[PATCH 1/2] owipcalc: remove package
Nick
vincent at systemli.org
Fri Jan 22 06:49:56 EST 2021
Is it okay to push c-code into packages feed, if it is not patch
related? (never saw this)
On 1/22/21 10:51 AM, Adrian Schmutzler wrote:
> 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);
> -}
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