TODO for 1.1 And Beyond ======================= lib/silccrypt ****PARTLY DONE**** ============= o Implement the defined SilcDH API. The definition is in lib/silccrypt/silcdh.h. o SSH2 public keys support, allowing the use of SSH2 public keys in SILC. o OpenPGP certificate support, allowing the use of PGP public keys in SILC. o SILC PKCS (silcpkcs.h) reorganizing when other PK supports added. Move the SILC Public Key routines away from the crypto library into the core library (silccore). silc_pkcs_public/private_key_* routines to silc_public/private_key_* routines. The silc_public_key_* routines should also automatically handle SILC Public Keys, and other keys and certificates as well. Add fe. silcpk.h into silccore. It should also include the Public Key Payload encoding and decoding routines. o Add DSS support. o Cipher optimizations (asm, that this) at least for i386 would be nice. o ECDSA and ECDH. lib/silccore/silcpacket.[ch] ****DONE**** ============================ o SilcPacketEngine. o New SILC Packet API. lib/silccore/silcpacket.[ch] ============================ o IV Included flag support, UDP transport support lib/silccore/silcid.[ch] ****DONE**** ======================== o Add silc_id_str2id to accept the destination buffer as argument and thus not require any memory allocation. Same will happen with silc_id_payload_* functions. o silc_id_str2id, silc_id2str to non-allocating routines. lib/silccore ============ o All payload encoding routines should take SilcStack as argument. lib/silcutil ****PARTLY DONE**** ============ o Compression routines are missing. The protocol supports packet compression thus it must be implemented. SILC Zip API must be defined. o Add builtin SOCKS and HTTP Proxy support, well the SOCKS at least. SILC currently supports SOCKS4 and SOCKS5 but it needs to be compiled in separately. o bool -> SilcBool o SilcBit, bit field: #define SilcBit(b) unsigned int b : 1 lib/silcutil/silcbuffer.h ****DONE**** ========================= o Remove the `truelen' field from SilcBuffer as it is entirely redundant since we can get the true length of the buffer by doing buffer->end - buffer->header. Add silc_buffer_truelen macro instead. Consider also removing `len' field too since it effectively is buffer->tail - buffer->data, and adding silc_buffer_len macro can do the same. These would save totally 8 bytes of memory per buffer. lib/silcutil/silcbuffmt.[ch] ****PARTY DONE**** ============================ o SILC_STR_APPEND, _APPEND_TAIL. o SILC_STR_OFFSET lib/silcutil/silcstack.[ch] ****DONE**** =========================== o Data stack implementation lib/silcutil/silcstream.[ch] ****DONE**** ============================ o Add abstract SilcStream. lib/silcutil/silcsocketstream.[ch] ****PARTY DONE**** ================================== o Add SilcSocketStream. o Test QoS lib/silcutil/epoc/* =================== o lib/silcutil/epoc routines missing or not completed. o The PKCS#1 also calls global RNG (even though it is not used currently in SILC, the interface allows its use). o Something needs to be thought to the logging globals as well, like silc_debug etc. They won't work on EPOC. Perhaps logging and debugging is to be disabled on EPOC. lib/silcutil/silcschedule*.[ch] ****DONE**** =============================== o Scheduler can be optimized for FD tasks by changing the fd_queue to SilcHashTable instead of using linked list. We need to do one-to-one mapping of FD to task and hash table is more efficient for this usage. Also redefine the silc_select to perhaps return a separate structure of the events that actually occurred, instead of returning the events in the fd_list which is then traversed in the generic code to find the changed events. This can be made faster by having own struct which includes only the changed events, thus the tarversing is faster since the whole fd_list is not traversed anymore (it is still traversed in the silc_select but at least it removes one extra tarversing later for the same list). Other task queues should be changed to use SilcList. o Add SILC scheduler's internal routines into a table of implementation function pointers, that the generic code then takes as extern from implementation. These are the silc_schedule_internal_* routines. o Change SILC_TASK_CALLBACK to non-static, and remove the macro SILC_TASK_CALLBACK_GLOBAL. lib/silcutil/silcasync.[ch] ****DONE**** =========================== o Add SilcAsyncOperation to utility library. Any function that takes callback as an argument must/should return SilcAsyncOperation. lib/silcutil/silctime.[ch] ****DONE**** =========================== o SilcTime. o system time, universal, generalized. lib/silcmath ============ o Import TFM. Talk to Tom to add the missing functions. Use TFM in client and client library, but TMA in server, due to the significantly increased memory consumption with TFM, and the rare need for public key operations in server. o The SILC MP API function must start returning indication of success and failure of the operation. o Do SilcStack support for silc_mp_init, silc_mp_init_size and other any other MP function (including utility ones) that may allocate memory. o All utility functions should be made non-allocating ones. lib/silcasn1 ****PARTLY DONE**** ============ o ASN.1 library o Header documentation missing. o Some string encodings missing (copy/paste matter). lib/silcpkix ============ o PKIX implementation lib/silcutil/silcfsm.[ch] ****DONE**** ========================= o SILC Finite State Machine API. Replaces SILC Protocol API, lib/silcutil/silcnet*, lib/silcutil/*/silc*net* ****PARTLY DONE**** =============================================== o Add UDP interface o New network interfaces o Other functions should remain as they are since these new functions have to use them. This way we also provide them for applications that want to handle the sockets by themself. lib/silcserver ============== o The SERVER_SIGNOFF notify handing is not optimal, because it'll cause sending of multiple SIGNOFF notify's instead of the one SERVER_SIGNOFF notify that the server received. This should be optimized so that the only SERVER_SIGNOFF is sent and not SIGNOFF of notify at all (using SIGNOFF takes the idea about SERVER_SIGNOFF away entirely). o Another SERVER_SIGNOFF opt/bugfix: Currently the signoff is sent to a client if it is on same channel as the client that signoffed. However, the entire SERVER_SIGNOFF list is sent to the client, ie. it may receive clients that was not on the same channel. This is actually against the specs. It must be done per channel. It shouldn't receive the whole list just because one client happened to be on same channel. o MAYBE: The SilcChannelClientEntry can be: SilcUInt32 address; SilcUInt32 mode; where address is SilcClientEntry address XOR SilcChannelEntry. You can get SilcClientEntry by doing client = chl->address XOR channel, and SilcChannelEntry by doing channel = chl->address XOR client. As long as the other pointer is always available when accessing the structure this can be done. o Add reference counters to all Silc*Entry structures o SERVICEs support (plugin, SIM) o If client's public key is saved in the server (and doing public key authentication) then the hostname and the username information could be taken from the public key. Should be a configuration option! o Add a timeout to handling incoming JOIN commands. It should be enforced that JOIN command is executed only once in a second or two seconds. Now it is possible to accept n incoming JOIN commands and process them without any timeouts. THis must be employed because each JOIN command will create and distribute the new channel key to everybody on the channel (Fix this to 0.9.x). o Related to above. If multiple JOINs are received in sequence perhaps new key should be created only once, if the JOINs are handeled at the same time. Now we create multiple keys and never end up using them because many JOINs are processed at the same time in sequence. Only the last key ends up being used. o The CMODE cipher & hmac change problem (#101).