diff options
Diffstat (limited to 'src/check_prefix_boundary.c')
| -rw-r--r-- | src/check_prefix_boundary.c | 78 |
1 files changed, 56 insertions, 22 deletions
diff --git a/src/check_prefix_boundary.c b/src/check_prefix_boundary.c index b432c788..5fa80d50 100644 --- a/src/check_prefix_boundary.c +++ b/src/check_prefix_boundary.c @@ -1,4 +1,33 @@ -#include "check_ucast_static.h" +/* + * Check format of network prefix + */ +#include <stdio.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <arpa/inet.h> + +typedef struct +{ + uint8_t family; + uint8_t bytelen; + unsigned int plen; + uint32_t data[4]; +} inet_prefix; + +static void err(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + + exit(1); +} static void usage(void) { @@ -6,6 +35,32 @@ static void usage(void) exit(1); } +static void get_addr_1(inet_prefix *addr, const char *name, int family) +{ + memset(addr, 0, sizeof(*addr)); + + if (strchr(name, ':')) { + addr->family = AF_INET6; + addr->bytelen = 16; + if (family != AF_UNSPEC && family != AF_INET6) + err("IPV6 address not allowed\n"); + + if (inet_pton(AF_INET6, name, addr->data) <= 0) + err("Invalid IPV6 address: %s\n", name); + + return; + } + + addr->family = AF_INET; + addr->bytelen = 4; + if (family != AF_UNSPEC && family != AF_INET) + err("IPV4 address not allowed\n"); + + if (inet_pton(AF_INET, name, addr->data) <= 0) + err("Invalid IPV4 address: %s\n", name); + return; +} + static void get_prefix_1(inet_prefix *dst, char *arg, int family) { char *slash, *endp; @@ -77,27 +132,6 @@ int main(int argc, char **argv) inet_ntop(msk.family, msk.data, buf, sizeof buf)); } - /* - * Macros to check for Mcast are based on: - * - * Addr dst.data - * 224.1.2.2 ==> 0x030201e0 - * ff01:0203:: ==> 0x030201ff - * - */ - if (family == AF_INET) { - if (IS_MULTICAST(dst.data[0])) { - err("Invalid Prefix...Route cannot be Multicast\n"); - } - if (IS_BROADCAST(dst.data[0])) { - err("Invalid Prefix...Route cannot be Broadcast\n"); - } - } else if (family == AF_INET6) { - if (IS_IPV6_MULTICAST(dst.data[0])) { - err("Invalid Prefix...Route cannot be IPv6 Multicast\n"); - } - } - } return 0; |