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Diffstat (limited to 'external/unbound/smallapp/unbound-host.c')
-rw-r--r--external/unbound/smallapp/unbound-host.c497
1 files changed, 0 insertions, 497 deletions
diff --git a/external/unbound/smallapp/unbound-host.c b/external/unbound/smallapp/unbound-host.c
deleted file mode 100644
index d7a36a231..000000000
--- a/external/unbound/smallapp/unbound-host.c
+++ /dev/null
@@ -1,497 +0,0 @@
-/*
- * checkconf/unbound-host.c - replacement for host that supports validation.
- *
- * Copyright (c) 2007, NLnet Labs. All rights reserved.
- *
- * This software is open source.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of the NLNET LABS nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * \file
- *
- * This file performs functionality like 'host', and also supports validation.
- * It uses the libunbound library.
- */
-
-#include "config.h"
-#ifdef HAVE_GETOPT_H
-#include <getopt.h>
-#endif
-/* remove alloc checks, not in this part of the code */
-#ifdef UNBOUND_ALLOC_STATS
-#undef malloc
-#undef calloc
-#undef free
-#undef realloc
-#endif
-#ifdef UNBOUND_ALLOC_LITE
-#undef malloc
-#undef calloc
-#undef free
-#undef realloc
-#undef strdup
-#define unbound_lite_wrapstr(s) s
-#endif
-#include "libunbound/unbound.h"
-#include "sldns/rrdef.h"
-#include "sldns/wire2str.h"
-#ifdef HAVE_NSS
-/* nss3 */
-#include "nss.h"
-#endif
-
-/** verbosity for unbound-host app */
-static int verb = 0;
-
-/** Give unbound-host usage, and exit (1). */
-static void
-usage(void)
-{
- printf("Usage: unbound-host [-vdhr46] [-c class] [-t type] hostname\n");
- printf(" [-y key] [-f keyfile] [-F namedkeyfile]\n");
- printf(" [-C configfile]\n");
- printf(" Queries the DNS for information.\n");
- printf(" The hostname is looked up for IP4, IP6 and mail.\n");
- printf(" If an ip-address is given a reverse lookup is done.\n");
- printf(" Use the -v option to see DNSSEC security information.\n");
- printf(" -t type what type to look for.\n");
- printf(" -c class what class to look for, if not class IN.\n");
- printf(" -y 'keystring' specify trust anchor, DS or DNSKEY, like\n");
- printf(" -y 'example.com DS 31560 5 1 1CFED8478...'\n");
- printf(" -D DNSSEC enable with default root anchor\n");
- printf(" from %s\n", ROOT_ANCHOR_FILE);
- printf(" -f keyfile read trust anchors from file, with lines as -y.\n");
- printf(" -F keyfile read named.conf-style trust anchors.\n");
- printf(" -C config use the specified unbound.conf (none read by default)\n");
- printf(" -r read forwarder information from /etc/resolv.conf\n");
- printf(" breaks validation if the forwarder does not do DNSSEC.\n");
- printf(" -v be more verbose, shows nodata and security.\n");
- printf(" -d debug, traces the action, -d -d shows more.\n");
- printf(" -4 use ipv4 network, avoid ipv6.\n");
- printf(" -6 use ipv6 network, avoid ipv4.\n");
- printf(" -h show this usage help.\n");
- printf("Version %s\n", PACKAGE_VERSION);
- printf("BSD licensed, see LICENSE in source package for details.\n");
- printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
- exit(1);
-}
-
-/** determine if str is ip4 and put into reverse lookup format */
-static int
-isip4(const char* nm, char** res)
-{
- struct in_addr addr;
- /* ddd.ddd.ddd.ddd.in-addr.arpa. is less than 32 */
- char buf[32];
- if(inet_pton(AF_INET, nm, &addr) <= 0) {
- return 0;
- }
- snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa",
- (unsigned)((uint8_t*)&addr)[3], (unsigned)((uint8_t*)&addr)[2],
- (unsigned)((uint8_t*)&addr)[1], (unsigned)((uint8_t*)&addr)[0]);
- *res = strdup(buf);
- return 1;
-}
-
-/** determine if str is ip6 and put into reverse lookup format */
-static int
-isip6(const char* nm, char** res)
-{
- struct in6_addr addr;
- /* [nibble.]{32}.ip6.arpa. is less than 128 */
- const char* hex = "0123456789abcdef";
- char buf[128];
- char *p;
- int i;
- if(inet_pton(AF_INET6, nm, &addr) <= 0) {
- return 0;
- }
- p = buf;
- for(i=15; i>=0; i--) {
- uint8_t b = ((uint8_t*)&addr)[i];
- *p++ = hex[ (b&0x0f) ];
- *p++ = '.';
- *p++ = hex[ (b&0xf0) >> 4 ];
- *p++ = '.';
- }
- snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa");
- *res = strdup(buf);
- if(!*res) {
- fprintf(stderr, "error: out of memory\n");
- exit(1);
- }
- return 1;
-}
-
-/** massage input name */
-static char*
-massage_qname(const char* nm, int* reverse)
-{
- /* recognise IP4 and IP6, create reverse addresses if needed */
- char* res;
- if(isip4(nm, &res)) {
- *reverse = 1;
- } else if(isip6(nm, &res)) {
- *reverse = 1;
- } else {
- res = strdup(nm);
- }
- if(!res) {
- fprintf(stderr, "error: out of memory\n");
- exit(1);
- }
- return res;
-}
-
-/** massage input type */
-static int
-massage_type(const char* t, int reverse, int* multi)
-{
- if(t) {
- int r = sldns_get_rr_type_by_name(t);
- if(r == 0 && strcasecmp(t, "TYPE0") != 0 &&
- strcmp(t, "") != 0) {
- fprintf(stderr, "error unknown type %s\n", t);
- exit(1);
- }
- return r;
- }
- if(!t && reverse)
- return LDNS_RR_TYPE_PTR;
- *multi = 1;
- return LDNS_RR_TYPE_A;
-}
-
-/** massage input class */
-static int
-massage_class(const char* c)
-{
- if(c) {
- int r = sldns_get_rr_class_by_name(c);
- if(r == 0 && strcasecmp(c, "CLASS0") != 0 &&
- strcmp(c, "") != 0) {
- fprintf(stderr, "error unknown class %s\n", c);
- exit(1);
- }
- return r;
- }
- return LDNS_RR_CLASS_IN;
-}
-
-/** nice security status string */
-static const char*
-secure_str(struct ub_result* result)
-{
- if(result->secure) return "(secure)";
- if(result->bogus) return "(BOGUS (security failure))";
- return "(insecure)";
-}
-
-/** nice string for type */
-static void
-pretty_type(char* s, size_t len, int t)
-{
- char d[16];
- sldns_wire2str_type_buf((uint16_t)t, d, sizeof(d));
- snprintf(s, len, "%s", d);
-}
-
-/** nice string for class */
-static void
-pretty_class(char* s, size_t len, int c)
-{
- char d[16];
- sldns_wire2str_class_buf((uint16_t)c, d, sizeof(d));
- snprintf(s, len, "%s", d);
-}
-
-/** nice string for rcode */
-static void
-pretty_rcode(char* s, size_t len, int r)
-{
- char d[16];
- sldns_wire2str_rcode_buf(r, d, sizeof(d));
- snprintf(s, len, "%s", d);
-}
-
-/** convert and print rdata */
-static void
-print_rd(int t, char* data, size_t len)
-{
- char s[65535];
- sldns_wire2str_rdata_buf((uint8_t*)data, len, s, sizeof(s), (uint16_t)t);
- printf(" %s", s);
-}
-
-/** pretty line of RR data for results */
-static void
-pretty_rdata(char* q, char* cstr, char* tstr, int t, const char* sec,
- char* data, size_t len)
-{
- printf("%s", q);
- if(strcmp(cstr, "IN") != 0)
- printf(" in class %s", cstr);
- if(t == LDNS_RR_TYPE_A)
- printf(" has address");
- else if(t == LDNS_RR_TYPE_AAAA)
- printf(" has IPv6 address");
- else if(t == LDNS_RR_TYPE_MX)
- printf(" mail is handled by");
- else if(t == LDNS_RR_TYPE_PTR)
- printf(" domain name pointer");
- else printf(" has %s record", tstr);
- print_rd(t, data, len);
- if(verb > 0)
- printf(" %s", sec);
- printf("\n");
-}
-
-/** pretty line of output for results */
-static void
-pretty_output(char* q, int t, int c, struct ub_result* result, int docname)
-{
- int i;
- const char *secstatus = secure_str(result);
- char tstr[16];
- char cstr[16];
- char rcodestr[16];
- pretty_type(tstr, 16, t);
- pretty_class(cstr, 16, c);
- pretty_rcode(rcodestr, 16, result->rcode);
-
- if(!result->havedata && result->rcode) {
- printf("Host %s not found: %d(%s).",
- q, result->rcode, rcodestr);
- if(verb > 0)
- printf(" %s", secstatus);
- printf("\n");
- if(result->bogus && result->why_bogus)
- printf("%s\n", result->why_bogus);
- return;
- }
- if(docname && result->canonname &&
- result->canonname != result->qname) {
- printf("%s is an alias for %s", result->qname,
- result->canonname);
- if(verb > 0)
- printf(" %s", secstatus);
- printf("\n");
- }
- /* remove trailing . from long canonnames for nicer output */
- if(result->canonname && strlen(result->canonname) > 1 &&
- result->canonname[strlen(result->canonname)-1] == '.')
- result->canonname[strlen(result->canonname)-1] = 0;
- if(!result->havedata) {
- if(verb > 0) {
- printf("%s", result->canonname?result->canonname:q);
- if(strcmp(cstr, "IN") != 0)
- printf(" in class %s", cstr);
- if(t == LDNS_RR_TYPE_A)
- printf(" has no address");
- else if(t == LDNS_RR_TYPE_AAAA)
- printf(" has no IPv6 address");
- else if(t == LDNS_RR_TYPE_PTR)
- printf(" has no domain name ptr");
- else if(t == LDNS_RR_TYPE_MX)
- printf(" has no mail handler record");
- else if(t == LDNS_RR_TYPE_ANY) {
- char* s = sldns_wire2str_pkt(
- result->answer_packet,
- (size_t)result->answer_len);
- if(!s) {
- fprintf(stderr, "alloc failure\n");
- exit(1);
- }
- printf("%s\n", s);
- } else printf(" has no %s record", tstr);
- printf(" %s\n", secstatus);
- }
- /* else: emptiness to indicate no data */
- if(result->bogus && result->why_bogus)
- printf("%s\n", result->why_bogus);
- return;
- }
- i=0;
- while(result->data[i])
- {
- pretty_rdata(
- result->canonname?result->canonname:q,
- cstr, tstr, t, secstatus, result->data[i],
- (size_t)result->len[i]);
- i++;
- }
- if(result->bogus && result->why_bogus)
- printf("%s\n", result->why_bogus);
-}
-
-/** perform a lookup and printout return if domain existed */
-static int
-dnslook(struct ub_ctx* ctx, char* q, int t, int c, int docname)
-{
- int ret;
- struct ub_result* result;
-
- ret = ub_resolve(ctx, q, t, c, &result);
- if(ret != 0) {
- fprintf(stderr, "resolve error: %s\n", ub_strerror(ret));
- exit(1);
- }
- pretty_output(q, t, c, result, docname);
- ret = result->nxdomain;
- ub_resolve_free(result);
- return ret;
-}
-
-/** perform host lookup */
-static void
-lookup(struct ub_ctx* ctx, const char* nm, const char* qt, const char* qc)
-{
- /* massage input into a query name, type and class */
- int multi = 0; /* no type, so do A, AAAA, MX */
- int reverse = 0; /* we are doing a reverse lookup */
- char* realq = massage_qname(nm, &reverse);
- int t = massage_type(qt, reverse, &multi);
- int c = massage_class(qc);
-
- /* perform the query */
- if(multi) {
- if(!dnslook(ctx, realq, LDNS_RR_TYPE_A, c, 1)) {
- /* domain exists, lookup more */
- (void)dnslook(ctx, realq, LDNS_RR_TYPE_AAAA, c, 0);
- (void)dnslook(ctx, realq, LDNS_RR_TYPE_MX, c, 0);
- }
- } else {
- (void)dnslook(ctx, realq, t, c, 1);
- }
- ub_ctx_delete(ctx);
- free(realq);
-}
-
-/** print error if any */
-static void
-check_ub_res(int r)
-{
- if(r != 0) {
- fprintf(stderr, "error: %s\n", ub_strerror(r));
- exit(1);
- }
-}
-
-/** getopt global, in case header files fail to declare it. */
-extern int optind;
-/** getopt global, in case header files fail to declare it. */
-extern char* optarg;
-
-/** Main routine for unbound-host */
-int main(int argc, char* argv[])
-{
- int c;
- char* qclass = NULL;
- char* qtype = NULL;
- struct ub_ctx* ctx = NULL;
- int debuglevel = 0;
-
- ctx = ub_ctx_create();
- if(!ctx) {
- fprintf(stderr, "error: out of memory\n");
- exit(1);
- }
- /* no need to fetch additional targets, we only do few lookups */
- check_ub_res(ub_ctx_set_option(ctx, "target-fetch-policy:", "0 0 0 0 0"));
-
- /* parse the options */
- while( (c=getopt(argc, argv, "46DF:c:df:hrt:vy:C:")) != -1) {
- switch(c) {
- case '4':
- check_ub_res(ub_ctx_set_option(ctx, "do-ip6:", "no"));
- break;
- case '6':
- check_ub_res(ub_ctx_set_option(ctx, "do-ip4:", "no"));
- break;
- case 'c':
- qclass = optarg;
- break;
- case 'C':
- check_ub_res(ub_ctx_config(ctx, optarg));
- break;
- case 'D':
- check_ub_res(ub_ctx_add_ta_file(ctx, ROOT_ANCHOR_FILE));
- break;
- case 'd':
- debuglevel++;
- if(debuglevel < 2)
- debuglevel = 2; /* at least VERB_DETAIL */
- break;
- case 'r':
- check_ub_res(ub_ctx_resolvconf(ctx, "/etc/resolv.conf"));
- break;
- case 't':
- qtype = optarg;
- break;
- case 'v':
- verb++;
- break;
- case 'y':
- check_ub_res(ub_ctx_add_ta(ctx, optarg));
- break;
- case 'f':
- check_ub_res(ub_ctx_add_ta_file(ctx, optarg));
- break;
- case 'F':
- check_ub_res(ub_ctx_trustedkeys(ctx, optarg));
- break;
- case '?':
- case 'h':
- default:
- usage();
- }
- }
- if(debuglevel != 0) /* set after possible -C options */
- check_ub_res(ub_ctx_debuglevel(ctx, debuglevel));
- if(ub_ctx_get_option(ctx, "use-syslog", &optarg) == 0) {
- if(strcmp(optarg, "yes") == 0) /* disable use-syslog */
- check_ub_res(ub_ctx_set_option(ctx,
- "use-syslog:", "no"));
- free(optarg);
- }
- argc -= optind;
- argv += optind;
- if(argc != 1)
- usage();
-
-#ifdef HAVE_NSS
- if(NSS_NoDB_Init(".") != SECSuccess) {
- fprintf(stderr, "could not init NSS\n");
- return 1;
- }
-#endif
- lookup(ctx, argv[0], qtype, qclass);
- return 0;
-}
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