コード例 #1
0
ファイル: ftype-ipv4.c プロジェクト: koyeen/wireshark
static gboolean
val_from_unparsed(fvalue_t *fv, const char *s, gboolean allow_partial_value _U_, LogFunc logfunc)
{
	guint32	addr;
	unsigned int nmask_bits;

	const char *has_slash;
	const char *net_str, *addr_str;
	fvalue_t *nmask_fvalue;

	/* Look for CIDR: Is there a single slash in the string? */
	has_slash = strchr(s, '/');
	if (has_slash) {
		/* Make a copy of the string up to but not including the
		 * slash; that's the address portion. */
		addr_str = ep_strndup(s, has_slash - s);
	}
	else {
		addr_str = s;
	}

	if (!get_host_ipaddr(addr_str, &addr)) {
		logfunc("\"%s\" is not a valid hostname or IPv4 address.",
		    addr_str);
		return FALSE;
	}

	ipv4_addr_set_net_order_addr(&(fv->value.ipv4), addr);

	/* If CIDR, get netmask bits. */
	if (has_slash) {
		/* Skip past the slash */
		net_str = has_slash + 1;

		/* XXX - this is inefficient */
		nmask_fvalue = fvalue_from_unparsed(FT_UINT32, net_str, FALSE, logfunc);
		if (!nmask_fvalue) {
			return FALSE;
		}
		nmask_bits = fvalue_get_uinteger(nmask_fvalue);
		FVALUE_FREE(nmask_fvalue);

		if (nmask_bits > 32) {
			logfunc("Netmask bits in a CIDR IPv4 address should be <= 32, not %u",
					nmask_bits);
			return FALSE;
		}
		ipv4_addr_set_netmask_bits(&fv->value.ipv4, nmask_bits);
	}
	else {
		/* Not CIDR; mask covers entire address. */
		ipv4_addr_set_netmask_bits(&(fv->value.ipv4), 32);
	}

	return TRUE;
}
コード例 #2
0
ファイル: ftype-ipv4.c プロジェクト: koyeen/wireshark
static void
set_uinteger(fvalue_t *fv, guint32 value)
{
	ipv4_addr_set_net_order_addr(&(fv->value.ipv4), value);
	ipv4_addr_set_netmask_bits(&(fv->value.ipv4), 32);
}
コード例 #3
0
ファイル: ftype-ipv4.c プロジェクト: flaub/HotFuzz
static gboolean
val_from_unparsed(fvalue_t *fv, char *s, gboolean allow_partial_value _U_, LogFunc logfunc)
{
	guint32	addr;
	unsigned int nmask_bits;

	char *has_slash, *s_copy = NULL;
	char *net_str, *addr_str;
	fvalue_t *nmask_fvalue;

	/* Look for CIDR: Is there a single slash in the string? */
	has_slash = strchr(s, '/');
	if (has_slash) {
		/* Make a copy of the string and use strtok() to
		 * get the address portion. */
		s_copy = ep_strdup(s);
		addr_str = strtok(s_copy, "/");

		/* I just checked for slash! I shouldn't get NULL here.
		 * Double check just in case. */
		if (!addr_str) {
			logfunc("Unexpected strtok() error parsing IP address: %s",
			    s_copy);
			return FALSE;
		}
	}
	else {
		addr_str = s;
	}

	if (!get_host_ipaddr(addr_str, &addr)) {
		logfunc("\"%s\" is not a valid hostname or IPv4 address.",
		    addr_str);
		return FALSE;
	}

	ipv4_addr_set_host_order_addr(&(fv->value.ipv4), addr);

	/* If CIDR, get netmask bits. */
	if (has_slash) {
		net_str = strtok(NULL, "/");
		/* I checked for slash! I shouldn't get NULL here.
		 * Double check just in case. */
		if (!net_str) {
			logfunc("Unexpected strtok() error parsing netmask: %s",
			    s_copy);
			return FALSE;
		}

		/* XXX - this is inefficient */
		nmask_fvalue = fvalue_from_unparsed(FT_UINT32, net_str, FALSE, logfunc);
		if (!nmask_fvalue) {
			return FALSE;
		}
		nmask_bits = fvalue_get_uinteger(nmask_fvalue);
		FVALUE_FREE(nmask_fvalue);

		if (nmask_bits > 32) {
			logfunc("Netmask bits in a CIDR IPv4 address should be <= 32, not %u",
					nmask_bits);
			return FALSE;
		}
		ipv4_addr_set_netmask_bits(&fv->value.ipv4, nmask_bits);
	}
	else {
		/* Not CIDR; mask covers entire address. */
		ipv4_addr_set_netmask_bits(&(fv->value.ipv4), 32);
	}

	return TRUE;
}