2 * charybdis: an advanced Internet Relay Chat Daemon(ircd).
3 * m_scan.c: Provides information about various targets on various topics
5 * Copyright (c) 2006 William Pitcock <nenolod -at- nenolod.net>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
11 * 1.Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2.Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3.The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
28 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
31 * $Id: m_scan.c 1853 2006-08-24 18:30:52Z jilles $
46 #include "s_newconf.h"
54 static int mo_scan(struct MsgBuf
*, struct Client
*, struct Client
*, int, const char **);
55 static int scan_umodes(struct MsgBuf
*, struct Client
*, struct Client
*, int, const char **);
56 /*static int scan_cmodes(struct MsgBuf *, struct Client *, struct Client *, int, const char **);*/
58 struct Message scan_msgtab
= {
60 {mg_ignore
, mg_not_oper
, mg_ignore
, mg_ignore
, mg_ignore
, {mo_scan
, 2}}
63 mapi_clist_av1 scan_clist
[] = { &scan_msgtab
, NULL
};
64 DECLARE_MODULE_AV1(scan
, NULL
, NULL
, scan_clist
, NULL
, NULL
, "$Revision: 1853 $");
66 typedef int (*scan_handler
)(struct MsgBuf
*, struct Client
*, struct Client
*, int,
74 {"UMODES", L_OPER
, scan_umodes
},
78 static const char *empty_sockhost
= "255.255.255.255";
79 static const char *spoofed_sockhost
= "0";
83 * parv[1] = options [or target]
87 mo_scan(struct MsgBuf
*msgbuf_p
, struct Client
*client_p
, struct Client
*source_p
, int parc
,
90 struct scan_cmd
*sptr
;
92 for (sptr
= scan_cmds
; sptr
->name
!= NULL
; sptr
++)
94 if (!irccmp(sptr
->name
, parv
[1]))
96 if (sptr
->operlevel
== L_ADMIN
&&
97 !IsOperAdmin(source_p
))
100 return sptr
->handler(msgbuf_p
, client_p
, source_p
, parc
, parv
);
104 sendto_one_notice(source_p
, ":*** %s is not an implemented SCAN target",
111 scan_umodes(struct MsgBuf
*msgbuf_p
, struct Client
*client_p
, struct Client
*source_p
, int parc
,
114 unsigned int allowed_umodes
= 0, disallowed_umodes
= 0;
117 int list_users
= YES
;
119 int list_count
= 0, count
= 0;
120 const char *mask
= NULL
;
122 struct Client
*target_p
;
123 rb_dlink_list
*target_list
= &lclient_list
; /* local clients only by default */
126 const char *sockhost
;
131 if (MyClient(source_p
))
132 sendto_one(source_p
, form_str(ERR_NEEDMOREPARAMS
),
133 me
.name
, source_p
->name
, "SCAN UMODES");
138 if (parv
[2][0] != '+' && parv
[2][0] != '-')
140 sendto_one_notice(source_p
, ":SCAN UMODES: umodes parameter must start with '+' or '-'");
144 for (c
= parv
[2]; *c
; c
++)
155 if ((mode
= user_modes
[(unsigned char) *c
]) != 0)
157 if (what
== MODE_ADD
)
158 allowed_umodes
|= mode
;
160 disallowed_umodes
|= mode
;
165 for (i
= 3; i
< parc
; i
++)
167 if (!irccmp(parv
[i
], "no-list"))
169 else if (!irccmp(parv
[i
], "list"))
171 else if (!irccmp(parv
[i
], "global"))
172 target_list
= &global_client_list
;
173 else if (i
< (parc
- 1))
175 if (!irccmp(parv
[i
], "list-max"))
176 list_max
= atoi(parv
[++i
]);
177 else if (!irccmp(parv
[i
], "mask"))
181 sendto_one_notice(source_p
, ":SCAN UMODES: invalid parameters");
187 sendto_one_notice(source_p
, ":SCAN UMODES: invalid parameters");
191 if (target_list
== &global_client_list
&& list_users
)
193 if (IsOperSpy(source_p
))
195 if (!ConfigFileEntry
.operspy_dont_care_user_info
)
197 rb_strlcpy(buf
, "UMODES", sizeof buf
);
198 for (i
= 2; i
< parc
; i
++)
200 rb_strlcat(buf
, " ", sizeof buf
);
201 rb_strlcat(buf
, parv
[i
], sizeof buf
);
203 report_operspy(source_p
, "SCAN", buf
);
208 sendto_one(source_p
, form_str(ERR_NOPRIVS
),
209 me
.name
, source_p
->name
, "oper_spy");
214 RB_DLINK_FOREACH(tn
, target_list
->head
)
216 unsigned int working_umodes
= 0;
217 char maskbuf
[BUFSIZE
];
221 if (!IsClient(target_p
))
224 if(EmptyString(target_p
->sockhost
))
225 sockhost
= empty_sockhost
;
226 else if(!show_ip(source_p
, target_p
))
227 sockhost
= spoofed_sockhost
;
229 sockhost
= target_p
->sockhost
;
231 working_umodes
= target_p
->umodes
;
233 /* require that we have the allowed umodes... */
234 if ((working_umodes
& allowed_umodes
) != allowed_umodes
)
237 /* require that we have NONE of the disallowed ones */
238 if ((working_umodes
& disallowed_umodes
) != 0)
243 snprintf(maskbuf
, BUFSIZE
, "%s!%s@%s",
244 target_p
->name
, target_p
->username
, target_p
->host
);
246 if (!match(mask
, maskbuf
))
250 if (list_users
&& (!list_max
|| (list_count
< list_max
)))
252 char modebuf
[BUFSIZE
];
257 for (i
= 0; i
< 128; i
++)
259 if (target_p
->umodes
& user_modes
[i
])
267 sendto_one_numeric(source_p
, RPL_SCANUMODES
,
268 form_str(RPL_SCANUMODES
),
269 target_p
->name
, target_p
->username
,
270 target_p
->host
, sockhost
,
271 target_p
->servptr
->name
, modebuf
,
277 sendto_one_numeric(source_p
, RPL_SCANMATCHED
,
278 form_str(RPL_SCANMATCHED
), count
);