| 1 | /* |
| 2 | * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License version 2 as published |
| 6 | * by the Free Software Foundation. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #include <stdio.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <stdint.h> |
| 13 | #include <string.h> |
| 14 | #include <unistd.h> /* for unlink() */ |
| 15 | #include <libgen.h> |
| 16 | #include <getopt.h> /* for getopt() */ |
| 17 | #include <stdarg.h> |
| 18 | #include <errno.h> |
| 19 | #include <sys/stat.h> |
| 20 | |
| 21 | #define DNI_HDR_LEN 128 |
| 22 | |
| 23 | /* |
| 24 | * Globals |
| 25 | */ |
| 26 | static char *ifname; |
| 27 | static char *progname; |
| 28 | static char *ofname; |
| 29 | static char *version = "1.00.00"; |
| 30 | static char *region ="NA"; |
| 31 | |
| 32 | static char *board_id; |
| 33 | /* |
| 34 | * Message macros |
| 35 | */ |
| 36 | #define ERR(fmt, ...) do { \ |
| 37 | fflush(0); \ |
| 38 | fprintf(stderr, "[%s] *** error: " fmt "\n", \ |
| 39 | progname, ## __VA_ARGS__ ); \ |
| 40 | } while (0) |
| 41 | |
| 42 | #define ERRS(fmt, ...) do { \ |
| 43 | int save = errno; \ |
| 44 | fflush(0); \ |
| 45 | fprintf(stderr, "[%s] *** error: " fmt "\n", \ |
| 46 | progname, ## __VA_ARGS__, strerror(save)); \ |
| 47 | } while (0) |
| 48 | |
| 49 | void usage(int status) |
| 50 | { |
| 51 | FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout; |
| 52 | struct board_info *board; |
| 53 | |
| 54 | fprintf(stream, "Usage: %s [OPTIONS...]\n", progname); |
| 55 | fprintf(stream, |
| 56 | "\n" |
| 57 | "Options:\n" |
| 58 | " -B <board> create image for the board specified with <board>\n" |
| 59 | " -i <file> read input from the file <file>\n" |
| 60 | " -o <file> write output to the file <file>\n" |
| 61 | " -v <version> set image version to <version>\n" |
| 62 | " -r <region> set image region to <region>\n" |
| 63 | " -h show this screen\n" |
| 64 | ); |
| 65 | |
| 66 | exit(status); |
| 67 | } |
| 68 | |
| 69 | int main(int argc, char *argv[]) |
| 70 | { |
| 71 | int res = EXIT_FAILURE; |
| 72 | int buflen; |
| 73 | int err; |
| 74 | struct stat st; |
| 75 | char *buf; |
| 76 | int i; |
| 77 | uint8_t csum; |
| 78 | |
| 79 | FILE *outfile, *infile; |
| 80 | |
| 81 | progname = basename(argv[0]); |
| 82 | |
| 83 | while ( 1 ) { |
| 84 | int c; |
| 85 | |
| 86 | c = getopt(argc, argv, "B:i:o:v:r:h"); |
| 87 | if (c == -1) |
| 88 | break; |
| 89 | |
| 90 | switch (c) { |
| 91 | case 'B': |
| 92 | board_id = optarg; |
| 93 | break; |
| 94 | case 'i': |
| 95 | ifname = optarg; |
| 96 | break; |
| 97 | case 'o': |
| 98 | ofname = optarg; |
| 99 | break; |
| 100 | case 'v': |
| 101 | version = optarg; |
| 102 | break; |
| 103 | case 'r': |
| 104 | region = optarg; |
| 105 | break; |
| 106 | case 'h': |
| 107 | usage(EXIT_SUCCESS); |
| 108 | break; |
| 109 | default: |
| 110 | usage(EXIT_FAILURE); |
| 111 | break; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | if (board_id == NULL) { |
| 116 | ERR("no board specified"); |
| 117 | goto err; |
| 118 | } |
| 119 | |
| 120 | if (ifname == NULL) { |
| 121 | ERR("no input file specified"); |
| 122 | goto err; |
| 123 | } |
| 124 | |
| 125 | if (ofname == NULL) { |
| 126 | ERR("no output file specified"); |
| 127 | goto err; |
| 128 | } |
| 129 | |
| 130 | err = stat(ifname, &st); |
| 131 | if (err){ |
| 132 | ERRS("stat failed on %s", ifname); |
| 133 | goto err; |
| 134 | } |
| 135 | |
| 136 | buflen = st.st_size + DNI_HDR_LEN + 1; |
| 137 | buf = malloc(buflen); |
| 138 | if (!buf) { |
| 139 | ERR("no memory for buffer\n"); |
| 140 | goto err; |
| 141 | } |
| 142 | |
| 143 | memset(buf, 0, DNI_HDR_LEN); |
| 144 | snprintf(buf, DNI_HDR_LEN, "device:%s\nversion:V%s\nregion:%s\n", |
| 145 | board_id, version, region); |
| 146 | |
| 147 | infile = fopen(ifname, "r"); |
| 148 | if (infile == NULL) { |
| 149 | ERRS("could not open \"%s\" for reading", ifname); |
| 150 | goto err_free; |
| 151 | } |
| 152 | |
| 153 | errno = 0; |
| 154 | fread(buf + DNI_HDR_LEN, st.st_size, 1, infile); |
| 155 | if (errno != 0) { |
| 156 | ERRS("unable to read from file %s", ifname); |
| 157 | goto err_close_in; |
| 158 | } |
| 159 | |
| 160 | csum = 0; |
| 161 | for (i = 0; i < (st.st_size + DNI_HDR_LEN); i++) |
| 162 | csum += buf[i]; |
| 163 | |
| 164 | csum = 0xff - csum; |
| 165 | buf[st.st_size + DNI_HDR_LEN] = csum; |
| 166 | |
| 167 | outfile = fopen(ofname, "w"); |
| 168 | if (outfile == NULL) { |
| 169 | ERRS("could not open \"%s\" for writing", ofname); |
| 170 | goto err_close_in; |
| 171 | } |
| 172 | |
| 173 | errno = 0; |
| 174 | fwrite(buf, buflen, 1, outfile); |
| 175 | if (errno) { |
| 176 | ERRS("unable to write to file %s", ofname); |
| 177 | goto err_close_out; |
| 178 | } |
| 179 | |
| 180 | res = EXIT_SUCCESS; |
| 181 | |
| 182 | out_flush: |
| 183 | fflush(outfile); |
| 184 | |
| 185 | err_close_out: |
| 186 | fclose(outfile); |
| 187 | if (res != EXIT_SUCCESS) { |
| 188 | unlink(ofname); |
| 189 | } |
| 190 | |
| 191 | err_close_in: |
| 192 | fclose(infile); |
| 193 | |
| 194 | err_free: |
| 195 | free(buf); |
| 196 | |
| 197 | err: |
| 198 | return res; |
| 199 | } |
| 200 | |
