nss.c

  /* Import our model socket  onto the existing file descriptor */
  connssl->handle = PR_ImportTCPSocket(sockfd);
  connssl->handle = SSL_ImportFD(model, connssl->handle);
  if(!connssl->handle)
    goto error;
  PR_Close(model); /* We don't need this any more */

  /* Force handshake on next I/O */
  SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE);

  SSL_SetURL(connssl->handle, conn->host.name);

  /* Force the handshake now */
  if(SSL_ForceHandshakeWithTimeout(connssl->handle,
                                    PR_SecondsToInterval(HANDSHAKE_TIMEOUT))
      != SECSuccess) {
    if(conn->data->set.ssl.certverifyresult!=0)
      curlerr = CURLE_SSL_CACERT;
    goto error;
  }

  display_conn_info(conn, connssl->handle);

  return CURLE_OK;

error:
  err = PR_GetError();
  infof(data, "NSS error %d\n", err);
  if(model)
    PR_Close(model);
  return curlerr;
}

/* return number of sent (non-SSL) bytes */
int Curl_nss_send(struct connectdata *conn,  /* connection data */
                  int sockindex,             /* socketindex */
                  void *mem,                 /* send this data */
                  size_t len)                /* amount to write */
{
  PRInt32 err;
  struct SessionHandle *data = conn->data;
  PRInt32 timeout;
  int rc;

  if(data->set.timeout)
    timeout = PR_MillisecondsToInterval(data->set.timeout);
  else
    timeout = PR_MillisecondsToInterval(DEFAULT_CONNECT_TIMEOUT);

  rc = PR_Send(conn->ssl[sockindex].handle, mem, (int)len, 0, timeout);

  if(rc < 0) {
    err = PR_GetError();

    if(err == PR_IO_TIMEOUT_ERROR) {
      failf(data, "SSL connection timeout");
      return CURLE_OPERATION_TIMEDOUT;
    }

    failf(conn->data, "SSL write: error %d\n", err);
    return -1;
  }
  return rc; /* number of bytes */
}

/*
 * If the read would block we return -1 and set 'wouldblock' to TRUE.
 * Otherwise we return the amount of data read. Other errors should return -1
 * and set 'wouldblock' to FALSE.
 */
ssize_t Curl_nss_recv(struct connectdata * conn, /* connection data */
                      int num,                   /* socketindex */
                      char *buf,                 /* store read data here */
                      size_t buffersize,         /* max amount to read */
                      bool * wouldblock)
{
  ssize_t nread;
  struct SessionHandle *data = conn->data;
  PRInt32 timeout;

  if(data->set.timeout)
    timeout = PR_SecondsToInterval(data->set.timeout);
  else
    timeout = PR_MillisecondsToInterval(DEFAULT_CONNECT_TIMEOUT);

  nread = PR_Recv(conn->ssl[num].handle, buf, (int)buffersize, 0, timeout);
  *wouldblock = FALSE;
  if(nread < 0) {
    /* failed SSL read */
    PRInt32 err = PR_GetError();

    if(err == PR_WOULD_BLOCK_ERROR) {
      *wouldblock = TRUE;
      return -1; /* basically EWOULDBLOCK */
    }
    if(err == PR_IO_TIMEOUT_ERROR) {
      failf(data, "SSL connection timeout");
      return CURLE_OPERATION_TIMEDOUT;
    }
    failf(conn->data, "SSL read: errno %d", err);
    return -1;
  }
  return nread;
}

size_t Curl_nss_version(char *buffer, size_t size)
{
  return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
}
#endif /* USE_NSS */