Commit Graph

24591 Commits

Author SHA1 Message Date
Alexander Færøy
fac8ac0e4a
Remove unused header from the Zstandard compression backend.
Since we stopped looking at Zstandard error codes there is no need to
include the zstd_errors.h header file anymore.
2017-04-26 02:54:34 +02:00
Nick Mathewson
43db91bd87 Teach cov-exclude to detect runaway LCOV_EXCL_START lines
Also, fix two instances of runaway LCOV_EXCL_START lines.
2017-04-25 10:59:19 -04:00
Nick Mathewson
7a37cbbea3 Whitespace fixes. 2017-04-25 10:54:34 -04:00
Nick Mathewson
49868340f7 Merge branch 'unified_compress_squashed' 2017-04-25 10:51:13 -04:00
Nick Mathewson
49a5b50b31 zlib: Turn UINT_MAX overrun into an error, not an assert. 2017-04-25 10:50:50 -04:00
Nick Mathewson
4b01b45ec1 Add a "best compression" flag. 2017-04-25 10:50:50 -04:00
Nick Mathewson
880fb3e3a9 Combine all *compress/*uncompress backend function into one
Since we have a streaming API for each compression backend, we don't
need a non-streaming API for each: we can build a common
non-streaming API at the front-end.
2017-04-25 10:50:50 -04:00
Nick Mathewson
232c9e14a8 Merge branch 'atomic_counters' 2017-04-25 10:46:23 -04:00
Nick Mathewson
ec7c512d27 Merge remote-tracking branch 'dgoulet/bug21293_031_01' 2017-04-25 10:43:53 -04:00
Nick Mathewson
6bf82a4910 More clarification on 13802 2017-04-25 10:40:30 -04:00
David Goulet
cb8ac1f331 trace: Add a basic event-tracing infrastructure.
This commit adds the src/trace directory containing the basics for our tracing
subsystem. It is not used in the code base. The "src/trace/debug.h" file
contains an example on how we can map our tor trace events to log_debug().

The tracing subsystem can only be enabled by tracing framework at compile
time. This commit introduces the "--enable-tracing-debug" option that will
make all "tor_trace()" function be maped to "log_debug()".

Closes #13802

Signed-off-by: David Goulet <dgoulet@torproject.org>
2017-04-25 10:37:31 -04:00
Nick Mathewson
4266ec766a Use atomic counters for compressor allocation. 2017-04-25 10:29:07 -04:00
David Goulet
368b091329 relay: Change LD_BUG log to LD_PROTOCOL_WARN
That log statement can be triggered if somebody on the Internet behaves badly
which is possible with buggy implementation for instance.

Fixes #21293

Signed-off-by: David Goulet <dgoulet@torproject.org>
2017-04-25 09:27:34 -04:00
Alexander Færøy
91dd4a00f7
Rename shadowing variable in compress_zlib.c.
This patch renames the `compress` parameter of the
`tor_zlib_compress_new()` function to `_compress` to avoid shadowing the
`compress()` function in zlib.h.
2017-04-25 14:56:55 +02:00
Nick Mathewson
754b86ba01 changes file for 21662/21663/21664 2017-04-25 08:22:21 -04:00
Nick Mathewson
ba405f86bf Merge branch 'ahf_prop278_21662_squashed' 2017-04-25 08:12:59 -04:00
Alexander Færøy
2210b330e7 Fix newlines in compression headers.
See: https://bugs.torproject.org/21662
2017-04-25 08:11:32 -04:00
Alexander Færøy
cf912259ba Remove tor_compress_memory_level().
This patch splits up `tor_compress_memory_level()` into static functions
in the individual compression backends, which allows us to tune the
values per compression backend rather than globally.

See: https://bugs.torproject.org/21662
2017-04-25 08:11:32 -04:00
Alexander Færøy
69a41e8bc6 Use switch-statement in tor_{compress,uncompress}.
Use a switch-statement in `tor_compress()` and `tor_uncompress()` for
the given `compress_method_t` parameter. This allows us to have the
compiler detect if we forgot add a handler in these functions for a
newly added enumeration value.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:10 -04:00
Alexander Færøy
c2d1d949de Use tor_compress_supports_method() before printing library versions.
This patch ensures that Tor checks if a given compression method is
supported before printing the version string when calling `tor
--library-versions`.

Additionally, we use the `tor_compress_supports_method()` to check if a
given version is supported for Tor's start-up version string, but here
we print "N/A" if a given compression method is unavailable.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:10 -04:00
Alexander Færøy
6b905b38bb Add API entry-point for getting compression method version numbers.
This patch adds `tor_compress_version_str()` and
`tor_compress_header_version_str()` to get the version strings of the
different compression schema providers. Both functions returns `NULL` in
case a given `compress_method_t` is unknown or unsupported.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:10 -04:00
Alexander Færøy
1c77d8690c Add function to check if a given compression method is supported.
This patch adds support for checking if a given `compress_method_t` is
supported by the currently running Tor instance using
`tor_compress_supports_method()`.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
04682d302a Add tor_compress_get_total_allocation() function.
This patch adds the `tor_compress_get_total_allocation()` which returns
an approximate number of bytes currently in use by all the different
compression backends.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
be4dc54634 Display LZMA and Zstandard versions when starting Tor.
See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
2fa7b722ce Show liblzma and libzstd versions in tor --library-versions.
See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
380736d045 Add Zstandard support.
See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
ce1feae9d9 Add --enable-zstd to our configure script.
This patch adds support for enabling support for Zstandard to our configure
script. By default, the --enable-zstd option is set to "auto" which means if
libzstd is available we'll build Tor with Zstandard support.

See: https://bugs.torproject.org/21662
2017-04-25 08:10:09 -04:00
Alexander Færøy
bf1c07cb07 Add LZMA support.
See: https://bugs.torproject.org/21662
2017-04-25 08:10:06 -04:00
Alexander Færøy
157af1d26e Add --enable-lzma to our configure script.
This patch adds support for enabling support for LZMA to our configure
script. By default, the --enable-lzma option is set to "auto" which
means if liblzma is available we'll build Tor with LZMA support.

See: https://bugs.torproject.org/21662
2017-04-25 08:06:02 -04:00
Alexander Færøy
c171af0487 Use a switch-statement when checking for compression method.
This patch changes the way `tor_compress_new()`,
`tor_compress_process()`, and `tor_compress_free()` handles different
compression methods. This should give us compiler warnings in case an
additional compression method is added, but the developer forgets to add
handlers in the three aforementioned functions.

See https://bugs.torproject.org/21663
2017-04-25 08:06:01 -04:00
Alexander Færøy
300ac49685 Add compress_zlib.obj to src/common/Makefile.nmake.
See https://bugs.torproject.org/21663
2017-04-25 08:06:01 -04:00
Alexander Færøy
04583df452 Rename the torgzip module to compress.
See https://bugs.torproject.org/21663
2017-04-25 08:06:01 -04:00
Alexander Færøy
9d5bc1a935 Move zlib compression code into its own module.
This patch refactors the `torgzip` module to allow us to extend a common
compression API to support multiple compression backends.

Additionally we move the gzip/zlib code into its own module under the
name `compress_zlib`.

See https://bugs.torproject.org/21664
2017-04-25 08:06:01 -04:00
Nick Mathewson
db95a6e171 Fix implicit conversion warnings in the period_num tests 2017-04-24 15:38:16 -04:00
Nick Mathewson
960a09689c Remove changes files that are already merged into 0.3.0. 2017-04-24 15:22:37 -04:00
Nick Mathewson
4cefda85e4 Merge remote-tracking branch 'dgoulet/ticket21980_031_01' 2017-04-24 12:42:11 -04:00
Nick Mathewson
d949589c09 Fix some leaks in the consdiffmgr tests 2017-04-24 11:45:13 -04:00
Nick Mathewson
e55c1412c1 Fix a signed/unsigned comparison warning on 32-bit 2017-04-24 11:41:11 -04:00
Nick Mathewson
b7567a6282 Merge branch 'consdiffmgr_squashed' 2017-04-24 11:02:22 -04:00
Nick Mathewson
eb14faa0c1 Remove a checklist item that was already tested
The item referred to the cdm_ht_set_status() case where the item was
not already in the hashtable.  But that already happens naturally
when we scan the directory on startup... and we already have a test
for that.
2017-04-24 11:01:40 -04:00
Nick Mathewson
af86895581 consdiffmgr test: do not launch a diff task that is already pending 2017-04-24 11:01:40 -04:00
Nick Mathewson
2e9e2d023b consdiffmgr: tests for consdiffmgr_validate() 2017-04-24 11:01:40 -04:00
Nick Mathewson
6cc21aa89c consdiffmgr: add tests for cdm_entry_get_sha3_value 2017-04-24 11:01:40 -04:00
Nick Mathewson
bb38657b77 consdiffmgr test: add a test for updating ht on clean/rescan.
This brings us back up to ~94% coverage
2017-04-24 11:01:40 -04:00
Nick Mathewson
de0142cd9d Expand diff-management test to cover reloading items from disk 2017-04-24 11:01:40 -04:00
Nick Mathewson
43d683e0ad Fix reference leak & handle leak in consensus_diff_worker_replyfn
Found by previous test.
2017-04-24 11:01:40 -04:00
Nick Mathewson
831e656baa consdiffmgr tests: add tests to validate diff lookup/application
This commit adds some helper functions to look up the diff from one
consensus and to make sure that applying it leads to another.  Then
we add them throughout the existing test cases.  Doing this turned
up a reference-leaking bug in consensus_diff_worker_replyfn.
2017-04-24 11:01:40 -04:00
Nick Mathewson
605bcfbf71 consdiffmgr: Enable in-progress test that was not previously working
Also, add a list of additional tests to write.
2017-04-24 11:01:40 -04:00
Nick Mathewson
7ca86b9cd6 Add a hashtable to consdiffmgr to keep track of diff status
In several places in the old code, we had problems that only an
in-memory index of diff status could solve, including:
   * Remembering which diffs were in-progress, so that we didn't
     re-launch them.
   * Remembering which diffs had failed, so that we didn't try to
     recompute them over and over.
   * Having a fast way to look up the diff from a given consensus to
     the latest consensus of a given flavor.

This patch adds a hashtable mapping from (flavor, source diff), to
solve the problem.  It maps to a cache entry handle, rather than to
a cache entry directly, so that it doesn't affect the reference
counts of the cache entries, and so that we don't otherwise need to
worry about lifetime management.
2017-04-24 11:01:40 -04:00
Nick Mathewson
69a212ff3d Consdiffmgr: extract "get a sha3 digest" function.
I'll be using this a lot in the hashtable tweaks here.
2017-04-24 11:01:40 -04:00