--- /dev/null
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <arpa/inet.h>
+
+#include "owipcalc.h"
+
+struct op {
+ const char *name;
+ const char *desc;
+ struct {
+ bool (*a1)(struct cidr *a);
+ bool (*a2)(struct cidr *a, struct cidr *b);
+ } f4;
+ struct {
+ bool (*a1)(struct cidr *a);
+ bool (*a2)(struct cidr *a, struct cidr *b);
+ } f6;
+};
+
+struct op ops[] = {
+ { .name = "add",
+ .desc = "Add argument to base address",
+ .f4.a2 = cidr_add4,
+ .f6.a2 = cidr_add6 },
+
+ { .name = "sub",
+ .desc = "Substract argument from base address",
+ .f4.a2 = cidr_sub4,
+ .f6.a2 = cidr_sub6 },
+
+ { .name = "next",
+ .desc = "Advance base address to next prefix of given size",
+ .f4.a2 = cidr_next4,
+ .f6.a2 = cidr_next6 },
+
+ { .name = "prev",
+ .desc = "Lower base address to previous prefix of give size",
+ .f4.a2 = cidr_prev4,
+ .f6.a2 = cidr_prev6 },
+
+ { .name = "network",
+ .desc = "Turn base address into network address",
+ .f4.a1 = cidr_network4,
+ .f6.a1 = cidr_network6 },
+
+ { .name = "broadcast",
+ .desc = "Turn base address into broadcast address",
+ .f4.a1 = cidr_broadcast4 },
+
+ { .name = "prefix",
+ .desc = "Set the prefix of base address to argument",
+ .f4.a2 = cidr_prefix,
+ .f6.a2 = cidr_prefix },
+
+ { .name = "netmask",
+ .desc = "Calculate netmask of base address",
+ .f4.a1 = cidr_netmask4 },
+
+ { .name = "6to4",
+ .desc = "Calculate 6to4 prefix of given ipv4-address",
+ .f4.a1 = cidr_6to4 },
+
+ { .name = "howmany",
+ .desc = "Print amount of righ-hand prefixes that fit into base address",
+ .f4.a2 = cidr_howmany,
+ .f6.a2 = cidr_howmany },
+
+ { .name = "contains",
+ .desc = "Print '1' if argument fits into base address or '0' if not",
+ .f4.a2 = cidr_contains4,
+ .f6.a2 = cidr_contains6 },
+
+ { .name = "private",
+ .desc = "Print '1' if base address is in RFC1918 private space or '0' "
+ "if not",
+ .f4.a1 = cidr_private4 },
+
+ { .name = "linklocal",
+ .desc = "Print '1' if base address is in 169.254.0.0/16 or FE80::/10 "
+ "link local space or '0' if not",
+ .f4.a1 = cidr_linklocal4,
+ .f6.a1 = cidr_linklocal6 },
+
+ { .name = "ula",
+ .desc = "Print '1' if base address is in FC00::/7 unique local address "
+ "(ULA) space or '0' if not",
+ .f6.a1 = cidr_ula6 },
+
+ { .name = "quiet",
+ .desc = "Suppress output, useful for test operation where the result can "
+ "be inferred from the exit code",
+ .f4.a1 = cidr_quiet,
+ .f6.a1 = cidr_quiet },
+
+ { .name = "pop",
+ .desc = "Pop intermediate result from stack",
+ .f4.a1 = cidr_pop,
+ .f6.a1 = cidr_pop },
+
+ { .name = "print",
+ .desc = "Print intermediate result and pop it from stack, invoked "
+ "implicitely at the end of calculation if no intermediate prints "
+ "happened",
+ .f4.a1 = cidr_print4,
+ .f6.a1 = cidr_print6 },
+};
+
+static void usage(const char *prog)
+{
+ int i;
+
+ fprintf(stderr,
+ "\n"
+ "Usage:\n\n"
+ " %s {base address} operation [argument] "
+ "[operation [argument] ...]\n\n"
+ "Operations:\n\n",
+ prog);
+
+ for (i = 0; i < sizeof(ops) / sizeof(ops[0]); i++)
+ {
+ if (ops[i].f4.a2 || ops[i].f6.a2)
+ {
+ fprintf(stderr, " %s %s\n",
+ ops[i].name,
+ (ops[i].f4.a2 && ops[i].f6.a2) ? "{ipv4/ipv6/amount}" :
+ (ops[i].f6.a2 ? "{ipv6/amount}" : "{ipv4/amount}"));
+ }
+ else
+ {
+ fprintf(stderr, " %s\n", ops[i].name);
+ }
+
+ fprintf(stderr, " %s.\n", ops[i].desc);
+
+ if ((ops[i].f4.a1 && ops[i].f6.a1) || (ops[i].f4.a2 && ops[i].f6.a2))
+ fprintf(stderr, " Applicable to ipv4- and ipv6-addresses.\n\n");
+ else if (ops[i].f6.a2 || ops[i].f6.a1)
+ fprintf(stderr, " Only applicable to ipv6-addresses.\n\n");
+ else
+ fprintf(stderr, " Only applicable to ipv4-addresses.\n\n");
+ }
+
+ fprintf(stderr,
+ "Examples:\n\n"
+ " Calculate a DHCP range:\n\n"
+ " $ %s 192.168.1.1/255.255.255.0 network add 100 print add 150 print\n"
+ " 192.168.1.100\n"
+ " 192.168.1.250\n\n"
+ " Count number of prefixes:\n\n"
+ " $ %s 2001:0DB8:FDEF::/48 howmany ::/64\n"
+ " 65536\n\n",
+ prog, prog);
+
+ exit(1);
+}
+
+static bool runop(char ***arg, int *status)
+{
+ int i;
+ char *arg1 = **arg;
+ char *arg2 = *(*arg+1);
+ struct cidr *a = stack;
+ struct cidr *b = NULL;
+
+ if (!arg1)
+ return false;
+
+ for (i = 0; i < sizeof(ops) / sizeof(ops[0]); i++)
+ {
+ if (!strcmp(ops[i].name, arg1))
+ {
+ if (ops[i].f4.a2 || ops[i].f6.a2)
+ {
+ if (!arg2)
+ {
+ fprintf(stderr, "'%s' requires an argument\n",
+ ops[i].name);
+
+ *status = 2;
+ return false;
+ }
+
+ b = cidr_parse(ops[i].name, arg2, a->family);
+
+ if (!b)
+ {
+ fprintf(stderr, "invalid address argument for '%s'\n",
+ ops[i].name);
+
+ *status = 3;
+ return false;
+ }
+
+ *arg += 2;
+
+ if (((a->family == AF_INET) && !ops[i].f4.a2) ||
+ ((a->family == AF_INET6) && !ops[i].f6.a2))
+ {
+ fprintf(stderr, "'%s' not supported for %s addresses\n",
+ ops[i].name,
+ (a->family == AF_INET) ? "ipv4" : "ipv6");
+
+ *status = 5;
+ return false;
+ }
+
+ *status = !((a->family == AF_INET) ? ops[i].f4.a2(a, b)
+ : ops[i].f6.a2(a, b));
+
+ return true;
+ }
+ else
+ {
+ *arg += 1;
+
+ if (((a->family == AF_INET) && !ops[i].f4.a1) ||
+ ((a->family == AF_INET6) && !ops[i].f6.a1))
+ {
+ fprintf(stderr, "'%s' not supported for %s addresses\n",
+ ops[i].name,
+ (a->family == AF_INET) ? "ipv4" : "ipv6");
+
+ *status = 5;
+ return false;
+ }
+
+ *status = !((a->family == AF_INET) ? ops[i].f4.a1(a)
+ : ops[i].f6.a1(a));
+
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+int main(int argc, char **argv)
+{
+ int status = 0;
+ char **arg = argv+2;
+ struct cidr *a;
+
+ // enable printing
+ quiet = false;
+
+ if (argc < 3)
+ usage(argv[0]);
+
+ a = strchr(argv[1], ':') ? cidr_parse6(argv[1]) : cidr_parse4(argv[1]);
+
+ if (!a)
+ usage(argv[0]);
+
+ cidr_push(a);
+
+ while (runop(&arg, &status));
+
+ if (*arg)
+ {
+ fprintf(stderr, "unknown operation '%s'\n", *arg);
+ exit(6);
+ }
+
+ if (!printed && (status < 2))
+ {
+ if (stack->family == AF_INET)
+ cidr_print4(stack);
+ else
+ cidr_print6(stack);
+ }
+
+ qprintf("\n");
+
+ exit(status);
+}
-/*
- * owipcalc - OpenWrt IP Calculator
- *
- * Copyright (C) 2012 Jo-Philipp Wich <jo@mein.io>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdio.h>
#include <stdint.h>
-#include <stdbool.h>
#include <stdlib.h>
-
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
+#include "owipcalc.h"
+
+bool quiet = true;
+bool printed = false;
+
+struct cidr *stack = NULL;
-struct cidr {
- uint8_t family;
- uint32_t prefix;
- union {
- struct in_addr v4;
- struct in6_addr v6;
- } addr;
- union {
- char v4[sizeof("255.255.255.255/255.255.255.255 ")];
- char v6[sizeof("FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:255.255.255.255/128 ")];
- } buf;
- struct cidr *next;
-};
-
-struct op {
- const char *name;
- const char *desc;
- struct {
- bool (*a1)(struct cidr *a);
- bool (*a2)(struct cidr *a, struct cidr *b);
- } f4;
- struct {
- bool (*a1)(struct cidr *a);
- bool (*a2)(struct cidr *a, struct cidr *b);
- } f6;
-};
-
-
-static bool quiet = false;
-static bool printed = false;
-
-static struct cidr *stack = NULL;
-
-#define qprintf(...) \
- do { \
- if (!quiet) printf(__VA_ARGS__); \
- printed = true; \
- } while(0)
-
-static void cidr_push(struct cidr *a)
+void cidr_push(struct cidr *a)
{
if (a)
{
}
}
-static bool cidr_pop(struct cidr *a)
+bool cidr_pop(struct cidr *a)
{
struct cidr *old = stack;
}
-static struct cidr * cidr_parse4(const char *s)
+struct cidr * cidr_parse4(const char *s)
{
char *p = NULL, *r;
struct in_addr mask;
return NULL;
}
-static bool cidr_add4(struct cidr *a, struct cidr *b)
+bool cidr_add4(struct cidr *a, struct cidr *b)
{
uint32_t x = ntohl(a->addr.v4.s_addr);
uint32_t y = ntohl(b->addr.v4.s_addr);
return true;
}
-static bool cidr_sub4(struct cidr *a, struct cidr *b)
+bool cidr_sub4(struct cidr *a, struct cidr *b)
{
uint32_t x = ntohl(a->addr.v4.s_addr);
uint32_t y = ntohl(b->addr.v4.s_addr);
return true;
}
-static bool cidr_network4(struct cidr *a)
+bool cidr_network4(struct cidr *a)
{
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_broadcast4(struct cidr *a)
+bool cidr_broadcast4(struct cidr *a)
{
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_contains4(struct cidr *a, struct cidr *b)
+bool cidr_contains4(struct cidr *a, struct cidr *b)
{
uint32_t net1 = a->addr.v4.s_addr & htonl(~((1 << (32 - a->prefix)) - 1));
uint32_t net2 = b->addr.v4.s_addr & htonl(~((1 << (32 - a->prefix)) - 1));
}
}
-static bool cidr_netmask4(struct cidr *a)
+bool cidr_netmask4(struct cidr *a)
{
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_private4(struct cidr *a)
+bool cidr_private4(struct cidr *a)
{
uint32_t x = ntohl(a->addr.v4.s_addr);
}
}
-static bool cidr_linklocal4(struct cidr *a)
+bool cidr_linklocal4(struct cidr *a)
{
uint32_t x = ntohl(a->addr.v4.s_addr);
}
}
-static bool cidr_prev4(struct cidr *a, struct cidr *b)
+bool cidr_prev4(struct cidr *a, struct cidr *b)
{
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_next4(struct cidr *a, struct cidr *b)
+bool cidr_next4(struct cidr *a, struct cidr *b)
{
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_6to4(struct cidr *a)
+bool cidr_6to4(struct cidr *a)
{
struct cidr *n = cidr_clone(a);
uint32_t x = a->addr.v4.s_addr;
return true;
}
-static bool cidr_print4(struct cidr *a)
+bool cidr_print4(struct cidr *a)
{
char *p;
}
-static struct cidr * cidr_parse6(const char *s)
+struct cidr * cidr_parse6(const char *s)
{
char *p = NULL, *r;
struct cidr *addr = malloc(sizeof(struct cidr));
return NULL;
}
-static bool cidr_add6(struct cidr *a, struct cidr *b)
+bool cidr_add6(struct cidr *a, struct cidr *b)
{
uint8_t idx = 15, carry = 0, overflow = 0;
return true;
}
-static bool cidr_sub6(struct cidr *a, struct cidr *b)
+bool cidr_sub6(struct cidr *a, struct cidr *b)
{
uint8_t idx = 15, carry = 0, underflow = 0;
return true;
}
-static bool cidr_prev6(struct cidr *a, struct cidr *b)
+bool cidr_prev6(struct cidr *a, struct cidr *b)
{
uint8_t idx, carry = 1, underflow = 0;
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_next6(struct cidr *a, struct cidr *b)
+bool cidr_next6(struct cidr *a, struct cidr *b)
{
uint8_t idx, carry = 1, overflow = 0;
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_network6(struct cidr *a)
+bool cidr_network6(struct cidr *a)
{
uint8_t i;
struct cidr *n = cidr_clone(a);
return true;
}
-static bool cidr_contains6(struct cidr *a, struct cidr *b)
+bool cidr_contains6(struct cidr *a, struct cidr *b)
{
struct in6_addr *x = &a->addr.v6;
struct in6_addr *y = &b->addr.v6;
}
}
-static bool cidr_linklocal6(struct cidr *a)
+bool cidr_linklocal6(struct cidr *a)
{
if (printed)
qprintf(" ");
}
}
-static bool cidr_ula6(struct cidr *a)
+bool cidr_ula6(struct cidr *a)
{
if (printed)
qprintf(" ");
}
}
-static bool cidr_print6(struct cidr *a)
+bool cidr_print6(struct cidr *a)
{
char *p;
}
-static struct cidr * cidr_parse(const char *op, const char *s, int af_hint)
+struct cidr * cidr_parse(const char *op, const char *s, int af_hint)
{
char *r;
struct cidr *a;
return a;
}
-static bool cidr_howmany(struct cidr *a, struct cidr *b)
+bool cidr_howmany(struct cidr *a, struct cidr *b)
{
if (printed)
qprintf(" ");
return true;
}
-static bool cidr_prefix(struct cidr *a, struct cidr *b)
+bool cidr_prefix(struct cidr *a, struct cidr *b)
{
a->prefix = b->prefix;
return true;
}
-static bool cidr_quiet(struct cidr *a)
+bool cidr_quiet(struct cidr *a)
{
quiet = true;
return true;
}
-
-
-struct op ops[] = {
- { .name = "add",
- .desc = "Add argument to base address",
- .f4.a2 = cidr_add4,
- .f6.a2 = cidr_add6 },
-
- { .name = "sub",
- .desc = "Substract argument from base address",
- .f4.a2 = cidr_sub4,
- .f6.a2 = cidr_sub6 },
-
- { .name = "next",
- .desc = "Advance base address to next prefix of given size",
- .f4.a2 = cidr_next4,
- .f6.a2 = cidr_next6 },
-
- { .name = "prev",
- .desc = "Lower base address to previous prefix of give size",
- .f4.a2 = cidr_prev4,
- .f6.a2 = cidr_prev6 },
-
- { .name = "network",
- .desc = "Turn base address into network address",
- .f4.a1 = cidr_network4,
- .f6.a1 = cidr_network6 },
-
- { .name = "broadcast",
- .desc = "Turn base address into broadcast address",
- .f4.a1 = cidr_broadcast4 },
-
- { .name = "prefix",
- .desc = "Set the prefix of base address to argument",
- .f4.a2 = cidr_prefix,
- .f6.a2 = cidr_prefix },
-
- { .name = "netmask",
- .desc = "Calculate netmask of base address",
- .f4.a1 = cidr_netmask4 },
-
- { .name = "6to4",
- .desc = "Calculate 6to4 prefix of given ipv4-address",
- .f4.a1 = cidr_6to4 },
-
- { .name = "howmany",
- .desc = "Print amount of righ-hand prefixes that fit into base address",
- .f4.a2 = cidr_howmany,
- .f6.a2 = cidr_howmany },
-
- { .name = "contains",
- .desc = "Print '1' if argument fits into base address or '0' if not",
- .f4.a2 = cidr_contains4,
- .f6.a2 = cidr_contains6 },
-
- { .name = "private",
- .desc = "Print '1' if base address is in RFC1918 private space or '0' "
- "if not",
- .f4.a1 = cidr_private4 },
-
- { .name = "linklocal",
- .desc = "Print '1' if base address is in 169.254.0.0/16 or FE80::/10 "
- "link local space or '0' if not",
- .f4.a1 = cidr_linklocal4,
- .f6.a1 = cidr_linklocal6 },
-
- { .name = "ula",
- .desc = "Print '1' if base address is in FC00::/7 unique local address "
- "(ULA) space or '0' if not",
- .f6.a1 = cidr_ula6 },
-
- { .name = "quiet",
- .desc = "Suppress output, useful for test operation where the result can "
- "be inferred from the exit code",
- .f4.a1 = cidr_quiet,
- .f6.a1 = cidr_quiet },
-
- { .name = "pop",
- .desc = "Pop intermediate result from stack",
- .f4.a1 = cidr_pop,
- .f6.a1 = cidr_pop },
-
- { .name = "print",
- .desc = "Print intermediate result and pop it from stack, invoked "
- "implicitely at the end of calculation if no intermediate prints "
- "happened",
- .f4.a1 = cidr_print4,
- .f6.a1 = cidr_print6 },
-};
-
-static void usage(const char *prog)
-{
- int i;
-
- fprintf(stderr,
- "\n"
- "Usage:\n\n"
- " %s {base address} operation [argument] "
- "[operation [argument] ...]\n\n"
- "Operations:\n\n",
- prog);
-
- for (i = 0; i < sizeof(ops) / sizeof(ops[0]); i++)
- {
- if (ops[i].f4.a2 || ops[i].f6.a2)
- {
- fprintf(stderr, " %s %s\n",
- ops[i].name,
- (ops[i].f4.a2 && ops[i].f6.a2) ? "{ipv4/ipv6/amount}" :
- (ops[i].f6.a2 ? "{ipv6/amount}" : "{ipv4/amount}"));
- }
- else
- {
- fprintf(stderr, " %s\n", ops[i].name);
- }
-
- fprintf(stderr, " %s.\n", ops[i].desc);
-
- if ((ops[i].f4.a1 && ops[i].f6.a1) || (ops[i].f4.a2 && ops[i].f6.a2))
- fprintf(stderr, " Applicable to ipv4- and ipv6-addresses.\n\n");
- else if (ops[i].f6.a2 || ops[i].f6.a1)
- fprintf(stderr, " Only applicable to ipv6-addresses.\n\n");
- else
- fprintf(stderr, " Only applicable to ipv4-addresses.\n\n");
- }
-
- fprintf(stderr,
- "Examples:\n\n"
- " Calculate a DHCP range:\n\n"
- " $ %s 192.168.1.1/255.255.255.0 network add 100 print add 150 print\n"
- " 192.168.1.100\n"
- " 192.168.1.250\n\n"
- " Count number of prefixes:\n\n"
- " $ %s 2001:0DB8:FDEF::/48 howmany ::/64\n"
- " 65536\n\n",
- prog, prog);
-
- exit(1);
-}
-
-static bool runop(char ***arg, int *status)
-{
- int i;
- char *arg1 = **arg;
- char *arg2 = *(*arg+1);
- struct cidr *a = stack;
- struct cidr *b = NULL;
-
- if (!arg1)
- return false;
-
- for (i = 0; i < sizeof(ops) / sizeof(ops[0]); i++)
- {
- if (!strcmp(ops[i].name, arg1))
- {
- if (ops[i].f4.a2 || ops[i].f6.a2)
- {
- if (!arg2)
- {
- fprintf(stderr, "'%s' requires an argument\n",
- ops[i].name);
-
- *status = 2;
- return false;
- }
-
- b = cidr_parse(ops[i].name, arg2, a->family);
-
- if (!b)
- {
- fprintf(stderr, "invalid address argument for '%s'\n",
- ops[i].name);
-
- *status = 3;
- return false;
- }
-
- *arg += 2;
-
- if (((a->family == AF_INET) && !ops[i].f4.a2) ||
- ((a->family == AF_INET6) && !ops[i].f6.a2))
- {
- fprintf(stderr, "'%s' not supported for %s addresses\n",
- ops[i].name,
- (a->family == AF_INET) ? "ipv4" : "ipv6");
-
- *status = 5;
- return false;
- }
-
- *status = !((a->family == AF_INET) ? ops[i].f4.a2(a, b)
- : ops[i].f6.a2(a, b));
-
- return true;
- }
- else
- {
- *arg += 1;
-
- if (((a->family == AF_INET) && !ops[i].f4.a1) ||
- ((a->family == AF_INET6) && !ops[i].f6.a1))
- {
- fprintf(stderr, "'%s' not supported for %s addresses\n",
- ops[i].name,
- (a->family == AF_INET) ? "ipv4" : "ipv6");
-
- *status = 5;
- return false;
- }
-
- *status = !((a->family == AF_INET) ? ops[i].f4.a1(a)
- : ops[i].f6.a1(a));
-
- return true;
- }
- }
- }
-
- return false;
-}
-
-int main(int argc, char **argv)
-{
- int status = 0;
- char **arg = argv+2;
- struct cidr *a;
-
- if (argc < 3)
- usage(argv[0]);
-
- a = strchr(argv[1], ':') ? cidr_parse6(argv[1]) : cidr_parse4(argv[1]);
-
- if (!a)
- usage(argv[0]);
-
- cidr_push(a);
-
- while (runop(&arg, &status));
-
- if (*arg)
- {
- fprintf(stderr, "unknown operation '%s'\n", *arg);
- exit(6);
- }
-
- if (!printed && (status < 2))
- {
- if (stack->family == AF_INET)
- cidr_print4(stack);
- else
- cidr_print6(stack);
- }
-
- qprintf("\n");
-
- exit(status);
-}
--- /dev/null
+/*
+ * owipcalc - OpenWrt IP Calculator
+ *
+ * Copyright (C) 2012 Jo-Philipp Wich <jo@mein.io>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __OWIPCALC_H__
+#define __OWIPCALC_H__
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <arpa/inet.h>
+
+#define qprintf(...) \
+ do { \
+ if (!quiet) printf(__VA_ARGS__); \
+ printed = true; \
+ } while(0)
+
+struct cidr {
+ uint8_t family;
+ uint32_t prefix;
+ union {
+ struct in_addr v4;
+ struct in6_addr v6;
+ } addr;
+ union {
+ char v4[sizeof("255.255.255.255/255.255.255.255 ")];
+ char v6[sizeof("FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:255.255.255.255/128 ")];
+ } buf;
+ struct cidr *next;
+};
+
+void cidr_push(struct cidr *a);
+bool cidr_pop(struct cidr *a);
+
+struct cidr * cidr_parse4(const char *s);
+bool cidr_add4(struct cidr *a, struct cidr *b);
+bool cidr_sub4(struct cidr *a, struct cidr *b);
+bool cidr_network4(struct cidr *a);
+bool cidr_broadcast4(struct cidr *a);
+bool cidr_contains4(struct cidr *a, struct cidr *b);
+bool cidr_netmask4(struct cidr *a);
+bool cidr_private4(struct cidr *a);
+bool cidr_linklocal4(struct cidr *a);
+bool cidr_prev4(struct cidr *a, struct cidr *b);
+bool cidr_next4(struct cidr *a, struct cidr *b);
+bool cidr_6to4(struct cidr *a);
+bool cidr_print4(struct cidr *a);
+struct cidr * cidr_parse6(const char *s);
+bool cidr_add6(struct cidr *a, struct cidr *b);
+bool cidr_sub6(struct cidr *a, struct cidr *b);
+bool cidr_prev6(struct cidr *a, struct cidr *b);
+bool cidr_next6(struct cidr *a, struct cidr *b);
+bool cidr_network6(struct cidr *a);
+bool cidr_contains6(struct cidr *a, struct cidr *b);
+bool cidr_linklocal6(struct cidr *a);
+bool cidr_ula6(struct cidr *a);
+bool cidr_print6(struct cidr *a);
+struct cidr * cidr_parse(const char *op, const char *s, int af_hint);
+bool cidr_howmany(struct cidr *a, struct cidr *b);
+bool cidr_prefix(struct cidr *a, struct cidr *b);
+bool cidr_quiet(struct cidr *a);
+
+extern struct cidr *stack;
+extern bool quiet;
+extern bool printed;
+
+#endif
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