debuginfod: Handle "/" and report unrecognized operations

This doesn't change any functionality, but simply shows something a little
user friendlier when accessing the server "by hand" (in a browser).

Signed-off-by: Mark Wielaard <mark@klomp.org>

2 files changed, 24 insertions, 1 deletions

diff --git a/debuginfod/ChangeLog b/debuginfod/ChangeLog
index 34e07793..b3c81285 100644
--- a/debuginfod/ChangeLog
+++ b/debuginfod/ChangeLog
@@ -1,3 +1,8 @@
+2020-11-21  Mark Wielaard  <mark@klomp.org>
+
+	* debuginfod.cxx (handle_root): New function.
+	(handler_cb): Handle "/" and report url1 in webapi error.
+
 2020-11-11  Mark Wielaard  <mark@klomp.org>
 
 	* debuginfod-find.c (progressfn): Use clock_gettime to print Progress
diff --git a/debuginfod/debuginfod.cxx b/debuginfod/debuginfod.cxx
index 78e2a430..61c778b1 100644
--- a/debuginfod/debuginfod.cxx
+++ b/debuginfod/debuginfod.cxx
@@ -1799,6 +1799,19 @@ handle_metrics (off_t* size)
   return r;
 }
 
+static struct MHD_Response*
+handle_root (off_t* size)
+{
+  static string version = "debuginfod (" + string (PACKAGE_NAME) + ") "
+			  + string (PACKAGE_VERSION);
+  MHD_Response* r = MHD_create_response_from_buffer (version.size (),
+						     (void *) version.c_str (),
+						     MHD_RESPMEM_PERSISTENT);
+  *size = version.size ();
+  MHD_add_response_header (r, "Content-Type", "text/plain");
+  return r;
+}
+
 
 ////////////////////////////////////////////////////////////////////////
 
@@ -1876,8 +1889,13 @@ handler_cb (void * /*cls*/,
           inc_metric("http_requests_total", "type", "metrics");
           r = handle_metrics(& http_size);
         }
+      else if (url1 == "/")
+        {
+          inc_metric("http_requests_total", "type", "/");
+          r = handle_root(& http_size);
+        }
       else
-        throw reportable_exception("webapi error, unrecognized /operation");
+        throw reportable_exception("webapi error, unrecognized '" + url1 + "'");
 
       if (r == 0)
         throw reportable_exception("internal error, missing response");