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osscan.h
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/***************************************************************************
* osscan.h -- Routines used for OS detection via TCP/IP fingerprinting. *
* For more information on how this works in Nmap, see my paper at *
* http://www.insecure.org/nmap/nmap-fingerprinting-article.html *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2006 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, and version detection. *
* *
* 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 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-fingerprints 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.) *
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* 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. This list is not exclusive, but is just meant to *
* clarify our interpretation of derived works with some common examples. *
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* *
* We don't consider these to be added restrictions on top of the GPL, but *
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* Torvalds has announced his interpretation of how "derived works" *
* applies to Linux kernel modules. Our interpretation refers only to *
* Nmap - we don't speak for any other GPL products. *
* *
* 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 as well as helping to *
* fund the continued development of Nmap technology. 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 Copying.OpenSSL file, and distribute linked *
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* 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 fyodor@insecure.org for possible incorporation into the main *
* distribution. By sending these changes to Fyodor or one the *
* Insecure.Org development mailing lists, it is assumed that you are *
* offering Fyodor and 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 for more details at *
* http://www.gnu.org/copyleft/gpl.html , or in the COPYING file included *
* with Nmap. *
* *
***************************************************************************/
/* $Id$ */
#ifndef OSSCAN_H
#define OSSCAN_H
#include "nmap.h"
#include "tcpip.h"
#include "global_structures.h"
#include "FingerPrintResults.h"
#define OSSCAN_SUCCESS 0
#define OSSCAN_NOMATCHES -1
#define OSSCAN_TOOMANYMATCHES -2
/* We won't even consider matches with a lower accuracy than this */
#define OSSCAN_GUESS_THRESHOLD 0.85
/********************** STRUCTURES ***********************************/
/* moved to global_structures.h */
/********************** PROTOTYPES ***********************************/
int os_scan(Target *target);
char *fp2ascii(FingerPrint *FP);
/* Parses a single fingerprint from the memory region given. If a
non-null fingerprint is returned, the user is in charge of freeing it
when done. This function does not require the fingerprint to be 100%
complete since it is used by scripts such as scripts/fingerwatch for
which some partial fingerpritns are OK. */
FingerPrint *parse_single_fingerprint(char *fprint_orig);
/* These functions take a file/db name and open+parse it, returning an
(allocated) FingerPrintDB containing the results. They exit with
an error message in the case of error. */
FingerPrintDB *parse_fingerprint_file(char *fname);
FingerPrintDB *parse_fingerprint_reference_file(char *dbname);
void free_fingerprint_file(FingerPrintDB *DB);
/* Compares 2 fingerprints -- a referenceFP (can have expression
attributes) with an observed fingerprint (no expressions). If
verbose is nonzero, differences will be printed. The comparison
accuracy (between 0 and 1) is returned). If MatchPoints is not NULL, it is
a special "fingerprints" which tells how many points each test is worth. */
double compare_fingerprints(FingerPrint *referenceFP, FingerPrint *observedFP,
FingerPrint *MatchPoints, int verbose);
/* Takes a fingerprint and looks for matches inside the passed in
reference fingerprint DB. The results are stored in in FPR (which
must point to an instantiated FingerPrintResults class) -- results
will be reverse-sorted by accuracy. No results below
accuracy_threshhold will be included. The max matches returned is
the maximum that fits in a FingerPrintResults class. */
void match_fingerprint(FingerPrint *FP, FingerPrintResults *FPR,
FingerPrintDB *DB, double accuracy_threshold);
/* Returns true if perfect match -- if num_subtests & num_subtests_succeeded are non_null it updates them. if shortcircuit is zero, it does all the tests, otherwise it returns when the first one fails */
void freeFingerPrint(FingerPrint *FP);
char *mergeFPs(FingerPrint *FPs[], int numFPs, bool isGoodFP, const struct in_addr * const addr, int distance, const u8 *mac, int openTcpPort, int closedTcpPort, int closedUdpPort, bool wrapit);
/* This function takes an array of "numSamples" IP IDs and analyzes
them to determine their sequenceability classification. It returns
one of the IPID_SEQ_* classifications defined in nmap.h . If the
function cannot determine the sequence, IPID_SEQ_UNKNOWN is returned.
This islocalhost argument is a boolean specifying whether these
numbers were generated by scanning localhost. NOTE: the "ipids" argument
may be modified if localhost is set to true. */
int ipid_sequence(int numSamples, u16 *ipids, int islocalhost);
#endif /*OSSCAN_H*/