This commit was generated by cvs2svn to compensate for changes in r1650,

[iproute2.git] / lib / dnet_pton.c

diff --git a/lib/dnet_pton.c b/lib/dnet_pton.c
new file mode 100644 (file)
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;
+}