Avoid selecting fallbacks that change their IP addresses too often.
Select more fallbacks by ignoring the Guard flag, and allowing lower
cutoffs for the Running and V2Dir flags. Also allow a lower bandwidth,
and a higher number of fallbacks per operator (5% of the list).
Implements ticket 24785.
Add the generateFallbackDirLine.py script for automatically generating
fallback directory mirror lines from relay fingerprints. No more typos!
Add the lookupFallbackDirContact.py script for automatically looking up
operator contact info from relay fingerprints.
Implements ticket 24706.
This removes some redundant repeated lines.
Ticket 24681 will maintain the current fallback weights by changing
Tor's default fallback weight to 10.
Implements ticket 24679.
We only occasionally checked for fallbacks on the same machine.
And I'm not convinced it makes much of a difference with ~150 fallbacks.
Part of #22321.
To do this, we had to make sure it passes when the changes directory
is empty. I also tried to improve the quality of the output, and
fix some false-positive cases. Let's see how this goes!
Closes ticket 23564.
This is a large and important unit test for the hidden service version
3! It tests the service reachability for a client using different
consensus timings and makes sure that the computed hashring is the same
on both side so it is actually reachable.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This patch adds a script written by Nick for bug #13172 to clean up the
usage of ==, !=, <, >, <=, and >= by replacing them with their symbolic
OP_* counterpart. This will ensure that a tool like Coccinelle doesn't
get confused and silently ignore large blocks of code.
Increase the fallback stability requirement to 30 days.
When this was at 7 days, we chose far too many unstable fallbacks.
Decrease the guard flag requirement to 0.8.
When this was at 0.9, we lost too many fallbacks due to version upgrades.
(The running and v2dir flags ensure DirPorts are available to clients.)
Partial fixes to #20913.
Found using flake8 which gave the following output;
lintChanges.py:10:13: E225 missing whitespace around operator
lintChanges.py:25:1: E302 expected 2 blank lines, found 1
lintChanges.py:46:5: F841 local variable 'lines' is assigned to but never used
lintChanges.py:52:32: E228 missing whitespace around modulo operator
lintChanges.py:53:11: E201 whitespace after '('
lintChanges.py:56:41: E228 missing whitespace around modulo operator
Part of ticket 21096.
Sometimes, the fallback generation script doesn't add attributes to the
fallbacks in the list. If this happens, log an error, and avoid selecting
that fallback.
This is a rare issue: it should not change selection behaviour.
Fixes issue #20945.
Exclude relays that have been down for 1 or more days from the fallback
candidate list.
When a relay operator has multiple relays, this prioritises relays that are
up over relays that are down.
Fixes issue #20926.
7 days is a tradeoff between the expected time between major Tor releases,
which is 6 months, and the number of relays with enough stability.
Relays whose OnionOO stability timer is reset on restart by bug #18050
should upgrade to Tor 0.2.8.7 or later, which has a fix for this issue.
Closes ticket #20880; maintains short-term fix in e220214 in tor-0.2.8.2-alpha.
The functions it warns about are:
assert, memcmp, strcat, strcpy, sprintf, malloc, free, realloc,
strdup, strndup, calloc.
Also, fix a few lingering instances of these in the code. Use other
conventions to indicate _intended_ use of assert and
malloc/realloc/etc.
Only some very ancient distributions don't ship with Libevent 2 anymore,
even the oldest supported Ubuntu LTS version has it. This allows us to
get rid of a lot of compat code.
If we manually remove fallbacks in C by adding '/*' and '*/' on separate
lines, stem still parses them as being present, because it only looks at
the start of a line.
Add a comment to this effect in the generated source code.
Remove a fallback that changed its fingerprint after it was listed
This happened after to a software update:
https://lists.torproject.org/pipermail/tor-relays/2016-June/009473.html
Remove a fallback that changed IPv4 address
Remove two fallbacks that were slow to deliver consensuses,
we can't guarantee they'll be fast in future.
Blacklist all these fallbacks until operators confirm they're stable.
Operators have sent emails asking to have their relays added or
removed from the fallback list. Since none of the blacklisted
relays are in the hard-coded falback list, it does not need to
be changed.
Log a notice just before the script is about to perform a
potentially time-consuming operation
Clarify the warning when py2-ipaddress isn't found
Make log levels more consistent
No behavioural change (just logging)
As well as the existing reports of IPv6 address additions or removals,
the script now warns when keys change but IPv4:ORPort or
IPv6:IPv6ORPort remain the same.
Existing checks for other whitelist detail changes have also
been re-worded and upgraded to warnings.
This makes it easier for changes to be identified so operators can
be contacted to confirm whether the change is stable.
Also add misbehaving relays to updateFallbackDirs.py blacklist,
but leave them commented out in case it's a transient issue,
or it's been resolved by the download check fixes. (These
relays hang stem's downloader. It's unlikely they'll ever help
clients.)
Use IP address, effective family, and contact info to
discover and limit fallbacks to one per operator.
Also analyse netblock, ports, IP version, and Exit flag,
and print the results. Don't exclude any fallbacks from
the list because of netblocks, ports, IP version, or
Exit flag.
But as advertised bandwidth is controlled by relays,
use consensus weight and median weight to bandwidth ratio
to approximate measured bandwidth.
Includes minor comment changes and parameter reordering.
Previously, we would cut the list down to 100 fallbacks,
then check if they could serve a consensus, and comment
them out if they couldn't.
This would leave us with fewer than 100 active fallbacks.
Now, we stop when there are 100 active fallbacks.
Also count fallbacks with identical contact info.
Also fix minor logging issues.
Give each fallback a set weight of 10.0 for client selection.
Fallbacks must have at least 3000 consensus weight.
This is (nominally) 100 times the expected extra load of
20 kilobytes per second (50 GB per month).
Fixes issue #17905.
Improve the download test:
* Allow IPv4 DirPort checks to be turned off.
* Add a timeout to stem's consensus download.
* Actually check for download errors, rather than ignoring them.
* Simplify the timeout and download error checking logic.
Tweak whitelist/blacklist checks to be more robust.
Improve logging, make it warn by default.
Cleanse fallback comments more thoroughly:
* non-printables (yes, ContactInfo can have these)
* // comments (don't rely on newlines to prevent // */ escapes)
Document this convention.
Add a script to post-process .gcov files in order to stop nagging us
about excluded lines.
Teach cov-diff to handle these post-processed files.
Closes ticket 16792
Allow fallback directories which have been stable for 7 days
to work around #18050, which causes relays to submit descriptors
with 0 DirPorts when restarted. (Particularly during Tor version
upgrades.)
Ignore low fallback directory count in alpha builds.
Set the target count to 50.
Allow fallback directories which have been stable for 30 days
to work around #18050, which causes relays to submit descriptors
with 0 DirPorts when restarted. (Particularly during Tor version
upgrades.)
Ignore low fallback directory count in alpha builds.
* support maximum history age in _avg_generic_history()
* fix division-by-zero trap in _avg_generic_history()
* skip missing (i.e. null/None) intervals in _avg_generic_history()
* Python timedelta.total_seconds() function not available in 2.6;
replace with equivalent expression
* set DEBUG logging level to make relay exclusion reasons visible
* move CUTOFF_GUARD test to end in order to expose more exclusion
reasons
Patch by "starlight", merge modifications by "teor".
Allow cached or outdated Onionoo data to be used to choose
fallback directories, as long as it's less than a day old.
Modify last modified date checks in preparation for Onionoo change
"Tor has included a feature to fetch the initial consensus from nodes
other than the authorities for a while now. We just haven't shipped a
list of alternate locations for clients to go to yet.
Reasons why we might want to ship tor with a list of additional places
where clients can find the consensus is that it makes authority
reachability and BW less important.
We want them to have been around and using their current key, address,
and port for a while now (120 days), and have been running, a guard,
and a v2 directory mirror for most of that time."
Features:
* whitelist and blacklist for an opt-in/opt-out trial.
* excludes BadExits, tor versions that aren't recommended, and low
consensus weight directory mirrors.
* reduces the weighting of Exits to avoid overloading them.
* places limits on the weight of any one fallback.
* includes an IPv6 address and orport for each FallbackDir, as
implemented in #17327. (Tor won't bootstrap using IPv6 fallbacks
until #17840 is merged.)
* generated output includes timestamps & Onionoo URL for traceability.
* unit test ensures that we successfully load all included default
fallback directories.
Closes ticket #15775. Patch by "teor".
OnionOO script by "weasel", "teor", "gsathya", and "karsten".
These scripts are now a little more bulletproof, cache data a little
better, and generate more information. Notably, they search for the
vectors or edges to cut that would lower the size of the largest
SCC.
Extrainfo documents are now ed-signed just as are router
descriptors, according to proposal 220. This patch also includes
some more tests for successful/failing parsing, and fixes a crash
bug in ed25519 descriptor parsing.
This includes the link handshake variations for proposal220.
We'll use this for testing first, and then use it to extend our
current code to support prop220.
Additional fixes to make the change work;
- fix Python 2 vs 3 issues
- fix some PEP 8 warnings
- handle paths with numbers correctly
- mention the make rule in doc/HACKING.
Coccinelle is a semantic patching tool that can automatically change
C code via semantic patching.
This script also replaces realloc with reallocarray as appropriate.
I've copied the entries from changes/, labeled the ones that also
appeared in 0.2.4.22, sorted them lightly with a python script
(added to maint), and combined sections with the same name.
I didn't combine sections without a description (e.g. "Minor
bugfixes:"), since we'll probably add a description to those.
(I had a bad clone of Knuth's algorithm sitting around in an old code
repository of mine. I added orphan detection and smarter hyphenation;
it seems to give marginally better results than we had before.)
We've accumulated a lot of cruft in this directory over the years: so
much, that it passed the point of being so disorganized that we no
longer browsed through it to see how bad it had gotten.
This patch (based on changes by rl1987) tries to remove the most
useless items, and split the others into reasonable directories. It
creates a new scripts/ directory for maint and test scripts.
This patch was generated with the script below. No other changes are made in
this patch.
#############
# new directories
mkdir -p contrib/test-tools
mkdir -p contrib/or-tools
mkdir -p contrib/dirauth-tools
mkdir -p contrib/operator-tools
mkdir -p contrib/client-tools
mkdir -p contrib/test-tools
mkdir -p contrib/dist
mkdir -p contrib/dist/suse
mkdir -p contrib/win32build
mkdir -p scripts/maint
mkdir -p scripts/test
############
# Deleted -- nobody who wants this is going to be looking for it here any
# longer. Also, nobody wants it.
git rm contrib/auto-naming/README
# Deleted: We no longer do polipo.
git rm contrib/polipo/Makefile.mingw
git rm contrib/polipo/README
git rm contrib/polipo/polipo-mingw.nsi
# We haven't even tried to run this for ages. It is a relic of a bygone era
git rm contrib/mdd.py
# contrib/dir-tools/directory-archive/
# Tools for running a directory archive. No longer used - deleting them.
git rm contrib/directory-archive/crontab.sample
git rm contrib/directory-archive/fetch-all
git rm contrib/directory-archive/fetch-all-v3
git rm contrib/directory-archive/tar-them-up
git rm contrib/directory-archive/fetch-all-functions
git rm contrib/directory-archive/sort-into-month-folder
# This appears to be related to very old windows packaging stuff.
git rm contrib/bundle.nsi
git rm contrib/package_nsis-weasel.sh
git rm contrib/package_nsis.sh
git rm contrib/netinst.nsi
git rm contrib/torinst32.ico
git rm contrib/xenobite.ico
# This should not be needed for cross-compilation any more, should it?
git rm contrib/cross.sh
# I don't think anyone ever used this.
git rm contrib/make-signature.sh
# These are attempts to send tor controller commands from the command-line.
# They don't support modern authentication.
git rm contrib/tor-ctrl.sh
# this is for fetching about a tor server from a dirauth. But it
# doesn't authenticate the dirauth: yuck.
git rm contrib/sd
# wow, such unused, very perl4.
git rm contrib/tor-stress
####### contrib/dirauth-tools/
# Tools for running a directory authority
git mv contrib/add-tor contrib/dirauth-tools/
git mv contrib/nagios-check-tor-authority-cert contrib/dirauth-tools/
#######
# contrib/or-tools/
# Tools for examining relays
git mv contrib/check-tor contrib/or-tools/check-tor
git mv contrib/checksocks.pl contrib/or-tools/checksocks.pl
git mv contrib/exitlist contrib/or-tools/exitlist
#######
# contrib/operator-tools
# Tools for running a relay.
git mv contrib/linux-tor-prio.sh contrib/operator-tools/linux-tor-prio.sh
git mv contrib/tor-exit-notice.html contrib/operator-tools/tor-exit-notice.html
git mv contrib/tor.logrotate.in contrib/operator-tools/
######
# contrib/dist
git mv contrib/rc.subr contrib/dist/
git mv contrib/tor.sh.in contrib/dist/
git mv contrib/torctl.in contrib/dist/
git mv contrib/suse/* contrib/dist/suse/
######
# client-tools
git mv contrib/torify contrib/client-tools/torify
git mv contrib/tor-resolve.py contrib/client-tools/
######
# win32build
git mv contrib/package_nsis-mingw.sh contrib/win32build/
git mv contrib/tor.nsi.in contrib/win32build/
# Erinn didn't ask for this...
git mv contrib/tor-mingw.nsi.in contrib/win32build/
git mv contrib/tor.ico contrib/win32build/
######
# scripts/test
git mv contrib/cov-blame scripts/test/cov-blame
git mv contrib/cov-diff scripts/test/cov-diff
git mv contrib/coverage scripts/test/coverage
git mv contrib/scan-build.sh scripts/test/
######## scripts/maint
# Maintainance scripts
#
# These are scripts for developers to use when hacking on Tor. They mostly
# look at the Tor source in one way or another.
git mv contrib/findMergedChanges.pl scripts/maint/findMergedChanges.pl
git mv contrib/checkOptionDocs.pl scripts/maint/checkOptionDocs.pl
git mv contrib/checkSpace.pl scripts/maint/checkSpace.pl
git mv contrib/redox.py scripts/maint/redox.py
git mv contrib/updateVersions.pl scripts/maint/updateVersions.pl
git mv contrib/checkLogs.pl scripts/maint/checkLogs.pl
git mv contrib/format_changelog.py scripts/maint/
