trunk/modules/m_list.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2018 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_list.c
 * \brief Includes required functions for processing the LIST command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "user.h"
#include "memory.h"
#include "isupport.h"


static void
do_list(struct Client *source_p, char *arg)
{
  bool no_masked_channels = true;

  if (source_p->connection->list_task)
  {
    free_list_task(source_p);
    sendto_one_numeric(source_p, &me, RPL_LISTEND);
    return;
  }

  struct ListTask *lt = xcalloc(sizeof(*lt));
  lt->users_max = UINT_MAX;
  lt->created_max = UINT_MAX;
  lt->topicts_max = UINT_MAX;
  source_p->connection->list_task = lt;
  dlinkAdd(source_p, &lt->node, &listing_client_list);

  if (!EmptyString(arg))
  {
    dlink_list *list = NULL;
    char *opt, *save = NULL;
    bool error = false;
    int i = 0;

    for (opt = strtok_r(arg,  ",", &save); opt;
         opt = strtok_r(NULL, ",", &save))
    {
      switch (*opt)
      {
        case '<':
          if ((i = atoi(opt + 1)) > 0)
            lt->users_max = (unsigned int)i - 1;
          else
            error = true;
          break;
        case '>':
          if ((i = atoi(opt + 1)) >= 0)
            lt->users_min = (unsigned int)i + 1;
          else
            error = true;
          break;
        case 'C':
        case 'c':
          switch (*++opt)
          {
            case '<':
              if ((i = atoi(opt + 1)) >= 0)
                lt->created_max = (unsigned int)(CurrentTime - 60 * i);
              else
                error = true;
              break;
            case '>':
              if ((i = atoi(opt + 1)) >= 0)
                lt->created_min = (unsigned int)(CurrentTime - 60 * i);
              else
                error = true;
              break;
            default:
              error = true;
          }

          break;

        case 'T':
        case 't':
          switch (*++opt)
          {
            case '<':
              if ((i = atoi(opt + 1)) >= 0)
                lt->topicts_min = (unsigned int)(CurrentTime - 60 * i);
              else
                error = true;
              break;
            case '>':
              if ((i = atoi(opt + 1)) >= 0)
                lt->topicts_max = (unsigned int)(CurrentTime - 60 * i);
              else
                error = true;
              break;
            case ':':
              if (strlcpy(lt->topic, opt + 1, sizeof(lt->topic)) == 0)
                error = true;
              break;
            default:
              error = true;
          }

          break;

        default:
          if (*opt == '!')
          {
            list = &lt->hide_mask;
            opt++;
          }
          else
            list = &lt->show_mask;

          if (has_wildcards(opt + !!IsChanPrefix(*opt)))
          {
            if (list == &lt->show_mask)
              no_masked_channels = false;
          }
          else if (!IsChanPrefix(*opt))
            error = true;

          if (error == false)
            dlinkAdd(xstrdup(opt), make_dlink_node(), list);
      }
    }

    if (error == true)
    {
      free_list_task(source_p);
      sendto_one_numeric(source_p, &me, ERR_LISTSYNTAX);
      return;
    }
  }

  sendto_one_numeric(source_p, &me, RPL_LISTSTART);
  safe_list_channels(source_p, no_masked_channels && lt->show_mask.head != NULL);
}

/*! \brief LIST 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] = channel name/list options
 */
static int
m_list(struct Client *source_p, int parc, char *parv[])
{
  do_list(source_p, parv[1]);
  return 0;
}

static struct Message list_msgtab =
{
  .cmd = "LIST",
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_unregistered,
  .handlers[CLIENT_HANDLER] = m_list,
  .handlers[SERVER_HANDLER] = m_ignore,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = m_list
};

static void
module_init(void)
{
  mod_add_cmd(&list_msgtab);
  isupport_add("ELIST", "CMNTU", -1);
  isupport_add("SAFELIST", NULL, -1);
}

static void
module_exit(void)
{
  mod_del_cmd(&list_msgtab);
  isupport_delete("ELIST");
  isupport_delete("SAFELIST");
}

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	8673
Committed:	Sat Nov 24 14:33:53 2018 UTC (7 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	5638 byte(s)
Log Message:	- m_list.c: rename 'errors' variable
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2018 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_list.c
23	* \brief Includes required functions for processing the LIST command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "list.h"
29	#include "client.h"
30	#include "hash.h"
31	#include "irc_string.h"
32	#include "ircd.h"
33	#include "numeric.h"
34	#include "send.h"
35	#include "parse.h"
36	#include "modules.h"
37	#include "user.h"
38	#include "memory.h"
39	#include "isupport.h"
40
41
42	static void
43	do_list(struct Client source_p, char arg)
44	{
45	bool no_masked_channels = true;
46
47	if (source_p->connection->list_task)
48	{
49	free_list_task(source_p);
50	sendto_one_numeric(source_p, &me, RPL_LISTEND);
51	return;
52	}
53
54	struct ListTask lt = xcalloc(sizeof(lt));
55	lt->users_max = UINT_MAX;
56	lt->created_max = UINT_MAX;
57	lt->topicts_max = UINT_MAX;
58	source_p->connection->list_task = lt;
59	dlinkAdd(source_p, &lt->node, &listing_client_list);
60
61	if (!EmptyString(arg))
62	{
63	dlink_list *list = NULL;
64	char opt, save = NULL;
65	bool error = false;
66	int i = 0;
67
68	for (opt = strtok_r(arg, ",", &save); opt;
69	opt = strtok_r(NULL, ",", &save))
70	{
71	switch (*opt)
72	{
73	case '<':
74	if ((i = atoi(opt + 1)) > 0)
75	lt->users_max = (unsigned int)i - 1;
76	else
77	error = true;
78	break;
79	case '>':
80	if ((i = atoi(opt + 1)) >= 0)
81	lt->users_min = (unsigned int)i + 1;
82	else
83	error = true;
84	break;
85	case 'C':
86	case 'c':
87	switch (*++opt)
88	{
89	case '<':
90	if ((i = atoi(opt + 1)) >= 0)
91	lt->created_max = (unsigned int)(CurrentTime - 60 * i);
92	else
93	error = true;
94	break;
95	case '>':
96	if ((i = atoi(opt + 1)) >= 0)
97	lt->created_min = (unsigned int)(CurrentTime - 60 * i);
98	else
99	error = true;
100	break;
101	default:
102	error = true;
103	}
104
105	break;
106
107	case 'T':
108	case 't':
109	switch (*++opt)
110	{
111	case '<':
112	if ((i = atoi(opt + 1)) >= 0)
113	lt->topicts_min = (unsigned int)(CurrentTime - 60 * i);
114	else
115	error = true;
116	break;
117	case '>':
118	if ((i = atoi(opt + 1)) >= 0)
119	lt->topicts_max = (unsigned int)(CurrentTime - 60 * i);
120	else
121	error = true;
122	break;
123	case ':':
124	if (strlcpy(lt->topic, opt + 1, sizeof(lt->topic)) == 0)
125	error = true;
126	break;
127	default:
128	error = true;
129	}
130
131	break;
132
133	default:
134	if (*opt == '!')
135	{
136	list = &lt->hide_mask;
137	opt++;
138	}
139	else
140	list = &lt->show_mask;
141
142	if (has_wildcards(opt + !!IsChanPrefix(*opt)))
143	{
144	if (list == &lt->show_mask)
145	no_masked_channels = false;
146	}
147	else if (!IsChanPrefix(*opt))
148	error = true;
149
150	if (error == false)
151	dlinkAdd(xstrdup(opt), make_dlink_node(), list);
152	}
153	}
154
155	if (error == true)
156	{
157	free_list_task(source_p);
158	sendto_one_numeric(source_p, &me, ERR_LISTSYNTAX);
159	return;
160	}
161	}
162
163	sendto_one_numeric(source_p, &me, RPL_LISTSTART);
164	safe_list_channels(source_p, no_masked_channels && lt->show_mask.head != NULL);
165	}
166
167	/*! \brief LIST command handler
168	*
169	* \param source_p Pointer to allocated Client struct from which the message
170	* originally comes from. This can be a local or remote client.
171	* \param parc Integer holding the number of supplied arguments.
172	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
173	* pointers.
174	* \note Valid arguments for this command are:
175	* - parv[0] = command
176	* - parv[1] = channel name/list options
177	*/
178	static int
179	m_list(struct Client source_p, int parc, char parv[])
180	{
181	do_list(source_p, parv[1]);
182	return 0;
183	}
184
185	static struct Message list_msgtab =
186	{
187	.cmd = "LIST",
188	.args_max = MAXPARA,
189	.handlers[UNREGISTERED_HANDLER] = m_unregistered,
190	.handlers[CLIENT_HANDLER] = m_list,
191	.handlers[SERVER_HANDLER] = m_ignore,
192	.handlers[ENCAP_HANDLER] = m_ignore,
193	.handlers[OPER_HANDLER] = m_list
194	};
195
196	static void
197	module_init(void)
198	{
199	mod_add_cmd(&list_msgtab);
200	isupport_add("ELIST", "CMNTU", -1);
201	isupport_add("SAFELIST", NULL, -1);
202	}
203
204	static void
205	module_exit(void)
206	{
207	mod_del_cmd(&list_msgtab);
208	isupport_delete("ELIST");
209	isupport_delete("SAFELIST");
210	}
211
212	struct module module_entry =
213	{
214	.version = "$Revision$",
215	.modinit = module_init,
216	.modexit = module_exit,
217	};