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Retail products

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Traffic interception SDK

Control every TCP/IP network connection

• Route connections via proxy
• Redirect connections and modify the data
• Block connections and applications

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SSL interception SDK

View SSL in plaintext and modify it

• View the SSL stream decrypted in plaintext
• Redirect SSL connection and modify decrypted data
• Browser shows "SSL lock" without warnings

Learn More

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Documentation

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DNSAnswers.h Go to the documentation of this file. /* * Copyright (c) 2000-2003 Barak Weichselbaum <barak@komodia.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Contact info: * ------------- * * Site: http://www.komodia.com * Main contact: barak@komodia.com * For custom projects, * consulting, or other * paid services: sales@komodia.com */ #ifndef _DNSAnswers_H_ #define _DNSAnswers_H_ #include "ErrorHandler.h" #include "DNSAnswer.h" #include <vector> namespace KomodiaDNS { class CDNSQuery; // Header of the DNS header typedef struct _DnsHeaderHeader { unsigned short usID; // DNS header ID unsigned short usOptions; // Too many fields unsigned short usQDCount; unsigned short usANCount; unsigned short usNSCount; unsigned short usARCount; //Initialize ctor _DnsHeaderHeader() : usID(0), usOptions(0), usQDCount(0), usANCount(0), usNSCount(0), usARCount(0) { } } DnsHeaderHeader; typedef DnsHeaderHeader FAR * LPDnsHeaderHeader; #define DnsHeaderHeaderLength sizeof(DnsHeaderHeader) //DNS headers variables #define DNS_QR_REQUEST 0 //Request DNS entry #define DNS_QR_REPLY (1 << 7) //DNS reply //four bit field that specifies kind of query in this message #define DNS_OPCODE_STANDARD 0 #define DNS_OPCODE_INVERSE (1 << 3) #define DNS_OPCODE_STATUS (2 << 3) //Authoritative Answer - this bit is valid in responses, //and specifies that the responding name server is an //authority for the domain name in question section. #define DNS_AA (1 << 2) //Recursion Desired - this bit may be set in a query and //is copied into the response. If RD is set, it directs //the name server to pursue the query recursively. //Recursive query support is optional. #define DNS_RECURSION 1 //Recursion Available - this be is set or cleared in a //response, and denotes whether recursive query support is //available in the name server. #define DNS_RECURSION_AVAILABLE (1 << 8) //Response code - this 4 bit field is set as part of //responses. The values have the following //interpretation #define DNS_RCODE_NOERROR 0 #define DNS_RCODE_FORMAT (1 << 13) #define DNS_RCODE_SERVER (2 << 13) #define DNS_RCODE_NAME (3 << 13) #define DNS_RCODE_REFUSED (5 << 13) //Server failure #define DNS_SERVER_FAILURE (3 << 8) class CDNSAnswers : public CErrorHandler { public: //Vector of answers typedef std::vector<std::string> StringAnswersVector; //Vector of IP answers typedef std::vector<unsigned long> IPAnswersVector; public: //Create a string of the answer //bWindowsLines - Use window line seperator //bBrief - Make the report brief //bExtraLine - Add an extra line seperator in the end std::string GetAnswerParsed(BOOL bWindowsLines=TRUE, BOOL bBrief=TRUE, BOOL bExtraLine=FALSE)const; //Get the query const CDNSQuery* GetQuery()const; //Is the DNS resovled ? BOOL IsResolved()const; //Is it a reverse answer BOOL IsReverseAnswer()const; //First answer data (if you expect many answers, //request it with the vector) std::string GetAnswer()const; //Get all the answers StringAnswersVector GetAnswers()const; //Get the first A/IP answer (if you expect many answers, //request it with the vector) unsigned long GetAIPAnswer()const; //Get all the A/IP answers IPAnswersVector GetAIPAnswers()const; //Get the request ID unsigned short GetDNSID() const; //With all this data, just get the address unsigned long GetAddress(unsigned short usIndex=0)const; //Get an answer const CDNSAnswer& GetAnswer(unsigned short usIndex)const; //Parse the answers int Parse(const char *pBuffer, int iLength); //Ctor and Dtor CDNSAnswers(); CDNSAnswers(const CDNSAnswers& rAnswers); virtual ~CDNSAnswers(); private: //Our vector of answers typedef std::vector<CDNSAnswer> AnswersVector; private: //No assignment operator CDNSAnswers& operator=(const CDNSAnswers& rAnswers); //Parse the answer unsigned short ParseAnswers(const char *pBuffer, const char* pOriginalBuffer); //Reverse header data void ReverseHeader(); //Delete all the data void UnInitialize(); //Our header DnsHeaderHeader m_aDNSHeader; //The query CDNSQuery* m_pDNSQuery; //Our answers AnswersVector m_aAnswers; }; //of namespace } #endif

Copyright © 2009 Komodia Inc. All rights reserved

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