the whole library rewritten

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

1 files changed, 69 insertions, 2 deletions

diff --git a/lib/util.cc b/lib/util.cc
index a9b9bed..54d6535 100644
--- a/lib/util.cc
+++ b/lib/util.cc
@@ -7,10 +7,16 @@
 #include <stack>
 #include <openssl/bio.h>
 #include <openssl/evp.h>
+#include <openssl/hmac.h>
 #include <curl/curl.h>
 #include "opkele/util.h"
 #include "opkele/exception.h"
 
+#include <config.h>
+#ifdef HAVE_DEMANGLE
+# include <cxxabi.h>
+#endif
+
 namespace opkele {
     using namespace std;
 
@@ -205,8 +211,7 @@ namespace opkele {
              else if(rv=="https:")
                  s = true;
              else{
-                 /* TODO: support more schemes.
-                  * e.g. xri. How do we normalize
+                 /* TODO: support more schemes.  e.g. xri. How do we normalize
                   * xri?
                   */
                  rv.append(uri,colon+1,ul-colon-1);
@@ -311,6 +316,68 @@ namespace opkele {
              return rv;
          }
 
+        string& strip_uri_fragment_part(string& u) {
+            string::size_type q = u.find('?'), f = u.find('#');
+            if(q==string::npos) {
+                if(f!=string::npos)
+                    u.erase(f);
+            }else{
+                if(f!=string::npos) {
+                    if(f<q)
+                        u.erase(f,q-f);
+                    else
+                        u.erase(f);
+                }
+            }
+            return u;
+        }
+
+        string abi_demangle(const char *mn) {
+#ifndef HAVE_DEMANGLE
+            return mn;
+#else /* !HAVE_DEMANGLE */
+            int dstat;
+            char *demangled = abi::__cxa_demangle(mn,0,0,&dstat);
+            if(dstat)
+                return mn;
+            string rv = demangled;
+            free(demangled);
+            return rv;
+#endif /* !HAVE_DEMANGLE */
+        }
+
+        string base64_signature(const assoc_t& assoc,const basic_openid_message& om) {
+            const string& slist = om.get_field("signed");
+            string kv;
+            string::size_type p=0;
+            while(true) {
+                string::size_type co = slist.find(',',p);
+                string f = (co==string::npos)
+                    ?slist.substr(p):slist.substr(p,co-p);
+                kv += f;
+                kv += ':';
+                kv += om.get_field(f);
+                kv += '\n';
+                if(co==string::npos) break;
+                p = co+1;
+            }
+            const secret_t& secret = assoc->secret();
+            const EVP_MD *evpmd;
+            const string& at = assoc->assoc_type();
+            if(at=="HMAC-SHA256")
+                evpmd = EVP_sha256();
+            else if(at=="HMAC-SHA1")
+                evpmd = EVP_sha1();
+            else
+                throw unsupported(OPKELE_CP_ "unknown association type");
+            unsigned int md_len = 0;
+            unsigned char *md = HMAC(evpmd,
+                    &(secret.front()),secret.size(),
+                    (const unsigned char*)kv.data(),kv.length(),
+                    0,&md_len);
+            return encode_base64(md,md_len);
+        }
+
     }
 
 }