/*
-** Copyright (C) 2006- Sami Kerola <kerolasa@iki.fi>
-**
-** 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.
-*/
+ * The dhcpd-pools has BSD 2-clause license which also known as "Simplified
+ * BSD License" or "FreeBSD License".
+ *
+ * Copyright 2006- Sami Kerola. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing
+ * official policies, either expressed or implied, of Sami Kerola.
+ */
#ifdef HAVE_CONFIG_H
#include <config.h>
extern void exit();
extern char *malloc();
#endif /* STDC_HEADERS */
+#include <err.h>
#include <errno.h>
-#include <stdarg.h>
+#include <stddef.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#endif
/* Simple memory allocation wrapper */
-void *safe_malloc(size_t size)
+void *safe_malloc(const size_t size)
{
void *ret = malloc(size);
if (ret == NULL) {
- eprintf("safe_malloc: malloc: ");
- exit(EXIT_FAILURE);
+ err(EXIT_FAILURE,
+ "safe_malloc: cannot allocate %lu bytes: ", size);
}
+
return ret;
}
-/* Copyright (C) 1999 Lucent Technologies
- * Excerpted from 'The Practice of Programming'
- * by Brian W. Kernighan and Rob Pike
- * slight modifications by Sami Kerola.
- * eprintf: print error message and exit */
-void eprintf(char *fmt, ...)
+/* Simple memory reallocation wrapper */
+void *safe_realloc(void *ptr, const size_t size)
{
- va_list args;
+ void *ret = realloc(ptr, size);
- fflush(stdout);
- fprintf(stderr, "%s: ", program_name);
-
- va_start(args, fmt);
- vfprintf(stderr, fmt, args);
- va_end(args);
+ if (!ret && size)
+ err(EXIT_FAILURE,
+ "safe_realloc: cannot allocate %zu bytes", size);
+ return ret;
+}
- if (fmt[0] != '\0' && fmt[strlen(fmt) - 1] == ':')
- fprintf(stderr, " %s", strerror(errno));
- /* Should be safe, after all dhcpd-pools has only one
- * thread. */
- errno = 0;
+/* Simple strdup wrapper */
+char *safe_strdup(const char *str)
+{
+ char *ret = strdup(str);
- fprintf(stderr, "\n");
- fflush(stderr);
+ if (!ret && str)
+ err(EXIT_FAILURE, "cannot duplicate string");
+ return ret;
}
void flip_ranges(struct range_t *ranges, struct range_t *tmp_ranges)
memcpy(ranges, tmp_ranges, num_ranges * sizeof(struct range_t));
}
-
/* Free memory, flush buffers etc */
void clean_up(void)
{
- int ret;
- if (errno) {
- eprintf
- ("clean_up: errno (%d) set but not checked in correct place; if this is repeatable send strace output as a bug report:",
- errno);
- }
+ unsigned int i;
+
/* Just in case there something in buffers */
- ret = fflush(stdout);
- if (errno || ret) {
- eprintf("clean_up: stdout:");
+ if (fflush(NULL)) {
+ warn("clean_up: fflush");
}
- ret = fflush(stderr);
- if (errno || ret) {
- eprintf("clean_up: stderr:");
+ num_shared_networks++;
+ for (i = 0; i < num_shared_networks; i++) {
+ free((shared_networks + i)->name);
}
free(config.dhcpdconf_file);
free(config.dhcpdlease_file);
free(config.output_file);
free(ranges);
- free(shared_net_names);
+ free(leases);
+ free(backups);
+ free(touches);
free(shared_networks);
}
fprintf(stdout,
"Written by Sami Kerola.\nXML support by Dominic Germain, Sogetel inc.\n\n");
fprintf(stdout,
- "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
- fprintf(stdout,
- "This is free software: you are free to change and redistribute it.\n");
- fprintf(stdout,
- "There is NO WARRANTY, to the extent permitted by law.\n");
+ "The software has FreeBSD License.\n");
+ exit(EXIT_SUCCESS);
}
void usage(int status)
FILE *out;
out = status != 0 ? stderr : stdout;
- fprintf(out, "\
-Usage: %s [OPTIONS]\n", program_name);
+ fprintf(out, "\n\
+Usage: %s [OPTIONS]\n\n", program_invocation_short_name);
fprintf(out, "\
This is ISC dhcpd pools usage analyzer.\n\
\n");
fprintf(out, "\
- -c --config file path to the dhcpd.conf file\n\
- -l --leases file path to the dhcpd.leases file\n\
- -f --format [thcxX] output format\n");
+ -c, --config=FILE path to the dhcpd.conf file\n\
+ -l, --leases=FILE path to the dhcpd.leases file\n\
+ -f, --format=[thHcxX] output format\n");
fprintf(out, "\
- t for text\n\
- h for html table\n\
- H for full html page\n\
- x for xml\n\
- X for xml with active lease details\n\
- c for comma separated values\n");
-/* TODO
- s for snmp\n");
- */
+ t for text\n\
+ h for html table\n\
+ H for full html page\n\
+ x for xml\n\
+ X for xml with active lease details\n\
+ c for comma separated values\n");
fprintf(out, "\
- -s --sort [nimcptTe] sort ranges by\n\
- n name\n\
- i IP\n\
- m maxium\n\
- c current\n\
- p percent\n\
- t touched\n\
- T t+c\n\
- e t+c perc\n");
+ -s, --sort=[nimcptTe] sort ranges by\n\
+ n name\n\
+ i IP\n\
+ m maxium\n\
+ c current\n\
+ p percent\n\
+ t touched\n\
+ T t+c\n\
+ e t+c perc\n");
fprintf(out, "\
- -r --reverse reverse order sort\n\
- -o --output file output into a file\n\
- -L --limit nr output limit mask 77 - 00\n\
- -v --version version information\n\
- -h --help this screen\n\
+ -r, --reverse reverse order sort\n\
+ -o, --output=FILE output into a file\n\
+ -L, --limit=NR output limit mask 77 - 00\n\
+ -v, --version version information\n\
+ -h, --help this screen\n\
\n\
Report bugs to <%s>\n\
Homepage: %s\n", PACKAGE_BUGREPORT, PACKAGE_URL);
- exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
+ exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
git.asbjorn.biz / debian / dhcpd-pools.git / blobdiff