[gnunet] 07/40: NEWS: Added command to execute a script.

[gnunet]

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martin-schanzenbach pushed a commit to branch master
in repository gnunet.

commit 40a5a650d3b61aca9474692416adeba7272e61b3
Author: t3sserakt <t3ss@posteo.de>
AuthorDate: Fri Jul 14 16:59:30 2023 +0200

    NEWS: Added command to execute a script.
---
 src/include/gnunet_testing_ng_lib.h            | 206 ++++++++++++++++++++++-
 src/testing/testing_api_cmd_exec_bash_script.c | 217 +++++++++++++++++++++++++
 2 files changed, 422 insertions(+), 1 deletion(-)

diff --git a/src/include/gnunet_testing_ng_lib.h 
b/src/include/gnunet_testing_ng_lib.h
index 77e9bd74a..98ba65b59 100644
--- a/src/include/gnunet_testing_ng_lib.h
+++ b/src/include/gnunet_testing_ng_lib.h
@@ -519,6 +519,20 @@ struct GNUNET_TESTING_Timer
   unsigned int num_retries;
 };
 
+/**
+ * Command to execute a script synchronously.
+ *
+ * @param label Label of the command.
+ * @param script The name of the script.
+ * @param script_argv The arguments of the script. 
+*/
+const struct GNUNET_TESTING_Command
+GNUNET_TESTING_cmd_exec_bash_script (const char *label,
+                                     const char *script,
+                                     char *const script_argv[],
+                                     int argc,
+                                     GNUNET_ChildCompletedCallback cb);
+
 
 /**
  * Retrieve peer identity from the test system with the unique node id.
@@ -603,6 +617,188 @@ GNUNET_TESTING_get_trait (const struct 
GNUNET_TESTING_Trait *traits,
 /* ****** Specific traits supported by this component ******* */
 
 
+typedef void *
+(*GNUNET_TESTING_notify_connect_cb) (struct GNUNET_TESTING_Interpreter *is,
+                                       const struct GNUNET_PeerIdentity *peer);
+
+
+/**
+ * Struct to store information needed in callbacks.
+ *
+ */
+struct ConnectPeersState
+{
+  /**
+   * Context for our asynchronous completion.
+   */
+  struct GNUNET_TESTING_AsyncContext ac;
+
+  GNUNET_TESTING_notify_connect_cb notify_connect;
+
+  /**
+   * The testing system of this node.
+   */
+  const struct GNUNET_TESTING_System *tl_system;
+
+  // Label of the cmd which started the test system.
+  const char *create_label;
+
+  /**
+   * Number globally identifying the node.
+   *
+   */
+  uint32_t num;
+
+  /**
+   * Label of the cmd to start a peer.
+   *
+   */
+  const char *start_peer_label;
+
+  /**
+   * The topology of the test setup.
+   */
+  struct GNUNET_TESTING_NetjailTopology *topology;
+
+  /**
+   * Connections to other peers.
+   */
+  struct GNUNET_TESTING_NodeConnection *node_connections_head;
+
+  struct GNUNET_TESTING_Interpreter *is;
+
+  /**
+   * Number of connections.
+   */
+  unsigned int con_num;
+
+  /**
+   * Number of additional connects this cmd will wait for not triggered by 
this cmd.
+   */
+  unsigned int additional_connects;
+
+  /**
+ * Number of connections we already have a notification for.
+ */
+  unsigned int con_num_notified;
+
+  /**
+   * Number of additional connects this cmd will wait for not triggered by 
this cmd we already have a notification for.
+   */
+  unsigned int additional_connects_notified;
+
+  /**
+   * Flag indicating, whether the command is waiting for peers to connect that 
are configured to connect.
+   */
+  unsigned int wait_for_connect;
+};
+
+
+struct GNUNET_TESTING_StartPeerState
+{
+  /**
+   * Context for our asynchronous completion.
+   */
+  struct GNUNET_TESTING_AsyncContext ac;
+
+  /**
+   * The ip of a node.
+   */
+  char *node_ip;
+
+  /**
+   * Receive callback
+   */
+  struct GNUNET_MQ_MessageHandler *handlers;
+
+  /**
+   * GNUnet configuration file used to start a peer.
+   */
+  char *cfgname;
+
+  /**
+   * Peer's configuration
+   */
+  struct GNUNET_CONFIGURATION_Handle *cfg;
+
+  /**
+   * struct GNUNET_TESTING_Peer returned by GNUNET_TESTING_peer_configure.
+   */
+  struct GNUNET_TESTING_Peer *peer;
+
+  /**
+   * Peer identity
+   */
+  struct GNUNET_PeerIdentity id;
+
+  /**
+   * Peer's transport service handle
+   */
+  struct GNUNET_TRANSPORT_CoreHandle *th;
+
+  /**
+   * Application handle
+   */
+  struct GNUNET_TRANSPORT_ApplicationHandle *ah;
+
+  /**
+   * Peer's PEERSTORE Handle
+   */
+  struct GNUNET_PEERSTORE_Handle *ph;
+
+  /**
+   * Hello get task
+   */
+  struct GNUNET_SCHEDULER_Task *rh_task;
+
+  /**
+   * Peer's transport get hello handle to retrieve peer's HELLO message
+   */
+  struct GNUNET_PEERSTORE_IterateContext *pic;
+
+  /**
+   * Hello
+   */
+  char *hello;
+
+  /**
+   * Hello size
+   */
+  size_t hello_size;
+
+  /**
+   * The label of the command which was started by calling 
GNUNET_TESTING_cmd_system_create.
+   */
+  char *system_label;
+
+  /**
+   * An unique number to identify the peer
+   */
+  unsigned int no;
+
+  /**
+   * A map with struct GNUNET_MQ_Handle values for each peer this peer
+   * is connected to.
+   */
+  struct GNUNET_CONTAINER_MultiShortmap *connected_peers_map;
+
+  /**
+   * Test setup for this peer.
+   */
+  const struct GNUNET_TESTING_System *tl_system;
+
+  /**
+   * Callback which is called on neighbour connect events.
+   */
+  GNUNET_TESTING_notify_connect_cb notify_connect;
+
+  /**
+   * Flag indicating, if udp broadcast should be switched on.
+   */
+  enum GNUNET_GenericReturnValue broadcast;
+};
+
+
 /**
  * Create headers for a trait with name @a name for
  * statically allocated data of type @a type.
@@ -697,7 +893,15 @@ GNUNET_TESTING_get_trait (const struct 
GNUNET_TESTING_Trait *traits,
  */
 #define GNUNET_TESTING_SIMPLE_TRAITS(op) \
   op (batch_cmds, struct GNUNET_TESTING_Command *) \
-  op (process, struct GNUNET_OS_Process *)
+  op (process, struct GNUNET_OS_Process *) \
+  op (peer_id, const struct GNUNET_PeerIdentity) \
+  op (connected_peers_map, const struct GNUNET_CONTAINER_MultiShortmap) \
+  op (hello_size, const size_t) \
+  op (hello, const char) \
+  op (application_handle, const struct GNUNET_TRANSPORT_ApplicationHandle) \
+  op (connect_peer_state, const struct ConnectPeersState) \
+  op (state, const struct GNUNET_TESTING_StartPeerState) \
+  op (broadcast, const enum GNUNET_GenericReturnValue)
 
 
 /**
diff --git a/src/testing/testing_api_cmd_exec_bash_script.c 
b/src/testing/testing_api_cmd_exec_bash_script.c
new file mode 100644
index 000000000..5b9f5cbbb
--- /dev/null
+++ b/src/testing/testing_api_cmd_exec_bash_script.c
@@ -0,0 +1,217 @@
+/*
+      This file is part of GNUnet
+      Copyright (C) 2023 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_api_cmd_local_test_prepared.c
+ * @brief cmd to block the interpreter loop until all peers started.
+ * @author t3sserakt
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_testing_ng_lib.h"
+
+#define LOG(kind, ...) GNUNET_log (kind, __VA_ARGS__)
+
+struct BashScriptState
+{
+  /**
+   * Context for our asynchronous completion.
+   */
+  struct GNUNET_TESTING_AsyncContext ac;
+
+  /**
+   * Callback handed over to the command, which should 
+   * be called upon death or completion of the script.
+   */
+  GNUNET_ChildCompletedCallback cb;
+
+  // Child Wait handle
+  struct GNUNET_ChildWaitHandle *cwh;
+
+   /**
+   * The process id of the script.
+   */
+  struct GNUNET_OS_Process *start_proc;
+
+  /**
+   * Script this cmd will execute.
+   */
+  const char *script;
+
+  
+  /**
+   * Arguments for the script
+   */
+  char **script_argv;
+  
+  /** 
+   * Size of script_argv.
+   */
+  int argc;
+};
+
+/**
+ * The cleanup function of this cmd frees resources the cmd allocated.
+ *
+ */
+static void
+exec_bash_script_cleanup (void *cls)
+{
+  struct BashScriptState *bss = cls;
+
+  if (NULL != bss->cwh)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Cancel child\n");
+    GNUNET_wait_child_cancel (bss->cwh);
+    bss->cwh = NULL;
+  }
+  if (NULL != bss->start_proc)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Kill process\n");
+    GNUNET_assert (0 ==
+                   GNUNET_OS_process_kill (bss->start_proc,
+                                           SIGKILL));
+    GNUNET_assert (GNUNET_OK ==
+                   GNUNET_OS_process_wait (bss->start_proc));
+    GNUNET_OS_process_destroy (bss->start_proc);
+    bss->start_proc = NULL;
+  }
+  GNUNET_free (bss);
+}
+
+/**
+ * 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 BashScriptState *bss = cls;
+
+  GNUNET_OS_process_destroy (bss->start_proc);
+  bss->start_proc = NULL;
+  bss->cwh = NULL;
+  if (0 == exit_code)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Child succeeded!\n",
+                exit_code);
+    GNUNET_TESTING_async_finish (&bss->ac);
+  }
+  else
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Child failed with error %lu!\n",
+                exit_code);
+    GNUNET_TESTING_async_fail (&bss->ac);
+  }
+  bss->cb (cls, type, exit_code);
+}
+
+/**
+ * Run method of the command created by the interpreter to wait for another
+ * command to finish.
+ *
+ */
+static void
+exec_bash_script_run (void *cls,
+            struct GNUNET_TESTING_Interpreter *is)
+{
+  struct BashScriptState *bss = cls;
+  enum GNUNET_GenericReturnValue helper_check;
+  char *argv[bss->argc + 2];
+  
+  char *data_dir;
+  char *script_name;
+
+  data_dir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_DATADIR);
+  GNUNET_asprintf (&script_name, "%s%s", data_dir, bss->script);
+
+  helper_check = GNUNET_OS_check_helper_binary (
+    script_name,
+    GNUNET_YES,
+    NULL);
+
+  LOG (GNUNET_ERROR_TYPE_DEBUG,
+       "script_name %s\n",
+       script_name);
+
+  if (GNUNET_NO == helper_check)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "No SUID for %s!\n",
+                script_name);
+    GNUNET_TESTING_interpreter_fail (is);
+    return;
+  }
+  if (GNUNET_SYSERR == helper_check)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "%s not found!\n",
+                script_name);
+    GNUNET_TESTING_interpreter_fail (is);
+    return;
+  }
+  argv[0] = script_name;
+  if (NULL != bss->script_argv)
+  {
+    for (int i = 0; i < bss->argc;i++)
+      argv[i + 1] = bss->script_argv[i];
+  }
+  argv[bss->argc] = NULL;
+  
+  bss->start_proc = GNUNET_OS_start_process_vap (GNUNET_OS_INHERIT_STD_ERR,
+                                     NULL,
+                                     NULL,
+                                     NULL,
+                                     script_name,
+                                     argv);
+  bss->cwh = GNUNET_wait_child (bss->start_proc,
+                               &child_completed_callback,
+                               bss);
+  GNUNET_break (NULL != bss->cwh);
+}
+
+const struct GNUNET_TESTING_Command
+GNUNET_TESTING_cmd_exec_bash_script (const char *label,
+                                     const char *script,
+                                     char *const script_argv[],
+                                    int argc,
+                                    GNUNET_ChildCompletedCallback cb)
+{
+  struct BashScriptState *bss;
+
+  bss = GNUNET_new (struct BashScriptState);
+  bss->script = script;
+  bss->script_argv = script_argv;
+  bss->argc = argc;
+  bss->cb = cb;
+
+  return GNUNET_TESTING_command_new (bss,
+                                    label,
+                                     &exec_bash_script_run,
+                                     &exec_bash_script_cleanup,
+                                     NULL,
+                                     &bss->ac);
+}

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