/* UNARJ.H, UNARJ, R JUNG, 05/30/91 * Include file * Copyright (c) 1990 by Robert K Jung. All rights reserved. * * This code may be freely used in programs that are NOT archivers. * * If you wish to distribute a modified version of this program, you * must include the source code. * * If you modify this program, I would appreciate a copy of the new * source code. I am holding the copyright on the source code, so * please do not delete my name from the program files or from the * documentation. * * Modification history: * Date Programmer Description of modification. * 04/05/91 R. Jung Rewrote code. * 04/23/91 M. Adler Portabilized. * 04/29/91 R. Jung Added volume label support. * 05/30/91 R. Jung Added SEEK_END definition. * */ #ifndef _ARH_DEF_ #define _ARH_DEF_ /* Use prototypes and ANSI libraries if __STDC__ */ #ifdef __STDC__ # define MODERN #endif /* __STDC__ */ /* Use prototypes and ANSI libraries if __TURBOC__ */ #ifdef __TURBOC__ # define MODERN #endif /* __TURBOC__ */ /* Use prototypes and ANSI libraries if _QC */ #ifdef _QC # define MODERN #endif /* __TURBOC__ */ /* Use prototypes and ANSI libraries if _OS2 */ #ifdef _OS2 # define MODERN #endif /* _OS2 */ /* Used to remove arguments in function prototypes for non-ANSI C */ #ifdef MODERN # define OF(a) a #else /* !MODERN */ # define OF(a) () #endif /* ?MODERN */ #ifdef MODERN typedef void voidp; #else /* !MODERN */ # define void int typedef char voidp; #endif /* ?MODERN */ #include #ifdef MODERN # include #else /* !MODERN */ # ifndef UCHAR_MAX # define UCHAR_MAX (255) # endif # ifndef CHAR_BIT # define CHAR_BIT (8) # endif # ifndef LONG_MAX # define LONG_MAX (0x7FFFFFFFL) # endif #endif /* ?MODERN */ #ifndef SEEK_SET # define SEEK_SET 0 #endif #ifndef SEEK_CUR # define SEEK_CUR 1 #endif #ifndef SEEK_END # define SEEK_END 2 #endif typedef unsigned char uchar; /* 8 bits or more */ typedef unsigned int uint; /* 16 - 32 bits or more */ typedef unsigned short ushort; /* 16 bits or more */ typedef unsigned long ulong; /* 32 bits or more */ #define USHRT_BIT (CHAR_BIT * sizeof(ushort)) /* ********************************************************* */ /* Environment definitions (implementation dependent) */ /* ********************************************************* */ #ifdef _QC #define __MSDOS__ #endif #ifdef __MSDOS__ #define OS 0 #define PATH_SEPARATORS "\\:" #define PATH_CHAR '\\' #define MAXSFX 25000L #define ARJ_SUFFIX ".ARJ" #endif #ifdef _OS2 #define OS 0 /* ??? */ #define PATH_SEPARATORS "\\:" #define PATH_CHAR '\\' #define SWITCH_CHARS "-/" #define MAXSFX 25000L #define ARJ_SUFFIX ".ARJ" #endif #ifdef __CI #define PRIME 1 #define OS 1 #define PATH_SEPARATORS ">" #define PATH_CHAR '>' #define FIX_PARITY(c) c |= ~ASCII_MASK #define DEFAULT_DIR "*>" #define ARJ_SUFFIX ".ARJ" #endif /* Error levels */ #ifndef ERROR_DEFINES #define ERROR_OK 0 /* success */ #define ERROR_WARN 1 /* minor problem (file not found) */ #define ERROR_FAIL 2 /* fatal error */ #define ERROR_CRC 3 /* CRC error */ #define ERROR_SECURE 4 /* ARJ security invalid or not found */ #define ERROR_WRITE 5 /* disk full */ #define ERROR_OPEN 6 /* can't open file */ #define ERROR_USER 7 /* user specified bad parameters */ #define ERROR_MEMORY 8 /* not enough memory */ #endif #ifndef MAXSFX /* size of self-extracting prefix */ #define MAXSFX 500000L #endif #ifndef FNAME_MAX #define FNAME_MAX 512 #endif #ifndef SWITCH_CHARS #define SWITCH_CHARS "-" #endif #ifndef FIX_PARITY #define FIX_PARITY(c) c &= ASCII_MASK #endif #ifndef ARJ_SUFFIX #define ARJ_SUFFIX ".arj" #endif #ifndef ARJ_DOT #define ARJ_DOT '.' #endif #ifndef DEFAULT_DIR #define DEFAULT_DIR "" #endif #ifndef OS #define OS 2 #endif #ifndef PATH_SEPARATORS #define PATH_SEPARATORS "/" #endif #ifndef PATH_CHAR #define PATH_CHAR '/' #endif /* ********************************************************* */ /* end of environmental defines */ /* ********************************************************* */ /* ********************************************************* */ /* * Structure of archive block (low order byte first): * * 2 header id (comment and local file) = 0xEA60 or 60000U * 2 basic header size (from 'first_hdr_size' thru 'comment' below) * = first_hdr_size + strlen(filename) + 1 + strlen(comment) + 1 * = 0 if end of archive * * 1 first_hdr_size (size up to 'extra data') * 1 archiver version number * 1 minimum archiver version to extract * 1 host OS (0 = MSDOS, 1 = PRIMOS, 2 = UNIX, 3 = AMIGA, 4 = MACDOS) * 1 arj flags (0x01 = GARBLED_FLAG, 0x02 = RESERVED) * (0x04 = VOLUME_FLAG, 0x08 = EXTFILE_FLAG) * (0x10 = PATHSYM_FLAG) * 1 method (0 = stored, 1 = compressed most ... 4 compressed fastest) * 1 file type (0 = binary, 1 = text, 2 = comment header) * (3 = directory, 4 = volume label) * 1 reserved * 4 date time stamp modified * 4 compressed size * 4 original size * 4 original file's CRC * 2 entryname position in filename * 2 file access mode * 2 host data * ? extra data * 4 bytes for extended file position * * ? filename (null-terminated) * ? comment (null-terminated) * * 4 basic header CRC * * 2 1st extended header size (0 if none) * ? 1st extended header * 4 1st extended header's CRC (not present if 0 extended header size) * ... * ? compressed file * * ********************************************************* */ /* ********************************************************* */ /* */ /* Time stamp format: */ /* */ /* 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 */ /* |<---- year-1980 --->|<- month ->|<--- day ---->| */ /* */ /* 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 */ /* |<--- hour --->|<---- minute --->|<- second/2 ->| */ /* */ /* ********************************************************* */ #define CODE_BIT 16 #define NULL_CHAR '\0' #define MAXMETHOD 4 #define ARJ_VERSION 3 #define ARJ_X_VERSION 3 /* decoder version */ #define ARJ_X1_VERSION 1 #define DEFAULT_METHOD 1 #define DEFAULT_TYPE 0 /* if type_sw is selected */ #define HEADER_ID 0xEA60 #define HEADER_ID_HI 0xEA #define HEADER_ID_LO 0x60 #define FIRST_HDR_SIZE 30 #define FIRST_HDR_SIZE_V 34 #define COMMENT_MAX 2048 #define HEADERSIZE_MAX (FIRST_HDR_SIZE + 10 + FNAME_MAX + COMMENT_MAX) #define BINARY_TYPE 0 /* This must line up with binary/text strings */ #define TEXT_TYPE 1 #define COMMENT_TYPE 2 #define DIR_TYPE 3 #define LABEL_TYPE 4 #define GARBLE_FLAG 0x01 #define VOLUME_FLAG 0x04 #define EXTFILE_FLAG 0x08 #define PATHSYM_FLAG 0x10 typedef ulong UCRC; /* CRC-32 */ #define CRC_MASK 0xFFFFFFFFL #define ARJ_PATH_CHAR '/' #define FA_RDONLY 0x01 /* Read only attribute */ #define FA_HIDDEN 0x02 /* Hidden file */ #define FA_SYSTEM 0x04 /* System file */ #define FA_LABEL 0x08 /* Volume label */ #define FA_DIREC 0x10 /* Directory */ #define FA_ARCH 0x20 /* Archive */ #define HOST_OS_NAMES { "MS-DOS","PRIMOS","UNIX","AMIGA","MAC-OS",NULL } /* Timestamp macros */ #define get_tx(m,d,h,n) (((ulong)m<<21)+((ulong)d<<16)+((ulong)h<<11)+(n<<5)) #define get_tstamp(y,m,d,h,n,s) ((((ulong)(y-1980))<<25)+get_tx(m,d,h,n)+(s/2)) #define ts_year(ts) ((uint)((ts >> 25) & 0x7f) + 1980) #define ts_month(ts) ((uint)(ts >> 21) & 0x0f) /* 1..12 means Jan..Dec */ #define ts_day(ts) ((uint)(ts >> 16) & 0x1f) /* 1..31 means 1st..31st */ #define ts_hour(ts) ((uint)(ts >> 11) & 0x1f) #define ts_min(ts) ((uint)(ts >> 5) & 0x3f) #define ts_sec(ts) ((uint)((ts & 0x1f) * 2)) /* unarj.c */ extern long origsize; extern long compsize; extern UCRC crc; extern FILE *arcfile; extern FILE *outfile; extern ushort bitbuf; extern uchar subbitbuf; extern uchar header[HEADERSIZE_MAX]; extern char arc_name[FNAME_MAX]; extern int bitcount; extern int file_type; extern int error_count; /* Global functions */ /* unarj.c */ void strupper OF((char *str)); voidp *malloc_msg OF((int size)); void disp_clock OF((void)); void error OF((char *fmt, char *arg)); void fillbuf OF((int n)); ushort getbits OF((int n)); void fwrite_txt_crc OF((uchar *p, int n)); void init_getbits OF((void)); /* environ.c */ FILE *file_open OF((char *name, char *mode)); int file_read OF((char *buf, int size, int nitems, FILE *stream)); int file_seek OF((FILE *stream, long offset, int mode)); long file_tell OF((FILE *stream)); int file_write OF((char *buf, int size, int nitems, FILE *stream)); voidp *xmalloc OF((int size)); void case_path OF((char *name)); int file_exists OF((char *name)); void get_mode_str OF((char *str, ushort fmode)); int set_ftime_mode OF((char *name, ulong timestamp, uint fmode, uchar host)); /* decode.c */ void decode OF((void)); void decode_f OF((void)); /* Message strings */ extern char M_VERSION []; extern char M_ARCDATE []; extern char M_BADCOMND[]; extern char M_BADCOMNT[]; extern char M_BADHEADR[]; extern char M_BADTABLE[]; extern char M_CANTOPEN[]; extern char M_CANTREAD[]; extern char M_CANTWRIT[]; extern char M_CRCERROR[]; extern char M_CRCOK []; extern char M_DIFFHOST[]; extern char M_ENCRYPT []; extern char M_ERRORCNT[]; extern char M_EXTRACT []; extern char M_FEXISTS []; extern char M_HEADRCRC[]; extern char M_NBRFILES[]; extern char M_NOMEMORY[]; extern char M_NOTARJ []; extern char M_PROCARC []; extern char M_SKIPPED []; extern char M_SUFFIX []; extern char M_TESTING []; extern char M_UNKNMETH[]; extern char M_UNKNTYPE[]; extern char M_UNKNVERS[]; #endif /* end UNARJ.H */