OpenWrt – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | #include <stdio.h> |
2 | #include <stdlib.h> |
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3 | #include <stddef.h> |
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4 | #include <stdint.h> |
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5 | #include <string.h> |
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6 | #include <errno.h> |
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7 | #include <unistd.h> |
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8 | |||
9 | #if __BYTE_ORDER == __BIG_ENDIAN |
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10 | #define STORE32_LE(X) bswap_32(X) |
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11 | #define LOAD32_LE(X) bswap_32(X) |
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12 | #elif __BYTE_ORDER == __LITTLE_ENDIAN |
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13 | #define STORE32_LE(X) (X) |
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14 | #define LOAD32_LE(X) (X) |
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15 | #else |
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16 | #error unkown endianness! |
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17 | #endif |
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18 | |||
19 | /**********************************************************************/ |
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20 | /* from trxhdr.h */ |
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21 | |||
22 | #define TRX_MAGIC 0x30524448 /* "HDR0" */ |
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23 | #define TRX_VERSION 1 |
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24 | #define TRX_MAX_LEN 0x5A0000 |
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25 | #define TRX_NO_HEADER 1 /* Do not write TRX header */ |
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26 | |||
27 | struct trx_header { |
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28 | uint32_t magic; /* "HDR0" */ |
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29 | uint32_t len; /* Length of file including header */ |
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30 | uint32_t crc32; /* 32-bit CRC from flag_version to end of file */ |
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31 | uint32_t flag_version; /* 0:15 flags, 16:31 version */ |
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32 | uint32_t offsets[3]; /* Offsets of partitions from start of header */ |
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33 | }; |
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34 | |||
35 | |||
36 | struct edimax_header { |
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37 | uint32_t sign; /* signature for header */ |
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38 | uint32_t length; /* start address but doesn't seems to be used... */ |
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39 | uint32_t start_addr; /* length of data, not used too ...*/ |
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40 | }; |
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41 | |||
42 | |||
43 | #define EDIMAX_PS16 0x36315350 /* "PS16" */ |
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44 | #define EDIMAX_HDR_LEN 0xc |
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45 | |||
46 | |||
47 | /**********************************************************************/ |
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48 | static const uint32_t crc_32_tab[] = { /* CRC polynomial 0xedb88320 */ |
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49 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, |
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50 | 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, |
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51 | 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, |
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52 | 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, |
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53 | 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, |
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54 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, |
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55 | 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, |
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56 | 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, |
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57 | 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, |
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58 | 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
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59 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, |
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60 | 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, |
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61 | 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, |
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62 | 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, |
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63 | 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, |
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64 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, |
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65 | 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, |
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66 | 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, |
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67 | 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, |
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68 | 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
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69 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, |
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70 | 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, |
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71 | 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, |
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72 | 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, |
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73 | 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, |
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74 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, |
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75 | 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, |
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76 | 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, |
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77 | 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, |
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78 | 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
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79 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, |
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80 | 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, |
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81 | 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, |
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82 | 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, |
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83 | 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, |
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84 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, |
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85 | 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, |
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86 | 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, |
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87 | 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, |
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88 | 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
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89 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, |
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90 | 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, |
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91 | 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d |
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92 | }; |
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93 | |||
94 | #define UPDC32(octet, crc) (crc_32_tab[((crc) ^ (octet)) & 0xff] ^ ((crc) >> 8)) |
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95 | |||
96 | uint32_t crc32buf(char *buf, size_t len) |
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97 | { |
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98 | uint32_t crc; |
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99 | |||
100 | crc = 0xFFFFFFFF; |
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101 | |||
102 | for (; len; --len, ++buf) |
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103 | crc = UPDC32(*buf, crc); |
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104 | |||
105 | return crc; |
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106 | } |
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107 | |||
108 | |||
109 | int main(int argc, char *argv[]) |
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110 | { |
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111 | FILE *fpIn = NULL; |
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112 | FILE *fpOut = NULL; |
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113 | struct edimax_header eh; |
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114 | size_t res; |
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115 | int length; |
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116 | |||
117 | char *buf; |
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118 | struct trx_header *p; |
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119 | |||
120 | if (argc != 3) { |
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121 | printf("Usage: %s <input file> <output file>\n", argv[0]); |
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122 | return -1; |
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123 | } |
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124 | |||
125 | fpIn = fopen(argv[1], "rb"); |
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126 | if (fpIn == NULL) { |
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127 | fprintf(stderr, "Unable to open %s\n", argv[1]); |
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128 | return EXIT_FAILURE; |
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129 | } |
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130 | /* compute the length of the file */ |
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131 | fseek(fpIn, 0, SEEK_END); |
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132 | length = ftell(fpIn); |
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133 | /* alloc enough memory to store the file */ |
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134 | buf = (char *)malloc(length); |
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135 | if (!buf) { |
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136 | fprintf(stderr, "malloc of buffers failed\n"); |
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137 | return EXIT_FAILURE; |
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138 | } |
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139 | |||
140 | rewind(fpIn); |
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141 | /* read the whole file*/ |
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142 | res = fread(buf, 1, length, fpIn); |
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143 | |||
144 | p = (struct trx_header *)buf; |
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145 | if (LOAD32_LE(p->magic) != TRX_MAGIC) { |
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146 | fprintf(stderr, "Not a trx file...%x\n", LOAD32_LE(p->magic)); |
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147 | return EXIT_FAILURE; |
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148 | } |
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149 | |||
150 | fclose(fpIn); |
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151 | |||
152 | fpOut = fopen(argv[2], "wb+"); |
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153 | if (fpOut == NULL) { |
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154 | fprintf(stderr, "Unable to open %s\n", argv[2]); |
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155 | return EXIT_FAILURE; |
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156 | } |
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157 | /* make the 3 partition beeing 12 bytes closer from the header */ |
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158 | memcpy(buf + LOAD32_LE(p->offsets[2]) - EDIMAX_HDR_LEN, buf + LOAD32_LE(p->offsets[2]), length - LOAD32_LE(p->offsets[2])); |
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159 | /* recompute the crc32 check */ |
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160 | p->crc32 = STORE32_LE(crc32buf((char *) &p->flag_version, length - offsetof(struct trx_header, flag_version))); |
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161 | |||
162 | eh.sign = STORE32_LE(EDIMAX_PS16); |
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163 | eh.length = STORE32_LE(length); |
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164 | eh.start_addr = STORE32_LE(0x80500000); |
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165 | |||
166 | /* write the modified file */ |
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167 | fwrite(&eh, sizeof(struct edimax_header), 1, fpOut); |
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168 | fwrite(buf, sizeof(char), length, fpOut); |
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169 | fclose(fpOut); |
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170 | } |
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171 |