diff options
Diffstat (limited to 'src/network/lookup_name.c')
| -rw-r--r-- | src/network/lookup_name.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c index 4a6999cb..de0fefee 100644 --- a/src/network/lookup_name.c +++ b/src/network/lookup_name.c @@ -102,6 +102,7 @@ struct dpc_ctx { struct address *addrs; char *canon; int cnt; + int rrtype; }; #define RR_A 1 @@ -117,12 +118,14 @@ static int dns_parse_callback(void *c, int rr, const void *data, int len, const if (ctx->cnt >= MAXADDRS) return -1; switch (rr) { case RR_A: + if (rr != ctx->rrtype) return 0; if (len != 4) return -1; ctx->addrs[ctx->cnt].family = AF_INET; ctx->addrs[ctx->cnt].scopeid = 0; memcpy(ctx->addrs[ctx->cnt++].addr, data, 4); break; case RR_AAAA: + if (rr != ctx->rrtype) return 0; if (len != 16) return -1; ctx->addrs[ctx->cnt].family = AF_INET6; ctx->addrs[ctx->cnt].scopeid = 0; @@ -142,7 +145,7 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static unsigned char qbuf[2][280], abuf[2][ABUF_SIZE]; const unsigned char *qp[2] = { qbuf[0], qbuf[1] }; unsigned char *ap[2] = { abuf[0], abuf[1] }; - int qlens[2], alens[2]; + int qlens[2], alens[2], qtypes[2]; int i, nq = 0; struct dpc_ctx ctx = { .addrs = buf, .canon = canon }; static const struct { int af; int rr; } afrr[2] = { @@ -156,6 +159,7 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static 0, 0, 0, qbuf[nq], sizeof *qbuf); if (qlens[nq] == -1) return 0; + qtypes[nq] = afrr[i].rr; qbuf[nq][3] = 0; /* don't need AD flag */ /* Ensure query IDs are distinct. */ if (nq && qbuf[nq][0] == qbuf[0][0]) @@ -173,8 +177,10 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static if ((abuf[i][3] & 15) != 0) return EAI_FAIL; } - for (i=nq-1; i>=0; i--) + for (i=nq-1; i>=0; i--) { + ctx.rrtype = qtypes[i]; __dns_parse(abuf[i], alens[i], dns_parse_callback, &ctx); + } if (ctx.cnt) return ctx.cnt; return EAI_NODATA; |