// I3 server.
// This file written mostly by Tim Johnson (Tim@TimMUD)
// Started by Tim on May 7, 2003.
// http://cie.imaginary.com/protocols/intermud3.html#errors
#include <lib.h>
#include <commands.h>
#include <daemons.h>
#include <socket.h>
#define MAXMUDS 32 // Max number of muds allowed from one IP
#define ROUTER_BLACKLIST "/secure/daemon/i3router/blacklist.cfg" //bad IP's
#define DEB_IN 1 // //trr-Incoming
#define DEB_OUT 2 // //trr-Outgoing
#define DEB_OUT_LOG 0 // //logging stuff
#define DEB_INVALID 3 // //trr-Invalid
#define DEB_OTHER 0 // //trr-Other
#define DEBUGGER_GUY "cratylus" // Name of who to display //trrging info to.
#define MAXIMUM_RETRIES 20
// SEND_WHOLE_MUDLIST makes it act like the official I3 server instead of like the I3 specs
#define SEND_WHOLE_MUDLIST
// SEND_WHOLE_CHANLIST makes it act like the official I3 server instead of like the I3 specs
#define SEND_WHOLE_CHANLIST
inherit LIB_DAEMON;
object cmd = load_object(CMD_ROUTER);
object rsocket = find_object(RSOCKET_D);
object ssocket = find_object(SSOCKET_D);
static void validate(){
if( previous_object() != cmd && previous_object() != rsocket &&
previous_object() != this_object() && previous_object() != ssocket &&
!((int)master()->valid_apply(({ "ASSIST" }))) ){
trr("SECURITY ALERT: validation failure in ROUTER_D.","red");
error("Illegal attempt to access router daemon: "+get_stack()+
" "+identify(previous_object(-1)));
}
}
// Saved variables...
mapping listening;
// list of muds listening to each channel
// (key=chan name, value=mud array)
mapping connected_muds;
// muds that have successfully done a startup
// (key=mudname, value=fd)
string router_name; // Name of the router.
string router_ip;
static string *router_list = ({}); // Ordered list of routers to use.
mapping mudinfo = ([]); // Info about all the muds which the router knows about.
mapping channels; // Info about all the channels the router handles.
mapping channel_updates; // Tells when a channel was last changed.
int channel_update_counter; // Counter for the most recent change.
// Why is this not a part of the channels mapping?
// Because I need to remember that some channels got deleted.
mapping mudinfo_updates; // Like channel_updates except for muds.
int mudinfo_update_counter; // Similar to channel_update_counter
static int max_age = 604800;
//static int max_age = 86400;
mapping Blacklist = ([]);
// Prototypes
static mapping muds_on_this_fd(int fd);
static mapping muds_not_on_this_fd(int fd);
void write_data(int fd, mixed data);
static void close_connection(int fd);
static void broadcast_data(mapping targets, mixed data);
// Ones with their own files...
string clean_fd(string fd);
static void broadcast_chanlist(string channame);
void broadcast_mudlist(string mudname);
static varargs void Debug(string str, int level);
static void process_channel(int fd, mixed *info);
static void process_startup_req(int protocol, mixed info, int fd);
static void read_callback(int fd, mixed info);
static void remove_mud(string mudname, int forced);
static void send_chanlist_reply(string mudname, int old_chanid);
static void send_mudlist(string mudname);
static void send_mudlist_updates(string updating_mudname, int old_mudlist_id);
static void send_startup_reply(string mudname);
static void send_error(string mud, string user, string errcode, string errmsg, mixed *info);
void send_full_mudlist(string mud);
// core_stuff.h...
static void create();
static void setup();
void remove();
// funcs.h...
static mapping muds_on_this_fd(int fd);
int value_equals(string a,int b, int c);
static mapping muds_not_on_this_fd(int fd);
int value_not_equals(string a,int b, int c);
// socket_stuff.h
varargs string *SetList();
// Code for all the stuff in the prototypes...
#include "./server_log.h"
#include "./irn.h"
#include "./clean_fd.h"
#include "./broadcast_chanlist.h"
#include "./broadcast_mudlist.h"
#include "./debug.h"
#include "./process_channel.h"
#include "./process_startup_req.h"
#include "./read_callback.h"
#include "./remove_mud.h"
#include "./send_chanlist_reply.h"
#include "./send_mudlist_updates.h"
#include "./send_startup_reply.h"
#include "./send_error.h"
#include "./core_stuff.h"
#include "./funcs.h"
#include "./hosted_channels.h"
#include "./send_full_mudlist.h"
static void close_connection(int fd){
if(!socket_status(fd) || socket_status(fd)[0] == -1) return;
if(base_name(socket_status(fd)[5]) == RSOCKET_D){
RSOCKET_D->close_connection(fd);
}
if(base_name(socket_status(fd)[5]) == SSOCKET_D){
SSOCKET_D->close_connection(fd);
}
}
varargs void write_data(int fd, mixed data, int override){
mixed *sstat = socket_status(fd);
object rsock = find_object(RSOCKET_D);
string targetmud;
#if DEB_OUT_LOG
write_file("/secure/log/tmp.txt","Trying to send at "+ctime(time()));
write_file("/secure/log/tmp.txt"," packet size:"+sizeof(data));
write_file("/secure/log/tmp.txt"," "+identify(data)+"\n---\n\n");
#endif
if(data[0] == "irn-startup-req"){
int ok = 0;
string tmpsstat;
if(socket_status(fd)) tmpsstat = socket_status(fd)[4];
foreach(mixed element in ok_ips){
if(tmpsstat && !strsrch(tmpsstat,element+".")) ok = 1;
}
if(!ok){
trr("%^B_GREEN%^ATTENTION: IRN startup aborted for "+
tmpsstat,"red");
return;
}
trr("%^B_YELLOW%^ATTENTION: IRN startup about to be sent to fd"+fd+":%^RESET%^ "+ identify(data)+", "+identify(socket_status(fd)),"red");
}
targetmud = this_object()->query_connected_fds()[fd];
if(!sstat || sstat[1] != "DATA_XFER") return;
if(!fd || (!data[4] && targetmud) || member_array(fd, keys(irn_sockets)) != -1 ||
(targetmud && targetmud == data[4]) ){
if(rsock && sstat[5] == rsock) RSOCKET_D->write_data(fd, data);
else IMC2_SERVER_D->write_data(fd, data);
}
else {
}
}
static void broadcast_data(mapping targets, mixed data){
object ssock = find_object(SSOCKET_D);
RSOCKET_D->broadcast_data(targets, data);
if(ssock) IMC2_SERVER_D->broadcast_data(targets, data);
}
// debugging stuff...
mapping query_mudinfo(){ validate(); return copy(mudinfo); }
mapping query_mud(string str){ validate(); return copy(mudinfo[str]); }
mapping query_connected_muds(){ validate(); return copy(connected_muds); }
mapping query_chaninfo(){ return ([ "listening" : listening, "channels" : channels ]); }
mapping query_socks(){
object ssock = find_object(SSOCKET_D);
object rsock = find_object(RSOCKET_D);
mapping ret = ([]);
validate();
if(rsock) ret = RSOCKET_D->query_socks();
if(ssock) ret += SSOCKET_D->query_socks();
return ret;
}
mapping query_connected_fds(){
mapping RetMap = ([]);
validate();
foreach(mixed key, mixed val in connected_muds){
RetMap[val] = key;
}
return copy(RetMap);
}
int *open_socks(){
int *ret = ({});
validate();
foreach(mixed element in socket_names()){
if(intp(element[0]) && element[0] != -1 && !grepp(element[3],"*") &&
last_string_element(element[3],".") == router_port &&
member_array(element[0],
keys(this_object()->query_irn_sockets())) == -1) {
ret += ({ element[0] });
}
}
return ret;
}
int query_imc(mixed mud){
mixed *sstat;
object ssock = find_object(SSOCKET_D);
if(stringp(mud)) mud = query_connected_muds()[mud];
if(!intp(mud)) return 0;
sstat = socket_status(mud);
if(!ssock ||!sstat || sizeof(sstat) != 6 || sstat[0] == -1) return 0;
if(sstat[5] == ssock) return 1;
return 0;
}
mixed get_info(int auto) {
mixed *socky = sort_array(values(connected_muds), 1);
mixed *muddy = sort_array(keys(connected_muds), 1);
string socks = implode(socky, " ");
string muddies = implode(muddy, ", ");
int socknum = sizeof(socky);
string sret = "", ret = "";
validate();
if(find_object(SSOCKET_D)){
sret = "\nIMC2 server socket daemon uptime: "+
time_elapsed(time()-SSOCKET_D->GetInceptDate())+
", up since "+ctime(SSOCKET_D->GetInceptDate());
}
socks += "\nTotal number of connected muds: "+socknum+"\n";
ret = "router_name: "+router_name+
"\nrouter_ip: "+router_ip+
"\nrouter_port: "+router_port+
"\nrouter_list"+identify(router_list)+
"\nchannel_update_counter: "+ channel_update_counter+
((sizeof(channels)) ? "\nchannels:"+implode(sort_array(keys(channels),1),", ") : "")+
"\nmudinfo_update_counter: "+ mudinfo_update_counter+
"\nsockets: "+socks+
"\nmuds: "+muddies+
"\nRouter socket daemon uptime: "+
time_elapsed(time()-RSOCKET_D->GetInceptDate())+
", up since "+ctime(RSOCKET_D->GetInceptDate())+
sret+
"\n"+Report();
if(auto) return ret;
write(ret);
return 1;
}
void clear(){
string mudname;
validate();
server_log("%^RED%^Clearing all mud data!");
foreach(mudname in keys(mudinfo)) remove_mud(mudname,1);
save_object(SAVE_ROUTER);
}
string GetRouterName(){
validate();
return router_name;
}
string SetRouterName(string str){
validate();
if(first(str,1) != "*") str = "*"+str;
router_name = str;
server_log(" setting router name to: "+str);
SetList();
return router_name;
}
string GetRouterIP(){
validate();
return router_ip;
}
string SetRouterIP(string str){
validate();
router_ip = str;
server_log("Setting router IP to: "+str);
SetList();
return router_ip;
}
string GetRouterPort(){
validate();
return router_port;
}
string SetRouterPort(string str){
validate();
router_port = str;
server_log("Setting router port to: "+str);
SetList();
return router_port;
}
string *GetRouterList(){
validate();
return router_list;
}
varargs string *SetList(){
string tmp;
string tmp_port = router_port;
string tmp_ip = router_ip;
validate();
if(!strsrch(router_name,"*")) tmp = router_name;
else tmp = "*"+router_name;
if(lower_case(mud_name()) == "frontiers" ||
lower_case(mud_name()) == "*yatmim"){
tmp_port = "23";
tmp_ip = "149.152.218.102";
tmp = "*yatmim";
}
if(!sizeof(router_list)){
router_list = ({ ({ tmp, tmp_ip+" "+tmp_port }) });
}
server_log("Setting router list to: "+identify(router_list));
save_object(SAVE_ROUTER);
return router_list;
}
mapping GetConnectedMuds(){
validate();
return copy(connected_muds);
}
string *GetBannedMuds(){
validate();
return banned_muds;
}
string *AddBannedMud(string str){
validate();
banned_muds += ({ str });
server_log(str+" has been BANNED");
save_object(SAVE_ROUTER);
return banned_muds;
}
string *RemoveBannedMud(string str){
validate();
banned_muds -= ({ str });
server_log(str+" has been unbanned.");
save_object(SAVE_ROUTER);
return banned_muds;
}
string *GetBlacklistedMuds(){
validate();
return blacklisted_muds;
}
varargs string *AddBlacklistedMud(string str, int perma){
validate();
if(!Blacklist) Blacklist = ([]);
if(Blacklist[str]) return blacklisted_muds;
if(perma) perma = 0;
else perma = time();
Blacklist[str] = perma;
blacklisted_muds += ({ str });
server_log(str+" has been BLACKLISTED");
save_object(SAVE_ROUTER);
return blacklisted_muds;
}
string *RemoveBlacklistedMud(string str){
validate();
if(!Blacklist) Blacklist = ([]);
if(Blacklist[str]) map_delete(Blacklist, str);
blacklisted_muds -= ({ str });
server_log(str+" has been unblacklisted.");
save_object(SAVE_ROUTER);
return blacklisted_muds;
}
mixed GetRemoteIP(int fd){
mixed conn = socket_status(fd);
string ret;
if(!conn || !sizeof(conn)) return 0;
if(!conn[4] || conn[4] == "*.*") return 0;
conn = explode(conn[4],".");
ret = implode(conn[0..3],".");
return ret;
}
void check_blacklist(){
int timenow = time();
string *bms;
trr("Checking old blacklists");
if(!Blacklist) Blacklist = ([]);
blacklisted_muds = distinct_array(blacklisted_muds);
bms = keys(Blacklist);
foreach(string element in blacklisted_muds){
if(member_array(element, bms) == -1)
Blacklist[element] = 0;
}
foreach(string key, int val in Blacklist){
if((timenow - val) == timenow) continue;
if((timenow - val) > max_age){
RemoveBlacklistedMud(key);
trr("%^B_BLACK%^Removed "+key+" from blacklist.","white");
}
}
}
void check_graylist(){
//tc("Checking graylist");
if(sizeof(graylisted_muds)){
graylisted_muds = distinct_array(graylisted_muds);
tc("removing graylisted "+graylisted_muds[0]);
graylisted_muds -= ({ graylisted_muds[0] });
}
}
void check_discs(){
int *fds = values(connected_muds);
int i = 1;
foreach(string mudname in keys(mudinfo)){
if(!connected_muds[mudname] && mudinfo[mudname]["router"]){
if(mudinfo[mudname]["router"] != my_name &&
member_array(mudinfo[mudname]["router"],keys(irn_connections)) == -1){
if(!mudinfo[mudname]["disconnect_time"]){
trr("killing "+mudname);
mudinfo[mudname]["disconnect_time"] = 100;
if(mudinfo[mudname]["connect_time"])
mudinfo[mudname]["connect_time"] = 0;
schedule_broadcast(mudname);
}
}
}
}
if(sizeof(fds))
foreach(mixed element in sort_array(fds,1)){
string lost_mud;
if(!intp(element)) continue;
if(!socket_status(element) ||
socket_status(element)[1] == "CLOSED" || !GetRemoteIP(element) ||
GetRemoteIP(element) != mudinfo[query_connected_fds()[element]]["ip"]){
foreach(string key, mixed val in mudinfo){
if(!connected_muds[key] && mudinfo[key]["router"]){
if(mudinfo[key]["router"] == my_name){
server_log("Cleaning connection info from "+key);
if(!mudinfo[key]["disconnect_time"])
mudinfo[key]["disconnect_time"] = time();
if(mudinfo[key]["connect_time"])
mudinfo[key]["connect_time"] = 0;
}
else {
server_log("Cleaning connection info from "+key);
if(!mudinfo[key]["disconnect_time"])
mudinfo[key]["disconnect_time"] = 0;
if(mudinfo[key]["connect_time"])
mudinfo[key]["connect_time"] = 0;
}
}
}
foreach(string key, int val in connected_muds){
if(val == element){
trr("REMOVING DISCONNECTED: "+key+" from "+val);
i++;
call_out( (: disconnect_mud :), i, key);
}
}
}
}
}
void clean_ghosts(){
int tmp,i;
object rsockd = find_object(RSOCKET_D);
object ssockd = find_object(SSOCKET_D);
mixed array incoming = socket_status();
mixed *legit_socks = keys(this_object()->query_socks());
legit_socks += keys(this_object()->query_irn_sockets());
if(!rsockd && !ssockd) return;
tmp =sizeof(socket_status())-1;
for(i=0;i < tmp;i++){
if(!incoming[i][5] ||
(incoming[i][5] != rsockd && incoming[i][5] != ssockd)) continue;
if(member_array(i, legit_socks) == -1 && incoming[i][1] == "DATA_XFER"){
this_object()->close_connection(i);
}
}
}
void clean_chans(){
string *cleaned = ({});
foreach(mixed key, mixed val in listening){
if(arrayp(val)){
foreach(string listening_mud in val){
if(!mudinfo[listening_mud]){
listening[key] -= ({ listening_mud });
cleaned += ({ listening_mud });
}
}
}
else trr("huh? not an array?");
}
foreach(mixed key, mixed val in channels){
mixed *tmp_chan = ({});
if(sizeof(val) == 3){
tmp_chan = ({ val[0], val[1], distinct_array(val[2]) });
channels[key] = tmp_chan;
}
}
cleaned = distinct_array(cleaned);
save_object(SAVE_ROUTER);
trr("channel cleanup: cleaned from listening: "+implode(cleaned,"\n"));
}
void clear_discs(){
string mudname;
int i = 1;
validate();
trr("%^B_BLACK%^Discarding excessively old disconnects.","white");
trr("%^B_BLACK%^Max age is "+time_elapsed(max_age)+".","white");
foreach(mudname in keys(mudinfo)) {
int deadsince = time() - mudinfo[mudname]["disconnect_time"];
if(!connected_muds[mudname] && mudinfo[mudname]["router"]){
if(mudinfo[mudname]["router"] != my_name &&
member_array(mudinfo[mudname]["router"],keys(irn_connections)) == -1){
if(!mudinfo[mudname]["disconnect_time"])
mudinfo[mudname]["disconnect_time"] = 0;
if(mudinfo[mudname]["connect_time"])
mudinfo[mudname]["connect_time"] = 0;
}
}
if(!mudinfo[mudname]["disconnect_time"]) continue;
trr("%^B_BLACK%^"+mudname+": "+ctime((mudinfo[mudname]["disconnect_time"]) || time()),"white");
trr("%^B_BLACK%^dead age: "+time_elapsed(deadsince),"white");
if(mudinfo[mudname]["disconnect_time"] && deadsince > max_age ){
trr(mudname+": "+time_elapsed(deadsince),"red");
server_log("I want to remove "+mudname+". Its disconnect time is "+ctime(query_mud(mudname)["disconnect_time"]));
server_log("Which was "+time_elapsed(time() - query_mud(mudname)["disconnect_time"])+" ago.");
i = i+1;
remove_mud(mudname,1);
}
if(mudinfo[mudname] && mudinfo[mudname]["disconnect_time"] > 0 &&
mudinfo[mudname]["connect_time"] > 0){
i = 1;
server_log("I want to remove "+mudname+". It is in a paradox state.");
if(member_array(mudname,keys(query_connected_muds())) != -1){
trr("%^B_BLACK%^Its fd is: "+query_connected_muds()[mudname],"white");
}
else {
trr("%^B_BLACK%^It is not listed as a connected mud.","white");
}
server_log("Removing disconnected mud: "+identify(mudname));
i = i+2;
remove_mud(mudname,1);
}
}
}
int eventDestruct(){
validate();
save_object(SAVE_ROUTER);
server_log("I am being destructed by: \n"+get_stack()+
"\n"+identify(previous_object(-1)));
daemon::eventDestruct();
}
string query_fd_info(mixed foo){
int num, i;
string ret = ""; validate();
if(stringp(foo)) if(sscanf(foo,"%d",num) != 1) return "foo";
if(intp(foo)) num = foo;
for(i=0;i<num;i++){
mapping bar = query_connected_fds();
ret += i+" "+socket_address(i)+" "+(bar[i]+"" || "")+"\n";
}
return ret;
}
int GetMaxRetries(){ return MAXIMUM_RETRIES; }
varargs void ReceiveList(mixed data, string type, string who){
string *cmuds = keys(connected_muds);
//trr("ReceiveList("+identify(data)+", "+identify(type)+", "+identify(who)+")");
if(!type || !sizeof(type)) type = "mudlist";
if(!mapp(data)){
return;
}
if(type == "mudlist"){
foreach(mixed key, mixed val in data){
if(member_array(key,cmuds) != -1) continue;
if(val && val["router"] && val["router"] == router_name) continue;
if(mudinfo[key] && (!val || intp(val))){
trr("ROUTER_D: deleting "+key);
remove_mud(key,1);
continue;
}
if(!mapp(val)){
return;
}
mudinfo_update_counter++;
//if(mudinfo[key] && mudinfo[key]["router"] &&
// mudinfo[key]["router"] == router_name) continue;
if(!connected_muds[key]){
trr("%^B_GREEN%^%^BLACK%^accepting "+key+
" update from "+(mudinfo[key] ? mudinfo[key]["router"] : who ));
mudinfo_updates[key] = mudinfo_update_counter;
mudinfo[key]=val;
schedule_broadcast(key, 1);
}
else {
trr("%^RESET%^Looks like I'm %^B_RED%^%^BLACK%^REJECTING%^RESET%^ "+key+"."
+mudinfo[key]["router"]+" update from "+who);
}
}
}
else if(type == "chanlist"){
if(data["listening"] && sizeof(data["listening"]) && mapp(data["listening"])){
foreach(mixed key, mixed val in data["listening"]){
trr("listening update: "+key+" is "+identify(val)+" val is a "+typeof(val),"yellow");
}
}
if(data["channels"] && sizeof(data["channels"]) && mapp(data["channels"])){
foreach(mixed key, mixed val in data["channels"]){
string ownermud = data["channels"][key][1];
if(!key || !val || !stringp(key)){
map_delete(channels, key);
map_delete(listening, key);
continue;
}
if(member_array(ownermud, cmuds) != -1) continue;
if(val == -1) map_delete(channels, key);
if(val == -1) map_delete(listening, key);
else {
val[2] = distinct_array(val[2]);
channels[key] = val;
}
broadcast_chanlist(key);
trr("chan update: "+key+" is "+identify(val)+" val is a "+typeof(val),"green");
}
}
}
save_object(SAVE_ROUTER);
}
int purge_crud(){
foreach(mixed key, mixed val in mudinfo){
if(!mapp(val)) map_delete(mudinfo, key);
}
save_object(SAVE_ROUTER);
return sizeof(mudinfo);
}
varargs int purge_ip(string ip, int rude, mixed *sock_array){
validate();
if(!sock_array || !sizeof(sock_array)) sock_array = socket_names();
foreach(mixed element in sock_array){
int fd = element[0];
if(last_string_element(element[3],".") != router_port) continue;
if(member_array(fd, keys(irn_sockets)) != -1) continue;
if(ip == "*") continue;
if(clean_fd(socket_address(fd)) == ip){
if(query_connected_fds()[fd]){
if(rude){
server_log("router: fd to be rudely purged: "+fd+", "+query_connected_fds()[fd]);
disconnect_mud(query_connected_fds()[fd]);
}
}
}
}
return 1;
}
varargs int purge_ips(int rude){
mixed *sockies = socket_names();
foreach(mixed element in sockies){
string ip_address = element[3];
if(last_string_element(ip_address,".") == router_port ){
ip_address = replace_string(element[4],"."+last_string_element(element[4],"."),"");
purge_ip(ip_address,(rude || 0), sockies);
}
}
return 1;
}
void update_imc2(string mud, mapping foo){
//tc("update_imc2("+identify(mud)+", "+identify(foo)+")");
validate();
if(!mudinfo[mud]) return;
if(!mudinfo[mud]["other_data"]) mudinfo[mud]["other_data"] = ([]);
//tc("update_imc2("+identify(mud)+", "+identify(foo)+")","white");
foreach(mixed key, mixed val in foo){
mudinfo[mud]["other_data"][key] = val;
if(key == "port") mudinfo[mud]["player_port"] = val;
if(key == "versionid"){
mudinfo[mud]["base_mudlib"] = val;
mudinfo[mud]["mudlib"] = val;
mudinfo[mud]["mud_type"] = "n/a";
mudinfo[mud]["driver"] = "IMC2 client";
}
}
//tc(mud + " info: "+identify(mudinfo[mud]),"white");
this_object()->broadcast_mudlist(mud);
}
