/*
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* Copyright (c) 2017 Petr Vorel <pvorel@suse.cz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <arpa/inet.h>
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#include <errno.h>
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#define MAX_IPV4_PREFIX 32
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#define MAX_IPV6_PREFIX 128
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#define tst_res_comment(...) { \
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fprintf(stderr, "# "); \
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tst_res(__VA_ARGS__); } \
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#define tst_brk_comment(...) { \
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fprintf(stderr, "# "); \
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tst_brk(TCONF, __VA_ARGS__); } \
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static inline void print_svar(const char *name, const char *val)
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{
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if (name && val)
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printf("export %s=\"%s\"\n", name, val);
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}
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static inline void print_svar_change(const char *name, const char *val)
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{
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if (name && val)
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printf("export %s=\"${%s:-%s}\"\n", name, name, val);
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}
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/*
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* Function bit_count is from ipcalc project, ipcalc.c.
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*/
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static int bit_count(uint32_t i)
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{
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int c = 0;
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unsigned int seen_one = 0;
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while (i > 0) {
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if (i & 1) {
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seen_one = 1;
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c++;
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} else {
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if (seen_one)
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return -1;
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}
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i >>= 1;
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}
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return c;
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}
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/*
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* Function mask2prefix is from ipcalc project, ipcalc.c.
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*/
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static int mask2prefix(struct in_addr mask)
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{
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return bit_count(ntohl(mask.s_addr));
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}
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/*
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* Function ipv4_mask_to_int is from ipcalc project, ipcalc.c.
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*/
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static int ipv4_mask_to_int(const char *prefix)
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{
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int ret;
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struct in_addr in;
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ret = inet_pton(AF_INET, prefix, &in);
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if (ret == 0)
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return -1;
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return mask2prefix(in);
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}
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/*
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* Function safe_atoi is from ipcalc project, ipcalc.c.
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*/
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static int safe_atoi(const char *s, int *ret_i)
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{
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char *x = NULL;
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long l;
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errno = 0;
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l = strtol(s, &x, 0);
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if (!x || x == s || *x || errno)
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return errno > 0 ? -errno : -EINVAL;
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if ((long)(int)l != l)
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return -ERANGE;
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*ret_i = (int)l;
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return 0;
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}
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/*
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* Function get_prefix use code from ipcalc project, str_to_prefix/ipcalc.c.
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*/
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static int get_prefix(const char *ip_str, int is_ipv6)
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{
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char *prefix_str = NULL;
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int prefix = -1, r;
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prefix_str = strchr(ip_str, '/');
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if (!prefix_str)
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return -1;
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*(prefix_str++) = '\0';
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if (!is_ipv6 && strchr(prefix_str, '.'))
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prefix = ipv4_mask_to_int(prefix_str);
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else {
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r = safe_atoi(prefix_str, &prefix);
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if (r != 0)
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tst_brk_comment("conversion error: '%s' is not integer",
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prefix_str);
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}
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if (prefix < 0 || ((is_ipv6 && prefix > MAX_IPV6_PREFIX) ||
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(!is_ipv6 && prefix > MAX_IPV4_PREFIX)))
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tst_brk_comment("bad %s prefix: %s", is_ipv6 ? "IPv6" : "IPv4",
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prefix_str);
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return prefix;
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}
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static void get_in_addr(const char *ip_str, struct in_addr *ip)
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{
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if (inet_pton(AF_INET, ip_str, ip) <= 0)
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tst_brk_comment("bad IPv4 address: '%s'", ip_str);
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}
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static void get_in6_addr(const char *ip_str, struct in6_addr *ip6)
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{
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if (inet_pton(AF_INET6, ip_str, ip6) <= 0)
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tst_brk_comment("bad IPv6 address: '%s'", ip_str);
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}
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