Mon Mar 26 14:39:48 EEST 2001 Pekka Riikonen * Show the version of the remote client (or server) when connecting to the server. It is logged to the log file. Affected file is silcd/protocol.c. * Fixed the KILLED notify handling in the client library. The client must be removed from all channels when receiving the KILLED notify. Also, do not remove the client entry when giving the KILL command but when the KILLED notify is received. Mon Mar 26 12:11:14 EEST 2001 Pekka Riikonen * Added silc_server_send_notify_invite to send the INVITE notify between routers. * Implemented the INVITE command correctly to the server. * Implemented the INVITE notify type handling in the server. * Implemented the INVITE command to the client library and on the user interface. Sun Mar 25 20:27:09 EEST 2001 Pekka Riikonen * Added function silc_server_get_client_resolve to find the client entry by ID from all ID lists and then resolve it (using WHOIS) if it cannot be found. Affected file is silcd/server.[ch]. Sun Mar 25 13:52:51 EEST 2001 Pekka Riikonen * Implemented the BAN command to the client library. * The JOIN command in the server now checks the invite list and the ban list. * Changed the silc_command_reply_payload_encode_va and the silc_command_payload_encode_va to support that if argument is NULL it ignores and checks the next argument. Affected file lib/silccore/silccommand.c. * Added silc_server_send_notify_ban to send the BAN notify type between routers. * Chaned the silc_notify_payload_encode to support that if argument is NULL it ignores and checks the next argument. Affected file lib/silccore/silcnotify.c. * Tested ban lists in router environment successfully. Sat Mar 24 14:47:25 EET 2001 Pekka Riikonen * Implemented BAN command to the server, in silcd/command.[ch]. * Removed the BAN and INVITE_LIST modes from the CMODE command in the server code. * Added function silc_string_match to regex match two strings. Affected files lib/silcutil/silcutil.[ch]. Fri Mar 23 22:02:40 EET 2001 Pekka Riikonen * Redefined parts of the SilcChannelEntry in the server to support the new ban and invite lists. Fri Mar 23 16:25:11 EET 2001 Pekka Riikonen * Redefined the INVITE command. The same command can be used to invite individuals to the channel but also to manage the invite list of the channel (to add to and remove from the invite list). Updated the protocol specs. * Added new command SILC_COMMAND_BAN that can be used to manage the ban list of the channel. Updated the protocol specs. * Removed the channel modes: the SILC_CMODE_BAN and the SILC_CMODE_INVITE_LIST as they were a bit kludge to be included in the CMODE command. The equivalent features are now available using INVITE and BAN commands. Updated the protocol specs. * Added new SILC_NOTIFY_TYPE_BAN notify type to notify routers in the network about change in the current ban list. The notify type is not used by the client. * Redefined parts of the SILC_NOTIFY_TYPE_INVITE command to support the invite lists. Thu Mar 22 22:52:23 EET 2001 Pekka Riikonen * Added new function silc_string_regexify that converts string including wildcard characters into regex string that can be used by the GNU regex library. Added into the file lib/silcutil/silcutil.[ch]. Added silc_string_regex_combine to combine to regex strings into one so that they can be used as one regex string by the GNU regex library. Added into the file lib/silcutil/silcutil.[ch]. Added silc_string_regex_match to match two strings. It returns TRUE if the strings match. Added into lib/silcutil/silcutil.[ch]. Thu Mar 22 15:29:42 EET 2001 Pekka Riikonen * Imported GNU regex to the soruce tree into lib/contrib. Fixed some compiler warning from the regex.c. Wed Mar 21 15:27:58 EET 2001 Pekka Riikonen * Fixed MOTD command in the server to work in router environment. * Fixed the MOTD command in the client library to support the server argument in the command. * Added `nickname_len' argument to the silc_idlist_add_client in the server, as the `nickname' argument may be binary data (it may be hash). * Added silc_idlist_get_channels to return all channels from the ID list. * Implemented LIST command to the server. Affected file is silcd/command.c. * Implemented the LIST command to the client library and on the user interface. * Added [] argument to the LIST command reply. With private channels the user count is not shown. * Updated TODO and README. Tue Mar 20 21:05:57 EET 2001 Pekka Riikonen * The client entry's data.registered must be TRUE even with global client entry on global client list. The data.registered is used to check whether the client is anymore in the network, for example with WHOWAS command so it must be valid. * Fixed the WHOWAS command in the server. It now actually works in router environment. Added function into silcd/command_reply.c silc_server_command_reply_whowas_save. * Added silc_idlist_purge function to the silcd/idlist.c to periodically purge the ID Cache. * Fixed INFO command in the server. It works now in router environment. Added argument to the INFO command reply. Updated the protocol specs. * Fixed minor bug in silc_idcache_purge to not purge if the expire value is zero. * Fixed various bugs in WHOIS and IDENTIFY command handling as they were buggy because of the WHOWAS information. * Fixed local command MSG to handle the async resolving of the remote client properly. It used to fail the first MSG. Affected file silc/local_command.c. * Added `data_len' field to SilcIDCache context. Tue Mar 20 16:29:00 EET 2001 Pekka Riikonen * Update TODO. Todo in commands in the server. Tue Mar 20 15:45:14 EET 2001 Pekka Riikonen * Added new notify type SILC_NOTIFY_TYPE_UMODE_CHANGE that is used by routers as broadcast packet to inform other routers about the changed user mode. Implemented the notify handling in the server. Affected file is silcd/packet_receive.c. Added the function silc_server_send_notify_umode to the silcd/packet_send.[ch]. * Added new generic Channel Payload and deprecated the New Channel Payload. The New Channel Payload is now the generic Channel Payload. * Added new argument `mode' to the silc_server_send_new_channel as it is required in the Channel Payload now. * Renamed the SilcChannelPayload to SilcChannelMessagePayload and created a new and real SilChannelPayload to represent the new generic Channel Payload. Implemented the encode/decode for Channel Payload. Affected file lib/silccore/silcchannel.[ch]. * Added silc_server_get_client_channel_list to return the list of channels the client has joined for WHOIS command reply. Affected file silcd/server.[ch]. * Implemented the channel list sending in the WHOIS command reply in server and in the client. Implemented the channel list displaying on the user interface as well. Affected file silc/client_ops.c. * Added silc_channel_payload_parse_list to parse list of Channel Payloads. It returns SilcDList list of SilcChannelPayloads. Client for example can use this function to parse the list of channels it receives in the WHOIS command reply. The caller must free the list by calling silc_channel_payload_list_free. Affected files lib/silccore/silcchannel.[ch]. Mon Mar 19 21:39:15 EET 2001 Pekka Riikonen * Added one new argument to the WHOIS command reply to return the mode of the user in SILC. Updated the protocol specs. Implemented it to the server and client. Mon Mar 19 18:43:06 EET 2001 Pekka Riikonen * Fixed the mode printing on the user interface on joining. Affected file silc/client_ops.c. * Implemented the UMODE command and user modes in general to the client library and to the user interface. * Implemented the UMODE command to the server. * The server now sends UNKNOWN_COMMAND error status if client sends unknown command. Affected file silcd/command.c. * All server commands now handle the command identifier the right way when sending the command reply to the client. The client can use to identify the command replies with the identifier. Mon Mar 19 16:13:07 EET 2001 Pekka Riikonen * Added silc_server_get_client_route to resolve the route to the client indicated by the client ID. Affected file is silcd/server.[ch]. * Added silc_server_relay_packet as general function to relay packet to arbitrary destination. This deprecates functions like _send_private_message_key, _relay_notify etc. Affected file is silcd/packet_send.[ch]. Removed silc_server_send_key_agreement, silc_server_send_private_message_key and silc_server_packet_relay_notify functions from the file silcd/packet_send.[ch]. * Updated TODO. * Implemented the SILC_NOTIFY_TYPE_KILLED notify handling in the server. Affected file silcd/packet_receive.[ch]. * Implemented the KILL command to the client. Implemented the SILC_NOTIFY_TYPE_KILLED notify handling in the client library. Affected files lib/silcclient/command[_reply].c and lib/silcclient/client_notify.c. Implemented the KILL notify printing in the user inteface. * Fixed a lot silc_parse_nick memory leaks from the client library in the file lib/silcclient/command.c. * Changed the silc_server_send_notify_on_channels's `sender' argument from SilcSocketConnection to SilcClientEntry to check the sender as entry and not as connection object and not to send to the client provided as argument. The affected file is silcd/packet_send.[ch]. * The notify packets that are destined directly to the client used to not to be processed by the server. Now changed that and the server processes all notify packets. After relaying the packet to the client the notify packet is processed in the server. * The silc_server_free_client_data now checks whether there is pending outgoing traffic for the client and purges the data to the network before removing the client entry. Sun Mar 18 21:02:47 EET 2001 Pekka Riikonen * Added SILC_NOTIFY_TYPE_KILLED notify type. It is sent when an client is killed from the SILC Network. Updated the protocol specs accordingly. Added new function silc_server_send_notify_killed to the silcd/packet_send.[ch]. * Added function silc_server_packet_relay_notify to relay notify packets that are destined directly to a client. In this case the server does not process the notify packets but merely relays it to the client. Affected file silcd/packet_send.[ch]. Added also silc_server_packet_process_relay_notify to check whereto relay the notify. Affected file is silcd/packet_receive.[ch]. * Implemented the KILL command to the server. * Updated TODO. * Added the backup schema desgined last fall to the protocol specs for everyone to see. The specification is in the *-spec-xx.txt draft and the packet type definitions for the backup routers is in *-pp-xx.txt draft. Thusly, added also new packet type SILC_PACKET_CELL_ROUTERS. * A big security problem in the implementation discovered. The signoff of an client did not cause new channel key generation which it of course should've done. The channel keys must be always re-generated when client leaves (or signoffs) the channel. The silc_server_remove_from_channels funtion now handles the channel key re-generation. * Added `sender' argument to the silc_server_send_notify_on_channels to not to send the client provided as argument. Affected file silcd/packet_send.[ch]. Fri Mar 16 15:52:49 EET 2001 Pekka Riikonen * Implemented OPER and SILCOPER commands into the server and the client library. * Added silc_auth_verify and silc_auth_verify_data to verify the authentication directly from the authentication payload. It supports verifying both passphrase and public key based authentication. Affected file lib/silccore/silcauth.[ch]. * Added `hash' field to the SilcIDListData structure. It is the hash negotiated in the SKE protocol. Affected file is silcd/idlist.[ch]. * Slight redesigning of the SilcAuthPayload handling routines. Do not send SilcPKCS but SilcPublicKey as argument. * Implemented the public key authentication support to the serverconfig. The public key is loaded fromthe provided path and saved as authentication data to void * pointer. Thus, changed the unsigned char *auth_data to void *auth_data; * Fixed SHUTDOWN command to send the reply before the server is shutdown. :) Affected file silcd/command.c. * Fixed fatal bug in CONNECT command. The hostname was invalid memory and server crashed. Affected file silcd/command.c. * Fixed fatal bug in CLOSE command. The server_entry became invalid but was referenced later in the command. Affected file silcd/command.c. Thu Mar 15 12:46:58 EET 2001 Pekka Riikonen * Fixed fatal bug in failure packet handling. Server ignored the failure and thus crashed when it came. * Updated TODO. Wed Mar 14 20:37:35 EET 2001 Pekka Riikonen * Added new SILC_CF_LAG_STRICT command flag that strictly forces that the command may be executed only once in (about) 2 seconds. The old SILC_CF_LAG flag is same but allows command bursts up to five before limiting. Added the support for CF_LAG and CF_LAG_STRICT flags to the server code. Various commands now includes the CF_LAG_STRICT flag to disallow any kind of miss-use of the command. * Fixed the silc_buffer_unformat to not to allocate any data if the length of the data is zero. It used to allocate the length + 1. Affected file lib/silcutil/silcbuffmt.c. Wed Mar 14 16:10:30 EET 2001 Pekka Riikonen * Changed the format of AdminConnection configuration section in the server. Added username of the admin to the format. Affected files silcd/serverconfig.[ch]. Added silc_server_config_find_admin into silcd/serverconfig.[ch] to return admin configuration data by host, username and/or nickname. Wed Mar 14 13:18:16 EET 2001 Pekka Riikonen * Implemented WHOWAS command to the server. Added the functions: silc_server_command_whowas_parse, silc_server_command_whowas_send_reply, silc_server_command_whowas_from_client and silc_server_command_whowas_from_server * Added argument to the WHOWAS command reply. Updated the protocol specs accordingly. * Implemented WHOWAS command and command_reply to the client library. Implemented the WHOWAS printing on the user interface. Tue Mar 13 22:17:34 EET 2001 Pekka Riikonen * Added new argument to the WHOWAS command reply, the real name. It is an optional argument. Updated the protocol specs. * Added SilcIDCacheDestructor callback that is registered when the SilcIDCache is allocated. The callback is called when an cache entry in the ID Cache expires, or is purged from the cache. Added into lib/silccore/idcache.[ch]. Added silc_idlist_client_destructor to the silcd/idlist.[ch] to destruct the client entries when the cache entry expires. Other ID Cache's in server and in the client library ignores the destructor. * If the ID Cache entry's `expire' field is zero then the entry never expires. Added boolean `expire' argument to the silc_idcache_add function in the lib/silccore/idcache.[ch]. If it is TRUE the default expiry value is used. * Added silc_server_free_client_data_timeout that is registered when client disconnects. By default for 5 minutes we preserve the client entry for history - for WHOWAS command. Tue Mar 13 13:26:18 EET 2001 Pekka Riikonen * Added support to the server to enforce that commands are not executed more than once in 2 seconds. If server receives commands from client more frequently, timeout is registered to process the commands. Affected file silcd/command.c. Added new function silc_server_command_process_timeout. * Changed NICK_NOTIFY handling in client library to check that if the client's nickname was changed, so there is no need to resolve anything from the server. * Removed error printing from the WHOIS and IDENTIFY commands. If error occurs then it is ignored silently in the client library. The application, however, may map the received error to human readable error string. The application currently maps the NO_SUCH_NICKNAME error to string. * Made the command status message public to the application. Moved them from lib/silcclient/command_reply.c to lib/silcclient/command_reply.h. The application can map the received command status to the string with the silc_client_command_status_message function. * Added check to the server to check that client's ID is same as the Source ID in the packet the client sent. They must match. Tue Mar 13 12:49:21 EET 2001 Pekka Riikonen * Added dist-bzip hook to the Makefile.am to make bzip2 compressed distributions. Mon Mar 12 18:43:38 EET 2001 Pekka Riikonen * Server now enforces the maximum length for the nickname and the channel as protocol specification dictates. 128 bytes for nickname and 256 bytes for channel name. * Moved the WHOIS printing to the application. The client libary does not print out the WHOIS information anymore, the application must do it. Renamed silc_client_command_reply_whois_print to the silc_client_command_reply_whois_save. The client's idle time is also sent to the application now, and the idle is shown on screen. * Added silc_client_command_reply_identify_save to save the received IDENTIFY entries. * Do not check for channel private keys in message sending and reception if the channel does not have the PRIVKEY mode set. Affected file lib/silclient/client_channel.c. Sun Mar 11 20:25:06 EET 2001 Pekka Riikonen * Fixed a minor bug if WHOIS and IDENTIFY command parsing that just surfaced after chaning the JOIN procedure. Sun Mar 11 14:59:05 EET 2001 Pekka Riikonen * Added silc_client_get_clients_by_list to get client entries from Client ID list, that is returned for example by JOIN and USERS command replies. The application should use this function for example when JOIN command reply is received to resolve the clients already on the channel (library does not do that anymore as USERS command reply is not used in the JOIN procedure anymore). Affected files lib/silcclient/silcapi.h and lib/silcclient/idlist.c. * JOIN command reply and USERS command reply returns now SilcBuffer pointers instead of unsigned char pointers when returning the client list and mode list. * Added argument to the JOIN command reply, mainly for the server to identify for which client the command was originally sent. Updated protocol specs accordingly. * Added SilcDlist private_key pointer to the SilcChannelEntry in the client to support the channel private keys. Affected file is lib/silcclient/idlist.h. * Added SilcChannelPrivateKey argument to the function silc_client_send_channel_message so that application can choose to use specific private ke if it wants to. If it is not provided, the normal channel key is used, unless private keys are set. In this case the first (key that was added first) is used as the encryption key. * Implemented the support for channel private key handling. Implemented the following functions: silc_client_add_channel_private_key, silc_client_del_channel_private_keys, silc_client_del_channel_private_key, silc_client_list_channel_private_keys and silc_client_free_channel_private_keys Affected file lib/silcclient/client_channel.c. * Added the support for the private keys in the channel message sending and encryption and in the message reception and decryption. Affected funtions are silc_client_send_channel_message and silc_client_channel_message. Sat Mar 10 21:36:22 EET 2001 Pekka Riikonen * Added SKE's key verify callback to the client library's KE protocol context. Affected files lib/silcclient/protocol.[ch]. * Removed the statement that server (or router) must send USERS command reply when joining to the channel so that the client knows who are on the channel. Instead, the client list and client's mode list is now sent in the JOIN command reply to the client who joined channel. This is better solution. * Added function silc_server_get_users_on_channel and function silc_server_save_users_on_channel to the silcd/server.[ch]. * Removed function silc_server_command_send_users from the silcd/command.c. * Do not show topic on the client library anymore. The topic is sent in the command reply notify to the application and the application must show the topic now. Sat Mar 10 00:07:37 EET 2001 Pekka Riikonen * Added client searching by nickname hash into the IDENTIFY and WHOIS commands in the server as they were clearly missing from them. Affected file is silcd/command.c. * Fixed a bug in private message receiving in the client library. The remote ID was freed and it wasn't supposed, now it is duplicated. Fri Mar 9 12:40:42 EET 2001 Pekka Riikonen * Minor fix to the channel payload; allocate the data area, as it needs to be of specific length. * If the key agreement port is zero then the operating system will define the bound port. Affected files are lib/silcclient/silcapi.h and lib/silcclient/client_keyagr.c. * Added new function silc_channel_payload_decrypt into the file lib/silccore/silcchannel.[ch]. * Moved the channel message etc, check from silc_packet_decrypt to applications. The library calls now a generic SilcPacketCheckDecrypt callback which is to return TRUE or FALSE when the packet is either normal or special. This was done to allow more wide range of checking that was not allowed when the code was in library. Now applications can do virtually any checks to the packet and return to the library the decision how the packet should be processed. Affected files are lib/silccore/silcpacket.[ch]. Added silc_server_packet_decrypt_check to the server and silc_client_packet_decrypt_check to the client library. * Added silc_server_packet_send_srcdest into silcd/packet_send.[ch] to send with specified source and destination information. * 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. * Fixed various commands in server to check also the global list for the channel entry and not just the local list. The affected file silcd/command.c. Thu Mar 8 21:39:03 EET 2001 Pekka Riikonen * 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 [] option from CMODE command as the cipher name decides the key length, nowadays. See the defined ciphers from the protocol specification. * Added [] option to the CMODE command to define the HMAC for the channel. Added SILC_CMODE_HMAC channel mode. * Added [] 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 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. Wed Mar 7 20:58:50 EET 2001 Pekka Riikonen * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * Updated parts of the protocol specification to keep it up to date. Thu Feb 22 15:08:20 EET 2001 Pekka Riikonen * 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 . 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 * 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 * 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 * 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 * 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 * 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 * The client entry's userinfo pointer must be always valid. Otherwise the [] 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 [] 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 [] 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 [] 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * Minor typo fixes on command reply handling on server. Tue Nov 28 11:05:39 EET 2000 Pekka Riikonen * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * 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 * Changed client librarys channel->clients table to SilcList and changed code accordingly. Thu Nov 2 16:28:01 EET 2000 Pekka Riikonen * 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 * 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 * 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 * 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 * 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 * 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 * Added support for multiple nicknames on same channel. [n] is added locally to the nickname if there are more than one same nicknames on the channel. * Server now sends all nicknames that matched WHOIS request. Client also shows the list received from server. * Added TOPIC command to client side. User can now set and show current topic on channel. * Added MOTD command to client and server. Also, server sends the motd when client connects to the server. * Changed version strings to comply ISO 8601. Wed Oct 4 23:29:06 EEST 2000 Pekka Riikonen * Fixed protocol error handling in client library. It should now cope even if the SKE fails for some reason. * Made new protocol specification drafts for submitting to IETF. * Implemented TOPIC command to server in silcd/command.c. * Added two new notify types into lib/silccore/silcnotify.h: SILC_NOTIFY_TYPE_NICK_CHANGE and SILC_NOTIFY_TYPE_TOPIC_SET to notify nickname change and topic setting/change on a channel. * API change of command_reply operation in client library. The application gets now the status type received from server as well. Sat Sep 30 16:57:42 EEST 2000 Pekka Riikonen * Removed the function just added to lib/silcutil/silcschedule.[ch]. * Cras fixed and optimized the packet handling even further and it should work now. Minor change to the prototype of function silc_packet_receive_process in lib/silccore/silcpacket.[ch]. Sat Sep 30 08:48:47 EEST 2000 Pekka Riikonen * Added new function into lib/silcutil/silcschedule.[ch]: silc_schedule_with_fd to select() a specified fd. The function returns after timeout expires or data arrives or goes. The function is used by packet routines to wait that all data is received from network. * Fixed data reading from network in lib/silccore/silcpacket.c. The code now assures that all data is read from the fd and then continues packet processing. This was a bug fix since the code used to drop some data in some circumstances. * Added new function into lib/silcclient/client.[ch]: silc_client_start_key_exchange to start key exchange after connection has been established to server. The code internally now uses this funtion but its main purpose was to provide it for applications that perform their own connecting. After application has created a connection it merely calls this function to start the key exchange between client and server. The library takes care of everything else after that. Updated also lib/silcclient/README to explain the usage of this new function. * Do not send to application information that connection has been established. Application gets notified it by connect operation anyway. Thu Sep 28 23:40:19 EEST 2000 Pekka Riikonen * Applied cras's patch to add silc_schedule_one function. The function runs scheduler once and returns. * Fixed the scheduler after cras messed it up. The timeout handling works now as it's supposed to work. * Added into lib/silccore/ silcnotify.h to include notify message types support. Changed silc_server_send_notify* functions, in server.[ch], to support those new notify types. Added the support for the notify types into client library, as well. Added new notify client operation into ops.h in lib/silcclient/. * Changed silc_server_packet_send_to_channel to send normal packets instead of just channel message packets. The function is now used to send the notify packets to channels. It is not used to send channel message packets anymore, as server never sends them anymore. * Added explicit casting into lib/silcutil/silcbuffmt.c to few va_arg()s as it seems to require it nowadays. I guess, if SILC is compiled with older va_arg() the new code should work anyway. Wed Sep 13 18:10:14 EEST 2000 Pekka Riikonen * Splitted core library. Core library (lib/silccore) includes now only SILC protocol specific core (and common) components. Created new utility library (lib/silcutil) that includes more generic purpose stuff. The stuff for util library was taken from the old core library. This was minor and easy split. * Created SILC Client Library (lib/silcclient) that includes implementation of the SILC client without user interface. This was major move from silc/ directory. The code has been changed so that it is transparent towards the user interface. The silc/ directory includes now the same user interface as before and it uses the new client library. Read lib/silcclient/README. Basicly, the client library performs everything else related to SILC except user interface handling. Also, configuration files are considered to be part of user interface and library does not handle them. This change also changed a lot of structures, function naming etc. Most important change was that SilcClientWindow object was renamed to SilcClientConnection in the client library. Created also new file lib/silcclient/ops.h. Also added new files silc/local_command.[ch] and silc/client_ops.[ch]. All these changes were made to make it easier for user interface designers to create what ever user interface for the SILC client they want. It is also expected that the server will be moved to lib directory as well and SILC Server Library will be created; sometimes in the future. * Removed Local commands from lib/silccore/silccommand.h as they are application specific and new client library does not handle any of those anymore. * Several functions moved to lib/silcutil/silcutilc.[ch] from old client implementation in silc/. * Added support for callback functions in SILC_LOG_* macros. Application can now set its own callbacks that will be called instead of using the default functions that will always print the debug messages to stderr (or stdout). Also, debugging can now be disabled by setting silc_debug to FALSE and re-enabled by setting it to TRUE. Note, that logging will still work even if debugging is disabled. New functions in lib/silcutil/silclog.[ch]: silc_log_set_callbacks, silc_log_reset_callbacks, silc_log_set_debug_callbacks and silc_log_reset_debug_callbacks. * To enable debugging in silc client one must give now -d option on command line. * Changed silc_schedule_init to automatically allocate task queues if they are not allocated before calling it. Thu Sep 7 10:49:33 EEST 2000 Pekka Riikonen * Added GMP 3.1 into math library. Sun Aug 20 21:27:26 EEST 2000 Pekka Riikonen * Added SILC_PACKET_REMOVE_CHANNEL_USER to remove a client from a channel in SILC network. The packet is used by servers and routers to notify other routers that user has left a channel. This little feature was missing until now. Added the feature to protocol specification as well. Added functions: silc_server_send_remove_channel_user and silc_server_remove_channel_user into server.[ch]. * Added SILC_PACKET_REKEY and SILC_PACKET_REKEY_DONE into lib/silccore/silcpacket.h. However, they are not implemented yet. Sat Aug 19 23:04:16 EEST 2000 Pekka Riikonen * Fixed joining to a channel and sending channel messages between server and router. The channel message sending should now work inside a cell. Tue Jul 25 20:46:13 EEST 2000 Pekka Riikonen * Fixed the private message sending between server and router. The private message sending should now work inside a cell. * Added silc_server_replace_id into server.[ch] to replace existing ID in the SILC network. * Added silc_idlist_find_server_by, silc_idlist_replace_client_id and silc_idlist_replace_server_id into idlist.[ch] in server. Mon Jul 24 18:33:31 EEST 2000 Pekka Riikonen * Fixed the server to server connections. Server can again now connect to router. Router to router connections probably does not work just yet. Thu Jul 20 13:15:01 EEST 2000 Pekka Riikonen * Added dynamic protocol registering support. Now protocols can registered and unregistered on the fly. Patch by cras. Wed Jul 19 19:08:46 EEST 2000 Pekka Riikonen * Added lib/contrib directory to hold routines that some platforms don't have but are needed by SILC. * Added getopt.c, getopt1.c and getopt.h from GNU C library into lin/contrib to provide getopt() and getopt_long() for those who don't have it. Tue Jul 18 20:41:20 EEST 2000 Pekka Riikonen * Added AWAY command to client. When away message is set and client receives a private message packet the client automatically replies to the sender with the away message. * Fixed a bug in lib/silcmath/mpbin.c: silc_mp_mp2bin. This bug seemed to be the cause of recent problems when compiling with gcc-2.95. * Added version detection support to SKE protocol specification and added the new changes to the SKE implementation as well. There were other minor changes in the SKE protocol as well. Many changes in lib/silcske/silcske.[ch] and in lib/silcske/payload.[ch]. * Added ^U functionality, clear input line. Patch from cras. Mon Jul 17 23:33:26 EEST 2000 Pekka Riikonen * Mainly small bugfixes on core library. Fixed some debugging logging and buffer overflow in silclog.c. * Updated config.sub and config.guess on the distribution tree. Sat Jul 15 15:33:48 EEST 2000 Pekka Riikonen * Added command lagging support in server. Client may execute commands now only once in two seconds. Thu Jul 13 22:10:21 EEST 2000 Pekka Riikonen * Optimized packet reception. MAC computation and checking is now also more optimized. A lot previously duplicated code is now used as generic by both client and server. * Fixed key pair generation in clientutil.c Wed Jul 12 18:28:07 EEST 2000 Pekka Riikonen * Added into lib/silccore/silcbufutil.[ch] new function; silc_buffer_realloc. * Moved generic packet sending/encryption functions to lib/silccore/silcpacket.[ch] from client and server. Some rewriting of the functions. * Moved all generic packet reception/decryption functions to lib/silccore/silcpacket.[ch] from client and server. The packet processing is now much cleaner in both client and server. These were major changes in both client and server. * Created many common functions in server to do packet sending. Previously code were duplicated a lot, this has been removed with these changes. Tue Jul 11 20:27:26 EEST 2000 Pekka Riikonen * Rewrote major parts of the ID cache system. Don't know whether it is better now or not but at least the API is more cleaner now. * Major rewrite on ID cache stuff on client because of the ID cache API changes. Added idlist.c to client. * Also major rewrite on ID cache stuff on server as well. Major rewrite of idlist.[ch]. SilcXXXList's are now named SilcXXXEntry's. We won't keep anymore idlist specific pointers in hand, instead they are all put into the ID cache system now. All server_idlist_* routines uses ID cache now instead of traversing its own lists (those lists does not exist anymore). SilcIDList though still exists. Also, SilcXXXEntry's are now pointers. Sun Jul 9 15:19:24 EEST 2000 Pekka Riikonen * Finally made the SKE implementation compliant to the protocol specification. All mp integers are now binary encoded as opposed being HEX encoded. * Added lib/silcmath/mpbin.[ch]. Encoding mp intergers to and from binary data. * Added into lib/silccore/silcutil.[ch] PEM encoding/decoding functions: silc_[encode/decode]_pem. Also added function silc_encode_pem_file to PEM encode with newlines ('\n') for saving into a file. * SILC public keys are now encoded either PEM or binary. Same option is for private keys as well. By default private keys are binary encoded and public keys PEM encoded. Silly HEX encoding were removed. * Added into lib/silccrypt/silchash.[ch] silc_hash_fingerprint function to create fingerprints. * Fixed a bug in SHA1; does not change the original data anymore. * Partly implemented INFO command on client and server side. Fixed CLEAR command. Changes to SERVER command; show current server(s) when giving command without arguments. Added VERSION command to client. * Added check to server that unregistered connections cannot execute commands (unless it is specificly allowed). Thu Jul 6 18:12:24 EEST 2000 Pekka Riikonen * Fixed screen refresh. * Fixed channel joining bug from client. On some circumstances client tried to join to a channel it had already joined. * Added public key verification process into client's protocol.c. The client now verifies the public key from user and saves it into ~./silc/serverkeys/ directory. Added into: clientutil.[ch]: silc_client_verify_server_key. * Changed SKE protocol's silc_ske_initiator_finish function to accept callback function that verifies the received public key. Removed old silc_ske_verify_public_key function. Wed Jul 5 19:19:02 EEST 2000 Pekka Riikonen * Added into silcpkcs[ch]: silc_pkcs_public_key[_data]_set and silc_pkcs_private_key[_data]_set. * Made the password and public authentication more cleaner in server's protocol.c. * Removed historic and obsolete protocol `channel_auth' from both client and server. * Removed wrong way of sending command status messages from server to client in server's command.c. The old way violated protocol specification. Changes to silccore/silccommand.[ch]: removed silc_command_encode_status_payload -> not needed anymore, changed silc_command_encode_payload_va to accept extra argument on variable argument list. The argument type must now be provided to the function. Also, added new function: silc_command_encode_reply_payload_va which is same as normal command_encode_payload_va except command status type is provided as extra argument. Tue Jul 4 18:26:39 EEST 2000 Pekka Riikonen * Added ~./silc directory handling. The directory includes the public and private keys for the client. Added silc_client_check_silc_dir, silc_client_create_identifier and silc_client_load_keys. * Implemented SILC protocol compliant public key. Added public and private key saving to and loading from files. Added into silcpkcs.[ch]: silc_pkcs_encode_identifier, silc_pkcs_public_key_encode[_data], silc_pkcs_public_key_decode, silc_pkcs_private_key_encode[_data], silc_pkcs_private_key_decode, silc_pkcs_public_key_alloc, silc_pkcs_public_key_free, silc_pkcs_private_key_alloc and silc_pkcs_private_key_free. Implemented: silc_pkcs_save_[public/private]_key[_data] and silc_pkcs_load_[public/private]_key. Mon Jul 3 18:51:27 EEST 2000 Pekka Riikonen * Added silc_server_get_route (route.[ch]) to get connection data for the fastest route for given ID. * Implemented INVITE command on client and server. The command were re-defined in the SILC Protocol Specification and the implementation now complies with the specification. * Implemented PING command on client and server. * Implemented NAMES command on client and server. The server side supports currently only normal server not router server yet. Some changes to NAMES definition in SILC protocol specification. Sun Jul 2 18:23:01 EEST 2000 Pekka Riikonen * Implemented LEAVE command on client and server. * Previously deprecated SILC_PACKET_FORWARDED flag is now in use again. This change was made to the protocol as well. Server should not violate the protocol specification anymore. Fri Jun 30 14:03:26 EEST 2000 Pekka Riikonen * Added SOCKS4 and SOCKS5 support to SILC client. SOCKS5 was tested. SOCKS4 was not but should work anyway.