/*************************************************************************** * fingermatch.cc -- A relatively simple utility for determining whether a * * given Nmap fingerprint matches (or comes close to matching) any of the * * fingerprints in a collection such as the nmap-os-fingerprints file that * * ships with Nmap. * * * ***********************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.) * * o Integrates/includes/aggregates Nmap into a proprietary executable * * 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. * * These restrictions only apply when you actually redistribute Nmap. For * * example, nothing stops you from writing and selling a proprietary * * front-end to Nmap. Just distribute it by itself, and point people to * * http://insecure.org/nmap/ to download Nmap. * * * * We don't consider these to be added restrictions on top of the GPL, but * * just a clarification of how we interpret "derived works" as it applies * * to our GPL-licensed Nmap product. This is similar to the way Linus * * 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 * * combinations including the two. You must obey the GNU GPL in all * * 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. * * * ***************************************************************************/ /* $Id$ */ #include "nbase.h" #include "nmap.h" #include "osscan.h" #include "fingerlib.h" #define FINGERMATCH_GUESS_THRESHOLD 0.75 /* How low we will still show guesses for */ void usage() { printf("Usage: fingermatch \n" "(You will be prompted for the fingerprint data)\n" "\n"); exit(1); } int main(int argc, char *argv[]) { char *fingerfile = NULL; FingerPrint **reference_FPs = NULL; FingerPrint *testFP; struct FingerPrintResults FPR; char fprint[2048]; int i, rc; char gen[128]; /* temporary buffer for os generation part of classification */ if (argc != 2) usage(); /* First we read in the fingerprint file provided on the command line */ fingerfile = argv[1]; reference_FPs = parse_fingerprint_file(fingerfile); if (reference_FPs == NULL) fatal("Could not open or parse Fingerprint file given on the command line: %s", fingerfile); /* Now we read in the user-provided fingerprint */ printf("Enter the fingerprint you would like to match, followed by a blank single-dot line:\n"); if (readFP(stdin, fprint, sizeof(fprint)) == -1) fatal("[ERROR] Failed to read in supposed fingerprint from stdin\n"); testFP = parse_single_fingerprint(fprint); if (!testFP) fatal("Sorry -- failed to parse the so-called fingerprint you entered"); if ((rc = remove_duplicate_tests(testFP))) { printf("\n**WARNING**: Adjusted fingerprint due to %d duplicated tests (we only look at the first).", rc); } /* Now we find the matches! */ match_fingerprint(testFP, &FPR, reference_FPs, FINGERMATCH_GUESS_THRESHOLD); switch(FPR.overall_results) { case OSSCAN_NOMATCHES: printf("**NO MATCHES** found for the entered fingerprint in %s\n", fingerfile); break; case OSSCAN_TOOMANYMATCHES: printf("Found **TOO MANY EXACT MATCHES** to print for entered fingerprint in %s\n", fingerfile); break; case OSSCAN_SUCCESS: if (FPR.num_perfect_matches > 0) { printf("Found **%d PERFECT MATCHES** for entered fingerprint in %s:\n", FPR.num_perfect_matches, fingerfile); printf("Accu Line# OS (classification)\n"); for(i=0; i < FPR.num_matches && FPR.accuracy[i] == 1; i++) { if (FPR.prints[i]->OS_class[0].OS_Generation) snprintf(gen, sizeof(gen), " %s ", FPR.prints[i]->OS_class[0].OS_Generation); else gen[0] = '\0'; printf("100%% %5d %s (%s | %s |%s| %s)\n", FPR.prints[i]->line, FPR.prints[i]->OS_name, FPR.prints[i]->OS_class[0].OS_Vendor, FPR.prints[i]->OS_class[0].OS_Family, gen, FPR.prints[i]->OS_class[0].Device_Type ); } } else { printf("No perfect matches found, **GUESSES AVAILABLE** for entered fingerprint in %s:\n", fingerfile); printf("Accu Line# OS (classification)\n"); for(i=0; i < 10 && i < FPR.num_matches; i++) { if (FPR.prints[i]->OS_class[0].OS_Generation) snprintf(gen, sizeof(gen), " %s ", FPR.prints[i]->OS_class[0].OS_Generation); else gen[0] = '\0'; printf("%3d%% %5d %s (%s | %s |%s| %s)\n", (int) (FPR.accuracy[i] * 100), FPR.prints[i]->line, FPR.prints[i]->OS_name, FPR.prints[i]->OS_class[0].OS_Vendor, FPR.prints[i]->OS_class[0].OS_Family, gen, FPR.prints[i]->OS_class[0].Device_Type ); } } printf("\n"); break; default: fatal("Bogus error."); break; } return 0; }