2 * The dhcpd-pools has BSD 2-clause license which also known as "Simplified
3 * BSD License" or "FreeBSD License".
5 * Copyright 2006- Sami Kerola. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the
19 * THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS
20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGE.
31 * The views and conclusions contained in the software and documentation are
32 * those of the authors and should not be interpreted as representing
33 * official policies, either expressed or implied, of Sami Kerola.
37 # define DHCPD_POOLS_H 1
42 /* Feature test switches */
43 #define _POSIX_SOURCE 1
44 #define POSIXLY_CORRECT 1
49 extern char *malloc();
50 #define EXIT_FAILURE 1
51 #define EXIT_SUCCESS 0
52 #endif /* STDC_HEADERS */
54 #ifndef HAVE_PROGRAM_INVOCATION_SHORT_NAME
55 # ifdef HAVE___PROGNAME
56 extern char *__progname;
57 # define program_invocation_short_name __progname
58 # else /* HAVE___PROGNAME */
59 # ifdef HAVE_GETEXECNAME
61 # define program_invocation_short_name \
62 prog_inv_sh_nm_from_file(getexecname(), 0)
63 # else /* HAVE_GETEXECNAME */
64 # define program_invocation_short_name \
65 prog_inv_sh_nm_from_file(__FILE__, 1)
66 # endif /* HAVE_PROGRAM_INVOCATION_SHORT_NAME */
67 static char prog_inv_sh_nm_buf[256];
68 static inline char *prog_inv_sh_nm_from_file(char *f, char stripext)
71 if ((t = strrchr(f, '/')) != NULL) {
76 strncpy(prog_inv_sh_nm_buf, t, sizeof(prog_inv_sh_nm_buf) - 1);
77 prog_inv_sh_nm_buf[sizeof(prog_inv_sh_nm_buf) - 1] = '\0';
79 if (stripext && (t = strrchr(prog_inv_sh_nm_buf, '.')) != NULL) {
82 return prog_inv_sh_nm_buf;
87 /* Structures and unions */
88 struct configuration_t {
90 char *dhcpdlease_file;
91 char output_format[2];
97 struct shared_network_t {
99 unsigned long int available;
100 unsigned long int used;
101 unsigned long int touched;
102 unsigned long int backups;
105 struct shared_network_t *shared_net;
106 unsigned long int first_ip;
107 unsigned long int last_ip;
108 unsigned long int count;
109 unsigned long int touched;
110 unsigned long int backups;
115 struct macaddr_t *next;
118 /* Global variables */
119 static int const true = 1;
120 static int const false = 0;
122 struct configuration_t config;
124 static int const output_limit_bit_1 = 1;
125 static int const output_limit_bit_2 = 2;
126 static int const output_limit_bit_3 = 4;
127 unsigned int fullhtml;
129 struct shared_network_t *shared_networks;
130 unsigned int num_shared_networks;
132 struct range_t *ranges;
133 unsigned int num_ranges;
135 unsigned long int *leases;
136 unsigned long int num_leases;
138 unsigned long int *touches;
139 unsigned long int num_touches;
141 unsigned long int *backups;
142 unsigned long int num_backups;
144 struct macaddr_t *macaddr;
146 /* Function prototypes */
147 int prepare_memory(void);
148 int parse_leases(void);
149 void parse_config(int, char *, struct shared_network_t *)
150 __attribute__ ((nonnull(2, 3)));
151 int nth_field(int n, char *dest, const char *src)
152 __attribute__ ((nonnull(2, 3)))
153 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
154 __attribute__ ((__hot__))
157 int prepare_data(void);
158 int do_counting(void);
159 void flip_ranges(struct range_t *ranges, struct range_t *tmp_ranges)
160 __attribute__ ((nonnull(1, 2)));
161 /* General support functions */
162 void *safe_malloc(const size_t size)
164 __attribute__ ((__malloc__))
165 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
166 __attribute__ ((__alloc_size__((1))))
170 void *safe_realloc(void *ptr, const size_t size);
171 char *safe_strdup(const char *str) __attribute__ ((nonnull(1)));
172 void print_version(void) __attribute__ ((noreturn));
173 void usage(int status) __attribute__ ((noreturn));
174 /* qsort required functions... */
175 /* ...for ranges and... */
176 int intcomp(const void *x, const void *y) __attribute__ ((nonnull(1, 2)));
177 int rangecomp(const void *r1, const void *r2)
178 __attribute__ ((nonnull(1, 2)));
179 /* sort function pointer and functions */
181 unsigned long int (*returner) (struct range_t r);
182 unsigned long int ret_ip(struct range_t r);
183 unsigned long int ret_cur(struct range_t r);
184 unsigned long int ret_max(struct range_t r);
185 unsigned long int ret_percent(struct range_t r);
186 unsigned long int ret_touched(struct range_t r);
187 unsigned long int ret_tc(struct range_t r);
188 unsigned long int ret_tcperc(struct range_t r);
189 void field_selector(char c);
190 int get_order(struct range_t *left, struct range_t *right)
191 __attribute__ ((nonnull(1, 2)));
192 void mergesort_ranges(struct range_t *orig, int size, struct range_t *temp)
193 __attribute__ ((nonnull(1, 3)));
194 /* output function pointer and functions */
195 int (*output_analysis) (void);
196 int output_txt(void);
197 int output_html(void);
198 int output_xml(void);
199 int output_csv(void);
200 /* Memory release, file closing etc */
203 #endif /* DHCPD_POOLS_H */