/// <summary>
/// Download email messages from the POP3 server for a given Foe message processor.
/// </summary>
/// <param name="server">POP3 server information</param>
/// <param name="processorEmail">The current Foe message processor's email address.</param>
public static void DownloadMessages(PopServer server, string processorEmail)
{
// connect to POP3 server and download messages
//FoeDebug.Print("Connecting to POP3 server...");
POPClient popClient = new POPClient();
popClient.IsUsingSsl = server.SslEnabled;
popClient.Disconnect();
popClient.Connect(server.ServerName, server.Port);
popClient.Authenticate(server.UserName, server.Password);
FoeDebug.Print("Connected to POP3.");
// get mail count
int count = popClient.GetMessageCount();
FoeDebug.Print("Server reported " + count.ToString() + " messages.");
// go through each message, from newest to oldest
for (int i = count; i >= 1; i -= 1)
{
//FoeDebug.Print("Opening mail message...");
OpenPOP.MIMEParser.Message msg = popClient.GetMessage(i, true);
if (msg != null)
{
// Get subject and verify sender identity
// Subject line in the mail header should look like one of the followings:
//
// Normal request (for news feed and content):
// Subject: Request <Request ID> by <User ID>
//
// Registration request:
// Subject: Register <Request ID> by Newbie
//
// where:
// Request ID is the request ID generated by the Foe client
// User ID is the user's ID as assigned by the server
//FoeDebug.Print("Message is not null. Getting message details.");
string subject = msg.Subject;
string fromEmail = msg.FromEmail;
//FoeDebug.Print("Subject: " + subject);
//FoeDebug.Print("From: " + fromEmail);
// parse subject line
string[] tokens = subject.Trim().Split(new char[] { ' ' });
if (tokens.Length == 4)
{
// check what type of request is it
string requestType = tokens[0].ToUpper();
string requestId = tokens[1];
string userId = tokens[3];
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"subject: " + subject + "requestType: " + requestType);
if (requestType.ToUpper().CompareTo("REGISTE") == 0)
{
//FoeDebug.Print("This is a registration message.");
// It's a registration request
SaveRegistrationRequest(requestId, fromEmail, processorEmail);
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"Received registration request from " + fromEmail);
}
else if (requestType.ToUpper().CompareTo("CATALOG") == 0)
{
// get user info by email address
FoeUser user = FoeServerUser.GetUser(fromEmail);
// verify user's email against the user ID
if ((user != null) && (userId == user.UserId) && (processorEmail == user.ProcessorEmail))
{
FoeDebug.Print("User verified.");
// the user's identity is verified
SaveCatalogRequest(requestId, user.Email, processorEmail);
}
else
{
//FoeDebug.Print("User is not registered. Request not processed.");
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Warning,
"Received content request from unregistered user " + fromEmail);
}
}
else if (requestType.ToUpper().CompareTo("CONTENT") == 0)
{
//FoeDebug.Print("This is a content request message.");
// It's a content request.
// We need to verify the user's identify first.
//FoeDebug.Print("Verifying user identity...");
// get user info by email address
FoeUser user = FoeServerUser.GetUser(fromEmail);
// verify user's email against the user ID
if ((user != null) && (userId == user.UserId) && (processorEmail == user.ProcessorEmail))
{
FoeDebug.Print("User verified.");
// the user's identity is verified
// get the full message body
OpenPOP.MIMEParser.Message wholeMsg = popClient.GetMessage(i, false);
string msgBody = (string)wholeMsg.MessageBody[0];
try
{
// decompress it
byte[] compressedMsg = Convert.FromBase64String(msgBody);
byte[] decompressedMsg = CompressionManager.Decompress(compressedMsg);
string foe = Encoding.UTF8.GetString(decompressedMsg);
string[] catalogs = foe.Trim().Split(new char[] { ',' });
// save request
if (catalogs.Length == 0)
{
return;
}
SaveContentRequest(requestId, user.Email, catalogs, processorEmail);
//FoeDebug.Print("Request saved and pending processing.");
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"Received content request from verified user " + fromEmail);
}
catch (Exception except)
{
// the message is likely malformed
// so just ignore it
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Warning,
"Received malformed content request from verified user " + fromEmail + "\r\n" +
except.ToString() +
"Raw message:\r\n" + msgBody + "\r\n");
//throw except;
}
}
else
{
//FoeDebug.Print("User is not registered. Request not processed.");
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Warning,
"Received content request from unregistered user " + fromEmail);
}
}
else if (requestType.ToUpper().CompareTo("FEED") == 0)
{
//FoeDebug.Print("This is a content request message.");
// It's a content request.
// We need to verify the user's identify first.
//FoeDebug.Print("Verifying user identity...");
// get user info by email address
FoeUser user = FoeServerUser.GetUser(fromEmail);
// verify user's email against the user ID
if ((user != null) && (userId == user.UserId) && (processorEmail == user.ProcessorEmail))
{
FoeDebug.Print("User verified.");
// the user's identity is verified
// get the full message body
OpenPOP.MIMEParser.Message wholeMsg = popClient.GetMessage(i, false);
string msgBody = (string)wholeMsg.MessageBody[0];
try
{
// decompress it
byte[] compressedMsg = Convert.FromBase64String(msgBody);
byte[] decompressedMsg = CompressionManager.Decompress(compressedMsg);
string foe = Encoding.UTF8.GetString(decompressedMsg);
string[] array = foe.Trim().Split(new char[] { ',' });
// save request
if (array.Length == 0)
{
return;
}
SaveFeedRequest(requestId, user.Email, array, processorEmail);
//FoeDebug.Print("Request saved and pending processing.");
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"Received feed request from verified user " + fromEmail);
}
catch (Exception except)
{
// the message is likely malformed
// so just ignore it
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Warning,
"Received malformed feed request from verified user " + fromEmail + "\r\n" +
except.ToString() +
"Raw message:\r\n" + msgBody + "\r\n");
//throw except;
}
}
else
{
//FoeDebug.Print("User is not registered. Request not processed.");
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Warning,
"Received content request from unregistered user " + fromEmail);
}
}
else
{
// Non-Foe message
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"Received non-Foe message from " + fromEmail);
}
}
else
{
// Non-Foe message
FoeServerLog.Add(_className + ".DownloadMessages", FoeServerLog.LogType.Message,
"Received non-Foe message from " + fromEmail);
}
// Delete the current message
popClient.DeleteMessage(i);
}
}
popClient.Disconnect();
}
public static void SendRssCache(string catalogCode, string userEmail, string requestId, bool isAutoSubscription)
{
// Load RSS
string rss = FoeServerCatalog.GetRssCache(catalogCode);
if (rss == null)
{
throw new Exception("RSS feed " + catalogCode + " does not exist.");
}
// Load User info
FoeUser user = FoeServerUser.GetUser(userEmail);
if (user == null)
{
throw new Exception("User " + userEmail + " does not exist.");
}
// Prepare Foe Message
/*
* string rssBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(feed.Rss));
* FoeMessage foeMessage = new FoeMessage();
* foeMessage.Add(new FoeMessageItem("CatalogCode", feed.Code));
* foeMessage.Add(new FoeMessageItem("Rss", rssBase64));
*/
FoeDebug.Print("Generated Foe Message.");
// Send reply to user
try
{
FoeServerMessage.SendMessage(
FoeServerMessage.GetDefaultSmtpServer(),
FoeServerRegistry.Get("ProcessorEmail"),
userEmail,
SubjectGenerator.ReplySubject(RequestType.Content, catalogCode, requestId, FoeServerUser.GetUser(userEmail).UserId),
rss);
FoeDebug.Print("Sent reply to user.");
// Add user to auto-subscription list
if (!isAutoSubscription)
{
FoeServerAutoSubscribe.Add(userEmail, catalogCode, requestId);
}
else
{
// If the caller function is just processing AutoSubscription, then
// we don't want to recreate the subscription, simply update the
// current subscription.
FoeServerAutoSubscribe.Update(userEmail, catalogCode, requestId);
}
FoeDebug.Print("Added user to Auto Subscription.");
}
catch (Exception except)
{
FoeDebug.Print("FoeServerCatalog: Error sending email.");
FoeDebug.Print(except.ToString());
}
}