From 4adc6c33e769e647b6fe73752f727c58d09e4e53 Mon Sep 17 00:00:00 2001 From: Natanael Copa Date: Wed, 15 Jun 2016 20:27:46 +0200 Subject: [PATCH] refactor name_from_dns in hostname lookup backend loop over an address family / resource record mapping to avoid repetitive code. --- src/network/lookup_name.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c index d3d97b48..fb7303a3 100644 --- a/src/network/lookup_name.c +++ b/src/network/lookup_name.c @@ -141,20 +141,19 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static int qlens[2], alens[2]; int i, nq = 0; struct dpc_ctx ctx = { .addrs = buf, .canon = canon }; - - if (family != AF_INET6) { - qlens[nq] = __res_mkquery(0, name, 1, RR_A, 0, 0, 0, - qbuf[nq], sizeof *qbuf); - if (qlens[nq] == -1) - return EAI_NONAME; - nq++; - } - if (family != AF_INET) { - qlens[nq] = __res_mkquery(0, name, 1, RR_AAAA, 0, 0, 0, - qbuf[nq], sizeof *qbuf); - if (qlens[nq] == -1) - return EAI_NONAME; - nq++; + static const struct { int af; int rr; } afrr[2] = { + { .af = AF_INET6, .rr = RR_A }, + { .af = AF_INET, .rr = RR_AAAA }, + }; + + for (i=0; i<2; i++) { + if (family != afrr[i].af) { + qlens[nq] = __res_mkquery(0, name, 1, afrr[i].rr, + 0, 0, 0, qbuf[nq], sizeof *qbuf); + if (qlens[nq] == -1) + return EAI_NONAME; + nq++; + } } if (__res_msend_rc(nq, qp, qlens, ap, alens, sizeof *abuf, conf) < 0) -- 2.40.0