1 files changed, 64 insertions, 0 deletions
diff --git a/ucspi-tcp-0.88/ip6_fmt.c b/ucspi-tcp-0.88/ip6_fmt.c
new file mode 100644
index 0000000..d7c010a
--- /dev/null
+++ b/ucspi-tcp-0.88/ip6_fmt.c
@@ -0,0 +1,64 @@
+#include "fmt.h"
+#include "byte.h"
+#include "ip4.h"
+#include "ip6.h"
+
+unsigned int ip6_fmt(char *s,char ip[16])
+{
+  unsigned long len,temp, k, pos0=0,len0=0, pos1=0, compr=0;
+
+  for (k=0; k<16; k+=2) {
+    if (ip[k]==0 && ip[k+1]==0) {
+      if (!compr) {
+        compr=1;
+        pos1=k;
+      }
+      if (k==14) { k=16; goto last; }
+    } else if (compr) {
+    last:
+      if ((temp=k-pos1) > len0) {
+        len0=temp;
+        pos0=pos1;
+      }
+      compr=0;
+    }
+  }
+
+  for (len=0,k=0; k<16; k+=2) {
+    if (k==12 && ip6_isv4mapped(ip)) {
+      len += ip4_fmt(s,ip+12);
+      break;
+    }
+    if (pos0==k && len0) {
+      if (k==0) { ++len; if (s) *s++ = ':'; }
+      ++len; if (s) *s++ = ':';
+      k += len0-2;
+      continue;
+    }
+    temp = ((unsigned long) (unsigned char) ip[k] << 8) +
+            (unsigned long) (unsigned char) ip[k+1];
+    temp = fmt_xlong(s,temp); len += temp; if (s) s += temp;
+    if (k<14) { ++len; if (s) *s++ = ':'; }
+  }
+
+  return len;
+}
+
+static char tohex(char num) {
+  if (num<10)
+    return num+'0';
+  else if (num<16)
+    return num-10+'a';
+  else
+    return -1;
+}
+
+unsigned int ip6_fmt_flat(char *s,char ip[16])
+{
+  int i;
+  for (i=0; i<16; i++) {
+    *s++=tohex((unsigned char)ip[i] >> 4);
+    *s++=tohex((unsigned char)ip[i] & 15);
+  }
+  return 32;
+}