Info-Mac 3/Info_Mac_1994-01.iso/Development/Source/IRC client Source/ircle sources/IRCNComm.p

Text File | 1993-07-19 | 8.5 KB | 339 lines | [TEXT/PJMM]

{    ircle - Internet Relay Chat client    }
{    File: IRCNComm    }
{    Copyright © 1992 Olaf Titz ([e-mail])    }

{    This program is free software; you can redistribute it and/or modify    }
{    it under the terms of the GNU General Public License as published by    }
{    the Free Software Foundation; either version 2 of the License, or    }
{    (at your option) any later version.    }

{    This program is distributed in the hope that it will be useful,    }
{    but WITHOUT ANY WARRANTY; without even the implied warranty of    }
{    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    }
{    GNU General Public License for more details.    }

{    You should have received a copy of the GNU General Public License    }
{    along with this program; if not, write to the Free Software    }
{    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.    }

unit IRCNComm;
{ Handles numeric server messages. }

interface
uses
    TCPTypes, TCPStuff, TCPConnections, ApplBase, MsgWindows, {}
    IRCGlobals, IRCAux, IRCChannels, IRCNotify, IRCCommands;

function NumericComm (comm: integer; var from, target, rest: string): boolean;
{ Handles numeric message comm with arguments from, target, rest }

implementation

function NumericComm (comm: integer; var from, target, rest: string): boolean;
    var
        s: string;
        s1, s2, s3, s4: string[80];
        l: longint;
        i: integer;
        c: char;
    begin
        NumericComm := true;
{ Numerics and their meanings taken originally from IRCII 2.1.something. }
{ Adapted to RFC 1459 with many additions… }
{ Where there are different formats for 2.6/2.7, this will work with 2.7 as tested. }
{ Some 2.8 messages found by experimentation }
{ Here messages are sorted by type }
        case comm of

{ generic line }
            251, 255, { new LUSERS reply }
            305, 306, { AWAY confirmation }
            342, { SUMMON confirmation }
            364, { new LINKS reply }
            371, { new INFO reply }
            372, 375, { new MOTD }
            391, { TIME reply }
            395: { nobody logged in }
                if not flushing then
                    LineMsg(rest);

{ generic line with from field }
            200..209, 261, 212..218, 241..244, { TRACE/STATS info }
            302, { new USERHOST reply }
            382: { Rehash }
                if not flushing then begin
                    s := concat(from, ': ', rest);
                    LineMsg(s)
                end;

{ generic error or important message }
            1, 3, { 2.8 intro }
            256..259, { new ADMIN reply }
            381, { Operator status }
            401..414, { no such nick/server/channel; cannot send }
            421, { unknown command }
            431, 432, 436, { bogus nick }
            442, { not on channel }
{ 461 need passwd for OPER? }
            461, { need more parameters }
            462, { registration problems }
            467, { Channel key set }
            481..483: { no privileges }
                begin
                if rest[1] = ':' then
                    delete(rest, 1, 1);
                s := concat('*** ', rest);
                LineMsg(s);
            end;

{ generic error with from field }
            422..424, { Server config error }
            444..446, { SUMMON/USERS failed }
            465, { Banned }
            471..475, { Cannot join/ set mode }
            491, { No O-line }
            501, 502, { Bad usermode }
            331: { Topic bogosity }
                begin
                s := concat('*** (', from, ') ', rest);
                LineMsg(s)
            end;

{ Status information }
            4: { 2.8 server telling its name, version etc }
                begin
                NextArg(rest, s1);
                CurrentServer := s1;
                NextArg(rest, s1);
                if copy(s1, 1, 3) = '2.8' then
                    serverVersion := SV_28
                else begin
                    s := concat('*** Server version is unknown to client: ', s1);
                    Message(s)
                end;
                NextArg(rest, s1);
                UpdateStatusLine;
                s := concat('Mode flags for users are: ', s1, '; for channels are: ', rest);
                Message(s)
            end;
            301:  { user is away }
                begin
                NextArg(rest, s1);
                s := concat(s1, ' is away (', rest, ')');
                Message(s)
            end;
            324: { Mode }
                begin
                NextArg(rest, s1);
                if length(rest) > 1 then
                    if (length(rest) > 2) or (rest[2] <> ' ') then begin
                        s := concat('Mode is ', rest);
                        ChannelMsg(s1, s);
                    end
            end;
            332: { Topic }
                begin
                s := concat('Topic is: ', rest);
                Message(s)
            end;
            221: { user mode }
                begin
                s := concat('User mode is: ', rest);
                Message(s)
            end;


{ Verbose command replies }
            211: { STATS L reply }
                begin
                NextArg(rest, s1);
                s := concat('**', s1, '**');
                LineMsg(s);
                s := '';
                for i := 1 to 5 do begin
                    NextArg(rest, s1);
                    s := stringof(s, s1 : 12);
                end;
                s := concat(s, ' ', rest);
                LineMsg(s)
            end;
            252..254: { new LUSERS numbers }
                begin
                NextArg(rest, s1);
                s := concat('There are ', s1, ' ', rest);
                LineMsg(s);
            end;
            303: { ISON reply }
                IsonReply(rest);
            352:  { new WHO reply }
                if not flushing then begin
                    NextArg(rest, s1);
                    if s1 <> 'Channel' then begin
                        NextArg(rest, s2);
                        NextArg(rest, s3);
                        s2 := concat(s2, '@', s3);
                        NextArg(rest, s3);
                        NextArg(rest, s3);
                        NextArg(rest, s4);
                        s := StringOf(s1 : 10, ' ', s3 : 9, s4 : 4, '  ', s2, ' (', rest, ')');
                        ChannelMsg(s1, s)
                    end;
                end;
            353: { new NAMES reply }
                if not flushing then begin
                    s := copy(rest, 3, 255);
                    i := pos(' ', s);
                    s1 := copy(s, 1, i - 1);
                    ChannelMsg(s1, s)
                end;
            311: { whois name info }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                NextArg(rest, s3);
                s := concat(s1, ' is ', s2, '@', s3, ' (', copy(rest, 4, 255), ')');
                Message(s)
            end;
            314: { whowas name info }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                NextArg(rest, s3);
                s := concat(s1, ' was ', s2, '@', s3, ' (', copy(rest, 4, 255), ')');
                Message(s)
            end;
            313: { whois operator }
                begin
                NextArg(rest, s1);
                s := concat(s1, ' ', rest);
                Message(s)
            end;
            319: { whois channels }
                begin
                NextArg(rest, s1);
                s := concat(s1, ' is on channels ', rest);
                Message(s)
            end;
            312: { whois host/server }
                begin
                NextArg(rest, s1);
                s := concat('On IRC via server ', rest);
                Message(s)
            end;
            317: { whois idle }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                s := concat('idle for ', s2, ' seconds');
                Message(s)
            end;
            321: { LIST header }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                s := StringOf(copy(s1, 1, 12) : 12, s2 : 4, '  ', copy(rest, 1, 60));
                LineMsg(s);
            end;
            322: { LIST entry }
                if not flushing then begin
                    NextArg(rest, s1);
                    c := s1[1];
                    if (listpriv and listglob and (c = '*')) or (listpub and ((listloc and (c = '&')) or (listglob and (c = '#')))) then begin
                        NextArg(rest, s2);
                        stringtonum(s2, l);
                        if (l >= listmin) and (l <= listmax) then begin
                            if listtop or (rest[0] <> chr(0)) then begin
                                s := StringOf(copy(s1, 1, 12) : 12, s2 : 4, '  ', copy(rest, 1, 60));
                                LineMsg(s);
                                lastWindow := nil; { save from net.terrorists with awfully long topics }
                            end
                        end
                    end
                end;
            341:  { invite confirmation }
                begin
                NextArg(rest, s1);
                s := concat('Inviting ', s1, ' to channel ', rest);
                lastInvite := rest;
                ChannelMsg(rest, s)
            end;
            351: { Server version }
                begin
                NextArg(rest, s1);
                s := concat('Server ', from, ' runs version ', s1);
                Message(s)
            end;
            367: { Ban list }
                begin
                NextArg(rest, s1);
                s := concat(rest, ' is banned on ', s1);
                ChannelMsg(s1, s)
            end;
            392, 393: { USERS reply }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                s := StringOf(copy(s1, 1, 8) : 9, copy(s2, 1, 10) : 12, ' ', rest);
                LineMsg(s);
            end;

{ End of list }
            219, 323, 315, 318, 365, 366, 368, 369, 374, 376, 394: { End of list }
                begin
                flushing := false;
                Message(rest);
                UpdateStatusLine
            end;

{ Various errors }
            433: { Nick in use }
                begin
                NextArg(rest, s1);
                s := concat('*** Nickname ', s1, ' is in use. You have to choose another.');
                LineMsg(s);
            end;
            441: { Not in channel }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                s := concat('*** ', s1, ' is not on channel ', s2);
                Message(s);
            end;
            443: { unnecessary invitation }
                begin
                NextArg(rest, s1);
                NextArg(rest, s2);
                s := concat('*** ', s1, ' is already on channel ', s2);
                ChannelMsg(s2, s);
            end;
            463, 466: { server refuses connection }
                begin
                s := concat('*** ', from, ' refuses connection: ', rest);
                LineMsg(s)
            end;

{ messages that generate a response }
            451: { not registered }
                begin
                s := concat('*** Registration failed, trying again...');
                LineMsg(s);
                RegUser
            end;
            464: { Need password - to be changed }
                begin
                s := concat('*** ', rest);
                LineMsg(s)
            end;

{ ignored messages }
            2, { duplicated intro }
            300: { dummy }
                begin
            end;

            otherwise
                NumericComm := false
        end;
    end;

end.