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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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94 | mario79 | 7 | |
593 | mikedld | 8 | $Revision: 628 $ |
9 | |||
10 | |||
87 | mario79 | 11 | uglobal |
12 | cd_current_pointer_of_input dd 0 |
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13 | cd_current_pointer_of_input_2 dd 0 |
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585 | mario79 | 14 | cd_mem_location dd 0 |
15 | cd_counter_block dd 0 |
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16 | IDE_Channel_1 db 0 |
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17 | IDE_Channel_2 db 0 |
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87 | mario79 | 18 | endg |
19 | |||
20 | reserve_cd: |
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21 | |||
22 | cli |
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23 | cmp [cd_status],0 |
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585 | mario79 | 24 | je reserve_ok2 |
87 | mario79 | 25 | |
26 | sti |
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27 | call change_task |
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95 | mario79 | 28 | jmp reserve_cd |
87 | mario79 | 29 | |
30 | reserve_ok2: |
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31 | |||
32 | push eax |
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379 | serge | 33 | mov eax,[CURRENT_TASK] |
87 | mario79 | 34 | shl eax,5 |
379 | serge | 35 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
87 | mario79 | 36 | mov [cd_status],eax |
37 | pop eax |
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38 | sti |
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39 | ret |
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95 | mario79 | 40 | |
41 | reserve_cd_channel: |
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42 | cmp [ChannelNumber],1 |
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43 | jne .IDE_Channel_2 |
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44 | .IDE_Channel_1: |
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45 | cli |
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46 | cmp [IDE_Channel_1],0 |
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585 | mario79 | 47 | je .reserve_ok_1 |
95 | mario79 | 48 | sti |
49 | call change_task |
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50 | jmp .IDE_Channel_1 |
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51 | .IDE_Channel_2: |
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52 | cli |
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53 | cmp [IDE_Channel_2],0 |
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585 | mario79 | 54 | je .reserve_ok_2 |
95 | mario79 | 55 | sti |
56 | call change_task |
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57 | jmp .IDE_Channel_1 |
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58 | .reserve_ok_1: |
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59 | mov [IDE_Channel_1],1 |
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60 | ret |
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61 | .reserve_ok_2: |
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62 | mov [IDE_Channel_2],1 |
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63 | ret |
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64 | |||
65 | free_cd_channel: |
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66 | cmp [ChannelNumber],1 |
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67 | jne .IDE_Channel_2 |
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68 | .IDE_Channel_1: |
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379 | serge | 69 | mov [IDE_Channel_1],0 |
95 | mario79 | 70 | ret |
71 | .IDE_Channel_2: |
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72 | mov [IDE_Channel_2],0 |
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73 | ret |
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364 | diamond | 74 | |
379 | serge | 75 | uglobal |
87 | mario79 | 76 | cd_status dd 0 |
364 | diamond | 77 | endg |
87 | mario79 | 78 | |
79 | ;---------------------------------------------------------------- |
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80 | ; |
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81 | ; fs_CdRead - LFN variant for reading CD disk |
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82 | ; |
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83 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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84 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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85 | ; may be ebx=0 - start from first byte |
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86 | ; ecx number of bytes to read, 0+ |
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87 | ; edx mem location to return data |
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88 | ; |
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89 | ; ret ebx = bytes read or 0xffffffff file not found |
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90 | ; eax = 0 ok read or other = errormsg |
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91 | ; |
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92 | ;-------------------------------------------------------------- |
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93 | fs_CdRead: |
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94 | push edi |
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95 | cmp byte [esi], 0 |
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96 | jnz @f |
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97 | .noaccess: |
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98 | pop edi |
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99 | .noaccess_2: |
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585 | mario79 | 100 | or ebx, -1 |
87 | mario79 | 101 | mov eax, ERROR_ACCESS_DENIED |
102 | ret |
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379 | serge | 103 | |
87 | mario79 | 104 | .noaccess_3: |
105 | pop eax edx ecx edi |
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106 | jmp .noaccess_2 |
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107 | |||
108 | @@: |
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109 | call cd_find_lfn |
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110 | jnc .found |
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111 | pop edi |
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112 | cmp [DevErrorCode],0 |
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113 | jne .noaccess_2 |
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585 | mario79 | 114 | or ebx, -1 |
87 | mario79 | 115 | mov eax, ERROR_FILE_NOT_FOUND |
116 | ret |
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117 | |||
118 | .found: |
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119 | mov edi,[cd_current_pointer_of_input] |
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585 | mario79 | 120 | test byte [edi+25],10b ; do not allow read directories |
87 | mario79 | 121 | jnz .noaccess |
122 | test ebx, ebx |
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585 | mario79 | 123 | jz .l1 |
87 | mario79 | 124 | cmp dword [ebx+4], 0 |
585 | mario79 | 125 | jz @f |
126 | xor ebx, ebx |
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87 | mario79 | 127 | .reteof: |
128 | mov eax, 6 ; end of file |
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129 | pop edi |
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130 | ret |
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131 | @@: |
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132 | mov ebx, [ebx] |
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133 | .l1: |
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585 | mario79 | 134 | push ecx edx |
135 | push 0 |
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136 | mov eax, [edi+10] ; реальный размер файловой секции |
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137 | sub eax, ebx |
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138 | jb .eof |
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139 | cmp eax, ecx |
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140 | jae @f |
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141 | mov ecx, eax |
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142 | mov byte [esp], 6 |
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87 | mario79 | 143 | @@: |
144 | mov eax,[edi+2] |
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145 | mov [CDSectorAddress],eax |
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146 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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147 | .new_sector: |
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148 | test ecx, ecx |
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585 | mario79 | 149 | jz .done |
87 | mario79 | 150 | sub ebx, 2048 |
154 | diamond | 151 | jae .next |
87 | mario79 | 152 | add ebx, 2048 |
153 | jnz .incomplete_sector |
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154 | cmp ecx, 2048 |
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585 | mario79 | 155 | jb .incomplete_sector |
87 | mario79 | 156 | ; we may read and memmove complete sector |
157 | mov [CDDataBuf_pointer],edx |
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585 | mario79 | 158 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 159 | cmp [DevErrorCode],0 |
160 | jne .noaccess_3 |
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161 | add edx, 2048 |
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162 | sub ecx, 2048 |
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154 | diamond | 163 | .next: |
164 | inc dword [CDSectorAddress] |
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87 | mario79 | 165 | jmp .new_sector |
166 | .incomplete_sector: |
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167 | ; we must read and memmove incomplete sector |
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168 | mov [CDDataBuf_pointer],CDDataBuf |
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585 | mario79 | 169 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 170 | cmp [DevErrorCode],0 |
379 | serge | 171 | jne .noaccess_3 |
87 | mario79 | 172 | push ecx |
173 | add ecx, ebx |
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174 | cmp ecx, 2048 |
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175 | jbe @f |
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176 | mov ecx, 2048 |
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177 | @@: |
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178 | sub ecx, ebx |
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179 | push edi esi ecx |
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180 | mov edi,edx |
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585 | mario79 | 181 | lea esi, [CDDataBuf + ebx] |
87 | mario79 | 182 | cld |
183 | rep movsb |
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184 | pop ecx esi edi |
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185 | add edx, ecx |
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186 | sub [esp], ecx |
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187 | pop ecx |
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188 | xor ebx, ebx |
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154 | diamond | 189 | jmp .next |
379 | serge | 190 | |
87 | mario79 | 191 | .done: |
585 | mario79 | 192 | mov ebx, edx |
193 | pop eax edx ecx edi |
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194 | sub ebx, edx |
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195 | ret |
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87 | mario79 | 196 | .eof: |
585 | mario79 | 197 | mov ebx, edx |
198 | pop eax edx ecx |
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199 | sub ebx, edx |
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200 | jmp .reteof |
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87 | mario79 | 201 | |
202 | ;---------------------------------------------------------------- |
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203 | ; |
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204 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
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205 | ; |
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206 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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207 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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208 | ; & flags (bitfields) |
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209 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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210 | ; ecx number of blocks to read, 0+ |
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211 | ; edx mem location to return data |
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212 | ; |
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213 | ; ret ebx = blocks read or 0xffffffff folder not found |
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214 | ; eax = 0 ok read or other = errormsg |
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215 | ; |
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216 | ;-------------------------------------------------------------- |
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217 | fs_CdReadFolder: |
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585 | mario79 | 218 | push edi |
219 | call cd_find_lfn |
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220 | jnc .found |
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221 | pop edi |
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222 | cmp [DevErrorCode], 0 |
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223 | jne .noaccess_1 |
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224 | or ebx, -1 |
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225 | mov eax, ERROR_FILE_NOT_FOUND |
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226 | ret |
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87 | mario79 | 227 | .found: |
585 | mario79 | 228 | mov edi, [cd_current_pointer_of_input] |
229 | test byte [edi+25], 10b ; do not allow read directories |
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230 | jnz .found_dir |
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231 | pop edi |
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87 | mario79 | 232 | .noaccess_1: |
585 | mario79 | 233 | or ebx, -1 |
234 | mov eax, ERROR_ACCESS_DENIED |
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235 | ret |
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87 | mario79 | 236 | .found_dir: |
585 | mario79 | 237 | mov eax, [edi+2] ; eax=cluster |
238 | mov [CDSectorAddress], eax |
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239 | mov eax, [edi+10] ; размер директрории |
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87 | mario79 | 240 | .doit: |
241 | ; init header |
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585 | mario79 | 242 | push eax ecx |
243 | mov edi, edx |
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244 | mov ecx, 32/4 |
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245 | xor eax, eax |
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246 | rep stosd |
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247 | pop ecx eax |
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248 | mov byte [edx], 1 ; version |
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249 | mov [cd_mem_location], edx |
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250 | add [cd_mem_location], 32 |
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87 | mario79 | 251 | ; начинаем переброску БДВК в УСВК |
252 | ;.mainloop: |
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585 | mario79 | 253 | mov [cd_counter_block], dword 0 |
254 | dec dword [CDSectorAddress] |
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255 | push ecx |
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87 | mario79 | 256 | .read_to_buffer: |
585 | mario79 | 257 | inc dword [CDSectorAddress] |
258 | mov [CDDataBuf_pointer], CDDataBuf |
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259 | call ReadCDWRetr ; читаем сектор директории |
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260 | cmp [DevErrorCode], 0 |
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261 | jne .noaccess_1 |
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262 | call .get_names_from_buffer |
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263 | sub eax,2048 |
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87 | mario79 | 264 | ; директория закончилась? |
585 | mario79 | 265 | ja .read_to_buffer |
266 | mov edi, [cd_counter_block] |
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267 | mov [edx+8], edi |
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268 | mov edi, [ebx] |
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269 | sub [edx+4], edi |
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270 | xor eax, eax |
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271 | dec ecx |
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272 | js @f |
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273 | mov al, ERROR_END_OF_FILE |
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364 | diamond | 274 | @@: |
585 | mario79 | 275 | pop ecx edi |
276 | mov ebx, [edx+4] |
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277 | ret |
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364 | diamond | 278 | |
87 | mario79 | 279 | .get_names_from_buffer: |
280 | mov [cd_current_pointer_of_input_2],CDDataBuf |
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281 | push eax esi edi edx |
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282 | .get_names_from_buffer_1: |
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283 | call cd_get_name |
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585 | mario79 | 284 | jc .end_buffer |
87 | mario79 | 285 | inc dword [cd_counter_block] |
286 | mov eax,[cd_counter_block] |
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287 | cmp [ebx],eax |
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288 | jae .get_names_from_buffer_1 |
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289 | test ecx, ecx |
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585 | mario79 | 290 | jz .get_names_from_buffer_1 |
87 | mario79 | 291 | mov edi,[cd_counter_block] |
379 | serge | 292 | mov [edx+4],edi |
87 | mario79 | 293 | dec ecx |
294 | mov esi,ebp |
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295 | mov edi,[cd_mem_location] |
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296 | add edi,40 |
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297 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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298 | jnz .unicode |
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299 | ; jmp .unicode |
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300 | .ansi: |
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301 | cmp [cd_counter_block],2 |
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302 | jbe .ansi_parent_directory |
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303 | cld |
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304 | lodsw |
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305 | xchg ah,al |
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306 | call uni2ansi_char |
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307 | cld |
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308 | stosb |
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309 | ; проверка конца файла |
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96 | mario79 | 310 | mov ax,[esi] |
311 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 312 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 313 | ; проверка для файлов не заканчивающихся сепаратором |
314 | movzx eax,byte [ebp-33] |
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315 | add eax,ebp |
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316 | sub eax,34 |
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317 | cmp esi,eax |
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585 | mario79 | 318 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 319 | ; проверка конца папки |
320 | movzx eax,byte [ebp-1] |
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321 | add eax,ebp |
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322 | cmp esi,eax |
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585 | mario79 | 323 | jb .ansi |
87 | mario79 | 324 | .cd_get_parameters_of_file_1: |
325 | mov [edi],byte 0 |
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90 | mario79 | 326 | call cd_get_parameters_of_file |
87 | mario79 | 327 | add [cd_mem_location],304 |
328 | jmp .get_names_from_buffer_1 |
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329 | |||
330 | .ansi_parent_directory: |
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331 | cmp [cd_counter_block],2 |
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585 | mario79 | 332 | je @f |
87 | mario79 | 333 | mov [edi],byte '.' |
334 | inc edi |
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335 | jmp .cd_get_parameters_of_file_1 |
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336 | @@: |
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337 | mov [edi],word '..' |
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338 | add edi,2 |
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339 | jmp .cd_get_parameters_of_file_1 |
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340 | |||
341 | .unicode: |
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342 | cmp [cd_counter_block],2 |
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343 | jbe .unicode_parent_directory |
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344 | cld |
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345 | movsw |
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346 | ; проверка конца файла |
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347 | mov ax,[esi] |
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348 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 349 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 350 | ; проверка для файлов не заканчивающихся сепаратором |
351 | movzx eax,byte [ebp-33] |
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352 | add eax,ebp |
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353 | sub eax,34 |
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354 | cmp esi,eax |
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585 | mario79 | 355 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 356 | ; проверка конца папки |
357 | movzx eax,byte [ebp-1] |
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358 | add eax,ebp |
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359 | cmp esi,eax |
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585 | mario79 | 360 | jb .unicode |
87 | mario79 | 361 | .cd_get_parameters_of_file_2: |
362 | mov [edi],word 0 |
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90 | mario79 | 363 | call cd_get_parameters_of_file |
87 | mario79 | 364 | add [cd_mem_location],560 |
365 | jmp .get_names_from_buffer_1 |
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366 | |||
367 | .unicode_parent_directory: |
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368 | cmp [cd_counter_block],2 |
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585 | mario79 | 369 | je @f |
87 | mario79 | 370 | mov [edi],word 2E00h ; '.' |
371 | add edi,2 |
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372 | jmp .cd_get_parameters_of_file_2 |
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373 | @@: |
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374 | mov [edi],dword 2E002E00h ; '..' |
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375 | add edi,4 |
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376 | jmp .cd_get_parameters_of_file_2 |
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377 | |||
90 | mario79 | 378 | .end_buffer: |
379 | pop edx edi esi eax |
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380 | ret |
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381 | |||
382 | cd_get_parameters_of_file: |
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87 | mario79 | 383 | mov edi,[cd_mem_location] |
90 | mario79 | 384 | cd_get_parameters_of_file_1: |
87 | mario79 | 385 | ; получаем атрибуты файла |
386 | xor eax,eax |
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536 | diamond | 387 | ; файл не архивировался |
388 | inc eax |
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87 | mario79 | 389 | shl eax,1 |
390 | ; это каталог? |
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391 | test [ebp-8],byte 2 |
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585 | mario79 | 392 | jz .file |
536 | diamond | 393 | inc eax |
87 | mario79 | 394 | .file: |
395 | ; метка тома не как в FAT, в этом виде отсутсвует |
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396 | ; файл не является системным |
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397 | shl eax,3 |
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398 | ; файл является скрытым? (атрибут существование) |
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399 | test [ebp-8],byte 1 |
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585 | mario79 | 400 | jz .hidden |
536 | diamond | 401 | inc eax |
87 | mario79 | 402 | .hidden: |
403 | shl eax,1 |
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404 | ; файл всегда только для чтения, так как это CD |
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536 | diamond | 405 | inc eax |
87 | mario79 | 406 | mov [edi],eax |
407 | ; получаем время для файла |
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408 | ;час |
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409 | movzx eax,byte [ebp-12] |
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410 | shl eax,8 |
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411 | ;минута |
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412 | mov al,[ebp-11] |
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413 | shl eax,8 |
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414 | ;секунда |
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415 | mov al,[ebp-10] |
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416 | ;время создания файла |
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417 | mov [edi+8],eax |
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418 | ;время последнего доступа |
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419 | mov [edi+16],eax |
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420 | ;время последней записи |
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421 | mov [edi+24],eax |
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422 | ; получаем дату для файла |
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423 | ;год |
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424 | movzx eax,byte [ebp-15] |
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425 | add eax,1900 |
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426 | shl eax,8 |
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427 | ;месяц |
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428 | mov al,[ebp-14] |
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429 | shl eax,8 |
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430 | ;день |
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431 | mov al,[ebp-13] |
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432 | ;дата создания файла |
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433 | mov [edi+12],eax |
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434 | ;время последнего доступа |
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435 | mov [edi+20],eax |
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436 | ;время последней записи |
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437 | mov [edi+28],eax |
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438 | ; получаем тип данных имени |
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439 | xor eax,eax |
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440 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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441 | jnz .unicode_1 |
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442 | mov [edi+4],eax |
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443 | jmp @f |
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444 | .unicode_1: |
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445 | inc eax |
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446 | mov [edi+4],eax |
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447 | @@: |
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448 | ; получаем размер файла в байтах |
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449 | xor eax,eax |
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450 | mov [edi+32+4],eax |
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451 | mov eax,[ebp-23] |
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452 | mov [edi+32],eax |
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453 | ret |
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454 | |||
90 | mario79 | 455 | ;---------------------------------------------------------------- |
456 | ; |
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457 | ; fs_CdGetFileInfo - LFN variant for CD |
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458 | ; get file/directory attributes structure |
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379 | serge | 459 | ; |
90 | mario79 | 460 | ;---------------------------------------------------------------- |
461 | fs_CdGetFileInfo: |
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585 | mario79 | 462 | cmp byte [esi], 0 |
463 | jnz @f |
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464 | mov eax, 2 |
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465 | ret |
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90 | mario79 | 466 | @@: |
585 | mario79 | 467 | push edi |
468 | call cd_find_lfn |
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469 | pushfd |
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470 | cmp [DevErrorCode], 0 |
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471 | jz @f |
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472 | popfd |
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473 | pop edi |
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474 | mov eax, 11 |
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475 | ret |
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90 | mario79 | 476 | @@: |
585 | mario79 | 477 | popfd |
478 | jnc @f |
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479 | pop edi |
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480 | mov eax, ERROR_FILE_NOT_FOUND |
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481 | ret |
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90 | mario79 | 482 | @@: |
483 | |||
585 | mario79 | 484 | mov edi, edx |
485 | push ebp |
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486 | mov ebp, [cd_current_pointer_of_input] |
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487 | add ebp, 33 |
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488 | call cd_get_parameters_of_file_1 |
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489 | pop ebp |
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490 | and dword [edi+4], 0 |
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491 | pop edi |
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492 | xor eax, eax |
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493 | ret |
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90 | mario79 | 494 | |
628 | mario79 | 495 | ;---------------------------------------------------------------- |
87 | mario79 | 496 | cd_find_lfn: |
585 | mario79 | 497 | mov [cd_appl_data],0 |
521 | diamond | 498 | ; in: esi+ebp -> name |
87 | mario79 | 499 | ; out: CF=1 - file not found |
500 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
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585 | mario79 | 501 | push eax esi |
87 | mario79 | 502 | ; 16 сектор начало набора дескрипторов томов |
585 | mario79 | 503 | mov [CDSectorAddress],dword 15 |
504 | mov [CDDataBuf_pointer],CDDataBuf |
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628 | mario79 | 505 | |
506 | call WaitUnitReady |
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507 | cmp [DevErrorCode],0 |
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508 | jne .access_denied |
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509 | |||
585 | mario79 | 510 | call prevent_medium_removal |
87 | mario79 | 511 | .start: |
585 | mario79 | 512 | inc dword [CDSectorAddress] |
513 | call ReadCDWRetr ;_1 |
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87 | mario79 | 514 | cmp [DevErrorCode],0 |
515 | jne .access_denied |
||
516 | ; проверка на вшивость |
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585 | mario79 | 517 | cmp [CDDataBuf+1],dword 'CD00' |
518 | jne .access_denied |
||
519 | cmp [CDDataBuf+5],byte '1' |
||
520 | jne .access_denied |
||
87 | mario79 | 521 | ; сектор является терминатором набор дескрипторов томов? |
585 | mario79 | 522 | cmp [CDDataBuf],byte 0xff |
523 | je .access_denied |
||
87 | mario79 | 524 | ; сектор является дополнительным и улучшенным дескриптором тома? |
585 | mario79 | 525 | cmp [CDDataBuf],byte 0x2 |
526 | jne .start |
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87 | mario79 | 527 | ; сектор является дополнительным дескриптором тома? |
585 | mario79 | 528 | cmp [CDDataBuf+6],byte 0x1 |
529 | jne .start |
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87 | mario79 | 530 | ; параметры root директрории |
585 | mario79 | 531 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
532 | mov [CDSectorAddress],eax |
||
533 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
534 | cmp byte [esi], 0 |
||
535 | jnz @f |
||
536 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
537 | jmp .done |
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87 | mario79 | 538 | @@: |
539 | ; начинаем поиск |
||
540 | .mainloop: |
||
585 | mario79 | 541 | dec dword [CDSectorAddress] |
87 | mario79 | 542 | .read_to_buffer: |
585 | mario79 | 543 | inc dword [CDSectorAddress] |
544 | mov [CDDataBuf_pointer],CDDataBuf |
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545 | call ReadCDWRetr ; читаем сектор директории |
||
546 | cmp [DevErrorCode],0 |
||
547 | jne .access_denied |
||
548 | push ebp |
||
549 | call cd_find_name_in_buffer |
||
550 | pop ebp |
||
551 | jnc .found |
||
552 | sub eax,2048 |
||
87 | mario79 | 553 | ; директория закончилась? |
585 | mario79 | 554 | cmp eax,0 |
555 | ja .read_to_buffer |
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87 | mario79 | 556 | ; нет искомого элемента цепочки |
557 | .access_denied: |
||
585 | mario79 | 558 | pop esi eax |
559 | mov [cd_appl_data],1 |
||
560 | stc |
||
561 | ret |
||
87 | mario79 | 562 | ; искомый элемент цепочки найден |
563 | .found: |
||
564 | ; конец пути файла |
||
585 | mario79 | 565 | cmp byte [esi-1], 0 |
566 | jz .done |
||
521 | diamond | 567 | .nested: |
585 | mario79 | 568 | mov eax,[cd_current_pointer_of_input] |
569 | push dword [eax+2] |
||
570 | pop dword [CDSectorAddress] ; начало директории |
||
571 | mov eax,[eax+2+8] ; размер директории |
||
572 | jmp .mainloop |
||
87 | mario79 | 573 | ; указатель файла найден |
574 | .done: |
||
585 | mario79 | 575 | test ebp, ebp |
576 | jz @f |
||
577 | mov esi, ebp |
||
578 | xor ebp, ebp |
||
579 | jmp .nested |
||
521 | diamond | 580 | @@: |
585 | mario79 | 581 | pop esi eax |
582 | mov [cd_appl_data],1 |
||
583 | clc |
||
584 | ret |
||
379 | serge | 585 | |
87 | mario79 | 586 | cd_find_name_in_buffer: |
585 | mario79 | 587 | mov [cd_current_pointer_of_input_2],CDDataBuf |
87 | mario79 | 588 | .start: |
585 | mario79 | 589 | call cd_get_name |
590 | jc .not_found |
||
591 | call cd_compare_name |
||
592 | jc .start |
||
379 | serge | 593 | .found: |
585 | mario79 | 594 | clc |
595 | ret |
||
87 | mario79 | 596 | .not_found: |
585 | mario79 | 597 | stc |
598 | ret |
||
87 | mario79 | 599 | |
600 | cd_get_name: |
||
585 | mario79 | 601 | push eax |
602 | mov ebp,[cd_current_pointer_of_input_2] |
||
603 | mov [cd_current_pointer_of_input],ebp |
||
604 | mov eax,[ebp] |
||
605 | cmp eax,0 ; входы закончились? |
||
606 | je .next_sector |
||
607 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
||
608 | jae .next_sector |
||
609 | movzx eax, byte [ebp] |
||
610 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
611 | add ebp,33 ; указатель установлен на начало имени |
||
612 | pop eax |
||
613 | clc |
||
614 | ret |
||
87 | mario79 | 615 | .next_sector: |
585 | mario79 | 616 | pop eax |
617 | stc |
||
618 | ret |
||
87 | mario79 | 619 | |
620 | cd_compare_name: |
||
621 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
622 | ; in: esi->name, ebp->name |
||
623 | ; out: if names match: ZF=1 and esi->next component of name |
||
624 | ; else: ZF=0, esi is not changed |
||
625 | ; destroys eax |
||
379 | serge | 626 | push esi eax edi |
87 | mario79 | 627 | mov edi,ebp |
628 | .loop: |
||
629 | cld |
||
630 | lodsb |
||
536 | diamond | 631 | push eax |
99 | mario79 | 632 | call char_todown |
87 | mario79 | 633 | call ansi2uni_char |
634 | xchg ah,al |
||
635 | scasw |
||
536 | diamond | 636 | pop eax |
585 | mario79 | 637 | je .coincides |
99 | mario79 | 638 | call char_toupper |
87 | mario79 | 639 | call ansi2uni_char |
640 | xchg ah,al |
||
641 | sub edi,2 |
||
642 | scasw |
||
643 | jne .name_not_coincide |
||
644 | .coincides: |
||
645 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
585 | mario79 | 646 | je .done |
647 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
648 | je .done |
||
87 | mario79 | 649 | jmp .loop |
650 | .name_not_coincide: |
||
651 | pop edi eax esi |
||
652 | stc |
||
653 | ret |
||
654 | .done: |
||
655 | ; проверка конца файла |
||
656 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
585 | mario79 | 657 | je .done_1 |
87 | mario79 | 658 | ; проверка для файлов не заканчивающихся сепаратором |
659 | movzx eax,byte [ebp-33] |
||
660 | add eax,ebp |
||
661 | sub eax,34 |
||
662 | cmp edi,eax |
||
585 | mario79 | 663 | je .done_1 |
87 | mario79 | 664 | ; проверка конца папки |
665 | movzx eax,byte [ebp-1] |
||
666 | add eax,ebp |
||
667 | cmp edi,eax |
||
668 | jne .name_not_coincide |
||
669 | .done_1: |
||
670 | pop edi eax |
||
671 | add esp,4 |
||
672 | inc esi |
||
673 | clc |
||
674 | ret |
||
379 | serge | 675 | |
87 | mario79 | 676 | char_todown: |
677 | ; convert character to uppercase, using cp866 encoding |
||
678 | ; in: al=symbol |
||
679 | ; out: al=converted symbol |
||
585 | mario79 | 680 | cmp al, 'A' |
681 | jb .ret |
||
682 | cmp al, 'Z' |
||
683 | jbe .az |
||
684 | cmp al, 'Ђ' |
||
685 | jb .ret |
||
686 | cmp al, 'ђ' |
||
687 | jb .rus1 |
||
688 | cmp al, 'џ' |
||
689 | ja .ret |
||
87 | mario79 | 690 | ; 0x90-0x9F -> 0xE0-0xEF |
585 | mario79 | 691 | add al, 'а'-'ђ' |
87 | mario79 | 692 | .ret: |
585 | mario79 | 693 | ret |
87 | mario79 | 694 | .rus1: |
695 | ; 0x80-0x8F -> 0xA0-0xAF |
||
696 | .az: |
||
585 | mario79 | 697 | add al, 0x20 |
698 | ret |
||
379 | serge | 699 | |
87 | mario79 | 700 | uni2ansi_char: |
701 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
702 | ; in: ax=UNICODE character |
||
703 | ; out: al=converted ANSI character |
||
585 | mario79 | 704 | cmp ax, 0x80 |
705 | jb .ascii |
||
706 | cmp ax, 0x401 |
||
707 | jz .yo1 |
||
708 | cmp ax, 0x451 |
||
709 | jz .yo2 |
||
710 | cmp ax, 0x410 |
||
711 | jb .unk |
||
712 | cmp ax, 0x440 |
||
713 | jb .rus1 |
||
714 | cmp ax, 0x450 |
||
715 | jb .rus2 |
||
87 | mario79 | 716 | .unk: |
585 | mario79 | 717 | mov al, '_' |
718 | jmp .doit |
||
87 | mario79 | 719 | .yo1: |
585 | mario79 | 720 | mov al, 'р' |
721 | jmp .doit |
||
87 | mario79 | 722 | .yo2: |
585 | mario79 | 723 | mov al, 'с' |
724 | jmp .doit |
||
87 | mario79 | 725 | .rus1: |
726 | ; 0x410-0x43F -> 0x80-0xAF |
||
585 | mario79 | 727 | add al, 0x70 |
728 | jmp .doit |
||
87 | mario79 | 729 | .rus2: |
730 | ; 0x440-0x44F -> 0xE0-0xEF |
||
585 | mario79 | 731 | add al, 0xA0 |
87 | mario79 | 732 | .ascii: |
733 | .doit: |
||
585 | mario79 | 734 | ret |