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/*
* ProFTPD - FTP server daemon
* Copyright (c) 1997, 1998 Public Flood Software
* Copyright (c) 2001-2011 The ProFTPD Project team
*
* 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., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu
* and other respective copyright holders give permission to link this program
* with OpenSSL, and distribute the resulting executable, without including
* the source code for OpenSSL in the source distribution.
*/
/* Simple utility to create the proftpd shutdown message file, allowing
* an admin to configure the shutdown, deny, disconnect times and messages.
*
* $Id: ftpshut.c,v 1.9 2011/05/23 20:46:20 castaglia Exp $
*/
#include "conf.h"
static void show_usage(char *progname) {
printf("usage: %s [ -R ] [ -l min ] [ -d min ] time "
" [ warning-message ... ]\n", progname);
exit(1);
}
static int isnumeric(char *str) {
while (str && isspace((int) *str))
str++;
if (!str || !*str)
return 0;
for (; str && *str; str++) {
if (!isdigit((int) *str))
return 0;
}
return 1;
}
int main(int argc, char *argv[]) {
int deny = 10,disc = 5,c;
FILE *outf;
char *shut,*msg,*progname = argv[0];
time_t now;
struct tm *tm;
int mn = 0,hr = 0;
opterr = 0;
while ((c = getopt(argc, argv, "Rl:d:")) != -1) {
switch (c) {
case 'R':
if (unlink(PR_SHUTMSG_PATH) < 0) {
fprintf(stderr, "%s: error removing '" PR_SHUTMSG_PATH "': %s\n",
progname, strerror(errno));
exit(1);
}
fprintf(stdout, "%s: " PR_SHUTMSG_PATH " removed\n", progname);
exit(0);
case 'l':
case 'd':
if (!optarg) {
fprintf(stderr, "%s: -%c requires an argument\n", progname, c);
show_usage(progname);
}
if (!isnumeric(optarg)) {
fprintf(stderr, "%s: -%c requires a numeric argument\n", progname, c);
show_usage(progname);
}
if (c == 'd')
disc = atoi(optarg);
else if (c == 'l')
deny = atoi(optarg);
break;
case '?':
fprintf(stderr, "%s: unknown option '%c'\n", progname, (char)optopt);
case 'h':
default:
show_usage(progname);
}
}
/* Everything left on the command line is the message */
if (optind >= argc)
show_usage(progname);
shut = argv[optind++];
if(optind < argc)
msg = argv[optind];
else
msg = "going down at %s";
time(&now);
tm = localtime(&now);
/* shut must be either 'now', '+number' or 'HHMM' */
if(strcasecmp(shut,"now") != 0) {
if(*shut == '+') {
shut++;
while (shut && *shut && isspace((int) *shut)) shut++;
if(!isnumeric(shut)) {
fprintf(stderr, "%s: Invalid time interval specified.\n", progname);
show_usage(progname);
}
now += (60 * atoi(shut));
tm = localtime(&now);
} else {
if((strlen(shut) != 4 && strlen(shut) != 2) || !isnumeric(shut)) {
fprintf(stderr, "%s: Invalid time interval specified.\n", progname);
show_usage(progname);
}
if(strlen(shut) > 2) {
mn = atoi((shut + strlen(shut) - 2));
if(mn > 59) {
fprintf(stderr, "%s: Invalid time interval specified.\n",
progname);
show_usage(progname);
}
*(shut + strlen(shut) - 2) = '\0';
}
hr = atoi(shut);
if(hr > 23) {
fprintf(stderr, "%s: Invalid time interval specified.\n",
progname);
show_usage(progname);
}
if(hr < tm->tm_hour || (hr == tm->tm_hour && mn <= tm->tm_min)) {
now += 86400; /* one day forward */
tm = localtime(&now);
}
tm->tm_hour = hr;
tm->tm_min = mn;
}
}
umask(022);
if ((outf = fopen(PR_SHUTMSG_PATH, "w")) == NULL) {
fprintf(stderr,"%s: error opening '" PR_SHUTMSG_PATH "': %s\n", progname,
strerror(errno));
exit(1);
}
fprintf(outf,"%d %d %d %d %d %d",
tm->tm_year+1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour,
tm->tm_min, tm->tm_sec);
fprintf(outf," %02d%02d %02d%02d\n",
(deny / 60),(deny % 60),
(disc / 60),(disc % 60));
fprintf(outf,"%s\n",msg);
fclose(outf);
return 0;
}
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