3c7d6fcce7
Also fix up some return values and stuff to use bool (or void if nothing). I just did it whilst I was here. According to jilles, the return value used to signify whether or not the client had exited. This was error-prone and was fixed a long, long time ago, but the return value was left int for historical reasons. Since the return type is not used (and has no clear use case anyway), it's safe to just get rid of it.
278 lines
6.9 KiB
C
278 lines
6.9 KiB
C
/*
|
|
* charybdis: an advanced Internet Relay Chat Daemon(ircd).
|
|
* m_scan.c: Provides information about various targets on various topics
|
|
*
|
|
* Copyright (c) 2006 William Pitcock <nenolod -at- nenolod.net>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "stdinc.h"
|
|
#include "class.h"
|
|
#include "hook.h"
|
|
#include "client.h"
|
|
#include "hash.h"
|
|
#include "common.h"
|
|
#include "hash.h"
|
|
#include "match.h"
|
|
#include "ircd.h"
|
|
#include "numeric.h"
|
|
#include "s_serv.h"
|
|
#include "s_conf.h"
|
|
#include "s_newconf.h"
|
|
#include "s_user.h"
|
|
#include "send.h"
|
|
#include "msg.h"
|
|
#include "parse.h"
|
|
#include "modules.h"
|
|
#include "logger.h"
|
|
|
|
static const char scan_desc[] =
|
|
"Provides the SCAN command to show users that have a mode set or cleared";
|
|
|
|
static void mo_scan(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
|
|
static void scan_umodes(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
|
|
|
|
struct Message scan_msgtab = {
|
|
"SCAN", 0, 0, 0, 0,
|
|
{mg_ignore, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_scan, 2}}
|
|
};
|
|
|
|
mapi_clist_av1 scan_clist[] = { &scan_msgtab, NULL };
|
|
|
|
DECLARE_MODULE_AV2(scan, NULL, NULL, scan_clist, NULL, NULL, NULL, NULL, scan_desc);
|
|
|
|
typedef void (*scan_handler)(struct MsgBuf *, struct Client *, struct Client *, int,
|
|
const char **);
|
|
|
|
struct scan_cmd {
|
|
const char *name;
|
|
int operlevel;
|
|
scan_handler handler;
|
|
} scan_cmds[] = {
|
|
{"UMODES", L_OPER, scan_umodes},
|
|
{NULL, 0, NULL}
|
|
};
|
|
|
|
static const char *empty_sockhost = "255.255.255.255";
|
|
static const char *spoofed_sockhost = "0";
|
|
|
|
/*
|
|
* m_scan
|
|
* parv[1] = options [or target]
|
|
* parv[2] = [target]
|
|
*/
|
|
static void
|
|
mo_scan(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
|
|
const char *parv[])
|
|
{
|
|
struct scan_cmd *sptr;
|
|
|
|
for (sptr = scan_cmds; sptr->name != NULL; sptr++)
|
|
{
|
|
if (!irccmp(sptr->name, parv[1]))
|
|
{
|
|
if (!(sptr->operlevel == L_ADMIN && !IsOperAdmin(source_p)))
|
|
sptr->handler(msgbuf_p, client_p, source_p, parc, parv);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
sendto_one_notice(source_p, ":*** %s is not an implemented SCAN target",
|
|
parv[1]);
|
|
}
|
|
|
|
static void
|
|
scan_umodes(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc,
|
|
const char *parv[])
|
|
{
|
|
unsigned int allowed_umodes = 0, disallowed_umodes = 0;
|
|
int what = MODE_ADD;
|
|
int mode;
|
|
bool list_users = true;
|
|
int list_max = 500;
|
|
int list_count = 0, count = 0;
|
|
const char *mask = NULL;
|
|
const char *c;
|
|
struct Client *target_p;
|
|
rb_dlink_list *target_list = &lclient_list; /* local clients only by default */
|
|
rb_dlink_node *tn;
|
|
int i;
|
|
const char *sockhost;
|
|
char buf[512];
|
|
|
|
if (parc < 3)
|
|
{
|
|
if (MyClient(source_p))
|
|
sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
|
|
me.name, source_p->name, "SCAN UMODES");
|
|
|
|
return;
|
|
}
|
|
|
|
if (parv[2][0] != '+' && parv[2][0] != '-')
|
|
{
|
|
sendto_one_notice(source_p, ":SCAN UMODES: umodes parameter must start with '+' or '-'");
|
|
return;
|
|
}
|
|
|
|
for (c = parv[2]; *c; c++)
|
|
{
|
|
switch(*c)
|
|
{
|
|
case '+':
|
|
what = MODE_ADD;
|
|
break;
|
|
case '-':
|
|
what = MODE_DEL;
|
|
break;
|
|
default:
|
|
if ((mode = user_modes[(unsigned char) *c]) != 0)
|
|
{
|
|
if (what == MODE_ADD)
|
|
allowed_umodes |= mode;
|
|
else
|
|
disallowed_umodes |= mode;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 3; i < parc; i++)
|
|
{
|
|
if (!irccmp(parv[i], "no-list"))
|
|
list_users = false;
|
|
else if (!irccmp(parv[i], "list"))
|
|
list_users = true;
|
|
else if (!irccmp(parv[i], "global"))
|
|
target_list = &global_client_list;
|
|
else if (i < (parc - 1))
|
|
{
|
|
if (!irccmp(parv[i], "list-max"))
|
|
list_max = atoi(parv[++i]);
|
|
else if (!irccmp(parv[i], "mask"))
|
|
mask = parv[++i];
|
|
else
|
|
{
|
|
sendto_one_notice(source_p, ":SCAN UMODES: invalid parameters");
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sendto_one_notice(source_p, ":SCAN UMODES: invalid parameters");
|
|
return;
|
|
}
|
|
}
|
|
if (target_list == &global_client_list && list_users)
|
|
{
|
|
if (IsOperSpy(source_p))
|
|
{
|
|
if (!ConfigFileEntry.operspy_dont_care_user_info)
|
|
{
|
|
rb_strlcpy(buf, "UMODES", sizeof buf);
|
|
for (i = 2; i < parc; i++)
|
|
{
|
|
rb_strlcat(buf, " ", sizeof buf);
|
|
rb_strlcat(buf, parv[i], sizeof buf);
|
|
}
|
|
report_operspy(source_p, "SCAN", buf);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sendto_one(source_p, form_str(ERR_NOPRIVS),
|
|
me.name, source_p->name, "oper_spy");
|
|
return;
|
|
}
|
|
}
|
|
|
|
RB_DLINK_FOREACH(tn, target_list->head)
|
|
{
|
|
unsigned int working_umodes = 0;
|
|
char maskbuf[BUFSIZE];
|
|
|
|
target_p = tn->data;
|
|
|
|
if (!IsClient(target_p))
|
|
continue;
|
|
|
|
if(EmptyString(target_p->sockhost))
|
|
sockhost = empty_sockhost;
|
|
else if(!show_ip(source_p, target_p))
|
|
sockhost = spoofed_sockhost;
|
|
else
|
|
sockhost = target_p->sockhost;
|
|
|
|
working_umodes = target_p->umodes;
|
|
|
|
/* require that we have the allowed umodes... */
|
|
if ((working_umodes & allowed_umodes) != allowed_umodes)
|
|
continue;
|
|
|
|
/* require that we have NONE of the disallowed ones */
|
|
if ((working_umodes & disallowed_umodes) != 0)
|
|
continue;
|
|
|
|
if (mask != NULL)
|
|
{
|
|
snprintf(maskbuf, BUFSIZE, "%s!%s@%s",
|
|
target_p->name, target_p->username, target_p->host);
|
|
|
|
if (!match(mask, maskbuf))
|
|
continue;
|
|
}
|
|
|
|
if (list_users && (!list_max || (list_count < list_max)))
|
|
{
|
|
char modebuf[BUFSIZE];
|
|
char *m = modebuf;
|
|
|
|
*m++ = '+';
|
|
|
|
for (i = 0; i < 128; i++)
|
|
{
|
|
if (target_p->umodes & user_modes[i])
|
|
*m++ = (char) i;
|
|
}
|
|
|
|
*m++ = '\0';
|
|
|
|
list_count++;
|
|
|
|
sendto_one_numeric(source_p, RPL_SCANUMODES,
|
|
form_str(RPL_SCANUMODES),
|
|
target_p->name, target_p->username,
|
|
target_p->host, sockhost,
|
|
target_p->servptr->name, modebuf,
|
|
target_p->info);
|
|
}
|
|
count++;
|
|
}
|
|
|
|
sendto_one_numeric(source_p, RPL_SCANMATCHED,
|
|
form_str(RPL_SCANMATCHED), count);
|
|
}
|