1 files changed, 200 insertions, 0 deletions

diff --git a/src/service/testing/testing_api_cmd_netjail_stop.c b/src/service/testing/testing_api_cmd_netjail_stop.c
new file mode 100644
index 000000000..cc05617f7
--- /dev/null
+++ b/src/service/testing/testing_api_cmd_netjail_stop.c
@@ -0,0 +1,200 @@
+/*
+      This file is part of GNUnet
+      Copyright (C) 2021 GNUnet e.V.
+
+      GNUnet is free software: you can redistribute it and/or modify it
+      under the terms of the GNU Affero General Public License as published
+      by the Free Software Foundation, either version 3 of the License,
+      or (at your option) any later version.
+
+      GNUnet 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
+      Affero General Public License for more details.
+
+      You should have received a copy of the GNU Affero General Public License
+      along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file testing/testing_api_cmd_netjail_stop.c
+ * @brief Command to stop the netjail script.
+ * @author t3sserakt
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_testing_ng_lib.h"
+#include "gnunet_testing_plugin.h"
+#include "gnunet_testing_barrier.h"
+#include "gnunet_testing_netjail_lib.h"
+
+
+#define NETJAIL_STOP_SCRIPT "netjail_stop.sh"
+
+/**
+ * Struct to hold information for callbacks.
+ *
+ */
+struct NetJailState
+{
+  /**
+   * Context for our asynchronous completion.
+   */
+  struct GNUNET_TESTING_AsyncContext ac;
+
+  // Child Wait handle
+  struct GNUNET_ChildWaitHandle *cwh;
+
+  /**
+   * Configuration file for the test topology.
+   */
+  char *topology_config;
+
+  /**
+   * The process id of the start script.
+   */
+  struct GNUNET_OS_Process *stop_proc;
+
+  /**
+   * Shall we read the topology from file, or from a string.
+   */
+  unsigned int *read_file;
+
+};
+
+
+/**
+ * The cleanup function of this cmd frees resources the cmd allocated.
+ *
+ */
+static void
+netjail_stop_cleanup (void *cls)
+{
+  struct NetJailState *ns = cls;
+
+  if (NULL != ns->cwh)
+  {
+    GNUNET_wait_child_cancel (ns->cwh);
+    ns->cwh = NULL;
+  }
+  if (NULL != ns->stop_proc)
+  {
+    GNUNET_assert (0 ==
+                   GNUNET_OS_process_kill (ns->stop_proc,
+                                           SIGKILL));
+    GNUNET_assert (GNUNET_OK ==
+                   GNUNET_OS_process_wait (ns->stop_proc));
+    GNUNET_OS_process_destroy (ns->stop_proc);
+    ns->stop_proc = NULL;
+  }
+  GNUNET_free (ns);
+}
+
+
+/**
+ * Callback which will be called if the setup script finished.
+ *
+ */
+static void
+child_completed_callback (void *cls,
+                          enum GNUNET_OS_ProcessStatusType type,
+                          long unsigned int exit_code)
+{
+  struct NetJailState *ns = cls;
+
+  ns->cwh = NULL;
+  GNUNET_OS_process_destroy (ns->stop_proc);
+  ns->stop_proc = NULL;
+  if (0 == exit_code)
+  {
+    GNUNET_TESTING_async_finish (&ns->ac);
+  }
+  else
+  {
+    GNUNET_TESTING_async_fail (&ns->ac);
+  }
+}
+
+
+/**
+* The run method starts the script which deletes the network namespaces.
+*
+* @param cls closure.
+* @param is interpreter state.
+*/
+static void
+netjail_stop_run (void *cls,
+                  struct GNUNET_TESTING_Interpreter *is)
+{
+  struct NetJailState *ns = cls;
+  char *pid;
+  char *data_dir;
+  char *script_name;
+  char *read_file;
+
+
+  data_dir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_DATADIR);
+  GNUNET_asprintf (&script_name, "%s%s", data_dir, NETJAIL_STOP_SCRIPT);
+  GNUNET_asprintf (&read_file, "%u", *(ns->read_file));
+  unsigned int helper_check = GNUNET_OS_check_helper_binary (
+    script_name,
+    GNUNET_YES,
+    NULL);
+
+  if (GNUNET_NO == helper_check)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "No SUID for %s!\n",
+                script_name);
+    GNUNET_TESTING_interpreter_fail (is);
+  }
+  else if (GNUNET_NO == helper_check)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "%s not found!\n",
+                script_name);
+    GNUNET_TESTING_interpreter_fail (is);
+  }
+
+  GNUNET_asprintf (&pid,
+                   "%u",
+                   getpid ());
+  {
+    char *const script_argv[] = {script_name,
+                                 ns->topology_config,
+                                 pid,
+                                 read_file,
+                                 NULL};
+    ns->stop_proc = GNUNET_OS_start_process_vap (GNUNET_OS_INHERIT_STD_ERR,
+                                                 NULL,
+                                                 NULL,
+                                                 NULL,
+                                                 script_name,
+                                                 script_argv);
+  }
+  ns->cwh = GNUNET_wait_child (ns->stop_proc,
+                               &child_completed_callback,
+                               ns);
+  GNUNET_break (NULL != ns->cwh);
+  GNUNET_free (read_file);
+  GNUNET_free (pid);
+}
+
+
+struct GNUNET_TESTING_Command
+GNUNET_TESTING_cmd_netjail_stop (const char *label,
+                                 char *topology_config,
+                                 unsigned int *read_file)
+{
+  struct NetJailState *ns;
+
+  ns = GNUNET_new (struct NetJailState);
+  ns->topology_config = topology_config;
+  ns->read_file = read_file;
+  return GNUNET_TESTING_command_new (ns, label,
+                                     &netjail_stop_run,
+                                     &netjail_stop_cleanup,
+                                     NULL, &ns->ac);
+}