psyced/world/net/irc/decode.c
2009-01-26 21:12:53 +01:00

177 lines
5.1 KiB
C

// $Id: decode.c,v 1.30 2008/07/28 20:30:48 lynx Exp $ // vim:syntax=lpc
//
// generic CTCP implementation, also includes color code filter.
// msa (Markku Savela, if i remember the spelling right) came up
// with the crazy idea of using binary code 1 as the escape code
// for CTCP, so we put that code into the variable msa.
//
#include "irc.h"
#include <net.h>
volatile string msa, msare, cc, bc, uc;
// belongs into create() really..
decodeInit() {
msa = " "; msa[0] = 0x01;
msare = msa+".*"+msa;
cc = " "; cc[0] = 0x03; // same as msa
bc = " ", bc[0] = 0x02; // same as msa
uc = " ", uc[0] = 0x1F; // same as msa
}
// to be inherited
ctcp(type, text, target, req, srcnick, source) {
mapping vars;
P2(("%O %s %O -> %O: %O %O\n", ME,
req ? "REQ" : "REP",
srcnick, target, type, text))
vars = ([ "_nick" : srcnick,
"_value" : text || "",
"_type" : type ]);
sendmsg(target, (req? "_request": "_status") +"_legacy_CTCP",
"[_nick] "+ (req? "requests": "sends")+
" IRC legacy command '[_type]'.",
vars, source );
}
// to be inherited
version(text, target, req, srcnick, source) {
if (req && !text) {
P2(("%O VREQ(1=%O) %O -> %O: %O\n", ME, req,
srcnick, target, text))
sendmsg(target, "_request_version",
"[_nick] requests your version.",
([ "_nick" : srcnick ]), source );
#ifndef _flag_disable_request_version_IRC
} else if (target == query_server_unl()) {
if (text) vSet("agent", text);
#endif
} else {
PT(("%O VREP(0=%O) %O -> %O: %O\n", ME, req,
srcnick, target, text))
// generally unused as we don't send ctcp version to our clients
sendmsg(target, "_status_version_agent",
"Version: [_nick] is using \"[_version_agent]\" ([_version]).", ([
"_nick" : srcnick,
"_version" : SERVER_VERSION,
"_version_server": SERVER_DESCRIPTION,
"_version_agent" : text
]), source );
}
return;
}
// text, recipient string from irc, req: PRIVMSG/_request:1, NOTICE/_status:0
decode(text, rcpt, req) {
// filtering first.. 'cause some crazy people may be putting
// color codes inside of ctcp requests etc.
// filtering for mirc color codes
// these will never make it into a psyc standard ;)
// so they need to be removed
unless (strstr(text, cc) == -1) {
text = regreplace(text, cc + "[0-9][0-9],[0-9][0-9]", "", 1);
text = regreplace(text, cc + "[0-9][0-9],[0-9]", "", 1);
text = regreplace(text, cc + "[0-9],[0-9][0-9]", "", 1);
text = regreplace(text, cc + "[0-9],[0-9]", "", 1);
text = regreplace(text, cc + ",[0-9][0-9]", "", 1);
text = regreplace(text, cc + ",[0-9]", "", 1);
text = regreplace(text, cc + "[0-9][0-9]", "", 1);
text = regreplace(text, cc + "[0-9]", "", 1);
text = regreplace(text, cc, "", 1);
}
// filtering for irc bold code
unless (strstr(text, bc) == -1)
text = regreplace(text, bc, "", 1);
// filtering for irc underline code
unless (strstr(text, uc) == -1)
text = regreplace(text, uc, "", 1);
// it is more correct to check the whole text string for msa,
// but in practice no irc entity ever produces such a string
// with CTCP interspersed into the plain text, so were much
// more efficient to just look at the first character
if (text[0] == 0x01) {
string ctcpcode, ctcptext;
array(string) extract;
extract = regexplode(text, msare);
unless (sizeof(extract) >= 2) return; // unbalanced msa
ctcpcode = extract[1][1..<2];
sscanf(ctcpcode, "%s %s", ctcpcode, ctcptext);
ctcpcode = upper_case(ctcpcode);
P2(("CTCP %O w/ value %O found.\n", ctcpcode, ctcptext))
switch (ctcpcode) {
case "ACTION":
action(ctcptext, rcpt);
break;
case "VERSION":
unless (rcpt) break;
version(ctcptext, rcpt, req);
break;
case "PING":
if (rcpt)
if (req)
ping(rcpt, ctcptext);
// else ignore it for now as we cant tag it
break;
case "XCHAT":
// xchat sends an additional non-standard reply
// to the ctcp version request. we need to ignore
// this, instead of routing it to the server root.
break;
// this is an EXPERIMENTAL extension from fippo, but
// since this code can only be triggered by the
// appropriate irssi script, we can just leave it here
case "TYPING":
PT(("ctcp typing %O\n", ctcptext))
unless(rcpt) break;
switch(ctcptext) {
case "INACTIVE":
case "PAUSE":
case "COMPOSE":
case "ACTIVE":
case "GONE":
tell(rcpt, "", 0, 0, "_notice_typing_" + lower_case(ctcptext));
break;
default:
ctcp(ctcpcode, ctcptext, rcpt, req);
}
break;
default:
unless (rcpt) break;
ctcp(ctcpcode, ctcptext, rcpt, req);
}
return 0;
}
return text;
}
// ein klein wenig ratlosigkeit
#if 1
irctext(template, vars, data, source) {
int i;
string output = psyctext(template, vars, data, source);
for (i=strstr(output, "%"); i>=0; i=strstr(output, "%", i)) {
output[i] = 0x01; // support for msa's CTCP char
}
return output;
}
#else
ircp(output) {
int i;
for (i=strstr(output, "%"); i>=0; i=strstr(output, "%", i)) {
output[i] = 0x01; // support for msa's CTCP char
}
return emit(output);
}
#endif