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Nick Mathewson 62fb209d83 Stop frobbing timestamp_dirty as our sole means to mark circuits unusable 
In a number of places, we decrement timestamp_dirty by
MaxCircuitDirtiness in order to mark a stream as "unusable for any
new connections.

This pattern sucks for a few reasons:
  * It is nonobvious.
  * It is error-prone: decrementing 0 can be a bad choice indeed.
  * It really wants to have a function.

It can also introduce bugs if the system time jumps backwards, or if
MaxCircuitDirtiness is increased.

So in this patch, I add an unusable_for_new_conns flag to
origin_circuit_t, make it get checked everywhere it should (I looked
for things that tested timestamp_dirty), and add a new function to
frob it.

For now, the new function does still frob timestamp_dirty (after
checking for underflow and whatnot), in case I missed any cases that
should be checking unusable_for_new_conns.

Fixes bug 6174. We first used this pattern in 516ef41ac1,
which I think was in 0.0.2pre26 (but it could have been 0.0.2pre27).
2013-02-19 18:29:17 -05:00
changes Stop frobbing timestamp_dirty as our sole means to mark circuits unusable 2013-02-19 18:29:17 -05:00
contrib bump to 0.2.4.10-alpha-dev 2013-02-04 18:20:13 -05:00
doc Document (on man page) which DNS record types Tor knows. 2013-02-19 02:47:44 -05:00
m4 Use a nicely written autoconf macro to determine the sign of a type 2013-02-07 16:23:48 -05:00
src Stop frobbing timestamp_dirty as our sole means to mark circuits unusable 2013-02-19 18:29:17 -05:00
.gitignore Add a new automake dropping ("test-driver") to .gitignore 2013-01-16 01:56:35 -05:00
acinclude.m4 Update the copyright date to 201. 2013-01-16 01:54:56 -05:00
autogen.sh Use a nicely written autoconf macro to determine the sign of a type 2013-02-07 16:23:48 -05:00
ChangeLog revise history 2013-02-05 00:48:24 -05:00
configure.ac Have autoconf check whether enums are signed. 2013-02-07 16:30:32 -05:00
Doxyfile.in Fix up all doxygen warnings other than "foo is not documented" 2011-03-16 14:47:27 -04:00
INSTALL Small fixes for the 2702 implementation 2011-04-02 12:15:08 +02:00
LICENSE Update the copyright date to 201. 2013-01-16 01:54:56 -05:00
Makefile.am Use a nicely written autoconf macro to determine the sign of a type 2013-02-07 16:23:48 -05:00
Makefile.nmake Add clean target and test subdir to makefile.nmake 2013-01-16 22:29:38 -05:00
README we have two faqs for now 2010-02-22 00:41:48 -05:00
ReleaseNotes forward-port the 0.2.3.25 changelog and release notes 2012-11-20 03:46:56 -05:00

README 

Tor protects your privacy on the internet by hiding the connection
between your Internet address and the services you use. We believe Tor
is reasonably secure, but please ensure you read the instructions and
configure it properly.

To build Tor from source:
        ./configure && make && make install

Home page:
        https://www.torproject.org/

Download new versions:
        https://www.torproject.org/download.html

Documentation, including links to installation and setup instructions:
        https://www.torproject.org/documentation.html

Making applications work with Tor:
        https://wiki.torproject.org/noreply/TheOnionRouter/TorifyHOWTO

Frequently Asked Questions:
        https://www.torproject.org/faq.html
        https://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ