modules/core/m_bmask.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2016 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_bmask.c
 * \brief Includes required functions for processing the BMASK 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 "conf.h"
#include "send.h"
#include "parse.h"
#include "modules.h"


/*! \brief BMASK 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] = timestamp
 *      - parv[2] = channel name
 *      - parv[3] = type of ban to add ('b' 'I' or 'e')
 *      - parv[4] = space delimited list of masks to add
 */
static int
ms_bmask(struct Client *source_p, int parc, char *parv[])
{
  char modebuf[IRCD_BUFSIZE] = "";
  char parabuf[IRCD_BUFSIZE] = "";
  char banbuf[IRCD_BUFSIZE] = "";
  struct Channel *chptr = NULL;
  char *s, *t, *mbuf, *pbuf;
  unsigned int mode_type = 0;
  int mlen = 0, tlen = 0;
  int modecount = 0;

  if ((chptr = hash_find_channel(parv[2])) == NULL)
    return 0;

  /* TS is higher, drop it. */
  if (strtoumax(parv[1], NULL, 10) > chptr->creationtime)
    return 0;

  switch (*parv[3])
  {
    case 'b':
      mode_type = CHFL_BAN;
      break;
    case 'e':
      mode_type = CHFL_EXCEPTION;
      break;
    case 'I':
      mode_type = CHFL_INVEX;
      break;
    default:
      return 0;
  }

  strlcpy(banbuf, parv[4], sizeof(banbuf));
  s = banbuf;

  mlen = snprintf(modebuf, sizeof(modebuf), ":%s MODE %s +",
                  (IsHidden(source_p) || ConfigServerHide.hide_servers) ? me.name : source_p->name,
                  chptr->name);
  mbuf = modebuf + mlen;
  pbuf = parabuf;

  do
  {
    if ((t = strchr(s, ' ')))
      *t++ = '\0';
    tlen = strlen(s);

    /* I don't even want to begin parsing this.. */
    if (tlen > MODEBUFLEN)
      break;

    if (tlen && *s != ':' && add_id(source_p, chptr, s, mode_type))
    {
      /* add_id can modify 's' */
      tlen = strlen(s);

      /* this new one wont fit.. */
      if (mbuf - modebuf + 2 + pbuf - parabuf + tlen > IRCD_BUFSIZE - 2 ||
          modecount >= MAXMODEPARAMS)
      {
        *mbuf = *(pbuf - 1) = '\0';

        sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", modebuf, parabuf);
        mbuf = modebuf + mlen;
        pbuf = parabuf;
        modecount = 0;
      }

      *mbuf++ = *parv[3];
      pbuf += sprintf(pbuf, "%s ", s);
      ++modecount;
    }

    s = t;
  } while (s);

  if (modecount)
  {
    *mbuf = *(pbuf - 1) = '\0';
    sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", modebuf, parabuf);
  }

  sendto_server(source_p, 0, 0, ":%s BMASK %ju %s %s :%s",
                source_p->id, chptr->creationtime, chptr->name,
                parv[3], parv[4]);
  return 0;
}

static struct Message bmask_msgtab =
{
  .cmd = "BMASK",
  .args_min = 5,
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_ignore,
  .handlers[CLIENT_HANDLER] = m_ignore,
  .handlers[SERVER_HANDLER] = ms_bmask,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = m_ignore
};

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

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

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = MODULE_FLAG_CORE
};
Revision:	7330
Committed:	Fri Feb 19 17:50:13 2016 UTC (10 years, 5 months ago) by michael
Content type:	text/x-csrc
File size:	4539 byte(s)
Log Message:	- Now that we got time_t to work nicely on openbsd with snprintf's conversion specifiers, we ran into a similiar issue on Raspbian/ARMv7's time_t which is of signed 32 bit and doesn't cope at all with %j. Instead of doing tricks, get rid of time_t everywhere and forever and use uintmax_t instead which has at least a 'standardized' conversion specifier associated with it.
#	User	Rev	Content
1	michael	3356	/*
2			* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3			*
4	michael	7006	* Copyright (c) 1997-2016 ircd-hybrid development team
5	michael	3356	*
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	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	michael	3356	* USA
20			*/
21
22			/*! \file m_bmask.c
23			* \brief Includes required functions for processing the BMASK command.
24	michael	3357	* \version $Id$
25	michael	3356	*/
26
27			#include "stdinc.h"
28			#include "list.h"
29			#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 "conf.h"
36			#include "send.h"
37			#include "parse.h"
38			#include "modules.h"
39
40
41	michael	3777	/*! \brief BMASK command handler
42	michael	3356	*
43	michael	3777	* \param source_p Pointer to allocated Client struct from which the message
44			* originally comes from. This can be a local or remote client.
45			* \param parc Integer holding the number of supplied arguments.
46			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
47			* pointers.
48			* \note Valid arguments for this command are:
49			* - parv[0] = command
50			* - parv[1] = timestamp
51			* - parv[2] = channel name
52			* - parv[3] = type of ban to add ('b' 'I' or 'e')
53			* - parv[4] = space delimited list of masks to add
54	michael	3356	*/
55			static int
56			ms_bmask(struct Client source_p, int parc, char parv[])
57			{
58	michael	3537	char modebuf[IRCD_BUFSIZE] = "";
59			char parabuf[IRCD_BUFSIZE] = "";
60			char banbuf[IRCD_BUFSIZE] = "";
61			struct Channel *chptr = NULL;
62	michael	3356	char s, t, mbuf, pbuf;
63			unsigned int mode_type = 0;
64	michael	3537	int mlen = 0, tlen = 0;
65	michael	3356	int modecount = 0;
66
67			if ((chptr = hash_find_channel(parv[2])) == NULL)
68			return 0;
69
70			/* TS is higher, drop it. */
71	michael	7330	if (strtoumax(parv[1], NULL, 10) > chptr->creationtime)
72	michael	3356	return 0;
73
74			switch (*parv[3])
75			{
76			case 'b':
77			mode_type = CHFL_BAN;
78			break;
79			case 'e':
80			mode_type = CHFL_EXCEPTION;
81			break;
82			case 'I':
83			mode_type = CHFL_INVEX;
84			break;
85			default:
86			return 0;
87			}
88
89	michael	3537	strlcpy(banbuf, parv[4], sizeof(banbuf));
90	michael	3356	s = banbuf;
91
92			mlen = snprintf(modebuf, sizeof(modebuf), ":%s MODE %s +",
93			(IsHidden(source_p) \|\| ConfigServerHide.hide_servers) ? me.name : source_p->name,
94	michael	4618	chptr->name);
95	michael	3356	mbuf = modebuf + mlen;
96			pbuf = parabuf;
97
98			do
99			{
100			if ((t = strchr(s, ' ')))
101			*t++ = '\0';
102			tlen = strlen(s);
103
104			/* I don't even want to begin parsing this.. */
105			if (tlen > MODEBUFLEN)
106			break;
107
108			if (tlen && *s != ':' && add_id(source_p, chptr, s, mode_type))
109			{
110	michael	5756	/* add_id can modify 's' */
111			tlen = strlen(s);
112
113	michael	3356	/* this new one wont fit.. */
114			if (mbuf - modebuf + 2 + pbuf - parabuf + tlen > IRCD_BUFSIZE - 2 \|\|
115			modecount >= MAXMODEPARAMS)
116			{
117	michael	3537	mbuf = (pbuf - 1) = '\0';
118	michael	3356
119	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", modebuf, parabuf);
120	michael	3356	mbuf = modebuf + mlen;
121			pbuf = parabuf;
122			modecount = 0;
123			}
124
125	michael	3537	mbuf++ = parv[3];
126	michael	3356	pbuf += sprintf(pbuf, "%s ", s);
127	michael	3537	++modecount;
128	michael	3356	}
129
130			s = t;
131			} while (s);
132
133			if (modecount)
134			{
135			mbuf = (pbuf - 1) = '\0';
136	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, "%s %s", modebuf, parabuf);
137	michael	3356	}
138
139	michael	6782	sendto_server(source_p, 0, 0, ":%s BMASK %ju %s %s :%s",
140			source_p->id, chptr->creationtime, chptr->name,
141	michael	3356	parv[3], parv[4]);
142			return 0;
143			}
144
145			static struct Message bmask_msgtab =
146			{
147	michael	5881	.cmd = "BMASK",
148			.args_min = 5,
149			.args_max = MAXPARA,
150			.handlers[UNREGISTERED_HANDLER] = m_ignore,
151			.handlers[CLIENT_HANDLER] = m_ignore,
152			.handlers[SERVER_HANDLER] = ms_bmask,
153			.handlers[ENCAP_HANDLER] = m_ignore,
154			.handlers[OPER_HANDLER] = m_ignore
155	michael	3356	};
156
157			static void
158			module_init(void)
159			{
160			mod_add_cmd(&bmask_msgtab);
161			}
162
163			static void
164			module_exit(void)
165			{
166			mod_del_cmd(&bmask_msgtab);
167			}
168
169			struct module module_entry =
170			{
171	michael	3357	.version = "$Revision$",
172	michael	3356	.modinit = module_init,
173			.modexit = module_exit,
174			.flags = MODULE_FLAG_CORE
175			};