modules/core/m_mode.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

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

#include "stdinc.h"
#include "list.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "user.h"
#include "conf.h"
#include "server.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "packet.h"


/* set_user_mode()
 *
 * added 15/10/91 By Darren Reed.
 * parv[0] - command
 * parv[1] - username to change mode for
 * parv[2] - modes to change
 */
static void
set_user_mode(struct Client *source_p, const int parc, char *parv[])
{
  unsigned int mode = 0, setmodes = 0;
  struct Client *target_p = NULL;
  int what = MODE_ADD, badmode = 0;

  if ((target_p = find_person(source_p, parv[1])) == NULL)
  {
    if (MyConnect(source_p))
      sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
    return;
  }

  if (source_p != target_p)
  {
     sendto_one_numeric(source_p, &me, ERR_USERSDONTMATCH);
     return;
  }

  if (parc < 3)
  {
    char buf[IRCD_BUFSIZE] = "";
    char *m = buf;
    *m++ = '+';

    for (unsigned int i = 0; i < 128; ++i)
      if (HasUMode(source_p, user_modes[i]))
        *m++ = (char)i;
    *m = '\0';

    sendto_one_numeric(source_p, &me, RPL_UMODEIS, buf);
    return;
  }

  /* Find modes already set for user */
  setmodes = source_p->umodes;

  /* parse mode change string(s) */
  for (char **p = &parv[2]; p && *p; ++p)
  {
    for (const char *m = *p; *m; ++m)
    {
      switch (*m)
      {
        case '+':
          what = MODE_ADD;
          break;
        case '-':
          what = MODE_DEL;
          break;
        case 'o':
          if (what == MODE_ADD)
          {
            if (!MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER))
            {
              ++Count.oper;
              SetOper(source_p);
            }
          }
          else
          {
            if (!HasUMode(source_p, UMODE_OPER))
              break;

            ClearOper(source_p);
            --Count.oper;

            if (MyConnect(source_p))
            {
              dlink_node *ptr = NULL;

              detach_conf(source_p, CONF_OPER);
              ClrOFlag(source_p);
              DelUMode(source_p, ConfigGeneral.oper_only_umodes);

              if ((ptr = dlinkFindDelete(&oper_list, source_p)))
                free_dlink_node(ptr);
            }
          }

          break;

        case 'S':  /* Only servers may set +S in a burst */
        case 'W':  /* Only servers may set +W in a burst */
        case 'r':  /* Only services may set +r */
        case 'x':  /* Only services may set +x */
          break;

        default:
          if ((mode = user_modes[(unsigned char)*m]))
          {
            if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER) &&
                (ConfigGeneral.oper_only_umodes & mode))
              badmode = 1;
            else
            {
              if (what == MODE_ADD)
                AddUMode(source_p, mode);
              else
                DelUMode(source_p, mode);
            }
          }
          else if (MyConnect(source_p))
            badmode = 1;

          break;
      }
    }
  }

  if (badmode)
    sendto_one_numeric(source_p, &me, ERR_UMODEUNKNOWNFLAG);

  if (MyConnect(source_p) && HasUMode(source_p, UMODE_ADMIN) &&
      !HasOFlag(source_p, OPER_FLAG_ADMIN))
  {
    sendto_one_notice(source_p, &me, ":*** You have no admin flag;");
    DelUMode(source_p, UMODE_ADMIN);
  }

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

  /*
   * Compare new modes with old modes and send string which
   * will cause servers to update correctly.
   */
  send_umode_out(source_p, source_p, setmodes);
}

/*
 * m_mode - MODE command handler
 * parv[0] - command
 * parv[1] - channel
 */
static int
m_mode(struct Client *source_p, int parc, char *parv[])
{
  struct Channel *chptr = NULL;

  if (EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "MODE");
    return 0;
  }

  /* Now, try to find the channel in question */
  if (!IsChanPrefix(*parv[1]))
  {
    /* if here, it has to be a non-channel name */
    set_user_mode(source_p, parc, parv);
    return 0;
  }

  if ((chptr = hash_find_channel(parv[1])) == NULL)
  {
    sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
    return 0;
  }

  /* Now known the channel exists */
  if (parc < 3)
  {
    char modebuf[MODEBUFLEN] = "";
    char parabuf[MODEBUFLEN] = "";

    channel_modes(chptr, source_p, modebuf, parabuf);
    sendto_one_numeric(source_p, &me, RPL_CHANNELMODEIS, chptr->chname, modebuf, parabuf);
    sendto_one_numeric(source_p, &me, RPL_CREATIONTIME, chptr->chname, chptr->channelts);
    return 0;
  }

  /*
   * bounce all modes from people we deop on sjoin
   * servers have always gotten away with murder,
   * including telnet servers *g* - Dianora
   */
  if (IsServer(source_p) || HasFlag(source_p, FLAGS_SERVICE))
    set_channel_mode(source_p, chptr, NULL, parc - 2, parv + 2);
  else
  {
    struct Membership *member = find_channel_link(source_p, chptr);

    /* Finish the flood grace period... */
    if (MyClient(source_p) && !IsFloodDone(source_p))
      if (!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
        flood_endgrace(source_p);

    set_channel_mode(source_p, chptr, member, parc - 2, parv + 2);
  }

  return 0;
}

static struct Message mode_msgtab =
{
  "MODE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_mode, m_mode, m_ignore, m_mode, m_ignore }
};

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

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

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = MODULE_FLAG_CORE
};
Revision:	4545
Committed:	Fri Aug 22 08:46:13 2014 UTC (11 years, 11 months ago) by michael
Content type:	text/x-csrc
File size:	6973 byte(s)
Log Message:	- Implemented pseudo {} blocks (service aliases) - Fixed compile warnings with -Wmissing-field-initializers
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 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			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22	michael	2820	/*! \file m_mode.c
23	michael	3356	* \brief Includes required functions for processing the MODE command.
24	michael	2820	* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "channel.h"
30			#include "channel_mode.h"
31			#include "client.h"
32			#include "hash.h"
33			#include "irc_string.h"
34			#include "ircd.h"
35			#include "numeric.h"
36	michael	3347	#include "user.h"
37	michael	1309	#include "conf.h"
38	michael	3347	#include "server.h"
39	adx	30	#include "send.h"
40			#include "parse.h"
41			#include "modules.h"
42			#include "packet.h"
43
44
45	michael	3313	/* set_user_mode()
46			*
47			* added 15/10/91 By Darren Reed.
48			* parv[0] - command
49			* parv[1] - username to change mode for
50			* parv[2] - modes to change
51			*/
52			static void
53			set_user_mode(struct Client source_p, const int parc, char parv[])
54			{
55	michael	3539	unsigned int mode = 0, setmodes = 0;
56	michael	3314	struct Client *target_p = NULL;
57	michael	3539	int what = MODE_ADD, badmode = 0;
58	michael	3313
59			if ((target_p = find_person(source_p, parv[1])) == NULL)
60			{
61			if (MyConnect(source_p))
62			sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
63			return;
64			}
65
66			if (source_p != target_p)
67			{
68			sendto_one_numeric(source_p, &me, ERR_USERSDONTMATCH);
69			return;
70			}
71
72			if (parc < 3)
73			{
74	michael	3664	char buf[IRCD_BUFSIZE] = "";
75	michael	3314	char *m = buf;
76	michael	3313	*m++ = '+';
77
78	michael	3314	for (unsigned int i = 0; i < 128; ++i)
79	michael	3313	if (HasUMode(source_p, user_modes[i]))
80			*m++ = (char)i;
81			*m = '\0';
82
83			sendto_one_numeric(source_p, &me, RPL_UMODEIS, buf);
84			return;
85			}
86
87	michael	3539	/* Find modes already set for user */
88			setmodes = source_p->umodes;
89	michael	3313
90			/* parse mode change string(s) */
91	michael	3314	for (char *p = &parv[2]; p && p; ++p)
92	michael	3313	{
93	michael	3314	for (const char m = p; *m; ++m)
94	michael	3313	{
95			switch (*m)
96			{
97			case '+':
98			what = MODE_ADD;
99			break;
100			case '-':
101			what = MODE_DEL;
102			break;
103			case 'o':
104			if (what == MODE_ADD)
105			{
106			if (!MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER))
107			{
108			++Count.oper;
109			SetOper(source_p);
110			}
111			}
112			else
113			{
114			if (!HasUMode(source_p, UMODE_OPER))
115			break;
116
117			ClearOper(source_p);
118	michael	3477	--Count.oper;
119	michael	3313
120			if (MyConnect(source_p))
121			{
122			dlink_node *ptr = NULL;
123
124			detach_conf(source_p, CONF_OPER);
125			ClrOFlag(source_p);
126	michael	4340	DelUMode(source_p, ConfigGeneral.oper_only_umodes);
127	michael	3313
128			if ((ptr = dlinkFindDelete(&oper_list, source_p)))
129			free_dlink_node(ptr);
130			}
131			}
132
133			break;
134
135			case 'S': /* Only servers may set +S in a burst */
136			case 'W': /* Only servers may set +W in a burst */
137			case 'r': /* Only services may set +r */
138			case 'x': /* Only services may set +x */
139			break;
140
141			default:
142	michael	3539	if ((mode = user_modes[(unsigned char)*m]))
143	michael	3313	{
144			if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER) &&
145	michael	4340	(ConfigGeneral.oper_only_umodes & mode))
146	michael	3539	badmode = 1;
147	michael	3313	else
148			{
149			if (what == MODE_ADD)
150	michael	3539	AddUMode(source_p, mode);
151	michael	3313	else
152	michael	3539	DelUMode(source_p, mode);
153	michael	3313	}
154			}
155			else if (MyConnect(source_p))
156	michael	3539	badmode = 1;
157	michael	3313
158			break;
159			}
160			}
161			}
162
163	michael	3539	if (badmode)
164	michael	3313	sendto_one_numeric(source_p, &me, ERR_UMODEUNKNOWNFLAG);
165
166			if (MyConnect(source_p) && HasUMode(source_p, UMODE_ADMIN) &&
167			!HasOFlag(source_p, OPER_FLAG_ADMIN))
168			{
169			sendto_one_notice(source_p, &me, ":*** You have no admin flag;");
170			DelUMode(source_p, UMODE_ADMIN);
171			}
172
173	michael	3539	if (!(setmodes & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
174	michael	3313	++Count.invisi;
175	michael	3539	if ((setmodes & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
176	michael	3313	--Count.invisi;
177
178			/*
179	michael	3539	* Compare new modes with old modes and send string which
180	michael	3313	* will cause servers to update correctly.
181			*/
182	michael	3539	send_umode_out(source_p, source_p, setmodes);
183	michael	3313	}
184
185	adx	30	/*
186			* m_mode - MODE command handler
187	michael	3096	* parv[0] - command
188	adx	30	* parv[1] - channel
189			*/
190	michael	2820	static int
191	michael	3156	m_mode(struct Client source_p, int parc, char parv[])
192	adx	30	{
193			struct Channel *chptr = NULL;
194
195	michael	885	if (EmptyString(parv[1]))
196	adx	30	{
197	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "MODE");
198	michael	2820	return 0;
199	adx	30	}
200
201			/* Now, try to find the channel in question */
202			if (!IsChanPrefix(*parv[1]))
203			{
204			/* if here, it has to be a non-channel name */
205	michael	3156	set_user_mode(source_p, parc, parv);
206	michael	2820	return 0;
207	adx	30	}
208
209	michael	885	if ((chptr = hash_find_channel(parv[1])) == NULL)
210	adx	30	{
211	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
212	michael	2820	return 0;
213	db	848	}
214	adx	30
215			/* Now known the channel exists */
216			if (parc < 3)
217			{
218	michael	3667	char modebuf[MODEBUFLEN] = "";
219			char parabuf[MODEBUFLEN] = "";
220
221	adx	30	channel_modes(chptr, source_p, modebuf, parabuf);
222	michael	3109	sendto_one_numeric(source_p, &me, RPL_CHANNELMODEIS, chptr->chname, modebuf, parabuf);
223			sendto_one_numeric(source_p, &me, RPL_CREATIONTIME, chptr->chname, chptr->channelts);
224	michael	2820	return 0;
225	adx	30	}
226	michael	1895
227			/*
228			* bounce all modes from people we deop on sjoin
229	adx	30	* servers have always gotten away with murder,
230			* including telnet servers g - Dianora
231			*/
232	michael	2644	if (IsServer(source_p) \|\| HasFlag(source_p, FLAGS_SERVICE))
233	michael	3150	set_channel_mode(source_p, chptr, NULL, parc - 2, parv + 2);
234	adx	30	else
235			{
236	michael	3695	struct Membership *member = find_channel_link(source_p, chptr);
237	adx	30
238	michael	3695	/* Finish the flood grace period... */
239			if (MyClient(source_p) && !IsFloodDone(source_p))
240			if (!((parc == 3) && (parv[2][0] == 'b') && (parv[2][1] == '\0')))
241			flood_endgrace(source_p);
242	adx	30
243	michael	3695	set_channel_mode(source_p, chptr, member, parc - 2, parv + 2);
244	adx	30	}
245	michael	2820
246			return 0;
247	adx	30	}
248
249	michael	2820	static struct Message mode_msgtab =
250			{
251	michael	4545	"MODE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
252	michael	2820	{ m_unregistered, m_mode, m_mode, m_ignore, m_mode, m_ignore }
253	michael	1230	};
254
255			static void
256			module_init(void)
257			{
258			mod_add_cmd(&mode_msgtab);
259			}
260
261			static void
262			module_exit(void)
263			{
264			mod_del_cmd(&mode_msgtab);
265			}
266
267	michael	2820	struct module module_entry =
268			{
269	michael	1230	.node = { NULL, NULL, NULL },
270			.name = NULL,
271			.version = "$Revision$",
272			.handle = NULL,
273			.modinit = module_init,
274			.modexit = module_exit,
275			.flags = MODULE_FLAG_CORE
276			};