1 files changed, 66 insertions, 0 deletions

diff --git a/include/opkele/util.h b/include/opkele/util.h
index 80d8b03..2a7a859 100644
--- a/include/opkele/util.h
+++ b/include/opkele/util.h
@@ -10,12 +10,16 @@
 namespace opkele {
     using std::string;
     using std::vector;
 
     namespace util {
 
+        /**
+         * Convenience class encapsulating SSL BIGNUM object for the purpose of
+         * automatical freeing.
+         */
         class bignum_t {
             public:
                 BIGNUM *_bn;
 
                 bignum_t() : _bn(0) { }
                 bignum_t(BIGNUM *bn) : _bn(bn) { }
@@ -23,12 +27,16 @@ namespace opkele {
                 
                 bignum_t& operator=(BIGNUM *bn) { if(_bn) BN_free(_bn); _bn = bn; return *this; }
 
                 operator const BIGNUM*(void) const { return _bn; }
                 operator BIGNUM*(void) { return _bn; }
         };
+        /**
+         * Convenience clas encapsulating SSL DH object for the purpose of
+         * automatic freeing.
+         */
         class dh_t {
             public:
                 DH *_dh;
                 
                 dh_t() : _dh(0) { }
                 dh_t(DH *dh) : _dh(dh) { }
@@ -40,25 +48,83 @@ namespace opkele {
                 operator DH*(void) { return _dh; }
 
                 DH* operator->() { return _dh; }
                 const DH* operator->() const { return _dh; }
         };
 
+        /**
+         * Convert base64-encoded SSL BIGNUM to internal representation.
+         * @param b64 base64-encoded number
+         * @return SSL BIGNUM
+         * @throw failed_conversion in case of error
+         */
         BIGNUM *base64_to_bignum(const string& b64);
+        /**
+         * Convert decimal representation to SSL BIGNUM.
+         * @param dec decimal representation
+         * @return resulting BIGNUM
+         * @throw failed_conversion in case of error
+         */
         BIGNUM *dec_to_bignum(const string& dec);
+        /**
+         * Convert SSL BIGNUM data to base64 encoded string.
+         * @param bn BIGNUM
+         * @return base64encoded string
+         */
         string bignum_to_base64(const BIGNUM *bn);
 
+        /**
+         * Convert internal time representation to w3c format
+         * @param t internal representation
+         * @return w3c time
+         * @throw failed_conversion in case of error
+         */
         string time_to_w3c(time_t t);
+        /**
+         * Convert W3C time representation to  internal time_t
+         * @param w w3c representation
+         * @return converted time
+         * @throw failed_conversion in case of error
+         */
         time_t w3c_to_time(const string& w);
 
+        /**
+         * Encode string to the representation suitable for using in URL.
+         * @param str string to encode
+         * @return encoded string
+         * @throw failed_conversion in case of failure
+         */
         string url_encode(const string& str);
 
+        /**
+         * Convert number to string
+         * @param l number
+         * @return string representation
+         * @throw failed_conversion in case of failure
+         */
         string long_to_string(long l);
+        /**
+         * Convert string to number
+         * @param s string, containing the number
+         * @return the number
+         * @throw failed_conversion in case of failure
+         */
         long string_to_long(const string& s);
 
+        /**
+         * Encode binary data using base64.
+         * @param data pointer to binary data
+         * @param length length of data
+         * @return encoded data
+         */
         string encode_base64(const void *data,size_t length);
+        /**
+         * Decode binary data from base64 representation.
+         * @param data base64-encoded data
+         * @param rv container for decoded binary
+         */
         void decode_base64(const string& data,vector<unsigned char>& rv);
     }
 
 }
 
 #endif /* __OPKELE_UTIL_H */