[1] | 1 | /* LibSAP |
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| 2 | * Version 0.9.4 |
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| 3 | * Copyright (C) 2000-2003 Eric Botcazou |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 18 | */ |
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| 19 | |
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| 20 | |
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| 21 | #include <ctype.h> |
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| 22 | #include <stdio.h> |
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| 23 | #include <stdlib.h> |
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| 24 | #include <string.h> |
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| 25 | #include <time.h> |
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| 26 | #include "libsap.h" |
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| 27 | |
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| 28 | |
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| 29 | int sap_errno; |
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| 30 | |
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| 31 | |
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| 32 | #define FILENAME_LENGTH 128 |
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| 33 | #define MAX_ARCHIVE 8 |
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| 34 | |
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| 35 | #define SAP_MAGIC_NUM 0xB3 |
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| 36 | #define SAP_HEADER_SIZE 66 |
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| 37 | static const char sap_header[]="\0SYSTEME D'ARCHIVAGE PUKALL S.A.P. " |
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| 38 | "(c) Alexandre PUKALL Avril 1998"; |
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| 39 | |
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| 40 | |
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| 41 | static const int sap_format_table[][3] = { |
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| 42 | { SAP_NTRACKS1, SAP_SECTSIZE1, SAP_TRACKSIZE1 }, |
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| 43 | { SAP_NTRACKS2, SAP_SECTSIZE2, SAP_TRACKSIZE2 } |
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| 44 | }; |
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| 45 | |
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| 46 | #define SAP_NTRACKS(f) sap_format_table[f-SAP_FORMAT1][0] |
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| 47 | #define SAP_SECTSIZE(f) sap_format_table[f-SAP_FORMAT1][1] |
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| 48 | #define SAP_TRACKSIZE(f) sap_format_table[f-SAP_FORMAT1][2] |
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| 49 | |
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| 50 | #define SAP_EXTSECTSIZE(f) (SAP_SECTSIZE(f) + sizeof(sapsector_t) - SAP_SECTSIZE1) |
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| 51 | |
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| 52 | |
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| 53 | static short int crcpuk_temp; |
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| 54 | |
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| 55 | static short int puktable[]={ |
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| 56 | 0x0000, 0x1081, 0x2102, 0x3183, |
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| 57 | 0x4204, 0x5285, 0x6306, 0x7387, |
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| 58 | 0x8408, 0x9489, 0xa50a, 0xb58b, |
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| 59 | 0xc60c, 0xd68d, 0xe70e, 0xf78f |
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| 60 | }; |
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| 61 | |
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| 62 | |
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| 63 | #define NO_ARCHIVE 0 |
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| 64 | #define EMPTY_ARCHIVE 1 |
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| 65 | #define FILLED_ARCHIVE 2 |
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| 66 | #define FULL_ARCHIVE 3 |
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| 67 | |
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| 68 | static struct { |
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| 69 | int format; |
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| 70 | int state; |
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| 71 | int ntracks; |
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| 72 | FILE *file; |
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| 73 | } archive[MAX_ARCHIVE+1]; |
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| 74 | |
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| 75 | #define ID_FORMAT(id) archive[id].format |
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| 76 | #define ID_STATE(id) archive[id].state |
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| 77 | #define ID_NTRACKS(id) archive[id].ntracks |
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| 78 | #define ID_FILE(id) archive[id].file |
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| 79 | |
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| 80 | |
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| 81 | /* constants for the TO logical disk format */ |
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| 82 | #define TO_NSECTS 16 |
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| 83 | #define TO_SECTOR_PER_BLOCK 8 |
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| 84 | |
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| 85 | #define TO_SECTSIZE1 255 /* not 256 */ |
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| 86 | #define TO_FAT_START1 257 |
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| 87 | #define TO_NBLOCKS1 160 |
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| 88 | #define TO_BLOCKSIZE1 (TO_SECTOR_PER_BLOCK*TO_SECTSIZE1) |
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| 89 | #define TO_FILESIZE_MAX1 (TO_NBLOCKS1-2) |
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| 90 | #define TO_DIR_START1 512 |
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| 91 | |
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| 92 | #define TO_SECTSIZE2 127 /* not 128 */ |
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| 93 | #define TO_FAT_START2 129 |
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| 94 | #define TO_NBLOCKS2 80 |
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| 95 | #define TO_BLOCKSIZE2 (TO_SECTOR_PER_BLOCK*TO_SECTSIZE2) |
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| 96 | #define TO_FILESIZE_MAX2 (TO_NBLOCKS2-2) |
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| 97 | #define TO_DIR_START2 256 |
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| 98 | |
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| 99 | #define TO_FILLER_BYTE 0xE5 |
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| 100 | #define TO_TAG_RESERVED 0xFE |
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| 101 | #define TO_TAG_FREE 0xFF |
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| 102 | #define TO_END_BLOCK_OFFSET 0xC0 |
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| 103 | |
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| 104 | #define TO_DIRENTRY_LENGTH 32 |
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| 105 | #define TO_NAME 0 |
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| 106 | #define TO_NAME_LENGTH 8 |
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| 107 | #define TO_EXT 8 |
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| 108 | #define TO_EXT_LENGTH 3 |
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| 109 | #define TO_FILE_TYPE 11 |
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| 110 | #define TO_DATA_TYPE 12 |
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| 111 | #define TO_FIRST_BLOCK 13 |
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| 112 | #define TO_END_SIZE 14 |
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| 113 | #define TO_COMMENT 16 |
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| 114 | #define TO_COMMENT_LENGTH 8 |
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| 115 | #define TO_DATE_DAY 24 |
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| 116 | #define TO_DATE_MONTH 25 |
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| 117 | #define TO_DATE_YEAR 26 |
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| 118 | #define TO_CHG_MODE 30 |
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| 119 | #define TO_CHG_CHECKSUM 31 |
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| 120 | |
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| 121 | #define TO_DIRENTRY_PER_SECTOR1 8 |
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| 122 | #define TO_NDIRENTRIES1 (TO_NSECTS-2)*TO_DIRENTRY_PER_SECTOR1 |
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| 123 | |
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| 124 | #define TO_DIRENTRY_PER_SECTOR2 4 |
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| 125 | #define TO_NDIRENTRIES2 (TO_NSECTS-2)*TO_DIRENTRY_PER_SECTOR2 |
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| 126 | |
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| 127 | static const int to_format_table[][8] = { |
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| 128 | { TO_SECTSIZE1, TO_FAT_START1, TO_NBLOCKS1, TO_BLOCKSIZE1, |
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| 129 | TO_FILESIZE_MAX1, TO_DIR_START1, TO_DIRENTRY_PER_SECTOR1, TO_NDIRENTRIES1 }, |
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| 130 | { TO_SECTSIZE2, TO_FAT_START2, TO_NBLOCKS2, TO_BLOCKSIZE2, |
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| 131 | TO_FILESIZE_MAX2, TO_DIR_START2, TO_DIRENTRY_PER_SECTOR2, TO_NDIRENTRIES2 } |
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| 132 | }; |
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| 133 | |
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| 134 | #define TO_SECTSIZE(f) to_format_table[f-SAP_FORMAT1][0] |
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| 135 | #define TO_FAT_START(f) to_format_table[f-SAP_FORMAT1][1] |
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| 136 | #define TO_NBLOCKS(f) to_format_table[f-SAP_FORMAT1][2] |
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| 137 | #define TO_BLOCKSIZE(f) to_format_table[f-SAP_FORMAT1][3] |
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| 138 | #define TO_FILESIZE_MAX(f) to_format_table[f-SAP_FORMAT1][4] |
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| 139 | #define TO_DIR_START(f) to_format_table[f-SAP_FORMAT1][5] |
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| 140 | #define TO_DIRENTRY_PER_SECTOR(f) to_format_table[f-SAP_FORMAT1][6] |
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| 141 | #define TO_NDIRENTRIES(f) to_format_table[f-SAP_FORMAT1][7] |
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| 142 | |
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| 143 | |
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| 144 | /* constants for the TO memory layout */ |
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| 145 | #define TO_BANKSIZE 16384 |
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| 146 | |
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| 147 | |
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| 148 | /* file types */ |
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| 149 | enum { |
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| 150 | FTYPE_BASIC, |
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| 151 | FTYPE_DATA, |
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| 152 | FTYPE_MACHINE, |
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| 153 | FTYPE_ASM, |
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| 154 | FTYPE_OTHERS, |
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| 155 | FTYPE_PARAGRAPHE = 0xA |
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| 156 | }; |
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| 157 | |
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| 158 | static char ftype_sym[5] = { 'B', 'D', 'M', 'A', '*' }; |
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| 159 | |
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| 160 | enum { |
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| 161 | DTYPE_BINARY, |
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| 162 | DTYPE_ASCII = 0xFF, |
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| 163 | DTYPE_OTHERS = 2 |
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| 164 | }; |
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| 165 | |
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| 166 | static char dtype_sym[3] = { 'B', 'A', '*' }; |
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| 167 | |
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| 168 | struct extension_t { |
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| 169 | char tag[TO_EXT_LENGTH+1]; |
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| 170 | unsigned char ftype; |
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| 171 | unsigned char dtype; |
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| 172 | }; |
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| 173 | |
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| 174 | enum { |
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| 175 | EXT_TYPE_BAS, |
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| 176 | EXT_TYPE_DAT, |
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| 177 | EXT_TYPE_ASC, |
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| 178 | EXT_TYPE_ASM, |
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| 179 | EXT_TYPE_BIN, |
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| 180 | EXT_TYPE_MAP, |
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| 181 | EXT_TYPE_CHG, |
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| 182 | EXT_TYPE_CFG, |
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| 183 | EXT_TYPE_BAT, |
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| 184 | EXT_TYPE_CAR, |
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| 185 | EXT_TYPE_PAR, |
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| 186 | EXT_TYPE_UNKNOWN, |
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| 187 | EXT_TYPE_MAX |
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| 188 | }; |
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| 189 | |
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| 190 | static struct extension_t ext_type[EXT_TYPE_MAX] = { |
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| 191 | { "BAS", FTYPE_BASIC, DTYPE_BINARY }, |
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| 192 | { "DAT", FTYPE_DATA, DTYPE_ASCII }, |
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| 193 | { "ASC", FTYPE_DATA, DTYPE_ASCII }, |
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| 194 | { "ASM", FTYPE_ASM, DTYPE_ASCII }, |
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| 195 | { "BIN", FTYPE_MACHINE, DTYPE_BINARY }, |
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| 196 | { "MAP", FTYPE_MACHINE, DTYPE_BINARY }, |
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| 197 | { "CHG", FTYPE_DATA, DTYPE_ASCII }, |
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| 198 | { "CFG", FTYPE_MACHINE, DTYPE_BINARY }, |
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| 199 | { "BAT", FTYPE_BASIC, DTYPE_BINARY }, |
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| 200 | { "CAR", FTYPE_DATA, DTYPE_ASCII }, |
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| 201 | { "PAR", FTYPE_PARAGRAPHE, DTYPE_BINARY }, |
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| 202 | { "???", FTYPE_MACHINE, DTYPE_BINARY } |
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| 203 | }; |
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| 204 | |
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| 205 | |
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| 206 | #define MIN(x,y) (((x) < (y)) ? (x) : (y)) |
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| 207 | |
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| 208 | |
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| 209 | |
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| 210 | /************************************************/ |
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| 211 | /*** private functions: helper routines ***/ |
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| 212 | /************************************************/ |
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| 213 | |
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| 214 | |
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| 215 | /* get_id: |
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| 216 | * Finds the first empty id, returns 0 if has failed. |
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| 217 | */ |
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| 218 | static int get_id(void) |
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| 219 | { |
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| 220 | int i; |
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| 221 | |
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| 222 | for (i=MAX_ARCHIVE; i>0; i--) { |
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| 223 | if (archive[i].state == NO_ARCHIVE) |
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| 224 | break; |
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| 225 | } |
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| 226 | |
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| 227 | return i; |
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| 228 | } |
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| 229 | |
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| 230 | |
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| 231 | |
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| 232 | /* clean_string: |
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| 233 | * Helper function to clean up character strings. |
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| 234 | */ |
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| 235 | static inline void clean_string(unsigned char *str) |
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| 236 | { |
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| 237 | while (*str) { |
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| 238 | if ((*str<32) || (*str>127)) |
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| 239 | *str = '#'; |
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| 240 | |
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| 241 | str++; |
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| 242 | } |
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| 243 | } |
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| 244 | |
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| 245 | |
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| 246 | |
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| 247 | /************************************************/ |
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| 248 | /*** private functions: SAP format support ***/ |
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| 249 | /************************************************/ |
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| 250 | |
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| 251 | |
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| 252 | /* crc_pukall: |
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| 253 | * Computes the new CRC from the c data. |
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| 254 | */ |
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| 255 | static void crc_pukall(short int c) |
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| 256 | { |
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| 257 | short int index; |
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| 258 | |
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| 259 | index = (crcpuk_temp ^ c) & 0xf; |
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| 260 | crcpuk_temp = ((crcpuk_temp>>4) & 0xfff) ^ puktable[index]; |
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| 261 | |
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| 262 | c >>= 4; |
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| 263 | |
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| 264 | index = (crcpuk_temp ^ c) & 0xf; |
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| 265 | crcpuk_temp = ((crcpuk_temp>>4) & 0xfff) ^ puktable[index]; |
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| 266 | } |
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| 267 | |
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| 268 | |
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| 269 | |
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| 270 | /* do_crc: |
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| 271 | * Computes the CRC for the specified SAP sector. |
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| 272 | */ |
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| 273 | static void do_crc(sapsector_t *sapsector, int format) |
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| 274 | { |
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| 275 | int i; |
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| 276 | |
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| 277 | crcpuk_temp = 0xffff; |
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| 278 | |
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| 279 | crc_pukall(sapsector->format); |
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| 280 | crc_pukall(sapsector->protection); |
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| 281 | crc_pukall(sapsector->track); |
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| 282 | crc_pukall(sapsector->sector); |
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| 283 | |
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| 284 | for (i=0; i<SAP_SECTSIZE(format); i++) |
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| 285 | crc_pukall(sapsector->data[i]); |
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| 286 | } |
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| 287 | |
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| 288 | |
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| 289 | |
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| 290 | /* do_read_sector: |
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| 291 | * Performs the low-level read operation for the specified sector. |
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| 292 | */ |
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| 293 | static void do_read_sector(sapID id, sapsector_t *sapsector) |
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| 294 | { |
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| 295 | unsigned char buffer[sizeof(sapsector_t)]; |
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| 296 | int format = ID_FORMAT(id); |
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| 297 | int i; |
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| 298 | |
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| 299 | i=fread(buffer, sizeof(char), SAP_EXTSECTSIZE(format), ID_FILE(id)); |
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| 300 | |
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| 301 | sapsector->format = buffer[0]; |
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| 302 | sapsector->protection = buffer[1]; |
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| 303 | sapsector->track = buffer[2]; |
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| 304 | sapsector->sector = buffer[3]; |
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| 305 | |
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| 306 | for (i=0; i<SAP_SECTSIZE(format); i++) |
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| 307 | sapsector->data[i] = buffer[4+i]^SAP_MAGIC_NUM; |
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| 308 | |
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| 309 | sapsector->data[SAP_SECTSIZE(format)] = buffer[4+i]; |
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| 310 | sapsector->data[SAP_SECTSIZE(format)+1] = buffer[4+i+1]; |
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| 311 | } |
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| 312 | |
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| 313 | |
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| 314 | |
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| 315 | /* do_write_sector: |
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| 316 | * Performs the low-level write operation for the specified sector. |
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| 317 | */ |
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| 318 | static void do_write_sector(sapID id, sapsector_t *sapsector) |
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| 319 | { |
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| 320 | unsigned char buffer[sizeof(sapsector_t)]; |
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| 321 | int format = ID_FORMAT(id); |
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| 322 | int i; |
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| 323 | |
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| 324 | /* fill in the write buffer */ |
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| 325 | buffer[0] = sapsector->format; |
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| 326 | buffer[1] = sapsector->protection; |
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| 327 | buffer[2] = sapsector->track; |
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| 328 | buffer[3] = sapsector->sector; |
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| 329 | |
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| 330 | for (i=0; i<SAP_SECTSIZE(format); i++) |
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| 331 | buffer[4+i] = sapsector->data[i]^SAP_MAGIC_NUM; |
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| 332 | |
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| 333 | /* compute the CRC */ |
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| 334 | do_crc(sapsector, format); |
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| 335 | buffer[4+i] = sapsector->data[SAP_SECTSIZE(format)] = (crcpuk_temp>>8)&0xff; |
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| 336 | buffer[4+i+1] = sapsector->data[SAP_SECTSIZE(format)+1] = crcpuk_temp&0xff; |
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| 337 | |
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| 338 | fwrite(buffer, sizeof(char), SAP_EXTSECTSIZE(format), ID_FILE(id)); |
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| 339 | } |
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| 340 | |
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| 341 | |
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| 342 | |
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| 343 | /* seek_pos: |
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| 344 | * Seeks the specified position in the SAP archive. |
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| 345 | */ |
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| 346 | static void seek_pos(sapID id, int track, int sect) |
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| 347 | { |
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| 348 | int pos; |
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| 349 | |
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| 350 | pos = SAP_HEADER_SIZE + (track*SAP_NSECTS + sect-1) * SAP_EXTSECTSIZE(ID_FORMAT(id)); |
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| 351 | |
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| 352 | fseek(ID_FILE(id), pos, SEEK_SET); |
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| 353 | } |
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| 354 | |
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| 355 | |
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| 356 | |
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| 357 | /************************************************/ |
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| 358 | /*** private functions: Thomson DOS support ***/ |
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| 359 | /************************************************/ |
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| 360 | |
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| 361 | |
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| 362 | |
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| 363 | /* get_file_size: |
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| 364 | * Returns the size in blocks of the specified file on disk. |
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| 365 | */ |
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| 366 | static int get_file_size(int format, int n, const unsigned char trk20_data[]) |
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| 367 | { |
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| 368 | const unsigned char *fat_data, *entry_data; |
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| 369 | int block, size = 0; |
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| 370 | |
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| 371 | fat_data = trk20_data + TO_FAT_START(format); |
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| 372 | entry_data = trk20_data + TO_DIR_START(format) + n*TO_DIRENTRY_LENGTH; |
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| 373 | |
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| 374 | block = entry_data[TO_FIRST_BLOCK]; |
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| 375 | |
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| 376 | while ((block<TO_NBLOCKS(format)) && (size<TO_FILESIZE_MAX(format))) { |
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| 377 | size++; |
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| 378 | block = fat_data[block]; |
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| 379 | } |
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| 380 | |
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| 381 | return size; |
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| 382 | } |
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| 383 | |
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| 384 | |
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| 385 | |
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| 386 | /* get_dskf: |
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| 387 | * Returns the amount of free space in blocks on disk. |
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| 388 | */ |
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| 389 | static int get_dskf(int format, const unsigned char trk20_data[]) |
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| 390 | { |
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| 391 | const unsigned char *fat_data; |
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| 392 | int i, dskf = 0; |
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| 393 | |
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| 394 | fat_data = trk20_data + TO_FAT_START(format); |
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| 395 | |
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| 396 | for (i=0; i<TO_NBLOCKS(format); i++) { |
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| 397 | if (fat_data[i] == TO_TAG_FREE) |
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| 398 | dskf++; |
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| 399 | } |
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| 400 | |
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| 401 | return dskf; |
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| 402 | } |
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| 403 | |
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| 404 | |
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| 405 | |
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| 406 | /* extract_dir_entry: |
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| 407 | * Extracts one dir entry and returns the number of characters. |
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| 408 | */ |
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| 409 | static int extract_dir_entry(int format, char buffer[], int buffer_size, int n, const unsigned char trk20_data[]) |
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| 410 | { |
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| 411 | const unsigned char *entry_data; |
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| 412 | char name[TO_NAME_LENGTH+1], ext[TO_EXT_LENGTH+1], date[9], *comment; |
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| 413 | unsigned char ftype, dtype; |
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| 414 | int i, len, size; |
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| 415 | |
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| 416 | entry_data = trk20_data + TO_DIR_START(format) + n*TO_DIRENTRY_LENGTH; |
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| 417 | |
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| 418 | comment = malloc(TO_COMMENT_LENGTH+1); |
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| 419 | |
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| 420 | if ((entry_data[TO_NAME] == 0) || (entry_data[TO_NAME] == TO_TAG_FREE)) |
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| 421 | return 0; |
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| 422 | |
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| 423 | if (entry_data[TO_NAME] == 1) { |
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| 424 | /* display only comment (if any) */ |
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| 425 | if (entry_data[TO_COMMENT]) { |
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| 426 | comment[0] = '\0'; |
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| 427 | strncat(comment,(char*)(entry_data+TO_COMMENT), TO_COMMENT_LENGTH); |
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| 428 | |
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| 429 | for (i=1; i<TO_COMMENT_LENGTH; i++) { |
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| 430 | if (comment[i] == 18) { /* DC2 (repetition) ? */ |
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| 431 | len = strlen(comment); |
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| 432 | comment = realloc(comment, len + comment[i+1]); |
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| 433 | memmove(comment+i+comment[i+1], comment+i+2, len - (i+2) + 1); |
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| 434 | memset(comment+i, comment[i-1], comment[i+1]); |
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| 435 | } |
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| 436 | } |
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| 437 | |
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| 438 | return sprintf(buffer, "%30s%s\n", "", comment); |
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| 439 | } |
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| 440 | else { |
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| 441 | return 0; |
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| 442 | } |
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| 443 | } |
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| 444 | |
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| 445 | /* name */ |
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| 446 | name[0] = 0; |
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| 447 | strncat(name,(char*)(entry_data+TO_NAME), TO_NAME_LENGTH); |
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| 448 | clean_string((unsigned char*)name); |
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| 449 | |
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| 450 | /* extension */ |
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| 451 | ext[0] = 0; |
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| 452 | strncat(ext,(char*)(entry_data+TO_EXT), TO_EXT_LENGTH); |
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| 453 | clean_string((unsigned char *)ext); |
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| 454 | |
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| 455 | /* file type */ |
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| 456 | ftype = entry_data[TO_FILE_TYPE]; |
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| 457 | ftype = (ftype > 3 ? ftype_sym[4] : ftype_sym[ftype]); |
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| 458 | |
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| 459 | /* data type */ |
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| 460 | dtype = entry_data[TO_DATA_TYPE]; |
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| 461 | dtype = (dtype == 0 ? dtype_sym[0] : (dtype == 0xFF ? dtype_sym[1] : dtype_sym[2])); |
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| 462 | |
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| 463 | /* size */ |
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| 464 | size = get_file_size(format, n, trk20_data) * ((TO_BLOCKSIZE(format) + 1024) / 1024); |
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| 465 | |
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| 466 | /* date */ |
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| 467 | if ((entry_data[TO_DATE_DAY] >= 1) && (entry_data[TO_DATE_DAY] <= 31) && |
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| 468 | (entry_data[TO_DATE_MONTH] >= 1) && (entry_data[TO_DATE_MONTH] <= 12) && |
---|
| 469 | (entry_data[TO_DATE_YEAR] <= 99)) |
---|
| 470 | sprintf(date, "%2d-%2d-%2d", entry_data[TO_DATE_DAY], entry_data[TO_DATE_MONTH], entry_data[TO_DATE_YEAR]); |
---|
| 471 | else |
---|
| 472 | date[0] = 0; |
---|
| 473 | |
---|
| 474 | /* comment */ |
---|
| 475 | comment[0] = 0; |
---|
| 476 | if (entry_data[TO_COMMENT]) |
---|
| 477 | strncat(comment,(char*)(entry_data+TO_COMMENT), TO_COMMENT_LENGTH); |
---|
| 478 | |
---|
| 479 | /* display the entry */ |
---|
| 480 | i = sprintf(buffer, "%-8s %-3s %c %c %-3d %-8s %s\n", name, ext, ftype, dtype, size, date, comment); |
---|
| 481 | free(comment); |
---|
| 482 | |
---|
| 483 | return i; |
---|
| 484 | |
---|
| 485 | (void) buffer_size; /* DJGPP 2.03 lacks snprintf() */ |
---|
| 486 | } |
---|
| 487 | |
---|
| 488 | |
---|
| 489 | |
---|
| 490 | /* get_filename: |
---|
| 491 | * Detects whether the file entry is valid and returns the filename if so. |
---|
| 492 | */ |
---|
| 493 | static int get_filename(char filename[], const unsigned char entry_data[]) |
---|
| 494 | { |
---|
| 495 | int i, j; |
---|
| 496 | |
---|
| 497 | if ((entry_data[TO_NAME] == 0) || (entry_data[TO_NAME] == TO_TAG_FREE)) |
---|
| 498 | return -1; |
---|
| 499 | |
---|
| 500 | /* name */ |
---|
| 501 | strncpy(filename,(char*)(entry_data+TO_NAME), TO_NAME_LENGTH); |
---|
| 502 | |
---|
| 503 | for (i=0; i<TO_NAME_LENGTH; i++) { |
---|
| 504 | if (filename[i] == 32) |
---|
| 505 | break; |
---|
| 506 | } |
---|
| 507 | |
---|
| 508 | filename[i++] = '.'; |
---|
| 509 | filename[i] = 0; |
---|
| 510 | |
---|
| 511 | /* extension */ |
---|
| 512 | strncat(filename,(char*)(entry_data+TO_EXT), TO_EXT_LENGTH); |
---|
| 513 | |
---|
| 514 | for (j=0; j<TO_EXT_LENGTH; j++) { |
---|
| 515 | if (filename[i+j] == 32) |
---|
| 516 | break; |
---|
| 517 | } |
---|
| 518 | |
---|
| 519 | if (filename[i+j-1] == '.') |
---|
| 520 | filename[i+j-1] = 0; |
---|
| 521 | else |
---|
| 522 | filename[i+j] = 0; |
---|
| 523 | |
---|
| 524 | return 0; |
---|
| 525 | } |
---|
| 526 | |
---|
| 527 | |
---|
| 528 | |
---|
| 529 | /* decode_filename: |
---|
| 530 | * Decodes the specified raw filename into a valid dir entry. |
---|
| 531 | */ |
---|
| 532 | static void decode_filename(unsigned char entry_data[], const char filename[], int file_size) |
---|
| 533 | { |
---|
| 534 | const char *p; |
---|
| 535 | char shortname[128]; |
---|
| 536 | char ext[TO_EXT_LENGTH+1]; |
---|
| 537 | int i, type, len, ext_len = 0; |
---|
| 538 | FILE *file; |
---|
| 539 | |
---|
| 540 | /* zero the entry data */ |
---|
| 541 | memset(entry_data + TO_NAME, 32, TO_NAME_LENGTH + TO_EXT_LENGTH); |
---|
| 542 | entry_data[TO_COMMENT] = 0; |
---|
| 543 | memset(entry_data + TO_COMMENT+1, 32, TO_COMMENT_LENGTH-1); |
---|
| 544 | memset(entry_data + TO_DATE_DAY, 0, TO_DIRENTRY_LENGTH - TO_DATE_DAY); |
---|
| 545 | |
---|
| 546 | /* find short name */ |
---|
| 547 | len = strlen(filename); |
---|
| 548 | p = filename + len - 1; |
---|
| 549 | |
---|
| 550 | while ((p>=filename) && (*p != '/')) |
---|
| 551 | p--; |
---|
| 552 | |
---|
| 553 | shortname[0] = 0; |
---|
| 554 | strncat(shortname, p+1, sizeof(shortname) - 1); |
---|
| 555 | |
---|
| 556 | /* find extension */ |
---|
| 557 | len = strlen(shortname); |
---|
| 558 | p = shortname + len - 1; |
---|
| 559 | |
---|
| 560 | while ((p>=shortname) && (*p != '.')) |
---|
| 561 | p--; |
---|
| 562 | |
---|
| 563 | if (p < shortname) { /* no extension? */ |
---|
| 564 | memcpy(entry_data+TO_NAME, shortname, MIN(TO_NAME_LENGTH, len)); |
---|
| 565 | type = EXT_TYPE_MAX-1; |
---|
| 566 | } |
---|
| 567 | else { |
---|
| 568 | /* name */ |
---|
| 569 | memcpy(entry_data+TO_NAME, shortname, MIN(TO_NAME_LENGTH, p - shortname)); |
---|
| 570 | |
---|
| 571 | /* extension */ |
---|
| 572 | ext_len = MIN(TO_EXT_LENGTH, shortname + len - 1 - p); |
---|
| 573 | memcpy(entry_data+TO_EXT, p+1, ext_len); |
---|
| 574 | |
---|
| 575 | /* build upper case extension */ |
---|
| 576 | ext[0] = 0; |
---|
| 577 | strncat(ext, p+1, ext_len); |
---|
| 578 | for (i=0; i<ext_len; i++) |
---|
| 579 | ext[i] = toupper(ext[i]); |
---|
| 580 | |
---|
| 581 | /* search for a standard extension */ |
---|
| 582 | for (type=0; type<EXT_TYPE_MAX-1; type++) { |
---|
| 583 | if (strcmp(ext_type[type].tag, ext) == 0) |
---|
| 584 | break; |
---|
| 585 | } |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | /* set file and data types */ |
---|
| 589 | entry_data[TO_FILE_TYPE] = ext_type[type].ftype; |
---|
| 590 | entry_data[TO_DATA_TYPE] = ext_type[type].dtype; |
---|
| 591 | |
---|
| 592 | /* special treatment */ |
---|
| 593 | switch (type) { |
---|
| 594 | |
---|
| 595 | case EXT_TYPE_BAS: |
---|
| 596 | /* differentiate ASCII from BINARY data */ |
---|
| 597 | file = fopen(filename, "rb"); |
---|
| 598 | if (file) { |
---|
| 599 | if ((fgetc(file) == '\r') && (fgetc(file) == '\n')) |
---|
| 600 | entry_data[TO_DATA_TYPE] = DTYPE_ASCII; |
---|
| 601 | fclose(file); |
---|
| 602 | } |
---|
| 603 | break; |
---|
| 604 | |
---|
| 605 | case EXT_TYPE_CHG: |
---|
| 606 | /* automatic launch + number of requested banks */ |
---|
| 607 | entry_data[TO_CHG_MODE] = 0x80 | ((file_size/TO_BANKSIZE)&0x3F); |
---|
| 608 | |
---|
| 609 | /* 8-bit checksum */ |
---|
| 610 | for (i=0; i<TO_NAME_LENGTH; i++) |
---|
| 611 | entry_data[TO_CHG_CHECKSUM] += entry_data[i]; |
---|
| 612 | break; |
---|
| 613 | } |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | |
---|
| 617 | |
---|
| 618 | /* seek_file: |
---|
| 619 | * Seeks a file in the specified directory and returns its index number if found. |
---|
| 620 | */ |
---|
| 621 | static int seek_file(int format, const char filename[], const unsigned char dir_data[]) |
---|
| 622 | { |
---|
| 623 | char entry_name[TO_NAME_LENGTH + 1 + TO_EXT_LENGTH + 1]; |
---|
| 624 | int i; |
---|
| 625 | |
---|
| 626 | for (i=0; i<TO_NDIRENTRIES(format); i++) { |
---|
| 627 | if ((get_filename(entry_name, dir_data+i*TO_DIRENTRY_LENGTH) == 0) && (strcmp(entry_name, filename) == 0)) |
---|
| 628 | return i; |
---|
| 629 | } |
---|
| 630 | |
---|
| 631 | return -1; |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | |
---|
| 635 | |
---|
| 636 | /* wildcard handling code by Michael Bulkin (M.A.Bukin@inp.nsk.su) */ |
---|
| 637 | #define WCD_MATCH_TRY 0 |
---|
| 638 | #define WCD_MATCH_ONE 1 |
---|
| 639 | #define WCD_MATCH_ANY 2 |
---|
| 640 | |
---|
| 641 | |
---|
| 642 | struct WCD_MATCH_DATA |
---|
| 643 | { |
---|
| 644 | int type; |
---|
| 645 | const char *s1; |
---|
| 646 | const char *s2; |
---|
| 647 | }; |
---|
| 648 | |
---|
| 649 | |
---|
| 650 | |
---|
| 651 | /* wcdcmp: |
---|
| 652 | * Compares two strings ('*' matches any number of characters, |
---|
| 653 | * '?' matches any character). |
---|
| 654 | */ |
---|
| 655 | static int wcdcmp(const char *s1, const char *s2) |
---|
| 656 | { |
---|
| 657 | static unsigned int size = 0; |
---|
| 658 | static struct WCD_MATCH_DATA *data = NULL; |
---|
| 659 | const char *s1end; |
---|
| 660 | int index, c1, c2; |
---|
| 661 | |
---|
| 662 | /* handle NULL arguments */ |
---|
| 663 | if ((!s1) && (!s2)) { |
---|
| 664 | if (data) { |
---|
| 665 | free(data); |
---|
| 666 | data = NULL; |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | return 1; |
---|
| 670 | } |
---|
| 671 | |
---|
| 672 | s1end = s1 + strlen(s1); |
---|
| 673 | |
---|
| 674 | /* allocate larger working area if necessary */ |
---|
| 675 | if (data && (size < strlen(s2))) { |
---|
| 676 | free(data); |
---|
| 677 | data = NULL; |
---|
| 678 | } |
---|
| 679 | |
---|
| 680 | if (!data) { |
---|
| 681 | size = strlen(s2); |
---|
| 682 | data = malloc(sizeof(struct WCD_MATCH_DATA) * size * 2 + 1); |
---|
| 683 | if (!data) |
---|
| 684 | return 1; |
---|
| 685 | } |
---|
| 686 | |
---|
| 687 | index = 0; |
---|
| 688 | data[0].s1 = s1; |
---|
| 689 | data[0].s2 = s2; |
---|
| 690 | data[0].type = WCD_MATCH_TRY; |
---|
| 691 | |
---|
| 692 | while (index >= 0) { |
---|
| 693 | s1 = data[index].s1; |
---|
| 694 | s2 = data[index].s2; |
---|
| 695 | c1 = *s1; |
---|
| 696 | c2 = *s2; |
---|
| 697 | |
---|
| 698 | switch (data[index].type) { |
---|
| 699 | |
---|
| 700 | case WCD_MATCH_TRY: |
---|
| 701 | if (c2 == 0) { |
---|
| 702 | /* pattern exhausted */ |
---|
| 703 | if (c1 == 0) |
---|
| 704 | return 0; |
---|
| 705 | else |
---|
| 706 | index--; |
---|
| 707 | } |
---|
| 708 | else if (c1 == 0) { |
---|
| 709 | /* string exhausted */ |
---|
| 710 | while (*s2 == '*') |
---|
| 711 | s2++; |
---|
| 712 | if (*s2 == 0) |
---|
| 713 | return 0; |
---|
| 714 | else |
---|
| 715 | index--; |
---|
| 716 | } |
---|
| 717 | else if (c2 == '*') { |
---|
| 718 | /* try to match the rest of pattern with empty string */ |
---|
| 719 | data[index++].type = WCD_MATCH_ANY; |
---|
| 720 | data[index].s1 = s1end; |
---|
| 721 | data[index].s2 = s2 + 1; |
---|
| 722 | data[index].type = WCD_MATCH_TRY; |
---|
| 723 | } |
---|
| 724 | else if ((c2 == '?') || (c1 == c2)) { |
---|
| 725 | /* try to match the rest */ |
---|
| 726 | data[index++].type = WCD_MATCH_ONE; |
---|
| 727 | data[index].s1 = s1 + 1; |
---|
| 728 | data[index].s2 = s2 + 1; |
---|
| 729 | data[index].type = WCD_MATCH_TRY; |
---|
| 730 | } |
---|
| 731 | else |
---|
| 732 | index--; |
---|
| 733 | break; |
---|
| 734 | |
---|
| 735 | case WCD_MATCH_ONE: |
---|
| 736 | /* the rest of string did not match, try earlier */ |
---|
| 737 | index--; |
---|
| 738 | break; |
---|
| 739 | |
---|
| 740 | case WCD_MATCH_ANY: |
---|
| 741 | /* rest of string did not match, try add more chars to string tail */ |
---|
| 742 | if (--data[index + 1].s1 >= s1) { |
---|
| 743 | data[index + 1].type = WCD_MATCH_TRY; |
---|
| 744 | index++; |
---|
| 745 | } |
---|
| 746 | else |
---|
| 747 | index--; |
---|
| 748 | break; |
---|
| 749 | |
---|
| 750 | default: |
---|
| 751 | /* this is a bird? This is a plane? No it's a bug!!! */ |
---|
| 752 | return 1; |
---|
| 753 | } |
---|
| 754 | } |
---|
| 755 | |
---|
| 756 | return 1; |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | |
---|
| 760 | |
---|
| 761 | /* seek_wilcard: |
---|
| 762 | * Seeks a wildcard in the specified directory and returns its index number if found. |
---|
| 763 | */ |
---|
| 764 | static int seek_wildcard(int format, char filename[], const char pattern[], const unsigned char dir_data[]) |
---|
| 765 | { |
---|
| 766 | char entry_name[TO_NAME_LENGTH + 1 + TO_EXT_LENGTH + 1]; |
---|
| 767 | static int i = 0; |
---|
| 768 | int j; |
---|
| 769 | |
---|
| 770 | while (i<TO_NDIRENTRIES(format)) { |
---|
| 771 | j = i++; |
---|
| 772 | |
---|
| 773 | if ((get_filename(entry_name, dir_data+j*TO_DIRENTRY_LENGTH) == 0) && (wcdcmp(entry_name, pattern) == 0)) { |
---|
| 774 | strcpy(filename, entry_name); |
---|
| 775 | return j; |
---|
| 776 | } |
---|
| 777 | } |
---|
| 778 | |
---|
| 779 | i = 0; |
---|
| 780 | |
---|
| 781 | /* to avoid leaking memory */ |
---|
| 782 | wcdcmp(NULL, NULL); |
---|
| 783 | |
---|
| 784 | return -1; |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | |
---|
| 788 | |
---|
| 789 | /* find_free_block_sym: |
---|
| 790 | * Finds a free block using a symmetrical search. |
---|
| 791 | */ |
---|
| 792 | static int find_free_block_sym(int format, unsigned char fat_data[]) |
---|
| 793 | { |
---|
| 794 | int block; |
---|
| 795 | |
---|
| 796 | block = TO_NBLOCKS(format)/2 - 1; |
---|
| 797 | |
---|
| 798 | while (block < TO_NBLOCKS(format)) { |
---|
| 799 | if (fat_data[block] == TO_TAG_FREE) |
---|
| 800 | return block; |
---|
| 801 | |
---|
| 802 | if (fat_data[TO_NBLOCKS(format) - block - 2] == TO_TAG_FREE) /* fat_data[-1] is always 0 */ |
---|
| 803 | return TO_NBLOCKS(format) - block - 2; |
---|
| 804 | |
---|
| 805 | block++; |
---|
| 806 | } |
---|
| 807 | |
---|
| 808 | return -1; |
---|
| 809 | } |
---|
| 810 | |
---|
| 811 | |
---|
| 812 | |
---|
| 813 | /* find_free_block_rel: |
---|
| 814 | * Finds a free block using a relative search. |
---|
| 815 | */ |
---|
| 816 | static int find_free_block_rel(int format, int block, unsigned char fat_data[]) |
---|
| 817 | { |
---|
| 818 | if (block < TO_NBLOCKS(format)/2) { |
---|
| 819 | while (block >= 0) { |
---|
| 820 | if (fat_data[block] == TO_TAG_FREE) |
---|
| 821 | break; |
---|
| 822 | |
---|
| 823 | block--; |
---|
| 824 | } |
---|
| 825 | } |
---|
| 826 | else { |
---|
| 827 | while (block < TO_NBLOCKS(format)) { |
---|
| 828 | if (fat_data[block] == TO_TAG_FREE) |
---|
| 829 | break; |
---|
| 830 | |
---|
| 831 | block++; |
---|
| 832 | } |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | if ((block<0) || (block>=TO_NBLOCKS(format))) |
---|
| 836 | block = find_free_block_sym(format, fat_data); |
---|
| 837 | |
---|
| 838 | return block; |
---|
| 839 | } |
---|
| 840 | |
---|
| 841 | |
---|
| 842 | |
---|
| 843 | /* do_add_file: |
---|
| 844 | * Performs the low-level add operation for the specified file entry. |
---|
| 845 | */ |
---|
| 846 | static void do_add_file(sapID id, FILE *file, int file_size, unsigned char entry_data[], int n, unsigned char trk20_data[]) |
---|
| 847 | { |
---|
| 848 | sapsector_t sapsector; |
---|
| 849 | unsigned char *fat_data; |
---|
| 850 | unsigned int block, next_block; |
---|
| 851 | int sect; |
---|
| 852 | int dummy; |
---|
| 853 | |
---|
| 854 | /* find the first block */ |
---|
| 855 | fat_data = trk20_data + TO_FAT_START(ID_FORMAT(id)); |
---|
| 856 | |
---|
| 857 | block = find_free_block_sym(ID_FORMAT(id), fat_data); |
---|
| 858 | entry_data[TO_FIRST_BLOCK] = block; |
---|
| 859 | |
---|
| 860 | sapsector.format = 0; |
---|
| 861 | sapsector.protection = 0; |
---|
| 862 | |
---|
| 863 | /* write full blocks */ |
---|
| 864 | while (file_size > TO_BLOCKSIZE(ID_FORMAT(id))) { |
---|
| 865 | sapsector.track = block/2; |
---|
| 866 | sapsector.sector = 1 + (block%2 ? TO_SECTOR_PER_BLOCK : 0); |
---|
| 867 | seek_pos(id, sapsector.track, sapsector.sector); |
---|
| 868 | |
---|
| 869 | for (sect=0; sect<TO_SECTOR_PER_BLOCK; sect++) { |
---|
| 870 | dummy=fread(sapsector.data, sizeof(char), TO_SECTSIZE(ID_FORMAT(id)), file); |
---|
| 871 | do_write_sector(id, &sapsector); |
---|
| 872 | sapsector.sector++; |
---|
| 873 | } |
---|
| 874 | |
---|
| 875 | fat_data[block] = TO_TAG_RESERVED; /* temporarily reserved */ |
---|
| 876 | next_block = find_free_block_rel(ID_FORMAT(id), block, fat_data); |
---|
| 877 | |
---|
| 878 | fat_data[block] = next_block; |
---|
| 879 | block = next_block; |
---|
| 880 | |
---|
| 881 | file_size -= TO_BLOCKSIZE(ID_FORMAT(id)); |
---|
| 882 | } |
---|
| 883 | |
---|
| 884 | /* write remaining full sectors */ |
---|
| 885 | sapsector.track = block/2; |
---|
| 886 | sapsector.sector = 1 + (block%2 ? TO_SECTOR_PER_BLOCK : 0); |
---|
| 887 | seek_pos(id, sapsector.track, sapsector.sector); |
---|
| 888 | |
---|
| 889 | fat_data[block] = TO_END_BLOCK_OFFSET + 1; |
---|
| 890 | |
---|
| 891 | while (file_size > TO_SECTSIZE(ID_FORMAT(id))) { |
---|
| 892 | dummy=fread(sapsector.data, sizeof(char), TO_SECTSIZE(ID_FORMAT(id)), file); |
---|
| 893 | do_write_sector(id, &sapsector); |
---|
| 894 | sapsector.sector++; |
---|
| 895 | |
---|
| 896 | fat_data[block]++; |
---|
| 897 | file_size -= TO_SECTSIZE(ID_FORMAT(id)); |
---|
| 898 | } |
---|
| 899 | |
---|
| 900 | /* write remaining individual bytes */ |
---|
| 901 | dummy=fread(sapsector.data, sizeof(char), TO_SECTSIZE(ID_FORMAT(id)), file); |
---|
| 902 | do_write_sector(id, &sapsector); |
---|
| 903 | |
---|
| 904 | entry_data[TO_END_SIZE] = file_size>>8; |
---|
| 905 | entry_data[TO_END_SIZE+1] = file_size; |
---|
| 906 | |
---|
| 907 | /* write the new entry into the directory */ |
---|
| 908 | memcpy(trk20_data + TO_DIR_START(ID_FORMAT(id)) + n*TO_DIRENTRY_LENGTH, entry_data, TO_DIRENTRY_LENGTH); |
---|
| 909 | } |
---|
| 910 | |
---|
| 911 | |
---|
| 912 | |
---|
| 913 | /* do_delete_file: |
---|
| 914 | * Performs the low-level delete operation for the specified file entry and |
---|
| 915 | * returns the size of file. |
---|
| 916 | */ |
---|
| 917 | static int do_delete_file(sapID id, const char filename[], int n, unsigned char trk20_data[]) |
---|
| 918 | { |
---|
| 919 | unsigned char *fat_data, *entry_data; |
---|
| 920 | int block, old_block, size = 0; |
---|
| 921 | |
---|
| 922 | (void) filename; |
---|
| 923 | |
---|
| 924 | fat_data = trk20_data + TO_FAT_START(ID_FORMAT(id)); |
---|
| 925 | entry_data = trk20_data + TO_DIR_START(ID_FORMAT(id)) + n*TO_DIRENTRY_LENGTH; |
---|
| 926 | |
---|
| 927 | /* delete the file entry */ |
---|
| 928 | entry_data[TO_NAME] = 0; |
---|
| 929 | |
---|
| 930 | /* read start block */ |
---|
| 931 | block = entry_data[TO_FIRST_BLOCK]; |
---|
| 932 | |
---|
| 933 | /* mark FAT entries with the TO_TAG_FREE tag */ |
---|
| 934 | while ((block<TO_NBLOCKS(ID_FORMAT(id))) && (size<TO_FILESIZE_MAX(ID_FORMAT(id)))) { |
---|
| 935 | old_block = block; |
---|
| 936 | block = fat_data[block]; |
---|
| 937 | fat_data[old_block] = TO_TAG_FREE; |
---|
| 938 | size++; |
---|
| 939 | } |
---|
| 940 | |
---|
| 941 | size *= TO_BLOCKSIZE(ID_FORMAT(id)); |
---|
| 942 | |
---|
| 943 | if (block > TO_END_BLOCK_OFFSET+1) |
---|
| 944 | size += (block - TO_END_BLOCK_OFFSET - 1) * TO_SECTSIZE(ID_FORMAT(id)); |
---|
| 945 | |
---|
| 946 | size += (entry_data[TO_END_SIZE]<<8) + entry_data[TO_END_SIZE+1]; |
---|
| 947 | |
---|
| 948 | return size; |
---|
| 949 | } |
---|
| 950 | |
---|
| 951 | |
---|
| 952 | |
---|
| 953 | /* do_extract_file: |
---|
| 954 | * Performs the low-level extract operation for the specified file entry and |
---|
| 955 | * returns the size of file. |
---|
| 956 | */ |
---|
| 957 | static int do_extract_file(sapID id, const char filename[], int n, unsigned char trk20_data[]) |
---|
| 958 | { |
---|
| 959 | sapsector_t sapsector; |
---|
| 960 | unsigned char *fat_data, *entry_data; |
---|
| 961 | int sect, end_size, size = 0; |
---|
| 962 | unsigned int block; |
---|
| 963 | FILE *file; |
---|
| 964 | |
---|
| 965 | fat_data = trk20_data + TO_FAT_START(ID_FORMAT(id)); |
---|
| 966 | entry_data = trk20_data + TO_DIR_START(ID_FORMAT(id)) + n*TO_DIRENTRY_LENGTH; |
---|
| 967 | |
---|
| 968 | /* read start block */ |
---|
| 969 | block = entry_data[TO_FIRST_BLOCK]; |
---|
| 970 | |
---|
| 971 | if ((file=fopen(filename, "wb")) == NULL) { |
---|
| 972 | sap_errno = SAP_EPERM; |
---|
| 973 | return 0; |
---|
| 974 | } |
---|
| 975 | |
---|
| 976 | /* extract full blocks */ |
---|
| 977 | while ((fat_data[block]<TO_NBLOCKS(ID_FORMAT(id))) && (size<TO_FILESIZE_MAX(ID_FORMAT(id)))) { |
---|
| 978 | seek_pos(id, block/2, 1 + (block%2 ? TO_SECTOR_PER_BLOCK : 0)); |
---|
| 979 | |
---|
| 980 | for (sect=0; sect<TO_SECTOR_PER_BLOCK; sect++) { |
---|
| 981 | do_read_sector(id, &sapsector); |
---|
| 982 | fwrite(sapsector.data, sizeof(char), TO_SECTSIZE(ID_FORMAT(id)), file); |
---|
| 983 | } |
---|
| 984 | |
---|
| 985 | block = fat_data[block]; |
---|
| 986 | size++; |
---|
| 987 | } |
---|
| 988 | |
---|
| 989 | size *= TO_BLOCKSIZE(ID_FORMAT(id)); |
---|
| 990 | |
---|
| 991 | /* extract remaining full sectors */ |
---|
| 992 | seek_pos(id, block/2, 1 + (block%2 ? TO_SECTOR_PER_BLOCK : 0)); |
---|
| 993 | |
---|
| 994 | for (sect=0; sect<(fat_data[block] - TO_END_BLOCK_OFFSET - 1); sect++) { |
---|
| 995 | do_read_sector(id, &sapsector); |
---|
| 996 | fwrite(sapsector.data, sizeof(char), TO_SECTSIZE(ID_FORMAT(id)), file); |
---|
| 997 | size += TO_SECTSIZE(ID_FORMAT(id)); |
---|
| 998 | } |
---|
| 999 | |
---|
| 1000 | /* extract remaining individual bytes */ |
---|
| 1001 | do_read_sector(id, &sapsector); |
---|
| 1002 | end_size = (entry_data[TO_END_SIZE]<<8) + entry_data[TO_END_SIZE+1]; |
---|
| 1003 | fwrite(sapsector.data, sizeof(char), end_size, file); |
---|
| 1004 | size += end_size; |
---|
| 1005 | |
---|
| 1006 | fclose(file); |
---|
| 1007 | |
---|
| 1008 | return size; |
---|
| 1009 | } |
---|
| 1010 | |
---|
| 1011 | |
---|
| 1012 | |
---|
| 1013 | /************************************************/ |
---|
| 1014 | /*** public low-level functions ***/ |
---|
| 1015 | /************************************************/ |
---|
| 1016 | |
---|
| 1017 | |
---|
| 1018 | /* _ExtractDir: |
---|
| 1019 | * Extract the directory from track 20 and returns the number of lines. |
---|
| 1020 | */ |
---|
| 1021 | int _ExtractDir(char buffer[], int buffer_size, int drive, int density, const unsigned char trk20_data[]) |
---|
| 1022 | { |
---|
| 1023 | unsigned char disk_name[TO_NAME_LENGTH+1]; |
---|
| 1024 | int dskf, i, len, pos, lines = 0; |
---|
| 1025 | int format = (density == 1 ? SAP_FORMAT2 : SAP_FORMAT1); |
---|
| 1026 | |
---|
| 1027 | /* name of the volume */ |
---|
| 1028 | strncpy((char*)disk_name, (char*)trk20_data, TO_NAME_LENGTH); |
---|
| 1029 | |
---|
| 1030 | if ((disk_name[0] == 0) || (disk_name[0] == TO_TAG_FREE)) { |
---|
| 1031 | strcpy((char*)disk_name, "No Name "); |
---|
| 1032 | } |
---|
| 1033 | else { |
---|
| 1034 | disk_name[TO_NAME_LENGTH] = 0; |
---|
| 1035 | clean_string(disk_name); |
---|
| 1036 | } |
---|
| 1037 | |
---|
| 1038 | /* dskf */ |
---|
| 1039 | dskf = get_dskf(format, trk20_data) * ((TO_BLOCKSIZE(format) + 1024) / 1024); |
---|
| 1040 | |
---|
| 1041 | /* header */ |
---|
| 1042 | pos = sprintf(buffer, "%s density %d:%s DSKF = %d\n", (density == 1 ? "Single" : "Double"), drive, disk_name, dskf); |
---|
| 1043 | lines++; |
---|
| 1044 | |
---|
| 1045 | /* directory entries */ |
---|
| 1046 | for (i=0; i<TO_NDIRENTRIES(format); i++) { |
---|
| 1047 | len = extract_dir_entry(format, buffer+pos, buffer_size-pos, i, trk20_data); |
---|
| 1048 | |
---|
| 1049 | if (len>0) { |
---|
| 1050 | pos += len; |
---|
| 1051 | lines++; |
---|
| 1052 | } |
---|
| 1053 | } |
---|
| 1054 | |
---|
| 1055 | return lines; |
---|
| 1056 | } |
---|
| 1057 | |
---|
| 1058 | |
---|
| 1059 | |
---|
| 1060 | /* _ForEachFile: |
---|
| 1061 | * Executes the specified callback funtion on each file matching the pattern. |
---|
| 1062 | */ |
---|
| 1063 | int _ForEachFile(sapID id, const char pattern[], sapfilecb_t callback, int save_back) |
---|
| 1064 | { |
---|
| 1065 | char filename[TO_NAME_LENGTH + 1 + TO_EXT_LENGTH + 1]; |
---|
| 1066 | unsigned char trk20_data[SAP_TRACKSIZE1], *dir_data; |
---|
| 1067 | int n, ret = 0; |
---|
| 1068 | |
---|
| 1069 | switch (ID_STATE(id)) { |
---|
| 1070 | |
---|
| 1071 | case NO_ARCHIVE: |
---|
| 1072 | sap_errno = SAP_EINVAL; |
---|
| 1073 | return 0; |
---|
| 1074 | |
---|
| 1075 | case EMPTY_ARCHIVE: |
---|
| 1076 | sap_errno = SAP_EBUSY; |
---|
| 1077 | return 0; |
---|
| 1078 | |
---|
| 1079 | case FILLED_ARCHIVE: |
---|
| 1080 | sap_errno = SAP_EBUSY; |
---|
| 1081 | return 0; |
---|
| 1082 | |
---|
| 1083 | case FULL_ARCHIVE: |
---|
| 1084 | break; |
---|
| 1085 | } |
---|
| 1086 | |
---|
| 1087 | /* read track 20 */ |
---|
| 1088 | sap_ReadSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1089 | |
---|
| 1090 | dir_data = trk20_data + TO_DIR_START(ID_FORMAT(id)); |
---|
| 1091 | |
---|
| 1092 | if (strpbrk(pattern, "?*")) { /* wildcards? */ |
---|
| 1093 | while ((n=seek_wildcard(ID_FORMAT(id), filename, pattern, dir_data)) >= 0) |
---|
| 1094 | ret += callback(id, filename, n, trk20_data); |
---|
| 1095 | } |
---|
| 1096 | else { |
---|
| 1097 | n = seek_file(ID_FORMAT(id), pattern, dir_data); |
---|
| 1098 | |
---|
| 1099 | if (n<0) |
---|
| 1100 | sap_errno = SAP_ENOENT; |
---|
| 1101 | else |
---|
| 1102 | ret = callback(id, pattern, n, trk20_data); |
---|
| 1103 | } |
---|
| 1104 | |
---|
| 1105 | if (save_back) { |
---|
| 1106 | /* save track 20 */ |
---|
| 1107 | sap_WriteSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1108 | } |
---|
| 1109 | |
---|
| 1110 | return ret; |
---|
| 1111 | } |
---|
| 1112 | |
---|
| 1113 | |
---|
| 1114 | |
---|
| 1115 | /************************************************/ |
---|
| 1116 | /*** API functions: physical format support ***/ |
---|
| 1117 | /************************************************/ |
---|
| 1118 | |
---|
| 1119 | |
---|
| 1120 | /* OpenArchive: |
---|
| 1121 | * Opens an existing archive, |
---|
| 1122 | * returns the sapID on success or SAP_ERROR on error. |
---|
| 1123 | */ |
---|
| 1124 | sapID sap_OpenArchive(const char filename[], int *format) |
---|
| 1125 | { |
---|
| 1126 | char header[SAP_HEADER_SIZE]; |
---|
| 1127 | sapID id; |
---|
| 1128 | int dummy; |
---|
| 1129 | |
---|
| 1130 | /* seek for an empty id */ |
---|
| 1131 | if (!(id=get_id())) { |
---|
| 1132 | sap_errno = SAP_ETOOMANY; |
---|
| 1133 | return SAP_ERROR; |
---|
| 1134 | } |
---|
| 1135 | |
---|
| 1136 | if ((ID_FILE(id)=fopen(filename, "rb+")) == NULL) { |
---|
| 1137 | sap_errno = SAP_ENOENT; |
---|
| 1138 | return SAP_ERROR; |
---|
| 1139 | } |
---|
| 1140 | |
---|
| 1141 | /* read the header */ |
---|
| 1142 | dummy=fread(header, sizeof(char), SAP_HEADER_SIZE, ID_FILE(id)); |
---|
| 1143 | |
---|
| 1144 | /* find the format */ |
---|
| 1145 | if ((header[0] != SAP_FORMAT1) && (header[0] != SAP_FORMAT2)) { |
---|
| 1146 | fclose(ID_FILE(id)); |
---|
| 1147 | sap_errno = SAP_EBADF; |
---|
| 1148 | return SAP_ERROR; |
---|
| 1149 | } |
---|
| 1150 | |
---|
| 1151 | *format = header[0]; |
---|
| 1152 | |
---|
| 1153 | /* check the header */ |
---|
| 1154 | header[0] = 0; |
---|
| 1155 | |
---|
| 1156 | if (strncmp(header, sap_header, SAP_HEADER_SIZE) != 0) { |
---|
| 1157 | fclose(ID_FILE(id)); |
---|
| 1158 | sap_errno = SAP_EBADF; |
---|
| 1159 | return SAP_ERROR; |
---|
| 1160 | } |
---|
| 1161 | |
---|
| 1162 | ID_FORMAT(id) = *format; |
---|
| 1163 | ID_STATE(id) = FULL_ARCHIVE; |
---|
| 1164 | ID_NTRACKS(id) = SAP_NTRACKS(*format); |
---|
| 1165 | |
---|
| 1166 | return id; |
---|
| 1167 | } |
---|
| 1168 | |
---|
| 1169 | |
---|
| 1170 | |
---|
| 1171 | /* CreateArchive: |
---|
| 1172 | * Creates an archive skeleton and writes the header, |
---|
| 1173 | * returns the sapID on success or SAP_ERROR on error. |
---|
| 1174 | */ |
---|
| 1175 | sapID sap_CreateArchive(const char filename[], int format) |
---|
| 1176 | { |
---|
| 1177 | char header[SAP_HEADER_SIZE]; |
---|
| 1178 | sapID id; |
---|
| 1179 | |
---|
| 1180 | if ((format != SAP_FORMAT1) && (format != SAP_FORMAT2)) { |
---|
| 1181 | sap_errno = SAP_EINVAL; |
---|
| 1182 | return SAP_ERROR; |
---|
| 1183 | } |
---|
| 1184 | |
---|
| 1185 | /* seek for an empty id */ |
---|
| 1186 | if (!(id=get_id())) { |
---|
| 1187 | sap_errno = SAP_ETOOMANY; |
---|
| 1188 | return SAP_ERROR; |
---|
| 1189 | } |
---|
| 1190 | |
---|
| 1191 | if ((ID_FILE(id)=fopen(filename, "wb")) == NULL) { |
---|
| 1192 | sap_errno = SAP_EPERM; |
---|
| 1193 | return SAP_ERROR; |
---|
| 1194 | } |
---|
| 1195 | |
---|
| 1196 | /* write the header */ |
---|
| 1197 | memcpy(header, sap_header, SAP_HEADER_SIZE); |
---|
| 1198 | header[0] = format; |
---|
| 1199 | |
---|
| 1200 | fwrite(header, sizeof(char), SAP_HEADER_SIZE, ID_FILE(id)); |
---|
| 1201 | |
---|
| 1202 | ID_FILE(id) = freopen(filename, "rb+", ID_FILE(id)); |
---|
| 1203 | seek_pos(id, 0 ,1); |
---|
| 1204 | |
---|
| 1205 | ID_FORMAT(id) = format; |
---|
| 1206 | ID_STATE(id) = EMPTY_ARCHIVE; |
---|
| 1207 | ID_NTRACKS(id) = 0; |
---|
| 1208 | |
---|
| 1209 | return id; |
---|
| 1210 | } |
---|
| 1211 | |
---|
| 1212 | |
---|
| 1213 | |
---|
| 1214 | /* CloseArchive: |
---|
| 1215 | * Closes the archive, filling it up with empty tracks if needed, |
---|
| 1216 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1217 | */ |
---|
| 1218 | int sap_CloseArchive(sapID id) |
---|
| 1219 | { |
---|
| 1220 | sapsector_t sapsector; |
---|
| 1221 | int format = ID_FORMAT(id); |
---|
| 1222 | int track, sect; |
---|
| 1223 | |
---|
| 1224 | switch (ID_STATE(id)) { |
---|
| 1225 | |
---|
| 1226 | case NO_ARCHIVE: |
---|
| 1227 | sap_errno = SAP_EINVAL; |
---|
| 1228 | return SAP_ERROR; |
---|
| 1229 | |
---|
| 1230 | case EMPTY_ARCHIVE: |
---|
| 1231 | case FILLED_ARCHIVE: |
---|
| 1232 | sapsector.format = 0; |
---|
| 1233 | sapsector.protection = 0; |
---|
| 1234 | memset(sapsector.data, TO_FILLER_BYTE, SAP_SECTSIZE(format)); |
---|
| 1235 | |
---|
| 1236 | for (track=ID_NTRACKS(id); track<SAP_NTRACKS(format); track++) { |
---|
| 1237 | for (sect=1; sect<=SAP_NSECTS; sect++) { |
---|
| 1238 | sapsector.track = track; |
---|
| 1239 | sapsector.sector = sect; |
---|
| 1240 | do_write_sector(id, &sapsector); |
---|
| 1241 | } |
---|
| 1242 | } |
---|
| 1243 | break; |
---|
| 1244 | |
---|
| 1245 | case FULL_ARCHIVE: |
---|
| 1246 | break; |
---|
| 1247 | } |
---|
| 1248 | |
---|
| 1249 | fclose(ID_FILE(id)); |
---|
| 1250 | ID_STATE(id) = NO_ARCHIVE; |
---|
| 1251 | |
---|
| 1252 | return SAP_OK; |
---|
| 1253 | } |
---|
| 1254 | |
---|
| 1255 | |
---|
| 1256 | |
---|
| 1257 | /* FillArchive: |
---|
| 1258 | * Fills an empty archive sector by sector, it's up to |
---|
| 1259 | * the user to call it the right number of times, |
---|
| 1260 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1261 | */ |
---|
| 1262 | int sap_FillArchive(sapID id, sapsector_t *sapsector) |
---|
| 1263 | { |
---|
| 1264 | static int sect; |
---|
| 1265 | |
---|
| 1266 | switch (ID_STATE(id)) { |
---|
| 1267 | |
---|
| 1268 | case NO_ARCHIVE: |
---|
| 1269 | sap_errno = SAP_EINVAL; |
---|
| 1270 | return SAP_ERROR; |
---|
| 1271 | |
---|
| 1272 | case EMPTY_ARCHIVE: |
---|
| 1273 | ID_STATE(id) = FILLED_ARCHIVE; |
---|
| 1274 | sect = 1; |
---|
| 1275 | /* no break */ |
---|
| 1276 | |
---|
| 1277 | case FILLED_ARCHIVE: |
---|
| 1278 | do_write_sector(id, sapsector); |
---|
| 1279 | |
---|
| 1280 | if (++sect == SAP_NSECTS+1) { |
---|
| 1281 | sect = 1; |
---|
| 1282 | |
---|
| 1283 | if (++ID_NTRACKS(id) == SAP_NTRACKS(ID_FORMAT(id))) |
---|
| 1284 | ID_STATE(id) = FULL_ARCHIVE; |
---|
| 1285 | } |
---|
| 1286 | break; |
---|
| 1287 | |
---|
| 1288 | case FULL_ARCHIVE: |
---|
| 1289 | sap_errno = SAP_ENOSPC; |
---|
| 1290 | return SAP_ERROR; |
---|
| 1291 | } /* end of switch */ |
---|
| 1292 | |
---|
| 1293 | return SAP_OK; |
---|
| 1294 | } |
---|
| 1295 | |
---|
| 1296 | |
---|
| 1297 | |
---|
| 1298 | /* ReadSector: |
---|
| 1299 | * Reads the specified sector and returns SAP_OK or a flagged code: |
---|
| 1300 | * SAP_NO_STD_FMT: non standard format |
---|
| 1301 | * SAP_PROTECTED : protected sector |
---|
| 1302 | * SAP_BAD_SECTOR: bad sector identifiers |
---|
| 1303 | * SAP_CRC_ERROR : CRC error |
---|
| 1304 | */ |
---|
| 1305 | int sap_ReadSector(sapID id, int track, int sect, sapsector_t *sapsector) |
---|
| 1306 | { |
---|
| 1307 | int flag = SAP_OK; |
---|
| 1308 | int format = ID_FORMAT(id); |
---|
| 1309 | |
---|
| 1310 | switch (ID_STATE(id)) { |
---|
| 1311 | |
---|
| 1312 | case NO_ARCHIVE: |
---|
| 1313 | sap_errno = SAP_EINVAL; |
---|
| 1314 | return SAP_ERROR; |
---|
| 1315 | |
---|
| 1316 | case EMPTY_ARCHIVE: |
---|
| 1317 | sap_errno = SAP_EEMPTY; |
---|
| 1318 | return SAP_ERROR; |
---|
| 1319 | |
---|
| 1320 | case FILLED_ARCHIVE: |
---|
| 1321 | sap_errno = SAP_EBUSY; |
---|
| 1322 | return SAP_ERROR; |
---|
| 1323 | |
---|
| 1324 | case FULL_ARCHIVE: |
---|
| 1325 | break; |
---|
| 1326 | } |
---|
| 1327 | |
---|
| 1328 | seek_pos(id, track, sect); |
---|
| 1329 | do_read_sector(id, sapsector); |
---|
| 1330 | |
---|
| 1331 | if (sapsector->format != 0) |
---|
| 1332 | flag |= SAP_NO_STD_FMT; |
---|
| 1333 | |
---|
| 1334 | if (sapsector->protection != 0) |
---|
| 1335 | flag |= SAP_PROTECTED; |
---|
| 1336 | |
---|
| 1337 | if ((sapsector->track != track) || (sapsector->sector != sect)) |
---|
| 1338 | flag |= SAP_BAD_SECTOR; |
---|
| 1339 | |
---|
| 1340 | do_crc(sapsector, format); |
---|
| 1341 | |
---|
| 1342 | if ((sapsector->data[SAP_SECTSIZE(format)] != ((crcpuk_temp>>8)&0xff)) |
---|
| 1343 | || (sapsector->data[SAP_SECTSIZE(format)] != (crcpuk_temp&0xff))) |
---|
| 1344 | flag |= SAP_CRC_ERROR; |
---|
| 1345 | |
---|
| 1346 | return flag; |
---|
| 1347 | } |
---|
| 1348 | |
---|
| 1349 | |
---|
| 1350 | |
---|
| 1351 | /* ReadSectorEx: |
---|
| 1352 | * Reads one or more sectors from the same track, |
---|
| 1353 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1354 | */ |
---|
| 1355 | int sap_ReadSectorEx(sapID id, int track, int sect, int nsects, unsigned char data[]) |
---|
| 1356 | { |
---|
| 1357 | sapsector_t sapsector; |
---|
| 1358 | int format = ID_FORMAT(id); |
---|
| 1359 | int i; |
---|
| 1360 | |
---|
| 1361 | switch (ID_STATE(id)) { |
---|
| 1362 | |
---|
| 1363 | case NO_ARCHIVE: |
---|
| 1364 | sap_errno = SAP_EINVAL; |
---|
| 1365 | return SAP_ERROR; |
---|
| 1366 | |
---|
| 1367 | case EMPTY_ARCHIVE: |
---|
| 1368 | sap_errno = SAP_EEMPTY; |
---|
| 1369 | return SAP_ERROR; |
---|
| 1370 | |
---|
| 1371 | case FILLED_ARCHIVE: |
---|
| 1372 | sap_errno = SAP_EBUSY; |
---|
| 1373 | return SAP_ERROR; |
---|
| 1374 | |
---|
| 1375 | case FULL_ARCHIVE: |
---|
| 1376 | break; |
---|
| 1377 | } |
---|
| 1378 | |
---|
| 1379 | seek_pos(id, track, sect); |
---|
| 1380 | |
---|
| 1381 | for (i=0; i<nsects; i++) { |
---|
| 1382 | do_read_sector(id, &sapsector); |
---|
| 1383 | memcpy(data + i*SAP_SECTSIZE(format), sapsector.data, SAP_SECTSIZE(format)); |
---|
| 1384 | } |
---|
| 1385 | |
---|
| 1386 | return SAP_OK; |
---|
| 1387 | } |
---|
| 1388 | |
---|
| 1389 | |
---|
| 1390 | |
---|
| 1391 | /* WriteSector: |
---|
| 1392 | * Writes the specified sector and |
---|
| 1393 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1394 | */ |
---|
| 1395 | int sap_WriteSector(sapID id, int track, int sect, sapsector_t *sapsector) |
---|
| 1396 | { |
---|
| 1397 | switch (ID_STATE(id)) { |
---|
| 1398 | |
---|
| 1399 | case NO_ARCHIVE: |
---|
| 1400 | sap_errno = SAP_EINVAL; |
---|
| 1401 | return SAP_ERROR; |
---|
| 1402 | |
---|
| 1403 | case EMPTY_ARCHIVE: |
---|
| 1404 | sap_errno = SAP_EEMPTY; |
---|
| 1405 | return SAP_ERROR; |
---|
| 1406 | |
---|
| 1407 | case FILLED_ARCHIVE: |
---|
| 1408 | sap_errno = SAP_EBUSY; |
---|
| 1409 | return SAP_ERROR; |
---|
| 1410 | |
---|
| 1411 | case FULL_ARCHIVE: |
---|
| 1412 | break; |
---|
| 1413 | } |
---|
| 1414 | |
---|
| 1415 | seek_pos(id, track, sect); |
---|
| 1416 | do_write_sector(id, sapsector); |
---|
| 1417 | |
---|
| 1418 | return SAP_OK; |
---|
| 1419 | } |
---|
| 1420 | |
---|
| 1421 | |
---|
| 1422 | |
---|
| 1423 | /* WriteSectorEx: |
---|
| 1424 | * Writes one or more sectors into the same track, |
---|
| 1425 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1426 | */ |
---|
| 1427 | int sap_WriteSectorEx(sapID id, int track, int sect, int nsects, const unsigned char data[]) |
---|
| 1428 | { |
---|
| 1429 | sapsector_t sapsector; |
---|
| 1430 | int format = ID_FORMAT(id); |
---|
| 1431 | int i; |
---|
| 1432 | |
---|
| 1433 | switch (ID_STATE(id)) { |
---|
| 1434 | |
---|
| 1435 | case NO_ARCHIVE: |
---|
| 1436 | sap_errno = SAP_EINVAL; |
---|
| 1437 | return SAP_ERROR; |
---|
| 1438 | |
---|
| 1439 | case EMPTY_ARCHIVE: |
---|
| 1440 | sap_errno = SAP_EEMPTY; |
---|
| 1441 | return SAP_ERROR; |
---|
| 1442 | |
---|
| 1443 | case FILLED_ARCHIVE: |
---|
| 1444 | sap_errno = SAP_EBUSY; |
---|
| 1445 | return SAP_ERROR; |
---|
| 1446 | |
---|
| 1447 | case FULL_ARCHIVE: |
---|
| 1448 | break; |
---|
| 1449 | } |
---|
| 1450 | |
---|
| 1451 | seek_pos(id, track, sect); |
---|
| 1452 | |
---|
| 1453 | sapsector.format = 0; |
---|
| 1454 | sapsector.protection = 0; |
---|
| 1455 | sapsector.track = track; |
---|
| 1456 | |
---|
| 1457 | for (i=0; i<nsects; i++) { |
---|
| 1458 | memcpy(sapsector.data, data + i*SAP_SECTSIZE(format), SAP_SECTSIZE(format)); |
---|
| 1459 | sapsector.sector = sect + i; |
---|
| 1460 | do_write_sector(id, &sapsector); |
---|
| 1461 | } |
---|
| 1462 | |
---|
| 1463 | return SAP_OK; |
---|
| 1464 | } |
---|
| 1465 | |
---|
| 1466 | |
---|
| 1467 | |
---|
| 1468 | /************************************************/ |
---|
| 1469 | /*** API functions: logical format support ***/ |
---|
| 1470 | /************************************************/ |
---|
| 1471 | |
---|
| 1472 | |
---|
| 1473 | /* FormatArchive: |
---|
| 1474 | * Formats an archive using the Thomson BASIC DOS format, |
---|
| 1475 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1476 | */ |
---|
| 1477 | int sap_FormatArchive(sapID id, int capacity) |
---|
| 1478 | { |
---|
| 1479 | int format = ID_FORMAT(id); |
---|
| 1480 | int track, sect; |
---|
| 1481 | |
---|
| 1482 | sapsector_t sapsector; |
---|
| 1483 | |
---|
| 1484 | switch (ID_STATE(id)) { |
---|
| 1485 | |
---|
| 1486 | case NO_ARCHIVE: |
---|
| 1487 | sap_errno = SAP_EINVAL; |
---|
| 1488 | return SAP_ERROR; |
---|
| 1489 | |
---|
| 1490 | case EMPTY_ARCHIVE: |
---|
| 1491 | break; |
---|
| 1492 | |
---|
| 1493 | case FILLED_ARCHIVE: |
---|
| 1494 | sap_errno = SAP_EBUSY; |
---|
| 1495 | return SAP_ERROR; |
---|
| 1496 | |
---|
| 1497 | case FULL_ARCHIVE: |
---|
| 1498 | seek_pos(id, 0, 1); |
---|
| 1499 | break; |
---|
| 1500 | } |
---|
| 1501 | |
---|
| 1502 | if (!(capacity == SAP_TRK40) && !(capacity == SAP_TRK80)) { |
---|
| 1503 | sap_errno = SAP_EINVAL; |
---|
| 1504 | return SAP_ERROR; |
---|
| 1505 | } |
---|
| 1506 | |
---|
| 1507 | sapsector.format = 0; |
---|
| 1508 | sapsector.protection = 0; |
---|
| 1509 | memset(sapsector.data, TO_FILLER_BYTE, SAP_SECTSIZE(format)); |
---|
| 1510 | |
---|
| 1511 | for (track=0; track<SAP_NTRACKS(format); track++) { |
---|
| 1512 | for (sect=1; sect<SAP_NSECTS+1; sect++) { |
---|
| 1513 | sapsector.track = track; |
---|
| 1514 | sapsector.sector = sect; |
---|
| 1515 | do_write_sector(id, &sapsector); |
---|
| 1516 | } |
---|
| 1517 | } |
---|
| 1518 | |
---|
| 1519 | /* write track 20 */ |
---|
| 1520 | sapsector.track = 20; |
---|
| 1521 | memset(sapsector.data, TO_TAG_FREE, SAP_SECTSIZE(format)); |
---|
| 1522 | seek_pos(id, 20, 1); |
---|
| 1523 | |
---|
| 1524 | for (sect=1; sect<SAP_NSECTS+1; sect++) { |
---|
| 1525 | sapsector.sector = sect; |
---|
| 1526 | do_write_sector(id, &sapsector); |
---|
| 1527 | } |
---|
| 1528 | |
---|
| 1529 | /* FAT */ |
---|
| 1530 | sapsector.track = 20; |
---|
| 1531 | sapsector.sector = 2; |
---|
| 1532 | memset(sapsector.data, TO_TAG_RESERVED, SAP_SECTSIZE(format)); |
---|
| 1533 | |
---|
| 1534 | /* first byte */ |
---|
| 1535 | sapsector.data[0] = 0; |
---|
| 1536 | |
---|
| 1537 | /* lower zone */ |
---|
| 1538 | memset(sapsector.data + 1, TO_TAG_FREE, 40); |
---|
| 1539 | |
---|
| 1540 | /* upper zone */ |
---|
| 1541 | if (capacity == SAP_TRK80) /* not (format == SAP_FORMAT1) */ |
---|
| 1542 | memset(sapsector.data + 43, TO_TAG_FREE, TO_NBLOCKS1 - 43 + 1); |
---|
| 1543 | else |
---|
| 1544 | memset(sapsector.data + 43, TO_TAG_FREE, TO_NBLOCKS2 - 43 + 1); |
---|
| 1545 | |
---|
| 1546 | seek_pos(id, 20, 2); |
---|
| 1547 | do_write_sector(id, &sapsector); |
---|
| 1548 | |
---|
| 1549 | ID_STATE(id) = FULL_ARCHIVE; |
---|
| 1550 | ID_NTRACKS(id) = SAP_NTRACKS(format); |
---|
| 1551 | |
---|
| 1552 | return SAP_OK; |
---|
| 1553 | } |
---|
| 1554 | |
---|
| 1555 | |
---|
| 1556 | |
---|
| 1557 | /* ListArchive: |
---|
| 1558 | * Builds a list of files contained in the archive, |
---|
| 1559 | * returns the number of lines on success or 0 on error. |
---|
| 1560 | */ |
---|
| 1561 | int sap_ListArchive(sapID id, char buffer[], int buffer_size) |
---|
| 1562 | { |
---|
| 1563 | unsigned char trk20_data[SAP_TRACKSIZE1]; |
---|
| 1564 | |
---|
| 1565 | switch (ID_STATE(id)) { |
---|
| 1566 | |
---|
| 1567 | case NO_ARCHIVE: |
---|
| 1568 | sap_errno = SAP_EINVAL; |
---|
| 1569 | return 0; |
---|
| 1570 | |
---|
| 1571 | case EMPTY_ARCHIVE: |
---|
| 1572 | sap_errno = SAP_EEMPTY; |
---|
| 1573 | return 0; |
---|
| 1574 | |
---|
| 1575 | case FILLED_ARCHIVE: |
---|
| 1576 | sap_errno = SAP_EBUSY; |
---|
| 1577 | return 0; |
---|
| 1578 | |
---|
| 1579 | case FULL_ARCHIVE: |
---|
| 1580 | break; |
---|
| 1581 | } |
---|
| 1582 | |
---|
| 1583 | /* read track 20 */ |
---|
| 1584 | sap_ReadSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1585 | |
---|
| 1586 | return _ExtractDir(buffer, buffer_size, 0, ID_FORMAT(id) == SAP_FORMAT1 ? 2 : 1, trk20_data); |
---|
| 1587 | } |
---|
| 1588 | |
---|
| 1589 | |
---|
| 1590 | |
---|
| 1591 | /* AddFile: |
---|
| 1592 | * Adds the specified file to the archive, |
---|
| 1593 | * returns the size of the file in bytes on success or 0 on error. |
---|
| 1594 | */ |
---|
| 1595 | int sap_AddFile(sapID id, const char filename[]) |
---|
| 1596 | { |
---|
| 1597 | unsigned char entry_data[TO_DIRENTRY_LENGTH]; |
---|
| 1598 | unsigned char trk20_data[SAP_TRACKSIZE1], *fat_data, *dir_data; |
---|
| 1599 | int free_n=-1, prev_n=-1; |
---|
| 1600 | int i, dskf, file_size = 0; |
---|
| 1601 | FILE *file; |
---|
| 1602 | |
---|
| 1603 | switch (ID_STATE(id)) { |
---|
| 1604 | |
---|
| 1605 | case NO_ARCHIVE: |
---|
| 1606 | sap_errno = SAP_EINVAL; |
---|
| 1607 | return 0; |
---|
| 1608 | |
---|
| 1609 | case EMPTY_ARCHIVE: |
---|
| 1610 | sap_errno = SAP_EBUSY; |
---|
| 1611 | return 0; |
---|
| 1612 | |
---|
| 1613 | case FILLED_ARCHIVE: |
---|
| 1614 | sap_errno = SAP_EBUSY; |
---|
| 1615 | return 0; |
---|
| 1616 | |
---|
| 1617 | case FULL_ARCHIVE: |
---|
| 1618 | break; |
---|
| 1619 | } |
---|
| 1620 | |
---|
| 1621 | /* open the file */ |
---|
| 1622 | if ((file=fopen(filename, "rb")) == NULL) { |
---|
| 1623 | sap_errno = SAP_ENOENT; |
---|
| 1624 | return 0; |
---|
| 1625 | } |
---|
| 1626 | |
---|
| 1627 | /* find size of the file */ |
---|
| 1628 | while (fgetc(file) != EOF) |
---|
| 1629 | file_size++; |
---|
| 1630 | |
---|
| 1631 | if (file_size == 0) { |
---|
| 1632 | fclose(file); |
---|
| 1633 | sap_errno = SAP_ENFILE; |
---|
| 1634 | return 0; |
---|
| 1635 | } |
---|
| 1636 | |
---|
| 1637 | fseek(file, 0, SEEK_SET); |
---|
| 1638 | |
---|
| 1639 | /* decode the filename */ |
---|
| 1640 | decode_filename(entry_data, filename, file_size); |
---|
| 1641 | |
---|
| 1642 | /* read track 20 */ |
---|
| 1643 | sap_ReadSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1644 | |
---|
| 1645 | fat_data = trk20_data + TO_FAT_START(ID_FORMAT(id)); |
---|
| 1646 | dir_data = trk20_data + TO_DIR_START(ID_FORMAT(id)); |
---|
| 1647 | |
---|
| 1648 | /* simultaneously seek already free entry and previous entry */ |
---|
| 1649 | for (i=0; i<TO_NDIRENTRIES(ID_FORMAT(id)); i++) { |
---|
| 1650 | if ((dir_data[i*TO_DIRENTRY_LENGTH] == 0) || (dir_data[i*TO_DIRENTRY_LENGTH] == TO_TAG_FREE)) { |
---|
| 1651 | if (free_n<0) |
---|
| 1652 | free_n = i; |
---|
| 1653 | } |
---|
| 1654 | else { |
---|
| 1655 | if (strncmp((char*)(dir_data+i*TO_DIRENTRY_LENGTH),(char*) entry_data, TO_NAME_LENGTH + TO_EXT_LENGTH) == 0) { |
---|
| 1656 | prev_n = i; |
---|
| 1657 | break; |
---|
| 1658 | } |
---|
| 1659 | } |
---|
| 1660 | } |
---|
| 1661 | |
---|
| 1662 | if ((free_n<0) && (prev_n<0)) { |
---|
| 1663 | fclose(file); |
---|
| 1664 | sap_errno = SAP_ENOSPC; |
---|
| 1665 | return 0; |
---|
| 1666 | } |
---|
| 1667 | |
---|
| 1668 | /* test for enough free disk space */ |
---|
| 1669 | dskf = get_dskf(ID_FORMAT(id), trk20_data); |
---|
| 1670 | |
---|
| 1671 | if (prev_n >=0) |
---|
| 1672 | dskf += get_file_size(ID_FORMAT(id), prev_n, trk20_data); |
---|
| 1673 | |
---|
| 1674 | if ((dskf*TO_BLOCKSIZE(ID_FORMAT(id))) < file_size) { |
---|
| 1675 | sap_errno = SAP_EFBIG; |
---|
| 1676 | fclose(file); |
---|
| 1677 | return 0; |
---|
| 1678 | } |
---|
| 1679 | |
---|
| 1680 | /* delete previous entry */ |
---|
| 1681 | if (prev_n >= 0) { |
---|
| 1682 | do_delete_file(id, filename, prev_n, trk20_data); |
---|
| 1683 | free_n = prev_n; |
---|
| 1684 | } |
---|
| 1685 | |
---|
| 1686 | /* phew! we can finally add the file... */ |
---|
| 1687 | do_add_file(id, file, file_size, entry_data, free_n, trk20_data); |
---|
| 1688 | |
---|
| 1689 | /* update directory and FAT */ |
---|
| 1690 | sap_WriteSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1691 | |
---|
| 1692 | fclose(file); |
---|
| 1693 | |
---|
| 1694 | return file_size; |
---|
| 1695 | } |
---|
| 1696 | |
---|
| 1697 | |
---|
| 1698 | |
---|
| 1699 | /* DeleteFile: |
---|
| 1700 | * Deletes the specified files from the archive, |
---|
| 1701 | * returns the total size of the files in bytes on success or 0 on error. |
---|
| 1702 | */ |
---|
| 1703 | int sap_DeleteFile(sapID id, const char pattern[]) |
---|
| 1704 | { |
---|
| 1705 | return _ForEachFile(id, pattern, do_delete_file, 1); |
---|
| 1706 | } |
---|
| 1707 | |
---|
| 1708 | |
---|
| 1709 | |
---|
| 1710 | /* ExtractFile: |
---|
| 1711 | * Extracts the specified files from the archive, |
---|
| 1712 | * returns the total size of the files in bytes on success or 0 on error. |
---|
| 1713 | */ |
---|
| 1714 | int sap_ExtractFile(sapID id, const char pattern[]) |
---|
| 1715 | { |
---|
| 1716 | return _ForEachFile(id, pattern, do_extract_file, 0); |
---|
| 1717 | } |
---|
| 1718 | |
---|
| 1719 | |
---|
| 1720 | |
---|
| 1721 | /* GetFileInfo: |
---|
| 1722 | * Fills in a structure with the info for the specified file |
---|
| 1723 | * returns SAP_OK on success or SAP_ERROR on error. |
---|
| 1724 | */ |
---|
| 1725 | int sap_GetFileInfo(sapID id, const char filename[], sapfileinfo_t *info) |
---|
| 1726 | { |
---|
| 1727 | unsigned char trk20_data[SAP_TRACKSIZE1], *dir_data, *fat_data, *entry_data; |
---|
| 1728 | struct tm tim; |
---|
| 1729 | int n, block, i=0; |
---|
| 1730 | |
---|
| 1731 | switch (ID_STATE(id)) { |
---|
| 1732 | |
---|
| 1733 | case NO_ARCHIVE: |
---|
| 1734 | sap_errno = SAP_EINVAL; |
---|
| 1735 | return 0; |
---|
| 1736 | |
---|
| 1737 | case EMPTY_ARCHIVE: |
---|
| 1738 | sap_errno = SAP_EEMPTY; |
---|
| 1739 | return 0; |
---|
| 1740 | |
---|
| 1741 | case FILLED_ARCHIVE: |
---|
| 1742 | sap_errno = SAP_EBUSY; |
---|
| 1743 | return 0; |
---|
| 1744 | |
---|
| 1745 | case FULL_ARCHIVE: |
---|
| 1746 | break; |
---|
| 1747 | } |
---|
| 1748 | |
---|
| 1749 | /* read track 20 */ |
---|
| 1750 | sap_ReadSectorEx(id, 20, 1, SAP_NSECTS, trk20_data); |
---|
| 1751 | |
---|
| 1752 | dir_data = trk20_data + TO_DIR_START(ID_FORMAT(id)); |
---|
| 1753 | |
---|
| 1754 | n = seek_file(ID_FORMAT(id), filename, dir_data); |
---|
| 1755 | |
---|
| 1756 | if (n<0) { |
---|
| 1757 | sap_errno = SAP_ENOENT; |
---|
| 1758 | return SAP_ERROR; |
---|
| 1759 | } |
---|
| 1760 | |
---|
| 1761 | fat_data = trk20_data + TO_FAT_START(ID_FORMAT(id)); |
---|
| 1762 | entry_data = trk20_data + TO_DIR_START(ID_FORMAT(id)) + n*TO_DIRENTRY_LENGTH; |
---|
| 1763 | |
---|
| 1764 | /* block chain */ |
---|
| 1765 | info->nblocks = get_file_size(ID_FORMAT(id), n, trk20_data); |
---|
| 1766 | info->block = malloc(info->nblocks*sizeof(int)); |
---|
| 1767 | |
---|
| 1768 | block = entry_data[TO_FIRST_BLOCK]; |
---|
| 1769 | |
---|
| 1770 | while ((block<TO_NBLOCKS(ID_FORMAT(id))) && (i<TO_FILESIZE_MAX(ID_FORMAT(id)))) { |
---|
| 1771 | info->block[i++] = block; |
---|
| 1772 | block = fat_data[block]; |
---|
| 1773 | } |
---|
| 1774 | |
---|
| 1775 | /* common attributes */ |
---|
| 1776 | info->size = info->nblocks*TO_BLOCKSIZE(ID_FORMAT(id)) + entry_data[TO_END_SIZE]; |
---|
| 1777 | info->file_type = entry_data[TO_FILE_TYPE]; |
---|
| 1778 | info->data_type = entry_data[TO_DATA_TYPE]; |
---|
| 1779 | |
---|
| 1780 | /* date */ |
---|
| 1781 | if ((entry_data[TO_DATE_DAY] >= 1) && (entry_data[TO_DATE_DAY] <= 31) && |
---|
| 1782 | (entry_data[TO_DATE_MONTH] >= 1) && (entry_data[TO_DATE_MONTH] <= 12) && |
---|
| 1783 | (entry_data[TO_DATE_YEAR] <= 99)) { |
---|
| 1784 | memset(&tim, 0, sizeof(struct tm)); |
---|
| 1785 | tim.tm_mday = entry_data[TO_DATE_DAY]; |
---|
| 1786 | tim.tm_mon = entry_data[TO_DATE_MONTH]; |
---|
| 1787 | tim.tm_year = entry_data[TO_DATE_YEAR]; |
---|
| 1788 | info->date = mktime(&tim); |
---|
| 1789 | } |
---|
| 1790 | else { |
---|
| 1791 | info->date = 0; |
---|
| 1792 | } |
---|
| 1793 | |
---|
| 1794 | /* comment */ |
---|
| 1795 | info->comment[0] = '\0'; |
---|
| 1796 | if (entry_data[TO_COMMENT]) |
---|
| 1797 | strncat(info->comment,(char*)( entry_data+TO_COMMENT), TO_COMMENT_LENGTH); |
---|
| 1798 | |
---|
| 1799 | return SAP_OK; |
---|
| 1800 | } |
---|
| 1801 | |
---|