resolved: Test for DnsStream (plain TCP DNS and DoT)

Tests DnsStream event handling, both for plain TCP DNS and DNS over TLS.

The DoT test requires the "openssl s_server" command line tool to mock a simple
TLS server. Thus the test's TLS part is skipped if openssl it not available.
The test works for both DNS_OVER_TLS_USE_GNUTLS and DNS_OVER_TLS_USE_OPENSSL.

The DoT case fails due to a bug, which is fixed on the next commit.

(cherry picked from commit 726bcd81b965afa3c9cc71f6c7a81b1eefb4bcf5)

4 files changed, 436 insertions, 1 deletions

diff --git a/src/resolve/meson.build b/src/resolve/meson.build
index 770ed77cf5..b78502c466 100644
--- a/src/resolve/meson.build
+++ b/src/resolve/meson.build
@@ -70,7 +70,6 @@ systemd_resolved_sources = files(
         'resolved-socket-graveyard.h',
         'resolved-varlink.c',
         'resolved-varlink.h',
-        'resolved.c',
 )
 
 resolvectl_sources = files(
@@ -202,6 +201,14 @@ tests += [
          [lib_openssl_or_gcrypt,
           libm]],
 
+        [['src/resolve/test-resolved-stream.c']
+         + basic_dns_sources + systemd_resolved_sources,
+         [libshared],
+         [lib_openssl_or_gcrypt,
+          libm]
+         + systemd_resolved_dependencies,
+         resolve_includes],
+
         [['src/resolve/test-dnssec.c'],
          [libsystemd_resolve_core,
           libshared],
@@ -224,3 +231,5 @@ fuzzers += [
          [lib_openssl_or_gcrypt,
           libm]],
 ]
+
+systemd_resolved_sources += files('resolved.c')
diff --git a/src/resolve/test-resolved-stream.c b/src/resolve/test-resolved-stream.c
new file mode 100644
index 0000000000..fd7ade19d1
--- /dev/null
+++ b/src/resolve/test-resolved-stream.c
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/prctl.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "fd-util.h"
+#include "log.h"
+#include "process-util.h"
+#include "resolved-dns-packet.h"
+#include "resolved-dns-question.h"
+#include "resolved-dns-rr.h"
+#if ENABLE_DNS_OVER_TLS
+#include "resolved-dnstls.h"
+#endif
+#include "resolved-dns-server.h"
+#include "resolved-dns-stream.h"
+#include "resolved-manager.h"
+#include "sd-event.h"
+#include "sparse-endian.h"
+#include "tests.h"
+
+static struct sockaddr_in SERVER_ADDRESS;
+
+/* Bytes of the questions & answers used in the test, including TCP DNS 2-byte length prefix */
+static const uint8_t QUESTION_A[] =  {
+        0x00, 0x1D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 'e',
+        'x' , 'a' , 'm' , 'p' , 'l' , 'e' , 0x03, 'c' , 'o' , 'm' , 0x00, 0x00, 0x01, 0x00, 0x01
+};
+static const uint8_t QUESTION_AAAA[] =  {
+        0x00, 0x1D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 'e',
+        'x' , 'a' , 'm' , 'p' , 'l' , 'e' , 0x03, 'c' , 'o' , 'm' , 0x00, 0x00, 0x1C, 0x00, 0x01
+};
+static const uint8_t ANSWER_A[] =  {
+        0x00, 0x2D, 0x00, 0x00, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 'e',
+        'x' , 'a' , 'm' , 'p' , 'l' , 'e' , 0x03, 'c' , 'o' , 'm' , 0x00, 0x00, 0x01, 0x00, 0x01, 0xC0,
+        0x0C, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x52, 0x8D, 0x00, 0x04, 0x5D, 0xB8, 0xD8, 0x22,
+};
+static const uint8_t ANSWER_AAAA[] =  {
+        0x00, 0x39, 0x00, 0x00, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 'e',
+        'x' , 'a' , 'm' , 'p' , 'l' , 'e' , 0x03, 'c' , 'o' , 'm' , 0x00, 0x00, 0x1C, 0x00, 0x01, 0xC0,
+        0x0C, 0x00, 0x1C, 0x00, 0x01, 0x00, 0x00, 0x54, 0x4B, 0x00, 0x10, 0x26, 0x06, 0x28, 0x00, 0x02,
+        0x20, 0x00, 0x01, 0x02, 0x48, 0x18, 0x93, 0x25, 0xC8, 0x19, 0x46,
+};
+
+/**
+ * A mock TCP DNS server that asserts certain questions are received
+ * and replies with the same answer every time.
+ */
+static void receive_and_check_question(int fd, const uint8_t *expected_question,
+                                       size_t question_size) {
+        uint8_t *actual_question;
+        size_t n_read = 0;
+
+        actual_question = newa(uint8_t, question_size);
+        while (n_read < question_size) {
+                ssize_t r = read(fd, actual_question + n_read, question_size - n_read);
+                assert_se(r >= 0);
+                n_read += (size_t)r;
+        }
+        assert_se(n_read == question_size);
+
+        assert_se(memcmp(expected_question, actual_question, question_size) == 0);
+}
+
+static void send_answer(int fd, const uint8_t *answer, size_t answer_size) {
+        assert_se(write(fd, answer, answer_size) == (ssize_t)answer_size);
+}
+
+/* Sends two answers together in a single write operation,
+ * so they hopefully end up in a single TCP packet / TLS record */
+static void send_answers_together(int fd,
+                                  const uint8_t *answer1, size_t answer1_size,
+                                  const uint8_t *answer2, size_t answer2_size) {
+        uint8_t *answer;
+        size_t answer_size = answer1_size + answer2_size;
+
+        answer = newa(uint8_t, answer_size);
+        memcpy(answer, answer1, answer1_size);
+        memcpy(answer + answer1_size, answer2, answer2_size);
+        assert_se(write(fd, answer, answer_size) == (ssize_t)answer_size);
+}
+
+static void server_handle(int fd) {
+        receive_and_check_question(fd, QUESTION_A, sizeof(QUESTION_A));
+        send_answer(fd, ANSWER_A, sizeof(ANSWER_A));
+
+        receive_and_check_question(fd, QUESTION_AAAA, sizeof(QUESTION_AAAA));
+        send_answer(fd, ANSWER_AAAA, sizeof(ANSWER_AAAA));
+
+        receive_and_check_question(fd, QUESTION_A, sizeof(QUESTION_A));
+        receive_and_check_question(fd, QUESTION_AAAA, sizeof(QUESTION_AAAA));
+        send_answers_together(fd, ANSWER_A, sizeof(ANSWER_A),
+                                  ANSWER_AAAA, sizeof(ANSWER_AAAA));
+}
+
+static void *tcp_dns_server(void *p) {
+        _cleanup_close_ int bindfd = -1, acceptfd = -1;
+
+        assert_se((bindfd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0)) >= 0);
+        assert_se(setsockopt(bindfd, SOL_SOCKET, SO_REUSEADDR, &(int){1}, sizeof(int)) >= 0);
+        assert_se(bind(bindfd, &SERVER_ADDRESS, sizeof(SERVER_ADDRESS)) >= 0);
+        assert_se(listen(bindfd, 1) >= 0);
+        assert_se((acceptfd = accept(bindfd, NULL, NULL)) >= 0);
+        server_handle(acceptfd);
+        return NULL;
+}
+
+#if ENABLE_DNS_OVER_TLS
+/*
+ * Spawns a DNS TLS server using the command line "openssl s_server" tool.
+ */
+static void *tls_dns_server(void *p) {
+        pid_t openssl_pid;
+        int r;
+        _cleanup_close_ int fd_server = -1, fd_tls = -1;
+        _cleanup_free_ char *cert_path = NULL, *key_path = NULL;
+        _cleanup_free_ char *ip_str = NULL, *bind_str = NULL;
+
+        assert_se(get_testdata_dir("test-resolve/selfsigned.cert", &cert_path) >= 0);
+        assert_se(get_testdata_dir("test-resolve/selfsigned.key", &key_path) >= 0);
+
+        assert_se(in_addr_to_string(SERVER_ADDRESS.sin_family,
+                                    &(union in_addr_union){.in = SERVER_ADDRESS.sin_addr},
+                                    &ip_str) >= 0);
+        asprintf(&bind_str, "%s:%d", ip_str, be16toh(SERVER_ADDRESS.sin_port));
+
+        /* We will hook one of the socketpair ends to OpenSSL's TLS server
+         * stdin/stdout, so we will be able to read and write plaintext
+         * from the other end's file descriptor like an usual TCP server */
+        {
+                int fd[2];
+                assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, fd) >= 0);
+                fd_server = fd[0];
+                fd_tls = fd[1];
+        }
+
+        r = safe_fork_full("(test-resolved-stream-tls-openssl)", (int[]) { fd_server, fd_tls }, 2,
+                FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_LOG|FORK_REOPEN_LOG, &openssl_pid);
+        assert(r >= 0);
+        if (r == 0) {
+                /* Child */
+                assert_se(dup2(fd_tls, STDIN_FILENO) >= 0);
+                assert_se(dup2(fd_tls, STDOUT_FILENO) >= 0);
+                close(TAKE_FD(fd_server));
+                close(TAKE_FD(fd_tls));
+
+                execlp("openssl", "openssl", "s_server", "-accept", bind_str,
+                       "-key", key_path, "-cert", cert_path,
+                       "-quiet", "-naccept", "1", NULL);
+                log_error("exec failed, is something wrong with the 'openssl' command?");
+                _exit(EXIT_FAILURE);
+        } else {
+                pthread_mutex_t *server_lock = (pthread_mutex_t *)p;
+
+                server_handle(fd_server);
+
+                /* Once the test is done kill the TLS server to release the port */
+                assert_se(pthread_mutex_lock(server_lock) == 0);
+                assert_se(kill(openssl_pid, SIGTERM) >= 0);
+                assert_se(waitpid(openssl_pid, NULL, 0) >= 0);
+                assert_se(pthread_mutex_unlock(server_lock) == 0);
+        }
+
+        return NULL;
+}
+#endif
+
+static const char *TEST_DOMAIN = "example.com";
+static const uint64_t EVENT_TIMEOUT_USEC = 5 * 1000 * 1000;
+
+static void send_simple_question(DnsStream *stream, uint16_t type) {
+        _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
+        _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
+        _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
+
+        assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX) >= 0);
+        assert_se(question = dns_question_new(1));
+        assert_se(key = dns_resource_key_new(DNS_CLASS_IN, type, TEST_DOMAIN));
+        assert_se(dns_question_add(question, key, 0) >= 0);
+        assert_se(dns_packet_append_question(p, question) >= 0);
+        DNS_PACKET_HEADER(p)->qdcount = htobe16(dns_question_size(question));
+        assert_se(dns_stream_write_packet(stream, p) >= 0);
+}
+
+static const size_t MAX_RECEIVED_PACKETS = 2;
+static DnsPacket *received_packets[2] = {};
+static size_t n_received_packets = 0;
+
+static int on_stream_packet(DnsStream *stream) {
+        assert_se(n_received_packets < MAX_RECEIVED_PACKETS);
+        assert_se(received_packets[n_received_packets++] = dns_stream_take_read_packet(stream));
+        return 0;
+}
+
+static void test_dns_stream(bool tls) {
+        Manager manager = {};
+         _cleanup_(dns_stream_unrefp) DnsStream *stream = NULL;
+        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
+        _cleanup_close_ int clientfd = -1;
+        int r;
+
+        void *(*server_entrypoint)(void *);
+        pthread_t server_thread;
+        pthread_mutex_t server_lock;
+
+        log_info("test-resolved-stream: Started %s test", tls ? "TLS" : "TCP");
+
+#if ENABLE_DNS_OVER_TLS
+        if (tls) {
+                /* For TLS mode, use DNS_OVER_TLS_OPPORTUNISTIC instead of
+                 * DNS_OVER_TLS_YES, just to make certificate validation more
+                 * lenient, allowing us to use self-signed certificates.
+                 * We never downgrade, everything we test always goes over TLS */
+                manager.dns_over_tls_mode = DNS_OVER_TLS_OPPORTUNISTIC;
+        }
+#endif
+
+        assert_se(sd_event_new(&event) >= 0);
+        manager.event = event;
+
+        /* Set up a mock DNS (over TCP or TLS) server */
+        server_entrypoint = tcp_dns_server;
+#if ENABLE_DNS_OVER_TLS
+        if (tls)
+                server_entrypoint = tls_dns_server;
+#endif
+        assert_se(pthread_mutex_init(&server_lock, NULL) == 0);
+        assert_se(pthread_mutex_lock(&server_lock) == 0);
+        assert_se(pthread_create(&server_thread, NULL, server_entrypoint, &server_lock) == 0);
+
+        /* Create a socket client and connect to the TCP or TLS server
+         * The server may not be up immediately, so try to connect a few times before failing */
+        assert_se((clientfd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0)) >= 0);
+
+        for (int i = 0; i < 100; i++) {
+                r = connect(clientfd, &SERVER_ADDRESS, sizeof(SERVER_ADDRESS));
+                if (r >= 0)
+                        break;
+                usleep(EVENT_TIMEOUT_USEC / 100);
+        }
+        assert_se(r >= 0);
+
+        /* systemd-resolved uses (and requires) the socket to be in nonblocking mode */
+        assert_se(fcntl(clientfd, F_SETFL, O_NONBLOCK) >= 0);
+
+        /* Initialize DNS stream */
+        assert_se(dns_stream_new(&manager, &stream, DNS_STREAM_LOOKUP, DNS_PROTOCOL_DNS,
+                                 TAKE_FD(clientfd), NULL, DNS_STREAM_DEFAULT_TIMEOUT_USEC) >= 0);
+        stream->on_packet = on_stream_packet;
+#if ENABLE_DNS_OVER_TLS
+        if (tls) {
+                DnsServer server = {
+                        .manager = &manager,
+                        .family = SERVER_ADDRESS.sin_family,
+                        .address.in = SERVER_ADDRESS.sin_addr
+                };
+
+                assert_se(dnstls_manager_init(&manager) >= 0);
+                assert_se(dnstls_stream_connect_tls(stream, &server) >= 0);
+        }
+#endif
+
+        /* Test: Question of type A and associated answer */
+        log_info("test-resolved-stream: A record");
+        send_simple_question(stream, DNS_TYPE_A);
+        while (n_received_packets != 1)
+                assert_se(sd_event_run(event, EVENT_TIMEOUT_USEC) >= 1);
+        assert_se(DNS_PACKET_DATA(received_packets[0]));
+        assert_se(memcmp(DNS_PACKET_DATA(received_packets[0]),
+                         ANSWER_A + 2, sizeof(ANSWER_A) - 2) == 0);
+        dns_packet_unref(TAKE_PTR(received_packets[0]));
+        n_received_packets = 0;
+
+        /* Test: Question of type AAAA and associated answer */
+        log_info("test-resolved-stream: AAAA record");
+        send_simple_question(stream, DNS_TYPE_AAAA);
+        while (n_received_packets != 1)
+                assert_se(sd_event_run(event, EVENT_TIMEOUT_USEC) >= 1);
+        assert_se(DNS_PACKET_DATA(received_packets[0]));
+        assert_se(memcmp(DNS_PACKET_DATA(received_packets[0]),
+                         ANSWER_AAAA + 2, sizeof(ANSWER_AAAA) - 2) == 0);
+        dns_packet_unref(TAKE_PTR(received_packets[0]));
+        n_received_packets = 0;
+
+        /* Test: Question of type A and AAAA and associated answers
+         * Both answers are sent back in a single packet or TLS record
+         * (tests the fix of PR #22132: "Fix DoT timeout on multiple answer records") */
+        log_info("test-resolved-stream: A + AAAA record");
+        send_simple_question(stream, DNS_TYPE_A);
+        send_simple_question(stream, DNS_TYPE_AAAA);
+
+        while (n_received_packets != 2)
+                assert_se(sd_event_run(event, EVENT_TIMEOUT_USEC) >= 1);
+        assert_se(DNS_PACKET_DATA(received_packets[0]));
+        assert_se(DNS_PACKET_DATA(received_packets[1]));
+        assert_se(memcmp(DNS_PACKET_DATA(received_packets[0]),
+                         ANSWER_A + 2, sizeof(ANSWER_A) - 2) == 0);
+        assert_se(memcmp(DNS_PACKET_DATA(received_packets[1]),
+                         ANSWER_AAAA + 2, sizeof(ANSWER_AAAA) - 2) == 0);
+        dns_packet_unref(TAKE_PTR(received_packets[0]));
+        dns_packet_unref(TAKE_PTR(received_packets[1]));
+        n_received_packets = 0;
+
+#if ENABLE_DNS_OVER_TLS
+        if (tls)
+                dnstls_manager_free(&manager);
+#endif
+
+        /* Stop the DNS server */
+        assert_se(pthread_mutex_unlock(&server_lock) == 0);
+        assert_se(pthread_join(server_thread, NULL) == 0);
+        assert_se(pthread_mutex_destroy(&server_lock) == 0);
+
+        log_info("test-resolved-stream: Finished %s test", tls ? "TLS" : "TCP");
+}
+
+int main(int argc, char **argv) {
+        SERVER_ADDRESS = (struct sockaddr_in) {
+                .sin_family = AF_INET,
+                .sin_port = htobe16(12345),
+                .sin_addr.s_addr = htobe32(INADDR_LOOPBACK)
+        };
+
+        test_setup_logging(LOG_DEBUG);
+
+        test_dns_stream(false);
+#if ENABLE_DNS_OVER_TLS
+        if (system("openssl version >/dev/null 2>&1") != 0)
+                return log_tests_skipped("Skipping TLS test since the 'openssl' command does not seem to be available");
+        test_dns_stream(true);
+#endif
+
+        return 0;
+}
diff --git a/test/test-resolve/selfsigned.cert b/test/test-resolve/selfsigned.cert
new file mode 100644
index 0000000000..456862c220
--- /dev/null
+++ b/test/test-resolve/selfsigned.cert
@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----
diff --git a/test/test-resolve/selfsigned.key b/test/test-resolve/selfsigned.key
new file mode 100644
index 0000000000..44a09829ef
--- /dev/null
+++ b/test/test-resolve/selfsigned.key
@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQQIBADANBgkqhkiG9w0BAQEFAASCCSswggknAgEAAoICAQC14826tEEHKICM
+/AKOKsyBUDaa6Z6KqS927ifb43LJfxtg8vW+vX9OGtje2qVAoI1UMSu4yttItSd9
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+-----END PRIVATE KEY-----