ssl23_get_client_hello has lots of remnants of SSLv2 support and remnants of an
even older SSL_OP_NON_EXPORT_FIRST option (see upstream's
d92f0bb6e9ed94ac0c3aa0c939f2565f2ed95935) which complicates the logic.
Split it into three states and move V2ClientHello parsing into its own
function. Port it to CBS and CBB to give bounds checks on the V2ClientHello
parse.
This fixes a minor bug where, if the SSL_accept call in ssl23_get_client_hello
failed, cb would not be NULL'd and SSL_CB_ACCEPT_LOOP would get reported an
extra time.
It also unbreaks the invariant between s->packet, s->packet_length,
s->s3->rbuf.buf, and s->s3->rbuf.offset at the point the switch, although this
was of no consequence because the first ssl3_read_n call passes extend = 0
which resets s->packet and s->packet_length.
It also makes us tolerant to major version bumps in the ClientHello. Add tests
for TLS tolerance of both minor and major version bumps as well as the HTTP
request error codes.
Change-Id: I948337f4dc483f4ebe1742d3eba53b045b260257
Reviewed-on: https://boringssl-review.googlesource.com/1455
Reviewed-by: Adam Langley <agl@google.com>
Assert that inappropriate fallbacks are detected, but if the client_version
matches the server's highest version, do not abort the handshake.
Change-Id: I9d72570bce45e1eb23fc2b74a3c5fca10562e573
Reviewed-on: https://boringssl-review.googlesource.com/1373
Reviewed-by: Adam Langley <agl@google.com>
Should have test coverage there as long as we care about supporting it.
Change-Id: Ic67539228b550f2ebd0b543d5a58640913b0474b
Reviewed-on: https://boringssl-review.googlesource.com/1371
Reviewed-by: Adam Langley <agl@google.com>
Now that the flag is set accurately, use it to enforce that the handshake and
CCS synchronization. If EXPECT_CCS is set, enforce that:
(a) No handshake records may be received before ChangeCipherSpec.
(b) There is no pending handshake data at the point EXPECT_CCS is set.
Change-Id: I04b228fe6a7a771cf6600b7d38aa762b2d553f08
Reviewed-on: https://boringssl-review.googlesource.com/1299
Reviewed-by: Adam Langley <agl@google.com>
This change can probably be ported over to upstream crypto/tls. The current Go
TLS implementation ignores the signature and hash algorithm lists in
CertificateVerify and CertificateRequest. Take these into account so that our
tests assert OpenSSL fills them out correctly.
Also fix a bug in the original code where 'err' within the switch block get
shadowed.
Change-Id: I5d9c0b31ebb4662ecc767ed885a20707f0e86216
Reviewed-on: https://boringssl-review.googlesource.com/1253
Reviewed-by: Adam Langley <agl@google.com>
They pass, but this is an error case that is probably worth a test.
Change-Id: I37b2eec34a1781fa8342eea57ee4f9da81ce17ed
Reviewed-on: https://boringssl-review.googlesource.com/1257
Reviewed-by: Adam Langley <agl@google.com>
ClientHello and ServerHello are not allowed to include duplicate extensions.
Add a new helper function to check this and call as appropriate. Remove ad-hoc
per-extension duplicate checks which are no unnecessary.
Add runner.go tests to verify such message correctly rejected.
Change-Id: I7babd5b642dfec941459512869e2dd6de26a831c
Reviewed-on: https://boringssl-review.googlesource.com/1100
Reviewed-by: Adam Langley <agl@google.com>
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).
(This change contains substantial changes from the original and
effectively starts a new history.)
