Replace ClientFindServers with unified Client, use trust store directories

Replace the single-purpose ClientFindServers program with a unified Client
that supports three operations via CLI: find-servers, get-endpoints, and
read-time.  This simplifies the architecture by using one client binary with
a single config file instead of a monolithic program that did everything in
one run.

Split the ServerRegister config into separate server and client config files
so the LDS-registration credentials are isolated from the server's own
settings.  The discovery URL moves from config to a CLI argument.

Replace repeated trustList config entries with a single trustStore directory
path.  Each program now points to a directory under certs/trust/ containing
.der files, so adding or removing trust is a file-copy operation rather than
editing every config file.  Add loadTrustStore()/freeTrustStore() to
common.c and remove the now-unused configGetAll() from the config parser.

Simplify the test matrix from 6 to 4 cases (security and auth are
orthogonal, so the full 3x2 matrix is unnecessary).  Update run_test.sh to
invoke the new Client three times and use port-polling instead of sleep.

1 files changed, 15 insertions, 4 deletions

diff --git a/src/server_lds.c b/src/server_lds.c
index 2fe508f..a9a68bc 100644
--- a/src/server_lds.c
+++ b/src/server_lds.c
@@ -111,9 +111,20 @@ main (int argc, char *argv[])
       return EXIT_FAILURE;
     }
 
+  const char *trustStore = configRequire (&cfg, "trustStore", "ServerLDS");
+  if (!trustStore)
+    {
+      configFree (&cfg);
+      return EXIT_FAILURE;
+    }
+
   char **trustPaths = NULL;
   size_t trustSize = 0;
-  configGetAll (&cfg, "trustList", &trustPaths, &trustSize);
+  if (loadTrustStore (trustStore, &trustPaths, &trustSize) != 0)
+    {
+      configFree (&cfg);
+      return EXIT_FAILURE;
+    }
 
   UA_StatusCode retval;
   UA_Server *server
@@ -121,7 +132,7 @@ main (int argc, char *argv[])
                             trustPaths, trustSize, &retval);
   if (!server)
     {
-      free (trustPaths);
+      freeTrustStore (trustPaths, trustSize);
       configFree (&cfg);
       return EXIT_FAILURE;
     }
@@ -147,7 +158,7 @@ main (int argc, char *argv[])
       if (retval != UA_STATUSCODE_GOOD)
         {
           UA_Server_delete (server);
-          free (trustPaths);
+          freeTrustStore (trustPaths, trustSize);
           configFree (&cfg);
           return EXIT_FAILURE;
         }
@@ -164,7 +175,7 @@ main (int argc, char *argv[])
   retval = UA_Server_run (server, &running);
 
   UA_Server_delete (server);
-  free (trustPaths);
+  freeTrustStore (trustPaths, trustSize);
   configFree (&cfg);
   return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE;
 }