unix
authorChristian Grothoff <christian@grothoff.org>
Wed, 27 Jul 2011 07:55:41 +0000 (07:55 +0000)
committerChristian Grothoff <christian@grothoff.org>
Wed, 27 Jul 2011 07:55:41 +0000 (07:55 +0000)
src/transport/test_plugin_transport_wlan_dummy.c

index 21cc74aa201bb6b96b558802f5116ac4d74e0223..71fcd29cfd3e755aaa48d2476556f8e75cf997ab 100644 (file)
-/*\r
- This file is part of GNUnet.\r
+/*
+ This file is part of GNUnet.
  (C) 2010 Christian Grothoff (and other contributing authors)
-\r
- GNUnet is free software; you can redistribute it and/or modify\r
- it under the terms of the GNU General Public License as published\r
- by the Free Software Foundation; either version 3, or (at your\r
+
+ 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.
-\r
- GNUnet is distributed in the hope that it will be useful, but\r
- WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\r
+
+ 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.
-\r
- You should have received a copy of the GNU General Public License\r
- along with GNUnet; see the file COPYING.  If not, write to the\r
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,\r
- Boston, MA 02111-1307, USA.\r
- */\r
-/**\r
- * @file transport/test_transport_wlan_dummy.c\r
- * @brief helper for the testcases for plugin_transport_wlan.c\r
- * @author David Brodski\r
- */\r
-\r
-#include <sys/socket.h>\r
-#include <sys/ioctl.h>\r
-#include <sys/types.h>\r
-#include <sys/wait.h>\r
-#include <sys/time.h>\r
-#include <sys/stat.h>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-\r
-#include <errno.h>\r
-#include <resolv.h>\r
-#include <string.h>\r
-#include <utime.h>\r
-#include <unistd.h>\r
-#include <getopt.h>\r
-\r
-#include "platform.h"\r
-#include "gnunet_constants.h"\r
-#include "gnunet_os_lib.h"\r
-#include "gnunet_transport_plugin.h"\r
-#include "transport.h"\r
-#include "gnunet_util_lib.h"\r
-#include "plugin_transport_wlan.h"\r
-#include "gnunet_common.h"\r
-#include "gnunet-transport-wlan-helper.h"\r
-#include "gnunet_crypto_lib.h"\r
-#include "wlan/loopback_helper.h"\r
-#include "wlan/helper_common.h"\r
-\r
-int first;\r
-\r
-static void\r
-sigfunc(int sig)\r
-{\r
-  closeprog = 1;\r
-  unlink(FIFO_FILE1);\r
-  unlink(FIFO_FILE2);\r
-}\r
-\r
-static void\r
-stdin_send(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)\r
-{\r
-  struct sendbuf *write_pout = cls;\r
-  int sendsize;\r
-  struct GNUNET_MessageHeader newheader;\r
-  unsigned char * from_data;\r
-  unsigned char * to_data;\r
-  //unsigned char * from_radiotap;\r
-  unsigned char * to_radiotap;\r
-  //unsigned char * from_start;\r
-  unsigned char * to_start;\r
-\r
-  sendsize = ntohs(hdr->size) - sizeof(struct Radiotap_Send)\r
-      + sizeof(struct Radiotap_rx);\r
-\r
-  if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs(hdr->type))\r
-    {\r
-      fprintf(stderr, "Function stdin_send: wrong packet type\n");\r
-      exit(1);\r
-    }\r
-  if ((sendsize + write_pout->size) > MAXLINE * 2)\r
-    {\r
-      fprintf(stderr, "Function stdin_send: Packet too big for buffer\n");\r
-      exit(1);\r
-    }\r
-\r
-  newheader.size = htons(sendsize);\r
-  newheader.type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);\r
-\r
-  to_start = write_pout->buf + write_pout->size;\r
-  to_radiotap = to_start + sizeof(struct GNUNET_MessageHeader);\r
-  to_data = to_radiotap + sizeof(struct Radiotap_rx);\r
-\r
-  from_data = ((unsigned char *) hdr) + sizeof(struct Radiotap_Send)\r
-      + sizeof(struct GNUNET_MessageHeader);\r
-\r
-  memcpy(to_start, &newheader, sizeof(struct GNUNET_MessageHeader));\r
-  write_pout->size += sizeof(struct GNUNET_MessageHeader);\r
-\r
-  write_pout->size += sizeof(struct Radiotap_rx);\r
-\r
-  memcpy(to_data, from_data, ntohs(hdr->size) - sizeof(struct Radiotap_Send)\r
-      - sizeof(struct GNUNET_MessageHeader));\r
-  write_pout->size += ntohs(hdr->size) - sizeof(struct Radiotap_Send)\r
-      - sizeof(struct GNUNET_MessageHeader);\r
-}\r
-\r
-static void\r
-file_in_send(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)\r
-{\r
-  struct sendbuf * write_std = cls;\r
-  uint16_t sendsize;\r
-\r
-  sendsize = ntohs(hdr->size);\r
-\r
-  if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs(hdr->type))\r
-    {\r
-      fprintf(stderr, "Function file_in_send: wrong packet type\n");\r
-      exit(1);\r
-    }\r
-  if ((sendsize + write_std->size) > MAXLINE * 2)\r
-    {\r
-      fprintf(stderr, "Function file_in_send: Packet too big for buffer\n");\r
-      exit(1);\r
-    }\r
-\r
-  memcpy(write_std->buf + write_std->size, hdr, sendsize);\r
-  write_std->size += sendsize;\r
-}\r
-\r
-int closeprog;\r
-\r
-\r
-int\r
-testmode(int argc, char *argv[])\r
-{\r
-  struct stat st;\r
-  int erg;\r
-\r
-  FILE *fpin = NULL;\r
-  FILE *fpout = NULL;\r
-\r
-  int fdpin;\r
-  int fdpout;\r
-\r
-  //make the fifos if needed\r
-  if (0 != stat(FIFO_FILE1, &st))\r
-    {\r
-      if (0 == stat(FIFO_FILE2, &st))\r
-        {\r
-          fprintf(stderr, "FIFO_FILE2 exists, but FIFO_FILE1 not\n");\r
-          exit(1);\r
-        }\r
-\r
-      umask(0);\r
-      //unlink(FIFO_FILE1);\r
-      //unlink(FIFO_FILE2);\r
-      // FIXME: use mkfifo!\r
-     erg = mknod(FIFO_FILE1, S_IFIFO | 0666, 0);\r
-      if (0 != erg)\r
-        {\r
-          fprintf(stderr, "Error at mknode1 \n");\r
-          //exit(1);\r
-        }\r
-      erg = mknod(FIFO_FILE2, S_IFIFO | 0666, 0);\r
-      if (0 != erg)\r
-        {\r
-          fprintf(stderr, "Error at mknode2 \n");\r
-          //exit(1);\r
-        }\r
-\r
-    }\r
-  else\r
-    {\r
-\r
-      if (0 != stat(FIFO_FILE2, &st))\r
-        {\r
-          fprintf(stderr, "FIFO_FILE1 exists, but FIFO_FILE2 not\n");\r
-          exit(1);\r
-        }\r
-\r
-    }\r
-\r
-  if (strstr(argv[1], "1"))\r
-    {\r
-      //fprintf(stderr, "First\n");\r
-      first = 1;\r
-      fpin = fopen(FIFO_FILE1, "r");\r
-      if (NULL == fpin)\r
-        {\r
-          fprintf(stderr, "fopen of read FIFO_FILE1\n");\r
-          goto end;\r
-        }\r
-      fpout = fopen(FIFO_FILE2, "w");\r
-      if (NULL == fpout)\r
-        {\r
-          fprintf(stderr, "fopen of write FIFO_FILE2\n");\r
-          goto end;\r
-        }\r
-\r
-    }\r
-  else\r
-    {\r
-      first = 0;\r
-      //fprintf(stderr, "Second\n");\r
-      fpout = fopen(FIFO_FILE1, "w");\r
-      if (NULL == fpout)\r
-        {\r
-          fprintf(stderr, "fopen of write FIFO_FILE1\n");\r
-          goto end;\r
-        }\r
-      fpin = fopen(FIFO_FILE2, "r");\r
-      if (NULL == fpin)\r
-        {\r
-          fprintf(stderr, "fopen of read FIFO_FILE2\n");\r
-          goto end;\r
-        }\r
-\r
-    }\r
-\r
-  fdpin = fileno(fpin);\r
-  GNUNET_assert(fpin >= 0);\r
-\r
-  if (fdpin >= FD_SETSIZE)\r
-    {\r
-      fprintf(stderr, "File fdpin number too large (%d > %u)\n", fdpin,\r
-          (unsigned int) FD_SETSIZE);\r
-      goto end;\r
-    }\r
-\r
-  fdpout = fileno(fpout);\r
-  GNUNET_assert(fdpout >= 0 );\r
-\r
-  if (fdpout >= FD_SETSIZE)\r
-    {\r
-      fprintf(stderr, "File fdpout number too large (%d > %u)\n", fdpout,\r
-          (unsigned int) FD_SETSIZE);\r
-      goto end;\r
-\r
-    }\r
-\r
-  signal(SIGINT, &sigfunc);\r
-  signal(SIGTERM, &sigfunc);\r
-\r
-  char readbuf[MAXLINE];\r
-  int readsize = 0;\r
-  struct sendbuf write_std;\r
-  write_std.size = 0;\r
-  write_std.pos = 0;\r
-\r
-  struct sendbuf write_pout;\r
-  write_pout.size = 0;\r
-  write_pout.pos = 0;\r
-\r
-  int ret = 0;\r
-  int maxfd = 0;\r
-\r
-  fd_set rfds;\r
-  fd_set wfds;\r
-  struct timeval tv;\r
-  int retval;\r
-\r
-  struct GNUNET_SERVER_MessageStreamTokenizer * stdin_mst;\r
-  struct GNUNET_SERVER_MessageStreamTokenizer * file_in_mst;\r
-\r
-  stdin_mst = GNUNET_SERVER_mst_create(&stdin_send, &write_pout);\r
-  file_in_mst = GNUNET_SERVER_mst_create(&file_in_send, &write_std);\r
-\r
-  //send mac first\r
-\r
-  struct MacAddress macaddr;\r
-\r
-  //Send random mac address\r
-  macaddr.mac[0] = 0x13;\r
-  macaddr.mac[1] = 0x22;\r
-  macaddr.mac[2] = 0x33;\r
-  macaddr.mac[3] = 0x44;\r
-  macaddr.mac[4] = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_STRONG, 256);\r
-  macaddr.mac[5] = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_NONCE, 256);\r
-\r
-  write_std.size = send_mac_to_plugin((char *) write_std.buf, macaddr.mac);\r
-\r
-  while (0 == closeprog)\r
-    {\r
-\r
-      maxfd = 0;\r
-\r
-      //set timeout\r
-      tv.tv_sec = 5;\r
-      tv.tv_usec = 0;\r
-\r
-      FD_ZERO(&rfds);\r
-      // if output queue is empty\r
-      if (0 == write_pout.size)\r
-        {\r
-          FD_SET(STDIN_FILENO, &rfds);\r
-\r
-        }\r
-      if (0 == write_std.size)\r
-        {\r
-          FD_SET(fdpin, &rfds);\r
-          maxfd = fdpin;\r
-        }\r
-      FD_ZERO(&wfds);\r
-      // if there is something to write\r
-      if (0 < write_std.size)\r
-        {\r
-          FD_SET(STDOUT_FILENO, &wfds);\r
-          maxfd = MAX(maxfd, STDOUT_FILENO);\r
-        }\r
-\r
-      if (0 < write_pout.size)\r
-        {\r
-          FD_SET(fdpout, &wfds);\r
-          maxfd = MAX(maxfd, fdpout);\r
-        }\r
-\r
-      retval = select(maxfd + 1, &rfds, &wfds, NULL, &tv);\r
-\r
-      if (-1 == retval && EINTR == errno)\r
-        {\r
-          continue;\r
-        }\r
-      if (0 > retval)\r
-        {\r
-          fprintf(stderr, "select failed: %s\n", strerror(errno));\r
-          closeprog = 1;\r
-          break;\r
-        }\r
-\r
-      if (FD_ISSET(STDOUT_FILENO, &wfds))\r
-        {\r
-          ret = write(STDOUT_FILENO, write_std.buf + write_std.pos,\r
-              write_std.size - write_std.pos);\r
-\r
-          if (0 > ret)\r
-            {\r
-              closeprog = 1;\r
-              fprintf(stderr, "Write ERROR to STDOUT\n");\r
-              break;\r
-            }\r
-          else\r
-            {\r
-              write_std.pos += ret;\r
-              // check if finished\r
-              if (write_std.pos == write_std.size)\r
-                {\r
-                  write_std.pos = 0;\r
-                  write_std.size = 0;\r
-                }\r
-            }\r
-        }\r
-\r
-      if (FD_ISSET(fdpout, &wfds))\r
-        {\r
-          ret = write(fdpout, write_pout.buf + write_pout.pos, write_pout.size\r
-              - write_pout.pos);\r
-\r
-          if (0 > ret)\r
-            {\r
-              closeprog = 1;\r
-              fprintf(stderr, "Write ERROR to fdpout\n");\r
-            }\r
-          else\r
-            {\r
-              write_pout.pos += ret;\r
-              // check if finished\r
-              if (write_pout.pos == write_pout.size)\r
-                {\r
-                  write_pout.pos = 0;\r
-                  write_pout.size = 0;\r
-                }\r
-            }\r
-        }\r
-\r
-      if (FD_ISSET(STDIN_FILENO, &rfds))\r
-        {\r
-          readsize = read(STDIN_FILENO, readbuf, sizeof(readbuf));\r
-\r
-          if (0 > readsize)\r
-            {\r
-              closeprog = 1;\r
-              fprintf(stderr, "Read ERROR to STDIN_FILENO\n");\r
-            }\r
-          else if (0 < readsize)\r
-            {\r
-              GNUNET_SERVER_mst_receive(stdin_mst, NULL, readbuf, readsize,\r
-                  GNUNET_NO, GNUNET_NO);\r
-\r
-            }\r
-          else\r
-            {\r
-              //eof\r
-              closeprog = 1;\r
-            }\r
-        }\r
-\r
-      if (FD_ISSET(fdpin, &rfds))\r
-        {\r
-          readsize = read(fdpin, readbuf, sizeof(readbuf));\r
-\r
-          if (0 > readsize)\r
-            {\r
-              closeprog = 1;\r
-              fprintf(stderr, "Read ERROR to fdpin: %s\n", strerror(errno));\r
-              break;\r
-            }\r
-          else if (0 < readsize)\r
-            {\r
-              GNUNET_SERVER_mst_receive(file_in_mst, NULL, readbuf, readsize,\r
-                  GNUNET_NO, GNUNET_NO);\r
-\r
-            }\r
-          else\r
-            {\r
-              //eof\r
-              closeprog = 1;\r
-            }\r
-        }\r
-\r
-    }\r
-\r
-  //clean up\r
-\r
-  GNUNET_SERVER_mst_destroy(stdin_mst);\r
-  GNUNET_SERVER_mst_destroy(file_in_mst);\r
-\r
-  end: if (fpout != NULL)\r
-    fclose(fpout);\r
-  if (fpin != NULL)\r
-    fclose(fpin);\r
-\r
-  if (1 == first)\r
-    {\r
-      unlink(FIFO_FILE1);\r
-      unlink(FIFO_FILE2);\r
-    }\r
-\r
-  return (0);\r
-}\r
-\r
-int\r
-main(int argc, char *argv[])\r
-{\r
-  if (2 != argc)\r
-    {\r
-      fprintf (stderr,\r
-               "This program must be started with the operating mode as argument.\n");\r
-      fprintf (stderr,\r
-               "Usage: options\n"\r
-               "options:\n"\r
-               "1 = first loopback file\n"\r
-               "2 = second loopback file\n"\r
-               "\n");\r
-      return 1;\r
-    }\r
-  if (strstr(argv[1], "1") || strstr(argv[1], "2"))\r
-    return testmode(argc, argv);\r
-  return 1;\r
-}\r
+
+ 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 transport/test_transport_wlan_dummy.c
+ * @brief helper for the testcases for plugin_transport_wlan.c
+ * @author David Brodski
+ */
+
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <errno.h>
+#include <resolv.h>
+#include <string.h>
+#include <utime.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#include "platform.h"
+#include "gnunet_constants.h"
+#include "gnunet_os_lib.h"
+#include "gnunet_transport_plugin.h"
+#include "transport.h"
+#include "gnunet_util_lib.h"
+#include "plugin_transport_wlan.h"
+#include "gnunet_common.h"
+#include "gnunet-transport-wlan-helper.h"
+#include "gnunet_crypto_lib.h"
+#include "wlan/loopback_helper.h"
+#include "wlan/helper_common.h"
+
+int first;
+
+static void
+sigfunc(int sig)
+{
+  closeprog = 1;
+  unlink(FIFO_FILE1);
+  unlink(FIFO_FILE2);
+}
+
+static void
+stdin_send(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
+{
+  struct sendbuf *write_pout = cls;
+  int sendsize;
+  struct GNUNET_MessageHeader newheader;
+  unsigned char * from_data;
+  unsigned char * to_data;
+  //unsigned char * from_radiotap;
+  unsigned char * to_radiotap;
+  //unsigned char * from_start;
+  unsigned char * to_start;
+
+  sendsize = ntohs(hdr->size) - sizeof(struct Radiotap_Send)
+      + sizeof(struct Radiotap_rx);
+
+  if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs(hdr->type))
+    {
+      fprintf(stderr, "Function stdin_send: wrong packet type\n");
+      exit(1);
+    }
+  if ((sendsize + write_pout->size) > MAXLINE * 2)
+    {
+      fprintf(stderr, "Function stdin_send: Packet too big for buffer\n");
+      exit(1);
+    }
+
+  newheader.size = htons(sendsize);
+  newheader.type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+
+  to_start = write_pout->buf + write_pout->size;
+  to_radiotap = to_start + sizeof(struct GNUNET_MessageHeader);
+  to_data = to_radiotap + sizeof(struct Radiotap_rx);
+
+  from_data = ((unsigned char *) hdr) + sizeof(struct Radiotap_Send)
+      + sizeof(struct GNUNET_MessageHeader);
+
+  memcpy(to_start, &newheader, sizeof(struct GNUNET_MessageHeader));
+  write_pout->size += sizeof(struct GNUNET_MessageHeader);
+
+  write_pout->size += sizeof(struct Radiotap_rx);
+
+  memcpy(to_data, from_data, ntohs(hdr->size) - sizeof(struct Radiotap_Send)
+      - sizeof(struct GNUNET_MessageHeader));
+  write_pout->size += ntohs(hdr->size) - sizeof(struct Radiotap_Send)
+      - sizeof(struct GNUNET_MessageHeader);
+}
+
+static void
+file_in_send(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
+{
+  struct sendbuf * write_std = cls;
+  uint16_t sendsize;
+
+  sendsize = ntohs(hdr->size);
+
+  if (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA != ntohs(hdr->type))
+    {
+      fprintf(stderr, "Function file_in_send: wrong packet type\n");
+      exit(1);
+    }
+  if ((sendsize + write_std->size) > MAXLINE * 2)
+    {
+      fprintf(stderr, "Function file_in_send: Packet too big for buffer\n");
+      exit(1);
+    }
+
+  memcpy(write_std->buf + write_std->size, hdr, sendsize);
+  write_std->size += sendsize;
+}
+
+int closeprog;
+
+
+int
+testmode(int argc, char *argv[])
+{
+  struct stat st;
+  int erg;
+
+  FILE *fpin = NULL;
+  FILE *fpout = NULL;
+
+  int fdpin;
+  int fdpout;
+
+  //make the fifos if needed
+  if (0 != stat(FIFO_FILE1, &st))
+    {
+      if (0 == stat(FIFO_FILE2, &st))
+        {
+          fprintf(stderr, "FIFO_FILE2 exists, but FIFO_FILE1 not\n");
+          exit(1);
+        }
+
+      umask(0);
+      //unlink(FIFO_FILE1);
+      //unlink(FIFO_FILE2);
+      // FIXME: use mkfifo!
+     erg = mknod(FIFO_FILE1, S_IFIFO | 0666, 0);
+      if (0 != erg)
+        {
+          fprintf(stderr, "Error at mknode1 \n");
+          //exit(1);
+        }
+      erg = mknod(FIFO_FILE2, S_IFIFO | 0666, 0);
+      if (0 != erg)
+        {
+          fprintf(stderr, "Error at mknode2 \n");
+          //exit(1);
+        }
+
+    }
+  else
+    {
+
+      if (0 != stat(FIFO_FILE2, &st))
+        {
+          fprintf(stderr, "FIFO_FILE1 exists, but FIFO_FILE2 not\n");
+          exit(1);
+        }
+
+    }
+
+  if (strstr(argv[1], "1"))
+    {
+      //fprintf(stderr, "First\n");
+      first = 1;
+      fpin = fopen(FIFO_FILE1, "r");
+      if (NULL == fpin)
+        {
+          fprintf(stderr, "fopen of read FIFO_FILE1\n");
+          goto end;
+        }
+      fpout = fopen(FIFO_FILE2, "w");
+      if (NULL == fpout)
+        {
+          fprintf(stderr, "fopen of write FIFO_FILE2\n");
+          goto end;
+        }
+
+    }
+  else
+    {
+      first = 0;
+      //fprintf(stderr, "Second\n");
+      fpout = fopen(FIFO_FILE1, "w");
+      if (NULL == fpout)
+        {
+          fprintf(stderr, "fopen of write FIFO_FILE1\n");
+          goto end;
+        }
+      fpin = fopen(FIFO_FILE2, "r");
+      if (NULL == fpin)
+        {
+          fprintf(stderr, "fopen of read FIFO_FILE2\n");
+          goto end;
+        }
+
+    }
+
+  fdpin = fileno(fpin);
+  GNUNET_assert(fpin >= 0);
+
+  if (fdpin >= FD_SETSIZE)
+    {
+      fprintf(stderr, "File fdpin number too large (%d > %u)\n", fdpin,
+          (unsigned int) FD_SETSIZE);
+      goto end;
+    }
+
+  fdpout = fileno(fpout);
+  GNUNET_assert(fdpout >= 0 );
+
+  if (fdpout >= FD_SETSIZE)
+    {
+      fprintf(stderr, "File fdpout number too large (%d > %u)\n", fdpout,
+          (unsigned int) FD_SETSIZE);
+      goto end;
+
+    }
+
+  signal(SIGINT, &sigfunc);
+  signal(SIGTERM, &sigfunc);
+
+  char readbuf[MAXLINE];
+  int readsize = 0;
+  struct sendbuf write_std;
+  write_std.size = 0;
+  write_std.pos = 0;
+
+  struct sendbuf write_pout;
+  write_pout.size = 0;
+  write_pout.pos = 0;
+
+  int ret = 0;
+  int maxfd = 0;
+
+  fd_set rfds;
+  fd_set wfds;
+  struct timeval tv;
+  int retval;
+
+  struct GNUNET_SERVER_MessageStreamTokenizer * stdin_mst;
+  struct GNUNET_SERVER_MessageStreamTokenizer * file_in_mst;
+
+  stdin_mst = GNUNET_SERVER_mst_create(&stdin_send, &write_pout);
+  file_in_mst = GNUNET_SERVER_mst_create(&file_in_send, &write_std);
+
+  //send mac first
+
+  struct MacAddress macaddr;
+
+  //Send random mac address
+  macaddr.mac[0] = 0x13;
+  macaddr.mac[1] = 0x22;
+  macaddr.mac[2] = 0x33;
+  macaddr.mac[3] = 0x44;
+  macaddr.mac[4] = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_STRONG, 256);
+  macaddr.mac[5] = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_NONCE, 256);
+
+  write_std.size = send_mac_to_plugin((char *) write_std.buf, macaddr.mac);
+
+  while (0 == closeprog)
+    {
+
+      maxfd = 0;
+
+      //set timeout
+      tv.tv_sec = 5;
+      tv.tv_usec = 0;
+
+      FD_ZERO(&rfds);
+      // if output queue is empty
+      if (0 == write_pout.size)
+        {
+          FD_SET(STDIN_FILENO, &rfds);
+
+        }
+      if (0 == write_std.size)
+        {
+          FD_SET(fdpin, &rfds);
+          maxfd = fdpin;
+        }
+      FD_ZERO(&wfds);
+      // if there is something to write
+      if (0 < write_std.size)
+        {
+          FD_SET(STDOUT_FILENO, &wfds);
+          maxfd = MAX(maxfd, STDOUT_FILENO);
+        }
+
+      if (0 < write_pout.size)
+        {
+          FD_SET(fdpout, &wfds);
+          maxfd = MAX(maxfd, fdpout);
+        }
+
+      retval = select(maxfd + 1, &rfds, &wfds, NULL, &tv);
+
+      if (-1 == retval && EINTR == errno)
+        {
+          continue;
+        }
+      if (0 > retval)
+        {
+          fprintf(stderr, "select failed: %s\n", strerror(errno));
+          closeprog = 1;
+          break;
+        }
+
+      if (FD_ISSET(STDOUT_FILENO, &wfds))
+        {
+          ret = write(STDOUT_FILENO, write_std.buf + write_std.pos,
+              write_std.size - write_std.pos);
+
+          if (0 > ret)
+            {
+              closeprog = 1;
+              fprintf(stderr, "Write ERROR to STDOUT\n");
+              break;
+            }
+          else
+            {
+              write_std.pos += ret;
+              // check if finished
+              if (write_std.pos == write_std.size)
+                {
+                  write_std.pos = 0;
+                  write_std.size = 0;
+                }
+            }
+        }
+
+      if (FD_ISSET(fdpout, &wfds))
+        {
+          ret = write(fdpout, write_pout.buf + write_pout.pos, write_pout.size
+              - write_pout.pos);
+
+          if (0 > ret)
+            {
+              closeprog = 1;
+              fprintf(stderr, "Write ERROR to fdpout\n");
+            }
+          else
+            {
+              write_pout.pos += ret;
+              // check if finished
+              if (write_pout.pos == write_pout.size)
+                {
+                  write_pout.pos = 0;
+                  write_pout.size = 0;
+                }
+            }
+        }
+
+      if (FD_ISSET(STDIN_FILENO, &rfds))
+        {
+          readsize = read(STDIN_FILENO, readbuf, sizeof(readbuf));
+
+          if (0 > readsize)
+            {
+              closeprog = 1;
+              fprintf(stderr, "Read ERROR to STDIN_FILENO\n");
+            }
+          else if (0 < readsize)
+            {
+              GNUNET_SERVER_mst_receive(stdin_mst, NULL, readbuf, readsize,
+                  GNUNET_NO, GNUNET_NO);
+
+            }
+          else
+            {
+              //eof
+              closeprog = 1;
+            }
+        }
+
+      if (FD_ISSET(fdpin, &rfds))
+        {
+          readsize = read(fdpin, readbuf, sizeof(readbuf));
+
+          if (0 > readsize)
+            {
+              closeprog = 1;
+              fprintf(stderr, "Read ERROR to fdpin: %s\n", strerror(errno));
+              break;
+            }
+          else if (0 < readsize)
+            {
+              GNUNET_SERVER_mst_receive(file_in_mst, NULL, readbuf, readsize,
+                  GNUNET_NO, GNUNET_NO);
+
+            }
+          else
+            {
+              //eof
+              closeprog = 1;
+            }
+        }
+
+    }
+
+  //clean up
+
+  GNUNET_SERVER_mst_destroy(stdin_mst);
+  GNUNET_SERVER_mst_destroy(file_in_mst);
+
+  end: if (fpout != NULL)
+    fclose(fpout);
+  if (fpin != NULL)
+    fclose(fpin);
+
+  if (1 == first)
+    {
+      unlink(FIFO_FILE1);
+      unlink(FIFO_FILE2);
+    }
+
+  return (0);
+}
+
+int
+main(int argc, char *argv[])
+{
+  if (2 != argc)
+    {
+      fprintf (stderr,
+               "This program must be started with the operating mode as argument.\n");
+      fprintf (stderr,
+               "Usage: options\n"
+               "options:\n"
+               "1 = first loopback file\n"
+               "2 = second loopback file\n"
+               "\n");
+      return 1;
+    }
+  if (strstr(argv[1], "1") || strstr(argv[1], "2"))
+    return testmode(argc, argv);
+  return 1;
+}