mirror of https://github.com/pissnet/pissircd.git
468 lines
10 KiB
C
468 lines
10 KiB
C
/*
|
|
* hideserver.c - Hide certain or all servers from /MAP & /LINKS
|
|
*
|
|
* Note that this module simple hides servers. It does not truly
|
|
* increase security. Use as you wish.
|
|
*
|
|
* (C) Copyright 2003-2004 AngryWolf <angrywolf@flashmail.com>
|
|
* (C) Copyright 2016 Bram Matthys <syzop@vulnscan.org>
|
|
*
|
|
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "unrealircd.h"
|
|
|
|
CMD_OVERRIDE_FUNC(override_map);
|
|
CMD_OVERRIDE_FUNC(override_links);
|
|
static int cb_test(ConfigFile *, ConfigEntry *, int, int *);
|
|
static int cb_conf(ConfigFile *, ConfigEntry *, int);
|
|
|
|
ConfigItem_ulines *HiddenServers;
|
|
|
|
static struct
|
|
{
|
|
unsigned disable_map : 1;
|
|
unsigned disable_links : 1;
|
|
char *map_deny_message;
|
|
char *links_deny_message;
|
|
} Settings;
|
|
|
|
static ModuleInfo *MyModInfo;
|
|
#define MyMod MyModInfo->handle
|
|
#define SAVE_MODINFO MyModInfo = modinfo;
|
|
|
|
static int lmax = 0;
|
|
static int umax = 0;
|
|
|
|
static int dcount(int n)
|
|
{
|
|
int cnt = 0;
|
|
|
|
while (n != 0)
|
|
{
|
|
n = n/10;
|
|
cnt++;
|
|
}
|
|
|
|
return cnt;
|
|
}
|
|
|
|
ModuleHeader MOD_HEADER
|
|
= {
|
|
"hideserver",
|
|
"5.0",
|
|
"Hide servers from /MAP & /LINKS",
|
|
"UnrealIRCd Team",
|
|
"unrealircd-6",
|
|
};
|
|
|
|
static void InitConf()
|
|
{
|
|
memset(&Settings, 0, sizeof Settings);
|
|
}
|
|
|
|
static void FreeConf()
|
|
{
|
|
ConfigItem_ulines *h, *next;
|
|
|
|
safe_free(Settings.map_deny_message);
|
|
safe_free(Settings.links_deny_message);
|
|
|
|
for (h = HiddenServers; h; h = next)
|
|
{
|
|
next = h->next;
|
|
DelListItem(h, HiddenServers);
|
|
safe_free(h->servername);
|
|
safe_free(h);
|
|
}
|
|
}
|
|
|
|
MOD_TEST()
|
|
{
|
|
SAVE_MODINFO
|
|
HookAdd(modinfo->handle, HOOKTYPE_CONFIGTEST, 0, cb_test);
|
|
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
MOD_INIT()
|
|
{
|
|
MARK_AS_OFFICIAL_MODULE(modinfo);
|
|
SAVE_MODINFO
|
|
HiddenServers = NULL;
|
|
InitConf();
|
|
|
|
HookAdd(modinfo->handle, HOOKTYPE_CONFIGRUN, 0, cb_conf);
|
|
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
MOD_LOAD()
|
|
{
|
|
if (!CommandOverrideAdd(MyMod, "MAP", 0, override_map))
|
|
return MOD_FAILED;
|
|
|
|
if (!CommandOverrideAdd(MyMod, "LINKS", 0, override_links))
|
|
return MOD_FAILED;
|
|
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
MOD_UNLOAD()
|
|
{
|
|
FreeConf();
|
|
|
|
return MOD_SUCCESS;
|
|
}
|
|
|
|
static int cb_test(ConfigFile *cf, ConfigEntry *ce, int type, int *errs)
|
|
{
|
|
ConfigEntry *cep;
|
|
int errors = 0;
|
|
|
|
if (type == CONFIG_MAIN)
|
|
{
|
|
if (!strcmp(ce->name, "hideserver"))
|
|
{
|
|
for (cep = ce->items; cep; cep = cep->next)
|
|
{
|
|
if (!strcmp(cep->name, "hide"))
|
|
{
|
|
/* No checking needed */
|
|
}
|
|
else if (!cep->value)
|
|
{
|
|
config_error("%s:%i: %s::%s without value",
|
|
cep->file->filename,
|
|
cep->line_number,
|
|
ce->name, cep->name);
|
|
errors++;
|
|
continue;
|
|
}
|
|
else if (!strcmp(cep->name, "disable-map"))
|
|
;
|
|
else if (!strcmp(cep->name, "disable-links"))
|
|
;
|
|
else if (!strcmp(cep->name, "map-deny-message"))
|
|
;
|
|
else if (!strcmp(cep->name, "links-deny-message"))
|
|
;
|
|
else
|
|
{
|
|
config_error("%s:%i: unknown directive hideserver::%s",
|
|
cep->file->filename, cep->line_number, cep->name);
|
|
errors++;
|
|
}
|
|
}
|
|
*errs = errors;
|
|
return errors ? -1 : 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cb_conf(ConfigFile *cf, ConfigEntry *ce, int type)
|
|
{
|
|
ConfigEntry *cep, *cepp;
|
|
ConfigItem_ulines *ca;
|
|
|
|
if (type == CONFIG_MAIN)
|
|
{
|
|
if (!strcmp(ce->name, "hideserver"))
|
|
{
|
|
for (cep = ce->items; cep; cep = cep->next)
|
|
{
|
|
if (!strcmp(cep->name, "disable-map"))
|
|
Settings.disable_map = config_checkval(cep->value, CFG_YESNO);
|
|
else if (!strcmp(cep->name, "disable-links"))
|
|
Settings.disable_links = config_checkval(cep->value, CFG_YESNO);
|
|
else if (!strcmp(cep->name, "map-deny-message"))
|
|
{
|
|
safe_strdup(Settings.map_deny_message, cep->value);
|
|
}
|
|
else if (!strcmp(cep->name, "links-deny-message"))
|
|
{
|
|
safe_strdup(Settings.links_deny_message, cep->value);
|
|
}
|
|
else if (!strcmp(cep->name, "hide"))
|
|
{
|
|
for (cepp = cep->items; cepp; cepp = cepp->next)
|
|
{
|
|
if (!strcasecmp(cepp->name, me.name))
|
|
continue;
|
|
|
|
ca = safe_alloc(sizeof(ConfigItem_ulines));
|
|
safe_strdup(ca->servername, cepp->name);
|
|
AddListItem(ca, HiddenServers);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
ConfigItem_ulines *FindHiddenServer(char *servername)
|
|
{
|
|
ConfigItem_ulines *h;
|
|
|
|
for (h = HiddenServers; h; h = h->next)
|
|
if (!strcasecmp(servername, h->servername))
|
|
break;
|
|
|
|
return h;
|
|
}
|
|
|
|
/*
|
|
* New /MAP format -Potvin
|
|
* dump_map function.
|
|
*/
|
|
static void dump_map(Client *client, Client *server, char *mask, int prompt_length, int length)
|
|
{
|
|
static char prompt[64];
|
|
char *p = &prompt[prompt_length];
|
|
int cnt = 0;
|
|
Client *acptr;
|
|
|
|
*p = '\0';
|
|
|
|
if (prompt_length > 60)
|
|
sendnumeric(client, RPL_MAPMORE, prompt, length, server->name);
|
|
else
|
|
{
|
|
char tbuf[256];
|
|
char sid[10];
|
|
int len = length - strlen(server->name) + 1;
|
|
|
|
if (len < 0)
|
|
len = 0;
|
|
if (len > 255)
|
|
len = 255;
|
|
|
|
tbuf[len--] = '\0';
|
|
while (len >= 0)
|
|
tbuf[len--] = '-';
|
|
if (IsOper(client))
|
|
snprintf(sid, sizeof(sid), " [%s]", server->id);
|
|
sendnumeric(client, RPL_MAP, prompt, server->name, tbuf, umax,
|
|
server->server->users, (double)(lmax < 10) ? 4 : (lmax == 100) ? 6 : 5,
|
|
(server->server->users * 100.0 / irccounts.clients),
|
|
IsOper(client) ? sid : "");
|
|
cnt = 0;
|
|
}
|
|
|
|
if (prompt_length > 0)
|
|
{
|
|
p[-1] = ' ';
|
|
if (p[-2] == '`')
|
|
p[-2] = ' ';
|
|
}
|
|
if (prompt_length > 60)
|
|
return;
|
|
|
|
strcpy(p, "|-");
|
|
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
if (acptr->uplink != server ||
|
|
(IsULine(acptr) && HIDE_ULINES && !ValidatePermissionsForPath("server:info:map:ulines",client,NULL,NULL,NULL)))
|
|
continue;
|
|
if (FindHiddenServer(acptr->name))
|
|
break;
|
|
SetMap(acptr);
|
|
cnt++;
|
|
}
|
|
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
if (IsULine(acptr) && HIDE_ULINES && !ValidatePermissionsForPath("server:info:map:ulines",client,NULL,NULL,NULL))
|
|
continue;
|
|
if (FindHiddenServer(acptr->name))
|
|
break;
|
|
if (acptr->uplink != server)
|
|
continue;
|
|
if (!IsMap(acptr))
|
|
continue;
|
|
if (--cnt == 0)
|
|
*p = '`';
|
|
dump_map(client, acptr, mask, prompt_length + 2, length - 2);
|
|
}
|
|
|
|
if (prompt_length > 0)
|
|
p[-1] = '-';
|
|
}
|
|
|
|
void dump_flat_map(Client *client, Client *server, int length)
|
|
{
|
|
char buf[4];
|
|
char tbuf[256];
|
|
Client *acptr;
|
|
int cnt = 0, len = 0, hide_ulines;
|
|
|
|
hide_ulines = (HIDE_ULINES && !ValidatePermissionsForPath("server:info:map:ulines",client,NULL,NULL,NULL)) ? 1 : 0;
|
|
|
|
len = length - strlen(server->name) + 3;
|
|
if (len < 0)
|
|
len = 0;
|
|
if (len > 255)
|
|
len = 255;
|
|
|
|
tbuf[len--] = '\0';
|
|
while (len >= 0)
|
|
tbuf[len--] = '-';
|
|
|
|
sendnumeric(client, RPL_MAP, "", server->name, tbuf, umax, server->server->users,
|
|
(lmax < 10) ? 4 : (lmax == 100) ? 6 : 5,
|
|
(server->server->users * 100.0 / irccounts.clients), "");
|
|
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
if ((IsULine(acptr) && hide_ulines) || (acptr == server))
|
|
continue;
|
|
if (FindHiddenServer(acptr->name))
|
|
break;
|
|
cnt++;
|
|
}
|
|
|
|
strcpy(buf, "|-");
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
if ((IsULine(acptr) && hide_ulines) || (acptr == server))
|
|
continue;
|
|
if (FindHiddenServer(acptr->name))
|
|
break;
|
|
if (--cnt == 0)
|
|
*buf = '`';
|
|
|
|
len = length - strlen(acptr->name) + 1;
|
|
if (len < 0)
|
|
len = 0;
|
|
if (len > 255)
|
|
len = 255;
|
|
|
|
tbuf[len--] = '\0';
|
|
while (len >= 0)
|
|
tbuf[len--] = '-';
|
|
|
|
sendnumeric(client, RPL_MAP, buf, acptr->name, tbuf, umax, acptr->server->users,
|
|
(lmax < 10) ? 4 : (lmax == 100) ? 6 : 5,
|
|
(acptr->server->users * 100.0 / irccounts.clients), "");
|
|
}
|
|
}
|
|
|
|
/*
|
|
** New /MAP format. -Potvin
|
|
** cmd_map (NEW)
|
|
**
|
|
** parv[1] = server mask
|
|
**/
|
|
CMD_OVERRIDE_FUNC(override_map)
|
|
{
|
|
Client *acptr;
|
|
int longest = strlen(me.name);
|
|
float avg_users = 0.0;
|
|
|
|
umax = 0;
|
|
lmax = 0;
|
|
|
|
if (parc < 2)
|
|
parv[1] = "*";
|
|
|
|
if (IsOper(client))
|
|
{
|
|
CALL_NEXT_COMMAND_OVERRIDE();
|
|
return;
|
|
}
|
|
|
|
if (Settings.disable_map)
|
|
{
|
|
if (Settings.map_deny_message)
|
|
sendnotice(client, "%s", Settings.map_deny_message);
|
|
else
|
|
sendnumeric(client, RPL_MAPEND);
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
int perc = 0;
|
|
if (FindHiddenServer(acptr->name))
|
|
break;
|
|
perc = (acptr->server->users * 100 / irccounts.clients);
|
|
if ((strlen(acptr->name) + acptr->hopcount * 2) > longest)
|
|
longest = strlen(acptr->name) + acptr->hopcount * 2;
|
|
if (lmax < perc)
|
|
lmax = perc;
|
|
if (umax < dcount(acptr->server->users))
|
|
umax = dcount(acptr->server->users);
|
|
}
|
|
|
|
if (longest > 60)
|
|
longest = 60;
|
|
longest += 2;
|
|
|
|
if (FLAT_MAP && !ValidatePermissionsForPath("server:info:map:real-map",client,NULL,NULL,NULL))
|
|
dump_flat_map(client, &me, longest);
|
|
else
|
|
dump_map(client, &me, "*", 0, longest);
|
|
|
|
avg_users = irccounts.clients * 1.0 / irccounts.servers;
|
|
sendnumeric(client, RPL_MAPUSERS, irccounts.servers, (irccounts.servers > 1 ? "s" : ""), irccounts.clients,
|
|
(irccounts.clients > 1 ? "s" : ""), avg_users);
|
|
sendnumeric(client, RPL_MAPEND);
|
|
}
|
|
|
|
CMD_OVERRIDE_FUNC(override_links)
|
|
{
|
|
Client *acptr;
|
|
int flat = (FLAT_MAP && !IsOper(client)) ? 1 : 0;
|
|
|
|
if (IsOper(client))
|
|
{
|
|
CALL_NEXT_COMMAND_OVERRIDE();
|
|
return;
|
|
}
|
|
|
|
if (Settings.disable_links)
|
|
{
|
|
if (Settings.links_deny_message)
|
|
sendnotice(client, "%s", Settings.links_deny_message);
|
|
else
|
|
sendnumeric(client, RPL_ENDOFLINKS, "*");
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry(acptr, &global_server_list, client_node)
|
|
{
|
|
/* Some checks */
|
|
if (HIDE_ULINES && IsULine(acptr) && !ValidatePermissionsForPath("server:info:map:ulines",client,NULL,NULL,NULL))
|
|
continue;
|
|
if (FindHiddenServer(acptr->name))
|
|
continue;
|
|
if (flat)
|
|
sendnumeric(client, RPL_LINKS, acptr->name, me.name,
|
|
1, (acptr->info[0] ? acptr->info : "(Unknown Location)"));
|
|
else
|
|
sendnumeric(client, RPL_LINKS, acptr->name, acptr->uplink ? acptr->uplink->name : me.name,
|
|
acptr->hopcount, (acptr->info[0] ? acptr->info : "(Unknown Location)"));
|
|
}
|
|
|
|
sendnumeric(client, RPL_ENDOFLINKS, "*");
|
|
}
|