X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fdnet_pton.c;fp=lib%2Fdnet_pton.c;h=bd7727aea0fb6d396476c082b3e0bcfd9315afb0;hb=4f7d3057911ebc5df78113896cb02e1b4ffbfabe;hp=0000000000000000000000000000000000000000;hpb=8a59994861a17eb92c11553d88631757ee8e63c3;p=iproute2.git

diff --git a/lib/dnet_pton.c b/lib/dnet_pton.c
new file mode 100644
index 0000000..bd7727a
--- /dev/null
+++ b/lib/dnet_pton.c
@@ -0,0 +1,71 @@
+#include <errno.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#include "utils.h"
+
+static __inline__ u_int16_t dn_htons(u_int16_t addr)
+{
+        union {
+                u_int8_t byte[2];
+                u_int16_t word;
+        } u;
+
+        u.word = addr;
+        return ((u_int16_t)u.byte[0]) | (((u_int16_t)u.byte[1]) << 8);
+}
+
+
+static int dnet_num(const char *src, u_int16_t * dst)
+{
+	int rv = 0;
+	int tmp;
+	*dst = 0;
+
+	while ((tmp = *src++) != 0) {
+		tmp -= '0';
+		if ((tmp < 0) || (tmp > 9))
+			return rv;
+
+		rv++;
+		(*dst) *= 10;
+		(*dst) += tmp;
+	}
+
+	return rv;
+}
+
+static int dnet_pton1(const char *src, struct dn_naddr *dna)
+{
+	u_int16_t area = 0;
+	u_int16_t node = 0;
+	int pos;
+
+	pos = dnet_num(src, &area);
+	if ((pos == 0) || (area > 63) || (*(src + pos) != '.'))
+		return 0;
+	pos = dnet_num(src + pos + 1, &node);
+	if ((pos == 0) || (node > 1023))
+		return 0;
+	dna->a_len = 2;
+	*(u_int16_t *)dna->a_addr = dn_htons((area << 10) | node);
+
+	return 1;
+}
+
+int dnet_pton(int af, const char *src, void *addr)
+{
+	int err;
+
+	switch (af) {
+	case AF_DECnet:
+		errno = 0;
+		err = dnet_pton1(src, (struct dn_naddr *)addr);
+		break;
+	default:
+		errno = EAFNOSUPPORT;
+		err = -1;
+	}
+
+	return err;
+}