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Compatiable network abbreviation support 

Handle 10/8 as 10.0.0.0/8 and check for bogus values like 256/8.
This is a comprimise between original iproute2 parsing and standard BSD
parsing of abbreviated IPV4 addresses.
This commit is contained in:
Stephen Hemminger 2008-10-14 15:02:16 -07:00
parent 750a405a5a
commit 94afda7529
1 changed files with 21 additions and 1 deletions
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22
lib/utils.c
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@ -246,6 +246,9 @@ int get_s8(__s8 *val, const char *arg, int base)
int get_addr_1(inet_prefix *addr, const char *name, int family)
{
unsigned long n;
char *endp;
memset(addr, 0, sizeof(*addr));
if (strcmp(name, "default") == 0 ||
@ -284,8 +287,25 @@ int get_addr_1(inet_prefix *addr, const char *name, int family)
addr->family = AF_INET;
if (family != AF_UNSPEC && family != AF_INET)
return -1;
if (inet_aton(name, addr->data) <= 0)
n = strtoul(name, &endp, 0);
if (n > 255)
return -1; /* bogus network value */
if (endp == name) /* not a number */
return -1;
/* compatable with older usage (ie 10/8 = 10.0.0.0/8) */
if (strchr(name, '.') == NULL) {
addr->data[0] = n;
addr->bytelen = 4;
addr->bitlen = -1;
return 0;
}
if (inet_aton(name, (struct in_addr *)addr->data) <= 0)
return -1;
addr->bytelen = 4;
addr->bitlen = -1;
return 0;