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/*
* ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
* s_newconf.c - code for dealing with conf stuff
*
* Copyright (C) 2004 Lee Hardy <lee@leeh.co.uk>
* Copyright (C) 2004-2005 ircd-ratbox development team
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1.Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2.Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3.The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: s_newconf.c 26094 2008-09-19 15:33:46Z androsyn $
*/
#include "stdinc.h"
#include "struct.h"
#include "dns.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "client.h"
#include "s_serv.h"
#include "send.h"
#include "hostmask.h"
#include "newconf.h"
#include "hash.h"
#include "ratbox_lib.h"
#include "match.h"
#include "ircd.h"
#include "class.h"
#include "s_gline.h"
#include "s_log.h"
rb_dlink_list shared_conf_list;
rb_dlink_list cluster_conf_list;
rb_dlink_list oper_conf_list;
rb_dlink_list hubleaf_conf_list;
rb_dlink_list server_conf_list;
rb_dlink_list xline_conf_list;
rb_dlink_list resv_conf_list; /* nicks only! */
rb_dlink_list pending_glines;
rb_dlink_list glines;
static rb_dlink_list nd_list; /* nick delay */
rb_dlink_list tgchange_list;
rb_patricia_tree_t *tgchange_tree;
static rb_bh *nd_heap = NULL;
static void expire_temp_rxlines(void *unused);
static void expire_nd_entries(void *unused);
static void expire_glines(void *unused);
void
init_s_newconf(void)
{
tgchange_tree = rb_new_patricia(PATRICIA_BITS);
nd_heap = rb_bh_create(sizeof(struct nd_entry), ND_HEAP_SIZE, "nd_heap");
rb_event_addish("expire_nd_entries", expire_nd_entries, NULL, 30);
rb_event_addish("expire_temp_rxlines", expire_temp_rxlines, NULL, 60);
rb_event_addish("expire_glines", expire_glines, NULL, CLEANUP_GLINES_TIME);
}
void
clear_s_newconf(void)
{
struct server_conf *server_p;
rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, shared_conf_list.head)
{
/* ptr here is ptr->data->node */
rb_dlinkDelete(ptr, &shared_conf_list);
free_remote_conf(ptr->data);
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, cluster_conf_list.head)
{
rb_dlinkDelete(ptr, &cluster_conf_list);
free_remote_conf(ptr->data);
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, hubleaf_conf_list.head)
{
rb_dlinkDelete(ptr, &hubleaf_conf_list);
free_remote_conf(ptr->data);
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, oper_conf_list.head)
{
free_oper_conf(ptr->data);
rb_dlinkDestroy(ptr, &oper_conf_list);
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, server_conf_list.head)
{
server_p = ptr->data;
if(!server_p->servers)
{
rb_dlinkDelete(ptr, &server_conf_list);
free_server_conf(ptr->data);
}
else
server_p->flags |= SERVER_ILLEGAL;
}
}
void
clear_s_newconf_bans(void)
{
struct ConfItem *aconf;
rb_dlink_node *ptr, *next_ptr;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
{
aconf = ptr->data;
if(aconf->flags & CONF_FLAGS_TEMPORARY)
continue;
free_conf(aconf);
rb_dlinkDestroy(ptr, &xline_conf_list);
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
{
aconf = ptr->data;
/* temporary resv */
if(aconf->flags & CONF_FLAGS_TEMPORARY)
continue;
free_conf(aconf);
rb_dlinkDestroy(ptr, &resv_conf_list);
}
clear_resv_hash();
}
struct remote_conf *
make_remote_conf(void)
{
struct remote_conf *remote_p = rb_malloc(sizeof(struct remote_conf));
return remote_p;
}
void
free_remote_conf(struct remote_conf *remote_p)
{
s_assert(remote_p != NULL);
if(remote_p == NULL)
return;
rb_free(remote_p->username);
rb_free(remote_p->host);
rb_free(remote_p->server);
rb_free(remote_p);
}
int
find_shared_conf(const char *username, const char *host, const char *server, int flags)
{
struct remote_conf *shared_p;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, shared_conf_list.head)
{
shared_p = ptr->data;
if(match(shared_p->username, username) &&
match(shared_p->host, host) && match(shared_p->server, server))
{
if(shared_p->flags & flags)
return YES;
else
return NO;
}
}
return NO;
}
void
cluster_generic(struct Client *source_p, const char *command, int cltype, const char *format, ...)
{
char buffer[BUFSIZE];
struct remote_conf *shared_p;
va_list args;
rb_dlink_node *ptr;
va_start(args, format);
rb_vsnprintf(buffer, sizeof(buffer), format, args);
va_end(args);
RB_DLINK_FOREACH(ptr, cluster_conf_list.head)
{
shared_p = ptr->data;
if(!(shared_p->flags & cltype))
continue;
sendto_match_servs(source_p, shared_p->server, CAP_ENCAP, NOCAPS,
"ENCAP %s %s %s", shared_p->server, command, buffer);
}
}
static void
expire_glines(void *unused)
{
struct ConfItem *aconf;
rb_dlink_node *ptr, *next_ptr;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, glines.head)
{
aconf = ptr->data;
/* if gline_time changes, these could end up out of order */
if(aconf->hold > rb_current_time())
continue;
delete_one_address_conf(aconf->host, aconf);
rb_dlinkDestroy(ptr, &glines);
}
}
struct oper_conf *
make_oper_conf(void)
{
struct oper_conf *oper_p = rb_malloc(sizeof(struct oper_conf));
return oper_p;
}
void
free_oper_conf(struct oper_conf *oper_p)
{
s_assert(oper_p != NULL);
if(oper_p == NULL)
return;
rb_free(oper_p->username);
rb_free(oper_p->host);
rb_free(oper_p->name);
if(oper_p->passwd)
{
memset(oper_p->passwd, 0, strlen(oper_p->passwd));
rb_free(oper_p->passwd);
}
#ifdef USE_CHALLENGE
rb_free(oper_p->rsa_pubkey_file);
if(oper_p->rsa_pubkey)
RSA_free(oper_p->rsa_pubkey);
#endif
rb_free(oper_p);
}
struct oper_conf *
find_oper_conf(const char *username, const char *host, const char *locip, const char *name)
{
struct oper_conf *oper_p;
struct rb_sockaddr_storage ip, cip;
char addr[HOSTLEN + 1];
int bits, cbits;
rb_dlink_node *ptr;
parse_netmask(locip, (struct sockaddr *)&cip, &cbits);
RB_DLINK_FOREACH(ptr, oper_conf_list.head)
{
oper_p = ptr->data;
/* name/username doesnt match.. */
if(irccmp(oper_p->name, name) || !match(oper_p->username, username))
continue;
rb_strlcpy(addr, oper_p->host, sizeof(addr));
if(parse_netmask(addr, (struct sockaddr *)&ip, &bits) != HM_HOST)
{
if(GET_SS_FAMILY(&ip) == GET_SS_FAMILY(&cip) &&
comp_with_mask_sock((struct sockaddr *)&ip, (struct sockaddr *)&cip,
bits))
return oper_p;
}
/* we have to compare against the host as well, because its
* valid to set a spoof to an IP, which if we only compare
* in ip form to sockhost will not necessarily match --anfl
*/
if(match(oper_p->host, host))
return oper_p;
}
return NULL;
}
struct oper_flags
{
int flag;
char has;
char hasnt;
};
static struct oper_flags oper_flagtable[] = {
{OPER_GLINE, 'G', 'g'},
{OPER_KLINE, 'K', 'k'},
{OPER_XLINE, 'X', 'x'},
{OPER_RESV, 'Q', 'q'},
{OPER_GLOBKILL, 'O', 'o'},
{OPER_LOCKILL, 'C', 'c'},
{OPER_REMOTE, 'R', 'r'},
{OPER_UNKLINE, 'U', 'u'},
{OPER_REHASH, 'H', 'h'},
{OPER_DIE, 'D', 'd'},
{OPER_ADMIN, 'A', 'a'},
{OPER_NICKS, 'N', 'n'},
{OPER_OPERWALL, 'L', 'l'},
{OPER_SPY, 'S', 's'},
{OPER_INVIS, 'P', 'p'},
{OPER_REMOTEBAN, 'B', 'b'},
{0, '\0', '\0'}
};
const char *
get_oper_privs(int flags)
{
static char buf[20];
char *p;
int i;
p = buf;
for(i = 0; oper_flagtable[i].flag; i++)
{
if(flags & oper_flagtable[i].flag)
*p++ = oper_flagtable[i].has;
else
*p++ = oper_flagtable[i].hasnt;
}
*p = '\0';
return buf;
}
struct server_conf *
make_server_conf(void)
{
struct server_conf *server_p = rb_malloc(sizeof(struct server_conf));
SET_SS_FAMILY(&server_p->ipnum, AF_INET);
return server_p;
}
void
free_server_conf(struct server_conf *server_p)
{
s_assert(server_p != NULL);
if(server_p == NULL)
return;
if(!EmptyString(server_p->passwd))
{
memset(server_p->passwd, 0, strlen(server_p->passwd));
rb_free(server_p->passwd);
}
if(!EmptyString(server_p->spasswd))
{
memset(server_p->spasswd, 0, strlen(server_p->spasswd));
rb_free(server_p->spasswd);
}
cancel_lookup(server_p->dns_query);
rb_free(server_p->name);
rb_free(server_p->host);
rb_free(server_p->class_name);
rb_free(server_p);
}
/*
* conf_dns_callback
* inputs - pointer to struct ConfItem
* - pointer to adns reply
* output - none
* side effects - called when resolver query finishes
* if the query resulted in a successful search, hp will contain
* a non-null pointer, otherwise hp will be null.
* if successful save hp in the conf item it was called with
*/
static void
conf_dns_callback(const char *result, int status, int aftype, void *data)
{
struct server_conf *server_p = data;
if(status == 1)
rb_inet_pton_sock(result, (struct sockaddr *)&server_p->ipnum);
server_p->dns_query = 0;
}
void
add_server_conf(struct server_conf *server_p)
{
if(EmptyString(server_p->class_name))
server_p->class = default_class;
else
server_p->class = find_class(server_p->class_name);
if(server_p->class == default_class)
{
conf_report_error("Warning connect::class invalid for %s", server_p->name);
rb_free(server_p->class_name);
server_p->class_name = rb_strdup("default");
}
if(strpbrk(server_p->host, "?*") != NULL)
return;
if(rb_inet_pton_sock(server_p->host, (struct sockaddr *)&server_p->ipnum) > 0)
return;
server_p->dns_query =
lookup_hostname(server_p->host, GET_SS_FAMILY(&server_p->ipnum), conf_dns_callback,
server_p);
}
struct server_conf *
find_server_conf(const char *name)
{
struct server_conf *server_p;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, server_conf_list.head)
{
server_p = ptr->data;
if(ServerConfIllegal(server_p))
continue;
if(match(name, server_p->name))
return server_p;
}
return NULL;
}
void
attach_server_conf(struct Client *client_p, struct server_conf *server_p)
{
/* already have an attached conf */
if(client_p->localClient->att_sconf)
{
/* short circuit this special case :) */
if(client_p->localClient->att_sconf == server_p)
return;
detach_server_conf(client_p);
}
CurrUsers(server_p->class)++;
client_p->localClient->att_sconf = server_p;
server_p->servers++;
}
void
detach_server_conf(struct Client *client_p)
{
struct server_conf *server_p = client_p->localClient->att_sconf;
if(server_p == NULL)
return;
client_p->localClient->att_sconf = NULL;
server_p->servers--;
CurrUsers(server_p->class)--;
if(ServerConfIllegal(server_p) && !server_p->servers)
{
/* the class this one is using may need destroying too */
if(MaxUsers(server_p->class) < 0 && CurrUsers(server_p->class) <= 0)
free_class(server_p->class);
rb_dlinkDelete(&server_p->node, &server_conf_list);
free_server_conf(server_p);
}
}
void
set_server_conf_autoconn(struct Client *source_p, char *name, int newval)
{
struct server_conf *server_p;
if((server_p = find_server_conf(name)) != NULL)
{
if(newval)
server_p->flags |= SERVER_AUTOCONN;
else
server_p->flags &= ~SERVER_AUTOCONN;
sendto_realops_flags(UMODE_ALL, L_ALL,
"%s has changed AUTOCONN for %s to %i",
get_oper_name(source_p), name, newval);
}
else
sendto_one_notice(source_p, ":Can't find %s", name);
}
struct ConfItem *
find_xline(const char *gecos, int counter)
{
struct ConfItem *aconf;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, xline_conf_list.head)
{
aconf = ptr->data;
if(match_esc(aconf->host, gecos))
{
if(counter)
aconf->port++;
return aconf;
}
}
return NULL;
}
struct ConfItem *
find_xline_mask(const char *gecos)
{
struct ConfItem *aconf;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, xline_conf_list.head)
{
aconf = ptr->data;
if(!irccmp(aconf->host, gecos))
return aconf;
}
return NULL;
}
struct ConfItem *
find_nick_resv(const char *name)
{
struct ConfItem *aconf;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, resv_conf_list.head)
{
aconf = ptr->data;
if(match_esc(aconf->host, name))
{
aconf->port++;
return aconf;
}
}
return NULL;
}
struct ConfItem *
find_nick_resv_mask(const char *name)
{
struct ConfItem *aconf;
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, resv_conf_list.head)
{
aconf = ptr->data;
if(!irccmp(aconf->host, name))
return aconf;
}
return NULL;
}
/* clean_resv_nick()
*
* inputs - nick
* outputs - 1 if nick is vaild resv, 0 otherwise
* side effects -
*/
int
clean_resv_nick(const char *nick)
{
char tmpch;
int as = 0;
int q = 0;
int ch = 0;
if(*nick == '-' || IsDigit(*nick))
return 0;
while((tmpch = *nick++))
{
if(tmpch == '?' || tmpch == '@' || tmpch == '#')
q++;
else if(tmpch == '*')
as++;
else if(IsNickChar(tmpch))
ch++;
else
return 0;
}
if(!ch && as)
return 0;
return 1;
}
/* valid_wild_card_simple()
*
* inputs - "thing" to test
* outputs - 1 if enough wildcards, else 0
* side effects -
*/
int
valid_wild_card_simple(const char *data)
{
const char *p;
char tmpch;
int nonwild = 0;
/* check the string for minimum number of nonwildcard chars */
p = data;
while((tmpch = *p++))
{
/* found an escape, p points to the char after it, so skip
* that and move on.
*/
if(tmpch == '\\')
{
p++;
if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
return 1;
}
else if(!IsMWildChar(tmpch))
{
/* if we have enough nonwildchars, return */
if(++nonwild >= ConfigFileEntry.min_nonwildcard_simple)
return 1;
}
}
return 0;
}
time_t
valid_temp_time(const char *p)
{
time_t result = 0;
while(*p)
{
if(IsDigit(*p))
{
result *= 10;
result += ((*p) & 0xF);
p++;
}
else
return -1;
}
if(result > (60 * 24 * 7 * 52))
result = (60 * 24 * 7 * 52);
return (result * 60);
}
static void
expire_temp_rxlines(void *unused)
{
struct ConfItem *aconf;
rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
int i;
HASH_WALK_SAFE(i, R_MAX, ptr, next_ptr, resvTable)
{
aconf = ptr->data;
if((aconf->flags & CONF_FLAGS_TEMPORARY) && aconf->hold <= rb_current_time())
{
if(ConfigFileEntry.tkline_expire_notices)
sendto_realops_flags(UMODE_ALL, L_ALL,
"Temporary RESV for [%s] expired",
aconf->host);
free_conf(aconf);
rb_dlinkDestroy(ptr, &resvTable[i]);
}
}
HASH_WALK_END RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
{
aconf = ptr->data;
if((aconf->flags & CONF_FLAGS_TEMPORARY) && aconf->hold <= rb_current_time())
{
if(ConfigFileEntry.tkline_expire_notices)
sendto_realops_flags(UMODE_ALL, L_ALL,
"Temporary RESV for [%s] expired",
aconf->host);
free_conf(aconf);
rb_dlinkDestroy(ptr, &resv_conf_list);
}
}
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
{
aconf = ptr->data;
if((aconf->flags & CONF_FLAGS_TEMPORARY) && aconf->hold <= rb_current_time())
{
if(ConfigFileEntry.tkline_expire_notices)
sendto_realops_flags(UMODE_ALL, L_ALL,
"Temporary X-line for [%s] expired",
aconf->host);
free_conf(aconf);
rb_dlinkDestroy(ptr, &xline_conf_list);
}
}
}
unsigned long
get_nd_count(void)
{
return (rb_dlink_list_length(&nd_list));
}
void
add_nd_entry(const char *name)
{
struct nd_entry *nd;
if(hash_find_nd(name) != NULL)
return;
nd = rb_bh_alloc(nd_heap);
rb_strlcpy(nd->name, name, sizeof(nd->name));
nd->expire = rb_current_time() + ConfigFileEntry.nick_delay;
/* this list is ordered */
rb_dlinkAddTail(nd, &nd->lnode, &nd_list);
add_to_nd_hash(name, nd);
}
void
free_nd_entry(struct nd_entry *nd)
{
rb_dlinkDelete(&nd->lnode, &nd_list);
rb_dlinkDelete(&nd->hnode, &ndTable[nd->hashv]);
rb_bh_free(nd_heap, nd);
}
void
expire_nd_entries(void *unused)
{
struct nd_entry *nd;
rb_dlink_node *ptr;
rb_dlink_node *next_ptr;
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, nd_list.head)
{
nd = ptr->data;
/* this list is ordered - we can stop when we hit the first
* entry that doesnt expire..
*/
if(nd->expire > rb_current_time())
return;
free_nd_entry(nd);
}
}
void
add_tgchange(const char *host)
{
tgchange *target;
rb_patricia_node_t *pnode;
if(find_tgchange(host))
return;
target = rb_malloc(sizeof(tgchange));
pnode = make_and_lookup(tgchange_tree, host);
pnode->data = target;
target->pnode = pnode;
target->ip = rb_strdup(host);
target->expiry = rb_current_time() + (60 * 60 * 12);
rb_dlinkAdd(target, &target->node, &tgchange_list);
}
tgchange *
find_tgchange(const char *host)
{
rb_patricia_node_t *pnode;
if((pnode = rb_match_exact_string(tgchange_tree, host)))
return pnode->data;
return NULL;
}
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