trunk/src/server_capab.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2019 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("QS", CAPAB_QS);
  capab_add("EOB", CAPAB_EOB);
  capab_add("CLUSTER", CAPAB_CLUSTER);
  capab_add("SVS", CAPAB_SVS);
  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:	8752
Committed:	Tue Jan 1 11:07:01 2019 UTC (6 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	3480 byte(s)
Log Message:	- Update copyright years
#	User	Rev	Content
1	michael	8170	/*
2			* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3			*
4	michael	8752	* Copyright (c) 1997-2019 ircd-hybrid development team
5	michael	8170	*
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	michael	8172	* \version $Id$
25	michael	8170	*/
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("QS", CAPAB_QS);
48			capab_add("EOB", CAPAB_EOB);
49			capab_add("CLUSTER", CAPAB_CLUSTER);
50			capab_add("SVS", CAPAB_SVS);
51	michael	8214	capab_add("RHOST", CAPAB_RHOST);
52	michael	8170	}
53
54			/* capab_add()
55			*
56			* inputs - string name of CAPAB
57			* - int flag of capability
58			* output - NONE
59			* side effects - Adds given capability name and bit mask to
60			* current supported capabilities. This allows
61			* modules to dynamically add or subtract their capability.
62			*/
63			void
64			capab_add(const char *name, unsigned int flag)
65			{
66			struct Capability cap = xcalloc(sizeof(cap));
67
68			cap->name = xstrdup(name);
69			cap->cap = flag;
70			dlinkAdd(cap, &cap->node, &capab_list);
71			}
72
73			/* capab_del()
74			*
75			* inputs - string name of CAPAB
76			* output - NONE
77			* side effects - delete given capability from ones known.
78			*/
79			void
80			capab_del(const char *name)
81			{
82			dlink_node node, node_next;
83
84			DLINK_FOREACH_SAFE(node, node_next, capab_list.head)
85			{
86			struct Capability *cap = node->data;
87
88	michael	8512	if (irccmp(cap->name, name) == 0)
89	michael	8170	{
90			dlinkDelete(node, &capab_list);
91			xfree(cap->name);
92			xfree(cap);
93			}
94			}
95			}
96
97			/*
98			* capab_find()
99			*
100			* inputs - string name of capab to find
101			* output - 0 if not found CAPAB otherwise
102			* side effects - none
103			*/
104			unsigned int
105			capab_find(const char *name)
106			{
107			dlink_node *node;
108
109			DLINK_FOREACH(node, capab_list.head)
110			{
111			const struct Capability *cap = node->data;
112
113	michael	8512	if (irccmp(cap->name, name) == 0)
114	michael	8170	return cap->cap;
115			}
116
117			return 0;
118			}
119
120			/*
121			* capab_get() - show current server capabilities
122			*
123			* inputs - pointer to a struct Client
124			* output - pointer to static string
125			* side effects - build up string representing capabilities of server listed
126			*/
127			const char *
128			capab_get(const void *ptr)
129			{
130			static char buf[IRCD_BUFSIZE] = "";
131			dlink_node *node;
132
133	michael	8512	buf[0] = '\0'; /* buf is static */
134	michael	8170
135			DLINK_FOREACH(node, capab_list.head)
136			{
137			const struct Capability *cap = node->data;
138
139			if (ptr && !IsCapable(((const struct Client *)ptr), cap->cap))
140			continue;
141
142			strlcat(buf, cap->name, sizeof(buf));
143
144			if (node->next)
145			strlcat(buf, " ", sizeof(buf));
146			}
147
148			return buf;
149			}