to silc-devel mailing list or appear on 'silc' channel on SILCNet.
-General
-=======
-
- o Create apps/tutorial containing various Toolkit API tutorials.
-
- o The Toolkit split. The Toolkit is to be splitted in parts. How many
- parts and what the parts are isn't decided yet. Each part is a separate
- software package. Current thinking is of the following:
-
- SILC Toolkit SILC protocol, client and server library
- SILC Runtime Toolkit runtime library
- SILC Crypto Toolkit crypto, asn1, math, skr, pgp, etc.
-
- The rationale for this is of course that other than SILC projects
- might like to use the various libraries SILC Toolkit provides, but
- naturally they don't want the bloat of SILC protocol related stuff.
-
- The Runtime library in SILC Toolkit is a general purpose runtime library,
- like Glib and APR are. The runtime library is to be developed further
- to provide alternative to Glib and APR.
-
- The Crypto library in SILC Toolkit is a general purpose crypto library
- providing pretty nice APIs compared to many other crypto libraries,
- especially OpenSSL. The Crypto library is to be developed further
- to include support for OpenPGP, X.509 and SSH2.
-
-
lib/silccore
============
never joined the channel if this happens. What to do if message is
received from user that hasn't been resolved/joined?
+ o Add the SilcStream (socket stream) from the SilcPacketStream and
+ SilcSocket from the socket stream to SilcClientConnection for easier
+ access to them for programmers. Currently these have to be digged up
+ from the packet stream.
+
+ o Connection option that attemps to connect to remot host with various
+ different mechanisms: UDP 706, TCP 706, TCP 80, TCP 443, UDP 7706 and
+ TCP 7706. This is the so called hole punching mechanism.
+
o Message ACKing support.
o in /cmode and /cumode with +r, maybe the public key and private key
should provide events so that application developer has a choice of
developing the SILC app with callbacks or with events.
-
-Runtime library, lib/silcutil/
-==============================
-
- o Fix universal time decoding (doesn't accept all formats) in silctime.c.
-
- o Add functions to manipulate environment variables. (***DONE)
-
- o Add functions to loading shared/dynamic object symbols (replaces the
- SIM library (lib/silcsim) and introduces generic library). Add this
- to lib/silcutil/silcdll.[ch]. (***TESTING NEEDED WIN32, TODO Symbian)
-
- o Add directory opening/traversing functions
-
- o silc_getopt routines
-
- o The SILC Event signals. Asynchronous events that can be created,
- connected to and signalled. Either own event routines or glued into
- SilcSchedule:
-
- SilcTask silc_schedule_task_add_event(SilcSchedule schedule,
- const char *event, ...);
- SilcBool silc_schedule_event_connect(SilcSchedule schedule,
- const char *event,
- SilcTaskCallback event_callback,
- void *context);
- SilcBool silc_schedule_event_signal(SilcSchedule schedule,
- const char *event, ...);
-
- Example:
- silc_schedule_task_add_event(schedule, "connected",
- SILC_PARAM_UI32_INT,
- SILC_PARAM_BUFFER,
- SILC_PARAM_END);
- silc_schedule_event_connect(schedule, "connected", connected_cb, ctx);
- silc_schedule_event_signal(schedule, "connected", integer, buf,
- SILC_PARAM_END);
- SILC_TASK_CALLBACK(connected_cb)
- {
- FooCtx ctx = context;
- va_list args;
- SilcUInt32 integer;
- SilcBuffer buf;
-
- va_start(args, context);
- integer = va_arg(args, SilcUInt32);
- buf = va_arg(args, SilcBuffer);
- va_end(args);
- ...
- }
-
- Problems: Events would be SilcSchedule specific, and would not work on
- multi-thread/multi-scheduler system. The events should be copyable
- between schedulers. Another problem is the signal delivery. Do we
- deliver them synchronously possibly from any thread to any other thread
- or do we deliver them through the target schedulers. If we use the
- schedulers then signalling would be asynchronous (data must be
- duplicated and later freed) which is not very nice.
-
- o If the event signals are added, the SILC_PARAM_* stuff needs to be
- moved from silcbuffmt.h to silctypes.h or something similar.
-
- o In case the SILC Events are done we shall create a new concept of
- parent and child SilcSchedule's. When new SilcSchedule is created a
- parent can be associated to it. This association could be done either
- directly by the parent or by any other children. This way the signals
- would in effect be global and would reach all children schedulers.
-
- This relationship would be associative only. The schedulers are still
- independent and run independently from each other. All schedulers
- would be linked and could be accessed from any of the schedulers.
- It should be possible to retrieve the parent and enumate all children
- from any of the schedulers.
-
- SilcSchedule silc_schedule_init(int max_tasks, void *app_context,
- SilcSchedule parent);
- SilcSchedule silc_schedule_get_parent(SilcSchedule schedule);
-
- o Additional scheduler changes: optimize silc_schedule_wakeup. Wakeup
- only if the scheduler is actually waiting something. If it is
- delivering tasks wakeup is not needed.
-
- o Structured log messages to Log API. Allows machine readable log
- messages. Would allow sending of any kind of data in a log message.
-
- o Base64 to an own API (***DONE)
-
- o Timer API (***DONE)
-
- 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 silc_stringprep to non-allocating version.
-
- o silc_hash_table_replace -> silc_hash_table_set. Retain support for
- silc_hash_table_replace as macro. (***DONE)
-
- o SilcStack aware SilcHashTable. (***DONE)
-
- o SilcStack aware SilcDList. (***DONE)
-
- o Thread pool API. Add this to lib/silcutil/silcthread.[ch]. (***DONE)
-
- o Fast mutex implementation. Fast rwlock implementation. Mutex and
- rwlock implementation using atomic operations.
-
- o Compression routines are missing. The protocol supports packet
- compression thus it must be implemented. SILC Zip API must be
- defined.
-
- o Add new functions to SilcStack API in lib/silcutil/silcstack.[ch]. Add
- silc_stack_[set|get]_alignment. It defines the default alignment used
- when allocating memory from stack. It can be used to specify special
- alignments too when needed (such as for hardware devices like crypto
- accelerators). Move also the low level silc_stack_malloc and
- silc_stack_realloc from silcstack_i.h to silcstack.h. Remove the
- _ua unaligned memory allocation routines. Remove unaligned memory
- allocation possibility. (***DONE)
-
- o Add '%@' format to silc_snprintf functions. It marks for external
- rendering function of following type:
-
- /* Snprintf rendering function. The `data' is rendered into a string
- and allocated string is returned. If NULL is returned the
- rendering is skipped and ignored. If the returned string does
- not fit to the destination buffer it may be truncated. */
- typedef char *(*SilcSnprintfRender)(void *data);
-
- It can work like following:
-
- char *id_renderer(void *data)
- {
- char tmp[32];
- id_to_str(tmp, sizeof(tmp), (SilcID *)data);
- return strdup(tmp);
- }
-
- silc_snprintf(buf, sizeof(buf), "Client ID %@", id_renderer, client_id);
-
- (o Generic SilcStatus or SilcResult that includes all possible status and
- error conditions, including those of SILC protocol. Though, the SILC
- protocol related status (currently in silcstatus.h) cannot be in
- runtime library) maybe
-
- (o SILC specific socket creation/closing routines to silcnet.h, wrappers
- to all send(), recv(), sendto() etc. Bad thing is that we'd have to
- define all socket options, sockaddrs, etc.) maybe
-
- (o mmap) maybe
-
-
-lib/silcutil/symbian/
-=====================
-
- 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. The logging currently works
- by it cannot be controlled, same with debugging.
+ o Ability to recover from rekey errors, at least try to.
SFTP Library, lib/silcsftp/
be done easily.
-SKR Library, lib/silcskr/
-=========================
-
- o Add fingerprint as search constraint.
-
- o Add OpenPGP support. Adding, removing, fetching PGP keys. (Keyring
- support?)
-
- o Add support for importing public keys from a directory and/or from a
- file. Add support for exporting the repository (different formats for
- different key types?).
-
- o Change the entire silc_skr_find API. Remove SilcSKRFind and just simply
- add the find constraints as variable argument list to silc_skr_find, eg:
-
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_COUNTRY, "FI",
- SILC_SKR_FIND_USAGE, SILC_SKR_USAGE_AUTH,
- SILC_SKR_FIND_END);
-
- NULL argument would be ignored and skipped.
-
- o Add OR logical rule in addition of the current default AND, eg:
-
- // Found key(s) MUST have this public key AND this country.
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_RULE_AND,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_COUNTRY, "FI",
- SILC_SKR_FIND_END);
-
- // Found key(s) MUST have this public key OR this key context
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_RULE_OR,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_CONTEXT, key_context,
- SILC_SKR_FIND_END);
-
- o SilcStack to SKR API.
-
-
-Crypto Library, lib/silccrypt/
-==============================
-
- o Add silc_crypto_init and silc_crypto_uninit. The _init should take
- SilcStack that will act as global memory pool for all of crypto
- library. It should not be necessary anymore to separately register
- default ciphers, HMACs, etc, the _init would do that. However, if
- user after _init calls silc_pkcs_register, for example, it would take
- preference over the default once, ie. user can always dictate the
- order of algorithms. (***DONE)
-
- o Add fingerprint to SilcSILCPublicKey and retrieval to silcpk.h, and
- possibly to silcpkcs.h.
-
- /* Return fingerprint of the `public_key'. Returns also the algorithm
- that has been used to make the fingerprint. */
- const unsigned char *
- silc_pkcs_get_fingerprint(SilcPublicKey public_key,
- const char **hash_algorithm,
- SilcUInt32 *fingerprint_len);
-
- o Change SILC PKCS API to asynchronous, so that accelerators can be used.
- All PKCS routines should now take callbacks as argument and they should
- be delivered to SilcPKCSObject and SilcPKCSAlgorithm too. (***DONE)
-
- o Change PKCS Algorithm API to take SilcPKCSAlgorithm as argument to
- encrypt, decrypt, sign and verify functions. We may need to for exmaple
- check the alg->hash, supported hash functions. Maybe deliver it also
- to all other functions in SilcPKCSAlgorithm to be consistent. (***DONE)
-
- o Add DSA support to SILC public key.
-
- o Add DSS support. (***DONE)
-
- o Implement the defined SilcDH API. The definition is in
- lib/silccrypt/silcdh.h. Make sure it is asynchronous so that it can
- be accelerated. Also take into account that it could use elliptic
- curves.
-
- o ECDSA and ECDH
-
- o All cipher, hash, hmac etc. allocation routines should take their name
- in as const char * not const unsigned char *.
-
-
-SILC Accelerator Library
-========================
-
- o SILC Accelerator API. Provides generic way to use different kind of
- accelerators. Basically implements SILC PKCS API so that SilcPublicKey
- and SilcPrivateKey can be used but they call the accelerators.
- (***DONE)
-
- o Implement software accelerator. It is a thread pool system where the
- public key and private key operations are executed in threads.
- (***DONE)
-
- o Diffie-Hellman acceleration
-
- (o Symmetric key cryptosystem acceleration? They are always sycnhronouos
- even with hardware acceleration so the crypto API shouldn't require
- changes.) maybe
-
-
-lib/silcmath
-============
-
- o Import TFM. We want TFM's speed but its memory requirements are
- just too much. By default it uses large pre-allocated tables which
- will eat memory when there are thousands of public keys in system.
- We probably want to change TFM's fp_int dynamic so that a specific
- size can be allocated for the int. We could have two new functions:
-
- SilcBool silc_mp_init_size(SilcMPInt *mp, SilcUInt32 bit_size);
- SilcBool silc_mp_sinit_size(SilcStack stack, SilcMPInt *mp,
- SilcUInt32 bit_size);
-
- Which by default allocates `bit_size' bits instead of some default
- value. silc_mp_init would allocate the default FP_SIZE with TFM
- and do normal init with TMA and GMP. _init_size with TMA and GMP
- would be same as _init.
-
- o Add AND, OR and XOR support to TFM or ask Tom to do it.
-
- 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.
-
-
-SILC XML Library, lib/silcxml/
-==============================
-
- o SILC XML API (wrapper to expat). Look at the expat API and simplify
- it. The SILC XML API should have at most 8-10 API functions. It should
- be possible to create full XML parser with only one function. And, it
- should be possible to have a function that is able to parse an entire
- XML document. It should also have a parser function to be able to
- parse a stream of XML data (SilcStream). It MUST NOT have operations
- that require multiple function calls to be able to execute that one
- operation (like creating parser).
-
-
lib/silcske/silcske.[ch]
========================
o Ratelimit to UDP/IP transport for incoming packets.
-lib/silcasn1
-============
-
- o Negative integer encoding is missing, add it.
-
- o SILC_ASN1_CHOICE should perhaps return an index what choice in the
- choice list was found. Currently it is left for caller to figure out
- which choice was found. (***DONE)
-
- o SILC_ASN1_NULL in decoding should return SilcBool whether or not
- the NULL was present. It's important when it's SILC_ASN1_OPTIONAL
- and we need to know whether it was present or not. (***DONE)
-
-
-lib/silcpgp
-===========
-
- o OpenPGP certificate support, allowing the use of PGP public keys
- in SILC.
-
-
-lib/silcssh
-===========
-
- o SSH2 public key/private key support, allowing the use of SSH2 keys
- in SILC. RFC 4716. (***DONE)
-
-
-lib/silcpkix
-============
-
- o PKIX implementation
-
-
apps/silcd
==========
term UDP sessions.
o The server must be able to run behind NAT device. This means that
- Server ID must be based on public IP instead of private IP.
+ Server ID must be based on public IP instead of private IP (See
+ also NAT detection protocol in SILC protocol specification).
o The following data must be in per-connection context: client id cache,
server id cache, channel id cache, all statistics must be
o Do inccoming packet processing in an own FSM thread in the
server-threads FSM. Same as in client library.
+ o Binding to other ports than 706 too. To allow easier traversing
+ through NATs and firewalls server should also bind to 80, 443 and 7706
+ by default (at least try to bind). Connections must work normally
+ even if they were established to some other port other than 706.
+
+ Connection option that attemps to connect to remot server with various
+ different mechanisms: UDP 706, TCP 706, TCP 80, TCP 443, UDP 7706 and
+ TCP 7706. This is the so called hole punching mechanism.
+
+ o Ability to recover from rekey errors, at least try to.
+
o Reference count all Silc*Entry structures.
Some issues that must be kept in mind from 1.0 and 1.1 silcd's:
+ o The server and router software MUST work out of the box. After
+ installation the server must not require any configuration to run the
+ most basic working configuration. No defining IP addresses, etc.
+ The server must work just by running it.
+
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