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author | David Goulet <dgoulet@torproject.org> | 2019-04-24 11:57:20 -0400 |
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committer | David Goulet <dgoulet@torproject.org> | 2019-04-29 12:17:57 -0400 |
commit | 805c81efed9bc2c474d3f10675846ee445a908d5 (patch) | |
tree | 68386fd897a1dd2fc05e86eb7cf97de4feb646f0 /src/core/or/sendme.c | |
parent | 7c8e519b3452ce3eb3d3c854d80be5b7e49164b4 (diff) | |
download | tor-805c81efed9bc2c474d3f10675846ee445a908d5.tar.gz tor-805c81efed9bc2c474d3f10675846ee445a908d5.zip |
sendme: Add helper to note the cell digest
Signed-off-by: David Goulet <dgoulet@torproject.org>
Diffstat (limited to 'src/core/or/sendme.c')
-rw-r--r-- | src/core/or/sendme.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/core/or/sendme.c b/src/core/or/sendme.c index c66e947bc4..b384a19164 100644 --- a/src/core/or/sendme.c +++ b/src/core/or/sendme.c @@ -286,10 +286,37 @@ send_circuit_level_sendme(circuit_t *circ, crypt_path_t *layer_hint, return 0; } +/* Put the crypto.b_digest in the sendme_digest. */ +static void +note_cell_digest(const relay_crypto_t *crypto) +{ + tor_assert(crypto); + crypto_digest_get_digest(crypto->b_digest, (char *) crypto->sendme_digest, + sizeof(crypto->sendme_digest)); +} + /* * Public API */ +/** Keep the current inbound cell digest for the next SENDME digest. This part + * is only done by the client as the circuit came back from the Exit. */ +void +sendme_circuit_note_outbound_cell(or_circuit_t *or_circ) +{ + tor_assert(or_circ); + note_cell_digest(&or_circ->crypto); +} + +/** Keep the current inbound cell digest for the next SENDME digest. This part + * is only done by the client as the circuit came back from the Exit. */ +void +sendme_circuit_note_inbound_cell(crypt_path_t *cpath) +{ + tor_assert(cpath); + note_cell_digest(&cpath->crypto); +} + /** Return true iff the next cell for the given cell window is expected to be * a SENDME. * |