| 1 |
/* |
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* Copyright (c) 2022 joshua stein <jcs@jcs.org> |
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* |
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* Copyright (C) 1994-1998 T. Teranishi |
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* (C) 2007- TeraTerm Project |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
| 9 |
* 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 the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#include <stdarg.h> |
| 33 |
#include <stdio.h> |
| 34 |
#include <stdlib.h> |
| 35 |
#include <string.h> |
| 36 |
#include <time.h> |
| 37 |
|
| 38 |
#include "crc.h" |
| 39 |
#include "util.h" |
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#include "zmodem.h" |
| 41 |
|
| 42 |
/* #define ZMODEM_DEBUG */ |
| 43 |
|
| 44 |
#define ZMODEM_TIMEOUT 20 |
| 45 |
|
| 46 |
#ifdef ZMODEM_DEBUG |
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#include "logger.h" |
| 48 |
extern struct logger *logger; |
| 49 |
#endif |
| 50 |
|
| 51 |
#define LOBYTE(w) ((unsigned char)(((unsigned short)(w)) & 0xff)) |
| 52 |
#define HIBYTE(w) ((unsigned char)((((unsigned short)(w)) >> 8) & 0xff)) |
| 53 |
#define LOWORD(l) ((unsigned short)(l)) |
| 54 |
#define HIWORD(l) ((unsigned short)(((unsigned long)(l) >> 16) & 0xFFFF)) |
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|
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#define Z_RecvInit 1 |
| 57 |
#define Z_RecvInit2 2 |
| 58 |
#define Z_RecvData 3 |
| 59 |
#define Z_RecvFIN 4 |
| 60 |
#define Z_SendInit 5 |
| 61 |
#define Z_SendInitHdr 6 |
| 62 |
#define Z_SendInitDat 7 |
| 63 |
#define Z_SendFileHdr 8 |
| 64 |
#define Z_SendFileDat 9 |
| 65 |
#define Z_SendDataHdr 10 |
| 66 |
#define Z_SendDataDat 11 |
| 67 |
#define Z_SendDataDat2 12 |
| 68 |
#define Z_SendEOF 13 |
| 69 |
#define Z_SendFIN 14 |
| 70 |
#define Z_SendSkip 15 |
| 71 |
#define Z_Cancel 16 |
| 72 |
#define Z_End 17 |
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|
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#define Z_PktGetPAD 1 |
| 75 |
#define Z_PktGetDLE 2 |
| 76 |
#define Z_PktHdrFrm 3 |
| 77 |
#define Z_PktGetBin 4 |
| 78 |
#define Z_PktGetHex 5 |
| 79 |
#define Z_PktGetHexEOL 6 |
| 80 |
#define Z_PktGetData 7 |
| 81 |
#define Z_PktGetCRC 8 |
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|
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#define ZPAD '*' |
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#define ZDLE 0x18 |
| 85 |
#define ZDLEE 0x58 |
| 86 |
#define ZBIN 'A' |
| 87 |
#define ZHEX 'B' |
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#define ZBIN32 'C' |
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|
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#define ZRQINIT 0 |
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#define ZRINIT 1 |
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#define ZSINIT 2 |
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#define ZACK 3 |
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#define ZFILE 4 |
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#define ZSKIP 5 |
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#define ZNAK 6 |
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#define ZABORT 7 |
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#define ZFIN 8 |
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#define ZRPOS 9 |
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#define ZDATA 10 |
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#define ZEOF 11 |
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#define ZFERR 12 |
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#define ZCRC 13 |
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#define ZCHALLENGE 14 |
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#define ZCOMPL 15 |
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#define ZCAN 16 |
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#define ZFREECNT 17 |
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#define ZCOMMAND 18 |
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#define ZSTDERR 19 |
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|
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#define ZCRCE 'h' |
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#define ZCRCG 'i' |
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#define ZCRCQ 'j' |
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#define ZCRCW 'k' |
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#define ZRUB0 'l' |
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#define ZRUB1 'm' |
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|
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#define ZF0 3 |
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#define ZF1 2 |
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#define ZF2 1 |
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#define ZF3 0 |
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#define ZP0 0 |
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#define ZP1 1 |
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#define ZP2 2 |
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#define ZP3 3 |
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|
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#define CANFDX 0x01 |
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#define CANOVIO 0x02 |
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#define CANBRK 0x04 |
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#define CANCRY 0x08 |
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#define CANLZW 0x10 |
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#define CANFC32 0x20 |
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#define ESCCTL 0x40 |
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#define ESC8 0x80 |
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|
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#define ZCBIN 1 |
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#define ZCNL 2 |
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|
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#define XON 0x11 |
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#define IAC 0xff |
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|
| 142 |
short ZRead1Byte(struct zmodem_session *, unsigned char *); |
| 143 |
void ZPutHex(struct zmodem_session *, short *, unsigned char); |
| 144 |
void ZResetTimeout(struct zmodem_session *, short); |
| 145 |
void ZShHdr(struct zmodem_session *, unsigned char); |
| 146 |
void ZPutBin(struct zmodem_session *, short *, unsigned char); |
| 147 |
void ZSbHdr(struct zmodem_session *, unsigned char); |
| 148 |
void ZStoHdr(struct zmodem_session *, unsigned long); |
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long ZRclHdr(struct zmodem_session *); |
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void ZSendRInit(struct zmodem_session *); |
| 151 |
void ZSendRQInit(struct zmodem_session *); |
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void ZSendRPOS(struct zmodem_session *); |
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void ZSendACK(struct zmodem_session *); |
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void ZSendNAK(struct zmodem_session *); |
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void ZSendEOF(struct zmodem_session *); |
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void ZSendFIN(struct zmodem_session *); |
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void ZSendSkip(struct zmodem_session *); |
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void ZSendCancel(struct zmodem_session *); |
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void ZSendInitHdr(struct zmodem_session *); |
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void ZSendInitDat(struct zmodem_session *); |
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void ZSendFileHdr(struct zmodem_session *); |
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void ZSendFileDat(struct zmodem_session *); |
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void ZSendDataHdr(struct zmodem_session *); |
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void ZSendDataDat(struct zmodem_session *); |
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bool ZCheckHdr(struct zmodem_session *); |
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void ZParseRInit(struct zmodem_session *); |
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bool ZParseSInit(struct zmodem_session *); |
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void ZParseHdr(struct zmodem_session *); |
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bool ZCreateTemporaryFile(struct zmodem_session *); |
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bool ZParseFile(struct zmodem_session *); |
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bool ZWriteData(struct zmodem_session *); |
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void ZCheckData(struct zmodem_session *); |
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|
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#ifdef ZMODEM_DEBUG |
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|
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static const char * |
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hdrtype_name(short type) |
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{ |
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static const char *s[] = { |
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"ZRQINIT", |
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"ZRINIT", |
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"ZSINIT", |
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"ZACK", |
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"ZFILE", |
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"ZSKIP", |
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"ZNAK", |
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"ZABORT", |
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"ZFIN", |
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"ZRPOS", |
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"ZDATA", |
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"ZEOF", |
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"ZFERR", |
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"ZCRC", |
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"ZCHALLENGE", |
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"ZCOMPL", |
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"ZCAN", |
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"ZFREECNT", |
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"ZCOMMAND", |
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"ZSTDERR", |
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}; |
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|
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if (type >= ZRQINIT && type <= ZSTDERR) |
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return (s[type]); |
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|
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return ""; |
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} |
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|
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static const char * |
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state_name(struct zmodem_session *zs) |
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{ |
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static const char *s[] = { |
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"", |
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"Z_RecvInit", |
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"Z_RecvInit2", |
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"Z_RecvData", |
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"Z_RecvFIN", |
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"Z_SendInit", |
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"Z_SendInitHdr", |
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"Z_SendInitDat", |
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"Z_SendFileHdr", |
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"Z_SendFileDat", |
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"Z_SendDataHdr", |
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"Z_SendDataDat", |
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"Z_SendDataDat2", |
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"Z_SendEOF", |
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"Z_SendFIN", |
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"Z_SendSkip", |
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"Z_Cancel", |
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"Z_End", |
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}; |
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|
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if (zs->ZState >= Z_RecvInit && zs->ZState <= Z_End) |
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return (s[zs->ZState]); |
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|
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return ""; |
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} |
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|
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#endif /* ZMODEM_DEBUG */ |
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|
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struct zmodem_session * |
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ZCreateSender(struct session *session, FILE *fp, char *file_name) |
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{ |
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struct zmodem_session *zs; |
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|
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if (!fp) |
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return NULL; |
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|
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zs = xmalloczero(sizeof(struct zmodem_session)); |
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if (zs == NULL) |
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return NULL; |
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zs->session = session; |
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zs->file = fp; |
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strlcpy(zs->file_name, file_name, sizeof(zs->file_name)); |
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|
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fseek(zs->file, 0, SEEK_END); |
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zs->file_size = ftell(zs->file); |
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fseek(zs->file, 0, SEEK_SET); |
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|
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zs->BinFlag = true; |
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zs->ZMode = IdZAutoS; |
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|
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return zs; |
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} |
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|
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struct zmodem_session * |
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ZCreateReceiver(struct session *session, char *path) |
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{ |
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struct zmodem_session *zs; |
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|
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zs = xmalloczero(sizeof(struct zmodem_session)); |
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if (zs == NULL) |
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return NULL; |
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zs->session = session; |
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zs->ZMode = IdZAutoR; |
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zs->upload_file_path = xstrdup(path); |
| 276 |
if (zs->upload_file_path == NULL) { |
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xfree(&zs); |
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return NULL; |
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} |
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|
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return zs; |
| 282 |
} |
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|
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short |
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ZRead1Byte(struct zmodem_session *zs, unsigned char *b) |
| 286 |
{ |
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if (zs->DoIACEscape && zs->LastIAC != 0 && zs->LastIAC != IAC) { |
| 288 |
*b = zs->LastIAC; |
| 289 |
zs->LastIAC = 0; |
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return 1; |
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} |
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|
| 293 |
if (session_get_char(zs->session, b) == 0) |
| 294 |
return 0; |
| 295 |
|
| 296 |
if (zs->DoIACEscape && zs->LastIAC) { |
| 297 |
if (*b == IAC) { |
| 298 |
zs->LastIAC = 0; |
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return 1; |
| 300 |
} |
| 301 |
|
| 302 |
/* |
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* The IAC was not escaping an IAC, so return IAC this time and |
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* save the byte we just read for the next iteration. |
| 305 |
*/ |
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zs->LastIAC = *b; |
| 307 |
*b = IAC; |
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return 1; |
| 309 |
} |
| 310 |
|
| 311 |
if (zs->DoIACEscape && *b == IAC) { |
| 312 |
zs->LastIAC = IAC; |
| 313 |
return 0; |
| 314 |
} |
| 315 |
|
| 316 |
/* ignore 0x11, 0x13, 0x81 and 0x83 */ |
| 317 |
if (((*b & 0x7F) == 0x11) || ((*b & 0x7F) == 0x13)) |
| 318 |
return 0; |
| 319 |
|
| 320 |
return 1; |
| 321 |
} |
| 322 |
|
| 323 |
void |
| 324 |
ZPutHex(struct zmodem_session *zs, short *i, unsigned char b) |
| 325 |
{ |
| 326 |
if (b <= 0x9f) |
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zs->PktOut[*i] = (b >> 4) + 0x30; |
| 328 |
else |
| 329 |
zs->PktOut[*i] = (b >> 4) + 0x57; |
| 330 |
|
| 331 |
(*i)++; |
| 332 |
|
| 333 |
if ((b & 0x0F) <= 0x09) |
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zs->PktOut[*i] = (b & 0x0F) + 0x30; |
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else |
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zs->PktOut[*i] = (b & 0x0F) + 0x57; |
| 337 |
|
| 338 |
(*i)++; |
| 339 |
} |
| 340 |
|
| 341 |
void |
| 342 |
ZResetTimeout(struct zmodem_session *zs, short seconds) |
| 343 |
{ |
| 344 |
zs->TimeOutAt = Time + seconds; |
| 345 |
} |
| 346 |
|
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bool |
| 348 |
ZHaveTimedOut(struct zmodem_session *zs) |
| 349 |
{ |
| 350 |
if (zs->TimeOutAt && Time >= zs->TimeOutAt) |
| 351 |
return true; |
| 352 |
|
| 353 |
return false; |
| 354 |
} |
| 355 |
|
| 356 |
void |
| 357 |
ZShHdr(struct zmodem_session *zs, unsigned char HdrType) |
| 358 |
{ |
| 359 |
short i; |
| 360 |
|
| 361 |
zs->PktOut[0] = ZPAD; |
| 362 |
zs->PktOut[1] = ZPAD; |
| 363 |
zs->PktOut[2] = ZDLE; |
| 364 |
zs->PktOut[3] = ZHEX; |
| 365 |
zs->PktOutCount = 4; |
| 366 |
ZPutHex(zs, &(zs->PktOutCount), HdrType); |
| 367 |
zs->CRC = UpdateCRC(HdrType, 0); |
| 368 |
for (i = 0; i <= 3; i++) { |
| 369 |
ZPutHex(zs, &(zs->PktOutCount), zs->TxHdr[i]); |
| 370 |
zs->CRC = UpdateCRC(zs->TxHdr[i], zs->CRC); |
| 371 |
} |
| 372 |
ZPutHex(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
| 373 |
ZPutHex(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
| 374 |
zs->PktOut[zs->PktOutCount] = 0x8D; |
| 375 |
zs->PktOutCount++; |
| 376 |
zs->PktOut[zs->PktOutCount] = 0x8A; |
| 377 |
zs->PktOutCount++; |
| 378 |
|
| 379 |
if ((HdrType != ZFIN) && (HdrType != ZACK)) { |
| 380 |
zs->PktOut[zs->PktOutCount] = XON; |
| 381 |
zs->PktOutCount++; |
| 382 |
} |
| 383 |
|
| 384 |
zs->PktOutPtr = 0; |
| 385 |
zs->Sending = true; |
| 386 |
|
| 387 |
#ifdef ZMODEM_DEBUG |
| 388 |
logger_printf("[%s] ZShHdr: %s", state_name(zs), |
| 389 |
hdrtype_name(HdrType)); |
| 390 |
#endif |
| 391 |
} |
| 392 |
|
| 393 |
/* |
| 394 |
* In lrzsz, ZDLE (CAN), DLE, XON, XOFF, CR immediately after @, and these |
| 395 |
* Characters with MSB are escaped. |
| 396 |
* It seems that it was the same as lrzsz in Tera Term before, but for some |
| 397 |
* reason CR is always changed to escape target. |
| 398 |
* |
| 399 |
* To avoid problems if you connect to ssh / telnet from the destination |
| 400 |
* LF and GS are also added to the default escape target. |
| 401 |
* ssh: ~ immediately after LF or CR is treated as an escape character |
| 402 |
* telnet: GS is the escape character |
| 403 |
*/ |
| 404 |
void |
| 405 |
ZPutBin(struct zmodem_session *zs, short *i, unsigned char b) |
| 406 |
{ |
| 407 |
switch (b) { |
| 408 |
case 0x0D: // CR |
| 409 |
case 0x8D: // CR | 0x80 |
| 410 |
if (zs->CtlEsc || ((zs->LastSent & 0x7f) == '@')) { |
| 411 |
zs->PktOut[*i] = ZDLE; |
| 412 |
(*i)++; |
| 413 |
b = b ^ 0x40; |
| 414 |
} |
| 415 |
break; |
| 416 |
case 0x0A: // LF |
| 417 |
case 0x10: // DLE |
| 418 |
case 0x11: // XON |
| 419 |
case 0x13: // XOFF |
| 420 |
case 0x1d: // GS |
| 421 |
case ZDLE: // CAN(0x18) |
| 422 |
case 0x8A: // LF | 0x80 |
| 423 |
case 0x90: // DLE | 0x80 |
| 424 |
case 0x91: // XON | 0x80 |
| 425 |
case 0x93: // XOFF | 0x80 |
| 426 |
case 0x9d: // GS | 0x80 |
| 427 |
zs->PktOut[*i] = ZDLE; |
| 428 |
(*i)++; |
| 429 |
b = b ^ 0x40; |
| 430 |
break; |
| 431 |
case 0xff: |
| 432 |
if (zs->DoIACEscape) { |
| 433 |
zs->PktOut[*i] = 0xff; |
| 434 |
(*i)++; |
| 435 |
} |
| 436 |
/* FALLTHROUGH */ |
| 437 |
default: |
| 438 |
if (zs->CtlEsc && ((b & 0x60) == 0)) { |
| 439 |
zs->PktOut[*i] = ZDLE; |
| 440 |
(*i)++; |
| 441 |
b = b ^ 0x40; |
| 442 |
} |
| 443 |
} |
| 444 |
zs->LastSent = b; |
| 445 |
zs->PktOut[*i] = b; |
| 446 |
(*i)++; |
| 447 |
} |
| 448 |
|
| 449 |
void |
| 450 |
ZSbHdr(struct zmodem_session *zs, unsigned char HdrType) |
| 451 |
{ |
| 452 |
short i; |
| 453 |
|
| 454 |
zs->PktOut[0] = ZPAD; |
| 455 |
zs->PktOut[1] = ZDLE; |
| 456 |
zs->PktOut[2] = ZBIN; |
| 457 |
zs->PktOutCount = 3; |
| 458 |
ZPutBin(zs, &(zs->PktOutCount), HdrType); |
| 459 |
zs->CRC = UpdateCRC(HdrType, 0); |
| 460 |
for (i = 0; i <= 3; i++) { |
| 461 |
ZPutBin(zs, &(zs->PktOutCount), zs->TxHdr[i]); |
| 462 |
zs->CRC = UpdateCRC(zs->TxHdr[i], zs->CRC); |
| 463 |
} |
| 464 |
ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
| 465 |
ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
| 466 |
|
| 467 |
zs->PktOutPtr = 0; |
| 468 |
zs->Sending = true; |
| 469 |
|
| 470 |
#ifdef ZMODEM_DEBUG |
| 471 |
logger_printf("[%s] ZSbHdr: %s", state_name(zs), |
| 472 |
hdrtype_name(HdrType)); |
| 473 |
#endif |
| 474 |
} |
| 475 |
|
| 476 |
void |
| 477 |
ZStoHdr(struct zmodem_session *zs, unsigned long Pos) |
| 478 |
{ |
| 479 |
zs->TxHdr[ZP0] = LOBYTE(LOWORD(Pos)); |
| 480 |
zs->TxHdr[ZP1] = HIBYTE(LOWORD(Pos)); |
| 481 |
zs->TxHdr[ZP2] = LOBYTE(HIWORD(Pos)); |
| 482 |
zs->TxHdr[ZP3] = HIBYTE(HIWORD(Pos)); |
| 483 |
} |
| 484 |
|
| 485 |
long |
| 486 |
ZRclHdr(struct zmodem_session *zs) |
| 487 |
{ |
| 488 |
unsigned long l; |
| 489 |
|
| 490 |
l = (unsigned char)(zs->RxHdr[ZP3]); |
| 491 |
l = (l << 8) + (unsigned char)(zs->RxHdr[ZP2]); |
| 492 |
l = (l << 8) + (unsigned char)(zs->RxHdr[ZP1]); |
| 493 |
return ((l << 8) + (unsigned char)(zs->RxHdr[ZP0])); |
| 494 |
} |
| 495 |
|
| 496 |
void |
| 497 |
ZSendRInit(struct zmodem_session *zs) |
| 498 |
{ |
| 499 |
zs->Pos = 0; |
| 500 |
/* we only want this much data thrown at us before we ack it */ |
| 501 |
ZStoHdr(zs, ZMODEM_BLOCK_SIZE * 2); |
| 502 |
zs->TxHdr[ZF0] = CANFC32 | CANFDX; |
| 503 |
if (zs->CtlEsc) |
| 504 |
zs->TxHdr[ZF0] = zs->TxHdr[ZF0] | ESCCTL; |
| 505 |
ZShHdr(zs, ZRINIT); |
| 506 |
} |
| 507 |
|
| 508 |
void |
| 509 |
ZSendRQInit(struct zmodem_session *zs) |
| 510 |
{ |
| 511 |
ZStoHdr(zs, 0); |
| 512 |
ZShHdr(zs, ZRQINIT); |
| 513 |
} |
| 514 |
|
| 515 |
void |
| 516 |
ZSendRPOS(struct zmodem_session *zs) |
| 517 |
{ |
| 518 |
ZStoHdr(zs, zs->Pos); |
| 519 |
ZShHdr(zs, ZRPOS); |
| 520 |
ZResetTimeout(zs, zs->TimeOut); |
| 521 |
} |
| 522 |
|
| 523 |
void |
| 524 |
ZSendACK(struct zmodem_session *zs) |
| 525 |
{ |
| 526 |
ZStoHdr(zs, 0); |
| 527 |
ZShHdr(zs, ZACK); |
| 528 |
ZResetTimeout(zs, zs->TimeOut); |
| 529 |
} |
| 530 |
|
| 531 |
void |
| 532 |
ZSendNAK(struct zmodem_session *zs) |
| 533 |
{ |
| 534 |
ZStoHdr(zs, 0); |
| 535 |
ZShHdr(zs, ZNAK); |
| 536 |
} |
| 537 |
|
| 538 |
void |
| 539 |
ZSendEOF(struct zmodem_session *zs) |
| 540 |
{ |
| 541 |
ZStoHdr(zs, zs->Pos); |
| 542 |
ZShHdr(zs, ZEOF); |
| 543 |
zs->ZState = Z_SendEOF; |
| 544 |
} |
| 545 |
|
| 546 |
void |
| 547 |
ZSendFIN(struct zmodem_session *zs) |
| 548 |
{ |
| 549 |
ZStoHdr(zs, 0); |
| 550 |
ZShHdr(zs, ZFIN); |
| 551 |
} |
| 552 |
|
| 553 |
void |
| 554 |
ZSendSkip(struct zmodem_session *zs) |
| 555 |
{ |
| 556 |
ZStoHdr(zs, 0); |
| 557 |
ZShHdr(zs, ZSKIP); |
| 558 |
} |
| 559 |
|
| 560 |
void |
| 561 |
ZSendCancel(struct zmodem_session *zs) |
| 562 |
{ |
| 563 |
short i; |
| 564 |
|
| 565 |
for (i = 0; i <= 7; i++) |
| 566 |
zs->PktOut[i] = ZDLE; |
| 567 |
for (i = 8; i <= 17; i++) |
| 568 |
zs->PktOut[i] = 0x08; |
| 569 |
zs->PktOutCount = 18; |
| 570 |
zs->PktOutPtr = 0; |
| 571 |
zs->Sending = true; |
| 572 |
zs->ZState = Z_Cancel; |
| 573 |
|
| 574 |
#ifdef ZMODEM_DEBUG |
| 575 |
logger_printf("[%s] ZSendCancel", state_name(zs)); |
| 576 |
#endif |
| 577 |
} |
| 578 |
|
| 579 |
void |
| 580 |
ZSendInitHdr(struct zmodem_session *zs) |
| 581 |
{ |
| 582 |
zs->ZState = Z_SendInitHdr; |
| 583 |
ZStoHdr(zs, 0); |
| 584 |
if (zs->CtlEsc) |
| 585 |
zs->TxHdr[ZF0] = ESCCTL; |
| 586 |
ZShHdr(zs, ZSINIT); |
| 587 |
} |
| 588 |
|
| 589 |
void |
| 590 |
ZSendInitDat(struct zmodem_session *zs) |
| 591 |
{ |
| 592 |
zs->CRC = 0; |
| 593 |
zs->PktOutCount = 0; |
| 594 |
ZPutBin(zs, &(zs->PktOutCount), 0); |
| 595 |
zs->CRC = UpdateCRC(0, zs->CRC); |
| 596 |
|
| 597 |
zs->PktOut[zs->PktOutCount] = ZDLE; |
| 598 |
zs->PktOutCount++; |
| 599 |
zs->PktOut[zs->PktOutCount] = ZCRCW; |
| 600 |
zs->PktOutCount++; |
| 601 |
zs->CRC = UpdateCRC(ZCRCW, zs->CRC); |
| 602 |
|
| 603 |
ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
| 604 |
ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
| 605 |
|
| 606 |
zs->PktOutPtr = 0; |
| 607 |
zs->Sending = true; |
| 608 |
zs->ZState = Z_SendInitDat; |
| 609 |
|
| 610 |
#ifdef ZMODEM_DEBUG |
| 611 |
logger_printf("[%s] ZSendInitDat", state_name(zs)); |
| 612 |
#endif |
| 613 |
} |
| 614 |
|
| 615 |
void |
| 616 |
ZSendFileHdr(struct zmodem_session *zs) |
| 617 |
{ |
| 618 |
zs->ZState = Z_SendFileHdr; |
| 619 |
ZStoHdr(zs, 0); |
| 620 |
if (zs->BinFlag) |
| 621 |
zs->TxHdr[ZF0] = ZCBIN; /* binary file */ |
| 622 |
else |
| 623 |
zs->TxHdr[ZF0] = ZCNL; /* text file, convert newline */ |
| 624 |
ZSbHdr(zs, ZFILE); |
| 625 |
|
| 626 |
#ifdef ZMODEM_DEBUG |
| 627 |
logger_printf("[%s] ZSendFileHdr: %s", state_name(zs), |
| 628 |
zs->BinFlag ? "binary" : "text"); |
| 629 |
#endif |
| 630 |
} |
| 631 |
|
| 632 |
void |
| 633 |
ZSendFileDat(struct zmodem_session *zs) |
| 634 |
{ |
| 635 |
short i, j; |
| 636 |
|
| 637 |
if (!zs->file) { |
| 638 |
#ifdef ZMODEM_DEBUG |
| 639 |
logger_printf("[%s] ZSendFileDat: no file, canceling", |
| 640 |
state_name(zs)); |
| 641 |
#endif |
| 642 |
ZSendCancel(zs); |
| 643 |
return; |
| 644 |
} |
| 645 |
|
| 646 |
/* file name */ |
| 647 |
strlcpy((char *)zs->PktOut, zs->file_name, sizeof(zs->PktOut)); |
| 648 |
zs->PktOutCount = strlen((char *)zs->PktOut); |
| 649 |
zs->CRC = 0; |
| 650 |
for (i = 0; i < zs->PktOutCount; i++) |
| 651 |
zs->CRC = UpdateCRC(zs->PktOut[i], zs->CRC); |
| 652 |
ZPutBin(zs, &(zs->PktOutCount), 0); |
| 653 |
zs->CRC = UpdateCRC(0, zs->CRC); |
| 654 |
|
| 655 |
/* |
| 656 |
* ZFILE fields: |
| 657 |
* size (dec) |
| 658 |
* mtime (oct) |
| 659 |
* mode (oct), |
| 660 |
* serial (oct) |
| 661 |
* files remaining (dec) |
| 662 |
* bytes remaining (dec) |
| 663 |
*/ |
| 664 |
snprintf((char *)zs->PktOut + zs->PktOutCount, |
| 665 |
sizeof(zs->PktOut) - zs->PktOutCount, |
| 666 |
"%lu 0 100644 0 0", zs->file_size); |
| 667 |
j = strlen((char *)zs->PktOut + zs->PktOutCount); |
| 668 |
for (i = 0; i <= j; i++) { |
| 669 |
zs->CRC = UpdateCRC(zs->PktOut[zs->PktOutCount], zs->CRC); |
| 670 |
zs->PktOutCount++; |
| 671 |
} |
| 672 |
|
| 673 |
ZPutBin(zs, &(zs->PktOutCount), 0); |
| 674 |
zs->CRC = UpdateCRC(0, zs->CRC); |
| 675 |
zs->PktOut[zs->PktOutCount] = ZDLE; |
| 676 |
zs->PktOutCount++; |
| 677 |
zs->PktOut[zs->PktOutCount] = ZCRCW; |
| 678 |
zs->PktOutCount++; |
| 679 |
zs->CRC = UpdateCRC(ZCRCW, zs->CRC); |
| 680 |
|
| 681 |
ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
| 682 |
ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
| 683 |
|
| 684 |
zs->PktOutPtr = 0; |
| 685 |
zs->Sending = true; |
| 686 |
zs->ZState = Z_SendFileDat; |
| 687 |
|
| 688 |
fseek(zs->file, 0, SEEK_SET); |
| 689 |
|
| 690 |
#ifdef ZMODEM_DEBUG |
| 691 |
logger_printf("[%s] ZSendFileDat: ZFILE: ZF0=%x ZF1=%x " |
| 692 |
"ZF2=%x file=%s size=%lu", state_name(zs), zs->TxHdr[ZF0], |
| 693 |
zs->TxHdr[ZF1],zs->TxHdr[ZF2], zs->file_name, zs->file_size); |
| 694 |
#endif |
| 695 |
} |
| 696 |
|
| 697 |
void |
| 698 |
ZSendDataHdr(struct zmodem_session *zs) |
| 699 |
{ |
| 700 |
zs->ZState = Z_SendDataHdr; |
| 701 |
ZStoHdr(zs, zs->Pos); |
| 702 |
ZSbHdr(zs, ZDATA); |
| 703 |
} |
| 704 |
|
| 705 |
void |
| 706 |
ZSendDataDat(struct zmodem_session *zs) |
| 707 |
{ |
| 708 |
short c; |
| 709 |
unsigned char b; |
| 710 |
|
| 711 |
if (zs->Pos >= zs->file_size) { |
| 712 |
#ifdef ZMODEM_DEBUG |
| 713 |
logger_printf("[%s] ZSendDataDat: pos %lu >= file size %lu, EOFing", |
| 714 |
state_name(zs), zs->Pos, zs->file_size); |
| 715 |
#endif |
| 716 |
zs->Pos = zs->file_size; |
| 717 |
ZSendEOF(zs); |
| 718 |
fclose(zs->file); |
| 719 |
zs->file = NULL; |
| 720 |
return; |
| 721 |
} |
| 722 |
|
| 723 |
if (zs->Pos != ftell(zs->file)) |
| 724 |
fseek(zs->file, zs->Pos, SEEK_SET); |
| 725 |
|
| 726 |
zs->CRC = 0; |
| 727 |
zs->PktOutCount = 0; |
| 728 |
do { |
| 729 |
c = fread(&b, 1, 1, zs->file); |
| 730 |
if (c > 0) { |
| 731 |
ZPutBin(zs, &(zs->PktOutCount), b); |
| 732 |
zs->CRC = UpdateCRC(b, zs->CRC); |
| 733 |
} |
| 734 |
} while ((c != 0) && (zs->PktOutCount <= zs->MaxDataLen - 2)); |
| 735 |
|
| 736 |
zs->Pos = ftell(zs->file); |
| 737 |
|
| 738 |
zs->PktOut[zs->PktOutCount] = ZDLE; |
| 739 |
zs->PktOutCount++; |
| 740 |
if (zs->Pos >= zs->file_size) |
| 741 |
b = ZCRCE; |
| 742 |
else if ((zs->WinSize >= 0) && (zs->Pos - zs->LastPos > zs->WinSize)) |
| 743 |
b = ZCRCQ; |
| 744 |
else |
| 745 |
b = ZCRCG; |
| 746 |
zs->PktOut[zs->PktOutCount] = b; |
| 747 |
zs->PktOutCount++; |
| 748 |
zs->CRC = UpdateCRC(b, zs->CRC); |
| 749 |
|
| 750 |
ZPutBin(zs, &(zs->PktOutCount), HIBYTE(zs->CRC)); |
| 751 |
ZPutBin(zs, &(zs->PktOutCount), LOBYTE(zs->CRC)); |
| 752 |
|
| 753 |
zs->PktOutPtr = 0; |
| 754 |
zs->Sending = true; |
| 755 |
if (b == ZCRCQ) |
| 756 |
zs->ZState = Z_SendDataDat2; /* wait for response from receiver */ |
| 757 |
else |
| 758 |
zs->ZState = Z_SendDataDat; |
| 759 |
|
| 760 |
ZResetTimeout(zs, zs->TimeOut); |
| 761 |
|
| 762 |
#ifdef ZMODEM_DEBUG |
| 763 |
logger_printf("[%s] ZSendDataDat: pos=%ld", state_name(zs), zs->Pos); |
| 764 |
#endif |
| 765 |
} |
| 766 |
|
| 767 |
bool |
| 768 |
ZInit(struct zmodem_session *zs) |
| 769 |
{ |
| 770 |
zs->CtlEsc = false; |
| 771 |
zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
| 772 |
zs->WinSize = 32767; |
| 773 |
|
| 774 |
if (zs->ZMode == IdZAutoR) |
| 775 |
zs->ZMode = IdZReceive; |
| 776 |
else if (zs->ZMode == IdZAutoS) |
| 777 |
zs->ZMode = IdZSend; |
| 778 |
|
| 779 |
zs->PktOutCount = 0; |
| 780 |
zs->Pos = 0; |
| 781 |
zs->LastPos = 0; |
| 782 |
zs->ZPktState = Z_PktGetPAD; |
| 783 |
zs->Sending = false; |
| 784 |
zs->LastSent = 0; |
| 785 |
zs->CanCount = 5; |
| 786 |
|
| 787 |
if (zs->MaxDataLen <= 0) |
| 788 |
zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
| 789 |
if (zs->MaxDataLen < 64) |
| 790 |
zs->MaxDataLen = 64; |
| 791 |
if (zs->MaxDataLen > ZMODEM_BLOCK_SIZE) |
| 792 |
zs->MaxDataLen = ZMODEM_BLOCK_SIZE; |
| 793 |
|
| 794 |
zs->TimeOut = ZMODEM_TIMEOUT; |
| 795 |
ZResetTimeout(zs, zs->TimeOut); |
| 796 |
|
| 797 |
#ifdef ZMODEM_DEBUG |
| 798 |
logger_printf("[%s] ZInit: %s", state_name(zs), |
| 799 |
zs->ZMode == IdZReceive ? "receive" : "send"); |
| 800 |
#endif |
| 801 |
|
| 802 |
switch (zs->ZMode) { |
| 803 |
case IdZReceive: |
| 804 |
zs->ZState = Z_RecvInit; |
| 805 |
/* give the user extra time to pick a file */ |
| 806 |
ZResetTimeout(zs, zs->TimeOut * 3); |
| 807 |
ZSendRInit(zs); |
| 808 |
break; |
| 809 |
case IdZSend: |
| 810 |
zs->ZState = Z_SendInit; |
| 811 |
ZSendRQInit(zs); |
| 812 |
break; |
| 813 |
} |
| 814 |
|
| 815 |
return true; |
| 816 |
} |
| 817 |
|
| 818 |
void |
| 819 |
ZTimeOutProc(struct zmodem_session *zs) |
| 820 |
{ |
| 821 |
#ifdef ZMODEM_DEBUG |
| 822 |
logger_printf("[%s] ZTimeOutProc", state_name(zs)); |
| 823 |
#endif |
| 824 |
|
| 825 |
switch (zs->ZState) { |
| 826 |
case Z_RecvInit: |
| 827 |
ZSendRInit(zs); |
| 828 |
break; |
| 829 |
case Z_RecvInit2: |
| 830 |
ZSendACK(zs); /* Ack for ZSINIT */ |
| 831 |
break; |
| 832 |
case Z_RecvData: |
| 833 |
ZSendRPOS(zs); |
| 834 |
break; |
| 835 |
case Z_RecvFIN: |
| 836 |
zs->ZState = Z_End; |
| 837 |
break; |
| 838 |
} |
| 839 |
} |
| 840 |
|
| 841 |
bool |
| 842 |
ZCheckHdr(struct zmodem_session *zs) |
| 843 |
{ |
| 844 |
short i; |
| 845 |
bool ok; |
| 846 |
|
| 847 |
if (zs->CRC32) { |
| 848 |
zs->CRC3 = 0xFFFFFFFF; |
| 849 |
for (i = 0; i <= 8; i++) |
| 850 |
zs->CRC3 = UpdateCRC32(zs->PktIn[i], zs->CRC3); |
| 851 |
ok = (zs->CRC3 == 0xDEBB20E3); |
| 852 |
} else { |
| 853 |
zs->CRC = 0; |
| 854 |
for (i = 0; i <= 6; i++) |
| 855 |
zs->CRC = UpdateCRC(zs->PktIn[i], zs->CRC); |
| 856 |
ok = (zs->CRC == 0); |
| 857 |
} |
| 858 |
|
| 859 |
if (ok) { |
| 860 |
#ifdef ZMODEM_DEBUG |
| 861 |
logger_printf("[%s] ZCheckHdr: CRC%s ok", state_name(zs), |
| 862 |
zs->CRC32 ? "32" : "16"); |
| 863 |
#endif |
| 864 |
} else { |
| 865 |
#ifdef ZMODEM_DEBUG |
| 866 |
if (zs->CRC32) |
| 867 |
logger_printf("[%s] ZCheckHdr: CRC32 check failed " |
| 868 |
"(0x%lx != 0xDEBB20E3)", state_name(zs), zs->CRC3); |
| 869 |
else |
| 870 |
logger_printf("[%s] ZCheckHdr: CRC16 check failed " |
| 871 |
"(0x%x != 0x0)", state_name(zs), zs->CRC); |
| 872 |
#endif |
| 873 |
switch (zs->ZState) { |
| 874 |
case Z_RecvInit: |
| 875 |
ZSendRInit(zs); |
| 876 |
break; |
| 877 |
case Z_RecvData: |
| 878 |
ZSendRPOS(zs); |
| 879 |
break; |
| 880 |
} |
| 881 |
} |
| 882 |
zs->RxType = zs->PktIn[0]; |
| 883 |
for (i = 1; i <= 4; i++) |
| 884 |
zs->RxHdr[i - 1] = zs->PktIn[i]; |
| 885 |
|
| 886 |
return ok; |
| 887 |
} |
| 888 |
|
| 889 |
void |
| 890 |
ZParseRInit(struct zmodem_session *zs) |
| 891 |
{ |
| 892 |
short max; |
| 893 |
|
| 894 |
if ((zs->ZState != Z_SendInit) && (zs->ZState != Z_SendEOF)) { |
| 895 |
#ifdef ZMODEM_DEBUG |
| 896 |
logger_printf("[%s] ZParseRInit: not in Init or EOF", |
| 897 |
state_name(zs)); |
| 898 |
#endif |
| 899 |
return; |
| 900 |
} |
| 901 |
|
| 902 |
if (!zs->file) { |
| 903 |
#ifdef ZMODEM_DEBUG |
| 904 |
logger_printf("[%s] ZParseRInit: no file, FINing", |
| 905 |
state_name(zs)); |
| 906 |
#endif |
| 907 |
zs->ZState = Z_SendFIN; |
| 908 |
ZSendFIN(zs); |
| 909 |
return; |
| 910 |
} |
| 911 |
|
| 912 |
if (zs->CtlEsc) { |
| 913 |
if ((zs->RxHdr[ZF0] & ESCCTL) == 0) { |
| 914 |
zs->ZState = Z_SendInitHdr; |
| 915 |
ZSendInitHdr(zs); |
| 916 |
return; |
| 917 |
} |
| 918 |
} else |
| 919 |
zs->CtlEsc = (zs->RxHdr[ZF0] & ESCCTL) != 0; |
| 920 |
|
| 921 |
max = (zs->RxHdr[ZP1] << 8) + zs->RxHdr[ZP0]; |
| 922 |
if (max <= 0) |
| 923 |
max = ZMODEM_BLOCK_SIZE; |
| 924 |
if (zs->MaxDataLen > max) |
| 925 |
zs->MaxDataLen = max; |
| 926 |
|
| 927 |
#ifdef ZMODEM_DEBUG |
| 928 |
logger_printf("[%s] ZParseRInit: max data len %d", state_name(zs), |
| 929 |
zs->MaxDataLen); |
| 930 |
#endif |
| 931 |
|
| 932 |
zs->ZState = Z_SendFileHdr; |
| 933 |
ZSendFileHdr(zs); |
| 934 |
} |
| 935 |
|
| 936 |
bool |
| 937 |
ZParseSInit(struct zmodem_session *zs) |
| 938 |
{ |
| 939 |
if (zs->ZState != Z_RecvInit) { |
| 940 |
#ifdef ZMODEM_DEBUG |
| 941 |
logger_printf("[%s] ZParseSInit: state not RecvInit", |
| 942 |
state_name(zs)); |
| 943 |
#endif |
| 944 |
return false; |
| 945 |
} |
| 946 |
|
| 947 |
zs->ZState = Z_RecvInit2; |
| 948 |
zs->CtlEsc = zs->CtlEsc || ((zs->RxHdr[ZF0] & ESCCTL) != 0); |
| 949 |
|
| 950 |
return true; |
| 951 |
} |
| 952 |
|
| 953 |
void |
| 954 |
ZParseHdr(struct zmodem_session *zs) |
| 955 |
{ |
| 956 |
#ifdef ZMODEM_DEBUG |
| 957 |
logger_printf("[%s] ZParseHdr: RxType %s", state_name(zs), |
| 958 |
hdrtype_name(zs->RxType)); |
| 959 |
#endif |
| 960 |
|
| 961 |
switch (zs->RxType) { |
| 962 |
case ZRQINIT: |
| 963 |
if (zs->ZState == Z_RecvInit) |
| 964 |
ZSendRInit(zs); |
| 965 |
break; |
| 966 |
case ZRINIT: |
| 967 |
ZParseRInit(zs); |
| 968 |
break; |
| 969 |
case ZSINIT: |
| 970 |
zs->ZPktState = Z_PktGetData; |
| 971 |
if (zs->ZState == Z_RecvInit) |
| 972 |
ZResetTimeout(zs, zs->TimeOut); |
| 973 |
break; |
| 974 |
case ZACK: |
| 975 |
switch (zs->ZState) { |
| 976 |
case Z_SendInitDat: |
| 977 |
ZSendFileHdr(zs); |
| 978 |
break; |
| 979 |
case Z_SendDataDat2: |
| 980 |
zs->LastPos = ZRclHdr(zs); |
| 981 |
ZResetTimeout(zs, zs->TimeOut); |
| 982 |
if (zs->Pos == zs->LastPos) |
| 983 |
ZSendDataDat(zs); |
| 984 |
else { |
| 985 |
zs->Pos = zs->LastPos; |
| 986 |
ZSendDataHdr(zs); |
| 987 |
} |
| 988 |
break; |
| 989 |
} |
| 990 |
break; |
| 991 |
case ZFILE: |
| 992 |
zs->ZPktState = Z_PktGetData; |
| 993 |
if ((zs->ZState == Z_RecvInit) || (zs->ZState == Z_RecvInit2)) { |
| 994 |
zs->BinFlag = (zs->RxHdr[ZF0] != ZCNL); |
| 995 |
ZResetTimeout(zs, zs->TimeOut); |
| 996 |
} |
| 997 |
break; |
| 998 |
case ZSKIP: |
| 999 |
if (zs->file) { |
| 1000 |
fclose(zs->file); |
| 1001 |
/* |
| 1002 |
* If you try to send a file that exists on the server |
| 1003 |
* side, ZParseRInit () will double close, so |
| 1004 |
* Drop the flag here. (2007.12.20 yutaka) |
| 1005 |
*/ |
| 1006 |
zs->file = NULL; |
| 1007 |
} |
| 1008 |
ZStoHdr(zs, 0); |
| 1009 |
if (zs->CtlEsc) |
| 1010 |
zs->RxHdr[ZF0] = ESCCTL; |
| 1011 |
zs->ZState = Z_SendInit; |
| 1012 |
ZParseRInit(zs); |
| 1013 |
break; |
| 1014 |
case ZNAK: |
| 1015 |
switch (zs->ZState) { |
| 1016 |
case Z_SendInitHdr: |
| 1017 |
case Z_SendInitDat: |
| 1018 |
ZSendInitHdr(zs); |
| 1019 |
break; |
| 1020 |
case Z_SendFileHdr: |
| 1021 |
case Z_SendFileDat: |
| 1022 |
ZSendFileHdr(zs); |
| 1023 |
break; |
| 1024 |
} |
| 1025 |
break; |
| 1026 |
case ZABORT: |
| 1027 |
case ZFERR: |
| 1028 |
if (zs->ZMode == IdZSend) { |
| 1029 |
zs->ZState = Z_SendFIN; |
| 1030 |
ZSendFIN(zs); |
| 1031 |
} |
| 1032 |
break; |
| 1033 |
case ZFIN: |
| 1034 |
if (zs->ZMode == IdZReceive) { |
| 1035 |
#if 0 |
| 1036 |
zs->ZState = Z_RecvFIN; |
| 1037 |
#else |
| 1038 |
/* we only want to receive one file per session, just end */ |
| 1039 |
zs->ZState = Z_End; |
| 1040 |
#endif |
| 1041 |
ZSendFIN(zs); |
| 1042 |
zs->CanCount = 2; |
| 1043 |
ZResetTimeout(zs, zs->TimeOut); |
| 1044 |
} else { |
| 1045 |
zs->ZState = Z_End; |
| 1046 |
session_output(zs->session, (const char *)"OO", 2); |
| 1047 |
} |
| 1048 |
break; |
| 1049 |
case ZRPOS: |
| 1050 |
switch (zs->ZState) { |
| 1051 |
case Z_SendFileDat: |
| 1052 |
case Z_SendDataHdr: |
| 1053 |
case Z_SendDataDat: |
| 1054 |
case Z_SendDataDat2: |
| 1055 |
case Z_SendEOF: |
| 1056 |
if (!zs->file) { |
| 1057 |
#ifdef ZMODEM_DEBUG |
| 1058 |
logger_printf("[%s] ZParseHdr: ZRPOS with no file, FINing", |
| 1059 |
state_name(zs)); |
| 1060 |
#endif |
| 1061 |
zs->ZState = Z_SendFIN; |
| 1062 |
ZSendFIN(zs); |
| 1063 |
break; |
| 1064 |
} |
| 1065 |
zs->Pos = ZRclHdr(zs); |
| 1066 |
zs->LastPos = zs->Pos; |
| 1067 |
#ifdef ZMODEM_DEBUG |
| 1068 |
logger_printf("[%s] ZParseHdr: pos=%ld", state_name(zs), |
| 1069 |
zs->Pos); |
| 1070 |
#endif |
| 1071 |
ZSendDataHdr(zs); |
| 1072 |
break; |
| 1073 |
} |
| 1074 |
break; |
| 1075 |
case ZDATA: |
| 1076 |
if (zs->Pos != ZRclHdr(zs)) { |
| 1077 |
ZSendRPOS(zs); |
| 1078 |
return; |
| 1079 |
} |
| 1080 |
ZResetTimeout(zs, zs->TimeOut); |
| 1081 |
zs->ZPktState = Z_PktGetData; |
| 1082 |
break; |
| 1083 |
case ZEOF: |
| 1084 |
if (zs->Pos != ZRclHdr(zs)) { |
| 1085 |
#ifdef ZMODEM_DEBUG |
| 1086 |
logger_printf("[%s] ZParseHdr: ZEOF but pos %ld != received %ld", |
| 1087 |
state_name(zs), zs->Pos, ZRclHdr(zs)); |
| 1088 |
#endif |
| 1089 |
ZSendRPOS(zs); |
| 1090 |
return; |
| 1091 |
} |
| 1092 |
|
| 1093 |
if (zs->file) { |
| 1094 |
#ifdef ZMODEM_DEBUG |
| 1095 |
logger_printf("[%s] ZParseHdr: finished with file at %ld, " |
| 1096 |
"closing", state_name(zs), zs->Pos); |
| 1097 |
#endif |
| 1098 |
ZSendRPOS(zs); |
| 1099 |
if (zs->CRRecv) { |
| 1100 |
zs->CRRecv = false; |
| 1101 |
fwrite("\r", 1, 1, zs->file); |
| 1102 |
} |
| 1103 |
fclose(zs->file); |
| 1104 |
zs->file = NULL; |
| 1105 |
} |
| 1106 |
zs->ZState = Z_RecvInit; |
| 1107 |
ZSendRInit(zs); |
| 1108 |
break; |
| 1109 |
} |
| 1110 |
zs->Quoted = false; |
| 1111 |
zs->CRC = 0; |
| 1112 |
zs->CRC3 = 0xFFFFFFFF; |
| 1113 |
zs->PktInPtr = 0; |
| 1114 |
zs->PktInCount = 0; |
| 1115 |
} |
| 1116 |
|
| 1117 |
bool |
| 1118 |
ZCreateTemporaryFile(struct zmodem_session *zs) |
| 1119 |
{ |
| 1120 |
if (zs->upload_file_path[0] == '\0') { |
| 1121 |
#ifdef ZMODEM_DEBUG |
| 1122 |
logger_printf("[%s] ZCreateTemporaryFile: no file path", |
| 1123 |
state_name(zs)); |
| 1124 |
#endif |
| 1125 |
return false; |
| 1126 |
} |
| 1127 |
|
| 1128 |
zs->file = fopen(zs->upload_file_path, "wb+"); |
| 1129 |
if (zs->file == NULL) { |
| 1130 |
#ifdef ZMODEM_DEBUG |
| 1131 |
logger_printf("[%s] ZCreateTemporaryFile: opening %s failed", |
| 1132 |
state_name(zs), zs->upload_file_path); |
| 1133 |
#endif |
| 1134 |
return false; |
| 1135 |
} |
| 1136 |
|
| 1137 |
#ifdef ZMODEM_DEBUG |
| 1138 |
logger_printf("[%s] ZCreateTemporaryFile: %s", state_name(zs), |
| 1139 |
zs->upload_file_path); |
| 1140 |
#endif |
| 1141 |
|
| 1142 |
return true; |
| 1143 |
} |
| 1144 |
|
| 1145 |
bool |
| 1146 |
ZParseFile(struct zmodem_session *zs) |
| 1147 |
{ |
| 1148 |
unsigned char b; |
| 1149 |
short i; |
| 1150 |
char *p, *tfile_name; |
| 1151 |
unsigned long modtime, file_size; |
| 1152 |
short mode; |
| 1153 |
short ret; |
| 1154 |
|
| 1155 |
if ((zs->ZState != Z_RecvInit) && (zs->ZState != Z_RecvInit2)) { |
| 1156 |
#ifdef ZMODEM_DEBUG |
| 1157 |
logger_printf("[%s] ZParseFile: state not RecvInit/2", |
| 1158 |
state_name(zs)); |
| 1159 |
#endif |
| 1160 |
return false; |
| 1161 |
} |
| 1162 |
|
| 1163 |
zs->CRRecv = false; |
| 1164 |
|
| 1165 |
/* file name */ |
| 1166 |
zs->PktIn[zs->PktInPtr] = '\0'; |
| 1167 |
|
| 1168 |
/* don't allow paths in file name */ |
| 1169 |
tfile_name = (char *)&zs->PktIn; |
| 1170 |
i = 0; |
| 1171 |
while (tfile_name[i] != '\0') { |
| 1172 |
if (tfile_name[i] == '/') { |
| 1173 |
tfile_name += i + 1; |
| 1174 |
i = 0; |
| 1175 |
} |
| 1176 |
i++; |
| 1177 |
} |
| 1178 |
|
| 1179 |
#ifdef ZMODEM_DEBUG |
| 1180 |
logger_printf("[%s] ZParseFile: path \"%s\" -> \"%s\"", |
| 1181 |
state_name(zs), (char *)&zs->PktIn, tfile_name); |
| 1182 |
#endif |
| 1183 |
|
| 1184 |
if (tfile_name[0] == '\0') |
| 1185 |
return false; |
| 1186 |
|
| 1187 |
strlcpy(zs->file_name, tfile_name, sizeof(zs->file_name)); |
| 1188 |
|
| 1189 |
if (!ZCreateTemporaryFile(zs)) { |
| 1190 |
zs->file_name[0] = '\0'; |
| 1191 |
return false; |
| 1192 |
} |
| 1193 |
|
| 1194 |
/* file size */ |
| 1195 |
i = strlen((char *)zs->PktIn) + 1; |
| 1196 |
file_size = 0; |
| 1197 |
do { |
| 1198 |
b = zs->PktIn[i]; |
| 1199 |
if ((b >= 0x30) && (b <= 0x39)) |
| 1200 |
file_size = (file_size * 10) + b - 0x30; |
| 1201 |
i++; |
| 1202 |
} while ((b >= 0x30) && (b <= 0x39)); |
| 1203 |
zs->file_size = file_size; |
| 1204 |
|
| 1205 |
/* file mtime */ |
| 1206 |
p = (char *)zs->PktIn + i; |
| 1207 |
zs->file_mtime = 0; |
| 1208 |
if (*p) { |
| 1209 |
ret = sscanf(p, "%lo%o", &modtime, &mode); |
| 1210 |
if (ret >= 1) |
| 1211 |
zs->file_mtime = modtime; |
| 1212 |
} |
| 1213 |
|
| 1214 |
zs->Pos = 0; |
| 1215 |
fseek(zs->file, 0, SEEK_SET); |
| 1216 |
|
| 1217 |
zs->ZState = Z_RecvData; |
| 1218 |
ZStoHdr(zs, 0); |
| 1219 |
|
| 1220 |
/* set timeout for data */ |
| 1221 |
ZResetTimeout(zs, zs->TimeOut); |
| 1222 |
|
| 1223 |
return true; |
| 1224 |
} |
| 1225 |
|
| 1226 |
bool |
| 1227 |
ZWriteData(struct zmodem_session *zs) |
| 1228 |
{ |
| 1229 |
short i; |
| 1230 |
unsigned char b; |
| 1231 |
|
| 1232 |
if (zs->ZState != Z_RecvData) { |
| 1233 |
#ifdef ZMODEM_DEBUG |
| 1234 |
logger_printf("[%s] ZWriteData: state != RecvData", state_name(zs)); |
| 1235 |
#endif |
| 1236 |
return false; |
| 1237 |
} |
| 1238 |
|
| 1239 |
zs->TimeOutAt = 0; |
| 1240 |
|
| 1241 |
if (zs->BinFlag) |
| 1242 |
fwrite(zs->PktIn, zs->PktInPtr, 1, zs->file); |
| 1243 |
else |
| 1244 |
for (i = 0; i <= zs->PktInPtr - 1; i++) { |
| 1245 |
b = zs->PktIn[i]; |
| 1246 |
if ((b == 0x0A) && (!zs->CRRecv)) |
| 1247 |
fwrite("\015", 1, 1, zs->file); |
| 1248 |
if (zs->CRRecv && (b != 0x0A)) |
| 1249 |
fwrite("\012", 1, 1, zs->file); |
| 1250 |
zs->CRRecv = b == 0x0D; |
| 1251 |
fwrite(&b, 1, 1, zs->file); |
| 1252 |
} |
| 1253 |
|
| 1254 |
#ifdef ZMODEM_DEBUG |
| 1255 |
logger_printf("[%s] ZWriteData: wrote %d byte(s) at %ld", |
| 1256 |
state_name(zs), zs->PktInPtr, zs->Pos); |
| 1257 |
#endif |
| 1258 |
|
| 1259 |
zs->Pos += zs->PktInPtr; |
| 1260 |
fseek(zs->file, zs->Pos, SEEK_SET); |
| 1261 |
ZStoHdr(zs, zs->Pos); |
| 1262 |
|
| 1263 |
/* set timeout for data */ |
| 1264 |
ZResetTimeout(zs, zs->TimeOut); |
| 1265 |
|
| 1266 |
return true; |
| 1267 |
} |
| 1268 |
|
| 1269 |
void |
| 1270 |
ZCheckData(struct zmodem_session *zs) |
| 1271 |
{ |
| 1272 |
bool ok; |
| 1273 |
|
| 1274 |
/* check CRC */ |
| 1275 |
if ((zs->CRC32 && zs->CRC3 != 0xDEBB20E3) || |
| 1276 |
(!zs->CRC32 && zs->CRC != 0)) { |
| 1277 |
#ifdef ZMODEM_DEBUG |
| 1278 |
logger_printf("[%s] ZCheckData: CRC%s failed", state_name(zs), |
| 1279 |
zs->CRC32 ? "32" : "16"); |
| 1280 |
#endif |
| 1281 |
switch (zs->ZState) { |
| 1282 |
case Z_RecvInit: |
| 1283 |
case Z_RecvInit2: |
| 1284 |
ZSendNAK(zs); |
| 1285 |
break; |
| 1286 |
case Z_RecvData: |
| 1287 |
ZSendRPOS(zs); |
| 1288 |
break; |
| 1289 |
} |
| 1290 |
zs->ZPktState = Z_PktGetPAD; |
| 1291 |
return; |
| 1292 |
} |
| 1293 |
|
| 1294 |
/* parse data */ |
| 1295 |
switch (zs->RxType) { |
| 1296 |
case ZSINIT: |
| 1297 |
ok = ZParseSInit(zs); |
| 1298 |
break; |
| 1299 |
case ZFILE: |
| 1300 |
ok = ZParseFile(zs); |
| 1301 |
break; |
| 1302 |
case ZDATA: |
| 1303 |
ok = ZWriteData(zs); |
| 1304 |
break; |
| 1305 |
default: |
| 1306 |
ok = false; |
| 1307 |
} |
| 1308 |
|
| 1309 |
if (!ok) { |
| 1310 |
#ifdef ZMODEM_DEBUG |
| 1311 |
logger_printf("[%s] ZCheckData: bad RxType %s, skipping", |
| 1312 |
state_name(zs), hdrtype_name(zs->RxType)); |
| 1313 |
#endif |
| 1314 |
zs->ZPktState = Z_PktGetPAD; |
| 1315 |
zs->ZState = Z_SendSkip; |
| 1316 |
ZSendSkip(zs); |
| 1317 |
return; |
| 1318 |
} |
| 1319 |
|
| 1320 |
if (zs->RxType == ZFILE) |
| 1321 |
ZShHdr(zs, ZRPOS); |
| 1322 |
|
| 1323 |
/* next state */ |
| 1324 |
switch (zs->TERM) { |
| 1325 |
case ZCRCE: |
| 1326 |
zs->ZPktState = Z_PktGetPAD; |
| 1327 |
break; |
| 1328 |
case ZCRCG: |
| 1329 |
zs->ZPktState = Z_PktGetData; |
| 1330 |
break; |
| 1331 |
case ZCRCQ: |
| 1332 |
zs->ZPktState = Z_PktGetData; |
| 1333 |
if (zs->RxType != ZFILE) |
| 1334 |
ZShHdr(zs, ZACK); |
| 1335 |
break; |
| 1336 |
case ZCRCW: |
| 1337 |
zs->ZPktState = Z_PktGetPAD; |
| 1338 |
if (zs->RxType != ZFILE) |
| 1339 |
ZShHdr(zs, ZACK); |
| 1340 |
break; |
| 1341 |
default: |
| 1342 |
zs->ZPktState = Z_PktGetPAD; |
| 1343 |
} |
| 1344 |
|
| 1345 |
#ifdef ZMODEM_DEBUG |
| 1346 |
logger_printf("[%s] ZCheckData: TERM %s", state_name(zs), |
| 1347 |
hdrtype_name(zs->TERM)); |
| 1348 |
#endif |
| 1349 |
|
| 1350 |
if (zs->ZPktState == Z_PktGetData) { |
| 1351 |
zs->Quoted = false; |
| 1352 |
zs->CRC = 0; |
| 1353 |
zs->CRC3 = 0xFFFFFFFF; |
| 1354 |
zs->PktInPtr = 0; |
| 1355 |
zs->PktInCount = 0; |
| 1356 |
} |
| 1357 |
} |
| 1358 |
|
| 1359 |
bool |
| 1360 |
ZParse(struct zmodem_session *zs) |
| 1361 |
{ |
| 1362 |
unsigned char b; |
| 1363 |
short c; |
| 1364 |
|
| 1365 |
do { |
| 1366 |
/* Send packet */ |
| 1367 |
if (zs->Sending) { |
| 1368 |
c = 1; |
| 1369 |
while ((c > 0) && (zs->PktOutCount > 0)) { |
| 1370 |
c = session_output(zs->session, |
| 1371 |
(const char *)&(zs->PktOut[zs->PktOutPtr]), |
| 1372 |
zs->PktOutCount); |
| 1373 |
zs->PktOutPtr = zs->PktOutPtr + c; |
| 1374 |
zs->PktOutCount = zs->PktOutCount - c; |
| 1375 |
} |
| 1376 |
if (zs->PktOutCount <= 0) |
| 1377 |
zs->Sending = false; |
| 1378 |
if ((zs->ZMode == IdZReceive) && (zs->PktOutCount > 0)) |
| 1379 |
return true; |
| 1380 |
} |
| 1381 |
|
| 1382 |
c = ZRead1Byte(zs, &b); |
| 1383 |
while (c > 0) { |
| 1384 |
if (zs->ZState == Z_RecvFIN) { |
| 1385 |
if (b == 'O') |
| 1386 |
zs->CanCount--; |
| 1387 |
if (zs->CanCount <= 0) { |
| 1388 |
zs->ZState = Z_End; |
| 1389 |
return false; |
| 1390 |
} |
| 1391 |
} else { |
| 1392 |
switch (b) { |
| 1393 |
case ZDLE: |
| 1394 |
zs->CanCount--; |
| 1395 |
if (zs->CanCount <= 0) { |
| 1396 |
zs->ZState = Z_End; |
| 1397 |
return false; |
| 1398 |
} |
| 1399 |
break; |
| 1400 |
default: |
| 1401 |
zs->CanCount = 5; |
| 1402 |
} |
| 1403 |
} |
| 1404 |
|
| 1405 |
switch (zs->ZPktState) { |
| 1406 |
case Z_PktGetPAD: |
| 1407 |
switch (b) { |
| 1408 |
case ZPAD: |
| 1409 |
zs->ZPktState = Z_PktGetDLE; |
| 1410 |
break; |
| 1411 |
} |
| 1412 |
break; |
| 1413 |
case Z_PktGetDLE: |
| 1414 |
switch (b) { |
| 1415 |
case ZPAD: |
| 1416 |
break; |
| 1417 |
case ZDLE: |
| 1418 |
zs->ZPktState = Z_PktHdrFrm; |
| 1419 |
break; |
| 1420 |
default: |
| 1421 |
zs->ZPktState = Z_PktGetPAD; |
| 1422 |
} |
| 1423 |
break; |
| 1424 |
case Z_PktHdrFrm: /* Get header format type */ |
| 1425 |
switch (b) { |
| 1426 |
case ZBIN: |
| 1427 |
zs->CRC32 = false; |
| 1428 |
zs->PktInCount = 7; |
| 1429 |
zs->ZPktState = Z_PktGetBin; |
| 1430 |
break; |
| 1431 |
case ZHEX: |
| 1432 |
zs->HexLo = false; |
| 1433 |
zs->CRC32 = false; |
| 1434 |
zs->PktInCount = 7; |
| 1435 |
zs->ZPktState = Z_PktGetHex; |
| 1436 |
break; |
| 1437 |
case ZBIN32: |
| 1438 |
zs->CRC32 = true; |
| 1439 |
zs->PktInCount = 9; |
| 1440 |
zs->ZPktState = Z_PktGetBin; |
| 1441 |
break; |
| 1442 |
default: |
| 1443 |
zs->ZPktState = Z_PktGetPAD; |
| 1444 |
} |
| 1445 |
zs->Quoted = false; |
| 1446 |
zs->PktInPtr = 0; |
| 1447 |
break; |
| 1448 |
case Z_PktGetBin: |
| 1449 |
switch (b) { |
| 1450 |
case ZDLE: |
| 1451 |
zs->Quoted = true; |
| 1452 |
break; |
| 1453 |
default: |
| 1454 |
if (zs->Quoted) { |
| 1455 |
switch (b) { |
| 1456 |
case ZRUB0: |
| 1457 |
b = 0x7f; |
| 1458 |
break; |
| 1459 |
case ZRUB1: |
| 1460 |
b = 0xff; |
| 1461 |
break; |
| 1462 |
default: |
| 1463 |
b = b ^ 0x40; |
| 1464 |
} |
| 1465 |
zs->Quoted = false; |
| 1466 |
} |
| 1467 |
|
| 1468 |
if (zs->PktInPtr >= sizeof(zs->PktIn)) { |
| 1469 |
zs->ZPktState = Z_PktGetPAD; |
| 1470 |
break; |
| 1471 |
} |
| 1472 |
zs->PktIn[zs->PktInPtr] = b; |
| 1473 |
zs->PktInPtr++; |
| 1474 |
zs->PktInCount--; |
| 1475 |
if (zs->PktInCount == 0) { |
| 1476 |
zs->ZPktState = Z_PktGetPAD; |
| 1477 |
if (ZCheckHdr(zs)) |
| 1478 |
ZParseHdr(zs); |
| 1479 |
} |
| 1480 |
} |
| 1481 |
break; |
| 1482 |
case Z_PktGetHex: |
| 1483 |
if (b <= '9') |
| 1484 |
b = b - 0x30; |
| 1485 |
else if ((b >= 'a') && (b <= 'f')) |
| 1486 |
b = b - 0x57; |
| 1487 |
else { |
| 1488 |
zs->ZPktState = Z_PktGetPAD; |
| 1489 |
return true; |
| 1490 |
} |
| 1491 |
|
| 1492 |
if (zs->HexLo) { |
| 1493 |
zs->PktIn[zs->PktInPtr] = |
| 1494 |
zs->PktIn[zs->PktInPtr] + b; |
| 1495 |
zs->HexLo = false; |
| 1496 |
zs->PktInPtr++; |
| 1497 |
zs->PktInCount--; |
| 1498 |
if (zs->PktInCount <= 0) { |
| 1499 |
zs->ZPktState = Z_PktGetHexEOL; |
| 1500 |
zs->PktInCount = 2; |
| 1501 |
} |
| 1502 |
} else { |
| 1503 |
zs->PktIn[zs->PktInPtr] = b << 4; |
| 1504 |
zs->HexLo = true; |
| 1505 |
} |
| 1506 |
break; |
| 1507 |
case Z_PktGetHexEOL: |
| 1508 |
zs->PktInCount--; |
| 1509 |
if (zs->PktInCount <= 0) { |
| 1510 |
zs->ZPktState = Z_PktGetPAD; |
| 1511 |
if (ZCheckHdr(zs)) |
| 1512 |
ZParseHdr(zs); |
| 1513 |
} |
| 1514 |
break; |
| 1515 |
case Z_PktGetData: |
| 1516 |
switch (b) { |
| 1517 |
case ZDLE: |
| 1518 |
zs->Quoted = true; |
| 1519 |
break; |
| 1520 |
default: |
| 1521 |
if (zs->Quoted) { |
| 1522 |
switch (b) { |
| 1523 |
case ZCRCE: |
| 1524 |
case ZCRCG: |
| 1525 |
case ZCRCQ: |
| 1526 |
case ZCRCW: |
| 1527 |
zs->TERM = b; |
| 1528 |
if (zs->CRC32) |
| 1529 |
zs->PktInCount = 4; |
| 1530 |
else |
| 1531 |
zs->PktInCount = 2; |
| 1532 |
zs->ZPktState = Z_PktGetCRC; |
| 1533 |
break; |
| 1534 |
case ZRUB0: |
| 1535 |
b = 0x7F; |
| 1536 |
break; |
| 1537 |
case ZRUB1: |
| 1538 |
b = 0xFF; |
| 1539 |
break; |
| 1540 |
default: |
| 1541 |
b = b ^ 0x40; |
| 1542 |
} |
| 1543 |
zs->Quoted = false; |
| 1544 |
} |
| 1545 |
|
| 1546 |
if (zs->CRC32) |
| 1547 |
zs->CRC3 = UpdateCRC32(b, zs->CRC3); |
| 1548 |
else |
| 1549 |
zs->CRC = UpdateCRC(b, zs->CRC); |
| 1550 |
|
| 1551 |
if (zs->ZPktState == Z_PktGetData) { |
| 1552 |
if (zs->PktInPtr < ZMODEM_BLOCK_SIZE) { |
| 1553 |
zs->PktIn[zs->PktInPtr] = b; |
| 1554 |
zs->PktInPtr++; |
| 1555 |
} else |
| 1556 |
zs->ZPktState = Z_PktGetPAD; |
| 1557 |
} |
| 1558 |
} |
| 1559 |
break; |
| 1560 |
case Z_PktGetCRC: |
| 1561 |
switch (b) { |
| 1562 |
case ZDLE: |
| 1563 |
zs->Quoted = true; |
| 1564 |
break; |
| 1565 |
default: |
| 1566 |
if (zs->Quoted) { |
| 1567 |
switch (b) { |
| 1568 |
case ZRUB0: |
| 1569 |
b = 0x7F; |
| 1570 |
break; |
| 1571 |
case ZRUB1: |
| 1572 |
b = 0xFF; |
| 1573 |
break; |
| 1574 |
default: |
| 1575 |
b = b ^ 0x40; |
| 1576 |
} |
| 1577 |
zs->Quoted = false; |
| 1578 |
} |
| 1579 |
if (zs->CRC32) |
| 1580 |
zs->CRC3 = UpdateCRC32(b, zs->CRC3); |
| 1581 |
else |
| 1582 |
zs->CRC = UpdateCRC(b, zs->CRC); |
| 1583 |
zs->PktInCount--; |
| 1584 |
if (zs->PktInCount <= 0) |
| 1585 |
ZCheckData(zs); |
| 1586 |
} |
| 1587 |
break; |
| 1588 |
} |
| 1589 |
c = ZRead1Byte(zs, &b); |
| 1590 |
} |
| 1591 |
|
| 1592 |
if (!zs->Sending) |
| 1593 |
switch (zs->ZState) { |
| 1594 |
case Z_SendInitHdr: |
| 1595 |
ZSendInitDat(zs); |
| 1596 |
break; |
| 1597 |
case Z_SendFileHdr: |
| 1598 |
ZSendFileDat(zs); |
| 1599 |
break; |
| 1600 |
case Z_SendDataHdr: |
| 1601 |
case Z_SendDataDat: |
| 1602 |
ZSendDataDat(zs); |
| 1603 |
break; |
| 1604 |
case Z_Cancel: |
| 1605 |
zs->ZState = Z_End; |
| 1606 |
break; |
| 1607 |
} |
| 1608 |
|
| 1609 |
if (zs->Sending && (zs->PktOutCount > 0)) |
| 1610 |
return true; |
| 1611 |
} while (zs->Sending); |
| 1612 |
|
| 1613 |
if (zs->ZState == Z_End) |
| 1614 |
return false; |
| 1615 |
|
| 1616 |
return true; |
| 1617 |
} |
| 1618 |
|
| 1619 |
void |
| 1620 |
ZCancel(struct zmodem_session *zs) |
| 1621 |
{ |
| 1622 |
#ifdef ZMODEM_DEBUG |
| 1623 |
logger_printf("[%s] ZCancel", state_name(zs)); |
| 1624 |
#endif |
| 1625 |
|
| 1626 |
ZSendCancel(zs); |
| 1627 |
} |
| 1628 |
|
| 1629 |
void |
| 1630 |
ZDestroy(struct zmodem_session *zs) |
| 1631 |
{ |
| 1632 |
#ifdef ZMODEM_DEBUG |
| 1633 |
logger_printf("[%s] ZDestroy", state_name(zs)); |
| 1634 |
#endif |
| 1635 |
|
| 1636 |
if (zs->file) |
| 1637 |
fclose(zs->file); |
| 1638 |
if (zs->upload_file_path) |
| 1639 |
xfree(&zs->upload_file_path); |
| 1640 |
xfree(&zs); |
| 1641 |
} |