trunk/src/server_capab.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2020 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 server_capab.c
 * \brief Server CAPAB related functions.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "irc_string.h"
#include "ircd_defs.h"
#include "server_capab.h"
#include "memory.h"


static dlink_list capab_list;  /* List of capabilities supported by this server */


/* capab_init()
 *
 * inputs       - none
 * output       - none
 */
void
capab_init(void)
{
  capab_add("EOB", CAPAB_EOB);
  capab_add("CLUSTER", CAPAB_CLUSTER);
  capab_add("RHOST", CAPAB_RHOST);
}

/* capab_add()
 *
 * inputs       - string name of CAPAB
 *              - int flag of capability
 * output       - NONE
 * side effects - Adds given capability name and bit mask to
 *                current supported capabilities. This allows
 *                modules to dynamically add or subtract their capability.
 */
void
capab_add(const char *name, unsigned int flag)
{
  struct Capability *cap = xcalloc(sizeof(*cap));

  cap->name = xstrdup(name);
  cap->cap = flag;
  dlinkAdd(cap, &cap->node, &capab_list);
}

/* capab_del()
 *
 * inputs       - string name of CAPAB
 * output       - NONE
 * side effects - delete given capability from ones known.
 */
void
capab_del(const char *name)
{
  dlink_node *node, *node_next;

  DLINK_FOREACH_SAFE(node, node_next, capab_list.head)
  {
    struct Capability *cap = node->data;

    if (irccmp(cap->name, name) == 0)
    {
      dlinkDelete(node, &capab_list);
      xfree(cap->name);
      xfree(cap);
    }
  }
}

/*
 * capab_find()
 *
 * inputs       - string name of capab to find
 * output       - 0 if not found CAPAB otherwise
 * side effects - none
 */
unsigned int
capab_find(const char *name)
{
  dlink_node *node;

  DLINK_FOREACH(node, capab_list.head)
  {
    const struct Capability *cap = node->data;

    if (irccmp(cap->name, name) == 0)
      return cap->cap;
  }

  return 0;
}

/*
 * capab_get() - show current server capabilities
 *
 * inputs       - pointer to a struct Client
 * output       - pointer to static string
 * side effects - build up string representing capabilities of server listed
 */
const char *
capab_get(const void *ptr)
{
  static char buf[IRCD_BUFSIZE] = "";
  dlink_node *node;

  buf[0] = '\0';  /* buf is static */

  DLINK_FOREACH(node, capab_list.head)
  {
    const struct Capability *cap = node->data;

    if (ptr && !IsCapable(((const struct Client *)ptr), cap->cap))
      continue;

    strlcat(buf, cap->name, sizeof(buf));

    if (node->next)
      strlcat(buf, " ", sizeof(buf));
  }

  return buf;
}
Revision:	9625
Committed:	Fri Sep 11 14:37:37 2020 UTC (4 years, 11 months ago) by michael
Content type:	text/x-csrc
File size:	3420 byte(s)
Log Message:	- Remove CAPAB_QS. Quit Storm removal is default behavior for more than 20 years now.
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2020 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 server_capab.c
23	* \brief Server CAPAB related functions.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "list.h"
29	#include "client.h"
30	#include "irc_string.h"
31	#include "ircd_defs.h"
32	#include "server_capab.h"
33	#include "memory.h"
34
35
36	static dlink_list capab_list; /* List of capabilities supported by this server */
37
38
39	/* capab_init()
40	*
41	* inputs - none
42	* output - none
43	*/
44	void
45	capab_init(void)
46	{
47	capab_add("EOB", CAPAB_EOB);
48	capab_add("CLUSTER", CAPAB_CLUSTER);
49	capab_add("RHOST", CAPAB_RHOST);
50	}
51
52	/* capab_add()
53	*
54	* inputs - string name of CAPAB
55	* - int flag of capability
56	* output - NONE
57	* side effects - Adds given capability name and bit mask to
58	* current supported capabilities. This allows
59	* modules to dynamically add or subtract their capability.
60	*/
61	void
62	capab_add(const char *name, unsigned int flag)
63	{
64	struct Capability cap = xcalloc(sizeof(cap));
65
66	cap->name = xstrdup(name);
67	cap->cap = flag;
68	dlinkAdd(cap, &cap->node, &capab_list);
69	}
70
71	/* capab_del()
72	*
73	* inputs - string name of CAPAB
74	* output - NONE
75	* side effects - delete given capability from ones known.
76	*/
77	void
78	capab_del(const char *name)
79	{
80	dlink_node node, node_next;
81
82	DLINK_FOREACH_SAFE(node, node_next, capab_list.head)
83	{
84	struct Capability *cap = node->data;
85
86	if (irccmp(cap->name, name) == 0)
87	{
88	dlinkDelete(node, &capab_list);
89	xfree(cap->name);
90	xfree(cap);
91	}
92	}
93	}
94
95	/*
96	* capab_find()
97	*
98	* inputs - string name of capab to find
99	* output - 0 if not found CAPAB otherwise
100	* side effects - none
101	*/
102	unsigned int
103	capab_find(const char *name)
104	{
105	dlink_node *node;
106
107	DLINK_FOREACH(node, capab_list.head)
108	{
109	const struct Capability *cap = node->data;
110
111	if (irccmp(cap->name, name) == 0)
112	return cap->cap;
113	}
114
115	return 0;
116	}
117
118	/*
119	* capab_get() - show current server capabilities
120	*
121	* inputs - pointer to a struct Client
122	* output - pointer to static string
123	* side effects - build up string representing capabilities of server listed
124	*/
125	const char *
126	capab_get(const void *ptr)
127	{
128	static char buf[IRCD_BUFSIZE] = "";
129	dlink_node *node;
130
131	buf[0] = '\0'; /* buf is static */
132
133	DLINK_FOREACH(node, capab_list.head)
134	{
135	const struct Capability *cap = node->data;
136
137	if (ptr && !IsCapable(((const struct Client *)ptr), cap->cap))
138	continue;
139
140	strlcat(buf, cap->name, sizeof(buf));
141
142	if (node->next)
143	strlcat(buf, " ", sizeof(buf));
144	}
145
146	return buf;
147	}