public static MimeMessage ParseMessage(Stream inputStream, HTTPHeaders headers, CancellationToken cancellationToken)
{
if (inputStream == null || inputStream == Stream.Null)
{
return(null);
}
var headerArray = headers.ToArray();
if (IsMimeMessage(headerArray) == false)
{
return(null);
}
string headerString = String.Join("\r\n", headerArray.Select(h => $"{h.Name}: {h.Value}"));
try
{
using (ChainedStream streamWithHeaders = new ChainedStream())
{
streamWithHeaders.Add(new MemoryStream(Encoding.UTF8.GetBytes(headerString)), false);
streamWithHeaders.Add(inputStream, false);
var parser = new MimeKit.MimeParser(streamWithHeaders);
return(parser.ParseMessage(cancellationToken));
}
}
catch (FormatException)
{
return(null);
}
}
static MimeMessage Load (string path)
{
using (var file = File.OpenRead (path)) {
var parser = new MimeParser (file);
return parser.ParseMessage ();
}
}
public void TestJwzMbox()
{
var summary = File.ReadAllText ("../../TestData/mbox/jwz-summary.txt");
var builder = new StringBuilder ();
using (var stream = File.OpenRead ("../../TestData/mbox/jwz.mbox.txt")) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
var message = parser.ParseMessage ();
builder.AppendFormat ("{0}\n", parser.MboxMarker);
if (message.From.Count > 0)
builder.AppendFormat ("From: {0}\n", message.From);
if (message.To.Count > 0)
builder.AppendFormat ("To: {0}\n", message.To);
builder.AppendFormat ("Subject: {0}\n", message.Subject);
builder.AppendFormat ("Date: {0}\n", DateUtils.FormatDate (message.Date));
DumpMimeTree (builder, message.Body, 0);
builder.Append ("\n");
}
}
string actual = builder.ToString ();
// WORKAROUND: Mono's iso-2022-jp decoder breaks on this input in versions <= 3.2.3 but is fixed in 3.2.4+
string iso2022jp = Encoding.GetEncoding ("iso-2022-jp").GetString (Convert.FromBase64String ("GyRAOjRGI0stGyhK"));
if (iso2022jp != "佐藤豊")
actual = actual.Replace (iso2022jp, "佐藤豊");
Assert.AreEqual (summary, actual, "Summaries do not match for jwz.mbox");
}
/// <summary>
/// Join the specified message/partial parts into the complete message.
/// </summary>
/// <param name="options">The parser options to use.</param>
/// <param name="partials">The list of partial message parts.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="partials"/>is <c>null</c>.</para>
/// </exception>
public static MimeMessage Join(ParserOptions options, IEnumerable <MessagePartial> partials)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (partials == null)
{
throw new ArgumentNullException("partials");
}
var parts = partials.ToList();
if (parts.Count == 0)
{
return(null);
}
parts.Sort(PartialCompare);
if (!parts[parts.Count - 1].Total.HasValue)
{
throw new ArgumentException("partials");
}
int total = parts[parts.Count - 1].Total.Value;
if (parts.Count != total)
{
throw new ArgumentException("partials");
}
string id = parts[0].Id;
using (var chained = new ChainedStream()) {
// chain all of the partial content streams...
for (int i = 0; i < parts.Count; i++)
{
int number = parts[i].Number.Value;
if (number != i + 1)
{
throw new ArgumentException("partials");
}
var content = parts[i].ContentObject;
content.Stream.Seek(0, SeekOrigin.Begin);
var filtered = new FilteredStream(content.Stream);
filtered.Add(DecoderFilter.Create(content.Encoding));
chained.Add(filtered);
}
var parser = new MimeParser(options, chained);
return(parser.ParseMessage());
}
}
/// <summary>
/// Joins the specified message/partial parts into the complete message.
/// </summary>
/// <remarks>
/// Combines all of the message/partial fragments into its original,
/// complete, message.
/// </remarks>
/// <returns>The re-combined message.</returns>
/// <param name="options">The parser options to use.</param>
/// <param name="partials">The list of partial message parts.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="partials"/>is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.ArgumentException">
/// <para>The last partial does not have a Total.</para>
/// <para>-or-</para>
/// <para>The number of partials provided does not match the expected count.</para>
/// <para>-or-</para>
/// <para>One or more partials is missing.</para>
/// </exception>
public static MimeMessage Join(ParserOptions options, IEnumerable <MessagePartial> partials)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (partials == null)
{
throw new ArgumentNullException("partials");
}
var parts = partials.ToList();
if (parts.Count == 0)
{
return(null);
}
parts.Sort(PartialCompare);
if (!parts[parts.Count - 1].Total.HasValue)
{
throw new ArgumentException("The last partial does not have a Total.", "partials");
}
int total = parts[parts.Count - 1].Total.Value;
if (parts.Count != total)
{
throw new ArgumentException("The number of partials provided does not match the expected count.", "partials");
}
string id = parts[0].Id;
using (var chained = new ChainedStream()) {
// chain all of the partial content streams...
for (int i = 0; i < parts.Count; i++)
{
int number = parts[i].Number.Value;
if (number != i + 1)
{
throw new ArgumentException("One or more partials is missing.", "partials");
}
var content = parts[i].ContentObject;
chained.Add(content.Open());
}
var parser = new MimeParser(options, chained);
return(parser.ParseMessage());
}
}
static void Main( )
{
// Use the system console object
FileStream stream = new FileStream("/home/bhj/Maildir/SentMails/cur/1419597900.M517484P16503Q0.bhj-home:2,S", FileMode.Open);
var parser = new MimeParser (stream, MimeFormat.Entity);
var message = parser.ParseMessage ();
FileStream output = new FileStream("/home/bhj/tmp/out.txt", FileMode.Create);
foreach (var part in message.BodyParts) {
part.ContentObject.DecodeTo (output);
// do something
}
}
/// <summary>
/// Load a <see cref="MimeEntity"/> from the specified stream.
/// </summary>
/// <remarks>
/// <para>Loads a <see cref="MimeEntity"/> from the given stream, using the
/// specified <see cref="ParserOptions"/>.</para>
/// <para>If <paramref name="persistent"/> is <c>true</c> and <paramref name="stream"/> is seekable, then
/// the <see cref="MimeParser"/> will not copy the content of <see cref="MimePart"/>s into memory. Instead,
/// it will use a <see cref="MimeKit.IO.BoundStream"/> to reference a substream of <paramref name="stream"/>.
/// This has the potential to not only save mmeory usage, but also improve <see cref="MimeParser"/>
/// performance.</para>
/// </remarks>
/// <returns>The parsed MIME entity.</returns>
/// <param name="options">The parser options.</param>
/// <param name="stream">The stream.</param>
/// <param name="persistent"><c>true</c> if the stream is persistent; otherwise <c>false</c>.</param>
/// <param name="cancellationToken">A cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="stream"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.FormatException">
/// There was an error parsing the entity.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
public static MimeEntity Load(ParserOptions options, Stream stream, bool persistent, CancellationToken cancellationToken = default(CancellationToken))
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (stream == null)
{
throw new ArgumentNullException("stream");
}
var parser = new MimeParser(options, stream, MimeFormat.Entity, persistent);
return(parser.ParseEntity(cancellationToken));
}
/// <summary>
/// Load a <see cref="HeaderList"/> from the specified stream.
/// </summary>
/// <remarks>
/// Loads a <see cref="HeaderList"/> from the given stream, using the
/// specified <see cref="ParserOptions"/>.
/// </remarks>
/// <returns>The parsed list of headers.</returns>
/// <param name="options">The parser options.</param>
/// <param name="stream">The stream.</param>
/// <param name="cancellationToken">A cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="stream"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.FormatException">
/// There was an error parsing the headers.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
public static HeaderList Load(ParserOptions options, Stream stream, CancellationToken cancellationToken = default(CancellationToken))
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (stream == null)
{
throw new ArgumentNullException("stream");
}
var parser = new MimeParser(options, stream, MimeFormat.Entity);
return(parser.ParseHeaders(cancellationToken));
}
public void TestEmptyMultipartAlternative()
{
string expected = @"Content-Type: multipart/mixed
Content-Type: multipart/alternative
Content-Type: text/plain
";
using (var stream = File.OpenRead ("../../TestData/messages/empty-multipart.txt")) {
var parser = new MimeParser (stream, MimeFormat.Entity);
var message = parser.ParseMessage ();
var builder = new StringBuilder ();
DumpMimeTree (builder, message.Body, 0);
Assert.AreEqual (expected, builder.ToString (), "Unexpected MIME tree structure.");
}
}
public void TestMimeVisitor ()
{
var dataDir = Path.Combine ("..", "..", "TestData", "mbox");
var visitor = new HtmlPreviewVisitor ();
int index = 0;
using (var stream = File.OpenRead (Path.Combine (dataDir, "jwz.mbox.txt"))) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
var filename = string.Format ("jwz.body.{0}.html", index);
var path = Path.Combine (dataDir, filename);
var message = parser.ParseMessage ();
string expected, actual;
visitor.Visit (message);
actual = visitor.HtmlBody;
if (!string.IsNullOrEmpty (actual))
actual = actual.Replace ("\r\n", "\n");
if (!File.Exists (path) && actual != null)
File.WriteAllText (path, actual);
if (File.Exists (path))
expected = File.ReadAllText (path, Encoding.UTF8).Replace ("\r\n", "\n");
else
expected = null;
if (index != 6 && index != 13 && index != 31) {
// message 6, 13 and 31 contain some japanese text that is broken in Mono
Assert.AreEqual (expected, actual, "The bodies do not match for message {0}", index);
}
visitor.Reset ();
index++;
}
}
}
public void TestSecureMimeDecryptThunderbird()
{
var p12 = Path.Combine ("..", "..", "TestData", "smime", "gnome.p12");
MimeMessage message;
if (!File.Exists (p12))
return;
using (var file = File.OpenRead (Path.Combine ("..", "..", "TestData", "smime", "thunderbird-encrypted.txt"))) {
var parser = new MimeParser (file, MimeFormat.Default);
message = parser.ParseMessage ();
}
using (var ctx = CreateContext ()) {
var encrypted = (ApplicationPkcs7Mime) message.Body;
MimeEntity decrypted = null;
using (var file = File.OpenRead (p12)) {
ctx.Import (file, "no.secret");
}
var type = encrypted.ContentType.Parameters["smime-type"];
Assert.AreEqual ("enveloped-data", type, "Unexpected smime-type parameter.");
try {
decrypted = encrypted.Decrypt (ctx);
} catch (Exception ex) {
Console.WriteLine (ex);
Assert.Fail ("Failed to decrypt thunderbird message: {0}", ex);
}
// The decrypted part should be a multipart/mixed with a text/plain part and an image attachment,
// very much like the thunderbird-signed.txt message.
Assert.IsInstanceOfType (typeof (Multipart), decrypted, "Expected the decrypted part to be a Multipart.");
var multipart = (Multipart) decrypted;
Assert.IsInstanceOfType (typeof (TextPart), multipart[0], "Expected the first part of the decrypted multipart to be a TextPart.");
Assert.IsInstanceOfType (typeof (MimePart), multipart[1], "Expected the second part of the decrypted multipart to be a MimePart.");
}
}
public void TestSimpleMbox ()
{
using (var stream = File.OpenRead ("../../TestData/mbox/simple.mbox.txt")) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
var message = parser.ParseMessage ();
Multipart multipart;
MimeEntity entity;
Assert.IsInstanceOfType (typeof (Multipart), message.Body);
multipart = (Multipart) message.Body;
Assert.AreEqual (1, multipart.Count);
entity = multipart[0];
Assert.IsInstanceOfType (typeof (Multipart), entity);
multipart = (Multipart) entity;
Assert.AreEqual (1, multipart.Count);
entity = multipart[0];
Assert.IsInstanceOfType (typeof (Multipart), entity);
multipart = (Multipart) entity;
Assert.AreEqual (1, multipart.Count);
entity = multipart[0];
Assert.IsInstanceOfType (typeof (TextPart), entity);
using (var memory = new MemoryStream ()) {
entity.WriteTo (UnixFormatOptions, memory);
var text = Encoding.ASCII.GetString (memory.ToArray ());
Assert.IsTrue (text.StartsWith ("Content-Type: text/plain\n\n", StringComparison.Ordinal), "Headers are not properly terminated.");
}
}
}
}
/// <summary>
/// Joins the specified message/partial parts into the complete message.
/// </summary>
/// <remarks>
/// Combines all of the message/partial fragments into its original,
/// complete, message.
/// </remarks>
/// <returns>The re-combined message.</returns>
/// <param name="options">The parser options to use.</param>
/// <param name="partials">The list of partial message parts.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="partials"/>is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.ArgumentException">
/// <para>The last partial does not have a Total.</para>
/// <para>-or-</para>
/// <para>The number of partials provided does not match the expected count.</para>
/// <para>-or-</para>
/// <para>One or more partials is missing.</para>
/// </exception>
public static MimeMessage Join (ParserOptions options, IEnumerable<MessagePartial> partials)
{
if (options == null)
throw new ArgumentNullException ("options");
if (partials == null)
throw new ArgumentNullException ("partials");
var parts = partials.ToList ();
if (parts.Count == 0)
return null;
parts.Sort (PartialCompare);
if (!parts[parts.Count - 1].Total.HasValue)
throw new ArgumentException ("The last partial does not have a Total.", "partials");
int total = parts[parts.Count - 1].Total.Value;
if (parts.Count != total)
throw new ArgumentException ("The number of partials provided does not match the expected count.", "partials");
string id = parts[0].Id;
using (var chained = new ChainedStream ()) {
// chain all of the partial content streams...
for (int i = 0; i < parts.Count; i++) {
int number = parts[i].Number.Value;
if (number != i + 1)
throw new ArgumentException ("One or more partials is missing.", "partials");
var content = parts[i].ContentObject;
chained.Add (content.Open ());
}
var parser = new MimeParser (options, chained);
return parser.ParseMessage ();
}
}
MimeMessage ParseMessage(CancellationToken cancellationToken)
{
if (parser == null)
parser = new MimeParser (ParserOptions.Default, engine.Stream);
else
parser.SetStream (ParserOptions.Default, engine.Stream);
return parser.ParseMessage (cancellationToken);
}
/// <summary>
/// Load a <see cref="MimeEntity"/> from the specified stream.
/// </summary>
/// <remarks>
/// Loads a <see cref="MimeEntity"/> from the given stream, using the
/// specified <see cref="ParserOptions"/>.
/// </remarks>
/// <returns>The parsed MIME entity.</returns>
/// <param name="options">The parser options.</param>
/// <param name="stream">The stream.</param>
/// <param name="cancellationToken">A cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="stream"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.FormatException">
/// There was an error parsing the entity.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
public static MimeEntity Load(ParserOptions options, Stream stream, CancellationToken cancellationToken)
{
if (options == null)
throw new ArgumentNullException ("options");
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new MimeParser (options, stream, MimeFormat.Entity);
return parser.ParseEntity (cancellationToken);
}
/// <summary>
/// Load a <see cref="MimeEntity"/> from the specified stream.
/// </summary>
/// <returns>The parsed MIME entity.</returns>
/// <param name="stream">The stream.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="stream"/> is <c>null</c>.
/// </exception>
public static MimeEntity Load(Stream stream)
{
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new MimeParser (stream, MimeFormat.Entity);
return parser.ParseEntity ();
}
//[Ignore]
public void TestDkimSignVerifyJwzMbox ()
{
using (var stream = File.OpenRead ("../../TestData/mbox/jwz.mbox.txt")) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
var message = parser.ParseMessage ();
TestDkimSignVerify (message, DkimSignatureAlgorithm.RsaSha1,
DkimCanonicalizationAlgorithm.Relaxed,
DkimCanonicalizationAlgorithm.Relaxed);
TestDkimSignVerify (message, DkimSignatureAlgorithm.RsaSha256,
DkimCanonicalizationAlgorithm.Relaxed,
DkimCanonicalizationAlgorithm.Simple);
TestDkimSignVerify (message, DkimSignatureAlgorithm.RsaSha1,
DkimCanonicalizationAlgorithm.Simple,
DkimCanonicalizationAlgorithm.Relaxed);
TestDkimSignVerify (message, DkimSignatureAlgorithm.RsaSha256,
DkimCanonicalizationAlgorithm.Simple,
DkimCanonicalizationAlgorithm.Simple);
}
}
}
public void TestReserialization ()
{
string rawMessageText = @"X-Andrew-Authenticated-As: 4099;greenbush.galaxy;Nathaniel Borenstein
Received: from Messages.8.5.N.CUILIB.3.45.SNAP.NOT.LINKED.greenbush.galaxy.sun4.41
via MS.5.6.greenbush.galaxy.sun4_41;
Fri, 12 Jun 1992 13:29:05 -0400 (EDT)
Message-ID : <*****@*****.**>
Date: Fri, 12 Jun 1992 13:29:05 -0400 (EDT)
From: Nathaniel Borenstein <nsb>
X-Andrew-Message-Size: 152+1
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary=""Interpart.Boundary.IeCBvV20M2YtEoUA0A""
To: Ned Freed <*****@*****.**>,
[email protected] (Yutaka Sato =?ISO-2022-JP?B?GyRAOjRGI0stGyhK?= )
Subject: MIME & int'l mail
> THIS IS A MESSAGE IN 'MIME' FORMAT. Your mail reader does not support MIME.
> Please read the first section, which is plain text, and ignore the rest.
--Interpart.Boundary.IeCBvV20M2YtEoUA0A
Content-type: text/plain; charset=US-ASCII
In honor of the Communications Week error about MIME's ability to handle
international character sets. a screen dump:
[An Andrew ToolKit view (mailobjv) was included here, but could not be
displayed.]
Just for fun.... -- Nathaniel
--Interpart.Boundary.IeCBvV20M2YtEoUA0A
Content-Type: multipart/mixed;
boundary=""Alternative.Boundary.IeCBvV20M2Yt4oU=wd""
--Alternative.Boundary.IeCBvV20M2Yt4oU=wd
Content-type: text/richtext; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
In honor of the <italic>Communications Week</italic> error about MIME's abilit=
y to handle international character sets. a screen dump:<nl>
<nl>
--Alternative.Boundary.IeCBvV20M2Yt4oU=wd
Content-type: image/gif
Content-Description: Some international characters
Content-Transfer-Encoding: base64
R0lGODdhEgLiAKEAAAAAAP///wAA////4CwAAAAAEgLiAAAC/oSPqcvtD6OctNqLs968
...
R+mUIAiVUTmCU0mVJmiVV5mCfaiVQtaUXVlKXwmWZiSWY3lDZWmWIISWaalUWcmW+bWW
b9lAcSmXCUSXdWlKbomX7HWXe4llXOmXQAmYgTmUg0mYRmmYh5mUscGYjemYjwmZkSmZ
k0mZlWmZl4mZqVEAADs=
--Alternative.Boundary.IeCBvV20M2Yt4oU=wd
Content-type: text/richtext; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
<nl>
<nl>
Just for fun.... -- Nathaniel<nl>
--Interpart.Boundary.IeCBvV20M2YtEoUA0A--
".Replace ("\r\n", "\n");
string result;
using (var source = new MemoryStream (Encoding.UTF8.GetBytes (rawMessageText))) {
var parser = new MimeParser (source, MimeFormat.Default);
var message = parser.ParseMessage ();
using (var serialized = new MemoryStream ()) {
var options = FormatOptions.Default.Clone ();
options.NewLineFormat = NewLineFormat.Unix;
message.WriteTo (options, serialized);
result = Encoding.UTF8.GetString (serialized.ToArray ());
}
}
Assert.AreEqual (rawMessageText, result, "Reserialized message is not identical to the original.");
}
/// <summary>
/// Load a <see cref="MimeMessage"/> from the specified stream.
/// </summary>
/// <remarks>
/// <para>Loads a <see cref="MimeMessage"/> from the given stream, using the
/// specified <see cref="ParserOptions"/>.</para>
/// <para>If <paramref name="persistent"/> is <c>true</c> and <paramref name="stream"/> is seekable, then
/// the <see cref="MimeParser"/> will not copy the content of <see cref="MimePart"/>s into memory. Instead,
/// it will use a <see cref="MimeKit.IO.BoundStream"/> to reference a substream of <paramref name="stream"/>.
/// This has the potential to not only save mmeory usage, but also improve <see cref="MimeParser"/>
/// performance.</para>
/// </remarks>
/// <returns>The parsed message.</returns>
/// <param name="options">The parser options.</param>
/// <param name="stream">The stream.</param>
/// <param name="persistent"><c>true</c> if the stream is persistent; otherwise <c>false</c>.</param>
/// <param name="cancellationToken">A cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="stream"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.FormatException">
/// There was an error parsing the entity.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
public static MimeMessage Load (ParserOptions options, Stream stream, bool persistent, CancellationToken cancellationToken = default (CancellationToken))
{
if (options == null)
throw new ArgumentNullException ("options");
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new MimeParser (options, stream, MimeFormat.Entity, persistent);
return parser.ParseMessage (cancellationToken);
}
void HandlePgpMime(Outlook.MailItem mailItem, Outlook.Attachment encryptedMime,
Outlook.Attachment sigMime, string sigHash = "sha1")
{
logger.Trace("> HandlePgpMime");
CryptoContext Context = null;
byte[] cyphertext = null;
byte[] clearbytes = null;
var cleartext = mailItem.Body;
// 1. Decrypt attachement
if (encryptedMime != null)
{
logger.Trace("Decrypting cypher text.");
var tempfile = Path.GetTempFileName();
encryptedMime.SaveAsFile(tempfile);
cyphertext = File.ReadAllBytes(tempfile);
File.Delete(tempfile);
clearbytes = DecryptAndVerify(mailItem.To, cyphertext, out Context);
if (clearbytes == null)
return;
cleartext = this._encoding.GetString(clearbytes);
}
// 2. Verify signature
if (sigMime != null)
{
Context = new CryptoContext(PasswordCallback, _settings.Cipher, _settings.Digest);
var Crypto = new PgpCrypto(Context);
var mailType = mailItem.BodyFormat;
try
{
logger.Trace("Verify detached signature");
var tempfile = Path.GetTempFileName();
sigMime.SaveAsFile(tempfile);
var detachedsig = File.ReadAllText(tempfile);
File.Delete(tempfile);
// Build up a clearsignature format for validation
// the rules for are the same with the addition of two heaer fields.
// Ultimately we need to get these fields out of email itself.
// NOTE: encoding could be uppercase or lowercase. Try both.
// this is definetly hacky :/
var encoding = GetEncodingFromMail(mailItem);
var body = string.Empty;
// Try two different methods to get the mime body
try
{
body = encoding.GetString(
(byte[])mailItem.PropertyAccessor.GetProperty(
"http://schemas.microsoft.com/mapi/string/{4E3A7680-B77A-11D0-9DA5-00C04FD65685}/Internet Charset Body/0x00000102"));
}
catch (Exception)
{
body = (string)mailItem.PropertyAccessor.GetProperty(
"http://schemas.microsoft.com/mapi/proptag/0x1000001F"); // PR_BODY
}
var clearsigUpper = new StringBuilder();
clearsigUpper.Append(string.Format("-----BEGIN PGP SIGNED MESSAGE-----\r\nHash: {0}\r\nCharset: {1}\r\n\r\n", sigHash, encoding.BodyName.ToUpper()));
clearsigUpper.Append("Content-Type: text/plain; charset=");
clearsigUpper.Append(encoding.BodyName.ToUpper());
clearsigUpper.Append("\r\nContent-Transfer-Encoding: quoted-printable\r\n\r\n");
clearsigUpper.Append(PgpClearDashEscapeAndQuoteEncode(body));
clearsigUpper.Append("\r\n");
clearsigUpper.Append(detachedsig);
var clearsigLower = new StringBuilder(clearsigUpper.Length);
clearsigLower.Append(string.Format("-----BEGIN PGP SIGNED MESSAGE-----\r\nHash: {0}\r\nCharset: {1}\r\n\r\n", sigHash, encoding.BodyName.ToUpper()));
clearsigLower.Append("Content-Type: text/plain; charset=");
clearsigLower.Append(encoding.BodyName.ToLower());
clearsigLower.Append("\r\nContent-Transfer-Encoding: quoted-printable\r\n\r\n");
clearsigLower.Append(PgpClearDashEscapeAndQuoteEncode(body));
clearsigLower.Append("\r\n");
clearsigLower.Append(detachedsig);
logger.Trace(clearsigUpper.ToString());
if (Crypto.VerifyClear(_encoding.GetBytes(clearsigUpper.ToString())) || Crypto.VerifyClear(_encoding.GetBytes(clearsigLower.ToString())))
{
Context = Crypto.Context;
var message = "** " + string.Format(Localized.MsgValidSig,
Context.SignedByUserId, Context.SignedByKeyId) + "\n\n";
if (mailType == Outlook.OlBodyFormat.olFormatPlain)
mailItem.Body = message + mailItem.Body;
else
mailItem.HTMLBody = AddMessageToHtmlBody(mailItem.HTMLBody, message);
}
else
{
Context = Crypto.Context;
var message = "** " + string.Format(Localized.MsgInvalidSig,
Context.SignedByUserId, Context.SignedByKeyId) + "\n\n";
if (mailType == Outlook.OlBodyFormat.olFormatPlain)
mailItem.Body = message + mailItem.Body;
else
mailItem.HTMLBody = AddMessageToHtmlBody(mailItem.HTMLBody, message);
}
}
catch (PublicKeyNotFoundException ex)
{
logger.Debug(ex.ToString());
Context = Crypto.Context;
var message = "** " + Localized.MsgSigMissingPubKey + "\n\n";
if (mailType == Outlook.OlBodyFormat.olFormatPlain)
mailItem.Body = message + mailItem.Body;
else
mailItem.HTMLBody = AddMessageToHtmlBody(mailItem.HTMLBody, message);
}
catch (Exception ex)
{
logger.Debug(ex.ToString());
WriteErrorData("VerifyEmail", ex);
MessageBox.Show(
ex.Message,
Localized.ErrorDialogTitle,
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
return;
}
if (Context == null)
return;
// Extract files from MIME data
MimeMessage msg = null;
TextPart textPart = null;
MimeEntity htmlPart = null;
var isHtml = false;
using(var sin = new MemoryStream(clearbytes))
{
var parser = new MimeParser(sin);
msg = parser.ParseMessage();
var iter = new MimeIterator(msg);
while(iter.MoveNext())
{
var part = iter.Current as TextPart;
if (part == null)
continue;
if (part.IsAttachment)
continue;
// message could include both text and html
// if we find html use that over text.
if (part.IsHtml)
{
htmlPart = part;
isHtml = true;
}
else
{
textPart = part;
}
}
}
var DecryptAndVerifyHeaderMessage = "** ";
if (Context.IsEncrypted)
DecryptAndVerifyHeaderMessage += Localized.MsgDecrypt + " ";
if (Context.FailedIntegrityCheck)
DecryptAndVerifyHeaderMessage += Localized.MsgFailedIntegrityCheck + " ";
if (Context.IsSigned && Context.SignatureValidated)
{
DecryptAndVerifyHeaderMessage += string.Format(Localized.MsgValidSig,
Context.SignedByUserId, Context.SignedByKeyId);
}
else if (Context.IsSigned)
{
DecryptAndVerifyHeaderMessage += string.Format(Localized.MsgInvalidSig,
Context.SignedByUserId, Context.SignedByKeyId);
}
else
DecryptAndVerifyHeaderMessage += Localized.MsgUnsigned;
DecryptAndVerifyHeaderMessage += "\n\n";
if(isHtml)
{
var htmlBody = msg.HtmlBody;
var related = msg.Body as MultipartRelated;
var doc = new HtmlAgilityPack.HtmlDocument();
var savedImages = new List<MimePart>();
doc.LoadHtml(htmlBody);
// Find any embedded images
foreach (var img in doc.DocumentNode.SelectNodes("//img[@src]"))
{
var src = img.Attributes["src"];
Uri uri;
if (src == null || src.Value == null)
continue;
// parse the <img src=...> attribute value into a Uri
if (Uri.IsWellFormedUriString(src.Value, UriKind.Absolute))
uri = new Uri(src.Value, UriKind.Absolute);
else
uri = new Uri(src.Value, UriKind.Relative);
// locate the index of the attachment within the multipart/related (if it exists)
string imageCid = src.Value.Substring(4);
var iter = new MimeIterator(msg);
MimePart attachment = null;
while (iter.MoveNext())
{
if (iter.Current.ContentId == imageCid)
{
attachment = iter.Current as MimePart;
break;
}
}
if (attachment == null)
continue;
string fileName;
// save the attachment (if we haven't already saved it)
if (!savedImages.Contains(attachment))
{
fileName = attachment.FileName;
if (string.IsNullOrEmpty(fileName))
fileName = Guid.NewGuid().ToString();
using (var stream = File.Create(fileName))
attachment.ContentObject.DecodeTo(stream);
try
{
var att = mailItem.Attachments.Add(fileName, Outlook.OlAttachmentType.olEmbeddeditem, null, "");
att.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/proptag/0x3712001E", imageCid);
savedImages.Add(attachment);
}
finally
{
// try not to leak temp files :)
File.Delete(fileName);
}
}
}
mailItem.BodyFormat = Outlook.OlBodyFormat.olFormatHTML;
mailItem.HTMLBody = AddMessageToHtmlBody(htmlBody, DecryptAndVerifyHeaderMessage);
}
else
{
// NOTE: For some reason we cannot change the BodyFormat once it's set.
// So if we are set to HTML we need to wrap the plain text so it's
// displayed okay. Also of course prevent XSS.
if (mailItem.BodyFormat == Outlook.OlBodyFormat.olFormatPlain)
{
mailItem.Body = DecryptAndVerifyHeaderMessage + msg.TextBody;
}
else
{
var sb = new StringBuilder(msg.TextBody.Length + 100);
sb.Append("<html><body><pre>");
sb.Append(WebUtility.HtmlEncode(DecryptAndVerifyHeaderMessage));
sb.Append(WebUtility.HtmlEncode(msg.TextBody));
sb.Append("</pre></body></html>");
mailItem.HTMLBody = sb.ToString();
}
}
// NOTE: Removing existing attachments is perminant, even if the message
// is not saved.
foreach (var mimeAttachment in msg.Attachments)
{
var fileName = mimeAttachment.FileName;
var tempFile = Path.Combine(Path.GetTempPath(), fileName);
using (var fout = File.OpenWrite(tempFile))
{
mimeAttachment.ContentObject.DecodeTo(fout);
}
mailItem.Attachments.Add(tempFile, Outlook.OlAttachmentType.olByValue, 1, fileName);
File.Delete(tempFile);
}
}
/// <summary>
/// Load a <see cref="MimeMessage"/> from the specified stream.
/// </summary>
/// <returns>The parsed message.</returns>
/// <param name="options">The parser options.</param>
/// <param name="stream">The stream.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="stream"/> is <c>null</c>.</para>
/// </exception>
public static MimeMessage Load(ParserOptions options, Stream stream)
{
if (options == null)
throw new ArgumentNullException ("options");
if (stream == null)
throw new ArgumentNullException ("stream");
var parser = new MimeParser (options, stream, MimeFormat.Entity);
return parser.ParseMessage ();
}
public MimeMessage ParseMessage(Stream stream, bool persistent, CancellationToken cancellationToken)
{
if (parser == null)
parser = new MimeParser (ParserOptions.Default, stream, persistent);
else
parser.SetStream (ParserOptions.Default, stream, persistent);
return parser.ParseMessage (cancellationToken);
}
public void TestJwzMbox ()
{
var summary = File.ReadAllText (Path.Combine (MboxDataDir, "jwz-summary.txt")).Replace ("\r\n", "\n");
var options = FormatOptions.Default.Clone ();
var original = new MemoryBlockStream ();
var output = new MemoryBlockStream ();
var builder = new StringBuilder ();
var expected = new byte[4096];
var buffer = new byte[4096];
int nx, n;
options.NewLineFormat = NewLineFormat.Unix;
using (var stream = File.OpenRead (Path.Combine (MboxDataDir, "jwz.mbox.txt"))) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
int count = 0;
while (!parser.IsEndOfStream) {
var message = parser.ParseMessage ();
builder.AppendFormat ("{0}", parser.MboxMarker).Append ('\n');
if (message.From.Count > 0)
builder.AppendFormat ("From: {0}", message.From).Append ('\n');
if (message.To.Count > 0)
builder.AppendFormat ("To: {0}", message.To).Append ('\n');
builder.AppendFormat ("Subject: {0}", message.Subject).Append ('\n');
builder.AppendFormat ("Date: {0}", DateUtils.FormatDate (message.Date)).Append ('\n');
DumpMimeTree (builder, message);
builder.Append ('\n');
var marker = Encoding.UTF8.GetBytes ((count > 0 ? "\n" : string.Empty) + parser.MboxMarker + "\n");
output.Write (marker, 0, marker.Length);
message.WriteTo (options, output);
count++;
}
}
string actual = builder.ToString ();
// WORKAROUND: Mono's iso-2022-jp decoder breaks on this input in versions <= 3.2.3 but is fixed in 3.2.4+
string iso2022jp = Encoding.GetEncoding ("iso-2022-jp").GetString (Convert.FromBase64String ("GyRAOjRGI0stGyhK"));
if (iso2022jp != "佐藤豊")
actual = actual.Replace (iso2022jp, "佐藤豊");
Assert.AreEqual (summary, actual, "Summaries do not match for jwz.mbox");
using (var stream = File.OpenRead (Path.Combine (MboxDataDir, "jwz.mbox.txt"))) {
using (var filtered = new FilteredStream (original)) {
filtered.Add (new Dos2UnixFilter ());
stream.CopyTo (filtered);
filtered.Flush ();
}
}
original.Position = 0;
output.Position = 0;
Assert.AreEqual (original.Length, output.Length, "The length of the mbox did not match.");
do {
var position = original.Position;
nx = original.Read (expected, 0, expected.Length);
n = output.Read (buffer, 0, buffer.Length);
if (nx == 0)
break;
for (int i = 0; i < nx; i++) {
if (buffer[i] == expected[i])
continue;
var strExpected = CharsetUtils.Latin1.GetString (expected, 0, nx);
var strActual = CharsetUtils.Latin1.GetString (buffer, 0, n);
Assert.AreEqual (strExpected, strActual, "The mbox differs at position {0}", position + i);
}
} while (true);
}
public void TestUnmungedFromLines ()
{
int count = 0;
using (var stream = File.OpenRead ("../../TestData/mbox/unmunged.mbox.txt")) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
parser.ParseMessage ();
var marker = parser.MboxMarker;
if ((count % 2) == 0) {
Assert.AreEqual ("From -", marker.TrimEnd (), "Message #{0}", count);
} else {
Assert.AreEqual ("From Russia with love", marker.TrimEnd (), "Message #{0}", count);
}
count++;
}
}
Assert.AreEqual (4, count, "Expected to find 4 messages.");
}
public void TestSecureMimeVerifyThunderbird ()
{
MimeMessage message;
using (var file = File.OpenRead (Path.Combine ("..", "..", "TestData", "smime", "thunderbird-signed.txt"))) {
var parser = new MimeParser (file, MimeFormat.Default);
message = parser.ParseMessage ();
}
using (var ctx = CreateContext ()) {
var multipart = (MultipartSigned) message.Body;
var protocol = multipart.ContentType.Parameters["protocol"];
Assert.IsTrue (ctx.Supports (protocol), "The multipart/signed protocol is not supported.");
Assert.IsInstanceOfType (typeof (ApplicationPkcs7Signature), multipart[1], "The second child is not a detached signature.");
var signatures = multipart.Verify (ctx);
Assert.AreEqual (1, signatures.Count, "Verify returned an unexpected number of signatures.");
foreach (var signature in signatures) {
try {
bool valid = signature.Verify ();
Assert.IsTrue (valid, "Bad signature from {0}", signature.SignerCertificate.Email);
} catch (DigitalSignatureVerifyException ex) {
Assert.Fail ("Failed to verify signature: {0}", ex);
}
var algorithms = ((SecureMimeDigitalSignature) signature).EncryptionAlgorithms;
Assert.AreEqual (EncryptionAlgorithm.Aes256, algorithms[0], "Expected AES-256 capability");
Assert.AreEqual (EncryptionAlgorithm.Aes128, algorithms[1], "Expected AES-128 capability");
Assert.AreEqual (EncryptionAlgorithm.TripleDes, algorithms[2], "Expected Triple-DES capability");
Assert.AreEqual (EncryptionAlgorithm.RC2128, algorithms[3], "Expected RC2-128 capability");
Assert.AreEqual (EncryptionAlgorithm.RC264, algorithms[4], "Expected RC2-64 capability");
Assert.AreEqual (EncryptionAlgorithm.Des, algorithms[5], "Expected DES capability");
Assert.AreEqual (EncryptionAlgorithm.RC240, algorithms[6], "Expected RC2-40 capability");
}
}
}
public void TestEmptyMultipartAlternative ()
{
string expected = @"Content-Type: multipart/mixed
Content-Type: multipart/alternative
Content-Type: text/plain
".Replace ("\r\n", "\n");
using (var stream = File.OpenRead (Path.Combine (MessagesDataDir, "empty-multipart.txt"))) {
var parser = new MimeParser (stream, MimeFormat.Entity);
var message = parser.ParseMessage ();
var builder = new StringBuilder ();
DumpMimeTree (builder, message);
Assert.AreEqual (expected, builder.ToString (), "Unexpected MIME tree structure.");
}
}
public void TestReserializationEmptyParts ()
{
string rawMessageText = @"Date: Fri, 22 Jan 2016 8:44:05 -0500 (EST)
From: MimeKit Unit Tests <*****@*****.**>
To: MimeKit Unit Tests <*****@*****.**>
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary=""Interpart.Boundary.IeCBvV20M2YtEoUA0A""
Subject: Reserialization test of empty mime parts
THIS IS A MESSAGE IN 'MIME' FORMAT. Your mail reader does not support MIME.
Please read the first section, which is plain text, and ignore the rest.
--Interpart.Boundary.IeCBvV20M2YtEoUA0A
Content-type: text/plain; charset=US-ASCII
This is the body.
--Interpart.Boundary.IeCBvV20M2YtEoUA0A
Content-type: text/plain; charset=US-ASCII; name=empty.txt
Content-Description: this part contains no content
--Interpart.Boundary.IeCBvV20M2YtEoUA0A
Content-type: text/plain; charset=US-ASCII; name=blank-line.txt
Content-Description: this part contains a single blank line
--Interpart.Boundary.IeCBvV20M2YtEoUA0A--
".Replace ("\r\n", "\n");
string result;
using (var source = new MemoryStream (Encoding.UTF8.GetBytes (rawMessageText))) {
var parser = new MimeParser (source, MimeFormat.Default);
var message = parser.ParseMessage ();
using (var serialized = new MemoryStream ()) {
var options = FormatOptions.Default.Clone ();
options.NewLineFormat = NewLineFormat.Unix;
message.WriteTo (options, serialized);
result = Encoding.UTF8.GetString (serialized.ToArray ());
}
}
Assert.AreEqual (rawMessageText, result, "Reserialized message is not identical to the original.");
}
public void TestSecureMimeDecryptVerifyThunderbird ()
{
var p12 = Path.Combine ("..", "..", "TestData", "smime", "gnome.p12");
MimeMessage message;
if (!File.Exists (p12))
return;
using (var file = File.OpenRead (Path.Combine ("..", "..", "TestData", "smime", "thunderbird-signed-encrypted.txt"))) {
var parser = new MimeParser (file, MimeFormat.Default);
message = parser.ParseMessage ();
}
using (var ctx = CreateContext ()) {
var encrypted = (ApplicationPkcs7Mime) message.Body;
MimeEntity decrypted = null;
using (var file = File.OpenRead (p12)) {
ctx.Import (file, "no.secret");
}
var type = encrypted.ContentType.Parameters["smime-type"];
Assert.AreEqual ("enveloped-data", type, "Unexpected smime-type parameter.");
try {
decrypted = encrypted.Decrypt (ctx);
} catch (Exception ex) {
Console.WriteLine (ex);
Assert.Fail ("Failed to decrypt thunderbird message: {0}", ex);
}
// The decrypted part should be a multipart/signed
Assert.IsInstanceOfType (typeof (MultipartSigned), decrypted, "Expected the decrypted part to be a multipart/signed.");
var signed = (MultipartSigned) decrypted;
// The first part of the multipart/signed should be a multipart/mixed with a text/plain part and 2 image attachments,
// very much like the thunderbird-signed.txt message.
Assert.IsInstanceOfType (typeof (Multipart), signed[0], "Expected the first part of the multipart/signed to be a multipart.");
Assert.IsInstanceOfType (typeof (ApplicationPkcs7Signature), signed[1], "Expected second part of the multipart/signed to be a pkcs7-signature.");
var multipart = (Multipart) signed[0];
Assert.IsInstanceOfType (typeof (TextPart), multipart[0], "Expected the first part of the decrypted multipart to be a TextPart.");
Assert.IsInstanceOfType (typeof (MimePart), multipart[1], "Expected the second part of the decrypted multipart to be a MimePart.");
Assert.IsInstanceOfType (typeof (MimePart), multipart[2], "Expected the third part of the decrypted multipart to be a MimePart.");
var signatures = signed.Verify (ctx);
Assert.AreEqual (1, signatures.Count, "Verify returned an unexpected number of signatures.");
foreach (var signature in signatures) {
try {
bool valid = signature.Verify ();
Assert.IsTrue (valid, "Bad signature from {0}", signature.SignerCertificate.Email);
} catch (DigitalSignatureVerifyException ex) {
Assert.Fail ("Failed to verify signature: {0}", ex);
}
var algorithms = ((SecureMimeDigitalSignature) signature).EncryptionAlgorithms;
Assert.AreEqual (EncryptionAlgorithm.Aes256, algorithms[0], "Expected AES-256 capability");
Assert.AreEqual (EncryptionAlgorithm.Aes128, algorithms[1], "Expected AES-128 capability");
Assert.AreEqual (EncryptionAlgorithm.TripleDes, algorithms[2], "Expected Triple-DES capability");
Assert.AreEqual (EncryptionAlgorithm.RC2128, algorithms[3], "Expected RC2-128 capability");
Assert.AreEqual (EncryptionAlgorithm.RC264, algorithms[4], "Expected RC2-64 capability");
Assert.AreEqual (EncryptionAlgorithm.Des, algorithms[5], "Expected DES capability");
Assert.AreEqual (EncryptionAlgorithm.RC240, algorithms[6], "Expected RC2-40 capability");
}
}
}
/// <summary>
/// Join the specified message/partial parts into the complete message.
/// </summary>
/// <param name="options">The parser options to use.</param>
/// <param name="partials">The list of partial message parts.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="options"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="partials"/>is <c>null</c>.</para>
/// </exception>
public static MimeMessage Join(ParserOptions options, IEnumerable<MessagePartial> partials)
{
if (options == null)
throw new ArgumentNullException ("options");
if (partials == null)
throw new ArgumentNullException ("partials");
var parts = partials.ToList ();
if (parts.Count == 0)
return null;
parts.Sort (PartialCompare);
if (!parts[parts.Count - 1].Total.HasValue)
throw new ArgumentException ("partials");
int total = parts[parts.Count - 1].Total.Value;
if (parts.Count != total)
throw new ArgumentException ("partials");
string id = parts[0].Id;
using (var chained = new ChainedStream ()) {
// chain all of the partial content streams...
for (int i = 0; i < parts.Count; i++) {
int number = parts[i].Number.Value;
if (number != i + 1)
throw new ArgumentException ("partials");
var content = parts[i].ContentObject;
content.Stream.Seek (0, SeekOrigin.Begin);
var filtered = new FilteredStream (content.Stream);
filtered.Add (DecoderFilter.Create (content.Encoding));
chained.Add (filtered);
}
var parser = new MimeParser (options, chained);
return parser.ParseMessage ();
}
}
public void TestJwzPersistentMbox ()
{
var summary = File.ReadAllText ("../../TestData/mbox/jwz-summary.txt").Replace ("\r\n", "\n");
var builder = new StringBuilder ();
using (var stream = File.OpenRead ("../../TestData/mbox/jwz.mbox.txt")) {
var parser = new MimeParser (stream, MimeFormat.Mbox);
while (!parser.IsEndOfStream) {
var message = parser.ParseMessage ();
builder.AppendFormat ("{0}", parser.MboxMarker).Append ('\n');
if (message.From.Count > 0)
builder.AppendFormat ("From: {0}", message.From).Append ('\n');
if (message.To.Count > 0)
builder.AppendFormat ("To: {0}", message.To).Append ('\n');
builder.AppendFormat ("Subject: {0}", message.Subject).Append ('\n');
builder.AppendFormat ("Date: {0}", DateUtils.FormatDate (message.Date)).Append ('\n');
DumpMimeTree (builder, message);
builder.Append ('\n');
// Force the various MimePart objects to write their content streams.
// The idea is that by forcing the MimeParts to seek in their content,
// we will test to make sure that parser correctly deals with it.
message.WriteTo (Stream.Null);
}
}
string actual = builder.ToString ();
// WORKAROUND: Mono's iso-2022-jp decoder breaks on this input in versions <= 3.2.3 but is fixed in 3.2.4+
string iso2022jp = Encoding.GetEncoding ("iso-2022-jp").GetString (Convert.FromBase64String ("GyRAOjRGI0stGyhK"));
if (iso2022jp != "佐藤豊")
actual = actual.Replace (iso2022jp, "佐藤豊");
Assert.AreEqual (summary, actual, "Summaries do not match for jwz.mbox");
}