/* * * zooarc.c ©1995 by Matthias Meixner * * */ /***************************************** * * zoo-header * *****************************************/ #ifndef __ZOOARC_H #define __ZOOARC_H #define MWDEBUG 0 #if MWDEBUG #include #endif #include struct zoo_header { BYTE text[20]; /* archive header text */ ULONG zoo_tag; /* identifies archives */ LONG zoo_start; /* where the archive's data starts */ LONG zoo_minus; /* for consistency checking of zoo_start */ UBYTE major_ver; UBYTE minor_ver; /* minimum version to extract all files */ UBYTE type; /* type of archive header */ LONG acmt_pos; /* position of archive comment */ USHORT acmt_len; /* length of archive comment */ UBYTE vdata; /* byte in archive; data about versions */ }; #define HeadOffset_text 0 /* text in header */ #define HeadOffset_too_tag 20 /* zoo tag */ #define HeadOffset_zoo_start 24 /* start offset */ #define HeadOffset_zoo_minus 28 /* negative of start offset */ #define HeadOffset_major_ver 32 /* major version */ #define HeadOffset_minor_ver 33 /* minor version */ #define HeadOffset_type 34 /* archive header type */ #define HeadOffset_acmt_pos 35 /* position of archive comment */ #define HeadOffset_acmt_len 39 /* length of archive comment */ #define HeadOffset_vdata 41 /* version data */ #define HEADER_SIZE 42 #define SMALLHEADER_SIZE 34 #define HEADER_CONVTAB(var) char var[]={20,-4,-4,-4,3,-4,-2,1,0} #define ZOO_TAG 0xFDC4A7DCUL /* A random choice */ #define PRINTHEAD(h) \ printf("struct zoo_head {\n"\ " char text[20] : %s\n"\ " ULONG zoo_tag : %x\n"\ " LONG zoo_start : %d\n"\ " LONG zoo_minus : %d\n"\ " UBYTE major_ver : %d\n"\ " UBYTE minor_ver : %d\n"\ " UBYTE type : %x\n"\ " LONG acmt_pos : %x\n"\ " USHORT acmt_len : %d\n"\ " UBYTE vdata : %x\n"\ "};\n",\ (h).text,(h).zoo_tag,(h).zoo_start,(h).zoo_minus,\ (h).major_ver,(h).minor_ver,(h).type,(h).acmt_pos,\ (h).acmt_len,(h).vdata) /***************************************** * * file-entry * *****************************************/ struct direntry { ULONG zoo_tag; /* tag -- redundancy check */ UBYTE type; /* type of directory entry. always 1 for now */ UBYTE packing_method; /* 0 = no packing, 1 = normal LZW */ LONG next; /* pos'n of next directory entry */ LONG offset; /* position of this file */ USHORT date; /* DOS format date */ USHORT time; /* DOS format time */ USHORT file_crc; /* CRC of this file */ LONG org_size; LONG size_now; UBYTE major_ver; UBYTE minor_ver; /* minimum version needed to extract */ UBYTE deleted; /* will be 1 if deleted, 0 if not */ UBYTE struc; /* file structure if any */ LONG comment; /* points to comment; zero if none */ USHORT cmt_size; /* length of comment, 0 if none */ BYTE fname[13]; /* filename */ short var_dir_len; /* length of variable part of dir entry */ UBYTE tz; /* timezone where file was archived */ USHORT dir_crc; /* CRC of directory entry */ /* fields for variable part of directory entry follow */ UBYTE namlen; /* length of long filename */ UBYTE dirlen; /* length of directory name */ BYTE lfname[256]; /* long filename */ BYTE dirname[256]; /* directory name */ USHORT system_id; /* Filesystem ID */ ULONG fattr; /* File attributes -- 24 bits */ UBYTE vflag; /* version flag bits -- one byte in archive */ USHORT version_no; /* file version number if any */ }; #define DIRENT_CONVTAB1(var) char var[]={-4,2,-4,-4,-2,-2,-2,-4,-4,4,-4,-2,13,\ -2,1,-2,2,0} #define DIRENT_CONVTAB2(var) char var[]={-2,-3,1,-2,0} #define DIRENTSIZE_TYPE1 51 /* length of type 1 directory entry */ #define DIRENTSIZE_TYPE2 56 /* length of type 2 directory entry */ #define DirOffset_zoo_tag 0 /* tag within directory entry */ #define DirOffset_type 4 /* type of directory entry */ #define DirOffset_packing_method 5 /* packing method */ #define DirOffset_next 6 /* pos'n of next directory entry */ #define DirOffset_offset 10 /* position (offset) of this file */ #define DirOffset_date 14 /* DOS format date */ #define DirOffset_time 16 /* DOS format time */ #define DirOffset_file_crc 18 /* CRC of this file */ #define DirOffset_org_size 20 /* original size */ #define DirOffset_size_now 24 /* size now */ #define DirOffset_major_ver 28 /* major version number */ #define DirOffset_minor_ver 29 /* minor version number */ #define DirOffset_deleted 30 /* deleted or not */ #define DirOffset_struc 31 /* file structure */ #define DirOffset_comment 32 /* comment [offset] */ #define DirOffset_cmt_size 36 /* comment size */ #define DirOffset_fname 38 /* filename */ /********************* Type 2 ***************************/ #define DirOffset_var_dir_len 51 /* length of var. direntry */ #define DirOffset_tz 53 /* timezone */ #define DirOffset_dir_crc 54 /* CRC of directory entry */ /* Offsets within variable part of directory entry */ #define DirOffset_namlen 56 #define DirOffset_dirlen 57 #define DirOffset_lfname 58 /* Value used to stuff into timezone field if it is not known */ #define NO_TZ 127 /* Value for no file attributes */ #define NO_FATTR 0L /* version flag bits */ #define VFL_ON 0x80 /* enable version numbering */ #define VFL_GEN 0x0f /* generation count */ #define VFL_LAST 0x40 /* last generation of this file */ /* default generation value for archive */ #define GEN_DEFAULT 3 /* max generation count, file or archive */ #define MAXGEN 0x0f /* version mask to prune down to correct size on large-word machines */ #define VER_MASK 0xffff #define MAXDIRENT_SIZE (sizeof(struct direntry)-3) #define PRINT_DIRENT(h) \ printf("struct direntry {\n"\ " ULONG zoo_tag; :%x\n"\ " UBYTE type; :%d\n"\ " UBYTE packing_method; :%d\n"\ " LONG next; :%d\n"\ " LONG offset; :%d\n"\ " USHORT date; :%x\n"\ " USHORT time; :%x\n"\ " USHORT file_crc; :%x\n"\ " LONG org_size; :%d\n"\ " LONG size_now; :%d\n"\ " UBYTE major_ver; :%d\n"\ " UBYTE minor_ver; :%d\n"\ " UBYTE deleted; :%d\n"\ " UBYTE struc; :%d\n"\ " LONG comment; :%d\n"\ " USHORT cmt_size; :%d\n"\ " BYTE fname[13]; :%s\n"\ "\n"\ " short var_dir_len; :%d\n"\ " UBYTE tz; :%d\n"\ " USHORT dir_crc; :%d\n"\ "\n"\ " /* fields for variable part of directory entry follow */\n"\ "\n"\ " UBYTE namlen; :%d\n"\ " UBYTE dirlen; :%d\n"\ " BYTE lfname[256]; :%s\n"\ " BYTE dirname[256]; :%s\n"\ " USHORT system_id; :%d\n"\ " ULONG fattr; :%x\n"\ " UBYTE vflag; :%x\n"\ " USHORT version_no; :%d\n"\ "};\n",\ (h).zoo_tag,(h).type,(h).packing_method,(h).next,(h).offset,\ (h).date,(h).time,(h).file_crc,(h).org_size,(h).size_now,\ (h).major_ver,(h).minor_ver,(h).deleted,(h).struc,(h).comment,\ (h).cmt_size,(h).fname,(h).var_dir_len,(h).tz,(h).dir_crc,\ (h).namlen,(h).dirlen,(h).lfname,(h).dirname,(h).system_id,\ (h).fattr,(h).vflag,(h).version_no) /* Values for direntry.system_id */ #define SYSID_NIX 0 /* UNIX and similar filesystems */ #define SYSID_MS 1 /* MS-DOS filesystem */ #define SYSID_PORTABLE 2 /* Portable syntax */ #ifndef TESTONLY #include struct ZooLock { struct XarSubLock Lock; LONG DirentPos,DataPos; LONG DirentSize; SHORT Method; /* Packing method */ BYTE GFlag; }; void Error(long); extern FILE *arcfile; long lzd(struct XarSubIO *); int lzc(struct XarSubIO *); void free_lzc(void); void free_lzd(void); #endif #endif