Commit Graph

71 Commits

Author SHA1 Message Date
David Benjamin
58150ed59b Add lh_FOO_retrieve_key to avoid stack-allocating SSL_SESSION.
lh_FOO_retrieve is often called with a dummy instance of FOO that has
only a few fields filled in. This works fine for C, but a C++
SSL_SESSION with destructors is a bit more of a nuisance here.

Instead, teach LHASH to allow queries by some external key type. This
avoids stack-allocating SSL_SESSION. Along the way, fix the
make_macros.sh script.

Change-Id: Ie0b482d4ffe1027049d49db63274c7c17f9398fa
Reviewed-on: https://boringssl-review.googlesource.com/29586
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-07-03 22:56:46 +00:00
David Benjamin
63c79122e0 Remove the redundant version check in ssl_session_cmp.
This partitions the session ID space of the internal cache by version,
which is nominally something we want, but we must check the version
externally anyway for both tickets and external session cache. That
makes this measure redundant. (Servers generate session IDs and 2^256 is
huge, so there would never accidentally be a collision.)

This cuts down on the "key" in the internal session cache, which will
simplify adding something like an lh_SSL_SESSION_retrieve_key function.
(LHASH is currently lax about keys because it can freely stack-allocate
partially-initialized structs. C++ is a bit more finicky about this.)

Change-Id: I656fd9dbf023dccb163d2e8049eff8f1f9a0e21b
Reviewed-on: https://boringssl-review.googlesource.com/29585
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-07-03 22:54:16 +00:00
David Benjamin
2908dd141f Add bssl::UpRef.
bssl::UniquePtr and FOO_up_ref do not play well together. Add a helper
to simplify this. This allows us to write things like:

   foo->cert = UpRef(bar->cert);

instead of:

   if (bar->cert) {
     X509_up_ref(bar->cert.get());
   }
   foo->cert.reset(bar->cert.get());

This also plays well with PushToStack. To append something to a stack
while taking a reference, it's just:

   PushToStack(certs, UpRef(cert))

Change-Id: I99ae8de22b837588a2d8ffb58f86edc1d03ed46a
Reviewed-on: https://boringssl-review.googlesource.com/29584
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-07-03 22:47:36 +00:00
David Benjamin
9bb15f58f7 Remove SSL 3.0 implementation.
Update-Note: SSL_CTX_set_min_proto_version(SSL3_VERSION) now fails.
   SSL_OP_NO_SSLv3 is now zero. Internal SSL3-specific "AEAD"s are gone.

Change-Id: I34edb160be40a5eea3e2e0fdea562c6e2adda229
Reviewed-on: https://boringssl-review.googlesource.com/29444
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-06-28 16:54:58 +00:00
David Benjamin
5267ef7b4a Reject unexpected application data in bidirectional shutdown.
Update-Note: This tweaks the SSL_shutdown behavior. OpenSSL's original
SSL_shutdown behavior was an incoherent mix of discarding the record and
rejecting it (it would return SSL_ERROR_SYSCALL but retrying the
operation would discard it). SSLeay appears to have intended to discard
it, so we previously "fixed" it actually discard.

However, this behavior is somewhat bizarre and means we skip over
unbounded data, which we typically try to avoid. If you are trying to
cleanly shutdown the TLS portion of your protocol, surely it is at a
point where additional data is a syntax error. I suspect I originally
did not realize that, because the discarded record did not properly
continue the loop, SSL_shutdown would appear as if it rejected the data,
and so it's unlikely anyone was relying on that behavior.

Discussion in https://github.com/openssl/openssl/pull/6340 suggests
(some of) upstream also prefers rejecting.

Change-Id: Icde419049306ed17eb06ce1a7e1ff587901166f3
Reviewed-on: https://boringssl-review.googlesource.com/28864
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@google.com>
2018-06-04 21:39:58 +00:00
Adam Langley
a307cb7d58 Preliminary support for compressed certificates.
This change adds server-side support for compressed certificates.

(Although some definitions for client-side support are included in the
headers, there's no code behind them yet.)

Change-Id: I0f98abf0b782b7337ddd014c58e19e6b8cc5a3c2
Reviewed-on: https://boringssl-review.googlesource.com/27964
Reviewed-by: David Benjamin <davidben@google.com>
2018-06-04 21:24:20 +00:00
David Benjamin
103ed08549 Implement legacy OCSP APIs for libssl.
Previously, we'd omitted OpenSSL's OCSP APIs because they depend on a
complex OCSP mechanism and encourage the the unreliable server behavior
that hampers using OCSP stapling to fix revocation today. (OCSP
responses should not be fetched on-demand on a callback. They should be
managed like other server credentials and refreshed eagerly, so
temporary CA outage does not translate to loss of OCSP.)

But most of the APIs are byte-oriented anyway, so they're easy to
support. Intentionally omit the one that takes a bunch of OCSP_RESPIDs.

The callback is benign on the client (an artifact of OpenSSL reading
OCSP and verifying certificates in the wrong order). On the server, it
encourages unreliability, but pyOpenSSL/cryptography.io depends on this.
Dcument that this is only for compatibility with legacy software.

Also tweak a few things for compatilibility. cryptography.io expects
SSL_CTX_set_read_ahead to return something, SSL_get_server_tmp_key's
signature was wrong, and cryptography.io tries to redefine
SSL_get_server_tmp_key if SSL_CTRL_GET_SERVER_TMP_KEY is missing.

Change-Id: I2f99711783456bfb7324e9ad972510be8a95e845
Reviewed-on: https://boringssl-review.googlesource.com/28404
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-05-11 22:21:26 +00:00
Matthew Braithwaite
e30fac6371 Fuzz SSL_serialize_handoff() and SSL_serialize_handback().
This is done by adding two new tagged data types to the shim's
transcript: one for the serialized handoff, and another for the
serialized handback.

Then, the handshake driver in |TLSFuzzer| is modified to be able to
drive a handoff+handback sequence in the same way as was done for
testing: by swapping |BIO|s into additional |SSL| objects.  (If a
particular transcript does not contain a serialized handoff, this is a
no-op.)

Change-Id: Iab23e4dc27959ffd3d444adc41d40a4274e83653
Reviewed-on: https://boringssl-review.googlesource.com/27204
Commit-Queue: Matt Braithwaite <mab@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-05-05 02:41:04 +00:00
David Benjamin
b95d4b4cb3 Move srtp_profiles to SSL_CONFIG.
These are also not needed after the handshake.

Change-Id: I5de2d5cf18a3783a6c04c0a8fe311069fb51b939
Reviewed-on: https://boringssl-review.googlesource.com/27986
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>
2018-05-03 15:20:13 +00:00
David Benjamin
98472cb30d Consistently use session_ctx for session caching.
The TLS 1.3 client logic used ctx instead. This is all moot as
SSL_set_SSL_CTX on a client really wouldn't work, but we should be
consistent. Unfortunately, this moves moving the pointer back to SSL
from SSL_CONFIG.

Change-Id: I45f8241e16f499ad416afd5eceb52dc82af9c4f4
Reviewed-on: https://boringssl-review.googlesource.com/27985
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>
2018-05-02 20:15:08 +00:00
David Benjamin
71666cb87c Allow renego and config shedding to coexist more smoothly.
Chrome needs to support renegotiation at TLS 1.2 + HTTP/1.1, but we're
free to shed the handshake configuration at TLS 1.3 or HTTP/2.

Rather than making config shedding implicitly disable renegotiation,
make the actual shedding dependent on a combination of the two settings.
If config shedding is enabled, but so is renegotiation (including
whether we are a client, etc.), leave the config around. If the
renegotiation setting gets disabled again after the handshake,
re-evaluate and shed the config then.

Bug: 123
Change-Id: Ie833f413b3f15b8f0ede617991e3fef239d4a323
Reviewed-on: https://boringssl-review.googlesource.com/27904
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Matt Braithwaite <mab@google.com>
2018-05-01 23:28:59 +00:00
Matthew Braithwaite
b7bc80a9a6 SSL_CONFIG: new struct for sheddable handshake configuration.
|SSL_CONFIG| is a container for bits of configuration that are
unneeded after the handshake completes.  By default it is retained for
the life of the |SSL|, but it may be shed at the caller's option by
calling SSL_set_shed_handshake_config().  This is incompatible with
renegotiation, and with SSL_clear().

|SSL_CONFIG| is reachable by |ssl->config| and by |hs->config|.  The
latter is always non-NULL.  To avoid null checks, I've changed the
signature of a number of functions from |SSL*| arguments to
|SSL_HANDSHAKE*| arguments.

When configuration has been shed, setters that touch |SSL_CONFIG|
return an error value if that is possible.  Setters that return |void|
do nothing.

Getters that request |SSL_CONFIG| values will fail with an |assert| if
the configuration has been shed.  When asserts are compiled out, they
will return an error value.

The aim of this commit is to simplify analysis of split-handshakes by
making it obvious that some bits of state have no effects beyond the
handshake.  It also cuts down on memory usage.

Of note: |SSL_CTX| is still reachable after the configuration has been
shed, and a couple things need to be retained only for the sake of
post-handshake hooks.  Perhaps these can be fixed in time.

Change-Id: Idf09642e0518945b81a1e9fcd7331cc9cf7cc2d6
Bug: 123
Reviewed-on: https://boringssl-review.googlesource.com/27644
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-05-01 20:40:16 +00:00
David Benjamin
48b276db3d Give ssl_cipher_preference_list_st a destructor.
Change-Id: I578a284c6a8cae773a97d3d30ad8a5cd13f56164
Reviewed-on: https://boringssl-review.googlesource.com/27491
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@google.com>
2018-04-24 19:55:29 +00:00
David Benjamin
e325c3f471 Give CERT a destructor.
Change-Id: I97f5290d908e59ece75fe5b8fa72d51c3cf62148
Reviewed-on: https://boringssl-review.googlesource.com/27489
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@google.com>
2018-04-16 20:25:23 +00:00
David Benjamin
e28552dec8 Add an API to disable RSA-PSS for certificates.
Chrome uses the platform certificate verifier and thus cannot reliably
expect PSS signatures to work in all configurations. Add an API for the
consumer to inform BoringSSL of this ability. We will then adjust our
advertisements accordingly.

Note that, because TLS 1.2 does not have the signature_algorithms_cert
extension, turning off TLS 1.3 and using this API will stop advertising
RSA-PSS. I believe this is the correct behavior given the semantics of
that code point.

The tests check the various combinations here, as well as checking that
the peer never sends signature_algorithms_cert identical to
signature_algorithms.

Bug: 229
Change-Id: I8c33a93efdc9252097e3899425b49548fc42a93a
Reviewed-on: https://boringssl-review.googlesource.com/27488
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@google.com>
2018-04-16 20:02:43 +00:00
David Benjamin
9f0e7cb314 Move TB state to ssl->s3.
These are connection state, so they should be reset on SSL_clear.

Change-Id: I861fe52578836615d2719c9e1ff0911c798f336e
Reviewed-on: https://boringssl-review.googlesource.com/27384
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Steven Valdez <svaldez@google.com>
2018-04-13 18:10:44 +00:00
Matthew Braithwaite
56986f905f Hand back ECDHE split handshakes after the first server message.
This changes the contract for split handshakes such that on the
receiving side, the connection is to be driven until it returns
|SSL_ERROR_HANDBACK|, rather than until SSL_do_handshake() returns
success.

Change-Id: Idd1ebfbd943d88474d7c934f4c0ae757ff3c0f37
Reviewed-on: https://boringssl-review.googlesource.com/26864
Commit-Queue: Matt Braithwaite <mab@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-04-04 17:58:15 +00:00
Adam Langley
40cdb3b5da Don't test |initial_handshake_complete| for dummy PQ padding status.
Checking |initial_handshake_complete| was a mistake—it's not true for
False Start connections at the time when Chrome wants to measure whether
PQ padding was used or not.

Change-Id: I51757e00f3e02129666ee1ce31c30d63f1bcbe74
Reviewed-on: https://boringssl-review.googlesource.com/26444
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-03-07 20:27:11 +00:00
Adam Langley
8df8e64205 Record whether dummy PQ padding was used.
On reflection, I think we'll need to note whether dummy PQ padding was
echoed on a given connection. Otherwise measurements in Chrome will be
mixed with cases where people have MITM proxies that ignored the
extension, or possibly Google frontends that haven't been updated.

Therefore this change will be used to filter latency measurements in
Chrome to only include those where the extension was echoed and we'll
measure at levels of 1 byte (for control), 400 bytes, and 1100 bytes.

This also makes it an error if the server didn't echo an extension of
the same length as was sent.

Change-Id: Ib2a0b29cfb8719a75a28f3cf96710c57d88eaa68
Reviewed-on: https://boringssl-review.googlesource.com/26284
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-02-28 23:38:53 +00:00
Adam Langley
e745b25dcb Remove trailing whitespace from ssl/.
Change-Id: Ibcb27e1e5b14294c9d877db89ae62ef138e9e061
Reviewed-on: https://boringssl-review.googlesource.com/26184
Reviewed-by: Adam Langley <agl@google.com>
2018-02-26 22:05:13 +00:00
David Benjamin
c03ecb93a2 Remove SSLv3_method and friends.
SSLv3_method, SSLv3_client_method, and SSLv3_server_method produce
SSL_CTXs which fail every handshake. They appear no longer necessary for
compatibility, so remove them.

SSLv3 is still accessible to callers who explicitly re-enable SSLv3 on a
TLS_method, but that will be removed completely later this year.
Meanwhile, clear out a weird hack we had here.

Update-Note: I believe there are no more callers of these functions. Any
   that were were already non-functional as these methods haven't been
   unable to handshake for a while now.

Change-Id: I622f785b428ab0ceab77b5a9db05b2b0df28145a
Reviewed-on: https://boringssl-review.googlesource.com/26004
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>
2018-02-15 15:29:18 +00:00
Adam Langley
3fe8fa74ac Add initial, experimental support for split handshakes.
Split handshakes allows the handshaking of a TLS connection to be
performed remotely. This encompasses not just the private-key and ticket
operations – support for that was already available – but also things
such as selecting the certificates and cipher suites.

The the comment block in ssl.h for details. This is highly experimental
and will change significantly before its settled.

Change-Id: I337bdfa4c3262169e9b79dd4e70b57f0d380fcad
Reviewed-on: https://boringssl-review.googlesource.com/25387
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
2018-01-31 22:24:17 +00:00
Nick Harper
3c034b2cf3 Add support for QUIC transport params.
This adds support for sending the quic_transport_parameters
(draft-ietf-quic-tls) in ClientHello and EncryptedExtensions, as well as
reading the value sent by the peer.

Bug: boringssl:224
Change-Id: Ied633f557cb13ac87454d634f2bd81ab156f5399
Reviewed-on: https://boringssl-review.googlesource.com/24464
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-01-30 23:54:40 +00:00
Nick Harper
36fcc4ca5d Implement Token Binding
Update-Note: Token Binding can no longer be configured with the custom
  extensions API. Instead, use the new built-in implementation. (The
  internal repository should be all set.)

Bug: 183

Change-Id: I007523a638dc99582ebd1d177c38619fa7e1ac38
Reviewed-on: https://boringssl-review.googlesource.com/20645
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-01-22 20:08:28 +00:00
Adam Langley
512a289a8a Add support for dummy PQ padding.
This extension will be used to measure the latency impact of potentially
sending a post-quantum key share by default. At this time it's purely
measuring the impact of the client sending the key share, not the server
replying with a ciphertext.

We could use the existing padding extension for this but that extension
doesn't allow the server to echo it, so we would need a different
extension in the future anyway. Thus we just create one now.

We can assume that modern clients will be using TLS 1.3 by the time that
PQ key-exchange is established and thus the key share will be sent in
all ClientHello messages. However, since TLS 1.3 isn't quite here yet,
this extension is also sent for TLS 1.0–1.2 ClientHellos. The latency
impact should be the same either way.

Change-Id: Ie4a17551f6589b28505797e8c54cddbe3338dfe5
Reviewed-on: https://boringssl-review.googlesource.com/24585
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-01-10 00:27:31 +00:00
David Benjamin
6df6540766 Add a draft TLS 1.3 anti-downgrade signal.
TLS 1.3 includes a server-random-based anti-downgrade signal, as a
workaround for TLS 1.2's ServerKeyExchange signature failing to cover
the entire handshake. However, because TLS 1.3 draft versions are each
doomed to die, we cannot deploy it until the final RFC. (Suppose a
draft-TLS-1.3 client checked the signal and spoke to a final-TLS-1.3
server. The server would correctly negotiate TLS 1.2 and send the
signal. But the client would then break. An anologous situation exists
with reversed roles.)

However, it appears that Cisco devices have non-compliant TLS 1.2
implementations[1] and copy over another server's server-random when
acting as a TLS terminator (client and server back-to-back).

Hopefully they are the only ones doing this. Implement a
measurement-only version with a different value. This sentinel must not
be enforced, but it will tell us whether enforcing it will cause
problems.

[1] https://www.ietf.org/mail-archive/web/tls/current/msg25168.html

Bug: 226
Change-Id: I976880bdb2ef26f51592b2f6b3b97664342679c8
Reviewed-on: https://boringssl-review.googlesource.com/24284
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2017-12-21 01:50:33 +00:00
David Benjamin
02e6256b16 Move early_data_accepted to ssl->s3.
This is connection state, not configuration, so it must live on
ssl->s3, otherwise SSL_clear will be confused.

Change-Id: Id7c87ced5248d3953e37946e2d0673d66bfedb08
Reviewed-on: https://boringssl-review.googlesource.com/24264
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>
2017-12-19 15:44:38 +00:00
David Benjamin
494e4d0e89 Add an option for False Start without ALPN.
We can probably do this globally at this point since the cipher
requirements are much more restrict than they were in the beginning.
(Firefox, in particular, has done so far a while.) For now add a flag
since some consumer wanted this.

I'll see about connecting it to a Chrome field trial after our breakage
budget is no longer reserved for TLS 1.3.

Change-Id: Ib61dd5aae2dfd48b56e79873a7f3061a7631a5f8
Reviewed-on: https://boringssl-review.googlesource.com/23725
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2017-12-04 21:20:46 +00:00
Steven Valdez
cd8470f7fa Adding support for draft 21 as a TLS 1.3 variant.
Change-Id: I46686aea9b68105cfe70a11db0e88052781e179c
Reviewed-on: https://boringssl-review.googlesource.com/22164
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
2017-11-01 21:32:36 +00:00
David Benjamin
5be3a74c49 Remove supports_cipher hook.
RC4 is gone. The only remaining exception was the dumb SSL_eNULL cipher,
which works fine in DTLS. It doesn't seem worth the trouble to retain
this special-case.

Change-Id: I31023b71192808e4d21e82109255dc4d6d381df8
Reviewed-on: https://boringssl-review.googlesource.com/22467
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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2017-11-01 16:44:46 +00:00
David Benjamin
32ce0ac0d8 Move init_buf and rwstate into SSL3_STATE.
This finally clears most of the SSL_clear special-cases.

Change-Id: I00fc240ccbf13f4290322845f585ca6f5786ad80
Reviewed-on: https://boringssl-review.googlesource.com/21947
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-24 18:55:05 +00:00
David Benjamin
8e7bbbab15 Use more scopers.
Change-Id: I34dd0a57efd5435fcdc59a3c7b1ce806bc0cbb3e
Reviewed-on: https://boringssl-review.googlesource.com/21946
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-10-24 17:50:05 +00:00
David Benjamin
ea712e317f Make SSL3_BUFFER a proper C++ class.
As with SSLTranscript before, we temporarily need some nastiness in
SSL3_STATE, but this is in preparation of giving SSL3_STATE a
constructor and destructor.

Change-Id: Ifc0ce34fdcd8691d521d8ea03ff5e83dad43b4a3
Reviewed-on: https://boringssl-review.googlesource.com/21944
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-10-24 17:32:45 +00:00
David Benjamin
f6632dae5f Make all read errors idempotent.
Now that we've gotten everything, test this by just making bssl_shim run
all errors twice. The manual tests added to ssl_test.cc may now be
removed.

Bug: 206
Change-Id: Iefa0eae83ba59b476e6b6c6f0f921d5d1b72cbfb
Reviewed-on: https://boringssl-review.googlesource.com/21886
Commit-Queue: Steven Valdez <svaldez@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-17 21:28:51 +00:00
David Benjamin
a031b61230 Replace open_close_notify with open_app_data.
While a fairly small hook, open_close_notify is pretty weird. It
processes things at the record level and not above. Notably, this will
break if it skips past a TLS 1.3 KeyUpdate.

Instead, it can share the core part of SSL_read/SSL_peek, with slight
tweaks to post-handshake processing. Note this does require some tweaks
to that code. Notably, to retain the current semantics that SSL_shutdown
does not call funny callbacks, we suppress tickets.

Change-Id: Ia0cbd0b9f4527f1b091dd2083a5d8c7efb2bac65
Reviewed-on: https://boringssl-review.googlesource.com/21885
Commit-Queue: Steven Valdez <svaldez@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-17 21:19:31 +00:00
David Benjamin
d9229f9802 Lift BIO above SSL_PROTOCOL_METHOD.
This gets us closer to exposing BIO-free APIs. The next step is probably
to make the experimental bssl::OpenRecord function call a split out core
of ssl_read_impl.

Change-Id: I4acebb43f708df8c52eb4e328da8ae3551362fb9
Reviewed-on: https://boringssl-review.googlesource.com/21865
Commit-Queue: Steven Valdez <svaldez@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-17 19:53:52 +00:00
David Benjamin
31aad2dc2c Make low-level record errors idempotent.
Enough were to make record processing idempotent (we either consume a
record or we don't), but some errors would cause us to keep processing
records when we should get stuck.

This leaves errors in the layer between the record bits and the
handshake. I'm hoping that will be easier to resolve once they do not
depend on BIO, at which point the checks added in this CL may move
around.

Bug: 206
Change-Id: I6b177079388820335e25947c5bd736451780ab8f
Reviewed-on: https://boringssl-review.googlesource.com/21366
Commit-Queue: Steven Valdez <svaldez@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-17 16:05:41 +00:00
David Benjamin
40e94701dc Always process handshake records in full.
This removes the last place where non-app-data hooks leave anything
uncomsumed in rrec. (There is still a place where non-app-data hooks see
a non-empty rrec an entrance. read_app_data calls into read_handshake.
That'll be fixed in a later patch in this series.)

This should not change behavior, though some error codes may change due
to some processing happening in a slightly different order.

Since we do this in a few places, this adds a BUF_MEM_append with tests.

Change-Id: I9fe1fc0103e47f90e3c9f4acfe638927aecdeff6
Reviewed-on: https://boringssl-review.googlesource.com/21345
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-17 14:53:11 +00:00
David Benjamin
00f48c8273 Rename and move a few more ssl3_ functions around.
I think that's the last of the ssl3_ prefix being used for common
functions.

Change-Id: Id83e6f2065c3765931250bd074f6ebf1fc251696
Reviewed-on: https://boringssl-review.googlesource.com/21347
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-12 16:25:54 +00:00
David Benjamin
d1e3ce1fb0 Rename ssl3_send_alert and ssl3_protocol_version.
These are common between TLS and DTLS so should not have the ssl3_
prefix. (TLS-only stuff should really have a tls_ prefix, but we still
have a lot of that one.)

This also fixes a stray reference to ssl3_send_client_key_exchange..

Change-Id: Ia05b360aa090ab3b5f075d5f80f133cbfe0520d4
Reviewed-on: https://boringssl-review.googlesource.com/21346
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-12 16:24:35 +00:00
David Benjamin
7e58c5ef20 Switch more things to bools.
Change-Id: I11e3cf9be7757fcf1dd50ca8d6d449aa83edf71f
Reviewed-on: https://boringssl-review.googlesource.com/21604
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-10-11 20:22:43 +00:00
David Benjamin
23c25d5b3a Rename some things for consistency.
We usually use read/write rather than recv/send to describe the two
sides.

Change-Id: Ie3ac8c52c59ea9a5143f56b894f58cecd351dc7d
Reviewed-on: https://boringssl-review.googlesource.com/21304
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Steven Valdez <svaldez@google.com>
2017-10-10 15:39:07 +00:00
David Benjamin
c64d123933 Push Span down a layer.
Change-Id: I893292b140d033a5aed7e08f928a6c32996bb983
Reviewed-on: https://boringssl-review.googlesource.com/21287
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
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2017-10-10 14:27:58 +00:00
David Benjamin
f496249405 Switch int to bool in ssl_cipher.cc.
Change-Id: I815f9fa77e08f72b0130ea9ef0dda751bf2ed7a6
Reviewed-on: https://boringssl-review.googlesource.com/20826
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Martin Kreichgauer <martinkr@google.com>
2017-10-02 20:41:20 +00:00
David Benjamin
81f030b106 Switch OPENSSL_VERSION_NUMBER to 1.1.0.
Although we are derived from 1.0.2, we mimic 1.1.0 in some ways around
our FOO_up_ref functions and opaque libssl types. This causes some
difficulties when porting third-party code as any OPENSSL_VERSION_NUMBER
checks for 1.1.0 APIs we have will be wrong.

Moreover, adding accessors without changing OPENSSL_VERSION_NUMBER can
break external projects. It is common to implement a compatibility
version of an accessor under #ifdef as a static function. This then
conflicts with our headers if we, unlike OpenSSL 1.0.2, have this
function.

This change switches OPENSSL_VERSION_NUMBER to 1.1.0 and atomically adds
enough accessors for software with 1.1.0 support already. The hope is
this will unblock hiding SSL_CTX and SSL_SESSION, which will be
especially useful with C++-ficiation. The cost is we will hit some
growing pains as more 1.1.0 consumers enter the ecosystem and we
converge on the right set of APIs to import from upstream.

It does not remove any 1.0.2 APIs, so we will not require that all
projects support 1.1.0. The exception is APIs which changed in 1.1.0 but
did not change the function signature. Those are breaking changes.
Specifically:

- SSL_CTX_sess_set_get_cb is now const-correct.

- X509_get0_signature is now const-correct.

For C++ consumers only, this change temporarily includes an overload
hack for SSL_CTX_sess_set_get_cb that keeps the old callback working.
This is a workaround for Node not yet supporting OpenSSL 1.1.0.

The version number is set at (the as yet unreleased) 1.1.0g to denote
that this change includes https://github.com/openssl/openssl/pull/4384.

Bug: 91
Change-Id: I5eeb27448a6db4c25c244afac37f9604d9608a76
Reviewed-on: https://boringssl-review.googlesource.com/10340
Commit-Queue: David Benjamin <davidben@google.com>
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Reviewed-by: Adam Langley <agl@google.com>
2017-09-29 04:51:27 +00:00
David Benjamin
9eaa3bd55d Remove SSL_CTX_sessions and properly lock SSL_CTX_sess_number.
SSL_CTX_sessions is the only think making us expose LHASH as public API
and nothing uses it. Nothing can use it anyway as it's not thread-safe.
I haven't actually removed it yet since SSL_CTX is public, but once the
types are opaque, we could trim the number of symbols ssl.h pulls in
with some work.

Relatedly, fix thread safety of SSL_CTX_sess_number.

Change-Id: I75a6c93509d462cd5ed3ce76c587f0d1e7cd0797
Reviewed-on: https://boringssl-review.googlesource.com/20804
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
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2017-09-27 21:58:05 +00:00
David Benjamin
879efc3f3b Switch more things to Array.
This adds a CBBFinishArray helper since we need to do that fairly often.

Bug: 132
Change-Id: I7ec0720de0e6ea31caa90c316041bb5f66661cd3
Reviewed-on: https://boringssl-review.googlesource.com/20671
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-09-27 18:29:43 +00:00
David Benjamin
08f5c76898 Convert more things to Array.
This adds a CopyFrom companion to Init as a replacement for CBS_stow.

Bug: 132
Change-Id: I4d77291b07552bd2286a09f8ba33655d6d97c853
Reviewed-on: https://boringssl-review.googlesource.com/20670
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2017-09-27 18:02:23 +00:00
David Benjamin
a861460c89 Make SNI per-connection, not per-session.
Right now we report the per-connection value during the handshake and
the per-session value after the handshake. This also trims our tickets
slightly by removing a largely unused field from SSL_SESSION.

Putting it on SSL_HANDSHAKE would be better, but sadly a number of
bindings-type APIs expose it after the handshake.

Change-Id: I6a1383f95da9b1b141b9d6adadc05ee1e458a326
Reviewed-on: https://boringssl-review.googlesource.com/20064
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
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2017-09-06 20:25:26 +00:00
David Benjamin
74795b32c6 More miscellaneous bools.
Change-Id: I0960fed68ef39e4523ef9f2ba89ffa92f09c4dce
Reviewed-on: https://boringssl-review.googlesource.com/19945
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Commit-Queue: David Benjamin <davidben@google.com>
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2017-09-01 15:07:52 +00:00