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172 lines
10 KiB
C
172 lines
10 KiB
C
/***************************************************************************
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* osscan.h -- Routines used for OS detection via TCP/IP fingerprinting. *
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* For more information on how this works in Nmap, see my paper at *
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* http://nmap.org/osdetect/ *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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* *
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* The Nmap Security Scanner is (C) 1996-2012 Insecure.Com LLC. Nmap is *
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* also a registered trademark of Insecure.Com LLC. This program is free *
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* software; you may redistribute and/or modify it under the terms of the *
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* GNU General Public License as published by the Free Software *
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* Foundation; Version 2 with the clarifications and exceptions described *
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* below. This guarantees your right to use, modify, and redistribute *
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* this software under certain conditions. If you wish to embed Nmap *
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* technology into proprietary software, we sell alternative licenses *
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* (contact sales@insecure.com). Dozens of software vendors already *
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* license Nmap technology such as host discovery, port scanning, OS *
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* detection, version detection, and the Nmap Scripting Engine. *
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* *
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* Note that the GPL places important restrictions on "derived works", yet *
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* it does not provide a detailed definition of that term. To avoid *
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* misunderstandings, we interpret that term as broadly as copyright law *
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* allows. For example, we consider an application to constitute a *
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* "derivative work" for the purpose of this license if it does any of the *
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* following: *
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* o Integrates source code from Nmap *
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* o Reads or includes Nmap copyrighted data files, such as *
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* nmap-os-db or nmap-service-probes. *
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* o Executes Nmap and parses the results (as opposed to typical shell or *
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* execution-menu apps, which simply display raw Nmap output and so are *
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* not derivative works.) *
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* o Integrates/includes/aggregates Nmap into a proprietary executable *
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* installer, such as those produced by InstallShield. *
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* o Links to a library or executes a program that does any of the above *
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* *
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* The term "Nmap" should be taken to also include any portions or derived *
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* works of Nmap. This list is not exclusive, but is meant to clarify our *
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* interpretation of derived works with some common examples. Our *
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* interpretation applies only to Nmap--we don't speak for other people's *
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* GPL works. *
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* *
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* If you have any questions about the GPL licensing restrictions on using *
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* Nmap in non-GPL works, we would be happy to help. As mentioned above, *
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* we also offer alternative license to integrate Nmap into proprietary *
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* applications and appliances. These contracts have been sold to dozens *
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* of software vendors, and generally include a perpetual license as well *
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* as providing for priority support and updates. They also fund the *
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* continued development of Nmap. Please email sales@insecure.com for *
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* further information. *
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* *
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* As a special exception to the GPL terms, Insecure.Com LLC grants *
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* permission to link the code of this program with any version of the *
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* OpenSSL library which is distributed under a license identical to that *
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* listed in the included docs/licenses/OpenSSL.txt file, and distribute *
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* linked combinations including the two. You must obey the GNU GPL in all *
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* respects for all of the code used other than OpenSSL. If you modify *
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* this file, you may extend this exception to your version of the file, *
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* but you are not obligated to do so. *
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* *
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* If you received these files with a written license agreement or *
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* contract stating terms other than the terms above, then that *
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* alternative license agreement takes precedence over these comments. *
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* *
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* Source is provided to this software because we believe users have a *
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* right to know exactly what a program is going to do before they run it. *
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* This also allows you to audit the software for security holes (none *
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* have been found so far). *
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* *
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* Source code also allows you to port Nmap to new platforms, fix bugs, *
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* and add new features. You are highly encouraged to send your changes *
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* to nmap-dev@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one of the *
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* Insecure.Org development mailing lists, it is assumed that you are *
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* offering the Nmap Project (Insecure.Com LLC) the unlimited, *
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* non-exclusive right to reuse, modify, and relicense the code. Nmap *
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* will always be available Open Source, but this is important because the *
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* inability to relicense code has caused devastating problems for other *
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* Free Software projects (such as KDE and NASM). We also occasionally *
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* relicense the code to third parties as discussed above. If you wish to *
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* specify special license conditions of your contributions, just say so *
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* when you send them. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License v2.0 for more details at *
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* http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file *
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* included with Nmap. *
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* *
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***************************************************************************/
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/* $Id$ */
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#ifndef OSSCAN_H
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#define OSSCAN_H
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#include "nmap.h"
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#include "global_structures.h"
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#include "FingerPrintResults.h"
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#include "Target.h"
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#define OSSCAN_SUCCESS 0
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#define OSSCAN_NOMATCHES -1
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#define OSSCAN_TOOMANYMATCHES -2
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/* We won't even consider matches with a lower accuracy than this */
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#define OSSCAN_GUESS_THRESHOLD 0.85
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/********************** STRUCTURES ***********************************/
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/* moved to global_structures.h */
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/********************** PROTOTYPES ***********************************/
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/* The OS database consists of many small strings, many of which appear
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thousands of times. It pays to allocate memory only once for each unique
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string, and have all references point at the one allocated value. */
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const char *string_pool_insert(const char *s);
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const char *string_pool_sprintf(const char *fmt, ...);
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const char *fp2ascii(FingerPrint *FP);
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/* Parses a single fingerprint from the memory region given. If a
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non-null fingerprint is returned, the user is in charge of freeing it
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when done. This function does not require the fingerprint to be 100%
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complete since it is used by scripts such as scripts/fingerwatch for
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which some partial fingerpritns are OK. */
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FingerPrint *parse_single_fingerprint(char *fprint_orig);
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/* These functions take a file/db name and open+parse it, returning an
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(allocated) FingerPrintDB containing the results. They exit with
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an error message in the case of error. */
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FingerPrintDB *parse_fingerprint_file(const char *fname);
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FingerPrintDB *parse_fingerprint_reference_file(const char *dbname);
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void free_fingerprint_file(FingerPrintDB *DB);
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/* Compares 2 fingerprints -- a referenceFP (can have expression
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attributes) with an observed fingerprint (no expressions). If
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verbose is nonzero, differences will be printed. The comparison
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accuracy (between 0 and 1) is returned). If MatchPoints is not NULL, it is
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a special "fingerprints" which tells how many points each test is worth. */
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double compare_fingerprints(const FingerPrint *referenceFP, const FingerPrint *observedFP,
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const FingerPrint *MatchPoints, int verbose);
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/* Takes a fingerprint and looks for matches inside the passed in
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reference fingerprint DB. The results are stored in in FPR (which
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must point to an instantiated FingerPrintResultsIPv4 class) -- results
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will be reverse-sorted by accuracy. No results below
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accuracy_threshhold will be included. The max matches returned is
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the maximum that fits in a FingerPrintResultsIPv4 class. */
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void match_fingerprint(const FingerPrint *FP, FingerPrintResultsIPv4 *FPR,
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const FingerPrintDB *DB, double accuracy_threshold);
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/* 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 */
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void freeFingerPrint(FingerPrint *FP);
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void WriteSInfo(char *ostr, int ostrlen, bool isGoodFP,
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const char *engine_id,
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const struct sockaddr_storage *addr, int distance,
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enum dist_calc_method distance_calculation_method,
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const u8 *mac, int openTcpPort,
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int closedTcpPort, int closedUdpPort);
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const char *mergeFPs(FingerPrint *FPs[], int numFPs, bool isGoodFP,
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const struct sockaddr_storage *addr, int distance,
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enum dist_calc_method distance_calculation_method,
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const u8 *mac, int openTcpPort, int closedTcpPort,
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int closedUdpPort, bool wrapit);
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#endif /*OSSCAN_H*/
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