libbb/login.c

   1 /*
   2  * issue.c: issue printing code
   3  *
   4  * Copyright (C) 2003 Bastian Blank <waldi@tuxbox.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  *
  20  * $Id: login.c,v 1.3 2003/05/13 13:28:25 bug1 Exp $
  21  */
  22
  23 #include <stdio.h>
  24 #include <unistd.h>
  25 #include "busybox.h"
  26
  27 #include <sys/utsname.h>
  28 #include <time.h>
  29
  30 #define LOGIN " login: "
  31
  32 static char fmtstr_d[] = { "%A, %d %B %Y" };
  33 static char fmtstr_t[] = { "%H:%M:%S" };
  34
  35 void print_login_issue(const char *issue_file, const char *tty)
  36 {
  37         FILE *fd;
  38         int c;
  39         char buf[256];
  40         time_t t;
  41         struct utsname uts;
  42
  43         time(&t);
  44         uname(&uts);
  45
  46         puts("");       /* start a new line */
  47
  48         if ((fd = fopen(issue_file, "r"))) {
  49                 while ((c = fgetc(fd)) != EOF) {
  50                         if (c == '\\' || c == '%') {
  51                                 c = fgetc(fd);
  52
  53                                 switch (c) {
  54                                         case 's':
  55                                                 fputs(uts.sysname, stdout);
  56                                                 break;
  57
  58                                         case 'n':
  59                                                 fputs(uts.nodename, stdout);
  60                                                 break;
  61
  62                                         case 'r':
  63                                                 fputs(uts.release, stdout);
  64                                                 break;
  65
  66                                         case 'v':
  67                                                 fputs(uts.version, stdout);
  68                                                 break;
  69
  70                                         case 'm':
  71                                                 fputs(uts.machine, stdout);
  72                                                 break;
  73
  74                                         case 'D':
  75                                         case 'o':
  76                                                 getdomainname(buf, sizeof(buf));
  77                                                 buf[sizeof(buf) - 1] = '\0';
  78                                                 fputs(buf, stdout);
  79                                                 break;
  80
  81                                         case 'd':
  82                                                 strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
  83                                                 fputs(buf, stdout);
  84                                                 break;
  85
  86                                         case 't':
  87                                                 strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
  88                                                 fputs(buf, stdout);
  89                                                 break;
  90
  91                                         case 'h':
  92                                                 gethostname(buf, sizeof(buf));
  93                                                 fputs(buf, stdout);
  94                                                 break;
  95
  96                                         case 'l':
  97                                                 printf("%s", tty);
  98                                                 break;
  99
 100                                         default:
 101                                                 putchar(c);
 102                                 }
 103                         } else
 104                                 putchar(c);
 105                 }
 106
 107                 puts("");       /* start a new line */
 108                 fflush(stdout);
 109
 110                 fclose(fd);
 111         }
 112 }
 113
 114 void print_login_prompt(void)
 115 {
 116         char buf[MAXHOSTNAMELEN];
 117
 118         gethostname(buf, MAXHOSTNAMELEN);
 119         fputs(buf, stdout);
 120
 121         fputs(LOGIN, stdout);
 122         fflush(stdout);
 123 }
 124