diff -r 23985cfb6b99 -r 12b38cca63d7 pidgin/pidgincredentialproviderstore.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pidgin/pidgincredentialproviderstore.c	Sun Jan 24 05:27:03 2021 -0600
@@ -0,0 +1,178 @@
+/*
+ * Pidgin - Internet Messenger
+ * Copyright (C) Pidgin Developers <devel@pidgin.im>
+ *
+ * Pidgin is the legal property of its developers, whose names are too numerous
+ * to list here.  Please refer to the COPYRIGHT file distributed with this
+ * source distribution.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <glib/gi18n-lib.h>
+
+#include "pidgin/pidgincredentialproviderstore.h"
+
+struct _PidginCredentialProviderStore {
+	GtkListStore parent;
+};
+
+/******************************************************************************
+ * Helpers
+ *****************************************************************************/
+static void
+pidgin_credential_provider_store_add(PidginCredentialProviderStore *store,
+                                     PurpleCredentialProvider *provider)
+{
+	GtkTreeIter iter;
+	const gchar *id = NULL, *name = NULL;
+
+	id = purple_credential_provider_get_id(provider);
+	name = purple_credential_provider_get_name(provider);
+
+	gtk_list_store_append(GTK_LIST_STORE(store), &iter);
+	gtk_list_store_set(
+		GTK_LIST_STORE(store),
+		&iter,
+		PIDGIN_CREDENTIAL_PROVIDER_STORE_COLUMN_ID, id,
+		PIDGIN_CREDENTIAL_PROVIDER_STORE_COLUMN_NAME, name,
+		-1
+	);
+}
+
+static void
+pidgin_credential_provider_store_add_helper(PurpleCredentialProvider *provider,
+                                            gpointer data)
+{
+	pidgin_credential_provider_store_add(PIDGIN_CREDENTIAL_PROVIDER_STORE(data),
+	                                     provider);
+}
+
+static void
+pidgin_credential_provider_store_add_providers(PidginCredentialProviderStore *store)
+{
+	PurpleCredentialManager *manager = NULL;
+
+	manager = purple_credential_manager_get_default();
+
+	purple_credential_manager_foreach_provider(manager,
+	                                           pidgin_credential_provider_store_add_helper,
+	                                           store);
+}
+
+static void
+pidgin_credential_provider_store_remove(PidginCredentialProviderStore *store,
+                                        PurpleCredentialProvider *provider)
+{
+	GtkTreeIter iter;
+	const gchar *id = NULL;
+
+	id = purple_credential_provider_get_id(provider);
+
+	if(gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) == FALSE) {
+		purple_debug_warning("credential-provider-store",
+		                     "asked to remove provider %s but the store is "
+		                     "empty",
+		                     id);
+		return;
+	}
+
+	/* walk through the store and look for the provider to remove */
+	do {
+		gchar *found = NULL;
+
+		gtk_tree_model_get(
+			GTK_TREE_MODEL(store),
+			&iter,
+			PIDGIN_CREDENTIAL_PROVIDER_STORE_COLUMN_ID, &found,
+			-1
+		);
+
+		if(purple_strequal(found, id)) {
+			g_free(found);
+
+			gtk_list_store_remove(GTK_LIST_STORE(store), &iter);
+
+			return;
+		}
+
+		g_free(found);
+	} while(gtk_tree_model_iter_next(GTK_TREE_MODEL(store), &iter));
+}
+
+/******************************************************************************
+ * Callbacks
+ *****************************************************************************/
+static void
+purple_credential_provider_store_registered_cb(PurpleCredentialManager *manager,
+                                               PurpleCredentialProvider *provider,
+                                               gpointer data)
+{
+	pidgin_credential_provider_store_add(PIDGIN_CREDENTIAL_PROVIDER_STORE(data),
+	                                     provider);
+}
+
+static void
+purple_credential_provider_store_unregistered_cb(PurpleCredentialManager *manager,
+                                                 PurpleCredentialProvider *provider,
+                                                 gpointer data)
+{
+	pidgin_credential_provider_store_remove(PIDGIN_CREDENTIAL_PROVIDER_STORE(data),
+	                                        provider);
+}
+
+/******************************************************************************
+ * GObject Implementation
+ *****************************************************************************/
+G_DEFINE_TYPE(PidginCredentialProviderStore, pidgin_credential_provider_store, GTK_TYPE_LIST_STORE)
+
+static void
+pidgin_credential_provider_store_init(PidginCredentialProviderStore *store) {
+	PurpleCredentialManager *manager = NULL;
+	GType types[PIDGIN_CREDENTIAL_PROVIDER_STORE_N_COLUMNS] = {
+		G_TYPE_STRING,
+		G_TYPE_STRING,
+	};
+
+	gtk_list_store_set_column_types(
+		GTK_LIST_STORE(store),
+		PIDGIN_CREDENTIAL_PROVIDER_STORE_N_COLUMNS,
+		types
+	);
+
+	/* add the known providers */
+	pidgin_credential_provider_store_add_providers(store);
+
+	manager = purple_credential_manager_get_default();
+
+	g_signal_connect(G_OBJECT(manager), "provider-registered",
+	                 G_CALLBACK(purple_credential_provider_store_registered_cb),
+	                 store);
+	g_signal_connect(G_OBJECT(manager), "provider-unregistered",
+	                 G_CALLBACK(purple_credential_provider_store_unregistered_cb),
+	                 store);
+}
+
+static void
+pidgin_credential_provider_store_class_init(PidginCredentialProviderStoreClass *klass) {
+}
+
+/******************************************************************************
+ * API
+ *****************************************************************************/
+GtkListStore *
+pidgin_credential_provider_store_new(void) {
+	return GTK_LIST_STORE(g_object_new(PIDGIN_TYPE_CREDENTIAL_PROVIDER_STORE,
+	                      NULL));
+}