New features TODO
=================
+ o Optimization in general. I have not focused to program optimized code
+ in many circumstances. It has been more important to get this up and
+ working. A lot must be optimized especially the ID cache. Instead of
+ using lists some hash tables should be used. The searching by ID and
+ such must be made a lot faster. If someone would like dedicate their
+ efforts purely to generate optimized code I'd be appreaciated.
+
+ o We should replace all short, int, long, unsigned short, unsigned int,
+ unsigned long with some pre-defined datatypes that really are what
+ we want on all platforms. int16, uint16, int32, uint32 etc. are
+ what we could use or maybe SilcInt16, SilcUInt16 etc. Also, boolean
+ datatype should be defined.
+
+ o Add boolean (or bool), typedef of unsigned char.
+
+ o More platform supports should be added. The code is pretty much
+ generic but there are some parts that require porting (SIM). Also,
+ some support for different platforms is needed into configure.in.
+
+ o SILC requires currently GCC to work because we use GCC specific
+ compilation options. Generally any compiler that supports inline
+ functions and can build shared libraries (for SIMs) should work.
+ These cases should be included into configure.in.
+
o Extended SIM (SILC Module) support. Currently only SILC Cipher API
and SILC Hash API may be used as SIM's. What I have in mind is to
have extended support for SIM's so that basically any SILC API could
example code (code that we could use directly pretty easily) for
other platforms.
- o We should replace all short, int, long, unsigned short, unsigned int,
- unsigned long with some pre-defined datatypes that really are what
- we want on all platforms. int16, uint16, int32, uint32 etc. are
- what we could use or maybe SilcInt16, SilcUInt16 etc. Also, boolean
- datatype should be defined.
-
- o More platform supports should be added. The code is pretty much
- generic but there are some parts that require porting (SIM). Also,
- some support for different platforms is needed into configure.in.
+TODO In SILC Client Library
+===========================
- o SILC requires currently GCC to work because we use GCC specific
- compilation options. Generally any compiler that supports inline
- functions and can build shared libraries (for SIMs) should work.
- These cases should be included into configure.in.
-
-
-TODO In SILC Client
-===================
-
- o Implement all commands. A lot of commands are still yet to be
- implemented. Most of them are trivial but some will require some
- planning. Go see the command.c for unimplemented commands.
+ o Add client library parameters or options that handle what kind of
+ messages the library should print out (using `say' client operation,
+ for example) and what is left for the application to print. The
+ appliation could for example set that it handles all command printing
+ but all error printing should be handled by the library, etc...
o Non-blocking connection on the background must be stopped if some
other connection on same window has established. Now it is possible
we already have a working connection to some other place; things
goes bad.
- o Finish WHOIS, finish JOIN and other commands that are partly
- implemented.
-
o Input line on UI is buggy. Cursor movement etc bugs. Too lazy to
fix it.
message sending. I guess the logic is done in server side but is
missing from client.
- o Private message key setting is missing and must be implemented.
- Currently private messages are encrypted with session keys. This
- is required by the protocol.
-
- o Channel private key setting is missing and must be implemented.
- Currently there cannot be private keys for channels. Normal channel
- keys (generated by server) are used. This is required by the protocol.
-
o I guess, public key authentication (when connecting to a server)
is not working currently. It is just matter of loading the keys
from file and using them (see corresponding code in server, it should
support public key authentication already).
- o Multiple windows support. Basic support for multiple windows already
- exists but a lot is still missing to get it working. Also, some
- of the existing stuff probably needs to be tweaked a bit before the
- multiple windows support could be done. And of course the actual
- commands that control the windows needs to be written (/WINDDOW).
-
- o Implement /KEYMAP (or similiar) command to remap control and function
- keys.
-
- o Implement /ALIAS command to make command aliases.
-
- o Implement /set/if/do/while etc as in IRC2. Maybe post 1.0 task.
- Some scripting would be good.
-
o Connection Authentication request resolving is missing and must be
done. This is required by the protocol.
- o Key Exchange protocol's responder side is missing from client.
- Generally it is possible for the client to be responder so it should
- be implemented (See corresponding code from server). Error handling
- in the KE protocol is also in pretty bad shape in client.
-
- o Configuration file format - could be better.
-
- o Write help files for commands. Nice format for the help files should
- be selected. I'm open for ideas.
-
- o All allocations and freeing needs to be checked for memory leaks.
-
TODO In SILC Server
===================
- o Implement all commands on server side. A lot of commands are still yet
- to be implemented. Most of them are trivial but some will require some
- planning. Go see the command.c for unimplemented commands.
+ o Packet processing can be made faster. All packet function in the
+ packet_receive.c has same prototypes. Instead of calling those from
+ huge switch() make a table of callback functions that can be called
+ directly by the packet type.
+
+ o silc_server_send_key_agreement and silc_server_send_private_message_key
+ are one and same function (also silc_server_send_private_message is
+ almost same function). These should be unified to one generic named
+ function and use that.
o DNS/IP lookup blocks the server. This must be fixed. Check the
resolver stuff (resolver(3), resolver(5)). Either we have to do the
o Client history must be implemented. Protocol says that server must
keep history information about clients for some period of time.
- o Channel flags and user modes on channels are not implemented yet as
- /MODE command is not implemented yet in client and server.
-
o Protocol execution timeouts are hard coded, should be configurable.
- o serverutil.c I guess should be created for util-like functions that
- now resides in server.c, which is getting too big.
-
- o serverconfig.c and the function naming in it is inconsistent. It is
- not silc_config_server* it should be silc_server_config*. As should
- all the SilcConfigServer* types be SilcServerConfig*.
-
- o Implement DENY_CONNECTION section in serverconfig.c and in server.
-
- o Implement REDIRECT_CLIENT section in serverconfig.c and in server.
-
- o Configuration file format - could be better.
-
o IP address fields in configuration file should accept mask format
as well, IP/MASK, and not just plain IP.
checked at the authentication phase after KE, that is ok, but it should
be checked before starting KE, as well.
- o Statistics are totally missing from the server. It would be nice
- to gather some statistics.
-
- o All allocations and freeing needs to be checked for memory leaks.
-
TODO In SILC Libraries
======================
+ o Rewrite the task system. I made it too complex and too "neat" and
+ it really should be rewritten. We don't need priorities really, one
+ priority is enough. This will simplify a lot the task system.
+
o Implement PFS (Perfect Forward Secrecy) flag in SKE (and in client and
server, actually). If PFS is set, re-key must cause new key exchange.
This is required by the SILC protocol.
o Re-key in general is actually missing (from everywhere) and must be done.
- o SKE does not send correct status types. Types are defined but not
- sent.
-
- o Connection authentication protocol does not send correct status types.
- These types are not defined currently at all.
-
- o PKCS#1 style RSA public key encryption/decryption/sign/verify is
- missing, and should be added for interoperability reasons. The thing
- I've done now is bad and should be removed as soon as possible (or
- the protocol should then state the method of how they should be done).
-
- o Slow ciphers should be removed. I think we don't need more than
- the AES finalists plus blowfish and RC5.
-
- o These slow ciphers actually don't work currently as I've tested
- only the ones that are worth testing. The CBC mode on these slow
- ciphers probably don't work. No need to worry, these ciphers should
- be removed.
-
- o Scheduler needs to be analyzed on high load as it might be unfair
- towards select() because it may run timeout tasks before select() and
- after select(). If it is found to be unfair the timeout task running
- before select() should probably be removed.
-
- o On select() issue; maybe we should use poll() instead if it is
- available? poll() doesn't have max fd limit...
-
- o SIM support for SILC PKCS API needs to made so that they could be
- used as SIM's. At the same time some work is required on prime
- generation as the way it is done now sucks. Read from code for
- more (silcpkcs.h).
+ o ID Cache expiry does not work.
o Compression routines are missing. The protocol supports packet
compression thus it must be implemented. SILC Comp API must be
not in distribution), but it is not used yet, and it requires some
tweaking on the Makefiles (we want static lib not shared).
- o Cipher API needs to be made more consistent. Some parts of the
- code generated with current Cipher API looks really bad. Same
- is with PKCS API, even worse actually. They need to be made
- cleaner. Introducing silc_cipher_encrypt/decrypt/set_key etc.
- functions (I actually don't understand why have I left these un-done).
-
- o Scheduler should automatically allocate task queues if NULL pointers
- are passed to the silc_schedule_init. Would make initialization
- cleaner.
-
- o Packet processing routines in client and server are actually pretty
- much generic and should be moved from the client/server to the library
- as generic routines (silc_<client/server>_packet_decrypt_rest* etc).
- This requires heavy changes to the client and server.
+ o SIM support for SILC PKCS API needs to made so that they could be
+ used as SIM's. At the same time some work is required on prime
+ generation as the way it is done now sucks. Read from code for
+ more (silcpkcs.h).
o Random Number Generator needs some tweaking. Reading /dev/random may
block resulting slow initialization of RNG. Some other things in the
that needs to be commited (from Schneier's Yarrow-160 paper). They
should make the RNG even better.
- o Logging should be made more generic in a way that application can
- set to where the logging is destined to. Now, it is always destined
- to stdout (or stderr) which is a bad thing for client. Ie. some
- sort of logging registration functions or similiar should be done
- (silclog.[ch] in core). The actual output of logs should be done
- by callback function in the application not in lib.
-
- o All allocations and freeing needs to be checked for memory leaks.
-
- o silc_buffer_[un]format() needs to be made more stable as it may
- crash the SILC if malformed data is sent as argument. There are a
- lot of places in client and server where we trust directly data coming
- from network and try to unformat it. The unformatting routine needs
- to be able handle situations where data sent is malformed, by mistake
- or intentionally. This is important as it is easy to crash the SILC
- now by just sending malformed data. Also, in client and server we
- must start checking the return value from silc_buffer_[un]format.
+ o Scheduler needs to be analyzed on high load as it might be unfair
+ towards select() because it may run timeout tasks before select() and
+ after select(). If it is found to be unfair the timeout task running
+ before select() should probably be removed.
Other Things TODO
nice as SSH is widely used all over the place. SILC Protocol
supports SSH2 public keys.
- o IRC support for SILC client. This would be nice to have on client
- as it could be used to connect to SILC and IRC. People wouldn't
- have to have two different clients when same would work on both.
- I'd like to see this done as SIM, after the extended SIM support
- has been added to SILC.
-
o Cipher optimizations (asm, that this) at least for i386 would be nice.
projects / silc.git / blobdiff