Fixes bug 4856; bugfix on 0.0.6

This bug was introduced in 79fc5217, back in 2004.

he disagrees about what the code that we decided not to use would do

This is to address bug 4822, and CVE-2011-4576.

Fixes bug 4803.

We used to do this as a workaround for older Tors, but now it's never
the correct thing to do (especially since anything that didn't
understand RELAY_EARLY is now deprecated hard).

This patch should make us reject every Tor that was vulnerable to
CVE-2011-0427.  Additionally, it makes us reject every Tor that couldn't
handle RELAY_EARLY cells, which helps with proposal 110 (#4339).

Bug caught and patch provided by Vektor. Fixes bug 4778.t

Back in #1240, r1eo linked to information about how this could happen
with older Linux kernels in response to nmap.  Bugs #4545 and #4547
are about how our approach to trying to deal with this condition was
broken and stupid.  Thanks to wanoskarnet for reminding us about #1240.

This is a fix for the abovementioned bugs, and is a bugfix on
0.1.0.3-rc.

--enable-gcc-warnings enables two warnings that clang doesn't support,
so the build fails. We had hoped clang 3.0 would add those, but it
didn't, so let's just always disable those warnings when building with
clang. We can still fix it later once they add support

Fixes bug 4531; partial backport of e27a26d5.

Fixes bug 4535; bugfix on 0.2.2.28-beta; found by "troll_un"

Fix on 0.2.1.5-alpha; reported by troll_un

This avoids a possible strdup of an uninitialized buffer.

Fixes 4529; fix on 0.2.1.3-alpha; reported by troll_un.

Sebastian Hahn authored 13 years ago and Nick Mathewson committed 13 years ago

Backport of 68475fc5 which accidentally
only made it into master. Fixes bug 4547. Bug isn't in any released
version.

Now it will be easier for researchers to simulate Tor networks with
different values. Resolves ticket 4484.