88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
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#include "parse.h"
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#include "util.h"
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int atoi(const char *nptr);
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#define IS_IP_VALID_CHAR(x) ( ((x) >= '0' && (x) <= '9' ) || \
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((x) >= 'a' && (x) <= 'f') || \
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((x) >= 'A' && (x) <= 'F' ) || \
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(x) == ':' || (x) == '.' \
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)
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int parse_ip_to_sockaddr(struct sockaddr* out, char* src)
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{
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char temp[64];
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struct sockaddr_in *v4 = (struct sockaddr_in *) out;
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struct sockaddr_in6 *v6 = (struct sockaddr_in6 *) out;
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/* allow user to start with [ and end with any other invalid char */
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{
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int i=0, j=0;
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if (src[i] == '[')
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i++;
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for (; i<64 && IS_IP_VALID_CHAR(src[i]); i++)
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temp[j++] = src[i];
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temp[j] = 0;
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}
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if (temp[0] == '0' && temp[1] == '\0') {
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v4->sin_family = AF_INET;
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v4->sin_addr.s_addr = INADDR_ANY;
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return 1;
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}
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if (inet_pton(AF_INET, temp, &v4->sin_addr) == 1) {
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out->sa_family = AF_INET;
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return 1;
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}
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if (inet_pton(AF_INET6, temp, &v6->sin6_addr) == 1) {
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out->sa_family = AF_INET6;
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return 1;
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}
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return 0;
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}
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int parse_acl(struct ip_and_mask *out[], int max, char **entries)
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{
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int i;
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if (max == 0) {
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*out = NULL;
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return 0;
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}
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else {
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*out = xmalloc(max * sizeof(struct ip_and_mask));
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debug("acl alloc: %p", *out);
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}
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for (i = 0; i < max; i++) {
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# define MAX_MASK_BITS (outentry->ip.family == AF_INET ? 32 : 128)
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int j;
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struct ip_and_mask* outentry = *out+i;
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if (parse_ip_to_sockaddr(&outentry->ip.generic, entries[i]) == 0)
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return i;
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for (j=0; entries[i][j] && entries[i][j] != '/'; j++)
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;
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if (entries[i][j] == '/') {
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outentry->mask = atoi(entries[i]+j+1);
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if (outentry->mask < 1 || outentry->mask > MAX_MASK_BITS)
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return i;
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}
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else
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outentry->mask = MAX_MASK_BITS;
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# undef MAX_MASK_BITS
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debug("acl ptr[%d]: %p %d",i, outentry, outentry->mask);
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}
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for (i=0; i < max; i++) {
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struct ip_and_mask* entry = *out+i;
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debug("acl entry %d @ %p has mask %d", i, entry, entry->mask);
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}
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return max;
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}
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