X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilcclient%2Fclient_notify.c;h=d54e6ccc811e20919f1f9e5fda96fce1b64d3c79;hb=dba72cd444469151d0def91ec67361c68ee78022;hp=004d4331c546d3419ae7fc11c2d4f38e6b43ea5e;hpb=6caeb1c499fe1ab80aaa24b1a35c89b91c57b7cf;p=silc.git diff --git a/lib/silcclient/client_notify.c b/lib/silcclient/client_notify.c index 004d4331..d54e6ccc 100644 --- a/lib/silcclient/client_notify.c +++ b/lib/silcclient/client_notify.c @@ -22,1453 +22,1362 @@ #include "silcclient.h" #include "client_internal.h" -/* Context used for resolving client, channel and server info. */ -typedef struct { - void *packet; - void *context; - SilcSocketConnection sock; -} *SilcClientNotifyResolve; - -SILC_TASK_CALLBACK(silc_client_notify_check_client) +/************************** Types and definitions ***************************/ + +#define NOTIFY conn->client->internal->ops->notify + +/************************ Static utility functions **************************/ + +/* Entry resolving callback. This will continue processing the notify. */ + +static void silc_client_notify_resolved(SilcClient client, + SilcClientConnection conn, + SilcStatus status, + SilcDList entries, + void *context) { - SilcClientNotifyResolve res = (SilcClientNotifyResolve)context; - SilcClient client = res->context; - SilcClientConnection conn = res->sock->user_data; - SilcClientID *client_id = res->packet; - silc_client_get_client_by_id_resolve(client, conn, client_id, - NULL, NULL, NULL); - silc_free(client_id); - silc_socket_free(res->sock); - silc_free(res); + /* If no entries found, just finish the notify processing, a silent error */ + if (!entries) + silc_fsm_next(context, silc_client_notify_processed); + + /* Continue processing the notify */ + SILC_FSM_CALL_CONTINUE_SYNC(context); } -SILC_TASK_CALLBACK(silc_client_notify_del_client_cb) +/********************************* Notify ***********************************/ + +/* Process received notify packet */ + +SILC_FSM_STATE(silc_client_notify) { - SilcClientNotifyResolve res = (SilcClientNotifyResolve)context; - SilcClient client = res->context; - SilcClientConnection conn = res->sock->user_data; - SilcClientID *client_id = res->packet; - SilcClientEntry client_entry; - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (client_entry) - silc_client_del_client(client, conn, client_entry); - silc_free(client_id); - silc_socket_free(res->sock); - silc_free(res); + SilcPacket packet = state_context; + SilcNotifyPayload payload; + + payload = silc_notify_payload_parse(silc_buffer_data(&packet->buffer), + silc_buffer_len(&packet->buffer)); + if (!payload) { + SILC_LOG_DEBUG(("Malformed notify payload")); + silc_packet_free(packet); + return SILC_FSM_FINISH; + } + + if (!silc_notify_get_args(payload)) { + SILC_LOG_DEBUG(("Malformed notify")); + silc_notify_payload_free(payload); + silc_packet_free(packet); + return SILC_FSM_FINISH; + } + + /* Save notify payload to packet context during processing */ + packet->next = (void *)payload; + + /* Process the notify */ + switch (silc_notify_get_type(payload)) { + + case SILC_NOTIFY_TYPE_NONE: + /** NONE */ + silc_fsm_next(fsm, silc_client_notify_none); + break; + + case SILC_NOTIFY_TYPE_INVITE: + /** INVITE */ + silc_fsm_next(fsm, silc_client_notify_invite); + break; + + case SILC_NOTIFY_TYPE_JOIN: + /** JOIN */ + silc_fsm_next(fsm, silc_client_notify_join); + break; + + case SILC_NOTIFY_TYPE_LEAVE: + /** LEAVE */ + silc_fsm_next(fsm, silc_client_notify_leave); + break; + + case SILC_NOTIFY_TYPE_SIGNOFF: + /** SIGNOFF */ + silc_fsm_next(fsm, silc_client_notify_signoff); + break; + + case SILC_NOTIFY_TYPE_TOPIC_SET: + /** TOPIC_SET */ + silc_fsm_next(fsm, silc_client_notify_topic_set); + break; + + case SILC_NOTIFY_TYPE_NICK_CHANGE: + /** NICK_CHANGE */ + silc_fsm_next(fsm, silc_client_notify_nick_change); + break; + + case SILC_NOTIFY_TYPE_CMODE_CHANGE: + /** CMODE_CHANGE */ + silc_fsm_next(fsm, silc_client_notify_cmode_change); + break; + + case SILC_NOTIFY_TYPE_CUMODE_CHANGE: + /** CUMODE_CHANGE */ + silc_fsm_next(fsm, silc_client_notify_cumode_change); + break; + + case SILC_NOTIFY_TYPE_MOTD: + /** MOTD */ + silc_fsm_next(fsm, silc_client_notify_motd); + break; + + case SILC_NOTIFY_TYPE_CHANNEL_CHANGE: + /** CHANNEL_CHANGE */ + silc_fsm_next(fsm, silc_client_notify_channel_change); + break; + + case SILC_NOTIFY_TYPE_KICKED: + /** KICKED */ + silc_fsm_next(fsm, silc_client_notify_kicked); + break; + + case SILC_NOTIFY_TYPE_KILLED: + /** KILLED */ + silc_fsm_next(fsm, silc_client_notify_killed); + break; + + case SILC_NOTIFY_TYPE_SERVER_SIGNOFF: + /** SERVER_SIGNOFF */ + silc_fsm_next(fsm, silc_client_notify_server_signoff); + break; + + case SILC_NOTIFY_TYPE_ERROR: + /** ERROR */ + silc_fsm_next(fsm, silc_client_notify_error); + break; + + case SILC_NOTIFY_TYPE_WATCH: + /** WATCH */ + silc_fsm_next(fsm, silc_client_notify_watch); + break; + + default: + /** Unknown notify */ + silc_notify_payload_free(payload); + silc_packet_free(packet); + return SILC_FSM_FINISH; + break; + } + + return SILC_FSM_YIELD; } -/* Called when notify is received and some async operation (such as command) - is required before processing the notify message. This calls again the - silc_client_notify_by_server and reprocesses the original notify packet. */ +/* Notify processed, finish the packet processing thread */ -static void silc_client_notify_by_server_pending(void *context, void *context2) +SILC_FSM_STATE(silc_client_notify_processed) { - SilcClientNotifyResolve res = (SilcClientNotifyResolve)context; - SilcClientCommandReplyContext reply = - (SilcClientCommandReplyContext)context2; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + silc_notify_payload_free(payload); + silc_packet_free(packet); + return SILC_FSM_FINISH; +} + +/********************************** NONE ************************************/ + +SILC_FSM_STATE(silc_client_notify_none) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + + /* Notify application */ + NOTIFY(client, conn, type, silc_argument_get_arg_type(args, 1, NULL)); + + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} + +/********************************* INVITE ***********************************/ - SILC_LOG_DEBUG(("Start")); +/* Someone invite me to a channel */ - if (reply && !silc_command_get_status(reply->payload, NULL, NULL)) +SILC_FSM_STATE(silc_client_notify_invite) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + SilcChannelEntry channel = NULL; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; + + SILC_LOG_DEBUG(("Notify: INVITE")); + + /* Get Channel ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Get the channel name */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) goto out; - silc_client_notify_by_server(res->context, res->sock, res->packet); + /* Get the channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + + /* Get sender Client ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Find Client entry and if not found query it */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + + /* Notify application */ + NOTIFY(client, conn, type, channel, tmp, client_entry); + + silc_client_unref_client(client, conn, client_entry); out: - silc_socket_free(res->sock); - silc_packet_context_free(res->packet); - silc_free(res); + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; } -/* Resets the channel entry's resolve_cmd_ident after whatever-thing - was resolved is completed. */ +/********************************** JOIN ************************************/ -static void silc_client_channel_cond(void *context, void *context2) +/* Someone joined a channel */ + +SILC_FSM_STATE(silc_client_notify_join) { - SilcClientNotifyResolve res = (SilcClientNotifyResolve)context; - SilcClient client = res->context; - SilcClientConnection conn = res->sock->user_data; - SilcChannelID *channel_id = res->packet; - SilcChannelEntry channel; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (channel) - channel->resolve_cmd_ident = 0; - silc_free(channel_id); - silc_socket_free(res->sock); - silc_free(res); + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + SilcChannelEntry channel = NULL; + SilcID id; + + SILC_LOG_DEBUG(("Notify: JOIN")); + + /* Get Channel ID */ + if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Get channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; + + /* Get Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Find Client entry and if not found query it */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0] || + !client_entry->username[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + + if (client_entry != conn->local_entry) + silc_client_nickname_format(client, conn, client_entry); + + /* Join the client to channel */ + silc_client_add_to_channel(channel, client_entry, 0); + + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, channel); + + silc_client_unref_client(client, conn, client_entry); + + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; } -/* Function that starts waiting for the `cmd_ident' to arrive and - marks the channel info being resolved. */ +/********************************** LEAVE ***********************************/ + +/* Someone left a channel */ -static void silc_client_channel_set_wait(SilcClient client, - SilcClientConnection conn, - SilcChannelEntry channel, - SilcUInt16 cmd_ident) +SILC_FSM_STATE(silc_client_notify_leave) { - SilcClientNotifyResolve res; + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcChannelEntry channel = NULL; + SilcChannelUser chu; + SilcID id; + + SILC_LOG_DEBUG(("Notify: LEAVE")); + + /* Get channel entry */ + if (!silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + goto out; + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; + + /* Get Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry) + goto out; - if (!channel->resolve_cmd_ident) { - res = silc_calloc(1, sizeof(*res)); + /* Remove client from channel */ + chu = silc_client_on_channel(channel, client_entry); + if (chu) { + silc_hash_table_del(client_entry->channels, channel); + silc_hash_table_del(channel->user_list, client_entry); + silc_free(chu); + } + +#if 0 /* Kind of useless, server will return error if client keeps using + non-existing client, and the entry is removed then. */ + /* Some client implementations actually quit network by first doing + LEAVE and then immediately SIGNOFF. We'll check for this by doing + check for the client after 5 - 34 seconds. If it is not valid after + that we'll remove the client from cache. */ + if (!silc_hash_table_count(client_entry->channels)) { + SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); res->context = client; res->sock = silc_socket_dup(conn->sock); - res->packet = silc_id_dup(channel->id, SILC_ID_CHANNEL); - silc_client_command_pending(conn, SILC_COMMAND_NONE, cmd_ident, - silc_client_channel_cond, res); - channel->resolve_cmd_ident = cmd_ident; + res->packet = silc_id_dup(client_id, SILC_ID_CLIENT); + silc_schedule_task_add(client->schedule, conn->sock->sock, + silc_client_notify_check_client, res, + (5 + (silc_rng_get_rn16(client->rng) % 29)), + 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL); } +#endif + + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, channel); + + silc_client_unref_client(client, conn, client_entry); + + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; } -/* Attaches to the channel's resolving cmd ident and calls the - notify handling with `packet' after it's received. */ +/********************************* SIGNOFF **********************************/ + +/* Someone quit SILC network */ -static void silc_client_channel_wait(SilcClient client, - SilcClientConnection conn, - SilcChannelEntry channel, - SilcPacketContext *packet) +SILC_FSM_STATE(silc_client_notify_signoff) { - SilcClientNotifyResolve res; + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; - if (!channel->resolve_cmd_ident) - return; + SILC_LOG_DEBUG(("Notify: SIGNOFF")); - res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); + /* Get Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - silc_client_command_pending(conn, SILC_COMMAND_NONE, - channel->resolve_cmd_ident, - silc_client_notify_by_server_pending, res); + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry) + goto out; + + /* Get signoff message */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (tmp_len > 128) + tmp[128] = '\0'; + + /* Notify application */ + NOTIFY(client, conn, type, client_entry, tmp); + + /* Remove from all channels */ + silc_client_remove_from_channels(client, conn, client_entry); + +#if 0 + /* Remove from cache */ + silc_idcache_del_by_context(conn->internal->client_cache, client_entry); +#endif + + /* Free data */ + silc_client_unref_client(client, conn, client_entry); + silc_client_del_client_entry(client, conn, client_entry); + + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; } -/* Resolve client, channel or server information. */ +/******************************** TOPIC_SET *********************************/ -static void silc_client_notify_by_server_resolve(SilcClient client, - SilcClientConnection conn, - SilcPacketContext *packet, - SilcIdType id_type, - void *id) +/* Someone set topic on a channel */ + +SILC_FSM_STATE(silc_client_notify_topic_set) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - SilcBuffer idp = silc_id_payload_encode(id, id_type); - - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - - /* For client resolving use WHOIS, and otherwise use IDENTIFY */ - if (id_type == SILC_ID_CLIENT) { - silc_client_command_register(client, SILC_COMMAND_WHOIS, NULL, NULL, - silc_client_command_reply_whois_i, 0, - ++conn->cmd_ident); - silc_client_command_send(client, conn, SILC_COMMAND_WHOIS, conn->cmd_ident, - 1, 4, idp->data, idp->len); - silc_client_command_pending(conn, SILC_COMMAND_WHOIS, conn->cmd_ident, - silc_client_notify_by_server_pending, res); + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcChannelEntry channel = NULL, channel_entry = NULL; + SilcServerEntry server = NULL; + void *entry; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; + + SILC_LOG_DEBUG(("Notify: TOPIC_SET")); + + /* Get channel entry */ + if (!silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + goto out; + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; + + /* Get ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* Get topic */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) + goto out; + + if (id.type == SILC_ID_CLIENT) { + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = client_entry; + } else if (id.type == SILC_ID_SERVER) { + /* Find Server entry */ + server = silc_client_get_server_by_id(client, conn, &id.u.server_id); + if (!server) { + /** Resolve server */ + SILC_FSM_CALL(silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = server; } else { - silc_client_command_register(client, SILC_COMMAND_IDENTIFY, NULL, NULL, - silc_client_command_reply_identify_i, 0, - ++conn->cmd_ident); - silc_client_command_send(client, conn, SILC_COMMAND_IDENTIFY, - conn->cmd_ident, 1, 5, idp->data, idp->len); - silc_client_command_pending(conn, SILC_COMMAND_IDENTIFY, conn->cmd_ident, - silc_client_notify_by_server_pending, res); + /* Find Channel entry */ + channel_entry = silc_client_get_channel_by_id(client, conn, + &id.u.channel_id); + if (!channel_entry) { + /** Resolve channel */ + SILC_FSM_CALL(silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = channel_entry; } - silc_buffer_free(idp); + + silc_free(channel->topic); + channel->topic = silc_memdup(tmp, strlen(tmp)); + + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, channel->topic, channel); + + if (client_entry) + silc_client_unref_client(client, conn, client_entry); + if (server) + silc_client_unref_server(client, conn, server); + if (channel_entry) + silc_client_unref_channel(client, conn, channel_entry); + + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; } -/* Received notify message from server */ +/****************************** NICK_CHANGE *********************************/ -void silc_client_notify_by_server(SilcClient client, - SilcSocketConnection sock, - SilcPacketContext *packet) +/* Someone changed their nickname on a channel */ + +SILC_FSM_STATE(silc_client_notify_nick_change) { - SilcBuffer buffer = packet->buffer; - SilcClientConnection conn = (SilcClientConnection)sock->user_data; - SilcNotifyPayload payload; - SilcNotifyType type; - SilcArgumentPayload args; - - void *id; - SilcIdType id_type; - SilcClientID *client_id = NULL; - SilcChannelID *channel_id = NULL; - SilcServerID *server_id = NULL; + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); SilcClientEntry client_entry = NULL; - SilcClientEntry client_entry2 = NULL; - SilcChannelEntry channel; - SilcChannelUser chu; - SilcServerEntry server; - unsigned char *tmp; - SilcUInt32 tmp_len, mode; + unsigned char *tmp, *nick, oldnick[128 + 1]; + SilcUInt32 tmp_len; + SilcID id; - SILC_LOG_DEBUG(("Start")); + SILC_LOG_DEBUG(("Notify: NICK_CHANGE")); - payload = silc_notify_payload_parse(buffer->data, buffer->len); - if (!payload) + /* Get ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) goto out; - type = silc_notify_get_type(payload); - args = silc_notify_get_args(payload); - if (!args) + /* Ignore my ID */ + if (conn->local_id && + SILC_ID_CLIENT_COMPARE(&id.u.client_id, conn->local_id)) goto out; - switch(type) { - case SILC_NOTIFY_TYPE_NONE: - /* Notify application */ - client->internal->ops->notify(client, conn, type, - silc_argument_get_arg_type(args, 1, NULL)); - break; + /* Find old Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } - case SILC_NOTIFY_TYPE_INVITE: - /* - * Someone invited me to a channel. Find Client and Channel entries - * for the application. - */ + /* Get new Client ID */ + if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - SILC_LOG_DEBUG(("Notify: INVITE")); + /* Take the new nickname */ + tmp = silc_argument_get_arg_type(args, 3, &tmp_len); + if (!tmp) + goto out; - /* Get Channel ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* Check whether nickname changed at all. It is possible that nick + change notify is received but nickname didn't change, only the + ID changes. If Client ID hash match, nickname didn't change. */ + if (SILC_ID_COMPARE_HASH(&client_entry->id, &id.u.client_id) && + silc_utf8_strcasecmp(tmp, client_entry->nickname)) { + /* Nickname didn't change. Update only Client ID. We don't notify + application because nickname didn't change. */ + silc_idcache_update(conn->internal->client_cache, client_entry, + &client_entry->id, &id.u.client_id, NULL, NULL, FALSE); + goto out; + } - channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!channel_id) - goto out; + /* Normalize nickname */ + nick = silc_identifier_check(tmp, tmp_len, SILC_STRING_UTF8, 128, NULL); + if (!nick) + goto out; - /* Get the channel entry */ - channel = silc_client_get_channel_by_id(client, conn, channel_id); + /* Update nickname */ + if (!silc_idcache_update(conn->internal->client_cache, client_entry, + NULL, NULL, client_entry->nickname_normalized, + nick, TRUE)) { + silc_free(nick); + goto out; + } + memcpy(oldnick, client_entry->nickname, sizeof(client_entry->nickname)); + memcpy(client_entry->nickname, tmp, tmp_len); + client_entry->nickname_normalized = nick; + silc_client_nickname_format(client, conn, client_entry); - /* Get sender Client ID */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (!tmp) - goto out; + /* Notify application */ + NOTIFY(client, conn, type, client_entry, client_entry->nickname, oldnick); - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + out: + /** Notify processed */ + silc_client_unref_client(client, conn, client_entry); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Find Client entry and if not found query it */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } +/****************************** CMODE_CHANGE ********************************/ - /* Get the channel name */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; +/* Someone changed channel mode */ - /* Notify application */ - client->internal->ops->notify(client, conn, type, channel, tmp, - client_entry); - break; +SILC_FSM_STATE(silc_client_notify_cmode_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcChannelEntry channel = NULL, channel_entry = NULL; + SilcServerEntry server = NULL; + void *entry; + unsigned char *tmp; + SilcUInt32 tmp_len, mode; + SilcID id; + char *passphrase, *cipher, *hmac; + SilcPublicKey founder_key = NULL; + SilcDList chpks = NULL; - case SILC_NOTIFY_TYPE_JOIN: - /* - * Someone has joined to a channel. Get their ID and nickname and - * cache them for later use. - */ + SILC_LOG_DEBUG(("Notify: CMODE_CHANGE")); - SILC_LOG_DEBUG(("Notify: JOIN")); + /* Get channel entry */ + if (!silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + goto out; + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; - /* Get Channel ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + /* Get the mode */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) + goto out; + SILC_GET32_MSB(mode, tmp); - channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!channel_id) - goto out; + /* Get ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* Get channel entry */ - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - break; + if (id.type == SILC_ID_CLIENT) { + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = client_entry; + } else if (id.type == SILC_ID_SERVER) { + /* Find Server entry */ + server = silc_client_get_server_by_id(client, conn, &id.u.server_id); + if (!server) { + /** Resolve server */ + SILC_FSM_CALL(silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = server; + } else { + /* Find Channel entry */ + channel_entry = silc_client_get_channel_by_id(client, conn, + &id.u.channel_id); + if (!channel_entry) { + /** Resolve channel */ + SILC_FSM_CALL(silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = channel_entry; + } - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) + /* Get the channel founder key if it was set */ + tmp = silc_argument_get_arg_type(args, 6, &tmp_len); + if (tmp) { + if (!silc_public_key_payload_decode(tmp, tmp_len, &founder_key)) goto out; + if (!channel->founder_key) { + channel->founder_key = founder_key; + founder_key = NULL; + } + } - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + /* Get the cipher */ + cipher = silc_argument_get_arg_type(args, 3, &tmp_len); - /* Find Client entry and if not found query it */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } + /* Get the hmac */ + hmac = silc_argument_get_arg_type(args, 4, &tmp_len); + if (hmac) { + unsigned char hash[SILC_HASH_MAXLEN]; + SilcHmac newhmac; - /* If nickname or username hasn't been resolved, do so */ - if (!client_entry->nickname || !client_entry->username) { - if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) { - /* Attach to existing resolving */ - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - client_entry->resolve_cmd_ident, - silc_client_notify_by_server_pending, - res); - goto out; - } - - /* Do new resolving */ - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - client_entry->status |= SILC_CLIENT_STATUS_RESOLVING; - client_entry->resolve_cmd_ident = conn->cmd_ident; + if (!silc_hmac_alloc(hmac, NULL, &newhmac)) goto out; - } else { - if (client_entry != conn->local_entry) - silc_client_nickname_format(client, conn, client_entry); - } - /* If information is being resolved for this channel, wait for it */ - if (channel->resolve_cmd_ident) { - silc_client_channel_wait(client, conn, channel, packet); - goto out; + /* Get HMAC key from the old HMAC context, and update it to the new one */ + tmp = (unsigned char *)silc_hmac_get_key(channel->internal.hmac, &tmp_len); + if (tmp) { + silc_hash_make(silc_hmac_get_hash(newhmac), tmp, tmp_len, hash); + silc_hmac_set_key(newhmac, hash, + silc_hash_len(silc_hmac_get_hash(newhmac))); + if (channel->internal.hmac) + silc_hmac_free(channel->internal.hmac); + channel->internal.hmac = newhmac; + memset(hash, 0, sizeof(hash)); } + } - /* Join the client to channel */ - if (!silc_client_on_channel(channel, client_entry)) { - chu = silc_calloc(1, sizeof(*chu)); - chu->client = client_entry; - chu->channel = channel; - silc_hash_table_add(channel->user_list, client_entry, chu); - silc_hash_table_add(client_entry->channels, channel, chu); - } + /* Get the passphrase if it was set */ + passphrase = silc_argument_get_arg_type(args, 5, &tmp_len); - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, client_entry, channel); - break; + /* Get user limit */ + tmp = silc_argument_get_arg_type(args, 8, &tmp_len); + if (tmp && tmp_len == 4) + SILC_GET32_MSB(channel->user_limit, tmp); + if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) + channel->user_limit = 0; - case SILC_NOTIFY_TYPE_LEAVE: - /* - * Someone has left a channel. We will remove it from the channel but - * we'll keep it in the cache in case we'll need it later. - */ + /* Save the new mode */ + channel->mode = mode; - SILC_LOG_DEBUG(("Notify: LEAVE")); + /* Get the channel public key that was added or removed */ + tmp = silc_argument_get_arg_type(args, 7, &tmp_len); + if (tmp) + chpks = silc_argument_list_parse_decoded(tmp, tmp_len, + SILC_ARGUMENT_PUBLIC_KEY); - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, mode, cipher, hmac, + passphrase, channel->founder_key, chpks, channel); - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + out: + if (founder_key) + silc_pkcs_public_key_free(founder_key); + if (chpks) + silc_argument_list_free(chpks, SILC_ARGUMENT_PUBLIC_KEY); + if (client_entry) + silc_client_unref_client(client, conn, client_entry); + if (server) + silc_client_unref_server(client, conn, server); + if (channel_entry) + silc_client_unref_channel(client, conn, channel_entry); + silc_client_unref_channel(client, conn, channel); + + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; +/***************************** CUMODE_CHANGE ********************************/ - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - break; +/* Someone changed a user's mode on a channel */ - /* Remove client from channel */ - chu = silc_client_on_channel(channel, client_entry); - if (chu) { - silc_hash_table_del(client_entry->channels, channel); - silc_hash_table_del(channel->user_list, client_entry); - silc_free(chu); - } +SILC_FSM_STATE(silc_client_notify_cumode_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL, client_entry2 = NULL; + SilcChannelEntry channel = NULL, channel_entry = NULL; + SilcServerEntry server = NULL; + SilcChannelUser chu; + void *entry; + unsigned char *tmp; + SilcUInt32 tmp_len, mode; + SilcID id, id2; + + SILC_LOG_DEBUG(("Notify: CUMODE_CHANGE")); + + /* Get channel entry */ + if (!silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + goto out; + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; - /* Some client implementations actually quit network by first doing - LEAVE and then immediately SIGNOFF. We'll check for this by doing - check for the client after 5 - 34 seconds. If it is not valid after - that we'll remove the client from cache. */ - if (!silc_hash_table_count(client_entry->channels)) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - res->packet = silc_id_dup(client_id, SILC_ID_CLIENT); - silc_schedule_task_add(client->schedule, conn->sock->sock, - silc_client_notify_check_client, res, - (5 + (silc_rng_get_rn16(client->rng) % 29)), - 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL); + /* Get the mode */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) + goto out; + SILC_GET32_MSB(mode, tmp); + + /* Get ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + if (id.type == SILC_ID_CLIENT) { + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = client_entry; + } else if (id.type == SILC_ID_SERVER) { + /* Find Server entry */ + server = silc_client_get_server_by_id(client, conn, &id.u.server_id); + if (!server) { + /** Resolve server */ + SILC_FSM_CALL(silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ } + entry = server; + } else { + /* Find Channel entry */ + channel_entry = silc_client_get_channel_by_id(client, conn, + &id.u.channel_id); + if (!channel_entry) { + /** Resolve channel */ + SILC_FSM_CALL(silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = channel_entry; + } - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, client_entry, channel); - break; + /* Get target Client ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id2, NULL)) + goto out; - case SILC_NOTIFY_TYPE_SIGNOFF: - /* - * Someone left SILC. We'll remove it from all channels and from cache. - */ + /* Find target Client entry */ + client_entry2 = silc_client_get_client_by_id(client, conn, &id2.u.client_id); + if (!client_entry2 || !client_entry2->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id2.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } - SILC_LOG_DEBUG(("Notify: SIGNOFF")); + /* Save the mode */ + chu = silc_client_on_channel(channel, client_entry2); + if (chu) + chu->mode = mode; - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, mode, client_entry2, channel); - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + out: + silc_client_unref_client(client, conn, client_entry2); + if (client_entry) + silc_client_unref_client(client, conn, client_entry); + if (server) + silc_client_unref_server(client, conn, server); + if (channel_entry) + silc_client_unref_channel(client, conn, channel_entry); + silc_client_unref_channel(client, conn, channel); + + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; +/********************************* MOTD *************************************/ - /* Get signoff message */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (tmp_len > 128) - tmp = NULL; +/* Received Message of the day */ - /* Notify application */ - client->internal->ops->notify(client, conn, type, client_entry, tmp); +SILC_FSM_STATE(silc_client_notify_motd) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + unsigned char *tmp; + SilcUInt32 tmp_len; - /* Remove from all channels */ - silc_client_remove_from_channels(client, conn, client_entry); + SILC_LOG_DEBUG(("Notify: MOTD")); - /* Remove from cache */ - silc_idcache_del_by_context(conn->internal->client_cache, client_entry); + /* Get motd */ + tmp = silc_argument_get_arg_type(args, 1, &tmp_len); + if (!tmp) + goto out; - /* Free data */ - silc_client_del_client_entry(client, conn, client_entry); - break; + /* Notify application */ + NOTIFY(client, conn, type, tmp); - case SILC_NOTIFY_TYPE_TOPIC_SET: - /* - * Someone set the topic on a channel. - */ + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - SILC_LOG_DEBUG(("Notify: TOPIC_SET")); +/**************************** CHANNEL CHANGE ********************************/ - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - break; +/* Router has enforced a new ID to a channel, change it */ - /* Get ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - id = silc_id_payload_parse_id(tmp, tmp_len, &id_type); - if (!id) - goto out; +SILC_FSM_STATE(silc_client_notify_channel_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcChannelEntry channel = NULL; + SilcID id; + + SILC_LOG_DEBUG(("Notify: CHANNEL_CHANGE")); + + /* Get the old ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* Find Client entry */ - if (id_type == SILC_ID_CLIENT) { - /* Find Client entry */ - client_id = id; - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } - } else if (id_type == SILC_ID_SERVER) { - /* Find Server entry */ - server_id = id; - server = silc_client_get_server_by_id(client, conn, server_id); - if (!server) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_SERVER, server_id); - server = silc_client_add_server(client, conn, NULL, NULL, server_id); - if (!server) - goto out; - - server->resolve_cmd_ident = conn->cmd_ident; - server_id = NULL; - goto out; - } - - /* If entry being resoled, wait for it before processing this notify */ - if (server->resolve_cmd_ident) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - server->resolve_cmd_ident, - silc_client_notify_by_server_pending, res); - goto out; - } - - /* Save the pointer to the client_entry pointer */ - client_entry = (SilcClientEntry)server; - } else { - /* Find Channel entry */ - silc_free(channel_id); - channel_id = id; - client_entry = (SilcClientEntry) - silc_client_get_channel_by_id(client, conn, channel_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CHANNEL, channel_id); - goto out; - } - } + /* Get the channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; - /* Get topic */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + /* Get the new ID */ + if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* If information is being resolved for this channel, wait for it */ - if (channel->resolve_cmd_ident) { - silc_client_channel_wait(client, conn, channel, packet); - goto out; - } + /* Replace the Channel ID */ + if (!silc_client_replace_channel_id(client, conn, channel, &id.u.channel_id)) + goto out; - if (tmp) { - silc_free(channel->topic); - channel->topic = silc_memdup(tmp, strlen(tmp)); - } + /* Notify application */ + NOTIFY(client, conn, type, channel, channel); - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, id_type, - client_entry, tmp, channel); + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - break; +/******************************** KICKED ************************************/ - case SILC_NOTIFY_TYPE_NICK_CHANGE: - /* - * Someone changed their nickname. If we don't have entry for the new - * ID we will query it and return here after it's done. After we've - * returned we fetch the old entry and free it and notify the - * application. - */ - - SILC_LOG_DEBUG(("Notify: NICK_CHANGE")); - - /* Get old Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; +/* Some client was kicked from a channel */ - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; +SILC_FSM_STATE(silc_client_notify_kicked) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry, client_entry2; + SilcChannelEntry channel = NULL; + SilcChannelUser chu; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; - /* Ignore my ID */ - if (conn->local_id && SILC_ID_CLIENT_COMPARE(client_id, conn->local_id)) - break; + SILC_LOG_DEBUG(("Notify: KICKED")); - /* Find old Client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; - silc_free(client_id); - client_id = NULL; - - /* Wait for resolving if necessary */ - if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - client_entry->resolve_cmd_ident, - silc_client_notify_by_server_pending, res); - goto out; - } + /* Get Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - client_entry->valid = FALSE; + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry) + goto out; - /* Get new Client ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + /* Get channel entry */ + if (!silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + goto out; + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + /* Get kicker's Client ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* Take the nickname */ - tmp = silc_argument_get_arg_type(args, 3, NULL); - if (!tmp) - goto out; + /* Find kicker's client entry and if not found resolve it */ + client_entry2 = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry2 || !client_entry2->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + + /* Get comment */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - /* Check whether nickname changed at all. It is possible that nick - change notify is received but nickname didn't change, only the - ID changes. Check whether the hashes in the Client ID match, if - they do nickname didn't change. */ - if (SILC_ID_COMPARE_HASH(client_entry->id, client_id) && - silc_utf8_strcasecmp(tmp, client_entry->nickname)) { - /* Nickname didn't change. Update only Client ID. */ - - /* Normalize nickname */ - tmp = silc_identifier_check(tmp, strlen(tmp), - SILC_STRING_UTF8, 128, NULL); - if (!tmp) - goto out; - - silc_idcache_del_by_context(conn->internal->client_cache, - client_entry); - silc_free(client_entry->id); - client_entry->id = silc_id_dup(client_id, SILC_ID_CLIENT); - silc_idcache_add(conn->internal->client_cache, tmp, - client_entry->id, client_entry, 0, NULL); - - /* Notify application */ - client->internal->ops->notify(client, conn, type, - client_entry, client_entry); - break; + /* Remove kicked client from channel */ + if (client_entry != conn->local_entry) { + chu = silc_client_on_channel(channel, client_entry); + if (chu) { + silc_hash_table_del(client_entry->channels, channel); + silc_hash_table_del(channel->user_list, client_entry); + silc_free(chu); } + } - /* Create new client entry, and save all old information with the - new nickname and client ID */ - client_entry2 = silc_client_add_client(client, conn, NULL, NULL, - client_entry->realname, - silc_id_dup(client_id, - SILC_ID_CLIENT), 0); - if (!client_entry2) - goto out; + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, tmp, client_entry2, channel); - if (client_entry->server) - client_entry2->server = strdup(client_entry->server); - if (client_entry->username) - client_entry2->username = strdup(client_entry->username); - if (client_entry->hostname) - client_entry2->hostname = strdup(client_entry->hostname); - client_entry2->fingerprint = client_entry->fingerprint; - client_entry2->fingerprint_len = client_entry->fingerprint_len; - client_entry->fingerprint = NULL; - client_entry->fingerprint_len = 0; - silc_client_update_client(client, conn, client_entry2, tmp, NULL, NULL, - client_entry->mode); - - /* Remove the old from cache */ - silc_idcache_del_by_context(conn->internal->client_cache, client_entry); - - /* Replace old ID entry with new one on all channels. */ - silc_client_replace_from_channels(client, conn, client_entry, - client_entry2); - - /* Notify application */ - client->internal->ops->notify(client, conn, type, - client_entry, client_entry2); - - /* Free old client entry */ - silc_client_del_client_entry(client, conn, client_entry); + /* If I was kicked from channel, remove the channel */ + if (client_entry == conn->local_entry) { + if (conn->current_channel == channel) + conn->current_channel = NULL; + silc_client_del_channel(client, conn, channel); + } - break; + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); - case SILC_NOTIFY_TYPE_CMODE_CHANGE: - { - /* - * Someone changed a channel mode - */ - char *passphrase, *cipher, *hmac; - SilcPublicKey founder_key = NULL; - SilcBufferStruct chpks; - - SILC_LOG_DEBUG(("Notify: CMODE_CHANGE")); - - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - goto out; - - /* Get ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - id = silc_id_payload_parse_id(tmp, tmp_len, &id_type); - if (!id) - goto out; - - /* Find Client entry */ - if (id_type == SILC_ID_CLIENT) { - /* Find Client entry */ - client_id = id; - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } - - if (!client_entry->nickname) { - if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) { - /* Attach to existing resolving */ - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - client_entry->resolve_cmd_ident, - silc_client_notify_by_server_pending, - res); - goto out; - } - - /* Do new resolving */ - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - client_entry->status |= SILC_CLIENT_STATUS_RESOLVING; - client_entry->resolve_cmd_ident = conn->cmd_ident; - goto out; - } - } else if (id_type == SILC_ID_SERVER) { - /* Find Server entry */ - server_id = id; - server = silc_client_get_server_by_id(client, conn, server_id); - if (!server) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_SERVER, server_id); - server = silc_client_add_server(client, conn, NULL, NULL, server_id); - if (!server) - goto out; - - server->resolve_cmd_ident = conn->cmd_ident; - server_id = NULL; - goto out; - } - - /* If entry being resoled, wait for it before processing this notify */ - if (server->resolve_cmd_ident) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - server->resolve_cmd_ident, - silc_client_notify_by_server_pending, - res); - goto out; - } - - /* Save the pointer to the client_entry pointer */ - client_entry = (SilcClientEntry)server; - } else { - /* Find Channel entry */ - silc_free(channel_id); - channel_id = id; - client_entry = (SilcClientEntry) - silc_client_get_channel_by_id(client, conn, channel_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CHANNEL, channel_id); - goto out; - } - } - - /* Get the mode */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; - - SILC_GET32_MSB(mode, tmp); - - /* If information is being resolved for this channel, wait for it */ - if (channel->resolve_cmd_ident) { - silc_client_channel_wait(client, conn, channel, packet); - goto out; - } - - /* Save the new mode */ - channel->mode = mode; - - /* Get the cipher */ - cipher = silc_argument_get_arg_type(args, 3, &tmp_len); - - /* Get the hmac */ - hmac = silc_argument_get_arg_type(args, 4, &tmp_len); - if (hmac) { - unsigned char hash[SILC_HASH_MAXLEN]; - - if (channel->hmac) - silc_hmac_free(channel->hmac); - if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) - goto out; - - silc_hash_make(silc_hmac_get_hash(channel->hmac), - channel->key, channel->key_len / 8, - hash); - silc_hmac_set_key(channel->hmac, hash, - silc_hash_len(silc_hmac_get_hash(channel->hmac))); - memset(hash, 0, sizeof(hash)); - } - - /* Get the passphrase if it was set */ - passphrase = silc_argument_get_arg_type(args, 5, &tmp_len); - - /* Get the channel founder key if it was set */ - tmp = silc_argument_get_arg_type(args, 6, &tmp_len); - if (tmp) { - if (!silc_pkcs_public_key_payload_decode(tmp, tmp_len, &founder_key)) - founder_key = NULL; - } - - /* Get user limit */ - tmp = silc_argument_get_arg_type(args, 8, &tmp_len); - if (tmp && tmp_len == 4) - SILC_GET32_MSB(channel->user_limit, tmp); - if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) - channel->user_limit = 0; - - /* Get the channel public key that was added or removed */ - tmp = silc_argument_get_arg_type(args, 7, &tmp_len); - if (tmp) - silc_buffer_set(&chpks, tmp, tmp_len); - - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, id_type, - client_entry, mode, cipher, hmac, - passphrase, founder_key, - tmp ? &chpks : NULL, channel); - - if (founder_key) - silc_pkcs_public_key_free(founder_key); - } - break; + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - case SILC_NOTIFY_TYPE_CUMODE_CHANGE: - /* - * Someone changed user's mode on a channel - */ +/******************************** KILLED ************************************/ - SILC_LOG_DEBUG(("Notify: CUMODE_CHANGE")); +/* Some client was killed from the network */ - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - break; +SILC_FSM_STATE(silc_client_notify_killed) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL, client_entry2 = NULL; + SilcChannelEntry channel_entry = NULL; + SilcServerEntry server = NULL; + void *entry; + char *comment; + SilcUInt32 comment_len; + SilcID id; + + SILC_LOG_DEBUG(("Notify: KILLED")); + + /* Get Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* Get ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - id = silc_id_payload_parse_id(tmp, tmp_len, &id_type); - if (!id) - goto out; + /* Find Client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry) + goto out; + + /* Get comment */ + comment = silc_argument_get_arg_type(args, 2, &comment_len); + /* Get killer's ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + if (id.type == SILC_ID_CLIENT) { /* Find Client entry */ - if (id_type == SILC_ID_CLIENT) { - /* Find Client entry */ - client_id = id; - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } - - if (!client_entry->nickname) { - if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) { - /* Attach to existing resolving */ - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - client_entry->resolve_cmd_ident, - silc_client_notify_by_server_pending, - res); - goto out; - } - - /* Do new resolving */ - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - client_entry->status |= SILC_CLIENT_STATUS_RESOLVING; - client_entry->resolve_cmd_ident = conn->cmd_ident; - goto out; - } - } else if (id_type == SILC_ID_SERVER) { - /* Find Server entry */ - server_id = id; - server = silc_client_get_server_by_id(client, conn, server_id); - if (!server) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_SERVER, server_id); - server = silc_client_add_server(client, conn, NULL, NULL, server_id); - if (!server) - goto out; - - server->resolve_cmd_ident = conn->cmd_ident; - server_id = NULL; - goto out; - } - - /* If entry being resoled, wait for it before processing this notify */ - if (server->resolve_cmd_ident) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - server->resolve_cmd_ident, - silc_client_notify_by_server_pending, res); - goto out; - } - - /* Save the pointer to the client_entry pointer */ - client_entry = (SilcClientEntry)server; - } else { - /* Find Channel entry */ - silc_free(channel_id); - channel_id = id; - client_entry = (SilcClientEntry) - silc_client_get_channel_by_id(client, conn, channel_id); - if (!client_entry) { - silc_client_channel_set_wait(client, conn, channel, - conn->cmd_ident + 1); - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CHANNEL, channel_id); - goto out; - } + client_entry2 = silc_client_get_client_by_id(client, conn, + &id.u.client_id); + if (!client_entry2 || !client_entry2->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ } + entry = client_entry2; + } else if (id.type == SILC_ID_SERVER) { + /* Find Server entry */ + server = silc_client_get_server_by_id(client, conn, &id.u.server_id); + if (!server) { + /** Resolve server */ + SILC_FSM_CALL(silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = server; + } else { + /* Find Channel entry */ + channel_entry = silc_client_get_channel_by_id(client, conn, + &id.u.channel_id); + if (!channel_entry) { + /** Resolve channel */ + SILC_FSM_CALL(silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } + entry = channel_entry; + } - /* Get the mode */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; - - SILC_GET32_MSB(mode, tmp); + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, comment, id.type, entry); - /* If information is being resolved for this channel, wait for it */ - if (channel->resolve_cmd_ident) { - silc_client_channel_wait(client, conn, channel, packet); - goto out; - } + /* Delete the killed client */ + if (client_entry != conn->local_entry) + silc_client_del_client(client, conn, client_entry); - /* Get target Client ID */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (!tmp) - goto out; + out: + silc_client_unref_client(client, conn, client_entry); + if (client_entry2) + silc_client_unref_client(client, conn, client_entry2); + if (server) + silc_client_unref_server(client, conn, server); + if (channel_entry) + silc_client_unref_channel(client, conn, channel_entry); + + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - silc_free(client_id); - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; +/**************************** SERVER SIGNOFF ********************************/ - /* Find target Client entry */ - client_entry2 = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry2) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } +/* Some server quit SILC network. Remove its clients from channels. */ - /* Save the mode */ - chu = silc_client_on_channel(channel, client_entry2); - if (chu) - chu->mode = mode; - - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, - id_type, client_entry, mode, - client_entry2, channel); - break; +SILC_FSM_STATE(silc_client_notify_server_signoff) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + SilcDList clients; + SilcID id; + int i; - case SILC_NOTIFY_TYPE_MOTD: - /* - * Received Message of the day - */ + SILC_LOG_DEBUG(("Notify: SIGNOFF")); - SILC_LOG_DEBUG(("Notify: MOTD")); + clients = silc_dlist_init(); + if (!clients) + goto out; - /* Get motd */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) + for (i = 1; i < silc_argument_get_arg_num(args); i++) { + /* Get Client ID */ + if (!silc_argument_get_decoded(args, i + 1, SILC_ARGUMENT_ID, &id, NULL)) goto out; - /* Notify application */ - client->internal->ops->notify(client, conn, type, tmp); - break; + /* Get the client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (client_entry) + silc_dlist_add(clients, client_entry); + } - case SILC_NOTIFY_TYPE_CHANNEL_CHANGE: - /* - * Router has enforced a new ID to a channel. Let's change the old - * ID to the one provided here. - */ + /* Notify application. We don't keep server entries so the server + entry is returned as NULL. The client's are returned as list. */ + NOTIFY(client, conn, type, NULL, clients); - SILC_LOG_DEBUG(("Notify: CHANNEL_CHANGE")); + /* Delete the clients */ + silc_dlist_start(clients); + while ((client_entry = silc_dlist_get(clients))) + silc_client_del_client(client, conn, client_entry); - /* Get the old ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!channel_id) - goto out; + out: + /** Notify processed */ + silc_client_list_free(client, conn, clients); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Get the channel entry */ - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - goto out; +/******************************** ERROR *************************************/ - silc_free(channel_id); - channel_id = NULL; +/* Some error occurred */ - /* Get the new ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; - channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!channel_id) +SILC_FSM_STATE(silc_client_notify_error) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; + SilcStatus error; + + /* Get error */ + tmp = silc_argument_get_arg_type(args, 1, &tmp_len); + if (!tmp && tmp_len != 1) + goto out; + error = (SilcStatus)tmp[0]; + + SILC_LOG_DEBUG(("Notify: ERROR (%d)", error)); + + /* Handle the error */ + if (error == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) { + if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL)) goto out; + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (client_entry) { + silc_client_del_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry); + } + } - /* Replace the Channel ID */ - if (silc_client_replace_channel_id(client, conn, channel, channel_id)) - channel_id = NULL; + /* Notify application. */ + NOTIFY(client, conn, type, error); - /* Notify application */ - client->internal->ops->notify(client, conn, type, channel, channel); - break; + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - case SILC_NOTIFY_TYPE_KICKED: - /* - * A client (maybe me) was kicked from a channel - */ +/******************************** WATCH *************************************/ - SILC_LOG_DEBUG(("Notify: KICKED")); +/* Received notify about some client we are watching */ - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; +SILC_FSM_STATE(silc_client_notify_watch) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcPacket packet = state_context; + SilcNotifyPayload payload = (SilcNotifyPayload)packet->next; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcNotifyType notify = 0; + SilcBool del_client = FALSE; + unsigned char *pk, *tmp; + SilcUInt32 mode, pk_len, tmp_len; + SilcPublicKey public_key = NULL; + SilcID id; - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; + SILC_LOG_DEBUG(("Notify: WATCH")); - /* Find Client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; + /* Get sender Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) - break; + /* Find Client entry and if not found resolve it */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->nickname[0]) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + SILC_FSM_CALL(silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + fsm)); + /* NOT REACHED */ + } - /* From protocol version 1.1 we get the kicker's client ID as well */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (tmp) { - silc_free(client_id); - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; - - /* Find kicker's client entry and if not found resolve it */ - client_entry2 = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry2) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } else { - if (client_entry2 != conn->local_entry) - silc_client_nickname_format(client, conn, client_entry2); - } - } + /* Get user mode */ + tmp = silc_argument_get_arg_type(args, 3, &tmp_len); + if (!tmp || tmp_len != 4) + goto out; + SILC_GET32_MSB(mode, tmp); - /* Get comment */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - - /* Remove kicked client from channel */ - if (client_entry != conn->local_entry) { - chu = silc_client_on_channel(channel, client_entry); - if (chu) { - silc_hash_table_del(client_entry->channels, channel); - silc_hash_table_del(channel->user_list, client_entry); - silc_free(chu); - } - } + /* Get notify type */ + tmp = silc_argument_get_arg_type(args, 4, &tmp_len); + if (tmp && tmp_len != 2) + goto out; + if (tmp) + SILC_GET16_MSB(notify, tmp); + + /* Get nickname */ + tmp = silc_argument_get_arg_type(args, 2, NULL); + if (tmp) { + char *tmp_nick = NULL; + + if (client->internal->params->nickname_parse) + client->internal->params->nickname_parse(client_entry->nickname, + &tmp_nick); + else + tmp_nick = strdup(tmp); + + /* If same nick, the client was new to us and has become "present" + to network. Send NULL as nick to application. */ + if (tmp_nick && silc_utf8_strcasecmp(tmp, tmp_nick)) + tmp = NULL; - /* Notify application. The channel entry is sent last as this notify - is for channel but application don't know it from the arguments - sent by server. */ - client->internal->ops->notify(client, conn, type, client_entry, tmp, - client_entry2, channel); - - /* Remove kicked client (us) from channel */ - if (client_entry == conn->local_entry) { - /* If I was kicked from channel, remove the channel */ - if (conn->current_channel == channel) - conn->current_channel = NULL; - silc_client_del_channel(client, conn, channel); - } else { - if (!silc_hash_table_count(client_entry->channels)) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - res->packet = silc_id_dup(client_entry->id, SILC_ID_CLIENT); - silc_schedule_task_add(client->schedule, conn->sock->sock, - silc_client_notify_check_client, res, - (5 + (silc_rng_get_rn16(client->rng) % 529)), - 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL); - } - } - break; + silc_free(tmp_nick); + } - case SILC_NOTIFY_TYPE_KILLED: - { - /* - * A client (maybe me) was killed from the network. - */ - char *comment; - SilcUInt32 comment_len; - - SILC_LOG_DEBUG(("Notify: KILLED")); - - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; - - /* Find Client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; - - /* Get comment */ - comment = silc_argument_get_arg_type(args, 2, &comment_len); - - /* From protocol version 1.1 we get killer's client ID as well */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (tmp) { - silc_free(client_id); - client_id = NULL; - id = silc_id_payload_parse_id(tmp, tmp_len, &id_type); - if (!id) - goto out; - - /* Find Client entry */ - if (id_type == SILC_ID_CLIENT) { - /* Find Client entry */ - client_id = id; - client_entry2 = silc_client_get_client_by_id(client, conn, - client_id); - if (!client_entry) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } - } else if (id_type == SILC_ID_SERVER) { - /* Find Server entry */ - server_id = id; - server = silc_client_get_server_by_id(client, conn, server_id); - if (!server) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_SERVER, server_id); - server = silc_client_add_server(client, conn, NULL, NULL, - server_id); - if (!server) - goto out; - - server->resolve_cmd_ident = conn->cmd_ident; - server_id = NULL; - goto out; - } - - if (server->resolve_cmd_ident) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->packet = silc_packet_context_dup(packet); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - silc_client_command_pending(conn, SILC_COMMAND_NONE, - server->resolve_cmd_ident, - silc_client_notify_by_server_pending, - res); - goto out; - } - - /* Save the pointer to the client_entry pointer */ - client_entry2 = (SilcClientEntry)server; - } else { - /* Find Channel entry */ - channel_id = id; - channel = silc_client_get_channel_by_id(client, conn, channel_id); - if (!channel) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CHANNEL, channel_id); - goto out; - } - - /* Save the pointer to the client_entry pointer */ - client_entry2 = (SilcClientEntry)channel; - silc_free(channel_id); - channel_id = NULL; - } - } - - /* Notify application. */ - client->internal->ops->notify(client, conn, type, client_entry, - comment, id_type, client_entry2); - - if (client_entry != conn->local_entry) - /* Remove the client from all channels and free it */ - silc_client_del_client(client, conn, client_entry); + /* Get public key, if present */ + pk = silc_argument_get_arg_type(args, 5, &pk_len); + if (pk && !client_entry->public_key) { + if (silc_public_key_payload_decode(pk, pk_len, &public_key)) { + client_entry->public_key = public_key; + public_key = NULL; } - break; + } - case SILC_NOTIFY_TYPE_SERVER_SIGNOFF: - { - /* - * A server quit the SILC network and some clients must be removed - * from channels as they quit as well. - */ - SilcClientEntry *clients = NULL; - SilcUInt32 clients_count = 0; - int i; - - SILC_LOG_DEBUG(("Notify: SIGNOFF")); - - for (i = 1; i < silc_argument_get_arg_num(args); i++) { - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, i + 1, &tmp_len); - if (tmp) { - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; - - /* Get the client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (client_entry) { - clients = silc_realloc(clients, sizeof(*clients) * - (clients_count + 1)); - clients[clients_count] = client_entry; - clients_count++; - } - silc_free(client_id); - } - } - client_id = NULL; - - /* Notify application. We don't keep server entries so the server - entry is returned as NULL. The client's are returned as array - of SilcClientEntry pointers. */ - client->internal->ops->notify(client, conn, type, NULL, - clients, clients_count); - - for (i = 0; i < clients_count; i++) { - /* Remove client from all channels */ - client_entry = clients[i]; - if (client_entry == conn->local_entry) - continue; - - /* Remove the client from all channels and free it */ - silc_client_del_client(client, conn, client_entry); - } - silc_free(clients); + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, tmp, mode, notify, + client_entry->public_key); - } - break; + client_entry->mode = mode; - case SILC_NOTIFY_TYPE_ERROR: - { - /* - * Some has occurred and server is notifying us about it. - */ - SilcStatus error; - - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp && tmp_len != 1) - goto out; - error = (SilcStatus)tmp[0]; - - SILC_LOG_DEBUG(("Notify: ERROR (%d)", error)); - - if (error == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) { - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (tmp) { - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; - client_entry = silc_client_get_client_by_id(client, conn, - client_id); - if (client_entry) - silc_client_del_client(client, conn, client_entry); - } - } - - /* Notify application. */ - client->internal->ops->notify(client, conn, type, error); - } - break; + /* If nickname was changed, remove the client entry unless the + client is on some channel */ + /* XXX, why do we need to remove the client entry?? */ + if (tmp && notify == SILC_NOTIFY_TYPE_NICK_CHANGE && + !silc_hash_table_count(client_entry->channels)) + del_client = TRUE; + else if (notify == SILC_NOTIFY_TYPE_SIGNOFF || + notify == SILC_NOTIFY_TYPE_SERVER_SIGNOFF || + notify == SILC_NOTIFY_TYPE_KILLED) + del_client = TRUE; - case SILC_NOTIFY_TYPE_WATCH: - { - /* - * Received notify about some client we are watching - */ - SilcNotifyType notify = 0; - SilcBool del_client = FALSE; - unsigned char *pk; - SilcUInt32 pk_len; - SilcPublicKey public_key = NULL; - - SILC_LOG_DEBUG(("Notify: WATCH")); - - /* Get sender Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL); - if (!client_id) - goto out; - - /* Find Client entry and if not found query it */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) { - silc_client_notify_by_server_resolve(client, conn, packet, - SILC_ID_CLIENT, client_id); - goto out; - } - - /* Get user mode */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (!tmp || tmp_len != 4) - goto out; - SILC_GET32_MSB(mode, tmp); - - /* Get notify type */ - tmp = silc_argument_get_arg_type(args, 4, &tmp_len); - if (tmp && tmp_len != 2) - goto out; - if (tmp) - SILC_GET16_MSB(notify, tmp); - - /* Get nickname */ - tmp = silc_argument_get_arg_type(args, 2, NULL); - if (tmp) { - char *tmp_nick = NULL; - - if (client->internal->params->nickname_parse) - client->internal->params->nickname_parse(client_entry->nickname, - &tmp_nick); - else - tmp_nick = strdup(tmp); - - /* If same nick, the client was new to us and has become "present" - to network. Send NULL as nick to application. */ - if (tmp_nick && silc_utf8_strcasecmp(tmp, tmp_nick)) - tmp = NULL; - - silc_free(tmp_nick); - } - - /* Get public key, if present */ - pk = silc_argument_get_arg_type(args, 5, &pk_len); - if (pk && !client_entry->public_key) { - if (silc_pkcs_public_key_payload_decode(pk, pk_len, &public_key)) { - client_entry->public_key = public_key; - public_key = NULL; - } - } - - /* Notify application. */ - client->internal->ops->notify(client, conn, type, client_entry, - tmp, mode, notify, - client_entry->public_key); - - client_entry->mode = mode; - - /* If nickname was changed, remove the client entry unless the - client is on some channel */ - if (tmp && notify == SILC_NOTIFY_TYPE_NICK_CHANGE && - !silc_hash_table_count(client_entry->channels)) - del_client = TRUE; - else if (notify == SILC_NOTIFY_TYPE_SIGNOFF || - notify == SILC_NOTIFY_TYPE_SERVER_SIGNOFF || - notify == SILC_NOTIFY_TYPE_KILLED) - del_client = TRUE; - - if (del_client) { - SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res)); - res->context = client; - res->sock = silc_socket_dup(conn->sock); - res->packet = client_id; - client_id = NULL; - silc_schedule_task_add(client->schedule, conn->sock->sock, - silc_client_notify_del_client_cb, res, - 1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL); - } - - silc_pkcs_public_key_free(public_key); - } - break; + if (del_client) + silc_client_del_client(client, conn, client_entry); - default: - break; - } + if (public_key) + silc_pkcs_public_key_free(public_key); out: - silc_notify_payload_free(payload); - silc_free(client_id); - silc_free(channel_id); - silc_free(server_id); + /** Notify processed */ + silc_client_unref_client(client, conn, client_entry); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; }