generate html form hiddens from the openid message

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

2 files changed, 22 insertions, 0 deletions

diff --git a/include/opkele/types.h b/include/opkele/types.h
index 842a722..5d39a5c 100644
--- a/include/opkele/types.h
+++ b/include/opkele/types.h
@@ -143,16 +143,18 @@ namespace opkele {
 
 	    virtual void reset_fields();
 	    virtual void set_field(const string& n,const string& v);
 	    virtual void reset_field(const string& n);
 
 	    virtual void from_keyvalues(const string& kv);
 	    virtual void to_keyvalues(ostream& o) const;
 
+	    virtual void to_htmlhiddens(ostream& o) const;
+
 	    void add_to_signed(const string& fields);
 	    string find_ns(const string& uri,const char *pfx) const;
 	    string allocate_ns(const string& uri,const char *pfx);
     };
 
     class openid_message_t : public basic_openid_message, public map<string,string> {
 	public:
 	    openid_message_t() { }
diff --git a/lib/openid_message.cc b/lib/openid_message.cc
index 905ea95..fdb4b04 100644
--- a/lib/openid_message.cc
+++ b/lib/openid_message.cc
@@ -154,16 +154,36 @@ 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;
+
+	    __om_html_outputter(const basic_openid_message& om,ostream& os)
+		: om(om), os(os) { }
+
+	    result_type operator()(argument_type f) {
+		os <<
+		    "<input type=\"hidden\""
+		    " name=\"" << 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::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(",");