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203 lines
10 KiB
C++
203 lines
10 KiB
C++
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/***************************************************************************
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* dns_request_generation.cc -- Tests DNS request generation *
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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) 1996-2022 Nmap Software LLC ("The Nmap *
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* Project"). Nmap is also a registered trademark of the Nmap Project. *
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* *
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* This program is distributed under the terms of the Nmap Public Source *
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* License (NPSL). The exact license text applying to a particular Nmap *
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* release or source code control revision is contained in the LICENSE *
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* file distributed with that version of Nmap or source code control *
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* revision. More Nmap copyright/legal information is available from *
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* https://nmap.org/book/man-legal.html, and further information on the *
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* NPSL license itself can be found at https://nmap.org/npsl/ . This *
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* header summarizes some key points from the Nmap license, but is no *
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* substitute for the actual license text. *
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* *
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* Nmap is generally free for end users to download and use themselves, *
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* including commercial use. It is available from https://nmap.org. *
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* *
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* The Nmap license generally prohibits companies from using and *
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* redistributing Nmap in commercial products, but we sell a special Nmap *
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* OEM Edition with a more permissive license and special features for *
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* this purpose. See https://nmap.org/oem/ *
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* *
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* If you have received a written Nmap license agreement or contract *
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* stating terms other than these (such as an Nmap OEM license), you may *
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* choose to use and redistribute Nmap under those terms instead. *
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* *
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* The official Nmap Windows builds include the Npcap software *
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* (https://npcap.com) for packet capture and transmission. It is under *
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* separate license terms which forbid redistribution without special *
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* permission. So the official Nmap Windows builds may not be *
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* redistributed without special permission (such as an Nmap OEM *
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* license). *
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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. *
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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 submit your *
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* changes as a Github PR or by email to the dev@nmap.org mailing list *
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* for possible incorporation into the main distribution. Unless you *
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* specify otherwise, it is understood that you are offering us very *
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* broad rights to use your submissions as described in the Nmap Public *
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* Source License Contributor Agreement. This is important because we *
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* fund the project by selling licenses with various terms, and also *
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* because the inability to relicense code has caused devastating *
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* problems for other Free Software projects (such as KDE and NASM). *
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* *
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* The free version of Nmap is distributed in the hope that it will be *
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties, *
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* indemnification and commercial support are all available through the *
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* Npcap OEM program--see https://nmap.org/oem/ *
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* *
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***************************************************************************/
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#include "../nmap_dns.h"
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#include <iostream>
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#define TEST_INCR(pred,acc) \
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if ( !(pred) ) \
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{ \
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std::cout << "Test " << #pred << " failed at " << __FILE__ << ":" << __LINE__ << std::endl; \
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++acc; \
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}
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int main()
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{
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std::cout << "Testing nmap_dns" << std::endl;
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int ret = 0;
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std::string target = "scanme.nmap.org";
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DNS::RECORD_TYPE rt = DNS::A;
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const size_t buflen = 1500;
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u8 buf[buflen];
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size_t reqlen = DNS::Factory::buildSimpleRequest(target, rt, buf, buflen);
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DNS::Packet p;
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size_t plen = p.parseFromBuffer(buf, buflen);
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TEST_INCR(reqlen == plen, ret);
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DNS::Query * q = &*p.queries.begin();
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TEST_INCR(q->name == target, ret);
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TEST_INCR(q->record_class == DNS::CLASS_IN, ret);
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TEST_INCR(q->record_type == rt, ret);
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// This is a possible answere for an A query for scanme.nmap.org
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const char ipp[] = "45.33.32.156";
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const size_t answere_len = 49;
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const u8 answere_buf[] = { 0x92, 0xdc, // Trsnsaction ID
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0x81, 0x80, // Flags
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0x00, 0x01, // Questions count
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0x00, 0x01, // Answers RRs count
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0x00, 0x00, // Authorities RRs count
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0x00, 0x00, // Additionals RRs count
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0x06, // Label length <-- [12]
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0x73, 0x63, 0x61, 0x6e, 0x6d, 0x65, // "scanme"
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0x04, // Label length
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0x6e, 0x6d, 0x61, 0x70, // "nmap"
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0x03, // Label length
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0x6f, 0x72, 0x67, // "org"
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0x00, // Name terminator
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0x00, 0x01, // A
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0x00, 0x01, // CLASS_IN
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0xc0, 0x0c, // Compressed name pointer to offset 12
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0x00, 0x01, // A
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0x00, 0x01, // CLASS_IN
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0x00, 0x00, 0x0e, 0x0f, // TTL 3599
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0x00, 0x04, // Record Length
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0x2d, 0x21, 0x20, 0x9c }; // 45.33.32.156
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plen = p.parseFromBuffer(answere_buf, answere_len);
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TEST_INCR(answere_len == plen, ret);
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q = &*p.queries.begin();
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TEST_INCR(q->name == target, ret);
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TEST_INCR(q->record_class == DNS::CLASS_IN, ret);
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TEST_INCR(q->record_type == rt, ret );
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DNS::Answer * a = &*p.answers.begin();
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TEST_INCR(a->name == target, ret );
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TEST_INCR(a->record_class == DNS::CLASS_IN, ret);
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TEST_INCR(a->record_type == DNS::A, ret);
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TEST_INCR(a->ttl == 3599, ret)
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DNS::A_Record * ar = static_cast<DNS::A_Record *>(a->record);
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char ar_ipp[INET6_ADDRSTRLEN];
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sockaddr_storage_iptop(&ar->value, ar_ipp);
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TEST_INCR(!strcmp(ipp, ar_ipp), ret);
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const size_t ptr_answere_len = 72;
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std::string ptr_target;
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TEST_INCR(DNS::Factory::ipToPtr(ar->value, ptr_target), ret);
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TEST_INCR(ptr_target == "156.32.33.45.in-addr.arpa", ret);
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const u8 ptr_answere[] = { 0x08, 0xf2, // ID
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0x81, 0x80, // Flags
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0x00, 0x01, // Questions count
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0x00, 0x01, // Answers RRs count
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0x00, 0x00, // Authorities RRs count
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0x00, 0x00, // Additionals RRs count
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0x03, // Label length
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0x31, 0x35, 0x36, // "156"
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0x02, // Label length
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0x33, 0x32, // "32"
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0x02, // Label length
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0x33, 0x33, // "33"
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0x02, // Label length
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0x34, 0x35, // "45"
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0x07, // Label length
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0x69, 0x6e, 0x2d, 0x61, 0x64, 0x64, 0x72, // "in-addr"
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0x04, // Label length
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0x61, 0x72, 0x70, 0x61, // "arpa"
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0x00, // Name terminator
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0x00, 0x0c, // PTR
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0x00, 0x01, // CLASS_IN
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0xc0, 0x0c, // Compressed name pointer to offset 12
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0x00, 0x0c, // PTR
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0x00, 0x01, // CLASS_IN
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0x00, 0x01, 0x51, 0x78, // TTL 86392
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0x00, 0x11, // Record Length
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0x06, // Label length
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0x73, 0x63, 0x61, 0x6e, 0x6d, 0x65, // "scanme"
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0x04, // Label length
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0x6e, 0x6d, 0x61, 0x70, // "nmap"
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0x03, // Label length
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0x6f, 0x72, 0x67, // "org"
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0x00 }; // Name terminator
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plen = p.parseFromBuffer(ptr_answere, ptr_answere_len);
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TEST_INCR(plen == ptr_answere_len, ret);
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TEST_INCR(p.id == 0x08f2, ret);
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TEST_INCR(p.flags == 0x8180, ret);
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TEST_INCR(p.queries.size() == 1, ret);
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TEST_INCR(p.answers.size() == 1, ret);
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q = &*p.queries.begin();
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TEST_INCR(q->name == ptr_target, ret);
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TEST_INCR(q->record_class == DNS::CLASS_IN, ret);
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TEST_INCR(q->record_type == DNS::PTR, ret);
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a = &*p.answers.begin();
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TEST_INCR(a->name == ptr_target, ret);
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TEST_INCR(a->record_class == DNS::CLASS_IN, ret);
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TEST_INCR(a->record_type == DNS::PTR, ret);
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TEST_INCR(a->length == 0x11, ret);
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TEST_INCR(a->ttl == 86392, ret);
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DNS::PTR_Record * r = static_cast<DNS::PTR_Record *>(a->record);
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TEST_INCR(r->value == target, ret);
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if(ret) std::cout << "Testing nmap_dns finished with errors" << std::endl;
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else std::cout << "Testing nmap_dns finished without errors" << std::endl;
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return ret; // 0 means ok
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}
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