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, 0 insertions, 40 deletions

diff --git a/src/config.c b/src/config.c
index 163f601..2165821 100644
--- a/src/config.c
+++ b/src/config.c
@@ -200,46 +200,6 @@ configRequireInt (const Config *cfg, const char *key, const char *program)
 }
 
 void
-configGetAll (const Config *cfg, const char *key, char ***out, size_t *size)
-{
-  /* First pass: count matches. */
-  size_t count = 0;
-  for (size_t i = 0; i < cfg->count; i++)
-    {
-      if (strcmp (cfg->entries[i].key, key) == 0)
-        count++;
-    }
-
-  if (count == 0)
-    {
-      *out = NULL;
-      *size = 0;
-      return;
-    }
-
-  /* Second pass: collect pointers. */
-  char **arr = malloc (count * sizeof (char *));
-  if (!arr)
-    {
-      UA_LOG_ERROR (UA_Log_Stdout, UA_LOGCATEGORY_USERLAND,
-                    "Config: out of memory");
-      *out = NULL;
-      *size = 0;
-      return;
-    }
-
-  size_t idx = 0;
-  for (size_t i = 0; i < cfg->count; i++)
-    {
-      if (strcmp (cfg->entries[i].key, key) == 0)
-        arr[idx++] = cfg->entries[i].value;
-    }
-
-  *out = arr;
-  *size = count;
-}
-
-void
 configFree (Config *cfg)
 {
   for (size_t i = 0; i < cfg->count; i++)