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path: root/src/core/or/circuitlist.h
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2020-01-08It's 2020. Update the copyright dates with "make update-copyright"Nick Mathewson
2019-10-30circ: Add an handle to circuit_tDavid Goulet
Closes #32343 Signed-off-by: David Goulet <dgoulet@torproject.org>
2019-05-27Make sure that we send at least some random data in RELAY_DATA cellsNick Mathewson
Proposal 289 prevents SENDME-flooding by requiring the other side to authenticate the data it has received. But this data won't actually be random if they are downloading a known resource. "No problem", we said, "let's fell the empty parts of our cells with some randomness!" and we did that in #26871. Unfortunately, if the relay data payloads are all completely full, there won't be any empty parts for us to randomize. Therefore, we now pick random "randomness windows" between CIRCWINDOW_INCREMENT/2 and CIRCWINDOW_INCREMENT. We remember whether we have sent a cell containing at least 16 bytes of randomness in that window. If we haven't, then when the window is exhausted, we send one. (This window approach is designed to lower the number of rng checks we have to do. The number 16 is pulled out of a hat to change the attacker's guessing difficulty to "impossible".) Implements 28646.
2019-05-15Bug 28780: Add purpose for keeping padding circuits openMike Perry
2019-05-03Hiding crypt_path_t: Move assert functions in crypt_path.c.George Kadianakis
This commit only moves code, and makes one function public.
2019-01-16Bump copyright date to 2019Nick Mathewson
2018-12-20Add origin circuit event pubsub systemTaylor Yu
Add a publish-subscribe subsystem to publish messages about changes to origin circuits. Functions in circuitbuild.c and circuitlist.c publish messages to this subsystem. Move circuit event constants out of control.h so that subscribers don't have to include all of control.h to take actions based on messages they receive. Part of ticket 27167.
2018-10-18hs-v3: Close client intro circuits if the descriptor is replacedDavid Goulet
When storing a descriptor in the client cache, if we are about to replace an existing descriptor, make sure to close every introduction circuits of the old descriptor so we don't have leftovers lying around. Ticket 27471 describes a situation where tor is sending an INTRODUCE1 cell on an introduction circuit for which it doesn't have a matching intro point object (taken from the descriptor). The main theory is that, after a new descriptor showed up, the introduction points changed which led to selecting an introduction circuit not used by the service anymore thus for which we are unable to find the corresponding introduction point within the descriptor we just fetched. Closes #27471. Signed-off-by: David Goulet <dgoulet@torproject.org>
2018-09-18Merge branch 'bug23512-v4-033' into bug23512-v4-masterMike Perry
2018-07-05Fix every include path changed in the previous commit (automated)Nick Mathewson
I am very glad to have written this script.
2018-07-05Move literally everything out of src/orNick Mathewson
This commit won't build yet -- it just puts everything in a slightly more logical place. The reasoning here is that "src/core" will hold the stuff that every (or nearly every) tor instance will need in order to do onion routing. Other features (including some necessary ones) will live in "src/feature". The "src/app" directory will hold the stuff needed to have Tor be an application you can actually run. This commit DOES NOT refactor the former contents of src/or into a logical set of acyclic libraries, or change any code at all. That will have to come in the future. We will continue to move things around and split them in the future, but I hope this lays a reasonable groundwork for doing so.
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