153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/*
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* winrc/anchor-update.c - windows trust anchor update util
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*
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* Copyright (c) 2009, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file is made because contrib/update-anchor.sh does not work on
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* windows (no shell).
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*/
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#include "config.h"
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#include "libunbound/unbound.h"
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#include "ldns/rrdef.h"
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#include "ldns/pkthdr.h"
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#include "ldns/wire2str.h"
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/** usage */
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static void
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usage(void)
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{
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printf("usage: { name-of-domain filename }+ \n");
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printf("exit codes: 0 anchors updated, 1 no changes, 2 errors.\n");
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exit(1);
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}
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/** fatal exit */
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static void fatal(const char* str)
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{
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printf("fatal error: %s\n", str);
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exit(2);
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}
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/** lookup data */
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static struct ub_result*
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do_lookup(struct ub_ctx* ctx, char* domain)
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{
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struct ub_result* result = NULL;
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int r;
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r = ub_resolve(ctx, domain, LDNS_RR_TYPE_DNSKEY, LDNS_RR_CLASS_IN,
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&result);
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if(r) {
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printf("failed to lookup %s\n", ub_strerror(r));
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fatal("ub_resolve failed");
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}
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if(!result->havedata && (result->rcode == LDNS_RCODE_SERVFAIL ||
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result->rcode == LDNS_RCODE_REFUSED))
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return NULL; /* probably no internet connection */
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if(!result->havedata) fatal("result has no data");
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if(!result->secure) fatal("result is not secure");
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return result;
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}
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/** print result to file */
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static void
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do_print(struct ub_result* result, char* file)
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{
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FILE* out = fopen(file, "w");
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char s[65535], t[32];
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int i;
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if(!out) {
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perror(file);
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fatal("fopen failed");
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}
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i = 0;
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if(result->havedata)
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while(result->data[i]) {
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sldns_wire2str_rdata_buf((uint8_t*)result->data[i],
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(size_t)result->len[i], s, sizeof(s),
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(uint16_t)result->qtype);
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sldns_wire2str_type_buf((uint16_t)result->qtype, t, sizeof(t));
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fprintf(out, "%s\t%s\t%s\n", result->qname, t, s);
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i++;
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}
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fclose(out);
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}
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/** update domain to file */
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static int
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do_update(char* domain, char* file)
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{
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struct ub_ctx* ctx;
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struct ub_result* result;
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int r;
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printf("updating %s to %s\n", domain, file);
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ctx = ub_ctx_create();
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if(!ctx) fatal("ub_ctx_create failed");
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if((r=ub_ctx_add_ta_file(ctx, file))) {
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printf("%s\n", ub_strerror(r));
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fatal("ub_ctx_add_ta_file failed");
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}
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if(!(result=do_lookup(ctx, domain))) {
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ub_ctx_delete(ctx);
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return 1;
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}
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ub_ctx_delete(ctx);
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do_print(result, file);
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ub_resolve_free(result);
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return 0;
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}
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/** anchor update main */
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int main(int argc, char** argv)
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{
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int retcode = 1;
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if(argc == 1) {
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usage();
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}
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argc--;
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argv++;
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while(argc > 0) {
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int r = do_update(argv[0], argv[1]);
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if(r == 0) retcode = 0;
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/* next */
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argc-=2;
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argv+=2;
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}
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return retcode;
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}
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