3 files changed, 133 insertions, 3 deletions

diff --git a/include/Makefile.am b/include/Makefile.am
index 0385cfb..23c7e0d 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -10,8 +10,10 @@ nobase_include_HEADERS = \
         opkele/sreg.h \
         opkele/extension_chain.h \
         opkele/xconsumer.h \
-        opkele/xserver.h
+        opkele/xserver.h \
+        opkele/curl.h opkele/expat.h \
+        opkele/openid_service_resolver.h \
+        opkele/uris.h
 EXTRA_DIST = \
         opkele/data.h \
-        opkele/util.h \
-        opkele/curl.h opkele/expat.h
+        opkele/util.h
diff --git a/include/opkele/openid_service_resolver.h b/include/opkele/openid_service_resolver.h
new file mode 100644
index 0000000..64edd28
--- a/dev/null
+++ b/include/opkele/openid_service_resolver.h
@@ -0,0 +1,118 @@
+#ifndef __OPKELE_OPENID_SERVICE_RESOLVER_H
+#define __OPKELE_OPENID_SERVICE_RESOLVER_H
+
+#include <climits>
+#include <string>
+#include <list>
+#include <set>
+#include <map>
+#include <opkele/curl.h>
+#include <opkele/expat.h>
+
+namespace opkele {
+    using std::list;
+    using std::string;
+    using std::set;
+    using std::map;
+
+    struct openid_auth_SEP_t {
+            long priority;
+            set<string> xrd_Type;
+            string xrd_URI;
+            string openid_Delegate;
+
+            openid_auth_SEP_t() : priority(LONG_MAX) { }
+    };
+
+    struct openid_auth_info_t {
+        string canonical_id;
+        openid_auth_SEP_t auth_SEP;
+    };
+
+
+    class openid_service_resolver_t : public util::curl_t, public util::expat_t {
+        public:
+            string xri_proxy;
+
+            openid_service_resolver_t(const string& xp="");
+            ~openid_service_resolver_t() throw() { }
+
+            const openid_auth_info_t& resolve(const string& id);
+
+            enum state_t {
+                state_parse = 0,
+                state_stopping_head, state_stopping_body,
+                state_stopping_size
+            };
+            state_t state;
+
+            struct parser_node_t {
+                string element;
+                string content;
+                typedef map<string,string> attrs_t;
+                attrs_t attrs;
+                bool skip_text, skip_tags;
+                openid_auth_info_t auth_info;
+
+                parser_node_t(const XML_Char *n,const XML_Char **a)
+                    : skip_text(true), skip_tags(true)
+                {
+                    element = n;
+                    for(;*a;a+=2)
+                        attrs[a[0]] = a[1];
+                }
+
+            };
+
+            class parser_tree_t : public list<parser_node_t> {
+                public:
+                    const_reference top() const { return back(); }
+                    reference top()  { return back(); }
+
+                    const_reference parent() const {
+                        const_reverse_iterator rv = rbegin();
+                        return *(++rv); }
+                    reference parent() {
+                        reverse_iterator rv = rbegin();
+                        return *(++rv); }
+
+                    inline void pop() { pop_back(); }
+                    inline void push(const_reference e) { push_back(e); }
+
+                    void push(const XML_Char *n,const XML_Char **a) {
+                        parser_node_t nn(n,a);
+                        if(empty())
+                            nn.skip_text = nn.skip_tags = true;
+                        else{
+                            const_reference t = top();
+                            nn.skip_text = t.skip_text; nn.skip_tags = t.skip_tags;
+                        }
+                        push(nn);
+                    }
+            };
+            parser_tree_t tree;
+
+            void start_element(const XML_Char *n,const XML_Char **a);
+            void end_element(const XML_Char *n);
+            void character_data(const XML_Char *s,int l);
+
+            string xrds_location;
+            openid_auth_SEP_t html_SEP;
+            openid_auth_info_t auth_info;
+
+            void pop_tag();
+
+            size_t write(void *p,size_t s,size_t nm);
+
+            string http_content_type;
+
+            size_t header(void *p,size_t s,size_t nm);
+            
+            bool xri_mode;
+
+            void discover_service(const string& url,bool xri=false);
+    };
+
+}
+
+#endif /* __OPKELE_OPENID_SERVICE_RESOLVER_H */
diff --git a/include/opkele/uris.h b/include/opkele/uris.h
new file mode 100644
index 0000000..9a6a3cd
--- a/dev/null
+++ b/include/opkele/uris.h
@@ -0,0 +1,10 @@
+#ifndef __OPKELE_URIS_H
+#define __OPKELE_URIS_H
+
+#define NSURI_XRDS     "xri://$xrds"
+#define NSURI_XRD      "xri://$xrd*($v*2.0)"
+#define NSURI_OPENID10 "http://openid.net/xmlns/1.0"
+
+#define STURI_OPENID10 "http://openid.net/signon/1.0"
+
+#endif /* __OPKELE_URIS_H */