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1287 lines (1088 loc) · 52.6 KB
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information.
#if FEATURE_FULL_NET
using System;
using System.Buffers;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net.Security;
using System.Net.Sockets;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Security.Authentication;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using IronPython.Runtime;
using IronPython.Runtime.Exceptions;
using IronPython.Runtime.Operations;
using IronPython.Runtime.Types;
using Microsoft.Scripting.Runtime;
using Microsoft.Scripting.Utils;
[assembly: PythonModule("_ssl", typeof(IronPython.Modules.PythonSsl))]
namespace IronPython.Modules {
internal class Asn1Object {
public Asn1Object(string shortName, string longName, int nid, byte[] oid) {
ShortName = shortName;
LongName = longName;
NID = nid;
OID = oid;
OIDString = string.Join(".", OID);
}
public string ShortName {
get; set;
}
public string LongName {
get; set;
}
public int NID {
get; set;
}
public byte[] OID {
get; set;
}
public string OIDString {
get;
}
public PythonTuple ToTuple() {
return PythonTuple.MakeTuple(NID, ShortName, LongName, OIDString);
}
}
public static class PythonSsl {
public const string __doc__ = "Implementation module for SSL socket operations. See the socket module\nfor documentation.";
public const int OPENSSL_VERSION_NUMBER = 9437184;
public static readonly PythonTuple OPENSSL_VERSION_INFO = PythonTuple.MakeTuple(0, 0, 0, 0, 0);
public static readonly object _OPENSSL_API_VERSION = OPENSSL_VERSION_INFO;
public const string OPENSSL_VERSION = "OpenSSL 0.0.0 (.NET SSL)";
private static readonly List<Asn1Object> _asn1Objects = new List<Asn1Object>();
static PythonSsl() {
_asn1Objects.AddRange(new Asn1Object[] {
new Asn1Object("serverAuth", "TLS Web Server Authentication", 129, new byte[] { 1, 3, 6, 1 ,5, 5, 7, 3, 1 }),
new Asn1Object("clientAuth", "TLS Web Client Authentication", 130, new byte[] { 1, 3, 6, 1 ,5, 5, 7, 3, 2 }),
});
}
[SpecialName]
public static void PerformModuleReload(PythonContext/*!*/ context, PythonDictionary/*!*/ dict) {
var sslError = context.EnsureModuleException("SSLError", PythonSocket.error, dict, "SSLError", "ssl");
context.EnsureModuleException("SSLZeroReturnError", sslError, dict, "SSLZeroReturnError", "ssl");
context.EnsureModuleException("SSLWantWriteError", sslError, dict, "SSLWantWriteError", "ssl");
context.EnsureModuleException("SSLSyscallError", sslError, dict, "SSLSyscallError", "ssl");
context.EnsureModuleException("SSLEOFError", sslError, dict, "SSLEOFError", "ssl");
context.EnsureModuleException("SSLWantReadError", sslError, dict, "SSLWantReadError", "ssl");
}
#region Stubs for RAND functions
// The RAND_ functions are effectively no-ops, as the BCL draws on system sources
// for cryptographically-strong randomness and doesn't need (or accept) user input
public static void RAND_add(object buf, double entropy) {
if (!(buf is string) && !(buf is IBufferProtocol)) {
throw PythonOps.TypeError($"'{PythonOps.GetPythonTypeName(buf)}' does not support the buffer interface");
}
}
public static int RAND_status() => 1; // always ready
public static object RAND_bytes(int num) => PythonNT.urandom(num);
public static object RAND_pseudo_bytes(int num) => PythonTuple.MakeTuple(PythonNT.urandom(num), true);
#endregion
[PythonType]
public class _SSLContext {
internal readonly X509Certificate2Collection _cert_store = new X509Certificate2Collection();
internal string _cafile;
internal X509Certificate2 _cert;
private int _verify_mode = SSL_VERIFY_NONE;
public _SSLContext(CodeContext context, int protocol) {
if (protocol != PROTOCOL_SSLv2 && protocol != PROTOCOL_SSLv23 && protocol != PROTOCOL_SSLv3 &&
protocol != PROTOCOL_TLSv1 && protocol != PROTOCOL_TLSv1_1 && protocol != PROTOCOL_TLSv1_2) {
throw PythonOps.ValueError("invalid protocol version");
}
this.protocol = protocol;
if (protocol != PROTOCOL_SSLv2)
options |= OP_NO_SSLv2;
if (protocol != PROTOCOL_SSLv3)
options |= OP_NO_SSLv3;
verify_mode = SSL_VERIFY_NONE;
check_hostname = false;
}
public void set_ciphers(CodeContext context, string ciphers) {
// TODO
}
public void _set_alpn_protocols(CodeContext context, IBufferProtocol protos) {
// TODO
}
public void _set_npn_protocols(CodeContext context, IBufferProtocol protos) {
// TODO
}
public int options {
get; set;
}
public int verify_mode {
get {
return _verify_mode;
}
set {
if (_verify_mode != CERT_NONE && _verify_mode != CERT_OPTIONAL && _verify_mode != CERT_REQUIRED) {
throw PythonOps.ValueError("invalid value for verify_mode");
}
// TODO: change this in 3.7
if (check_hostname && value == CERT_NONE) {
throw PythonOps.ValueError("Cannot set verify_mode to CERT_NONE when check_hostname is enabled.");
}
_verify_mode = value;
}
}
public int protocol {
get; set;
}
private bool _check_hostname;
public bool check_hostname {
get => _check_hostname;
set {
// TODO: change this in 3.7
if (value && _verify_mode != CERT_OPTIONAL && _verify_mode != CERT_REQUIRED) {
throw PythonOps.ValueError("check_hostname needs a SSL context with either CERT_OPTIONAL or CERT_REQUIRED");
}
_check_hostname = value;
}
}
public void set_default_verify_paths(CodeContext context) {
}
public void set_ecdh_curve(CodeContext context, [NotNone] string curve) {
if (curve != "prime256v1")
throw PythonOps.ValueError($"unknown elliptic curve name {PythonOps.Repr(context, curve)}");
}
public void set_ecdh_curve(CodeContext context, [NotNone] Bytes curve) {
if (curve.MakeString() != "prime256v1")
throw PythonOps.ValueError($"unknown elliptic curve name {PythonOps.Repr(context, curve)}");
}
public void load_cert_chain(CodeContext context, string certfile, string keyfile = null, object password = null) {
if (keyfile is not null) throw new NotImplementedException(nameof(keyfile));
if (password is not null) throw new NotImplementedException(nameof(password));
#if NET
_cert = X509Certificate2.CreateFromPemFile(certfile, keyfile);
#else
_cert = ReadCertificate(context, certfile, readKey: true);
#endif
}
public PythonList get_ca_certs(CodeContext context, bool binary_form = false) {
if (binary_form) throw new NotImplementedException(nameof(binary_form));
return PythonList.FromEnumerable(_cert_store.Cast<X509Certificate2>().Select(c => CertificateToPython(context, c)));
}
public void load_verify_locations(CodeContext context, object cafile = null, string capath = null, object cadata = null) {
if (cafile == null && capath == null && cadata == null) {
throw PythonOps.TypeError("cafile, capath and cadata cannot be all omitted");
}
if (cafile is not null) {
if (cafile is string s) {
_cafile = s;
} else if (cafile is Bytes b) {
_cafile = b.MakeString();
} else {
throw PythonOps.TypeError("cafile should be a valid filesystem path");
}
#if NET
_cert_store.ImportFromPemFile(_cafile);
#else
_cert_store.Add(ReadCertificate(context, _cafile));
#endif
}
if (capath != null) {
// TODO
}
if (cadata is not null) {
if (cadata is string s) {
if (!StringOps.TryEncodeAscii(s, out Bytes ascii))
throw PythonOps.ValueError("cadata should be an ASCII string or a bytes-like object");
#if NET
_cert_store.ImportFromPem(s);
#else
string line;
var lines = new List<string>();
using var stream = new MemoryStream(ascii.UnsafeByteArray);
using var sr = new StreamReader(stream);
while ((line = sr.ReadLine()) != null)
lines.Add(line);
_cert_store.Add(ReadCertificate(context, string.Empty, lines.ToArray()));
#endif
} else if (cadata is IBufferProtocol cabuf) {
using IPythonBuffer buf = cabuf.GetBuffer();
var contents = buf.AsReadOnlySpan();
while (contents.Length > 0) {
#if NET
var cert = new X509Certificate2(contents);
#else
var cert = new X509Certificate2(contents.ToArray());
#endif
_cert_store.Add(cert);
contents = contents.Slice(cert.GetRawCertData().Length);
}
} else {
throw PythonOps.ValueError("cadata should be an ASCII string or a bytes-like object");
}
}
}
public object _wrap_socket(CodeContext context, PythonSocket.socket sock, bool server_side, string server_hostname = null) {
return new _SSLSocket(context, this, sock, server_side, server_hostname);
}
}
[PythonType]
public class _SSLSocket {
private SslStream _sslStream;
private readonly PythonSocket.socket _socket;
private readonly X509Certificate2Collection _certCollection;
private readonly int _certsMode;
private readonly bool _validate, _serverSide;
private readonly CodeContext _context;
private readonly RemoteCertificateValidationCallback _callback;
private Exception _validationFailure;
public _SSLContext context { get; }
public object owner { get; set; } // TODO
public string server_hostname { get; }
public string version() => ProtocolToPython();
internal _SSLSocket(CodeContext context, _SSLContext sslcontext, PythonSocket.socket sock, bool server_side, string server_hostname) {
if (sock == null) {
throw PythonOps.TypeError("expected socket object, got None");
}
this.context = sslcontext;
_serverSide = server_side;
this.server_hostname = server_hostname;
_certsMode = sslcontext.verify_mode;
bool validate;
RemoteCertificateValidationCallback callback;
switch (_certsMode) {
case PythonSsl.CERT_NONE:
validate = false;
callback = CertValidationCallback;
break;
case PythonSsl.CERT_OPTIONAL:
validate = true;
callback = CertValidationCallbackOptional;
break;
case PythonSsl.CERT_REQUIRED:
validate = true;
callback = CertValidationCallbackRequired;
break;
default:
throw new InvalidOperationException(String.Format("bad certs_mode: {0}", _certsMode));
}
_callback = callback;
if (sslcontext._cert_store != null) {
_certCollection = sslcontext._cert_store;
}
_socket = sock;
EnsureSslStream(false);
_validate = validate;
_context = context;
}
private void EnsureSslStream(bool throwWhenNotConnected) {
if (_sslStream == null && _socket._socket.Connected) {
if (_serverSide) {
_sslStream = new SslStream(
new NetworkStream(_socket._socket, false),
true,
_callback
);
} else {
_sslStream = new SslStream(
new NetworkStream(_socket._socket, false),
true,
_callback,
CertSelectLocal
);
}
}
if (throwWhenNotConnected && _sslStream == null) {
throw PythonExceptions.CreateThrowable(PythonSocket.error, 10057, "A request to send or receive data was disallowed because the socket is not connected.");
}
}
internal bool CertValidationCallback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) {
return true;
}
internal bool CertValidationCallbackOptional(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) {
if (!_serverSide) {
if (certificate != null && sslPolicyErrors != SslPolicyErrors.None) {
ValidateCertificate(certificate, chain, sslPolicyErrors);
}
}
return true;
}
internal X509Certificate CertSelectLocal(object sender, string targetHost, X509CertificateCollection collection, X509Certificate remoteCertificate, string[] acceptableIssuers) {
if (acceptableIssuers != null && acceptableIssuers.Length > 0 && collection != null && collection.Count > 0) {
// Use the first certificate that is from an acceptable issuer.
foreach (X509Certificate certificate in collection) {
string issuer = certificate.Issuer;
if (Array.IndexOf(acceptableIssuers, issuer) != -1)
return certificate;
}
}
if (collection != null && collection.Count > 0) {
return collection[0];
}
return null;
}
internal bool CertValidationCallbackRequired(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) {
if (!_serverSide) {
// client check
if (certificate == null) {
ValidationError(SslPolicyErrors.None);
} else if (sslPolicyErrors != SslPolicyErrors.None) {
ValidateCertificate(certificate, chain, sslPolicyErrors);
}
}
return true;
}
private void ValidateCertificate(X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) {
if (chain.ChainStatus.Length == 0) {
ValidationError(sslPolicyErrors);
return;
}
foreach (var elem in chain.ChainStatus) {
if (elem.Status == X509ChainStatusFlags.UntrustedRoot) {
bool isOk = false;
foreach (var cert in _certCollection) {
if (certificate.Issuer == cert.Subject) {
isOk = true;
}
}
if (isOk) {
continue;
}
}
ValidationError(sslPolicyErrors);
break;
}
}
private void ValidationError(object reason) {
_validationFailure = PythonExceptions.CreateThrowable(PythonSsl.SSLError(_context), "errors while validating certificate chain: ", reason.ToString());
}
public void do_handshake() {
try {
// make sure the remote side hasn't shutdown before authenticating so we don't
// hang if we're in blocking mode.
#pragma warning disable 219 // unused variable
int available = _socket._socket.Available;
#pragma warning restore 219
} catch (SocketException) {
throw PythonExceptions.CreateThrowable(PythonExceptions.OSError, "socket closed before handshake");
}
EnsureSslStream(true);
var enabledSslProtocols = GetProtocolType(context.protocol, context.options);
try {
if (_serverSide) {
var _cert = context._cert;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
_cert = new X509Certificate2(_cert.Export(X509ContentType.Pkcs12));
}
_sslStream.AuthenticateAsServer(_cert, _certsMode == PythonSsl.CERT_REQUIRED, enabledSslProtocols, false);
} else {
string hostname = server_hostname ?? _socket._hostName ?? _socket._socket.RemoteEndPoint switch {
System.Net.IPEndPoint ipEP => ipEP.Address.ToString(),
System.Net.DnsEndPoint dnsEP => dnsEP.Host,
_ => string.Empty,
};
_sslStream.AuthenticateAsClient(hostname, context._cert_store, enabledSslProtocols, false);
}
} catch (AuthenticationException e) {
((IDisposable)_socket._socket).Dispose();
throw PythonExceptions.CreateThrowable(PythonSsl.SSLError(_context), "errors while performing handshake: ", e.ToString());
}
if (_validationFailure != null) {
throw _validationFailure;
}
}
public PythonSocket.socket shutdown() {
_sslStream.Dispose();
return _socket;
}
/* supported communication based upon what the client & server specify
* as per the CPython docs:
* client / server SSLv2 SSLv3 SSLv23 TLSv1 TLSv1.1 TLSv1.2
SSLv2 yes no yes no no no
SSLv3 no yes yes no no no
SSLv23 no yes yes yes yes yes
TLSv1 no no yes yes no no
TLSv1.1 no no yes no yes no
TLSv1.2 no no yes no no yes
*/
#pragma warning disable CA5397 // Do not use deprecated SslProtocols values
#pragma warning disable CS0618 // Type or member is obsolete
#pragma warning disable SYSLIB0039 // Type or member is obsolete
private static SslProtocols GetProtocolType(int protocol, int options) {
SslProtocols result = SslProtocols.None;
switch (protocol) {
case PythonSsl.PROTOCOL_SSLv2:
result = SslProtocols.Ssl2;
break;
case PythonSsl.PROTOCOL_SSLv3:
result = SslProtocols.Ssl3;
break;
case PythonSsl.PROTOCOL_SSLv23:
result = SslProtocols.Ssl2 | SslProtocols.Ssl3 | SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12;
break;
case PythonSsl.PROTOCOL_TLSv1:
result = SslProtocols.Tls;
break;
case PythonSsl.PROTOCOL_TLSv1_1:
result = SslProtocols.Tls11;
break;
case PythonSsl.PROTOCOL_TLSv1_2:
result = SslProtocols.Tls12;
break;
default:
throw new InvalidOperationException("bad ssl protocol type: " + protocol);
}
// Filter out requested protocol exclusions:
result &= (options & PythonSsl.OP_NO_SSLv3) != 0 ? ~SslProtocols.Ssl3 : ~SslProtocols.None;
result &= (options & PythonSsl.OP_NO_SSLv2) != 0 ? ~SslProtocols.Ssl2 : ~SslProtocols.None;
result &= (options & PythonSsl.OP_NO_TLSv1) != 0 ? ~SslProtocols.Tls : ~SslProtocols.None;
result &= (options & PythonSsl.OP_NO_TLSv1_1) != 0 ? ~SslProtocols.Tls11 : ~SslProtocols.None;
result &= (options & PythonSsl.OP_NO_TLSv1_2) != 0 ? ~SslProtocols.Tls12 : ~SslProtocols.None;
return result;
}
#pragma warning restore SYSLIB0039 // Type or member is obsolete
#pragma warning restore CS0618 // Type or member is obsolete
#pragma warning restore CA5397 // Do not use deprecated SslProtocols values
public PythonTuple cipher() {
if (_sslStream != null && _sslStream.IsAuthenticated) {
return PythonTuple.MakeTuple(
_sslStream.CipherAlgorithm.ToString(),
ProtocolToPython(),
_sslStream.CipherStrength
);
}
return null;
}
public object compression() => null; // TODO
#pragma warning disable CA5397 // Do not use deprecated SslProtocols values
#pragma warning disable CS0618 // Type or member is obsolete
#pragma warning disable SYSLIB0039 // Type or member is obsolete
private string ProtocolToPython() {
switch (_sslStream.SslProtocol) {
case SslProtocols.Ssl2: return "SSLv2";
case SslProtocols.Ssl3: return "TLSv1/SSLv3";
case SslProtocols.Tls: return "TLSv1";
default: return _sslStream.SslProtocol.ToString();
}
}
#pragma warning restore SYSLIB0039 // Type or member is obsolete
#pragma warning restore CS0618 // Type or member is obsolete
#pragma warning restore CA5397 // Do not use deprecated SslProtocols values
public object peer_certificate(bool binary_form) {
var peerCert = _sslStream?.RemoteCertificate;
if (peerCert != null) {
if (binary_form) {
return Bytes.Make(peerCert.GetRawCertData());
} else if (_validate) {
return CertificateToPython(_context, peerCert);
}
}
return null;
}
public int pending() {
return _socket._socket.Available;
}
[Documentation("issuer() -> issuer_certificate\n\n"
+ "Returns a string that describes the issuer of the server's certificate. Only useful for debugging purposes."
)]
public string issuer() {
if (_sslStream != null && _sslStream.IsAuthenticated) {
X509Certificate remoteCertificate = _sslStream.RemoteCertificate;
if (remoteCertificate != null) {
return remoteCertificate.Issuer;
} else {
return String.Empty;
}
}
return String.Empty;
}
[Documentation(@"read(size, [buffer])
Read up to size bytes from the SSL socket.")]
public Bytes read(CodeContext/*!*/ context, int size) {
EnsureSslStream(true);
if (size < 0) throw PythonOps.ValueError("size should not be negative");
var buf = ArrayPool.Rent(size);
try {
int numRead;
try {
numRead = _sslStream.Read(buf, 0, size);
} catch (Exception e) {
throw PythonSocket.MakeException(context, e);
}
var bytes = new byte[numRead];
Array.Copy(buf, bytes, bytes.Length);
return Bytes.Make(bytes);
} finally {
ArrayPool.Return(buf);
}
}
private static ArrayPool<byte> ArrayPool => ArrayPool<byte>.Shared;
[Documentation(@"read(size, [buffer])
Read up to size bytes from the SSL socket.")]
public int read(CodeContext/*!*/ context, int size, [NotNone] IBufferProtocol buffer) {
EnsureSslStream(true);
using var pythonBuffer = buffer.GetBufferNoThrow(BufferFlags.Writable)
?? throw PythonOps.TypeError("read() argument 2 must be read-write bytes-like object, not {0}", PythonOps.GetPythonTypeName(buffer));
var bufferLen = pythonBuffer.ItemCount;
if (size <= 0 || bufferLen < size) size = bufferLen;
try {
#if NETCOREAPP
return _sslStream.Read(pythonBuffer.AsSpan().Slice(0, size));
#else
var buf = pythonBuffer.AsUnsafeWritableArray();
if (buf is null) {
buf = ArrayPool.Rent(size);
try {
var numRead = _sslStream.Read(buf, 0, size);
buf.AsSpan(0, numRead).CopyTo(pythonBuffer.AsSpan());
return numRead;
}
finally {
ArrayPool.Return(buf);
}
}
else {
return _sslStream.Read(buf, 0, size);
}
#endif
} catch (Exception e) {
throw PythonSocket.MakeException(context, e);
}
}
[Documentation("server() -> server_certificate\n\n"
+ "Returns a string that describes the server's certificate. Only useful for debugging purposes."
)]
public string server() {
if (_sslStream != null && _sslStream.IsAuthenticated) {
X509Certificate remoteCertificate = _sslStream.RemoteCertificate;
if (remoteCertificate != null) {
return remoteCertificate.Subject;
}
}
return String.Empty;
}
[Documentation(@"Writes the bytes-like object b into the SSL object.
Returns the number of bytes written.")]
public int write(CodeContext/*!*/ context, IBufferProtocol data) {
EnsureSslStream(true);
using var buffer = data.GetBuffer();
try {
#if NETCOREAPP
var bytes = buffer.AsReadOnlySpan();
_sslStream.Write(bytes);
return bytes.Length;
#else
var bytes = buffer.AsUnsafeArray() ?? buffer.ToArray();
_sslStream.Write(bytes);
return bytes.Length;
#endif
} catch (Exception e) {
throw PythonSocket.MakeException(context, e);
}
}
}
#nullable enable
[PythonType]
public class MemoryBIO {
private bool _write_eof;
public bool eof { get; private set; }
public int pending { get; private set; }
private Bytes? buf;
private Queue<Bytes> queue = new Queue<Bytes>();
public MemoryBIO() { }
public Bytes read(int size = -1) {
if (size == 0 || eof) {
return Bytes.Empty;
}
if (size == -1 || size > pending) {
size = pending;
}
byte[] res = new byte[size];
var resSpan = res.AsSpan();
if (buf is not null) {
var span = buf.AsSpan();
var length = resSpan.Length;
if (length < span.Length) {
buf = Bytes.Make(span.Slice(length).ToArray());
span = span.Slice(0, length);
} else {
buf = null;
}
span.CopyTo(resSpan);
resSpan = resSpan.Slice(span.Length);
}
while (resSpan.Length > 0) {
Debug.Assert(buf is null && queue.Count > 0);
var span = queue.Dequeue().AsSpan();
var length = resSpan.Length;
if (length < span.Length) {
buf = Bytes.Make(span.Slice(length).ToArray());
span = span.Slice(0, length);
}
span.CopyTo(resSpan);
resSpan = resSpan.Slice(span.Length);
}
pending -= size;
if (_write_eof && pending == 0) eof = true;
return Bytes.Make(res);
}
public int write(CodeContext context, [NotNone] IBufferProtocol b) {
if (_write_eof) throw PythonExceptions.CreateThrowable(SSLError(context), "cannot write() after write_eof()");
if (b is not Bytes bytes) {
using var buffer = b.GetBuffer();
bytes = Bytes.Make(buffer.ToArray());
}
if (bytes.Count == 0) return 0;
queue.Enqueue(bytes);
pending += bytes.Count;
return bytes.Count;
}
public void write_eof() {
_write_eof = true;
if (pending == 0) eof = true;
}
}
#nullable restore
public static object txt2obj(CodeContext context, string txt, bool name = false) {
Asn1Object obj = null;
if (name) {
obj = _asn1Objects.Where(x => txt == x.OIDString || txt == x.ShortName || txt == x.LongName).FirstOrDefault();
} else {
obj = _asn1Objects.Where(x => txt == x.OIDString).FirstOrDefault();
}
if (obj == null) {
throw PythonOps.ValueError("unknown object '{0}'", txt);
}
return obj.ToTuple();
}
public static object nid2obj(CodeContext context, int nid) {
if (nid < 0) {
throw PythonOps.ValueError("NID must be positive");
}
var obj = _asn1Objects.Where(x => x.NID == nid).FirstOrDefault();
if (obj == null) {
throw PythonOps.ValueError("unknown NID {0}", nid);
}
return obj.ToTuple();
}
public static PythonList enum_certificates(string store_name) {
X509Store store = null;
try {
store = new X509Store(store_name, StoreLocation.LocalMachine);
store.Open(OpenFlags.ReadOnly);
var result = new PythonList();
foreach (var cert in store.Certificates) {
string format = cert.GetFormat();
switch (format) {
case "X509":
format = "x509_asn";
break;
default:
format = "unknown";
break;
}
var set = new SetCollection();
bool found = false;
foreach (var ext in cert.Extensions) {
var keyUsage = ext as X509EnhancedKeyUsageExtension;
if (keyUsage != null) {
foreach (var oid in keyUsage.EnhancedKeyUsages) {
set.add(oid.Value);
}
found = true;
break;
}
}
result.Add(PythonTuple.MakeTuple(new Bytes(cert.RawData.ToList()), format, found ? set : ScriptingRuntimeHelpers.True));
}
return result;
} catch {
} finally {
store?.Close();
}
return new PythonList();
}
public static PythonList enum_crls(string store_name) {
X509Store store = null;
try {
store = new X509Store(store_name, StoreLocation.LocalMachine);
store.Open(OpenFlags.ReadOnly);
var result = new PythonList();
foreach (var cert in store.Certificates) {
string format = cert.GetFormat();
}
} catch {
} finally {
store?.Close();
}
return new PythonList();
}
internal static PythonType SSLError(CodeContext/*!*/ context) {
return (PythonType)context.LanguageContext.GetModuleState("SSLError");
}
public static PythonDictionary _test_decode_cert(CodeContext context, string path) {
var cert = ReadCertificate(context, path);
return CertificateToPython(context, cert);
}
private static PythonDictionary CertificateToPython(CodeContext context, X509Certificate cert) {
if (cert is X509Certificate2 cert2)
return CertificateToPython(context, cert2);
return CertificateToPython(context, new X509Certificate2(cert.GetRawCertData()));
}
private static PythonDictionary CertificateToPython(CodeContext context, X509Certificate2 cert) {
var dict = new CommonDictionaryStorage();
dict.AddNoLock("notAfter", ToPythonDateFormat(cert.NotAfter));
dict.AddNoLock("subject", IssuerToPython(context, cert.Subject));
dict.AddNoLock("notBefore", ToPythonDateFormat(cert.NotBefore));
dict.AddNoLock("serialNumber", SerialNumberToPython(cert));
dict.AddNoLock("version", cert.Version);
dict.AddNoLock("issuer", IssuerToPython(context, cert.Issuer));
AddSubjectAltNames(dict, cert);
return new PythonDictionary(dict);
string ToPythonDateFormat(DateTime date) {
var dateStr = date.ToUniversalTime().ToString("MMM dd HH:mm:ss yyyy", CultureInfo.InvariantCulture) + " GMT";
if (dateStr[4] == '0')
dateStr = dateStr.Substring(0, 4) + " " + dateStr.Substring(5); // CPython uses leading space
return dateStr;
}
}
private static void AddSubjectAltNames(CommonDictionaryStorage dict, X509Certificate2 cert2) {
foreach (var extension in cert2.Extensions) {
if (extension.Oid.Value != "2.5.29.17") { // Subject Alternative Name
continue;
}
var altNames = new List<object>();
var sr = new StringReader(extension.Format(true));
// The string generated by format varies depending on the platform, for example:
// - On Windows, one entry per line:
// DNS Name=www.python.org
// DNS Name=pypi.python.org
// - On Mac/Linux (.NET Core), multiple entries on a single line:
// DNS:www.python.org, DNS:pypi.python.org
string line;
while (null != (line = sr.ReadLine())) {
line = line.Trim();
// On Linux and Mac (.NET Core), Format produces a string matching the OpenSSL format which may contain multiple entries:
foreach (var val in line.Split(',')) {
var keyValue = val.Split(new char[] { ':', '=' });
// On Windows, Format produces different results based on the locale so we can't check for a specific key
if (keyValue[0].Contains("DNS") && keyValue.Length == 2) {
altNames.Add(PythonTuple.MakeTuple("DNS", keyValue[1]));
}
}
}
dict.AddNoLock("subjectAltName", PythonTuple.MakeTuple(altNames.ToArray()));
break;
}
}
private static string SerialNumberToPython(X509Certificate2 cert) {
var res = cert.SerialNumber;
for (int i = 0; i < res.Length; i++) {
if (res[i] != '0') {
return res.Substring(i);
}
}
return res;
}
// yields parts out of issuer or subject string
// Respects quoted comma e.g: CN=*.c.ssl.fastly.net, O="Fastly, Inc.", L=San Francisco, S=California, C=US
// Quote characters are removed
private static IEnumerable<string> IssuerParts(string issuer) {
var inQuote = false;
var token = new StringBuilder();
foreach (var c in issuer) {
if (inQuote) {
if (c == '"') {
inQuote = false;
} else {
token.Append(c);
}
} else {
if (c == '"') {
inQuote = true;
} else if (c == ',') {
yield return token.ToString().Trim();
token.Length = 0;
} else {
token.Append(c);
}
}
}
if (token.Length > 0)
yield return token.ToString().Trim();
}
private static PythonTuple IssuerToPython(CodeContext context, string issuer) {
var collector = new List<object>();
foreach (var part in IssuerParts(issuer)) {
var field = IssuerFieldToPython(context, part);
if (field != null) {
collector.Add(PythonTuple.MakeTuple(new object[] { field }));
}
}
return PythonTuple.MakeTuple(collector.ToReverseArray()); // CPython reverses the fields
}
private static PythonTuple IssuerFieldToPython(CodeContext context, string p) {
if (p.StartsWith("CN=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("commonName", p.Substring(3));
} else if (p.StartsWith("OU=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("organizationalUnitName", p.Substring(3));
} else if (p.StartsWith("O=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("organizationName", p.Substring(2));
} else if (p.StartsWith("L=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("localityName", p.Substring(2));
} else if (p.StartsWith("S=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("stateOrProvinceName", p.Substring(2));
} else if (p.StartsWith("C=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("countryName", p.Substring(2));
} else if (p.StartsWith("E=", StringComparison.Ordinal)) {
return PythonTuple.MakeTuple("email", p.Substring(2));
}
// Ignore unknown fields
return null;
}
private static X509Certificate2 ReadCertificate(CodeContext context, string filename, bool readKey = false) {
#if NET
if (readKey) {
return X509Certificate2.CreateFromPemFile(filename);
}
#endif