FreeCalypso > hg > freecalypso-tools

annotate ffstools/tiffs-rd/decode.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents ed983d4040a8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * This C module implements the decode command, displaying certain
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3 * FFS files in a developer-friendly decoded form.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <unistd.h>
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12 #include "types.h"
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13 #include "struct.h"
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14 #include "globals.h"
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15 #include "pathname.h"
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16
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17 extern void write_afcdac_ascii();
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18 extern void write_stdmap_ascii();
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19 extern void write_adccal_table();
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20 extern void write_afcparams_table();
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21 extern void write_tx_ramps_table();
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22 extern void write_tx_levels_table();
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23 extern void write_tx_calchan_table();
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24 extern void write_tx_caltemp_table();
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25 extern void write_rx_calchan_table();
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26 extern void write_rx_caltemp_table();
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27 extern void write_rx_agcparams_table();
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28
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29 static void
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30 pcm_IMEI_decode(bin, outf)
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31 u8 *bin;
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32 FILE *outf;
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33 {
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34 u8 rev[8];
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35 unsigned n;
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36
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37 for (n = 0; n < 8; n++)
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38 rev[n] = ((bin[n] & 0xF0) >> 4) | ((bin[n] & 0x0F) << 4);
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39 fprintf(outf, "%02X%02X%02X%02X-%02X%02X%02X-%02X\n", rev[0], rev[1],
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40 rev[2], rev[3], rev[4], rev[5], rev[6], rev[7]);
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41 }
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42
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43 static struct map {
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44 char *req_name;
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45 char *pathname;
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46 int need_band;
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47 unsigned size;
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48 void (*decode_func)();
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49 } map_table[] = {
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50 {"adccal", "/sys/adccal", 0, 36, write_adccal_table},
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51 {"afcdac", "/gsm/rf/afcdac", 0, 2, write_afcdac_ascii},
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52 {"afcparams", "/gsm/rf/afcparams", 0, 24, write_afcparams_table},
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53 {"stdmap", "/gsm/rf/stdmap", 0, 2, write_stdmap_ascii},
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54 {"tx-ramps", "/gsm/rf/tx/ramps.%s", 1, 512, write_tx_ramps_table},
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55 {"tx-levels", "/gsm/rf/tx/levels.%s", 1, 128, write_tx_levels_table},
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56 {"tx-calchan", "/gsm/rf/tx/calchan.%s", 1, 128, write_tx_calchan_table},
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57 {"tx-caltemp", "/gsm/rf/tx/caltemp.%s", 1, 40, write_tx_caltemp_table},
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58 {"rx-calchan", "/gsm/rf/rx/calchan.%s", 1, 40, write_rx_calchan_table},
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59 {"rx-caltemp", "/gsm/rf/rx/caltemp.%s", 1, 44, write_rx_caltemp_table},
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60 {"rx-agcparams", "/gsm/rf/rx/agcparams.%s", 1, 8, write_rx_agcparams_table},
727
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61 {"pcm-IMEI", "/pcm/IMEI", 0, 8, pcm_IMEI_decode},
726
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62 {0, 0, 0, 0, 0}
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63 };
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64
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65 static u8 file_read_buf[512];
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66 static unsigned file_expected_size;
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67 static unsigned file_read_ptr;
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68
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69 static void
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70 read_chunk(ch)
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71 struct chunkinfo *ch;
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72 {
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73 if (!ch->len)
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74 return;
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75 if (file_read_ptr + ch->len > file_expected_size) {
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76 fprintf(stderr, "error: FFS file is longer than expected\n");
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77 exit(1);
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78 }
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79 bcopy(ch->start, file_read_buf + file_read_ptr, ch->len);
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80 file_read_ptr += ch->len;
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81 }
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82
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83 static void
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84 segment_read_callback(inf, opaque)
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85 struct inode_info *inf;
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86 u_long opaque;
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87 {
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88 struct chunkinfo chi;
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89
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90 size_extra_chunk(inf, &chi);
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91 read_chunk(&chi);
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92 }
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93
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94 cmd_decode(argc, argv)
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95 char **argv;
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96 {
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97 struct map *map;
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98 char pathname[PATHNAME_BUF_SIZE];
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99 int headino;
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100 struct inode_info *inf;
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101 struct chunkinfo chi;
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102
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103 if (argc < 2) {
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104 usage: fprintf(stderr, "usage: decode file-keyword [band]\n");
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105 exit(1);
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106 }
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107 for (map = map_table; map->req_name; map++)
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108 if (!strcmp(map->req_name, argv[1]))
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109 break;
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110 if (!map->req_name) {
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111 fprintf(stderr, "error: file keyword \"%s\" not known\n",
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112 argv[1]);
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113 exit(1);
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114 }
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115 if (map->need_band) {
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116 if (argc < 3) {
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117 fprintf(stderr,
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118 "error: band not specified for %s table\n",
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119 map->req_name);
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120 exit(1);
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121 }
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122 if (argc > 3)
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123 goto usage;
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124 if (strlen(argv[2]) > 7) {
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125 fprintf(stderr,
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126 "error: band name argument is too long\n");
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127 exit(1);
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128 }
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129 sprintf(pathname, map->pathname, argv[2]);
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130 } else {
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131 if (argc > 2)
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132 goto usage;
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133 strcpy(pathname, map->pathname);
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134 }
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135 file_expected_size = map->size;
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136
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137 read_ffs_image();
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138 find_inode_block();
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139 alloc_inode_table();
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140 find_root_inode();
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141
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142 headino = find_pathname(pathname);
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143 inf = inode_info[headino];
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144 if (inf->type != 0xF1) {
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145 fprintf(stderr, "error: FFS object is not a regular file\n");
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146 exit(1);
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147 }
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148 size_head_chunk(inf, &chi);
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149 read_chunk(&chi);
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150 iterate_seg_file(headino, segment_read_callback, 0L, 0, 0);
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151 if (file_read_ptr < file_expected_size) {
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152 fprintf(stderr, "error: FFS file is shorter than expected\n");
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153 exit(1);
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154 }
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155 map->decode_func(file_read_buf, stdout);
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156 exit(0);
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157 }