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[BUG] str2net() must not change the const char *

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str2net needs to put \0 in a const char *. Use strdup() for that.
This commit is contained in:
Willy Tarreau 2007-06-17 11:42:08 +02:00
parent c8d7c96b26
commit 8aeae4af23
1 changed files with 21 additions and 8 deletions
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29
src/standard.c
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@ -134,24 +134,30 @@ struct sockaddr_in *str2sa(char *str)
*/
int str2net(const char *str, struct in_addr *addr, struct in_addr *mask)
{
char *c;
__label__ out_free, out_err;
char *c, *s;
int ret_val;
unsigned long len;
s = strdup(str);
if (!s)
return 0;
memset(mask, 0, sizeof(*mask));
memset(addr, 0, sizeof(*addr));
if ((c = strrchr(str, '/')) != NULL) {
if ((c = strrchr(s, '/')) != NULL) {
*c++ = '\0';
/* c points to the mask */
if (strchr(c, '.') != NULL) { /* dotted notation */
if (!inet_pton(AF_INET, c, mask))
return 0;
goto out_err;
}
else { /* mask length */
char *err;
len = strtol(c, &err, 10);
if (!*c || (err && *err) || (unsigned)len > 32)
return 0;
goto out_err;
if (len)
mask->s_addr = htonl(~0UL << (32 - len));
else
@ -161,16 +167,23 @@ int str2net(const char *str, struct in_addr *addr, struct in_addr *mask)
else {
mask->s_addr = ~0U;
}
if (!inet_pton(AF_INET, str, addr)) {
if (!inet_pton(AF_INET, s, addr)) {
struct hostent *he;
if ((he = gethostbyname(str)) == NULL) {
return 0;
if ((he = gethostbyname(s)) == NULL) {
goto out_err;
}
else
*addr = *(struct in_addr *) *(he->h_addr_list);
}
return 1;
ret_val = 1;
out_free:
free(s);
return ret_val;
out_err:
ret_val = 0;
goto out_free;
}
/* will try to encode the string <string> replacing all characters tagged in