public static string CidToFilePath(string body, WebMailOptions options)
{
if (!options.Attachments.Any())
return body;
var newBody = Regex.Replace(body, "src=\"(?<link>[^\"]*)\"", src =>
{
string value = src.Groups["link"].Value;
if (!value.StartsWith("cid:"))
return src.Value;
string cid = value.After("cid:");
EmailAttachmentEntity only = options.Attachments.Where(a => a.ContentId == cid).Only();
if (only != null)
return "src=\"{0}\"".FormatWith(options.Url.Content(only.File.FullWebPath));
string fileName = cid.TryBefore('@');
if (fileName == null)
return src.Value;
only = options.Attachments.Where(a => a.File.FileName == fileName).Only();
if (only != null)
return "src=\"{0}\"".FormatWith(options.Url.Content(only.File.FullWebPath));
return src.Value;
});
return newBody;
}
public static string AssertNoUntrusted(string body, WebMailOptions options)
{
if (options.UntrustedImage == null)
return body;
string imageUrl = options.Url.Content(options.UntrustedImage);
if (body.Contains(imageUrl))
throw new InvalidOperationException("{0} found when saving the Email".FormatWith(imageUrl));
return body;
}
public static string GetWebMailBody(string body, WebMailOptions options)
{
if (body == null)
{
return(null);
}
foreach (var f in TasksGetWebMailBody.GetInvocationListTyped())
{
body = f(body, options);
}
return(body);
}
public static string AssertNoUntrusted(string body, WebMailOptions options)
{
if (options.UntrustedImage == null)
{
return(body);
}
string imageUrl = options.Url.Content(options.UntrustedImage);
if (body.Contains(imageUrl))
{
throw new InvalidOperationException("{0} found when saving the Email".FormatWith(imageUrl));
}
return(body);
}
public static string ReplaceUntrusted(string body, WebMailOptions options)
{
if (options.UntrustedImage == null)
{
return(body);
}
var result = Regex.Replace(body, @"<img [^>]*>", (Match img) =>
{
string prevSource = null;
var newImg = Regex.Replace(img.Value, "src=\"(?<link>[^\"]*)\"", src =>
{
var value = src.Groups["link"].Value;
if (!value.StartsWith("cid:"))
{
options.HasUntrusted = true;
prevSource = value;
return("src=\"{0}\"".FormatWith(options.Url.Content(options.UntrustedImage)));
}
return(src.Value);
});
if (prevSource == null)
{
return(newImg);
}
var title = prevSource;
var alt = Regex.Match(img.Value, "alt=\"(?<alt>[^\"]*)\"");
if (alt.Success && alt.Groups["alt"].Value.HasText())
{
title = alt.Groups["alt"].Value + "\r\n" + title;
}
return(newImg.Insert("<img ".Length, "title=\"" + title + "\" "));
});
return(result);
}
public static string CidToFilePath(string body, WebMailOptions options)
{
if (!options.Attachments.Any())
{
return(body);
}
var newBody = Regex.Replace(body, "src=\"(?<link>[^\"]*)\"", src =>
{
string value = src.Groups["link"].Value;
if (!value.StartsWith("cid:"))
{
return(src.Value);
}
string cid = value.After("cid:");
EmailAttachmentEmbedded only = options.Attachments.Where(a => a.ContentId == cid).Only();
if (only != null)
{
return("src=\"{0}\"".FormatWith(options.Url.Content(only.File.FullWebPath())));
}
string fileName = cid.TryBefore('@');
if (fileName == null)
{
return(src.Value);
}
only = options.Attachments.Where(a => a.File.FileName == fileName).Only();
if (only != null)
{
return("src=\"{0}\"".FormatWith(options.Url.Content(only.File.FullWebPath())));
}
return(src.Value);
});
return(newBody);
}
public static string FilePathToCid(string body, WebMailOptions options)
{
if (!options.Attachments.Any())
{
return(body);
}
var dic = options.Attachments.Where(a => a.File.FullWebPath().HasText()).ToDictionary(a => options.Url.Content(a.File.FullWebPath()), a => a.ContentId);
return(Regex.Replace(body, "src=\"(?<link>[^\"]*)\"", m =>
{
var value = m.Groups["link"].Value;
var link = dic.TryGetC(value);
if (link == null)
{
return m.Value;
}
return "src=\"cid:{0}\"".FormatWith(link);
}));
}
public static string ReplaceUntrusted(string body, WebMailOptions options)
{
if (options.UntrustedImage == null)
return body;
var result = Regex.Replace(body, @"<img [^>]*>", (Match img) =>
{
string prevSource = null;
var newImg = Regex.Replace(img.Value, "src=\"(?<link>[^\"]*)\"", src =>
{
var value = src.Groups["link"].Value;
if (!value.StartsWith("cid:"))
{
options.HasUntrusted = true;
prevSource = value;
return "src=\"{0}\"".FormatWith(options.Url.Content(options.UntrustedImage));
}
return src.Value;
});
if (prevSource == null)
return newImg;
var title = prevSource;
var alt = Regex.Match(img.Value, "alt=\"(?<alt>[^\"]*)\"");
if (alt.Success && alt.Groups["alt"].Value.HasText())
title = alt.Groups["alt"].Value + "\r\n" + title;
return newImg.Insert("<img ".Length, "title=\"" + title + "\" ");
});
return result;
}
public static string GetWebMailBody(string body, WebMailOptions options)
{
if (body == null)
return null;
foreach (var f in TasksGetWebMailBody.GetInvocationListTyped())
body = f(body, options);
return body;
}
public static string FilePathToCid(string body, WebMailOptions options)
{
if (!options.Attachments.Any())
return body;
var dic = options.Attachments.Where(a => a.File.FullWebPath.HasText()).ToDictionary(a => options.Url.Content(a.File.FullWebPath), a => a.ContentId);
return Regex.Replace(body, "src=\"(?<link>[^\"]*)\"", m =>
{
var value = m.Groups["link"].Value;
var link = dic.TryGetC(value);
if (link == null)
return m.Value;
return "src=\"cid:{0}\"".FormatWith(link);
});
}