5e7e7cc696
Alas, we will need a version fallback for TLS 1.3 again. This deprecates SSL_MODE_SEND_FALLBACK_SCSV. Rather than supplying a boolean, have BoringSSL be aware of the real maximum version so we can change the TLS 1.3 anti-downgrade logic to kick in, even when max_version is set to 1.2. The fallback version replaces the maximum version when it is set for almost all purposes, except for downgrade protection purposes. BUG=chromium:630165 Change-Id: I4c841dcbc6e55a282b223dfe169ac89c83c8a01f Reviewed-on: https://boringssl-review.googlesource.com/8882 Reviewed-by: David Benjamin <davidben@google.com> Commit-Queue: David Benjamin <davidben@google.com> |
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| .. | ||
| runner | ||
| async_bio.cc | ||
| async_bio.h | ||
| bssl_shim.cc | ||
| CMakeLists.txt | ||
| packeted_bio.cc | ||
| packeted_bio.h | ||
| README.md | ||
| scoped_types.h | ||
| test_config.cc | ||
| test_config.h | ||
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 theConfigandProtocolBugsstruct 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.