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151 Commits

Author SHA1 Message Date
Nick Mathewson
1d002a25a2 Finish up the 0.2.1 version of the bug 957 fix. 
Basically, all this means is downgrading our warning messages to debug
messages, since the bug workaround code here is adequate to stop the
bug.
 2009-05-22 11:47:09 -04:00
Nick Mathewson
34030a3d23 Possible fix for crash bug related to event timeouts. [Bug 957] 
If we ever add an event, then set it, then add it again, there will be
now two pointers to the event in the event base.  If we delete one and
free it, the first pointer will still be there, and possibly cause a
crash later.

This patch adds detection for this case to the code paths in
eventdns.c, and works around it.  If the warning message ever
displays, then a cleverer fix is in order.

{I am not too confident that this *is* the fix, since bug 957 is very
tricky.  If it is, it is a bugfix on 0.2.0.}
 2009-05-18 16:12:39 -04:00
Nick Mathewson
27c3b43817 Fix one case of bug 929. 
svn:r18683
 2009-02-23 20:04:51 +00:00
Nick Mathewson
c7f3416a9e Add some debugging code to try to catch the likely cause of bug 929 
svn:r18682
 2009-02-23 18:57:21 +00:00
Nick Mathewson
65dc835773 Revert an erroneous part of the non-fix to bug 326, and add comments to explain why it was erroneous. 
svn:r18494
 2009-02-11 17:23:11 +00:00
Nick Mathewson
6e4afe6f13 I worry that the CLEAR() macro in eventdns.c is hiding bugs. That is sad, because it was meant to make them more detectable. Change it to change stuff to garbage rather than to 0. If no bugs turn up, we can remove it in 0.2.2.x 
svn:r18493
 2009-02-11 17:22:34 +00:00
Nick Mathewson
8d9aadf57c Port some mostly cosmetic eventdns changes from libevent 
svn:r18492
 2009-02-11 17:22:29 +00:00
Nick Mathewson
fe987d3a17 Remove some deadcode and use tor_inet_aton uniformly. 
svn:r18422
 2009-02-09 03:13:05 +00:00
Nick Mathewson
2ebdf91a52 Fix a remote-crash bug. This will need a patch release. 
svn:r18421
 2009-02-09 03:13:02 +00:00
Nick Mathewson
f78793879d Fix a race condition on nameserver reconfiguration. 
This resolves bug 526, wherein we would crash if the following
events occurred in this order:
  A: We're an OR, and one of our nameservers goes down.
  B: We launch a probe to it to see if it's up again. (We do this hourly
     in steady-state.)
  C: Before the probe finishes, we reconfigure our nameservers,
     usually because we got a SIGHUP and the resolve.conf file changed.
  D: The probe reply comes back, or times out. (There is a five-second
     window for this, after B has happens).

IOW, if one of our nameservers is down and our nameserver
configuration has changed, there were 5 seconds per hour where HUPing
the server was unsafe.

Bugfix on 0.1.2.1-alpha.  Too obscure to backport.

svn:r18306
 2009-01-28 18:26:20 +00:00
Nick Mathewson
2aaf71826d Fix a compile warning on win32. 
svn:r18099
 2009-01-14 04:03:24 +00:00
Nick Mathewson
462f64b6b9 Make outgoing DNS requests respect OutboundBindAddress. 
Fixes the bug part of bug 789.

svn:r17983
 2009-01-06 20:50:55 +00:00
Nick Mathewson
c4b8fef362 Remove svn $Id$s from our source, and remove tor --version --version. 
The subversion $Id$ fields made every commit force a rebuild of
whatever file got committed.  They were not actually useful for
telling the version of Tor files in the wild.

svn:r17867
 2009-01-04 00:35:51 +00:00
Nick Mathewson
9c20441bcb Only set sin_len/sin6_len when they exist. 
svn:r17851
 2009-01-02 20:57:10 +00:00
Nick Mathewson
48f2ce298b Try harder to make sure we zero-out the extraneous sockaddr fields and that we set sockaddr_len. Conceivably a backport candidate, though nothing has yet been sen to break. 
svn:r17849
 2009-01-02 20:39:38 +00:00
Nick Mathewson
ffe22fab9b Indeed, arma was right. There was one ntohl too many in debug_ntop in eventdns.c 
svn:r17826
 2008-12-30 04:08:45 +00:00
Roger Dingledine
c190842a34 point out the bug location to nick. unless i'm wrong. 
svn:r17825
 2008-12-30 02:36:11 +00:00
Nick Mathewson
2c4097e99d More compilation tweaks on Android: fix two clear errors in our code that apparently the compiler cares about there. 
svn:r17808
 2008-12-29 04:01:58 +00:00
Nick Mathewson
029be5ad02 Move in-addr.arpa parsing and generation into address.c, and simplify the code that does it elsewhere. Incidentally, this lets exit servers answer requests for ip6.arpa addresses. 
svn:r17707
 2008-12-19 18:52:00 +00:00
Nick Mathewson
148e4e8837 Do not leak the DNS server port structure. 
svn:r17680
 2008-12-18 15:00:18 +00:00
Nick Mathewson
6693f32530 Resolve many DOCDOCs. 
svn:r17662
 2008-12-17 22:58:20 +00:00
Nick Mathewson
d8027aa689 Fix a logic error that would automatically reject all but the first configured DNS server. Bugfix on 0.2.1.5-alpha. Possible fix for part of 813/868. Spotted by coderman 
svn:r17569
 2008-12-10 22:57:41 +00:00
Nick Mathewson
c7910c3bc9 Consider GetNetworkParams() nameserver parsing to have suceeded if even one nameserver can be added. Log more useful info about what exactly is failing when we fail to add a nameserver. 
svn:r17368
 2008-11-22 21:46:34 +00:00
Nick Mathewson
0c9dfffe5a Implement the 0x20-hack to make DNS poisoning harder against us, especially when resolving large names. Add a cfg option to disable it, since apparently 3/10 of a percent of servers get it wrong. 
svn:r17171
 2008-10-29 19:20:02 +00:00
Roger Dingledine
bb1f488dbe fix typo in log entry 
svn:r17050
 2008-10-08 10:47:23 +00:00
Nick Mathewson
b0c48d8e45 Oops; we need to make sure that DNS request names are matched in the _questions_ section of the replies. Rejecting answers whether the _answers_ section did not match made us reject A records waiting at the end of a CNAME record. Bug 823. 
svn:r16933
 2008-09-22 20:06:25 +00:00
Nick Mathewson
c33dde4ac1 Fix mingw build with --enable-gcc-warnings set. 
svn:r16759
 2008-09-04 21:58:09 +00:00
Nick Mathewson
6bf1dec945 Oops; set address families on nameservers. 
svn:r16674
 2008-08-27 14:12:10 +00:00
Nick Mathewson
239cbe99ba Oops. Linux has no sa_len field. 
svn:r16627
 2008-08-22 18:00:26 +00:00
Nick Mathewson
fc52d85b7c r17846@tombo: nickm | 2008-08-22 11:54:00 -0400 
Make dns resolver code more robust: handle nameservers with IPv6 addresses, make sure names in replies match requested names, make sure origin address of reply matches the address we asked.


svn:r16621
 2008-08-22 16:24:43 +00:00
Nick Mathewson
e0de72dd87 r14410@tombo: nickm | 2008-02-23 16:51:46 -0500 
Fix the last of the -Wshorten-64-to-32 warnings.


svn:r13696
 2008-02-24 22:10:08 +00:00
Nick Mathewson
daefbfe691 r14371@tombo: nickm | 2008-02-21 16:13:18 -0500 
Fix all -Wshorten-64-to-32 warnings that appear on my macbook.


svn:r13662
 2008-02-21 21:15:31 +00:00
Nick Mathewson
5dd9d16b94 r18263@catbus: nickm | 2008-02-20 12:45:15 -0500 
Oops. not supposed to use tor_assert() in eventdns.c


svn:r13622
 2008-02-20 17:48:37 +00:00
Nick Mathewson
dc949b846a r18259@catbus: nickm | 2008-02-20 12:03:15 -0500 
Make the last of the veracode warning issues get fixed.


svn:r13620
 2008-02-20 17:03:16 +00:00
Nick Mathewson
418c2e1b6b r14181@tombo: nickm | 2008-02-15 16:48:17 -0500 
Fix all but 2 DOCDOC items; defer many XXX020s (particularly those where fixing them would fix no bugs at the risk of introducing some bugs).


svn:r13529
 2008-02-15 23:39:04 +00:00
Nick Mathewson
729555e1ca r17967@catbus: nickm | 2008-02-07 11:44:51 -0500 
Fix some warnings identified by building with -D_FORTIFY_SOURCE=2.  Remove a redundant (and nuts) definition of _FORTIFY_SOURCE from eventdns.c.


svn:r13424
 2008-02-08 21:09:29 +00:00
Nick Mathewson
92aaf68d19 r17914@catbus: nickm | 2008-02-05 16:12:16 -0500 
Remove or downgrade some XXX020 items.


svn:r13388
 2008-02-05 21:39:44 +00:00
Nick Mathewson
24aae484c9 r17624@catbus: nickm | 2008-01-15 00:42:01 -0500 
Fixes to more anonymously-reported typos and logic errors.


svn:r13136
 2008-01-15 05:57:19 +00:00
Nick Mathewson
3b8f76aa51 r17611@catbus: nickm | 2008-01-14 13:44:16 -0500 
add some missing checks for failing return values.


svn:r13130
 2008-01-14 19:00:23 +00:00
Nick Mathewson
5e81b0ecb8 r15170@catbus: nickm | 2007-09-19 11:41:50 -0400 
Carry a new evdns function over from libevent: do not rely on compile-time code to set the transaction ID correctly.  This will be important when we finally drop our internal copy of eventdns.c


svn:r11517
 2007-09-19 15:53:36 +00:00
Nick Mathewson
c0130f9611 r15022@catbus: nickm | 2007-09-10 10:31:54 -0400 
remove yet more pointless differences between our eventdns.c and the evdns.c in libevent.


svn:r11425
 2007-09-11 20:17:18 +00:00
Nick Mathewson
5828e4d5c4 r15020@catbus: nickm | 2007-09-10 10:22:31 -0400 
remove more pointless differences between our eventdns.c and the evdns.c in libevent.


svn:r11416
 2007-09-10 14:23:26 +00:00
Nick Mathewson
13b65c4129 r15018@catbus: nickm | 2007-09-10 10:04:16 -0400 
Change comments in eventdns.c to C-style, so we can more easily diff it against the version in libevent to reconcile them (again).


svn:r11415
 2007-09-10 14:05:12 +00:00
Nick Mathewson
615d19fe4c r15001@catbus: nickm | 2007-09-10 09:44:49 -0400 
Fix a couple of memory leaks in eventdns.c; found by niels.  Not backport candidates, since they only affect DNSPort users.


svn:r11413
 2007-09-10 13:48:01 +00:00
Nick Mathewson
1f244d3943 r14639@catbus: nickm | 2007-08-17 17:45:28 -0400 
Compile without warnings on MinGW, even with --enable-gcc-warnings enabled.


svn:r11157
 2007-08-17 21:46:34 +00:00
Nick Mathewson
3fc04529d4 r14093@catbus: nickm | 2007-08-08 01:49:54 -0400 
Include fewer redundant headers; use the compiler search paths better.


svn:r11060
 2007-08-08 05:50:31 +00:00
Nick Mathewson
2305c2c7be r13903@catbus: nickm | 2007-07-25 18:03:56 -0400 
Make buffer large enough to hold ip6.arpa addresses.  This code was not actually used yet, so no user-visible bug existed. (Based on patch by croup.)


svn:r10928
 2007-07-25 22:56:47 +00:00
Nick Mathewson
1b24067395 r13773@kushana: nickm | 2007-07-23 00:16:44 -0400 
Use tor malloc replacements in eventdns.c for now: there might be goblins there...goblins that only dmalloc can find!


svn:r10912
 2007-07-23 04:18:20 +00:00
Nick Mathewson
a1f4644a94 r13840@catbus: nickm | 2007-07-19 16:00:43 -0400 
Apparently, this problem can occur on the whole BSD family. "Yay."


svn:r10884
 2007-07-19 20:00:45 +00:00
Nick Mathewson
99792df645 r13473@catbus: nickm | 2007-06-17 13:42:36 -0400 
Fix solaris eventdns.c behavior.  This time, I think I got it.  We were redefining _FILE_OFFSET_BITS, and thereby calling fstat64() on a struct stat, or something like that.


svn:r10643
 2007-06-17 17:43:25 +00:00