3 SSL testcases are configured in the `ssl-tests` directory.
5 Each `ssl_*.conf.in` file contains a number of test configurations. These files
6 are used to generate testcases in the OpenSSL CONF format.
8 The precise test output can be dependent on the library configuration. The test
9 harness generates the output files on the fly.
11 However, for verification, we also include checked-in configuration outputs
12 corresponding to the default configuration. These testcases live in
13 `test/ssl-tests/*.conf` files.
15 For more details, see `ssl-tests/01-simple.conf.in` for an example.
17 ## Configuring the test
19 First, give your test a name. The names do not have to be unique.
21 An example test input looks like this:
25 name => "test-default",
26 server => { "CipherString" => "DEFAULT" },
27 client => { "CipherString" => "DEFAULT" },
28 test => { "ExpectedResult" => "Success" },
32 The test section supports the following options
36 * Method - the method to test. One of DTLS or TLS.
38 * HandshakeMode - which handshake flavour to test:
39 - Simple - plain handshake (default)
40 - Resume - test resumption
41 - RenegotiateServer - test server initiated renegotiation
42 - RenegotiateClient - test client initiated renegotiation
44 When HandshakeMode is Resume or Renegotiate, the original handshake is expected
45 to succeed. All configured test expectations are verified against the second
48 * ApplicationData - amount of application data bytes to send (integer, defaults
49 to 256 bytes). Applies to both client and server. Application data is sent in
50 64kB chunks (but limited by MaxFragmentSize and available parallelization, see
53 * MaxFragmentSize - maximum send fragment size (integer, defaults to 512 in
54 tests - see `SSL_CTX_set_max_send_fragment` for documentation). Applies to
55 both client and server. Lowering the fragment size will split handshake and
56 application data up between more `SSL_write` calls, thus allowing to exercise
57 different code paths. In particular, if the buffer size (64kB) is at least
58 four times as large as the maximum fragment, interleaved multi-buffer crypto
59 implementations may be used on some platforms.
63 * ExpectedResult - expected handshake outcome. One of
64 - Success - handshake success
65 - ServerFail - serverside handshake failure
66 - ClientFail - clientside handshake failure
67 - InternalError - some other error
69 * ExpectedClientAlert, ExpectedServerAlert - expected alert. See
70 `ssl_test_ctx.c` for known values. Note: the expected alert is currently
71 matched against the _last_ received alert (i.e., a fatal alert or a
72 `close_notify`). Warning alert expectations are not yet supported. (A warning
73 alert will not be correctly matched, if followed by a `close_notify` or
76 * ExpectedProtocol - expected negotiated protocol. One of
77 SSLv3, TLSv1, TLSv1.1, TLSv1.2.
79 * SessionTicketExpected - whether or not a session ticket is expected
80 - Ignore - do not check for a session ticket (default)
81 - Yes - a session ticket is expected
82 - No - a session ticket is not expected
84 * ResumptionExpected - whether or not resumption is expected (Resume mode only)
85 - Yes - resumed handshake
86 - No - full handshake (default)
88 * ExpectedNPNProtocol, ExpectedALPNProtocol - NPN and ALPN expectations.
90 * ExpectedTmpKeyType - the expected algorithm or curve of server temp key
92 ## Configuring the client and server
94 The client and server configurations can be any valid `SSL_CTX`
95 configurations. For details, see the manpages for `SSL_CONF_cmd`.
97 Give your configurations as a dictionary of CONF commands, e.g.
101 "CipherString" => "DEFAULT",
102 "MinProtocol" => "TLSv1",
106 The following sections may optionally be defined:
108 * server2 - this section configures a secondary context that is selected via the
109 ServerName test option. This context is used whenever a ServerNameCallback is
110 specified. If the server2 section is not present, then the configuration
112 * resume_server - this section configures the client to resume its session
113 against a different server. This context is used whenever HandshakeMode is
114 Resume. If the resume_server section is not present, then the configuration
116 * resume_client - this section configures the client to resume its session with
117 a different configuration. In practice this may occur when, for example,
118 upgraded clients reuse sessions persisted on disk. This context is used
119 whenever HandshakeMode is Resume. If the resume_client section is not present,
120 then the configuration matches client.
122 ### Configuring callbacks and additional options
124 Additional handshake settings can be configured in the `extra` section of each
129 "CipherString" => "DEFAULT",
131 "ServerName" => "server2",
136 #### Supported client-side options
138 * ClientVerifyCallback - the client's custom certificate verify callback.
139 Used to test callback behaviour. One of
140 - None - no custom callback (default)
141 - AcceptAll - accepts all certificates.
142 - RejectAll - rejects all certificates.
144 * ServerName - the server the client should attempt to connect to. One of
145 - None - do not use SNI (default)
146 - server1 - the initial context
147 - server2 - the secondary context
148 - invalid - an unknown context
150 * CTValidation - Certificate Transparency validation strategy. One of
151 - None - no validation (default)
152 - Permissive - SSL_CT_VALIDATION_PERMISSIVE
153 - Strict - SSL_CT_VALIDATION_STRICT
155 #### Supported server-side options
157 * ServerNameCallback - the SNI switching callback to use
158 - None - no callback (default)
159 - IgnoreMismatch - continue the handshake on SNI mismatch
160 - RejectMismatch - abort the handshake on SNI mismatch
162 * BrokenSessionTicket - a special test case where the session ticket callback
163 does not initialize crypto.
167 #### Mutually supported options
169 * NPNProtocols, ALPNProtocols - NPN and ALPN settings. Server and client
170 protocols can be specified as a comma-separated list, and a callback with the
171 recommended behaviour will be installed automatically.
173 ### Default server and client configurations
175 The default server certificate and CA files are added to the configurations
176 automatically. Server certificate verification is requested by default.
178 You can override these options by redefining them:
182 "VerifyCAFile" => "/path/to/custom/file"
190 "VerifyCAFile" => undef
194 ## Adding a test to the test harness
196 1. Add a new test configuration to `test/ssl-tests`, following the examples of
197 existing `*.conf.in` files (for example, `01-simple.conf.in`).
199 2. Generate the generated `*.conf` test input file. You can do so by running
200 `generate_ssl_tests.pl`:
205 $ TOP=.. perl -I testlib/ generate_ssl_tests.pl ssl-tests/my.conf.in \
209 where `my.conf.in` is your test input file.
211 For example, to generate the test cases in `ssl-tests/01-simple.conf.in`, do
214 $ TOP=.. perl -I testlib/ generate_ssl_tests.pl ssl-tests/01-simple.conf.in > ssl-tests/01-simple.conf
217 Alternatively (hackish but simple), you can comment out
220 unlink glob $tmp_file;
223 in `test/recipes/80-test_ssl_new.t` and run
226 $ make TESTS=test_ssl_new test
229 This will save the generated output in a `*.tmp` file in the build directory.
231 3. Update the number of tests planned in `test/recipes/80-test_ssl_new.t`. If
232 the test suite has any skip conditions, update those too (see
233 `test/recipes/80-test_ssl_new.t` for details).
235 ## Running the tests with the test harness
238 HARNESS_VERBOSE=yes make TESTS=test_ssl_new test
241 ## Running a test manually
243 These steps are only needed during development. End users should run `make test`
244 or follow the instructions above to run the SSL test suite.
246 To run an SSL test manually from the command line, the `TEST_CERTS_DIR`
247 environment variable to point to the location of the certs. E.g., from the root
248 OpenSSL directory, do
251 $ CTLOG_FILE=test/ct/log_list.conf TEST_CERTS_DIR=test/certs test/ssl_test \
252 test/ssl-tests/01-simple.conf
258 $ CTLOG_FILE=test/ct/log_list.conf TEST_CERTS_DIR=test/certs \
259 util/shlib_wrap.sh test/ssl_test test/ssl-tests/01-simple.conf
262 Note that the test expectations sometimes depend on the Configure settings. For
263 example, the negotiated protocol depends on the set of available (enabled)
264 protocols: a build with `enable-ssl3` has different test expectations than a
265 build with `no-ssl3`.
267 The Perl test harness automatically generates expected outputs, so users who
268 just run `make test` do not need any extra steps.
270 However, when running a test manually, keep in mind that the repository version
271 of the generated `test/ssl-tests/*.conf` correspond to expected outputs in with
272 the default Configure options. To run `ssl_test` manually from the command line
273 in a build with a different configuration, you may need to generate the right
274 `*.conf` file from the `*.conf.in` input first.