rxvt-unicode/src/netdisp.C

/*----------------------------------------------------------------------*
 * File:        netdisp.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 1996      Chuck Blake <cblake@BBN.COM>
 *                              - original version
 * Copyright (c) 1997      mj olesen <olesen@me.queensu.ca>
 * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/
/*----------------------------------------------------------------------*
 * support for resolving the actual IP number of the host for remote
 * DISPLAYs.  When the display is local (i.e. :0), we add support for
 * sending the first non-loopback interface IP number as the DISPLAY
 * instead of just sending the incorrect ":0".  This way telnet/rlogin
 * shells can actually get the correct information into DISPLAY for
 * xclients.
 *----------------------------------------------------------------------*/

#include "../config.h"          /* NECESSARY */
#include "rxvt.h"               /* NECESSARY */

#ifdef DISPLAY_IS_IP
#include "netdisp.h"

/*----------------------------------------------------------------------*/
/* return NULL a pointer to buffer which may be freed */
char           *
rxvt_network_display (const char *display)
{
  char            buffer[1024], *rval = NULL;
  struct ifconf   ifc;
  struct ifreq   *ifr;
  int             i, skfd;

  if (display[0] != ':' && strncmp (display, "unix:", 5))
    return (char *) display;            /* nothing to do */

  ifc.ifc_len = sizeof (buffer);        /* Get names of all ifaces */
  ifc.ifc_buf = buffer;

  if ((skfd = socket (AF_INET, SOCK_DGRAM, 0)) < 0)
    {
      perror ("socket");
      return NULL;
    }

  if (ioctl (skfd, SIOCGIFCONF, &ifc) < 0)
    {
      perror ("SIOCGIFCONF");
      close (skfd);
      return NULL;
    }

  for (i = 0, ifr = ifc.ifc_req;
       i < (ifc.ifc_len / sizeof (struct ifreq));
       i++, ifr++)
    {
      struct ifreq ifr2;

      strcpy (ifr2.ifr_name, ifr->ifr_name);

      if (ioctl (skfd, SIOCGIFADDR, &ifr2) >= 0)
        {
          unsigned long addr;
          struct sockaddr_in *p_addr;

          p_addr = (struct sockaddr_in *) &ifr2.ifr_addr;
          addr = htonl ((unsigned long)p_addr->sin_addr.s_addr);

          /*
           * not "0.0.0.0" or "127.0.0.1" - so format the address
           */
          if (addr && addr != 0x7F000001)
            {
              char *colon = strchr (display, ':');

              if (colon == NULL)
                colon = ":0.0";

              rval = rxvt_malloc (strlen (colon) + 16);
              sprintf (rval, "%d.%d.%d.%d%s",
                      (int) ((addr >> 030) & 0xFF),
                      (int) ((addr >> 020) & 0xFF),
                      (int) ((addr >> 010) & 0xFF),
                      (int) (addr & 0xFF), colon);
              break;
            }
        }
    }

  close (skfd);

  return rval;
}
#endif                          /* DISPLAY_IS_IP */
/*----------------------- end-of-file (C source) -----------------------*/
Revision:	1.11
Committed:	Fri Sep 14 17:10:34 2007 UTC (19 years ago) by ayin
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.10:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	Move rxvt_network_display to init.C and remove netdisp.{C,h}.
#	User	Rev	Content
1	root	1.10	/----------------------------------------------------------------------
2	pcg	1.7	* File: netdisp.C
3	pcg	1.1	----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6			* Copyright (c) 1996 Chuck Blake <cblake@BBN.COM>
7			* - original version
8			* Copyright (c) 1997 mj olesen <olesen@me.queensu.ca>
9			* Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
10			*
11			* This program is free software; you can redistribute it and/or modify
12			* it under the terms of the GNU General Public License as published by
13			* the Free Software Foundation; either version 2 of the License, or
14			* (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU General Public License
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24			----------------------------------------------------------------------/
25			/----------------------------------------------------------------------
26			* support for resolving the actual IP number of the host for remote
27			* DISPLAYs. When the display is local (i.e. :0), we add support for
28			* sending the first non-loopback interface IP number as the DISPLAY
29			* instead of just sending the incorrect ":0". This way telnet/rlogin
30			* shells can actually get the correct information into DISPLAY for
31			* xclients.
32			----------------------------------------------------------------------/
33
34			#include "../config.h" /* NECESSARY */
35			#include "rxvt.h" /* NECESSARY */
36
37			#ifdef DISPLAY_IS_IP
38			#include "netdisp.h"
39
40			/----------------------------------------------------------------------/
41			/* return NULL a pointer to buffer which may be freed */
42			char *
43	pcg	1.6	rxvt_network_display (const char *display)
44	pcg	1.1	{
45	pcg	1.5	char buffer[1024], *rval = NULL;
46			struct ifconf ifc;
47			struct ifreq *ifr;
48			int i, skfd;
49
50	root	1.8	if (display[0] != ':' && strncmp (display, "unix:", 5))
51	pcg	1.5	return (char ) display; / nothing to do */
52
53	pcg	1.6	ifc.ifc_len = sizeof (buffer); /* Get names of all ifaces */
54	pcg	1.5	ifc.ifc_buf = buffer;
55
56	pcg	1.6	if ((skfd = socket (AF_INET, SOCK_DGRAM, 0)) < 0)
57	pcg	1.5	{
58	pcg	1.6	perror ("socket");
59	pcg	1.5	return NULL;
60	pcg	1.1	}
61	root	1.9
62	pcg	1.6	if (ioctl (skfd, SIOCGIFCONF, &ifc) < 0)
63	pcg	1.5	{
64	pcg	1.6	perror ("SIOCGIFCONF");
65			close (skfd);
66	pcg	1.5	return NULL;
67	pcg	1.1	}
68	root	1.9
69	pcg	1.5	for (i = 0, ifr = ifc.ifc_req;
70	pcg	1.6	i < (ifc.ifc_len / sizeof (struct ifreq));
71	pcg	1.5	i++, ifr++)
72			{
73	root	1.9	struct ifreq ifr2;
74	pcg	1.5
75	root	1.8	strcpy (ifr2.ifr_name, ifr->ifr_name);
76	root	1.9
77	pcg	1.6	if (ioctl (skfd, SIOCGIFADDR, &ifr2) >= 0)
78	pcg	1.5	{
79	root	1.9	unsigned long addr;
80	pcg	1.5	struct sockaddr_in *p_addr;
81
82	root	1.9	p_addr = (struct sockaddr_in *) &ifr2.ifr_addr;
83	pcg	1.6	addr = htonl ((unsigned long)p_addr->sin_addr.s_addr);
84	pcg	1.5
85			/*
86			* not "0.0.0.0" or "127.0.0.1" - so format the address
87			*/
88			if (addr && addr != 0x7F000001)
89			{
90	root	1.9	char *colon = strchr (display, ':');
91	pcg	1.5
92			if (colon == NULL)
93			colon = ":0.0";
94
95	root	1.8	rval = rxvt_malloc (strlen (colon) + 16);
96	pcg	1.6	sprintf (rval, "%d.%d.%d.%d%s",
97			(int) ((addr >> 030) & 0xFF),
98			(int) ((addr >> 020) & 0xFF),
99			(int) ((addr >> 010) & 0xFF),
100			(int) (addr & 0xFF), colon);
101	pcg	1.5	break;
102			}
103			}
104	pcg	1.1	}
105
106	pcg	1.6	close (skfd);
107	root	1.9
108	pcg	1.5	return rval;
109	pcg	1.1	}
110			#endif /* DISPLAY_IS_IP */
111			/----------------------- end-of-file (C source) -----------------------/