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Remove dnssec_canonicalize function which is no longer used

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This commit is contained in:
Tom Hughes 2020-02-24 10:20:12 +00:00
parent a63932778c
commit 19be3da991
3 changed files with 0 additions and 73 deletions
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49
src/resolve/resolved-dns-dnssec.c
View File

@ -59,55 +59,6 @@ uint16_t dnssec_keytag(DnsResourceRecord *dnskey, bool mask_revoke) {
return sum & UINT32_C(0xFFFF);
}
int dnssec_canonicalize(const char *n, char *buffer, size_t buffer_max) {
size_t c = 0;
int r;
/* Converts the specified hostname into DNSSEC canonicalized
* form. */
if (buffer_max < 2)
return -ENOBUFS;
for (;;) {
r = dns_label_unescape(&n, buffer, buffer_max, 0);
if (r < 0)
return r;
if (r == 0)
break;
if (buffer_max < (size_t) r + 2)
return -ENOBUFS;
/* The DNSSEC canonical form is not clear on what to
* do with dots appearing in labels, the way DNS-SD
* does it. Refuse it for now. */
if (memchr(buffer, '.', r))
return -EINVAL;
ascii_strlower_n(buffer, (size_t) r);
buffer[r] = '.';
buffer += r + 1;
c += r + 1;
buffer_max -= r + 1;
}
if (c <= 0) {
/* Not even a single label: this is the root domain name */
assert(buffer_max > 2);
buffer[0] = '.';
buffer[1] = 0;
return 1;
}
return (int) c;
}
#if HAVE_GCRYPT
static int rr_compare(DnsResourceRecord * const *a, DnsResourceRecord * const *b) {

2
src/resolve/resolved-dns-dnssec.h
View File

@ -58,8 +58,6 @@ int dnssec_has_rrsig(DnsAnswer *a, const DnsResourceKey *key);
uint16_t dnssec_keytag(DnsResourceRecord *dnskey, bool mask_revoke);
int dnssec_canonicalize(const char *n, char *buffer, size_t buffer_max);
int dnssec_nsec3_hash(DnsResourceRecord *nsec3, const char *name, void *ret);
typedef enum DnssecNsecResult {

22
src/resolve/test-dnssec.c
View File

@ -13,26 +13,6 @@
#include "string-util.h"
#include "hexdecoct.h"
static void test_dnssec_canonicalize_one(const char *original, const char *canonical, int r) {
char canonicalized[DNSSEC_CANONICAL_HOSTNAME_MAX];
assert_se(dnssec_canonicalize(original, canonicalized, sizeof(canonicalized)) == r);
if (r < 0)
return;
assert_se(streq(canonicalized, canonical));
}
static void test_dnssec_canonicalize(void) {
test_dnssec_canonicalize_one("", ".", 1);
test_dnssec_canonicalize_one(".", ".", 1);
test_dnssec_canonicalize_one("foo", "foo.", 4);
test_dnssec_canonicalize_one("foo.", "foo.", 4);
test_dnssec_canonicalize_one("FOO.", "foo.", 4);
test_dnssec_canonicalize_one("FOO.bar.", "foo.bar.", 8);
test_dnssec_canonicalize_one("FOO..bar.", NULL, -EINVAL);
}
#if HAVE_GCRYPT
static void test_dnssec_verify_dns_key(void) {
@ -499,8 +479,6 @@ static void test_dnssec_nsec3_hash(void) {
int main(int argc, char *argv[]) {
test_dnssec_canonicalize();
#if HAVE_GCRYPT
test_dnssec_verify_dns_key();
test_dnssec_verify_rfc8080_ed25519_example1();