allow to add prefix to generated htmlhiddens

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

1 files changed, 9 insertions, 5 deletions

diff --git a/lib/openid_message.cc b/lib/openid_message.cc
index 521ea85..588bd62 100644
--- a/lib/openid_message.cc
+++ b/lib/openid_message.cc
@@ -154,38 +154,42 @@ namespace opkele {
                 os << f << ':' << om.get_field(f) << '\n';
             }
     };
 
     void basic_openid_message::to_keyvalues(ostream& o) const {
         for_each(fields_begin(),fields_end(),__om_kv_outputter(*this,o));
     }
 
     struct __om_html_outputter : public unary_function<const string&,void> {
         public:
             const basic_openid_message& om;
             ostream& os;
+            const char *pfx;
 
-            __om_html_outputter(const basic_openid_message& m,ostream& s)
-                : om(m), os(s) { }
+            __om_html_outputter(const basic_openid_message& m,ostream& s,const char *p=0)
+                : om(m), os(s), pfx(p) { }
 
             result_type operator()(argument_type f) {
                 os <<
                     "<input type=\"hidden\""
-                    " name=\"" << util::attr_escape(f) << "\""
+                    " name=\"";
+                if(pfx)
+                    os << util::attr_escape(pfx);
+                os << util::attr_escape(f) << "\""
                     " value=\"" << util::attr_escape(om.get_field(f)) << "\" />";
             }
     };
 
-    void basic_openid_message::to_htmlhiddens(ostream& o) const {
-        for_each(fields_begin(),fields_end(),__om_html_outputter(*this,o));
+    void basic_openid_message::to_htmlhiddens(ostream& o,const char* pfx) const {
+        for_each(fields_begin(),fields_end(),__om_html_outputter(*this,o,pfx));
     }
 
     void basic_openid_message::add_to_signed(const string& fields) {
         string::size_type fnc = fields.find_first_not_of(",");
         if(fnc==string::npos)
             throw bad_input(OPKELE_CP_ "Trying to add nothing in particular to the list of signed fields");
         string signeds;
         try {
             signeds = get_field("signed");
             string::size_type lnc = signeds.find_last_not_of(",");
             if(lnc==string::npos)
                 signeds.assign(fields,fnc,fields.size()-fnc);