1 files changed, 92 insertions, 0 deletions

diff --git a/include/opkele/util-internal.h b/include/opkele/util-internal.h
new file mode 100644
index 0000000..ec091ce
--- a/dev/null
+++ b/include/opkele/util-internal.h
@@ -0,0 +1,92 @@
+#ifndef __OPKELE_UTIL_INTERNAL_H
+#define __OPKELE_UTIL_INTERNAL_H
+
+#include <openssl/bn.h>
+#include <openssl/dh.h>
+
+namespace opkele {
+    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) { }
+                ~bignum_t() throw() { if(_bn) BN_free(_bn); }
+                
+                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) { }
+                ~dh_t() throw() { if(_dh) DH_free(_dh); }
+
+                dh_t& operator=(DH *dh) { if(_dh) DH_free(_dh); _dh = dh; return *this; }
+
+                operator const DH*(void) const { return _dh; }
+                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);
+
+        string abi_demangle(const char* mn);
+
+        class change_mode_message_proxy : public basic_openid_message {
+            public:
+                const basic_openid_message& x;
+                const string& mode;
+
+                change_mode_message_proxy(const basic_openid_message& xx,const string& m) : x(xx), mode(m) { }
+
+                bool has_field(const string& n) const { return x.has_field(n); }
+                const string& get_field(const string& n) const {
+                    return (n=="mode")?mode:x.get_field(n); }
+                bool has_ns(const string& uri) const {return x.has_ns(uri); }
+                string get_ns(const string& uri) const { return x.get_ns(uri); }
+                fields_iterator fields_begin() const {
+                    return x.fields_begin(); }
+                fields_iterator fields_end() const {
+                    return x.fields_end(); }
+        };
+
+    }
+}
+
+#endif /* __OPKELE_UTIL_INTERNAL_H */