852};
#else
int k[]={1869377401,1851876211,0,1380271436,1243633999,1229672005,555832142,2593,1847618415,1818584937};
#endif
struct option long_options[] = {
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{"datadir", required_argument, 0, 0},
{"servicedb", required_argument, 0, 0},
{"versiondb", required_argument, 0, 0},
{"debug", optional_argument, 0, 'd'},
{"help", no_argument, 0, 'h'},
{"iflist", no_argument, 0, 0},
{"release-memory", no_argument, 0, 0},
{"nogcc", no_argument, 0, 0},
{"max-os-tries", required_argument, 0, 0},
{"max-parallelism", required_argument, 0, 'M'},
{"min-parallelism", required_argument, 0, 0},
{"timing", required_argument, 0, 'T'},
{"max-rtt-timeout", required_argument, 0, 0},
{"min-rtt-timeout", required_argument, 0, 0},
{"initial-rtt-timeout", required_argument, 0, 0},
{"excludefile", required_argument, 0, 0},
{"exclude", required_argument, 0, 0},
{"max-hostgroup", required_argument, 0, 0},
{"min-hostgroup", required_argument, 0, 0},
{"open", no_argument, 0, 0},
{"scanflags", required_argument, 0, 0},
{"defeat-rst-ratelimit", no_argument, 0, 0},
{"defeat-icmp-ratelimit", no_argument, 0, 0},
{"host-timeout", required_argument, 0, 0},
{"scan-delay", required_argument, 0, 0},
{"max-scan-delay", required_argument, 0, 0},
{"max-retries", required_argument, 0, 0},
{"oA", required_argument, 0, 0},
{"oN", required_argument, 0, 0},
{"oM", required_argument, 0, 0},
{"oG", required_argument, 0, 0},
{"oS", required_argument, 0, 0},
{"oH", required_argument, 0, 0},
{"oX", required_argument, 0, 0},
{"iL", required_argument, 0, 0},
{"iR", required_argument, 0, 0},
{"sI", required_argument, 0, 0},
{"source-port", required_argument, 0, 'g'},
{"randomize-hosts", no_argument, 0, 0},
{"nsock-engine", required_argument, 0, 0},
{"proxies", required_argument, 0, 0},
{"proxy", required_argument, 0, 0},
{"discovery-ignore-rst", no_argument, 0, 0},
{"osscan-limit", no_argument, 0, 0}, /* skip OSScan if no open ports */
{"osscan-guess", no_argument, 0, 0}, /* More guessing flexibility */
{"fuzzy", no_argument, 0, 0}, /* Alias for osscan_guess */
{"packet-trace", no_argument, 0, 0}, /* Display all packets sent/rcv */
{"version-trace", no_argument, 0, 0}, /* Display -sV related activity */
{"data", required_argument, 0, 0},
{"data-string", required_argument, 0, 0},
{"data-length", required_argument, 0, 0},
{"send-eth", no_argument, 0, 0},
{"send-ip", no_argument, 0, 0},
{"stylesheet", required_argument, 0, 0},
{"no-stylesheet", no_argument, 0, 0},
{"webxml", no_argument, 0, 0},
{"rH", no_argument, 0, 0},
{"vv", no_argument, 0, 0},
{"ff", no_argument, 0, 0},
{"privileged", no_argument, 0, 0},
{"unprivileged", no_argument, 0, 0},
{"mtu", required_argument, 0, 0},
{"append-output", no_argument, 0, 0},
{"noninteractive", no_argument, 0, 0},
{"spoof-mac", required_argument, 0, 0},
{"thc", no_argument, 0, 0},
{"badsum", no_argument, 0, 0},
{"ttl", required_argument, 0, 0}, /* Time to live */
{"traceroute", no_argument, 0, 0},
{"reason", no_argument, 0, 0},
{"allports", no_argument, 0, 0},
{"version-intensity", required_argument, 0, 0},
{"version-light", no_argument, 0, 0},
{"version-all", no_argument, 0, 0},
{"system-dns", no_argument, 0, 0},
{"resolve-all", no_argument, 0, 0},
{"unique", no_argument, 0, 0},
{"log-errors", no_argument, 0, 0},
{"deprecated-xml-osclass", no_argument, 0, 0},
{(char*)k, no_argument, 0, 0},
{"dns-servers", required_argument, 0, 0},
{"port-ratio", required_argument, 0, 0},
{"exclude-ports", required_argument, 0, 0},
{"top-ports", required_argument, 0, 0},
#ifndef NOLUA
{"script", required_argument, 0, 0},
{"script-trace", no_argument, 0, 0},
{"script-updatedb", no_argument, 0, 0},
{"script-args", required_argument, 0, 0},
{"script-args-file", required_argument, 0, 0},
{"script-help", required_argument, 0, 0},
{"script-timeout", required_argument, 0, 0},
#endif
{"ip-options", required_argument, 0, 0},
{"min-rate", required_argument, 0, 0},
{"max-rate", required_argument, 0, 0},
{"adler32", no_argument, 0, 0},
{"stats-every", required_argument, 0, 0},
{"disable-arp-ping", no_argument, 0, 0},
{"route-dst", required_argument, 0, 0},
{"resume", required_argument, 0, 0},
{0, 0, 0, 0}
};
/* Users have trouble with editors munging ascii hyphens into any of various
* dashes. We'll check that none of these is in the command-line first: */
for (arg=1; arg < argc; arg++) {
// Just look at the first character of each.
switch(argv[arg][0]) {
case '\xe2': // UTF-8, have to look farther
// U+2010 through U+2015 are the most likely
if (argv[arg][1] != '\x80'
|| argv[arg][2] < '\x90'
|| argv[arg][2] > '\x95')
break;
case '\x96': // Windows 12** en dash
case '\x97': // Windows 12** em dash
fatal("Unparseable option (dash, not '-') in argument %d", arg);
default:
break;
}
}
/* OK, lets parse these args! */
optind = 1; /* so it can be called multiple times */
while ((arg = getopt_long_only(argc, argv, "46Ab:D:d::e:Ffg:hIi:M:m:nO::o:P::p:qRrS:s::T:Vv::", long_options, &option_index)) != EOF) {
switch (arg) {
case 0:
#ifndef NOLUA
if (strcmp(long_options[option_index].name, "script") == 0) {
o.script = true;
o.chooseScripts(optarg);
} else if (strcmp(long_options[option_index].name, "script-args") == 0) {
o.scriptargs = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "script-args-file") == 0) {
o.scriptargsfile = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "script-trace") == 0) {
o.scripttrace = true;
} else if (strcmp(long_options[option_index].name, "script-updatedb") == 0) {
o.scriptupdatedb = true;
} else if (strcmp(long_options[option_index].name, "script-help") == 0) {
o.scripthelp = true;
o.chooseScripts(optarg);
} else if (strcmp(long_options[option_index].name, "script-timeout") == 0) {
d = tval2secs(optarg);
if (d < 0 || d > LONG_MAX)
fatal("Bogus --script-timeout argument specified");
delayed_options.pre_scripttimeout = d;
} else
#endif
if (strcmp(long_options[option_index].name, "max-os-tries") == 0) {
l = atoi(optarg);
if (l < 1 || l > 50)
fatal("Bogus --max-os-tries argument specified, must be between 1 and 50 (inclusive)");
o.setMaxOSTries(l);
} else if (strcmp(long_options[option_index].name, "max-rtt-timeout") == 0) {
l = tval2msecs(optarg);
if (l < 5)
fatal("Bogus --max-rtt-timeout argument specified, must be at least 5ms");
if (l >= 50 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --max-rtt-timeout is seconds, so your time of \"%s\" is %g seconds. Use \"%sms\" for %g milliseconds.", optarg, l / 1000.0, optarg, l / 1000.0);
if (l < 20)
error("WARNING: You specified a round-trip time timeout (%ld ms) that is EXTRAORDINARILY SMALL. Accuracy may suffer.", l);
delayed_options.pre_max_rtt_timeout = l;
} else if (strcmp(long_options[option_index].name, "min-rtt-timeout") == 0) {
l = tval2msecs(optarg);
if (l < 0)
fatal("Bogus --min-rtt-timeout argument specified");
if (l >= 50 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --min-rtt-timeout is seconds, so your time of \"%s\" is %g seconds. Use \"%sms\" for %g milliseconds.", optarg, l / 1000.0, optarg, l / 1000.0);
delayed_options.pre_min_rtt_timeout = l;
} else if (strcmp(long_options[option_index].name, "initial-rtt-timeout") == 0) {
l = tval2msecs(optarg);
if (l <= 0)
fatal("Bogus --initial-rtt-timeout argument specified. Must be positive");
if (l >= 50 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --initial-rtt-timeout is seconds, so your time of \"%s\" is %g seconds. Use \"%sms\" for %g milliseconds.", optarg, l / 1000.0, optarg, l / 1000.0);
delayed_options.pre_init_rtt_timeout = l;
} else if (strcmp(long_options[option_index].name, "excludefile") == 0) {
delayed_options.exclude_file = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "exclude") == 0) {
delayed_options.exclude_spec = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "max-hostgroup") == 0) {
o.setMaxHostGroupSz(atoi(optarg));
} else if (strcmp(long_options[option_index].name, "min-hostgroup") == 0) {
o.setMinHostGroupSz(atoi(optarg));
if (atoi(optarg) > 100)
error("Warning: You specified a highly aggressive --min-hostgroup.");
} else if (strcmp(long_options[option_index].name, "open") == 0) {
o.setOpenOnly(true);
// If they only want open, don't spend extra time (potentially) distinguishing closed from filtered.
o.defeat_rst_ratelimit = true;
} else if (strcmp(long_options[option_index].name, "scanflags") == 0) {
delayed_options.raw_scan_options = true;
o.scanflags = parse_scanflags(optarg);
if (o.scanflags < 0) {
fatal("--scanflags option must be a number between 0 and 255 (inclusive) or a string like \"URGPSHFIN\".");
}
} else if (strcmp(long_options[option_index].name, "iflist") == 0) {
delayed_options.iflist = true;
} else if (strcmp(long_options[option_index].name, "nogcc") == 0) {
o.nogcc = true;
} else if (strcmp(long_options[option_index].name, "release-memory") == 0) {
o.release_memory = true;
} else if (strcmp(long_options[option_index].name, "min-parallelism") == 0) {
o.min_parallelism = atoi(optarg);
if (o.min_parallelism < 1)
fatal("Argument to --min-parallelism must be at least 1!");
if (o.min_parallelism > 100) {
error("Warning: Your --min-parallelism option is pretty high! This can hurt reliability.");
}
} else if (strcmp(long_options[option_index].name, "host-timeout") == 0) {
l = tval2msecs(optarg);
if (l < 0)
fatal("Bogus --host-timeout argument specified");
// if (l == 0) this is the default "no timeout" value, overriding timing template
if (l >= 10000 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --host-timeout is seconds, so your time of \"%s\" is %.1f hours. If this is what you want, use \"%ss\".", optarg, l / 1000.0 / 60 / 60, optarg);
delayed_options.pre_host_timeout = l;
} else if (strcmp(long_options[option_index].name, "ttl") == 0) {
delayed_options.raw_scan_options = true;
o.ttl = atoi(optarg);
if (o.ttl < 0 || o.ttl > 255) {
fatal("ttl option must be a number between 0 and 255 (inclusive)");
}
} else if (strcmp(long_options[option_index].name, "datadir") == 0) {
o.datadir = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "servicedb") == 0) {
o.requested_data_files["nmap-services"] = optarg;
o.fastscan = true;
} else if (strcmp(long_options[option_index].name, "versiondb") == 0) {
o.requested_data_files["nmap-service-probes"] = optarg;
} else if (strcmp(long_options[option_index].name, "append-output") == 0) {
o.append_output = true;
} else if (strcmp(long_options[option_index].name, "noninteractive") == 0) {
o.noninteractive = true;
} else if (strcmp(long_options[option_index].name, "spoof-mac") == 0) {
/* I need to deal with this later, once I'm sure that I have output
files set up, --datadir, etc. */
delayed_options.spoofmac = optarg;
delayed_options.raw_scan_options = true;
} else if (strcmp(long_options[option_index].name, "allports") == 0) {
o.override_excludeports = true;
} else if (strcmp(long_options[option_index].name, "version-intensity") == 0) {
o.version_intensity = atoi(optarg);
if (o.version_intensity < 0 || o.version_intensity > 9)
fatal("version-intensity must be between 0 and 9");
} else if (strcmp(long_options[option_index].name, "version-light") == 0) {
o.version_intensity = 2;
} else if (strcmp(long_options[option_index].name, "version-all") == 0) {
o.version_intensity = 9;
} else if (strcmp(long_options[option_index].name, "scan-delay") == 0) {
l = tval2msecs(optarg);
if (l < 0)
fatal("Bogus --scan-delay argument specified.");
// if (l == 0) this is the default "no delay" value, overriding timing template
if (l >= 100 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --scan-delay is seconds, so your time of \"%s\" is %.1f minutes. Use \"%sms\" for %g milliseconds.", optarg, l / 1000.0 / 60, optarg, l / 1000.0);
delayed_options.pre_scan_delay = l;
} else if (strcmp(long_options[option_index].name, "defeat-rst-ratelimit") == 0) {
o.defeat_rst_ratelimit = true;
} else if (strcmp(long_options[option_index].name, "defeat-icmp-ratelimit") == 0) {
o.defeat_icmp_ratelimit = true;
} else if (strcmp(long_options[option_index].name, "max-scan-delay") == 0) {
l = tval2msecs(optarg);
if (l < 0)
fatal("Bogus --max-scan-delay argument specified.");
if (l >= 100 * 1000 && tval_unit(optarg) == NULL)
fatal("Since April 2010, the default unit for --max-scan-delay is seconds, so your time of \"%s\" is %.1f minutes. If this is what you want, use \"%ss\".", optarg, l / 1000.0 / 60, optarg);
delayed_options.pre_max_scan_delay = l;
} else if (strcmp(long_options[option_index].name, "max-retries") == 0) {
delayed_options.pre_max_retries = atoi(optarg);
if (delayed_options.pre_max_retries < 0)
fatal("max-retries must be positive");
} else if (strcmp(long_options[option_index].name, "randomize-hosts") == 0
|| strcmp(long_options[option_index].name, "rH") == 0) {
o.randomize_hosts = true;
o.ping_group_sz = PING_GROUP_SZ * 4;
} else if (strcmp(long_options[option_index].name, "nsock-engine") == 0) {
if (nsock_set_default_engine(optarg) < 0)
fatal("Unknown or non-available engine: %s", optarg);
} else if ((strcmp(long_options[option_index].name, "proxies") == 0) || (strcmp(long_options[option_index].name, "proxy") == 0)) {
if (nsock_proxychain_new(optarg, &o.proxy_chain, NULL) < 0)
fatal("Invalid proxy chain specification");
} else if (strcmp(long_options[option_index].name, "discovery-ignore-rst") == 0) {
o.discovery_ignore_rst = true;
} else if (strcmp(long_options[option_index].name, "osscan-limit") == 0) {
o.osscan_limit = true;
} else if (strcmp(long_options[option_index].name, "osscan-guess") == 0
|| strcmp(long_options[option_index].name, "fuzzy") == 0) {
o.osscan_guess = true;
} else if (strcmp(long_options[option_index].name, "packet-trace") == 0) {
o.setPacketTrace(true);
#ifndef NOLUA
o.scripttrace = true;
#endif
} else if (strcmp(long_options[option_index].name, "version-trace") == 0) {
o.setVersionTrace(true);
o.debugging++;
} else if (strcmp(long_options[option_index].name, "data") == 0) {
delayed_options.raw_scan_options = true;
if (o.extra_payload)
fatal("Can't use the --data option(s) multiple times, or together.");
u8 *tempbuff=NULL;
size_t len=0;
if( (tempbuff=parse_hex_string(optarg, &len))==NULL)
fatal("Invalid hex string specified");
else {
o.extra_payload_length = len;
o.extra_payload = (char *) safe_malloc(o.extra_payload_length);
memcpy(o.extra_payload, tempbuff, len);
}
if (o.extra_payload_length > 1400) /* 1500 - IP with opts - TCP with opts. */
error("WARNING: Payloads bigger than 1400 bytes may not be sent successfully.");
} else if (strcmp(long_options[option_index].name, "data-string") == 0) {
delayed_options.raw_scan_options = true;
if (o.extra_payload)
fatal("Can't use the --data option(s) multiple times, or together.");
o.extra_payload_length = strlen(optarg);
if (o.extra_payload_length < 0 || o.extra_payload_length > MAX_PAYLOAD_ALLOWED)
fatal("string length must be between 0 and %d", MAX_PAYLOAD_ALLOWED);
if (o.extra_payload_length > 1400) /* 1500 - IP with opts - TCP with opts. */
error("WARNING: Payloads bigger than 1400 bytes may not be sent successfully.");
o.extra_payload = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "data-length") == 0) {
delayed_options.raw_scan_options = true;
if (o.extra_payload)
fatal("Can't use the --data option(s) multiple times, or together.");
o.extra_payload_length = (int)strtol(optarg, NULL, 10);
if (o.extra_payload_length < 0 || o.extra_payload_length > MAX_PAYLOAD_ALLOWED)
fatal("data-length must be between 0 and %d", MAX_PAYLOAD_ALLOWED);
if (o.extra_payload_length > 1400) /* 1500 - IP with opts - TCP with opts. */
error("WARNING: Payloads bigger than 1400 bytes may not be sent successfully.");
o.extra_payload = (char *) safe_malloc(MAX(o.extra_payload_length, 1));
get_random_bytes(o.extra_payload, o.extra_payload_length);
} else if (strcmp(long_options[option_index].name, "send-eth") == 0) {
o.sendpref = PACKET_SEND_ETH_STRONG;
} else if (strcmp(long_options[option_index].name, "send-ip") == 0) {
o.sendpref = PACKET_SEND_IP_STRONG;
} else if (strcmp(long_options[option_index].name, "stylesheet") == 0) {
o.setXSLStyleSheet(optarg);
} else if (strcmp(long_options[option_index].name, "no-stylesheet") == 0) {
o.setXSLStyleSheet(NULL);
} else if (strcmp(long_options[option_index].name, "system-dns") == 0) {
o.mass_dns = false;
} else if (strcmp(long_options[option_index].name, "dns-servers") == 0) {
o.dns_servers = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "resolve-all") == 0) {
o.resolve_all = true;
} else if (strcmp(long_options[option_index].name, "unique") == 0) {
o.unique = true;
} else if (strcmp(long_options[option_index].name, "log-errors") == 0) {
/*Nmap Log errors is deprecated and is now always enabled by default.
This option is left in so as to not break anybody's scanning scripts.
However it does nothing*/
} else if (strcmp(long_options[option_index].name, "deprecated-xml-osclass") == 0) {
o.deprecated_xml_osclass = true;
} else if (strcmp(long_options[option_index].name, (char*)k) == 0) {
log_write(LOG_STDOUT, "%s", (char*)(k+3));
delayed_options.advanced = true;
} else if (strcmp(long_options[option_index].name, "webxml") == 0) {
o.setXSLStyleSheet("https://svn.nmap.org/nmap/docs/nmap.xsl");
} else if (strcmp(long_options[option_index].name, "oN") == 0) {
test_file_name(optarg, long_options[option_index].name);
delayed_options.normalfilename = logfilename(optarg, &local_time);
} else if (strcmp(long_options[option_index].name, "oG") == 0
|| strcmp(long_options[option_index].name, "oM") == 0) {
test_file_name(optarg, long_options[option_index].name);
delayed_options.machinefilename = logfilename(optarg, &local_time);
if (long_options[option_index].name[1] == 'M')
delayed_options.warn_deprecated("oM", "oG");
} else if (strcmp(long_options[option_index].name, "oS") == 0) {
test_file_name(optarg, long_options[option_index].name);
delayed_options.kiddiefilename = logfilename(optarg, &local_time);
} else if (strcmp(long_options[option_index].name, "oH") == 0) {
fatal("HTML output is not directly supported, though Nmap includes an XSL for transforming XML output into HTML. See the man page.");
} else if (strcmp(long_options[option_index].name, "oX") == 0) {
test_file_name(optarg, long_options[option_index].name);
delayed_options.xmlfilename = logfilename(optarg, &local_time);
} else if (strcmp(long_options[option_index].name, "oA") == 0) {
char buf[MAXPATHLEN];
test_file_name(optarg, long_options[option_index].name);
Snprintf(buf, sizeof(buf), "%s.nmap", logfilename(optarg, &local_time));
delayed_options.normalfilename = strdup(buf);
Snprintf(buf, sizeof(buf), "%s.gnmap", logfilename(optarg, &local_time));
delayed_options.machinefilename = strdup(buf);
Snprintf(buf, sizeof(buf), "%s.xml", logfilename(optarg, &local_time));
delayed_options.xmlfilename = strdup(buf);
} else if (strcmp(long_options[option_index].name, "thc") == 0) {
log_write(LOG_STDOUT, "!!Greets to Van Hauser, Plasmoid, Skyper and the rest of THC!!\n");
exit(0);
} else if (strcmp(long_options[option_index].name, "badsum") == 0) {
delayed_options.raw_scan_options = true;
o.badsum = true;
} else if (strcmp(long_options[option_index].name, "iL") == 0) {
if (o.inputfd) {
fatal("Only one input filename allowed");
}
if (!strcmp(optarg, "-")) {
o.inputfd = stdin;
} else {
o.inputfd = fopen(optarg, "r");
if (!o.inputfd) {
pfatal("Failed to open input file %s for reading", optarg);
}
}
} else if (strcmp(long_options[option_index].name, "iR") == 0) {
o.generate_random_ips = true;
o.max_ips_to_scan = strtoul(optarg, &endptr, 10);
if (*endptr != '\0') {
fatal("ERROR: -iR argument must be the maximum number of random IPs you wish to scan (use 0 for unlimited)");
}
} else if (strcmp(long_options[option_index].name, "sI") == 0) {
o.idlescan = 1;
o.idleProxy = strdup(optarg);
if (strlen(o.idleProxy) > FQDN_LEN) {
fatal("ERROR: -sI argument must be less than %d characters", FQDN_LEN);
}
} else if (strcmp(long_options[option_index].name, "vv") == 0) {
/* Compatibility hack ... ugly */
o.verbose += 2;
if (o.verbose > 10) o.verbose = 10;
} else if (strcmp(long_options[option_index].name, "ff") == 0) {
delayed_options.raw_scan_options = true;
o.fragscan += 16;
} else if (strcmp(long_options[option_index].name, "privileged") == 0) {
o.isr00t = 1;
} else if (strcmp(long_options[option_index].name, "unprivileged") == 0) {
o.isr00t = 0;
} else if (strcmp(long_options[option_index].name, "mtu") == 0) {
delayed_options.raw_scan_options = true;
o.fragscan = atoi(optarg);
if (o.fragscan <= 0 || o.fragscan % 8 != 0)
fatal("Data payload MTU must be >0 and multiple of 8");
} else if (strcmp(long_options[option_index].name, "port-ratio") == 0) {
char *ptr;
o.topportlevel = strtod(optarg, &ptr);
if (!ptr || o.topportlevel < 0 || o.topportlevel >= 1)
fatal("--port-ratio should be between [0 and 1)");
} else if (strcmp(long_options[option_index].name, "exclude-ports") == 0) {
if (o.exclude_portlist)
fatal("Only 1 --exclude-ports option allowed, separate multiple ranges with commas.");
o.exclude_portlist = strdup(optarg);
} else if (strcmp(long_options[option_index].name, "top-ports") == 0) {
char *ptr;
o.topportlevel = strtod(optarg, &ptr);
if (!ptr || o.topportlevel < 1 || ((double)((int)o.topportlevel)) != o.topportlevel)
fatal("--top-ports should be an integer 1 or greater");
} else if (strcmp(long_options[option_index].name, "ip-options") == 0) {
delayed_options.raw_scan_options = true;
o.ipoptions = (u8*) safe_malloc(4 * 10 + 1);
if ((o.ipoptionslen = parse_ip_options(optarg, o.ipoptions, 4 * 10 + 1, &o.ipopt_firsthop, &o.ipopt_lasthop, errstr, sizeof(errstr))) == OP_FAILURE)
fatal("%s", errstr);
if (o.ipoptionslen > 4 * 10)
fatal("Ip options can't be more than 40 bytes long");
if (o.ipoptionslen % 4 != 0)
fatal("Ip options must be multiple of 4 (read length is %i bytes)", o.ipoptionslen);
} else if (strcmp(long_options[option_index].name, "traceroute") == 0) {
o.traceroute = true;
} else if (strcmp(long_options[option_index].name, "reason") == 0) {
o.reason = true;
} else if (strcmp(long_options[option_index].name, "min-rate") == 0) {
if (sscanf(optarg, "%f", &o.min_packet_send_rate) != 1 || o.min_packet_send_rate <= 0.0)
fatal("Argument to --min-rate must be a positive floating-point number");
} else if (strcmp(long_options[option_index].name, "max-rate") == 0) {
if (sscanf(optarg, "%f", &o.max_packet_send_rate) != 1 || o.max_packet_send_rate <= 0.0)
fatal("Argument to --max-rate must be a positive floating-point number");
} else if (strcmp(long_options[option_index].name, "adler32") == 0) {
o.adler32 = true;
} else if (strcmp(long_options[option_index].name, "stats-every") == 0) {
d = tval2secs(optarg);
if (d < 0 || d > LONG_MAX)
fatal("Bogus --stats-every argument specified");
o.stats_interval = d;
} else if (strcmp(long_options[option_index].name, "disable-arp-ping") == 0) {
o.implicitARPPing = false;
} else if (strcmp(long_options[option_index].name, "route-dst") == 0) {
/* The --route-dst debugging option: push these on a list to be