/* * Z M O D E M . H Manifest constants for ZMODEM * application to application file transfer protocol * 01-15-87 Chuck Forsberg Omen Technology Inc */ #define ZPAD '*' /* 052 Padding character begins frames */ #define ZDLE 030 /* Ctrl-X Zmodem escape - `ala BISYNC DLE */ #define ZDLEE (ZDLE^0100) /* Escaped ZDLE as transmitted */ #define ZBIN 'A' /* Binary frame indicator */ #define ZHEX 'B' /* HEX frame indicator */ #define ZBIN32 'C' /* Binary frame with 32 bit FCS */ /* Frame types (see array "frametypes" in zm.c) */ #define ZRQINIT 0 /* Request receive init */ #define ZRINIT 1 /* Receive init */ #define ZSINIT 2 /* Send init sequence (optional) */ #define ZACK 3 /* ACK to above */ #define ZFILE 4 /* File name from sender */ #define ZSKIP 5 /* To sender: skip this file */ #define ZNAK 6 /* Last packet was garbled */ #define ZABORT 7 /* Abort batch transfers */ #define ZFIN 8 /* Finish session */ #define ZRPOS 9 /* Resume data trans at this position */ #define ZDATA 10 /* Data packet(s) follow */ #define ZEOF 11 /* End of file */ #define ZFERR 12 /* Fatal Read or Write error Detected */ #define ZCRC 13 /* Request for file CRC and response */ #define ZCHALLENGE 14 /* Receiver's Challenge */ #define ZCOMPL 15 /* Request is complete */ #define ZCAN 16 /* Other end canned session with CAN*5 */ #define ZFREECNT 17 /* Request for free bytes on filesystem */ #define ZCOMMAND 18 /* Command from sending program */ #define ZSTDERR 19 /* Output to standard error, data follows */ /* ZDLE sequences */ #define ZCRCE 'h' /* CRC next, frame ends, header packet follows */ #define ZCRCG 'i' /* CRC next, frame continues nonstop */ #define ZCRCQ 'j' /* CRC next, frame continues, ZACK expected */ #define ZCRCW 'k' /* CRC next, ZACK expected, end of frame */ #define ZRUB0 'l' /* Translate to rubout 0177 */ #define ZRUB1 'm' /* Translate to rubout 0377 */ /* zdlread return values (internal) */ /* -1 is general error, -2 is timeout */ #define GOTOR 0400 #define GOTCRCE (ZCRCE|GOTOR) /* ZDLE-ZCRCE received */ #define GOTCRCG (ZCRCG|GOTOR) /* ZDLE-ZCRCG received */ #define GOTCRCQ (ZCRCQ|GOTOR) /* ZDLE-ZCRCQ received */ #define GOTCRCW (ZCRCW|GOTOR) /* ZDLE-ZCRCW received */ #define GOTCAN (GOTOR|030) /* CAN*5 seen */ /* Byte positions within header array */ #define ZF0 3 /* First flags byte */ #define ZF1 2 #define ZF2 1 #define ZF3 0 #define ZP0 0 /* Low order 8 bits of position */ #define ZP1 1 #define ZP2 2 #define ZP3 3 /* High order 8 bits of file position */ /* Bit Masks for ZRINIT flags byte ZF0 */ #define CANFDX 01 /* Rx can send and receive true FDX */ #define CANOVIO 02 /* Rx can receive data during disk I/O */ #define CANBRK 04 /* Rx can send a break signal */ #define CANCRY 010 /* Receiver can decrypt */ #define CANLZW 020 /* Receiver can uncompress */ #define CANFC32 040 /* Receiver can use 32 bit Frame Check */ /* Parameters for ZSINIT frame */ #define ZATTNLEN 32 /* Max length of attention string */ /* Parameters for ZFILE frame */ /* Conversion options one of these in ZF0 */ #define ZCBIN 1 /* Binary transfer - inhibit conversion */ #define ZCNL 2 /* Convert NL to local end of line convention */ #define ZCRESUM 3 /* Resume interrupted file transfer */ /* Management options, one of these in ZF1 */ #define ZMNEW 1 /* Transfer if source newer or longer */ #define ZMCRC 2 /* Transfer if different file CRC or length */ #define ZMAPND 3 /* Append contents to existing file (if any) */ #define ZMCLOB 4 /* Replace existing file */ #define ZMSPARS 5 /* Encoding for sparse file */ #define ZMDIFF 6 /* Transfer if dates or lengths different */ #define ZMPROT 7 /* Protect destination file */ /* Transport options, one of these in ZF2 */ #define ZTLZW 1 /* Lempel-Ziv compression */ #define ZTCRYPT 2 /* Encryption */ #define ZTRLE 3 /* Run Length encoding */ /* Parameters for ZCOMMAND frame ZF0 (otherwise 0) */ #define ZCACK1 1 /* Acknowledge, then do command */ long rclhdr(); /* Globals used by ZMODEM functions */ int Rxframeind; /* ZBIN ZBIN32, or ZHEX type of frame received */ int Rxtype; /* Type of header received */ int Rxcount; /* Count of data bytes received */ extern Rxtimeout; /* Tenths of seconds to wait for something */ char Rxhdr[4]; /* Received header */ char Txhdr[4]; /* Transmitted header */ long Rxpos; /* Received file position */ long Txpos; /* Transmitted file position */ int Txfcs32; /* TURE means send binary frames with 32 bit FCS */ int Znulls; /* Number of nulls to send at beginning of ZDATA hdr */ char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */