/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

/*
 * File: sockping.c
 *
 * Description:
 * This test runs in conjunction with the sockpong test.
 * This test creates a socket pair and passes one socket
 * to the sockpong test.  Then this test writes "ping" to
 * to the sockpong test and the sockpong test writes "pong"
 * back.  To run this pair of tests, just invoke sockping.
 *
 * Tested areas: process creation, socket pairs, file
 * descriptor inheritance.
 */

#include "prerror.h"
#include "prio.h"
#include "prproces.h"

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

#define NUM_ITERATIONS 10

static char* child_argv[] = {"sockpong", NULL};

int main(int argc, char** argv) {
  PRFileDesc* sock[2];
  PRStatus status;
  PRProcess* process;
  PRProcessAttr* attr;
  char buf[1024];
  PRInt32 nBytes;
  PRInt32 exitCode;
  int idx;

  status = PR_NewTCPSocketPair(sock);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_NewTCPSocketPair failed\n");
    exit(1);
  }

  status = PR_SetFDInheritable(sock[0], PR_FALSE);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_SetFDInheritable failed: (%d, %d)\n", PR_GetError(),
            PR_GetOSError());
    exit(1);
  }
  status = PR_SetFDInheritable(sock[1], PR_TRUE);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_SetFDInheritable failed: (%d, %d)\n", PR_GetError(),
            PR_GetOSError());
    exit(1);
  }

  attr = PR_NewProcessAttr();
  if (attr == NULL) {
    fprintf(stderr, "PR_NewProcessAttr failed\n");
    exit(1);
  }

  status = PR_ProcessAttrSetInheritableFD(attr, sock[1], "SOCKET");
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
    exit(1);
  }

  process = PR_CreateProcess(child_argv[0], child_argv, NULL, attr);
  if (process == NULL) {
    fprintf(stderr, "PR_CreateProcess failed\n");
    exit(1);
  }
  PR_DestroyProcessAttr(attr);
  status = PR_Close(sock[1]);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_Close failed\n");
    exit(1);
  }

  for (idx = 0; idx < NUM_ITERATIONS; idx++) {
    strcpy(buf, "ping");
    printf("ping process: sending \"%s\"\n", buf);
    nBytes = PR_Write(sock[0], buf, 5);
    if (nBytes == -1) {
      fprintf(stderr, "PR_Write failed: (%d, %d)\n", PR_GetError(),
              PR_GetOSError());
      exit(1);
    }
    memset(buf, 0, sizeof(buf));
    nBytes = PR_Read(sock[0], buf, sizeof(buf));
    if (nBytes == -1) {
      fprintf(stderr, "PR_Read failed: (%d, %d)\n", PR_GetError(),
              PR_GetOSError());
      exit(1);
    }
    printf("ping process: received \"%s\"\n", buf);
    if (nBytes != 5) {
      fprintf(stderr, "ping process: expected 5 bytes but got %d bytes\n",
              nBytes);
      exit(1);
    }
    if (strcmp(buf, "pong") != 0) {
      fprintf(stderr, "ping process: expected \"pong\" but got \"%s\"\n", buf);
      exit(1);
    }
  }

  status = PR_Close(sock[0]);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_Close failed\n");
    exit(1);
  }
  status = PR_WaitProcess(process, &exitCode);
  if (status == PR_FAILURE) {
    fprintf(stderr, "PR_WaitProcess failed\n");
    exit(1);
  }
  if (exitCode == 0) {
    printf("PASS\n");
    return 0;
  } else {
    printf("FAIL\n");
    return 1;
  }
}
