/*
* testcode/signit.c - debug tool to sign rrsets with given keys.
*
* 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 program signs rrsets with the given keys. It can be used to
* construct input to test the validator with.
*/
#include "config.h"
#include <ldns/ldns.h>
#include <assert.h>
#define DNSKEY_BIT_ZSK 0x0100
/**
* Key settings
*/
struct keysets {
/** signature inception */
uint32_t incep;
/** signature expiration */
uint32_t expi;
/** owner name */
char* owner;
/** keytag */
uint16_t keytag;
/** DNSKEY flags */
uint16_t flags;
};
/** print usage and exit */
static void
usage()
{
printf("usage: signit expi ince keytag owner keyfile\n");
printf("present rrset data on stdin.\n");
printf("signed data is printed to stdout.\n");
printf("\n");
printf("Or use: signit NSEC3PARAM hash flags iter salt\n");
printf("present names on stdin, hashed names are printed to stdout.\n");
exit(1);
}
static time_t
convert_timeval(const char* str)
{
time_t t;
struct tm tm;
memset(&tm, 0, sizeof(tm));
if(strlen(str) < 14)
return 0;
if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
&tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
return 0;
tm.tm_year -= 1900;
tm.tm_mon--;
/* Check values */
if (tm.tm_year < 70) return 0;
if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0;
if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0;
if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0;
if (tm.tm_min < 0 || tm.tm_min > 59) return 0;
if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0;
/* call ldns conversion function */
t = ldns_mktime_from_utc(&tm);
return t;
}
static void fatal_exit(const char* format, ...)
{
va_list args;
va_start(args, format);
printf("fatal exit: ");
vprintf(format, args);
va_end(args);
exit(1);
}
/** read expi ince keytag owner from cmdline */
static void
parse_cmdline(char *argv[], struct keysets* s)
{
s->expi = convert_timeval(argv[1]);
s->incep = convert_timeval(argv[2]);
s->keytag = (uint16_t)atoi(argv[3]);
s->owner = argv[4];
s->flags = DNSKEY_BIT_ZSK; /* to enforce signing */
}
/** read all key files, exit on error */
static ldns_key_list*
read_keys(int num, char* names[], struct keysets* set)
{
int i;
ldns_key_list* keys = ldns_key_list_new();
ldns_key* k;
ldns_rdf* rdf;
ldns_status s;
int b;
FILE* in;
if(!keys) fatal_exit("alloc failure");
for(i=0; i<num; i++) {
printf("read keyfile %s\n", names[i]);
in = fopen(names[i], "r");
if(!in) fatal_exit("could not open %s: %s", names[i],
strerror(errno));
s = ldns_key_new_frm_fp(&k, in);
fclose(in);
if(s != LDNS_STATUS_OK)
fatal_exit("bad keyfile %s: %s", names[i],
ldns_get_errorstr_by_id(s));
ldns_key_set_expiration(k, set->expi);
ldns_key_set_inception(k, set->incep);
s = ldns_str2rdf_dname(&rdf, set->owner);
if(s != LDNS_STATUS_OK)
fatal_exit("bad owner name %s: %s", set->owner,
ldns_get_errorstr_by_id(s));
ldns_key_set_pubkey_owner(k, rdf);
ldns_key_set_flags(k, set->flags);
ldns_key_set_keytag(k, set->keytag);
b = ldns_key_list_push_key(keys, k);
assert(b);
}
return keys;
}
/** read list of rrs from the file */
static ldns_rr_list*
read_rrs(FILE* in)
{
uint32_t my_ttl = 3600;
ldns_rdf *my_origin = NULL;
ldns_rdf *my_prev = NULL;
ldns_status s;
int line_nr = 1;
int b;
ldns_rr_list* list;
ldns_rr *rr;
list = ldns_rr_list_new();
if(!list) fatal_exit("alloc error");
while(!feof(in)) {
s = ldns_rr_new_frm_fp_l(&rr, in, &my_ttl, &my_origin,
&my_prev, &line_nr);
if(s == LDNS_STATUS_SYNTAX_TTL ||
s == LDNS_STATUS_SYNTAX_ORIGIN ||
s == LDNS_STATUS_SYNTAX_EMPTY)
continue;
else if(s != LDNS_STATUS_OK)
fatal_exit("parse error in line %d: %s", line_nr,
ldns_get_errorstr_by_id(s));
b = ldns_rr_list_push_rr(list, rr);
assert(b);
}
printf("read %d lines\n", line_nr);
return list;
}
/** sign the rrs with the keys */
static void
signit(ldns_rr_list* rrs, ldns_key_list* keys)
{
ldns_rr_list* rrset;
ldns_rr_list* sigs;
while(ldns_rr_list_rr_count(rrs) > 0) {
rrset = ldns_rr_list_pop_rrset(rrs);
if(!rrset) fatal_exit("copy alloc failure");
sigs = ldns_sign_public(rrset, keys);
if(!sigs) fatal_exit("failed to sign");
ldns_rr_list_print(stdout, rrset);
ldns_rr_list_print(stdout, sigs);
printf("\n");
ldns_rr_list_free(rrset);
ldns_rr_list_free(sigs);
}
}
/** process keys and signit */
static void
process_keys(int argc, char* argv[])
{
ldns_rr_list* rrs;
ldns_key_list* keys;
struct keysets settings;
assert(argc == 6);
parse_cmdline(argv, &settings);
keys = read_keys(1, argv+5, &settings);
rrs = read_rrs(stdin);
signit(rrs, keys);
ldns_rr_list_deep_free(rrs);
ldns_key_list_free(keys);
}
/** process nsec3 params and perform hashing */
static void
process_nsec3(int argc, char* argv[])
{
char line[10240];
ldns_rdf* salt;
ldns_rdf* in, *out;
ldns_status status;
status = ldns_str2rdf_nsec3_salt(&salt, argv[5]);
if(status != LDNS_STATUS_OK)
fatal_exit("Could not parse salt %s: %s", argv[5],
ldns_get_errorstr_by_id(status));
assert(argc == 6);
while(fgets(line, (int)sizeof(line), stdin)) {
if(strlen(line) > 0)
line[strlen(line)-1] = 0; /* remove trailing newline */
if(line[0]==0)
continue;
status = ldns_str2rdf_dname(&in, line);
if(status != LDNS_STATUS_OK)
fatal_exit("Could not parse name %s: %s", line,
ldns_get_errorstr_by_id(status));
ldns_rdf_print(stdout, in);
printf(" -> ");
/* arg 3 is flags, unused */
out = ldns_nsec3_hash_name(in, (uint8_t)atoi(argv[2]),
(uint16_t)atoi(argv[4]),
ldns_rdf_data(salt)[0], ldns_rdf_data(salt)+1);
if(!out)
fatal_exit("Could not hash %s", line);
ldns_rdf_print(stdout, out);
printf("\n");
ldns_rdf_deep_free(in);
ldns_rdf_deep_free(out);
}
ldns_rdf_deep_free(salt);
}
/** main program */
int main(int argc, char* argv[])
{
if(argc != 6) {
usage();
}
if(strcmp(argv[1], "NSEC3PARAM") == 0) {
process_nsec3(argc, argv);
return 0;
}
process_keys(argc, argv);
return 0;
}
