boringssl/ssl/test
David Benjamin 2c66e079ab Don't send the access_denied alert innappropriately.
access_denied is only used to indicate client cert errors and Chrome
maps it to ERR_SSL_BAD_CLIENT_AUTH_CERT accordingly:

   access_denied
      A valid certificate was received, but when access control was
      applied, the sender decided not to proceed with negotiation.  This
      message is always fatal.

We don't appear to be the cause of Chrome's recent
ERR_SSL_BAD_CLIENT_AUTH_CERT spike, but we should send these correctly
nonetheless.

If the early callback fails, handshake_failure seems the most
appropriate ("I was unable to find suitable parameters"). There isn't
really an alert that matches DoS, but internal_error seems okay?

   internal_error
      An internal error unrelated to the peer or the correctness of the
      protocol (such as a memory allocation failure) makes it impossible
      to continue.  This message is always fatal.

There's nothing wrong, per se, with your ClientHello, but I just can't
deal with it right now. Please go away.

Change-Id: Icd1c998c09dc42daa4b309c1a4a0f136b85eb69d
Reviewed-on: https://boringssl-review.googlesource.com/11084
Commit-Queue: David Benjamin <davidben@google.com>
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>
2016-09-16 20:12:09 +00:00
..
runner Don't send the access_denied alert innappropriately. 2016-09-16 20:12:09 +00:00
async_bio.cc Replace Scoped* heap types with bssl::UniquePtr. 2016-09-01 22:22:54 +00:00
async_bio.h Replace Scoped* heap types with bssl::UniquePtr. 2016-09-01 22:22:54 +00:00
bssl_shim.cc Fold stack-allocated types into headers. 2016-09-07 21:50:05 +00:00
CMakeLists.txt Add malloc test support to unit tests. 2015-05-21 17:59:48 +00:00
packeted_bio.cc Replace Scoped* heap types with bssl::UniquePtr. 2016-09-01 22:22:54 +00:00
packeted_bio.h Replace Scoped* heap types with bssl::UniquePtr. 2016-09-01 22:22:54 +00:00
PORTING.md Fix typo. 2016-08-16 18:05:47 +00:00
README.md Adding PORTING.md for instructions on how to port the test runner 2016-08-16 17:53:28 +00:00
test_config.cc Test resuming renewed sessions. 2016-08-18 23:53:19 +00:00
test_config.h Test resuming renewed sessions. 2016-08-18 23:53:19 +00:00

BoringSSL SSL Tests

This directory contains BoringSSL's protocol-level test suite.

Testing a TLS implementation can be difficult. We need to produce invalid but sufficiently correct handshakes to get our implementation close to its edge cases. TLS's cryptographic steps mean we cannot use a transcript and effectively need a TLS implementation on the other end. But we do not wish to litter BoringSSL with options for bugs to test against.

Instead, we use a fork of the Go crypto/tls package, heavily patched with configurable bugs. This code, along with a test suite and harness written in Go, lives in the runner directory. The harness runs BoringSSL via a C/C++ shim binary which lives in this directory. All communication with the shim binary occurs with command-line flags, sockets, and standard I/O.

This strategy also ensures we always test against a second implementation. All features should be implemented twice, once in C for BoringSSL and once in Go for testing. If possible, the Go code should be suitable for potentially upstreaming. However, sometimes test code has different needs. For example, our test DTLS code enforces strict ordering on sequence numbers and has controlled packet drop simulation.

To run the tests manually, run go test from the runner directory. It takes command-line flags found at the top of runner/runner.go. The -help option also works after using go test -c to make a runner.test binary first.

If adding a new test, these files may be a good starting point:

  • runner/runner.go: the test harness and all the individual tests.
  • runner/common.go: contains the Config and ProtocolBugs struct which control the Go TLS implementation's behavior.
  • test_config.h, test_config.cc: the command-line flags which control the shim's behavior.
  • bssl_shim.cc: the shim binary itself.

For porting the test suite to a different implementation see PORTING.md.