Fixed a small memory leak in tftp uploads discovered by curl's memory leak

                                  Changelog

Dan F (16 January 2007)

- Fixed a small memory leak in tftp uploads discovered by curl's memory leak

  detector.  Also changed tftp downloads to URL-unescape the downloaded

  file name.

Daniel (14 January 2007)

- David McCreedy provided libcurl changes for doing HTTP communication on

  non-ASCII platforms. It does add some complexity, most notably with more

{

  int sbytes;

  const char *mode = "octet";

  /* As RFC3617 describes the separator slash is not actually part of the file

     name so we skip the always-present first letter of the path string. */

  char *filename = &state->conn->data->reqdata.path[1];

  char *filename;

  struct SessionHandle *data = state->conn->data;

  CURLcode res = CURLE_OK;

    if(data->set.upload) {

      /* If we are uploading, send an WRQ */

      setpacketevent(&state->spacket, TFTP_EVENT_WRQ);

      filename = curl_easy_unescape(data, filename, 0, NULL);

      state->conn->data->reqdata.upload_fromhere = (char *)&state->spacket.data[4];

      if(data->set.infilesize != -1)

        Curl_pgrsSetUploadSize(data, data->set.infilesize);

      /* If we are downloading, send an RRQ */

      setpacketevent(&state->spacket, TFTP_EVENT_RRQ);

    }

    /* As RFC3617 describes the separator slash is not actually part of the

    file name so we skip the always-present first letter of the path string. */

    filename = curl_easy_unescape(data, &state->conn->data->reqdata.path[1], 0, NULL);

    snprintf((char *)&state->spacket.data[2],

             TFTP_BLOCKSIZE,

             "%s%c%s%c", filename, '\0',  mode, '\0');

    if(sbytes < 0) {

      failf(data, "%s\n", Curl_strerror(state->conn, Curl_sockerrno()));

    }

    Curl_safefree(filename);

    break;

  case TFTP_EVENT_ACK: /* Connected for transmit */