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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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983 | diamond | 3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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94 | mario79 | 7 | |
1531 | diamond | 8 | $Revision: 2089 $ |
593 | mikedld | 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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2044 | mikedld | 57 | jmp .IDE_Channel_2 |
95 | mario79 | 58 | .reserve_ok_1: |
59 | mov [IDE_Channel_1],1 |
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2044 | mikedld | 60 | sti |
95 | mario79 | 61 | ret |
62 | .reserve_ok_2: |
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63 | mov [IDE_Channel_2],1 |
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2044 | mikedld | 64 | sti |
95 | mario79 | 65 | ret |
66 | |||
67 | free_cd_channel: |
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68 | cmp [ChannelNumber],1 |
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69 | jne .IDE_Channel_2 |
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70 | .IDE_Channel_1: |
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379 | serge | 71 | mov [IDE_Channel_1],0 |
2089 | serge | 72 | sti |
95 | mario79 | 73 | ret |
74 | .IDE_Channel_2: |
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75 | mov [IDE_Channel_2],0 |
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2089 | serge | 76 | sti |
95 | mario79 | 77 | ret |
364 | diamond | 78 | |
379 | serge | 79 | uglobal |
87 | mario79 | 80 | cd_status dd 0 |
364 | diamond | 81 | endg |
87 | mario79 | 82 | |
83 | ;---------------------------------------------------------------- |
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84 | ; |
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85 | ; fs_CdRead - LFN variant for reading CD disk |
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86 | ; |
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87 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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88 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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89 | ; may be ebx=0 - start from first byte |
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90 | ; ecx number of bytes to read, 0+ |
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91 | ; edx mem location to return data |
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92 | ; |
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93 | ; ret ebx = bytes read or 0xffffffff file not found |
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94 | ; eax = 0 ok read or other = errormsg |
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95 | ; |
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96 | ;-------------------------------------------------------------- |
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97 | fs_CdRead: |
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98 | push edi |
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99 | cmp byte [esi], 0 |
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100 | jnz @f |
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101 | .noaccess: |
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102 | pop edi |
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103 | .noaccess_2: |
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585 | mario79 | 104 | or ebx, -1 |
87 | mario79 | 105 | mov eax, ERROR_ACCESS_DENIED |
106 | ret |
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379 | serge | 107 | |
87 | mario79 | 108 | .noaccess_3: |
109 | pop eax edx ecx edi |
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110 | jmp .noaccess_2 |
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111 | |||
112 | @@: |
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113 | call cd_find_lfn |
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114 | jnc .found |
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115 | pop edi |
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116 | cmp [DevErrorCode],0 |
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117 | jne .noaccess_2 |
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585 | mario79 | 118 | or ebx, -1 |
87 | mario79 | 119 | mov eax, ERROR_FILE_NOT_FOUND |
120 | ret |
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121 | |||
122 | .found: |
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123 | mov edi,[cd_current_pointer_of_input] |
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585 | mario79 | 124 | test byte [edi+25],10b ; do not allow read directories |
87 | mario79 | 125 | jnz .noaccess |
126 | test ebx, ebx |
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585 | mario79 | 127 | jz .l1 |
87 | mario79 | 128 | cmp dword [ebx+4], 0 |
585 | mario79 | 129 | jz @f |
130 | xor ebx, ebx |
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87 | mario79 | 131 | .reteof: |
132 | mov eax, 6 ; end of file |
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133 | pop edi |
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134 | ret |
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135 | @@: |
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136 | mov ebx, [ebx] |
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137 | .l1: |
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585 | mario79 | 138 | push ecx edx |
139 | push 0 |
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140 | mov eax, [edi+10] ; реальный размер файловой секции |
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141 | sub eax, ebx |
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142 | jb .eof |
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143 | cmp eax, ecx |
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144 | jae @f |
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145 | mov ecx, eax |
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146 | mov byte [esp], 6 |
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87 | mario79 | 147 | @@: |
148 | mov eax,[edi+2] |
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149 | mov [CDSectorAddress],eax |
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150 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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151 | .new_sector: |
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152 | test ecx, ecx |
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585 | mario79 | 153 | jz .done |
87 | mario79 | 154 | sub ebx, 2048 |
154 | diamond | 155 | jae .next |
87 | mario79 | 156 | add ebx, 2048 |
157 | jnz .incomplete_sector |
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158 | cmp ecx, 2048 |
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585 | mario79 | 159 | jb .incomplete_sector |
87 | mario79 | 160 | ; we may read and memmove complete sector |
161 | mov [CDDataBuf_pointer],edx |
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585 | mario79 | 162 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 163 | cmp [DevErrorCode],0 |
164 | jne .noaccess_3 |
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165 | add edx, 2048 |
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166 | sub ecx, 2048 |
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154 | diamond | 167 | .next: |
168 | inc dword [CDSectorAddress] |
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87 | mario79 | 169 | jmp .new_sector |
170 | .incomplete_sector: |
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171 | ; we must read and memmove incomplete sector |
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172 | mov [CDDataBuf_pointer],CDDataBuf |
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585 | mario79 | 173 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 174 | cmp [DevErrorCode],0 |
379 | serge | 175 | jne .noaccess_3 |
87 | mario79 | 176 | push ecx |
177 | add ecx, ebx |
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178 | cmp ecx, 2048 |
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179 | jbe @f |
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180 | mov ecx, 2048 |
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181 | @@: |
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182 | sub ecx, ebx |
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183 | push edi esi ecx |
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184 | mov edi,edx |
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585 | mario79 | 185 | lea esi, [CDDataBuf + ebx] |
87 | mario79 | 186 | cld |
187 | rep movsb |
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188 | pop ecx esi edi |
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189 | add edx, ecx |
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190 | sub [esp], ecx |
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191 | pop ecx |
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192 | xor ebx, ebx |
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154 | diamond | 193 | jmp .next |
379 | serge | 194 | |
87 | mario79 | 195 | .done: |
585 | mario79 | 196 | mov ebx, edx |
197 | pop eax edx ecx edi |
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198 | sub ebx, edx |
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199 | ret |
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87 | mario79 | 200 | .eof: |
585 | mario79 | 201 | mov ebx, edx |
202 | pop eax edx ecx |
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203 | sub ebx, edx |
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204 | jmp .reteof |
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87 | mario79 | 205 | |
206 | ;---------------------------------------------------------------- |
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207 | ; |
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208 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
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209 | ; |
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210 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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211 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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212 | ; & flags (bitfields) |
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213 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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214 | ; ecx number of blocks to read, 0+ |
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215 | ; edx mem location to return data |
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216 | ; |
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217 | ; ret ebx = blocks read or 0xffffffff folder not found |
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218 | ; eax = 0 ok read or other = errormsg |
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219 | ; |
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220 | ;-------------------------------------------------------------- |
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221 | fs_CdReadFolder: |
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585 | mario79 | 222 | push edi |
223 | call cd_find_lfn |
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224 | jnc .found |
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225 | pop edi |
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226 | cmp [DevErrorCode], 0 |
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227 | jne .noaccess_1 |
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228 | or ebx, -1 |
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229 | mov eax, ERROR_FILE_NOT_FOUND |
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230 | ret |
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87 | mario79 | 231 | .found: |
585 | mario79 | 232 | mov edi, [cd_current_pointer_of_input] |
233 | test byte [edi+25], 10b ; do not allow read directories |
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234 | jnz .found_dir |
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235 | pop edi |
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87 | mario79 | 236 | .noaccess_1: |
585 | mario79 | 237 | or ebx, -1 |
238 | mov eax, ERROR_ACCESS_DENIED |
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239 | ret |
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87 | mario79 | 240 | .found_dir: |
585 | mario79 | 241 | mov eax, [edi+2] ; eax=cluster |
242 | mov [CDSectorAddress], eax |
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243 | mov eax, [edi+10] ; размер директрории |
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87 | mario79 | 244 | .doit: |
245 | ; init header |
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585 | mario79 | 246 | push eax ecx |
247 | mov edi, edx |
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248 | mov ecx, 32/4 |
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249 | xor eax, eax |
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250 | rep stosd |
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251 | pop ecx eax |
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252 | mov byte [edx], 1 ; version |
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253 | mov [cd_mem_location], edx |
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254 | add [cd_mem_location], 32 |
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87 | mario79 | 255 | ; начинаем переброску БДВК в УСВК |
256 | ;.mainloop: |
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585 | mario79 | 257 | mov [cd_counter_block], dword 0 |
258 | dec dword [CDSectorAddress] |
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259 | push ecx |
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87 | mario79 | 260 | .read_to_buffer: |
585 | mario79 | 261 | inc dword [CDSectorAddress] |
262 | mov [CDDataBuf_pointer], CDDataBuf |
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263 | call ReadCDWRetr ; читаем сектор директории |
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264 | cmp [DevErrorCode], 0 |
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265 | jne .noaccess_1 |
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266 | call .get_names_from_buffer |
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267 | sub eax,2048 |
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87 | mario79 | 268 | ; директория закончилась? |
585 | mario79 | 269 | ja .read_to_buffer |
270 | mov edi, [cd_counter_block] |
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271 | mov [edx+8], edi |
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272 | mov edi, [ebx] |
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273 | sub [edx+4], edi |
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274 | xor eax, eax |
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275 | dec ecx |
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276 | js @f |
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277 | mov al, ERROR_END_OF_FILE |
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364 | diamond | 278 | @@: |
585 | mario79 | 279 | pop ecx edi |
280 | mov ebx, [edx+4] |
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281 | ret |
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364 | diamond | 282 | |
87 | mario79 | 283 | .get_names_from_buffer: |
284 | mov [cd_current_pointer_of_input_2],CDDataBuf |
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285 | push eax esi edi edx |
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286 | .get_names_from_buffer_1: |
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287 | call cd_get_name |
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585 | mario79 | 288 | jc .end_buffer |
87 | mario79 | 289 | inc dword [cd_counter_block] |
290 | mov eax,[cd_counter_block] |
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291 | cmp [ebx],eax |
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292 | jae .get_names_from_buffer_1 |
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293 | test ecx, ecx |
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585 | mario79 | 294 | jz .get_names_from_buffer_1 |
87 | mario79 | 295 | mov edi,[cd_counter_block] |
379 | serge | 296 | mov [edx+4],edi |
87 | mario79 | 297 | dec ecx |
298 | mov esi,ebp |
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299 | mov edi,[cd_mem_location] |
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300 | add edi,40 |
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301 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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302 | jnz .unicode |
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303 | ; jmp .unicode |
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304 | .ansi: |
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305 | cmp [cd_counter_block],2 |
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306 | jbe .ansi_parent_directory |
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307 | cld |
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308 | lodsw |
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309 | xchg ah,al |
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310 | call uni2ansi_char |
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311 | cld |
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312 | stosb |
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313 | ; проверка конца файла |
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96 | mario79 | 314 | mov ax,[esi] |
315 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 316 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 317 | ; проверка для файлов не заканчивающихся сепаратором |
318 | movzx eax,byte [ebp-33] |
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319 | add eax,ebp |
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320 | sub eax,34 |
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321 | cmp esi,eax |
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585 | mario79 | 322 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 323 | ; проверка конца папки |
324 | movzx eax,byte [ebp-1] |
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325 | add eax,ebp |
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326 | cmp esi,eax |
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585 | mario79 | 327 | jb .ansi |
87 | mario79 | 328 | .cd_get_parameters_of_file_1: |
329 | mov [edi],byte 0 |
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90 | mario79 | 330 | call cd_get_parameters_of_file |
87 | mario79 | 331 | add [cd_mem_location],304 |
332 | jmp .get_names_from_buffer_1 |
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333 | |||
334 | .ansi_parent_directory: |
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335 | cmp [cd_counter_block],2 |
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585 | mario79 | 336 | je @f |
87 | mario79 | 337 | mov [edi],byte '.' |
338 | inc edi |
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339 | jmp .cd_get_parameters_of_file_1 |
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340 | @@: |
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341 | mov [edi],word '..' |
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342 | add edi,2 |
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343 | jmp .cd_get_parameters_of_file_1 |
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344 | |||
345 | .unicode: |
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346 | cmp [cd_counter_block],2 |
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347 | jbe .unicode_parent_directory |
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348 | cld |
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349 | movsw |
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350 | ; проверка конца файла |
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351 | mov ax,[esi] |
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352 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 353 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 354 | ; проверка для файлов не заканчивающихся сепаратором |
355 | movzx eax,byte [ebp-33] |
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356 | add eax,ebp |
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357 | sub eax,34 |
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358 | cmp esi,eax |
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585 | mario79 | 359 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 360 | ; проверка конца папки |
361 | movzx eax,byte [ebp-1] |
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362 | add eax,ebp |
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363 | cmp esi,eax |
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585 | mario79 | 364 | jb .unicode |
87 | mario79 | 365 | .cd_get_parameters_of_file_2: |
366 | mov [edi],word 0 |
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90 | mario79 | 367 | call cd_get_parameters_of_file |
87 | mario79 | 368 | add [cd_mem_location],560 |
369 | jmp .get_names_from_buffer_1 |
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370 | |||
371 | .unicode_parent_directory: |
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372 | cmp [cd_counter_block],2 |
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585 | mario79 | 373 | je @f |
87 | mario79 | 374 | mov [edi],word 2E00h ; '.' |
375 | add edi,2 |
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376 | jmp .cd_get_parameters_of_file_2 |
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377 | @@: |
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378 | mov [edi],dword 2E002E00h ; '..' |
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379 | add edi,4 |
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380 | jmp .cd_get_parameters_of_file_2 |
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381 | |||
90 | mario79 | 382 | .end_buffer: |
383 | pop edx edi esi eax |
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384 | ret |
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385 | |||
386 | cd_get_parameters_of_file: |
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87 | mario79 | 387 | mov edi,[cd_mem_location] |
90 | mario79 | 388 | cd_get_parameters_of_file_1: |
87 | mario79 | 389 | ; получаем атрибуты файла |
390 | xor eax,eax |
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536 | diamond | 391 | ; файл не архивировался |
392 | inc eax |
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87 | mario79 | 393 | shl eax,1 |
394 | ; это каталог? |
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395 | test [ebp-8],byte 2 |
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585 | mario79 | 396 | jz .file |
536 | diamond | 397 | inc eax |
87 | mario79 | 398 | .file: |
399 | ; метка тома не как в FAT, в этом виде отсутсвует |
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400 | ; файл не является системным |
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401 | shl eax,3 |
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402 | ; файл является скрытым? (атрибут существование) |
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403 | test [ebp-8],byte 1 |
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585 | mario79 | 404 | jz .hidden |
536 | diamond | 405 | inc eax |
87 | mario79 | 406 | .hidden: |
407 | shl eax,1 |
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408 | ; файл всегда только для чтения, так как это CD |
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536 | diamond | 409 | inc eax |
87 | mario79 | 410 | mov [edi],eax |
411 | ; получаем время для файла |
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412 | ;час |
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413 | movzx eax,byte [ebp-12] |
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414 | shl eax,8 |
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415 | ;минута |
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416 | mov al,[ebp-11] |
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417 | shl eax,8 |
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418 | ;секунда |
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419 | mov al,[ebp-10] |
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420 | ;время создания файла |
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421 | mov [edi+8],eax |
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422 | ;время последнего доступа |
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423 | mov [edi+16],eax |
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424 | ;время последней записи |
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425 | mov [edi+24],eax |
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426 | ; получаем дату для файла |
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427 | ;год |
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428 | movzx eax,byte [ebp-15] |
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429 | add eax,1900 |
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430 | shl eax,8 |
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431 | ;месяц |
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432 | mov al,[ebp-14] |
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433 | shl eax,8 |
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434 | ;день |
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435 | mov al,[ebp-13] |
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436 | ;дата создания файла |
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437 | mov [edi+12],eax |
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438 | ;время последнего доступа |
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439 | mov [edi+20],eax |
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440 | ;время последней записи |
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441 | mov [edi+28],eax |
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442 | ; получаем тип данных имени |
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443 | xor eax,eax |
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444 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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445 | jnz .unicode_1 |
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446 | mov [edi+4],eax |
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447 | jmp @f |
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448 | .unicode_1: |
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449 | inc eax |
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450 | mov [edi+4],eax |
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451 | @@: |
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452 | ; получаем размер файла в байтах |
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453 | xor eax,eax |
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454 | mov [edi+32+4],eax |
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455 | mov eax,[ebp-23] |
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456 | mov [edi+32],eax |
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457 | ret |
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458 | |||
90 | mario79 | 459 | ;---------------------------------------------------------------- |
460 | ; |
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461 | ; fs_CdGetFileInfo - LFN variant for CD |
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462 | ; get file/directory attributes structure |
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379 | serge | 463 | ; |
90 | mario79 | 464 | ;---------------------------------------------------------------- |
465 | fs_CdGetFileInfo: |
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585 | mario79 | 466 | cmp byte [esi], 0 |
467 | jnz @f |
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468 | mov eax, 2 |
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469 | ret |
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90 | mario79 | 470 | @@: |
585 | mario79 | 471 | push edi |
472 | call cd_find_lfn |
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473 | pushfd |
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474 | cmp [DevErrorCode], 0 |
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475 | jz @f |
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476 | popfd |
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477 | pop edi |
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478 | mov eax, 11 |
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479 | ret |
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90 | mario79 | 480 | @@: |
585 | mario79 | 481 | popfd |
482 | jnc @f |
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483 | pop edi |
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484 | mov eax, ERROR_FILE_NOT_FOUND |
||
485 | ret |
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90 | mario79 | 486 | @@: |
487 | |||
585 | mario79 | 488 | mov edi, edx |
489 | push ebp |
||
490 | mov ebp, [cd_current_pointer_of_input] |
||
491 | add ebp, 33 |
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492 | call cd_get_parameters_of_file_1 |
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493 | pop ebp |
||
494 | and dword [edi+4], 0 |
||
495 | pop edi |
||
496 | xor eax, eax |
||
497 | ret |
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90 | mario79 | 498 | |
628 | mario79 | 499 | ;---------------------------------------------------------------- |
87 | mario79 | 500 | cd_find_lfn: |
758 | mario79 | 501 | mov [cd_appl_data],0 |
521 | diamond | 502 | ; in: esi+ebp -> name |
87 | mario79 | 503 | ; out: CF=1 - file not found |
758 | mario79 | 504 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
585 | mario79 | 505 | push eax esi |
87 | mario79 | 506 | ; 16 сектор начало набора дескрипторов томов |
758 | mario79 | 507 | |
508 | call WaitUnitReady |
||
509 | cmp [DevErrorCode],0 |
||
510 | jne .access_denied |
||
511 | |||
512 | call prevent_medium_removal |
||
513 | ; тестовое чтение |
||
514 | mov [CDSectorAddress],dword 16 |
||
800 | diamond | 515 | mov [CDDataBuf_pointer],CDDataBuf |
758 | mario79 | 516 | call ReadCDWRetr ;_1 |
517 | cmp [DevErrorCode],0 |
||
518 | jne .access_denied |
||
519 | |||
520 | ; вычисление последней сессии |
||
521 | call WaitUnitReady |
||
522 | cmp [DevErrorCode],0 |
||
523 | jne .access_denied |
||
524 | call Read_TOC |
||
525 | mov ah,[CDDataBuf+4+4] |
||
526 | mov al,[CDDataBuf+4+5] |
||
527 | shl eax,16 |
||
528 | mov ah,[CDDataBuf+4+6] |
||
529 | mov al,[CDDataBuf+4+7] |
||
530 | add eax,15 |
||
531 | mov [CDSectorAddress],eax |
||
532 | ; mov [CDSectorAddress],dword 15 |
||
533 | mov [CDDataBuf_pointer],CDDataBuf |
||
534 | |||
87 | mario79 | 535 | .start: |
585 | mario79 | 536 | inc dword [CDSectorAddress] |
758 | mario79 | 537 | call ReadCDWRetr ;_1 |
538 | cmp [DevErrorCode],0 |
||
539 | jne .access_denied |
||
540 | |||
541 | .start_check: |
||
87 | mario79 | 542 | ; проверка на вшивость |
585 | mario79 | 543 | cmp [CDDataBuf+1],dword 'CD00' |
544 | jne .access_denied |
||
545 | cmp [CDDataBuf+5],byte '1' |
||
546 | jne .access_denied |
||
87 | mario79 | 547 | ; сектор является терминатором набор дескрипторов томов? |
585 | mario79 | 548 | cmp [CDDataBuf],byte 0xff |
549 | je .access_denied |
||
87 | mario79 | 550 | ; сектор является дополнительным и улучшенным дескриптором тома? |
585 | mario79 | 551 | cmp [CDDataBuf],byte 0x2 |
552 | jne .start |
||
87 | mario79 | 553 | ; сектор является дополнительным дескриптором тома? |
585 | mario79 | 554 | cmp [CDDataBuf+6],byte 0x1 |
555 | jne .start |
||
758 | mario79 | 556 | |
87 | mario79 | 557 | ; параметры root директрории |
585 | mario79 | 558 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
559 | mov [CDSectorAddress],eax |
||
560 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
561 | cmp byte [esi], 0 |
||
562 | jnz @f |
||
563 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
564 | jmp .done |
||
87 | mario79 | 565 | @@: |
566 | ; начинаем поиск |
||
567 | .mainloop: |
||
585 | mario79 | 568 | dec dword [CDSectorAddress] |
87 | mario79 | 569 | .read_to_buffer: |
585 | mario79 | 570 | inc dword [CDSectorAddress] |
571 | mov [CDDataBuf_pointer],CDDataBuf |
||
572 | call ReadCDWRetr ; читаем сектор директории |
||
573 | cmp [DevErrorCode],0 |
||
574 | jne .access_denied |
||
575 | push ebp |
||
576 | call cd_find_name_in_buffer |
||
577 | pop ebp |
||
578 | jnc .found |
||
579 | sub eax,2048 |
||
87 | mario79 | 580 | ; директория закончилась? |
585 | mario79 | 581 | cmp eax,0 |
582 | ja .read_to_buffer |
||
87 | mario79 | 583 | ; нет искомого элемента цепочки |
584 | .access_denied: |
||
585 | mario79 | 585 | pop esi eax |
586 | mov [cd_appl_data],1 |
||
587 | stc |
||
588 | ret |
||
87 | mario79 | 589 | ; искомый элемент цепочки найден |
590 | .found: |
||
591 | ; конец пути файла |
||
585 | mario79 | 592 | cmp byte [esi-1], 0 |
593 | jz .done |
||
521 | diamond | 594 | .nested: |
585 | mario79 | 595 | mov eax,[cd_current_pointer_of_input] |
596 | push dword [eax+2] |
||
597 | pop dword [CDSectorAddress] ; начало директории |
||
598 | mov eax,[eax+2+8] ; размер директории |
||
599 | jmp .mainloop |
||
87 | mario79 | 600 | ; указатель файла найден |
601 | .done: |
||
585 | mario79 | 602 | test ebp, ebp |
603 | jz @f |
||
604 | mov esi, ebp |
||
605 | xor ebp, ebp |
||
606 | jmp .nested |
||
521 | diamond | 607 | @@: |
585 | mario79 | 608 | pop esi eax |
609 | mov [cd_appl_data],1 |
||
610 | clc |
||
611 | ret |
||
379 | serge | 612 | |
87 | mario79 | 613 | cd_find_name_in_buffer: |
585 | mario79 | 614 | mov [cd_current_pointer_of_input_2],CDDataBuf |
87 | mario79 | 615 | .start: |
585 | mario79 | 616 | call cd_get_name |
617 | jc .not_found |
||
618 | call cd_compare_name |
||
619 | jc .start |
||
379 | serge | 620 | .found: |
585 | mario79 | 621 | clc |
622 | ret |
||
87 | mario79 | 623 | .not_found: |
585 | mario79 | 624 | stc |
625 | ret |
||
87 | mario79 | 626 | |
627 | cd_get_name: |
||
585 | mario79 | 628 | push eax |
629 | mov ebp,[cd_current_pointer_of_input_2] |
||
630 | mov [cd_current_pointer_of_input],ebp |
||
631 | mov eax,[ebp] |
||
1322 | Lrz | 632 | test eax,eax ; входы закончились? |
633 | jz .next_sector |
||
585 | mario79 | 634 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
635 | jae .next_sector |
||
636 | movzx eax, byte [ebp] |
||
637 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
638 | add ebp,33 ; указатель установлен на начало имени |
||
639 | pop eax |
||
640 | clc |
||
641 | ret |
||
87 | mario79 | 642 | .next_sector: |
585 | mario79 | 643 | pop eax |
644 | stc |
||
645 | ret |
||
87 | mario79 | 646 | |
647 | cd_compare_name: |
||
648 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
649 | ; in: esi->name, ebp->name |
||
650 | ; out: if names match: ZF=1 and esi->next component of name |
||
651 | ; else: ZF=0, esi is not changed |
||
652 | ; destroys eax |
||
379 | serge | 653 | push esi eax edi |
87 | mario79 | 654 | mov edi,ebp |
655 | .loop: |
||
656 | cld |
||
657 | lodsb |
||
536 | diamond | 658 | push eax |
99 | mario79 | 659 | call char_todown |
87 | mario79 | 660 | call ansi2uni_char |
661 | xchg ah,al |
||
662 | scasw |
||
536 | diamond | 663 | pop eax |
585 | mario79 | 664 | je .coincides |
99 | mario79 | 665 | call char_toupper |
87 | mario79 | 666 | call ansi2uni_char |
667 | xchg ah,al |
||
668 | sub edi,2 |
||
669 | scasw |
||
670 | jne .name_not_coincide |
||
671 | .coincides: |
||
672 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
585 | mario79 | 673 | je .done |
674 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
675 | je .done |
||
87 | mario79 | 676 | jmp .loop |
677 | .name_not_coincide: |
||
678 | pop edi eax esi |
||
679 | stc |
||
680 | ret |
||
681 | .done: |
||
682 | ; проверка конца файла |
||
683 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
585 | mario79 | 684 | je .done_1 |
87 | mario79 | 685 | ; проверка для файлов не заканчивающихся сепаратором |
686 | movzx eax,byte [ebp-33] |
||
687 | add eax,ebp |
||
688 | sub eax,34 |
||
689 | cmp edi,eax |
||
585 | mario79 | 690 | je .done_1 |
87 | mario79 | 691 | ; проверка конца папки |
692 | movzx eax,byte [ebp-1] |
||
693 | add eax,ebp |
||
694 | cmp edi,eax |
||
695 | jne .name_not_coincide |
||
696 | .done_1: |
||
697 | pop edi eax |
||
698 | add esp,4 |
||
699 | inc esi |
||
700 | clc |
||
701 | ret |
||
379 | serge | 702 | |
87 | mario79 | 703 | char_todown: |
704 | ; convert character to uppercase, using cp866 encoding |
||
705 | ; in: al=symbol |
||
706 | ; out: al=converted symbol |
||
585 | mario79 | 707 | cmp al, 'A' |
708 | jb .ret |
||
709 | cmp al, 'Z' |
||
710 | jbe .az |
||
711 | cmp al, 'Ђ' |
||
712 | jb .ret |
||
713 | cmp al, 'ђ' |
||
714 | jb .rus1 |
||
715 | cmp al, 'џ' |
||
716 | ja .ret |
||
87 | mario79 | 717 | ; 0x90-0x9F -> 0xE0-0xEF |
585 | mario79 | 718 | add al, 'а'-'ђ' |
87 | mario79 | 719 | .ret: |
585 | mario79 | 720 | ret |
87 | mario79 | 721 | .rus1: |
722 | ; 0x80-0x8F -> 0xA0-0xAF |
||
723 | .az: |
||
585 | mario79 | 724 | add al, 0x20 |
725 | ret |
||
379 | serge | 726 | |
87 | mario79 | 727 | uni2ansi_char: |
728 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
729 | ; in: ax=UNICODE character |
||
730 | ; out: al=converted ANSI character |
||
585 | mario79 | 731 | cmp ax, 0x80 |
732 | jb .ascii |
||
733 | cmp ax, 0x401 |
||
734 | jz .yo1 |
||
735 | cmp ax, 0x451 |
||
736 | jz .yo2 |
||
737 | cmp ax, 0x410 |
||
738 | jb .unk |
||
739 | cmp ax, 0x440 |
||
740 | jb .rus1 |
||
741 | cmp ax, 0x450 |
||
742 | jb .rus2 |
||
87 | mario79 | 743 | .unk: |
585 | mario79 | 744 | mov al, '_' |
745 | jmp .doit |
||
87 | mario79 | 746 | .yo1: |
585 | mario79 | 747 | mov al, 'р' |
748 | jmp .doit |
||
87 | mario79 | 749 | .yo2: |
585 | mario79 | 750 | mov al, 'с' |
751 | jmp .doit |
||
87 | mario79 | 752 | .rus1: |
753 | ; 0x410-0x43F -> 0x80-0xAF |
||
585 | mario79 | 754 | add al, 0x70 |
755 | jmp .doit |
||
87 | mario79 | 756 | .rus2: |
757 | ; 0x440-0x44F -> 0xE0-0xEF |
||
585 | mario79 | 758 | add al, 0xA0 |
87 | mario79 | 759 | .ascii: |
760 | .doit: |
||
585 | mario79 | 761 | ret |