8.2.x/modules/m_oper.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2017 ircd-hybrid 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file m_oper.c
 * \brief Includes required functions for processing the OPER command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "conf.h"
#include "log.h"
#include "user.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"


/*! \brief Blindly opers up given source_p, using conf info.
 *         All checks on passwords have already been done.
 * \param source_p Pointer to given client to oper
 */
static void
oper_up(struct Client *source_p)
{
  const unsigned int old = source_p->umodes;
  const struct MaskItem *const conf = source_p->connection->confs.head->data;

  ++Count.oper;
  SetOper(source_p);

  if (conf->modes)
    AddUMode(source_p, conf->modes);
  else if (ConfigGeneral.oper_umodes)
    AddUMode(source_p, ConfigGeneral.oper_umodes);

  if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
    ++Count.invisi;
  else if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
    --Count.invisi;

  assert(dlinkFind(&oper_list, source_p) == NULL);
  dlinkAdd(source_p, make_dlink_node(), &oper_list);

  AddOFlag(source_p, conf->port);

  if (HasOFlag(source_p, OPER_FLAG_ADMIN))
    AddUMode(source_p, UMODE_ADMIN);

  if (!EmptyString(conf->whois))
  {
    client_attach_svstag(source_p, RPL_WHOISOPERATOR, "+", conf->whois);
    sendto_server(source_p, 0, 0, ":%s SVSTAG %s %ju %u + :%s",
                  me.id, source_p->id, source_p->tsinfo,
                  RPL_WHOISOPERATOR, conf->whois);
  }

  ilog(LOG_TYPE_OPER, "OPER %s by %s!%s@%s", conf->name, source_p->name,
       source_p->username, source_p->host);
  sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, "%s is now an operator",
                       get_oper_name(source_p));
  sendto_server(NULL, 0, 0, ":%s GLOBOPS :%s is now an operator",
                me.id, get_oper_name(source_p));
  send_umode_out(source_p, old);
  sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
}

/*! \brief Notices all opers of the failed oper attempt if enabled
 *
 * \param source_p Client doing /oper ...
 * \param name     The nick they tried to oper as
 * \param reason   The reason why they have failed
 */
static void
failed_oper_notice(struct Client *source_p, const char *name,
                   const char *reason)
{
  if (ConfigGeneral.failed_oper_notice)
    sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
                         "Failed OPER attempt as %s by %s (%s@%s) - %s",
                         name, source_p->name, source_p->username,
                         source_p->host, reason);

  ilog(LOG_TYPE_OPER, "Failed OPER attempt as %s by %s (%s@%s) - %s",
       name, source_p->name, source_p->username,
       source_p->host, reason);
}

/*! \brief OPER command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = oper name
 *      - parv[2] = oper password
 */
static int
m_oper(struct Client *source_p, int parc, char *parv[])
{
  struct MaskItem *conf = NULL;
  const char *const opername = parv[1];
  const char *const password = parv[2];

  if (EmptyString(password))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "OPER");
    return 0;
  }

  /* end the grace period */
  if (!IsFloodDone(source_p))
    flood_endgrace(source_p);

  if ((conf = operator_find(source_p, opername)) == NULL)
  {
    sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
    conf = operator_find(NULL, opername);
    failed_oper_notice(source_p, opername, (conf != NULL) ?
                       "host mismatch" : "no operator {} block");
    return 0;
  }

  if (IsConfSSL(conf) && !HasUMode(source_p, UMODE_SSL))
  {
    sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
    failed_oper_notice(source_p, opername, "requires SSL/TLS");
    return 0;
  }

  if (!EmptyString(conf->certfp))
  {
    if (EmptyString(source_p->certfp) || strcasecmp(source_p->certfp, conf->certfp))
    {
      sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
      failed_oper_notice(source_p, opername, "client certificate fingerprint mismatch");
      return 0;
    }
  }

  if (match_conf_password(password, conf))
  {
    if (attach_conf(source_p, conf))
    {
      sendto_one_notice(source_p, &me, ":Can't attach conf!");
      failed_oper_notice(source_p, opername, "can't attach conf!");
      return 0;
    }

    oper_up(source_p);
  }
  else
  {
    sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH);
    failed_oper_notice(source_p, opername, "password mismatch");
  }

  return 0;
}

/*! \brief OPER command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = oper name
 *      - parv[2] = oper password
 */
static int
mo_oper(struct Client *source_p, int parc, char *parv[])
{
  sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
  return 0;
}

static struct Message oper_msgtab =
{
  .cmd = "OPER",
  .args_min = 3,
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_unregistered,
  .handlers[CLIENT_HANDLER] = m_oper,
  .handlers[SERVER_HANDLER] = m_ignore,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = mo_oper
};

static void
module_init(void)
{
  mod_add_cmd(&oper_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&oper_msgtab);
}

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	7925
Committed:	Sat Dec 31 13:57:24 2016 UTC (7 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	7033 byte(s)
Log Message:	- Update copyright years
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	7925	* Copyright (c) 1997-2017 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18	michael	4564	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_oper.c
23			* \brief Includes required functions for processing the OPER command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "client.h"
30			#include "irc_string.h"
31			#include "ircd.h"
32			#include "numeric.h"
33	michael	1309	#include "conf.h"
34			#include "log.h"
35	michael	3347	#include "user.h"
36	adx	30	#include "send.h"
37			#include "parse.h"
38			#include "modules.h"
39			#include "packet.h"
40
41
42	michael	6693	/*! \brief Blindly opers up given source_p, using conf info.
43			* All checks on passwords have already been done.
44			* \param source_p Pointer to given client to oper
45			*/
46			static void
47			oper_up(struct Client *source_p)
48			{
49			const unsigned int old = source_p->umodes;
50			const struct MaskItem *const conf = source_p->connection->confs.head->data;
51
52			++Count.oper;
53			SetOper(source_p);
54
55			if (conf->modes)
56			AddUMode(source_p, conf->modes);
57			else if (ConfigGeneral.oper_umodes)
58			AddUMode(source_p, ConfigGeneral.oper_umodes);
59
60			if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
61			++Count.invisi;
62	michael	6702	else if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
63	michael	6693	--Count.invisi;
64
65			assert(dlinkFind(&oper_list, source_p) == NULL);
66			dlinkAdd(source_p, make_dlink_node(), &oper_list);
67
68			AddOFlag(source_p, conf->port);
69
70			if (HasOFlag(source_p, OPER_FLAG_ADMIN))
71			AddUMode(source_p, UMODE_ADMIN);
72
73			if (!EmptyString(conf->whois))
74			{
75			client_attach_svstag(source_p, RPL_WHOISOPERATOR, "+", conf->whois);
76	michael	6781	sendto_server(source_p, 0, 0, ":%s SVSTAG %s %ju %u + :%s",
77			me.id, source_p->id, source_p->tsinfo,
78	michael	6693	RPL_WHOISOPERATOR, conf->whois);
79			}
80
81	michael	7897	ilog(LOG_TYPE_OPER, "OPER %s by %s!%s@%s", conf->name, source_p->name,
82			source_p->username, source_p->host);
83	michael	6693	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, "%s is now an operator",
84			get_oper_name(source_p));
85			sendto_server(NULL, 0, 0, ":%s GLOBOPS :%s is now an operator",
86			me.id, get_oper_name(source_p));
87			send_umode_out(source_p, old);
88			sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
89			}
90
91	michael	3336	/*! \brief Notices all opers of the failed oper attempt if enabled
92	michael	1230	*
93	michael	3336	* \param source_p Client doing /oper ...
94			* \param name The nick they tried to oper as
95			* \param reason The reason why they have failed
96	michael	1230	*/
97			static void
98			failed_oper_notice(struct Client source_p, const char name,
99			const char *reason)
100	adx	30	{
101	michael	4341	if (ConfigGeneral.failed_oper_notice)
102	michael	6317	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
103	michael	1618	"Failed OPER attempt as %s by %s (%s@%s) - %s",
104			name, source_p->name, source_p->username,
105			source_p->host, reason);
106	michael	1247
107	michael	1618	ilog(LOG_TYPE_OPER, "Failed OPER attempt as %s by %s (%s@%s) - %s",
108			name, source_p->name, source_p->username,
109			source_p->host, reason);
110	adx	30	}
111
112	michael	3266	/*! \brief OPER command handler
113			*
114			* \param source_p Pointer to allocated Client struct from which the message
115			* originally comes from. This can be a local or remote client.
116			* \param parc Integer holding the number of supplied arguments.
117			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
118			* pointers.
119			* \note Valid arguments for this command are:
120			* - parv[0] = command
121			* - parv[1] = oper name
122			* - parv[2] = oper password
123			*/
124	michael	2820	static int
125	michael	3156	m_oper(struct Client source_p, int parc, char parv[])
126	adx	30	{
127	michael	1632	struct MaskItem *conf = NULL;
128	michael	4831	const char *const opername = parv[1];
129			const char *const password = parv[2];
130	adx	30
131			if (EmptyString(password))
132			{
133	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "OPER");
134	michael	2820	return 0;
135	adx	30	}
136
137			/* end the grace period */
138			if (!IsFloodDone(source_p))
139			flood_endgrace(source_p);
140
141	michael	7402	if ((conf = operator_find(source_p, opername)) == NULL)
142	adx	30	{
143	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
144	michael	7402	conf = operator_find(NULL, opername);
145	michael	4830	failed_oper_notice(source_p, opername, (conf != NULL) ?
146	michael	4285	"host mismatch" : "no operator {} block");
147	michael	2820	return 0;
148	adx	30	}
149
150	michael	2248	if (IsConfSSL(conf) && !HasUMode(source_p, UMODE_SSL))
151			{
152	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
153	michael	4830	failed_oper_notice(source_p, opername, "requires SSL/TLS");
154	michael	2820	return 0;
155	michael	2248	}
156
157	michael	2228	if (!EmptyString(conf->certfp))
158			{
159	michael	2229	if (EmptyString(source_p->certfp) \|\| strcasecmp(source_p->certfp, conf->certfp))
160	michael	2228	{
161	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
162	michael	4830	failed_oper_notice(source_p, opername, "client certificate fingerprint mismatch");
163	michael	2820	return 0;
164	michael	2228	}
165			}
166
167	michael	1632	if (match_conf_password(password, conf))
168	adx	30	{
169	michael	3914	if (attach_conf(source_p, conf))
170	adx	30	{
171	michael	3110	sendto_one_notice(source_p, &me, ":Can't attach conf!");
172	michael	4830	failed_oper_notice(source_p, opername, "can't attach conf!");
173	michael	2820	return 0;
174	adx	30	}
175
176	michael	6693	oper_up(source_p);
177	adx	30	}
178			else
179			{
180	michael	3109	sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH);
181	michael	4830	failed_oper_notice(source_p, opername, "password mismatch");
182	adx	30	}
183	michael	2820
184			return 0;
185	adx	30	}
186
187	michael	3266	/*! \brief OPER command handler
188			*
189			* \param source_p Pointer to allocated Client struct from which the message
190			* originally comes from. This can be a local or remote client.
191			* \param parc Integer holding the number of supplied arguments.
192			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
193			* pointers.
194			* \note Valid arguments for this command are:
195			* - parv[0] = command
196			* - parv[1] = oper name
197			* - parv[2] = oper password
198			*/
199	michael	2820	static int
200	michael	3156	mo_oper(struct Client source_p, int parc, char parv[])
201	adx	30	{
202	michael	3109	sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
203	michael	2820	return 0;
204	adx	30	}
205
206	michael	2820	static struct Message oper_msgtab =
207			{
208	michael	5880	.cmd = "OPER",
209			.args_min = 3,
210			.args_max = MAXPARA,
211			.handlers[UNREGISTERED_HANDLER] = m_unregistered,
212			.handlers[CLIENT_HANDLER] = m_oper,
213			.handlers[SERVER_HANDLER] = m_ignore,
214			.handlers[ENCAP_HANDLER] = m_ignore,
215			.handlers[OPER_HANDLER] = mo_oper
216	michael	1230	};
217
218			static void
219			module_init(void)
220	adx	30	{
221	michael	1230	mod_add_cmd(&oper_msgtab);
222	adx	30	}
223
224			static void
225	michael	1230	module_exit(void)
226	adx	30	{
227	michael	1230	mod_del_cmd(&oper_msgtab);
228	adx	30	}
229	michael	1230
230	michael	2820	struct module module_entry =
231			{
232	michael	1230	.version = "$Revision$",
233			.modinit = module_init,
234			.modexit = module_exit,
235			};