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Unified Diff: Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/sslutils/openssl.py

Issue 1154373005: Introduce WPTServe for running W3C Blink Layout tests (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Add executable bit to pass permchecks. Created 5 years, 6 months ago
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Index: Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/sslutils/openssl.py
diff --git a/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/sslutils/openssl.py b/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/sslutils/openssl.py
new file mode 100644
index 0000000000000000000000000000000000000000..5b571c0f116d591c6f6d40443b5cf9486a4ae36f
--- /dev/null
+++ b/Tools/Scripts/webkitpy/thirdparty/wpt/wpt/tools/sslutils/openssl.py
@@ -0,0 +1,401 @@
+import functools
+import os
+import shutil
+import subprocess
+import tempfile
+from datetime import datetime
+
+class OpenSSL(object):
+ def __init__(self, logger, binary, base_path, conf_path, hosts, duration,
+ base_conf_path=None):
+ """Context manager for interacting with OpenSSL.
+ Creates a config file for the duration of the context.
+
+ :param logger: stdlib logger or python structured logger
+ :param binary: path to openssl binary
+ :param base_path: path to directory for storing certificates
+ :param conf_path: path for configuration file storing configuration data
+ :param hosts: list of hosts to include in configuration (or None if not
+ generating host certificates)
+ :param duration: Certificate duration in days"""
+
+ self.base_path = base_path
+ self.binary = binary
+ self.conf_path = conf_path
+ self.base_conf_path = base_conf_path
+ self.logger = logger
+ self.proc = None
+ self.cmd = []
+ self.hosts = hosts
+ self.duration = duration
+
+ def __enter__(self):
+ with open(self.conf_path, "w") as f:
+ f.write(get_config(self.base_path, self.hosts, self.duration))
+ return self
+
+ def __exit__(self, *args, **kwargs):
+ os.unlink(self.conf_path)
+
+ def log(self, line):
+ if hasattr(self.logger, "process_output"):
+ self.logger.process_output(self.proc.pid if self.proc is not None else None,
+ line.decode("utf8", "replace"),
+ command=" ".join(self.cmd))
+ else:
+ self.logger.debug(line)
+
+ def __call__(self, cmd, *args, **kwargs):
+ """Run a command using OpenSSL in the current context.
+
+ :param cmd: The openssl subcommand to run
+ :param *args: Additional arguments to pass to the command
+ """
+ self.cmd = [self.binary, cmd]
+ if cmd != "x509":
+ self.cmd += ["-config", self.conf_path]
+ self.cmd += list(args)
+
+ env = os.environ.copy()
+ if self.base_conf_path is not None:
+ env["OPENSSL_CONF"] = self.base_conf_path.encode("utf8")
+
+ self.proc = subprocess.Popen(self.cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+ env=env)
+ stdout, stderr = self.proc.communicate()
+ self.log(stdout)
+ if self.proc.returncode != 0:
+ raise subprocess.CalledProcessError(self.proc.returncode, self.cmd,
+ output=stdout)
+
+ self.cmd = []
+ self.proc = None
+ return stdout
+
+
+def make_subject(common_name,
+ country=None,
+ state=None,
+ locality=None,
+ organization=None,
+ organization_unit=None):
+ args = [("country", "C"),
+ ("state", "ST"),
+ ("locality", "L"),
+ ("organization", "O"),
+ ("organization_unit", "OU"),
+ ("common_name", "CN")]
+
+ rv = []
+
+ for var, key in args:
+ value = locals()[var]
+ if value is not None:
+ rv.append("/%s=%s" % (key, value.replace("/", "\\/")))
+
+ return "".join(rv)
+
+def make_alt_names(hosts):
+ rv = []
+ for name in hosts:
+ rv.append("DNS:%s" % name)
+ return ",".join(rv)
+
+def get_config(root_dir, hosts, duration=30):
+ if hosts is None:
+ san_line = ""
+ else:
+ san_line = "subjectAltName = %s" % make_alt_names(hosts)
+
+ if os.path.sep == "\\":
+ # This seems to be needed for the Shining Light OpenSSL on
+ # Windows, at least.
+ root_dir = root_dir.replace("\\", "\\\\")
+
+ rv = """[ ca ]
+default_ca = CA_default
+
+[ CA_default ]
+dir = %(root_dir)s
+certs = $dir
+new_certs_dir = $certs
+crl_dir = $dir%(sep)scrl
+database = $dir%(sep)sindex.txt
+private_key = $dir%(sep)scakey.pem
+certificate = $dir%(sep)scacert.pem
+serial = $dir%(sep)sserial
+crldir = $dir%(sep)scrl
+crlnumber = $dir%(sep)scrlnumber
+crl = $crldir%(sep)scrl.pem
+RANDFILE = $dir%(sep)sprivate%(sep)s.rand
+x509_extensions = usr_cert
+name_opt = ca_default
+cert_opt = ca_default
+default_days = %(duration)d
+default_crl_days = %(duration)d
+default_md = sha256
+preserve = no
+policy = policy_anything
+copy_extensions = copy
+
+[ policy_anything ]
+countryName = optional
+stateOrProvinceName = optional
+localityName = optional
+organizationName = optional
+organizationalUnitName = optional
+commonName = supplied
+emailAddress = optional
+
+[ req ]
+default_bits = 2048
+default_keyfile = privkey.pem
+distinguished_name = req_distinguished_name
+attributes = req_attributes
+x509_extensions = v3_ca
+
+# Passwords for private keys if not present they will be prompted for
+# input_password = secret
+# output_password = secret
+string_mask = utf8only
+req_extensions = v3_req
+
+[ req_distinguished_name ]
+countryName = Country Name (2 letter code)
+countryName_default = AU
+countryName_min = 2
+countryName_max = 2
+stateOrProvinceName = State or Province Name (full name)
+stateOrProvinceName_default =
+localityName = Locality Name (eg, city)
+0.organizationName = Organization Name
+0.organizationName_default = Web Platform Tests
+organizationalUnitName = Organizational Unit Name (eg, section)
+#organizationalUnitName_default =
+commonName = Common Name (e.g. server FQDN or YOUR name)
+commonName_max = 64
+emailAddress = Email Address
+emailAddress_max = 64
+
+[ req_attributes ]
+
+[ usr_cert ]
+basicConstraints=CA:false
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid,issuer
+
+[ v3_req ]
+basicConstraints = CA:FALSE
+keyUsage = nonRepudiation, digitalSignature, keyEncipherment
+extendedKeyUsage = serverAuth
+%(san_line)s
+
+[ v3_ca ]
+basicConstraints = CA:true
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid:always,issuer:always
+keyUsage = keyCertSign
+""" % {"root_dir": root_dir,
+ "san_line": san_line,
+ "duration": duration,
+ "sep": os.path.sep.replace("\\", "\\\\")}
+
+ return rv
+
+class OpenSSLEnvironment(object):
+ ssl_enabled = True
+
+ def __init__(self, logger, openssl_binary="openssl", base_path=None,
+ password="web-platform-tests", force_regenerate=False,
+ duration=30, base_conf_path=None):
+ """SSL environment that creates a local CA and host certificate using OpenSSL.
+
+ By default this will look in base_path for existing certificates that are still
+ valid and only create new certificates if there aren't any. This behaviour can
+ be adjusted using the force_regenerate option.
+
+ :param logger: a stdlib logging compatible logger or mozlog structured logger
+ :param openssl_binary: Path to the OpenSSL binary
+ :param base_path: Path in which certificates will be stored. If None, a temporary
+ directory will be used and removed when the server shuts down
+ :param password: Password to use
+ :param force_regenerate: Always create a new certificate even if one already exists.
+ """
+ self.logger = logger
+
+ self.temporary = False
+ if base_path is None:
+ base_path = tempfile.mkdtemp()
+ self.temporary = True
+
+ self.base_path = os.path.abspath(base_path)
+ self.password = password
+ self.force_regenerate = force_regenerate
+ self.duration = duration
+ self.base_conf_path = base_conf_path
+
+ self.path = None
+ self.binary = openssl_binary
+ self.openssl = None
+
+ self._ca_cert_path = None
+ self._ca_key_path = None
+ self.host_certificates = {}
+
+ def __enter__(self):
+ if not os.path.exists(self.base_path):
+ os.makedirs(self.base_path)
+
+ path = functools.partial(os.path.join, self.base_path)
+
+ with open(path("index.txt"), "w"):
+ pass
+ with open(path("serial"), "w") as f:
+ f.write("01")
+
+ self.path = path
+
+ return self
+
+ def __exit__(self, *args, **kwargs):
+ if self.temporary:
+ shutil.rmtree(self.base_path)
+
+ def _config_openssl(self, hosts):
+ conf_path = self.path("openssl.cfg")
+ return OpenSSL(self.logger, self.binary, self.base_path, conf_path, hosts,
+ self.duration, self.base_conf_path)
+
+ def ca_cert_path(self):
+ """Get the path to the CA certificate file, generating a
+ new one if needed"""
+ if self._ca_cert_path is None and not self.force_regenerate:
+ self._load_ca_cert()
+ if self._ca_cert_path is None:
+ self._generate_ca()
+ return self._ca_cert_path
+
+ def _load_ca_cert(self):
+ key_path = self.path("cakey.pem")
+ cert_path = self.path("cacert.pem")
+
+ if self.check_key_cert(key_path, cert_path, None):
+ self.logger.info("Using existing CA cert")
+ self._ca_key_path, self._ca_cert_path = key_path, cert_path
+
+ def check_key_cert(self, key_path, cert_path, hosts):
+ """Check that a key and cert file exist and are valid"""
+ if not os.path.exists(key_path) or not os.path.exists(cert_path):
+ return False
+
+ with self._config_openssl(hosts) as openssl:
+ end_date_str = openssl("x509",
+ "-noout",
+ "-enddate",
+ "-in", cert_path).split("=", 1)[1].strip()
+ # Not sure if this works in other locales
+ end_date = datetime.strptime(end_date_str, "%b %d %H:%M:%S %Y %Z")
+ # Should have some buffer here e.g. 1 hr
+ if end_date < datetime.now():
+ return False
+
+ #TODO: check the key actually signed the cert.
+ return True
+
+ def _generate_ca(self):
+ path = self.path
+ self.logger.info("Generating new CA in %s" % self.base_path)
+
+ key_path = path("cakey.pem")
+ req_path = path("careq.pem")
+ cert_path = path("cacert.pem")
+
+ with self._config_openssl(None) as openssl:
+ openssl("req",
+ "-batch",
+ "-new",
+ "-newkey", "rsa:2048",
+ "-keyout", key_path,
+ "-out", req_path,
+ "-subj", make_subject("web-platform-tests"),
+ "-passout", "pass:%s" % self.password)
+
+ openssl("ca",
+ "-batch",
+ "-create_serial",
+ "-keyfile", key_path,
+ "-passin", "pass:%s" % self.password,
+ "-selfsign",
+ "-extensions", "v3_ca",
+ "-in", req_path,
+ "-out", cert_path)
+
+ os.unlink(req_path)
+
+ self._ca_key_path, self._ca_cert_path = key_path, cert_path
+
+ def host_cert_path(self, hosts):
+ """Get a tuple of (private key path, certificate path) for a host,
+ generating new ones if necessary.
+
+ hosts must be a list of all hosts to appear on the certificate, with
+ the primary hostname first."""
+ hosts = tuple(hosts)
+ if hosts not in self.host_certificates:
+ if not self.force_regenerate:
+ key_cert = self._load_host_cert(hosts)
+ else:
+ key_cert = None
+ if key_cert is None:
+ key, cert = self._generate_host_cert(hosts)
+ else:
+ key, cert = key_cert
+ self.host_certificates[hosts] = key, cert
+
+ return self.host_certificates[hosts]
+
+ def _load_host_cert(self, hosts):
+ host = hosts[0]
+ key_path = self.path("%s.key" % host)
+ cert_path = self.path("%s.pem" % host)
+
+ # TODO: check that this cert was signed by the CA cert
+ if self.check_key_cert(key_path, cert_path, hosts):
+ self.logger.info("Using existing host cert")
+ return key_path, cert_path
+
+ def _generate_host_cert(self, hosts):
+ host = hosts[0]
+ if self._ca_key_path is None:
+ self._generate_ca()
+ ca_key_path = self._ca_key_path
+
+ assert os.path.exists(ca_key_path)
+
+ path = self.path
+
+ req_path = path("wpt.req")
+ cert_path = path("%s.pem" % host)
+ key_path = path("%s.key" % host)
+
+ self.logger.info("Generating new host cert")
+
+ with self._config_openssl(hosts) as openssl:
+ openssl("req",
+ "-batch",
+ "-newkey", "rsa:2048",
+ "-keyout", key_path,
+ "-in", ca_key_path,
+ "-nodes",
+ "-out", req_path)
+
+ openssl("ca",
+ "-batch",
+ "-in", req_path,
+ "-passin", "pass:%s" % self.password,
+ "-subj", make_subject(host),
+ "-out", cert_path)
+
+ os.unlink(req_path)
+
+ return key_path, cert_path

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