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//
// MCFetchAsyncMXRecord.cpp
// mailcore2
//
// Created by Christopher Hockley on 29/01/15.
// Copyright (c) 2015 MailCore. All rights reserved.
//
#include "MCMXRecordResolverOperation.h"
#if !defined(ANDROID) && !defined(__ANDROID__)
#include <arpa/inet.h>
#include <resolv.h>
#endif
using namespace mailcore;
MXRecordResolverOperation::MXRecordResolverOperation()
{
mHostname = NULL;
mMXRecords = NULL;
}
MXRecordResolverOperation::~MXRecordResolverOperation()
{
MC_SAFE_RELEASE(mMXRecords);
MC_SAFE_RELEASE(mHostname);
}
void MXRecordResolverOperation::setHostname(String * hostname)
{
MC_SAFE_REPLACE_COPY(String, mHostname, hostname);
}
String * MXRecordResolverOperation::hostname()
{
return mHostname;
}
Array * MXRecordResolverOperation::mxRecords()
{
return mMXRecords;
}
void MXRecordResolverOperation::main()
{
mMXRecords = new Array();
#if !defined(ANDROID) && !defined(__ANDROID__)
unsigned char response[NS_PACKETSZ];
ns_msg handle;
ns_rr rr;
int len;
char dispbuf[4096];
if (((len = res_search(MCUTF8(mHostname), ns_c_in, ns_t_mx, response, sizeof(response))) >= 0) and
(ns_initparse(response, len, &handle) >= 0) and
(ns_msg_count(handle, ns_s_an) >= 0)) {
for (int ns_index = 0; ns_index < len; ns_index++) {
if (ns_parserr(&handle, ns_s_an, ns_index, &rr)) {
/* WARN: ns_parserr failed */
continue;
}
ns_sprintrr (&handle, &rr, NULL, NULL, dispbuf, sizeof (dispbuf));
if (ns_rr_class(rr) == ns_c_in and ns_rr_type(rr) == ns_t_mx) {
char mxname[4096];
dn_expand(ns_msg_base(handle), ns_msg_base(handle) + ns_msg_size(handle), ns_rr_rdata(rr) + NS_INT16SZ, mxname, sizeof(mxname));
String * str = String::stringWithUTF8Characters(mxname);
mMXRecords->addObject(str);
}
}
}
#endif
}
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