boringssl/ssl/test
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
..
runner Update QUIC transport parameters extension codepoint 2018-06-28 17:41:58 +00:00
async_bio.cc
async_bio.h
bssl_shim.cc Add bssl::UpRef. 2018-07-03 22:47:36 +00:00
CMakeLists.txt shim: move |SettingsWriter| into its own file. 2018-07-02 22:26:28 +00:00
fuzzer_tags.h Fuzz SSL_serialize_handoff() and SSL_serialize_handback(). 2018-05-05 02:41:04 +00:00
fuzzer.h Remove SSL 3.0 implementation. 2018-06-28 16:54:58 +00:00
packeted_bio.cc Remove support for blocking DTLS timeout handling. 2017-03-01 19:59:28 +00:00
packeted_bio.h Remove support for blocking DTLS timeout handling. 2017-03-01 19:59:28 +00:00
PORTING.md
README.md
settings_writer.cc shim: move |SettingsWriter| into its own file. 2018-07-02 22:26:28 +00:00
settings_writer.h shim: move |SettingsWriter| into its own file. 2018-07-02 22:26:28 +00:00
test_config.cc Remove SSL 3.0 implementation. 2018-06-28 16:54:58 +00:00
test_config.h Remove SSL 3.0 implementation. 2018-06-28 16:54:58 +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.