Move all util functions that need openssl into crypto.c; make non-openssl functions that util needs into util. Now openssl can be separated.

svn:r2628

1 files changed, 10 insertions, 53 deletions

diff --git a/src/common/crypto.c b/src/common/crypto.c
index 4fe2ae0e8..e63a92c99 100644
--- a/src/common/crypto.c
+++ b/src/common/crypto.c
@@ -1470,6 +1470,16 @@ int crypto_pseudo_rand_int(unsigned int max) {
   }
 }
 
+/** Return a randomly chosen element of sl; or NULL if sl is empty.
+ */
+void *smartlist_choose(const smartlist_t *sl) {
+  size_t len;
+  len = smartlist_len(sl);
+  if(len)
+    return smartlist_get(sl,crypto_pseudo_rand_int(len));
+  return NULL; /* no elements to choose from */
+}
+
 /** Base-64 encode <b>srclen</b> bytes of data from <b>src</b>.  Write
  * the result into <b>dest</b>, if it will fit within <b>destlen</b>
  * bytes.  Return the number of bytes written on success; -1 if
@@ -1540,59 +1550,6 @@ base32_encode(char *dest, size_t destlen, const char *src, size_t srclen)
   dest[i] = '\0';
 }
 
-void base16_encode(char *dest, size_t destlen, const char *src, size_t srclen)
-{
-  const char *end;
-  char *cp;
-
-  tor_assert(destlen >= srclen*2+1);
-
-  cp = dest;
-  end = src+srclen;
-  while (src<end) {
-    sprintf(cp,"%02X",*(const uint8_t*)src);
-    ++src;
-    cp += 2;
-  }
-  *cp = '\0';
-}
-
-static const char HEX_DIGITS[] = "0123456789ABCDEFabcdef";
-
-static INLINE int hex_decode_digit(char c)
-{
-  const char *cp;
-  int n;
-  cp = strchr(HEX_DIGITS, c);
-  if (!cp)
-    return -1;
-  n = cp-HEX_DIGITS;
-  if (n<=15)
-    return n; /* digit or uppercase */
-  else
-    return n-6; /* lowercase */
-}
-
-int base16_decode(char *dest, size_t destlen, const char *src, size_t srclen)
-{
-  const char *end;
-  int v1,v2;
-  if ((srclen % 2) != 0)
-    return -1;
-  if (destlen < srclen/2)
-    return -1;
-  end = src+srclen;
-  while (src<end) {
-    v1 = hex_decode_digit(*src);
-    v2 = hex_decode_digit(*(src+1));
-    if(v1<0||v2<0)
-      return -1;
-    *(uint8_t*)dest = (v1<<4)|v2;
-    ++dest;
-    src+=2;
-  }
-  return 0;
-}
 
 /*
   Local Variables: