/* Include CUPS header files */
#include <cups/cups.h>


/*
 * 'main()' - Get and display a web page.
 */

int                /* O - Exit status */
main(int  argc,    /* I - Number of command-line arguments */
     char *argv[]) /* I - Command-line arguments */
{
  http_t            *http;
  http_status_t     status;
  char              scheme[HTTP_MAX_URI];
  char              userpass[HTTP_MAX_URI];
  char              server[HTTP_MAX_URI];
  int               port;
  char              resource[HTTP_MAX_URI];
  http_encryption_t encryption;
  char              username[33];
  char              *password;
  char              encoded[255];
  int               bytes;
  char              buffer[1024];


  /* Check the command-line. */
  if (argc != 2)
  {
    puts("Usage: browse <URL>");
    return (1);
  }

  /* Separate the URL into its components. */
  httpSeparate(argv[1], scheme, userpass, server, &port, resource);

  /* Determine if we need to use SSL. */
  if (strcmp(scheme, "https") == 0)
    encryption = HTTP_ENCRYPT_ALWAYS;
  else
    encryption = HTTP_ENCRYPT_IF_REQUESTED;

  /* Connect to the server. */
  if ((http = httpConnectEncrypt(server, port, encryption)) == NULL)
  {
    perror(server);
    return (1);
  }

  /* Encode the userpass string. */
  if (userpass[0])
  {
    strcpy(encoded, "Basic ");
    httpEncode64(encoded + 6, userpass);
  }
  else
    encoded[0] = '\0';

  /* Send a GET request, retrying as necessary... */
  do
  {
    /* Set HTTP fields and send the request. */
    httpClearFields(http);
    httpSetField(http, HTTP_FIELD_AUTHORIZATION, encoded);
    httpGet(http, resource);

    /* Wait for a response from the server. */
    while ((status = httpUpdate(http)) == HTTP_CONTINUE);

    /* Do authentication or encryption as needed. */
    if (status == HTTP_UNAUTHORIZED)
    {
      /* Get the username and password. */
      printf("Username: ");
      if (gets(username) == NULL)
        break;

      if ((password = getpass("Password: ")) == NULL)
        break;

      /* Encode the username and password */
      sprintf(userpass, "%s:%s", username, password);
      strcpy(encoded, "Basic ");
      httpEncode64(encoded + 6, userpass);

      /* Flush the error message. */
      httpFlush(http);
    }
    else if (status == HTTP_UPGRADE_REQUIRED)
    {
      /* Flush the error message. */
      httpFlush(http);

      /* Upgrade to encryption */
      httpEncryption(http, HTTP_ENCRYPT_REQUIRED);
    }
  }
  while (status == HTTP_UPGRADE_REQUIRED ||
         status == HTTP_UNAUTHORIZED);

  /* Now display the system error or data from the server. */
  if (status == HTTP_ERROR)
  {
    printf("A system error occurred:\n\t%s\n",
           strerror(httpError(http)));
  }
  else
  {
    while ((bytes = httpRead(http, buffer, sizeof(buffer) - 1)) > 0)
    {
      buffer[bytes] = '\0';
      fputs(buffer, stdout);
    }
  }

  /* Close the server connection and delete the HTTP object. */
  httpClose(http);

  /* Return with no error */
  return (0);
}