hush/libbb/login.c

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/*
* issue.c: issue printing code
*
* Copyright (C) 2003 Bastian Blank <waldi@tuxbox.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
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* Optimize and correcting OCRNL by Vladimir Oleynik <dzo@simtreas.ru>
*/
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#include <sys/param.h> /* MAXHOSTNAMELEN */
#include <stdio.h>
#include <unistd.h>
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#include "libbb.h"
#include <sys/utsname.h>
#include <time.h>
#define LOGIN " login: "
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static const char fmtstr_d[] = "%A, %d %B %Y";
static const char fmtstr_t[] = "%H:%M:%S";
void print_login_issue(const char *issue_file, const char *tty)
{
FILE *fd;
int c;
char buf[256+2];
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const char *outbuf;
time_t t;
struct utsname uts;
time(&t);
uname(&uts);
puts("\r"); /* start a new line */
if ((fd = fopen(issue_file, "r"))) {
while ((c = fgetc(fd)) != EOF) {
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outbuf = buf;
buf[0] = c;
if(c == '\n') {
buf[1] = '\r';
buf[2] = 0;
} else {
buf[1] = 0;
}
if (c == '\\' || c == '%') {
c = fgetc(fd);
switch (c) {
case 's':
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outbuf = uts.sysname;
break;
case 'n':
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outbuf = uts.nodename;
break;
case 'r':
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outbuf = uts.release;
break;
case 'v':
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outbuf = uts.version;
break;
case 'm':
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outbuf = uts.machine;
break;
case 'D':
case 'o':
buf[0] = '\0';
getdomainname(buf, sizeof(buf) - 1);
break;
case 'd':
strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
break;
case 't':
strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
break;
case 'h':
buf[0] = '\0';
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gethostname(buf, sizeof(buf) - 1);
break;
case 'l':
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outbuf = tty;
break;
default:
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buf[0] = c;
}
}
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fputs(outbuf, stdout);
}
fclose(fd);
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fflush(stdout);
}
}
void print_login_prompt(void)
{
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char buf[MAXHOSTNAMELEN+1];
if(gethostname(buf, MAXHOSTNAMELEN) == 0)
fputs(buf, stdout);
fputs(LOGIN, stdout);
fflush(stdout);
}