//authenticate state
public static string ReturnSelectedResponse(string tag, string argument, ref string state, string userSession, ref string userMailBox)
{
var math = Regex.Match(argument, "^(\"(?:[^\"]*)\"|(?:[^\\s]+))");
// kiểm tra đối số lệnh select
if (!math.Success)
{
return(Response.ReturnParseErrorResponse(tag, "SELECT"));
}
string mailbox = math.Groups[1].Value.Replace("\"", "");
//truy xuất thông tin về mailbox từ ImapDB
List <MailBoxInfo> mailBoxInfo = SqliteQuery.LoadMailBoxInfo(userSession, mailbox);
//báo lỗi nếu mailbox không tồn tại
if (mailBoxInfo.Count == 0)
{
return(tag + " NO Mailbox does not exist");
}
// thay đổi trạng thái sang selected state
state = "selected";
// gán usermailbox cho session
userMailBox = mailbox;
// gán thông tin trả về vào response
string respose = "";
respose += $"* {mailBoxInfo[0].mailexists} EXISTS\r\n";
respose += $"* {mailBoxInfo[0].recent} RECENT\r\n";
if (mailBoxInfo[0].firstunseen > 0)
{
respose += $"* OK [UNSEEN {mailBoxInfo[0].firstunseen}] Message {mailBoxInfo[0].firstunseen} is first unseen\r\n";
}
respose += $"* OK [UIDVALIDITY {mailBoxInfo[0].uidvalidity}] UIDs valid\r\n";
respose += $"* OK [UIDNEXT {mailBoxInfo[0].uidnext}] Predicted next UID\r\n";
respose += @"* FLAGS (\Answered \Flagged \Deleted \Seen \Draft)" + "\r\n";
respose += @"* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft)] " + "\r\n";
respose += tag + " OK [READ-WRITE] SELECT completed";
int success;
if (mailBoxInfo[0].recent != 0)
{
success = SqliteQuery.UpdateRecentFlag(userSession, userMailBox);
}
return(respose);
}
public static string ReturnLsubResponse(string tag, string argument, string userSession)
{
string response = "";
string root = Environment.CurrentDirectory + $"\\ImapMailBox\\{userSession}\\";
var math = Regex.Match(argument, "^(\"(?:[^\"]*)\"|(?:[^\\s]+)) (\"(?:[^\"]*)\"|(?:[^\\s]+))");
if (!math.Success)
{
return(Response.ReturnParseErrorResponse(tag, "LSUB"));
}
// lấy reference từ group
string reference = math.Groups[1].Value.Replace("\"", "");
string dir = root;
if (Regex.IsMatch(reference, @"^(./)?.*"))
{
dir += reference.Replace("./", "");
}
// lấy mailboxName từ group
string mailboxName = math.Groups[2].Value.Replace("\"", "");
// reference = root và mailboxName =""
if (dir == root && mailboxName == "")
{
return("* LSUB (\\Noselect ) \"/\" \"\"\r\n" + tag + " OK LSUB completed");
}
// kiểm tra đường dẫn
// kiểm tra mailboxName bằng "*","%"
if (!Directory.Exists(dir + mailboxName) && mailboxName != "*" && mailboxName != "%")
{
return(tag + " OK LSUB completed");
}
int temp = 0;
if (mailboxName == "%")
{
temp = 1;
mailboxName = "*";
}
string[] dirList = Directory.GetDirectories(dir, mailboxName);
foreach (string mailboxDir in dirList)
{
// nếu mailboxName bằng "%" kiểm tra folder không có subfolder
if (temp == 1 && Directory.GetDirectories(mailboxDir).Length != 0)
{
continue;
}
string mailbox = mailboxDir.Replace(root, "");
List <MailBoxInfo> ListmailBoxInfo = SqliteQuery.LoadMailBoxInfo(userSession, mailbox);
if (ListmailBoxInfo.Count == 0)
{
return(tag + " OK LSUB completed");
}
MailBoxInfo mailBoxInfo = ListmailBoxInfo[0];
// kiểm tra mailbox đã được subcribe chưa
if (mailBoxInfo.subscribed == 0)
{
continue;
}
// tạo response
string[] tempArr =
{
(mailBoxInfo.all == 1?"\\All":""),
(mailBoxInfo.archive == 1?"\\Archive":""),
(mailBoxInfo.drafts == 1?"\\Drafts":""),
(mailBoxInfo.flagged == 1?"\\Flagged":""),
(mailBoxInfo.inbox == 1?"\\Inbox":""),
(mailBoxInfo.junk == 1?"\\Junk":""),
(mailBoxInfo.marked == 1?"\\Marked":"UnMarked"),
(mailBoxInfo.nointeriors == 1?"\\NoInferiors":""),
(mailBoxInfo.noselect == 1?"\\Noselect":""),
(mailBoxInfo.sent == 1?"\\Sent":""),
(mailBoxInfo.trash == 1?"\\Trash":"")
};
tempArr = tempArr.Where(x => !string.IsNullOrEmpty(x)).ToArray();
response += "* LSUB (" + string.Join(' ', tempArr) + $") \"/\" \"{reference}{mailbox}\"\r\n";
}
return(response + tag + " OK LSUB completed");
}
public static string ReturnExpungeResponse(string tag, string userSession, string userMailBox, bool fromUIDCommand = false, string argument = "")
{
List <MailInfo> mailInfoList = new List <MailInfo>();
if (argument != "")
{
var math = Regex.Match(argument, @"^((?:(?:(?:[1-9]+|\*):(?:[1-9]+|\*)|[1-9]+),)*(?:(?:[1-9]+|\*):(?:[1-9]+|\*)|[1-9]+))");
if (!math.Success)
{
return(ReturnParseErrorResponse(tag, "FETCH"));
}
List <MailInfo> tempMailInfoList;
string right = "";
string left = "";
string[] mailIndexArr = math.Groups[1].Value.Split(',');
foreach (string mailIndex in mailIndexArr)
{
if (mailIndex.Contains(':'))
{
string[] temp = mailIndex.Split(':', StringSplitOptions.RemoveEmptyEntries);
if (temp[0] == "*")
{
if (fromUIDCommand)
{
left = "uid";
}
else
{
left = "numrow";
}
}
else
{
left = temp[0];
}
if (temp[1] == "*")
{
if (fromUIDCommand)
{
right = "uid";
}
else
{
right = "numrow";
}
}
else
{
right = temp[1];
}
if (fromUIDCommand)
{
tempMailInfoList = SqliteQuery.LoadMailInfoWithUID(userSession, userMailBox, left, right);
}
else
{
tempMailInfoList = SqliteQuery.LoadMailInfoWithIndex(userSession, userMailBox, left, right);
}
}
else
{
if (fromUIDCommand)
{
tempMailInfoList = SqliteQuery.LoadMailInfoWithUID(userSession, userMailBox, mailIndex);
}
else
{
tempMailInfoList = SqliteQuery.LoadMailInfoWithIndex(userSession, userMailBox, mailIndex);
}
}
foreach (MailInfo tempMail in tempMailInfoList)
{
if (!mailInfoList.Contains(tempMail) && tempMail.deleted == 1)
{
mailInfoList.Add(tempMail);
}
}
}
mailInfoList.Sort((x, y) => x.uid.CompareTo(y.uid));
}
else
{
mailInfoList = SqliteQuery.LoadDeletedMail(userSession, userMailBox);
}
if (mailInfoList.Count == 0)
{
return(tag + " OK EXPUNGE completed");
}
List <string> TrashMailbox = SqliteQuery.LoadTrashMailBoxName(userSession);
string response = "";
int success;
string soursePath;
string desPath;
long baseUID;
string root = Environment.CurrentDirectory + $"/ImapMailBox/{userSession}";
if (TrashMailbox.IndexOf(userMailBox) == -1 && TrashMailbox.Count != 0)
{
foreach (string mailBox in TrashMailbox)
{
List <MailBoxInfo> mailBoxInfo = SqliteQuery.LoadMailBoxInfo(userSession, mailBox);
if (mailBoxInfo.Count == 0)
{
return("OK EXPUNGE completed");
}
baseUID = mailBoxInfo[0].uidnext;
foreach (MailInfo mail in mailInfoList)
{
soursePath = root + $"/{userMailBox}/email_{baseUID}";
if (File.Exists(soursePath + ".msg"))
{
soursePath += ".msg";
desPath = root + $"/{mailBox}/email_{baseUID}.msg";
}
else
{
if (File.Exists(soursePath + ".eml"))
{
soursePath += ".eml";
desPath = root + $"/{mailBox}/email_{baseUID}.eml";
}
else
{
return(tag + "OK EXPUNGE completed");
}
}
File.Copy(soursePath, desPath);
File.Delete(soursePath);
success = SqliteQuery.DeleteMailWithUID(userSession, userMailBox, mail.uid);
mail.uid = baseUID++;
mail.mailboxname = mailBox;
success = SqliteQuery.InsertMailIntoMailBox(userSession, mailBox, mail);
response += $"* {mail.numrow} EXPUNGE\r\n";
}
}
}
else
{
foreach (MailInfo mail in mailInfoList)
{
soursePath = root + $"/{userMailBox}/email_{mail.uid}";
if (File.Exists(soursePath + ".msg"))
{
soursePath += ".msg";
}
else
{
if (File.Exists(soursePath + ".eml"))
{
soursePath += ".eml";
}
else
{
return(tag + "OK EXPUNGE completed");
}
}
File.Delete(soursePath);
success = SqliteQuery.DeleteMailWithUID(userSession, userMailBox, mail.uid);
response += $"* {mail.numrow} EXPUNGE\r\n";
}
}
response += tag + " OK EXPUNGE completed";
return(response);
}
public static string ReturnAppendResponse(string tag, string argument, string userSession, AppendCall appendCall)
{
//var maths = Regex.Match(argument, "");
var math = Regex.Match(argument, "^(?:((?:\"[\\w\\s]+\"|\\w+) \\((?:\\\\\\w+)*\\) \"[^\"]*\" \\{\\d*\\})|((?:\"[\\w\\s]+\"|\\w+) \\((?:\\\\\\w+)*\\) \\{\\d*\\})|((?:\"[\\w\\s]+\"|\\w+) \\{\\d*\\}))");
if (!math.Success)
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
MailInfo mailAppend = new MailInfo();
Flags flags = new Flags();
string mailBoxName;
List <string> strFlag = new List <string>();
DateTime Date = DateTime.Now;
int messageSize = 0;
if (math.Groups[3].Success)
{
math = Regex.Match(math.Groups[3].Value, "(?:(\"[\\w\\s]+\"|\\w+) \\{(\\d*)\\})");
mailBoxName = math.Groups[1].Value.Replace("\"", "");
if (math.Groups[2].Value != "" && !Int32.TryParse(math.Groups[3].Value, out messageSize))
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
}
else
{
if (math.Groups[2].Success)
{
math = Regex.Match(math.Groups[2].Value, "(?:(\"[\\w\\s]+\"|\\w+) \\(((?:\\\\\\w+)*)\\) \\{(\\d*)\\})");
mailBoxName = math.Groups[1].Value.Replace("\"", "");
if (math.Groups[2].Value != "")
{
strFlag = math.Groups[2].Value.Split(' ').ToList();
}
if (math.Groups[3].Value != "" && !Int32.TryParse(math.Groups[3].Value, out messageSize))
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
}
else
{
math = Regex.Match(math.Groups[1].Value, "(?:(\"[\\w\\s]+\"|\\w+) \\(((?:\\\\\\w+)*)\\) \"([^\"]*)\" \\{(\\d*)\\})");
mailBoxName = math.Groups[1].Value.Replace("\"", "");
if (math.Groups[2].Value != "")
{
strFlag = math.Groups[2].Value.Split(' ').ToList();
}
if (math.Groups[3].Value != "")
{
try
{
Date = Convert.ToDateTime(math.Groups[3].Value);
}
catch
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
}
if (math.Groups[4].Value != "" && !Int32.TryParse(math.Groups[4].Value, out messageSize))
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
}
}
List <MailBoxInfo> mailBoxInfoList = SqliteQuery.LoadMailBoxInfo(userSession, mailBoxName);
if (mailBoxInfoList.Count == 0)
{
return(tag + " NO Mailbox does not exist");
}
if (!flags.BuildFlagItem(strFlag.ToArray()))
{
return(Response.ReturnParseErrorResponse(tag, "APPEND"));
}
mailAppend.user = userSession;
mailAppend.mailboxname = mailBoxName;
mailAppend.uid = mailBoxInfoList[0].uidnext;
mailAppend.recent = 1;
mailAppend.seen = (flags.seen == "1" ? 1 : 0);
mailAppend.answered = (flags.answered == "1" ? 1 : 0);
mailAppend.deleted = (flags.deleted == "1" ? 1 : 0);
mailAppend.draft = (flags.draft == "1" ? 1 : 0);
mailAppend.flagged = (flags.flagged == "1" ? 1 : 0);
mailAppend.intertime = ((DateTimeOffset)Date).ToUnixTimeSeconds();
appendCall.isCall = true;
appendCall.mailInfo = mailAppend;
appendCall.size = messageSize;
appendCall.tag = tag;
return("+ Ready for append literal");
}