backend: Add basic transform module sanity checks.

diff --git a/src/backend.c b/src/backend.c
index 637f7de99aaf3dbfc4696b6894c39f94095821d1..49ea9cd52088708e3a02a014f4bdb6fdc98953a6 100644 (file)
--- a/src/backend.c
+++ b/src/backend.c
@@ -306,6 +306,55 @@ static int sanity_check_all_output_modules(void)
        return ret;
 }
 
+/**
+ * Sanity-check all libsigrok transform modules.
+ *
+ * @retval SR_OK All modules are OK
+ * @retval SR_ERR One or more modules have issues.
+ */
+static int sanity_check_all_transform_modules(void)
+{
+       int i, errors, ret = SR_OK;
+       const struct sr_transform_module **transforms;
+       const char *d;
+
+       sr_spew("Sanity-checking all transform modules.");
+
+       transforms = sr_transform_list();
+       for (i = 0; transforms[i]; i++) {
+               errors = 0;
+
+               d = (transforms[i]->id) ? transforms[i]->id : "NULL";
+
+               if (!transforms[i]->id) {
+                       sr_err("No ID in module %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!transforms[i]->name) {
+                       sr_err("No name in module %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!transforms[i]->desc) {
+                       sr_err("No description in module '%s'.", d);
+                       errors++;
+               }
+               /* Note: options() is optional. */
+               /* Note: init() is optional. */
+               if (!transforms[i]->receive) {
+                       sr_err("No receive in module '%s'.", d);
+                       errors++;
+               }
+               /* Note: cleanup() is optional. */
+
+               if (errors == 0)
+                       continue;
+
+               ret = SR_ERR;
+       }
+
+       return ret;
+}
+
 /**
  * Initialize libsigrok.
  *
@@ -347,6 +396,11 @@ SR_API int sr_init(struct sr_context **ctx)
                return ret;
        }
 
+       if (sanity_check_all_transform_modules() < 0) {
+               sr_err("Internal transform module error(s), aborting.");
+               return ret;
+       }
+
        /* + 1 to handle when struct sr_context has no members. */
        context = g_malloc0(sizeof(struct sr_context) + 1);