Correctly identify Git-over-HTTP operations

Git operations over HTTP should be classified as using
AccessPath.GIT and not WEB_UI. This ensures RefControl
will correctly test for Create, Push or Delete access
on a reference instead of Owner.

Change-Id: I57936929c0d12358f44bbf3959c0e11f12bc823b

gerrit-httpd/src/main/java/com/google/gerrit/httpd/CacheBasedWebSession.java

@@ -34,6 +34,8 @@ import com.google.inject.Module;
 import com.google.inject.Provider;
 import com.google.inject.servlet.RequestScoped;
 
+import org.eclipse.jgit.http.server.GitSmartHttpTools;
+
 import javax.servlet.http.Cookie;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -65,7 +67,7 @@ public final class CacheBasedWebSession implements WebSession {
   private final AuthConfig authConfig;
   private final Provider<AnonymousUser> anonymousProvider;
   private final IdentifiedUser.RequestFactory identified;
-  private AccessPath accessPath = AccessPath.WEB_UI;
+  private AccessPath accessPath;
   private Cookie outCookie;
   private AuthMethod authMethod;
 
@@ -85,6 +87,12 @@ public final class CacheBasedWebSession implements WebSession {
     this.anonymousProvider = anonymousProvider;
     this.identified = identified;
 
+    if (GitSmartHttpTools.isGitClient(request)) {
+      accessPath = AccessPath.GIT;
+    } else {
+      accessPath = AccessPath.WEB_UI;
+    }
+
     final String cookie = readCookie();
     if (cookie != null) {
       key = new Key(cookie);
@@ -161,11 +169,6 @@ public final class CacheBasedWebSession implements WebSession {
     authMethod = meth;
   }
 
-  /** Change the access path from the default of {@link AccessPath#WEB_UI}. */
-  public void setAccessPath(AccessPath path) {
-    accessPath = path;
-  }
-
   /** Set the user account for this current request only. */
   public void setUserAccountId(Account.Id id, AuthMethod method) {
     key = new Key("id:" + id);

gerrit-httpd/src/main/java/com/google/gerrit/httpd/GitOverHttpServlet.java

@@ -18,7 +18,6 @@ import com.google.common.cache.Cache;
 import com.google.gerrit.common.data.Capable;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.server.ReviewDb;
-import com.google.gerrit.server.AccessPath;
 import com.google.gerrit.server.AnonymousUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.cache.CacheModule;
@@ -190,7 +189,6 @@ public class GitOverHttpServlet extends GitServlet {
       UploadPack up = new UploadPack(repo);
       up.setPackConfig(config.getPackConfig());
       up.setTimeout(config.getTimeout());
-      session.get().setAccessPath(AccessPath.GIT);
       return up;
     }
   }
@@ -266,7 +264,6 @@ public class GitOverHttpServlet extends GitServlet {
       rp.setTimeout(config.getTimeout());
       rp.setMaxObjectSizeLimit(config.getMaxObjectSizeLimit());
       req.setAttribute(ATT_RC, rc);
-      session.get().setAccessPath(AccessPath.GIT);
       return rp;
     }
   }

gerrit-httpd/src/main/java/com/google/gerrit/httpd/WebSession.java

@@ -16,7 +16,6 @@ package com.google.gerrit.httpd;
 
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountExternalId;
-import com.google.gerrit.server.AccessPath;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.account.AuthMethod;
 import com.google.gerrit.server.account.AuthResult;
@@ -36,9 +35,6 @@ public interface WebSession {
 
   public void login(AuthResult res, AuthMethod meth, boolean rememberMe);
 
-  /** Change the access path from the default of {@link AccessPath#WEB_UI}. */
-  public void setAccessPath(AccessPath path);
-
   /** Set the user account for this current request only. */
   public void setUserAccountId(Account.Id id, AuthMethod method);