void
mock_server_hangs_up (request_t *request)
{
if (mock_server_get_verbose (request->server)) {
printf ("%5.2f %hu <- %hu \thang up!\n",
mock_server_get_uptime_sec (request->server),
request->client_port,
request_get_server_port (request));
fflush (stdout);
}
mongoc_stream_close (request->client);
}
static bool
auto_ismaster (request_t *request,
void *data)
{
const char *response_json = (const char *) data;
char *quotes_replaced;
bson_t response;
bson_error_t error;
if (!request->is_command || strcasecmp (request->command_name, "ismaster")) {
return false;
}
quotes_replaced = single_quotes_to_double (response_json);
if (!bson_init_from_json (&response, quotes_replaced, -1, &error)) {
fprintf (stderr, "%s\n", error.message);
fflush (stderr);
abort ();
}
if (mock_server_get_rand_delay (request->server)) {
_mongoc_usleep ((int64_t) (rand () % 10) * 1000);
}
if (mock_server_get_verbose (request->server)) {
printf ("%5.2f %hu <- %hu \t%s\n",
mock_server_get_uptime_sec (request->server),
request->client_port,
mock_server_get_port (request->server),
quotes_replaced);
fflush (stdout);
}
mock_server_reply_simple (request->server,
request->client,
&request->request_rpc,
MONGOC_REPLY_NONE,
&response,
0);
bson_destroy (&response);
bson_free (quotes_replaced);
request_destroy (request);
return true;
}
void
mock_server_replies (request_t *request,
uint32_t flags,
int64_t cursor_id,
int32_t starting_from,
int32_t number_returned,
const char *docs_json)
{
char *quotes_replaced = single_quotes_to_double (docs_json);
bson_t doc;
bson_error_t error;
bool r;
assert (request);
r = bson_init_from_json (&doc, quotes_replaced, -1, &error);
if (!r) {
MONGOC_WARNING ("%s", error.message);
return;
}
if (mock_server_get_verbose (request->server)) {
printf ("%5.2f %hu <- %hu \t%s\n",
mock_server_get_uptime_sec (request->server),
request->client_port,
mock_server_get_port (request->server),
quotes_replaced);
fflush (stdout);
}
mock_server_reply_simple (request->server,
request->client,
&request->request_rpc,
MONGOC_REPLY_NONE,
&doc,
cursor_id);
bson_destroy (&doc);
bson_free (quotes_replaced);
}
void
mock_server_resets (request_t *request)
{
struct linger no_linger;
no_linger.l_onoff = 1;
no_linger.l_linger = 0;
if (mock_server_get_verbose (request->server)) {
printf ("%5.2f %hu <- %hu \treset!\n",
mock_server_get_uptime_sec (request->server),
request->client_port,
request_get_server_port (request));
fflush (stdout);
}
/* send RST packet to client */
mongoc_stream_setsockopt (request->client,
SOL_SOCKET,
SO_LINGER,
&no_linger,
sizeof no_linger);
mongoc_stream_close (request->client);
}
uint16_t
mock_server_run (mock_server_t *server)
{
mongoc_socket_t *ssock;
struct sockaddr_in bind_addr;
int optval;
uint16_t bound_port;
MONGOC_INFO ("Starting mock server on port %d.", server->port);
ssock = mongoc_socket_new (AF_INET, SOCK_STREAM, 0);
if (!ssock) {
perror ("Failed to create socket.");
return 0;
}
optval = 1;
mongoc_socket_setsockopt (ssock, SOL_SOCKET, SO_REUSEADDR, &optval,
sizeof optval);
memset (&bind_addr, 0, sizeof bind_addr);
bind_addr.sin_family = AF_INET;
bind_addr.sin_addr.s_addr = htonl (INADDR_ANY);
/* bind to unused port */
bind_addr.sin_port = htons (0);
if (-1 == mongoc_socket_bind (ssock,
(struct sockaddr *) &bind_addr,
sizeof bind_addr)) {
perror ("Failed to bind socket");
return 0;
}
if (-1 == mongoc_socket_listen (ssock, 10)) {
perror ("Failed to put socket into listen mode");
return 0;
}
bound_port = get_port (ssock);
if (!bound_port) {
perror ("Failed to get bound port number");
return 0;
}
mongoc_mutex_lock (&server->mutex);
server->sock = ssock;
server->port = bound_port;
/* TODO: configurable timeouts, perhaps from env */
server->uri_str = bson_strdup_printf (
"mongodb://127.0.0.1:%hu/?serverselectiontimeoutms=10000&"
"sockettimeoutms=10000",
bound_port);
server->uri = mongoc_uri_new (server->uri_str);
mongoc_thread_create (&server->main_thread, main_thread, (void *) server);
/* wait for main thread to start */
mongoc_cond_wait (&server->cond, &server->mutex);
mongoc_mutex_unlock (&server->mutex);
if (mock_server_get_verbose (server)) {
fprintf (stderr, "listening on port %hu\n", bound_port);
fflush (stdout);
}
return (uint16_t) bound_port;
}
void
mock_server_reply_multi (request_t *request,
mongoc_reply_flags_t flags,
const bson_t *docs,
int n_docs,
int64_t cursor_id)
{
const mongoc_rpc_t *request_rpc;
mock_server_t *server;
mongoc_stream_t *client;
char *doc_json;
bson_string_t *docs_json;
mongoc_iovec_t *iov;
mongoc_array_t ar;
mongoc_rpc_t r = {{ 0 }};
size_t expected = 0;
ssize_t n_written;
int iovcnt;
int i;
uint8_t *buf;
uint8_t *ptr;
size_t len;
BSON_ASSERT (request);
BSON_ASSERT (docs);
request_rpc = &request->request_rpc;
server = request->server;
client = request->client;
docs_json = bson_string_new ("");
for (i = 0; i < n_docs; i++) {
doc_json = bson_as_json (&docs[i], NULL);
bson_string_append (docs_json, doc_json);
bson_free (doc_json);
if (i < n_docs - 1) {
bson_string_append (docs_json, ", ");
}
}
if (mock_server_get_verbose (request->server)) {
printf ("%5.2f %hu <- %hu \t%s\n",
mock_server_get_uptime_sec (request->server),
request->client_port,
mock_server_get_port (request->server),
docs_json->str);
fflush (stdout);
}
len = 0;
for (i = 0; i < n_docs; i++) {
len += docs[i].len;
}
ptr = buf = bson_malloc (len);
for (i = 0; i < n_docs; i++) {
memcpy (ptr, bson_get_data (&docs[i]), docs[i].len);
ptr += docs[i].len;
}
_mongoc_array_init (&ar, sizeof (mongoc_iovec_t));
if (!(request->opcode == MONGOC_OPCODE_QUERY &&
request_rpc->query.flags & MONGOC_QUERY_EXHAUST)) {
server->last_response_id++;
}
mongoc_mutex_lock (&server->mutex);
r.reply.request_id = server->last_response_id;
mongoc_mutex_unlock (&server->mutex);
r.reply.msg_len = 0;
r.reply.response_to = request_rpc->header.request_id;
r.reply.opcode = MONGOC_OPCODE_REPLY;
r.reply.flags = flags;
r.reply.cursor_id = cursor_id;
r.reply.start_from = 0;
r.reply.n_returned = 1;
r.reply.documents = buf;
r.reply.documents_len = (uint32_t)len;
_mongoc_rpc_gather (&r, &ar);
_mongoc_rpc_swab_to_le (&r);
iov = (mongoc_iovec_t *)ar.data;
iovcnt = (int) ar.len;
for (i = 0; i < iovcnt; i++) {
expected += iov[i].iov_len;
}
n_written = mongoc_stream_writev (client, iov, (size_t) iovcnt, -1);
assert (n_written == expected);
bson_string_free (docs_json, true);
_mongoc_array_destroy (&ar);
bson_free (buf);
}
/* TODO: factor */
static void *
worker_thread (void *data)
{
worker_closure_t *closure = (worker_closure_t *) data;
mock_server_t *server = closure->server;
mongoc_stream_t *client_stream = closure->client_stream;
mongoc_buffer_t buffer;
mongoc_rpc_t *rpc = NULL;
bool handled;
bson_error_t error;
int32_t msg_len;
bool stopped;
sync_queue_t *q;
request_t *request;
mongoc_array_t autoresponders;
ssize_t i;
autoresponder_handle_t handle;
#ifdef MONGOC_ENABLE_SSL
bool ssl;
#endif
ENTRY;
BSON_ASSERT(closure);
#ifdef MONGOC_ENABLE_SSL
mongoc_mutex_lock (&server->mutex);
ssl = server->ssl;
mongoc_mutex_unlock (&server->mutex);
if (ssl) {
if (!mongoc_stream_tls_handshake_block (client_stream, "localhost", TIMEOUT, &error)) {
MONGOC_ERROR("Blocking TLS handshake failed");
mongoc_stream_close (client_stream);
mongoc_stream_destroy (client_stream);
RETURN (NULL);
}
}
#endif
_mongoc_buffer_init (&buffer, NULL, 0, NULL, NULL);
_mongoc_array_init (&autoresponders, sizeof (autoresponder_handle_t));
again:
bson_free (rpc);
rpc = NULL;
handled = false;
mongoc_mutex_lock (&server->mutex);
stopped = server->stopped;
mongoc_mutex_unlock (&server->mutex);
if (stopped) {
GOTO(failure);
}
if (_mongoc_buffer_fill (&buffer, client_stream, 4, TIMEOUT, &error) == -1) {
GOTO (again);
}
assert (buffer.len >= 4);
memcpy (&msg_len, buffer.data + buffer.off, 4);
msg_len = BSON_UINT32_FROM_LE (msg_len);
if (msg_len < 16) {
MONGOC_WARNING ("No data");
GOTO (failure);
}
if (_mongoc_buffer_fill (&buffer, client_stream, (size_t) msg_len, -1,
&error) == -1) {
MONGOC_WARNING ("%s():%d: %s", BSON_FUNC, __LINE__, error.message);
GOTO (failure);
}
assert (buffer.len >= (unsigned) msg_len);
/* copies message from buffer */
request = request_new (&buffer, msg_len, server, client_stream,
closure->port);
mongoc_mutex_lock (&server->mutex);
_mongoc_array_copy (&autoresponders, &server->autoresponders);
mongoc_mutex_unlock (&server->mutex);
if (mock_server_get_verbose (server)) {
printf ("%5.2f %hu -> %hu %s\n",
mock_server_get_uptime_sec (server),
closure->port, server->port, request->as_str);
fflush (stdout);
}
/* run responders most-recently-added-first */
for (i = server->autoresponders.len - 1; i >= 0; i--) {
handle = _mongoc_array_index (&server->autoresponders,
autoresponder_handle_t,
i);
if (handle.responder (request, handle.data)) {
handled = true;
/* responder should destroy the request */
request = NULL;
break;
}
}
if (!handled) {
q = mock_server_get_queue (server);
q_put (q, (void *) request);
request = NULL;
}
memmove (buffer.data, buffer.data + buffer.off + msg_len,
buffer.len - msg_len);
buffer.off = 0;
buffer.len -= msg_len;
GOTO (again);
failure:
_mongoc_array_destroy (&autoresponders);
_mongoc_buffer_destroy (&buffer);
mongoc_stream_close (client_stream);
mongoc_stream_destroy (client_stream);
bson_free (rpc);
bson_free (closure);
_mongoc_buffer_destroy (&buffer);
RETURN (NULL);
}
static void *
main_thread (void *data)
{
mock_server_t *server = (mock_server_t *)data;
mongoc_socket_t *client_sock;
bool stopped;
uint16_t port;
mongoc_stream_t *client_stream;
worker_closure_t *closure;
mongoc_thread_t thread;
mongoc_array_t worker_threads;
size_t i;
mongoc_mutex_lock (&server->mutex);
server->running = true;
mongoc_cond_signal (&server->cond);
mongoc_mutex_unlock (&server->mutex);
for (; ;) {
client_sock = mongoc_socket_accept_ex (
server->sock,
bson_get_monotonic_time () + TIMEOUT,
&port);
mongoc_mutex_lock (&server->mutex);
stopped = server->stopped;
mongoc_mutex_unlock (&server->mutex);
if (stopped) {
break;
}
if (client_sock) {
if (mock_server_get_verbose (server)) {
printf ("%5.2f %hu -> server port %hu (connected)\n",
mock_server_get_uptime_sec (server),
port, server->port);
fflush (stdout);
}
client_stream = mongoc_stream_socket_new (client_sock);
#ifdef MONGOC_ENABLE_SSL
mongoc_mutex_lock (&server->mutex);
if (server->ssl) {
server->ssl_opts.weak_cert_validation = 1;
client_stream = mongoc_stream_tls_new (client_stream,
&server->ssl_opts, 0);
if (!client_stream) {
mongoc_mutex_unlock (&server->mutex);
perror ("Failed to attach tls stream");
break;
}
}
mongoc_mutex_unlock (&server->mutex);
#endif
closure = (worker_closure_t *)bson_malloc (sizeof *closure);
closure->server = server;
closure->client_stream = client_stream;
closure->port = port;
mongoc_thread_create (&thread, worker_thread, closure);
mongoc_mutex_lock (&server->mutex);
_mongoc_array_append_val (&server->worker_threads, thread);
mongoc_mutex_unlock (&server->mutex);
}
}
/* copy list of worker threads and join them all */
_mongoc_array_init (&worker_threads, sizeof (mongoc_thread_t));
mongoc_mutex_lock (&server->mutex);
_mongoc_array_copy (&worker_threads, &server->worker_threads);
mongoc_mutex_unlock (&server->mutex);
for (i = 0; i < worker_threads.len; i++) {
mongoc_thread_join (
_mongoc_array_index (&worker_threads, mongoc_thread_t, i));
}
_mongoc_array_destroy (&worker_threads);
mongoc_mutex_lock (&server->mutex);
server->running = false;
mongoc_mutex_unlock (&server->mutex);
return NULL;
}
