shadow/libmisc/ttytype.c

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/*
* Copyright (c) 1989 - 1994, Julianne Frances Haugh
* Copyright (c) 1996 - 1997, Marek Michałkiewicz
* Copyright (c) 2003 - 2005, Tomasz Kłoczko
2008-05-26 05:34:30 +05:30
* Copyright (c) 2008 , Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the copyright holders or contributors may not be used to
* endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#ident "$Id$"
#include <stdio.h>
#include "prototypes.h"
#include "defines.h"
#include "getdef.h"
/*
* ttytype - set ttytype from port to terminal type mapping database
*/
void ttytype (const char *line)
{
FILE *fp;
char buf[BUFSIZ];
char *typefile;
char *cp;
char type[BUFSIZ];
char port[BUFSIZ];
if (getenv ("TERM"))
return;
if ((typefile = getdef_str ("TTYTYPE_FILE")) == NULL)
return;
if (access (typefile, F_OK) != 0)
return;
fp = fopen (typefile, "r");
if (NULL == fp) {
perror (typefile);
return;
}
while (fgets (buf, sizeof buf, fp) == buf) {
if (buf[0] == '#') {
continue;
}
cp = strchr (buf, '\n');
if (NULL != cp) {
*cp = '\0';
}
if ((sscanf (buf, "%s %s", type, port) == 2) &&
(strcmp (line, port) == 0)) {
break;
}
}
if ((feof (fp) == 0) && (ferror (fp) == 0)) {
addenv ("TERM", type);
}
(void) fclose (fp);
}