Commit Graph

303 Commits

Author SHA1 Message Date
Sebastian Hahn
265e40b481 Raise libevent dependency to 2.0.10-stable or newer
Only some very ancient distributions don't ship with Libevent 2 anymore,
even the oldest supported Ubuntu LTS version has it. This allows us to
get rid of a lot of compat code.
2016-07-04 12:40:09 +02:00
U+039b
e607a2d9a0 Fix #19449 Remove --disable-transparent configure option 2016-06-29 14:54:14 -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
e54f8e3429 Remove some duplicated warnings from the big list 2016-06-14 19:28:56 -04:00
Nick Mathewson
99a7ddd6f9 Disable -Wc99-c11-compat
It triggers on the openssl headers, and doesn't seem to actually
help us.
2016-06-14 13:28:43 -04:00
Nick Mathewson
80f2c3555d Remove -Wc11-extensions
FreeBSD uses _Generic() in its system headers, and is within its
rights to do so.
2016-06-11 17:37:34 -04:00
Nick Mathewson
cb71c5ddbb Whoops -- this got lost in the merge. 2016-06-11 12:58:24 -04:00
Nick Mathewson
d6b2af7a3a Merge branch 'bug19180_easy_squashed' 2016-06-11 10:15:40 -04:00
Nick Mathewson
e80a032b61 Add clang's -Wstring-conversion, and fix the one place it hits 2016-06-11 10:11:54 -04:00
Nick Mathewson
53a3b39da1 Add -Wmissing-variable-declarations, with attendant fixes
This is a big-ish patch, but it's very straightforward.  Under this
clang warning, we're not actually allowed to have a global variable
without a previous extern declaration for it.  The cases where we
violated this rule fall into three roughly equal groups:
  * Stuff that should have been static.
  * Stuff that was global but where the extern was local to some
    other C file.
  * Stuff that was only global when built for the unit tests, that
    needed a conditional extern in the headers.

The first two were IMO genuine problems; the last is a wart of how
we build tests.
2016-06-11 10:11:54 -04:00
Nick Mathewson
80f1a2cbbd Add the -Wextra-semi warning from clang, and fix the cases where it triggers 2016-06-11 10:11:54 -04:00
Nick Mathewson
26e979b342 Add all the clang-only warnings that do not trigger now 2016-06-11 10:11:53 -04:00
Nick Mathewson
15533c8897 Set our autoconf-breaking options last, not before we check for others 2016-06-11 10:11:53 -04:00
Nick Mathewson
9bbd6502f0 Use autoconf, not gcc version, to decide which warnings we have
This gives more accurate results under Clang, which can only help us
detect more warnings in more places.

Fixes bug 19216; bugfix on 0.2.0.1-alpha
2016-06-11 10:11:53 -04:00
Nick Mathewson
ad16c55286 Use -Wstrict-overflow=2 on gcc5+. 2016-06-11 10:11:53 -04:00
Nick Mathewson
4caed2424a Enable -Woverlength-strings for GCC>=4.6 on MOST of the code.
IMO it's fine for us to make exceptions to this rule in the unit
tests, but not in the code at large.
2016-06-11 10:11:52 -04:00
Nick Mathewson
8f2d2933f9 Use -Wdouble-promotion in GCC >= 4.6
This warning triggers on silently promoting a float to a double.  In
our code, it's just a sign that somebody used a float by mistake,
since we always prefer double.
2016-06-11 10:11:52 -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
2ff20c93a5 Add -Wunused-const-variable=2 on GCC >=6.1
This caused a trivial warning in curve25519-donna-64bit.h, which
had two unused constants.  I commented them out.
2016-06-11 10:11:52 -04:00
Nick Mathewson
12517c7303 Add -Wduplicated-cond on GCC 6 2016-06-11 10:11:52 -04:00
Nick Mathewson
4f8086fb20 Enable -Wnull-dereference (GCC >=6.1), and fix the easy cases
This warning, IIUC, means that the compiler doesn't like it when it
sees a NULL check _after_ we've already dereferenced the
variable. In such cases, it considers itself free to eliminate the
NULL check.

There are a couple of tricky cases:

One was the case related to the fact that tor_addr_to_in6() can
return NULL if it gets a non-AF_INET6 address.  The fix was to
create a variant which asserts on the address type, and never
returns NULL.
2016-06-11 10:10:29 -04:00
Nick Mathewson
57bf8bb263 remove now-irrelevant XXX020 comments in configure.ac
They apply to ancient GCC versions and to an unknown set of
configuration options. Notabug.
2016-05-30 15:31:19 -04:00
Nick Mathewson
55b5e0076f Add another 22 or so GCC warnings. None currently triggers for me. 2016-05-28 17:09:31 -04:00
Nick Mathewson
1e5ad15688 Merge remote-tracking branch 'arma/task19035-fixedup' 2016-05-27 13:22:16 -04:00
Nick Mathewson
617b920551 Merge remote-tracking branch 'public/hardening_flags_must_link' 2016-05-27 12:52:39 -04:00
Roger Dingledine
1ce1214d68 get rid of one more piece of --enable-instrument-downloads 2016-05-27 12:32:02 -04:00
cypherpunks
c404905822 Fix indentation and quotation of the headers 2016-05-27 11:56:34 -04:00
cypherpunks
ab8f1a9e9b Do not warn on missing headers 2016-05-27 11:56:30 -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
Roger Dingledine
11d52a449c Disable GET /tor/bytes.txt and GETINFO dir-usage
Remove support for "GET /tor/bytes.txt" DirPort request, and
"GETINFO dir-usage" controller request, which were only available
via a compile-time option in Tor anyway.

Feature was added in 0.2.2.1-alpha. Resolves ticket 19035.
2016-05-27 11:15:21 -04:00
Nick Mathewson
a0dd836098 Merge remote-tracking branch 'public/ticket19044' 2016-05-27 10:39:34 -04:00
Nick Mathewson
44ea3dc331 Merge branch 'maint-0.2.8' 2016-05-25 10:21:15 -04:00
Nick Mathewson
be3875cda2 Make sure that libscrypt_scrypt actually exists before using it.
Previously, if the header was present, we'd proceed even if the
function wasn't there.

Easy fix for bug 19161.  A better fix would involve trying harder to
find libscrypt_scrypt.
2016-05-24 10:31:02 -04:00
Nick Mathewson
2fa7a3af4c Make advisory-warnings on by default.
Add --enable-fatal-warnings to control -Werror.

Closes ticket 19044.
2016-05-23 14:39:56 -04:00
Nick Mathewson
60ac07940f Fix "conditional "ADD_MULODI4" was never defined". 2016-05-19 16:38:24 -04:00
Nick Mathewson
ae7e2b9a7c add missing atoi for cosmetic reasons 2016-05-19 16:01:25 -04:00
Nick Mathewson
6d6c8287d5 Include __mulodi4 in libor_ctime when it fixes clang -m32 -ftrapv
We use a pretty specific pair of autoconf tests here to make sure
that we only add this code when:
   a) a 64-bit signed multiply fails to link,
 AND
   b) the same 64-bit signed multiply DOES link correctly when
      __mulodi4 is defined.

Closes ticket 19079.
2016-05-18 09:50:38 -04:00
Nick Mathewson
d9080f5d3a Check linking of hardening options, give better warnings if it fails.
Previously we'd only check whether the hardening options succeeded
at the compile step. Now we'll try to link with them too, and tell
the user in advance if something seems likely to go wrong.

Closes ticket 18895.
2016-05-16 09:37:27 -04:00
Nick Mathewson
9abd7b8f90 Windows lacks truncate(3).
Fix the new crypto tests, which used truncate(3).
2016-05-16 09:25:19 -04:00
Nick Mathewson
607a9056d4 Merge branch 'ftrapv_v3'
There were some conflicts here, and some breakage to fix concerning
library link order in newer targets.
2016-05-12 13:00:45 -04:00
Nick Mathewson
a3615a988e Prefer builtin true. 2016-05-12 12:54:15 -04:00
Nick Mathewson
ce854a8d22 Add -ftrapv to gcc-hardening ... mostly!
We know there are overflows in curve25519-donna-c32, so we'll have
to have that one be fwrapv.

Only apply the asan, ubsan, and trapv options to the code that does
not need to run in constant time.  Those options introduce branches
to the code they instrument.

(These introduced branches should never actually be taken, so it
might _still_ be constant time after all, but branch predictors are
complicated enough that I'm not really confident here. Let's aim for
safety.)

Closes 17983.
2016-05-12 11:21:28 -04:00
Nick Mathewson
e31980f693 Merge branch 'maint-0.2.8' 2016-05-11 12:23:40 -04:00
Nick Mathewson
50249c7cd9 Merge branch 'maint-0.2.7' into maint-0.2.8 2016-05-11 12:23:20 -04:00
Nick Mathewson
039fc8427a Merge branch 'bug18841_1_025' into maint-0.2.7 2016-05-11 12:22:36 -04:00
Nick Mathewson
c662bef455 Undefine _FORTIFY_SOURCE before defining it.
This makes our compilation options checks in autoconf work better on
systems that already define _FORTIFY_SOURCE.

Fixes at least one case of bug 18841; bugfix on 0.2.3.17-beta. Patch
from "trudokal".
2016-05-11 12:15:37 -04:00
Nick Mathewson
3220bd816b Merge branch 'maint-0.2.8' 2016-03-28 16:14:21 -04:00
Nick Mathewson
c8eb39d67f Remove a couple of redundant lines from the makefile
Fixes the last case of 17744.
2016-03-28 16:11:25 -04:00
Nick Mathewson
447b1c6b1d Begin an 0.2.9 branch 2016-03-28 15:54:59 -04:00
Nick Mathewson
a3f36bfd81 and NOW the version is 0.2.8.2-alpha-dev 2016-03-28 15:53:17 -04:00