SilcClientEntry
silc_idlist_add_client(SilcIDList id_list, char *nickname, char *username,
char *userinfo, SilcClientID *id,
SilcServerEntry router, void *connection)
{
SilcClientEntry client;
char *nicknamec = NULL;
SILC_LOG_DEBUG(("Adding new client entry"));
/* Normalize name. This is cached, original is in client context. */
if (nickname) {
nicknamec = silc_identifier_check(nickname, strlen(nickname),
SILC_STRING_UTF8, 128, NULL);
if (!nicknamec)
return NULL;
}
/* Check username. */
if (username) {
char u[128 + 1], h[256 + 1];
int ret;
ret = silc_parse_userfqdn(username, u, sizeof(u), h, sizeof(h));
if (!ret)
return NULL;
if (!silc_identifier_verify(u, strlen(u), SILC_STRING_UTF8, 128))
return NULL;
if (ret > 1 && !silc_identifier_verify(h, strlen(h),
SILC_STRING_UTF8, 256))
return NULL;
}
client = silc_calloc(1, sizeof(*client));
if (!client)
return NULL;
client->nickname = nickname;
client->username = username ? strdup(username) : NULL;
client->userinfo = userinfo;
client->id = id;
client->router = router;
client->connection = connection;
client->channels = silc_hash_table_alloc(3, silc_hash_ptr, NULL,
NULL, NULL, NULL, NULL, TRUE);
if (!silc_idcache_add(id_list->clients, nicknamec, (void *)client->id,
(void *)client)) {
silc_hash_table_free(client->channels);
silc_free(client);
silc_free(nicknamec);
return NULL;
}
return client;
}
SilcBool silc_client_init(SilcClient client, const char *username,
const char *hostname, const char *realname,
SilcClientRunning running, void *context)
{
SILC_LOG_DEBUG(("Initializing client"));
if (!client)
return FALSE;
if (!username || !hostname) {
SILC_LOG_ERROR(("Username and hostname must be given to "
"silc_client_init"));
return FALSE;
}
if (!realname)
realname = username;
/* Validate essential strings */
if (!silc_identifier_verify(username, strlen(username),
SILC_STRING_UTF8, 128)) {
SILC_LOG_ERROR(("Malformed username '%s'. Username must be UTF-8 string",
client->username));
return FALSE;
}
if (!silc_identifier_verify(hostname, strlen(hostname),
SILC_STRING_UTF8, 256)) {
SILC_LOG_ERROR(("Malformed hostname '%s'. Hostname must be UTF-8 string",
client->hostname));
return FALSE;
}
if (!silc_utf8_valid(realname, strlen(realname))) {
SILC_LOG_ERROR(("Malformed realname '%s'. Realname must be UTF-8 string",
client->realname));
return FALSE;
}
/* Take the name strings */
client->username = strdup(username);
client->hostname = strdup(hostname);
client->realname = strdup(realname);
if (!username || !hostname || !realname)
return FALSE;
client->internal->ftp_sessions = silc_dlist_init();
if (!client->internal->ftp_sessions)
return FALSE;
if (!client->internal->params->dont_register_crypto_library) {
/* Initialize the crypto library. If application has done this already
this has no effect. Also, we will not be overriding something
application might have registered earlier. */
silc_cipher_register_default();
silc_pkcs_register_default();
silc_hash_register_default();
silc_hmac_register_default();
}
/* Initialize random number generator */
client->rng = silc_rng_alloc();
if (!client->rng)
return FALSE;
silc_rng_init(client->rng);
silc_rng_global_init(client->rng);
/* Initialize the scheduler */
client->schedule = silc_schedule_init(0, client);
if (!client->schedule)
return FALSE;
/* Allocate client lock */
silc_mutex_alloc(&client->internal->lock);
/* Register commands */
silc_client_commands_register(client);
/* Start packet engine */
client->internal->packet_engine =
silc_packet_engine_start(client->rng, FALSE, &silc_client_stream_cbs,
client);
if (!client->internal->packet_engine)
return FALSE;
/* Initialize and start the client FSM */
client->internal->running = running;
client->internal->running_context = context;
silc_fsm_init(&client->internal->fsm, client, NULL, NULL, client->schedule);
silc_fsm_event_init(&client->internal->wait_event, &client->internal->fsm);
silc_fsm_start_sync(&client->internal->fsm, silc_client_st_run);
/* Signal the application when we are running */
client->internal->run_callback = TRUE;
SILC_FSM_EVENT_SIGNAL(&client->internal->wait_event);
return TRUE;
}
static char
silc_server_command_reply_whowas_save(SilcServerCommandReplyContext cmd)
{
SilcServer server = cmd->server;
SilcUInt32 len, id_len;
unsigned char *id_data;
char *nickname, *username, *realname;
SilcID id;
SilcClientEntry client;
SilcIDCacheEntry cache = NULL;
char nick[128 + 1], servername[256 + 1], uname[128 + 1];
int global = FALSE;
const char *hostname, *ip;
silc_socket_stream_get_info(silc_packet_stream_get_stream(cmd->sock),
NULL, &hostname, &ip, NULL);
id_data = silc_argument_get_arg_type(cmd->args, 2, &id_len);
nickname = silc_argument_get_arg_type(cmd->args, 3, &len);
username = silc_argument_get_arg_type(cmd->args, 4, &len);
if (!id_data || !nickname || !username)
return FALSE;
realname = silc_argument_get_arg_type(cmd->args, 5, &len);
if (!silc_id_payload_parse_id(id_data, id_len, &id))
return FALSE;
/* Check if we have this client cached already. */
client = silc_idlist_find_client_by_id(server->local_list,
SILC_ID_GET_ID(id),
FALSE, &cache);
if (!client) {
client = silc_idlist_find_client_by_id(server->global_list,
SILC_ID_GET_ID(id),
FALSE, &cache);
global = TRUE;
}
if (!client) {
/* If router did not find such Client ID in its lists then this must
be bogus client or some router in the net is buggy. */
if (server->server_type != SILC_SERVER)
return FALSE;
/* Take hostname out of nick string if it includes it. */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
/* We don't have that client anywhere, add it. The client is added
to global list since server didn't have it in the lists so it must be
global. */
client = silc_idlist_add_client(server->global_list,
strdup(nick), username,
strdup(realname),
silc_id_dup(SILC_ID_GET_ID(id),
SILC_ID_CLIENT),
silc_packet_get_context(cmd->sock), NULL);
if (!client) {
SILC_LOG_ERROR(("Could not add new client to the ID Cache"));
return FALSE;
}
client->data.status |= SILC_IDLIST_STATUS_RESOLVED;
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
client->servername = servername[0] ? strdup(servername) : NULL;
} else {
/* We have the client already, update the data */
/* Check nickname */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
nickname = silc_identifier_check(nick, strlen(nick), SILC_STRING_UTF8,
128, NULL);
if (!nickname) {
SILC_LOG_ERROR(("Malformed nickname '%s' received in WHOWAS reply "
"from %s",
nick, hostname ? hostname : ""));
return FALSE;
}
/* Check username */
silc_parse_userfqdn(username, uname, sizeof(uname), NULL, 0);
if (!silc_identifier_verify(uname, strlen(uname), SILC_STRING_UTF8, 128))
return FALSE;
silc_free(client->nickname);
silc_free(client->username);
silc_free(client->servername);
client->nickname = strdup(nick);
client->username = strdup(username);
client->servername = servername[0] ? strdup(servername) : NULL;
client->data.status |= SILC_IDLIST_STATUS_RESOLVED;
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
/* Update cache entry */
silc_idcache_update_by_context(global ? server->global_list->clients :
server->local_list->clients, client, NULL,
nickname, TRUE);
}
/* If client is global and is not on any channel then add that we'll
expire the entry after a while. */
if (global) {
client = silc_idlist_find_client_by_id(server->global_list, client->id,
FALSE, &cache);
if (client && !silc_hash_table_count(client->channels)) {
client->data.created = silc_time();
silc_dlist_del(server->expired_clients, client);
silc_dlist_add(server->expired_clients, client);
}
}
return TRUE;
}
static char
silc_server_command_reply_whois_save(SilcServerCommandReplyContext cmd)
{
SilcServer server = cmd->server;
unsigned char *id_data, *umodes;
char *nickname, *username, *realname, *tmp;
unsigned char *fingerprint;
SilcID id;
SilcClientEntry client;
char global = FALSE;
char nick[128 + 1], servername[256 + 1], uname[128 + 1];
SilcUInt32 mode = 0, len, len2, id_len, flen;
const char *hostname, *ip;
silc_socket_stream_get_info(silc_packet_stream_get_stream(cmd->sock),
NULL, &hostname, &ip, NULL);
id_data = silc_argument_get_arg_type(cmd->args, 2, &id_len);
nickname = silc_argument_get_arg_type(cmd->args, 3, &len);
username = silc_argument_get_arg_type(cmd->args, 4, &len);
realname = silc_argument_get_arg_type(cmd->args, 5, &len);
if (!id_data || !nickname || !username || !realname)
return FALSE;
tmp = silc_argument_get_arg_type(cmd->args, 7, &len);
if (tmp)
SILC_GET32_MSB(mode, tmp);
if (!silc_id_payload_parse_id(id_data, id_len, &id))
return FALSE;
fingerprint = silc_argument_get_arg_type(cmd->args, 9, &flen);
/* Check if we have this client cached already. */
client = silc_idlist_find_client_by_id(server->local_list,
SILC_ID_GET_ID(id),
FALSE, NULL);
if (!client) {
client = silc_idlist_find_client_by_id(server->global_list,
SILC_ID_GET_ID(id),
FALSE, NULL);
global = TRUE;
}
if (!client) {
/* If router did not find such Client ID in its lists then this must
be bogus client or some router in the net is buggy. */
if (server->server_type != SILC_SERVER)
return FALSE;
/* Take hostname out of nick string if it includes it. */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
/* We don't have that client anywhere, add it. The client is added
to global list since server didn't have it in the lists so it must be
global. This will check for valid nickname and username strings. */
client = silc_idlist_add_client(server->global_list,
strdup(nick), username,
strdup(realname),
silc_id_dup(SILC_ID_GET_ID(id),
SILC_ID_CLIENT),
silc_packet_get_context(cmd->sock),
NULL);
if (!client) {
SILC_LOG_ERROR(("Could not add new client to the ID Cache"));
return FALSE;
}
client->data.status |=
(SILC_IDLIST_STATUS_REGISTERED | SILC_IDLIST_STATUS_RESOLVED);
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
client->mode = mode;
client->servername = servername[0] ? strdup(servername) : NULL;
SILC_LOG_DEBUG(("stat.clients %d->%d", server->stat.clients,
server->stat.clients + 1));
server->stat.clients++;
} else {
/* We have the client already, update the data */
SILC_LOG_DEBUG(("Updating client data"));
/* Check nickname */
silc_parse_userfqdn(nickname, nick, sizeof(nick), servername,
sizeof(servername));
nickname = silc_identifier_check(nick, strlen(nick), SILC_STRING_UTF8,
128, NULL);
if (!nickname) {
SILC_LOG_ERROR(("Malformed nickname '%s' received in WHOIS reply "
"from %s",
hostname ? hostname : "", nick));
return FALSE;
}
/* Check username */
silc_parse_userfqdn(username, uname, sizeof(uname), NULL, 0);
if (!silc_identifier_verify(uname, strlen(uname), SILC_STRING_UTF8, 128)) {
SILC_LOG_ERROR(("Malformed username '%s' received in WHOIS reply "
"from %s",
hostname ? hostname : "", tmp));
return FALSE;
}
/* Update entry */
silc_idcache_update_by_context(global ? server->global_list->clients :
server->local_list->clients, client, NULL,
nickname, TRUE);
silc_free(client->nickname);
silc_free(client->username);
silc_free(client->userinfo);
silc_free(client->servername);
client->nickname = strdup(nick);
client->username = strdup(username);
client->userinfo = strdup(realname);
client->servername = servername[0] ? strdup(servername) : NULL;
client->mode = mode;
client->data.status |= SILC_IDLIST_STATUS_RESOLVED;
client->data.status &= ~SILC_IDLIST_STATUS_RESOLVING;
}
/* Save channel list if it was sent to us */
if (server->server_type == SILC_SERVER) {
tmp = silc_argument_get_arg_type(cmd->args, 6, &len);
umodes = silc_argument_get_arg_type(cmd->args, 10, &len2);
if (tmp && umodes) {
SilcBufferStruct channels_buf, umodes_buf;
silc_buffer_set(&channels_buf, tmp, len);
silc_buffer_set(&umodes_buf, umodes, len2);
silc_server_save_user_channels(server, cmd->sock, client, &channels_buf,
&umodes_buf);
} else {
silc_server_save_user_channels(server, cmd->sock, client, NULL, NULL);
}
}
if (fingerprint && flen == sizeof(client->data.fingerprint))
memcpy(client->data.fingerprint, fingerprint, flen);
/* Take Requested Attributes if set. */
tmp = silc_argument_get_arg_type(cmd->args, 11, &len);
if (tmp) {
silc_free(client->attrs);
client->attrs = silc_memdup(tmp, len);
client->attrs_len = len;
/* Try to take public key from attributes if present and we don't have
the key already. Do this only on normal server. Routers do GETKEY
for all clients anyway. */
if (server->server_type != SILC_ROUTER && !client->data.public_key) {
SilcAttributePayload attr;
SilcAttributeObjPk pk;
unsigned char f[SILC_HASH_MAXLEN];
SilcDList attrs = silc_attribute_payload_parse(tmp, len);
SILC_LOG_DEBUG(("Take client public key from attributes"));
if (attrs) {
silc_dlist_start(attrs);
while ((attr = silc_dlist_get(attrs)) != SILC_LIST_END) {
if (silc_attribute_get_attribute(attr) ==
SILC_ATTRIBUTE_USER_PUBLIC_KEY) {
if (!silc_attribute_get_object(attr, &pk, sizeof(pk)))
continue;
/* Take only SILC public keys */
if (strcmp(pk.type, "silc-rsa")) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
/* Verify that the server provided fingerprint matches the key */
silc_hash_make(server->sha1hash, pk.data, pk.data_len, f);
if (memcmp(f, client->data.fingerprint, sizeof(f))) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
/* Save the public key. */
if (!silc_pkcs_public_key_alloc(SILC_PKCS_SILC,
pk.data, pk.data_len,
&client->data.public_key)) {
silc_free(pk.type);
silc_free(pk.data);
continue;
}
SILC_LOG_DEBUG(("Saved client public key from attributes"));
/* Add client's public key to repository */
if (!silc_server_get_public_key_by_client(server, client, NULL))
silc_skr_add_public_key_simple(server->repository,
client->data.public_key,
SILC_SKR_USAGE_IDENTIFICATION,
client, NULL);
silc_free(pk.type);
silc_free(pk.data);
break;
}
}
silc_attribute_payload_list_free(attrs);
}
}
}
return TRUE;
}