summaryrefslogtreecommitdiff
path: root/src/resolve/resolved-dns-rr.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/resolve/resolved-dns-rr.c')
-rw-r--r--src/resolve/resolved-dns-rr.c1835
1 files changed, 0 insertions, 1835 deletions
diff --git a/src/resolve/resolved-dns-rr.c b/src/resolve/resolved-dns-rr.c
deleted file mode 100644
index 87e4abec6e..0000000000
--- a/src/resolve/resolved-dns-rr.c
+++ /dev/null
@@ -1,1835 +0,0 @@
-/***
- This file is part of systemd.
-
- Copyright 2014 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <math.h>
-
-#include "alloc-util.h"
-#include "dns-domain.h"
-#include "dns-type.h"
-#include "escape.h"
-#include "hexdecoct.h"
-#include "resolved-dns-dnssec.h"
-#include "resolved-dns-packet.h"
-#include "resolved-dns-rr.h"
-#include "string-table.h"
-#include "string-util.h"
-#include "strv.h"
-#include "terminal-util.h"
-
-DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) {
- DnsResourceKey *k;
- size_t l;
-
- assert(name);
-
- l = strlen(name);
- k = malloc0(sizeof(DnsResourceKey) + l + 1);
- if (!k)
- return NULL;
-
- k->n_ref = 1;
- k->class = class;
- k->type = type;
-
- strcpy((char*) k + sizeof(DnsResourceKey), name);
-
- return k;
-}
-
-DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname) {
- int r;
-
- assert(key);
- assert(cname);
-
- assert(IN_SET(cname->key->type, DNS_TYPE_CNAME, DNS_TYPE_DNAME));
-
- if (cname->key->type == DNS_TYPE_CNAME)
- return dns_resource_key_new(key->class, key->type, cname->cname.name);
- else {
- DnsResourceKey *k;
- char *destination = NULL;
-
- r = dns_name_change_suffix(dns_resource_key_name(key), dns_resource_key_name(cname->key), cname->dname.name, &destination);
- if (r < 0)
- return NULL;
- if (r == 0)
- return dns_resource_key_ref((DnsResourceKey*) key);
-
- k = dns_resource_key_new_consume(key->class, key->type, destination);
- if (!k)
- return mfree(destination);
-
- return k;
- }
-}
-
-int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name) {
- DnsResourceKey *new_key;
- char *joined;
- int r;
-
- assert(ret);
- assert(key);
- assert(name);
-
- if (dns_name_is_root(name)) {
- *ret = dns_resource_key_ref(key);
- return 0;
- }
-
- r = dns_name_concat(dns_resource_key_name(key), name, &joined);
- if (r < 0)
- return r;
-
- new_key = dns_resource_key_new_consume(key->class, key->type, joined);
- if (!new_key) {
- free(joined);
- return -ENOMEM;
- }
-
- *ret = new_key;
- return 0;
-}
-
-DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) {
- DnsResourceKey *k;
-
- assert(name);
-
- k = new0(DnsResourceKey, 1);
- if (!k)
- return NULL;
-
- k->n_ref = 1;
- k->class = class;
- k->type = type;
- k->_name = name;
-
- return k;
-}
-
-DnsResourceKey* dns_resource_key_ref(DnsResourceKey *k) {
-
- if (!k)
- return NULL;
-
- /* Static/const keys created with DNS_RESOURCE_KEY_CONST will
- * set this to -1, they should not be reffed/unreffed */
- assert(k->n_ref != (unsigned) -1);
-
- assert(k->n_ref > 0);
- k->n_ref++;
-
- return k;
-}
-
-DnsResourceKey* dns_resource_key_unref(DnsResourceKey *k) {
- if (!k)
- return NULL;
-
- assert(k->n_ref != (unsigned) -1);
- assert(k->n_ref > 0);
-
- if (k->n_ref == 1) {
- free(k->_name);
- free(k);
- } else
- k->n_ref--;
-
- return NULL;
-}
-
-const char* dns_resource_key_name(const DnsResourceKey *key) {
- const char *name;
-
- if (!key)
- return NULL;
-
- if (key->_name)
- name = key->_name;
- else
- name = (char*) key + sizeof(DnsResourceKey);
-
- if (dns_name_is_root(name))
- return ".";
- else
- return name;
-}
-
-bool dns_resource_key_is_address(const DnsResourceKey *key) {
- assert(key);
-
- /* Check if this is an A or AAAA resource key */
-
- return key->class == DNS_CLASS_IN && IN_SET(key->type, DNS_TYPE_A, DNS_TYPE_AAAA);
-}
-
-int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) {
- int r;
-
- if (a == b)
- return 1;
-
- r = dns_name_equal(dns_resource_key_name(a), dns_resource_key_name(b));
- if (r <= 0)
- return r;
-
- if (a->class != b->class)
- return 0;
-
- if (a->type != b->type)
- return 0;
-
- return 1;
-}
-
-int dns_resource_key_match_rr(const DnsResourceKey *key, DnsResourceRecord *rr, const char *search_domain) {
- int r;
-
- assert(key);
- assert(rr);
-
- if (key == rr->key)
- return 1;
-
- /* Checks if an rr matches the specified key. If a search
- * domain is specified, it will also be checked if the key
- * with the search domain suffixed might match the RR. */
-
- if (rr->key->class != key->class && key->class != DNS_CLASS_ANY)
- return 0;
-
- if (rr->key->type != key->type && key->type != DNS_TYPE_ANY)
- return 0;
-
- r = dns_name_equal(dns_resource_key_name(rr->key), dns_resource_key_name(key));
- if (r != 0)
- return r;
-
- if (search_domain) {
- _cleanup_free_ char *joined = NULL;
-
- r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined);
- if (r < 0)
- return r;
-
- return dns_name_equal(dns_resource_key_name(rr->key), joined);
- }
-
- return 0;
-}
-
-int dns_resource_key_match_cname_or_dname(const DnsResourceKey *key, const DnsResourceKey *cname, const char *search_domain) {
- int r;
-
- assert(key);
- assert(cname);
-
- if (cname->class != key->class && key->class != DNS_CLASS_ANY)
- return 0;
-
- if (cname->type == DNS_TYPE_CNAME)
- r = dns_name_equal(dns_resource_key_name(key), dns_resource_key_name(cname));
- else if (cname->type == DNS_TYPE_DNAME)
- r = dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(cname));
- else
- return 0;
-
- if (r != 0)
- return r;
-
- if (search_domain) {
- _cleanup_free_ char *joined = NULL;
-
- r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined);
- if (r < 0)
- return r;
-
- if (cname->type == DNS_TYPE_CNAME)
- return dns_name_equal(joined, dns_resource_key_name(cname));
- else if (cname->type == DNS_TYPE_DNAME)
- return dns_name_endswith(joined, dns_resource_key_name(cname));
- }
-
- return 0;
-}
-
-int dns_resource_key_match_soa(const DnsResourceKey *key, const DnsResourceKey *soa) {
- assert(soa);
- assert(key);
-
- /* Checks whether 'soa' is a SOA record for the specified key. */
-
- if (soa->class != key->class)
- return 0;
-
- if (soa->type != DNS_TYPE_SOA)
- return 0;
-
- return dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(soa));
-}
-
-static void dns_resource_key_hash_func(const void *i, struct siphash *state) {
- const DnsResourceKey *k = i;
-
- assert(k);
-
- dns_name_hash_func(dns_resource_key_name(k), state);
- siphash24_compress(&k->class, sizeof(k->class), state);
- siphash24_compress(&k->type, sizeof(k->type), state);
-}
-
-static int dns_resource_key_compare_func(const void *a, const void *b) {
- const DnsResourceKey *x = a, *y = b;
- int ret;
-
- ret = dns_name_compare_func(dns_resource_key_name(x), dns_resource_key_name(y));
- if (ret != 0)
- return ret;
-
- if (x->type < y->type)
- return -1;
- if (x->type > y->type)
- return 1;
-
- if (x->class < y->class)
- return -1;
- if (x->class > y->class)
- return 1;
-
- return 0;
-}
-
-const struct hash_ops dns_resource_key_hash_ops = {
- .hash = dns_resource_key_hash_func,
- .compare = dns_resource_key_compare_func
-};
-
-char* dns_resource_key_to_string(const DnsResourceKey *key, char *buf, size_t buf_size) {
- const char *c, *t;
- char *ans = buf;
-
- /* If we cannot convert the CLASS/TYPE into a known string,
- use the format recommended by RFC 3597, Section 5. */
-
- c = dns_class_to_string(key->class);
- t = dns_type_to_string(key->type);
-
- snprintf(buf, buf_size, "%s %s%s%.0u %s%s%.0u",
- dns_resource_key_name(key),
- c ?: "", c ? "" : "CLASS", c ? 0 : key->class,
- t ?: "", t ? "" : "TYPE", t ? 0 : key->class);
-
- return ans;
-}
-
-bool dns_resource_key_reduce(DnsResourceKey **a, DnsResourceKey **b) {
- assert(a);
- assert(b);
-
- /* Try to replace one RR key by another if they are identical, thus saving a bit of memory. Note that we do
- * this only for RR keys, not for RRs themselves, as they carry a lot of additional metadata (where they come
- * from, validity data, and suchlike), and cannot be replaced so easily by other RRs that have the same
- * superficial data. */
-
- if (!*a)
- return false;
- if (!*b)
- return false;
-
- /* We refuse merging const keys */
- if ((*a)->n_ref == (unsigned) -1)
- return false;
- if ((*b)->n_ref == (unsigned) -1)
- return false;
-
- /* Already the same? */
- if (*a == *b)
- return true;
-
- /* Are they really identical? */
- if (dns_resource_key_equal(*a, *b) <= 0)
- return false;
-
- /* Keep the one which already has more references. */
- if ((*a)->n_ref > (*b)->n_ref) {
- dns_resource_key_unref(*b);
- *b = dns_resource_key_ref(*a);
- } else {
- dns_resource_key_unref(*a);
- *a = dns_resource_key_ref(*b);
- }
-
- return true;
-}
-
-DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) {
- DnsResourceRecord *rr;
-
- rr = new0(DnsResourceRecord, 1);
- if (!rr)
- return NULL;
-
- rr->n_ref = 1;
- rr->key = dns_resource_key_ref(key);
- rr->expiry = USEC_INFINITY;
- rr->n_skip_labels_signer = rr->n_skip_labels_source = (unsigned) -1;
-
- return rr;
-}
-
-DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) {
- _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
-
- key = dns_resource_key_new(class, type, name);
- if (!key)
- return NULL;
-
- return dns_resource_record_new(key);
-}
-
-DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) {
- if (!rr)
- return NULL;
-
- assert(rr->n_ref > 0);
- rr->n_ref++;
-
- return rr;
-}
-
-DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) {
- if (!rr)
- return NULL;
-
- assert(rr->n_ref > 0);
-
- if (rr->n_ref > 1) {
- rr->n_ref--;
- return NULL;
- }
-
- if (rr->key) {
- switch(rr->key->type) {
-
- case DNS_TYPE_SRV:
- free(rr->srv.name);
- break;
-
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- free(rr->ptr.name);
- break;
-
- case DNS_TYPE_HINFO:
- free(rr->hinfo.cpu);
- free(rr->hinfo.os);
- break;
-
- case DNS_TYPE_TXT:
- case DNS_TYPE_SPF:
- dns_txt_item_free_all(rr->txt.items);
- break;
-
- case DNS_TYPE_SOA:
- free(rr->soa.mname);
- free(rr->soa.rname);
- break;
-
- case DNS_TYPE_MX:
- free(rr->mx.exchange);
- break;
-
- case DNS_TYPE_DS:
- free(rr->ds.digest);
- break;
-
- case DNS_TYPE_SSHFP:
- free(rr->sshfp.fingerprint);
- break;
-
- case DNS_TYPE_DNSKEY:
- free(rr->dnskey.key);
- break;
-
- case DNS_TYPE_RRSIG:
- free(rr->rrsig.signer);
- free(rr->rrsig.signature);
- break;
-
- case DNS_TYPE_NSEC:
- free(rr->nsec.next_domain_name);
- bitmap_free(rr->nsec.types);
- break;
-
- case DNS_TYPE_NSEC3:
- free(rr->nsec3.next_hashed_name);
- free(rr->nsec3.salt);
- bitmap_free(rr->nsec3.types);
- break;
-
- case DNS_TYPE_LOC:
- case DNS_TYPE_A:
- case DNS_TYPE_AAAA:
- break;
-
- case DNS_TYPE_TLSA:
- free(rr->tlsa.data);
- break;
-
- case DNS_TYPE_CAA:
- free(rr->caa.tag);
- free(rr->caa.value);
- break;
-
- case DNS_TYPE_OPENPGPKEY:
- default:
- free(rr->generic.data);
- }
-
- free(rr->wire_format);
- dns_resource_key_unref(rr->key);
- }
-
- free(rr->to_string);
- return mfree(rr);
-}
-
-int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) {
- _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
- _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
- _cleanup_free_ char *ptr = NULL;
- int r;
-
- assert(ret);
- assert(address);
- assert(hostname);
-
- r = dns_name_reverse(family, address, &ptr);
- if (r < 0)
- return r;
-
- key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr);
- if (!key)
- return -ENOMEM;
-
- ptr = NULL;
-
- rr = dns_resource_record_new(key);
- if (!rr)
- return -ENOMEM;
-
- rr->ptr.name = strdup(hostname);
- if (!rr->ptr.name)
- return -ENOMEM;
-
- *ret = rr;
- rr = NULL;
-
- return 0;
-}
-
-int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name) {
- DnsResourceRecord *rr;
-
- assert(ret);
- assert(address);
- assert(family);
-
- if (family == AF_INET) {
-
- rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, name);
- if (!rr)
- return -ENOMEM;
-
- rr->a.in_addr = address->in;
-
- } else if (family == AF_INET6) {
-
- rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_AAAA, name);
- if (!rr)
- return -ENOMEM;
-
- rr->aaaa.in6_addr = address->in6;
- } else
- return -EAFNOSUPPORT;
-
- *ret = rr;
-
- return 0;
-}
-
-#define FIELD_EQUAL(a, b, field) \
- ((a).field ## _size == (b).field ## _size && \
- memcmp((a).field, (b).field, (a).field ## _size) == 0)
-
-int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) {
- int r;
-
- assert(a);
- assert(b);
-
- if (a == b)
- return 1;
-
- r = dns_resource_key_equal(a->key, b->key);
- if (r <= 0)
- return r;
-
- if (a->unparseable != b->unparseable)
- return 0;
-
- switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) {
-
- case DNS_TYPE_SRV:
- r = dns_name_equal(a->srv.name, b->srv.name);
- if (r <= 0)
- return r;
-
- return a->srv.priority == b->srv.priority &&
- a->srv.weight == b->srv.weight &&
- a->srv.port == b->srv.port;
-
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- return dns_name_equal(a->ptr.name, b->ptr.name);
-
- case DNS_TYPE_HINFO:
- return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) &&
- strcaseeq(a->hinfo.os, b->hinfo.os);
-
- case DNS_TYPE_SPF: /* exactly the same as TXT */
- case DNS_TYPE_TXT:
- return dns_txt_item_equal(a->txt.items, b->txt.items);
-
- case DNS_TYPE_A:
- return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0;
-
- case DNS_TYPE_AAAA:
- return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0;
-
- case DNS_TYPE_SOA:
- r = dns_name_equal(a->soa.mname, b->soa.mname);
- if (r <= 0)
- return r;
- r = dns_name_equal(a->soa.rname, b->soa.rname);
- if (r <= 0)
- return r;
-
- return a->soa.serial == b->soa.serial &&
- a->soa.refresh == b->soa.refresh &&
- a->soa.retry == b->soa.retry &&
- a->soa.expire == b->soa.expire &&
- a->soa.minimum == b->soa.minimum;
-
- case DNS_TYPE_MX:
- if (a->mx.priority != b->mx.priority)
- return 0;
-
- return dns_name_equal(a->mx.exchange, b->mx.exchange);
-
- case DNS_TYPE_LOC:
- assert(a->loc.version == b->loc.version);
-
- return a->loc.size == b->loc.size &&
- a->loc.horiz_pre == b->loc.horiz_pre &&
- a->loc.vert_pre == b->loc.vert_pre &&
- a->loc.latitude == b->loc.latitude &&
- a->loc.longitude == b->loc.longitude &&
- a->loc.altitude == b->loc.altitude;
-
- case DNS_TYPE_DS:
- return a->ds.key_tag == b->ds.key_tag &&
- a->ds.algorithm == b->ds.algorithm &&
- a->ds.digest_type == b->ds.digest_type &&
- FIELD_EQUAL(a->ds, b->ds, digest);
-
- case DNS_TYPE_SSHFP:
- return a->sshfp.algorithm == b->sshfp.algorithm &&
- a->sshfp.fptype == b->sshfp.fptype &&
- FIELD_EQUAL(a->sshfp, b->sshfp, fingerprint);
-
- case DNS_TYPE_DNSKEY:
- return a->dnskey.flags == b->dnskey.flags &&
- a->dnskey.protocol == b->dnskey.protocol &&
- a->dnskey.algorithm == b->dnskey.algorithm &&
- FIELD_EQUAL(a->dnskey, b->dnskey, key);
-
- case DNS_TYPE_RRSIG:
- /* do the fast comparisons first */
- return a->rrsig.type_covered == b->rrsig.type_covered &&
- a->rrsig.algorithm == b->rrsig.algorithm &&
- a->rrsig.labels == b->rrsig.labels &&
- a->rrsig.original_ttl == b->rrsig.original_ttl &&
- a->rrsig.expiration == b->rrsig.expiration &&
- a->rrsig.inception == b->rrsig.inception &&
- a->rrsig.key_tag == b->rrsig.key_tag &&
- FIELD_EQUAL(a->rrsig, b->rrsig, signature) &&
- dns_name_equal(a->rrsig.signer, b->rrsig.signer);
-
- case DNS_TYPE_NSEC:
- return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) &&
- bitmap_equal(a->nsec.types, b->nsec.types);
-
- case DNS_TYPE_NSEC3:
- return a->nsec3.algorithm == b->nsec3.algorithm &&
- a->nsec3.flags == b->nsec3.flags &&
- a->nsec3.iterations == b->nsec3.iterations &&
- FIELD_EQUAL(a->nsec3, b->nsec3, salt) &&
- FIELD_EQUAL(a->nsec3, b->nsec3, next_hashed_name) &&
- bitmap_equal(a->nsec3.types, b->nsec3.types);
-
- case DNS_TYPE_TLSA:
- return a->tlsa.cert_usage == b->tlsa.cert_usage &&
- a->tlsa.selector == b->tlsa.selector &&
- a->tlsa.matching_type == b->tlsa.matching_type &&
- FIELD_EQUAL(a->tlsa, b->tlsa, data);
-
- case DNS_TYPE_CAA:
- return a->caa.flags == b->caa.flags &&
- streq(a->caa.tag, b->caa.tag) &&
- FIELD_EQUAL(a->caa, b->caa, value);
-
- case DNS_TYPE_OPENPGPKEY:
- default:
- return FIELD_EQUAL(a->generic, b->generic, data);
- }
-}
-
-static char* format_location(uint32_t latitude, uint32_t longitude, uint32_t altitude,
- uint8_t size, uint8_t horiz_pre, uint8_t vert_pre) {
- char *s;
- char NS = latitude >= 1U<<31 ? 'N' : 'S';
- char EW = longitude >= 1U<<31 ? 'E' : 'W';
-
- int lat = latitude >= 1U<<31 ? (int) (latitude - (1U<<31)) : (int) ((1U<<31) - latitude);
- int lon = longitude >= 1U<<31 ? (int) (longitude - (1U<<31)) : (int) ((1U<<31) - longitude);
- double alt = altitude >= 10000000u ? altitude - 10000000u : -(double)(10000000u - altitude);
- double siz = (size >> 4) * exp10((double) (size & 0xF));
- double hor = (horiz_pre >> 4) * exp10((double) (horiz_pre & 0xF));
- double ver = (vert_pre >> 4) * exp10((double) (vert_pre & 0xF));
-
- if (asprintf(&s, "%d %d %.3f %c %d %d %.3f %c %.2fm %.2fm %.2fm %.2fm",
- (lat / 60000 / 60),
- (lat / 60000) % 60,
- (lat % 60000) / 1000.,
- NS,
- (lon / 60000 / 60),
- (lon / 60000) % 60,
- (lon % 60000) / 1000.,
- EW,
- alt / 100.,
- siz / 100.,
- hor / 100.,
- ver / 100.) < 0)
- return NULL;
-
- return s;
-}
-
-static int format_timestamp_dns(char *buf, size_t l, time_t sec) {
- struct tm tm;
-
- assert(buf);
- assert(l > strlen("YYYYMMDDHHmmSS"));
-
- if (!gmtime_r(&sec, &tm))
- return -EINVAL;
-
- if (strftime(buf, l, "%Y%m%d%H%M%S", &tm) <= 0)
- return -EINVAL;
-
- return 0;
-}
-
-static char *format_types(Bitmap *types) {
- _cleanup_strv_free_ char **strv = NULL;
- _cleanup_free_ char *str = NULL;
- Iterator i;
- unsigned type;
- int r;
-
- BITMAP_FOREACH(type, types, i) {
- if (dns_type_to_string(type)) {
- r = strv_extend(&strv, dns_type_to_string(type));
- if (r < 0)
- return NULL;
- } else {
- char *t;
-
- r = asprintf(&t, "TYPE%u", type);
- if (r < 0)
- return NULL;
-
- r = strv_consume(&strv, t);
- if (r < 0)
- return NULL;
- }
- }
-
- str = strv_join(strv, " ");
- if (!str)
- return NULL;
-
- return strjoin("( ", str, " )", NULL);
-}
-
-static char *format_txt(DnsTxtItem *first) {
- DnsTxtItem *i;
- size_t c = 1;
- char *p, *s;
-
- LIST_FOREACH(items, i, first)
- c += i->length * 4 + 3;
-
- p = s = new(char, c);
- if (!s)
- return NULL;
-
- LIST_FOREACH(items, i, first) {
- size_t j;
-
- if (i != first)
- *(p++) = ' ';
-
- *(p++) = '"';
-
- for (j = 0; j < i->length; j++) {
- if (i->data[j] < ' ' || i->data[j] == '"' || i->data[j] >= 127) {
- *(p++) = '\\';
- *(p++) = '0' + (i->data[j] / 100);
- *(p++) = '0' + ((i->data[j] / 10) % 10);
- *(p++) = '0' + (i->data[j] % 10);
- } else
- *(p++) = i->data[j];
- }
-
- *(p++) = '"';
- }
-
- *p = 0;
- return s;
-}
-
-const char *dns_resource_record_to_string(DnsResourceRecord *rr) {
- _cleanup_free_ char *t = NULL;
- char *s, k[DNS_RESOURCE_KEY_STRING_MAX];
- int r;
-
- assert(rr);
-
- if (rr->to_string)
- return rr->to_string;
-
- dns_resource_key_to_string(rr->key, k, sizeof(k));
-
- switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
-
- case DNS_TYPE_SRV:
- r = asprintf(&s, "%s %u %u %u %s",
- k,
- rr->srv.priority,
- rr->srv.weight,
- rr->srv.port,
- strna(rr->srv.name));
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- s = strjoin(k, " ", rr->ptr.name, NULL);
- if (!s)
- return NULL;
-
- break;
-
- case DNS_TYPE_HINFO:
- s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL);
- if (!s)
- return NULL;
- break;
-
- case DNS_TYPE_SPF: /* exactly the same as TXT */
- case DNS_TYPE_TXT:
- t = format_txt(rr->txt.items);
- if (!t)
- return NULL;
-
- s = strjoin(k, " ", t, NULL);
- if (!s)
- return NULL;
- break;
-
- case DNS_TYPE_A: {
- _cleanup_free_ char *x = NULL;
-
- r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x);
- if (r < 0)
- return NULL;
-
- s = strjoin(k, " ", x, NULL);
- if (!s)
- return NULL;
- break;
- }
-
- case DNS_TYPE_AAAA:
- r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t);
- if (r < 0)
- return NULL;
-
- s = strjoin(k, " ", t, NULL);
- if (!s)
- return NULL;
- break;
-
- case DNS_TYPE_SOA:
- r = asprintf(&s, "%s %s %s %u %u %u %u %u",
- k,
- strna(rr->soa.mname),
- strna(rr->soa.rname),
- rr->soa.serial,
- rr->soa.refresh,
- rr->soa.retry,
- rr->soa.expire,
- rr->soa.minimum);
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_MX:
- r = asprintf(&s, "%s %u %s",
- k,
- rr->mx.priority,
- rr->mx.exchange);
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_LOC:
- assert(rr->loc.version == 0);
-
- t = format_location(rr->loc.latitude,
- rr->loc.longitude,
- rr->loc.altitude,
- rr->loc.size,
- rr->loc.horiz_pre,
- rr->loc.vert_pre);
- if (!t)
- return NULL;
-
- s = strjoin(k, " ", t, NULL);
- if (!s)
- return NULL;
- break;
-
- case DNS_TYPE_DS:
- t = hexmem(rr->ds.digest, rr->ds.digest_size);
- if (!t)
- return NULL;
-
- r = asprintf(&s, "%s %u %u %u %s",
- k,
- rr->ds.key_tag,
- rr->ds.algorithm,
- rr->ds.digest_type,
- t);
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_SSHFP:
- t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
- if (!t)
- return NULL;
-
- r = asprintf(&s, "%s %u %u %s",
- k,
- rr->sshfp.algorithm,
- rr->sshfp.fptype,
- t);
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_DNSKEY: {
- _cleanup_free_ char *alg = NULL;
- char *ss;
- int n;
- uint16_t key_tag;
-
- key_tag = dnssec_keytag(rr, true);
-
- r = dnssec_algorithm_to_string_alloc(rr->dnskey.algorithm, &alg);
- if (r < 0)
- return NULL;
-
- r = asprintf(&s, "%s %u %u %s %n",
- k,
- rr->dnskey.flags,
- rr->dnskey.protocol,
- alg,
- &n);
- if (r < 0)
- return NULL;
-
- r = base64_append(&s, n,
- rr->dnskey.key, rr->dnskey.key_size,
- 8, columns());
- if (r < 0)
- return NULL;
-
- r = asprintf(&ss, "%s\n"
- " -- Flags:%s%s%s\n"
- " -- Key tag: %u",
- s,
- rr->dnskey.flags & DNSKEY_FLAG_SEP ? " SEP" : "",
- rr->dnskey.flags & DNSKEY_FLAG_REVOKE ? " REVOKE" : "",
- rr->dnskey.flags & DNSKEY_FLAG_ZONE_KEY ? " ZONE_KEY" : "",
- key_tag);
- if (r < 0)
- return NULL;
- free(s);
- s = ss;
-
- break;
- }
-
- case DNS_TYPE_RRSIG: {
- _cleanup_free_ char *alg = NULL;
- char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1];
- const char *type;
- int n;
-
- type = dns_type_to_string(rr->rrsig.type_covered);
-
- r = dnssec_algorithm_to_string_alloc(rr->rrsig.algorithm, &alg);
- if (r < 0)
- return NULL;
-
- r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration);
- if (r < 0)
- return NULL;
-
- r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception);
- if (r < 0)
- return NULL;
-
- /* TYPE?? follows
- * http://tools.ietf.org/html/rfc3597#section-5 */
-
- r = asprintf(&s, "%s %s%.*u %s %u %u %s %s %u %s %n",
- k,
- type ?: "TYPE",
- type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered,
- alg,
- rr->rrsig.labels,
- rr->rrsig.original_ttl,
- expiration,
- inception,
- rr->rrsig.key_tag,
- rr->rrsig.signer,
- &n);
- if (r < 0)
- return NULL;
-
- r = base64_append(&s, n,
- rr->rrsig.signature, rr->rrsig.signature_size,
- 8, columns());
- if (r < 0)
- return NULL;
-
- break;
- }
-
- case DNS_TYPE_NSEC:
- t = format_types(rr->nsec.types);
- if (!t)
- return NULL;
-
- r = asprintf(&s, "%s %s %s",
- k,
- rr->nsec.next_domain_name,
- t);
- if (r < 0)
- return NULL;
- break;
-
- case DNS_TYPE_NSEC3: {
- _cleanup_free_ char *salt = NULL, *hash = NULL;
-
- if (rr->nsec3.salt_size > 0) {
- salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size);
- if (!salt)
- return NULL;
- }
-
- hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false);
- if (!hash)
- return NULL;
-
- t = format_types(rr->nsec3.types);
- if (!t)
- return NULL;
-
- r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s",
- k,
- rr->nsec3.algorithm,
- rr->nsec3.flags,
- rr->nsec3.iterations,
- rr->nsec3.salt_size > 0 ? salt : "-",
- hash,
- t);
- if (r < 0)
- return NULL;
-
- break;
- }
-
- case DNS_TYPE_TLSA: {
- const char *cert_usage, *selector, *matching_type;
-
- cert_usage = tlsa_cert_usage_to_string(rr->tlsa.cert_usage);
- selector = tlsa_selector_to_string(rr->tlsa.selector);
- matching_type = tlsa_matching_type_to_string(rr->tlsa.matching_type);
-
- t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
- if (!t)
- return NULL;
-
- r = asprintf(&s,
- "%s %u %u %u %s\n"
- " -- Cert. usage: %s\n"
- " -- Selector: %s\n"
- " -- Matching type: %s",
- k,
- rr->tlsa.cert_usage,
- rr->tlsa.selector,
- rr->tlsa.matching_type,
- t,
- cert_usage,
- selector,
- matching_type);
- if (r < 0)
- return NULL;
-
- break;
- }
-
- case DNS_TYPE_CAA: {
- _cleanup_free_ char *value;
-
- value = octescape(rr->caa.value, rr->caa.value_size);
- if (!value)
- return NULL;
-
- r = asprintf(&s, "%s %u %s \"%s\"%s%s%s%.0u",
- k,
- rr->caa.flags,
- rr->caa.tag,
- value,
- rr->caa.flags ? "\n -- Flags:" : "",
- rr->caa.flags & CAA_FLAG_CRITICAL ? " critical" : "",
- rr->caa.flags & ~CAA_FLAG_CRITICAL ? " " : "",
- rr->caa.flags & ~CAA_FLAG_CRITICAL);
- if (r < 0)
- return NULL;
-
- break;
- }
-
- case DNS_TYPE_OPENPGPKEY: {
- int n;
-
- r = asprintf(&s, "%s %n",
- k,
- &n);
- if (r < 0)
- return NULL;
-
- r = base64_append(&s, n,
- rr->generic.data, rr->generic.data_size,
- 8, columns());
- if (r < 0)
- return NULL;
- break;
- }
-
- default:
- t = hexmem(rr->generic.data, rr->generic.data_size);
- if (!t)
- return NULL;
-
- /* Format as documented in RFC 3597, Section 5 */
- r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.data_size, t);
- if (r < 0)
- return NULL;
- break;
- }
-
- rr->to_string = s;
- return s;
-}
-
-ssize_t dns_resource_record_payload(DnsResourceRecord *rr, void **out) {
- assert(rr);
- assert(out);
-
- switch(rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
- case DNS_TYPE_SRV:
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- case DNS_TYPE_HINFO:
- case DNS_TYPE_SPF:
- case DNS_TYPE_TXT:
- case DNS_TYPE_A:
- case DNS_TYPE_AAAA:
- case DNS_TYPE_SOA:
- case DNS_TYPE_MX:
- case DNS_TYPE_LOC:
- case DNS_TYPE_DS:
- case DNS_TYPE_DNSKEY:
- case DNS_TYPE_RRSIG:
- case DNS_TYPE_NSEC:
- case DNS_TYPE_NSEC3:
- return -EINVAL;
-
- case DNS_TYPE_SSHFP:
- *out = rr->sshfp.fingerprint;
- return rr->sshfp.fingerprint_size;
-
- case DNS_TYPE_TLSA:
- *out = rr->tlsa.data;
- return rr->tlsa.data_size;
-
-
- case DNS_TYPE_OPENPGPKEY:
- default:
- *out = rr->generic.data;
- return rr->generic.data_size;
- }
-}
-
-int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) {
-
- DnsPacket packet = {
- .n_ref = 1,
- .protocol = DNS_PROTOCOL_DNS,
- .on_stack = true,
- .refuse_compression = true,
- .canonical_form = canonical,
- };
-
- size_t start, rds;
- int r;
-
- assert(rr);
-
- /* Generates the RR in wire-format, optionally in the
- * canonical form as discussed in the DNSSEC RFC 4034, Section
- * 6.2. We allocate a throw-away DnsPacket object on the stack
- * here, because we need some book-keeping for memory
- * management, and can reuse the DnsPacket serializer, that
- * can generate the canonical form, too, but also knows label
- * compression and suchlike. */
-
- if (rr->wire_format && rr->wire_format_canonical == canonical)
- return 0;
-
- r = dns_packet_append_rr(&packet, rr, &start, &rds);
- if (r < 0)
- return r;
-
- assert(start == 0);
- assert(packet._data);
-
- free(rr->wire_format);
- rr->wire_format = packet._data;
- rr->wire_format_size = packet.size;
- rr->wire_format_rdata_offset = rds;
- rr->wire_format_canonical = canonical;
-
- packet._data = NULL;
- dns_packet_unref(&packet);
-
- return 0;
-}
-
-int dns_resource_record_signer(DnsResourceRecord *rr, const char **ret) {
- const char *n;
- int r;
-
- assert(rr);
- assert(ret);
-
- /* Returns the RRset's signer, if it is known. */
-
- if (rr->n_skip_labels_signer == (unsigned) -1)
- return -ENODATA;
-
- n = dns_resource_key_name(rr->key);
- r = dns_name_skip(n, rr->n_skip_labels_signer, &n);
- if (r < 0)
- return r;
- if (r == 0)
- return -EINVAL;
-
- *ret = n;
- return 0;
-}
-
-int dns_resource_record_source(DnsResourceRecord *rr, const char **ret) {
- const char *n;
- int r;
-
- assert(rr);
- assert(ret);
-
- /* Returns the RRset's synthesizing source, if it is known. */
-
- if (rr->n_skip_labels_source == (unsigned) -1)
- return -ENODATA;
-
- n = dns_resource_key_name(rr->key);
- r = dns_name_skip(n, rr->n_skip_labels_source, &n);
- if (r < 0)
- return r;
- if (r == 0)
- return -EINVAL;
-
- *ret = n;
- return 0;
-}
-
-int dns_resource_record_is_signer(DnsResourceRecord *rr, const char *zone) {
- const char *signer;
- int r;
-
- assert(rr);
-
- r = dns_resource_record_signer(rr, &signer);
- if (r < 0)
- return r;
-
- return dns_name_equal(zone, signer);
-}
-
-int dns_resource_record_is_synthetic(DnsResourceRecord *rr) {
- int r;
-
- assert(rr);
-
- /* Returns > 0 if the RR is generated from a wildcard, and is not the asterisk name itself */
-
- if (rr->n_skip_labels_source == (unsigned) -1)
- return -ENODATA;
-
- if (rr->n_skip_labels_source == 0)
- return 0;
-
- if (rr->n_skip_labels_source > 1)
- return 1;
-
- r = dns_name_startswith(dns_resource_key_name(rr->key), "*");
- if (r < 0)
- return r;
-
- return !r;
-}
-
-void dns_resource_record_hash_func(const void *i, struct siphash *state) {
- const DnsResourceRecord *rr = i;
-
- assert(rr);
-
- dns_resource_key_hash_func(rr->key, state);
-
- switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
-
- case DNS_TYPE_SRV:
- siphash24_compress(&rr->srv.priority, sizeof(rr->srv.priority), state);
- siphash24_compress(&rr->srv.weight, sizeof(rr->srv.weight), state);
- siphash24_compress(&rr->srv.port, sizeof(rr->srv.port), state);
- dns_name_hash_func(rr->srv.name, state);
- break;
-
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- dns_name_hash_func(rr->ptr.name, state);
- break;
-
- case DNS_TYPE_HINFO:
- string_hash_func(rr->hinfo.cpu, state);
- string_hash_func(rr->hinfo.os, state);
- break;
-
- case DNS_TYPE_TXT:
- case DNS_TYPE_SPF: {
- DnsTxtItem *j;
-
- LIST_FOREACH(items, j, rr->txt.items) {
- siphash24_compress(j->data, j->length, state);
-
- /* Add an extra NUL byte, so that "a" followed by "b" doesn't result in the same hash as "ab"
- * followed by "". */
- siphash24_compress_byte(0, state);
- }
- break;
- }
-
- case DNS_TYPE_A:
- siphash24_compress(&rr->a.in_addr, sizeof(rr->a.in_addr), state);
- break;
-
- case DNS_TYPE_AAAA:
- siphash24_compress(&rr->aaaa.in6_addr, sizeof(rr->aaaa.in6_addr), state);
- break;
-
- case DNS_TYPE_SOA:
- dns_name_hash_func(rr->soa.mname, state);
- dns_name_hash_func(rr->soa.rname, state);
- siphash24_compress(&rr->soa.serial, sizeof(rr->soa.serial), state);
- siphash24_compress(&rr->soa.refresh, sizeof(rr->soa.refresh), state);
- siphash24_compress(&rr->soa.retry, sizeof(rr->soa.retry), state);
- siphash24_compress(&rr->soa.expire, sizeof(rr->soa.expire), state);
- siphash24_compress(&rr->soa.minimum, sizeof(rr->soa.minimum), state);
- break;
-
- case DNS_TYPE_MX:
- siphash24_compress(&rr->mx.priority, sizeof(rr->mx.priority), state);
- dns_name_hash_func(rr->mx.exchange, state);
- break;
-
- case DNS_TYPE_LOC:
- siphash24_compress(&rr->loc.version, sizeof(rr->loc.version), state);
- siphash24_compress(&rr->loc.size, sizeof(rr->loc.size), state);
- siphash24_compress(&rr->loc.horiz_pre, sizeof(rr->loc.horiz_pre), state);
- siphash24_compress(&rr->loc.vert_pre, sizeof(rr->loc.vert_pre), state);
- siphash24_compress(&rr->loc.latitude, sizeof(rr->loc.latitude), state);
- siphash24_compress(&rr->loc.longitude, sizeof(rr->loc.longitude), state);
- siphash24_compress(&rr->loc.altitude, sizeof(rr->loc.altitude), state);
- break;
-
- case DNS_TYPE_SSHFP:
- siphash24_compress(&rr->sshfp.algorithm, sizeof(rr->sshfp.algorithm), state);
- siphash24_compress(&rr->sshfp.fptype, sizeof(rr->sshfp.fptype), state);
- siphash24_compress(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size, state);
- break;
-
- case DNS_TYPE_DNSKEY:
- siphash24_compress(&rr->dnskey.flags, sizeof(rr->dnskey.flags), state);
- siphash24_compress(&rr->dnskey.protocol, sizeof(rr->dnskey.protocol), state);
- siphash24_compress(&rr->dnskey.algorithm, sizeof(rr->dnskey.algorithm), state);
- siphash24_compress(rr->dnskey.key, rr->dnskey.key_size, state);
- break;
-
- case DNS_TYPE_RRSIG:
- siphash24_compress(&rr->rrsig.type_covered, sizeof(rr->rrsig.type_covered), state);
- siphash24_compress(&rr->rrsig.algorithm, sizeof(rr->rrsig.algorithm), state);
- siphash24_compress(&rr->rrsig.labels, sizeof(rr->rrsig.labels), state);
- siphash24_compress(&rr->rrsig.original_ttl, sizeof(rr->rrsig.original_ttl), state);
- siphash24_compress(&rr->rrsig.expiration, sizeof(rr->rrsig.expiration), state);
- siphash24_compress(&rr->rrsig.inception, sizeof(rr->rrsig.inception), state);
- siphash24_compress(&rr->rrsig.key_tag, sizeof(rr->rrsig.key_tag), state);
- dns_name_hash_func(rr->rrsig.signer, state);
- siphash24_compress(rr->rrsig.signature, rr->rrsig.signature_size, state);
- break;
-
- case DNS_TYPE_NSEC:
- dns_name_hash_func(rr->nsec.next_domain_name, state);
- /* FIXME: we leave out the type bitmap here. Hash
- * would be better if we'd take it into account
- * too. */
- break;
-
- case DNS_TYPE_DS:
- siphash24_compress(&rr->ds.key_tag, sizeof(rr->ds.key_tag), state);
- siphash24_compress(&rr->ds.algorithm, sizeof(rr->ds.algorithm), state);
- siphash24_compress(&rr->ds.digest_type, sizeof(rr->ds.digest_type), state);
- siphash24_compress(rr->ds.digest, rr->ds.digest_size, state);
- break;
-
- case DNS_TYPE_NSEC3:
- siphash24_compress(&rr->nsec3.algorithm, sizeof(rr->nsec3.algorithm), state);
- siphash24_compress(&rr->nsec3.flags, sizeof(rr->nsec3.flags), state);
- siphash24_compress(&rr->nsec3.iterations, sizeof(rr->nsec3.iterations), state);
- siphash24_compress(rr->nsec3.salt, rr->nsec3.salt_size, state);
- siphash24_compress(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, state);
- /* FIXME: We leave the bitmaps out */
- break;
-
- case DNS_TYPE_TLSA:
- siphash24_compress(&rr->tlsa.cert_usage, sizeof(rr->tlsa.cert_usage), state);
- siphash24_compress(&rr->tlsa.selector, sizeof(rr->tlsa.selector), state);
- siphash24_compress(&rr->tlsa.matching_type, sizeof(rr->tlsa.matching_type), state);
- siphash24_compress(rr->tlsa.data, rr->tlsa.data_size, state);
- break;
-
- case DNS_TYPE_CAA:
- siphash24_compress(&rr->caa.flags, sizeof(rr->caa.flags), state);
- string_hash_func(rr->caa.tag, state);
- siphash24_compress(rr->caa.value, rr->caa.value_size, state);
- break;
-
- case DNS_TYPE_OPENPGPKEY:
- default:
- siphash24_compress(rr->generic.data, rr->generic.data_size, state);
- break;
- }
-}
-
-static int dns_resource_record_compare_func(const void *a, const void *b) {
- const DnsResourceRecord *x = a, *y = b;
- int ret;
-
- ret = dns_resource_key_compare_func(x->key, y->key);
- if (ret != 0)
- return ret;
-
- if (dns_resource_record_equal(x, y))
- return 0;
-
- /* This is a bit dirty, we don't implement proper ordering, but
- * the hashtable doesn't need ordering anyway, hence we don't
- * care. */
- return x < y ? -1 : 1;
-}
-
-const struct hash_ops dns_resource_record_hash_ops = {
- .hash = dns_resource_record_hash_func,
- .compare = dns_resource_record_compare_func,
-};
-
-DnsResourceRecord *dns_resource_record_copy(DnsResourceRecord *rr) {
- _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *copy = NULL;
- DnsResourceRecord *t;
-
- assert(rr);
-
- copy = dns_resource_record_new(rr->key);
- if (!copy)
- return NULL;
-
- copy->ttl = rr->ttl;
- copy->expiry = rr->expiry;
- copy->n_skip_labels_signer = rr->n_skip_labels_signer;
- copy->n_skip_labels_source = rr->n_skip_labels_source;
- copy->unparseable = rr->unparseable;
-
- switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) {
-
- case DNS_TYPE_SRV:
- copy->srv.priority = rr->srv.priority;
- copy->srv.weight = rr->srv.weight;
- copy->srv.port = rr->srv.port;
- copy->srv.name = strdup(rr->srv.name);
- if (!copy->srv.name)
- return NULL;
- break;
-
- case DNS_TYPE_PTR:
- case DNS_TYPE_NS:
- case DNS_TYPE_CNAME:
- case DNS_TYPE_DNAME:
- copy->ptr.name = strdup(rr->ptr.name);
- if (!copy->ptr.name)
- return NULL;
- break;
-
- case DNS_TYPE_HINFO:
- copy->hinfo.cpu = strdup(rr->hinfo.cpu);
- if (!copy->hinfo.cpu)
- return NULL;
-
- copy->hinfo.os = strdup(rr->hinfo.os);
- if(!copy->hinfo.os)
- return NULL;
- break;
-
- case DNS_TYPE_TXT:
- case DNS_TYPE_SPF:
- copy->txt.items = dns_txt_item_copy(rr->txt.items);
- if (!copy->txt.items)
- return NULL;
- break;
-
- case DNS_TYPE_A:
- copy->a = rr->a;
- break;
-
- case DNS_TYPE_AAAA:
- copy->aaaa = rr->aaaa;
- break;
-
- case DNS_TYPE_SOA:
- copy->soa.mname = strdup(rr->soa.mname);
- if (!copy->soa.mname)
- return NULL;
- copy->soa.rname = strdup(rr->soa.rname);
- if (!copy->soa.rname)
- return NULL;
- copy->soa.serial = rr->soa.serial;
- copy->soa.refresh = rr->soa.refresh;
- copy->soa.retry = rr->soa.retry;
- copy->soa.expire = rr->soa.expire;
- copy->soa.minimum = rr->soa.minimum;
- break;
-
- case DNS_TYPE_MX:
- copy->mx.priority = rr->mx.priority;
- copy->mx.exchange = strdup(rr->mx.exchange);
- if (!copy->mx.exchange)
- return NULL;
- break;
-
- case DNS_TYPE_LOC:
- copy->loc = rr->loc;
- break;
-
- case DNS_TYPE_SSHFP:
- copy->sshfp.algorithm = rr->sshfp.algorithm;
- copy->sshfp.fptype = rr->sshfp.fptype;
- copy->sshfp.fingerprint = memdup(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size);
- if (!copy->sshfp.fingerprint)
- return NULL;
- copy->sshfp.fingerprint_size = rr->sshfp.fingerprint_size;
- break;
-
- case DNS_TYPE_DNSKEY:
- copy->dnskey.flags = rr->dnskey.flags;
- copy->dnskey.protocol = rr->dnskey.protocol;
- copy->dnskey.algorithm = rr->dnskey.algorithm;
- copy->dnskey.key = memdup(rr->dnskey.key, rr->dnskey.key_size);
- if (!copy->dnskey.key)
- return NULL;
- copy->dnskey.key_size = rr->dnskey.key_size;
- break;
-
- case DNS_TYPE_RRSIG:
- copy->rrsig.type_covered = rr->rrsig.type_covered;
- copy->rrsig.algorithm = rr->rrsig.algorithm;
- copy->rrsig.labels = rr->rrsig.labels;
- copy->rrsig.original_ttl = rr->rrsig.original_ttl;
- copy->rrsig.expiration = rr->rrsig.expiration;
- copy->rrsig.inception = rr->rrsig.inception;
- copy->rrsig.key_tag = rr->rrsig.key_tag;
- copy->rrsig.signer = strdup(rr->rrsig.signer);
- if (!copy->rrsig.signer)
- return NULL;
- copy->rrsig.signature = memdup(rr->rrsig.signature, rr->rrsig.signature_size);
- if (!copy->rrsig.signature)
- return NULL;
- copy->rrsig.signature_size = rr->rrsig.signature_size;
- break;
-
- case DNS_TYPE_NSEC:
- copy->nsec.next_domain_name = strdup(rr->nsec.next_domain_name);
- if (!copy->nsec.next_domain_name)
- return NULL;
- copy->nsec.types = bitmap_copy(rr->nsec.types);
- if (!copy->nsec.types)
- return NULL;
- break;
-
- case DNS_TYPE_DS:
- copy->ds.key_tag = rr->ds.key_tag;
- copy->ds.algorithm = rr->ds.algorithm;
- copy->ds.digest_type = rr->ds.digest_type;
- copy->ds.digest = memdup(rr->ds.digest, rr->ds.digest_size);
- if (!copy->ds.digest)
- return NULL;
- copy->ds.digest_size = rr->ds.digest_size;
- break;
-
- case DNS_TYPE_NSEC3:
- copy->nsec3.algorithm = rr->nsec3.algorithm;
- copy->nsec3.flags = rr->nsec3.flags;
- copy->nsec3.iterations = rr->nsec3.iterations;
- copy->nsec3.salt = memdup(rr->nsec3.salt, rr->nsec3.salt_size);
- if (!copy->nsec3.salt)
- return NULL;
- copy->nsec3.salt_size = rr->nsec3.salt_size;
- copy->nsec3.next_hashed_name = memdup(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size);
- if (!copy->nsec3.next_hashed_name_size)
- return NULL;
- copy->nsec3.next_hashed_name_size = rr->nsec3.next_hashed_name_size;
- copy->nsec3.types = bitmap_copy(rr->nsec3.types);
- if (!copy->nsec3.types)
- return NULL;
- break;
-
- case DNS_TYPE_TLSA:
- copy->tlsa.cert_usage = rr->tlsa.cert_usage;
- copy->tlsa.selector = rr->tlsa.selector;
- copy->tlsa.matching_type = rr->tlsa.matching_type;
- copy->tlsa.data = memdup(rr->tlsa.data, rr->tlsa.data_size);
- if (!copy->tlsa.data)
- return NULL;
- copy->tlsa.data_size = rr->tlsa.data_size;
- break;
-
- case DNS_TYPE_CAA:
- copy->caa.flags = rr->caa.flags;
- copy->caa.tag = strdup(rr->caa.tag);
- if (!copy->caa.tag)
- return NULL;
- copy->caa.value = memdup(rr->caa.value, rr->caa.value_size);
- if (!copy->caa.value)
- return NULL;
- copy->caa.value_size = rr->caa.value_size;
- break;
-
- case DNS_TYPE_OPT:
- default:
- copy->generic.data = memdup(rr->generic.data, rr->generic.data_size);
- if (!copy->generic.data)
- return NULL;
- copy->generic.data_size = rr->generic.data_size;
- break;
- }
-
- t = copy;
- copy = NULL;
-
- return t;
-}
-
-int dns_resource_record_clamp_ttl(DnsResourceRecord **rr, uint32_t max_ttl) {
- DnsResourceRecord *old_rr, *new_rr;
- uint32_t new_ttl;
-
- assert(rr);
- old_rr = *rr;
-
- if (old_rr->key->type == DNS_TYPE_OPT)
- return -EINVAL;
-
- new_ttl = MIN(old_rr->ttl, max_ttl);
- if (new_ttl == old_rr->ttl)
- return 0;
-
- if (old_rr->n_ref == 1) {
- /* Patch in place */
- old_rr->ttl = new_ttl;
- return 1;
- }
-
- new_rr = dns_resource_record_copy(old_rr);
- if (!new_rr)
- return -ENOMEM;
-
- new_rr->ttl = new_ttl;
-
- dns_resource_record_unref(*rr);
- *rr = new_rr;
-
- return 1;
-}
-
-DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) {
- DnsTxtItem *n;
-
- if (!i)
- return NULL;
-
- n = i->items_next;
-
- free(i);
- return dns_txt_item_free_all(n);
-}
-
-bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b) {
-
- if (a == b)
- return true;
-
- if (!a != !b)
- return false;
-
- if (!a)
- return true;
-
- if (a->length != b->length)
- return false;
-
- if (memcmp(a->data, b->data, a->length) != 0)
- return false;
-
- return dns_txt_item_equal(a->items_next, b->items_next);
-}
-
-DnsTxtItem *dns_txt_item_copy(DnsTxtItem *first) {
- DnsTxtItem *i, *copy = NULL, *end = NULL;
-
- LIST_FOREACH(items, i, first) {
- DnsTxtItem *j;
-
- j = memdup(i, offsetof(DnsTxtItem, data) + i->length + 1);
- if (!j) {
- dns_txt_item_free_all(copy);
- return NULL;
- }
-
- LIST_INSERT_AFTER(items, copy, end, j);
- end = j;
- }
-
- return copy;
-}
-
-static const char* const dnssec_algorithm_table[_DNSSEC_ALGORITHM_MAX_DEFINED] = {
- /* Mnemonics as listed on https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml */
- [DNSSEC_ALGORITHM_RSAMD5] = "RSAMD5",
- [DNSSEC_ALGORITHM_DH] = "DH",
- [DNSSEC_ALGORITHM_DSA] = "DSA",
- [DNSSEC_ALGORITHM_ECC] = "ECC",
- [DNSSEC_ALGORITHM_RSASHA1] = "RSASHA1",
- [DNSSEC_ALGORITHM_DSA_NSEC3_SHA1] = "DSA-NSEC3-SHA1",
- [DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1] = "RSASHA1-NSEC3-SHA1",
- [DNSSEC_ALGORITHM_RSASHA256] = "RSASHA256",
- [DNSSEC_ALGORITHM_RSASHA512] = "RSASHA512",
- [DNSSEC_ALGORITHM_ECC_GOST] = "ECC-GOST",
- [DNSSEC_ALGORITHM_ECDSAP256SHA256] = "ECDSAP256SHA256",
- [DNSSEC_ALGORITHM_ECDSAP384SHA384] = "ECDSAP384SHA384",
- [DNSSEC_ALGORITHM_INDIRECT] = "INDIRECT",
- [DNSSEC_ALGORITHM_PRIVATEDNS] = "PRIVATEDNS",
- [DNSSEC_ALGORITHM_PRIVATEOID] = "PRIVATEOID",
-};
-DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_algorithm, int, 255);
-
-static const char* const dnssec_digest_table[_DNSSEC_DIGEST_MAX_DEFINED] = {
- /* Names as listed on https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml */
- [DNSSEC_DIGEST_SHA1] = "SHA-1",
- [DNSSEC_DIGEST_SHA256] = "SHA-256",
- [DNSSEC_DIGEST_GOST_R_34_11_94] = "GOST_R_34.11-94",
- [DNSSEC_DIGEST_SHA384] = "SHA-384",
-};
-DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_digest, int, 255);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 14:23:50 +0000