/*************************************************************************** * dns_request_generation.cc -- Tests DNS request generation * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2015 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. * * * * 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) * * * ***************************************************************************/ #include "../nmap_dns.h" #include #define TEST_INCR(pred,acc) \ if ( !(pred) ) \ { \ std::cout << "Test " << #pred << " failed at " << __FILE__ << ":" << __LINE__ << std::endl; \ ++acc; \ } int main() { std::cout << "Testing nmap_dns" << std::endl; int ret = 0; std::string target = "scanme.nmap.org"; DNS::RECORD_TYPE rt = DNS::A; const size_t buflen = 1500; u8 buf[buflen]; size_t reqlen = DNS::Factory::buildSimpleRequest(target, rt, buf, buflen); DNS::Packet p; size_t plen = p.parseFromBuffer(buf, buflen); TEST_INCR(reqlen == plen, ret); DNS::Query * q = &*p.queries.begin(); TEST_INCR(q->name == target, ret); TEST_INCR(q->record_class == DNS::CLASS_IN, ret); TEST_INCR(q->record_type == rt, ret); // This is a possible answere for an A query for scanme.nmap.org const char ipp[] = "45.33.32.156"; const size_t answere_len = 49; const u8 answere_buf[] = { 0x92, 0xdc, // Trsnsaction ID 0x81, 0x80, // Flags 0x00, 0x01, // Questions count 0x00, 0x01, // Answers RRs count 0x00, 0x00, // Authorities RRs count 0x00, 0x00, // Additionals RRs count 0x06, // Label lenght <-- [12] 0x73, 0x63, 0x61, 0x6e, 0x6d, 0x65, // "scanme" 0x04, // Label lenght 0x6e, 0x6d, 0x61, 0x70, // "nmap" 0x03, // Label lenght 0x6f, 0x72, 0x67, // "org" 0x00, // Name terminator 0x00, 0x01, // A 0x00, 0x01, // CLASS_IN 0xc0, 0x0c, // Compressed name pointer to offset 12 0x00, 0x01, // A 0x00, 0x01, // CLASS_IN 0x00, 0x00, 0x0e, 0x0f, // TTL 3599 0x00, 0x04, // Record Lenght 0x2d, 0x21, 0x20, 0x9c }; // 45.33.32.156 plen = p.parseFromBuffer(answere_buf, answere_len); TEST_INCR(answere_len == plen, ret); q = &*p.queries.begin(); TEST_INCR(q->name == target, ret); TEST_INCR(q->record_class == DNS::CLASS_IN, ret); TEST_INCR(q->record_type == rt, ret ); DNS::Answer * a = &*p.answers.begin(); TEST_INCR(a->name == target, ret ); TEST_INCR(a->record_class == DNS::CLASS_IN, ret); TEST_INCR(a->record_type == DNS::A, ret); TEST_INCR(a->ttl == 3599, ret) DNS::A_Record * ar = static_cast(a->record); char ar_ipp[INET6_ADDRSTRLEN]; sockaddr_storage_iptop(&ar->value, ar_ipp); TEST_INCR(!strcmp(ipp, ar_ipp), ret); const size_t ptr_answere_len = 72; std::string ptr_target; TEST_INCR(DNS::Factory::ipToPtr(ar->value, ptr_target), ret); TEST_INCR(ptr_target == "156.32.33.45.in-addr.arpa", ret); const u8 ptr_answere[] = { 0x08, 0xf2, // ID 0x81, 0x80, // Flags 0x00, 0x01, // Questions count 0x00, 0x01, // Answers RRs count 0x00, 0x00, // Authorities RRs count 0x00, 0x00, // Additionals RRs count 0x03, // Label lenght 0x31, 0x35, 0x36, // "156" 0x02, // Label lenght 0x33, 0x32, // "32" 0x02, // Label lenght 0x33, 0x33, // "33" 0x02, // Label lenght 0x34, 0x35, // "45" 0x07, // Label lenght 0x69, 0x6e, 0x2d, 0x61, 0x64, 0x64, 0x72, // "in-addr" 0x04, // Label lenght 0x61, 0x72, 0x70, 0x61, // "arpa" 0x00, // Name terminator 0x00, 0x0c, // PTR 0x00, 0x01, // CLASS_IN 0xc0, 0x0c, // Compressed name pointer to offset 12 0x00, 0x0c, // PTR 0x00, 0x01, // CLASS_IN 0x00, 0x01, 0x51, 0x78, // TTL 86392 0x00, 0x11, // Record Lenght 0x06, // Label lenght 0x73, 0x63, 0x61, 0x6e, 0x6d, 0x65, // "scanme" 0x04, // Label lenght 0x6e, 0x6d, 0x61, 0x70, // "nmap" 0x03, // Label lenght 0x6f, 0x72, 0x67, // "org" 0x00 }; // Name terminator plen = p.parseFromBuffer(ptr_answere, ptr_answere_len); TEST_INCR(plen == ptr_answere_len, ret); TEST_INCR(p.id == 0x08f2, ret); TEST_INCR(p.flags == 0x8180, ret); TEST_INCR(p.queries.size() == 1, ret); TEST_INCR(p.answers.size() == 1, ret); q = &*p.queries.begin(); TEST_INCR(q->name == ptr_target, ret); TEST_INCR(q->record_class == DNS::CLASS_IN, ret); TEST_INCR(q->record_type == DNS::PTR, ret); a = &*p.answers.begin(); TEST_INCR(a->name == ptr_target, ret); TEST_INCR(a->record_class == DNS::CLASS_IN, ret); TEST_INCR(a->record_type == DNS::PTR, ret); TEST_INCR(a->length == 0x11, ret); TEST_INCR(a->ttl == 86392, ret); DNS::PTR_Record * r = static_cast(a->record); TEST_INCR(r->value == target, ret); if(ret) std::cout << "Testing nmap_dns finished with errors" << std::endl; else std::cout << "Testing nmap_dns finished without errors" << std::endl; return ret; // 0 means ok }