- Pekka
-New features TODO
-=================
-
- 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
- be used as SIM's. This would open tremendous possiblities but
- opens also issues on security that needs to be dealt with.
-
- Some sort of SIM compilation environment should be defined so that
- the SIM's could use SILC specific symbols from the modules (which they
- cannot do currently). In the future modules could add new features
- to SILC easily with this support. I'm more thinking this from client's
- perspective to add new features to client (such as IRC support as SIM)
- but server should have the support as well. Anyhow, this is an
- interesting feature...
-
- This maybe post 1.0 task - dunno.
-
- o SIM support for other platforms than just for Linux. Apache has
- example code (code that we could use directly pretty easily) for
- other platforms.
+TODO General
+============
o We should replace all short, int, long, unsigned short, unsigned int,
unsigned long with some pre-defined datatypes that really are what
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.
-
- 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 Library
+===========================
-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 Non-blocking connection on the background must be stopped if some
- other connection on same window has established. Now it is possible
- that some non-blocking connection timeouts on the background when
- we already have a working connection to some other place; things
- goes bad.
+ o TODO in commands (silc/local_command.c, lib/silcclient/command.c and
+ silc/silclient/command_reply.c):
- o Finish WHOIS, finish JOIN and other commands that are partly
- implemented.
+ o Local command to handle private message keys is not done
+ o Local command to handle channel private keys is not done
+ o Local command to handle key agreement protocol is not done
+ o RESTART command is not implemented
- o Input line on UI is buggy. Cursor movement etc bugs. Too lazy to
- fix it.
+ o Client library crashes if for example server timeouts protocol
+ execution and disconnects the client. The client, on the other hand
+ may still assume that the connection is active, even after receiving
+ the EOF. Reason for this is that the clien library does not handle
+ the SilcSocketConnection reference counter at all. This must be
+ fixed.
o Logic for handling multiple same nicknames for example in private
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 Public and private key generation is now done everytime the program
- is run. Now, this is only for testing period as I've been lazy to
- do it any better for now. This must be fixed.
-
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 Non-blocking connection on the background must be stopped if some
+ other connection on same window has established. Now it is possible
+ that some non-blocking connection timeouts on the background when
+ we already have a working connection to some other place; things
+ goes bad.
- o Implement /set/if/do/while etc as in IRC2. Maybe post 1.0 task.
- Some scripting would be good.
+ 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...
+ This is not a showstopper.
- o Connection Authentication request resolving is missing and must be
- done. This is required by the protocol.
+ o Input line on UI is buggy. Cursor movement etc bugs. Too lazy to
+ fix it.
- 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.
+TODO In SILC Server
+===================
- o Write help files for commands. Nice format for the help files should
- be selected. I'm open for ideas.
+ o TODO in commands (command.c and command_reply.c):
- o All allocations and freeing needs to be checked for memory leaks.
+ o RESTART is not implemented
+ o In servers all command reply funtions should still call the
+ pending command reply even if the reply was error. In client
+ it is not called but in server, I think, it must be called.
+ When implementing this check that all commands handle the
+ situation correctly when it is called as pending command
+ (it should most likely check that cmd->pending == TRUE/FALSE).
+ o TODO in notify types (packet_receive.c):
-TODO In SILC Server
-===================
+ o SERVER_SIGNOFF notify type is not implemented
- 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 DNS/IP lookup blocks the server. This must be fixed. Check the
resolver stuff (resolver(3), resolver(5)). Either we have to do the
own resolver stuff (through scheduler, if possible without writing
too much own stuff) or use threads.
- o Lenght of the packet processing timeouts needs to be checked whether
- they are too short or too long. I haven't really tested whether they
- are suitable. They should be tested on high load which I haven't done
- at all yet.
-
- o INVITE command must set the channel's invite list if channel is
- invite-only channel.
-
- o Public and private key generation is now done everytime the program
- is run. Now, this is only for testing period as I've been lazy to
- do it any better for now. This must be fixed.
+ o Acceptance of incoming connections (client and server connections)
+ should be checked before key exchange protocol. Currently it is
+ checked at the authentication phase after KE, that is ok, but it should
+ be checked before starting KE, as well.
o Server says that it is able to listen on multiple ports but currently
that is bogus. It can, but internals are for single server.
- o Command lagging must implemented. Those commands (all currently) that
- has the LAG flag set they must not be allowed to be executed more than
- once, say, in 2 seconds.
-
- o Command flag usage in general is not implemented yet.
-
- 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 Channel message sending routines uses a lot of common code. Should
- create a common function for those instead of writing the same code
- again everytime, as done now.
-
- 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.
o Connection classes should be actually implemented in serverconfig.c.
They can be defined but they are totally ignored currently.
- o Acceptance of incoming connections (client and server connections)
- should be checked before key exchange protocol. Currently it is
- 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 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 Compression routines are missing. The protocol supports packet
compression thus it must be implemented. SILC Comp API must be
defined. zlib package is already included into the lib dir (in CVS,
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 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 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.
-
-
-Other Things TODO
-=================
-
- o Write manuals for server.
+ 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 Write manuals for client.
- o Write SILC Library Reference manual. This would include all the SILC
- API's with simple examples how the functions are to be used. This is
- pretty easy to create by taking all the functions plus their comments
- from source/header files. However, same sort of reference manual
- should be written for client and server as well.
+TODO in the protocol before SILC 0.x
+====================================
+
+ o New commands and features in the commands
+ (draft-riikonen-silc-spec-xx.txt):
+
+ o Define GETKEY command to fetch the public key of a server
+ and/or a client in the SILC Network.
+ o Define SENDKEY command to send your public key to a client
+ in the network. Sending to the server must not be done due
+ to various security reasons (the server must not trust the
+ public keys blindly without third party verification; that's
+ why SENDKEY is not for servers).
+ o Define AWAY command to set the indication flag whether the
+ client is present or not. Do not save the away message to the
+ server though.
+ o Define the channel founder property to be permanent locally in
+ the server so that channel founder can regain its rights even
+ if it disconnects from the server. Thus, define a new command
+ or channel user mode that can be used to set the channel founder
+ passphrase or public key that can be used in the authentication
+ when regaining the founder rights.
+
+ o New packets and features in the packets
+ (draft-riikonen-silc-pp-xx.txt):
+
+ o Define the Private Message packet to include private message
+ flags and define the flags. The flags could indicate whether
+ the message is, for example autoreply or the receiver should not
+ reply to the private messages. What other flags?
+ o Define the Channel Message packet to include channel message
+ flags and define the flags. Actually the flags should be same
+ as for the private message flags. This way we can implement
+ for example the CTCP style ACTION (/ME command) messages.
+
+ o New features in the KE/auth protocol
+ (draft-riikonen-silc-ke-auth-xx.txt):
+
+ o Define group exchange support for the SKE so that the SKE
+ could be performed among more than two entities. This is not
+ a showstopper and may be defined later.
TODO After 1.0
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