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nmap/nmap.h

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/***************************************************************************
* nmap.h -- 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.c *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2013 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 ("GPL"), BUT ONLY WITH ALL OF THE CLARIFICATIONS *
* AND EXCEPTIONS DESCRIBED HEREIN. 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@nmap.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 "derivative 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 with any software or content covered by this license *
* ("Covered Software"): *
* *
* o Integrates source code from Covered Software. *
* *
* o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
* or nmap-service-probes. *
* *
* o Is designed specifically to execute Covered Software and parse the *
* results (as opposed to typical shell or execution-menu apps, which will *
* execute anything you tell them to). *
* *
* o Includes Covered Software in a proprietary executable installer. The *
* installers produced by InstallShield are an example of this. Including *
* Nmap with other software in compressed or archival form does not *
* trigger this provision, provided appropriate open source decompression *
* or de-archiving software is widely available for no charge. For the *
* purposes of this license, an installer is considered to include Covered *
* Software even if it actually retrieves a copy of Covered Software from *
* another source during runtime (such as by downloading it from the *
* Internet). *
* *
* o Links (statically or dynamically) to a library which does any of the *
* above. *
* *
* o Executes a helper program, module, or script to do any of the above. *
* *
* This list is not exclusive, but is meant to clarify our interpretation *
* of derived works with some common examples. Other people may interpret *
* the plain GPL differently, so we consider this a special exception to *
* the GPL that we apply to Covered Software. Works which meet any of *
* these conditions must conform to all of the terms of this license, *
* particularly including the GPL Section 3 requirements of providing *
* source code and allowing free redistribution of the work as a whole. *
* *
* As another 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. *
* *
* Any redistribution of Covered Software, including any derived works, *
* must obey and carry forward all of the terms of this license, including *
* obeying all GPL rules and restrictions. For example, source code of *
* the whole work must be provided and free redistribution must be *
* allowed. All GPL references to "this License", are to be treated as *
* including the terms and conditions of this license text as well. *
* *
* Because this license imposes special exceptions to the GPL, Covered *
* Work may not be combined (even as part of a larger work) with plain GPL *
* software. The terms, conditions, and exceptions of this license must *
* be included as well. This license is incompatible with some other open *
* source licenses as well. In some cases we can relicense portions of *
* Nmap or grant special permissions to use it in other open source *
* software. Please contact fyodor@nmap.org with any such requests. *
* Similarly, we don't incorporate incompatible open source software into *
* Covered Software without special permission from the copyright holders. *
* *
* If you have any questions about the licensing restrictions on using *
* Nmap in other works, are 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@nmap.com for further *
* information. *
* *
* If you have received a written license agreement or contract for *
* Covered Software stating terms other than these, you may choose to use *
* and redistribute Covered Software under those terms instead of these. *
* *
* 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 the dev@nmap.org mailing list 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 Nmap *
* license file for more details (it's in a COPYING file included with *
* Nmap, and also available from https://svn.nmap.org/nmap/COPYING *
* *
***************************************************************************/
/* $Id$ */
#ifndef NMAP_H
#define NMAP_H
/************************INCLUDES**********************************/
#ifdef WIN32
#include "mswin32\winclude.h"
#endif
#ifdef HAVE_CONFIG_H
#include "nmap_config.h"
#else
#ifdef WIN32
#include "nmap_winconfig.h"
#endif /* WIN32 */
#endif /* HAVE_CONFIG_H */
#ifdef __amigaos__
#include "nmap_amigaos.h"
#endif
#include <nbase.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#else
void *malloc();
void *realloc();
#endif
#if STDC_HEADERS || HAVE_STRING_H
#include <string.h>
#if !STDC_HEADERS && HAVE_MEMORY_H
#include <memory.h>
#endif
#endif
#if HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_BSTRING_H
#include <bstring.h>
#endif
#include <ctype.h>
#include <sys/types.h>
#ifndef WIN32 /* from nmapNT -- seems to work */
#include <sys/wait.h>
#endif /* !WIN32 */
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h> /* Defines MAXHOSTNAMELEN on BSD*/
#endif
#include <stdio.h>
#if HAVE_RPC_TYPES_H
#include <rpc/types.h>
#endif
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <sys/stat.h>
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <errno.h>
#if HAVE_NETDB_H
#include <netdb.h>
#endif
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <fcntl.h>
#include <stdarg.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
/* For systems without SCTP in netinet/in.h, such as MacOS X */
#ifndef IPPROTO_SCTP
#define IPPROTO_SCTP 132
#endif
/* Keep assert() defined for security reasons */
#undef NDEBUG
#include <math.h>
#include <assert.h>
#if HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
/*#include <net/if_arp.h> *//* defines struct arphdr needed for if_ether.h */
// #if HAVE_NET_IF_H
// #ifndef NET_IF_H /* why doesn't OpenBSD do this?! */
// #include <net/if.h>
// #define NET_IF_H
// #endif
// #endif
// #if HAVE_NETINET_IF_ETHER_H
// #ifndef NETINET_IF_ETHER_H
// #include <netinet/if_ether.h>
// #define NETINET_IF_ETHER_H
// #endif /* NETINET_IF_ETHER_H */
// #endif /* HAVE_NETINET_IF_ETHER_H */
/******* DEFINES ************/
#ifndef NMAP_VERSION
/* Edit this definition only within the quotes, because it is read from this
file by the makefiles. */
#define NMAP_VERSION "6.46"
#define NMAP_NUM_VERSION "6.0.46.0"
#endif
/* The version number of updates retrieved by the nmap-update
program. It can be different (but should always be the same or
earlier) than NMAP_VERSION. */
#define NMAP_UPDATE_CHANNEL "6.00"
#define NMAP_XMLOUTPUTVERSION "1.04"
/* User configurable #defines: */
#define MAX_PROBE_PORTS 10 /* How many TCP probe ports are allowed ? */
/* Default number of ports in parallel. Doesn't always involve actual
sockets. Can also adjust with the -M command line option. */
#define MAX_SOCKETS 36
#define MAX_TIMEOUTS MAX_SOCKETS /* How many timed out connection attempts
in a row before we decide the host is
dead? */
#define _STR(X) #X
#define STR(X) _STR(X)
#define DEFAULT_TCP_PROBE_PORT 80 /* The ports TCP ping probes go to if
unspecified by user -- uber hackers
change this to 113 */
#define DEFAULT_TCP_PROBE_PORT_SPEC STR(DEFAULT_TCP_PROBE_PORT)
#define DEFAULT_UDP_PROBE_PORT 40125 /* The port UDP ping probes go to
if unspecified by user */
#define DEFAULT_UDP_PROBE_PORT_SPEC STR(DEFAULT_UDP_PROBE_PORT)
#define DEFAULT_SCTP_PROBE_PORT 80 /* The port SCTP probes go to
if unspecified by
user */
#define DEFAULT_SCTP_PROBE_PORT_SPEC STR(DEFAULT_SCTP_PROBE_PORT)
#define DEFAULT_PROTO_PROBE_PORT_SPEC "1,2,4" /* The IPProto ping probes to use
if unspecified by user */
#define MAX_DECOYS 128 /* How many decoys are allowed? */
#define MAXFALLBACKS 20 /* How many comma separated fallbacks are allowed in the service-probes file? */
/* Default maximum send delay between probes to the same host */
#ifndef MAX_TCP_SCAN_DELAY
#define MAX_TCP_SCAN_DELAY 1000
#endif
#ifndef MAX_UDP_SCAN_DELAY
#define MAX_UDP_SCAN_DELAY 1000
#endif
#ifndef MAX_SCTP_SCAN_DELAY
#define MAX_SCTP_SCAN_DELAY 1000
#endif
/* Maximum number of extra hostnames, OSs, and devices, we
consider when outputting the extra service info fields */
#define MAX_SERVICE_INFO_FIELDS 5
/* We wait at least 100 ms for a response by default - while that
seems aggressive, waiting too long can cause us to fail to detect
drops until many probes later on extremely low-latency
networks (such as localhost scans). */
#ifndef MIN_RTT_TIMEOUT
#define MIN_RTT_TIMEOUT 100
#endif
#ifndef MAX_RTT_TIMEOUT
#define MAX_RTT_TIMEOUT 10000 /* Never allow more than 10 secs for packet round
trip */
#endif
#define INITIAL_RTT_TIMEOUT 1000 /* Allow 1 second initially for packet responses */
#define INITIAL_ARP_RTT_TIMEOUT 200 /* The initial timeout for ARP is lower */
#ifndef MAX_RETRANSMISSIONS
#define MAX_RETRANSMISSIONS 10 /* 11 probes to port at maximum */
#endif
/* Number of hosts we pre-ping and then scan. We do a lot more if
randomize_hosts is set. Every one you add to this leads to ~1K of
extra always-resident memory in nmap */
#define PING_GROUP_SZ 4096
/* DO NOT change stuff after this point */
#define UC(b) (((int)b)&0xff)
#define SA struct sockaddr /*Ubertechnique from R. Stevens */
#define HOST_UNKNOWN 0
#define HOST_UP 1
#define HOST_DOWN 2
#define PINGTYPE_UNKNOWN 0
#define PINGTYPE_NONE 1
#define PINGTYPE_ICMP_PING 2
#define PINGTYPE_ICMP_MASK 4
#define PINGTYPE_ICMP_TS 8
#define PINGTYPE_TCP 16
#define PINGTYPE_TCP_USE_ACK 32
#define PINGTYPE_TCP_USE_SYN 64
/* # define PINGTYPE_RAWTCP 128 used to be here, but was never used. */
#define PINGTYPE_CONNECTTCP 256
#define PINGTYPE_UDP 512
#define PINGTYPE_ARP 1024
#define PINGTYPE_PROTO 2048
#define PINGTYPE_SCTP_INIT 4096
/* Empirically determined optimum combinations of different numbers of probes:
-PE
-PE -PA80
-PE -PA80 -PS443
-PE -PA80 -PS443 -PP
-PE -PA80 -PS443 -PP -PU40125
We use the four-probe combination. */
#define DEFAULT_IPV4_PING_TYPES (PINGTYPE_ICMP_PING|PINGTYPE_TCP|PINGTYPE_TCP_USE_ACK|PINGTYPE_TCP_USE_SYN|PINGTYPE_ICMP_TS)
#define DEFAULT_IPV6_PING_TYPES (PINGTYPE_ICMP_PING|PINGTYPE_TCP|PINGTYPE_TCP_USE_ACK|PINGTYPE_TCP_USE_SYN)
#define DEFAULT_PING_ACK_PORT_SPEC "80"
#define DEFAULT_PING_SYN_PORT_SPEC "443"
/* For nonroot. */
#define DEFAULT_PING_CONNECT_PORT_SPEC "80,443"
/* How many syn packets do we send to TCP sequence a host? */
#define NUM_SEQ_SAMPLES 6
/* The max length of each line of the subject fingerprint when
wrapped. */
#define FP_RESULT_WRAP_LINE_LEN 74
/* TCP Timestamp Sequence */
#define TS_SEQ_UNKNOWN 0
#define TS_SEQ_ZERO 1 /* At least one of the timestamps we received back was 0 */
#define TS_SEQ_2HZ 2
#define TS_SEQ_100HZ 3
#define TS_SEQ_1000HZ 4
#define TS_SEQ_OTHER_NUM 5
#define TS_SEQ_UNSUPPORTED 6 /* System didn't send back a timestamp */
#define IPID_SEQ_UNKNOWN 0
#define IPID_SEQ_INCR 1 /* simple increment by one each time */
#define IPID_SEQ_BROKEN_INCR 2 /* Stupid MS -- forgot htons() so it
counts by 256 on little-endian platforms */
#define IPID_SEQ_RPI 3 /* Goes up each time but by a "random" positive
increment */
#define IPID_SEQ_RD 4 /* Appears to select IPID using a "random" distributions (meaning it can go up or down) */
#define IPID_SEQ_CONSTANT 5 /* Contains 1 or more sequential duplicates */
#define IPID_SEQ_ZERO 6 /* Every packet that comes back has an IP.ID of 0 (eg Linux 2.4 does this) */
#define IPID_SEQ_INCR_BY_2 7 /* simple increment by two each time */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif
/* Max payload: Worst case is IPv4 with 40bytes of options and TCP with 20
* bytes of options. */
#define MAX_PAYLOAD_ALLOWED 65535-60-40
#ifndef recvfrom6_t
# define recvfrom6_t int
#endif
/********************** LOCAL INCLUDES *****************************/
#include "global_structures.h"
/***********************STRUCTURES**********************************/
/* Moved to global_structures.h */
/***********************PROTOTYPES**********************************/
/* print Interactive usage information */
void printinteractiveusage();
/* port manipulators */
void getpts(const char *expr, struct scan_lists * ports); /* someone stole the name getports()! */
void getpts_simple(const char *origexpr, int range_type,
unsigned short **list, int *count);
void free_scan_lists(struct scan_lists *ports);
/* Renamed main so that interactive mode could preprocess when necessary */
int nmap_main(int argc, char *argv[]);
void nmap_free_mem();
/* general helper functions */
const char *statenum2str(int state);
const char *scantype2str(stype scantype);
void reaper(int signo);
char *seqreport(struct seq_info *seq);
const char *ipidclass2ascii(int seqclass);
const char *tsseqclass2ascii(int seqclass);
/* Convert a TCP sequence prediction difficulty index like 1264386
into a difficulty string like "Worthy Challenge */
const char *seqidx2difficultystr(unsigned long idx);
int nmap_fetchfile(char *filename_returned, int bufferlen, const char *file);
int nmap_fileexistsandisreadable(const char* pathname);
int gather_logfile_resumption_state(char *fname, int *myargc, char ***myargv);
#endif /* NMAP_H */
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