trunk/modules/m_capab.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_capab.c: Negotiates capabilities with a remote server.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: m_capab.c,v 1.39 2005/07/30 20:44:14 adx Exp $
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "s_serv.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"

static void mr_capab(struct Client *, struct Client *, int, char **);

struct Message capab_msgtab = {
  "CAPAB", 0, 0, 0, 0, MFLG_SLOW | MFLG_UNREG, 0,
  {mr_capab, m_ignore, m_ignore, m_ignore, m_ignore, m_ignore}
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&capab_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&capab_msgtab);
}

const char *_version = "$Revision: 1.39 $";
#endif

/*
 * mr_capab - CAPAB message handler
 *      parv[0] = sender prefix
 *      parv[1] = space-separated list of capabilities
 *
 */
static void
mr_capab(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  int i;
  int cap;
  char *p;
  char *s;
#ifdef HAVE_LIBCRYPTO
  struct EncCapability *ecap;
  unsigned int cipher = 0;
#endif

  /* ummm, this shouldn't happen. Could argue this should be logged etc. */
  if (client_p->localClient == NULL)
    return;

  if (client_p->localClient->caps && !(IsCapable(client_p, CAP_TS6)))
  {
    exit_client(client_p, client_p, "CAPAB received twice");
    return;
  }
  else
    SetCapable(client_p, CAP_CAP);

  for (i = 1; i < parc; i++)
  {
    for (s = strtoken(&p, parv[i], " "); s; s = strtoken(&p, NULL, " "))
    {
#ifdef HAVE_LIBCRYPTO
      if ((strncmp(s, "ENC:", 4) == 0))
      {
        /* Skip the "ENC:" portion */
        s += 4;

        /* Check the remaining portion against the list of ciphers we
         * have available (CipherTable).
         */
        for (ecap = CipherTable; ecap->name; ecap++)
        {
          if ((irccmp(ecap->name, s) == 0) && (ecap->cap & CAP_ENC_MASK))
          {
            cipher = ecap->cap;
            break;
          }
        }
        /* Since the name and capabilities matched, use it. */
        if (cipher != 0)
        {
          SetCapable(client_p, CAP_ENC);
          client_p->localClient->enc_caps |= cipher;
        }
        else
        {
          /* cipher is still zero; we didn't find a matching entry. */
          exit_client(client_p, client_p,
                      "Cipher selected is not available here.");
          return;
        }
      }
      else /* normal capab */
#endif
        if ((cap = find_capability(s)) != 0)
          SetCapable(client_p, cap);
    }
  }
}
Revision:	30
Committed:	Sun Oct 2 20:03:27 2005 UTC (19 years, 10 months ago) by adx
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_capab.c*
File size:	3420 byte(s)
Log Message:	- imported sources - can be moved later according to the directory/branching scheme, but we need the svn up
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_capab.c: Negotiates capabilities with a remote server.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22			* $Id: m_capab.c,v 1.39 2005/07/30 20:44:14 adx Exp $
23			*/
24
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "irc_string.h"
29			#include "s_serv.h"
30			#include "s_conf.h"
31			#include "msg.h"
32			#include "parse.h"
33			#include "modules.h"
34
35			static void mr_capab(struct Client , struct Client , int, char **);
36
37			struct Message capab_msgtab = {
38			"CAPAB", 0, 0, 0, 0, MFLG_SLOW \| MFLG_UNREG, 0,
39			{mr_capab, m_ignore, m_ignore, m_ignore, m_ignore, m_ignore}
40			};
41
42			#ifndef STATIC_MODULES
43			void
44			_modinit(void)
45			{
46			mod_add_cmd(&capab_msgtab);
47			}
48
49			void
50			_moddeinit(void)
51			{
52			mod_del_cmd(&capab_msgtab);
53			}
54
55			const char *_version = "$Revision: 1.39 $";
56			#endif
57
58			/*
59			* mr_capab - CAPAB message handler
60			* parv[0] = sender prefix
61			* parv[1] = space-separated list of capabilities
62			*
63			*/
64			static void
65			mr_capab(struct Client client_p, struct Client source_p,
66			int parc, char *parv[])
67			{
68			int i;
69			int cap;
70			char *p;
71			char *s;
72			#ifdef HAVE_LIBCRYPTO
73			struct EncCapability *ecap;
74			unsigned int cipher = 0;
75			#endif
76
77			/* ummm, this shouldn't happen. Could argue this should be logged etc. */
78			if (client_p->localClient == NULL)
79			return;
80
81			if (client_p->localClient->caps && !(IsCapable(client_p, CAP_TS6)))
82			{
83			exit_client(client_p, client_p, "CAPAB received twice");
84			return;
85			}
86			else
87			SetCapable(client_p, CAP_CAP);
88
89			for (i = 1; i < parc; i++)
90			{
91			for (s = strtoken(&p, parv[i], " "); s; s = strtoken(&p, NULL, " "))
92			{
93			#ifdef HAVE_LIBCRYPTO
94			if ((strncmp(s, "ENC:", 4) == 0))
95			{
96			/* Skip the "ENC:" portion */
97			s += 4;
98
99			/* Check the remaining portion against the list of ciphers we
100			* have available (CipherTable).
101			*/
102			for (ecap = CipherTable; ecap->name; ecap++)
103			{
104			if ((irccmp(ecap->name, s) == 0) && (ecap->cap & CAP_ENC_MASK))
105			{
106			cipher = ecap->cap;
107			break;
108			}
109			}
110			/* Since the name and capabilities matched, use it. */
111			if (cipher != 0)
112			{
113			SetCapable(client_p, CAP_ENC);
114			client_p->localClient->enc_caps \|= cipher;
115			}
116			else
117			{
118			/* cipher is still zero; we didn't find a matching entry. */
119			exit_client(client_p, client_p,
120			"Cipher selected is not available here.");
121			return;
122			}
123			}
124			else /* normal capab */
125			#endif
126			if ((cap = find_capability(s)) != 0)
127			SetCapable(client_p, cap);
128			}
129			}
130			}