static int start(void *d) { plugin_data_t *data = d; cp_extension_t **exts; exts = cp_get_extensions_info(data->ctx, "symuser.strings", NULL, NULL); if (exts != NULL && exts[0] != NULL) { const char *symname; symname = cp_lookup_cfg_value(exts[0]->configuration, "@string-symbol"); if (symname != NULL) { data->str = cp_resolve_symbol(data->ctx, exts[0]->plugin->identifier, symname, NULL); if (data->str == NULL) { cp_log(data->ctx, CP_LOG_ERROR, "Could not resolve symbol specified by extension."); } } else { cp_log(data->ctx, CP_LOG_ERROR, "No string-symbol attribute present in extension."); } } else { cp_log(data->ctx, CP_LOG_ERROR, "No extensions available."); } if (exts != NULL) { cp_release_info(data->ctx, exts); } if (data->str == NULL) { return CP_ERR_RUNTIME; } return cp_define_symbol(data->ctx, "used_string", (void *) data->str); }
void plugincallbacks(void) { cp_context_t *ctx; cp_status_t status; cp_plugin_info_t *plugin; int errors; cbc_counters_t *counters; ctx = init_context(CP_LOG_ERROR, &errors); cp_set_context_args(ctx, argv); check((plugin = cp_load_plugin_descriptor(ctx, "tmp/install/plugins/callbackcounter", &status)) != NULL && status == CP_OK); check(cp_install_plugin(ctx, plugin) == CP_OK); cp_release_info(ctx, plugin); // Start plug-in implicitly by resolving a symbol check((counters = cp_resolve_symbol(ctx, "callbackcounter", "cbc_counters", &status)) != NULL && status == CP_OK); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 0); check(counters->listener == 1); check(counters->run == 0); check(counters->stop == 0); check(counters->destroy == 0); check(counters->context_arg_0 != NULL && strcmp(counters->context_arg_0, argv[0]) == 0); // Cause warning check(cp_start_plugin(ctx, "nonexisting") == CP_ERR_UNKNOWN); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 1); check(counters->listener == 1); check(counters->run == 0); check(counters->stop == 0); check(counters->destroy == 0); // Run run function once check(cp_run_plugins_step(ctx)); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 1); check(counters->listener == 1); check(counters->run == 1); check(counters->stop == 0); check(counters->destroy == 0); // Run run function until no more work to be done (run = 3) cp_run_plugins(ctx); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 1); check(counters->listener == 1); check(counters->run == 3); check(counters->stop == 0); check(counters->destroy == 0); /* * Normally symbols must not be accessed after they have been released. * We still access counters here because we know that the plug-in * implementation does not free the counter data. */ cp_release_symbol(ctx, counters); // Stop plug-in check(cp_stop_plugin(ctx, "callbackcounter") == CP_OK); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 1); check(counters->listener == 2); check(counters->run == 3); check(counters->stop == 1); // for now 1 but might be 0 in future (delay destroy) check(counters->destroy == 0 || counters->destroy == 1); // Uninstall plugin check(cp_uninstall_plugin(ctx, "callbackcounter") == CP_OK); check(counters->create == 1); check(counters->start == 1); check(counters->logger == 1); check(counters->listener == 2); check(counters->run == 3); check(counters->stop == 1); check(counters->destroy == 1); cp_destroy(); check(errors == 0); /* Free the counter data that was intentionally leaked by the plug-in */ free(counters); }