b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen#include "alloc-util.h"

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen#include "dns-domain.h"

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen#include "dns-type.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "resolved-dns-question.h"

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom GundersenDnsQuestion *dns_question_new(unsigned n) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen DnsQuestion *q;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen assert(n > 0);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering q = malloc0(offsetof(DnsQuestion, keys) + sizeof(DnsResourceKey*) * n);

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering if (!q)

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen return NULL;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen q->n_ref = 1;

99634696183dfabae20104e58157c69029a11594Tom Gundersen q->n_allocated = n;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen return q;

99634696183dfabae20104e58157c69029a11594Tom Gundersen}

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom GundersenDnsQuestion *dns_question_ref(DnsQuestion *q) {

99634696183dfabae20104e58157c69029a11594Tom Gundersen if (!q)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen return NULL;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen assert(q->n_ref > 0);

99634696183dfabae20104e58157c69029a11594Tom Gundersen q->n_ref++;

99634696183dfabae20104e58157c69029a11594Tom Gundersen return q;

99634696183dfabae20104e58157c69029a11594Tom Gundersen}

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom GundersenDnsQuestion *dns_question_unref(DnsQuestion *q) {

99634696183dfabae20104e58157c69029a11594Tom Gundersen if (!q)

99634696183dfabae20104e58157c69029a11594Tom Gundersen return NULL;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen assert(q->n_ref > 0);

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen if (q->n_ref == 1) {

99634696183dfabae20104e58157c69029a11594Tom Gundersen unsigned i;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen for (i = 0; i < q->n_keys; i++)

99634696183dfabae20104e58157c69029a11594Tom Gundersen dns_resource_key_unref(q->keys[i]);

99634696183dfabae20104e58157c69029a11594Tom Gundersen free(q);

99634696183dfabae20104e58157c69029a11594Tom Gundersen } else

99634696183dfabae20104e58157c69029a11594Tom Gundersen q->n_ref--;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen return NULL;

99634696183dfabae20104e58157c69029a11594Tom Gundersen}

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersenint dns_question_add(DnsQuestion *q, DnsResourceKey *key) {

99634696183dfabae20104e58157c69029a11594Tom Gundersen unsigned i;

99634696183dfabae20104e58157c69029a11594Tom Gundersen int r;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen assert(key);

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen if (!q)

99634696183dfabae20104e58157c69029a11594Tom Gundersen return -ENOSPC;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen for (i = 0; i < q->n_keys; i++) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen r = dns_resource_key_equal(q->keys[i], key);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (r < 0)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return r;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (r > 0)

99634696183dfabae20104e58157c69029a11594Tom Gundersen return 0;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen if (q->n_keys >= q->n_allocated)

99634696183dfabae20104e58157c69029a11594Tom Gundersen return -ENOSPC;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen q->keys[q->n_keys++] = dns_resource_key_ref(key);

99634696183dfabae20104e58157c69029a11594Tom Gundersen return 0;

99634696183dfabae20104e58157c69029a11594Tom Gundersen}

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersenint dns_question_matches_rr(DnsQuestion *q, DnsResourceRecord *rr, const char *search_domain) {

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen unsigned i;

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen int r;

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen

756775814cf69471f74ce853745bba69f2ba94efThomas Hindoe Paaboel Andersen assert(rr);

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen if (!q)

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen return 0;

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen for (i = 0; i < q->n_keys; i++) {

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering r = dns_resource_key_match_rr(q->keys[i], rr, search_domain);

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering if (r != 0)

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering return r;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering }

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering return 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen}

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersenint dns_question_matches_cname(DnsQuestion *q, DnsResourceRecord *rr, const char *search_domain) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen unsigned i;

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen int r;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen assert(rr);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!q)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return 0;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen for (i = 0; i < q->n_keys; i++) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen r = dns_resource_key_match_cname_or_dname(q->keys[i], rr->key, search_domain);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (r != 0)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return r;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen }

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return 0;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen}

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenint dns_question_is_valid_for_query(DnsQuestion *q) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen const char *name;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen unsigned i;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int r;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!q)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return 0;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (q->n_keys <= 0)

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt return 0;

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt if (q->n_keys > 65535)

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt return 0;

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen name = DNS_RESOURCE_KEY_NAME(q->keys[0]);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!name)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return 0;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen /* Check that all keys in this question bear the same name */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen for (i = 0; i < q->n_keys; i++) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen assert(q->keys[i]);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (i > 0) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering r = dns_name_equal(DNS_RESOURCE_KEY_NAME(q->keys[i]), name);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (r <= 0)

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering return r;

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering }

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering if (!dns_type_is_valid_query(q->keys[i]->type))

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering return 0;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering }

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering return 1;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen}

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenint dns_question_contains(DnsQuestion *a, const DnsResourceKey *k) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering unsigned j;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int r;

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering assert(k);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering if (!a)

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering return 0;

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering for (j = 0; j < a->n_keys; j++) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering r = dns_resource_key_equal(a->keys[j], k);

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering if (r != 0)

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering return r;

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering }

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen}

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersenint dns_question_is_equal(DnsQuestion *a, DnsQuestion *b) {

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen unsigned j;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen int r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (!a)

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen return !b || b->n_keys == 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (!b)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return a->n_keys == 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen /* Checks if all keys in a are also contained b, and vice versa */

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering for (j = 0; j < a->n_keys; j++) {

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen r = dns_question_contains(b, a->keys[j]);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (r <= 0)

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen return r;

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen }

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt for (j = 0; j < b->n_keys; j++) {

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering r = dns_question_contains(a, b->keys[j]);

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering if (r <= 0)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen }

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return 1;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen}

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersenint dns_question_cname_redirect(DnsQuestion *q, const DnsResourceRecord *cname, DnsQuestion **ret) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen _cleanup_(dns_question_unrefp) DnsQuestion *n = NULL;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen bool same = true;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen unsigned i;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen int r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(cname);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(ret);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(IN_SET(cname->key->type, DNS_TYPE_CNAME, DNS_TYPE_DNAME));

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (!q) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen n = dns_question_new(0);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (!n)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return -ENOMEM;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen *ret = n;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen n = 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen }

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen for (i = 0; i < q->n_keys; i++) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen _cleanup_free_ char *destination = NULL;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen const char *d;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (cname->key->type == DNS_TYPE_CNAME)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen d = cname->cname.name;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen else {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen r = dns_name_change_suffix(DNS_RESOURCE_KEY_NAME(q->keys[i]), DNS_RESOURCE_KEY_NAME(cname->key), cname->dname.name, &destination);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (r < 0)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (r == 0)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen continue;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen d = destination;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen r = dns_name_equal(DNS_RESOURCE_KEY_NAME(q->keys[i]), d);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (r < 0)

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen return r;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (r == 0) {

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen same = false;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen break;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (same) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen /* Shortcut, the names are already right */

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen *ret = dns_question_ref(q);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen return 0;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen n = dns_question_new(q->n_keys);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!n)

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen /* Create a new question, and patch in the new name */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen for (i = 0; i < q->n_keys; i++) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_resource_key_unrefp) DnsResourceKey *k = NULL;

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen k = dns_resource_key_new_redirect(q->keys[i], cname);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!k)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(n, k);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen }

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen *ret = n;

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering n = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return 1;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenconst char *dns_question_first_name(DnsQuestion *q) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!q)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (q->n_keys < 1)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return DNS_RESOURCE_KEY_NAME(q->keys[0]);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenint dns_question_new_address(DnsQuestion **ret, int family, const char *name) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_question_unrefp) DnsQuestion *q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen int r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(ret);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(name);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC))

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -EAFNOSUPPORT;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = dns_question_new(family == AF_UNSPEC ? 2 : 1);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!q)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (family != AF_INET6) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_A, name);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!key)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(q, key);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (family != AF_INET) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_AAAA, name);

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering if (!key)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(q, key);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen *ret = q;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return 0;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenint dns_question_new_reverse(DnsQuestion **ret, int family, const union in_addr_union *a) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_question_unrefp) DnsQuestion *q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_free_ char *reverse = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen int r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(ret);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(a);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC))

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -EAFNOSUPPORT;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_name_reverse(family, a, &reverse);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = dns_question_new(1);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!q)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, reverse);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!key)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen reverse = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(q, key);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen *ret = q;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return 0;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenint dns_question_new_service(DnsQuestion **ret, const char *name, bool with_txt) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_(dns_question_unrefp) DnsQuestion *q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen int r;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(ret);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(name);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = dns_question_new(1 + with_txt);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!q)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_SRV, name);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!key)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(q, key);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return r;

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (with_txt) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen dns_resource_key_unref(key);

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen key = dns_resource_key_new(DNS_CLASS_IN, DNS_TYPE_TXT, name);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (!key)

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen return -ENOMEM;

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = dns_question_add(q, key);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (r < 0)

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen return r;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen *ret = q;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen q = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen return 0;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen}

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen