857158451b
1.Remove void cast for function because many place ignore the returned value witout cast 2.Replace void cast for variable with UNUSED macro Change-Id: Ie644129a563244a6397036789c4c3ea83c4e9b09 Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
1711 lines
48 KiB
C
1711 lines
48 KiB
C
/****************************************************************************
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* system/zmodem/zm_receive.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* References:
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* "The ZMODEM Inter Application File Transfer Protocol", Chuck Forsberg,
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* Omen Technology Inc., October 14, 1988
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*
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* This is an original work, but I want to make sure that credit is given
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* where due: Parts of the state machine design were inspired by the
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* Zmodem library of Edward A. Falk, dated January, 1995. License
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* unspecified.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <errno.h>
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#include "system/zmodem.h"
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#include "zm.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* Zmodem receive states.
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*
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* A simple transaction, one file, no errors, no CHALLENGE, overlapped I/O:
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* These happen when zm_read() is called:
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*
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* Sender Receiver State
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* -------------- ------------ --------
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* "rz\r" ---->
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* ZRQINIT ---->
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* <---- ZRINIT ZMR_START
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* ZSINIT ---->
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* <---- ZACK ZMR_INITWAIT
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* ZFILE ---->
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* <---- ZRPOS ZMR_FILEINFO
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* ZDATA ---->
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* <---- ZCRC ZMR_CRCWAIT
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* ZCRC ----> ZMR_READREADY
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* Data packets ----> ZMR_READING
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* Last packet ---->
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* ZEOF ---->
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* <---- ZRINIT
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* ZFIN ---->
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* <---- ZFIN ZMR_FINISH
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* OO ----> ZMR_DONE
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*/
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enum zmrs_e
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{
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ZMR_START = 0, /* Sent ZRINIT, waiting for ZFILE or ZSINIT */
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ZMR_INITWAIT, /* Received ZSINIT, sent ZACK, waiting for ZFILE */
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ZMR_FILEINFO, /* Received ZFILE, sent ZRPOS, waiting for filename in ZDATA */
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ZMR_CRCWAIT, /* Received ZDATA filename, send ZCRC, wait for ZCRC response */
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ZMR_READREADY, /* Received ZDATA filename and ZCRC, ready for data packets */
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ZMR_READING, /* Reading data */
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ZMR_FINISH, /* Received ZFIN, sent ZFIN, waiting for "OO" or ZRQINIT */
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ZMR_COMMAND, /* Waiting for command data */
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ZMR_MESSAGE, /* Waiting for message from receiver */
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ZMR_DONE /* Finished with transfer */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* Transition actions */
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static int zmr_zrinit(FAR struct zm_state_s *pzm);
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static int zmr_zsinit(FAR struct zm_state_s *pzm);
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static int zmr_zsrintdata(FAR struct zm_state_s *pzm);
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static int zmr_startto(FAR struct zm_state_s *pzm);
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static int zmr_freecnt(FAR struct zm_state_s *pzm);
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static int zmr_zcrc(FAR struct zm_state_s *pzm);
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static int zmr_nakcrc(FAR struct zm_state_s *pzm);
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static int zmr_zfile(FAR struct zm_state_s *pzm);
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static int zmr_zdata(FAR struct zm_state_s *pzm);
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static int zmr_badrpos(FAR struct zm_state_s *pzm);
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static int zmr_filename(FAR struct zm_state_s *pzm);
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static int zmr_filedata(FAR struct zm_state_s *pzm);
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static int zmr_rcvto(FAR struct zm_state_s *pzm);
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static int zmr_fileto(FAR struct zm_state_s *pzm);
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static int zmr_cmddata(FAR struct zm_state_s *pzm);
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static int zmr_zeof(FAR struct zm_state_s *pzm);
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static int zmr_zfin(FAR struct zm_state_s *pzm);
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static int zmr_finto(FAR struct zm_state_s *pzm);
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static int zmr_oo(FAR struct zm_state_s *pzm);
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static int zmr_message(FAR struct zm_state_s *pzm);
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static int zmr_zstderr(FAR struct zm_state_s *pzm);
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static int zmr_cmdto(FAR struct zm_state_s *pzm);
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static int zmr_doneto(FAR struct zm_state_s *pzm);
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static int zmr_error(FAR struct zm_state_s *pzm);
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/* Internal helpers */
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static int zmr_parsefilename(FAR struct zmr_state_s *pzmr,
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FAR const uint8_t *namptr);
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static int zmr_openfile(FAR struct zmr_state_s *pzmr, uint32_t crc);
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static int zmr_fileerror(FAR struct zmr_state_s *pzmr, uint8_t type,
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uint32_t data);
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static void zmr_filecleanup(FAR struct zmr_state_s *pzmr);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Events handled in state ZMR_START - Sent ZRINIT, waiting for ZFILE or
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* ZSINIT
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*/
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static const struct zm_transition_s g_zmr_start[] =
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{
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{ZME_SINIT, false, ZMR_INITWAIT, zmr_zsinit},
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{ZME_FILE, false, ZMR_FILEINFO, zmr_zfile},
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{ZME_RQINIT, false, ZMR_START, zmr_zrinit},
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{ZME_FIN, true, ZMR_FINISH, zmr_zfin},
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{ZME_NAK, true, ZMR_START, zmr_zrinit},
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{ZME_FREECNT, false, ZMR_START, zmr_freecnt},
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{ZME_COMMAND, false, ZMR_COMMAND, zmr_cmddata},
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{ZME_STDERR, false, ZMR_MESSAGE, zmr_message},
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{ZME_TIMEOUT, false, ZMR_START, zmr_startto},
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{ZME_ERROR, false, ZMR_START, zmr_error}
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};
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/* Events handled in state ZMR_INITWAIT - Received ZSINIT, sent ZACK,
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* waiting for ZFILE.
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*/
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static const struct zm_transition_s g_zmr_initwait[] =
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{
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{ZME_DATARCVD, false, ZMR_START, zmr_zsrintdata},
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{ZME_TIMEOUT, false, ZMR_INITWAIT, zmr_rcvto},
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{ZME_ERROR, false, ZMR_INITWAIT, zmr_error}
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};
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/* Events handled in state ZMR_FILEINFO - eceived ZFILE, sent ZRPOS, waiting
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* for filename in ZDATA
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*/
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static const struct zm_transition_s g_zmr_fileinfo[] =
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{
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{ZME_DATARCVD, false, ZMR_READREADY, zmr_filename},
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{ZME_TIMEOUT, false, ZMR_FILEINFO, zmr_rcvto},
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{ZME_ERROR, false, ZMR_FILEINFO, zmr_error}
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};
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/* Events handled in state ZMR_CRCWAIT - Received ZDATA filename, send ZCRC,
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* wait for ZCRC response
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*/
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static const struct zm_transition_s g_zmr_crcwait[] =
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{
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{ZME_CRC, false, ZMR_READREADY, zmr_zcrc},
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{ZME_NAK, false, ZMR_CRCWAIT, zmr_nakcrc},
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{ZME_RQINIT, true, ZMR_START, zmr_zrinit},
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{ZME_FIN, true, ZMR_FINISH, zmr_zfin},
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{ZME_TIMEOUT, false, ZMR_CRCWAIT, zmr_fileto},
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{ZME_ERROR, false, ZMR_CRCWAIT, zmr_error}
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};
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/* Events handled in state ZMR_READREADY - Received ZDATA filename and ZCRC,
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* ready for data packets
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*/
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static const struct zm_transition_s g_zmr_readready[] =
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{
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{ZME_DATA, false, ZMR_READING, zmr_zdata},
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{ZME_NAK, false, ZMR_READREADY, zmr_badrpos},
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{ZME_EOF, false, ZMR_START, zmr_zeof},
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{ZME_RQINIT, true, ZMR_START, zmr_zrinit},
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{ZME_FILE, false, ZMR_READREADY, zmr_badrpos},
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{ZME_FIN, true, ZMR_FINISH, zmr_zfin},
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{ZME_TIMEOUT, false, ZMR_READREADY, zmr_fileto},
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{ZME_ERROR, false, ZMR_READREADY, zmr_error}
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};
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/* Events handled in the state ZMR_READING - Reading data */
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static const struct zm_transition_s g_zmr_reading[] =
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{
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{ZME_RQINIT, true, ZMR_START, zmr_zrinit},
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{ZME_FILE, false, ZMR_FILEINFO, zmr_zfile},
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{ZME_NAK, true, ZMR_READREADY, zmr_badrpos},
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{ZME_FIN, true, ZMR_FINISH, zmr_zfin},
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{ZME_DATA, false, ZMR_READING, zmr_zdata},
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{ZME_EOF, true, ZMR_START, zmr_zeof},
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{ZME_DATARCVD, false, ZMR_READING, zmr_filedata},
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{ZME_TIMEOUT, false, ZMR_READING, zmr_fileto},
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{ZME_ERROR, false, ZMR_READING, zmr_error}
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};
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/* Events handled in the state ZMR_FINISH - Sent ZFIN, waiting for "OO" or ZRQINIT */
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static const struct zm_transition_s g_zmr_finish[] =
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{
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{ZME_RQINIT, true, ZMR_START, zmr_zrinit},
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{ZME_FILE, true, ZMR_FILEINFO, zmr_zfile},
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{ZME_NAK, true, ZMR_FINISH, zmr_zfin},
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{ZME_FIN, true, ZMR_FINISH, zmr_zfin},
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{ZME_TIMEOUT, false, ZMR_READING, zmr_finto},
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{ZME_OO, false, ZMR_READING, zmr_oo},
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{ZME_ERROR, false, ZMR_FINISH, zmr_error}
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};
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/* Events handled in the state ZMR_COMMAND - Waiting for command data */
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static const struct zm_transition_s g_zmr_command[] =
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{
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{ZME_DATARCVD, false, ZMR_COMMAND, zmr_cmddata},
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{ZME_TIMEOUT, false, ZMR_COMMAND, zmr_cmdto},
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{ZME_ERROR, false, ZMR_COMMAND, zmr_error}
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};
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/* Events handled in ZMR_MESSAGE - Waiting for ZSTDERR data */
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static struct zm_transition_s g_zmr_message[] =
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{
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{ZME_DATARCVD, false, ZMR_MESSAGE, zmr_zstderr},
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{ZME_TIMEOUT, false, ZMR_MESSAGE, zmr_cmdto},
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{ZME_ERROR, false, ZMR_MESSAGE, zmr_error}
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};
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/* Events handled in ZMR_DONE -- Finished with transfer. Waiting for "OO" or */
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static struct zm_transition_s g_zmr_done[] =
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{
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{ZME_TIMEOUT, false, ZMR_DONE, zmr_doneto},
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{ZME_ERROR, false, ZMR_DONE, zmr_error}
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};
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/* State x Event table for Zmodem receive. The order of states must
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* exactly match the order defined in enum zmrs_e
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*/
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static const struct zm_transition_s *g_zmr_evtable[] =
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{
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g_zmr_start, /* ZMR_START: Sent ZRINIT, waiting for ZFILE or ZSINIT */
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g_zmr_initwait, /* ZMR_INITWAIT: Received ZSINIT, sent ZACK, waiting for ZFILE */
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g_zmr_fileinfo, /* XMRS_FILENAME: Received ZFILE, sent ZRPOS, waiting for ZDATA */
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g_zmr_crcwait, /* ZMR_CRCWAIT: Received ZDATA, send ZCRC, wait for ZCRC */
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g_zmr_readready, /* ZMR_READREADY: Received ZCRC, ready for data packets */
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g_zmr_reading, /* ZMR_READING: Reading data */
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g_zmr_finish, /* ZMR_FINISH: Sent ZFIN, waiting for "OO" or ZRQINIT */
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g_zmr_command, /* ZMR_COMMAND: Waiting for command data */
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g_zmr_message, /* ZMR_MESSAGE: Receiver wants to print a message */
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g_zmr_done /* ZMR_DONE: Transfer is complete */
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: zmr_zrinit
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*
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* Description:
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* Resend ZRINIT header in response to ZRQINIT or ZNAK header
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*
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* Paragraph 9.5 "If the receiver cannot overlap serial and disk I/O, it
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* uses the ZRINIT frame to specify a buffer length which the sender will
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* not overflow. The sending program sends a ZCRCW data subpacket and
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* waits for a ZACK header before sending the next segment of the file."
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*
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****************************************************************************/
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static int zmr_zrinit(FAR struct zm_state_s *pzm)
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{
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FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
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uint8_t buf[4];
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zmdbg("ZMR_STATE %d:->%d Send ZRINIT\n", pzm->state, ZMR_START);
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pzm->state = ZMR_START;
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pzm->flags &= ~ZM_FLAG_OO; /* In case we get here from ZMR_FINISH */
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/* Send ZRINIT */
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pzm->timeout = CONFIG_SYSTEM_ZMODEM_RESPTIME;
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buf[0] = CONFIG_SYSTEM_ZMODEM_PKTBUFSIZE & 0xff;
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buf[1] = (CONFIG_SYSTEM_ZMODEM_PKTBUFSIZE >> 8) & 0xff;
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buf[2] = 0;
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buf[3] = pzmr->rcaps;
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return zm_sendhexhdr(pzm, ZRINIT, buf);
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}
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/****************************************************************************
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* Name: zmr_zsinit
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*
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* Description:
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* Received a ZSINIT header in response to ZRINIT
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*
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****************************************************************************/
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static int zmr_zsinit(FAR struct zm_state_s *pzm)
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{
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FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
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zmdbg("ZMR_STATE %d: Received ZSINIT header\n", pzm->state);
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/* Get the sender's capabilities */
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pzmr->scaps = pzm->hdrdata[4];
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/* Does the sender expect control characters to be escaped? */
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pzm->flags &= ~ZM_FLAG_ESCCTRL;
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if ((pzmr->scaps & TESCCTL) != 0)
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{
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pzm->flags |= ZM_FLAG_ESCCTRL;
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}
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/* Setup to receive a data packet. Enter PSTATE_DATA */
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zm_readstate(pzm);
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return OK;
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}
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/****************************************************************************
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* Name: zmr_startto
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*
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* Description:
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* Timed out waiting for ZSINIT or ZFILE.
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*
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****************************************************************************/
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static int zmr_startto(FAR struct zm_state_s *pzm)
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{
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FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
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pzmr->ntimeouts++;
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zmdbg("ZMR_STATE %d: %d timeouts waiting for ZSINIT or ZFILE\n",
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pzm->state, pzmr->ntimeouts);
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if (pzmr->ntimeouts < 4)
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{
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/* Send ZRINIT again */
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return zmr_zrinit(pzm);
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}
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/* This will stop the file transfer */
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return -ETIMEDOUT;
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}
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/****************************************************************************
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* Name: zmr_zsrintdata
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*
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* Description:
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* Received the rest of the ZSINIT packet.
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*
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****************************************************************************/
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static int zmr_zsrintdata(FAR struct zm_state_s *pzm)
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{
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FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
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uint8_t by[4];
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zmdbg("PSTATE %d:%d->%d:%d. Received the rest of the ZSINIT packet\n",
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pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
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pzm->pstate = PSTATE_IDLE;
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pzm->psubstate = PIDLE_ZPAD;
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/* NAK if the CRC was bad */
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if ((pzm->flags & ZM_FLAG_CRKOK) == 0)
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{
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return zm_sendhexhdr(pzm, ZNAK, g_zeroes);
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}
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/* Release any previously allocated attention strings */
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if (pzmr->attn != NULL)
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{
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free(pzmr->attn);
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}
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/* Get the new attention string */
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pzmr->attn = NULL;
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if (pzm->pktbuf[0] != '\0')
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{
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pzmr->attn = strdup((char *)pzm->pktbuf);
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}
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/* And send ZACK */
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zm_be32toby(CONFIG_SYSTEM_ZMODEM_SERIALNO, by);
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return zm_sendhexhdr(pzm, ZACK, by);
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}
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|
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/****************************************************************************
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* Name: zmr_freecnt
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*
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* Description:
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* TODO: This is supposed to return the amount of free space on the media.
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* We just return a really big number now.
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*
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****************************************************************************/
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static int zmr_freecnt(FAR struct zm_state_s *pzm)
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{
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uint8_t by[4];
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zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
zm_be32toby(0xffffffff, by);
|
|
return zm_sendhexhdr(pzm, ZACK, by);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zcrc
|
|
*
|
|
* Description:
|
|
* Received file CRC. Need to accept or reject it.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zcrc(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
/* Get the remote file CRC */
|
|
|
|
pzmr->crc = zm_bytobe32(pzm->hdrdata);
|
|
|
|
/* And create the local file */
|
|
|
|
zmdbg("ZMR_STATE %d: CRC=%08x call zmr_openfile\n", pzmr->crc, pzm->state);
|
|
return zmr_openfile(pzmr, zm_bytobe32(pzm->hdrdata + 1));
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_nakcrc
|
|
*
|
|
* Description:
|
|
* The sender responded to ZCRC with NAK. Resend the ZCRC.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_nakcrc(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d: Send ZCRC\n", pzm->state);
|
|
return zm_sendhexhdr(pzm, ZCRC, g_zeroes);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zfile
|
|
*
|
|
* Description:
|
|
* Received ZFILE. Cache the flags and set up to receive filename in ZDATA.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zfile(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
pzm->nerrors = 0;
|
|
pzm->flags &= ~ZM_FLAG_OO; /* In case we get here from ZMR_FINISH */
|
|
|
|
/* Cache flags (skipping of the initial header type byte) */
|
|
|
|
pzmr->f0 = pzmr->cmn.hdrdata[4];
|
|
pzmr->f1 = pzmr->cmn.hdrdata[3];
|
|
#if 0 /* Not used */
|
|
pzmr->f2 = pzmr->cmn.hdrdata[2];
|
|
pzmr->f3 = pzmr->cmn.hdrdata[1];
|
|
#endif
|
|
|
|
/* Setup to receive a data packet. Enter PSTATE_DATA */
|
|
|
|
zm_readstate(pzm);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zdata
|
|
*
|
|
* Description:
|
|
* Received ZDATA header
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zdata(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
/* Paragraph 8.2: "The receiver compares the file position in the ZDATA
|
|
* header with the number of characters successfully received to the file.
|
|
* If they do not agree, a ZRPOS error response is generated to force the
|
|
* sender to the right position within the file."
|
|
*/
|
|
|
|
if (zm_bytobe32(pzm->hdrdata + 1) != pzmr->offset)
|
|
{
|
|
/* Execute the Attn sequence and then send a ZRPOS header with the
|
|
* correct position within the file.
|
|
*/
|
|
|
|
zmdbg("Bad position, send ZRPOS(%ld)\n",
|
|
(unsigned long)pzmr->offset);
|
|
|
|
return zmr_fileerror(pzmr, ZRPOS, (uint32_t)pzmr->offset);
|
|
}
|
|
|
|
/* Setup to receive a data packet. Enter PSTATE_DATA */
|
|
|
|
zm_readstate(pzm);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_badrpos
|
|
*
|
|
* Description:
|
|
* Last ZRPOS was bad, resend it
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_badrpos(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
uint8_t by[4];
|
|
|
|
zmdbg("ZMR_STATE %d: Send ZRPOS(%ld)\n", pzm->state, (unsigned long)pzmr->offset);
|
|
|
|
/* Re-send ZRPOS */
|
|
|
|
zm_be32toby(pzmr->offset, by);
|
|
return zm_sendhexhdr(pzm, ZRPOS, by);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_filename
|
|
*
|
|
* Description:
|
|
* Received file information
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_filename(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
FAR const uint8_t *pktptr;
|
|
unsigned long filesize;
|
|
unsigned long timestamp;
|
|
unsigned long bremaining;
|
|
int mode;
|
|
int serialno;
|
|
int fremaining;
|
|
int filetype;
|
|
int ret;
|
|
|
|
zmdbg("PSTATE %d:%d->%d:%d\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
/* Back to the IDLE state */
|
|
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
|
|
/* Verify that the CRC was correct */
|
|
|
|
if ((pzm->flags & ZM_FLAG_CRKOK) == 0)
|
|
{
|
|
zmdbg("ZMR_STATE %d->%d: ERROR: Bad CRC, send ZNAK\n",
|
|
pzm->state, ZMR_START);
|
|
|
|
/* Send NACK if the CRC is bad */
|
|
|
|
pzm->state = ZMR_START;
|
|
return zm_sendhexhdr(pzm, ZNAK, g_zeroes);
|
|
}
|
|
|
|
/* Discard any previous local file names */
|
|
|
|
if (pzmr->filename != NULL)
|
|
{
|
|
free(pzmr->filename);
|
|
pzmr->filename = NULL;
|
|
}
|
|
|
|
/* Parse the new file name from the beginning of the packet and verify
|
|
* that we can use it.
|
|
*/
|
|
|
|
pktptr = pzmr->cmn.pktbuf;
|
|
ret = zmr_parsefilename(pzmr, pktptr);
|
|
|
|
if (ret < 0)
|
|
{
|
|
zmdbg("ZMR_STATE %d->%d: ERROR: Failed to parse filename. Send ZSKIP: %d\n",
|
|
pzm->state, ZMR_START, ret);
|
|
|
|
pzmr->cmn.state = ZMR_START;
|
|
return zm_sendhexhdr(&pzmr->cmn, ZSKIP, g_zeroes);
|
|
}
|
|
|
|
/* Skip over the file name (and its NUL termination) */
|
|
|
|
pktptr += (strlen((FAR const char *)pktptr) + 1);
|
|
|
|
/* ZFILE: Following the file name are:
|
|
*
|
|
* length timestamp mode serial-number files-remaining bytes-remaining file-type
|
|
*/
|
|
|
|
filesize = 0;
|
|
timestamp = 0;
|
|
mode = 0;
|
|
serialno = 0;
|
|
fremaining = 0;
|
|
bremaining = 0;
|
|
filetype = 0;
|
|
|
|
sscanf((FAR char *)pktptr, "%lu %lo %o %o %d %lu %d",
|
|
&filesize, ×tamp, &mode, &serialno, &fremaining, &bremaining,
|
|
&filetype);
|
|
|
|
/* Only a few of these values are retained in this implementation */
|
|
|
|
pzmr->filesize = (off_t)filesize;
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
pzmr->timestamp = (time_t)timestamp;
|
|
#endif
|
|
|
|
/* Check if we need to send the CRC */
|
|
|
|
if ((pzmr->f1 & ZMMASK) == ZMCRC)
|
|
{
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_CRCWAIT);
|
|
|
|
pzm->state = ZMR_CRCWAIT;
|
|
return zm_sendhexhdr(pzm, ZCRC, g_zeroes);
|
|
}
|
|
|
|
/* We are ready to receive file data packets */
|
|
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_READREADY);
|
|
|
|
pzm->state = ZMR_READREADY;
|
|
return zmr_openfile(pzmr, 0);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_filedata
|
|
*
|
|
* Description:
|
|
* Received file data
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_filedata(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
uint8_t by[4];
|
|
int ret;
|
|
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
/* Check if the CRC is okay */
|
|
|
|
if ((pzm->flags & ZM_FLAG_CRKOK) == 0)
|
|
{
|
|
zmdbg("ERROR: Bad crc, send ZRPOS(%ld)\n",
|
|
(unsigned long)pzmr->offset);
|
|
|
|
/* No.. increment the count of errors */
|
|
|
|
pzm->nerrors++;
|
|
zmdbg("%d data errors\n", pzm->nerrors);
|
|
|
|
/* If the count of errors exceeds the configurable limit, then cancel
|
|
* the transfer
|
|
*/
|
|
|
|
if (pzm->nerrors > CONFIG_SYSTEM_ZMODEM_MAXERRORS)
|
|
{
|
|
zmdbg("PSTATE %d:%d->%d:%d\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_DATA, PDATA_READ);
|
|
|
|
/* Send the cancel string */
|
|
|
|
zm_remwrite(pzm->remfd, g_canistr, CANISTR_SIZE);
|
|
|
|
/* Enter PSTATE_DATA */
|
|
|
|
zm_readstate(pzm);
|
|
return -EIO;
|
|
}
|
|
else
|
|
{
|
|
zmdbg("PSTATE %d:%d->%d:%d\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_READREADY);
|
|
|
|
/* Revert to the ready to read state and send ZRPOS to get in sync */
|
|
|
|
pzm->state = ZMR_READREADY;
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
return zmr_fileerror(pzmr, ZRPOS, (uint32_t)pzmr->offset);
|
|
}
|
|
}
|
|
|
|
/* Write the packet of data to the file */
|
|
|
|
ret = zm_writefile(pzmr->outfd, pzm->pktbuf, pzm->pktlen,
|
|
pzmr->f0 == ZCNL);
|
|
if (ret < 0)
|
|
{
|
|
int errorcode = errno;
|
|
|
|
/* Could not write to the file. */
|
|
|
|
zmdbg("ERROR: Write to file failed: %d\n", errorcode);
|
|
zmdbg("PSTATE %d:%d->%d:%d\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_FINISH);
|
|
|
|
/* Revert to the IDLE state, send ZFERR, and terminate the transfer
|
|
* with an error.
|
|
*/
|
|
|
|
pzm->state = ZMR_FINISH;
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
zmr_fileerror(pzmr, ZFERR, (uint32_t)errorcode);
|
|
return -errorcode;
|
|
}
|
|
|
|
zmdbg("offset: %ld nchars: %d pkttype: %02x\n",
|
|
(unsigned long)pzmr->offset, pzm->pktlen, pzm->pkttype);
|
|
|
|
pzmr->offset += pzm->pktlen;
|
|
zmdbg("Bytes received: %ld\n", (unsigned long)pzmr->offset);
|
|
|
|
/* If this was the last data subpacket, leave data mode */
|
|
|
|
if (pzm->pkttype == ZCRCE || pzm->pkttype == ZCRCW)
|
|
{
|
|
zmdbg("PSTATE %d:%d->%d:%d: ZCRCE|ZCRCW\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_READREADY);
|
|
|
|
/* Revert to the IDLE state */
|
|
|
|
pzm->state = ZMR_READREADY;
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
}
|
|
else
|
|
{
|
|
/* Setup to receive a data packet. Enter PSTATE_DATA */
|
|
|
|
zm_readstate(pzm);
|
|
}
|
|
|
|
/* Special handle for different packet types:
|
|
*
|
|
* ZCRCW: Non-streaming, ZACK required
|
|
* ZCRCG: Streaming, no response
|
|
* ZCRCQ: Streaming, ZACK required
|
|
* ZCRCE: End of file, no response
|
|
*/
|
|
|
|
if (pzm->pkttype == ZCRCQ || pzm->pkttype == ZCRCW)
|
|
{
|
|
zmdbg("Send ZACK\n");
|
|
|
|
zm_be32toby(pzmr->offset, by);
|
|
return zm_sendhexhdr(pzm, ZACK, by);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_rcvto
|
|
*
|
|
* Description:
|
|
* Timed out waiting:
|
|
*
|
|
* 1) In state ZMR_INITWAIT - Received ZSINIT, waiting for data, or
|
|
* 2) In state XMRS_FILENAME - Received ZFILE, waiting for file _info
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_rcvto(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
/* Increment the count of timeouts */
|
|
|
|
pzmr->ntimeouts++;
|
|
zmdbg("ZMR_STATE %d: Send timeouts: %d\n", pzm->state, pzmr->ntimeouts);
|
|
|
|
/* If the number of timeouts exceeds a limit, then about the transfer */
|
|
|
|
if (pzmr->ntimeouts > 4)
|
|
{
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/* Re-send the ZRINIT header */
|
|
|
|
return zmr_zrinit(pzm);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_fileto
|
|
*
|
|
* Description:
|
|
* Timed out waiting
|
|
* 1) In state ZMR_CRCWAIT - Received filename, waiting for CRC,
|
|
* 2) In state ZMR_READREADY - Received filename, ready to read, or
|
|
* 3) IN state ZMR_READING - Reading data
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_fileto(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
/* Increment the count of timeouts */
|
|
|
|
pzmr->ntimeouts++;
|
|
zmdbg("ZMR_STATE %d: %d send timeouts\n", pzm->state, pzmr->ntimeouts);
|
|
|
|
/* If the number of timeouts exceeds a limit, then restart the transfer */
|
|
|
|
if (pzmr->ntimeouts > 2)
|
|
{
|
|
/* Re-send the ZRINIT header */
|
|
|
|
pzmr->ntimeouts = 0;
|
|
return zmr_zrinit(pzm);
|
|
}
|
|
|
|
return pzm->state == ZMR_CRCWAIT ? zmr_nakcrc(pzm) : zmr_badrpos(pzm);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zeof
|
|
*
|
|
* Description:
|
|
* Received ZEOF packet. File is now complete
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zeof(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
zmdbg("ZMR_STATE %d: offset=%ld\n", pzm->state, (unsigned long)pzmr->offset);
|
|
|
|
/* Verify the file length */
|
|
|
|
if (zm_bytobe32(pzm->hdrdata + 1) != pzmr->offset)
|
|
{
|
|
zmdbg("ERROR: Bad length\n");
|
|
zmdbg("ZMR_STATE %d->%d\n", pzm->state, ZMR_READREADY);
|
|
|
|
pzm->state = ZMR_READREADY;
|
|
return OK; /* it was probably spurious */
|
|
}
|
|
|
|
/* Close the output file.
|
|
* TODO: if we can't close the file, send a ZFERR.
|
|
*/
|
|
|
|
close(pzmr->outfd);
|
|
pzmr->outfd = -1;
|
|
|
|
/* TODO: Set the file timestamp and access privileges */
|
|
|
|
/* Re-send the ZRINIT header so that we are ready for the next file */
|
|
|
|
return zmr_zrinit(pzm);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_cmddata
|
|
*
|
|
* Description:
|
|
* Received command data (not implemented)
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_cmddata(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zfin
|
|
*
|
|
* Description:
|
|
* Received ZFIN, respond with ZFIN. Wait for ZRQINIT or "OO"
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zfin(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
/* We are finished and will send ZFIN. Transition to the ZMR_FINISH state
|
|
* and wait for either ZRQINIT meaning that another file follows or "OO"
|
|
* meaning that we are all done.
|
|
*/
|
|
|
|
zmdbg("PSTATE %d:%d->%d:%d: Send ZFIN\n",
|
|
pzm->pstate, pzm->psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
pzm->pstate = ZMR_FINISH;
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
|
|
/* Release any resource still held from the last file transfer */
|
|
|
|
zmr_filecleanup(pzmr);
|
|
|
|
/* Let the parser no that "OO" is a possibility */
|
|
|
|
pzm->flags |= ZM_FLAG_OO;
|
|
|
|
/* Now send the ZFIN response */
|
|
|
|
return zm_sendhexhdr(pzm, ZFIN, g_zeroes);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_finto
|
|
*
|
|
* Description:
|
|
* Timedout in state ZMR_FINISH - Sent ZFIN, waiting for "OO"
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_finto(FAR struct zm_state_s *pzm)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s *)pzm;
|
|
|
|
/* Increment the count of timeouts (not really necessary because we are
|
|
* done).
|
|
*/
|
|
|
|
pzmr->ntimeouts++;
|
|
pzm->flags &= ~ZM_FLAG_OO; /* No longer expect "OO" */
|
|
|
|
zmdbg("ZMR_STATE %d: %d send timeouts\n", pzm->state, pzmr->ntimeouts);
|
|
|
|
/* And terminate the reception with a timeout error */
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_oo
|
|
*
|
|
* Description:
|
|
* Received "OO" in the ZMR_FINISH state. We are finished!
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_oo(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d: Done\n", pzm->state);
|
|
return ZM_XFRDONE;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_message
|
|
*
|
|
* Description:
|
|
* The remote system wants to put a message on stderr
|
|
*
|
|
****************************************************************************/
|
|
|
|
int zmr_message(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
/* Setup to receive a data packet. Enter PSTATE_DATA */
|
|
|
|
zm_readstate(pzm);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_zstderr
|
|
*
|
|
* Description:
|
|
* The remote system wants to put a message on stderr
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_zstderr(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d\n", pzm->state);
|
|
|
|
pzm->pktbuf[pzm->pktlen] = '\0';
|
|
fprintf(stderr, "Message: %s", (char*)pzm->pktbuf);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_cmdto
|
|
*
|
|
* Description:
|
|
* Timed out waiting for command or stderr data
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_cmdto(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d: Timed out: No command received\n", pzm->state);
|
|
|
|
/* Terminate the reception with a timeout error */
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_doneto
|
|
*
|
|
* Description:
|
|
* Timed out in ZMR_DONE state
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_doneto(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d: Timeout if ZMR_DONE\n", pzm->state);
|
|
|
|
/* Terminate the reception with a timeout error */
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_error
|
|
*
|
|
* Description:
|
|
* An unexpected event occurred in this state
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_error(FAR struct zm_state_s *pzm)
|
|
{
|
|
zmdbg("ZMR_STATE %d: Protocol error, header=%d\n",
|
|
pzm->state, pzm->hdrdata[0]);
|
|
|
|
pzm->flags |= ZM_FLAG_WAIT;
|
|
pzm->flags &= ~ZM_FLAG_OO; /* In case we get here from ZMR_FINISH */
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_parsefilename
|
|
*
|
|
* Description:
|
|
* Get an appropriate path to open. The path is returned in pzmr->filename.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_parsefilename(FAR struct zmr_state_s *pzmr,
|
|
FAR const uint8_t *namptr)
|
|
{
|
|
static uint32_t uniqno = 0;
|
|
struct stat buf;
|
|
uint8_t f0;
|
|
uint8_t f1;
|
|
bool exists;
|
|
int ret;
|
|
|
|
DEBUGASSERT(pzmr && !pzmr->filename);
|
|
|
|
/* Don't allow absolute pathes */
|
|
|
|
if (*namptr == '/')
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Extend the relative path to the file storage directory */
|
|
|
|
asprintf(&pzmr->filename, "%s/%s", pzmr->pathname, namptr);
|
|
if (!pzmr->filename)
|
|
{
|
|
zmdbg("ERROR: Failed to allocate full path %s/%s\n",
|
|
CONFIG_SYSTEM_ZMODEM_MOUNTPOINT, namptr);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Check if the file already exists at this path */
|
|
|
|
ret = stat(pzmr->filename, &buf);
|
|
if (ret == OK)
|
|
{
|
|
exists = true;
|
|
}
|
|
else
|
|
{
|
|
int errcode = errno;
|
|
if (errcode == ENOENT)
|
|
{
|
|
exists = false;
|
|
}
|
|
else
|
|
{
|
|
zmdbg("ERROR: stat of %s failed: %d\n", pzmr->filename, errcode);
|
|
ret = -errcode;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
|
|
/* If remote end has not specified transfer flags (f0), we can use the
|
|
* local definitions. We will stick with f0=f1=0 which will be a binary
|
|
* file.
|
|
*/
|
|
|
|
f0 = pzmr->f0;
|
|
f1 = pzmr->f1;
|
|
|
|
zmdbg("File %s f0=%02x, f1=%-2x, exists=%d, size=%ld/%ld\n",
|
|
pzmr->filename, f0, f1, exists, (long)buf.st_size,
|
|
(long)pzmr->filesize);
|
|
|
|
/* Are we appending to an existing file? */
|
|
|
|
if (f0 == ZCRESUM)
|
|
{
|
|
/* One corner case: The file exists and is already the requested
|
|
* size. We already have the file!
|
|
*/
|
|
|
|
if (exists && buf.st_size == pzmr->filesize)
|
|
{
|
|
zmdbg("ZCRESUM: Rejected\n");
|
|
ret = -EEXIST;
|
|
goto errout_with_filename;
|
|
}
|
|
|
|
/* Otherwise, indicate that we will append to the file (whether it
|
|
* exists yet or not.
|
|
*/
|
|
|
|
pzmr->cmn.flags |= ZM_FLAG_APPEND;
|
|
}
|
|
|
|
/* Check if the first is required to be there and fail if it is not */
|
|
|
|
if (!exists && (f1 & ZMSKNOLOC) != 0)
|
|
{
|
|
zmdbg("ZMSKNOLOC: Rejected\n");
|
|
ret = -ENOENT;
|
|
goto errout_with_filename;
|
|
}
|
|
|
|
/* Now perform whatever actions are required for this file */
|
|
|
|
switch (f1 & ZMMASK)
|
|
{
|
|
case ZMNEWL: /* Transfer if source newer or longer */
|
|
{
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
zmdbg("ZMNEWL: timestamp=%08lx st_mtime=%08lx\n",
|
|
(unsigned long)pzmr->timestamp, (unsigned long)buf.st_mtime);
|
|
#endif
|
|
zmdbg("ZMNEWL: filesize=%08lx st_size=%08lx\n",
|
|
(unsigned long)pzmr->filesize, (unsigned long)buf.st_size);
|
|
|
|
if (exists &&
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
pzmr->timestamp <= buf.st_mtime &&
|
|
#endif
|
|
pzmr->filesize <= buf.st_size)
|
|
{
|
|
zmdbg("ZMNEWL: Rejected\n");
|
|
ret = -EPERM;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ZMCRC: /* Transfer if different CRC or length */
|
|
{
|
|
uint32_t crc = zm_filecrc(&pzmr->cmn, pzmr->filename);
|
|
zmdbg("ZMCRC: crc=%08x vs. %08x\n", pzmr->crc, crc);
|
|
zmdbg(" filesize=%08lx st_size=%08lx\n",
|
|
(unsigned long)pzmr->filesize, (unsigned long)buf.st_size);
|
|
|
|
if (exists &&
|
|
pzmr->filesize == buf.st_size &&
|
|
pzmr->crc == crc)
|
|
{
|
|
zmdbg("ZMCRC: Rejected\n");
|
|
ret = -EPERM;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ZMAPND: /* Append to existing file, if any */
|
|
pzmr->cmn.flags |= ZM_FLAG_APPEND;
|
|
|
|
case 0: /* Implementation dependent */
|
|
case ZMCLOB: /* Replace existing file */
|
|
break;
|
|
|
|
case ZMNEW: /* Transfer if source is newer */
|
|
{
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
zmdbg("ZMNEWL: timestamp=%08lx st_mtime=%08lx\n",
|
|
(unsigned long)pzmr->timestamp, (unsigned long)buf.st_mtime);
|
|
|
|
if (exists &&
|
|
pzmr->timestamp <= buf.st_mtime)
|
|
{
|
|
zmdbg("ZMNEW: Rejected\n");
|
|
ret = -EPERM;
|
|
goto errout_with_filename;
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
|
|
case ZMDIFF: /* Transfer if dates or lengths different */
|
|
{
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
zmdbg("ZMDIFF: timestamp=%08lx st_mtime=%0l8x\n",
|
|
(unsigned long)pzmr->timestamp, (unsigned long)buf.st_mtime);
|
|
#endif
|
|
zmdbg("ZMDIFF: filesize=%08lx st_size=%08lx\n",
|
|
(unsigned long)pzmr->filesize, (unsigned long)buf.st_size);
|
|
|
|
if (exists &&
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_TIMESTAMPS
|
|
pzmr->timestamp == buf.st_mtime &&
|
|
#endif
|
|
pzmr->filesize == buf.st_size)
|
|
{
|
|
zmdbg("ZMDIFF: Rejected\n");
|
|
ret = -EPERM;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ZMPROT: /* Protect: transfer only if dest doesn't exist */
|
|
{
|
|
if (exists)
|
|
{
|
|
zmdbg("ZMPROT: Rejected\n");
|
|
ret = -EPERM;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ZMCHNG: /* Change filename if destination exists */
|
|
{
|
|
FAR char *candidate;
|
|
|
|
/* Does the file exist? */
|
|
|
|
if (exists)
|
|
{
|
|
/* Yes.. loop until we create a unique file name */
|
|
|
|
while (exists)
|
|
{
|
|
/* Create a candidate file name */
|
|
|
|
asprintf(&candidate, "%s_%d", pzmr->filename, ++uniqno);
|
|
if (!candidate)
|
|
{
|
|
zmdbg("ERROR: Failed to allocate candidate %s_%d\n",
|
|
pzmr->filename, uniqno);
|
|
ret = -ENOMEM;
|
|
goto errout_with_filename;
|
|
}
|
|
|
|
/* Does the candidate also exist? */
|
|
|
|
ret = stat(candidate, &buf);
|
|
if (ret < 0)
|
|
{
|
|
int errcode = errno;
|
|
if (errcode != ENOENT)
|
|
{
|
|
zmdbg("ERROR: stat of %s failed: %d\n", candidate, errcode);
|
|
}
|
|
|
|
/* Free the old filename and replace it with the candidate */
|
|
|
|
free(pzmr->filename);
|
|
pzmr->filename = candidate;
|
|
exists = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ret = -EINVAL;
|
|
goto errout_with_filename;
|
|
}
|
|
|
|
/* We have accepted pzmr->filename. If the file exists and we are not
|
|
* appending to it, then unlink the old file now.
|
|
*/
|
|
|
|
if (exists && (pzmr->cmn.flags & ZM_FLAG_APPEND) == 0)
|
|
{
|
|
ret = unlink(pzmr->filename);
|
|
if (ret != OK)
|
|
{
|
|
int errorcode = errno;
|
|
|
|
zmdbg("ERROR: unlink of %s failed: %d\n", pzmr->filename, errorcode);
|
|
ret = -errorcode;
|
|
goto errout_with_filename;
|
|
}
|
|
}
|
|
|
|
zmdbg("Accepted filename: %s\n", pzmr->filename);
|
|
return OK;
|
|
|
|
errout_with_filename:
|
|
free(pzmr->filename);
|
|
pzmr->filename = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_openfile
|
|
*
|
|
* Description:
|
|
* If no output file has been opened to receive the data, then open the
|
|
* file for output whose name is in pzm->pktbuf.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_openfile(FAR struct zmr_state_s *pzmr, uint32_t crc)
|
|
{
|
|
off_t offset;
|
|
uint8_t by[4];
|
|
|
|
/* Has an output file already been opened? Do we have a file name? */
|
|
|
|
if (pzmr->outfd < 0)
|
|
{
|
|
/* No.. We should have a filename from the ZFILE packet? */
|
|
|
|
if (!pzmr->filename)
|
|
{
|
|
zmdbg("No filename!\n");
|
|
goto skip;
|
|
}
|
|
|
|
/* Yes.. then open this file for output */
|
|
|
|
pzmr->outfd = open((FAR char *)pzmr->filename,
|
|
O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
|
if (pzmr->outfd < 0)
|
|
{
|
|
zmdbg("ERROR: Failed to open %s: %d\n", pzmr->filename, errno);
|
|
goto skip;
|
|
}
|
|
}
|
|
|
|
/* Are we appending/resuming a transfer? */
|
|
|
|
offset = 0;
|
|
if (pzmr->f0 == ZCRESUM)
|
|
{
|
|
/* Yes... get the current file position */
|
|
|
|
offset = lseek(pzmr->outfd, 0, SEEK_CUR);
|
|
if (offset == (off_t)-1)
|
|
{
|
|
zmdbg("ERROR: lseek failed: %d\n", errno);
|
|
goto skip;
|
|
}
|
|
}
|
|
|
|
zmdbg("ZMR_STATE %d->%d: Send ZRPOS(%ld)\n",
|
|
pzmr->cmn.state, ZMR_READREADY, (unsigned long)offset);
|
|
|
|
pzmr->offset = offset;
|
|
pzmr->cmn.state = ZMR_READREADY;
|
|
zm_be32toby(pzmr->offset, by);
|
|
return zm_sendhexhdr(&pzmr->cmn, ZRPOS, by);
|
|
|
|
/* We get here on any failures. This file will be skipped. */
|
|
|
|
skip:
|
|
zmdbg("ZMR_STATE %d->%d: Send ZSKIP\n", pzmr->cmn.state, ZMR_START);
|
|
|
|
pzmr->cmn.state = ZMR_START;
|
|
return zm_sendhexhdr(&pzmr->cmn, ZSKIP, g_zeroes);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_fileerror
|
|
*
|
|
* Description:
|
|
* A receiver-detected file error has occurred. Send Attn followed by
|
|
* the specified header (ZRPOS or XFERR).
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int zmr_fileerror(FAR struct zmr_state_s *pzmr, uint8_t type,
|
|
uint32_t data)
|
|
{
|
|
FAR uint8_t *src;
|
|
FAR uint8_t *dest;
|
|
uint8_t by[4];
|
|
|
|
/* Set the state back to IDLE to abort the transfer */
|
|
|
|
zmdbg("PSTATE %d:%d->%d:%d\n",
|
|
pzmr->cmn.pstate, pzmr->cmn.psubstate, PSTATE_IDLE, PIDLE_ZPAD);
|
|
|
|
pzmr->cmn.pstate = PSTATE_IDLE;
|
|
pzmr->cmn.psubstate = PIDLE_ZPAD;
|
|
|
|
/* Send Attn */
|
|
|
|
if (pzmr->attn != NULL)
|
|
{
|
|
ssize_t nwritten;
|
|
int len;
|
|
|
|
/* Copy the attention string to the I/O buffer (pausing is ATTNPSE
|
|
* is encountered.
|
|
*/
|
|
|
|
dest = pzmr->cmn.pktbuf;
|
|
for (src = (FAR void *)pzmr->attn; *src != '\0'; src++)
|
|
{
|
|
if (*src == ATTNBRK )
|
|
{
|
|
#ifdef CONFIG_SYSTEM_ZMODEM_SENDBREAK
|
|
/* Send a break
|
|
* TODO: tcsendbreak() does not yet exist.
|
|
*/
|
|
|
|
tcsendbreak(pzm->remfd, 0);
|
|
#endif
|
|
}
|
|
else if (*src == ATTNPSE)
|
|
{
|
|
/* Pause for 1 second */
|
|
|
|
sleep(1);
|
|
}
|
|
else
|
|
{
|
|
/* Transfer the character */
|
|
|
|
*dest++ = *src;
|
|
}
|
|
}
|
|
|
|
/* Null-terminate and send */
|
|
|
|
*dest++ = '\0';
|
|
|
|
len = strlen((FAR char *)pzmr->cmn.pktbuf);
|
|
nwritten = zm_remwrite(pzmr->cmn.remfd, pzmr->cmn.pktbuf, len);
|
|
if (nwritten < 0)
|
|
{
|
|
zmdbg("ERROR: zm_remwrite failed: %d\n", (int)nwritten);
|
|
return (int)nwritten;
|
|
}
|
|
}
|
|
|
|
/* Send the specified header */
|
|
|
|
zm_be32toby(data, by);
|
|
return zm_sendhexhdr(&pzmr->cmn, type, by);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_filecleanup
|
|
*
|
|
* Description:
|
|
* Release resources tied up by the last file transfer
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void zmr_filecleanup(FAR struct zmr_state_s *pzmr)
|
|
{
|
|
/* Make sure that the file is closed */
|
|
|
|
if (pzmr->outfd >= 0)
|
|
{
|
|
close(pzmr->outfd);
|
|
pzmr->outfd = -1;
|
|
}
|
|
|
|
/* Deallocate the file name and attention strings */
|
|
|
|
if (pzmr->filename)
|
|
{
|
|
free(pzmr->filename);
|
|
pzmr->filename = NULL;
|
|
}
|
|
|
|
if (pzmr->attn)
|
|
{
|
|
free(pzmr->attn);
|
|
pzmr->attn = NULL;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_initialize
|
|
*
|
|
* Description:
|
|
* Initialize for Zmodem receive operation
|
|
*
|
|
* Input Parameters:
|
|
* remfd - The R/W file/socket descriptor to use for communication with the
|
|
* remote peer.
|
|
*
|
|
* Returned Value:
|
|
* An opaque handle that can be use with zmr_receive() and zmr_release().
|
|
*
|
|
****************************************************************************/
|
|
|
|
ZMRHANDLE zmr_initialize(int remfd)
|
|
{
|
|
FAR struct zmr_state_s *pzmr;
|
|
FAR struct zm_state_s *pzm;
|
|
int ret;
|
|
|
|
/* Allocate a new Zmodem receive state structure */
|
|
|
|
pzmr = (FAR struct zmr_state_s*)zalloc(sizeof(struct zmr_state_s));
|
|
if (pzmr)
|
|
{
|
|
/* Initialize the state structure */
|
|
|
|
pzm = &pzmr->cmn;
|
|
pzm->evtable = g_zmr_evtable;
|
|
pzm->state = ZMR_START;
|
|
pzm->pstate = PSTATE_IDLE;
|
|
pzm->psubstate = PIDLE_ZPAD;
|
|
pzm->remfd = remfd;
|
|
pzmr->rcaps = CANFC32 | CANFDX;
|
|
pzmr->outfd = -1;
|
|
|
|
/* Create a timer to handle timeout events */
|
|
|
|
ret = zm_timerinit(pzm);
|
|
if (ret < 0)
|
|
{
|
|
zmdbg("ERROR: zm_timerinit failed: %d\n", ret);
|
|
free(pzmr);
|
|
return (ZMRHANDLE)NULL;
|
|
}
|
|
|
|
/* Note that no action is taken now... a timeout of zero is set (because
|
|
* of the memset). If there is nothing pending, ZRINIT will be sent.
|
|
*/
|
|
|
|
zmdbg("Initial state: %d\n", pzm->state);
|
|
}
|
|
|
|
return (ZMRHANDLE)pzmr;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_receive
|
|
*
|
|
* Description:
|
|
* Receive file(s) sent from the remote peer.
|
|
*
|
|
* Input Parameters:
|
|
* handle - The handler created by zmr_initialize().
|
|
* pathname - The name of the local path to hold the file
|
|
*
|
|
* Returned Value:
|
|
* Zero on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int zmr_receive(ZMRHANDLE handle, FAR const char *pathname)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s*)handle;
|
|
|
|
pzmr->pathname = pathname;
|
|
|
|
/* The first thing that should happen is to receive ZRQINIT from the
|
|
* remote sender. This could take while so use a long timeout.
|
|
*/
|
|
|
|
pzmr->cmn.timeout = CONFIG_SYSTEM_ZMODEM_CONNTIME;
|
|
|
|
/* Then the state machine data pump will do the rest of the job */
|
|
|
|
return zm_datapump(&pzmr->cmn);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: zmr_release
|
|
*
|
|
* Description:
|
|
* Called by the user when there are no more files to receive.
|
|
*
|
|
* Input Parameters:
|
|
* handle - The handler created by zmr_initialize().
|
|
*
|
|
* Returned Value:
|
|
* Zero on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int zmr_release(ZMRHANDLE handle)
|
|
{
|
|
FAR struct zmr_state_s *pzmr = (FAR struct zmr_state_s*)handle;
|
|
int ret;
|
|
|
|
/* Send ZFIN */
|
|
|
|
pzmr->cmn.state = ZMR_FINISH;
|
|
ret = zm_sendhexhdr(&pzmr->cmn, ZFIN, g_zeroes);
|
|
zmdbg("ZMR_STATE %d: Send ZFIN\n", pzmr->cmn.state);
|
|
|
|
/* Release the timer resources */
|
|
|
|
zm_timerrelease(&pzmr->cmn);
|
|
|
|
/* Clean up any resouces that may be held from the last file transfer */
|
|
|
|
zmr_filecleanup(pzmr);
|
|
|
|
/* Then release the receive state structure itself */
|
|
|
|
free(pzmr);
|
|
return ret;
|
|
}
|