public void ParseMultipleValidEmails(string email)
{
void verify(EmailAddress[] addr, params string[] expectedNames)
{
addr.Should().HaveCount(2);
for (int i = 0; i < addr.Length; i++)
{
addr[i].Email.Should().Be(email);
addr[i].Name.Should().Be(expectedNames[i]);
}
}
verify(EmailAddressParser.ParseEmailAddresses($"\"First, middle, lastname\" <{email}>, \"Second\" <{email}>"), "First, middle, lastname", "Second");
verify(EmailAddressParser.ParseEmailAddresses($"\"First, middle, lastname\" <{email}>, \"First\" <{email}>"), "First, middle, lastname", "First");
verify(EmailAddressParser.ParseEmailAddresses($"\"First, middle, lastname\" <{email}>, {email}"), "First, middle, lastname", "");
}
/// <summary>
/// Parses a raw multipart form from the stream as a sendgrid email according to https://sendgrid.com/docs/for-developers/parsing-email/setting-up-the-inbound-parse-webhook/#default-parameters
/// Adapted from https://github.com/KoditkarVedant/sendgrid-inbound
/// </summary>
public Email Parse(MemoryStream body)
{
var parser = MultipartFormDataParser.Parse(body, Encoding.UTF8);
var charsets = JObject.Parse(parser.GetParameterValue("charsets", "{}"))
.Properties()
.ToDictionary(p => p.Name, p => Encoding.GetEncoding(p.Value.ToString()));
var rawHeaders = parser
.GetParameterValue("headers", "")
.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.RemoveEmptyEntries);
var headers = rawHeaders
.Select(header =>
{
var splitHeader = header.Split(new[] { ": " }, StringSplitOptions.RemoveEmptyEntries);
var key = splitHeader[0];
var value = splitHeader.Length > 1 ? splitHeader[1] : null;
return(new KeyValuePair <string, string>(key, value));
}).ToArray();
// Create a dictionary of parsers, one parser for each desired encoding.
// This is necessary because MultipartFormDataParser can only handle one
// encoding and SendGrid can use different encodings for parameters such
// as "from", "to", "text" and "html".
var encodedParsers = charsets
.Where(c => c.Value != Encoding.UTF8)
.Select(c => c.Value)
.Distinct()
.Select(encoding =>
{
body.Position = 0;
return(new
{
Encoding = encoding,
Parser = MultipartFormDataParser.Parse(body, encoding)
});
})
.Union(new[]
{
new { Encoding = Encoding.UTF8, Parser = parser }
})
.ToDictionary(ep => ep.Encoding, ep => ep.Parser);
// convert the raw formats so we can apply the correct encoders. the pre-parsed Sendgrid values (in Envelope) are forced to UTF-8
var rawFrom = GetEncodedValue("from", charsets, encodedParsers, string.Empty);
var from = EmailAddressParser.ParseEmailAddress(rawFrom);
var rawTo = GetEncodedValue("to", charsets, encodedParsers, string.Empty);
var to = EmailAddressParser.ParseEmailAddresses(rawTo);
var rawCc = GetEncodedValue("cc", charsets, encodedParsers, string.Empty);
var cc = EmailAddressParser.ParseEmailAddresses(rawCc);
// will have attachment1...attachmentX properties depending on attachment count
// conver to array
var attachmentInfoAsJObject = JObject.Parse(parser.GetParameterValue("attachment-info", "{}"));
var attachments = attachmentInfoAsJObject
.Properties()
.Select(prop =>
{
var attachment = prop.Value.ToObject <EmailAttachment>();
attachment.Id = prop.Name;
var file = parser.Files.FirstOrDefault(f => f.Name == prop.Name);
if (file != null)
{
attachment.Base64Data = file.Data.ConvertToBase64();
if (string.IsNullOrEmpty(attachment.ContentType))
{
attachment.ContentType = file.ContentType;
}
if (string.IsNullOrEmpty(attachment.FileName))
{
attachment.FileName = file.FileName;
}
}
return(attachment);
}).ToArray();
return(new Email
{
// serializer friendly format
Charsets = charsets.ToDictionary(p => p.Key, p => p.Value.WebName),
Headers = headers,
From = from,
To = to,
Cc = cc,
Subject = GetEncodedValue("subject", charsets, encodedParsers, null),
Html = GetEncodedValue("html", charsets, encodedParsers, null),
Text = GetEncodedValue("text", charsets, encodedParsers, null),
Attachments = attachments,
SenderIp = GetEncodedValue("sender_ip", charsets, encodedParsers, null),
SpamReport = GetEncodedValue("spam_report", charsets, encodedParsers, null),
SpamScore = GetEncodedValue("spam_score", charsets, encodedParsers, null),
Dkim = GetEncodedValue("dkim", charsets, encodedParsers, null),
Spf = GetEncodedValue("SPF", charsets, encodedParsers, null)
});
}
