moved uri matching into separate procedure

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

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/util.cc b/lib/util.cc
index b7bc437..b85a377 100644
--- a/lib/util.cc
+++ b/lib/util.cc
@@ -5,6 +5,7 @@
 #include <vector>
 #include <string>
 #include <stack>
+#include <algorithm>
 #include <openssl/bio.h>
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
@@ -351,6 +352,35 @@ namespace opkele {
             return u;
         }
 
+        bool uri_matches_realm(const string& uri,const string& realm) {
+            string nrealm = opkele::util::rfc_3986_normalize_uri(realm);
+            string nu = opkele::util::rfc_3986_normalize_uri(uri);
+            string::size_type pr = nrealm.find("://");
+            string::size_type pu = nu.find("://");
+            assert(!(pr==string::npos || pu==string::npos));
+            pr += sizeof("://")-1;
+            pu += sizeof("://")-1;
+            if(!strncmp(nrealm.c_str()+pr,"*.",2)) {
+                pr = nrealm.find('.',pr);
+                pu = nu.find('.',pu);
+                assert(pr!=string::npos);
+                if(pu==string::npos)
+                    return false;
+                // TODO: check for overgeneralized realm
+            }
+            string::size_type lr = nrealm.length();
+            string::size_type lu = nu.length();
+            if( (lu-pu) < (lr-pr) )
+                return false;
+            pair<const char*,const char*> mp = mismatch(
+                    nrealm.c_str()+pr,nrealm.c_str()+lr,
+                    nu.c_str()+pu);
+            if( (*(mp.first-1))!='/'
+                    && !strchr("/?#",*mp.second) )
+                return false;
+            return true;
+        }
+
         string abi_demangle(const char *mn) {
 #ifndef HAVE_DEMANGLE
             return mn;