/*
* The SEARCH command searches the mailbox for messages that match
* the given searching criteria. Searching criteria consist of one
* or more search keys. The untagged SEARCH response from the server
* contains a listing of message sequence numbers corresponding to
* those messages that match the searching criteria.
*/
public static void Search(string[] command, Connection connectionState)
{
if (connectionState.SelectedState && command.Length > SEARCH_MINSPLIT)
{
var messages = IMAP_Search.Search(command.Skip(2).ToArray(), connectionState);
if (messages.First() != -1)
{
string response = "";
foreach (var message in messages)
{
response += $"{message} ";
}
connectionState.SendToStream($"* SEARCH {response}");
connectionState.SendToStream($"{command[0]} OK SEARCH completed");
}
else
{
connectionState.SendToStream($"{command[0]} NO - search error: can’t search that [CHARSET] or criteria");
}
}
else
{
connectionState.SendToStream($"{command[0]} BAD - no search criteria specified");
}
}
/*
* The UID command has two forms. In the first form, it takes as its
* arguments a COPY, FETCH, or STORE command with arguments
* appropriate for the associated command. However, the numbers in
* the sequence set argument are unique identifiers instead of
* message sequence numbers. Sequence set ranges are permitted, but
* there is no guarantee that unique identifiers will be contiguous...
*
* In the second form, the UID command takes a SEARCH command with
* SEARCH command arguments. The interpretation of the arguments is
* the same as with SEARCH; however, the numbers returned in a SEARCH
* response for a UID SEARCH command are unique identifiers instead of message sequence numbers.
*/
public static void UID(string command, Connection connectionState)
{
var tag = command.Split(' ').First();
if (connectionState.SelectedState)
{
if (command.ToLower().Contains("fetch"))
{
if (IMAP_Fetch.TryFetch(command, connectionState, true))
{
connectionState.SendToStream($"{tag} OK UID FETCH completed");
}
}
else if (command.ToLower().Contains("search"))
{
var commandParams = IMAP_Fetch.ParseFetchCommand(command);
var messagesNums = IMAP_Search.Search(commandParams.Skip(1).ToArray(), connectionState);
if (messagesNums.First() != -1)
{
string response = "";
foreach (var messageNum in messagesNums)
{
foreach (var message in connectionState.SelectedMailBox.EmailMessages)
{
if (message.MsgNum == messageNum)
{
response += $"{message.MessageId} ";
break;
}
}
}
connectionState.SendToStream($"* SEARCH {response}");
connectionState.SendToStream($"{command[0]} OK UID completed");
}
else
{
connectionState.SendToStream($"{command[0]} BAD - this command is not supported");
}
}
}
else
{
connectionState.SendToStream($"{tag} BAD - command unknown or arguments invalid");
}
}
