tor/doc/TODO
2003-03-17 23:34:00 +00:00

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SPEC!! - Not specified
SPEC - Spec not finalized
NICK - nick claims
ARMA - arma claims
- Not done
* Top priority
. Partially done
o Done
D Deferred
X Abandoned
- Use a stronger cipher
NICK - 3des for now
- aes when we everybody has openssl 0.9.7
. Topics / circuits
o Implement topics
- Rotate circuits after N minutes?
- Circuits should expire when circuit->expire triggers
NICK . Handle half-open connections
- Figure out what causes connections to close, standardize
when we mark a connection vs when we tear it down
NICK - Look at what ssl does to keep from mutating data streams
NICK . On the fly compression of each stream
o Clean up the event loop (optimize and sanitize)
ARMA - Remove that awful concept of 'roles'
ARMA - Exit policies
- Spec how to write the exit policies
- Path selection algorithms
- Let user request certain nodes
- And disallow certain nodes
- Choose path by jurisdiction, etc?
D Implement our own memory management, at least for common structs
. Appropriate logging
- Come up with convention for what log level means what
- Make code follow convention
. Terminology
o Circuits, topics, cells stay named that
- 'Connection' gets divided, or renamed, or something?
. DNS farm
o Distribute queries onto the farm, get answers
o Preemptively grow a new worker before he's needed
- Prune workers when too many are idle
o Keep track of which connections are in dns_wait
o Need to cache positives/negatives on the tor side
o Keep track of which queries have been asked
. Better error handling when
. An address doesn't resolve
- We have max workers running
- Consider taking the master out of the loop?
. Directory servers
- Automated reputation management
ARMA - Include key in source; sign directories
ARMA - Have directories list recommended-versions
- Quit if running the wrong version
- Command-line option to override quit
. Add more information to directory server entries
- Exit policies
- jurisdiction? others?
SPEC!! - Figure out how to do threshold directory servers
. Scrubbing proxies
- Find an smtp proxy?
- Find an ftp proxy? Figure out how that would work?
- Wait until there are packet redirectors for Linux
. Get socks4a support into Mozilla
. Get tor to act like a socks server
o socks4, socks4a
- socks5
SPEC!! - Handle socks commands other than connect, eg, bind?
- Develop rendezvous points
D Implement reply onions
D Deploy and manage open source development site.
. Documentation
. Discussion of socks, tsocks, etc
o On-the-network protocol
o Onions
o Cells
. Better comments for functions!
- Tests
NICK - Testing harness/infrastructure
- Unit tests
- System tests (how?)
- Performance tests, so we know when we've improved
. webload infrastructure (Bruce)
. httperf infrastructure (easy to set up)
. oprofile (installed in RH 8.0)
D Deploy a widespread network
. Router twins
o Choose twin if primary is down, when laying circuit
- Load balancing between twins
- Keep track of load over links/nodes, to
know who's hosed
NICK - Daemonize and package
o Teach it to fork and background
- Red Hat spec file
- Debian spec file equivalent
. Autoconf
. Which .h files are we actually using? Port to:
o Linux
o BSD
. Solaris
. Windows
NICK . OS X
. Move away from openssl
o Abstract out crypto calls
D Look at ndss, others? Just include code?
. transition addr to sin_addr (huh?)
. Clean up the number of places that get to look at prkey
SPEC!! - Non-clique topologies, clearer bandwidth management
. Look at OR handshake in more detail
o Spec it
- Merge OR and OP handshakes?
- Periodic link key rotation. Spec?
- More flexibility in node addressing
- Support IPv6 rather than just 4
- Handle multihomed servers