1 | #include "ndstool.h" |
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2 | #include "overlay.h" |
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3 | #include <errno.h> |
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4 | |
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5 | /* |
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6 | * MkDir |
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7 | */ |
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8 | void MkDir(char *name) |
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9 | { |
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10 | #ifdef __MINGW32__ |
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11 | if (mkdir(name)) |
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12 | #else |
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13 | if (mkdir(name, S_IRWXU)) |
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14 | #endif |
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15 | { |
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16 | if (errno != EEXIST) |
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17 | { |
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18 | fprintf(stderr, "Cannot create directory '%s'.\n", name); |
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19 | exit(1); |
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20 | } |
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21 | } |
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22 | } |
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23 | |
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24 | /* |
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25 | * ExtractFile |
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26 | * if rootdir==0 nothing will be written |
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27 | */ |
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28 | void ExtractFile(char *rootdir, const char *prefix, char *entry_name, unsigned int file_id) |
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29 | { |
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30 | unsigned int save_filepos = ftell(fNDS); |
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31 | |
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32 | // read FAT data |
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33 | fseek(fNDS, header.fat_offset + 8*file_id, SEEK_SET); |
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34 | unsigned_int top; |
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35 | fread(&top, 1, sizeof(top), fNDS); |
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36 | unsigned_int bottom; |
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37 | fread(&bottom, 1, sizeof(bottom), fNDS); |
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38 | unsigned int size = bottom - top; |
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39 | if (size > (1U << (17 + header.devicecap))) { fprintf(stderr, "File %u: Size is too big. FAT offset 0x%X contains invalid data.\n", file_id, header.fat_offset + 8*file_id); exit(1); } |
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40 | |
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41 | // print file info |
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42 | if (!rootdir || verbose) |
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43 | { |
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44 | printf("%5u 0x%08X 0x%08X %9u %s%s\n", file_id, (int)top, (int)bottom, size, prefix, entry_name); |
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45 | } |
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46 | |
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47 | // extract file |
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48 | if (rootdir) |
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49 | { |
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50 | // make filename |
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51 | char filename[MAXPATHLEN]; |
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52 | strcpy(filename, rootdir); |
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53 | strcat(filename, prefix); |
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54 | strcat(filename, entry_name); |
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55 | |
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56 | fseek(fNDS, top, SEEK_SET); |
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57 | FILE *fo = fopen(filename, "wb"); |
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58 | if (!fo) { fprintf(stderr, "Cannot create file '%s'.\n", filename); exit(1); } |
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59 | while (size > 0) |
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60 | { |
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61 | unsigned char copybuf[1024]; |
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62 | unsigned int size2 = (size >= sizeof(copybuf)) ? sizeof(copybuf) : size; |
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63 | fread(copybuf, 1, size2, fNDS); |
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64 | fwrite(copybuf, 1, size2, fo); |
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65 | size -= size2; |
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66 | } |
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67 | fclose(fo); |
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68 | } |
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69 | |
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70 | fseek(fNDS, save_filepos, SEEK_SET); |
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71 | } |
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72 | |
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73 | /* |
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74 | * MatchName |
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75 | */ |
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76 | bool MatchName(char *name, char *mask, int level=0) |
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77 | { |
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78 | char *a = name; |
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79 | char *b = mask; |
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80 | //for (int i=0; i<level; i++) printf(" "); printf("matching a='%s' b='%s'\n", a, b); |
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81 | while (1) |
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82 | { |
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83 | //for (int i=0; i<level; i++) printf("a=%s b=%s\n", a, b); |
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84 | if (*b == '*') |
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85 | { |
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86 | while (*b == '*') b++; |
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87 | //for (int i=0; i<level; i++) printf(" "); printf("* '%s' '%s'\n", a, b); |
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88 | bool match = false; |
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89 | char *a2 = a; |
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90 | do |
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91 | { |
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92 | if (MatchName(a2, b, level+1)) { a = a2; match = true; break; } |
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93 | } while (*a2++); |
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94 | if (!match) return false; |
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95 | //for (int i=0; i<level; i++) printf(" "); printf("matched a='%s' b='%s'\n", a, b); |
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96 | } |
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97 | //for (int i=0; i<level; i++) printf(" "); printf("a=%s b=%s\n", a, b); |
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98 | if (!*a && !*b) return true; |
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99 | if (*a && !*b) return false; |
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100 | if (!*a && *b) return false; |
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101 | if (*b != '?' && *a != *b) return false; |
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102 | a++; b++; |
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103 | } |
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104 | } |
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105 | |
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106 | /* |
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107 | * ExtractDirectory |
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108 | * filerootdir can be 0 for just listing files |
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109 | */ |
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110 | void ExtractDirectory(const char *prefix, unsigned int dir_id) |
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111 | { |
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112 | char strbuf[MAXPATHLEN]; |
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113 | unsigned int save_filepos = ftell(fNDS); |
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114 | |
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115 | fseek(fNDS, header.fnt_offset + 8*(dir_id & 0xFFF), SEEK_SET); |
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116 | unsigned_int entry_start; // reference location of entry name |
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117 | fread(&entry_start, 1, sizeof(entry_start), fNDS); |
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118 | unsigned_short top_file_id; // file ID of top entry |
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119 | fread(&top_file_id, 1, sizeof(top_file_id), fNDS); |
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120 | unsigned_short parent_id; // ID of parent directory or directory count (root) |
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121 | fread(&parent_id, 1, sizeof(parent_id), fNDS); |
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122 | |
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123 | fseek(fNDS, header.fnt_offset + entry_start, SEEK_SET); |
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124 | |
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125 | // print directory name |
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126 | //printf("%04X ", dir_id); |
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127 | if (!filerootdir || verbose) |
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128 | { |
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129 | printf("%s\n", prefix); |
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130 | } |
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131 | |
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132 | for (unsigned int file_id=top_file_id; ; file_id++) |
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133 | { |
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134 | unsigned char entry_type_name_length; |
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135 | fread(&entry_type_name_length, 1, sizeof(entry_type_name_length), fNDS); |
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136 | unsigned int name_length = entry_type_name_length & 127; |
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137 | bool entry_type_directory = (entry_type_name_length & 128) ? true : false; |
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138 | if (name_length == 0) break; |
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139 | |
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140 | char entry_name[128]; |
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141 | memset(entry_name, 0, 128); |
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142 | fread(entry_name, 1, entry_type_name_length & 127, fNDS); |
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143 | if (entry_type_directory) |
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144 | { |
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145 | unsigned_short dir_id; |
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146 | fread(&dir_id, 1, sizeof(dir_id), fNDS); |
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147 | |
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148 | if (filerootdir) |
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149 | { |
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150 | strcpy(strbuf, filerootdir); |
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151 | strcat(strbuf, prefix); |
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152 | strcat(strbuf, entry_name); |
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153 | MkDir(strbuf); |
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154 | } |
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155 | |
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156 | strcpy(strbuf, prefix); |
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157 | strcat(strbuf, entry_name); |
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158 | strcat(strbuf, "/"); |
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159 | ExtractDirectory(strbuf, dir_id); |
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160 | } |
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161 | else |
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162 | { |
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163 | if (1) |
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164 | { |
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165 | bool match = (filemask_num == 0); |
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166 | for (int i=0; i<filemask_num; i++) |
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167 | { |
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168 | //printf("%s %s\n", entry_name, filemasks[i]); |
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169 | if (MatchName(entry_name, filemasks[i])) { match = true; break; } |
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170 | } |
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171 | |
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172 | //if (!directorycreated) |
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173 | //{ |
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174 | //} |
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175 | |
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176 | //printf("%d\n", match); |
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177 | |
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178 | if (match) ExtractFile(filerootdir, prefix, entry_name, file_id); |
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179 | } |
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180 | } |
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181 | } |
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182 | |
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183 | fseek(fNDS, save_filepos, SEEK_SET); |
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184 | } |
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185 | |
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186 | /* |
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187 | * ExtractFiles |
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188 | */ |
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189 | void ExtractFiles(char *ndsfilename) |
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190 | { |
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191 | //printf("%d\n", MatchName("hello", "h*el*lo")); exit(0); // TEST |
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192 | fNDS = fopen(ndsfilename, "rb"); |
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193 | if (!fNDS) { fprintf(stderr, "Cannot open file '%s'.\n", ndsfilename); exit(1); } |
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194 | fread(&header, 512, 1, fNDS); |
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195 | |
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196 | if (filerootdir) |
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197 | { |
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198 | MkDir(filerootdir); |
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199 | } |
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200 | |
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201 | ExtractDirectory("/", 0xF000); // list or extract |
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202 | |
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203 | fclose(fNDS); |
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204 | } |
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205 | |
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206 | /* |
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207 | * ExtractOverlayFiles2 |
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208 | */ |
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209 | void ExtractOverlayFiles2(unsigned int overlay_offset, unsigned int overlay_size) |
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210 | { |
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211 | OverlayEntry overlayEntry; |
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212 | |
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213 | if (overlay_size) |
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214 | { |
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215 | fseek(fNDS, overlay_offset, SEEK_SET); |
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216 | for (unsigned int i=0; i<overlay_size; i+=sizeof(OverlayEntry)) |
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217 | { |
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218 | fread(&overlayEntry, 1, sizeof(overlayEntry), fNDS); |
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219 | char s[32]; sprintf(s, OVERLAY_FMT, overlayEntry.file_id); |
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220 | ExtractFile(overlaydir, "/", s, overlayEntry.file_id); |
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221 | } |
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222 | } |
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223 | } |
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224 | |
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225 | /* |
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226 | * ExtractOverlayFiles |
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227 | */ |
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228 | void ExtractOverlayFiles() |
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229 | { |
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230 | fNDS = fopen(ndsfilename, "rb"); |
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231 | if (!fNDS) { fprintf(stderr, "Cannot open file '%s'.\n", ndsfilename); exit(1); } |
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232 | fread(&header, 512, 1, fNDS); |
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233 | |
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234 | if (overlaydir) |
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235 | { |
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236 | MkDir(overlaydir); |
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237 | } |
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238 | |
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239 | ExtractOverlayFiles2(header.arm9_overlay_offset, header.arm9_overlay_size); |
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240 | ExtractOverlayFiles2(header.arm7_overlay_offset, header.arm7_overlay_size); |
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241 | |
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242 | fclose(fNDS); |
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243 | } |
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244 | |
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245 | /* |
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246 | * Extract |
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247 | */ |
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248 | void Extract(char *outfilename, bool indirect_offset, unsigned int offset, bool indirect_size, unsigned size, bool with_footer) |
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249 | { |
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250 | fNDS = fopen(ndsfilename, "rb"); |
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251 | if (!fNDS) { fprintf(stderr, "Cannot open file '%s'.\n", ndsfilename); exit(1); } |
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252 | fread(&header, 512, 1, fNDS); |
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253 | |
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254 | if (indirect_offset) offset = *((unsigned int *)&header + offset/4); |
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255 | if (indirect_size) size = *((unsigned int *)&header + size/4); |
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256 | |
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257 | fseek(fNDS, offset, SEEK_SET); |
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258 | |
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259 | FILE *fo = fopen(outfilename, "wb"); |
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260 | if (!fo) { fprintf(stderr, "Cannot create file '%s'.\n", outfilename); exit(1); } |
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261 | |
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262 | unsigned char copybuf[1024]; |
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263 | while (size > 0) |
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264 | { |
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265 | unsigned int size2 = (size >= sizeof(copybuf)) ? sizeof(copybuf) : size; |
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266 | fread(copybuf, 1, size2, fNDS); |
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267 | fwrite(copybuf, 1, size2, fo); |
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268 | size -= size2; |
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269 | } |
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270 | |
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271 | if (with_footer) |
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272 | { |
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273 | unsigned_int nitrocode; |
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274 | fread(&nitrocode, sizeof(nitrocode), 1, fNDS); |
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275 | if (nitrocode == 0xDEC00621) |
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276 | { |
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277 | // 0x2106C0DE, version info, reserved? |
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278 | for (int i=0; i<3; i++) // write additional 3 words |
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279 | { |
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280 | fwrite(&nitrocode, sizeof(nitrocode), 1, fo); |
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281 | fread(&nitrocode, sizeof(nitrocode), 1, fNDS); // next field |
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282 | } |
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283 | } |
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284 | } |
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285 | |
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286 | fclose(fo); |
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287 | fclose(fNDS); |
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288 | } |
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