[PATCH 1/2] owipcalc: remove package
Adrian Schmutzler
freifunk at adrianschmutzler.de
Fri Jan 22 04:51:24 EST 2021
This is a helpful utility, but it does not have any dependencies
in this repository. Move it to packages feed.
Cc: Jo-Philipp Wich <jo at mein.io>
Cc: Nick Hainke <vincent at systemli.org>
Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
package/network/utils/owipcalc/Makefile | 44 -
package/network/utils/owipcalc/src/owipcalc.c | 950 ------------------
2 files changed, 994 deletions(-)
delete mode 100644 package/network/utils/owipcalc/Makefile
delete mode 100644 package/network/utils/owipcalc/src/owipcalc.c
diff --git a/package/network/utils/owipcalc/Makefile b/package/network/utils/owipcalc/Makefile
deleted file mode 100644
index dc68a0346b..0000000000
--- a/package/network/utils/owipcalc/Makefile
+++ /dev/null
@@ -1,44 +0,0 @@
-#
-# Copyright (C) 2012 Jo-Philipp Wich <jo at mein.io>
-#
-# This is free software, licensed under the Apache 2 license.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=owipcalc
-PKG_RELEASE:=5
-PKG_LICENSE:=Apache-2.0
-
-include $(INCLUDE_DIR)/package.mk
-
-
-define Package/owipcalc
- SECTION:=utils
- CATEGORY:=Utilities
- TITLE:=Simple IPv4/IPv6 address calculator
- MAINTAINER:=Jo-Philipp Wich <jo at mein.io>
-endef
-
-define Package/owipcalc/description
- The owipcalc utility supports a number of calculations and tests to work
- with ip-address ranges, this is useful for scripts that e.g. need to
- partition ipv6-prefixes into small subnets or to calculate address ranges
- for dhcp pools.
-endef
-
-define Build/Configure
-endef
-
-define Build/Compile
- $(TARGET_CC) $(TARGET_CFLAGS) \
- -o $(PKG_BUILD_DIR)/owipcalc $(PKG_BUILD_DIR)/owipcalc.c
-endef
-
-
-define Package/owipcalc/install
- $(INSTALL_DIR) $(1)/usr/bin
- $(INSTALL_BIN) $(PKG_BUILD_DIR)/owipcalc $(1)/usr/bin/owipcalc
-endef
-
-$(eval $(call BuildPackage,owipcalc))
diff --git a/package/network/utils/owipcalc/src/owipcalc.c b/package/network/utils/owipcalc/src/owipcalc.c
deleted file mode 100644
index 5ed609f158..0000000000
--- a/package/network/utils/owipcalc/src/owipcalc.c
+++ /dev/null
@@ -1,950 +0,0 @@
-/*
- * owipcalc - OpenWrt IP Calculator
- *
- * Copyright (C) 2012 Jo-Philipp Wich <jo at 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>
-
-
-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)
-{
- if (a)
- {
- a->next = stack;
- stack = a;
- }
-}
-
-static bool cidr_pop(struct cidr *a)
-{
- struct cidr *old = stack;
-
- if (old)
- {
- stack = stack->next;
- free(old);
-
- return true;
- }
-
- return false;
-}
-
-static struct cidr * cidr_clone(struct cidr *a)
-{
- struct cidr *b = malloc(sizeof(*b));
-
- if (!b)
- {
- fprintf(stderr, "out of memory\n");
- exit(255);
- }
-
- memcpy(b, a, sizeof(*b));
- cidr_push(b);
-
- return b;
-}
-
-
-static struct cidr * cidr_parse4(const char *s)
-{
- char *p = NULL, *r;
- struct in_addr mask;
- struct cidr *addr = malloc(sizeof(struct cidr));
-
- if (!addr || (strlen(s) >= sizeof(addr->buf.v4)))
- goto err;
-
- snprintf(addr->buf.v4, sizeof(addr->buf.v4), "%s", s);
-
- addr->family = AF_INET;
-
- if ((p = strchr(addr->buf.v4, '/')) != NULL)
- {
- *p++ = 0;
-
- if (strchr(p, '.') != NULL)
- {
- if (inet_pton(AF_INET, p, &mask) != 1)
- goto err;
-
- for (addr->prefix = 0; mask.s_addr; mask.s_addr >>= 1)
- addr->prefix += (mask.s_addr & 1);
- }
- else
- {
- addr->prefix = strtoul(p, &r, 10);
-
- if ((p == r) || (*r != 0) || (addr->prefix > 32))
- goto err;
- }
- }
- else
- {
- addr->prefix = 32;
- }
-
- if (p == addr->buf.v4+1)
- memset(&addr->addr.v4, 0, sizeof(addr->addr.v4));
- else if (inet_pton(AF_INET, addr->buf.v4, &addr->addr.v4) != 1)
- goto err;
-
- return addr;
-
-err:
- if (addr)
- free(addr);
-
- return NULL;
-}
-
-static 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);
-
- struct cidr *n = cidr_clone(a);
-
- if ((n->family != AF_INET) || (b->family != AF_INET))
- return false;
-
- if ((uint32_t)(x + y) < x)
- {
- fprintf(stderr, "overflow during 'add'\n");
- return false;
- }
-
- n->addr.v4.s_addr = htonl(x + y);
- return true;
-}
-
-static 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);
-
- struct cidr *n = cidr_clone(a);
-
- if ((n->family != AF_INET) || (b->family != AF_INET))
- return false;
-
- if ((uint32_t)(x - y) > x)
- {
- fprintf(stderr, "underflow during 'sub'\n");
- return false;
- }
-
- n->addr.v4.s_addr = htonl(x - y);
- return true;
-}
-
-static bool cidr_network4(struct cidr *a)
-{
- struct cidr *n = cidr_clone(a);
-
- n->addr.v4.s_addr &= htonl(~((1 << (32 - n->prefix)) - 1));
- n->prefix = 32;
-
- return true;
-}
-
-static bool cidr_broadcast4(struct cidr *a)
-{
- struct cidr *n = cidr_clone(a);
-
- n->addr.v4.s_addr |= htonl(((1 << (32 - n->prefix)) - 1));
- n->prefix = 32;
-
- return true;
-}
-
-static 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));
-
- if (printed)
- qprintf(" ");
-
- if ((b->prefix >= a->prefix) && (net1 == net2))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_netmask4(struct cidr *a)
-{
- struct cidr *n = cidr_clone(a);
-
- n->addr.v4.s_addr = htonl(~((1 << (32 - n->prefix)) - 1));
- n->prefix = 32;
-
- return true;
-}
-
-static bool cidr_private4(struct cidr *a)
-{
- uint32_t x = ntohl(a->addr.v4.s_addr);
-
- if (printed)
- qprintf(" ");
-
- if (((x >= 0x0A000000) && (x <= 0x0AFFFFFF)) ||
- ((x >= 0xAC100000) && (x <= 0xAC1FFFFF)) ||
- ((x >= 0xC0A80000) && (x <= 0xC0A8FFFF)))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_linklocal4(struct cidr *a)
-{
- uint32_t x = ntohl(a->addr.v4.s_addr);
-
- if (printed)
- qprintf(" ");
-
- if ((x >= 0xA9FE0000) && (x <= 0xA9FEFFFF))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_prev4(struct cidr *a, struct cidr *b)
-{
- struct cidr *n = cidr_clone(a);
-
- n->prefix = b->prefix;
- n->addr.v4.s_addr -= htonl(1 << (32 - b->prefix));
-
- return true;
-}
-
-static bool cidr_next4(struct cidr *a, struct cidr *b)
-{
- struct cidr *n = cidr_clone(a);
-
- n->prefix = b->prefix;
- n->addr.v4.s_addr += htonl(1 << (32 - b->prefix));
-
- return true;
-}
-
-static bool cidr_6to4(struct cidr *a)
-{
- struct cidr *n = cidr_clone(a);
- uint32_t x = a->addr.v4.s_addr;
-
- memset(&n->addr.v6.s6_addr, 0, sizeof(n->addr.v6.s6_addr));
-
- n->family = AF_INET6;
- n->prefix = 48;
-
- n->addr.v6.s6_addr[0] = 0x20;
- n->addr.v6.s6_addr[1] = 0x02;
- n->addr.v6.s6_addr[2] = (x >> 24);
- n->addr.v6.s6_addr[3] = (x >> 16) & 0xFF;
- n->addr.v6.s6_addr[4] = (x >> 8) & 0xFF;
- n->addr.v6.s6_addr[5] = x & 0xFF;
-
- return true;
-}
-
-static bool cidr_print4(struct cidr *a)
-{
- char *p;
-
- if (!a || (a->family != AF_INET))
- return false;
-
- if (!(p = (char *)inet_ntop(AF_INET, &a->addr.v4, a->buf.v4, sizeof(a->buf.v4))))
- return false;
-
- if (printed)
- qprintf(" ");
-
- qprintf("%s", p);
-
- if (a->prefix < 32)
- qprintf("/%u", a->prefix);
-
- cidr_pop(a);
-
- return true;
-}
-
-
-static struct cidr * cidr_parse6(const char *s)
-{
- char *p = NULL, *r;
- struct cidr *addr = malloc(sizeof(struct cidr));
-
- if (!addr || (strlen(s) >= sizeof(addr->buf.v6)))
- goto err;
-
- snprintf(addr->buf.v6, sizeof(addr->buf.v6), "%s", s);
-
- addr->family = AF_INET6;
-
- if ((p = strchr(addr->buf.v6, '/')) != NULL)
- {
- *p++ = 0;
-
- addr->prefix = strtoul(p, &r, 10);
-
- if ((p == r) || (*r != 0) || (addr->prefix > 128))
- goto err;
- }
- else
- {
- addr->prefix = 128;
- }
-
- if (p == addr->buf.v6+1)
- memset(&addr->addr.v6, 0, sizeof(addr->addr.v6));
- else if (inet_pton(AF_INET6, addr->buf.v6, &addr->addr.v6) != 1)
- goto err;
-
- return addr;
-
-err:
- if (addr)
- free(addr);
-
- return NULL;
-}
-
-static bool cidr_add6(struct cidr *a, struct cidr *b)
-{
- uint8_t idx = 15, carry = 0, overflow = 0;
-
- struct cidr *n = cidr_clone(a);
- struct in6_addr *x = &n->addr.v6;
- struct in6_addr *y = &b->addr.v6;
-
- if ((a->family != AF_INET6) || (b->family != AF_INET6))
- return false;
-
- do {
- overflow = !!((x->s6_addr[idx] + y->s6_addr[idx] + carry) >= 256);
- x->s6_addr[idx] += y->s6_addr[idx] + carry;
- carry = overflow;
- }
- while (idx-- > 0);
-
- if (carry)
- {
- fprintf(stderr, "overflow during 'add'\n");
- return false;
- }
-
- return true;
-}
-
-static bool cidr_sub6(struct cidr *a, struct cidr *b)
-{
- uint8_t idx = 15, carry = 0, underflow = 0;
-
- struct cidr *n = cidr_clone(a);
- struct in6_addr *x = &n->addr.v6;
- struct in6_addr *y = &b->addr.v6;
-
- if ((n->family != AF_INET6) || (b->family != AF_INET6))
- return false;
-
- do {
- underflow = !!((x->s6_addr[idx] - y->s6_addr[idx] - carry) < 0);
- x->s6_addr[idx] -= y->s6_addr[idx] + carry;
- carry = underflow;
- }
- while (idx-- > 0);
-
- if (carry)
- {
- fprintf(stderr, "underflow during 'sub'\n");
- return false;
- }
-
- return true;
-}
-
-static bool cidr_prev6(struct cidr *a, struct cidr *b)
-{
- uint8_t idx, carry = 1, underflow = 0;
- struct cidr *n = cidr_clone(a);
- struct in6_addr *x = &n->addr.v6;
-
- if (b->prefix == 0)
- {
- fprintf(stderr, "underflow during 'prev'\n");
- return false;
- }
-
- idx = (b->prefix - 1) / 8;
-
- do {
- underflow = !!((x->s6_addr[idx] - carry) < 0);
- x->s6_addr[idx] -= carry;
- carry = underflow;
- }
- while (idx-- > 0);
-
- if (carry)
- {
- fprintf(stderr, "underflow during 'prev'\n");
- return false;
- }
-
- n->prefix = b->prefix;
-
- return true;
-}
-
-static bool cidr_next6(struct cidr *a, struct cidr *b)
-{
- uint8_t idx, carry = 1, overflow = 0;
- struct cidr *n = cidr_clone(a);
- struct in6_addr *x = &n->addr.v6;
-
- if (b->prefix == 0)
- {
- fprintf(stderr, "overflow during 'next'\n");
- return false;
- }
-
- idx = (b->prefix - 1) / 8;
-
- do {
- overflow = !!((x->s6_addr[idx] + carry) >= 256);
- x->s6_addr[idx] += carry;
- carry = overflow;
- }
- while (idx-- > 0);
-
- if (carry)
- {
- fprintf(stderr, "overflow during 'next'\n");
- return false;
- }
-
- n->prefix = b->prefix;
-
- return true;
-}
-
-static bool cidr_network6(struct cidr *a)
-{
- uint8_t i;
- struct cidr *n = cidr_clone(a);
-
- for (i = 0; i < (128 - n->prefix) / 8; i++)
- n->addr.v6.s6_addr[15-i] = 0;
-
- if ((128 - n->prefix) % 8)
- n->addr.v6.s6_addr[15-i] &= ~((1 << ((128 - n->prefix) % 8)) - 1);
-
- return true;
-}
-
-static bool cidr_contains6(struct cidr *a, struct cidr *b)
-{
- struct in6_addr *x = &a->addr.v6;
- struct in6_addr *y = &b->addr.v6;
- uint8_t i = (128 - a->prefix) / 8;
- uint8_t m = ~((1 << ((128 - a->prefix) % 8)) - 1);
- uint8_t net1 = x->s6_addr[15-i] & m;
- uint8_t net2 = y->s6_addr[15-i] & m;
-
- if (printed)
- qprintf(" ");
-
- if ((b->prefix >= a->prefix) && (net1 == net2) &&
- ((i == 15) || !memcmp(&x->s6_addr, &y->s6_addr, 15-i)))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_linklocal6(struct cidr *a)
-{
- if (printed)
- qprintf(" ");
-
- if ((a->addr.v6.s6_addr[0] == 0xFE) &&
- (a->addr.v6.s6_addr[1] >= 0x80) &&
- (a->addr.v6.s6_addr[1] <= 0xBF))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_ula6(struct cidr *a)
-{
- if (printed)
- qprintf(" ");
-
- if ((a->addr.v6.s6_addr[0] >= 0xFC) &&
- (a->addr.v6.s6_addr[0] <= 0xFD))
- {
- qprintf("1");
- return true;
- }
- else
- {
- qprintf("0");
- return false;
- }
-}
-
-static bool cidr_print6(struct cidr *a)
-{
- char *p;
-
- if (!a || (a->family != AF_INET6))
- return NULL;
-
- if (!(p = (char *)inet_ntop(AF_INET6, &a->addr.v6, a->buf.v6, sizeof(a->buf.v6))))
- return false;
-
- if (printed)
- qprintf(" ");
-
- qprintf("%s", p);
-
- if (a->prefix < 128)
- qprintf("/%u", a->prefix);
-
- cidr_pop(a);
-
- return true;
-}
-
-
-static struct cidr * cidr_parse(const char *op, const char *s, int af_hint)
-{
- char *r;
- struct cidr *a;
-
- uint8_t i;
- uint32_t sum = strtoul(s, &r, 0);
-
- if ((r > s) && (*r == 0))
- {
- a = malloc(sizeof(struct cidr));
-
- if (!a)
- return NULL;
-
- if (af_hint == AF_INET)
- {
- a->family = AF_INET;
- a->prefix = sum;
- a->addr.v4.s_addr = htonl(sum);
- }
- else
- {
- a->family = AF_INET6;
- a->prefix = sum;
-
- for (i = 0; i <= 15; i++)
- {
- a->addr.v6.s6_addr[15-i] = sum % 256;
- sum >>= 8;
- }
- }
-
- return a;
- }
-
- if (strchr(s, ':'))
- a = cidr_parse6(s);
- else
- a = cidr_parse4(s);
-
- if (!a)
- return NULL;
-
- if (a->family != af_hint)
- {
- fprintf(stderr, "attempt to '%s' %s with %s address\n",
- op,
- (af_hint == AF_INET) ? "ipv4" : "ipv6",
- (af_hint != AF_INET) ? "ipv4" : "ipv6");
- exit(4);
- }
-
- return a;
-}
-
-static bool cidr_howmany(struct cidr *a, struct cidr *b)
-{
- if (printed)
- qprintf(" ");
-
- if (b->prefix < a->prefix)
- qprintf("0");
- else
- qprintf("%u", 1 << (b->prefix - a->prefix));
-
- return true;
-}
-
-static bool cidr_prefix(struct cidr *a, struct cidr *b)
-{
- a->prefix = b->prefix;
- return true;
-}
-
-static 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);
-}
--
2.20.1
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