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, 0 deletions

diff --git a/lib/params.cc b/lib/params.cc
index ea86d3a..7a572c1 100644
--- a/lib/params.cc
+++ b/lib/params.cc
@@ -78,31 +78,44 @@ namespace opkele {
 		0,&md_len);
 	sig = util::encode_base64(md,md_len);
     }
 
     string params_t::append_query(const string& url,const char *prefix) const {
 	string rv = url;
 	bool p = true;
 	if(rv.find('?')==string::npos) {
 	    rv += '?';
 	    p = false;
 	}
 	for(const_iterator i=begin();i!=end();++i) {
 	    if(p)
 		rv += '&';
 	    else
 		p = true;
 	    rv += prefix;
 	    rv += i->first;
 	    rv += '=';
 	    rv += util::url_encode(i->second);
 	}
 	return rv;
     }
 
+    string params_t::query_string(const char *prefix) const {
+	string rv;
+	for(const_iterator i=begin();i!=end();++i) {
+	    if(!rv.empty())
+		rv += '&';
+	    rv += prefix;
+	    rv += i->first;
+	    rv += '=';
+	    rv += util::url_encode(i->second);
+	}
+	return rv;
+    }
+
     ostream& operator << (ostream& o,const params_t& p) {
 	for(params_t::const_iterator i=p.begin();i!=p.end();++i)
 	    o << i->first << ':' << i->second << '\n';
 	return o;
     }
 
 }