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Remove the obsolete doc/TODO.* files

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Closes bug #7730.
This commit is contained in:
Nick Mathewson 2012-12-17 22:26:05 -05:00
parent 9b9cc6774f
commit a60680c226
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12
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We've split out our TODO into three files: We no longer track our TODO lists in git. To see open Tor tasks, visit
our bugtracker and wiki at trac.torproject.org.
TODO.02x is the list of items we're planning to get done in the next
stable release.
TODO.external lives in svn under /projects/todo/. It's the list of
external constraints and deliverables that we all need to keep in mind.
TODO.future is the list of other items we plan to get to in later releases.

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Legend:
SPEC!! - Not specified
SPEC - Spec not finalized
N - nick claims
R - arma claims
P - phobos claims
S - Steven claims
E - Matt claims
M - Mike claims
J - Jeff claims
I - ioerror claims
W - weasel claims
K - Karsten claims
- Not done
* Top priority
. Partially done
o Done
d Deferrable
D Deferred
X Abandoned
=======================================================================
Things Roger would be excited to see:
Nick
* Look at Roger's proposal 141 discussions on or-dev, and help us
decide how to proceed.
. Tors start believing the contents of NETINFO cells.
- respond to Steven's red-team TLS testing (a.k.a, look at a packet
dump and compare)
Matt
- Fit Vidalia in 640x480 again.
- Vidalia should avoid stomping on your custom exit policy lines
just because you click on 'save' for a totally different config thing.
- How much space do we save in TBB by stripping symbols from Vidalia
first? Good idea or crazy idea?
(phobos adds you save about 12MB total across all exes by stripping
them) In fact, tbb-1.19 is stripped exes.
ioerror
* weather.torproject.org should go live.
- Keep advocating new Tor servers and working with orgs like Mozilla
to let them like Tor.
- Find out what happened to the buildbot and get it back up:
http://tor-buildbot.freehaven.net:8010/
- Learn about locking memory pages that have sensitive content. Get
that started in Tor.
- Translation portal
- Vidalia html help files
- should we i18nize polipo's error messages too?
- how to get our diagrams translated, and how to get our screenshots
from the right language?
- Some of our translated wml files are very old -- so old that they
are harmful to leave in place. We need some sort of way to notice
this and disable them.
Steven
- Move proposal 131 or equivalent forward.
- Keep bugging us about exploits on the .exit notation.
- Mike's question #3 on https://www.torproject.org/volunteer#Research
- Worthwhile shipping TBB with some local html help files that come
as bookmarks?
Andrew
Weasel
- Figure out how to make Vidalia and Tor play nicely on Debian, make
the necessary modifications, and make some Vidalia debs that pass
muster.
- Fix bug 393.
- Get oftc to switch to Tor dns bulk exitlist. Or tell us why it's
not suitable yet.
- Move proposal 134 forward.
- putting port predictions in state file
- if tor hasn't been used in a while it stops fetching consensus
documents. Retain that state over restarts.
Roger
- Finish tor-doc-bridge.wml
. Fix FAQ entry on setting up private Tor network
- Did we actually apply Steven's dkimproxy patch?
- Brainstorm about safe but effective ways for vidalia to
auto-update its user's bridges via Tor in the background.
- it doesn't count as successfully opening a circuit if it's not
an exit circuit.
Mike:
- Roger wants to get an email every time there's a blog change,
e.g. a comment. That way spam doesn't go undetected for weeks.
- Or, maybe just disable linking from blog comments entirely?
(phobos mitigates this by checking it a few times a week)
=======================================================================
Bugs/issues for Tor 0.2.0.x:
. we should have an off-by-default way for relays to dump geoip data to
a file in their data directory, for measurement purposes.
o Basic implementation
N - Include probability-of-selection
R d let bridges set relaybandwidthrate as low as 5kb
Documentation for Tor 0.2.0.x:
o Proposals:
o 111: Prioritize local traffic over relayed.
o 113: mark as closed close.
o document the "3/4 and 7/8" business in the clients fetching consensus
documents timeline.
R - then document the bridge user download timeline.
- HOWTO for DNSPort. See tup's wiki page.
. Document transport and natdport in a good HOWTO.
- Quietly document NT Service options: revise (or create) FAQ entry
=======================================================================
For 0.2.1.x-alpha:
R d bug: if we launch using bridges, and then stop using bridges, we
still have our bridges in our entryguards section, and may use them.
o add an event to report geoip summaries to vidalia for bridge relays,
so vidalia can say "recent activity (1-8 users) from sa".
R - investigate: it looks like if the bridge authority is unreachable,
we're not falling back on querying bridges directly?
o if "no running bridges known", an application request should make
us retry all our bridges.
For 0.2.1.x:
- Proposals to do:
o 110: avoid infinite-length circuits
* Figure out the right value for max RELAY_EARLY cells (Bug 878)
- 117: IPv6 Exits
- Internal code support for ipv6:
o Clone ipv6 functions (inet_ntop, inet_pton) where they don't exist.
o Many address variables need to become tor_addr_t
o addr in connection_t
o n_addr in extend_info_t
- Teach resolving code how to handle ipv6.
. Teach exit policies about ipv6 (consider ipv4/ipv6 interaction!)
o Use IPv6 in connect/connected/failed-exitpolicy cells
o accept ipv6 from socks
o Generate END_REASON_EXITPOLICY cells right
. ... and parse them right
. Generate new BEGIN cell types and parse them right
- Detect availability of ipv6
- Advertise availability of ipv6.
- Geoip support, if only to add a zone called "ipv6"
K . 121: Hidden service authentication:
- missing: delayed descriptor publication for 'stealth' mode.
o 128: families of private bridges
o 135: simplify configuration of private tor networks.
K - 143: Improvements of Distributed Hidden Service Descriptor Storage:
only easy parts for 0.2.1.x, defer complex ones to 0.2.2.x.
o 148: Stream end reasons from the client side should be uniform.
K o 155: Four Improvements of Hidden Service Performance
- 145: Separate "suitable from a guard" from "suitable as a new guard"
- 146: Adding new flag to reflect long-term stability
- 149: Using data from NETINFO cells
o Don't extend a circuit over a noncanonical connection with
mismatched address.
o Apply rovv's bugfixes wrt preferring canonical connections.
o Make sure that having a non-canonical connection doesn't count
as _having_ a connection for the purpose of connecting to others,
and that when no canonical connection exists, we make one.
- Learn our outgoing IP address from netinfo cells?
- Learn skew from netinfo cells?
o 157: Make certificate downloads specific.
- Proposals to write:
- Fix voting to handle bug 608 case when multiple servers get
Named.
N . Draft proposal for GeoIP aggregation (see external constraints *)
. Figure out how to make good use of the fallback consensus file. Right
now many of the addresses in the fallback consensus will be stale,
so it will take dozens of minutes to bootstrap from it. This is a
bad first Tor experience. But if we check the fallback consensus
file *after* we fail to connect to any authorities, then it may
still be valuable as a blocking-resistance step.
o Write the proposal.
- Patch our tor.spec rpm package so it knows where to put the fallback
consensus file.
. Put bandwidth weights in the networkstatus? So clients get weight
their choices even before they have the descriptors; and so
authorities can put in more accurate numbers in the future.
- Spec compliance:
* Make sure that clients could do the new handshake without sending any
certs, if they wanted.
- Tiny designs to write:
- If a relay publishes a new descriptor with a significantly lower
uptime or with a new IP address, then we should consider its current
"running" interval to have ended even if it hadn't yet failed its
third reachability test. the interval ended when the new descriptor
appeared, and a new interval began then too.
- Authority improvements:
R - authorities should initiate a reachability test upon first
glimpsing a new descriptor.
- Use less bandwidth
- Use if-modified-since to download consensuses
- Testing
- Better unit test coverage
- Verify that write limits to linked connections work.
- Security improvements
- make is-consensus-fresh-enough check tighter.
- If we haven't tried downloading a consensus for ages since we're tired,
try getting a new one before we use old descriptors for a circuit.
Related to bug 401. [What does "since we're tired" mean? -RD]
[I don't know. -NM]
- Feature removals and deprecations:
- Get rid of the v1 directory stuff (making, serving, and caching)
. First verify that the caches won't flip out?
o If they will, just stop the caches from caching for now
. perhaps replace it with a "this is a tor server" stock webpage.
- Get the debs to set DirPortFrontPage in the default.
- Decide how to handle DirPortFrontPage files with image links.
- Can we deprecate controllers that don't use both features?
- Both TorK and Vidalia use VERBOSE_NAMES.
- TorK uses EXTENDED_EVENTS. Vidalia does not. (As of 9 Dec.)
- Matt is checking whether Vidalia would break if we started to use
EXTENDED_EVENTS by default. He says no.
External tool improvements:
- Get IOCP patches into libevent
Nice to have for 0.2.1.x:
- Proposals, time permitting
- 134: handle authority fragmentation.
- 140: Provide diffs betweeen consensuses
- Handle multi-core cpus better
- Split circuit AES across cores
- Split cell_queue_t into a new structure with a processed subqueue,
an unprocessed subqueue, and a symmetric key.
- Write a function to pull cells from the unprocessed subqueue,
en/decrypt them, and place them on the processed subqueue.
- When a cell is added to a queue that previously had no
unprocessed cells, put that queue into a set of queues that
need to be processed. When the last cell is processed in a
queue, remove it from the set of queues that need to be
processed.
- Worker code to process queues in round-robin fashion.
- Think about how to be fair to differet circuits _and_ about to get
CPU-affinity, if that matters.
- When a cell is processed and placed onto a processed subqueue
that was previously empty, _and_ the or_conn output buffer
that the queue is targetting is empty, stick the buffer onto a
list of buffers that need attention and notify the main
thread if it was not already on the list.
- When the main thread gets notified, it pumps those buffers.
(i.e., it puts cells onto them from some of their circuits).
- To free a queue that is not currently processing, grab its lock
and free it.
- To free a queue that _is_ processing, .... ?
- Documentation
P - Make documentation realize that location of system configuration file
will depend on location of system defaults, and isn't always /etc/torrc.
- Small controller features
- A status event for when tor decides to stop fetching directory info
if the client hasn't clicked recently: then make the onion change too.
o Add a status event when new consensus arrives
- Windows build
P - create a "make win32-bundle" for vidalia-privoxy-tor-torbutton bundle
- Is this obsolete with msi bundle coming soon asks phobos
- Refactor bad code:
- connection_or_get_by_identity_digest() and connection_good_enough_for
_extend() could be merged into a smarter variant, perhaps.
- Refactor the HTTP logic so the functions aren't so large.
- Refactor buf_read and buf_write to have sensible ways to return
error codes after partial writes
- deprecate router_digest_is_trusted_dir() in favor of
router_get_trusteddirserver_by_digest()
- Should be trivial
- Tor logs the libevent version on startup, for debugging purposes.
This is great. But it does this before configuring the logs, so
it only goes to stdout and is then lost.
(phobos asks, is this still the case? because it shows up in my
logs)
- Deprecations
- Even clients run rep_hist_load_mtbf_data(). This doesn't waste memory
unless they had previously been non-clients collecting MTBF data.
Dump it anyway?
- Unless we start using ftime functions, dump them.
- can we deprecate the FastFirstHopPK config option?
- The v2dir flag isn't used for anything anymore, right? If so, dump it.
- can we deprecate 'getinfo network-status'?
- Dump most uint32_t addr functions.
- do the part of the "abandon .exit" proposal that involves isolating
circuits which have used a .exit stream from those that haven't
Defer:
- Proposals
- 118: Listen on and advertise multiple ports:
- Tor should be able to have a pool of outgoing IP addresses that it is
able to rotate through. (maybe. Possible overlap with proposal 118.)
- config option to publish what ports you listen on, beyond
ORPort/DirPort. It should support ranges and bit prefixes (?) too.
- Need to figure out the right format for routerinfo_t on this.
- 147: Eliminate the need for v2 directories in generating v3 directories
- Proposals to write.
d Something for bug 469, to limit connections per IP.
d Do we want to maintain our own set of entryguards that we use as
next hop after the bridge?
d Possibly: revise link protocol to allow big circuit IDs,
variable-length cells, proposal-110 stuff, and versioned CREATES?
d Fetch an updated geoip file from the directory authorities.
R - bridge communities (revive proposal 128)
. spec
. deploy
- man page entries for Alternate*Authority config options
- Tiny designs to write
- Better estimate of clock skew; has anonymity implications. Clients
should estimate their skew as median of skew from servers over last
N seconds, but for servers this is not so easy, since a server does
not choose who it connects to.
- Do TLS connection rotation more often than "once a week" in the
extra-stable case.
(One reason not to do it more often is because the old TLS conn
probably has a circuit on it, and we don't really want to build up
dozens of TCP connections to all the other extra-stable relays.)
- Use less RAM
- Optimize cell pool allocation.
- Support (or just always use) jemalloc (if it helps)
- mmap more files.
- Pull serverdescs off buffers as they arrive.
- Allocate routerstatus_t objects on a per-networkstatus memchunk.
- Split TLS across multiple cores
- "In the future, we should migrate to LOCAL_APPDATA entirely."
- Use more mid-level and high-level libevent APIs
- For dns?
- For http?
- For buffers?
- Proposals to write
- steven's plan for replacing check.torproject.org with a built-in
answer by tor itself.
- Refactor bad code:
- Streamline how we pick entry nodes: Make choose_random_entry() have
less magic and less control logic.
- Move all status info out of routerinfo into local_routerstatus. Make
"who can change what" in local_routerstatus explicit. Make
local_routerstatus (or equivalent) subsume all places to go for "what
router is this?"
o Don't call time(NULL) so much; instead have a static time_t field
that gets updated only a handful of times per second.
- Refactor unit tests into multiple files
- Make Tor able to chroot itself
o allow it to load an entire config file from control interface
- document LOADCONF
- log rotation (and FD passing) via control interface
- chroot yourself, including inhibit trying to read config file
and reopen logs, unless they are under datadir.
- Should be trivial:
- Base relative control socket paths (and other stuff in torrc) on datadir.
o enforce a lower limit on MaxCircuitDirtiness and CircuitBuildTimeout.
- Make 'safelogging' extend to info-level logs too.
- don't do dns hijacking tests if we're reject *:* exit policy?
(deferred until 0.1.1.x is less common)
- More consistent error checking in router_parse_entry_from_string().
I can say "banana" as my bandwidthcapacity, and it won't even squeak.
d Interface for letting SOAT modify flags that authorities assign.
(How to keep the authority from clobbering them afterwards?

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Nick's initial priorities for Tor 0.2.2:
NOTE 1: I'm not looking at fiddly little stuff from TODO.021 yet. We
can do a step where we triage the nice-to-have issues.
NOTE 2: It's easy to list stuff like this with no time estimates and
no target dates. I think we should pick a target date for
0.2.2, figure out how long the stuff we want will take, and
triage accordingly, or vice versa.
- Performance, mostly protocol-neutral.
o Revise how we do bandwidth limiting and round-robining between
circuits on a connection.
. Revise how we do bandwidth limiting and round-robining between
connections.
- Better flow-control to avoid filling buffers on routers.
- Figure out good ways to instrument Tor internals so we can tell
how well our bandwidth and flow-control stuff is actually working.
- What ports eat the bandwidth?
- How full do queues get?
- How much latency do queues get?
- Rate limit at clients:
- Give clients an upper bound on how much they're willing to use
the network if they're not relaying?
- ... or group client circuits by IP at the server and rate-limit
like that.
- Use if-modified-since to download consensuses
- Other features
- Proposals to implement:
- 146: reflect long-term stability in consensuses
- 147: Stop using v2 directories to generate v3 votes.
- Start pinging as soon as we learn about a relay, not on a
22-minute cycle. Prioritize new and volatile relays for
testing.
- Proposals to improve and implement
- 158: microdescriptors
o Revise proposal
- Implement
- Proposals to improve and implement if not broken
D IPv6 support. (Parts of 117, but figure out how to handle DNS
requests.)
- 140: Directory diffs
- Need a decent simple C diff implementation.
- Need a decent simple C ed patch implementation.
- 149: learn info from netinfo cells.
o Start discussion
- Revise proposal based on discussion.
X 134: handle authority fragmentation (Needs more analysis)
- 165: Easy migration for voting authority sets
- 163: Detect client-status better
o Write proposal
- Possibly implement, depending on discussion.
- 164: Have authorities report relay and voting status better: make it
easy to answer, "Why is my server not listed/not Guard/not
Running/etc"
o Write proposal
- Possibly implement, depending on discussion
- 162: Have consensuses come in multiple "flavours".
o Write proposal
- Possibly implement, depending on discussion.
- Needs a proposal, or at least some design
- Weaken the requirements for being a Guard, based on K's
measurements.
K - Finish measurements
K? - Write proposal
- Adaptive timeouts for giving up on circuits and streams.
M - Revise proposal 151
- Downweight guards more sensibly: be more forgiving about using
Guard nodes as non-first-hop.
- Write proposal.
- Lagged weight updates in consensuses: don't just move abruptly.
M? - Write proposal
d Don't kill a circuit on the first failed extend.
- Installers
- Switch to MSI on win32
- Use Thandy, perhaps?
o Deprecations
o Make .exit safe, or make it off-by-default.

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[This file moved to svn in /projects/todo/. More people can edit
it more easily there. -RD]

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Legend:
SPEC!! - Not specified
SPEC - Spec not finalized
N - nick claims
R - arma claims
P - phobos claims
S - Steven claims
E - Matt claims
M - Mike claims
J - Jeff claims
I - ioerror claims
W - weasel claims
K - Karsten claims
- Not done
* Top priority
. Partially done
o Done
d Deferrable
D Deferred
X Abandoned
=======================================================================
Later, unless people want to implement them now:
- Actually use SSL_shutdown to close our TLS connections.
- Include "v" line in networkstatus getinfo values.
[Nick: bridge authorities output a networkstatus that is missing
version numbers. This is inconvenient if we want to make sure
bridgedb gives out bridges with certain characteristics. -RD]
[Okay. Is this a separate item, or is it the same issue as the lack of
a "v" line in response to the controller GETINFO command? -NM]
- MAYBE kill stalled circuits rather than stalled connections. This is
possible thanks to cell queues, but we need to consider the anonymity
implications.
- Make resolves no longer use edge_connection_t unless they are actually
_on_ a socks connection: have edge_connection_t and (say)
dns_request_t both extend an edge_stream_t, and have p_streams and
n_streams both be linked lists of edge_stream_t.
- Generate torrc.{complete|sample}.in, tor.1.in, the HTML manual, and the
online config documentation from a single source.
- It would be potentially helpful to respond to https requests on
the OR port by acting like an HTTPS server.
- We should get smarter about handling address resolve failures, or
addresses that resolve to local IPs. It would be neat to retry
them, since right now we just close the stream. But we need to
make sure we don't retry them on the same exit as before. But if
we mark the circuit, then any user who types "localhost" will
cycle through circuits till they run out of retries. See bug 872.
Can anybody remember why we wanted to do this and/or what it means?
- config option __ControllerLimit that hangs up if there are a limit
of controller connections already.
[This was mwenge's idea. The idea is that a Tor controller can
"fill" Tor's controller slot quota, so jerks can't do cross-protocol
attacks like the http form attack. -RD]
- Bridge issues
. Ask all directory questions to bridge via BEGIN_DIR.
- use the bridges for dir fetches even when our dirport is open.
- drop 'authority' queries if they're to our own identity key; accept
them otherwise.
- give extend_info_t a router_purpose again
If somebody wants to do this in some version, they should:
- Create packages for Maemo/Nokia 800/810, requested by Chris Soghoian
- debian already makes ARM-arch debs, can maemo use these asks
phobos?
- More work on AvoidDiskWrites
- Make DNSPort support TCP DNS.
* * * * Roger, please sort these: * * * *
- bridge communities with local bridge authorities:
- clients who have a password configured decide to ask their bridge
authority for a networkstatus
- be able to have bridges that aren't in your torrc. save them in
state file, etc.
- Consider if we can solve: the Tor client doesn't know what flags
its bridge has (since it only gets the descriptor), so it can't
make decisions based on Fast or Stable.
- Some mechanism for specifying that we want to stop using a cached
bridge.
=======================================================================
Future versions:
- Protocol
- Our current approach to block attempts to use Tor as a single-hop proxy
is pretty lame; we should get a better one.
- Allow small cells and large cells on the same network?
- Cell buffering and resending. This will allow us to handle broken
circuits as long as the endpoints don't break, plus will allow
connection (tls session key) rotation.
- Implement Morphmix, so we can compare its behavior, complexity,
etc. But see paper breaking morphmix.
- Other transport. HTTP, udp, rdp, airhook, etc. May have to do our own
link crypto, unless we can bully DTLS into it.
- Need a relay teardown cell, separate from one-way ends.
(Pending a user who needs this)
- Handle half-open connections: right now we don't support all TCP
streams, at least according to the protocol. But we handle all that
we've seen in the wild.
(Pending a user who needs this)
- Directory system
- BEGIN_DIR items
- handle connect-dir streams that don't have a chosen_exit_name set.
- Have a "Faster" status flag that means it. Fast2, Fast4, Fast8?
- Add an option (related to AvoidDiskWrites) to disable directory
caching. (Is this actually a good idea??)
X Add d64 and fp64 along-side d and fp so people can paste status
entries into a url. since + is a valid base64 char, only allow one
at a time. Consider adding to controller as well.
[abandoned for lack of demand]
- Some back-out mechanism for auto-approval on authorities
- a way of rolling back approvals to before a timestamp
- Consider minion-like fingerprint file/log combination.
X Have new people be in limbo and need to demonstrate usefulness
before we approve them.
- Hidden services:
d Standby/hotswap/redundant hidden services: needs a proposal.
- you can insert a hidserv descriptor via the controller.
- auth mechanisms to let hidden service midpoint and responder filter
connection requests: proposal 121.
- Let each hidden service (or other thing) specify its own
OutboundBindAddress?
- Server operation
- If the server is spewing complaints about raising your ulimit -n,
we should add a note about this to the server descriptor so other
people can notice too.
- When we hit a funny error from a dir request (eg 403 forbidden),
but tor is working and happy otherwise, and we haven't seen many
such errors recently, then don't warn about it.
- Controller
- Implement missing status events and accompanying getinfos
- DIR_REACHABLE
- BAD_DIR_RESPONSE (Unexpected directory response; maybe we're behind
a firewall.)
- BAD_PROXY (Bad http or https proxy)
- UNRECOGNIZED_ROUTER (a nickname we asked for is unavailable)
- Status events related to hibernation
- something about failing to parse our address?
from resolve_my_address() in config.c
- sketchy OS, sketchy threading
- too many onions queued: threading problems or slow CPU?
- Implement missing status event fields:
- TIMEOUT on CHECKING_REACHABILITY
- GETINFO status/client, status/server, status/general: There should be
some way to learn which status events are currently "in effect."
We should specify which these are, what format they appear in, and so
on.
- More information in events:
- Include bandwidth breakdown by conn->type in BW events.
- Change circuit status events to give more details, like purpose,
whether they're internal, when they become dirty, when they become
too dirty for further circuits, etc.
- Change stream status events analogously.
- Expose more information via getinfo:
- import and export rendezvous descriptors
- Review all static fields for additional candidates
- Allow EXTENDCIRCUIT to unknown server.
- We need some way to adjust server status, and to tell tor not to
download directories/network-status, and a way to force a download.
- Make everything work with hidden services
- Performance/resources
- per-conn write buckets
- separate config options for read vs write limiting
(It's hard to support read > write, since we need better
congestion control to avoid overfull buffers there. So,
defer the whole thing.)
- Rate limit exit connections to a given destination -- this helps
us play nice with websites when Tor users want to crawl them; it
also introduces DoS opportunities.
- Consider truncating rather than destroying failed circuits,
in order to save the effort of restarting. There are security
issues here that need thinking, though.
- Handle full buffers without totally borking
- Rate-limit OR and directory connections overall and per-IP and
maybe per subnet.
- Misc
- Hold-open-until-flushed now works by accident; it should work by
design.
- Display the reasons in 'destroy' and 'truncated' cells under
some circumstances?
- Make router_is_general_exit() a bit smarter once we're sure what
it's for.
- Automatically determine what ports are reachable and start using
those, if circuits aren't working and it's a pattern we
recognize ("port 443 worked once and port 9001 keeps not
working").
- Security
- some better fix for bug #516?
- Directory guards
- Mini-SoaT:
- Servers might check certs for known-good ssl websites, and if
they come back self-signed, declare themselves to be
non-exits. Similar to how we test for broken/evil dns now.
- Authorities should try using exits for http to connect to some
URLS (specified in a configuration file, so as not to make the
List Of Things Not To Censor completely obvious) and ask them
for results. Exits that don't give good answers should have
the BadExit flag set.
- Alternatively, authorities should be able to import opinions
from Snakes on a Tor.
- Bind to random port when making outgoing connections to Tor servers,
to reduce remote sniping attacks.
- Audit everything to make sure rend and intro points are just as
likely to be us as not.
- Do something to prevent spurious EXTEND cells from making
middleman nodes connect all over. Rate-limit failed
connections, perhaps?
- DoS protection: TLS puzzles, public key ops, bandwidth exhaustion.
- Needs thinking
- Now that we're avoiding exits when picking non-exit positions,
we need to consider how to pick nodes for internal circuits. If
we avoid exits for all positions, we skew the load balancing. If
we accept exits for all positions, we leak whether it's an
internal circuit at every step. If we accept exits only at the
last hop, we reintroduce Lasse's attacks from the Oakland paper.
- Windows server usability
- Solve the ENOBUFS problem.
- make tor's use of openssl operate on buffers rather than sockets,
so we can make use of libevent's buffer paradigm once it has one.
- make tor's use of libevent tolerate either the socket or the
buffer paradigm; includes unifying the functions in connect.c.
- We need a getrlimit equivalent on Windows so we can reserve some
file descriptors for saving files, etc. Otherwise we'll trigger
asserts when we're out of file descriptors and crash.
- Documentation
- a way to generate the website diagrams from source, so we can
translate them as utf-8 text rather than with gimp. (svg? or
imagemagick?)
. Flesh out options_description array in src/or/config.c
. multiple sample torrc files
- Refactor tor man page to divide generally useful options from
less useful ones?
- Add a doxygen style checker to make check-spaces so nick doesn't drift
too far from arma's undocumented styleguide. Also, document that
styleguide in HACKING. (See r9634 for example.)
- exactly one space at beginning and at end of comments, except i
guess when there's line-length pressure.
- if we refer to a function name, put a () after it.
- only write <b>foo</b> when foo is an argument to this function.
- doxygen comments must always end in some form of punctuation.
- capitalize the first sentence in the doxygen comment, except
when you shouldn't.
- avoid spelling errors and incorrect comments. ;)
- Packaging
- The Debian package now uses --verify-config when (re)starting,
to distinguish configuration errors from other errors. Perhaps
the RPM and other startup scripts should too?
- add a "default.action" file to the tor/vidalia bundle so we can
fix the https thing in the default configuration:
https://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ#PrivoxyWeirdSSLPort
=======================================================================
Documentation, non-version-specific.
- Specs
- Mark up spec; note unclear points about servers
NR - write a spec appendix for 'being nice with tor'
- Specify the keys and key rotation schedules and stuff
. Finish path-spec.txt
- Mention controller libs someplace.
- Remove need for HACKING file.
- document http://wiki.noreply.org/noreply/TheOnionRouter/TransparentProxy on freebsd and osx
P - figure out rpm spec files for bundles of vidalia-tor-polipo
P - figure out polipo install scripts for bundles of vidalia-tor-polipo on osx, win32
- figure out selinux policy for tor
P - change packaging system to more automated and specific for each
platform, suggested by Paul Wouter
P - Setup repos for redhat and suse rpms & start signing the rpms the
way package management apps prefer
Website:
J . tor-in-the-media page
P - Figure out licenses for website material.
(Phobos reccomends the Open Publication License with Option A at
http://opencontent.org/openpub/)
P - put the logo on the website, in source form, so people can put it on
stickers directly, etc.
P - put the source image for the stickers on the website, so people can
print their own
P - figure out a license for the logos and docs we publish (trademark
figures into this)
(Phobos reccomends the Open Publication License with Option A at
http://opencontent.org/openpub/)
I - add a page for localizing all tor's components.
- It would be neat if we had a single place that described _all_ the
tor-related tools you can use, and what they give you, and how well they
work. Right now, we don't give a lot of guidance wrt
torbutton/foxproxy/privoxy/polipo in any consistent place.
P - create a 'blog badge' for tor fans to link to and feature on their
blogs. A sample is at http://interloper.org/tmp/tor/tor-button.png
- More prominently, we should have a recommended apps list.
- recommend pidgin (gaim is renamed)
- unrecommend IE because of ftp:// bug.
- Addenda to tor-design
- we should add a preamble to tor-design saying it's out of date.
- we should add an appendix or errata on what's changed.
- Tor mirrors
- make a mailing list with the mirror operators
o make an automated tool to check /project/trace/ at mirrors to
learn which ones are lagging behind.
- auto (or manually) cull the mirrors that are broken; and
contact their operator?
- a set of instructions for mirror operators to make their apaches
serve our charsets correctly, and bonus points for language
negotiation.
- figure out how to load-balance the downloads across mirrors?
- ponder how to get users to learn that they should google for
"tor mirrors" if the main site is blocked.
- find a mirror volunteer to coordinate all of this