Initial revision

1 files changed, 97 insertions, 0 deletions

diff --git a/mdk-stage1/dietlibc/libcruft/inet_pton.c b/mdk-stage1/dietlibc/libcruft/inet_pton.c
new file mode 100644
index 000000000..d5c17509c
--- /dev/null
+++ b/mdk-stage1/dietlibc/libcruft/inet_pton.c
@@ -0,0 +1,97 @@
+#include <stdlib.h>
+#include <arpa/inet.h>
+#include <errno.h>
+
+static unsigned int scan_ip6(const char *s,char ip[16])
+{
+  unsigned int i;
+  unsigned int len=0;
+  unsigned long u;
+
+  char suffix[16];
+  int prefixlen=0;
+  int suffixlen=0;
+
+  for (i=0; i<16; i++) ip[i]=0;
+
+  for (;;) {
+    if (*s == ':') {
+      len++;
+      if (s[1] == ':') {	/* Found "::", skip to part 2 */
+	s+=2;
+	len++;
+	break;
+      }
+      s++;
+    }
+    {
+      char *tmp;
+      u=strtol(s,&tmp,16);
+      i=tmp-s;
+    }
+
+    if (!i) return 0;
+    if (prefixlen==12 && s[i]=='.') {
+      /* the last 4 bytes may be written as IPv4 address */
+      if (inet_aton(s,(struct in_addr*)(ip+12)))
+	return i+len;
+      else
+	return 0;
+    }
+    ip[prefixlen++] = (u >> 8);
+    ip[prefixlen++] = (u & 255);
+    s += i; len += i;
+    if (prefixlen==16)
+      return len;
+  }
+
+/* part 2, after "::" */
+  for (;;) {
+    if (*s == ':') {
+      if (suffixlen==0)
+	break;
+      s++;
+      len++;
+    } else if (suffixlen!=0)
+      break;
+    {
+      char *tmp;
+      u=strtol(s,&tmp,16);
+      i=tmp-s;
+    }
+    if (!i) {
+      len--;
+      break;
+    }
+    if (suffixlen+prefixlen<=12 && s[i]=='.') {
+      if (inet_aton(s,(struct in_addr*)(suffix+suffixlen))) {
+	suffixlen+=4;
+	len+=strlen(s);
+	break;
+      } else
+	prefixlen=12-suffixlen;	/* make end-of-loop test true */
+    }
+    suffix[suffixlen++] = (u >> 8);
+    suffix[suffixlen++] = (u & 255);
+    s += i; len += i;
+    if (prefixlen+suffixlen==16)
+      break;
+  }
+  for (i=0; i<suffixlen; i++)
+    ip[16-suffixlen+i] = suffix[i];
+  return len;
+}
+
+int inet_pton(int AF, const char *CP, void *BUF) {
+  if (AF==AF_INET) {
+    if (!inet_aton(CP,(struct in_addr*)BUF))
+      return 0;
+  } else if (AF==AF_INET6) {
+    if (CP[scan_ip6(CP,BUF)])
+      return 0;
+  } else {
+    errno=EAFNOSUPPORT;
+    return -1;
+  }
+  return 1;
+}