4.3BSD - /usr/src/new/pathalias/local.c

   1: /* pathalias -- by steve bellovin, as told to peter honeyman */
   2: #ifndef lint
   3: static char *sccsid = "@(#)local.c	8.1 (down!honey) 86/01/19";
   4: #endif lint
   5: 
   6: #include <stdio.h>
   7: #include "config.h"
   8: 
   9: #ifdef  UNAME
  10: #include <sys/utsname.h>
  11: 
  12: char    *
  13: local()
  14: {
  15:     static struct utsname utsname;
  16: 
  17:     uname(&utsname);
  18:     return(utsname.nodename);
  19: }
  20: 
  21: #else !UNAME
  22: 
  23: char    *
  24: local()
  25: {
  26:     static char lname[64];
  27:     void    gethostname();
  28: 
  29:     gethostname(lname, sizeof(lname));
  30:     return(lname);
  31: }
  32: 
  33: #ifndef GETHOSTNAME
  34: 
  35: static void
  36: gethostname(name, len)
  37: char    *name;
  38: {
  39:     FILE    *whoami, *fopen(), *popen();
  40:     char    *ptr, *index();
  41: 
  42:     *name = '\0';
  43: 
  44:     /* try /etc/whoami */
  45:     if ((whoami = fopen("/etc/whoami", "r")) != 0) {
  46:         (void) fgets(name, len, whoami);
  47:         (void) fclose(whoami);
  48:         if ((ptr = index(name, '\n')) != 0)
  49:             *ptr = '\0';
  50:     }
  51:     if (*name)
  52:         return;
  53: 
  54:     /* try /usr/include/whoami.h */
  55:     if ((whoami = fopen("/usr/include/whoami.h", "r")) != 0) {
  56:         while (!feof(whoami)) {
  57:             char    buf[100];
  58: 
  59:             if (fgets(buf, 100, whoami) == 0)
  60:                 break;
  61:             if (sscanf(buf, "#define sysname \"%[^\"]\"", name))
  62:                 break;
  63:         }
  64:         (void) fclose(whoami);
  65:         if (*name)
  66:             return;
  67:     }
  68: 
  69:     /* ask uucp */
  70:     if ((whoami = popen("uuname -l", "r")) != 0) {
  71:         (void) fgets(name, len, whoami);
  72:         (void) pclose(whoami);
  73:         if ((ptr = index(name, '\n')) != 0)
  74:             *ptr = '\0';
  75:     }
  76:     if (*name)
  77:         return;
  78: 
  79:     /* aw hell, i give up!  is this a real unix? */
  80:     return;
  81: }
  82: #endif GETHOSTNAME
  83: #endif UNAME

Defined functions

Defined variables