Implement URI construction handling append='qxri' xrd:URI attribute.

This is the right thing to do and may come in handy assisting OPs in improving
UI.

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

2 files changed, 31 insertions, 8 deletions

diff --git a/include/opkele/discovery.h b/include/opkele/discovery.h
index ab4b9d9..677d7bb 100644
--- a/include/opkele/discovery.h
+++ b/include/opkele/discovery.h
@@ -34,9 +34,17 @@ namespace opkele {
 
         typedef priority_map<string> canonical_ids_t;
         typedef priority_map<string> local_ids_t;
         typedef set<string> types_t;
-        typedef priority_map<string> uris_t;
+        struct uri_t {
+            string uri;
+            string append;
+
+            uri_t() { }
+            uri_t(const string& u) : uri(u) { }
+            uri_t(const string& u,const string& a) : uri(u), append(a) { }
+        };
+        typedef priority_map<uri_t> uris_t;
 
         class service_t {
             public:
                 types_t types;
diff --git a/lib/discovery.cc b/lib/discovery.cc
index 93409f4..6e20654 100644
--- a/lib/discovery.cc
+++ b/lib/discovery.cc
@@ -58,8 +58,17 @@ namespace opkele {
                 return (sscanf(*a,"%ld",&rv)==1)?rv:-1;
             }
         return -1;
     }
+    /* TODO: ideally all attributes should be
+     * retrieved in one run */
+    static const char *element_attr(const XML_Char **a, const char *at) {
+        for(;*a;++a)
+            if(!strcasecmp(*(a++),at)) {
+                return *a;
+            }
+        return 0;
+    }
 
     class idigger_t : public util::curl_t, public util::expat_t {
         public:
             string xri_proxy;
@@ -117,10 +126,9 @@ namespace opkele {
                 idis.clear();
                 if(strchr(i_leaders,id[0])) {
                     /* TODO: further normalize xri identity? Like folding case
                      * or whatever... */
-                    rv = idis.normalized_id = id;
-                    idis.xri_identity = true;
+                    rv = id;
                     set<string> cids;
                     for(const struct service_type_t *st=service_types;
                             st<&service_types[sizeof(service_types)/sizeof(*service_types)];++st) {
                         idis.clear();
@@ -154,8 +162,9 @@ namespace opkele {
                                         ", while looking for SEP with type '"+st->uri+"'"
                                         " on canonical id", status_code);
                         }
                         idis.canonicalized_id = cid;
+                        idis.normalized_id = rv; idis.xri_identity = true;
                         queue_endpoints(oi,idis,st);
                     }
                 }else{
                     idis.xri_identity = false;
@@ -194,9 +203,8 @@ namespace opkele {
                 return rv;
             }
 
             void discover_at(idiscovery_t& idis,const string& url,int xm) {
-                DOUT_("Doing discovery at " << url);
                 CURLcode r = easy_setopt(CURLOPT_URL,url.c_str());
                 if(r)
                     throw exception_curl(OPKELE_CP_ "failed to set culry urlie",r);
 
@@ -389,9 +397,11 @@ namespace opkele {
                                 cdata_buf.clear();
                                 cdata = &cdata_buf;
                             }else if(is_qelement(n,NSURI_XRD "\tURI")) {
                                 assert(xrd); assert(xrd_service);
-                                cdata = &(xrd_service->uris.add(element_priority(a),string()));
+                                const char *append = element_attr(a,"append");
+                                xrd::uri_t& uri = xrd_service->uris.add(element_priority(a),xrd::uri_t("",append?append:""));
+                                cdata = &uri.uri;
                             }else if(is_qelement(n,NSURI_XRD "\tLocalID")
                                     || is_qelement(n,NSURI_OPENID10 "\tDelegate") ) {
                                 assert(xrd); assert(xrd_service);
                                 cdata = &(xrd_service->local_ids.add(element_priority(a),string()));
@@ -483,13 +493,13 @@ namespace opkele {
                             rel.assign(rels,ns,s-ns);
                             ns = s;
                         }
                         if(rel=="openid.server")
-                            html_openid1.uris.add(-1,href);
+                            html_openid1.uris.add(-1,xrd::uri_t(href));
                         else if(rel=="openid.delegate")
                             html_openid1.local_ids.add(-1,href);
                         else if(rel=="openid2.provider")
-                            html_openid2.uris.add(-1,href);
+                            html_openid2.uris.add(-1,xrd::uri_t(href));
                         else if(rel=="openid2.local_id")
                             html_openid2.local_ids.add(-1,href);
                     }
                 }else if(is_element(n,"body")) {
@@ -506,9 +516,14 @@ namespace opkele {
                         isvc!=id.xrd.services.end(); ++isvc) {
                     const xrd::service_t svc = isvc->second;
                     if(svc.types.find(st->uri)==svc.types.end()) continue;
                     for(xrd::uris_t::const_iterator iu=svc.uris.begin();iu!=svc.uris.end();++iu) {
-                        ep.uri = iu->second;
+                        ep.uri = iu->second.uri;
+                        if(id.xri_identity) {
+                            if(iu->second.append=="qxri") {
+                                ep.uri += id.normalized_id;
+                            } /* TODO: else handle other append attribute values */
+                        }
                         if(st->forceid) {
                             ep.local_id = ep.claimed_id = st->forceid;
                             *(oi++) = ep;
                         }else{