-/*
-** 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 char *malloc();
#endif /* STDC_HEADERS */
#include <errno.h>
+#include <err.h>
#include <stdarg.h>
#ifdef HAVE_STRING_H
#include <string.h>
#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 strdup wrapper */
+char *safe_strdup(const char *str)
{
- va_list args;
-
- fflush(stdout);
- fprintf(stderr, "%s: ", program_name);
-
- va_start(args, fmt);
- vfprintf(stderr, fmt, args);
- va_end(args);
-
- 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;
+ 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);
+ warn("clean_up: errno (%d) set but not checked in correct place.\nif this is repeatable send strace output as a bug report", errno);
}
/* Just in case there something in buffers */
ret = fflush(stdout);
if (errno || ret) {
- eprintf("clean_up: stdout:");
+ warn("clean_up: stdout");
}
ret = fflush(stderr);
if (errno || ret) {
- eprintf("clean_up: stderr:");
+ warn("clean_up: stderr");
}
+
free(config.dhcpdconf_file);
free(config.dhcpdlease_file);
free(config.output_file);
"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)
out = status != 0 ? stderr : stdout;
fprintf(out, "\
-Usage: %s [OPTIONS]\n", program_name);
+Usage: %s [OPTIONS]\n", program_invocation_short_name);
fprintf(out, "\
This is ISC dhcpd pools usage analyzer.\n\
\n");
x for xml\n\
X for xml with active lease details\n\
c for comma separated values\n");
-/* TODO
- s for snmp\n");
- */
fprintf(out, "\
-s --sort [nimcptTe] sort ranges by\n\
n name\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);
}