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backport candidate:

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If not enough of our entry guards are available so we add a new
one, we might use the new one even if it overlapped with the
current circuit's exit relay (or its family). Anonymity bugfix
pointed out by rovv.


svn:r16698
This commit is contained in:
Roger Dingledine 2008-08-31 06:33:39 +00:00
parent 2efe3e7675
commit cfff21e78a
2 changed files with 11 additions and 2 deletions
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6
ChangeLog
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@ -1,4 +1,4 @@
Changes in version 0.2.1.5-alpha - 2008-08-??
Changes in version 0.2.1.5-alpha - 2008-09-??
o Major features [IPv6 support]:
- Convert many internal address representations to optionally hold
IPv6 addresses.
@ -18,6 +18,10 @@ Changes in version 0.2.1.5-alpha - 2008-08-??
a digest of all zeroes, or asks to extend back to the relay that
sent the extend cell, tear down the circuit. Ideas suggested
by rovv.
- If not enough of our entry guards are available so we add a new
one, we might use the new one even if it overlapped with the
current circuit's exit relay (or its family). Anonymity bugfix
pointed out by rovv.
o Minor bugfixes:
- Recover 3-7 bytes that were wasted per memory chunk. Fixes bug

7
src/or/circuitbuild.c
View File

@ -2476,8 +2476,13 @@ choose_random_entry(cpath_build_state_t *state)
* be a long time til we get it. -RD */
r = add_an_entry_guard(NULL, 0);
if (r) {
smartlist_add(live_entry_guards, r);
entry_guards_changed();
/* XXX we start over here in case the new node we added shares
* a family with our exit node. There's a chance that we'll just
* load up on entry guards here, if the network we're using is
* one big family. Perhaps we should teach add_an_entry_guard()
* to understand nodes-to-avoid-if-possible? -RD */
goto retry;
}
}
if (!r && need_uptime) {