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136 Commits

Author SHA1 Message Date
Nick Mathewson
496e414e52 Basic RAM poisoning and magic-checking to notice connection and circuit 
corruption faster; also, check for corruption in dns.c so we can fail fast
for the bug that's nailing Lucky and moria3.


svn:r1123
 2004-02-25 07:31:46 +00:00
Roger Dingledine
3456adec31 adding the reattach-after-timeout feature wasn't so easy after all. 
maybe it works now.


svn:r1101
 2004-02-18 01:21:20 +00:00
Nick Mathewson
bd14023afd Propagate yes/no/maybe a little farther forward. 
svn:r1096
 2004-02-17 08:29:22 +00:00
Roger Dingledine
afdaff63ef turn some knobs, add more debugging 
svn:r1023
 2004-01-30 19:31:39 +00:00
Roger Dingledine
3516ae1a26 add an ap_conn connecting state; report connecting delay 
svn:r1011
 2004-01-20 09:21:46 +00:00
Roger Dingledine
53061b3778 fix endian issue: rh.integrity was getting sent wrong 
now it's a char[4] rather than an int


svn:r966
 2004-01-02 09:03:38 +00:00
Roger Dingledine
8085235e5f make loglevel info less noisy 
svn:r961
 2003-12-30 22:49:35 +00:00
Roger Dingledine
f3fdbadfdf randomize the initial circ_id and stream_id, so an adversary who 
breaks in part-way through can't learn how many circs/streams have
been made


svn:r960
 2003-12-28 04:46:09 +00:00
Roger Dingledine
71739b486a back out the insert-padding-if-conflict code 
use recognized + digest instead, just assume it's enough bits


svn:r959
 2003-12-26 06:29:57 +00:00
Roger Dingledine
43fcb70bad checkpoint: revamp relay cell packaging and handling 
include the infrastructure for inserting padding cells when there's
a relay-recognized conflict, but it does not work currently.


svn:r958
 2003-12-23 07:45:31 +00:00
Roger Dingledine
a5e6ec244f rename circ_id_t to uint16_t for code clarity 
change message when using non-recommended tor version


svn:r954
 2003-12-19 19:55:02 +00:00
Roger Dingledine
45a66c6955 make a relay_header_t struct and pack/unpack funcs 
split 7-byte stream_id string into 2-byte recognized and 2-byte stream_id
fix two seg faults in fetch_from_buf_http
fix several lurking seg faults in handling unexpected relay cells

still need to
 * clean up relay_crypt
 * use relay dummies if there's going to be a conflict with rh.recognized
 * check for a conflict when generating stream_ids


svn:r953
 2003-12-19 05:09:51 +00:00
Roger Dingledine
6a19e64066 remove trailing whitespace 
svn:r951
 2003-12-17 21:09:31 +00:00
Roger Dingledine
5ecd6b6bad make fetch_from_buf_http malloc its strings rather 
than use fixed-size strings

reorganize directory_handle_command so it'll be easier to do more with
our directory servers


svn:r950
 2003-12-17 09:42:28 +00:00
Roger Dingledine
aba237e3e2 end-to-end integrity checking now works 
initialize digests from shared secrets at handshake
make circuit_send_next_onion_skin use connection_edge_send_command


svn:r948
 2003-12-17 05:58:30 +00:00
Roger Dingledine
21cc01299b infrastructure for integrity-checks in relay cells 
make circuit_consider_sending_sendme use connection_edge_send_command
fix endian bug in relay length handling (maybe)


svn:r946
 2003-12-16 22:56:50 +00:00
Roger Dingledine
4e50f79b11 resolve an edge case in get_unique_circ_id_by_conn 
svn:r944
 2003-12-16 20:45:10 +00:00
Roger Dingledine
8712a30e91 move cell size to 512 bytes 
move length to 2 bytes, put it in the relay header
remove 4 reserved bytes in cell
add 4 bytes to relay header for the integrity check


svn:r942
 2003-12-16 09:48:17 +00:00
Roger Dingledine
961ecf7abf add H(K|1) to the onionskin reply 
verify it at the client end
abstract the onionskin handshake lengths

breaks backward compatibility (again)


svn:r941
 2003-12-16 08:21:58 +00:00
Nick Mathewson
4885e90490 Make compile warning-free on cygwin 
svn:r936
 2003-12-15 21:35:52 +00:00
Roger Dingledine
08534a6271 start tracking the 'It appears I've already sent the end' warning 
svn:r932
 2003-12-14 08:32:14 +00:00
Roger Dingledine
05c05d6444 more friendly warning when there are too many dns workers 
svn:r919
 2003-12-14 04:19:12 +00:00
Roger Dingledine
7a3a3ae1df bugfix: a circuit that immediately failed still counts as a failed circuit 
svn:r905
 2003-12-13 07:42:18 +00:00
Roger Dingledine
9c66e2bf9a if >=2 circs are being built that handle a given stream, 
no need to have new circs handle it too.


svn:r896
 2003-12-12 23:03:25 +00:00
Roger Dingledine
38ce03d0e7 close the circuit when we get a truncated cell 
svn:r893
 2003-12-09 02:06:58 +00:00
Roger Dingledine
d172fdd300 fix vicious bug in connection_ap_attach_pending that caused it to 
never work.
fix vicious bug in choose_good_exit_server that caused it to *skip over*
  pending circuits, and look only at *non-pending circuits*, when choosing
  a good exit node for the new circuit.
bugfix: remove incorrect asserts in circuit_get_newest()


svn:r876
 2003-12-03 09:50:02 +00:00
Roger Dingledine
975bb68010 simplify: options.OnionRouter==1 iff options.ORPort>0 
svn:r857
 2003-11-20 17:49:45 +00:00
Roger Dingledine
f5994416c4 bugfix and cleanups 
svn:r848
 2003-11-19 13:12:43 +00:00
Nick Mathewson
fd07872a72 Separate failure-count tracking from circuit-launching. 
Increment failure counts only when circuits close without having been built.
Reset failure counts only on the second, and when circuits are done building.


svn:r847
 2003-11-19 02:22:52 +00:00
Roger Dingledine
25ac8857f3 bugfix: sometimes we closed a circ while cpuworker was cranking, 
and it didn't notice


svn:r841
 2003-11-18 21:12:17 +00:00
Roger Dingledine
f0cccc567e bugfix: don't ask for ->next of an expired circuit 
bugfix: keep going when a circ fails in circuit_n_conn_open
        (make circuit_enumerate_by_naddr_nport obsolete)
bugfix: make circuit_n_conn_open only look at circ's that start at us
bugfix: only try circuit_n_conn_open if we're an OP. Otherwise we
        expect connections to always already be up.
bugfix: when choosing path length, pay attention to whether the directory
        says a router is down.
bugfix: when picking good exit, skip routers which are known to be down
        (more work needs to be done on this one)


svn:r838
 2003-11-18 09:53:03 +00:00
Roger Dingledine
ac56486bf6 use the tor_malloc_zero wrapper 
svn:r837
 2003-11-18 08:20:19 +00:00
Roger Dingledine
a3e39b0ceb don't build too many circs at once 
expire circs that have been building for too long


svn:r835
 2003-11-18 07:48:00 +00:00
Nick Mathewson
4eabb8450e Fix possible bug in circID selection when building circuits on combination OP/OR servers 
svn:r830
 2003-11-17 18:40:56 +00:00
Roger Dingledine
7a702d64d4 more verbose info for circuits when kill -USR1 
svn:r829
 2003-11-17 09:30:29 +00:00
Roger Dingledine
a18ced652b finally find and possibly fix the circuit_deliver_relay_cell warn bug 
svn:r827
 2003-11-17 07:43:03 +00:00
Roger Dingledine
42b5ed754f catch the last missing log line i hope 
svn:r825
 2003-11-17 07:29:43 +00:00
Nick Mathewson
90e143e6d4 Remove a possible source of error in circID picking. 
svn:r824
 2003-11-17 07:24:01 +00:00
Roger Dingledine
e5d6e7db1a continue the circuit_deliver_relay_cell forward-failure bughunt 
svn:r823
 2003-11-17 07:20:51 +00:00
Roger Dingledine
851b0933f5 trivial bugfixes 
svn:r821
 2003-11-17 01:23:15 +00:00
Roger Dingledine
4aede010b9 recognize in-progress circs and don't start redundant ones 
quickly notice streams that don't have a circ on the way, and start one


svn:r819
 2003-11-17 00:57:56 +00:00
Roger Dingledine
6d0e611fde change when circuits are built and expired 
not quite happy with it yet


svn:r817
 2003-11-16 21:49:52 +00:00
Roger Dingledine
f5089681f7 bugfix: if you recognize a relay cell, don't also pass it on. 
svn:r816
 2003-11-16 17:31:19 +00:00
Roger Dingledine
fe856406be initial patches on patches 
svn:r814
 2003-11-16 17:00:02 +00:00
Nick Mathewson
a8eaa79e03 Improved exit policy syntax; basic client-side DNS caching. 
- Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and bitcounts
  18.0.0.0/8.  Policies are parsed on startup, not when comparing to them.

- desired_path_len is now part of an opaque cpath_build_state_t structure.

- END_REASON_EXITPOLICY cells no longer include a port.

- RELAY_COMMAND_CONNECTED cells now include the IP address we've connected
  to.

- connection_edge now has a client_dns cache to remember resolved addresses.
  It gets populated by RELAY_COMMAND_CONNECTED cells and END_REASON_EXITPOLICY
  cells.  It gets used by connection_ap_handshake_send_begin.  We don't
  compare it to exit policies yet.


svn:r812
 2003-11-14 20:45:47 +00:00
Roger Dingledine
273da1d3c4 commencing the bughunt 
svn:r811
 2003-11-14 07:15:52 +00:00
Roger Dingledine
f5829aa723 lay groundwork for EntryNodes and ExitNodes 
svn:r805
 2003-11-12 19:34:34 +00:00
Nick Mathewson
99a6d48f62 Restore erroneously removed assert 
svn:r796
 2003-11-12 03:48:33 +00:00
Nick Mathewson
e0ad4d08be Fix thinko: Failure and success are different things. 
svn:r795
 2003-11-12 03:01:38 +00:00
Nick Mathewson
2e05b9ccf9 Remove dead code 
svn:r794
 2003-11-12 02:58:45 +00:00