38 lines
2.4 KiB
C
38 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ 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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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dns/dns.h"
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#include "libc/dns/dnsquestion.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Serializes DNS question record to wire.
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*
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* @return number of bytes written
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* @see pascalifydnsname()
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*/
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int serializednsquestion(uint8_t *buf, size_t size, struct DnsQuestion dq) {
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int wrote;
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if ((wrote = pascalifydnsname(buf, size, dq.qname)) == -1) return -1;
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if (wrote + 1 + 4 > size) return enospc();
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buf[wrote + 1] = dq.qtype >> 010, buf[wrote + 2] = dq.qtype >> 000;
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buf[wrote + 3] = dq.qclass >> 010, buf[wrote + 4] = dq.qclass >> 000;
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return wrote + 5;
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}
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