1 /* 2 * Z M O D E M . H Manifest constants for ZMODEM 3 * application to application file transfer protocol 4 * 05-23-87 Chuck Forsberg Omen Technology Inc 5 */ 6 #define ZPAD '*' /* 052 Padding character begins frames */ 7 #define ZDLE 030 /* Ctrl-X Zmodem escape - `ala BISYNC DLE */ 8 #define ZDLEE (ZDLE^0100) /* Escaped ZDLE as transmitted */ 9 #define ZBIN 'A' /* Binary frame indicator */ 10 #define ZHEX 'B' /* HEX frame indicator */ 11 #define ZBIN32 'C' /* Binary frame with 32 bit FCS */ 12 13 /* Frame types (see array "frametypes" in zm.c) */ 14 #define ZRQINIT 0 /* Request receive init */ 15 #define ZRINIT 1 /* Receive init */ 16 #define ZSINIT 2 /* Send init sequence (optional) */ 17 #define ZACK 3 /* ACK to above */ 18 #define ZFILE 4 /* File name from sender */ 19 #define ZSKIP 5 /* To sender: skip this file */ 20 #define ZNAK 6 /* Last packet was garbled */ 21 #define ZABORT 7 /* Abort batch transfers */ 22 #define ZFIN 8 /* Finish session */ 23 #define ZRPOS 9 /* Resume data trans at this position */ 24 #define ZDATA 10 /* Data packet(s) follow */ 25 #define ZEOF 11 /* End of file */ 26 #define ZFERR 12 /* Fatal Read or Write error Detected */ 27 #define ZCRC 13 /* Request for file CRC and response */ 28 #define ZCHALLENGE 14 /* Receiver's Challenge */ 29 #define ZCOMPL 15 /* Request is complete */ 30 #define ZCAN 16 /* Other end canned session with CAN*5 */ 31 #define ZFREECNT 17 /* Request for free bytes on filesystem */ 32 #define ZCOMMAND 18 /* Command from sending program */ 33 #define ZSTDERR 19 /* Output to standard error, data follows */ 34 35 /* ZDLE sequences */ 36 #define ZCRCE 'h' /* CRC next, frame ends, header packet follows */ 37 #define ZCRCG 'i' /* CRC next, frame continues nonstop */ 38 #define ZCRCQ 'j' /* CRC next, frame continues, ZACK expected */ 39 #define ZCRCW 'k' /* CRC next, ZACK expected, end of frame */ 40 #define ZRUB0 'l' /* Translate to rubout 0177 */ 41 #define ZRUB1 'm' /* Translate to rubout 0377 */ 42 43 /* zdlread return values (internal) */ 44 /* -1 is general error, -2 is timeout */ 45 #define GOTOR 0400 46 #define GOTCRCE (ZCRCE|GOTOR) /* ZDLE-ZCRCE received */ 47 #define GOTCRCG (ZCRCG|GOTOR) /* ZDLE-ZCRCG received */ 48 #define GOTCRCQ (ZCRCQ|GOTOR) /* ZDLE-ZCRCQ received */ 49 #define GOTCRCW (ZCRCW|GOTOR) /* ZDLE-ZCRCW received */ 50 #define GOTCAN (GOTOR|030) /* CAN*5 seen */ 51 52 /* Byte positions within header array */ 53 #define ZF0 3 /* First flags byte */ 54 #define ZF1 2 55 #define ZF2 1 56 #define ZF3 0 57 #define ZP0 0 /* Low order 8 bits of position */ 58 #define ZP1 1 59 #define ZP2 2 60 #define ZP3 3 /* High order 8 bits of file position */ 61 62 /* Bit Masks for ZRINIT flags byte ZF0 */ 63 #define CANFDX 01 /* Rx can send and receive true FDX */ 64 #define CANOVIO 02 /* Rx can receive data during disk I/O */ 65 #define CANBRK 04 /* Rx can send a break signal */ 66 #define CANCRY 010 /* Receiver can decrypt */ 67 #define CANLZW 020 /* Receiver can uncompress */ 68 #define CANFC32 040 /* Receiver can use 32 bit Frame Check */ 69 #define ESCCTL 0100 /* Receiver expects ctl chars to be escaped */ 70 #define ESC8 0200 /* Receiver expects 8th bit to be escaped */ 71 72 /* Parameters for ZSINIT frame */ 73 #define ZATTNLEN 32 /* Max length of attention string */ 74 /* Bit Masks for ZSINIT flags byte ZF0 */ 75 #define TESCCTL 0100 /* Transmitter expects ctl chars to be escaped */ 76 #define TESC8 0200 /* Transmitter expects 8th bit to be escaped */ 77 78 /* Parameters for ZFILE frame */ 79 /* Conversion options one of these in ZF0 */ 80 #define ZCBIN 1 /* Binary transfer - inhibit conversion */ 81 #define ZCNL 2 /* Convert NL to local end of line convention */ 82 #define ZCRESUM 3 /* Resume interrupted file transfer */ 83 /* Management include options, one of these ored in ZF1 */ 84 #define ZMSKNOLOC 0200 /* Skip file if not present at rx */ 85 /* Management options, one of these ored in ZF1 */ 86 #define ZMMASK 037 /* Mask for the choices below */ 87 #define ZMNEWL 1 /* Transfer if source newer or longer */ 88 #define ZMCRC 2 /* Transfer if different file CRC or length */ 89 #define ZMAPND 3 /* Append contents to existing file (if any) */ 90 #define ZMCLOB 4 /* Replace existing file */ 91 #define ZMNEW 5 /* Transfer if source newer */ 92 /* Number 5 is alive ... */ 93 #define ZMDIFF 6 /* Transfer if dates or lengths different */ 94 #define ZMPROT 7 /* Protect destination file */ 95 /* Transport options, one of these in ZF2 */ 96 #define ZTLZW 1 /* Lempel-Ziv compression */ 97 #define ZTCRYPT 2 /* Encryption */ 98 #define ZTRLE 3 /* Run Length encoding */ 99 /* Extended options for ZF3, bit encoded */ 100 #define ZXSPARS 64 /* Encoding for sparse file operations */ 101 102 /* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */ 103 #define ZCACK1 1 /* Acknowledge, then do command */ 104 105 /* Globals used by ZMODEM functions */ 106 extern int Rxframeind; /* ZBIN ZBIN32, or ZHEX type of frame received */ 107 extern int Rxtype; /* Type of header received */ 108 extern int Rxcount; /* Count of data bytes received */ 109 extern int Zrwindow; /* RX window size (controls garbage count) */ 110 extern int Rxtimeout; /* Tenths of seconds to wait for something */ 111 extern char Rxhdr[4]; /* Received header */ 112 extern char Txhdr[4]; /* Transmitted header */ 113 extern long Rxpos; /* Received file position */ 114 extern long Txpos; /* Transmitted file position */ 115 extern int Txfcs32; /* TURE means send binary frames with 32 bit FCS */ 116 extern int Crc32t; /* Display flag indicating 32 bit CRC being sent */ 117 extern int Crc32; /* Display flag indicating 32 bit CRC being received */ 118 extern int Znulls; /* Number of nulls to send at beginning of ZDATA hdr */ 119 extern char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */ 120 121 /* crctab.c */ 122 123 long UPDC32(int b , long c ); 124 125 /* rbsb.c */ 126 127 void from_cu(void); 128 void cucheck(void); 129 int rdchk(int f ); 130 int rdchk(int f ); 131 int mode(int n ); 132 void sendbrk(void); 133 134 /* zm.c */ 135 136 void zsbhdr(int type , char *hdr ); 137 void zsbh32(char *hdr , int type ); 138 void zshhdr(int type , char *hdr ); 139 void zsdata(char *buf , int length , int frameend ); 140 void zsda32(char *buf , int length , int frameend ); 141 int zrdata(char *buf , int length ); 142 int zrdat32(char *buf , int length ); 143 int zgethdr(char *hdr , int eflag ); 144 int zrbhdr(char *hdr ); 145 int zrbhdr32(char *hdr ); 146 int zrhhdr(char *hdr ); 147 void zputhex(int c ); 148 void zsendline(int c ); 149 int zgethex(void); 150 int zgeth1(void); 151 int zdlread(void); 152 int noxrd7(void); 153 void stohdr(long pos ); 154 long rclhdr(char *hdr ); 155 156 /* rz.c sz.c */ 157 158 void vfile(const char *s, ...); 159 void bibi(int n ); 160 161 /* End of ZMODEM.H */ 162