new testcase to test delayed ATS service startup

5 files changed, 615 insertions, 0 deletions

diff --git a/src/ats/Makefile.am b/src/ats/Makefile.am
index c6e7c186d..7f91060eb 100644
--- a/src/ats/Makefile.am
+++ b/src/ats/Makefile.am
@@ -117,7 +117,9 @@ TESTING_TESTS = \
  test_ats_api_scheduling_destroy_address_twice \
  test_ats_api_scheduling_add_session \
  test_ats_api_scheduling_destroy_session \
+ test_ats_api_delayed_service_scheduling_add_address \
  test_ats_api_performance_list_all_addresses \
+ test_ats_api_delayed_service_performance_list_all_addresses \
  test_ats_api_performance_list_peer_addresses \
  test_ats_api_performance_list_all_addresses_active \
  test_ats_api_performance_monitor \
@@ -173,6 +175,15 @@ test_ats_api_scheduling_add_address_LDADD = \
   libgnunetats.la \
   $(top_builddir)/src/statistics/libgnunetstatistics.la
 
+test_ats_api_delayed_service_scheduling_add_address_SOURCES = \
+ test_ats_api_delayed_service_scheduling_add_address.c \
+ test_ats_api_common.c test_ats_api_common.h
+test_ats_api_delayed_service_scheduling_add_address_LDADD = \
+  $(top_builddir)/src/util/libgnunetutil.la \
+  $(top_builddir)/src/testing/libgnunettesting.la \
+  libgnunetats.la \
+  $(top_builddir)/src/statistics/libgnunetstatistics.la
+
 test_ats_api_scheduling_add_address_inbound_SOURCES = \
  test_ats_api_scheduling_add_address_inbound.c \
  test_ats_api_common.c test_ats_api_common.h
@@ -235,6 +246,15 @@ test_ats_api_performance_list_all_addresses_LDADD = \
   $(top_builddir)/src/hello/libgnunethello.la \
   libgnunetats.la \
         $(top_builddir)/src/statistics/libgnunetstatistics.la
+        
+test_ats_api_delayed_service_performance_list_all_addresses_SOURCES = \
+ test_ats_api_delayed_service_performance_list_all_addresses.c
+test_ats_api_delayed_service_performance_list_all_addresses_LDADD = \
+  $(top_builddir)/src/util/libgnunetutil.la \
+  $(top_builddir)/src/testing/libgnunettesting.la \
+  $(top_builddir)/src/hello/libgnunethello.la \
+  libgnunetats.la \
+        $(top_builddir)/src/statistics/libgnunetstatistics.la   
 
 test_ats_api_performance_list_peer_addresses_SOURCES = \
  test_ats_api_performance_list_peer_addresses.c
@@ -500,7 +520,9 @@ test_ats_solver_preferences_ril_LDADD = \
 
 EXTRA_DIST = \
   ats.h \
+  test_delay \
   test_ats_api.conf \
+  test_ats_api_delayed.conf \
   test_ats_mlp.conf \
   test_ats_solver_default.conf \
   test_ats_solver_proportional.conf \
diff --git a/src/ats/test_ats_api_delayed.conf b/src/ats/test_ats_api_delayed.conf
new file mode 100644
index 000000000..ab645d802
--- /dev/null
+++ b/src/ats/test_ats_api_delayed.conf
@@ -0,0 +1,36 @@
+@INLINE@ ../../contrib/no_forcestart.conf
+
+[PATHS]
+GNUNET_TEST_HOME = /tmp/test-ats-api-scheduling/
+
+[ats]
+PREFIX = ./test_delay -t 10 --
+# Enable MLP mode (default: NO)
+#MODE = RIL
+MODE = MLP
+# Network specific inbound/outbound quotas
+# UNSPECIFIED
+UNSPECIFIED_QUOTA_IN = 64 KiB
+UNSPECIFIED_QUOTA_OUT = 64 KiB
+# LOOPBACK
+LOOPBACK_QUOTA_IN = unlimited
+LOOPBACK_QUOTA_OUT = unlimited
+# LAN
+LAN_QUOTA_IN = unlimited
+LAN_QUOTA_OUT = unlimited
+# WAN
+WAN_QUOTA_IN = 64 KiB
+WAN_QUOTA_OUT = 64 KiB
+# WLAN
+WLAN_QUOTA_IN = 512
+WLAN_QUOTA_OUT = 512
+
+# ATS extended options
+DUMP_MLP = NO
+DUMP_SOLUTION = NO
+DUMP_OVERWRITE = NO
+DUMP_MIN_PEERS = 0
+DUMP_MIN_ADDRS = 0
+DUMP_OVERWRITE = NO
+ATS_MIN_INTERVAL = 15000
+ATS_EXEC_INTERVAL = 30000
diff --git a/src/ats/test_ats_api_delayed_service_performance_list_all_addresses.c b/src/ats/test_ats_api_delayed_service_performance_list_all_addresses.c
new file mode 100644
index 000000000..69507e71a
--- /dev/null
+++ b/src/ats/test_ats_api_delayed_service_performance_list_all_addresses.c
@@ -0,0 +1,305 @@
+/*
+ This file is part of GNUnet.
+ (C) 2010,2011 Christian Grothoff (and other contributing authors)
+
+ GNUnet 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 3, 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING.  If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
+/**
+ * @file ats/test_ats_api_delayed_service_performance_list_all_addresses.c
+ * @brief test performance API's address listing feature with a delayed service startup
+ * @author Christian Grothoff
+ * @author Matthias Wachs
+ */
+#include "platform.h"
+#include "gnunet_ats_service.h"
+#include "gnunet_testing_lib.h"
+#include "ats.h"
+
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)
+
+static struct GNUNET_SCHEDULER_Task * die_task;
+
+/**
+ * Statistics handle
+ */
+struct GNUNET_STATISTICS_Handle *stats;
+
+/**
+ * Configuration handle
+ */
+struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * ATS scheduling handle
+ */
+static struct GNUNET_ATS_SchedulingHandle *sched_ats;
+
+/**
+ * ATS performance handle
+ */
+static struct GNUNET_ATS_PerformanceHandle *perf_ats;
+
+struct GNUNET_ATS_AddressListHandle* phal;
+
+static int ret;
+
+struct Address
+{
+  char *plugin;
+  size_t plugin_len;
+
+  void *addr;
+  size_t addr_len;
+
+  struct GNUNET_ATS_Information *ats;
+  int ats_count;
+
+  void *session;
+};
+
+struct PeerContext
+{
+  struct GNUNET_PeerIdentity id;
+
+  struct Address *addr;
+};
+
+static struct PeerContext p[2];
+
+static struct Address p0_addresses[2];
+static struct Address p1_addresses[2];
+
+struct GNUNET_HELLO_Address p0_ha[2];
+struct GNUNET_HELLO_Address p1_ha[2];
+struct GNUNET_HELLO_Address *s_ha[2];
+
+static void
+end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+static void
+end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
+static void
+ats_perf_cb (void *cls,
+            const struct GNUNET_HELLO_Address *address,
+            int address_active,
+            struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+            struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+            const struct GNUNET_ATS_Information *ats,
+            uint32_t ats_count)
+{
+  static int counter = 0;
+
+  if (NULL == address)
+  {
+    phal = 0;
+    if (4 == counter)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Done!\n");
+      GNUNET_SCHEDULER_add_now (end, NULL);
+    }
+    else
+    {
+      GNUNET_break (0);
+      GNUNET_SCHEDULER_add_now (end_badly, NULL);
+    }
+    return;
+  }
+  counter ++;
+}
+
+
+static int
+stat_cb(void *cls, const char *subsystem,
+        const char *name, uint64_t value,
+        int is_persistent)
+{
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "ATS statistics: `%s' `%s' %llu\n",
+      subsystem,name, value);
+  if (4 == value)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+        "All addresses added, connecting to performance\n");
+    if (NULL == (perf_ats = GNUNET_ATS_performance_init (cfg, NULL, NULL)))
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+          "Failed to connect to performance API\n");
+      GNUNET_SCHEDULER_add_now (end_badly, NULL);
+    }
+    phal = GNUNET_ATS_performance_list_addresses (perf_ats, NULL, GNUNET_YES, &ats_perf_cb, NULL);
+  }
+  return GNUNET_OK;
+}
+
+static void
+address_suggest_cb (void *cls,
+                    const struct GNUNET_PeerIdentity *peer,
+                    const struct GNUNET_HELLO_Address *address,
+                    struct Session *session,
+                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+                    const struct GNUNET_ATS_Information *atsi,
+                    uint32_t ats_count)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Did not expect suggestion callback!\n");
+  GNUNET_SCHEDULER_add_now (&end_badly, NULL);
+  return;
+}
+
+
+static void
+end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  die_task = NULL;
+  end ( NULL, NULL);
+  ret = GNUNET_SYSERR;
+}
+
+static void
+end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Shutting down\n");
+  if (die_task != NULL )
+  {
+    GNUNET_SCHEDULER_cancel (die_task);
+    die_task = NULL;
+  }
+
+  if (NULL != sched_ats)
+  {
+    GNUNET_ATS_scheduling_done (sched_ats);
+    sched_ats = NULL;
+  }
+
+  if (phal != NULL )
+  {
+    GNUNET_ATS_performance_list_addresses_cancel (phal);
+    phal = NULL;
+  }
+
+  if (perf_ats != NULL )
+  {
+    GNUNET_ATS_performance_done (perf_ats);
+    perf_ats = NULL;
+  }
+
+  GNUNET_STATISTICS_watch_cancel (stats, "ats", "# addresses", &stat_cb, NULL);
+  if (NULL != stats)
+  {
+    GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+    stats = NULL;
+  }
+
+
+  GNUNET_free_non_null(p0_addresses[0].addr);
+  GNUNET_free_non_null(p0_addresses[1].addr);
+  GNUNET_free_non_null(p1_addresses[0].addr);
+  GNUNET_free_non_null(p1_addresses[1].addr);
+
+  ret = 0;
+}
+
+
+
+static void
+run (void *cls, const struct GNUNET_CONFIGURATION_Handle *mycfg,
+    struct GNUNET_TESTING_Peer *peer)
+{
+  ret = 1;
+  cfg = (struct GNUNET_CONFIGURATION_Handle *) mycfg;
+  die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, NULL );
+
+  stats = GNUNET_STATISTICS_create ("ats", cfg);
+  GNUNET_STATISTICS_watch (stats, "ats", "# addresses", &stat_cb, NULL);
+
+  /* set up peer 0 */
+  memset (&p[0].id, '1', sizeof (p[0].id));
+  p0_addresses[0].plugin = "test";
+  p0_addresses[0].session = NULL;
+  p0_addresses[0].addr = GNUNET_strdup ("test_p0_a0");
+  p0_addresses[0].addr_len = strlen (p0_addresses[0].addr) + 1;
+
+  p0_ha[0].address = p0_addresses[0].addr;
+  p0_ha[0].address_length = p0_addresses[0].addr_len;
+  p0_ha[0].peer = p[0].id;
+  p0_ha[0].transport_name = p0_addresses[0].plugin;
+
+  p0_addresses[1].plugin = "test";
+  p0_addresses[1].session = NULL;
+  p0_addresses[1].addr = GNUNET_strdup ("test_p0_a1");
+  p0_addresses[1].addr_len = strlen (p0_addresses[1].addr) + 1;
+
+  p0_ha[1].address = p0_addresses[1].addr;
+  p0_ha[1].address_length = p0_addresses[1].addr_len;
+  p0_ha[1].peer = p[0].id;
+  p0_ha[1].transport_name = p0_addresses[1].plugin;
+
+  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Created peer 0: `%s'\n",
+      GNUNET_i2s (&p[0].id));
+
+  memset (&p[1].id, '2', sizeof (p[1].id));
+  p1_addresses[0].plugin = "test";
+  p1_addresses[0].session = NULL;
+  p1_addresses[0].addr = GNUNET_strdup ("test_p1_a0");
+  p1_addresses[0].addr_len = strlen (p1_addresses[0].addr) + 1;
+
+  p1_ha[0].address = p1_addresses[0].addr;
+  p1_ha[0].address_length = p1_addresses[0].addr_len;
+  p1_ha[0].peer = p[1].id;
+  p1_ha[0].transport_name = p1_addresses[0].plugin;
+
+  p1_addresses[1].plugin = "test";
+  p1_addresses[1].session = NULL;
+  p1_addresses[1].addr = GNUNET_strdup ("test_p1_a1");
+  p1_addresses[1].addr_len = strlen (p1_addresses[1].addr) + 1;
+
+  p1_ha[1].address = p1_addresses[1].addr;
+  p1_ha[1].address_length = p1_addresses[1].addr_len;
+  p1_ha[1].peer = p[1].id;
+  p1_ha[1].transport_name = p1_addresses[1].plugin;
+
+  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Created peer 1: `%s'\n",
+      GNUNET_i2s (&p[1].id));
+
+  /* Add addresses */
+  sched_ats = GNUNET_ATS_scheduling_init (cfg, &address_suggest_cb, NULL );
+  if (sched_ats == NULL )
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not setup peer!\n");
+    GNUNET_SCHEDULER_add_now (&end_badly, NULL);
+    return;
+  }
+
+  GNUNET_ATS_address_add (sched_ats, &p0_ha[0], NULL, NULL, 0);
+  GNUNET_ATS_address_add (sched_ats, &p0_ha[1], NULL, NULL, 0);
+
+  GNUNET_ATS_address_add (sched_ats, &p1_ha[0], NULL, NULL, 0);
+  GNUNET_ATS_address_add (sched_ats, &p1_ha[1], NULL, NULL, 0);
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (0
+      != GNUNET_TESTING_peer_run ("test_ats_api_performance",
+          "test_ats_api_delayed.conf", &run, NULL ))
+    return 1;
+  return ret;
+}
+
+/* end of file test_ats_api_delayed_service_performance_list_all_addresses.c */
diff --git a/src/ats/test_ats_api_delayed_service_scheduling_add_address.c b/src/ats/test_ats_api_delayed_service_scheduling_add_address.c
new file mode 100644
index 000000000..4e45ed918
--- /dev/null
+++ b/src/ats/test_ats_api_delayed_service_scheduling_add_address.c
@@ -0,0 +1,234 @@
+/*
+     This file is part of GNUnet.
+     (C) 2010,2011 Christian Grothoff (and other contributing authors)
+
+     GNUnet 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 3, 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
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file ats/test_ats_api_delayed_service_scheduling_add_address.c
+ * @brief test case to ensure messages are transmitted to ATS service when
+ *  service startup is delayed
+ * @author Christian Grothoff
+ * @author Matthias Wachs
+ */
+#include "platform.h"
+#include "gnunet_ats_service.h"
+#include "gnunet_testing_lib.h"
+#include "ats.h"
+#include "test_ats_api_common.h"
+
+/**
+ * Timeout task
+ */
+static struct GNUNET_SCHEDULER_Task * die_task;
+
+/**
+ * Statistics handle
+ */
+struct GNUNET_STATISTICS_Handle *stats;
+
+/**
+ * Scheduling handle
+ */
+static struct GNUNET_ATS_SchedulingHandle *sched_ats;
+
+/**
+ * Return value
+ */
+static int ret;
+
+/**
+ * Test address
+ */
+static struct Test_Address test_addr;
+
+/**
+ * Test peer
+ */
+static struct PeerContext p;
+
+/**
+ * HELLO address
+ */
+struct GNUNET_HELLO_Address test_hello_address;
+
+/**
+ * Session
+ */
+static void *test_session;
+
+/**
+ * Test ats info
+ */
+struct GNUNET_ATS_Information test_ats_info[2];
+
+/**
+ * Test ats count
+ */
+uint32_t test_ats_count;
+
+
+static void end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+static int
+stat_cb(void *cls, const char *subsystem,
+        const char *name, uint64_t value,
+        int is_persistent)
+{
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "ATS statistics: `%s' `%s' %llu\n",
+      subsystem,name, value);
+  if (1 == value)
+  {
+    GNUNET_SCHEDULER_add_now (&end, NULL);
+  }
+  return GNUNET_OK;
+}
+
+
+static void
+end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Shutting down\n");
+
+  if (die_task != NULL)
+  {
+    GNUNET_SCHEDULER_cancel (die_task);
+    die_task = NULL;
+  }
+
+  if (NULL != sched_ats)
+  {
+    GNUNET_ATS_scheduling_done (sched_ats);
+    sched_ats = NULL;
+  }
+
+  GNUNET_STATISTICS_watch_cancel (stats, "ats", "# addresses", &stat_cb, NULL);
+  if (NULL != stats)
+  {
+    GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+    stats = NULL;
+  }
+
+  free_test_address (&test_addr);
+
+  ret = 0;
+}
+
+static void
+end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  die_task = NULL;
+  end ( NULL, NULL);
+  ret = GNUNET_SYSERR;
+}
+
+static void
+address_suggest_cb (void *cls,
+                    const struct GNUNET_PeerIdentity *peer,
+                    const struct GNUNET_HELLO_Address *address,
+                    struct Session *session,
+                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
+                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
+                    const struct GNUNET_ATS_Information *atsi,
+                    uint32_t ats_count)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Did not expect suggestion callback!\n");
+  GNUNET_SCHEDULER_add_now (&end_badly, NULL);
+  return;
+}
+
+
+static void
+got_initial_value (void *cls, int success)
+{
+  struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Got initial value\n");
+
+  /* Connect to ATS scheduling */
+  sched_ats = GNUNET_ATS_scheduling_init (cfg, &address_suggest_cb, NULL);
+  if (sched_ats == NULL)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Could not connect to ATS scheduling!\n");
+    GNUNET_SCHEDULER_add_now (&end_badly, NULL);
+    return;
+  }
+
+  /* Set up peer */
+  memset (&p.id, '1', sizeof (p.id));
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Created peer `%s'\n",
+              GNUNET_i2s_full(&p.id));
+
+  /* Prepare ATS Information */
+  test_ats_info[0].type = htonl (GNUNET_ATS_NETWORK_TYPE);
+  test_ats_info[0].value = htonl(GNUNET_ATS_NET_WAN);
+  test_ats_info[1].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
+  test_ats_info[1].value = htonl(1);
+  test_ats_count = 2;
+
+  /* Adding address without session */
+  test_session = NULL;
+  create_test_address (&test_addr, "test", test_session, "test", strlen ("test") + 1);
+  test_hello_address.peer = p.id;
+  test_hello_address.transport_name = test_addr.plugin;
+  test_hello_address.address = test_addr.addr;
+  test_hello_address.address_length = test_addr.addr_len;
+
+  /* Adding address */
+  GNUNET_ATS_address_add (sched_ats, &test_hello_address, test_session, test_ats_info, test_ats_count);
+
+}
+
+
+static int
+dummy_stat (void *cls, const char *subsystem, const char *name, uint64_t value,
+            int is_persistent)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Got dummy stat %s%s:%s = %llu\n",
+              is_persistent ? "!" : " ", subsystem, name, value);
+  return GNUNET_OK;
+}
+
+
+static void
+run (void *cls,
+     const struct GNUNET_CONFIGURATION_Handle *cfg,
+     struct GNUNET_TESTING_Peer *peer)
+{
+  die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, NULL);
+  stats = GNUNET_STATISTICS_create ("ats", cfg);
+  GNUNET_STATISTICS_watch (stats, "ats", "# addresses", &stat_cb, NULL);
+
+  GNUNET_STATISTICS_get (stats, "ats", "# addresses", TIMEOUT,
+                                       &got_initial_value, &dummy_stat,
+                                       GNUNET_CONFIGURATION_dup (cfg));
+
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  ret = 0;
+  if (0 != GNUNET_TESTING_peer_run ("test-ats-api",
+                                    "test_ats_api_delayed.conf",
+                                    &run, NULL))
+    return 1;
+  return ret;
+}
+
+/* end of file test_ats_api_delayed_service_scheduling_add_address.c */
diff --git a/src/ats/test_delay b/src/ats/test_delay
new file mode 100755
index 000000000..31c7777c4
--- /dev/null
+++ b/src/ats/test_delay
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+TEMP=$(getopt -o t: -- "$@")
+
+if [ $? != 0 ] ; then
+  exit 1
+fi
+
+eval set -- "$TEMP"
+
+while true ; do
+  case "$1" in
+    (-t) sleep "$2" ; shift 2 ;;
+    (--) shift ; break ;;
+    (*) echo "Error parsing getopt output" ; exit 1 ;;
+  esac
+done
+exec "$@"