Commit Graph

1975 Commits

Author SHA1 Message Date
David Benjamin
1386aad102 Switch various things to scopers.
Clear out some of the easy cases.

Bug: 132
Change-Id: Icd5c246cb6bec4a96c72eccd6569235c3d030ebd
Reviewed-on: https://boringssl-review.googlesource.com/18204
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-20 16:29:33 +00:00
David Benjamin
cfc11c2320 C++-ify SSL_AEAD_CTX.
This adds several utilities as replacements for new and delete and makes
bssl::UniquePtr work with our private types.

Later work can convert more incrementally. I did this one more
aggressively to see how it'd work. Unfortunately, in doing so, I needed
to remove the NULL SSL_AEAD_CTX "method" receiver trick to appease
clang. The null cipher is now represented by a concrete SSL_AEAD_CTX.
The long-lived references to SSL_AEAD_CTX are not yet in types with
constructors, so they still bare Delete rather than UniquePtr for now.

Though this does mean we may be able to move the sequence number into
SSLAEADContext later which is one less object for DTLS to carry around.

Bug: 132
Change-Id: I506b404addafb692055d5709b0ca6d5439a4e6be
Reviewed-on: https://boringssl-review.googlesource.com/18164
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-20 03:17:06 +00:00
David Benjamin
86e95b852e Move libssl's internals into the bssl namespace.
This is horrible, but everything else I tried was worse. The goal with
this CL is to take the extern "C" out of ssl/internal.h and move most
symbols to namespace bssl, so we can start using C++ helpers and
destructors without worry.

Complications:

- Public API functions must be extern "C" and match their declaration in
  ssl.h, which is unnamespaced. C++ really does not want you to
  interleave namespaced and unnamespaced things. One can actually write
  a namespaced extern "C" function, but this means, from C++'s
  perspective, the function is namespaced. Trying to namespace the
  public header would worked but ended up too deep a rabbithole.

- Our STACK_OF macros do not work right in namespaces.

- The typedefs for our exposed but opaque types are visible in the
  header files and copied into consuming projects as forward
  declarations. We ultimately want to give SSL a destructor, but
  clobbering an unnamespaced ssl_st::~ssl_st seems bad manners.

- MSVC complains about ambiguous names if one typedefs SSL to bssl::SSL.

This CL opts for:

- ssl/*.cc must begin with #define BORINGSSL_INTERNAL_CXX_TYPES. This
  informs the public headers to create forward declarations which are
  compatible with our namespaces.

- For now, C++-defined type FOO ends up at bssl::FOO with a typedef
  outside. Later I imagine we'll rename many of them.

- Internal functions get namespace bssl, so we stop worrying about
  stomping the tls1_prf symbol. Exported C functions are stuck as they
  are. Rather than try anything weird, bite the bullet and reorder files
  which have a mix of public and private functions. I expect that over
  time, the public functions will become fairly small as we move logic
  to more idiomatic C++.

  Files without any public C functions can just be written normally.

- To avoid MSVC troubles, some bssl types are renamed to CPlusPlusStyle
  in advance of them being made idiomatic C++.

Bug: 132
Change-Id: Ic931895e117c38b14ff8d6e5a273e868796c7581
Reviewed-on: https://boringssl-review.googlesource.com/18124
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-19 19:10:59 +00:00
Steven Valdez
0e4a448ab8 Add ClientHello no_session_id variant.
Change-Id: I3d249582dea871d7b1c078a6b5f57679037d1b8f
Reviewed-on: https://boringssl-review.googlesource.com/17984
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
2017-07-18 19:58:10 +00:00
David Benjamin
71dfad4d10 Add new functions for configuring the client CA list.
This is needed to switch Chromium's SSLServerSocket and parts of
Conscrypt to CRYPTO_BUFFER.

Bug: 54
Change-Id: Iacd417970607bc1a162057676b576956a3bdfa3f
Reviewed-on: https://boringssl-review.googlesource.com/17965
Reviewed-by: Adam Langley <agl@google.com>
2017-07-17 22:34:04 +00:00
David Benjamin
3a1dd46e4e Add async certificate verification callback.
This also serves as a certificate verification callback for
CRYPTO_BUFFER-based consumers. Remove the silly
SSL_CTX_i_promise_to_verify_certs_after_the_handshake placeholder.

Bug: 54, chromium:347402
Change-Id: I4c6b445cb9cd7204218acb2e5d1625e6f37aff6f
Reviewed-on: https://boringssl-review.googlesource.com/17964
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-17 20:55:23 +00:00
Adam Langley
11d11d6184 Fix and/or annotate all switch fall-throughs.
In some configurations, Clang will warn about all unannotated
fall-throughs in C++. This change adds the needed annotation for Clang
in the single place where we appear to have this.

Change-Id: I25a9069e659ce278d3cd24bf46f667324b3d5146
Reviewed-on: https://boringssl-review.googlesource.com/18024
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-17 18:52:06 +00:00
David Benjamin
09ed11928e Test that record-splitting splits records.
We probably should not have been able to land
https://boringssl-review.googlesource.com/17944 without a test
suppression.

Change-Id: Ie47ca324f94d2f03b7d31218b0379656c070b21b
Reviewed-on: https://boringssl-review.googlesource.com/17905
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-17 14:19:13 +00:00
Adam Langley
14308731e5 Disable record splitting in fuzzer mode.
Record splitting is a send-side only behaviour and supporting it in
fuzzer mode was messy.

Change-Id: I406d2cc77f1d83ed2039a85b95acdfbc815f5a44
Reviewed-on: https://boringssl-review.googlesource.com/17944
Reviewed-by: Adam Langley <agl@google.com>
2017-07-14 23:56:12 +00:00
David Benjamin
a3d76d019f Switch OPENSSL_COMPILE_ASSERT to static_assert in C++ code.
Clang for Windows does not like OPENSSL_COMPILE_ASSERT inside a function
in C++. It complains that the struct is unused. I think we worked around
this in C previously by making it expand to C11 _Static_assert when
available.

But libssl is now C++ and assumes a C++11-capable compiler. Use real
static_assert.

Bug: 132
Change-Id: I6aceb95360244bd2c80d194b80676483abb60519
Reviewed-on: https://boringssl-review.googlesource.com/17924
Reviewed-by: Adam Langley <agl@google.com>
2017-07-14 23:53:51 +00:00
Martin Kreichgauer
9f2bffbb72 Add SSL_AEAD_CTX_seal_scatter.
This plumbs EVP_AEAD_CTX_seal_scatter all the way through to
tls_record.c, so we can add a new zero-copy record sealing method on top
of the existing code.

Change-Id: I01fdd88abef5442dc16605ea31b29b4b1231c073
Reviewed-on: https://boringssl-review.googlesource.com/17684
Reviewed-by: Adam Langley <agl@google.com>
2017-07-14 23:37:57 +00:00
David Benjamin
b853f315dd Fix handling of ServerHellos with omitted extensions.
Due to SSL 3.0 legacy, TLS 1.0 through 1.2 allow ClientHello and
ServerHello messages to omit the extensions field altogether, rather
than write an empty field. We broke this in
https://boringssl-review.googlesource.com/c/17704/ when we needed to a
second ServerHello parsing path.

Fix this and add some regression tests to explicitly test both the
omitted and empty extensions ClientHello and ServerHello cases.

Bug: chromium:743218
Change-Id: I8297ba608570238e19f12ea44a9fe2fe9d881d28
Reviewed-on: https://boringssl-review.googlesource.com/17904
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-14 23:17:40 +00:00
David Benjamin
c386440683 Add some timestamps to connect/accept failures.
This is in an attempt to debug the Mac flakiness. The timestamps will
hopefully help narrow down the order of operations here.

Bug: 199
Change-Id: I8b8dd7222e3a57a8b055b8bc1b7731334e0fcdf0
Reviewed-on: https://boringssl-review.googlesource.com/17886
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-14 20:55:40 +00:00
David Benjamin
2abda63a4f Fix TLS 1.3 variant fuzzers.
This was broken when we added the API to SSL.

Change-Id: I92d4330b0d70f655c9a9ad33898d6b84704e915c
Reviewed-on: https://boringssl-review.googlesource.com/17884
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-14 20:21:24 +00:00
Steven Valdez
dbe01585ba Implement ContentType TLS 1.3 variant.
This implements PR #1051
(https://github.com/tlswg/tls13-spec/pull/1051).

Local experiments were not able to replicate the claims in the PR, but
implement this anyway for comparison purposes.

Change-Id: Ic9baf5e671f9a44565020466a553dd08f5ec0f1b
Reviewed-on: https://boringssl-review.googlesource.com/17844
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-14 19:48:00 +00:00
David Benjamin
8a5dcbcaaa Print the socket error when connect fails.
I suspect this won't actually tell us much useful w.r.t. the Mac test
flakes, but we may as well print what we can get.

Change-Id: I4931f6000648c4bd955a132b54351ff83d6b6273
Reviewed-on: https://boringssl-review.googlesource.com/17804
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-14 14:44:51 +00:00
David Benjamin
d304a2f1ac Switch tls13_client and tls13_server to C++.
And, with that, stage one is complete. ssl/internal.h may include C++.

Bug: 132
Change-Id: I0cb89f0ed5f4be36632a50744a80321595dc921c
Reviewed-on: https://boringssl-review.googlesource.com/17768
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-07-13 16:14:26 +00:00
David Benjamin
81678aabd7 Switch t1_lib, tls_record, and tls13_both to C++.
This leaves just the TLS 1.3 handshake code.

Bug: 132
Change-Id: I2bd87b0ecd0ae7d6ea1302bc62c67aec5ca1dccb
Reviewed-on: https://boringssl-review.googlesource.com/17767
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-07-13 16:14:02 +00:00
David Benjamin
0238d8f4ff Switch more files to C++.
Bug: 132
Change-Id: I2b0c87262a5a529ea264ea8ce2d11c2dba0ec1c8
Reviewed-on: https://boringssl-review.googlesource.com/17766
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-13 16:08:28 +00:00
David Benjamin
b609c22882 Switch ssl_privkey to C++.
In the process, merge the old canary function back in.

Bug: 132
Change-Id: Ib455320ecea67c839d0b4ac3882669d24f832b74
Reviewed-on: https://boringssl-review.googlesource.com/17765
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-13 16:08:04 +00:00
David Benjamin
f526081100 Switch ssl_aead_ctx, ssl_file, and ssl_lib to C++.
Bug: 132
Change-Id: I0b83bb05082aa6dad8c15f906cebc2d4f2d5216b
Reviewed-on: https://boringssl-review.googlesource.com/17764
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-07-13 16:06:41 +00:00
David Benjamin
81a5df4d60 Switch ssl_ecdh to C++.
The EC_POINT munging is sufficiently heavy on the goto err that I went
ahead and tidied it up.

Bug: 132
Change-Id: I7a3b3b3f166e39e4559acec834dd8e1ea9ac8620
Reviewed-on: https://boringssl-review.googlesource.com/17747
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-13 15:26:03 +00:00
David Benjamin
e64d2c74fa Convert ssl_buffer, ssl_cert, and ssl_cipher to C++.
ssl_cipher required fixing the types of the cipher masks.

Bug: 132
Change-Id: I0428d853b25fe4674ac3cad87a8eb92c6c8659e3
Reviewed-on: https://boringssl-review.googlesource.com/17746
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-13 15:10:43 +00:00
David Benjamin
d781fc424b Switch handshake_client and handshake_server to C++.
Bug: 132
Change-Id: Ic68252de7b3a8f90d60f052a3cb707730d5a2b16
Reviewed-on: https://boringssl-review.googlesource.com/17744
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-12 21:23:52 +00:00
David Benjamin
e8703a3708 Switch a number of files to C++.
http://i1.kym-cdn.com/photos/images/original/000/242/631/382.gif

In the first step, switch C files to C++ individually, keeping
everything in internal.h C-compatible. We'll make minimal changes needed
to get things compiling (notably a lot of goto errs will need to turn to
bssl::UniquePtr right away), but more aggressive changes will happen in
later steps.

(To avoid a rebase, I'm intentionally avoiding files that would conflict
with CLs in flight right now.)

Bug: 132
Change-Id: Id4cfd722e7b57d1df11f27236b4658b5d39b5fd2
Reviewed-on: https://boringssl-review.googlesource.com/17667
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-12 20:54:02 +00:00
Steven Valdez
52586f952e Adding TLS 1.3 variant to SSL*.
Change-Id: I3de3c48a1de59c2b8de348253ce62a648aa6d6eb
Reviewed-on: https://boringssl-review.googlesource.com/17724
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-11 19:41:37 +00:00
David Benjamin
1ffb4a4283 Route the TLS 1.3 experiment into the fuzzer.
Change-Id: Ie8216ab9de2edf37ae3240a5cb97d974e8252d93
Reviewed-on: https://boringssl-review.googlesource.com/17709
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-11 14:50:36 +00:00
David Benjamin
a502239475 Actually test the TLS 1.3 experimental variant.
Adding it to tlsVersions is sort of pointless when we don't test it.

Change-Id: Ie0c0167cef887aee54e5be90bf7fc98619c1a6fb
Reviewed-on: https://boringssl-review.googlesource.com/17708
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-11 14:34:07 +00:00
Steven Valdez
038da9b939 Move the version to an extension in the experimental TLS 1.3 encoding.
Change-Id: I0726e11006235db9309a8370a11e00ede0216279
Reviewed-on: https://boringssl-review.googlesource.com/17704
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-11 14:33:33 +00:00
David Benjamin
08fea48a91 Fix fuzzer mode test suppressions.
Change-Id: If59e911549f639976752c018ffd7253f41c6beda
Reviewed-on: https://boringssl-review.googlesource.com/17705
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
2017-07-10 19:52:00 +00:00
Steven Valdez
520e1220bb Implement experimental alternate encoding of TLS 1.3.
TLS 1.3 deployment is currently blocked by buggy middleboxes
throughout the ecosystem. As an experiment to better understand these bugs
and the problems they are causing, implement TLS 1.3 variants with
alternate encodings. These are still the same protocol, only encoded
slightly differently. We will use what we learn from these experiments to
guide the TLS 1.3 deployment strategy and proposals to the IETF, if any.

These experiments only target the basic 1-RTT TLS 1.3 handshake. Based on
what we learn from this experiment, we may try future variations to
explore 0-RTT and HelloRetryRequest.

When enabled, the server supports all TLS 1.3 variants while the client
is configured to use a particular variant.

Change-Id: I532411d1abc41314dc76acce0246879b754b4c61
Reviewed-on: https://boringssl-review.googlesource.com/17327
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-10 18:15:08 +00:00
David Benjamin
a818134b67 Simplify ChangeCipherSpec code in runner.
Not sure why it was expanded out like that.

Change-Id: I6899dbd23130ed7196c45c2784330b2a4fe9bdba
Reviewed-on: https://boringssl-review.googlesource.com/17666
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-07-10 17:39:43 +00:00
David Benjamin
d9cbb53562 Fix SSL_version on 0-RTT.
Like other handshake properties, when in 0-RTT on the client,
SSL_version should report the predicted version. This used to work on
accident because of how ssl->version got set in handshake_client.c early
(and that TLS 1.4 does not exist), but we no longer do that.

Change-Id: Ifb63a22b795fe8964ac553844a46040acd5d7323
Reviewed-on: https://boringssl-review.googlesource.com/17664
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-07 17:43:07 +00:00
David Benjamin
a1ce85696d Test record splitting at all ciphers.
We were missing AES256 and 3DES. Though this test dates to the old
record-splitting code which was much scarier than the new one.

Change-Id: Ia84a8c1a2bbd79fa70941f80cf6393013e4f13d5
Reviewed-on: https://boringssl-review.googlesource.com/17543
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:52:12 +00:00
David Benjamin
bf5f192310 Add some addition tests for the cipher parsing code and tidy.
The in_group check is redundant and test an extremely absurd corner of
the syntax.

Change-Id: Ia54bcd7cda7ba05415d3a250ee93e1acedcc43d6
Reviewed-on: https://boringssl-review.googlesource.com/17542
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:52:05 +00:00
David Benjamin
634f475255 Test the Channel IDs are not requested without ECDHE.
This was a workaround for triple handshake put in way back, before
extended master secret.

Change-Id: Ie0112fa6323522b17c90a833d558f7182586d2c3
Reviewed-on: https://boringssl-review.googlesource.com/17541
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:51:59 +00:00
David Benjamin
99a93d4327 Remove some unnecessary error codes.
Each of these cases should be rejected before we get to negotiating
anything. Save us a little bit of trouble.

Change-Id: I18cb66be1040dff7f25532da7e4c7d9c5ecd2748
Reviewed-on: https://boringssl-review.googlesource.com/17540
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:50:47 +00:00
David Benjamin
c3648faaa7 Add tests for SSL_VERIFY_PEER_IF_NO_OBC and fix TLS 1.3.
Also mirror the structure of the TLS 1.2 and TLS 1.3 code a bit.

Change-Id: I7b34bf30de63fa0bd47a39a90570846fb2314ad5
Reviewed-on: https://boringssl-review.googlesource.com/17539
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:50:41 +00:00
David Benjamin
364af78407 Add some cipher negotiation tests.
We've never actually written tests for equipreference groups at the
BoringSSL level.

Change-Id: I571c081534efbfa8e7b84846fafed0b772721da1
Reviewed-on: https://boringssl-review.googlesource.com/17538
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:50:36 +00:00
David Benjamin
eb083b0d35 Remove some dead code.
This function isn't used in TLS 1.3.

Change-Id: Icb6209396a36f243a84f0675b8f0c2435b08ad6c
Reviewed-on: https://boringssl-review.googlesource.com/17537
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:50:27 +00:00
David Benjamin
413e79e947 Test the client rejects invalid compression methods from the server.
Change-Id: I90286da596d5822d4cfedf40995d80cf76adaf97
Reviewed-on: https://boringssl-review.googlesource.com/17536
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-05 23:50:21 +00:00
David Benjamin
9343b0b8b3 Don't check renegotiation_info in fuzzer mode.
Otherwise the fuzzer gets stuck at renegotiations.

Bug: 104
Change-Id: If37f9ab165d06e37bfc5c423fba35edaabed293b
Reviewed-on: https://boringssl-review.googlesource.com/17532
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 23:48:42 +00:00
David Benjamin
0fde2eb0e3 Update TLS fuzzer format with prepended settings.
This allows us to fill in holes in our fuzzer coverage, notably client
resumption (and thus early data) and server client certificates. The
corpora are not refreshed yet. This will be done in upcoming changes.

Also add an option for debugging fuzzers. It's very useful to test it on
transcripts and make sure that fuzzer mode successfully makes things
compatible.

Bug: 104
Change-Id: I02f0be4045d1baf68efc9a4157f573df1429575d
Reviewed-on: https://boringssl-review.googlesource.com/17531
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-05 23:48:26 +00:00
David Benjamin
a6bae93bf8 Never set not_resumable on an immutable session.
Once passed to the outside world, an SSL_SESSION is immutable. It is not
thread-safe to set not_resumable. In most cases, the session is already
expired anyway. In other cases, making all this remove session be unlink rather than
destroy is sound and consistent with how we treat sessions elsewhere.

In particular, SSL_CTX_free calls SSL_CTX_flush_sessions(0), and
bulk-invalidating everything like this is interfering with some
follow-up changes to improve the fuzzer.

Change-Id: I2a19b8ce32d9effc1efaa72e934e015ebbbfbf9a
Reviewed-on: https://boringssl-review.googlesource.com/17530
Reviewed-by: David Benjamin <davidben@google.com>
2017-07-05 20:32:47 +00:00
Steven Valdez
c94998ae95 Revise version negotiation on the Go half.
This is in preparation for supporting multiple TLS 1.3 variants.

Change-Id: Ia2caf984f576f1b9e5915bdaf6ff952c8be10417
Reviewed-on: https://boringssl-review.googlesource.com/17526
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-05 20:18:09 +00:00
David Benjamin
353577cdc7 Fix SSL_set_{min,max}_proto_version APIs in invalid versions.
SSL_set_max_proto_version(TLS1_3_DRAFT_VERSION) worked unintentionally.
Fix that. Also add an error when it fails.

Change-Id: I1048fede7b163e1c170e17bf4370b468221a7077
Reviewed-on: https://boringssl-review.googlesource.com/17525
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-07-05 19:43:26 +00:00
Steven Valdez
8f36c51f98 Revise version negotiation logic on the C side.
This is in preparation for upcoming experiments which will require
supporting multiple experimental versions of TLS 1.3 with, on the
server, the ability to enable multiple variants at once. This means the
version <-> wire bijection no longer exists, even when limiting to a
single SSL*.  Thus version_to_wire is removed and instead we treat the
wire version as the canonical version value.

There is a mapping from valid wire versions to protocol versions which
describe the high-level handshake protocol in use. This mapping is not
injective, so uses of version_from_wire are rewritten differently.

All the version-munging logic is moved to ssl_versions.c with a master
preference list of all TLS and DTLS versions. The legacy version
negotiation is converted to the new scheme. The version lists and
negotiation are driven by the preference lists and a
ssl_supports_version API.

To simplify the mess around SSL_SESSION and versions, version_from_wire
is now DTLS/TLS-agnostic, with any filtering being done by
ssl_supports_version. This is screwy but allows parsing SSL_SESSIONs to
sanity-check it and reject all bogus versions in SSL_SESSION. This
reduces a mess of error cases.

As part of this, the weird logic where ssl->version is set early when
sending the ClientHello is removed. The one place where we were relying
on this behavior is tweaked to query hs->max_version instead.

Change-Id: Ic91b348481ceba94d9ae06d6781187c11adc15b0
Reviewed-on: https://boringssl-review.googlesource.com/17524
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2017-07-05 19:13:17 +00:00
David Benjamin
3120950b1e Size TLS read buffers based on the size requested.
Like the write half, rather than allocating the maximum size needed and
relying on the malloc implementation to pool this sanely, allocate the
size the TLS record-layer code believes it needs.

As currently arranged, this will cause us to alternate from a small
allocation (for the record header) and then an allocation sized to the
record itself. Windows is reportedly bad at pooling large allocations,
so, *if the server sends us smaller records*, this will avoid hitting
the problem cases.

If the server sends us size 16k records, the maximum allowed by ther
protocol, we simply must buffer up to that amount and will continue to
allocate similar sizes as before (although slightly smaller; this CL
also fixes small double-counting we did on the allocation sizes).

Separately, we'll gather some metrics in Chromium to see what common
record sizes are to determine if this optimization is sufficient. This
is intended as an easy optimization we can do now, in advance of ongoing
work to fix the extra layer of buffering between Chromium and BoringSSL
with an in-place decrypt API.

Bug: chromium:524258
Change-Id: I233df29df1212154c49fee4285ccc37be12f81dc
Reviewed-on: https://boringssl-review.googlesource.com/17329
Reviewed-by: Adam Langley <agl@google.com>
2017-06-23 23:08:35 +00:00
David Benjamin
5df5be1a4b Fix record header callback on writes.
These broke at some point. Add a test for them.

Change-Id: Ie45869e07d9615ae33aae4613f6d9b996af39528
Reviewed-on: https://boringssl-review.googlesource.com/17330
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-06-23 23:01:36 +00:00
David Benjamin
5aaaa98f8c Detect WatchGuard's TLS 1.3 interference failure mode.
WatchGuard's bug is very distinctive. Report a dedicated error code out
of BoringSSL so we can better track this.

Bug: chromium:733223
Change-Id: Ia42abd8654e7987b1d43c63a4f454f35f6aa873b
Reviewed-on: https://boringssl-review.googlesource.com/17328
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-06-22 19:49:23 +00:00