added missing ether_aton and ether_ntoa
Change-Id: I32ee448abde4d5693d393030ed77ddc6d2ad1dfc
diff --git a/libc/inet/ether_aton.c b/libc/inet/ether_aton.c
new file mode 100644
index 0000000..6540c07
--- /dev/null
+++ b/libc/inet/ether_aton.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <net/if_ether.h>
+#include <ctype.h>
+
+static inline int
+xdigit (char c) {
+ unsigned d;
+ d = (unsigned)(c-'0');
+ if (d < 10) return (int)d;
+ d = (unsigned)(c-'a');
+ if (d < 6) return (int)(10+d);
+ d = (unsigned)(c-'A');
+ if (d < 6) return (int)(10+d);
+ return -1;
+}
+
+/*
+ * Convert Ethernet address in the standard hex-digits-and-colons to binary
+ * representation.
+ * Re-entrant version (GNU extensions)
+ */
+struct ether_addr *
+ether_aton_r (const char *asc, struct ether_addr * addr)
+{
+ int i, val0, val1;
+ for (i = 0; i < ETHER_ADDR_LEN; ++i) {
+ val0 = xdigit(*asc);
+ asc++;
+ if (val0 < 0)
+ return NULL;
+
+ val1 = xdigit(*asc);
+ asc++;
+ if (val1 < 0)
+ return NULL;
+
+ addr->ether_addr_octet[i] = (u_int8_t)((val0 << 4) + val1);
+
+ if (i < ETHER_ADDR_LEN - 1) {
+ if (*asc != ':')
+ return NULL;
+ asc++;
+ }
+ }
+ if (*asc != '\0')
+ return NULL;
+ return addr;
+}
+
+/*
+ * Convert Ethernet address in the standard hex-digits-and-colons to binary
+ * representation.
+ */
+struct ether_addr *
+ether_aton (const char *asc)
+{
+ static struct ether_addr addr;
+ return ether_aton_r(asc, &addr);
+}