/*!
    \Copyright Sertainty Corporation, 2021. All Rights Reserved.

    \File     open_uxp_auth.uxl

    \Brief    This sample shows how to open and interactively authenticate a
              UXP Object using known prompt/response pairs and read contents
              of virtual files protected within a UXP Object.

    \Author   Melvin Valdez de la Roca
    \Date     07/15/2020

    \Note     Application expects to find the necessary source files in the current working folder.
 */

replace procedure open_uxp_auth()
{
  bytearray buffer;
  int appHandle, fileHandle, len;
  string uxpFileSpec = "sample.uxp";
  string copy2Spec = "copy2.pdf";
  string fp;

  printf("\n\nOpening and Authenticating into a UXP interactively\n\n");

  printf("Opening new Data\n");

  printf("Credentials necessary to access UXP:\n");
  printf("  Username = SampleUser@myemail.com\n");
  printf("  Challenge 1 = Response 1\n");
  printf("  Challenge 2 = Response 2\n");
  printf("  ... \n");
  printf("  Challenge 10 = Response 10\n\n");

  appHandle = sf::openUxp(uxpFileSpec, "ShareReadOnly");
  if (errorstring)
  {
    printf("\nError opening UXP: %1\n", errorstring);
    return;
  }
  else
  {
    printf("You're authorized\n");
  }

  printf("\nExtracting data.pdf to copy2.pdf\n");

  fileHandle = sf::openFile(appHandle, "data.pdf");
  if (errorstring)
  {
    printf("Error opening virtual file: %1\n", errorstring);
  }

  fp = file::open(copy2Spec, "wb");

  while (sf::readFile(appHandle, fileHandle, buffer, 100000))
  {
    len = strlen(buffer);
    file::write(buffer, len, 1, fp);
  }

  file::close(fp);

  sf::closeFile(appHandle, fileHandle);

  if (sf::compareExternalFile(appHandle, "data.pdf", copy2Spec))
  {
    printf("Comparison of data.pdf to copy2.pdf: successful\n");
  }
  else
  {
    printf("Comparison of data.pdf to copy2.pdf: failed\n");
  }

  /*
      Close up again and free handle
  */

  sf::closeUxp(appHandle);

  printf("You have successfully opened and interactively authenticated into a UXP.\n");
  printf("You may try out other advanced samples now.\n");

  printf("\nSample finished running\n");

  return 0;
}

open_uxp_auth();