From: Jelte Jansen <jeltejan@NLnetLabs.nl>
Date: Thu, 18 Aug 2005 09:11:31 +0000 (+0000)
Subject: cast
X-Git-Tag: release-1.0.0~269
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=05e7d6959f6707671fa9447f4bccaedf3379fbc0;p=thirdparty%2Fldns.git

cast
---

diff --git a/str2host.c b/str2host.c
index 573b8aa4..c4c825bc 100644
--- a/str2host.c
+++ b/str2host.c
@@ -27,6 +27,60 @@
 #include <sys/param.h>
 #endif
 
+bool
+ldns_is_ipv4_addr(const char *str)
+{
+	int a, i;
+	const char *dot = str;
+
+	if (strlen(str) < 7 || strlen(str) > 16) {
+		return false;
+	}
+
+	for (i = 0; i < 3; i++) {
+		a = atoi(dot);
+		if (a < 0 || a > 255) {
+			return false;
+		}
+		dot = strchr(dot, '.');
+		if (!dot) {
+			return false;
+		}
+	}
+	a = atoi(dot);
+	if (a < 0 || a > 255) {
+		return false;
+	}
+
+	return true;
+}
+
+/* todo: check for more errors (like ffffff:f etc) */
+bool
+ldns_is_ipv6_addr(const char *str)
+{
+	int a;
+	size_t i;
+	const char *dot = str;
+
+	if (strlen(str) < 3 || strlen(str) > 40) {
+		return false;
+	}
+
+	for (i = 0; i < strlen(str); i++) {
+		if (str[i] != ':' &&
+		    ldns_hexdigit_to_int(str[i]) < 0) {
+			return false;
+		}
+	}
+	a = atoi(dot);
+	if (a < 0 || a > 255) {
+		return false;
+	}
+
+	return true;
+}
+
 ldns_status
 ldns_str2rdf_int16(ldns_rdf **rd, const char *shortstr)
 {