/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/***********************************************************************
**  1997 - Netscape Communications Corporation
**
** Name: prselect_err.c
**
** Description: tests PR_Select with sockets Error condition functions.
**
** Modification History:
** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
**           The debug mode will print all of the printfs associated with this
*test.
**           The regress mode will be the default mode. Since the regress tool
*limits
**           the output to a one line status:PASS or FAIL,all of the printf
*statements
**           have been handled with an if (debug_mode) statement.
***********************************************************************/

/***********************************************************************
** Includes
***********************************************************************/
/* Used to get the command line option */
#include "plgetopt.h"
#include "prttools.h"

#include "prinit.h"
#include "prio.h"
#include "prlog.h"
#include "prprf.h"
#include "prerror.h"
#include "prnetdb.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

/***********************************************************************
** PRIVATE FUNCTION:    Test_Result
** DESCRIPTION: Used in conjunction with the regress tool, prints out the
**              status of the test case.
** INPUTS:      PASS/FAIL
** OUTPUTS:     None
** RETURN:      None
** SIDE EFFECTS:
**
** RESTRICTIONS:
**      None
** MEMORY:      NA
** ALGORITHM:   Determine what the status is and print accordingly.
**
***********************************************************************/

static Test_Result(int result) {
  if (result == PASS) {
    printf("PASS\n");
  } else {
    printf("FAIL\n");
  }
}

static void clientThreadFunc(void* arg) {
  PRUint16 port = (PRUint16)arg;
  PRFileDesc* sock;
  PRNetAddr addr;
  char buf[128];
  int i;

  addr.inet.family = AF_INET;
  addr.inet.port = PR_htons(port);
  addr.inet.ip = PR_htonl(INADDR_LOOPBACK);
  PR_snprintf(buf, sizeof(buf), "%hu", port);

  for (i = 0; i < 5; i++) {
    sock = PR_NewTCPSocket();
    PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT);
    PR_Write(sock, buf, sizeof(buf));
    PR_Close(sock);
  }
}

int main(int argc, char** argv) {
  PRFileDesc *listenSock1, *listenSock2;
  PRFileDesc* badFD;
  PRFileDesc *fds0[10], *fds1[10], **fds, **other_fds;
  PRIntn nfds;
  PRUint16 listenPort1, listenPort2;
  PRNetAddr addr;
  PR_fd_set readFdSet;
  char buf[128];
  PRThread* clientThread;
  PRInt32 retVal;
  PRIntn i, j;

  /* The command line argument: -d is used to determine if the test is being run
  in debug mode. The regress tool requires only one line output:PASS or FAIL.
  All of the printfs associated with this test has been handled with a if
  (debug_mode) test. Usage: test_name -d
  */
  PLOptStatus os;
  PLOptState* opt = PL_CreateOptState(argc, argv, "d:");
  while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
    if (PL_OPT_BAD == os) {
      continue;
    }
    switch (opt->option) {
      case 'd': /* debug mode */
        debug_mode = 1;
        break;
      default:
        break;
    }
  }
  PL_DestroyOptState(opt);

  /* main test */

  PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);

  if (debug_mode) {
    printf("This program tests PR_Select with sockets.  Timeout, error\n");
    printf("reporting, and normal operation are tested.\n\n");
  }

  /* Create two listening sockets */
  if ((listenSock1 = PR_NewTCPSocket()) == NULL) {
    fprintf(stderr, "Can't create a new TCP socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  addr.inet.family = AF_INET;
  addr.inet.ip = PR_htonl(INADDR_ANY);
  addr.inet.port = PR_htons(0);
  if (PR_Bind(listenSock1, &addr) == PR_FAILURE) {
    fprintf(stderr, "Can't bind socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  if (PR_GetSockName(listenSock1, &addr) == PR_FAILURE) {
    fprintf(stderr, "PR_GetSockName failed\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  listenPort1 = PR_ntohs(addr.inet.port);
  if (PR_Listen(listenSock1, 5) == PR_FAILURE) {
    fprintf(stderr, "Can't listen on a socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }

  if ((listenSock2 = PR_NewTCPSocket()) == NULL) {
    fprintf(stderr, "Can't create a new TCP socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  addr.inet.family = AF_INET;
  addr.inet.ip = PR_htonl(INADDR_ANY);
  addr.inet.port = PR_htons(0);
  if (PR_Bind(listenSock2, &addr) == PR_FAILURE) {
    fprintf(stderr, "Can't bind socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  if (PR_GetSockName(listenSock2, &addr) == PR_FAILURE) {
    fprintf(stderr, "PR_GetSockName failed\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  listenPort2 = PR_ntohs(addr.inet.port);
  if (PR_Listen(listenSock2, 5) == PR_FAILURE) {
    fprintf(stderr, "Can't listen on a socket\n");
    if (!debug_mode) {
      Test_Result(FAIL);
    }
    exit(1);
  }
  PR_snprintf(buf, sizeof(buf),
              "The server thread is listening on ports %hu and %hu\n\n",
              listenPort1, listenPort2);
  printf("%s", buf);

  /* Set up the fd set */
  PR_FD_ZERO(&readFdSet);
  PR_FD_SET(listenSock1, &readFdSet);
  PR_FD_SET(listenSock2, &readFdSet);

  /* Testing timeout */
  if (debug_mode) {
    printf("PR_Select should time out in 5 seconds\n");
  }
  retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
                     PR_SecondsToInterval(5));
  if (retVal != 0) {
    PR_snprintf(buf, sizeof(buf),
                "PR_Select should time out and return 0, but it returns %ld\n",
                retVal);
    fprintf(stderr, "%s", buf);
    if (retVal == -1) {
      fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(), PR_GetOSError());
      if (!debug_mode) {
        Test_Result(FAIL);
      }
    }
    exit(1);
  }
  if (debug_mode) {
    printf("PR_Select timed out.  Test passed.\n\n");
  } else {
    Test_Result(PASS);
  }

  /* Testing bad fd */
  printf("PR_Select should detect a bad file descriptor\n");
  if ((badFD = PR_NewTCPSocket()) == NULL) {
    fprintf(stderr, "Can't create a TCP socket\n");
    exit(1);
  }

  PR_FD_SET(listenSock1, &readFdSet);
  PR_FD_SET(listenSock2, &readFdSet);
  PR_FD_SET(badFD, &readFdSet);
  PR_Close(badFD); /* make the fd bad */
  retVal =
      PR_Select(0 /* unused */, &readFdSet, NULL, NULL, PR_INTERVAL_NO_TIMEOUT);
  if (retVal != -1 || PR_GetError() != PR_BAD_DESCRIPTOR_ERROR) {
    fprintf(stderr,
            "Failed to detect the bad fd: "
            "PR_Select returns %d\n",
            retVal);
    if (retVal == -1) {
      fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(), PR_GetOSError());
    }
    exit(1);
  }
  printf("PR_Select detected a bad fd.  Test passed.\n\n");
  PR_FD_CLR(badFD, &readFdSet);

  clientThread = PR_CreateThread(PR_USER_THREAD, clientThreadFunc,
                                 (void*)listenPort1, PR_PRIORITY_NORMAL,
                                 PR_LOCAL_THREAD, PR_UNJOINABLE_THREAD, 0);
  if (clientThread == NULL) {
    fprintf(stderr, "can't create thread\n");
    exit(1);
  }

  clientThread = PR_CreateThread(PR_USER_THREAD, clientThreadFunc,
                                 (void*)listenPort2, PR_PRIORITY_NORMAL,
                                 PR_LOCAL_THREAD, PR_UNJOINABLE_THREAD, 0);
  if (clientThread == NULL) {
    fprintf(stderr, "can't create thread\n");
    exit(1);
  }

  printf("Two client threads are created.  Each of them will\n");
  printf("send data to one of the two ports the server is listening on.\n");
  printf("The data they send is the port number.  Each of them send\n");
  printf("the data five times, so you should see ten lines below,\n");
  printf("interleaved in an arbitrary order.\n");

  /* set up the fd array */
  fds = fds0;
  other_fds = fds1;
  fds[0] = listenSock1;
  fds[1] = listenSock2;
  nfds = 2;
  PR_FD_SET(listenSock1, &readFdSet);
  PR_FD_SET(listenSock2, &readFdSet);

  /* 20 events total */
  i = 0;
  while (i < 20) {
    PRFileDesc** tmp;
    int nextIndex;
    int nEvents = 0;

    retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
                       PR_INTERVAL_NO_TIMEOUT);
    PR_ASSERT(retVal != 0); /* no timeout */
    if (retVal == -1) {
      fprintf(stderr, "PR_Select failed (%d, %d)\n", PR_GetError(),
              PR_GetOSError());
      exit(1);
    }

    nextIndex = 2;
    /* the two listening sockets */
    for (j = 0; j < 2; j++) {
      other_fds[j] = fds[j];
      if (PR_FD_ISSET(fds[j], &readFdSet)) {
        PRFileDesc* sock;

        nEvents++;
        sock = PR_Accept(fds[j], NULL, PR_INTERVAL_NO_TIMEOUT);
        if (sock == NULL) {
          fprintf(stderr, "PR_Accept() failed\n");
          exit(1);
        }
        other_fds[nextIndex] = sock;
        PR_FD_SET(sock, &readFdSet);
        nextIndex++;
      }
      PR_FD_SET(fds[j], &readFdSet);
    }

    for (j = 2; j < nfds; j++) {
      if (PR_FD_ISSET(fds[j], &readFdSet)) {
        PRInt32 nBytes;

        PR_FD_CLR(fds[j], &readFdSet);
        nEvents++;
        nBytes = PR_Read(fds[j], buf, sizeof(buf));
        if (nBytes == -1) {
          fprintf(stderr, "PR_Read() failed\n");
          exit(1);
        }
        /* Just to be safe */
        buf[127] = '\0';
        PR_Close(fds[j]);
        printf("The server received \"%s\" from a client\n", buf);
      } else {
        PR_FD_SET(fds[j], &readFdSet);
        other_fds[nextIndex] = fds[j];
        nextIndex++;
      }
    }

    PR_ASSERT(retVal == nEvents);
    /* swap */
    tmp = fds;
    fds = other_fds;
    other_fds = tmp;
    nfds = nextIndex;
    i += nEvents;
  }

  printf("All tests finished\n");
  PR_Cleanup();
  return 0;
}