Commit Graph

907 Commits

Author SHA1 Message Date
Nick Mathewson
09c25697d7 Add a function to simplify a fraction.
Apparently remembering euclid's algorithm does pay off sooner or later.
2016-07-26 11:23:34 -04:00
Nick Mathewson
fb7f90c181 Tweaks on 19435 fix:
* Raise limit: 16k isn't all that high.
   * Don't log when limit exceded; log later on.
   * Say "over" when we log more than we say we log.
   * Add target version to changes file
2016-07-26 09:59:48 -04:00
Ivan Markin
77459b97aa Fix integer overflow in the rate-limiter (#19435). 2016-07-26 09:49:40 -04:00
Nick Mathewson
1135405c8c Fix a variable-shadowing bug in check_private_dir
We introduded a shadowed variable, thereby causing a log message to
be wrong. Fixes 19578. I believe the bug was introduced by
54d7d31cba in 0.2.2.29-beta.
2016-07-05 13:43:58 -04:00
Nick Mathewson
aaa3129043 Merge remote-tracking branch 'dgoulet/ticket16943_029_05-squashed'
Trivial Conflicts:
	src/or/or.h
	src/or/routerparse.c
2016-07-01 15:29:05 -04:00
Nick Mathewson
c6846d7bf0 Merge remote-tracking branch 'andrea/bug18322_v3_squashed' 2016-06-30 11:18:00 -04:00
Andrea Shepard
f99c9df02b Make things mockable for dump_desc_populate_fifo_from_directory() unit test 2016-06-30 07:03:26 +00:00
Andrea Shepard
42f089473a Unit test for dump_desc_populate_one_file() 2016-06-30 07:03:26 +00:00
Andrea Shepard
38cced90ef Move unparseable descriptor dumps into subdirectory of DataDir 2016-06-30 07:03:25 +00:00
Andrea Shepard
17ed2fed68 Expose dump_desc() to the test suite and make things it calls mockable 2016-06-30 07:03:24 +00:00
teor (Tim Wilson-Brown)
aae14f8346
Fix bug19483: avoid range checks when they are always true
Some compilers are smart enough to work out that comparisons to
LONG_MAX are a no-op on L64.
2016-06-30 09:29:14 +10:00
teor (Tim Wilson-Brown)
4234ca3bf2
Improve overflow checks in tv_udiff and tv_mdiff
Validate that tv_usec inputs to tv_udiff and tv_mdiff are in range.

Do internal calculations in tv_udiff and tv_mdiff in 64-bit,
which makes the function less prone to integer overflow,
particularly on platforms where long and time_t are 32-bit,
but tv_sec is 64-bit, like some BSD configurations.

Check every addition and subtraction that could overflow.
2016-06-29 17:23:24 +10:00
teor (Tim Wilson-Brown)
2e51608a8b
Fix an integer overflow bug in the tv_mdiff range check
The temporary second used for rounding can cause overflow,
depending on the order the compiler performs the operations.
2016-06-29 12:53:50 +10:00
David Goulet
9744a40f7a Add tor_htonll/ntohll functions
Signed-off-by: David Goulet <dgoulet@ev0ke.net>
2016-06-20 15:26:58 -04:00
Nick Mathewson
1160ac1283 Changes file for 19063; use the BUG macro 2016-06-19 12:38:15 -04:00
U+039b
58e6a6aaeb Fix #19063: Add check in utility macro 2016-06-19 12:34:49 -04:00
cypherpunks
94762e37b9 Use the Autoconf macro AC_USE_SYSTEM_EXTENSIONS
The Autoconf macro AC_USE_SYSTEM_EXTENSIONS defines preprocessor macros
which turn on extensions to C and POSIX. The macro also makes it easier
for developers to use the extensions without needing (or forgetting) to
define them manually.

The macro can be safely used because it was introduced in Autoconf 2.60
and Tor requires Autoconf 2.63 and above.
2016-06-17 10:17:44 -04:00
Nick Mathewson
a8c766220f Mark an abort() as unreachable. 2016-06-16 15:53:05 -04:00
Nick Mathewson
128ab31c64 Mark code unreachable in unescape_string()
Also, add tests for it in case someday it does become reachable.
2016-06-16 15:36:08 -04:00
Nick Mathewson
5c596cdbc0 Tests for message rate-limiting
Also note a bug in the rate-limiting message.
2016-06-16 11:54:50 -04:00
Nick Mathewson
9b0bd65f22 I believe I found some dead code in our time parsing functions 2016-06-16 11:14:12 -04:00
Nick Mathewson
79370914d1 tests for size_mul_check__()
it's important, and we should make sure we got it right.
2016-06-16 10:43:01 -04:00
Nick Mathewson
41cb26c169 Correct the rounding behavior on tv_mdiff.
Fix for bug 19428.
2016-06-16 10:16:04 -04:00
Nick Mathewson
d1ab295d7b add LCOV_EXCL for unreachable exit() blocks in src/common 2016-06-16 09:50:52 -04:00
Nick Mathewson
7b54d7ebbd Mark src/common tor_assert(0)/tor_fragile_assert() unreached for coverage
I audited this to make sure I was only marking ones that really
should be unreachable.
2016-06-15 17:28:26 -04:00
Nick Mathewson
493499a339 Add -Wfloat-conversion for GCC >= 4.9
This caught quite a few minor issues in our unit tests and elsewhere
in our code.
2016-06-11 10:11:52 -04:00
Nick Mathewson
ce1dbbc4fd Enable the -Waggregate-return warning
Suppress it in the one spot in the code where we actually do want to
allow an aggregate return in order to call the mallinfo() API.
2016-05-27 11:26:14 -04:00
Nick Mathewson
f2205071f0 Remove round_int64_to_next_multiple_of: It is now unused. 2016-05-19 21:21:24 -04:00
Nick Mathewson
7bc9d1e002 Merge branch 'maint-0.2.8' 2016-05-12 15:33:56 -04:00
Nick Mathewson
e8cc9f3edf Merge branch 'maint-0.2.7' into maint-0.2.8 2016-05-12 15:33:47 -04:00
Nick Mathewson
4165b1a0da Merge branch 'bug18977_026_v2' into maint-0.2.7 2016-05-12 15:33:35 -04:00
Nick Mathewson
44cbd00dfa Fix a compiler warning on windows when sizeof(long)==sizeof(int) 2016-05-12 14:51:38 -04:00
Nick Mathewson
20b01cece8 Merge branch 'bug18977_024_v2' into bug18977_026_v2
Had conflicts related to other correct_tm bugs in 0.2.6.  Added wday
for another case.
2016-05-12 14:39:06 -04:00
Nick Mathewson
e57f26c135 Have correct_tm set tm_wday as well.
The tm_wday field had been left uninitialized, which was causing
some assertions to fail on Windows unit tests.

Fixes bug 18977.
2016-05-12 14:37:27 -04:00
Nick Mathewson
6bc052365a Use a much less clever scan_signed no-overflow hack 2016-05-12 14:33:26 -04:00
Nick Mathewson
2384256a37 Merge branch 'maint-0.2.8' 2016-05-04 15:12:20 -04:00
Nick Mathewson
b8e8910d60 Merge branch 'bug18686_025' into maint-0.2.8 2016-05-04 15:12:11 -04:00
Nick Mathewson
c7b9e0b8ed Report success when not terminating an already terminated process.
Also, document the actual behavior and return values of
tor_terminate_process.

Fixes bug18686; bugfix on 0.2.3.9-alpha.
2016-05-04 15:10:36 -04:00
Nick Mathewson
7865402106 Move tor_assert implementation into its own header/module. 2016-04-04 11:06:04 -04:00
Nick Mathewson
4bb44f2c15 Only check in-boundsness of seconds when time_t is smaller than i64
Otherwise coverity complains that we're checking an whether an int64 is
less than INT64_MIN, which of course it isn't.

Fixes CID 1357176. Not in any released Tor.
2016-03-25 16:46:02 -04:00
Nick Mathewson
6256c61d95 Merge branch 'timegm_overflow_squashed' 2016-03-24 10:18:00 -04:00
teor (Tim Wilson-Brown)
e71e8e005a Avoid overflow in tor_timegm on 32 bit platforms due to year 2038 2016-03-24 10:17:48 -04:00
Nick Mathewson
a17537a238 Fix an fd leak in check_private_dir().
The fd would leak when the User wasn't recogniezed by
getpwnam(). Since we'd then go on to exit, this wasn't a terribad
leak, but it's still not as nice as no leak at all.

CID 1355640; bugfix on no released Tor.
2016-03-22 08:29:51 -04:00
Nick Mathewson
b48f8a8114 Fix whitespace. 2016-03-15 09:21:29 -04:00
Nick Mathewson
c9899ee640 Merge remote-tracking branch 'weasel/bug18458' 2016-03-15 09:18:24 -04:00
Nick Mathewson
36ad65a7d1 When using open() to make sure we created a dir, close the fd afterwards
Found by coverity. Not in any released Tor. Fixes CID 1355640.

Also, don't check for fd correctness with assert(fd).  You need to
assert (fd >= 0).
2016-03-14 13:03:44 -04:00
Peter Palfrader
1ef7df551d First RelaxDirModeCheck implementation 2016-03-01 17:08:14 +01:00
Nick Mathewson
57699de005 Update the copyright year. 2016-02-27 18:48:19 +01:00
Nick Mathewson
d5cbc21ad1 Fix an unused-variable warning 2016-02-27 10:20:15 +01:00
Nick Mathewson
7255b1121d Fix check_private_dir() to work on Windows again.
On windows, you cannot open() a directory.  So for Windows we should
just take our previous stat-based approach.

Closes bug 18392; bug not in any released Tor.
2016-02-25 13:34:12 -05:00
Andrea Shepard
cda2381789 Appease make check-spaces 2016-02-23 05:07:29 +00:00
Nick Mathewson
5cd6c577df Merge branch 'bug17852_revised' 2016-02-16 11:34:06 -05:00
Jeremy
f48c607fd9 Harden check_private_dir() to remove any potential race.
Remove any potential race between stat() and chmod().
Replace stat() with fstat().
Replace chmod() with fchmod()
2016-02-16 11:21:46 -05:00
Jeremy
4e19133dcc src/common/util.c:expand_filename() - Perhaps use GetFullPathName() as a form of input validation on the filename argument. 2016-02-16 11:21:45 -05:00
cypherpunks
824a6a2a90 Replace usage of INLINE with inline
This patch was generated using;

  sed -i -e "s/\bINLINE\b/inline/" src/*/*.[ch] src/*/*/*.[ch]
2015-12-15 11:34:00 -05:00
Jamie Nguyen
08c7ceb5df Permit filesystem group to be root 2015-12-10 20:00:06 -05:00
Nick Mathewson
7a940fac1c appease check-spaces 2015-11-13 13:46:47 -05:00
Nick Mathewson
d20a3d07e3 Merge branch 'karsten_bug13192_026_03_teor' 2015-11-12 11:40:58 -05:00
Nick Mathewson
1f7ba115a4 Rename cast_double_to_int64 to clamp_double_to_int64 2015-11-12 11:33:48 -05:00
Nick Mathewson
0694263b75 Make round_to_next_multiple_of always round upwards.
Yes, even if it has to return a non-multiple.  This prevents us from
ever having a bug where we try to use it for allocation, and under-allocate.
2015-11-12 11:32:14 -05:00
Nick Mathewson
347fe449fe Move formatting functions around.
The base64 and base32 functions used to be in crypto.c;
crypto_format.h had no header; some general-purpose functions were in
crypto_curve25519.c.

This patch makes a {crypto,util}_format.[ch], and puts more functions
there.  Small modules are beautiful!
2015-07-31 11:21:34 -04:00
Yawning Angel
da6aa7bfa5 Allow a single trailing . when validating FQDNs from SOCKS.
URI syntax (and DNS syntax) allows for a single trailing `.` to
explicitly distinguish between a relative and absolute
(fully-qualified) domain name. While this is redundant in that RFC 1928
DOMAINNAME addresses are *always* fully-qualified, certain clients
blindly pass the trailing `.` along in the request.

Fixes bug 16674; bugfix on 0.2.6.2-alpha.
2015-07-27 12:58:40 +00:00
Nick Mathewson
7521c3ee91 Document the torrc format as thoroughly as possible
Closes ticket 2325
2015-07-20 12:05:44 -04:00
Nick Mathewson
b5cfcb2045 Fix most check-spaces issues 2015-07-16 11:10:14 -04:00
Nick Mathewson
3c28d95ca7 Add more EINVAL errno setting on key read failures
Teor found these.  This is for part of #16582.
2015-07-15 10:35:29 -04:00
Nick Mathewson
b566cb9e84 Make file-reading and key-reading preserve errno
This is an important part of #16582.
2015-07-14 10:18:52 -04:00
Yawning Angel
3f336966a2 Work around nytimes.com's broken hostnames in our SOCKS checks.
RFC 952 is approximately 30 years old, and people are failing to comply,
by serving A records with '_' as part of the hostname.  Since relaxing
the check is a QOL improvement for our userbase, relax the check to
allow such abominations as destinations, especially since there are
likely to be other similarly misconfigured domains out there.
2015-06-24 13:52:29 +00:00
Nick Mathewson
e086db7952 Merge branch 'writing_tests' 2015-05-07 15:29:56 -04:00
Nick Mathewson
79e85313aa Write the outlines of a WritingTests.txt document
Also, add some sample tests to be examples.
2015-05-07 15:29:16 -04:00
David Goulet
8acccdbeac Add an util function to cast double to int64_t
Use it in the sample_laplace_distribution function to make sure we return
the correct converted value after math operations are done on the input
values.

Thanks to Yawning for proposing a solution.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>
2015-05-06 18:05:16 +10:00
Karsten Loesing
dad5eb7e1f Tweak teor's and dgoulet's #13192 patches.
- Rewrite changes file.
 - Avoid float comparison with == and use <= instead.
 - Add teor's tor_llround(trunc(...)) back to silence clang warnings.
 - Replace tt_assert() with tt_i64_op() and friends.
 - Fix whitespace and a comment.
2015-05-06 18:05:16 +10:00
teor
09cac24373 Handle edge cases in the round_*_to_next_multiple_of functions
Consistently check for overflow in round_*_to_next_multiple_of.

Check all round_*_to_next_multiple_of functions with expected values.
Check all round_*_to_next_multiple_of functions with maximal values.

Related to HS stats in #13192.
2015-05-06 18:05:15 +10:00
teor
6d54bdbdcf Handle edge cases in laplace functions
Avoid division by zero.
Avoid taking the log of zero.
Silence clang type conversion warnings using round and trunc.
The existing values returned by the laplace functions do not change.

Add tests for laplace edge cases.
These changes pass the existing unit tests without modification.

Related to HS stats in #13192.
2015-05-06 18:05:15 +10:00
Yawning Angel
38c8e0bfc5 Fix the windows test failure caused by the #15435 changes. 2015-04-02 03:25:51 +00:00
Nick Mathewson
aa7b792250 Merge remote-tracking branch 'yawning/feature15435' 2015-04-01 13:34:14 -04:00
Yawning Angel
fa81508eb2 Use prctl() to have the kernel SIGTERM background processes on exit.
This uses a Linux-ism to attempt to always clean up background processes
if possible.  Note that it is not a catch-all, in that executables with
suid/sgid or elevated capabilities will have the prctl() attribute
stripped as part of the execve().

Resolves ticket 15471.
2015-03-26 14:56:14 +00:00
Yawning Angel
fda61e030e Implement "TOR_PT_EXIT_ON_STDIN_CLOSE".
Background processes spawned by Tor now will have a valid stdin.
Pluggable transports can detect this behavior with the aformentioned
enviornment variable, and exit if stdin ever gets closed.
2015-03-26 12:55:12 +00:00
Yawning Angel
cbd26157c5 Remove tor_strclear(), and replace previous calls with memwipe(). 2015-02-17 18:53:33 +00:00
Arthur Edelstein
cb714d896c Bug #8405: Report SOCKS username/password in CIRC status events
Introduces two new circuit status name-value parameters: SOCKS_USERNAME
and SOCKS_PASSWORD. Values are enclosing in quotes and unusual characters
are escaped.

Example:

    650 CIRC 5 EXTENDED [...] SOCKS_USERNAME="my_username" SOCKS_PASSWORD="my_password"
2015-01-28 12:02:15 -05:00
George Kadianakis
45bc5a0743 Restrict sample values of the Laplace distribution to int64_t.
This helps avoid undefined behavior from casting big double values to
int64_t. Fixes #14090.
2015-01-15 14:43:58 +00:00
Nick Mathewson
2edfdc02a2 Merge remote-tracking branch 'teor/bug13111-empty-key-files-fn-empty' 2015-01-12 14:06:14 -05:00
Nick Mathewson
53ecfba284 Merge remote-tracking branch 'teor/fix-typos' 2015-01-10 16:00:12 -05:00
teor
f8ffb57bc4 Merge branch 'master' of https://git.torproject.org/tor into bug13111-empty-key-files-fn-empty
Conflicts:
  src/or/connection_edge.c
Merged in favour of origin.
2015-01-10 17:20:06 +11:00
teor
c200ab46b8 Merge branch 'bug14001-clang-warning' into bug13111-empty-key-files-fn-empty
Conflicts:
  src/or/router.c
Choose newer comment.
Merge changes to comment and function invocation.
2015-01-10 16:34:10 +11:00
teor
5ac26cb7c7 Fix a minor misspelling in util.c 2015-01-10 15:52:55 +11:00
Nick Mathewson
cb54cd6745 Merge branch 'bug9286_v3_squashed' 2015-01-07 10:06:50 -05:00
Nick Mathewson
7984fc1531 Stop accepting milliseconds in various directory contexts
Have clients and authorities both have new behavior, since the
fix for bug 11243 has gone in.  But make clients still accept
accept old bogus HSDir descriptors, to avoid fingerprinting trickery.

Fixes bug 9286.
2015-01-07 10:05:55 -05:00
Nick Mathewson
f54e54b0b4 Bump copyright dates to 2015, in case someday this matters. 2015-01-02 14:27:39 -05:00
Nick Mathewson
0965bbd5ac Merge remote-tracking branch 'origin/maint-0.2.5' 2014-12-22 16:02:47 -05:00
Nick Mathewson
6d728ba880 Merge remote-tracking branch 'public/bug14013_024' into maint-0.2.5 2014-12-22 15:58:49 -05:00
Nick Mathewson
47760c7ba5 When decoding a base-{16,32,64} value, clear the target buffer first
This is a good idea in case the caller stupidly doesn't check the
return value from baseX_decode(), and as a workaround for the
current inconsistent API of base16_decode.

Prevents any fallout from bug 14013.
2014-12-22 12:56:35 -05:00
Karsten Loesing
7cd53b75c1 Add better support to obfuscate statistics. 2014-12-10 11:16:26 +01:00
teor
fd7e9e9030 Stop failing when key files are zero-length
Instead, generate new keys, and overwrite the empty key files.
Adds FN_EMPTY to file_status_t and file_status.
Fixes bug 13111.

Related changes due to review of FN_FILE usage:
Stop generating a fresh .old RSA key file when the .old file is missing.
Avoid overwriting .old key files with empty key files.
Skip loading zero-length extra info store, router store, stats, state,
and key files.
2014-11-08 20:31:20 +11:00
teor
ce7fd6e160 Stop crashing when a NULL filename is passed to file_status()
Stop crashing when a NULL filename is passed to file_status(),
instead, return FN_ERROR.
Also return FN_ERROR when a zero-length filename is passed to file_status().
Fixed as part of bug 13111.
2014-11-08 20:26:53 +11:00
Nick Mathewson
8f645befba 11291: Fix warnings, add changes file, rename 'mask'. 2014-11-05 14:12:18 -05:00
Nick Mathewson
4df419a4b1 Merge remote-tracking branch 'meejah/ticket-11291-extra-utests'
Conflicts:
	src/or/config.c
2014-11-05 14:11:47 -05:00
Nick Mathewson
60c86a3b79 Merge branch 'bug13315_squashed'
Conflicts:
	src/or/buffers.c
2014-11-04 00:48:25 -05:00
Nick Mathewson
74cbd8d559 fix indentation 2014-11-04 00:46:32 -05:00
Nick Mathewson
254ab5a8de Use correct argument types for inet_pton.
(I blame whoever decided that using a void* for a union was a good
idea.)
2014-11-04 00:45:14 -05:00
rl1987
0da4ddda4f Checking if FQDN is actually IPv6 address string and handling that case. 2014-11-04 00:37:24 -05:00