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authorLennart Poettering <lennart@poettering.net>2016-01-03 17:54:01 +0100
committerLennart Poettering <lennart@poettering.net>2016-01-03 17:54:01 +0100
commit1d3db294fca96fff0a7f8cff4eeeb42460ac21ac (patch)
tree0271e8fb2af21cbf91ebc6c1dbfb0f367c1f775d /src/resolve
parent05442a9cdc3feaecfe27ed537b36de81818ae522 (diff)
resolved: print a log message when we ignore an NSEC3 RR with an excessive amount of iterations
Diffstat (limited to 'src/resolve')
-rw-r--r--src/resolve/resolved-dns-dnssec.c8
-rw-r--r--src/resolve/resolved-dns-dnssec.h2
2 files changed, 6 insertions, 4 deletions
diff --git a/src/resolve/resolved-dns-dnssec.c b/src/resolve/resolved-dns-dnssec.c
index 1182201b7d..6e6e62b132 100644
--- a/src/resolve/resolved-dns-dnssec.c
+++ b/src/resolve/resolved-dns-dnssec.c
@@ -1073,7 +1073,7 @@ static int nsec3_hash_to_gcrypt_md(uint8_t algorithm) {
}
}
-int dnssec_nsec3_hash(const DnsResourceRecord *nsec3, const char *name, void *ret) {
+int dnssec_nsec3_hash(DnsResourceRecord *nsec3, const char *name, void *ret) {
uint8_t wire_format[DNS_WIRE_FOMAT_HOSTNAME_MAX];
gcry_md_hd_t md = NULL;
size_t hash_size;
@@ -1089,8 +1089,10 @@ int dnssec_nsec3_hash(const DnsResourceRecord *nsec3, const char *name, void *re
if (nsec3->key->type != DNS_TYPE_NSEC3)
return -EINVAL;
- if (nsec3->nsec3.iterations > NSEC3_ITERATIONS_MAX)
+ if (nsec3->nsec3.iterations > NSEC3_ITERATIONS_MAX) {
+ log_debug("Ignoring NSEC3 RR %s with excessive number of iterations.", dns_resource_record_to_string(nsec3));
return -EOPNOTSUPP;
+ }
algorithm = nsec3_hash_to_gcrypt_md(nsec3->nsec3.algorithm);
if (algorithm < 0)
@@ -1200,7 +1202,7 @@ static int nsec3_is_good(DnsResourceRecord *rr, DnsAnswerFlags flags, DnsResourc
return dns_name_equal(a, b);
}
-static int nsec3_hashed_domain(const DnsResourceRecord *nsec3, const char *domain, const char *zone, char **ret) {
+static int nsec3_hashed_domain(DnsResourceRecord *nsec3, const char *domain, const char *zone, char **ret) {
_cleanup_free_ char *l = NULL, *hashed_domain = NULL;
uint8_t hashed[DNSSEC_HASH_SIZE_MAX];
int hashed_size;
diff --git a/src/resolve/resolved-dns-dnssec.h b/src/resolve/resolved-dns-dnssec.h
index f106875027..57858d0c15 100644
--- a/src/resolve/resolved-dns-dnssec.h
+++ b/src/resolve/resolved-dns-dnssec.h
@@ -87,7 +87,7 @@ uint16_t dnssec_keytag(DnsResourceRecord *dnskey);
int dnssec_canonicalize(const char *n, char *buffer, size_t buffer_max);
-int dnssec_nsec3_hash(const DnsResourceRecord *nsec3, const char *name, void *ret);
+int dnssec_nsec3_hash(DnsResourceRecord *nsec3, const char *name, void *ret);
typedef enum DnssecNsecResult {
DNSSEC_NSEC_NO_RR, /* No suitable NSEC/NSEC3 RR found */