mudlist_a.c

来自「C实现的MUD,对大家基本入门网络游戏很有帮助!」· C语言 代码 · 共 149 行

/*
 * File    : mudlist_a.c
 * Creator : Pinkfish@Discworld
 *         : Grendel@Tmi-2
 * When    : 93-08-15
 *
 * This file is part of the tmi mudlib.  Please keep this header intact.
 *
 * This protocol is used to send a mudlist in response to mudlist_q.
 */




// Ported to ES2 mudlib by Annihilator@ES2 (06/15/95)




#include <mudlib.h>
#include <net/dns.h>
#include <net/macros.h>




inherit F_CLEAN_UP;




int have_mudlist = 0;




void create() { seteuid(ROOT_UID); }




// Someone replyed to our query and has sent us their mudlist.
void incoming_request(mapping info)
{
    string *junk;




    if(!ACCESS_CHECK(previous_object())) return;




    // the keys to info are number identifying each mud
    junk = keys(info);
    if(sizeof(junk)) have_mudlist = 1;




    filter_array(junk, "process_list", this_object(), info);
}




int process_list(string idx, mapping info)
{
    string *inf, name, value;
    int j;
    mapping new_list, old;




    if(previous_object() != this_object()) return 0;




    // each entry consists of '|' separated fields
    inf = explode(info[idx], "|");




    // build up the mapping for the individual muds
    new_list = ([ ]);
    j = sizeof(inf);
    while (j--) if (sscanf(inf[j], "%s:%s", name, value) == 2)
        new_list[name] = value;
    if(!new_list["NAME"]) return 0;




    // make sure the name is in the proper form
    name = htonn( new_list["NAME"] );
    while( name[strlen(name)-1] == '.' )
        name = name[ 0..strlen(name)-2 ];
    new_list["ALIAS"] = nntoh(new_list["NAME"]);




    // already know about ourselves
    if (new_list["NAME"] == Mud_name()) return 0;




    // if we have an entry, we update it, otherwise we add the new_list entry
    old = DNS_MASTER->query_mud_info(name);




    // if it is a static mud we delete the entry
    if(!DNS_MASTER->dns_mudp(name)) old = 0;




    if (!old) DNS_MASTER->set_mud_info(name, new_list);
    else {
        inf = keys(new_list);
        j = sizeof(inf);
        while (j--) old[inf[j]] = new_list[inf[j]];
        DNS_MASTER->set_mud_info(name, old);
    }
    return 0;
}




// these is used by the dns master to find out if we have a mudlist
int clear_db_flag()
{
    if(ACCESS_CHECK(previous_object()))
        have_mudlist = 0;
}




int query_db_flag() { return have_mudlist; }