8.2.x/modules/m_oper.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2019 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 "client_svstag.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
 * \param conf operator {} configuration record
 */
static void
oper_up(struct Client *source_p, const struct MaskItem *conf)
{
  const unsigned int old = source_p->umodes;

  ++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))
  {
    svstag_attach(&source_p->svstags, RPL_WHOISOPERATOR, "+", conf->whois);
    sendto_server(NULL, 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 void
m_oper(struct Client *source_p, int parc, char *parv[])
{
  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;
  }

  struct MaskItem *conf;
  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 ? "host mismatch" : "no operator {} block");
    return;
  }

  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;
  }

  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;
    }
  }

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

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

/*! \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 void
mo_oper(struct Client *source_p, int parc, char *parv[])
{
  sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
}

static struct Message oper_msgtab =
{
  .cmd = "OPER",
  .args_min = 3,
  .args_max = MAXPARA,
  .flags = MFLG_ENDGRACE,
  .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:	9078
Committed:	Sat Oct 12 20:15:30 2019 UTC (4 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	6937 byte(s)
Log Message:	- Command handlers are now of type void again
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2019 ircd-hybrid development team
5	*
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	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	* USA
20	*/
21
22	/*! \file m_oper.c
23	* \brief Includes required functions for processing the OPER command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "list.h"
29	#include "client.h"
30	#include "client_svstag.h"
31	#include "irc_string.h"
32	#include "ircd.h"
33	#include "numeric.h"
34	#include "conf.h"
35	#include "log.h"
36	#include "user.h"
37	#include "send.h"
38	#include "parse.h"
39	#include "modules.h"
40	#include "packet.h"
41
42
43	/*! \brief Blindly opers up given source_p, using conf info.
44	* All checks on passwords have already been done.
45	* \param source_p Pointer to given client to oper
46	* \param conf operator {} configuration record
47	*/
48	static void
49	oper_up(struct Client source_p, const struct MaskItem conf)
50	{
51	const unsigned int old = source_p->umodes;
52
53	++Count.oper;
54	SetOper(source_p);
55
56	if (conf->modes)
57	AddUMode(source_p, conf->modes);
58	else if (ConfigGeneral.oper_umodes)
59	AddUMode(source_p, ConfigGeneral.oper_umodes);
60
61	if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
62	++Count.invisi;
63	else if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
64	--Count.invisi;
65
66	assert(dlinkFind(&oper_list, source_p) == NULL);
67	dlinkAdd(source_p, make_dlink_node(), &oper_list);
68
69	AddOFlag(source_p, conf->port);
70
71	if (HasOFlag(source_p, OPER_FLAG_ADMIN))
72	AddUMode(source_p, UMODE_ADMIN);
73
74	if (!EmptyString(conf->whois))
75	{
76	svstag_attach(&source_p->svstags, RPL_WHOISOPERATOR, "+", conf->whois);
77	sendto_server(NULL, 0, 0, ":%s SVSTAG %s %ju %u + :%s",
78	me.id, source_p->id, source_p->tsinfo,
79	RPL_WHOISOPERATOR, conf->whois);
80	}
81
82	ilog(LOG_TYPE_OPER, "OPER %s by %s!%s@%s", conf->name, source_p->name,
83	source_p->username, source_p->host);
84	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, "%s is now an operator",
85	get_oper_name(source_p));
86	sendto_server(NULL, 0, 0, ":%s GLOBOPS :%s is now an operator",
87	me.id, get_oper_name(source_p));
88
89	send_umode_out(source_p, old);
90	sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
91	}
92
93	/*! \brief Notices all opers of the failed oper attempt if enabled
94	*
95	* \param source_p Client doing /oper ...
96	* \param name The nick they tried to oper as
97	* \param reason The reason why they have failed
98	*/
99	static void
100	failed_oper_notice(struct Client source_p, const char name,
101	const char *reason)
102	{
103	if (ConfigGeneral.failed_oper_notice)
104	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
105	"Failed OPER attempt as %s by %s (%s@%s) - %s",
106	name, source_p->name, source_p->username,
107	source_p->host, reason);
108
109	ilog(LOG_TYPE_OPER, "Failed OPER attempt as %s by %s (%s@%s) - %s",
110	name, source_p->name, source_p->username,
111	source_p->host, reason);
112	}
113
114	/*! \brief OPER command handler
115	*
116	* \param source_p Pointer to allocated Client struct from which the message
117	* originally comes from. This can be a local or remote client.
118	* \param parc Integer holding the number of supplied arguments.
119	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
120	* pointers.
121	* \note Valid arguments for this command are:
122	* - parv[0] = command
123	* - parv[1] = oper name
124	* - parv[2] = oper password
125	*/
126	static void
127	m_oper(struct Client source_p, int parc, char parv[])
128	{
129	const char *const opername = parv[1];
130	const char *const password = parv[2];
131
132	if (EmptyString(password))
133	{
134	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "OPER");
135	return;
136	}
137
138	struct MaskItem *conf;
139	if ((conf = operator_find(source_p, opername)) == NULL)
140	{
141	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
142
143	conf = operator_find(NULL, opername);
144	failed_oper_notice(source_p, opername, conf ? "host mismatch" : "no operator {} block");
145	return;
146	}
147
148	if (IsConfSSL(conf) && !HasUMode(source_p, UMODE_SSL))
149	{
150	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
151	failed_oper_notice(source_p, opername, "requires SSL/TLS");
152	return;
153	}
154
155	if (!EmptyString(conf->certfp))
156	{
157	if (EmptyString(source_p->certfp) \|\| strcasecmp(source_p->certfp, conf->certfp))
158	{
159	sendto_one_numeric(source_p, &me, ERR_NOOPERHOST);
160	failed_oper_notice(source_p, opername, "client certificate fingerprint mismatch");
161	return;
162	}
163	}
164
165	if (match_conf_password(password, conf) == true)
166	{
167	if (conf_attach(source_p, conf))
168	{
169	sendto_one_notice(source_p, &me, ":Can't attach conf!");
170	failed_oper_notice(source_p, opername, "can't attach conf!");
171	return;
172	}
173
174	oper_up(source_p, conf);
175	}
176	else
177	{
178	sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH);
179	failed_oper_notice(source_p, opername, "password mismatch");
180	}
181	}
182
183	/*! \brief OPER command handler
184	*
185	* \param source_p Pointer to allocated Client struct from which the message
186	* originally comes from. This can be a local or remote client.
187	* \param parc Integer holding the number of supplied arguments.
188	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
189	* pointers.
190	* \note Valid arguments for this command are:
191	* - parv[0] = command
192	* - parv[1] = oper name
193	* - parv[2] = oper password
194	*/
195	static void
196	mo_oper(struct Client source_p, int parc, char parv[])
197	{
198	sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
199	}
200
201	static struct Message oper_msgtab =
202	{
203	.cmd = "OPER",
204	.args_min = 3,
205	.args_max = MAXPARA,
206	.flags = MFLG_ENDGRACE,
207	.handlers[UNREGISTERED_HANDLER] = m_unregistered,
208	.handlers[CLIENT_HANDLER] = m_oper,
209	.handlers[SERVER_HANDLER] = m_ignore,
210	.handlers[ENCAP_HANDLER] = m_ignore,
211	.handlers[OPER_HANDLER] = mo_oper
212	};
213
214	static void
215	module_init(void)
216	{
217	mod_add_cmd(&oper_msgtab);
218	}
219
220	static void
221	module_exit(void)
222	{
223	mod_del_cmd(&oper_msgtab);
224	}
225
226	struct module module_entry =
227	{
228	.version = "$Revision$",
229	.modinit = module_init,
230	.modexit = module_exit,
231	};