1 files changed, 64 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/alist_new.c b/contrib/ipfilter/lib/alist_new.c
new file mode 100644
index 0000000..72da866
--- /dev/null
+++ b/contrib/ipfilter/lib/alist_new.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2006 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id: alist_new.c,v 1.1.2.2 2006/08/25 22:43:21 darrenr Exp $
+ */
+
+#include "ipf.h"
+
+alist_t *     
+alist_new(int v, char *host)
+{
+	int a, b, c, d, bits;
+	char *slash;    
+	alist_t *al;  
+	u_int mask;     
+
+	al = calloc(1, sizeof(*al));
+	if (al == NULL) {
+		fprintf(stderr, "alist_new out of memory\n");
+		return NULL;
+	}
+
+	bits = -1;      
+	slash = strchr(host, '/');
+	if (slash != NULL) {
+		*slash = '\0';
+		bits = atoi(slash + 1);
+	}
+
+	a = b = c = d = -1;
+	sscanf(host, "%d.%d.%d.%d", &a, &b, &c, &d);
+
+	if (bits > 0 && bits < 33) {
+		mask = 0xffffffff << (32 - bits);
+	} else if (b == -1) {
+		mask = 0xff000000;
+		b = c = d = 0;  
+	} else if (c == -1) {
+		mask = 0xffff0000;
+		c = d = 0;
+	} else if (d == -1) {
+		mask = 0xffffff00;
+		d = 0;
+	} else {
+		mask = 0xffffffff;
+	}
+
+	if (*host == '!') {
+		al->al_not = 1;
+		host++;
+	}
+
+	if (gethost(host, &al->al_addr) == -1) {
+		*slash = '/';
+		fprintf(stderr, "Cannot parse hostname\n");
+		free(al);
+		return NULL;
+	}
+	al->al_mask = htonl(mask);
+	*slash = '/';
+	return al;
+}