X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=lib%2Fsilcclient%2Fclient_notify.c;h=2ccb574c1ac8a384d7fd6a36939e8a0c5b097e52;hb=805fddcf6431e784f9f77114782a90c9d12f9cbe;hp=d1668cae208d21dd6b99a92940ff4de875faf9ba;hpb=183d9fe2d3a82778e110490a74425776743e74b4;p=silc.git diff --git a/lib/silcclient/client_notify.c b/lib/silcclient/client_notify.c index d1668cae..2ccb574c 100644 --- a/lib/silcclient/client_notify.c +++ b/lib/silcclient/client_notify.c @@ -2,15 +2,14 @@ client_notify.c - Author: Pekka Riikonen + Author: Pekka Riikonen - Copyright (C) 1997 - 2001 Pekka Riikonen + Copyright (C) 1997 - 2008 Pekka Riikonen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - + the Free Software Foundation; version 2 of the License. + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the @@ -18,676 +17,1605 @@ */ /* $Id$ */ -/* This file includes the Notify packet handling. Notify packets are - important packets sent by the server. They tell different things to the - client such as nick changes, mode changes etc. */ -#include "clientlibincludes.h" +#include "silc.h" +#include "silcclient.h" #include "client_internal.h" -/* 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. */ +/************************** Types and definitions ***************************/ + +#define NOTIFY conn->client->internal->ops->notify + +/* Notify processing context */ +typedef struct { + SilcPacket packet; /* Notify packet */ + SilcNotifyPayload payload; /* Parsed notify payload */ + SilcFSMThread fsm; /* Notify FSM thread */ + SilcChannelEntry channel; /* Channel entry being resolved */ + SilcClientEntry client_entry; /* Client entry being resolved */ + SilcUInt32 resolve_retry; /* Resolving retry counter */ +} *SilcClientNotify; + +/************************ Static utility functions **************************/ + +/* The client entires in notify processing are resolved if they do not exist, + or they are not valid. We go to this callback after resolving where we + check if the client entry has become valid. If resolving succeeded the + entry is valid but remains invalid if resolving failed. This callback + will continue processing the notify. We use this callback also with other + entry resolving. */ + +static void silc_client_notify_resolved(SilcClient client, + SilcClientConnection conn, + SilcStatus status, + SilcDList entries, + void *context) +{ + SilcClientNotify notify = context; + + /* If entry is still invalid, resolving failed. Finish notify processing. */ + if (notify->client_entry && !notify->client_entry->internal.valid) { + /* If resolving timedout try it again many times. */ + if (status != SILC_STATUS_ERR_TIMEDOUT || ++notify->resolve_retry > 1000) { + silc_fsm_next(notify->fsm, silc_client_notify_processed); + + /* Unref client only in case of non-timeout error. In case of timeout + occurred, the routine reprocessing the notify is expected not to + create new references of the entry. */ + silc_client_unref_client(client, conn, notify->client_entry); + } + } + + /* If no entries found, just finish the notify processing */ + if (!entries && !notify->client_entry) + silc_fsm_next(notify->fsm, silc_client_notify_processed); + + if (notify->channel) { + notify->channel->internal.resolve_cmd_ident = 0; + silc_client_unref_channel(client, conn, notify->channel); + } + + /* Continue processing the notify */ + SILC_FSM_CALL_CONTINUE_SYNC(notify->fsm); +} + +/* Continue notify processing after it was suspended while waiting for + channel information being resolved. */ -static void silc_client_notify_by_server_pending(void *context) +static SilcBool silc_client_notify_wait_continue(SilcClient client, + SilcClientConnection conn, + SilcCommand command, + SilcStatus status, + SilcStatus error, + void *context, + va_list ap) { - SilcPacketContext *p = (SilcPacketContext *)context; - silc_client_notify_by_server(p->context, p->sock, p); + SilcClientNotify notify = context; + + /* Continue after last command reply received */ + if (SILC_STATUS_IS_ERROR(status) || status == SILC_STATUS_OK || + status == SILC_STATUS_LIST_END) + SILC_FSM_CALL_CONTINUE_SYNC(notify->fsm); + + return TRUE; } -/* Destructor for the pending command callback */ +/********************************* Notify ***********************************/ + +/* Process received notify packet */ -static void silc_client_notify_by_server_destructor(void *context) +SILC_FSM_STATE(silc_client_notify) { - silc_packet_context_free((SilcPacketContext *)context); + SilcPacket packet = state_context; + SilcClientNotify notify; + 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 %d", silc_notify_get_type(payload))); + silc_notify_payload_free(payload); + silc_packet_free(packet); + return SILC_FSM_FINISH; + } + + notify = silc_calloc(1, sizeof(*notify)); + if (!notify) { + silc_notify_payload_free(payload); + silc_packet_free(packet); + return SILC_FSM_FINISH; + } + + notify->packet = packet; + notify->payload = payload; + notify->fsm = fsm; + silc_fsm_set_state_context(fsm, notify); + + /* 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); + silc_free(notify); + return SILC_FSM_FINISH; + break; + } + + return SILC_FSM_CONTINUE; } -/* Resolve client information from server by Client ID. */ +/* Notify processed, finish the packet processing thread */ -static void silc_client_notify_by_server_resolve(SilcClient client, - SilcClientConnection conn, - SilcPacketContext *packet, - SilcClientID *client_id) +SILC_FSM_STATE(silc_client_notify_processed) { - SilcPacketContext *p = silc_packet_context_dup(packet); - SilcBuffer idp = silc_id_payload_encode(client_id, SILC_ID_CLIENT); - - p->context = (void *)client; - p->sock = conn->sock; - - silc_client_send_command(client, conn, SILC_COMMAND_WHOIS, ++conn->cmd_ident, - 1, 3, idp->data, idp->len); - silc_client_command_pending(conn, SILC_COMMAND_WHOIS, conn->cmd_ident, - silc_client_notify_by_server_destructor, - silc_client_notify_by_server_pending, p); - silc_buffer_free(idp); + SilcClientNotify notify = state_context; + SilcPacket packet = notify->packet; + SilcNotifyPayload payload = notify->payload; + + silc_notify_payload_free(payload); + silc_packet_free(packet); + silc_free(notify); + return SILC_FSM_FINISH; } -/* Received notify message from server */ +/********************************** NONE ************************************/ -void silc_client_notify_by_server(SilcClient client, - SilcSocketConnection sock, - SilcPacketContext *packet) +SILC_FSM_STATE(silc_client_notify_none) { - SilcBuffer buffer = packet->buffer; - SilcClientConnection conn = (SilcClientConnection)sock->user_data; - SilcNotifyPayload payload; - SilcNotifyType type; - SilcArgumentPayload args; + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); - SilcClientID *client_id = NULL; - SilcChannelID *channel_id = NULL; + SILC_LOG_DEBUG(("Notify: NONE")); + + /* 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 ***********************************/ + +/* Someone invite me to a channel */ + +SILC_FSM_STATE(silc_client_notify_invite) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); SilcClientEntry client_entry; - SilcClientEntry client_entry2; - SilcChannelEntry channel; - SilcChannelUser chu; - SilcIDCacheEntry id_cache = NULL; + SilcChannelEntry channel = NULL; unsigned char *tmp; - unsigned int tmp_len, mode; + SilcUInt32 tmp_len; + SilcID id; + + SILC_LOG_DEBUG(("Notify: INVITE")); - payload = silc_notify_payload_parse(buffer); - if (!payload) + /* Get Channel 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) + /* Get the channel name */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) goto out; - switch(type) { - case SILC_NOTIFY_TYPE_NONE: - /* Notify application */ - client->ops->notify(client, conn, type, - silc_argument_get_arg_type(args, 1, NULL)); - break; + /* Get the channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) { + /** Resolve channel */ + SILC_FSM_CALL(silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } - case SILC_NOTIFY_TYPE_INVITE: - /* - * Someone invited me to a channel. Find Client and Channel entries - * for the application. - */ - - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* 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, client_id); - if (!client_entry) { - silc_client_notify_by_server_resolve(client, conn, packet, client_id); - 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->internal.valid) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } - /* Get Channel ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + /* Notify application */ + NOTIFY(client, conn, type, channel, tmp, client_entry); - channel_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!channel_id) - goto out; + silc_client_unref_client(client, conn, client_entry); - /* XXX Will ALWAYS fail because currently we don't have way to resolve - channel information for channel that we're not joined to. */ - /* XXX ways to fix: use (extended) LIST command, or define the channel - name to the notfy type when name resolving is not mandatory. */ - /* Find channel entry */ - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - goto out; + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - channel = (SilcChannelEntry)id_cache->context; +/********************************** JOIN ************************************/ - /* Notify application */ - client->ops->notify(client, conn, type, client_entry, channel); - break; +/* Someone joined a channel */ - case SILC_NOTIFY_TYPE_JOIN: - /* - * Someone has joined to a channel. Get their ID and nickname and - * cache them for later use. - */ +SILC_FSM_STATE(silc_client_notify_join) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + SilcChannelEntry channel = NULL; + SilcID id; - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + SILC_LOG_DEBUG(("Notify: JOIN")); - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* Get Channel ID */ + if (!silc_argument_get_decoded(args, 2, 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, client_id); + /* Get channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; + + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } + + /* 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. If we just queried it + don't do it again, unless some data (like username) is missing. */ + client_entry = notify->client_entry; + if (!client_entry) + client_entry = silc_client_get_client(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->internal.valid || + !client_entry->username[0]) { + /** Resolve client */ + notify->channel = channel; + notify->client_entry = client_entry; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, client_entry ? + &client_entry->id : &id.u.client_id, + NULL, silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + + silc_rwlock_wrlock(client_entry->internal.lock); + silc_rwlock_wrlock(channel->internal.lock); + + if (client_entry != conn->local_entry) + silc_client_nickname_format(client, conn, client_entry, FALSE); + + /* Join the client to channel */ + if (!silc_client_add_to_channel(client, conn, channel, client_entry, 0)) { + silc_rwlock_unlock(channel->internal.lock); + silc_rwlock_unlock(client_entry->internal.lock); + goto out; + } + + silc_rwlock_unlock(channel->internal.lock); + silc_rwlock_unlock(client_entry->internal.lock); + + /* 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; +} + +/********************************** LEAVE ***********************************/ + +/* Someone left a channel */ + +SILC_FSM_STATE(silc_client_notify_leave) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcChannelEntry channel = NULL; + 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; + + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } + + /* 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; + + /* Remove client from channel */ + if (!silc_client_remove_from_channel(client, conn, channel, client_entry)) + goto out; + + /* 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; +} + +/********************************* SIGNOFF **********************************/ + +/* Someone quit SILC network */ + +SILC_FSM_STATE(silc_client_notify_signoff) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + 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: SIGNOFF")); + + /* 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; + + /* Get signoff message */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (tmp && tmp_len > 128) + tmp[128] = '\0'; + + if (packet->dst_id_type == SILC_ID_CHANNEL) + if (silc_id_str2id(packet->dst_id, packet->dst_id_len, SILC_ID_CHANNEL, + &id.u.channel_id, sizeof(id.u.channel_id))) + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + + /* Notify application */ + if (client_entry->internal.valid) + NOTIFY(client, conn, type, client_entry, tmp, channel); + + /* Remove from channel */ + if (channel) { + silc_client_remove_from_channel(client, conn, channel, client_entry); + silc_client_unref_channel(client, conn, channel); + } + + /* Delete client */ + client_entry->internal.valid = FALSE; + silc_client_del_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry); + + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} + +/******************************** TOPIC_SET *********************************/ + +/* Someone set topic on a channel */ + +SILC_FSM_STATE(silc_client_notify_topic_set) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + 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; + + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } + + /* Get ID of topic changer */ + 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 = notify->client_entry; if (!client_entry) { - silc_client_notify_by_server_resolve(client, conn, packet, client_id); - goto out; + client_entry = silc_client_get_client(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->internal.valid) { + /** Resolve client */ + notify->channel = channel; + notify->client_entry = client_entry; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } } - /* If nickname or username hasn't been resolved, do so */ - if (!client_entry->nickname || !client_entry->username) { - silc_client_notify_by_server_resolve(client, conn, packet, client_id); + /* If client is not on channel, ignore this notify */ + if (!silc_client_on_channel(channel, client_entry)) goto out; + + 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + notify)); + /* 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + entry = channel_entry; + } - /* Get Channel ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + silc_rwlock_wrlock(channel->internal.lock); + silc_free(channel->topic); + channel->topic = silc_memdup(tmp, strlen(tmp)); + silc_rwlock_unlock(channel->internal.lock); - channel_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!channel_id) - goto out; + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, channel->topic, channel); - /* Get channel entry */ - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; + 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); - channel = (SilcChannelEntry)id_cache->context; + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Add client to channel */ - if (client_entry != conn->local_entry) { - chu = silc_calloc(1, sizeof(*chu)); - chu->client = client_entry; - silc_list_add(channel->clients, chu); - } +/****************************** NICK_CHANGE *********************************/ - /* XXX add support for multiple same nicks on same channel. Check - for them here */ +/* Someone changed their nickname on a 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->ops->notify(client, conn, type, client_entry, channel); - break; +SILC_FSM_STATE(silc_client_notify_nick_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + unsigned char *tmp, oldnick[256 + 1]; + SilcUInt32 tmp_len; + SilcID id, id2; + SilcBool valid; + + SILC_LOG_DEBUG(("Notify: NICK_CHANGE")); + + /* Get ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - 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. - */ - - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* Ignore my ID */ + if (conn->local_id && + SILC_ID_CLIENT_COMPARE(&id.u.client_id, conn->local_id)) + goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* Get new Client ID */ + if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id2, NULL)) + goto out; + + /* Ignore my ID */ + if (conn->local_id && + SILC_ID_CLIENT_COMPARE(&id2.u.client_id, conn->local_id)) + goto out; + + /* Find old client entry. If we don't have the entry, we ignore this + notify. */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (!client_entry) + goto out; + valid = client_entry->internal.valid; + + /* Take the new nickname */ + tmp = silc_argument_get_arg_type(args, 3, &tmp_len); + if (!tmp) + goto out; + + silc_rwlock_wrlock(client_entry->internal.lock); + + /* 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, &id2.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_mutex_lock(conn->internal->lock); + silc_idcache_update_by_context(conn->internal->client_cache, client_entry, + &id2.u.client_id, NULL, FALSE); + silc_mutex_unlock(conn->internal->lock); + silc_rwlock_unlock(client_entry->internal.lock); + goto out; + } + + /* Change the nickname */ + memcpy(oldnick, client_entry->nickname, sizeof(client_entry->nickname)); + if (!silc_client_change_nickname(client, conn, client_entry, tmp, + &id2.u.client_id, NULL, 0)) { + silc_rwlock_unlock(client_entry->internal.lock); + goto out; + } + + silc_rwlock_unlock(client_entry->internal.lock); + + /* Notify application, if client entry is valid. We do not send nick change + notify for entries that were invalid (application doesn't know them). */ + if (valid) + NOTIFY(client, conn, type, client_entry, oldnick, client_entry->nickname); + + out: + /** Notify processed */ + silc_client_unref_client(client, conn, client_entry); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} + +/****************************** CMODE_CHANGE ********************************/ +/* Someone changed channel mode */ + +SILC_FSM_STATE(silc_client_notify_cmode_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + 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; + + SILC_LOG_DEBUG(("Notify: CMODE_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; + + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } + + /* Get the mode */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) + goto out; + SILC_GET32_MSB(mode, tmp); + + /* Get ID of who changed the mode */ + 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, client_id); - if (!client_entry) + client_entry = notify->client_entry; + if (!client_entry) { + client_entry = silc_client_get_client(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->internal.valid) { + /** Resolve client */ + notify->channel = channel; + notify->client_entry = client_entry; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + } + + /* If client is not on channel, ignore this notify */ + if (!silc_client_on_channel(channel, client_entry)) goto out; - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) + 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + notify)); + /* 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + entry = channel_entry; + } + + silc_rwlock_wrlock(channel->internal.lock); + + /* 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)) { + silc_rwlock_unlock(channel->internal.lock); goto out; - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; - - channel = (SilcChannelEntry)id_cache->context; - - /* Remove client from channel */ - silc_list_start(channel->clients); - while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) { - if (chu->client == client_entry) { - silc_list_del(channel->clients, chu); - silc_free(chu); - break; - } } + if (!channel->founder_key) { + channel->founder_key = founder_key; + founder_key = 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->ops->notify(client, conn, type, client_entry, channel); - break; + /* Get the cipher */ + cipher = silc_argument_get_arg_type(args, 3, &tmp_len); - case SILC_NOTIFY_TYPE_SIGNOFF: - /* - * Someone left SILC. We'll remove it from all channels and from cache. - */ + /* Get the hmac */ + hmac = silc_argument_get_arg_type(args, 4, &tmp_len); + if (hmac) { + unsigned char hash[SILC_HASH_MAXLEN]; + SilcHmac newhmac; - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) + if (!silc_hmac_alloc(hmac, NULL, &newhmac)) { + silc_rwlock_unlock(channel->internal.lock); goto out; + } - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - 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)); + } + } - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; + /* Get the passphrase if it was set */ + passphrase = silc_argument_get_arg_type(args, 5, &tmp_len); - /* Remove from all channels */ - silc_client_remove_from_channels(client, conn, client_entry); + /* 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; - /* Remove from cache */ - silc_idcache_del_by_id(conn->client_cache, SILC_ID_CLIENT, - client_entry->id); + /* Get the channel public key that was added or removed */ + tmp = silc_argument_get_arg_type(args, 7, &tmp_len); + if (tmp) + silc_client_channel_save_public_keys(channel, tmp, tmp_len, FALSE); + else if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH) + silc_client_channel_save_public_keys(channel, NULL, 0, TRUE); - /* Get signoff message */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (tmp_len > 128) - tmp = NULL; + /* Save the new mode */ + channel->mode = mode; - /* Notify application */ - client->ops->notify(client, conn, type, client_entry, tmp); - - /* Free data */ - if (client_entry->nickname) - silc_free(client_entry->nickname); - if (client_entry->server) - silc_free(client_entry->server); - if (client_entry->id) - silc_free(client_entry->id); - if (client_entry->send_key) - silc_cipher_free(client_entry->send_key); - if (client_entry->receive_key) - silc_cipher_free(client_entry->receive_key); - break; + silc_rwlock_unlock(channel->internal.lock); - case SILC_NOTIFY_TYPE_TOPIC_SET: - /* - * Someone set the topic on a channel. - */ + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, mode, cipher, hmac, + passphrase, channel->founder_key, chpks, channel); - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - 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; +} - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; +/***************************** CUMODE_CHANGE ********************************/ - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; +/* Someone changed a user's mode on a channel */ - /* Get topic */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; +SILC_FSM_STATE(silc_client_notify_cumode_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + 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; - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; + SILC_LOG_DEBUG(("Notify: CUMODE_CHANGE")); - channel = (SilcChannelEntry)id_cache->context; + /* 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; - /* 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->ops->notify(client, conn, type, client_entry, tmp, channel); - break; + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } - 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. - */ - - /* Get old Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + /* Get target Client ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id2, NULL)) + goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* Find target Client entry */ + client_entry2 = silc_client_get_client_by_id(client, conn, &id2.u.client_id); + if (!client_entry2 || !client_entry2->internal.valid) { + /** Resolve client */ + 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, + notify)); + /* NOT REACHED */ + } - /* Ignore my ID */ - if (!SILC_ID_CLIENT_COMPARE(client_id, conn->local_id)) - break; + /* If target client is not on channel, ignore this notify */ + if (!silc_client_on_channel(channel, client_entry2)) + goto out; - /* 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); + /* Get the mode */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + if (!tmp) + goto out; + SILC_GET32_MSB(mode, tmp); - /* Get new Client ID */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; + /* Get ID of mode changer */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + if (id.type == SILC_ID_CLIENT) { + /* Find Client entry */ + client_entry = notify->client_entry; + if (!client_entry) { + client_entry = silc_client_get_client(client, conn, &id.u.client_id); + if (!client_entry || !client_entry->internal.valid) { + /** Resolve client */ + notify->channel = channel; + notify->client_entry = client_entry; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + } - /* Find 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, client_id); + /* If client is not on channel, ignore this notify */ + if (!silc_client_on_channel(channel, client_entry)) goto out; + + 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_server_by_id_resolve( + client, conn, &id.u.server_id, + silc_client_notify_resolved, + notify)); + /* 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 */ + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_channel_by_id_resolve( + client, conn, &id.u.channel_id, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ } + entry = channel_entry; + } - /* Remove the old from cache */ - silc_idcache_del_by_id(conn->client_cache, SILC_ID_CLIENT, - client_entry->id); - - /* Replace old ID entry with new one on all channels. */ - silc_client_replace_from_channels(client, conn, client_entry, - client_entry2); - - /* Notify application */ - client->ops->notify(client, conn, type, client_entry, client_entry2); - - /* Free data */ - if (client_entry->nickname) - silc_free(client_entry->nickname); - if (client_entry->server) - silc_free(client_entry->server); - if (client_entry->id) - silc_free(client_entry->id); - if (client_entry->send_key) - silc_cipher_free(client_entry->send_key); - if (client_entry->receive_key) - silc_cipher_free(client_entry->receive_key); - silc_free(client_entry); - break; + /* Save the mode */ + silc_rwlock_wrlock(channel->internal.lock); + chu = silc_client_on_channel(channel, client_entry2); + if (chu) + chu->mode = mode; + silc_rwlock_unlock(channel->internal.lock); - case SILC_NOTIFY_TYPE_CMODE_CHANGE: - /* - * Someone changed a channel mode - */ + /* Notify application. */ + NOTIFY(client, conn, type, id.type, entry, mode, client_entry2, channel); - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - 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; +} - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; +/********************************* MOTD *************************************/ - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; +/* Received Message of the day */ - /* Get the mode */ - tmp = silc_argument_get_arg_type(args, 2, &tmp_len); - if (!tmp) - goto out; +SILC_FSM_STATE(silc_client_notify_motd) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + unsigned char *tmp; + SilcUInt32 tmp_len; - SILC_GET32_MSB(mode, tmp); + SILC_LOG_DEBUG(("Notify: MOTD")); - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) - goto out; - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; + /* Get motd */ + tmp = silc_argument_get_arg_type(args, 1, &tmp_len); + if (!tmp) + goto out; - channel = (SilcChannelEntry)id_cache->context; + /* Notify application */ + NOTIFY(client, conn, type, tmp); - /* Save the new mode */ - channel->mode = mode; + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* 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->ops->notify(client, conn, type, client_entry, mode, channel); - break; +/**************************** CHANNEL CHANGE ********************************/ - case SILC_NOTIFY_TYPE_CUMODE_CHANGE: - /* - * Someone changed user's mode on a channel - */ +/* Router has enforced a new ID to a channel, change it */ - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; +SILC_FSM_STATE(silc_client_notify_channel_change) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + 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; - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* Get the channel entry */ + channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id); + if (!channel) + goto out; - /* Find Client entry */ - client_entry = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } - /* Get the mode */ - 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; - SILC_GET32_MSB(mode, tmp); + /* Replace the Channel ID */ + if (!silc_client_replace_channel_id(client, conn, channel, &id.u.channel_id)) + goto out; - /* Get target Client ID */ - tmp = silc_argument_get_arg_type(args, 3, &tmp_len); - if (!tmp) - goto out; + /* Notify application */ + NOTIFY(client, conn, type, channel, channel); - silc_free(client_id); - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - /* Find target Client entry */ - client_entry2 = - silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry2) - goto out; +/******************************** KICKED ************************************/ + +/* Some client was kicked from a channel */ + +SILC_FSM_STATE(silc_client_notify_kicked) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcPacket packet = notify->packet; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry, client_entry2; + SilcChannelEntry channel = NULL; + unsigned char *tmp; + SilcUInt32 tmp_len; + SilcID id; - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) + SILC_LOG_DEBUG(("Notify: KICKED")); + + /* 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; + + /* If channel is being resolved handle notify after resolving */ + if (channel->internal.resolve_cmd_ident) { + silc_client_unref_channel(client, conn, channel); + SILC_FSM_CALL(silc_client_command_pending( + conn, SILC_COMMAND_NONE, + channel->internal.resolve_cmd_ident, + silc_client_notify_wait_continue, + notify)); + /* NOT REACHED */ + } + + /* Get the kicked 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; + + /* Get kicker's Client ID */ + if (!silc_argument_get_decoded(args, 3, SILC_ARGUMENT_ID, &id, NULL)) + 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->internal.valid) { + /** Resolve client */ + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); + notify->channel = channel; + SILC_FSM_CALL(channel->internal.resolve_cmd_ident = + silc_client_get_client_by_id_resolve( + client, conn, &id.u.client_id, NULL, + silc_client_notify_resolved, + notify)); + /* NOT REACHED */ + } + + /* Get comment */ + tmp = silc_argument_get_arg_type(args, 2, &tmp_len); + + /* Remove kicked client from channel */ + if (client_entry != conn->local_entry) { + if (!silc_client_remove_from_channel(client, conn, channel, client_entry)) goto out; - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; - - channel = (SilcChannelEntry)id_cache->context; - - /* Save the mode */ - silc_list_start(channel->clients); - while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) { - if (chu->client == client_entry) { - chu->mode = mode; - break; - } + } + + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, tmp, client_entry2, channel); + + /* 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_empty_channel(client, conn, channel); + silc_client_del_channel(client, conn, channel); + } + + silc_client_unref_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry2); + + out: + /** Notify processed */ + silc_client_unref_channel(client, conn, channel); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} + +/******************************** KILLED ************************************/ + +/* Some client was killed from the network */ + +SILC_FSM_STATE(silc_client_notify_killed) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + 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; + + /* 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 */ + client_entry2 = silc_client_get_client_by_id(client, conn, + &id.u.client_id); + if (!client_entry2 || !client_entry2->internal.valid) { + /** 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, + notify)); + /* 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, + notify)); + /* 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, + notify)); + /* 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->ops->notify(client, conn, type, client_entry, mode, - client_entry2, channel); - break; + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, comment, id.type, entry); - case SILC_NOTIFY_TYPE_MOTD: - /* - * Received Message of the day - */ + /* Delete the killed client */ + if (client_entry != conn->local_entry) { + silc_client_remove_from_channels(client, conn, client_entry); + client_entry->internal.valid = FALSE; + silc_client_del_client(client, conn, client_entry); + } - /* Get motd */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; - - /* Notify application */ - client->ops->notify(client, conn, type, tmp); - break; + 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; +} - 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. - */ - - /* 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); - if (!channel_id) - goto out; - - /* Get the channel entry */ - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; +/**************************** SERVER SIGNOFF ********************************/ - channel = (SilcChannelEntry)id_cache->context; +/* Some server quit SILC network. Remove its clients from channels. */ - /* Free the old ID */ - silc_free(channel_id); - silc_free(channel->id); +SILC_FSM_STATE(silc_client_notify_server_signoff) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry; + SilcServerEntry server_entry = NULL; + SilcDList clients; + SilcID id; + int i; - /* 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); - if (!channel->id) - goto out; + SILC_LOG_DEBUG(("Notify: SERVER_SIGNOFF")); - id_cache->id = (void *)channel->id; + clients = silc_dlist_init(); + if (!clients) + goto out; - /* Notify application */ - client->ops->notify(client, conn, type, channel, channel); - break; + /* Get server ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; - case SILC_NOTIFY_TYPE_KICKED: - /* - * A client (maybe me) was kicked from a channel - */ + /* Get server, in case we have it cached */ + server_entry = silc_client_get_server_by_id(client, conn, &id.u.server_id); + for (i = 1; i < silc_argument_get_arg_num(args); i++) { /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) + if (!silc_argument_get_decoded(args, i + 1, SILC_ARGUMENT_ID, &id, NULL)) goto out; - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; + /* Get the client entry */ + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (client_entry && client_entry->internal.valid) + silc_dlist_add(clients, client_entry); + } - /* Find Client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; + /* Notify application. */ + NOTIFY(client, conn, type, server_entry, clients); + + /* Delete the clients */ + silc_dlist_start(clients); + while ((client_entry = silc_dlist_get(clients))) { + silc_client_remove_from_channels(client, conn, client_entry); + client_entry->internal.valid = FALSE; + silc_client_del_client(client, conn, client_entry); + } + + out: + /** Notify processed */ + silc_client_unref_server(client, conn, server_entry); + silc_client_list_free(client, conn, clients); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} + +/******************************** ERROR *************************************/ + +/* Some error occurred */ - /* Get channel entry */ - channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len, - SILC_ID_CHANNEL); - if (!channel_id) +SILC_FSM_STATE(silc_client_notify_error) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + 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; - if (!silc_idcache_find_by_id_one(conn->channel_cache, (void *)channel_id, - SILC_ID_CHANNEL, &id_cache)) - break; - - channel = (SilcChannelEntry)id_cache->context; - - /* Get comment */ - tmp = silc_argument_get_arg_type(args, 2, &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->ops->notify(client, conn, type, client_entry, tmp, channel); - - /* 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_idcache_del_by_id(conn->channel_cache, - SILC_ID_CHANNEL, channel->id); - silc_free(channel->channel_name); - silc_free(channel->id); - silc_free(channel->key); - silc_cipher_free(channel->channel_key); - silc_free(channel); + client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id); + if (client_entry && client_entry != conn->local_entry) { + silc_client_remove_from_channels(client, conn, client_entry); + silc_client_del_client(client, conn, client_entry); + silc_client_unref_client(client, conn, client_entry); } - break; + } - case SILC_NOTIFY_TYPE_KILLED: - /* - * A client (maybe me) was killed from the network. - */ + /* Notify application. */ + NOTIFY(client, conn, type, error); - /* Get Client ID */ - tmp = silc_argument_get_arg_type(args, 1, &tmp_len); - if (!tmp) - goto out; + out: + /** Notify processed */ + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; +} - client_id = silc_id_payload_parse_id(tmp, tmp_len); - if (!client_id) - goto out; +/******************************** WATCH *************************************/ - /* Find Client entry */ - client_entry = silc_client_get_client_by_id(client, conn, client_id); - if (!client_entry) - goto out; +/* Received notify about some client we are watching */ + +SILC_FSM_STATE(silc_client_notify_watch) +{ + SilcClientConnection conn = fsm_context; + SilcClient client = conn->client; + SilcClientNotify notify = state_context; + SilcNotifyPayload payload = notify->payload; + SilcNotifyType type = silc_notify_get_type(payload); + SilcArgumentPayload args = silc_notify_get_args(payload); + SilcClientEntry client_entry = NULL; + SilcNotifyType ntype = 0; + unsigned char *pk, *tmp; + SilcUInt32 mode, pk_len, tmp_len; + SilcPublicKey public_key = NULL; + SilcID id; + + SILC_LOG_DEBUG(("Notify: WATCH")); + + /* Get sender Client ID */ + if (!silc_argument_get_decoded(args, 1, SILC_ARGUMENT_ID, &id, NULL)) + goto out; + + /* 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->internal.valid) { + /** 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, + notify)); + /* NOT REACHED */ + } + + /* 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(ntype, tmp); + + /* Get nickname */ + tmp = silc_argument_get_arg_type(args, 2, NULL); + if (tmp) { + char *tmp_nick = NULL; + + silc_client_nickname_parse(client, conn, client_entry->nickname, + &tmp_nick); - /* Get comment */ - tmp = silc_argument_get_arg_type(args, 2, &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->ops->notify(client, conn, type, client_entry, tmp); - - if (client_entry != conn->local_entry) { - silc_idcache_del_by_id(conn->client_cache, SILC_ID_CLIENT, - client_entry->id); - if (client_entry->nickname) - silc_free(client_entry->nickname); - if (client_entry->server) - silc_free(client_entry->server); - if (client_entry->id) - silc_free(client_entry->id); - if (client_entry->send_key) - silc_cipher_free(client_entry->send_key); - if (client_entry->receive_key) - silc_cipher_free(client_entry->receive_key); - silc_free(client_entry); + /* 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_public_key_payload_decode(pk, pk_len, &public_key)) { + client_entry->public_key = public_key; + public_key = NULL; } + } - break; - - default: - break; + /* Notify application. */ + NOTIFY(client, conn, type, client_entry, tmp, mode, ntype, + client_entry->public_key); + + client_entry->mode = mode; + + /* Remove client that left the network. */ + if (ntype == SILC_NOTIFY_TYPE_SIGNOFF || + ntype == SILC_NOTIFY_TYPE_SERVER_SIGNOFF || + ntype == SILC_NOTIFY_TYPE_KILLED) { + silc_client_remove_from_channels(client, conn, client_entry); + client_entry->internal.valid = FALSE; + silc_client_del_client(client, conn, client_entry); } + if (public_key) + silc_pkcs_public_key_free(public_key); + out: - silc_notify_payload_free(payload); - if (client_id) - silc_free(client_id); - if (channel_id) - silc_free(channel_id); + /** Notify processed */ + silc_client_unref_client(client, conn, client_entry); + silc_fsm_next(fsm, silc_client_notify_processed); + return SILC_FSM_CONTINUE; }