packet_send.c
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
+ Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Copyright (C) 1997 - 2001 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
int silc_server_packet_send_real(SilcServer server,
SilcSocketConnection sock,
- int force_send)
+ bool force_send)
{
int ret;
+ /* If disconnecting, ignore the data */
+ if (SILC_IS_DISCONNECTING(sock))
+ return -1;
+
+ /* If rekey protocol is active we must assure that all packets are
+ sent through packet queue. */
+ if (SILC_SERVER_IS_REKEY(sock))
+ force_send = FALSE;
+
+ /* If outbound data is already pending do not force send */
+ if (SILC_IS_OUTBUF_PENDING(sock))
+ force_send = FALSE;
+
/* Send the packet */
ret = silc_packet_send(sock, force_send);
if (ret != -2)
This call sets the connection both for input and output (the input
is set always and this call keeps the input setting, actually).
Actual data sending is performed by silc_server_packet_process. */
- SILC_SET_CONNECTION_FOR_OUTPUT(sock->sock);
+ SILC_SET_CONNECTION_FOR_OUTPUT(server->schedule, sock->sock);
/* Mark to socket that data is pending in outgoing buffer. This flag
is needed if new data is added to the buffer before the earlier
SilcPacketType type,
SilcPacketFlags flags,
unsigned char *data,
- unsigned int data_len,
- int force_send)
+ uint32 data_len,
+ bool force_send)
{
void *dst_id = NULL;
SilcIdType dst_id_type = SILC_ID_NONE;
+ SilcIDListData idata = (SilcIDListData)sock->user_data;
if (!sock)
return;
+ /* If disconnecting, ignore the data */
+ if (SILC_IS_DISCONNECTING(sock))
+ return;
+
+ /* If entry is disabled do not sent anything. */
+ if (idata && idata->status & SILC_IDLIST_STATUS_DISABLED)
+ return;
+
/* Get data used in the packet sending, keys and stuff */
switch(sock->type) {
case SILC_SOCKET_TYPE_CLIENT:
- dst_id = ((SilcClientEntry)sock->user_data)->id;
- dst_id_type = SILC_ID_CLIENT;
+ if (sock->user_data) {
+ dst_id = ((SilcClientEntry)sock->user_data)->id;
+ dst_id_type = SILC_ID_CLIENT;
+ }
break;
case SILC_SOCKET_TYPE_SERVER:
case SILC_SOCKET_TYPE_ROUTER:
- dst_id = ((SilcServerEntry)sock->user_data)->id;
- dst_id_type = SILC_ID_SERVER;
+ if (sock->user_data) {
+ dst_id = ((SilcServerEntry)sock->user_data)->id;
+ dst_id_type = SILC_ID_SERVER;
+ }
break;
default:
break;
void *dst_id,
SilcIdType dst_id_type,
unsigned char *data,
- unsigned int data_len,
- int force_send)
+ uint32 data_len,
+ bool force_send)
{
SilcPacketContext packetdata;
- SilcIDListData idata;
+ SilcIDListData idata = (SilcIDListData)sock->user_data;
SilcCipher cipher = NULL;
SilcHmac hmac = NULL;
unsigned char *dst_id_data = NULL;
- unsigned int dst_id_len = 0;
+ uint32 dst_id_len = 0;
- SILC_LOG_DEBUG(("Sending packet, type %d", type));
+ /* If disconnecting, ignore the data */
+ if (SILC_IS_DISCONNECTING(sock))
+ return;
- /* Get data used in the packet sending, keys and stuff */
- idata = (SilcIDListData)sock->user_data;
+ /* If entry is disabled do not sent anything. */
+ if (idata && idata->status & SILC_IDLIST_STATUS_DISABLED)
+ return;
+
+ SILC_LOG_DEBUG(("Sending packet, type %d", type));
if (dst_id) {
dst_id_data = silc_id_id2str(dst_id, dst_id_type);
- dst_id_len = silc_id_get_len(dst_id_type);
+ dst_id_len = silc_id_get_len(dst_id, dst_id_type);
}
/* Set the packet context pointers */
packetdata.type = type;
packetdata.flags = flags;
packetdata.src_id = silc_id_id2str(server->id, server->id_type);
- packetdata.src_id_len = SILC_ID_SERVER_LEN;
+ packetdata.src_id_len = silc_id_get_len(server->id, server->id_type);
packetdata.src_id_type = server->id_type;
packetdata.dst_id = dst_id_data;
packetdata.dst_id_len = dst_id_len;
packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + dst_id_len;
packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen);
- packetdata.rng = server->rng;
/* Prepare outgoing data buffer for packet sending */
silc_packet_send_prepare(sock,
if (idata) {
cipher = idata->send_key;
- hmac = idata->hmac;
+ hmac = idata->hmac_send;
}
/* Encrypt the packet */
silc_free(packetdata.dst_id);
}
-/* Forwards packet. Packets sent with this function will be marked as
- forwarded (in the SILC header flags) so that the receiver knows that
- we have forwarded the packet to it. Forwarded packets are handled
- specially by the receiver as they are not destined to the receiver
- originally. However, the receiver knows this because the forwarded
- flag has been set (and the flag is authenticated). */
-
-void silc_server_packet_forward(SilcServer server,
- SilcSocketConnection sock,
- unsigned char *data, unsigned int data_len,
- int force_send)
+/* Assembles a new packet to be sent out to network. This doesn't actually
+ send the packet but creates the packet and fills the outgoing data
+ buffer and marks the packet ready to be sent to network. However, If
+ argument force_send is TRUE the packet is sent immediately and not put
+ to queue. Normal case is that the packet is not sent immediately.
+ The source and destination information is sent as argument for this
+ function. */
+
+void silc_server_packet_send_srcdest(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketType type,
+ SilcPacketFlags flags,
+ void *src_id,
+ SilcIdType src_id_type,
+ void *dst_id,
+ SilcIdType dst_id_type,
+ unsigned char *data,
+ uint32 data_len,
+ bool force_send)
{
+ SilcPacketContext packetdata;
SilcIDListData idata;
SilcCipher cipher = NULL;
SilcHmac hmac = NULL;
+ unsigned char *dst_id_data = NULL;
+ uint32 dst_id_len = 0;
+ unsigned char *src_id_data = NULL;
+ uint32 src_id_len = 0;
- SILC_LOG_DEBUG(("Forwarding packet"));
+ SILC_LOG_DEBUG(("Sending packet, type %d", type));
/* Get data used in the packet sending, keys and stuff */
idata = (SilcIDListData)sock->user_data;
+ if (dst_id) {
+ dst_id_data = silc_id_id2str(dst_id, dst_id_type);
+ dst_id_len = silc_id_get_len(dst_id, dst_id_type);
+ }
+
+ if (src_id) {
+ src_id_data = silc_id_id2str(src_id, src_id_type);
+ src_id_len = silc_id_get_len(src_id, src_id_type);
+ }
+
+ /* Set the packet context pointers */
+ packetdata.type = type;
+ packetdata.flags = flags;
+ packetdata.src_id = src_id_data;
+ packetdata.src_id_len = src_id_len;
+ packetdata.src_id_type = src_id_type;
+ packetdata.dst_id = dst_id_data;
+ packetdata.dst_id_len = dst_id_len;
+ packetdata.dst_id_type = dst_id_type;
+ packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
+ packetdata.src_id_len + dst_id_len;
+ packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen);
+
/* Prepare outgoing data buffer for packet sending */
- silc_packet_send_prepare(sock, 0, 0, data_len);
+ silc_packet_send_prepare(sock,
+ SILC_PACKET_HEADER_LEN +
+ packetdata.src_id_len +
+ packetdata.dst_id_len,
+ packetdata.padlen,
+ data_len);
+
+ SILC_LOG_DEBUG(("Putting data to outgoing buffer, len %d", data_len));
+
+ packetdata.buffer = sock->outbuf;
/* Put the data to the buffer */
if (data && data_len)
silc_buffer_put(sock->outbuf, data, data_len);
- /* Add the FORWARDED flag to packet flags */
- sock->outbuf->data[2] |= (unsigned char)SILC_PACKET_FLAG_FORWARDED;
+ /* Create the outgoing packet */
+ silc_packet_assemble(&packetdata);
if (idata) {
cipher = idata->send_key;
- hmac = idata->hmac;
+ hmac = idata->hmac_send;
}
/* Encrypt the packet */
silc_packet_encrypt(cipher, hmac, sock->outbuf, sock->outbuf->len);
- SILC_LOG_HEXDUMP(("Forwarded packet, len %d", sock->outbuf->len),
+ SILC_LOG_HEXDUMP(("Outgoing packet, len %d", sock->outbuf->len),
sock->outbuf->data, sock->outbuf->len);
/* Now actually send the packet */
silc_server_packet_send_real(server, sock, force_send);
+
+ if (packetdata.src_id)
+ silc_free(packetdata.src_id);
+ if (packetdata.dst_id)
+ silc_free(packetdata.dst_id);
}
/* Broadcast received packet to our primary route. This function is used
/* If the packet is originated from our primary route we are
not allowed to send the packet. */
- id = silc_id_str2id(packet->src_id, packet->src_id_type);
- if (id && SILC_ID_SERVER_COMPARE(id, server->router->id)) {
+ id = silc_id_str2id(packet->src_id, packet->src_id_len, packet->src_id_type);
+ if (id && !SILC_ID_SERVER_COMPARE(id, server->router->id)) {
idata = (SilcIDListData)sock->user_data;
silc_buffer_push(buffer, buffer->data - buffer->head);
silc_packet_send_prepare(sock, 0, 0, buffer->len);
silc_buffer_put(sock->outbuf, buffer->data, buffer->len);
- silc_packet_encrypt(idata->send_key, idata->hmac,
+ silc_packet_encrypt(idata->send_key, idata->hmac_send,
sock->outbuf, sock->outbuf->len);
SILC_LOG_HEXDUMP(("Broadcasted packet, len %d", sock->outbuf->len),
silc_buffer_push(buffer, buffer->data - buffer->head);
silc_packet_send_prepare(sock, 0, 0, buffer->len);
silc_buffer_put(sock->outbuf, buffer->data, buffer->len);
- silc_packet_encrypt(idata->send_key, idata->hmac,
+ silc_packet_encrypt(idata->send_key, idata->hmac_send,
sock->outbuf, sock->outbuf->len);
SILC_LOG_HEXDUMP(("Routed packet, len %d", sock->outbuf->len),
SilcCipher cipher,
SilcHmac hmac,
unsigned char *data,
- unsigned int data_len,
+ uint32 data_len,
int channel_message,
- int force_send)
+ bool force_send)
{
packet->truelen = data_len + SILC_PACKET_HEADER_LEN +
packet->src_id_len + packet->dst_id_len;
packet->buffer = sock->outbuf;
/* Put the data to buffer, assemble and encrypt the packet. The packet
- is encrypted with normal session key shared with the client. */
+ is encrypted with normal session key shared with the client, unless
+ the `channel_message' is TRUE. */
silc_buffer_put(sock->outbuf, data, data_len);
silc_packet_assemble(packet);
if (channel_message)
the channel. Usually this is used to send notify messages to the
channel, things like notify about new user joining to the channel.
If `route' is FALSE then the packet is sent only locally and will not
- be routed anywhere (for router locally means cell wide). */
+ be routed anywhere (for router locally means cell wide). If `sender'
+ is provided then the packet is not sent to that connection since it
+ originally came from it. */
void silc_server_packet_send_to_channel(SilcServer server,
+ SilcSocketConnection sender,
SilcChannelEntry channel,
SilcPacketType type,
- unsigned char route,
+ bool route,
unsigned char *data,
- unsigned int data_len,
- int force_send)
+ uint32 data_len,
+ bool force_send)
{
SilcSocketConnection sock = NULL;
SilcPacketContext packetdata;
SilcClientEntry client = NULL;
SilcServerEntry *routed = NULL;
SilcChannelClientEntry chl;
+ SilcHashTableList htl;
SilcIDListData idata;
- unsigned int routed_count = 0;
+ uint32 routed_count = 0;
/* This doesn't send channel message packets */
- if (type == SILC_PACKET_CHANNEL_MESSAGE)
- return;
+ assert(type != SILC_PACKET_CHANNEL_MESSAGE);
SILC_LOG_DEBUG(("Sending packet to channel"));
packetdata.flags = 0;
packetdata.type = type;
packetdata.src_id = silc_id_id2str(server->id, SILC_ID_SERVER);
- packetdata.src_id_len = SILC_ID_SERVER_LEN;
+ packetdata.src_id_len = silc_id_get_len(server->id, SILC_ID_SERVER);
packetdata.src_id_type = SILC_ID_SERVER;
packetdata.dst_id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- packetdata.dst_id_len = SILC_ID_CHANNEL_LEN;
+ packetdata.dst_id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
packetdata.dst_id_type = SILC_ID_CHANNEL;
- packetdata.rng = server->rng;
packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + packetdata.dst_id_len;
packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen);
/* If there are global users in the channel we will send the message
first to our router for further routing. */
- if (route && server->server_type == SILC_SERVER && !server->standalone &&
+ if (route && server->server_type != SILC_ROUTER && !server->standalone &&
channel->global_users) {
SilcServerEntry router;
sock = (SilcSocketConnection)router->connection;
idata = (SilcIDListData)router;
- SILC_LOG_DEBUG(("Sending channel message to router for routing"));
-
- silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
- data, data_len, FALSE, force_send);
+ if (sock != sender) {
+ SILC_LOG_DEBUG(("Sending channel message to router for routing"));
+
+ silc_server_packet_send_to_channel_real(server, sock, &packetdata,
+ idata->send_key,
+ idata->hmac_send,
+ data, data_len, FALSE,
+ force_send);
+ }
}
/* Send the message to clients on the channel's client list. */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
client = chl->client;
/* If client has router set it is not locally connected client and
sock = (SilcSocketConnection)client->router->connection;
idata = (SilcIDListData)client->router;
+ if (sender && sock == sender)
+ continue;
+
/* Send the packet */
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, FALSE,
force_send);
continue;
}
+ if (client && client->router)
+ continue;
+
/* Send to locally connected client */
if (client) {
sock = (SilcSocketConnection)client->connection;
idata = (SilcIDListData)client;
+ if (sender && sock == sender)
+ continue;
+
/* Send the packet */
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, FALSE,
force_send);
}
silc_free(packetdata.dst_id);
}
+/* This checks whether the relayed packet came from router. If it did
+ then we'll need to encrypt it with the channel key. This is called
+ from the silc_server_packet_relay_to_channel. */
+
+static bool
+silc_server_packet_relay_to_channel_encrypt(SilcServer server,
+ SilcSocketConnection sock,
+ SilcChannelEntry channel,
+ unsigned char *data,
+ unsigned int data_len)
+{
+ /* If we are router and the packet came from router and private key
+ has not been set for the channel then we must encrypt the packet
+ as it was decrypted with the session key shared between us and the
+ router which sent it. This is so, because cells does not share the
+ same channel key. */
+ if (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER &&
+ !(channel->mode & SILC_CHANNEL_MODE_PRIVKEY) &&
+ channel->channel_key) {
+ SilcBuffer chp;
+ uint32 iv_len, i;
+ uint16 dlen, flags;
+
+ iv_len = silc_cipher_get_block_len(channel->channel_key);
+ if (channel->iv[0] == '\0')
+ for (i = 0; i < iv_len; i++) channel->iv[i] =
+ silc_rng_get_byte(server->rng);
+ else
+ silc_hash_make(server->md5hash, channel->iv, iv_len, channel->iv);
+
+ /* Encode new payload. This encrypts it also. */
+ SILC_GET16_MSB(flags, data);
+ SILC_GET16_MSB(dlen, data + 2);
+
+ if (dlen > data_len) {
+ SILC_LOG_WARNING(("Corrupted channel message, cannot relay it"));
+ return FALSE;
+ }
+
+ chp = silc_channel_message_payload_encode(flags, dlen, data + 4,
+ iv_len, channel->iv,
+ channel->channel_key,
+ channel->hmac);
+ memcpy(data, chp->data, chp->len);
+ silc_buffer_free(chp);
+ }
+
+ return TRUE;
+}
+
/* This routine is explicitly used to relay messages to some channel.
Packets sent with this function we have received earlier and are
totally encrypted. This just sends the packet to all clients on
SilcChannelEntry channel,
void *sender,
SilcIdType sender_type,
+ void *sender_entry,
unsigned char *data,
- unsigned int data_len,
- int force_send)
+ uint32 data_len,
+ bool force_send)
{
- int found = FALSE;
+ bool found = FALSE;
SilcSocketConnection sock = NULL;
SilcPacketContext packetdata;
SilcClientEntry client = NULL;
SilcServerEntry *routed = NULL;
SilcChannelClientEntry chl;
- unsigned int routed_count = 0;
+ uint32 routed_count = 0;
SilcIDListData idata;
+ SilcHashTableList htl;
SILC_LOG_DEBUG(("Relaying packet to channel"));
+ /* This encrypts the packet, if needed. It will be encrypted if
+ it came from the router thus it needs to be encrypted with the
+ channel key. If the channel key does not exist, then we know we
+ don't have a single local user on the channel. */
+ if (!silc_server_packet_relay_to_channel_encrypt(server, sender_sock,
+ channel, data,
+ data_len))
+ return;
+
/* Set the packet context pointers. */
packetdata.flags = 0;
packetdata.type = SILC_PACKET_CHANNEL_MESSAGE;
packetdata.src_id = silc_id_id2str(sender, sender_type);
- packetdata.src_id_len = silc_id_get_len(sender_type);
+ packetdata.src_id_len = silc_id_get_len(sender, sender_type);
packetdata.src_id_type = sender_type;
packetdata.dst_id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- packetdata.dst_id_len = SILC_ID_CHANNEL_LEN;
+ packetdata.dst_id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
packetdata.dst_id_type = SILC_ID_CHANNEL;
- packetdata.rng = server->rng;
packetdata.padlen = SILC_PACKET_PADLEN((SILC_PACKET_HEADER_LEN +
packetdata.src_id_len +
packetdata.dst_id_len));
/* If there are global users in the channel we will send the message
first to our router for further routing. */
- if (server->server_type == SILC_SERVER && !server->standalone &&
+ if (server->server_type != SILC_ROUTER && !server->standalone &&
channel->global_users) {
SilcServerEntry router;
SILC_LOG_DEBUG(("Sending channel message to router for routing"));
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, TRUE,
force_send);
}
}
/* Send the message to clients on the channel's client list. */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
client = chl->client;
if (client) {
/* If sender is one on the channel do not send it the packet. */
- if (!found && !SILC_ID_CLIENT_COMPARE(client->id, sender)) {
+ if (!found && sender_type == SILC_ID_CLIENT &&
+ SILC_ID_CLIENT_COMPARE(client->id, sender)) {
found = TRUE;
continue;
}
/* Sender maybe server as well so we want to make sure that
we won't send the message to the server it came from. */
- if (!found && !SILC_ID_SERVER_COMPARE(client->router->id, sender)) {
+ if (!found && SILC_ID_SERVER_COMPARE(client->router->id, sender)) {
found = TRUE;
continue;
}
sock = (SilcSocketConnection)client->router->connection;
idata = (SilcIDListData)client->router;
- /* Send the packet */
- silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
- data, data_len, TRUE,
- force_send);
-
+ /* Do not send to the sender. Check first whether the true
+ sender's router is same as this client's router. Also check
+ if the sender socket is the same as this client's router
+ socket. */
+ if (sender_entry &&
+ ((SilcClientEntry)sender_entry)->router == client->router)
+ continue;
+ if (sender_sock && sock == sender_sock)
+ continue;
+
+ SILC_LOG_DEBUG(("Relaying packet to client ID(%s) %s (%s)",
+ silc_id_render(client->id, SILC_ID_CLIENT),
+ sock->hostname, sock->ip));
+
/* We want to make sure that the packet is routed to same router
only once. Mark this route as sent route. */
k = routed_count;
routed[k] = client->router;
routed_count++;
+ /* If the remote connection is router then we'll decrypt the
+ channel message and re-encrypt it with the session key shared
+ between us and the remote router. This is done because the
+ channel keys are cell specific and we have different channel
+ key than the remote router has. */
+ if (sock->type == SILC_SOCKET_TYPE_ROUTER) {
+ SILC_LOG_DEBUG(("Remote is router, encrypt with session key"));
+
+ /* If private key mode is not set then decrypt the packet
+ and re-encrypt it */
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ unsigned char *tmp = silc_calloc(data_len, sizeof(*data));
+ memcpy(tmp, data, data_len);
+
+ /* Decrypt the channel message (we don't check the MAC) */
+ if (channel->channel_key &&
+ !silc_channel_message_payload_decrypt(tmp, data_len,
+ channel->channel_key,
+ NULL)) {
+ memset(tmp, 0, data_len);
+ silc_free(tmp);
+ continue;
+ }
+
+ /* Now re-encrypt and send it to the router */
+ silc_server_packet_send_srcdest(server, sock,
+ SILC_PACKET_CHANNEL_MESSAGE, 0,
+ sender, sender_type,
+ channel->id, SILC_ID_CHANNEL,
+ tmp, data_len, force_send);
+
+ /* Free the copy of the channel message */
+ memset(tmp, 0, data_len);
+ silc_free(tmp);
+ } else {
+ /* Private key mode is set, we don't have the channel key, so
+ just re-encrypt the entire packet and send it to the router. */
+ silc_server_packet_send_srcdest(server, sock,
+ SILC_PACKET_CHANNEL_MESSAGE, 0,
+ sender, sender_type,
+ channel->id, SILC_ID_CHANNEL,
+ data, data_len, force_send);
+ }
+ continue;
+ }
+
+ /* Send the packet (to normal server) */
+ silc_server_packet_send_to_channel_real(server, sock, &packetdata,
+ idata->send_key,
+ idata->hmac_send,
+ data, data_len, TRUE,
+ force_send);
+
continue;
}
- /* XXX Check client's mode on the channel. */
+ if (client && client->router)
+ continue;
/* Get data used in packet header encryption, keys and stuff. */
sock = (SilcSocketConnection)client->connection;
idata = (SilcIDListData)client;
- SILC_LOG_DEBUG(("Sending packet to client %s",
- sock->hostname ? sock->hostname : sock->ip));
+ if (sender_sock && sock == sender_sock)
+ continue;
+
+ SILC_LOG_DEBUG(("Sending packet to client ID(%s) %s (%s)",
+ silc_id_render(client->id, SILC_ID_CLIENT),
+ sock->hostname, sock->ip));
/* Send the packet */
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, TRUE,
force_send);
}
SilcPacketType type,
SilcPacketFlags flags,
unsigned char *data,
- unsigned int data_len,
- int force_send)
+ uint32 data_len,
+ bool force_send)
{
SilcChannelClientEntry chl;
+ SilcHashTableList htl;
SilcSocketConnection sock = NULL;
SILC_LOG_DEBUG(("Start"));
/* Send the message to clients on the channel's client list. */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
- if (chl->client) {
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ if (chl->client && !chl->client->router) {
sock = (SilcSocketConnection)chl->client->connection;
/* Send the packet to the client */
{
SilcBuffer buffer = packet->buffer;
- /* Send and re-encrypt if private messge key does not exist */
- if ((packet->flags & SILC_PACKET_FLAG_PRIVMSG_KEY) == FALSE) {
+ /* Re-encrypt and send if private messge key does not exist */
+ if (!(packet->flags & SILC_PACKET_FLAG_PRIVMSG_KEY)) {
silc_buffer_push(buffer, SILC_PACKET_HEADER_LEN + packet->src_id_len
+ packet->dst_id_len + packet->padlen);
silc_server_packet_send_real(server, dst_sock, FALSE);
} else {
- /* Key exist so just send it */
+ /* Key exist so encrypt just header and send it */
silc_buffer_push(buffer, SILC_PACKET_HEADER_LEN + packet->src_id_len
+ packet->dst_id_len + packet->padlen);
silc_packet_send_prepare(dst_sock, 0, 0, buffer->len);
silc_buffer_put(dst_sock->outbuf, buffer->data, buffer->len);
+
+ /* Encrypt header */
+ silc_packet_encrypt(cipher, hmac, dst_sock->outbuf,
+ SILC_PACKET_HEADER_LEN + packet->src_id_len +
+ packet->dst_id_len + packet->padlen);
+
silc_server_packet_send_real(server, dst_sock, FALSE);
}
}
SilcSocketConnection sock)
{
char *motd;
- int motd_len;
+ uint32 motd_len;
if (server->config && server->config->motd &&
server->config->motd->motd_file) {
if (!motd)
return;
- silc_server_send_notify(server, sock, SILC_NOTIFY_TYPE_MOTD, 1,
+ silc_server_send_notify(server, sock, FALSE, SILC_NOTIFY_TYPE_MOTD, 1,
motd, motd_len);
silc_free(motd);
}
void silc_server_send_notify(SilcServer server,
SilcSocketConnection sock,
+ int broadcast,
SilcNotifyType type,
- unsigned int argc, ...)
+ uint32 argc, ...)
{
va_list ap;
SilcBuffer packet;
va_start(ap, argc);
packet = silc_notify_payload_encode(type, argc, ap);
- silc_server_packet_send(server, sock, SILC_PACKET_NOTIFY, 0,
+ silc_server_packet_send(server, sock, SILC_PACKET_NOTIFY,
+ broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
+ packet->data, packet->len, FALSE);
+
+ /* Send to backup routers if this is being broadcasted to primary
+ router. */
+ if (server->router && server->router->connection &&
+ sock == server->router->connection && broadcast)
+ silc_server_backup_send(server, NULL, SILC_PACKET_NOTIFY, 0,
+ packet->data, packet->len, FALSE, TRUE);
+
+ silc_buffer_free(packet);
+ va_end(ap);
+}
+
+/* Sends notify message and gets the arguments from the `args' Argument
+ Payloads. */
+
+void silc_server_send_notify_args(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcNotifyType type,
+ uint32 argc,
+ SilcBuffer args)
+{
+ SilcBuffer packet;
+
+ packet = silc_notify_payload_encode_args(type, argc, args);
+ silc_server_packet_send(server, sock, SILC_PACKET_NOTIFY,
+ broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
packet->data, packet->len, FALSE);
silc_buffer_free(packet);
}
+/* Send CHANNEL_CHANGE notify type. This tells the receiver to replace the
+ `old_id' with the `new_id'. */
+
+void silc_server_send_notify_channel_change(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelID *old_id,
+ SilcChannelID *new_id)
+{
+ SilcBuffer idp1, idp2;
+
+ idp1 = silc_id_payload_encode((void *)old_id, SILC_ID_CHANNEL);
+ idp2 = silc_id_payload_encode((void *)new_id, SILC_ID_CHANNEL);
+
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_CHANNEL_CHANGE,
+ 2, idp1->data, idp1->len, idp2->data, idp2->len);
+ silc_buffer_free(idp1);
+ silc_buffer_free(idp2);
+}
+
+/* Send NICK_CHANGE notify type. This tells the receiver to replace the
+ `old_id' with the `new_id'. */
+
+void silc_server_send_notify_nick_change(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcClientID *old_id,
+ SilcClientID *new_id)
+{
+ SilcBuffer idp1, idp2;
+
+ idp1 = silc_id_payload_encode((void *)old_id, SILC_ID_CLIENT);
+ idp2 = silc_id_payload_encode((void *)new_id, SILC_ID_CLIENT);
+
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_NICK_CHANGE,
+ 2, idp1->data, idp1->len, idp2->data, idp2->len);
+ silc_buffer_free(idp1);
+ silc_buffer_free(idp2);
+}
+
+/* Sends JOIN notify type. This tells that new client by `client_id' ID
+ has joined to the `channel'. */
+
+void silc_server_send_notify_join(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ SilcClientID *client_id)
+{
+ SilcBuffer idp1, idp2;
+
+ idp1 = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ idp2 = silc_id_payload_encode((void *)channel->id, SILC_ID_CHANNEL);
+ silc_server_send_notify(server, sock, broadcast, SILC_NOTIFY_TYPE_JOIN,
+ 2, idp1->data, idp1->len,
+ idp2->data, idp2->len);
+ silc_buffer_free(idp1);
+ silc_buffer_free(idp2);
+}
+
+/* Sends LEAVE notify type. This tells that `client_id' has left the
+ `channel'. The Notify packet is always destined to the channel. */
+
+void silc_server_send_notify_leave(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ SilcClientID *client_id)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify_dest(server, sock, broadcast, (void *)channel->id,
+ SILC_ID_CHANNEL, SILC_NOTIFY_TYPE_LEAVE,
+ 1, idp->data, idp->len);
+ silc_buffer_free(idp);
+}
+
+/* Sends CMODE_CHANGE notify type. This tells that `client_id' changed the
+ `channel' mode to `mode. The Notify packet is always destined to
+ the channel. */
+
+void silc_server_send_notify_cmode(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ uint32 mode_mask,
+ void *id, SilcIdType id_type,
+ char *cipher, char *hmac)
+{
+ SilcBuffer idp;
+ unsigned char mode[4];
+
+ idp = silc_id_payload_encode((void *)id, id_type);
+ SILC_PUT32_MSB(mode_mask, mode);
+
+ silc_server_send_notify_dest(server, sock, broadcast, (void *)channel->id,
+ SILC_ID_CHANNEL, SILC_NOTIFY_TYPE_CMODE_CHANGE,
+ 4, idp->data, idp->len,
+ mode, 4,
+ cipher, cipher ? strlen(cipher) : 0,
+ hmac, hmac ? strlen(hmac) : 0);
+ silc_buffer_free(idp);
+}
+
+/* Sends CUMODE_CHANGE notify type. This tells that `client_id' changed the
+ `target' client's mode on `channel'. The Notify packet is always
+ destined to the channel. */
+
+void silc_server_send_notify_cumode(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ uint32 mode_mask,
+ void *id, SilcIdType id_type,
+ SilcClientID *target)
+{
+ SilcBuffer idp1, idp2;
+ unsigned char mode[4];
+
+ idp1 = silc_id_payload_encode((void *)id, id_type);
+ idp2 = silc_id_payload_encode((void *)target, SILC_ID_CLIENT);
+ SILC_PUT32_MSB(mode_mask, mode);
+
+ silc_server_send_notify_dest(server, sock, broadcast, (void *)channel->id,
+ SILC_ID_CHANNEL,
+ SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
+ idp1->data, idp1->len,
+ mode, 4,
+ idp2->data, idp2->len);
+ silc_buffer_free(idp1);
+ silc_buffer_free(idp2);
+}
+
+/* Sends SIGNOFF notify type. This tells that `client_id' client has
+ left SILC network. This function is used only between server and router
+ traffic. This is not used to send the notify to the channel for
+ client. The `message may be NULL. */
+
+void silc_server_send_notify_signoff(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcClientID *client_id,
+ char *message)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_SIGNOFF,
+ message ? 2 : 1, idp->data, idp->len,
+ message, message ? strlen(message): 0);
+ silc_buffer_free(idp);
+}
+
+/* Sends TOPIC_SET notify type. This tells that `client_id' changed
+ the `channel's topic to `topic'. The Notify packet is always destined
+ to the channel. This function is used to send the topic set notifies
+ between routers. */
+
+void silc_server_send_notify_topic_set(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ SilcClientID *client_id,
+ char *topic)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_SERVER_SIGNOFF,
+ topic ? 2 : 1,
+ idp->data, idp->len,
+ topic, topic ? strlen(topic) : 0);
+ silc_buffer_free(idp);
+}
+
+/* Send KICKED notify type. This tells that the `client_id' on `channel'
+ was kicked off the channel. The `comment' may indicate the reason
+ for the kicking. This function is used only between server and router
+ traffic. */
+
+void silc_server_send_notify_kicked(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ SilcClientID *client_id,
+ char *comment)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify_dest(server, sock, broadcast, (void *)channel->id,
+ SILC_ID_CHANNEL, SILC_NOTIFY_TYPE_KICKED,
+ comment ? 2 : 1, idp->data, idp->len,
+ comment, comment ? strlen(comment) : 0);
+ silc_buffer_free(idp);
+}
+
+/* Send KILLED notify type. This tells that the `client_id' client was
+ killed from the network. The `comment' may indicate the reason
+ for the killing. */
+
+void silc_server_send_notify_killed(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcClientID *client_id,
+ char *comment)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify_dest(server, sock, broadcast, (void *)client_id,
+ SILC_ID_CLIENT, SILC_NOTIFY_TYPE_KILLED,
+ comment ? 2 : 1, idp->data, idp->len,
+ comment, comment ? strlen(comment) : 0);
+ silc_buffer_free(idp);
+}
+
+/* Sends UMODE_CHANGE notify type. This tells that `client_id' client's
+ user mode in the SILC Network was changed. This function is used to
+ send the packet between routers as broadcast packet. */
+
+void silc_server_send_notify_umode(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcClientID *client_id,
+ uint32 mode_mask)
+{
+ SilcBuffer idp;
+ unsigned char mode[4];
+
+ idp = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ SILC_PUT32_MSB(mode_mask, mode);
+
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE, 2,
+ idp->data, idp->len,
+ mode, 4);
+ silc_buffer_free(idp);
+}
+
+/* Sends BAN notify type. This tells that ban has been either `add'ed
+ or `del'eted on the `channel. This function is used to send the packet
+ between routers as broadcast packet. */
+
+void silc_server_send_notify_ban(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ char *add, char *del)
+{
+ SilcBuffer idp;
+
+ idp = silc_id_payload_encode((void *)channel->id, SILC_ID_CHANNEL);
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_BAN, 3,
+ idp->data, idp->len,
+ add, add ? strlen(add) : 0,
+ del, del ? strlen(del) : 0);
+ silc_buffer_free(idp);
+}
+
+/* Sends INVITE notify type. This tells that invite has been either `add'ed
+ or `del'eted on the `channel. The sender of the invite is the `client_id'.
+ This function is used to send the packet between routers as broadcast
+ packet. */
+
+void silc_server_send_notify_invite(SilcServer server,
+ SilcSocketConnection sock,
+ int broadcast,
+ SilcChannelEntry channel,
+ SilcClientID *client_id,
+ char *add, char *del)
+{
+ SilcBuffer idp, idp2;
+
+ idp = silc_id_payload_encode((void *)channel->id, SILC_ID_CHANNEL);
+ idp2 = silc_id_payload_encode((void *)client_id, SILC_ID_CLIENT);
+ silc_server_send_notify(server, sock, broadcast,
+ SILC_NOTIFY_TYPE_INVITE, 5,
+ idp->data, idp->len,
+ channel->channel_name, strlen(channel->channel_name),
+ idp2->data, idp2->len,
+ add, add ? strlen(add) : 0,
+ del, del ? strlen(del) : 0);
+ silc_buffer_free(idp);
+ silc_buffer_free(idp2);
+}
+
/* Sends notify message destined to specific entity. */
void silc_server_send_notify_dest(SilcServer server,
SilcSocketConnection sock,
+ int broadcast,
void *dest_id,
SilcIdType dest_id_type,
SilcNotifyType type,
- unsigned int argc, ...)
+ uint32 argc, ...)
{
va_list ap;
SilcBuffer packet;
dest_id, dest_id_type,
packet->data, packet->len, FALSE);
silc_buffer_free(packet);
+ va_end(ap);
}
/* Sends notify message to a channel. The notify message sent is
- distributed to all clients on the channel. If `router_notify' is TRUE
+ distributed to all clients on the channel. If `route_notify' is TRUE
then the notify may be routed to primary route or to some other routers.
- If FALSE it is assured that the notify is sent only locally. */
+ If FALSE it is assured that the notify is sent only locally. If `sender'
+ is provided then the packet is not sent to that connection since it
+ originally came from it. */
void silc_server_send_notify_to_channel(SilcServer server,
+ SilcSocketConnection sender,
SilcChannelEntry channel,
unsigned char route_notify,
SilcNotifyType type,
- unsigned int argc, ...)
+ uint32 argc, ...)
{
va_list ap;
SilcBuffer packet;
va_start(ap, argc);
packet = silc_notify_payload_encode(type, argc, ap);
- silc_server_packet_send_to_channel(server, channel,
+ silc_server_packet_send_to_channel(server, sender, channel,
SILC_PACKET_NOTIFY, route_notify,
packet->data, packet->len, FALSE);
silc_buffer_free(packet);
+ va_end(ap);
}
-/* Send notify message to all clients the client has joined. It is quaranteed
+/* Send notify message to all channels the client has joined. It is quaranteed
that the message is sent only once to a client (ie. if a client is joined
on two same channel it will receive only one notify message). Also, this
sends only to local clients (locally connected if we are server, and to
- local servers if we are router). */
+ local servers if we are router). If `sender' is provided the packet is
+ not sent to that client at all. */
void silc_server_send_notify_on_channels(SilcServer server,
+ SilcClientEntry sender,
SilcClientEntry client,
SilcNotifyType type,
- unsigned int argc, ...)
+ uint32 argc, ...)
{
int k;
SilcSocketConnection sock = NULL;
SilcPacketContext packetdata;
SilcClientEntry c;
SilcClientEntry *sent_clients = NULL;
- unsigned int sent_clients_count = 0;
+ uint32 sent_clients_count = 0;
SilcServerEntry *routed = NULL;
- unsigned int routed_count = 0;
+ uint32 routed_count = 0;
+ SilcHashTableList htl, htl2;
SilcChannelEntry channel;
SilcChannelClientEntry chl, chl2;
SilcIDListData idata;
SilcBuffer packet;
unsigned char *data;
- unsigned int data_len;
- int force_send = FALSE;
+ uint32 data_len;
+ bool force_send = FALSE;
va_list ap;
SILC_LOG_DEBUG(("Start"));
- if (!silc_list_count(client->channels))
+ if (!silc_hash_table_count(client->channels))
return;
va_start(ap, argc);
packetdata.flags = 0;
packetdata.type = SILC_PACKET_NOTIFY;
packetdata.src_id = silc_id_id2str(server->id, SILC_ID_SERVER);
- packetdata.src_id_len = SILC_ID_SERVER_LEN;
+ packetdata.src_id_len = silc_id_get_len(server->id, SILC_ID_SERVER);
packetdata.src_id_type = SILC_ID_SERVER;
- packetdata.rng = server->rng;
- silc_list_start(client->channels);
- while ((chl = silc_list_get(client->channels)) != SILC_LIST_END) {
+ silc_hash_table_list(client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
channel = chl->channel;
/* Send the message to all clients on the channel's client list. */
- silc_list_start(channel->user_list);
- while ((chl2 = silc_list_get(channel->user_list)) != SILC_LIST_END) {
+ silc_hash_table_list(channel->user_list, &htl2);
+ while (silc_hash_table_get(&htl2, NULL, (void *)&chl2)) {
c = chl2->client;
+ if (sender && c == sender)
+ continue;
+
/* Check if we have sent the packet to this client already */
for (k = 0; k < sent_clients_count; k++)
if (sent_clients[k] == c)
idata = (SilcIDListData)c->router;
packetdata.dst_id = silc_id_id2str(c->router->id, SILC_ID_SERVER);
- packetdata.dst_id_len = SILC_ID_SERVER_LEN;
+ packetdata.dst_id_len = silc_id_get_len(c->router->id, SILC_ID_SERVER);
packetdata.dst_id_type = SILC_ID_SERVER;
packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + packetdata.dst_id_len;
/* Send the packet */
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, FALSE,
force_send);
continue;
}
+ if (c && c->router)
+ continue;
+
/* Send to locally connected client */
if (c) {
idata = (SilcIDListData)c;
packetdata.dst_id = silc_id_id2str(c->id, SILC_ID_CLIENT);
- packetdata.dst_id_len = SILC_ID_CLIENT_LEN;
+ packetdata.dst_id_len = silc_id_get_len(c->id, SILC_ID_CLIENT);
packetdata.dst_id_type = SILC_ID_CLIENT;
packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + packetdata.dst_id_len;
/* Send the packet */
silc_server_packet_send_to_channel_real(server, sock, &packetdata,
- idata->send_key, idata->hmac,
+ idata->send_key,
+ idata->hmac_send,
data, data_len, FALSE,
force_send);
if (sent_clients_count)
silc_free(sent_clients);
silc_free(packetdata.src_id);
+ va_end(ap);
}
/* Sends New ID Payload to remote end. The packet is used to distribute
SilcSocketConnection sock,
int broadcast,
void *id, SilcIdType id_type,
- unsigned int id_len)
+ uint32 id_len)
{
SilcBuffer idp;
silc_server_packet_send(server, sock, SILC_PACKET_NEW_ID,
broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
idp->data, idp->len, FALSE);
- silc_buffer_free(idp);
-}
-
-/* Sends Replace ID payload to remote end. This is used to replace old
- ID with new ID sent in the packet. This is called for example when
- user changes nickname and we create new ID for the user. If the
- argument `broadcast' is TRUE then the packet is sent as
- broadcast packet. */
-/* XXX It would be expected that the new id is same type as the old
- ID. :) */
-
-void silc_server_send_replace_id(SilcServer server,
- SilcSocketConnection sock,
- int broadcast,
- void *old_id, SilcIdType old_id_type,
- unsigned int old_id_len,
- void *new_id, SilcIdType new_id_type,
- unsigned int new_id_len)
-{
- SilcBuffer packet;
- unsigned char *oid;
- unsigned char *nid;
-
- SILC_LOG_DEBUG(("Start"));
-
- oid = silc_id_id2str(old_id, old_id_type);
- if (!oid)
- return;
-
- nid = silc_id_id2str(new_id, new_id_type);
- if (!nid)
- return;
- packet = silc_buffer_alloc(2 + 2 + 2 + 2 + old_id_len + new_id_len);
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(old_id_type),
- SILC_STR_UI_SHORT(old_id_len),
- SILC_STR_UI_XNSTRING(oid, old_id_len),
- SILC_STR_UI_SHORT(new_id_type),
- SILC_STR_UI_SHORT(new_id_len),
- SILC_STR_UI_XNSTRING(nid, new_id_len),
- SILC_STR_END);
-
- silc_server_packet_send(server, sock, SILC_PACKET_REPLACE_ID,
- broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
- packet->data, packet->len, FALSE);
- silc_free(oid);
- silc_free(nid);
- silc_buffer_free(packet);
-}
+ /* Send to backup routers if this is being broadcasted to primary
+ router. */
+ if (server->router && server->router->connection &&
+ sock == server->router->connection && broadcast)
+ silc_server_backup_send(server, NULL, SILC_PACKET_NEW_ID, 0,
+ idp->data, idp->len, FALSE, TRUE);
-/* This function is used to send Remove Channel User payload. This may sent
- by server but is usually used only by router to notify other routers that
- user has left a channel. Normal server sends this packet to its router
- to notify that the router should not hold a record about this client
- on a channel anymore. Router distributes it further to other routers. */
-
-void silc_server_send_remove_channel_user(SilcServer server,
- SilcSocketConnection sock,
- int broadcast,
- void *client_id, void *channel_id)
-{
- SilcBuffer packet;
- unsigned char *clid, *chid;
-
- SILC_LOG_DEBUG(("Start"));
-
- clid = silc_id_id2str(client_id, SILC_ID_CLIENT);
- if (!clid)
- return;
-
- chid = silc_id_id2str(channel_id, SILC_ID_CHANNEL);
- if (!chid)
- return;
-
- packet = silc_buffer_alloc(2 + 2 + SILC_ID_CLIENT_LEN + SILC_ID_CHANNEL_LEN);
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(SILC_ID_CLIENT_LEN),
- SILC_STR_UI_XNSTRING(clid, SILC_ID_CLIENT_LEN),
- SILC_STR_UI_SHORT(SILC_ID_CHANNEL_LEN),
- SILC_STR_UI_XNSTRING(chid, SILC_ID_CHANNEL_LEN),
- SILC_STR_END);
-
- silc_server_packet_send(server, sock, SILC_PACKET_REMOVE_CHANNEL_USER,
- broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
- packet->data, packet->len, FALSE);
- silc_free(clid);
- silc_free(chid);
- silc_buffer_free(packet);
+ silc_buffer_free(idp);
}
/* Send New Channel Payload to notify about newly created channel in the
int broadcast,
char *channel_name,
void *channel_id,
- unsigned int channel_id_len)
+ uint32 channel_id_len,
+ uint32 mode)
{
SilcBuffer packet;
unsigned char *cid;
- unsigned int name_len = strlen(channel_name);
+ uint32 name_len = strlen(channel_name);
SILC_LOG_DEBUG(("Start"));
if (!cid)
return;
- packet = silc_buffer_alloc(2 + 2 + name_len + channel_id_len);
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(name_len),
- SILC_STR_UI_XNSTRING(channel_name, name_len),
- SILC_STR_UI_SHORT(channel_id_len),
- SILC_STR_UI_XNSTRING(cid, channel_id_len),
- SILC_STR_END);
+ /* Encode the channel payload */
+ packet = silc_channel_payload_encode(channel_name, name_len,
+ cid, channel_id_len, mode);
silc_server_packet_send(server, sock, SILC_PACKET_NEW_CHANNEL,
broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
packet->data, packet->len, FALSE);
- silc_free(cid);
- silc_buffer_free(packet);
-}
-
-/* Send New Channel User payload to notify routers in the network about new
- user on the channel. The packet is may be broadcasted. Normal server
- can send this but must not receive. Router can send and receive it. */
-
-void silc_server_send_new_channel_user(SilcServer server,
- SilcSocketConnection sock,
- int broadcast,
- void *channel_id,
- unsigned int channel_id_len,
- void *client_id,
- unsigned int client_id_len)
-{
- SilcBuffer packet;
- unsigned char *clid, *chid;
-
- SILC_LOG_DEBUG(("Start"));
-
- clid = silc_id_id2str(client_id, SILC_ID_CLIENT);
- if (!clid)
- return;
-
- chid = silc_id_id2str(channel_id, SILC_ID_CHANNEL);
- if (!chid)
- return;
+ /* Send to backup routers if this is being broadcasted to primary
+ router. */
+ if (server->router && server->router->connection &&
+ sock == server->router->connection && broadcast)
+ silc_server_backup_send(server, NULL, SILC_PACKET_NEW_CHANNEL, 0,
+ packet->data, packet->len, FALSE, TRUE);
- packet = silc_buffer_alloc(2 + 2 + channel_id_len + client_id_len);
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(channel_id_len),
- SILC_STR_UI_XNSTRING(chid, channel_id_len),
- SILC_STR_UI_SHORT(client_id_len),
- SILC_STR_UI_XNSTRING(clid, client_id_len),
- SILC_STR_END);
-
- silc_server_packet_send(server, sock, SILC_PACKET_NEW_CHANNEL_USER,
- broadcast ? SILC_PACKET_FLAG_BROADCAST : 0,
- packet->data, packet->len, FALSE);
- silc_free(clid);
- silc_free(chid);
+ silc_free(cid);
silc_buffer_free(packet);
}
/* Send Channel Key payload to distribute the new channel key. Normal server
sends this to router when new client joins to existing channel. Router
- sends this to the local server who forwarded join command in case where
- the channel did not exist yet. Both normal and router servers uses this
+ sends this to the local server who sent the join command in case where
+ the channel did not exist yet. Both normal and router servers uses this
also to send this to locally connected clients on the channel. This
- must not be broadcasted packet. */
+ must not be broadcasted packet. Routers do not send this to each other.
+ If `sender is provided then the packet is not sent to that connection since
+ it originally came from it. */
void silc_server_send_channel_key(SilcServer server,
+ SilcSocketConnection sender,
SilcChannelEntry channel,
unsigned char route)
{
SilcBuffer packet;
unsigned char *chid;
- unsigned int tmp_len;
+ uint32 tmp_len;
SILC_LOG_DEBUG(("Start"));
/* Encode channel key packet */
tmp_len = strlen(channel->channel_key->cipher->name);
- packet = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, chid, tmp_len,
+ packet = silc_channel_key_payload_encode(silc_id_get_len(channel->id,
+ SILC_ID_CHANNEL),
+ chid, tmp_len,
channel->channel_key->cipher->name,
channel->key_len / 8, channel->key);
-
- silc_server_packet_send_to_channel(server, channel, SILC_PACKET_CHANNEL_KEY,
+ silc_server_packet_send_to_channel(server, sender, channel,
+ SILC_PACKET_CHANNEL_KEY,
route, packet->data, packet->len, FALSE);
silc_buffer_free(packet);
silc_free(chid);
void silc_server_send_command(SilcServer server,
SilcSocketConnection sock,
SilcCommand command,
- unsigned int argc, ...)
+ uint16 ident,
+ uint32 argc, ...)
{
SilcBuffer packet;
va_list ap;
va_start(ap, argc);
- packet = silc_command_payload_encode_vap(command, 0, argc, ap);
+ packet = silc_command_payload_encode_vap(command, ident, argc, ap);
silc_server_packet_send(server, sock, SILC_PACKET_COMMAND, 0,
packet->data, packet->len, TRUE);
silc_buffer_free(packet);
+ va_end(ap);
+}
+
+/* Send the heartbeat packet. */
+
+void silc_server_send_heartbeat(SilcServer server,
+ SilcSocketConnection sock)
+{
+ silc_server_packet_send(server, sock, SILC_PACKET_HEARTBEAT, 0,
+ NULL, 0, FALSE);
+}
+
+/* Generic function to relay packet we've received. This is used to relay
+ packets to a client but generally can be used to other purposes as well. */
+
+void silc_server_relay_packet(SilcServer server,
+ SilcSocketConnection dst_sock,
+ SilcCipher cipher,
+ SilcHmac hmac,
+ SilcPacketContext *packet,
+ bool force_send)
+{
+ silc_buffer_push(packet->buffer, SILC_PACKET_HEADER_LEN + packet->src_id_len
+ + packet->dst_id_len + packet->padlen);
+
+ silc_packet_send_prepare(dst_sock, 0, 0, packet->buffer->len);
+ silc_buffer_put(dst_sock->outbuf, packet->buffer->data, packet->buffer->len);
+
+ /* Re-encrypt packet */
+ silc_packet_encrypt(cipher, hmac, dst_sock->outbuf, packet->buffer->len);
+
+ /* Send the packet */
+ silc_server_packet_send_real(server, dst_sock, force_send);
+
+ silc_buffer_pull(packet->buffer, SILC_PACKET_HEADER_LEN + packet->src_id_len
+ + packet->dst_id_len + packet->padlen);
+}
+
+/* Routine used to send the connection authentication packet. */
+
+void silc_server_send_connection_auth_request(SilcServer server,
+ SilcSocketConnection sock,
+ uint16 conn_type,
+ SilcAuthMethod auth_meth)
+{
+ SilcBuffer packet;
+
+ packet = silc_buffer_alloc(4);
+ silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
+ silc_buffer_format(packet,
+ SILC_STR_UI_SHORT(conn_type),
+ SILC_STR_UI_SHORT(auth_meth),
+ SILC_STR_END);
+
+ silc_server_packet_send(server, sock, SILC_PACKET_CONNECTION_AUTH_REQUEST,
+ 0, packet->data, packet->len, FALSE);
+ silc_buffer_free(packet);
+}
+
+/* Purge the outgoing packet queue to the network if there is data. This
+ function can be used to empty the packet queue. It is guaranteed that
+ after this function returns the outgoing data queue is empty. */
+
+void silc_server_packet_queue_purge(SilcServer server,
+ SilcSocketConnection sock)
+{
+ if (sock && SILC_IS_OUTBUF_PENDING(sock) &&
+ (SILC_IS_DISCONNECTED(sock) == FALSE)) {
+ server->stat.packets_sent++;
+
+ if (sock->outbuf->data - sock->outbuf->head)
+ silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
+
+ silc_packet_send(sock, TRUE);
+
+ SILC_SET_CONNECTION_FOR_INPUT(server->schedule, sock->sock);
+ SILC_UNSET_OUTBUF_PENDING(sock);
+ silc_buffer_clear(sock->outbuf);
+ }
}
projects / silc.git / blobdiff