-Fri Oct 5 21:16:28 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+Thu Mar 8 21:39:03 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added assert()s to buffer formatting and unformatting routines
+ to assert (if --enable-debug) when error occurs. Affected
+ file: lib/silcutil/silcbuffmt.c.
+
+ * Changed to auto-reconnect to check whether the remote host is
+ router and register the re-connect timeout if it is. It used
+ to check that whether we are normal server, but router must do
+ auto-reconnect with another router as well. Affected file
+ silcd/server.c.
+
+ * Removed the [<key len>] option from CMODE command as the cipher
+ name decides the key length, nowadays. See the defined ciphers
+ from the protocol specification.
+
+ * Added [<hmac>] option to the CMODE command to define the HMAC
+ for the channel. Added SILC_CMODE_HMAC channel mode.
+
+ * Added [<hmac>] option for the JOIN command so that user can
+ select which HMAC is used to compute the MACs of the channel
+ messages.
+
+ * Added Hmac field to the Channel Message Payload. The integrity
+ of plaintext channel messages are now protected by computing
+ MAC of the message and attaching the MAC to the payload. The
+ MAC is not encrypted. Now, it is clear that this causes some
+ overhead to the size of the packet but rationale for this is that
+ now the receiver can verify whether the channel message decrypted
+ correctly and also when private keys are set for the channel the
+ receiver can decrypt the packet with several keys and check from
+ the MAC which key decrypted the message correctly.
+
+ * Added silc_cipher_encrypt and silc_cipher_decrypt into the
+ lib/silccrypt/silccipher.[ch].
+
+ * Added silc_hash_len to return the digest length into the
+ lib/silcrypt/silchash.[ch].
+
+ * Rewrote parts of Silc Channel Payload interface in the
+ lib/silccore/silcchannel.[ch]. The encode function now also
+ encrypts the packet and parse function decrypts it.
+
+ * Channel message delivery between routers was broken after the
+ channel key distribution was fixed earlier. The channel key
+ was used be to distributed to other routers as well which is not
+ allowed by the protocol. Now this is fixed and channel keys
+ really are cell specific and the channel message delivery between
+ routers comply with the protocol specification.
+
+Wed Mar 7 20:58:50 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed a minor formatting bug in the SKE's key material processing.
+ It actually might have processed the keys wrong way resulting
+ into wrong keys.
+
+ * Redefined the mandatory HMAC algorithms and added new algorithms.
+ Added hmac-sha1-96 and hmac-md5-96 which are normal hmac-sha1
+ and hmac-md5 truncated to 96 bits. The mandatory is now
+ hmac-sha1-96. Rest are optional (including the one that used
+ to be mandatory). Rationale for this is that the truncated HMAC
+ length is sufficient from security point of view and can actually
+ make the attack against the HMAC harder. Also, the truncated
+ HMAC causes less overhead to the packets. See the RFC2104 for
+ more information.
+
+ * Added new [hmac] configuration section. The SKE used to use
+ the hash names (md5 and sha1) in the SKE proposal as HMCAS which
+ is of course wrong. The official names that must be proposed in
+ the SKE are the ones defined in the protocol specification
+ (hmac-sha1-96 for example). The user can configure any hmac
+ using any hash function configured in the [hash] section. At
+ least, the mandatory must be configured.
+
+ Rewrote the HMAC interface in lib/silccrypt/silchmac.[ch].
+
+ * Added HMAC list to the SKE proposal list. It has now both
+ hash algorithm list and HMAC list. This makes the protocol
+ incompatible with previous versions. The SKE now seems to work
+ the way it is supposed to work, for the first time actually.
+
+ * Defined plain Hash algorithms to the protocol specification.
+ Added sha1 and md5.
+
+Tue Mar 6 15:36:11 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Implemented support for key agreement packets into the server.
+ Added functions silc_server_key_agreement and
+ silc_server_send_key_agreement. Other than these functions,
+ server has nothing to do with this packet.
+
+ * Added support for private message key packets into the server.
+ Added functions silc_server_private_message_key and
+ silc_server_send_private_message_key.
+
+ * Updated TODO.
+
+ * Changed the silc_[client|server]_protocol_ke_set_keys to be
+ called in the protocol's final callback instead in the END
+ protocol state. This makes a little more sense and in the same
+ time in client we can use the same protocol routines for normal
+ key exchange and to key agreement packet handling as well.
+
+ * Added to both client's and server's KE protocol context the
+ SilcSKEKeyMaterial pointer to save the key material. We will
+ bring the key material to the protocol's final callback by doing
+ this. The final callback must free the key material.
+
+ * Added SKE's packet_send callback into client's KE protocol
+ context so that the caller can choose what packet sending function
+ is used. This way we can use different packet sending when
+ doing normal SKE when doing key agreement packet handling (in
+ the key agreement packet handling we do not want to encrypt
+ the packets).
+
+ * Implemented the responder side of the key agreement routines
+ in the client. The client can now bind to specified port and
+ accept incoming key negotiation. The key material is passed
+ to the application after the protocol is over.
+
+ * Implemented the processing of incoming Key Agreement packet
+ in the client. Added function silc_client_key_agreement to
+ process the packet.
+
+ * Implemented the intiator side of the key agreement routines
+ in the client. The client can now initiate key agreement with
+ another remote client. The key material is passed to the
+ application after the protocol is over.
+
+ * Created client_keyagr.c to include all the key agreement
+ routines.
+
+ * Added macro SILC_TASK_CALLBACK_GLOBAL which is equal to the
+ SILC_TASK_CALLBACK except that it is not static.
+
+ * Created client_notify.c and moved the Notify packet handling
+ from the client.[ch] into that file.
+
+ * Created client_prvmsg.c and moved all private message and
+ private message key routines from the client.[ch] into that file.
+
+ * Create client_channel.c and moved all channel message and
+ channel private key routines from the client.[ch] into that file.
+
+ * Changed silc_client_get_client_by_id_resolve to resolve with
+ WHOIS command instead of IDENTIFY command, in the file
+ lib/silclient/idlist.c.
+
+Mon Mar 5 18:39:49 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Implemented the SKE's responder side to the Client library.
+
+ * When FAILURE is received to the protocol do not trust it
+ blindly. Register a timeout to wait whether the remote closes
+ the connection as it should do it, only after that process the
+ actual failure. This was changed to both client and server.
+
+ * Added client_internal.h to include some of the structures
+ there instead of client.h in lib/silcclient/.
+
+ * Added function silc_task_unregister_by_callback to unregister
+ timeouts by the callback function.
+
+Sat Mar 3 19:15:43 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Some "Incomplete WHOIS info" errors has been appearing on the
+ log files. Took away the entry->userinfo check from WHOIS
+ reply sending. The entry->userinfo is now " " if client did not
+ provide one. I thought this was fixed earlier but something
+ is wrong still. Let's see if the error still appears.
+
+Wed Feb 28 20:56:29 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed a minor bug in the login when the channel key is
+ re-generated in the server. It used to generate the key in
+ wrong order and thus caused problems in the channel traffic.
+
+ * Fixed a minor bug in channel key distsribution after
+ KICK command. The key was not sent to the router even though
+ it should've been.
+
+Tue Feb 27 20:24:25 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added silc_ske_process_key_material_data as generic routine
+ to process any key material as the SILC protocol dictates. The
+ function is used by the actual SKE library but can be used by
+ applications as well. This relates to the private message keys
+ and the channel private keys since they must be processed the
+ same way the normal SILC session keys. The protocol dictates
+ this. Affected files: lib/silcske/silcske.[ch].
+
+ Added also silc_ske_free_key_material to free the
+ SilcSKEKeyMaterial structure.
+
+ * Defined silc_cipher_set_key function to set the key for
+ cipher without using the object's method function. The affected
+ files: lib/silccrypt/silccipher.[ch].
+
+ * Implemented silc silc_client_add_private_message_key,
+ silc_client_add_private_message_key_ske,
+ silc_client_del_private_message_key,
+ silc_client_list_private_message_keys and
+ silc_client_free_private_message_keys functions in the
+ client library.
+
+ Added functions silc_client_send_private_message_key to send
+ the Private Message Key payload and silc_client_private_message_key
+ to handle incoming Private Message Key payload.
+
+ * Added Cipher field to the Private Message Key payload to set
+ the cipher to be used. If ignored, the default cipher defined
+ in the SILC protocol (aes-256-cbc) is used.
+
+Tue Feb 27 13:30:52 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Removed lib/silcclient/ops.h file.
+
+ Redefined parts of the SILC Client Library API. Created new
+ file silcapi.h that deprecates the ops.h file and defines the
+ published Client Library API. Defined also private message key
+ API and channel private key API into the file.
+
+ This is the file that the application must include from the
+ SILC Client Library. Other files need not be included by
+ the application anymore.
+
+ * Added new key_agreement client operation callback and also
+ defined the Key Agreement library API for the application.
+
+Tue Feb 27 11:28:31 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new packet type: SILC_PACKET_KEY_AGREEMENT. This packet
+ is used by clients to request key negotiation between another
+ client in the SILC network. If the negotiation is started it
+ is performed using the SKE protocol. The result of the
+ negotiation, the secret key material, can be used for example
+ as private message key.
+
+ Implemented the Key Agreement payload into the files
+ lib/silccore/silauth.[ch].
+
+Mon Feb 26 12:13:58 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Redefined ciphers for the SILC protocol. Added some new ciphers
+ and defined the key lengths for the algorithms. Changed the
+ code accordingly. The default key length is now 256 bits.
+
+ * Fixed SKE key distribution function silc_ske_process_key_material
+ when the key length is more than 128 bits. The default key
+ length in SILC is now 256 bits.
+
+ * Added new command status type: SILC_STATUS_ERR_UNKOWN_ALGORITHM
+ to indicate unsupported algorithm.
+
+ * Renamed rijndael.c to aes.c and all functions as well.
+
+ * Fixed a long standing channel key setting bug in client library.
+ Weird that it has never surfaced before.
+
+ * Fixed bug in channel deletion. If the entire channel is removed
+ then it must also delete the references of the channel entry
+ from the client's channel list as the client's channel entry and
+ the channel's client entry share same memory.
+
+Sun Feb 25 20:47:29 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Implemented CONNECT and SHUTDOWN commands in the client.
+
+ * Implemented CLOSE command to the client.
+
+ * Added the function silc_idlist_find_server_by_name into the
+ files silcd/idlist.[ch].
+
+ Added the function silc_idlist_find_server_by_conn into the
+ files silcd/idlist.[ch].
+
+Sat Feb 24 23:45:49 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * DIE command was renamed to SHUTDOWN. Updated the both code
+ and protocol specs.
+
+ * Defined SILC_UMODE_NONE, SILC_UMODE_SERVER_OPERATOR and
+ SILC_UMODE_ROUTER_OPERATOR modes into lib/silccore/silcmode.h.
+
+ * Implemented CONNECT, CLOSE and SHUTDOWN commands to the server
+ side.
+
+ * Added function silc_server_create_connection function to create
+ connection to remote router. My server implementation actually
+ does not allow router to connect to normal server (it expects
+ that normal server always initiates the connection to the router)
+ so the CONNECT command is only good for connecting to another
+ router.
+
+Sat Feb 24 16:03:45 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added SILC_NOTIFY_TYPE_KICKED to indicate that the client
+ or some other client was kicked from the channel.
+
+ Implemented the handling of the notify type to both client
+ and server.
+
+ Implemented silc_server_send_notify_kicked to send the KICKED
+ notify. It is used to send it to the server's primary router.
+
+ * Implemented the KICK command into server and client.
+
+ * Added `query' argument to the silc_idlist_get_client function
+ to indicate whether to query the client from server or not if
+ it was not found.
+
+ * Added new command status type SILC_STATUS_ERR_NO_CHANNEL_FOPRIV
+ to indicate that the client is not channel founder.
+
+ * Updated TODO.
+
+Sat Feb 24 00:00:55 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Removed the rng context from SilcPacketContext structure and
+ changed that the packet routine uses the Global RNG API.
+
+Fri Feb 23 11:22:57 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added support for quit message that client can "leave" on the
+ channel when it quits the SILC. It is ditributed inside the
+ SILC_NOTIFY_TYPE_SIGNOFF notify type.
+
+ Added silc_server_free_client_data that will take the
+ signoff message as argument.
+
+ * Changed SKE routines to use the silc_pkcs_sign/verify routines.
+
+Thu Feb 22 23:05:36 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Updated parts of the protocol specification to keep it up
+ to date.
+
+Thu Feb 22 15:08:20 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added List flag (SILC_PACKET_FLAG_LIST) to indicate list of
+ payloads in one packet.
+
+ * Deprecated following packet types: NEW_ID_LIST, NEW_CHANNEL_LIST,
+ NEW_CHANNEL_USER_LIST, SET_MODE and SET_MODE_LIST. List packets
+ use now the new List flag.
+
+ * Also deprecated the following packet types: REPLACE_ID,
+ NEW_CHANNEL_USER and REMOVE_CHANNEL_USER packet types.
+
+ * Added list support for Notify packet in server.
+
+ * Added silc_server_send_notify_channel_change to send the
+ CHANNEL_CHANGE notify type to replace channel ID's. Deprecates
+ the silc_server_send_replace_id.
+
+ * Added silc_server_send_notify_nick_change to send the
+ NICK_CHANGE notify type. Deprecates the function
+ silc_server_send_replace_id.
+
+ * Added silc_server_send_notify_join to send the JOIN notify type.
+ Deprecates the function silc_server_send_new_channel_user.
+
+ * Added silc_server_send_notify_leave to send LEAVE notify type.
+ Deprecates the function silc_server_send_remove_channel_user.
+
+ * Added silc_server_send_notify_cmode and
+ silc_server_send_notify_cumode to send CMODE and CUMODE notify
+ types. Deprecates the silc_server_send_set_mode function.
+
+ * Added SERVER_SIGNOFF notify type to indicate that server has
+ quit. This means that all clients on the channel from that
+ server will drop. This can be also used when netsplit happens.
+
+ Deprecated REMOVE_ID packet type since it is not needed anymore
+ even from server.
+
+ Added silc_server_send_notify_server_signoff to send the
+ SERVER_SIGNOFF notify type. Deprecates the function
+ silc_server_send_remove_id.
+
+ Added also silc_server_send_notify_signoff to send the
+ SIGNOFF notify type.
+
+ * Employed the PKCS #1. It is the mandatory way to do RSA in the
+ SILC protocol from this day on. Changed the protocol
+ specification as well.
+
+ * Added silc_server_send_notify_topic_set to send TOPIC_SET
+ notify type. It is used between routers to notify about
+ topic changes on a channel.
+
+ * Added silc_id_dup into lib/silccore/id.[ch] to duplicate
+ ID data.
+
+ * Partly updated the protocol specification to comply with the
+ changes now made. It is still though a bit outdated.
+
+ * The JOIN notify type now takes one extra argument <Channel ID>.
+ The packet used to be destined to the channel but now the
+ JOIN type may be sent as list thus it is impossible to
+ destine it to any specific channel. By adding this argument
+ it is again possible.
+
+Wed Feb 21 22:39:30 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added CREDITS file. The CHANGES and CREDITS file will appear
+ in the distribution as well.
+
+Wed Feb 21 14:17:04 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Implemented CMODE_CHANGE, CUMODE_CHANGE and TOPIC_SET notify
+ types in the server's silcd/packet_receive.c.
+
+ * Implemented CMODE and CUMODE to work in router environment.
+
+ * Fixed minor encoding and decoding buglet from the
+ lib/silccore/silcmode.c.
+
+ * Fixed buffer overflow from lib/silcclient/command.c in USERS
+ command parsing.
+
+Wed Feb 21 12:44:00 EET 2001 Mika Boström <bostik@lut.fi>
+
+ * Changed all SilcConfigServer* and silc_config_server* to
+ SilcServerConfig* and silc_server_config*, respectively.
+ Patch by Bostik.
+
+Wed Feb 21 00:10:00 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Associated the ID (client or server ID) to the Authentication
+ Payload to avoid any possibility of forging. Updated the
+ protocol specification and the code accordingly.
+
+Tue Feb 20 14:14:14 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * The RSA key length is now save to the RsaKey context in the
+ key generation process in lib/silccrypt/rsa.c. The key length
+ is now used to figure out the maximum size of the block allowed
+ to be encrypted/signed.
+
+ * Added silc_mp_mp2bin_noalloc into lib/silcmath/mpbin.[ch]. It
+ is equivalent to the silc_mp_mp2bin but does not allocate any
+ memory.
+
+ * Changed silc_mp_mp2bin API to take length argument. If it is
+ non-zero then the buffer is allocated that large. If zero, then
+ the size is approximated using silc_mp_sizeinbase, which however
+ is not relieable.
+
+ * Created Global RNG API which is global RNG that application can
+ initialize. After initializing, any routine anywhere in the
+ code (including library) can use RNG without allocating a new
+ RNG object. This was done to allow this sort of use of the
+ RNG in code that has no chance to allocate RNG object. All
+ applications currently allocate this and many routines in the
+ library use this. Affected file lib/silccrypt/silcrng.[ch].
+
+ * Removed the RNG kludge from lib/silcmath/primegen.c and changed
+ it to use the Global RNG API.
+
+ * Defined Authentication Payload into protocol specification that
+ is used during SILC session to authenticate entities. It is
+ used for example by client to authenticate itself to the server
+ to obtain server operator privileges.
+
+ Implemented this payload into the lib/silccore/silcauth.[ch].
+ Implemented also routines for public key based authentication
+ as the new protocol specification dictates.
+
+ Moved definitions of different authentication methods from
+ lib/silccore/silcprotocol.h into lib/silccore/silcauth.h.
+
+ * Added silc_pkcs_encrypt, silc_pkcs_decrypt, silc_pkcs_sign,
+ silc_pkcs_verify and silc_pkcs_sign_with_hash and
+ silc_pkcs_verify_with_hash functions into the file
+ lib/silccrypt/silcpkcs.[ch].
+
+Mon Feb 19 19:59:28 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * The client entry's userinfo pointer must be always valid.
+ Otherwise the [<unknown>] bug will surface beacuse the WHOIS
+ will fail since it requires the userinfo. Now, the userinfo
+ is allocated as "" if actual userinfo does not exist. Actually,
+ it must exist and it is totally Ok to drop client connections
+ that does not announce the userinfo. However, we will make
+ this workaround for now.
+
+ * Added silc_net_get_remote_port into lib/silcutil/silcnet.[ch]
+ to return the remote port by socket.
+
+Mon Feb 19 14:26:49 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed SILC_SERVER_COMMAND_EXEC_PENDING macro to the name
+ SILC_SERVER_PENDING_EXEC and added an new macro
+ SILC_SERVER_PENDING_DESTRUCTOR which is called to free the
+ data or when error occurs while processing the pending command.
+
+ Added new argument `destructor' into silc_server_command_pending
+ and to the SilcServerCommandPending object. This destructor is
+ now called after calling the pending callback or if error occurs
+ immediately. If error occurs the actual pending callback won't
+ be called at all - only the destructor. The destructor may be
+ NULL if destructor is not needed.
+
+ All this applies for client library code as well. Similar
+ changes were made there as well for the pending commands.
+
+ In the client, the application must now allocate the
+ SilcClientCommandContext with the silc_client_command_alloc
+ function.
+
+ * Added reference counter to the SilcServerCommandContext. Added
+ function silc_server_command_alloc and silc_server_command_dup
+ functions.
+
+ Same type of functions added to the client library for the same
+ purpose as well.
+
+ * Removed the cmd_ident from IDListData away since it is now
+ global for all connections. It is the command identifier used
+ in command sending and with pending commands. The affected file
+ is silcd/idlist.h.
+
+ * Added reference counter to the SilcSocketConnection objecet to
+ indicate the usage count of the object. The object won't be
+ freed untill the reference counter hits zero. Currently only
+ server uses this, and client ignores it. The client must be
+ set to use this too later. The affected files are
+ lib/silccore/silcsockconn.[ch]. Added also the function
+ silc_socket_dup to increase the reference counter.
+
+ This was mainly added because it is possible that the socket
+ is removed underneath of pending command or other async
+ operation. Now it won't be free'd and proper DISCONNECTING
+ flags, etc. can be set to avoid sending data to connection that
+ is not valid anymore.
+
+ * Added SILC_SET_DISCONNECTING to server.c when EOF is read from
+ the connection. After that it sets SILC_SET_DISCONNECTED.
+ It is, however, possible that the socket data is not still freed.
+ The silc_server_packet_process now checks that data is not
+ read or written to connection that is DISCONNECTED. The socket
+ get's freed when the reference counter hits zero.
+
+Mon Feb 19 00:50:57 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed the client operation API: channel_message operation's
+ `sender' is now the client entry of the sender, not the nickname
+ and the `channel' is the channel entry, not the channel name.
+
+ In the private_message operation the `sender' is now also the
+ client entry of the sender not the nickname.
+
+ Affected file is lib/silcclient/ops.h and all applications
+ using the client operations.
+
+Sat Feb 17 22:11:50 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Moved the calling of ops->connect() from connect_to_server_final
+ into receive_new_id functin since that is the point when the
+ client is actually allowed to send traffic to network. The
+ affected file is lib/silcclient/client.c.
+
+Sat Feb 17 13:15:35 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * When receiving NEW_CHANNEL_LIST, NEW_CHANNEL_USER_LIST,
+ NEW_ID_LIST and SET_MODE_LIST packets, broadcast the list packet
+ (if needs broadcasting) instead of broadcasting the packets one
+ by one which would make a burst in the network traffic.
+
+ * Added `broadcast' argument to the functions in silcd/server.[ch]
+ silc_server_create_new_channel[_with_id] to indicate whether
+ to send New Channel packet to primary router.
+
+Sat Feb 17 01:06:44 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new function into the silcd/server.[ch] files:
+ silc_server_create_new_channel_with_id to create new channel with
+ already existing Channel ID.
+
+ * Added new packet type SILC_PACKET_SET_MODE_LIST into the file
+ lib/silccore/silcpacket.h. This packet is used t send list of
+ Set Mode payloads inside one packet. Server uses this to set
+ the modes for the channels and clients on those channels, that it
+ announced to the router when it connected to it. The protocol
+ specification has been updated accordingly.
+
+ * The silc_server_new_channel did not handle the packet coming
+ from normal server as it normally does not send that. However,
+ when it announces its channels it does send it. Implemented
+ the support for that.
+
+ * Added SILC_ID_CHANNEL_COMPARE macro to compare to Channel ID's
+ into the file lib/silccore/id.h.
+
+Fri Feb 16 23:57:29 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed memory leaks in the functions silc_idlist_del_client,
+ silc_idlist_del_channel and silc_idlist_del_server in the file
+ silcd/idlist.c. All of those leaked like a sieve.
+
+ * Fixed some small memory leaks in the client's function
+ silc_client_notify_by_server.
+
+ * Added functions into silcd/server.c: silc_server_announce_clients,
+ silc_server_announce_channels and silc_server_announce_server.
+ These functions are used by normal and router server to announce
+ to its primary router about clients, channels and servers (when
+ router) that we own. This is done after we've connected to the
+ router.
+
+ These functions effectively implements the following packet types:
+ SILC_PACKET_NEW_CHANNEL_LIST, SILC_PACKET_NEW_CHANNEL_USER_LIST
+ and SILC_PACKET_NEW_ID_LIST.
+
+ * Added new functions into the silcd/packet_receive.[ch]:
+ silc_server_new_id_list, silc_server_new_channel_list and
+ silc_server_new_channel_user_list to handle the incoming
+ NEW_ID_LIST, NEW_CHANNEL_LIST and NEW_CHANNEL_USER_LIST packets.
+
+ * Added support of changing Channel ID in the function
+ silc_server_replace_id. If the server that announces a channel
+ to the router already exists in the router (with same name but
+ with different Channel ID), router is responsible to send
+ Replace ID packet to the server and force the server to change
+ the Channel ID to the one router has.
+
+ * Added new notify type SILC_NOTIFY_TYPE_CHANNEL_CHANGE to notify
+ client that the Channel ID has been changed by the router. The
+ normal server sends this to the client. Client must start using
+ the new Channel ID as the channel's ID.
+
+ Implemented handling of this new type into lib/silcclient/client.c
+ into the function silc_client_notify_by_server.
+
+ * Added new function silc_idlist_replace_channel_id into the files
+ silcd/idlist.[ch] to replace the Channel ID.
+
+Fri Feb 16 14:14:00 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Call silc_server_command_identify_check always when processing
+ the IDENTIFY command in silcd/command.c
+
+Thu Feb 15 20:07:37 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new packet type SILC_PACKET_HEARTBEAT that is used to
+ send keepalive packets. The packet can be sent by clients,
+ servers and routers.
+
+ Added function silc_socket_set_heartbeat into the file
+ lib/silccore/silcsockconn.[ch] to set the heartbeat timeout.
+ If not set, the heartbeat is not performed. The actual
+ heartbeat is implemented in the low level socket connection
+ library. However, application is responsible of actually
+ sending the packet.
+
+ Added silc_server_send_heartbeat to send the actual heartbeat
+ packet into silcd/packet_send.[ch]. Server now performs
+ keepalive with all connections.
+
+ * Added silc_task_get_first function into lib/silcutil/silctask.c
+ to return the timeout task with shortest timeout. There was a bug
+ in task unregistration that caused problems. TODO has been
+ updated to include that task system must be rewritten.
+
+ * The client library will now resolve the client information when
+ receiving JOIN notify from server for client that we know but
+ have incomplete information.
+
+ * Rewrote parts of silc_server_remove_from_channels and
+ silc_server_remove_from_one_channel as they did not remove the
+ channel in some circumstances even though they should've.
+
+ * Encryption problem encountered in server:
+
+ The LEAVE command used to send the Channel Key packet to the
+ router immediately after generating it. However, the code
+ had earlier sent Remove Channel user packet but not immediately,
+ ie. it was put to queue. The order of packets in the router
+ was that Channel Key packet was first and Remove Channel User
+ packet was second, even though they were encrypted in the
+ reverse order. For this reason, MAC check failed. Now, this
+ is fixed by not sending the Channel Key packet immediately but
+ putting it to queue. However, this is more fundamental problem:
+ packets that are in queue should actually not be encrypted
+ because packets that are sent immediately gets encrypted
+ actually with wrong IV (and thus MAC check fails). So, packets
+ that are in queue should be encrypted when they are sent to
+ the wire and not when they put to the queue.
+
+ However, the problem is that the current system has not been
+ designed to work that way. Instead, the packet is encrypted
+ as soon as possible and left to the queue. The queue is then
+ just purged into wire. There won't be any fixes for this
+ any time soon. So, the current semantic for packet sending
+ is as follows:
+
+ o If you send packet to remote host and do not force the send
+ (the packet will be in queue) then all subsequent packets to the
+ same remote host must also be put to the queue. Only after the
+ queue has been purged is it safe again to force the packet
+ send immediately.
+
+ o If you send all packets immediately then it safe to send
+ any of subsequent packets through the queue, however, after
+ the first packet is put to queue then any subsequent packets
+ must also be put to the queue.
+
+ Follow these rules and everything works fine.
+
+Thu Feb 15 14:24:32 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new function silc_server_remove_clients_by_server to
+ remove all client entries from ID list when the server connection
+ is lost. In this case it is also important to invalidate all
+ client entires as they hold the invalid server entry. This
+ fixes fatal bug when server has lost connection and will reconnect
+ again.
+
+Wed Feb 14 16:03:25 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Made some sanity checks to silc_server_daemonise like to check
+ whether the requested user and group actually exists.
+
+ * Added sanity check to SKE's silc_ske_responder_finish to check
+ that the public and private key actually is valid.
+
+ * Invalidate the client's nickname when receiving Replace ID
+ packet and the Client ID is being replaced. This means that the
+ server will query the nickname if someone needs it (client)
+ a bit later.
+
+ * Sort the ID Cache in client library when the ID Cache data
+ has changed (needs sorting).
+
+ * Do not allow for SILC client to create several connections to
+ several servers. The client does not support windows right now
+ and generating multiple connections causes weird behaviour.
+
+ Irssi-silc client does support windows and can handle several
+ connections without problems, see: www.irssi.org and SILC plugin.
+
+ * Fixed some places where client was added to the IDList. The
+ rule of thumb is following (in order to get everything right):
+ If the client is directly connected local client then the
+ `connection' argument must be set and `router' argument must be
+ NULL to silc_idlist_add_client function. If the client is not
+ directly connected client then the `router' argument must
+ bet set and the `connection' argument must be NULL to the
+ silc_idlist_add_client function.
+
+ * The funtion silc_server_packet_send_local_channel actually did
+ not check whether the client was locally connected or not. It
+ does that now. Fixed a bug related to LEAVE command.
+
+ * Fixed Remove Channel User payload parsing bug in server's
+ silcd/packet_receive.c. Fixed a bug related to LEAVE command.
+
+ * The server's silc_server_save_channel_key now checks also the
+ global ID list for the channel as it might not be in the local
+ list. Fixed a bug related to LEAVE command.
+
+ * Is this the end of the [<unknown>] buglet that has been lurking
+ around for a long time? A little for loop fix in server's
+ silc_server_command_whois_parse that is used by both IDENTIFY
+ and WHOIS command. At least, this was a clear bug and a cause
+ of one type of [<unknown>] buglet.
+
+ * WHOIS and IDENTIFY commands call the function
+ silc_server_command_[whois/identify]_check function even if
+ we are not router server.
+
+Tue Feb 13 19:55:59 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added --with-gmp configuration option. If set the GMP
+ is always compiled in the SILC source tree. If not set then
+ it is checked whether the system has the GMP3 installed. If
+ it has then the GMP won't be compiled (the system's headers
+ and library is used), if it doesn't have it then the GMP is
+ compiled in the SILC source tree.
+
+Mon Feb 12 11:20:32 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed RSA private exponent generation to what PKCS #1
+ suggests. We try to find the smallest possible d by doing
+ modinv(e, lcm(phi)) instead of modinv(e, phi). Note: this is
+ not security fix but optimization.
+
+Sun Feb 11 18:19:51 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new config entry [Identity] to fork the server and run
+ it as specific user and group. A patch from Bostik.
+
+ * Imported Dotconf configuration library into lib/dotconf.
+ This will be used to create the SILC configuration files later.
+ It will appear in the distsribution after this commit.
+
+Sat Feb 10 21:13:45 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * A big code auditing weekend happening. Auditing code for
+ obvious mistakes, bugs and errors. Also, removing any code
+ that is obsolete.
+
+ Removed files for being obsolete:
+
+ o lib/silcutil/silcbuffer.c (the buffer interface is entirely in
+ inline in the file lib/silcutil/silcbuffer.h)
+
+ o lib/silcutil/silcbufutil.c (the header has inline versions)
+
+ Changed code to fix possible error conditions:
+
+ o The buffer formatting routines now check that the destination
+ buffer really has enough space to add the data. This applies for
+ both buffer formatting and unformatting
+ (lib/silcutil/silcbuffmt.[ch]). Also, the entire buffer
+ unformatting was changed to accomodate following rules:
+ XXX_*STRING_ALLOC will allocate space for the data into the pointer
+ sent to the function while XXX_*STRING will not allocate or copy
+ the data into the buffer. Instead it sets the pointer from the
+ buffer into the pointer sent as argument (XXX_*STRING used to
+ require that the pointer must be allocated already). This change
+ makes this whole thing a bit more consistent and more optimized
+ (note that the data returned in the unformatting with XXX_*STRING
+ must not be freed now). The routines return now -1 on error.
+
+ o Tried to find all code that use buffer_format and buffer_unformat
+ and added return value checking to prevent formatting and
+ especially unformatting errors and possible subsequent fatal
+ errors.
+
+ o Changed ske->x and ske->KEY to mallocated pointers in
+ lib/silcske/silcske.h. Fixed possible data and memory leak.
+
+ o Added return value checking to all *_parse* functions. Fixed
+ many memory leaks as well.
+
+ o Added length argument to silc_id_str2id in lib/silccore/id.[ch]
+ so that buffer overflows would not happen. All code now also
+ checks the return value as it can fail.
+
+Mon Feb 5 20:08:30 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added reconnection support to server if the normal server looses
+ its connection to the router (for example if router is rebooted).
+ The server performs normal reconnection strategy implemented
+ to the server. Affected file silcd/server.c.
+
+Sun Feb 4 13:18:32 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added new packet type SILC_PACKET_SET_MODE that is used to
+ distribute the information about changed modes (for clients,
+ channels and clients channel modes) to all routers in the
+ network. Updated the protocol specification accordingly.
+
+ Added functions into silcd/packet_send.c and
+ silcd/packet_receive.c: silc_server_send_set_mode,
+ silc_server_set_mode.
+
+ Added new files silcmode.[ch] into lib/silccore that implements
+ the encoding and decoding of Set Mode Payload. Added new type
+ SilcSetModePayload. Moved the definitions of different modes
+ from lib/silccore/silcchannel.h into lib/silccore/silcmode.h.
+
+Sat Feb 3 15:44:54 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Oops, a little mistake in server's connection authentication
+ protocol. The protocol is not ended with FAILURE but with
+ SUCCESS if the authentication is Ok. :) Affected file is
+ silcd/protocol.c.
+
+ * Implemented NICK_CHANGE notify handling in server in the file
+ silcd/packet_receive.c The NICK_CHANGE notify is distributed to
+ the local clients on the channel. After the changing nickname
+ in router environment snhould work and the [<unknown>] nickname
+ should appear no more.
+
+ The silc_server_replace_id function that receives the Replace ID
+ payload now sends the NICK_CHANGE notify type also in the file
+ silcd/packet_receive.c
+
+ * Changed WHOIS and IDENTIFY command to support the maximum amount
+ of arguments defined in protocol specs (3328 arguments). This
+ fixed a bug that caused problems when there were more than three
+ users on a channel.
+
+Fri Feb 2 11:42:56 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added extra parameter, command identifier, to the
+ silc_client_send_command so that explicit command identifier
+ can be defined.
+
+ Changed that ID list routines uses specific command identifier
+ when sending WHOIS/IDENTIFY requests to the server so that they
+ can be identified when the reply comes back.
+
+ Affected files lib/silcclient/command.[ch],
+ lib/silcclient/client.c and lib/silcclient/idlist.[ch].
+
+ * Added `sender' argument to silc_server_packet_send_to_channel
+ to indicaet the sender who originally sent the packet to us
+ that we are now re-sending. Ignored if NULL. Affected file
+ silcd/packet_send.[ch].
+
+ * Added some server statistics support in silcd/server_internal.h
+ SilcServerStatistics structure and around the server code. Also
+ send some nice statistics information when client is connecting
+ to the client.
+
+Thu Feb 1 23:31:21 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed channel ID decoding in server's JOIN command reply in
+ silcd/command_reply.c
+
+ * Fixed braodcasting of replace ID payload to not to send it if
+ we are standalone server in silcd/packet_receive.c.
+
+ * Fixed all channel message sending routines to not to send
+ packets to clients that has router set, since they are routed
+ separately in the same function earlier. Affects file
+ silcd/packet_send.c and all channel packet sending functions.
+
+ * In USERS reply, res_argv[i] are not allocated, the table
+ is allocated. Thus changed that free the table, not its
+ internals.
+
+ * In server's whois_check and identify_check if the client is
+ locally connected do not send any WHOIS commands - they are not
+ needed.
+
+Thu Feb 1 21:32:27 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed some minor bugs in client when sending WHOIS command. The
+ arguments was in wrong order.
+
+ * Removed statis function add_to_channel from server in
+ silcd/command.c that was previously used with the joining but
+ is obsolete now.
+
+ * Tested USERS command in router environment successfully with two
+ routers, two servers and two clients.
+
+Thu Feb 1 00:54:26 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Reorganized the USERS command and command reply in client library
+ in lib/silcclient/command.c and lib/silcclient/command_reply.c.
+ When the command is given by user we register a pending command
+ callback that will reprocess the command after the reply has been
+ received from the server. When reprocessing the packet we then
+ display the information. Thus, the USERS information is displayed
+ now in the command callback instead of in the command reply
+ callback. The processing of the command is same as previously
+ when server has sent the command reply in the JOINing process.
+
+ * Added to USERS command in silcd/command_reply.c to join the client,
+ we didn't use to know about, to the channel after we've created
+ a client entry for it. Also, for clienet we did know already still
+ check whether it is on the channel or not and add it if not.
+
+ * Removed silc_server_command_join_notify as the function and its
+ use was obsolete.
+
+Tue Jan 30 22:39:15 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed the client's pending command handling to the same as the
+ server's pending command handling. It is also now possible to
+ execute command reply functions from other command reply
+ function as the function callbacks for commands and command
+ replies are one and same. The pending commands are not static
+ list anymore, it is mallocated SilcDList in lib/silcclient/client.h
+ in client connection context. Thus, pending commands are server
+ connection specific as it is convenient.
+
+ Changed the function silc_client_command_pending and
+ silc_client_command_pending_del and added new function
+ silc_client_command_pending_check. Removed the
+ SILC_CLIENT_CMD_REPLY_EXEC, and SILC_CLIENT_PENDING_COMMAND_CHECK
+ macros.
+
+ * Added cmd_ident, current command identifier, to the client
+ connection context in lib/silcclient/client.h to keep track on
+ command identifiers used in command sending. Client's command reply
+ function handling now supports the mandatory command identifiers.
+
+ * Added SILC_CLIENT_COMMAND_EXEC_PENDING macros to all command reply
+ funtions in client to fully support pending command callbacks.
+
+ * NOTE: the name_list in USERS (old NAMES) command is NOT sent anymore
+ as one of the arguments to the application in the command reply
+ client operation.
+
+ * NOTE: The FORWARDED flag is depracated. It used to be depracated
+ before first releasing SILC but came back. Now it is removed again
+ and should come back nomore. The FORWARDED flag was used only
+ by the JOINing procedure by forwarding the command packet to router.
+ Now, the JOINing procedure has been changed to more generic (due
+ to various router environment issues) and FORWARDED is not needed
+ anymore for anything. The protocol specification is yet to be
+ updated.
+
+ Now, removed silc_server_packet_forward from server and the flag
+ SILC_PACKET_FORWARDED from lib/silccore/silcpacket.h.
+
+Tue Jan 30 00:05:05 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Renamed NAMES command to USERS command. The NAMES was named that
+ due to historical reasons. Now it is renamed. Also, rewrote
+ parts of the USERS command. The nickname list is not sent anymore
+ by the server. Only Client ID and mode lists are sent in the USERS
+ command. Changed this also to the protocol specification.
+
+ The client now resolves the names and stuff after it receives
+ the USERS list from the server when joining to the channel.
+
+ * WHOIS and IDENTIFY commands has been changed to support multiple
+ Client ID's per command. One can now search for multiple users
+ in the network by sending only one WHOIS or IDENTIFY command.
+ Changed the code and the protocol specifications.
+
+ * Removed silc_server_command_identify_parse and changed that IDENTIFY
+ uses silc_server_command_whois_parse to parse the request. */
+
+ * If normal server, do not parse the WHOIS and IDENTIFY requests
+ before sending it to the router. Saves some time.
+
+Sun Jan 28 16:19:49 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed JOIN command on client library. Wrong number of arguments
+ used to crash the client.
+
+ * Added silc_server_channel_has_global function to check whether
+ channel has global users or not.
+
+ * Added silc_server_channel_has_local function to check whether channel
+ has locally connected clients on the channel.
+
+ * The silc_server_remove_from_one_channel now checks whether the
+ channel has global users or not after given client was removed from
+ the channel. It also checks whether the channel has local clients
+ on the channel anymore. If it does not have then the channel entry
+ is removed as it is not needed anymore.
+
+ * The silc_server_notify now checks on JOIN notify whether the joining
+ client is one of locally connected or global. If it is global then
+ the channel has now global users on the channel and that is marked
+ to the channel entry. Also, it now saves the global client to
+ global list who is joining and JOINs it to the channel. This is
+ for normal server, that is.
+
+ Changed silc_server_send_notify_on_channel,
+ silc_server_packet_relay_to_channel and
+ silc_server_packet_send_to_channel check if we are normal server
+ and client has router set (ie. global client) do not send the
+ message to that client, as it is already routed to our router.
+
+ * Implemented LEAVE notify type handling in silc_server_notify
+ function.
+
+ * Tested LEAVE command in router environment successfully. Tested
+ with two routers, two servers and two clients.
+
+ * Updated TODO.
+
+ * idlist_find_xxx_by_id routines now dumps the ID on the debug mode.
+
+ * Implemented SIGNOFF notify type handling in silc_server_notify
+ function.
+
+ * silc_server_remove_id now removes the client entry from all channels
+ it has joined and thusly sends SIGNOFF notify type.
+
+ * Rewrote the NAMES list generation in server by removing two excess
+ loops. The lists are created now inside one loop.
+
+Sat Jan 27 22:34:56 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * silc_server_remove_channel_user checks now also global list
+ for channel and client.
+
+ * silc_server_new_channel_user checks now both local and global
+ list for channel and client. Fixed a bug in client id decoding.
+ Used to decode wrong buffer.
+
+ * silc_server_channel_message checks now both local and global
+ list for channel entry.
+
+ * Tested channel joining (hence JOIN) in router environment
+ successfully. Tested with two routers, two servers and two
+ clients.
+
+ * Tested channel message sending in router environment successfully.
+
+Thu Jan 11 03:22:57 EET 2001 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added silc_server_save_channel_key into server.[ch] to save the
+ received channel key in Channel Key payload processing. It is
+ also used in JOIN command reply handling.
+
+ Equivalent function silc_client_save_channel_key added into
+ client.[ch] into client library.
+
+ * Changed JOIN command reply to send information whether the channel
+ was created or not (is existing already) and the channel key
+ payload. Changed protocol specs accordingly.
+
+ * Fixed bugs in WHOIS and IDENTIFY command reply sending when
+ the request was sent by ID and not by nickname. Crashed on
+ NULL dereference.
+
+Sat Dec 23 21:55:07 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed a bug in Client library. IDENTIFY and WHOIS reply functions
+ now correctly save the received data.
+
+ * silc_server_free_sock_user_data now notifies routers in the
+ network about entities leaving the network.
+
+ At the same time implemented functions silc_server_remove_id
+ and silc_server_send_remove_id to receive and send REMOVE_ID
+ packets. The packet is used to notify routers in the network
+ about leaving entities. The ID removed will become invalid in
+ the network.
+
+ * Added function silc_idlist_del_server into server. Removes and
+ free's server entry from ID list.
+
+ * silc_server_private_message function now checks, if we are router,
+ that the destination ID really is valid ID, naturally.
+
+ * In router when NEW_ID packet is received (for new client) the
+ hash of the Client ID is saved in the ID Cache but the
+ client->nickname is set to NULL, instead of putting the hash
+ to it as well.
+
+ IDENTIFY command now also checks that client->nickname must be
+ valid. If it is not if will request the data from the server who
+ owns the client. Added new function
+ silc_server_command_identify_check.
+
+ * Added silc_command_set_command into lib/silccore/silcommand.[ch]
+ to set the command to already allocated Command Payload.
+
+ * Tested private message sending in router environment with two
+ routers, two servers and two clients. Fixed minor bugs and now
+ it works fine.
+
+ * Fixed segfault from client's NAMES command. Used to crash if
+ not on any channel.
+
+ * Forwarded packets must not be routed even if it is not destined
+ to the receiver. Changed server code comply with this.
+
+Sun Dec 17 14:40:08 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added `require_reverse_mapping' boolean value to ServerParams
+ structure. If TRUE (not default) the server will require that
+ the connecting host has fully qualified domain name.
+
+ If the reverse mapping is not required and hostname could not be
+ found the IP address is used as hostname.
+
+Sat Dec 16 17:39:54 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Implemented version string checking to both client and server.
+ The check is incomplete currently due to the abnormal version
+ strings used in development version of SILC.
+
+ * Changed all command functions in server to use the new
+ CHECK_ARGS macro.
+
+Fri Dec 15 15:55:12 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed char *data to unsigned char *data in ID Cache system to
+ support binary data as ID Cache data. Changed code to support
+ binary data in lib/silccore/idcache.c.
+
+ * Renamed silc_server_packet_relay_command_reply to
+ silc_server_command_reply as it is normal packet receiving
+ function. Rewrote the function to accept command replys for
+ servers and not only for clients.
+
+ * Mark remote router always as registered server if we are connecting
+ to it. Otherwise, commands sent by the router to us are ignored.
+
+ * All ID List find routines now returns the ID Cache Entry pointer
+ as well if requested.
+
+ * WHOIS command works now in router environment, tested with two
+ routers, two servers and two clients.
+
+ * Cleaned up and rewrote IDENTIFY command. IDENTIFY should work now
+ in router environment (as it is almost equivalent to WHOIS) but
+ hasn't been tested thoroughly. Added new functions:
+
+ silc_server_command_identify_parse
+ silc_server_command_identify_send_reply
+ silc_server_command_identify_from_client
+ silc_server_command_identify_from_server
+
+ * Disabled route cache adding because adding two different ID's with
+ same IP replaces the old cache entry thus giving wrong route.
+ The entry->router->connection is always the fastest route anyway
+ so route cache may not be needed. Of course, new routes maybe
+ established after receiving the ID when the entry->router->connection
+ might not be anymore the most optimal.
+
+Thu Dec 14 15:55:35 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Add route cache for received ID for fast routing.
+
+ * Added silc_server_packet_route to route received packet on router
+ that is not destined to us.
+
+ * Renamed silc_server_get_route to silc_server_route_get.
+
+ * Added id_string and id_string_len fields into SilcServer to
+ include encoded ServerID for fast comparing without excess
+ encoding of the ID's.
+
+ * Cleaned up WHOIS command on server side. Added following static
+ functions:
+
+ silc_server_command_whois_parse
+ silc_server_command_whois_check
+ silc_server_command_whois_send_reply
+ silc_server_command_whois_from_client
+ silc_server_command_whois_from_server
+
+ * Added macro SILC_SERVER_COMMAND_CHECK_ARGC to check mandatory
+ arguments in command replies. All command functions should be
+ updated to use this macro.
+
+Sun Dec 10 23:52:00 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Minor typo fixes on command reply handling on server.
+
+Tue Nov 28 11:05:39 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added silc_server_command_add_to_channel internal routine to add
+ the client to the channel after router has created the channel and
+ sent command reply to the server.
+
+ * Added generic silc_server_send_command to send any command from
+ server.
+
+ * Use static buffer with ID rendering instead of duplicating data.
+
+Mon Nov 27 21:39:40 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed a channel user mode bug when joining to a channel server gave
+ everybody channel founder rights, oops.
+
+ * We mark ourselves as the router of the incoming server connection
+ if we are router ourselves. This way we can check in some packet
+ sending functions whether it is locally connected server. For
+ incoming router connections we put NULL.
+
+ * For router sending packets locally means now always sending the
+ packet cell wide; to local clients and local servers. For normal
+ server sending packet locally means sending it to only local
+ clients.
+
+ * Fixed the JOIN command to really work in router environment. If the
+ channel is created it is always created by the router. Router is
+ also responsible of making the initial joining to the channel,
+ sending JOIN notify to the sending server and distributing
+ NEW_CHANNEL and NEW_CHANNEL_USER packets. Hence, if the channel
+ does not exist server doesn't do anything else but forward the
+ command to the router which performs everything.
+
+ * Added silc_server_send_channel_key function to send the Channel Key
+ payload.
+
+ * Added silc_server_create_channel_key to create new channel key. The
+ channel key is now re-generated everytime someone joins or leaves
+ a channel, as protocol dictates. Note: channel->key_len is the
+ key length in bits.
+
+Wed Nov 22 22:14:19 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Splitted server.[ch] finally. Created now packet_send.[ch] and
+ packet_receive.[ch] to separate packet sending and receiving
+ routines. The server.[ch] now includes everything else including
+ actual packet processing (writing and reading data) and other
+ server issues.
+
+ Renamed silc_server_private_message_send_internal to
+ silc_server_send_private_message. The routine is still though
+ used only to relay private messages as server does not send
+ private messages itself.
+
+ Renamed silc_server_new_channel to silc_server_create_new_channel
+ and added new function sicl_server_new_channel that handles the
+ incoming New Channel packet. Added also new sending function
+ silc_server_send_new_channel to send New Channel Payload.
+
+ * Added new function silc_server_notify to process incoming notify
+ packet to the server/router. Server may then relay the notify
+ to clients if needed.
+
+ * Added new function silc_server_new_channel_user to process incoming
+ New Channel User packet. Router will redistribute the packet and
+ send JOIN notify to its local clients and locally connected servers
+ if needed. Normal server will send JOIN notify to its local client
+ on same channel when received this packet. Added also corresponding
+ sending function silc_server_send_new_channel_user to sent the
+ payload.
+
+ * Added boolean route argument to send_notif_to_channel and
+ packet_send_to_channel functions to attempt to route the packet
+ if it is TRUE and send only locally if it is FALSE.
+
+Tue Nov 21 19:49:31 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * silc_server_replace_id now broadcasts the received replace ID
+ packet if it is not broadcast packet already. The router must
+ broadcast to inform other routers about changed ID.
+
+ * Added backpointer to server's router into SilcServer context in
+ silcd/server_internal.h.
+
+ * Fixed silc_server_packet_broadcast to send correct broadcast
+ packets.
+
+ * The channel key is now distributed to the local client as soon
+ as it is received from the router (in router environment) so that
+ no other packet may be sent for the channel until client has
+ received the key.
+
+ * silc_server_remove_channel_user now broadcasts the received
+ Remove Channel User packet if it is not broadcast packet already.
+ The router must broadcast to inform other routers about removed
+ channel user.
+
+ * Added users field into SilcPacketContext that is a reference count
+ of the context. One can increase the reference count by calling
+ silc_packet_context_dup which is now changed to just increase the
+ reference count instead of duplicating the data. The reference
+ count is decresed by calling silc_packet_context_free that will
+ free the data after the reference count hits zero.
+
+ For now on the packet context and everything allocated into it
+ (including the raw packet from network) must be freed by calling
+ the new silc_packet_context_free function. Added also new function
+ silc_packet_context_alloc that must be used now to allocate the
+ context. This also means that if a routine is asynchronous from
+ silc_[client/server]_packet_parse_type the packet context must
+ be duplicated by calling silc_packet_context_dup. Otherwise it
+ gets free'd after silc_[client/server]_packet_parse_type returns.
+ Also, one must remember that if packet is duplicated then its
+ reference count must be decresed by calling the free function as
+ many times as it was duplicated.
+
+ * Changed SilcBuffer field from protocol contexts to SilcPacketContext
+ from both client and server.
+
+Mon Nov 20 23:47:03 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Made joining to a channel working in router environment.
+
+ * Cleaned up JOIN command on server side and create function
+ silc_server_command_join_channel internal routine to make the
+ joining happen.
+
+Thu Nov 9 21:12:39 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed silc_command_pending list to SilcDList. Also, added
+ `ident' field to SilcServerCommandPending structure to identify
+ the reply and to call correct callback.
+
+ Added silc_server_command_pending_check function to replace the
+ corresnponding macro. The silc_command_pending list is not
+ extern anymore.
+
+ * Added silc_command_set_ident into lib/silccore/silccommand.[ch]
+ to set identifier to previously allocated Command Payload. It
+ is used to set identifier for command when resending Command
+ Payload.
+
+ * Added silc_command_payload_encode_payload to encode Command
+ Payload buffer from SilcCommandPayload structure.
+
+ * Added silc_argument_payload_encode_payload to encode Argument
+ payload buffer from SilcArgumentPayload structure.
+
+Wed Nov 8 21:03:28 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed WHOIS command to support router connection on server side.
+ The whois request is always sent to router unless the server is
+ standalone server. After server has received the reply from the
+ router will it send the reply to the client.
+
+ * Added silc_server_packet_broadcast into silcd/server.[ch] to
+ broadcast received broadcast packet. The function is used only
+ by router. The broadcast packet is always sent to the router's
+ primary route.
+
+ * Added silc_id_render function in lib/silcutil/silcutil.[ch] to
+ render given ID to printable string, for log files for example.
+
+Tue Nov 7 22:14:19 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Made basic router to router connections working. At least they
+ can now connect to each other but nothing really works the way
+ they are supposed - yet.
+
+ * Added new initiator token to RouterConnection configuration
+ file in silcd/serverconfig.[ch]. It is used to tell whether we
+ are the initiator to the remote router or whether we'll expect
+ the other end to connect.
+
+ * Moved registering of listener task to silc_server_init, hence
+ the server starts listenning as soon as it is run, even if it
+ does not have connections to other routers. Let's see how well
+ this will work.
+
+ * Changed default connection retry timeouts for more suitable in
+ silcd/server.h.
+
+ * Removed cipher and such arguments from silc_idlist_add_client
+ and silc_idlist_add_server prototypes from silcd/idlist.[ch].
+ Added new function silc_idlist_add_data to add the keys and stuff
+ to any ID entry.
+
+ * Added SilcIDListData structure and added it to SilcClientEntry
+ and SilcServerEntry as their first field in the structure. This
+ way we can explicitly cast the ID entries to the SilcIDListData
+ structure and get common data for the entries. In past, we had
+ to first check what type of connection it is and then cast it to
+ correct ID entry type. Now, we can directly cast the opaque
+ pointer to the SilcIDListData (no matter what ID entry it actually
+ is) and get the data needed.
+
+Mon Nov 6 21:56:12 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Wow, found a bug in scheduler. The scheduler uninitialized itself
+ in some circumstances even if threre were timeout tasks, though not
+ IO tasks, but tasks anyway. Now fixed.
+
+ * Defined SilcServerConnection structure to hold connection specific
+ stuff about directly connected servers and routers. The definition
+ is currently in silcd/server_internal.h. I thought about having
+ a bit more important role fro this struct but for now it is used
+ only when connecting to other server (or router actually).
+
+ * Added connecting retry support in server when connecting to
+ router(s). The retry feature implement exponential backoff
+ algorithm. Also, added SilcServerParams structure to hold default
+ parameters for server. For now, it include these retry settings
+ and are hard coded. After server is moded to be as Silc Server
+ Library this structure will be more important.
+
+Sun Nov 5 22:28:44 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed client librarys channel->clients table to SilcList and
+ changed code accordingly.
+
+Thu Nov 2 16:28:01 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed client's channel table to SilcList and changed code
+ accordingly. Also changed SilcChannelClientEntry to include back-
+ pointer to the channel so that client entry can use that structure
+ as list as well and we have fast cross-reference to the channel.
+ This change dramatically decreased the complexity of channel
+ handling with client entry and vice versa (removed one extra
+ loop when searching for channel entry from many functions).
+
+ * Changed server->sim from table to SilcDList and changed code
+ accordingly.
+
+ * NAMES command can now be used from user interface. It will show
+ the user list on the channel, neatly.
+
+ * Added realname pointer to SilcClientEntry in lib/silcclient/idlist.h.
+ Code now saves realname of the user if it becomes available.
+
+ * Renamed configure.in to configure.in.pre and made ./prepare
+ script to automatically add correct version string to
+ configure.in which it creates from configure.in.pre.
+
+Wed Nov 1 17:21:26 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * NAMES command reply now shows users mode with the nickname when
+ joining to channel.
+
+ * Moved silc_client_ch[u]mode[_char] functions from
+ silc/clientutil.[ch] to lib/silcclient/client.[ch]. Though, that
+ place sucks, they are utility functions and should be in some
+ other file.
+
+ * Fixed some unsigned int's to unsigned short's. Patch by cras.
+
+ * Fixed contrib/getopt*.[ch] to not require config.h. Patch by
+ cras.
+
+Tue Oct 31 20:10:37 EET 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Updated README.
+
+ * Added TRQ (efficient deque and list library) into lib/trq. This is
+ a very good list library that is currently used in the SILC. Defined
+ SilcList API over the library because I didn't like the API very
+ much. See lib/trq/silclist.h for the API and examples of how to
+ use the API. Fixed various places in the code to use the new
+ SilcList API. The SilcList is meant for lists that has a structure
+ already defined as a list. It is not suitable to add just some
+ context to the list (in TRQ, the context is the list actually).
+
+ So, I defined SilcDList that can be used for the purpose where
+ predefined list structure does not exit. This can be used as
+ such list. Now some context just can be added to the SilcDList.
+ Currently this list is not used in the SILC just yet, though there
+ are a lot places where this can replace dynamically allocated
+ tables and I will fix these places, later, to use SilcDList.
+ See lib/trq/silcdlist.h for SilcDList (they are all inline functions,
+ and use TRQ internally).
+
+ Also fixed some annoying warning messages that the original TRQ
+ code generated. Also minor changes to TRQ's Makefile.in.
+
+ * Added support for querying by Client ID to both WHOIS and
+ IDENTIFY commands into server, as required by the protocol.
+
+ * Removed method function pointers from SilcBuffer structure. They
+ weren't used to anything and just increased the context size for
+ no good reason. This change also made silc_buffer_alloc and
+ silc_buffer_free functions inline functions.
+
+ * Disabled command flooding detection support until it's fixed so
+ that it accepts commands in but does not execute them more than once
+ in two seconds.
+
+ * Added silc_net_localhost(), to return local hostname, into
+ lib/silcutil/silcnet.[ch]. Also added client->hostname pointer
+ that must be initialized before calling silc_client_init.
+
+ * Added new function: silc_server_send_notify_on_channels to send
+ notify messages to all channels client has joined. It is assured
+ that the message is sent only once per client.
+
+ * Moved silc_log_format (from lib/silcutil/silclog.[ch] into
+ lib/silcutil/silcutil.[ch] as silc_format function. The new
+ function is generic and is used by server as well, not only by
+ the logging routines.
+
+ * Added new SKE status type: SILC_SKE_STATUS_BAD_VERSION to indicate
+ the provided version string was not acceptable. Added new function:
+ silc_ske_check_version into lib/silcske/silcske.h. The function
+ must be implemented by the application (client or server) and it
+ does not reside in the SKE library. The function checks the version
+ string remote end sent.
+
+ * Added back pointers (to opaque context and to SilcSocketConnection)
+ into SilcPacketContext structure into lib/silccore/silcpacket.h.
+
+ * Added silc_packet_context_dup into lib/silccore/silcpacket.[ch] to
+ duplicate packet context structure.
+
+ * Changed `notify' client operation to send same arguments as client
+ receives from server except for ID's. ID's are mapped to correct
+ ID entry and that is returned. Also, if channel entry is not sent
+ by server but the notify is for channel the channel entry is sent
+ to application (otherwise application doesn't know that it is for
+ channel (library gets it from packet's Destination ID)).
+
+ * Added silc_client_remove_from_channels into client library to
+ remove a client from all channels it has joined to. Used when
+ received SIGNOFF notify from server. Added also new function
+ silc_client_replace_from_channels to replace old ID entry with
+ new ID entry on all channels. Used when received NICK_CHANGE
+ notify from server.
+
+ * Fixed ID Cache list handling in silc_idlist_get_client in
+ lib/silcclient/idlist.c. Also, added silc_idlist_get_client_by_id
+ to get (or query) client by ID.
+
+ * Updated TODO list.
+
+ * Added connection authentication status message defined by the
+ protocol: SILC_CONN_AUTH_OK and SILC_CONN_AUTH_FAILED and added the
+ support for these into the code in client and server side.
+
+ * Added generic function silc_client_send_command to send any command
+ with variable argument list. Application should use this function
+ to send commands if the command functions provided by the library
+ does not suite for the application's user interface needs.
+
+ * Added new `failure' client operation. Application is notified about
+ received failure packet if client is executing a protocol. In this
+ case the protocol's execution has failed.
+
+ * Added SKE's end notify to send the SKE_SUCCESS notify message that
+ is required by the protocol.
+
+ * Added SILC_PROTOCOL_STATE_FAILURE to indicate received failure
+ packet from remote. SILC_PROTOCOL_STATE_ERROR indicates local
+ error at our end.
+
+ * Added status flag to SilcSKE object to indicate realtime status
+ of the SKE protocol.
+
+ * Application receives now exactly same command reply arguments as
+ the library receives from server. However, if ID is received the
+ corresponding ID entry is returned to the application (eg. Client
+ ID is mapped to correct SilcClientEntry entry and that is returned).
+ Changed command_reply client operation due to this change.
+
+ * Changed all ID's in commands and in command replys as ID Payloads.
+ Change affected both client and server side codes.
+
+ All ID's sent in SILC network (with execption of ID's in SILC
+ Packet header) are sent in ID Payload to support variable length
+ ID's.
+
+ * Server now notifies nick changes and notifies all clients on
+ the channels about the new nickname (about the new Client ID,
+ actually).
+
+ * Implemented CMODE command to change channel modes. Supports all
+ channel modes defined by the protocol specs except ban and invite
+ lists. (Also, private channel key mode is supported but support for
+ setting private channel key in client is missing, thus, this mode
+ has no effect on client side (except that server requires that the
+ client uses private channel key and normal channel traffic does not
+ work anymore)).
+
+ Also, invite mode works per se, but INVITE command does not work
+ yet correctly, so you can set channel as invite only channel but
+ inviting clients to the channel does not work (it is yet to be
+ thought what's the best way to do it).
+
+ * Added new command SILC_COMMAND_CUMODE to change user mode on the
+ channel. Defined user modes: CHANNEL_FOUNDER and CHANNEL_OPERATOR.
+ Implemented CUMODE command to change user's mode on the channel.
+ Supports all modes defined by the protocol specs.
+
+ * Added NAMES command reply to return users modes on the channel.
+
+ * Removed unnecessary and slow ciphers from lib/silccrypt.
+
+ * Set SO_KEEPALIVE option to connection sockets by default.
+
+ * Added new command reply status: SILC_STATUS_USER_NOT_ON_CHANNEL.
+
+ * Added notify types: MOTD, CMODE_CHANGE and CUMODE_CHANGE. Also,
+ redefined the Notify Payload into protocol specs.
+
+ * Added silc_id_payload_parse_id to get ID directly from raw
+ ID payload data.
+
+Mon Oct 9 20:57:02 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Changed SILC_COMMAND_IDENTIFY in protocol specification to
+ accept searching by Client ID as well.
+
+ * Added support for LEAVE and SIGNOFF notify types in client library.
+
+ * Added silc_id_payload_parse_data into lib/silccore/silcpayload.[ch]
+ to parse ID Payload from raw data.
+
+Sun Oct 8 19:33:08 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Added flags parameter into silc_ske_assemble_security_properties
+ function in lib/silcske/silcske.[ch].
+
+ * Changed notify client operation to fit better for notify messages
+ sent by server. The notify payload received from server is now
+ passed to the application (after parsing it to SilcNotifyPayload).
+ It is application's responsibility to retrieve the arguments
+ from the payload and show the message the way it wants. The message
+ sent by server is implementation specific.
+
+ * Changed public keys to comply with the protocol specification.
+ Old public keys are not supported anymore and are not compatible.
+
+ * Removed nickname from Channel Payload as the latest draft removed
+ it. The client must resolve the nickname from the NAMES command
+ reply received when it joined the channel.
+
+ Also, changed all channel_xxxx_payload to channel_payload_xxxx.
+
+Sat Oct 7 21:55:01 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
+ * Fixed some errors in protocol specification drafts.
+
+ * Created lib/silccore/silcnotify.c to implement Notify Payload
+ encoding and decoding, lib/silccore/silcpayload.[ch] to implement
+ generic payloads described by protocol specifications. The file
+ includes implementations for ID Payload and Argument Payload.
+
+ * Changed Command Payload implementation to use the new Argument
+ Payload. Changed command_xxxx_payload to command_payload_xxxx
+ to comply with SILC coding conventions.
+
+ * Added suppport for Argument Payload handling in Notify Payload
+ implementation as protocol requires it. Added the new support
+ into server and client lib as well.
+
+Thu Oct 5 21:16:28 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
* Added support for multiple nicknames on same channel. [n] is
added locally to the nickname if there are more than one same
* Changed version strings to comply ISO 8601.
-
Thu Oct 4 23:29:06 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
+
Wed Oct 4 23:29:06 EEST 2000 Pekka Riikonen <priikone@poseidon.pspt.fi>
* Fixed protocol error handling in client library. It should now
cope even if the SKE fails for some reason.
projects / silc.git / blobdiff