/**
* Authenticates a connection using MONGODB-CR
*
* Returns:
* 0: when it didn't work - with the error_message set.
* 1: when it worked
*/
int mongo_connection_authenticate_mongodb_cr(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, char *database, char *username, char *password, char *nonce, char **error_message)
{
mcon_str *packet;
char *salted;
int length;
char *hash, *key;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "authenticate: start");
/* Calculate hash=md5(${username}:mongo:${password}) */
length = strlen(username) + 7 + strlen(password) + 1;
salted = malloc(length);
snprintf(salted, length, "%s:mongo:%s", username, password);
hash = mongo_util_md5_hex(salted, length - 1); /* -1 to chop off \0 */
free(salted);
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "authenticate: hash=md5(%s:mongo:%s) = %s", username, password, hash);
/* Calculate key=md5(${nonce}${username}${hash}) */
length = strlen(nonce) + strlen(username) + strlen(hash) + 1;
salted = malloc(length);
snprintf(salted, length, "%s%s%s", nonce, username, hash);
key = mongo_util_md5_hex(salted, length - 1); /* -1 to chop off \0 */
free(salted);
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "authenticate: key=md5(%s%s%s) = %s", nonce, username, hash, key);
/* BC: Do not send MONGODB-CR as mechanism, won't work on older mongod */
packet = bson_create_authenticate_packet(con, NULL, database, username, nonce, key);
free(hash);
free(key);
return mongo_connection_authenticate_cmd(manager, con, options, database, username, packet, error_message);
}
mongo_connection *mongo_connection_create(mongo_con_manager *manager, char *hash, mongo_server_def *server_def, mongo_server_options *options, char **error_message)
{
mongo_connection *tmp;
/* Init struct */
tmp = malloc(sizeof(mongo_connection));
memset(tmp, 0, sizeof(mongo_connection));
tmp->last_reqid = rand();
tmp->connection_type = MONGO_NODE_STANDALONE;
/* Store hash */
tmp->hash = strdup(hash);
/* Connect */
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "connection_create: creating new connection for %s:%d", server_def->host, server_def->port);
tmp->socket = manager->connect(manager, server_def, options, error_message);
if (!tmp->socket) {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "connection_create: error while creating connection for %s:%d: %s", server_def->host, server_def->port, *error_message);
mongo_manager_blacklist_register(manager, tmp);
free(tmp->hash);
free(tmp);
return NULL;
}
/* We call get_server_flags to the maxBsonObjectSize data */
if (!mongo_connection_get_server_flags(manager, tmp, options, error_message)) {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "server_flags: error while getting the server configuration %s:%d: %s", server_def->host, server_def->port, *error_message);
free(tmp);
return NULL;
}
return tmp;
}
static mcon_collection *mongo_filter_candidates_by_replicaset_name(mongo_con_manager *manager, mcon_collection *candidates, mongo_servers *servers)
{
int i;
mcon_collection *filtered;
char *candidate_hash;
char *candidate_replsetname;
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting to servers with same replicaset name");
filtered = mcon_init_collection(sizeof(mongo_connection*));
for (i = 0; i < candidates->count; i++) {
candidate_hash = ((mongo_connection *) candidates->data[i])->hash;
mongo_server_split_hash(candidate_hash, NULL, NULL, (char**) &candidate_replsetname, NULL, NULL, NULL, NULL);
/* Filter out all servers that don't have the replicaset name the same
* as what we have in the server definition struct. But only when the
* repl_set_name in the server definition struct is actually *set*. If
* not, we allow all connections. This make sure we can sort of handle
* [ replicaset => true ], although it would not support one PHP worker
* process connecting to multiple replicasets correctly. */
if (candidate_replsetname) {
if (!servers->repl_set_name || strcmp(candidate_replsetname, servers->repl_set_name) == 0) {
mongo_print_connection_info(manager, (mongo_connection *) candidates->data[i], MLOG_FINE);
mcon_collection_add(filtered, (mongo_connection *) candidates->data[i]);
}
free(candidate_replsetname);
}
}
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting to servers with same replicaset name: done");
return filtered;
}
/**
* Sends a ping command to the server and stores the result.
*
* Returns 1 when it worked, and 0 when an error was encountered.
*/
int mongo_connection_ping(mongo_con_manager *manager, mongo_connection *con, char **error_message)
{
mcon_str *packet;
struct timeval start, end;
char *data_buffer;
gettimeofday(&start, NULL);
if ((con->last_ping + manager->ping_interval) > start.tv_sec) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "is_ping: skipping: last ran at %ld, now: %ld, time left: %ld", con->last_ping, start.tv_sec, con->last_ping + manager->ping_interval - start.tv_sec);
return 2;
}
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "is_ping: pinging %s", con->hash);
packet = bson_create_ping_packet(con);
if (!mongo_connect_send_packet(manager, con, packet, &data_buffer, error_message)) {
return 0;
}
gettimeofday(&end, NULL);
free(data_buffer);
con->last_ping = end.tv_sec;
con->ping_ms = (end.tv_sec - start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000;
if (con->ping_ms < 0) { /* some clocks do weird stuff */
con->ping_ms = 0;
}
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "is_ping: last pinged at %ld; time: %dms", con->last_ping, con->ping_ms);
return 1;
}
/**
* Sends a ping command to the server and stores the result.
*
* Returns 1 when it worked, and 0 when an error was encountered.
*/
int mongo_connection_ping(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, char **error_message)
{
mcon_str *packet;
struct timeval start, end;
char *data_buffer;
/* If we haven't hit the ping_interval yet, then there is no need to do a roundtrip to the server */
if (!mongo_connection_ping_check(manager, con->last_ping, &start)) {
return 1;
}
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "is_ping: pinging %s", con->hash);
packet = bson_create_ping_packet(con);
if (!mongo_connect_send_packet(manager, con, options, packet, &data_buffer, error_message)) {
return 0;
}
gettimeofday(&end, NULL);
free(data_buffer);
con->last_ping = end.tv_sec;
con->ping_ms = (end.tv_sec - start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000;
if (con->ping_ms < 0) { /* some clocks do weird stuff */
con->ping_ms = 0;
}
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "is_ping: last pinged at %ld; time: %dms", con->last_ping, con->ping_ms);
return 1;
}
mongo_connection *mongo_connection_create(mongo_con_manager *manager, char *hash, mongo_server_def *server_def, mongo_server_options *options, char **error_message)
{
mongo_connection *tmp;
/* Init struct */
tmp = malloc(sizeof(mongo_connection));
memset(tmp, 0, sizeof(mongo_connection));
tmp->last_reqid = rand();
tmp->connection_type = MONGO_NODE_STANDALONE;
/* Default server options */
/* MongoDB pre-1.8; Spec says default to 4 MB */
tmp->max_bson_size = 4194304;
/* MongoDB pre-2.4; Spec says default to 2 * the maxBsonSize */
tmp->max_message_size = 2 * tmp->max_bson_size;
/* Store hash */
tmp->hash = strdup(hash);
/* Connect */
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "connection_create: creating new connection for %s:%d", server_def->host, server_def->port);
tmp->socket = manager->connect(manager, server_def, options, error_message);
if (!tmp->socket) {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "connection_create: error while creating connection for %s:%d: %s", server_def->host, server_def->port, *error_message);
mongo_manager_blacklist_register(manager, tmp);
free(tmp->hash);
free(tmp);
return NULL;
}
return tmp;
}
/* API interface to fetch a connection */
mongo_connection *mongo_get_read_write_connection(mongo_con_manager *manager, mongo_servers *servers, int connection_flags, char **error_message)
{
/* In some cases we won't actually have a manager or servers initialized, for example when extending PHP objects without calling the constructor,
* and then var_dump() it or access the properties, for example the "connected" property */
if (!manager || !servers) {
return NULL;
}
/* Which connection we return depends on the type of connection we want */
switch (servers->options.con_type) {
case MONGO_CON_TYPE_STANDALONE:
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_get_read_write_connection: finding a STANDALONE connection");
return mongo_get_connection_multiple(manager, servers, connection_flags, error_message);
case MONGO_CON_TYPE_REPLSET:
mongo_manager_log(
manager, MLOG_CON, MLOG_INFO,
"mongo_get_read_write_connection: finding a REPLSET connection (%s)",
connection_flags & MONGO_CON_FLAG_WRITE ? "write" : "read"
);
return mongo_get_read_write_connection_replicaset(manager, servers, connection_flags, error_message);
case MONGO_CON_TYPE_MULTIPLE:
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_get_read_write_connection: finding a MULTIPLE connection");
return mongo_get_connection_multiple(manager, servers, connection_flags, error_message);
default:
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "mongo_get_read_write_connection: connection type %d is not supported", servers->options.con_type);
*error_message = strdup("mongo_get_read_write_connection: Unknown connection type requested");
}
return NULL;
}
/**
* Sends the db.authenticate() command packet
*
* Returns:
* 0: when it didn't work - with the error_message set (extracted from the 'errmsg' field if possible)
* 1: when it worked
*/
int mongo_connection_authenticate_cmd(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, char *database, char *username, mcon_str *packet, char **error_message)
{
char *data_buffer, *errmsg;
double ok;
char *ptr;
if (!mongo_connect_send_packet(manager, con, options, packet, &data_buffer, error_message)) {
return 0;
}
/* Find data fields */
ptr = data_buffer + sizeof(int32_t); /* Skip the length */
/* Find errmsg */
if (bson_find_field_as_double(ptr, "ok", &ok)) {
if (ok > 0) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "authentication successful");
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "authentication failed");
}
}
if (bson_find_field_as_string(ptr, "errmsg", &errmsg)) {
*error_message = malloc(256);
snprintf(*error_message, 256, "Authentication failed on database '%s' with username '%s': %s", database, username, errmsg);
free(data_buffer);
return 0;
}
free(data_buffer);
return 1;
}
/* API interface to fetch a connection */
mongo_connection *mongo_get_read_write_connection(mongo_con_manager *manager, mongo_servers *servers, int connection_flags, char **error_message)
{
/* Which connection we return depends on the type of connection we want */
switch (servers->options.con_type) {
case MONGO_CON_TYPE_STANDALONE:
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_get_read_write_connection: finding a STANDALONE connection");
return mongo_get_connection_multiple(manager, servers, connection_flags, error_message);
case MONGO_CON_TYPE_REPLSET:
mongo_manager_log(
manager, MLOG_CON, MLOG_INFO,
"mongo_get_read_write_connection: finding a REPLSET connection (%s)",
connection_flags & MONGO_CON_FLAG_WRITE ? "write" : "read"
);
return mongo_get_read_write_connection_replicaset(manager, servers, connection_flags, error_message);
case MONGO_CON_TYPE_MULTIPLE:
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_get_read_write_connection: finding a MULTIPLE connection");
return mongo_get_connection_multiple(manager, servers, connection_flags, error_message);
default:
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "mongo_get_read_write_connection: connection type %d is not supported", servers->options.con_type);
*error_message = strdup("mongo_get_read_write_connection: Unknown connection type requested");
}
return NULL;
}
/* Processes a single option/value pair.
* Returns:
* -1 if it worked, but the option really shouldn't be used
* 0 if it worked
* 1 if either name or value was missing
* 2 if the option didn't exist
* 3 on logic errors */
static int mongo_process_option(mongo_con_manager *manager, mongo_servers *servers, char *name, char *value, char *pos, char **error_message)
{
char *tmp_name;
char *tmp_value;
int retval = 0;
if (!name || strcmp(name, "") == 0 || (name + 1 == value)) {
*error_message = strdup("- Found an empty option name");
mongo_manager_log(manager, MLOG_PARSE, MLOG_WARN, "- Found an empty option name");
return 1;
}
if (!value) {
*error_message = strdup("- Found an empty option value");
mongo_manager_log(manager, MLOG_PARSE, MLOG_WARN, "- Found an empty option value");
return 1;
}
tmp_name = mcon_strndup(name, value - name - 1);
tmp_value = mcon_strndup(value, pos - value);
retval = mongo_store_option(manager, servers, tmp_name, tmp_value, error_message);
free(tmp_name);
free(tmp_value);
return retval;
}
/**
* Sends a ping command to the server and stores the result.
*
* Returns 1 when it worked, and 0 when an error was encountered.
*/
int mongo_connection_ping(mongo_con_manager *manager, mongo_connection *con)
{
mcon_str *packet;
char *error_message = NULL;
struct timeval start, end;
char *data_buffer;
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "is_ping: start");
packet = bson_create_ping_packet(con);
gettimeofday(&start, NULL);
if (!mongo_connect_send_packet(manager, con, packet, &data_buffer, (char **) &error_message)) {
return 0;
}
gettimeofday(&end, NULL);
free(data_buffer);
con->last_ping = end.tv_sec;
con->ping_ms = (end.tv_sec - start.tv_sec) * 1000 + (end.tv_usec - start.tv_usec) / 1000;
if (con->ping_ms < 0) { /* some clocks do weird stuff */
con->ping_ms = 0;
}
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "is_ping: last pinged at %ld; time: %dms", con->last_ping, con->ping_ms);
return 1;
}
/**
* Authenticates a connection
*
* Returns 1 when it worked, or 0 when it didn't - with the error_message set.
*/
int mongo_connection_authenticate(mongo_con_manager *manager, mongo_connection *con, char *database, char *username, char *password, char *nonce, char **error_message)
{
mcon_str *packet;
char *data_buffer, *errmsg;
double ok;
char *ptr;
char *salted;
int length;
char *hash, *key;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "authenticate: start");
/* Calculate hash=md5(${username}:mongo:${password}) */
length = strlen(username) + 7 + strlen(password) + 1;
salted = malloc(length);
snprintf(salted, length, "%s:mongo:%s", username, password);
hash = mongo_util_md5_hex(salted, length - 1); /* -1 to chop off \0 */
free(salted);
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "authenticate: hash=md5(%s:mongo:%s) = %s", username, password, hash);
/* Calculate key=md5(${nonce}${username}${hash}) */
length = strlen(nonce) + strlen(username) + strlen(hash) + 1;
salted = malloc(length);
snprintf(salted, length, "%s%s%s", nonce, username, hash);
key = mongo_util_md5_hex(salted, length - 1); /* -1 to chop off \0 */
free(salted);
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "authenticate: key=md5(%s%s%s) = %s", nonce, username, hash, key);
packet = bson_create_authenticate_packet(con, database, username, nonce, key);
free(hash);
free(key);
if (!mongo_connect_send_packet(manager, con, packet, &data_buffer, error_message)) {
free(data_buffer);
return 0;
}
/* Find data fields */
ptr = data_buffer + sizeof(int32_t); /* Skip the length */
/* Find errmsg */
if (bson_find_field_as_double(ptr, "ok", &ok)) {
if (ok > 0) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "authentication successful");
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "authentication failed");
}
}
if (bson_find_field_as_string(ptr, "errmsg", &errmsg)) {
*error_message = malloc(256);
snprintf(*error_message, 256, "Authentication failed on database '%s' with username '%s': %s", database, username, errmsg);
free(data_buffer);
return 0;
}
free(data_buffer);
return 1;
}
void mongo_connection_destroy(mongo_con_manager *manager, mongo_connection *con)
{
int current_pid, connection_pid;
int i;
current_pid = getpid();
connection_pid = mongo_server_hash_to_pid(con->hash);
/* Only close the connection if it matches the current PID */
if (current_pid != connection_pid) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_connection_destroy: The process pid (%d) for %s doesn't match the connection pid (%d).", current_pid, con->hash, connection_pid);
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "mongo_connection_destroy: Closing socket for %s.", con->hash);
#ifdef WIN32
shutdown(con->socket, SD_BOTH);
closesocket(con->socket);
WSACleanup();
#else
shutdown(con->socket, SHUT_RDWR);
close(con->socket);
#endif
for (i = 0; i < con->tag_count; i++) {
free(con->tags[i]);
}
free(con->tags);
free(con->hash);
free(con);
}
}
/**
* Sends a getnonce command to the server for authentication
*
* Returns the nonsense when it worked, or NULL if it didn't.
*/
char *mongo_connection_getnonce(mongo_con_manager *manager, mongo_connection *con, char **error_message)
{
mcon_str *packet;
char *data_buffer;
char *ptr;
char *nonce;
char *retval = NULL;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "getnonce: start");
packet = bson_create_getnonce_packet(con);
if (!mongo_connect_send_packet(manager, con, packet, &data_buffer, error_message)) {
return NULL;
}
/* Find data fields */
ptr = data_buffer + sizeof(int32_t); /* Skip the length */
/* Find getnonce */
if (bson_find_field_as_string(ptr, "nonce", &nonce)) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "getnonce: found nonce '%s'", nonce);
} else {
*error_message = strdup("Couldn't find the nonce field");
free(data_buffer);
return NULL;
}
retval = strdup(nonce);
free(data_buffer);
return retval;
}
/* Collecting the correct servers */
static mcon_collection *filter_connections(mongo_con_manager *manager, int types, mongo_read_preference *rp)
{
mcon_collection *col;
mongo_con_manager_item *ptr = manager->connections;
int current_pid, connection_pid;
current_pid = getpid();
col = mcon_init_collection(sizeof(mongo_connection*));
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "filter_connections: adding connections:");
while (ptr) {
connection_pid = mongo_server_hash_to_pid(ptr->connection->hash);
if (connection_pid != current_pid) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "filter_connections: skipping %s as it doesn't match the current pid (%d)", ptr->connection->hash, current_pid);
} else if (ptr->connection->connection_type & types) {
mongo_print_connection_info(manager, ptr->connection, MLOG_FINE);
mcon_collection_add(col, ptr->connection);
}
ptr = ptr->next;
}
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "filter_connections: done");
return col;
}
int mongo_connection_authenticate_saslcontinue(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, mongo_server_def *server_def, int32_t conversation_id, char *payload, int payload_len, char **out_payload, int *out_payload_len, unsigned char *done, char **error_message)
{
mcon_str *packet;
char *data_buffer;
char *ptr;
double ok;
char *errmsg;
int32_t out_conversation_id;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "connection_authenticate_saslcontinue: continuing SASL authentication to '%s'", con->hash);
packet = bson_create_saslcontinue_packet(con, conversation_id, payload, payload_len);
if (!mongo_connect_send_packet(manager, con, options, packet, &data_buffer, error_message)) {
return 0;
}
/* Find data fields */
ptr = data_buffer + sizeof(int32_t); /* Skip the length */
if (bson_find_field_as_double(ptr, "ok", &ok)) {
if (ok > 0) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "SASL continue successful");
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "SASL continue failed");
if (bson_find_field_as_string(ptr, "errmsg", &errmsg)) {
int errlen = strlen("SASL Authentication failed on database '': ") + strlen(server_def->db) + strlen(errmsg);
*error_message = malloc(errlen);
snprintf(*error_message, errlen, "SASL Authentication failed on database '%s': %s", server_def->db, errmsg);
} else {
int errlen = strlen("SASL Authentication failed on database ''") + strlen(server_def->db);
*error_message = malloc(errlen);
snprintf(*error_message, errlen, "SASL Authentication failed on database '%s'", server_def->db);
}
free(data_buffer);
return 0;
}
}
if (bson_find_field_as_int32(ptr, "conversationId", &out_conversation_id)) {
if (out_conversation_id != conversation_id) {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "SASL continue failed: Got wrong conversation_id back! Expected %d but got %d", conversation_id, out_conversation_id);
free(data_buffer);
return 0;
}
bson_find_field_as_stringl(ptr, "payload", out_payload, out_payload_len, 1);
bson_find_field_as_bool(ptr, "done", done);
}
free(data_buffer);
return (int)ok;
}
int mongo_connection_authenticate_saslstart(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, mongo_server_def *server_def, char *mechanism, char *payload, unsigned int payload_len, char **out_payload, int *out_payload_len, int32_t *out_conversation_id, char **error_message)
{
mcon_str *packet;
char *data_buffer;
char *ptr;
char *smechanism;
double ok;
char *errmsg;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "connection_authenticate_sasl: Starting SASL authentication process to '%s'", con->hash);
if (server_def->mechanism == MONGO_AUTH_MECHANISM_MONGODB_CR) {
*error_message = strdup("Invalid authentication mechanism. Expected SASL mechanism, got MongoDB-CR");
return 0;
}
packet = bson_create_saslstart_packet(con, server_def->authdb ? server_def->authdb : server_def->db, mechanism, payload, payload_len);
if (!mongo_connect_send_packet(manager, con, options, packet, &data_buffer, error_message)) {
return 0;
}
/* Find data fields */
ptr = data_buffer + sizeof(int32_t); /* Skip the length */
if (bson_find_field_as_double(ptr, "ok", &ok)) {
if (ok > 0) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "SASL request successful");
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "SASL request failed");
if (bson_find_field_as_string(ptr, "errmsg", &errmsg)) {
*error_message = malloc(256);
snprintf(*error_message, 256, "SASL Authentication failed on database '%s': %s", server_def->db, errmsg);
} else {
*error_message = "SASL Authentication failed";
}
if (bson_find_field_as_document(ptr, "supportedMechanisms", (char**) &smechanism)) {
/* TODO: Retrieve a list of supportedMechanisms and return it somehow */
}
free(data_buffer);
return 0;
}
}
if (bson_find_field_as_int32(ptr, "conversationId", out_conversation_id)) {
bson_find_field_as_stringl(ptr, "payload", out_payload, out_payload_len, 1);
}
free(data_buffer);
return 1;
}
void mongo_connection_destroy(mongo_con_manager *manager, void *data, int why)
{
int current_pid, connection_pid;
int i;
mongo_connection *con = (mongo_connection *)data;
current_pid = getpid();
connection_pid = mongo_server_hash_to_pid(con->hash);
/* Only close the connection if it matches the current PID */
if (current_pid == connection_pid) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "mongo_connection_destroy: Destroying connection object for %s", con->hash);
if (con->socket) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "mongo_connection_destroy: Closing socket for %s.", con->hash);
manager->close(con, why);
con->socket = NULL;
for (i = 0; i < con->tag_count; i++) {
free(con->tags[i]);
}
free(con->tags);
if (con->cleanup_list) {
mongo_connection_deregister_callback *ptr = con->cleanup_list;
mongo_connection_deregister_callback *prev;
do {
if (ptr->callback_data) {
ptr->mongo_cleanup_cb(ptr->callback_data);
}
if (!ptr->next) {
free(ptr);
ptr = NULL;
break;
}
prev = ptr;
ptr = ptr->next;
free(prev);
prev = NULL;
} while(1);
con->cleanup_list = NULL;
}
free(con->hash);
free(con);
}
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_connection_destroy: The process pid (%d) for %s doesn't match the connection pid (%d).", current_pid, con->hash, connection_pid);
}
}
void mongo_connection_destroy(mongo_con_manager *manager, mongo_connection *con)
{
int current_pid, connection_pid;
int i;
current_pid = getpid();
connection_pid = mongo_server_hash_to_pid(con->hash);
/* Only close the connection if it matches the current PID */
if (current_pid != connection_pid) {
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "mongo_connection_destroy: The process pid (%d) for %s doesn't match the connection pid (%d).", current_pid, con->hash, connection_pid);
} else {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "mongo_connection_destroy: Closing socket for %s.", con->hash);
#ifdef WIN32
shutdown(con->socket, SD_BOTH);
closesocket(con->socket);
WSACleanup();
#else
shutdown(con->socket, SHUT_RDWR);
close(con->socket);
#endif
for (i = 0; i < con->tag_count; i++) {
free(con->tags[i]);
}
if (con->cleanup_list) {
mongo_connection_deregister_callback *ptr = con->cleanup_list;
mongo_connection_deregister_callback *prev;
do {
if (ptr->callback_data) {
ptr->mongo_cleanup_cb(ptr->callback_data);
}
if (!ptr->next) {
free(ptr);
ptr = NULL;
break;
}
prev = ptr;
ptr = ptr->next;
free(prev);
prev = NULL;
} while(1);
con->cleanup_list = NULL;
}
free(con->tags);
free(con->hash);
free(con);
}
}
static mcon_collection *mongo_filter_candidates_by_credentials(mongo_con_manager *manager, mcon_collection *candidates, mongo_servers *servers)
{
int i;
char *db, *username, *auth_hash, *hashed = NULL;
mcon_collection *filtered;
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting by credentials");
filtered = mcon_init_collection(sizeof(mongo_connection*));
for (i = 0; i < candidates->count; i++) {
db = username = auth_hash = hashed = NULL;
mongo_server_split_hash(((mongo_connection *) candidates->data[i])->hash, NULL, NULL, NULL, &db, &username, &auth_hash, NULL);
if (servers->server[0]->username && servers->server[0]->password && servers->server[0]->db) {
if (strcmp(db, servers->server[0]->db) != 0) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "- skipping '%s', database didn't match ('%s' vs '%s')", ((mongo_connection *) candidates->data[i])->hash, db, servers->server[0]->db);
goto skip;
}
if (strcmp(username, servers->server[0]->username) != 0) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "- skipping '%s', username didn't match ('%s' vs '%s')", ((mongo_connection *) candidates->data[i])->hash, username, servers->server[0]->username);
goto skip;
}
hashed = mongo_server_create_hashed_password(username, servers->server[0]->password);
if (strcmp(auth_hash, hashed) != 0) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "- skipping '%s', authentication hash didn't match ('%s' vs '%s')", ((mongo_connection *) candidates->data[i])->hash, auth_hash, hashed);
goto skip;
}
}
mcon_collection_add(filtered, (mongo_connection *) candidates->data[i]);
mongo_print_connection_info(manager, (mongo_connection *) candidates->data[i], MLOG_FINE);
skip:
if (db) {
free(db);
}
if (username) {
free(username);
}
if (auth_hash) {
free(auth_hash);
}
if (hashed) {
free(hashed);
}
}
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting by credentials: done");
return filtered;
}
static void mongo_print_connection_info(mongo_con_manager *manager, mongo_connection *con, int level)
{
int i;
mongo_manager_log(manager, MLOG_RS, level,
"- connection: type: %s, socket: %d, ping: %d, hash: %s",
mongo_connection_type(con->connection_type),
42, /* FIXME: STREAMS: Maybe we do need a union here: con->socket, */
con->ping_ms,
con->hash
);
for (i = 0; i < con->tag_count; i++) {
mongo_manager_log(manager, MLOG_RS, level,
" - tag: %s", con->tags[i]
);
}
}
static void mongo_print_connection_info(mongo_con_manager *manager, mongo_connection *con, int level)
{
int i;
mongo_manager_log(manager, MLOG_RS, level,
"- connection: type: %s, socket: %d, ping: %d, hash: %s",
mongo_connection_type(con->connection_type),
con->socket,
con->ping_ms,
con->hash
);
for (i = 0; i < con->tag_count; i++) {
mongo_manager_log(manager, MLOG_RS, level,
" - tag: %s", con->tags[i]
);
}
}
int mongo_connection_ping_check(mongo_con_manager *manager, int last_ping, struct timeval *start)
{
gettimeofday(start, NULL);
if ((last_ping + manager->ping_interval) > start->tv_sec) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "is_ping: skipping: last ran at %ld, now: %ld, time left: %ld", last_ping, start->tv_sec, last_ping + manager->ping_interval - start->tv_sec);
return 0;
}
return 1;
}
/* Collecting the correct servers */
static mcon_collection *filter_connections(mongo_con_manager *manager, int types, mongo_read_preference *rp)
{
mcon_collection *col;
mongo_con_manager_item *ptr = manager->connections;
col = mcon_init_collection(sizeof(mongo_connection*));
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "filter_connections: adding connections:");
while (ptr) {
if (ptr->connection->connection_type & types) {
mongo_print_connection_info(manager, ptr->connection, MLOG_FINE);
mcon_collection_add(col, ptr->connection);
}
ptr = ptr->next;
}
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "filter_connections: done");
return col;
}
mcon_collection* mongo_find_candidate_servers(mongo_con_manager *manager, mongo_read_preference *rp, mongo_servers *servers)
{
int i;
mcon_collection *all, *filtered;
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "finding candidate servers");
all = mongo_find_all_candidate_servers(manager, rp);
if (servers->con_type == MONGO_CON_TYPE_REPLSET) {
filtered = mongo_filter_candidates_by_replicaset_name(manager, all, servers);
} else {
filtered = mongo_filter_candidates_by_seed(manager, all, servers);
}
mcon_collection_free(all);
all = filtered;
filtered = mongo_filter_candidates_by_credentials(manager, all, servers);
mcon_collection_free(all);
all = filtered;
if (rp->tagset_count != 0) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "limiting by tagsets");
/* If we have tagsets configured for the replicaset then we need to do
* some more filtering */
for (i = 0; i < rp->tagset_count; i++) {
char *tmp_ts = mongo_read_preference_squash_tagset(rp->tagsets[i]);
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "checking tagset: %s", tmp_ts);
filtered = mongo_filter_candidates_by_tagset(manager, all, rp->tagsets[i]);
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "tagset %s matched %d candidates", tmp_ts, filtered->count);
free(tmp_ts);
if (filtered->count > 0) {
mcon_collection_free(all);
return filtered;
}
}
mcon_collection_free(filtered);
mcon_collection_free(all);
return NULL;
} else {
return all;
}
}
mongo_connection *mongo_pick_server_from_set(mongo_con_manager *manager, mcon_collection *col, mongo_read_preference *rp)
{
mongo_connection *con = NULL;
int entry = rand() % col->count;
if (rp->type == MONGO_RP_PRIMARY_PREFERRED) {
if (((mongo_connection*)col->data[0])->connection_type == MONGO_NODE_PRIMARY) {
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "pick server: the primary");
con = (mongo_connection*)col->data[0];
mongo_print_connection_info(manager, con, MLOG_INFO);
return con;
}
}
/* For now, we just pick a random server from the set */
mongo_manager_log(manager, MLOG_RS, MLOG_FINE, "pick server: random element %d", entry);
con = (mongo_connection*)col->data[entry];
mongo_print_connection_info(manager, con, MLOG_INFO);
return con;
}
/**
* Authenticates a connection using MONGODB-X509
*
* Returns:
* 0: when it didn't work - with the error_message set.
* 1: when it worked
*/
int mongo_connection_authenticate_mongodb_x509(mongo_con_manager *manager, mongo_connection *con, mongo_server_options *options, char *database, char *username, char **error_message)
{
mcon_str *packet;
mongo_manager_log(manager, MLOG_CON, MLOG_INFO, "authenticate (X509): start");
packet = bson_create_authenticate_packet(con, "MONGODB-X509", database, username, NULL, NULL);
return mongo_connection_authenticate_cmd(manager, con, options, database, username, packet, error_message);
}
static mongo_connection *mongo_get_read_write_connection_replicaset(mongo_con_manager *manager, mongo_servers *servers, int connection_flags, char **error_message)
{
mongo_connection *con = NULL;
mongo_connection *tmp;
mcon_collection *collection;
char *con_error_message = NULL;
int i;
int found_connected_server = 0;
/* Create a connection to all of the servers in the seed list */
for (i = 0; i < servers->count; i++) {
tmp = mongo_get_connection_single(manager, servers->server[i], &servers->options, connection_flags, (char **) &con_error_message);
if (tmp) {
found_connected_server = 1;
} else if (!(connection_flags & MONGO_CON_FLAG_DONT_CONNECT)) {
mongo_manager_log(manager, MLOG_CON, MLOG_WARN, "Couldn't connect to '%s:%d': %s", servers->server[i]->host, servers->server[i]->port, con_error_message);
free(con_error_message);
}
}
if (!found_connected_server && (connection_flags & MONGO_CON_FLAG_DONT_CONNECT)) {
return NULL;
}
/* Discover more nodes. This also adds a connection to "servers" for each
* new node */
mongo_discover_topology(manager, servers);
/* Depending on whether we want a read or a write connection, run the correct algorithms */
if (connection_flags & MONGO_CON_FLAG_WRITE) {
mongo_read_preference tmp_rp;
mongo_read_preference_copy(&servers->read_pref, &tmp_rp);
tmp_rp.type = MONGO_RP_PRIMARY;
collection = mongo_find_candidate_servers(manager, &tmp_rp, servers);
mongo_read_preference_dtor(&tmp_rp);
} else {
collection = mongo_find_candidate_servers(manager, &servers->read_pref, servers);
}
if (!collection) {
*error_message = strdup("No candidate servers found");
return NULL;
}
if (collection->count == 0) {
*error_message = strdup("No candidate servers found");
mcon_collection_free(collection);
return NULL;
}
collection = mongo_sort_servers(manager, collection, &servers->read_pref);
collection = mongo_select_nearest_servers(manager, collection, &servers->read_pref);
con = mongo_pick_server_from_set(manager, collection, &servers->read_pref);
/* Cleaning up */
mcon_collection_free(collection);
return con;
}
/* Option parser helpers */
static int parse_read_preference_tags(mongo_con_manager *manager, mongo_servers *servers, char *value, char **error_message)
{
mongo_read_preference_tagset *tmp_ts = calloc(1, sizeof(mongo_read_preference_tagset));
/* format = dc:ny,rack:1 - empty is allowed! */
if (strlen(value) == 0) {
mongo_read_preference_add_tagset(&servers->read_pref, tmp_ts);
} else {
char *start, *end, *colon, *tmp_name, *tmp_value;
start = value;
while (1) {
end = strchr(start, ',');
colon = strchr(start, ':');
if (!colon) {
int len = strlen(start) + sizeof("Error while trying to parse tags: No separator for ''");
*error_message = malloc(len + 1);
snprintf(*error_message, len, "Error while trying to parse tags: No separator for '%s'", start);
mongo_read_preference_tagset_dtor(tmp_ts);
return 3;
}
tmp_name = mcon_strndup(start, colon - start);
if (end) {
tmp_value = mcon_strndup(colon + 1, end - colon - 1);
start = end + 1;
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "- Found tag '%s': '%s'", tmp_name, tmp_value);
mongo_read_preference_add_tag(tmp_ts, tmp_name, tmp_value);
free(tmp_value);
free(tmp_name);
} else {
mongo_manager_log(manager, MLOG_PARSE, MLOG_INFO, "- Found tag '%s': '%s'", tmp_name, colon + 1);
mongo_read_preference_add_tag(tmp_ts, tmp_name, colon + 1);
free(tmp_name);
break;
}
}
mongo_read_preference_add_tagset(&servers->read_pref, tmp_ts);
}
return 0;
}
void *mongo_manager_find_by_hash(mongo_con_manager *manager, mongo_con_manager_item *ptr, char *hash)
{
while (ptr) {
if (strcmp(ptr->hash, hash) == 0) {
mongo_manager_log(manager, MLOG_CON, MLOG_FINE, "found connection %s (looking for %s)", ptr->hash, hash);
return ptr->data;
}
ptr = ptr->next;
}
return NULL;
}
