| 1 | /* $Id: bin2c.c 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * bin2c - Binary 2 C Structure Converter.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 |
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| 29 | /*********************************************************************************************************************************
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| 30 | * Header Files *
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| 31 | *********************************************************************************************************************************/
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| 32 | #include <ctype.h>
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| 33 | #include <stdio.h>
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| 34 | #include <string.h>
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| 35 | #include <stdlib.h>
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| 36 | #include <sys/types.h>
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| 37 |
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| 38 |
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| 39 | /**
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| 40 | * File size.
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| 41 | *
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| 42 | * @returns file size in bytes.
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| 43 | * @returns 0 on failure.
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| 44 | * @param pFile File to size.
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| 45 | */
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| 46 | static size_t fsize(FILE *pFile)
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| 47 | {
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| 48 | long cbFile;
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| 49 | off_t Pos = ftell(pFile);
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| 50 | if ( Pos >= 0
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| 51 | && !fseek(pFile, 0, SEEK_END))
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| 52 | {
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| 53 | cbFile = ftell(pFile);
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| 54 | if ( cbFile >= 0
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| 55 | && !fseek(pFile, 0, SEEK_SET))
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| 56 | return cbFile;
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| 57 | }
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| 58 | return 0;
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| 59 | }
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| 60 |
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| 61 | static int usage(const char *argv0)
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| 62 | {
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| 63 | fprintf(stderr,
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| 64 | "Syntax: %s [options] <arrayname> <binaryfile> <outname>\n"
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| 65 | " --min <n> check if <binaryfile> is not smaller than <n>KB\n"
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| 66 | " --max <n> check if <binaryfile> is not bigger than <n>KB\n"
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| 67 | " --mask <n> check if size of binaryfile is <n>-aligned\n"
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| 68 | " --width <n> number of bytes per line (default: 16)\n"
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| 69 | " --break <n> break every <n> lines (default: -1)\n"
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| 70 | , argv0);
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| 71 | fprintf(stderr,
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| 72 | " --ascii show ASCII representation of binary as comment\n"
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| 73 | " --export emit DECLEXPORT\n"
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| 74 | " --append append to the output file (default: truncate)\n"
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| 75 | " --no-size Skip the size.\n"
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| 76 | " --static Static data scope.\n");
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| 77 |
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| 78 | return 1;
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| 79 | }
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| 80 |
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| 81 | int main(int argc, char *argv[])
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| 82 | {
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| 83 | FILE *pFileIn;
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| 84 | FILE *pFileOut;
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| 85 | int iArg;
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| 86 | size_t cbMin = 0;
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| 87 | size_t cbMax = ~0U;
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| 88 | size_t uMask = 0;
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| 89 | int fAscii = 0;
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| 90 | int fAppend = 0;
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| 91 | int fExport = 0;
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| 92 | int fNoSize = 0;
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| 93 | int fStatic = 0;
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| 94 | long iBreakEvery = -1;
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| 95 | unsigned char abLine[32];
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| 96 | size_t cbLine = 16;
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| 97 | size_t off;
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| 98 | size_t cbRead;
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| 99 | size_t cbBin;
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| 100 | int rc = 1; /* assume the worst... */
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| 101 |
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| 102 | if (argc < 2)
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| 103 | return usage(argv[0]);
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| 104 |
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| 105 | for (iArg = 1; iArg < argc; iArg++)
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| 106 | {
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| 107 | if (!strcmp(argv[iArg], "--min") || !strcmp(argv[iArg], "-min"))
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| 108 | {
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| 109 | if (++iArg >= argc)
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| 110 | return usage(argv[0]);
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| 111 | cbMin = 1024 * strtoul(argv[iArg], NULL, 0);
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| 112 | }
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| 113 | else if (!strcmp(argv[iArg], "--max") || !strcmp(argv[iArg], "-max"))
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| 114 | {
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| 115 | if (++iArg >= argc)
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| 116 | return usage(argv[0]);
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| 117 | cbMax = 1024 * strtoul(argv[iArg], NULL, 0);
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| 118 | }
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| 119 | else if (!strcmp(argv[iArg], "--mask") || !strcmp(argv[iArg], "-mask"))
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| 120 | {
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| 121 | if (++iArg >= argc)
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| 122 | return usage(argv[0]);
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| 123 | uMask = strtoul(argv[iArg], NULL, 0);
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| 124 | }
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| 125 | else if (!strcmp(argv[iArg], "--ascii") || !strcmp(argv[iArg], "-ascii"))
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| 126 | fAscii = 1;
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| 127 | else if (!strcmp(argv[iArg], "--append"))
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| 128 | fAppend = 1;
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| 129 | else if (!strcmp(argv[iArg], "--export") || !strcmp(argv[iArg], "-export"))
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| 130 | fExport = 1;
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| 131 | else if (!strcmp(argv[iArg], "--no-size"))
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| 132 | fNoSize = 1;
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| 133 | else if (!strcmp(argv[iArg], "--static"))
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| 134 | fStatic = 1;
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| 135 | else if (!strcmp(argv[iArg], "--width") || !strcmp(argv[iArg], "-width"))
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| 136 | {
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| 137 | if (++iArg >= argc)
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| 138 | return usage(argv[0]);
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| 139 | cbLine = strtoul(argv[iArg], NULL, 0);
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| 140 | if (cbLine == 0 || cbLine > sizeof(abLine))
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| 141 | {
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| 142 | fprintf(stderr, "%s: '%s' is too wide, max %u\n",
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| 143 | argv[0], argv[iArg], (unsigned)sizeof(abLine));
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| 144 | return 1;
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| 145 | }
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| 146 | }
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| 147 | else if (!strcmp(argv[iArg], "--break") || !strcmp(argv[iArg], "-break"))
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| 148 | {
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| 149 | if (++iArg >= argc)
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| 150 | return usage(argv[0]);
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| 151 | iBreakEvery = strtol(argv[iArg], NULL, 0);
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| 152 | if (iBreakEvery <= 0 && iBreakEvery != -1)
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| 153 | {
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| 154 | fprintf(stderr, "%s: -break value '%s' is not >= 1 or -1.\n",
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| 155 | argv[0], argv[iArg]);
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| 156 | return 1;
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| 157 | }
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| 158 | }
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| 159 | else if (iArg == argc - 3)
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| 160 | break;
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| 161 | else
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| 162 | {
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| 163 | fprintf(stderr, "%s: syntax error: Unknown argument '%s'\n",
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| 164 | argv[0], argv[iArg]);
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| 165 | return usage(argv[0]);
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| 166 | }
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| 167 | }
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| 168 |
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| 169 | pFileIn = fopen(argv[iArg+1], "rb");
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| 170 | if (!pFileIn)
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| 171 | {
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| 172 | fprintf(stderr, "Error: failed to open input file '%s'!\n", argv[iArg+1]);
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| 173 | return 1;
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| 174 | }
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| 175 |
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| 176 | pFileOut = fopen(argv[iArg+2], fAppend ? "a" : "w"); /* no b! */
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| 177 | if (!pFileOut)
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| 178 | {
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| 179 | fprintf(stderr, "Error: failed to open output file '%s'!\n", argv[iArg+2]);
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| 180 | fclose(pFileIn);
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| 181 | return 1;
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| 182 | }
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| 183 |
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| 184 | cbBin = fsize(pFileIn);
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| 185 |
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| 186 | fprintf(pFileOut,
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| 187 | "/*\n"
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| 188 | " * This file was automatically generated\n"
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| 189 | " * from %s\n"
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| 190 | " * by %s.\n"
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| 191 | " */\n"
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| 192 | "\n"
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| 193 | "#include <iprt/cdefs.h>\n"
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| 194 | "\n"
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| 195 | "%sconst unsigned char%s g_ab%s[] =\n"
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| 196 | "{\n",
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| 197 | argv[iArg+1], argv[0], fStatic ? "static " : fExport ? "DECLEXPORT(" : "", !fStatic && fExport ? ")" : "", argv[iArg]);
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| 198 |
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| 199 | /* check size restrictions */
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| 200 | if (uMask && (cbBin & uMask))
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| 201 | fprintf(stderr, "%s: size=%ld - Not aligned!\n", argv[0], (long)cbBin);
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| 202 | else if (cbBin < cbMin || cbBin > cbMax)
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| 203 | fprintf(stderr, "%s: size=%ld - Not %ld-%ldb in size!\n",
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| 204 | argv[0], (long)cbBin, (long)cbMin, (long)cbMax);
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| 205 | else
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| 206 | {
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| 207 | /* the binary data */
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| 208 | off = 0;
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| 209 | while ((cbRead = fread(&abLine[0], 1, cbLine, pFileIn)) > 0)
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| 210 | {
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| 211 | size_t j;
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| 212 |
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| 213 | if ( iBreakEvery > 0
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| 214 | && off
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| 215 | && (off / cbLine) % iBreakEvery == 0)
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| 216 | fprintf(pFileOut, "\n");
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| 217 |
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| 218 | fprintf(pFileOut, " ");
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| 219 | for (j = 0; j < cbRead; j++)
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| 220 | fprintf(pFileOut, " 0x%02x,", abLine[j]);
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| 221 | for (; j < cbLine; j++)
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| 222 | fprintf(pFileOut, " ");
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| 223 | if (fAscii)
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| 224 | {
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| 225 | fprintf(pFileOut, " /* 0x%08lx: ", (long)off);
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| 226 | for (j = 0; j < cbRead; j++)
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| 227 | /* be careful with '/' prefixed/followed by a '*'! */
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| 228 | fprintf(pFileOut, "%c",
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| 229 | isprint(abLine[j]) && abLine[j] != '/' ? abLine[j] : '.');
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| 230 | for (; j < cbLine; j++)
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| 231 | fprintf(pFileOut, " ");
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| 232 | fprintf(pFileOut, " */");
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| 233 | }
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| 234 | fprintf(pFileOut, "\n");
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| 235 |
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| 236 | off += cbRead;
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| 237 | }
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| 238 |
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| 239 | /* check for errors */
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| 240 | if (ferror(pFileIn) && !feof(pFileIn))
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| 241 | fprintf(stderr, "%s: read error\n", argv[0]);
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| 242 | else if (off != cbBin)
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| 243 | fprintf(stderr, "%s: read error off=%ld cbBin=%ld\n", argv[0], (long)off, (long)cbBin);
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| 244 | else
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| 245 | {
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| 246 | /* no errors, finish the structure. */
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| 247 | fprintf(pFileOut,
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| 248 | "};\n");
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| 249 |
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| 250 | if (!fNoSize)
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| 251 | fprintf(pFileOut,
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| 252 | "\n"
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| 253 | "%sconst unsigned%s g_cb%s = sizeof(g_ab%s);\n",
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| 254 | fExport ? "DECLEXPORT(" : "", fExport ? ")" : "", argv[iArg], argv[iArg]);
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| 255 |
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| 256 | fprintf(pFileOut, "/* end of file */\n");
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| 257 |
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| 258 | /* flush output and check for error. */
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| 259 | fflush(pFileOut);
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| 260 | if (ferror(pFileOut))
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| 261 | fprintf(stderr, "%s: write error\n", argv[0]);
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| 262 | else
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| 263 | rc = 0; /* success! */
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | /* cleanup, delete the output file on failure. */
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| 268 | fclose(pFileOut);
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| 269 | fclose(pFileIn);
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| 270 | if (rc)
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| 271 | remove(argv[iArg+2]);
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| 272 |
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| 273 | return rc;
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| 274 | }
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