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psyced/world/net/nntp/common.c

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#include <net.h>
#include <services.h>
inherit NET_PATH "connect";
inherit NET_PATH "queue2";
/*
* this connects to a nntp server as client and does some fancy things.
* the ultimate goal is to peer a nntp server and get notifications
* or even the whole articles fed into PSYC
*/
#define NEWSSERVER "news.btx.dtag.de"
#define NEWSGROUP "de.comm.chatsystems"
int busy;
request(cmd, cb) {
if (busy)
return enqueue(ME, ({ cmd, cb }));
// should be an input_to to idle()
remove_input_to(ME);
binary_message(cmd + "\n");
next_input_to(cb);
}
// call this whenever you're idle
do_request() {
mixed *a;
a = shift(ME);
request(a...);
}
idle(a) {
int numeric;
PT(("server said %O\n", a))
sscanf(a, "%d %s\n", numeric, a);
switch(numeric) {
case 200:
// HACK
// fetchXHeader("Subject", 0, 0, "<dj4ve0$t40$1@online.de>");
// HACK 2
// fetchGroup(NEWSGROUP);
// this is what should be really done
busy = 0;
do_request();
default:
next_input_to(#'idle);
}
}
string *buffer;
doBuffer(a, whendone) {
PT(("dobuffer %O\n", a))
if (a == ".") {
apply(whendone, buffer, 0); // dont flatten
buffer = ({ });
next_input_to(#'idle);
return;
}
buffer += ({ a });
input_to(#'doBuffer, INPUT_IGNORE_BANG, whendone);
}
// NNTP library below
_gotGroup(a) {
int numeric;
sscanf(a, "%d%t%s", numeric, a);
switch(numeric) {
case 211:
{
int num, low, high;
if (sscanf(a, "%d %d %d %s", num, low, high, a) == 4) {
gotGroup(a, num, low, high);
} else {
P0(("%O broken 211 command?\n"))
}
}
break;
default:
PT(("_gotGroup status code %d - %O\n", numeric, a))
break;
}
// 211 -> ok
// 411 -> No such group %s
}
gotGroup(group, num, low, high) {
PT(("got group %O with %d articles from %d to %d\n", group, num, low, high))
// HACK 3
fetchXHeader("Subject", high - 5, high);
}
fetchGroup(group) {
request(sprintf("GROUP %s", group), #'_gotGroup);
}
_gotXHdr2(buffer) {
PT(("_gotXHdr2 %O\n", buffer))
}
_gotXHdr(a) {
int numeric;
PT(("_gotXHdr(%O)\n", a))
sscanf(a, "%d %s", numeric, a);
switch(numeric) {
case 430: // no such article
case 221:
buffer = ({ });
input_to(#'doBuffer, INPUT_IGNORE_BANG, #'_gotXHdr2);
break;
}
}
fetchXHeader(what, low, high, id) {
string q;
q = "XHDR " + what + " ";
if (id)
q += id;
else if (low == 0 && high == 0)
; // NOOP
else if (high == 0)
q += low + "-";
else if (low == 0)
q += "-" + high;
else
q += low + "-" + high;
request(q, #'_gotXHdr);
}
logon(result) {
int ret;
ret = ::logon(result);
busy = 1;
next_input_to(#'idle);
fetchGroup(NEWSGROUP);
return ret;
}
create() {
qCreate();
qInit(ME, 30);
connect(NEWSSERVER, NNTP_SERVICE);
return 1;
}