legatt
32f4597c4d
- Naming style migrated to camel-case - P7lib logger sources added - Vcpkg manifest, CMake presets and build moved to root - SDL2, Vulkan and RmlUi dependencies added - Logger LOG macro added - Logger configuration - SDL2 window configuration - Vulkan configuration - RmlUi configuration - SDL event loop
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// /
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// 2012-2020 (c) Baical /
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// /
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// This library is free software; you can redistribute it and/or /
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// modify it under the terms of the GNU Lesser General Public /
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// License as published by the Free Software Foundation; either /
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// version 3.0 of the License, or (at your option) any later version. /
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// /
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// This library is distributed in the hope that it will be useful, /
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// but 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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// Lesser General Public License for more details. /
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// /
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// You should have received a copy of the GNU Lesser General Public /
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// License along with this library. /
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// /
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////////////////////////////////////////////////////////////////////////////////
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#include <netinet/in.h>
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//#include <arpa/nameser.h>
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#include <resolv.h>
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#include <netdb.h>
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#include "GTypes.h"
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#include "AList.h"
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class CDnsTxt: public CAList<tACHAR*>
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{
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protected:
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virtual tBOOL Data_Release(tACHAR *i_pStr)
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{
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if (NULL == i_pStr)
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{
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return FALSE;
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}
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free(i_pStr);
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return TRUE;
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}//CListBase::Data_Release
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};
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tBOOL static inline GetDnsTxtRecords(const tACHAR *i_pDomain, CDnsTxt &io_rList)
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{
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const size_t l_szTxtBuf = 2048;
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u_char l_pTxtBuf[l_szTxtBuf];
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int l_iResult = -1;
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int l_iLen = 0;
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ns_msg l_stMsg = {0};
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ns_rr l_stRr = {0};
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tUINT16 l_sMsgCount= 0;
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l_iLen = res_query(i_pDomain, ns_c_in, ns_t_txt, l_pTxtBuf, (int)l_szTxtBuf);
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if (l_iLen < 0)
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{
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return FALSE;
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}
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l_iResult = ns_initparse(l_pTxtBuf, l_iLen, &l_stMsg);
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if (l_iResult < 0)
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{
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return FALSE;
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}
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l_sMsgCount = ns_msg_count(l_stMsg, ns_s_an);
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for (tUINT16 i = 0; i < l_sMsgCount; i++)
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{
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if ( (0 == ns_parserr(&l_stMsg, ns_s_an, i, &l_stRr))
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&& (l_stRr.rdlength)
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)
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{
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tACHAR *l_pText = (tACHAR*)malloc(l_stRr.rdlength-1);
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if (l_pText)
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{
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//TXT record RDATA format is:
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// length, 1 byte
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// string, <length bytes>
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// length2, 1 byte
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// string2, <length2 bytes>
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// etc.
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memcpy(l_pText, (tACHAR *)l_stRr.rdata + 1, l_stRr.rdlength - 1);
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l_pText[l_stRr.rdlength - 1] = 0;
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io_rList.Push_Last(l_pText);
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}
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}
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}
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return (io_rList.Count() != 0);
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}
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