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215 lines
11 KiB
C++
215 lines
11 KiB
C++
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/***************************************************************************
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* FingerPrintResults -- The FingerPrintResults class the results of OS *
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* fingerprint matching against a certain host. *
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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) 1996-2004 Insecure.Com LLC. Nmap *
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* is also a registered trademark of Insecure.Com LLC. This program is *
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* free software; you may redistribute and/or modify it under the *
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* terms of the GNU General Public License as published by the Free *
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* Software Foundation; Version 2. This guarantees your right to use, *
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* modify, and redistribute this software under certain conditions. If *
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* you wish to embed Nmap technology into proprietary software, we may be *
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* willing to sell alternative licenses (contact sales@insecure.com). *
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* Many security scanner vendors already license Nmap technology such as *
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* our remote OS fingerprinting database and code, service/version *
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* detection system, and port scanning code. *
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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 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-fingerprints 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 just meant to *
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* clarify our interpretation of derived works with some common examples. *
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* These restrictions only apply when you actually redistribute Nmap. For *
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* example, nothing stops you from writing and selling a proprietary *
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* front-end to Nmap. Just distribute it by itself, and point people to *
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* http://www.insecure.org/nmap/ to download Nmap. *
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* *
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* We don't consider these to be added restrictions on top of the GPL, but *
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* just a clarification of how we interpret "derived works" as it applies *
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* to our GPL-licensed Nmap product. This is similar to the way Linus *
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* Torvalds has announced his interpretation of how "derived works" *
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* applies to Linux kernel modules. Our interpretation refers only to *
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* Nmap - we don't speak for any other GPL products. *
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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 many *
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* security vendors, and generally include a perpetual license as well as *
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* providing for priority support and updates as well as helping to fund *
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* the continued development of Nmap technology. Please email *
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* sales@insecure.com for 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 Copying.OpenSSL file, and distribute linked *
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* 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 fyodor@insecure.org for possible incorporation into the main *
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* distribution. By sending these changes to Fyodor or one the *
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* Insecure.Org development mailing lists, it is assumed that you are *
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* offering Fyodor and Insecure.Com LLC the unlimited, non-exclusive right *
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* to reuse, modify, and relicense the code. Nmap will always be *
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* available Open Source, but this is important because the inability to *
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* relicense code has caused devastating problems for other Free Software *
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* projects (such as KDE and NASM). We also occasionally relicense the *
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* code to third parties as discussed above. If you wish to specify *
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* special license conditions of your contributions, just say so when you *
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* 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 for more details at *
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* http://www.gnu.org/copyleft/gpl.html , or in the COPYING file included *
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* with Nmap. *
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* *
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***************************************************************************/
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/* $Id$ */
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#include "FingerPrintResults.h"
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#include "osscan.h"
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#include "NmapOps.h"
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extern NmapOps o;
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FingerPrintResults::FingerPrintResults() {
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num_perfect_matches = num_matches = 0;
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overall_results = OSSCAN_NOMATCHES;
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memset(accuracy, 0, sizeof(accuracy));
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isClassified = false;
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osscan_opentcpport = osscan_closedtcpport = -1;
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memset(FPs, 0, sizeof(FPs));
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numFPs = goodFP = 0;
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}
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FingerPrintResults::~FingerPrintResults() {
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int i;
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/* Free OS fingerprints of OS scanning was done */
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for(i=0; i < numFPs; i++) {
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freeFingerPrint(FPs[i]);
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FPs[i] = NULL;
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}
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numFPs = 0;
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}
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const struct OS_Classification_Results *FingerPrintResults::getOSClassification() {
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if (!isClassified) { populateClassification(); isClassified = true; }
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return &OSR;
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}
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/* Are the attributes of this fingerprint good enough to warrant submission to the official DB? */
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bool FingerPrintResults::fingerprintSuitableForSubmission() {
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// TODO: There are many more tests I could (and should) add. Maybe related to
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// UDP test, TTL, etc.
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if (o.scan_delay > 500) // This can screw up the sequence timing
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return false;
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if (osscan_opentcpport < 0 || osscan_closedtcpport < 0 ) // then results won't be complete
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return false;
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return true;
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}
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/* Goes through fingerprinting results to populate OSR */
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void FingerPrintResults::populateClassification() {
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int printno, classno;
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OSR.OSC_num_perfect_matches = OSR.OSC_num_matches = 0;
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OSR.overall_results = OSSCAN_SUCCESS;
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if (overall_results == OSSCAN_TOOMANYMATCHES) {
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// The normal classification overflowed so we don't even have all the perfect matches,
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// I don't see any good reason to do classification.
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OSR.overall_results = OSSCAN_TOOMANYMATCHES;
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return;
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}
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for(printno = 0; printno < num_matches; printno++) {
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// a single print may have multiple classifications
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for(classno = 0; classno < prints[printno]->num_OS_Classifications; classno++) {
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if (!classAlreadyExistsInResults(&(prints[printno]->OS_class[classno]))) {
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// Then we have to add it ... first ensure we have room
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if (OSR.OSC_num_matches == MAX_FP_RESULTS) {
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// Out of space ... if the accuracy of this one is 100%, we have a problem
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if (accuracy[printno] == 1.0) OSR.overall_results = OSSCAN_TOOMANYMATCHES;
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return;
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}
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// We have space, but do we even want this one? No point
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// including lesser matches if we have 1 or more perfect
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// matches.
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if (OSR.OSC_num_perfect_matches > 0 && accuracy[printno] < 1.0) {
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return;
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}
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// OK, we will add the new class
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OSR.OSC[OSR.OSC_num_matches] = &(prints[printno]->OS_class[classno]);
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OSR.OSC_Accuracy[OSR.OSC_num_matches] = accuracy[printno];
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if (accuracy[printno] == 1.0) OSR.OSC_num_perfect_matches++;
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OSR.OSC_num_matches++;
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}
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}
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}
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if (OSR.OSC_num_matches == 0)
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OSR.overall_results = OSSCAN_NOMATCHES;
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return;
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}
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// Go through any previously enterted classes to see if this is a dupe;
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bool FingerPrintResults::classAlreadyExistsInResults(struct OS_Classification *OSC) {
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int i;
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for (i=0; i < OSR.OSC_num_matches; i++) {
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if (!strcmp(OSC->OS_Vendor, OSR.OSC[i]->OS_Vendor) &&
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!strcmp(OSC->OS_Family, OSR.OSC[i]->OS_Family) &&
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!strcmp(OSC->Device_Type, OSR.OSC[i]->Device_Type) &&
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!strcmp(OSC->OS_Generation? OSC->OS_Generation : "",
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OSR.OSC[i]->OS_Generation? OSR.OSC[i]->OS_Generation : "")) {
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// Found a duplicate!
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return true;
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}
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}
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// Went through all the results -- no duplicates found
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return false;
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}
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