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Cygwin: resolver: Added processing of AAAA records

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AAAA records returned from Windows resolver were flagged as "No
structure" in debug output because of being processed (although
correctly) in the default catch-all case.  This patch makes the AAAA
records properly recognized.
This commit is contained in:
Anton Lavrentiev via Cygwin-patches 2022-01-17 13:03:14 -05:00 committed by Corinna Vinschen
parent 31db9f4019
commit 367b62859e
1 changed files with 7 additions and 8 deletions
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15
winsup/cygwin/libc/minires-os-if.c
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@ -69,15 +69,14 @@ static unsigned char * write_record(unsigned char * ptr, PDNS_RECORD rr,
switch(rr->wType) { switch(rr->wType) {
case DNS_TYPE_A: case DNS_TYPE_A:
case DNS_TYPE_AAAA:
{ {
u_int8_t * aptr = (u_int8_t *) & rr->Data.A.IpAddress; u_int8_t * aptr = rr->wType == DNS_TYPE_A
if (ptr + 4 <= EndPtr) { ? (u_int8_t *) & rr->Data.A.IpAddress : (u_int8_t *) & rr->Data.AAAA.Ip6Address;
ptr[0] = aptr[0]; int sz = rr->wType == DNS_TYPE_A ? NS_INADDRSZ/*4*/ : NS_IN6ADDRSZ/*16*/;
ptr[1] = aptr[1]; if (ptr + sz <= EndPtr)
ptr[2] = aptr[2]; memcpy(ptr, aptr, sz);
ptr[3] = aptr[3]; ptr += sz;
}
ptr += 4;
break; break;
} }
case DNS_TYPE_NS: case DNS_TYPE_NS: