solanum/ircd/class.c

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/*
* ircd-ratbox: A slightly useful ircd.
* class.c: Controls connection classes.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "stdinc.h"
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#include "defaults.h"
#include "class.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "send.h"
#include "match.h"
#define BAD_PING -2
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rb_dlink_list class_list;
struct Class *default_class;
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struct Class *
make_class(void)
{
struct Class *tmp;
tmp = rb_malloc(sizeof(struct Class));
ConFreq(tmp) = DEFAULT_CONNECTFREQUENCY;
PingFreq(tmp) = DEFAULT_PINGFREQUENCY;
MaxUsers(tmp) = 1;
MaxSendq(tmp) = DEFAULT_SENDQ;
tmp->ip_limits = rb_new_patricia(PATRICIA_BITS);
return tmp;
}
void
free_class(struct Class *tmp)
{
if(tmp->ip_limits)
rb_destroy_patricia(tmp->ip_limits, NULL);
rb_free(tmp->class_name);
rb_free(tmp);
}
/*
* get_conf_ping
*
* inputs - pointer to struct ConfItem
* output - ping frequency
* side effects - NONE
*/
static int
get_conf_ping(struct ConfItem *aconf)
{
if((aconf) && ClassPtr(aconf))
return (ConfPingFreq(aconf));
return (BAD_PING);
}
/*
* get_client_class
*
* inputs - pointer to client struct
* output - pointer to name of class
* side effects - NONE
*/
const char *
get_client_class(struct Client *target_p)
{
const char *retc = "unknown";
if(target_p == NULL || IsMe(target_p))
return retc;
if(IsServer(target_p))
{
struct server_conf *server_p = target_p->localClient->att_sconf;
return server_p->class_name;
}
else
{
struct ConfItem *aconf;
aconf = target_p->localClient->att_conf;
if((aconf == NULL) || (aconf->className == NULL))
retc = "default";
else
retc = aconf->className;
}
return (retc);
}
/*
* get_client_ping
*
* inputs - pointer to client struct
* output - ping frequency
* side effects - NONE
*/
int
get_client_ping(struct Client *target_p)
{
int ping = 0;
if(IsServer(target_p))
{
struct server_conf *server_p = target_p->localClient->att_sconf;
ping = PingFreq(server_p->class);
}
else
{
struct ConfItem *aconf;
aconf = target_p->localClient->att_conf;
if(aconf != NULL)
ping = get_conf_ping(aconf);
else
ping = DEFAULT_PINGFREQUENCY;
}
if(ping <= 0)
ping = DEFAULT_PINGFREQUENCY;
return ping;
}
/*
* get_con_freq
*
* inputs - pointer to class struct
* output - connection frequency
* side effects - NONE
*/
int
get_con_freq(struct Class *clptr)
{
if(clptr)
return (ConFreq(clptr));
return (DEFAULT_CONNECTFREQUENCY);
}
/* add_class()
*
* input - class to add
* output -
* side effects - class is added to class_list if new, else old class
* is updated with new values.
*/
void
add_class(struct Class *classptr)
{
struct Class *tmpptr;
tmpptr = find_class(classptr->class_name);
if(tmpptr == default_class)
{
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rb_dlinkAddAlloc(classptr, &class_list);
CurrUsers(classptr) = 0;
}
else
{
MaxUsers(tmpptr) = MaxUsers(classptr);
MaxLocal(tmpptr) = MaxLocal(classptr);
MaxGlobal(tmpptr) = MaxGlobal(classptr);
MaxIdent(tmpptr) = MaxIdent(classptr);
PingFreq(tmpptr) = PingFreq(classptr);
MaxSendq(tmpptr) = MaxSendq(classptr);
ConFreq(tmpptr) = ConFreq(classptr);
CidrIpv4Bitlen(tmpptr) = CidrIpv4Bitlen(classptr);
CidrIpv6Bitlen(tmpptr) = CidrIpv6Bitlen(classptr);
CidrAmount(tmpptr) = CidrAmount(classptr);
free_class(classptr);
}
}
/*
* find_class
*
* inputs - string name of class
* output - corresponding class pointer
* side effects - NONE
*/
struct Class *
find_class(const char *classname)
{
struct Class *cltmp;
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rb_dlink_node *ptr;
if(classname == NULL)
return default_class;
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RB_DLINK_FOREACH(ptr, class_list.head)
{
cltmp = ptr->data;
if(!strcmp(ClassName(cltmp), classname))
return cltmp;
}
return default_class;
}
/*
* check_class
*
* inputs - NONE
* output - NONE
* side effects -
*/
void
check_class()
{
struct Class *cltmp;
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rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, class_list.head)
{
cltmp = ptr->data;
if(MaxUsers(cltmp) < 0)
{
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rb_dlinkDestroy(ptr, &class_list);
if(CurrUsers(cltmp) <= 0)
free_class(cltmp);
}
}
}
/*
* initclass
*
* inputs - NONE
* output - NONE
* side effects -
*/
void
initclass()
{
default_class = make_class();
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ClassName(default_class) = rb_strdup("default");
}
/*
* report_classes
*
* inputs - pointer to client to report to
* output - NONE
* side effects - class report is done to this client
*/
void
report_classes(struct Client *source_p)
{
struct Class *cltmp;
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rb_dlink_node *ptr;
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RB_DLINK_FOREACH(ptr, class_list.head)
{
cltmp = ptr->data;
sendto_one_numeric(source_p, RPL_STATSYLINE,
form_str(RPL_STATSYLINE),
ClassName(cltmp), PingFreq(cltmp),
ConFreq(cltmp), MaxUsers(cltmp),
MaxSendq(cltmp),
MaxLocal(cltmp), MaxIdent(cltmp),
MaxGlobal(cltmp), MaxIdent(cltmp),
CurrUsers(cltmp));
}
/* also output the default class */
sendto_one_numeric(source_p, RPL_STATSYLINE, form_str(RPL_STATSYLINE),
ClassName(default_class), PingFreq(default_class),
ConFreq(default_class), MaxUsers(default_class),
MaxSendq(default_class),
MaxLocal(default_class), MaxIdent(default_class),
MaxGlobal(default_class), MaxIdent(default_class),
CurrUsers(default_class));
}
/*
* get_sendq
*
* inputs - pointer to client
* output - sendq for this client as found from its class
* side effects - NONE
*/
long
get_sendq(struct Client *client_p)
{
if(client_p == NULL || IsMe(client_p))
return DEFAULT_SENDQ;
if(IsServer(client_p))
{
struct server_conf *server_p;
server_p = client_p->localClient->att_sconf;
return MaxSendq(server_p->class);
}
else
{
struct ConfItem *aconf = client_p->localClient->att_conf;
if(aconf != NULL && aconf->status & CONF_CLIENT)
return ConfMaxSendq(aconf);
}
return DEFAULT_SENDQ;
}