This reverts commit 75d43b5785. Chatting
with EKR, there is some reason to believe that doing this might cause
more middlebox issues. Since we're still in the middle of working
towards viable deployment in the first place, revert this.
We can experiment with this later. I should have arranged for this to be
controlled more carefully anyway.
Change-Id: I0c8bf578f9d7364e913894e1bf3c2b8123dfd770
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We never implemented psk_ke, so there's no need to define the constant.
Change-Id: I6e52596e1a2cf0b3db5e7cd96db6836f4290bf0b
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This does not affect TLS 1.2 (beyond Channel ID or NPN) but, in TLS 1.3,
we send several encrypted handshake messages in a row. For the server,
this means 66 wasted bytes in TLS 1.3. Since OpenSSL has otherwise used
one record per message since the beginning and unencrypted overhead is
less interesting, leave that behavior as-is for the time being. (This
isn't the most pressing use of the breakage budget.) But TLS 1.3 is new,
so get this tight from the start.
Change-Id: I64dbd590a62469d296e1f10673c14bcd0c62919a
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We enforce that servers don't send bogus ALPN values, so consumers may
assume that SSL_get0_alpn_selected won't have anything terribly weird.
To maintain that invariant in the face of folks whose ALPN preferences
change (consider a persisted session cache), we should decline to offer
0-RTT if early_alpn would have been rejected by the check anyway.
Change-Id: Ic3a9ba4041d5d4618742eb05e27033525d96ade1
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This is in preparation for giving DTLS_STATE one.
Change-Id: I3dfeeaad2d20c547d8e65d739bd0ad5bc1acf74a
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new_*_len can just be computed rather than maintained as state.
Change-Id: If097ee9e68d8791fcfeb69052151faf0134c7c52
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This finally clears most of the SSL_clear special-cases.
Change-Id: I00fc240ccbf13f4290322845f585ca6f5786ad80
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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
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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
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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
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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
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With this change, it should now always be the case that rr->length is
zero on entry to ssl3_read_message. This will let us detach everything
but application data from rr. This pushes some init_buf invariants down
into tls_open_record so we don't need to maintain them everywhere.
Change-Id: I206747434e0a9603eea7d19664734fd16fa2de8e
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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
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Ultimately the ssl_buffer_* code will be above SSL_PROTOCOL_METHOD, so
having the processing be analogous is simpler. This also means that DTLS
can surface errors out of dtls_open_record without the caller reading an
extra record.
Bug: 206
Change-Id: Ic1cb3a884763c8e875e1129b1cda226f72bc95b7
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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
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I think that's the last of the ssl3_ prefix being used for common
functions.
Change-Id: Id83e6f2065c3765931250bd074f6ebf1fc251696
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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
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It's no longer needed in the public header at all, now that we've hidden
the SSL_CTX struct.
Change-Id: I2fc6ddbeb52f000487627b433b9cdd7a4cde37a8
Reviewed-on: https://boringssl-review.googlesource.com/21684
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This frees us up to make SSL_CTX a C++ type and avoids a lot of
protrusions of otherwise private types into the global namespace.
Bug: 6
Change-Id: I8a0624a53a4d26ac4a483fa270c39ecdd07459ee
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On some Chrome builds on Windows (including the official builds that we
ship) there are dynamic initializers for kNamedGroups in chrome.dll and
chrome_child.dll. Tagging this array with constexpr is guaranteed to
avoid this.
Bug: chromium:341941
Change-Id: I0e4ea0665b8ed9640b76b709dd300416be49e59e
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We usually use read/write rather than recv/send to describe the two
sides.
Change-Id: Ie3ac8c52c59ea9a5143f56b894f58cecd351dc7d
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The only difference is whether there's an alert to send back, but we'll
need to allow an "error without alert" in several cases anyway:
1. If the server sees an HTTP request or garbage instead of a
ClientHello, it shouldn't send an alert.
2. Resurfaced errors.
Just make zero signal no alert for now. Later on, I'm thinking we might
just want to put the alert into the outgoing buffer and make it further
uniform.
This also gives us only one error state to keep track of rather than
two.
Bug: 206
Change-Id: Ia821d9f89abd2ca6010e8851220d4e070bc42fa1
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This is analogous to the Go stack's handshakeErr field. Since it's quite
common for callers to run two I/O operations in parallel[*] like
SSL_read and SSL_write (or SSL_read and SSL_do_handshake for client
0-RTT). Accordingly, the new handshake state machine jams itself up on
handshake error, but to fully work with such callers, we should also
replay the error state.
This doesn't yet catch all cases (there are some parts of the read flow
which need to be fixed). Those will be resolved in later changes.
[*] Not actually in parallel, of course, but logically in parallel on a
non-blocking socket.
Bug: 206
Change-Id: I5a4d37a258b9e3fc555b732938b0528b839650f8
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Change-Id: I815f9fa77e08f72b0130ea9ef0dda751bf2ed7a6
Reviewed-on: https://boringssl-review.googlesource.com/20826
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Bug: 132
Change-Id: I1d6cd1dd7470a3f64ec91b954042ed3f8c6b561e
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This roughly aligns with absl::Span<T>::subspan.
Bug: 132
Change-Id: Iaf29418c1b10e2d357763dec90b6cb1371b86c3b
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The function has exactly one caller. Also add some comments.
Change-Id: I1566aed625449c91f25a777f5a4232d236019ed7
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Bug: 132
Change-Id: I710dbd4906bb7a8b971831be0121df5b78e4f9e0
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This adds a CBBFinishArray helper since we need to do that fairly often.
Bug: 132
Change-Id: I7ec0720de0e6ea31caa90c316041bb5f66661cd3
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This adds a CopyFrom companion to Init as a replacement for CBS_stow.
Bug: 132
Change-Id: I4d77291b07552bd2286a09f8ba33655d6d97c853
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There seems to be a GCC bug that requires kDefaultGroups having an
explicit cast, but this is still much nicer than void(const uint16_t **,
size_t *) functions.
Bug: 132
Change-Id: Id586d402ca0b8a01370353ff17295e71ee219ff3
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An Array<T> is an owning Span<T>. It's similar to absl::FixedArray<T>
but plays well with OPENSSL_malloc and doesn't implement inlining. With
OPENSSL_cleanse folded into OPENSSL_free, we could go nuts with
UniquePtr<uint8_t>, but having the pointer and length tied together is
nice for other reasons. Notably, Array<T> plays great with Span<T>.
Also switch the other parameter to a Span.
Bug: 132
Change-Id: I4cdcf810cf2838208c8ba9fcc6215c1e369dffb8
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Rather than use those weird bitmasks, just pass an evp_aead_direction_t
and figure it out from there.
Change-Id: Ie52c6404bd0728d7d1ef964a3590d9ba0843c1d6
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Fixes failed compile with [-Werror=implicit-fallthrough=], which is
default on gcc-7.x on distributions like fedora.
Enabling no implicit fallthrough for more than just clang as well to
catch this going forward.
Change-Id: I6cd880dac70ec126bd7812e2d9e5ff804d32cadd
Signed-off-by: Vincent Batts <vbatts@redhat.com>
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Commit-Queue: David Benjamin <davidben@google.com>
The Java client implementation of the 3SHAKE mitigation incorrectly
rejects initial handshakes when all of the following are true:
1. The ClientHello offered a session.
2. The session was successfully resumed previously.
3. The server declines the session.
4. The server sends a certificate with a different SAN list than in the
previous session.
(Note the 3SHAKE mitigation is to reject certificates changes on
renegotiation, while Java's logic applies to initial handshakes as
well.)
The end result is long-lived Java clients break on some certificate
rotations. Fingerprint Java clients and decline all offered sessions.
This avoids (2) while still introducing new sessions to clear any
existing problematic sessions.
See also b/65323005.
Change-Id: Ib2b84c69b5ecba285ffb8c4d03de5626838d794e
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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
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