made secret_t non-constant size and added params_t::query_string function

1. removed checking that secret_t is exactly 20 bytes, because its size is not
   so constant anymore.
2. added a query_string function that produces a query string suitable for use
   in GET and POST requests. I'm making use of it when performing direct
   request when establishing associations.

Signed-off-by: Michael Krelin <hacker@klever.net>

1 files changed, 13 insertions, 5 deletions

diff --git a/include/opkele/types.h b/include/opkele/types.h
index 520618d..ca07df5 100644
--- a/include/opkele/types.h
+++ b/include/opkele/types.h
@@ -42,12 +42,12 @@ namespace opkele {
 	     * xor the secret and hmac together and encode, using base64
-	     * @param key_sha1 pointer to the sha1 digest
+	     * @param key_d pointer to the message digest
 	     * @param rv reference to the return value
 	     */
-	    void enxor_to_base64(const unsigned char *key_sha1,string& rv) const;
+	    void enxor_to_base64(const unsigned char *key_d,string& rv) const;
 	    /**
-	     * decode base64-encoded secret and xor it with the sha1 digest
-	     * @param key_sha1 pointer to the message digest
+	     * decode base64-encoded secret and xor it with the message digest
+	     * @param key_d pointer to the message digest
 	     * @param b64 base64-encoded secret value
 	     */
-	    void enxor_from_base64(const unsigned char *key_sha1,const string& b64);
+	    void enxor_from_base64(const unsigned char *key_d,const string& b64);
 	    /**
@@ -163,2 +163,10 @@ namespace opkele {
 	    string append_query(const string& url,const char *prefix = "openid.") const;
+
+	    /**
+	     * make up a query string suitable for use in GET and POST
+	     * requests.
+	     * @param prefix string to prened to parameter names
+	     * @return query string
+	     */
+	    string query_string(const char *prefix = "openid.") const;
     };