diff options
Diffstat (limited to 'lib/libc/asr')
| -rw-r--r-- | lib/libc/asr/asr_resolver.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/lib/libc/asr/asr_resolver.c b/lib/libc/asr/asr_resolver.c index 6d49dd31ab1..a44a9735327 100644 --- a/lib/libc/asr/asr_resolver.c +++ b/lib/libc/asr/asr_resolver.c @@ -1,4 +1,4 @@ -/* $OpenBSD: asr_resolver.c,v 1.3 2012/07/08 17:01:06 eric Exp $ */ +/* $OpenBSD: asr_resolver.c,v 1.4 2012/07/11 16:49:12 eric Exp $ */ /* * Copyright (c) 2012 Eric Faurot <eric@openbsd.org> * @@ -24,6 +24,7 @@ #include <string.h> #include "asr.h" +#include "asr_private.h" /* * XXX this function is actually internal to asr, but we use it here to force @@ -140,6 +141,51 @@ res_querydomain(const char *name, return (res_query(fqdn, class, type, answer, anslen)); } +/* This function is apparently needed by some ports. */ +int +res_mkquery(int op, const char *dname, int class, int type, + const unsigned char *data, int datalen, const unsigned char *newrr, + unsigned char *buf, int buflen) +{ + struct asr_ctx *ac; + struct packed p; + struct header h; + char fqdn[MAXDNAME]; + char dn[MAXDNAME]; + + /* we currently only support QUERY */ + if (op != QUERY || data) + return (-1); + + if (dname[0] == '\0' || dname[strlen(dname) - 1] != '.') { + strlcpy(fqdn, dname, sizeof fqdn); + if (strlcat(fqdn, ".", sizeof fqdn) >= sizeof fqdn) + return (-1); + dname = fqdn; + } + + if (dname_from_fqdn(dname, dn, sizeof(dn)) == -1) + return (-1); + + ac = asr_use_resolver(NULL); + + h.id = res_randomid(); + if (ac->ac_options & RES_RECURSE) + h.flags |= RD_MASK; + h.qdcount = 1; + + packed_init(&p, buf, buflen); + pack_header(&p, &h); + pack_query(&p, type, class, dn); + + asr_ctx_unref(ac); + + if (p.err) + return (-1); + + return (p.offset); +} + int res_search(const char *name, int class, int type, u_char *ans, int anslen) { |