trunk/src/isupport.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2015 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 isupport.c
 * \brief Contains functions pertaining to RPL_ISUPPORT.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "ircd.h"
#include "conf.h"
#include "send.h"
#include "numeric.h"
#include "client.h"
#include "irc_string.h"
#include "memory.h"
#include "isupport.h"
#include "channel_mode.h"
#include "parse.h"


/* Used for building up the isupport string,
 * used with init_isupport, add_isupport, delete_isupport
 */
struct Isupport
{
  dlink_node node;
  char *name;
  char *options;
  int number;
};

static dlink_list isupport_list;
static dlink_list isupport_list_lines;

/*
 * isupport_init()
 *
 * input        - NONE
 * output       - NONE
 * side effects - Must be called before isupport is enabled
 */
void
isupport_init(void)
{
  isupport_add("CALLERID", NULL, -1);
  isupport_add("CASEMAPPING", "rfc1459", -1);
  isupport_add("DEAF", "D", -1);
  isupport_add("KICKLEN", NULL, KICKLEN);
  isupport_add("MODES", NULL, MAXMODEPARAMS);
  isupport_add("PREFIX", "(ohv)@%+", -1);
  isupport_add("STATUSMSG", "@%+", -1);
  isupport_add("EXCEPTS", NULL, -1);
  isupport_add("INVEX", NULL, -1);
}

/*
 * isupport_add()
 *
 * input        - name of supported function
 *              - options if any
 *              - number if any
 * output       - NONE
 * side effects - Each supported item must call this when activated
 */
void
isupport_add(const char *name, const char *options, int n)
{
  dlink_node *node = NULL;
  struct Isupport *support = NULL;

  DLINK_FOREACH(node, isupport_list.head)
  {
    support = node->data;
    if (irccmp(support->name, name) == 0)
    {
      MyFree(support->name);
      MyFree(support->options);
      break;
    }
  }

  if (node == NULL)
  {
    support = MyCalloc(sizeof(*support));
    dlinkAddTail(support, &support->node, &isupport_list);
  }

  support->name = xstrdup(name);
  if (options)
    support->options = xstrdup(options);
  support->number = n;

  isupport_rebuild();
}

/*
 * isupport_delete()
 *
 * input        - name of supported function
 * output       - NONE
 * side effects - Each supported item must call this when deactivated
 */
void
isupport_delete(const char *name)
{
  dlink_node *node = NULL;

  DLINK_FOREACH(node, isupport_list.head)
  {
    struct Isupport *support = node->data;

    if (irccmp(support->name, name) == 0)
    {
      dlinkDelete(node, &isupport_list);
      MyFree(support->name);
      MyFree(support->options);
      MyFree(support);
      break;
    }
  }

  isupport_rebuild();
}

/*
 * issuport_rebuild()
 *
 * input        - NONE
 * output       - NONE
 * side effects - Destroy the isupport MessageFile lines, and rebuild.
 */
void
isupport_rebuild(void)
{
  char isupportbuffer[IRCD_BUFSIZE];
  char *p = isupportbuffer;
  dlink_node *node = NULL, *node_next = NULL;
  int n = 0;
  int tokens = 0;
  size_t len = 0;
  size_t reserve = strlen(me.name) + HOSTLEN + strlen(numeric_form(RPL_ISUPPORT));

  DLINK_FOREACH_SAFE(node, node_next, isupport_list_lines.head)
  {
    dlinkDelete(node, &isupport_list_lines);
    MyFree(node->data);
    free_dlink_node(node);
  }

  DLINK_FOREACH(node, isupport_list.head)
  {
    struct Isupport *support = node->data;

    p += (n = sprintf(p, "%s", support->name));
    len += n;

    if (support->options)
    {
      p += (n = sprintf(p, "=%s", support->options));
      len += n;
    }

    if (support->number > 0)
    {
      p += (n = sprintf(p, "=%d", support->number));
      len += n;
    }

    *p++ = ' ';
    len++;
    *p = '\0';

    if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
    { /* arbritrary for now */
      if (*--p == ' ')
        *p = '\0';

      dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &isupport_list_lines);
      p = isupportbuffer;
      len = 0;
      n = 0;
      tokens = 0;
    }
  }

  if (len)
  {
    if (*--p == ' ')
      *p = '\0';
    dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &isupport_list_lines);
  }
}

/* isupport_show()
 *
 * inputs       - pointer to client
 * output       - NONE
 * side effects - display to client what we support (for them)
 */
void
isupport_show(struct Client *source_p)
{
  const dlink_node *node = NULL;

  DLINK_FOREACH(node, isupport_list_lines.head)
    sendto_one_numeric(source_p, &me, RPL_ISUPPORT, node->data);
}
Revision:	6259
Committed:	Sat Jul 11 12:18:43 2015 UTC (11 years ago) by michael
Content type:	text/x-csrc
File size:	5209 byte(s)
Log Message:	- Set keyword and eol-style properties
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2015 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 isupport.c
23	* \brief Contains functions pertaining to RPL_ISUPPORT.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "list.h"
29	#include "ircd.h"
30	#include "conf.h"
31	#include "send.h"
32	#include "numeric.h"
33	#include "client.h"
34	#include "irc_string.h"
35	#include "memory.h"
36	#include "isupport.h"
37	#include "channel_mode.h"
38	#include "parse.h"
39
40
41	/* Used for building up the isupport string,
42	* used with init_isupport, add_isupport, delete_isupport
43	*/
44	struct Isupport
45	{
46	dlink_node node;
47	char *name;
48	char *options;
49	int number;
50	};
51
52	static dlink_list isupport_list;
53	static dlink_list isupport_list_lines;
54
55	/*
56	* isupport_init()
57	*
58	* input - NONE
59	* output - NONE
60	* side effects - Must be called before isupport is enabled
61	*/
62	void
63	isupport_init(void)
64	{
65	isupport_add("CALLERID", NULL, -1);
66	isupport_add("CASEMAPPING", "rfc1459", -1);
67	isupport_add("DEAF", "D", -1);
68	isupport_add("KICKLEN", NULL, KICKLEN);
69	isupport_add("MODES", NULL, MAXMODEPARAMS);
70	isupport_add("PREFIX", "(ohv)@%+", -1);
71	isupport_add("STATUSMSG", "@%+", -1);
72	isupport_add("EXCEPTS", NULL, -1);
73	isupport_add("INVEX", NULL, -1);
74	}
75
76	/*
77	* isupport_add()
78	*
79	* input - name of supported function
80	* - options if any
81	* - number if any
82	* output - NONE
83	* side effects - Each supported item must call this when activated
84	*/
85	void
86	isupport_add(const char name, const char options, int n)
87	{
88	dlink_node *node = NULL;
89	struct Isupport *support = NULL;
90
91	DLINK_FOREACH(node, isupport_list.head)
92	{
93	support = node->data;
94	if (irccmp(support->name, name) == 0)
95	{
96	MyFree(support->name);
97	MyFree(support->options);
98	break;
99	}
100	}
101
102	if (node == NULL)
103	{
104	support = MyCalloc(sizeof(*support));
105	dlinkAddTail(support, &support->node, &isupport_list);
106	}
107
108	support->name = xstrdup(name);
109	if (options)
110	support->options = xstrdup(options);
111	support->number = n;
112
113	isupport_rebuild();
114	}
115
116	/*
117	* isupport_delete()
118	*
119	* input - name of supported function
120	* output - NONE
121	* side effects - Each supported item must call this when deactivated
122	*/
123	void
124	isupport_delete(const char *name)
125	{
126	dlink_node *node = NULL;
127
128	DLINK_FOREACH(node, isupport_list.head)
129	{
130	struct Isupport *support = node->data;
131
132	if (irccmp(support->name, name) == 0)
133	{
134	dlinkDelete(node, &isupport_list);
135	MyFree(support->name);
136	MyFree(support->options);
137	MyFree(support);
138	break;
139	}
140	}
141
142	isupport_rebuild();
143	}
144
145	/*
146	* issuport_rebuild()
147	*
148	* input - NONE
149	* output - NONE
150	* side effects - Destroy the isupport MessageFile lines, and rebuild.
151	*/
152	void
153	isupport_rebuild(void)
154	{
155	char isupportbuffer[IRCD_BUFSIZE];
156	char *p = isupportbuffer;
157	dlink_node node = NULL, node_next = NULL;
158	int n = 0;
159	int tokens = 0;
160	size_t len = 0;
161	size_t reserve = strlen(me.name) + HOSTLEN + strlen(numeric_form(RPL_ISUPPORT));
162
163	DLINK_FOREACH_SAFE(node, node_next, isupport_list_lines.head)
164	{
165	dlinkDelete(node, &isupport_list_lines);
166	MyFree(node->data);
167	free_dlink_node(node);
168	}
169
170	DLINK_FOREACH(node, isupport_list.head)
171	{
172	struct Isupport *support = node->data;
173
174	p += (n = sprintf(p, "%s", support->name));
175	len += n;
176
177	if (support->options)
178	{
179	p += (n = sprintf(p, "=%s", support->options));
180	len += n;
181	}
182
183	if (support->number > 0)
184	{
185	p += (n = sprintf(p, "=%d", support->number));
186	len += n;
187	}
188
189	*p++ = ' ';
190	len++;
191	*p = '\0';
192
193	if (++tokens == (MAXPARA-2) \|\| len >= (sizeof(isupportbuffer)-reserve))
194	{ /* arbritrary for now */
195	if (*--p == ' ')
196	*p = '\0';
197
198	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &isupport_list_lines);
199	p = isupportbuffer;
200	len = 0;
201	n = 0;
202	tokens = 0;
203	}
204	}
205
206	if (len)
207	{
208	if (*--p == ' ')
209	*p = '\0';
210	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &isupport_list_lines);
211	}
212	}
213
214	/* isupport_show()
215	*
216	* inputs - pointer to client
217	* output - NONE
218	* side effects - display to client what we support (for them)
219	*/
220	void
221	isupport_show(struct Client *source_p)
222	{
223	const dlink_node *node = NULL;
224
225	DLINK_FOREACH(node, isupport_list_lines.head)
226	sendto_one_numeric(source_p, &me, RPL_ISUPPORT, node->data);
227	}