-/*
-** Copyright (C) 2006- Sami Kerola <kerolasa@iki.fi>
-**
-** This program is free software; you can redistribute it and/or modify
+/* http://dhcpd-pools.sourceforge.net/
+** Copyright 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
+** the Free Software Foundation, either version 3 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.
+** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
extern void exit();
extern char *malloc();
#endif /* STDC_HEADERS */
-#include <errno.h>
#include <err.h>
-#include <stdarg.h>
+#include <errno.h>
+#include <stddef.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
void *safe_malloc(const size_t size)
{
void *ret = malloc(size);
-
if (ret == NULL) {
err(EXIT_FAILURE,
"safe_malloc: cannot allocate %lu bytes: ", size);
return ret;
}
+/* Simple memory reallocation wrapper */
+void *safe_realloc(void *ptr, const size_t size)
+{
+ void *ret = realloc(ptr, size);
+
+ if (!ret && size)
+ err(EXIT_FAILURE,
+ "safe_realloc: cannot allocate %zu bytes", size);
+ return ret;
+}
+
+/* Simple strdup wrapper */
+char *safe_strdup(const char *str)
+{
+ char *ret = strdup(str);
+
+ if (!ret && str)
+ err(EXIT_FAILURE, "cannot duplicate string");
+ return ret;
+}
+
void flip_ranges(struct range_t *ranges, struct range_t *tmp_ranges)
{
unsigned int i = num_ranges - 1, j;
/* Free memory, flush buffers etc */
void clean_up(void)
{
- int ret;
- if (errno) {
- warn("clean_up: errno (%d) set but not checked in correct place.\nif 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) {
- warn("clean_up: stdout");
+ if (fflush(NULL)) {
+ warn("clean_up: fflush");
}
- ret = fflush(stderr);
- if (errno || ret) {
- warn("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);
}
"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");
+ exit(EXIT_SUCCESS);
}
void usage(int status)
FILE *out;
out = status != 0 ? stderr : stdout;
- fprintf(out, "\
-Usage: %s [OPTIONS]\n", program_invocation_short_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");
+ 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);