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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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unix
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volume22
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pathalias10
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part03
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local.c
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C/C++ Source or Header
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1990-06-07
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2KB
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88 lines
/* pathalias -- by steve bellovin, as told to peter honeyman */
#ifndef lint
static char *sccsid = "@(#)local.c 9.2 88/06/10";
#endif /* lint */
#include <stdio.h>
#include "config.h"
#ifdef UNAME
#include <sys/utsname.h>
char *
local()
{
static struct utsname utsname;
extern int uname();
(void) uname(&utsname);
return(utsname.nodename);
}
#else /* !UNAME */
char *
local()
{
static char lname[64];
extern int gethostname();
(void) gethostname(lname, (int) sizeof(lname));
lname[sizeof(lname)] = 0;
return(lname);
}
#ifndef GETHOSTNAME
STATIC int
gethostname(name, len)
char *name;
int len;
{ FILE *whoami;
char *ptr;
extern int pclose();
extern FILE *fopen(), *popen();
*name = '\0';
/* try /etc/whoami */
if ((whoami = fopen("/etc/whoami", "r")) != 0) {
(void) fgets(name, len, whoami);
(void) fclose(whoami);
if ((ptr = index(name, '\n')) != 0)
*ptr = '\0';
}
if (*name)
return 0;
/* try /usr/include/whoami.h */
if ((whoami = fopen("/usr/include/whoami.h", "r")) != 0) {
while (!feof(whoami)) {
char buf[100];
if (fgets(buf, 100, whoami) == 0)
break;
if (sscanf(buf, "#define sysname \"%[^\"]\"", name))
break;
}
(void) fclose(whoami);
if (*name)
return 0;
}
/* ask uucp */
if ((whoami = popen("uuname -l", "r")) != 0) {
(void) fgets(name, len, whoami);
(void) pclose(whoami);
if ((ptr = index(name, '\n')) != 0)
*ptr = '\0';
}
if (*name)
return 0;
/* aw hell, i give up! is this really unix? */
return -1;
}
#endif /* GETHOSTNAME */
#endif /* UNAME */