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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: 2010 $ |
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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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 |
2010 | serge | 70 | sti |
95 | mario79 | 71 | ret |
72 | .IDE_Channel_2: |
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73 | mov [IDE_Channel_2],0 |
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2010 | serge | 74 | sti |
95 | mario79 | 75 | ret |
364 | diamond | 76 | |
379 | serge | 77 | uglobal |
87 | mario79 | 78 | cd_status dd 0 |
364 | diamond | 79 | endg |
87 | mario79 | 80 | |
81 | ;---------------------------------------------------------------- |
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82 | ; |
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83 | ; fs_CdRead - LFN variant for reading CD disk |
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84 | ; |
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85 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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86 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
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87 | ; may be ebx=0 - start from first byte |
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88 | ; ecx number of bytes to read, 0+ |
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89 | ; edx mem location to return data |
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90 | ; |
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91 | ; ret ebx = bytes read or 0xffffffff file not found |
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92 | ; eax = 0 ok read or other = errormsg |
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93 | ; |
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94 | ;-------------------------------------------------------------- |
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95 | fs_CdRead: |
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96 | push edi |
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97 | cmp byte [esi], 0 |
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98 | jnz @f |
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99 | .noaccess: |
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100 | pop edi |
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101 | .noaccess_2: |
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585 | mario79 | 102 | or ebx, -1 |
87 | mario79 | 103 | mov eax, ERROR_ACCESS_DENIED |
104 | ret |
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379 | serge | 105 | |
87 | mario79 | 106 | .noaccess_3: |
107 | pop eax edx ecx edi |
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108 | jmp .noaccess_2 |
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109 | |||
110 | @@: |
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111 | call cd_find_lfn |
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112 | jnc .found |
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113 | pop edi |
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114 | cmp [DevErrorCode],0 |
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115 | jne .noaccess_2 |
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585 | mario79 | 116 | or ebx, -1 |
87 | mario79 | 117 | mov eax, ERROR_FILE_NOT_FOUND |
118 | ret |
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119 | |||
120 | .found: |
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121 | mov edi,[cd_current_pointer_of_input] |
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585 | mario79 | 122 | test byte [edi+25],10b ; do not allow read directories |
87 | mario79 | 123 | jnz .noaccess |
124 | test ebx, ebx |
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585 | mario79 | 125 | jz .l1 |
87 | mario79 | 126 | cmp dword [ebx+4], 0 |
585 | mario79 | 127 | jz @f |
128 | xor ebx, ebx |
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87 | mario79 | 129 | .reteof: |
130 | mov eax, 6 ; end of file |
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131 | pop edi |
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132 | ret |
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133 | @@: |
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134 | mov ebx, [ebx] |
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135 | .l1: |
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585 | mario79 | 136 | push ecx edx |
137 | push 0 |
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138 | mov eax, [edi+10] ; реальный размер файловой секции |
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139 | sub eax, ebx |
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140 | jb .eof |
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141 | cmp eax, ecx |
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142 | jae @f |
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143 | mov ecx, eax |
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144 | mov byte [esp], 6 |
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87 | mario79 | 145 | @@: |
146 | mov eax,[edi+2] |
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147 | mov [CDSectorAddress],eax |
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148 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
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149 | .new_sector: |
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150 | test ecx, ecx |
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585 | mario79 | 151 | jz .done |
87 | mario79 | 152 | sub ebx, 2048 |
154 | diamond | 153 | jae .next |
87 | mario79 | 154 | add ebx, 2048 |
155 | jnz .incomplete_sector |
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156 | cmp ecx, 2048 |
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585 | mario79 | 157 | jb .incomplete_sector |
87 | mario79 | 158 | ; we may read and memmove complete sector |
159 | mov [CDDataBuf_pointer],edx |
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585 | mario79 | 160 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 161 | cmp [DevErrorCode],0 |
162 | jne .noaccess_3 |
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163 | add edx, 2048 |
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164 | sub ecx, 2048 |
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154 | diamond | 165 | .next: |
166 | inc dword [CDSectorAddress] |
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87 | mario79 | 167 | jmp .new_sector |
168 | .incomplete_sector: |
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169 | ; we must read and memmove incomplete sector |
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170 | mov [CDDataBuf_pointer],CDDataBuf |
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585 | mario79 | 171 | call ReadCDWRetr ; читаем сектор файла |
87 | mario79 | 172 | cmp [DevErrorCode],0 |
379 | serge | 173 | jne .noaccess_3 |
87 | mario79 | 174 | push ecx |
175 | add ecx, ebx |
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176 | cmp ecx, 2048 |
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177 | jbe @f |
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178 | mov ecx, 2048 |
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179 | @@: |
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180 | sub ecx, ebx |
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181 | push edi esi ecx |
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182 | mov edi,edx |
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585 | mario79 | 183 | lea esi, [CDDataBuf + ebx] |
87 | mario79 | 184 | cld |
185 | rep movsb |
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186 | pop ecx esi edi |
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187 | add edx, ecx |
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188 | sub [esp], ecx |
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189 | pop ecx |
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190 | xor ebx, ebx |
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154 | diamond | 191 | jmp .next |
379 | serge | 192 | |
87 | mario79 | 193 | .done: |
585 | mario79 | 194 | mov ebx, edx |
195 | pop eax edx ecx edi |
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196 | sub ebx, edx |
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197 | ret |
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87 | mario79 | 198 | .eof: |
585 | mario79 | 199 | mov ebx, edx |
200 | pop eax edx ecx |
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201 | sub ebx, edx |
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202 | jmp .reteof |
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87 | mario79 | 203 | |
204 | ;---------------------------------------------------------------- |
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205 | ; |
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206 | ; fs_CdReadFolder - LFN variant for reading CD disk folder |
||
207 | ; |
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208 | ; esi points to filename /dir1/dir2/.../dirn/file,0 |
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209 | ; ebx pointer to structure 32-bit number = first wanted block, 0+ |
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210 | ; & flags (bitfields) |
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211 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
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212 | ; ecx number of blocks to read, 0+ |
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213 | ; edx mem location to return data |
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214 | ; |
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215 | ; ret ebx = blocks read or 0xffffffff folder not found |
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216 | ; eax = 0 ok read or other = errormsg |
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217 | ; |
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218 | ;-------------------------------------------------------------- |
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219 | fs_CdReadFolder: |
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585 | mario79 | 220 | push edi |
221 | call cd_find_lfn |
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222 | jnc .found |
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223 | pop edi |
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224 | cmp [DevErrorCode], 0 |
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225 | jne .noaccess_1 |
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226 | or ebx, -1 |
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227 | mov eax, ERROR_FILE_NOT_FOUND |
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228 | ret |
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87 | mario79 | 229 | .found: |
585 | mario79 | 230 | mov edi, [cd_current_pointer_of_input] |
231 | test byte [edi+25], 10b ; do not allow read directories |
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232 | jnz .found_dir |
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233 | pop edi |
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87 | mario79 | 234 | .noaccess_1: |
585 | mario79 | 235 | or ebx, -1 |
236 | mov eax, ERROR_ACCESS_DENIED |
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237 | ret |
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87 | mario79 | 238 | .found_dir: |
585 | mario79 | 239 | mov eax, [edi+2] ; eax=cluster |
240 | mov [CDSectorAddress], eax |
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241 | mov eax, [edi+10] ; размер директрории |
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87 | mario79 | 242 | .doit: |
243 | ; init header |
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585 | mario79 | 244 | push eax ecx |
245 | mov edi, edx |
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246 | mov ecx, 32/4 |
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247 | xor eax, eax |
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248 | rep stosd |
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249 | pop ecx eax |
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250 | mov byte [edx], 1 ; version |
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251 | mov [cd_mem_location], edx |
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252 | add [cd_mem_location], 32 |
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87 | mario79 | 253 | ; начинаем переброску БДВК в УСВК |
254 | ;.mainloop: |
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585 | mario79 | 255 | mov [cd_counter_block], dword 0 |
256 | dec dword [CDSectorAddress] |
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257 | push ecx |
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87 | mario79 | 258 | .read_to_buffer: |
585 | mario79 | 259 | inc dword [CDSectorAddress] |
260 | mov [CDDataBuf_pointer], CDDataBuf |
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261 | call ReadCDWRetr ; читаем сектор директории |
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262 | cmp [DevErrorCode], 0 |
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263 | jne .noaccess_1 |
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264 | call .get_names_from_buffer |
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265 | sub eax,2048 |
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87 | mario79 | 266 | ; директория закончилась? |
585 | mario79 | 267 | ja .read_to_buffer |
268 | mov edi, [cd_counter_block] |
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269 | mov [edx+8], edi |
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270 | mov edi, [ebx] |
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271 | sub [edx+4], edi |
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272 | xor eax, eax |
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273 | dec ecx |
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274 | js @f |
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275 | mov al, ERROR_END_OF_FILE |
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364 | diamond | 276 | @@: |
585 | mario79 | 277 | pop ecx edi |
278 | mov ebx, [edx+4] |
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279 | ret |
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364 | diamond | 280 | |
87 | mario79 | 281 | .get_names_from_buffer: |
282 | mov [cd_current_pointer_of_input_2],CDDataBuf |
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283 | push eax esi edi edx |
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284 | .get_names_from_buffer_1: |
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285 | call cd_get_name |
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585 | mario79 | 286 | jc .end_buffer |
87 | mario79 | 287 | inc dword [cd_counter_block] |
288 | mov eax,[cd_counter_block] |
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289 | cmp [ebx],eax |
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290 | jae .get_names_from_buffer_1 |
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291 | test ecx, ecx |
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585 | mario79 | 292 | jz .get_names_from_buffer_1 |
87 | mario79 | 293 | mov edi,[cd_counter_block] |
379 | serge | 294 | mov [edx+4],edi |
87 | mario79 | 295 | dec ecx |
296 | mov esi,ebp |
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297 | mov edi,[cd_mem_location] |
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298 | add edi,40 |
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299 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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300 | jnz .unicode |
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301 | ; jmp .unicode |
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302 | .ansi: |
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303 | cmp [cd_counter_block],2 |
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304 | jbe .ansi_parent_directory |
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305 | cld |
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306 | lodsw |
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307 | xchg ah,al |
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308 | call uni2ansi_char |
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309 | cld |
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310 | stosb |
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311 | ; проверка конца файла |
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96 | mario79 | 312 | mov ax,[esi] |
313 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 314 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 315 | ; проверка для файлов не заканчивающихся сепаратором |
316 | movzx eax,byte [ebp-33] |
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317 | add eax,ebp |
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318 | sub eax,34 |
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319 | cmp esi,eax |
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585 | mario79 | 320 | je .cd_get_parameters_of_file_1 |
87 | mario79 | 321 | ; проверка конца папки |
322 | movzx eax,byte [ebp-1] |
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323 | add eax,ebp |
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324 | cmp esi,eax |
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585 | mario79 | 325 | jb .ansi |
87 | mario79 | 326 | .cd_get_parameters_of_file_1: |
327 | mov [edi],byte 0 |
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90 | mario79 | 328 | call cd_get_parameters_of_file |
87 | mario79 | 329 | add [cd_mem_location],304 |
330 | jmp .get_names_from_buffer_1 |
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331 | |||
332 | .ansi_parent_directory: |
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333 | cmp [cd_counter_block],2 |
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585 | mario79 | 334 | je @f |
87 | mario79 | 335 | mov [edi],byte '.' |
336 | inc edi |
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337 | jmp .cd_get_parameters_of_file_1 |
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338 | @@: |
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339 | mov [edi],word '..' |
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340 | add edi,2 |
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341 | jmp .cd_get_parameters_of_file_1 |
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342 | |||
343 | .unicode: |
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344 | cmp [cd_counter_block],2 |
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345 | jbe .unicode_parent_directory |
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346 | cld |
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347 | movsw |
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348 | ; проверка конца файла |
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349 | mov ax,[esi] |
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350 | cmp ax,word 3B00h ; сепаратор конца файла ';' |
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585 | mario79 | 351 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 352 | ; проверка для файлов не заканчивающихся сепаратором |
353 | movzx eax,byte [ebp-33] |
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354 | add eax,ebp |
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355 | sub eax,34 |
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356 | cmp esi,eax |
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585 | mario79 | 357 | je .cd_get_parameters_of_file_2 |
87 | mario79 | 358 | ; проверка конца папки |
359 | movzx eax,byte [ebp-1] |
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360 | add eax,ebp |
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361 | cmp esi,eax |
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585 | mario79 | 362 | jb .unicode |
87 | mario79 | 363 | .cd_get_parameters_of_file_2: |
364 | mov [edi],word 0 |
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90 | mario79 | 365 | call cd_get_parameters_of_file |
87 | mario79 | 366 | add [cd_mem_location],560 |
367 | jmp .get_names_from_buffer_1 |
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368 | |||
369 | .unicode_parent_directory: |
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370 | cmp [cd_counter_block],2 |
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585 | mario79 | 371 | je @f |
87 | mario79 | 372 | mov [edi],word 2E00h ; '.' |
373 | add edi,2 |
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374 | jmp .cd_get_parameters_of_file_2 |
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375 | @@: |
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376 | mov [edi],dword 2E002E00h ; '..' |
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377 | add edi,4 |
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378 | jmp .cd_get_parameters_of_file_2 |
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379 | |||
90 | mario79 | 380 | .end_buffer: |
381 | pop edx edi esi eax |
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382 | ret |
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383 | |||
384 | cd_get_parameters_of_file: |
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87 | mario79 | 385 | mov edi,[cd_mem_location] |
90 | mario79 | 386 | cd_get_parameters_of_file_1: |
87 | mario79 | 387 | ; получаем атрибуты файла |
388 | xor eax,eax |
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536 | diamond | 389 | ; файл не архивировался |
390 | inc eax |
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87 | mario79 | 391 | shl eax,1 |
392 | ; это каталог? |
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393 | test [ebp-8],byte 2 |
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585 | mario79 | 394 | jz .file |
536 | diamond | 395 | inc eax |
87 | mario79 | 396 | .file: |
397 | ; метка тома не как в FAT, в этом виде отсутсвует |
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398 | ; файл не является системным |
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399 | shl eax,3 |
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400 | ; файл является скрытым? (атрибут существование) |
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401 | test [ebp-8],byte 1 |
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585 | mario79 | 402 | jz .hidden |
536 | diamond | 403 | inc eax |
87 | mario79 | 404 | .hidden: |
405 | shl eax,1 |
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406 | ; файл всегда только для чтения, так как это CD |
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536 | diamond | 407 | inc eax |
87 | mario79 | 408 | mov [edi],eax |
409 | ; получаем время для файла |
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410 | ;час |
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411 | movzx eax,byte [ebp-12] |
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412 | shl eax,8 |
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413 | ;минута |
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414 | mov al,[ebp-11] |
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415 | shl eax,8 |
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416 | ;секунда |
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417 | mov al,[ebp-10] |
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418 | ;время создания файла |
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419 | mov [edi+8],eax |
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420 | ;время последнего доступа |
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421 | mov [edi+16],eax |
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422 | ;время последней записи |
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423 | mov [edi+24],eax |
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424 | ; получаем дату для файла |
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425 | ;год |
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426 | movzx eax,byte [ebp-15] |
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427 | add eax,1900 |
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428 | shl eax,8 |
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429 | ;месяц |
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430 | mov al,[ebp-14] |
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431 | shl eax,8 |
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432 | ;день |
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433 | mov al,[ebp-13] |
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434 | ;дата создания файла |
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435 | mov [edi+12],eax |
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436 | ;время последнего доступа |
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437 | mov [edi+20],eax |
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438 | ;время последней записи |
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439 | mov [edi+28],eax |
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440 | ; получаем тип данных имени |
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441 | xor eax,eax |
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442 | test dword [ebx+4], 1 ; 0=ANSI, 1=UNICODE |
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443 | jnz .unicode_1 |
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444 | mov [edi+4],eax |
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445 | jmp @f |
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446 | .unicode_1: |
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447 | inc eax |
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448 | mov [edi+4],eax |
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449 | @@: |
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450 | ; получаем размер файла в байтах |
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451 | xor eax,eax |
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452 | mov [edi+32+4],eax |
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453 | mov eax,[ebp-23] |
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454 | mov [edi+32],eax |
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455 | ret |
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456 | |||
90 | mario79 | 457 | ;---------------------------------------------------------------- |
458 | ; |
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459 | ; fs_CdGetFileInfo - LFN variant for CD |
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460 | ; get file/directory attributes structure |
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379 | serge | 461 | ; |
90 | mario79 | 462 | ;---------------------------------------------------------------- |
463 | fs_CdGetFileInfo: |
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585 | mario79 | 464 | cmp byte [esi], 0 |
465 | jnz @f |
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466 | mov eax, 2 |
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467 | ret |
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90 | mario79 | 468 | @@: |
585 | mario79 | 469 | push edi |
470 | call cd_find_lfn |
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471 | pushfd |
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472 | cmp [DevErrorCode], 0 |
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473 | jz @f |
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474 | popfd |
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475 | pop edi |
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476 | mov eax, 11 |
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477 | ret |
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90 | mario79 | 478 | @@: |
585 | mario79 | 479 | popfd |
480 | jnc @f |
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481 | pop edi |
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482 | mov eax, ERROR_FILE_NOT_FOUND |
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483 | ret |
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90 | mario79 | 484 | @@: |
485 | |||
585 | mario79 | 486 | mov edi, edx |
487 | push ebp |
||
488 | mov ebp, [cd_current_pointer_of_input] |
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489 | add ebp, 33 |
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490 | call cd_get_parameters_of_file_1 |
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491 | pop ebp |
||
492 | and dword [edi+4], 0 |
||
493 | pop edi |
||
494 | xor eax, eax |
||
495 | ret |
||
90 | mario79 | 496 | |
628 | mario79 | 497 | ;---------------------------------------------------------------- |
87 | mario79 | 498 | cd_find_lfn: |
758 | mario79 | 499 | mov [cd_appl_data],0 |
521 | diamond | 500 | ; in: esi+ebp -> name |
87 | mario79 | 501 | ; out: CF=1 - file not found |
758 | mario79 | 502 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
585 | mario79 | 503 | push eax esi |
87 | mario79 | 504 | ; 16 сектор начало набора дескрипторов томов |
758 | mario79 | 505 | |
506 | call WaitUnitReady |
||
507 | cmp [DevErrorCode],0 |
||
508 | jne .access_denied |
||
509 | |||
510 | call prevent_medium_removal |
||
511 | ; тестовое чтение |
||
512 | mov [CDSectorAddress],dword 16 |
||
800 | diamond | 513 | mov [CDDataBuf_pointer],CDDataBuf |
758 | mario79 | 514 | call ReadCDWRetr ;_1 |
515 | cmp [DevErrorCode],0 |
||
516 | jne .access_denied |
||
517 | |||
518 | ; вычисление последней сессии |
||
519 | call WaitUnitReady |
||
520 | cmp [DevErrorCode],0 |
||
521 | jne .access_denied |
||
522 | call Read_TOC |
||
523 | mov ah,[CDDataBuf+4+4] |
||
524 | mov al,[CDDataBuf+4+5] |
||
525 | shl eax,16 |
||
526 | mov ah,[CDDataBuf+4+6] |
||
527 | mov al,[CDDataBuf+4+7] |
||
528 | add eax,15 |
||
529 | mov [CDSectorAddress],eax |
||
530 | ; mov [CDSectorAddress],dword 15 |
||
531 | mov [CDDataBuf_pointer],CDDataBuf |
||
532 | |||
87 | mario79 | 533 | .start: |
585 | mario79 | 534 | inc dword [CDSectorAddress] |
758 | mario79 | 535 | call ReadCDWRetr ;_1 |
536 | cmp [DevErrorCode],0 |
||
537 | jne .access_denied |
||
538 | |||
539 | .start_check: |
||
87 | mario79 | 540 | ; проверка на вшивость |
585 | mario79 | 541 | cmp [CDDataBuf+1],dword 'CD00' |
542 | jne .access_denied |
||
543 | cmp [CDDataBuf+5],byte '1' |
||
544 | jne .access_denied |
||
87 | mario79 | 545 | ; сектор является терминатором набор дескрипторов томов? |
585 | mario79 | 546 | cmp [CDDataBuf],byte 0xff |
547 | je .access_denied |
||
87 | mario79 | 548 | ; сектор является дополнительным и улучшенным дескриптором тома? |
585 | mario79 | 549 | cmp [CDDataBuf],byte 0x2 |
550 | jne .start |
||
87 | mario79 | 551 | ; сектор является дополнительным дескриптором тома? |
585 | mario79 | 552 | cmp [CDDataBuf+6],byte 0x1 |
553 | jne .start |
||
758 | mario79 | 554 | |
87 | mario79 | 555 | ; параметры root директрории |
585 | mario79 | 556 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
557 | mov [CDSectorAddress],eax |
||
558 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
559 | cmp byte [esi], 0 |
||
560 | jnz @f |
||
561 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
562 | jmp .done |
||
87 | mario79 | 563 | @@: |
564 | ; начинаем поиск |
||
565 | .mainloop: |
||
585 | mario79 | 566 | dec dword [CDSectorAddress] |
87 | mario79 | 567 | .read_to_buffer: |
585 | mario79 | 568 | inc dword [CDSectorAddress] |
569 | mov [CDDataBuf_pointer],CDDataBuf |
||
570 | call ReadCDWRetr ; читаем сектор директории |
||
571 | cmp [DevErrorCode],0 |
||
572 | jne .access_denied |
||
573 | push ebp |
||
574 | call cd_find_name_in_buffer |
||
575 | pop ebp |
||
576 | jnc .found |
||
577 | sub eax,2048 |
||
87 | mario79 | 578 | ; директория закончилась? |
585 | mario79 | 579 | cmp eax,0 |
580 | ja .read_to_buffer |
||
87 | mario79 | 581 | ; нет искомого элемента цепочки |
582 | .access_denied: |
||
585 | mario79 | 583 | pop esi eax |
584 | mov [cd_appl_data],1 |
||
585 | stc |
||
586 | ret |
||
87 | mario79 | 587 | ; искомый элемент цепочки найден |
588 | .found: |
||
589 | ; конец пути файла |
||
585 | mario79 | 590 | cmp byte [esi-1], 0 |
591 | jz .done |
||
521 | diamond | 592 | .nested: |
585 | mario79 | 593 | mov eax,[cd_current_pointer_of_input] |
594 | push dword [eax+2] |
||
595 | pop dword [CDSectorAddress] ; начало директории |
||
596 | mov eax,[eax+2+8] ; размер директории |
||
597 | jmp .mainloop |
||
87 | mario79 | 598 | ; указатель файла найден |
599 | .done: |
||
585 | mario79 | 600 | test ebp, ebp |
601 | jz @f |
||
602 | mov esi, ebp |
||
603 | xor ebp, ebp |
||
604 | jmp .nested |
||
521 | diamond | 605 | @@: |
585 | mario79 | 606 | pop esi eax |
607 | mov [cd_appl_data],1 |
||
608 | clc |
||
609 | ret |
||
379 | serge | 610 | |
87 | mario79 | 611 | cd_find_name_in_buffer: |
585 | mario79 | 612 | mov [cd_current_pointer_of_input_2],CDDataBuf |
87 | mario79 | 613 | .start: |
585 | mario79 | 614 | call cd_get_name |
615 | jc .not_found |
||
616 | call cd_compare_name |
||
617 | jc .start |
||
379 | serge | 618 | .found: |
585 | mario79 | 619 | clc |
620 | ret |
||
87 | mario79 | 621 | .not_found: |
585 | mario79 | 622 | stc |
623 | ret |
||
87 | mario79 | 624 | |
625 | cd_get_name: |
||
585 | mario79 | 626 | push eax |
627 | mov ebp,[cd_current_pointer_of_input_2] |
||
628 | mov [cd_current_pointer_of_input],ebp |
||
629 | mov eax,[ebp] |
||
1322 | Lrz | 630 | test eax,eax ; входы закончились? |
631 | jz .next_sector |
||
585 | mario79 | 632 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
633 | jae .next_sector |
||
634 | movzx eax, byte [ebp] |
||
635 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
636 | add ebp,33 ; указатель установлен на начало имени |
||
637 | pop eax |
||
638 | clc |
||
639 | ret |
||
87 | mario79 | 640 | .next_sector: |
585 | mario79 | 641 | pop eax |
642 | stc |
||
643 | ret |
||
87 | mario79 | 644 | |
645 | cd_compare_name: |
||
646 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
647 | ; in: esi->name, ebp->name |
||
648 | ; out: if names match: ZF=1 and esi->next component of name |
||
649 | ; else: ZF=0, esi is not changed |
||
650 | ; destroys eax |
||
379 | serge | 651 | push esi eax edi |
87 | mario79 | 652 | mov edi,ebp |
653 | .loop: |
||
654 | cld |
||
655 | lodsb |
||
536 | diamond | 656 | push eax |
99 | mario79 | 657 | call char_todown |
87 | mario79 | 658 | call ansi2uni_char |
659 | xchg ah,al |
||
660 | scasw |
||
536 | diamond | 661 | pop eax |
585 | mario79 | 662 | je .coincides |
99 | mario79 | 663 | call char_toupper |
87 | mario79 | 664 | call ansi2uni_char |
665 | xchg ah,al |
||
666 | sub edi,2 |
||
667 | scasw |
||
668 | jne .name_not_coincide |
||
669 | .coincides: |
||
670 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
585 | mario79 | 671 | je .done |
672 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
673 | je .done |
||
87 | mario79 | 674 | jmp .loop |
675 | .name_not_coincide: |
||
676 | pop edi eax esi |
||
677 | stc |
||
678 | ret |
||
679 | .done: |
||
680 | ; проверка конца файла |
||
681 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
585 | mario79 | 682 | je .done_1 |
87 | mario79 | 683 | ; проверка для файлов не заканчивающихся сепаратором |
684 | movzx eax,byte [ebp-33] |
||
685 | add eax,ebp |
||
686 | sub eax,34 |
||
687 | cmp edi,eax |
||
585 | mario79 | 688 | je .done_1 |
87 | mario79 | 689 | ; проверка конца папки |
690 | movzx eax,byte [ebp-1] |
||
691 | add eax,ebp |
||
692 | cmp edi,eax |
||
693 | jne .name_not_coincide |
||
694 | .done_1: |
||
695 | pop edi eax |
||
696 | add esp,4 |
||
697 | inc esi |
||
698 | clc |
||
699 | ret |
||
379 | serge | 700 | |
87 | mario79 | 701 | char_todown: |
702 | ; convert character to uppercase, using cp866 encoding |
||
703 | ; in: al=symbol |
||
704 | ; out: al=converted symbol |
||
585 | mario79 | 705 | cmp al, 'A' |
706 | jb .ret |
||
707 | cmp al, 'Z' |
||
708 | jbe .az |
||
709 | cmp al, 'Ђ' |
||
710 | jb .ret |
||
711 | cmp al, 'ђ' |
||
712 | jb .rus1 |
||
713 | cmp al, 'џ' |
||
714 | ja .ret |
||
87 | mario79 | 715 | ; 0x90-0x9F -> 0xE0-0xEF |
585 | mario79 | 716 | add al, 'а'-'ђ' |
87 | mario79 | 717 | .ret: |
585 | mario79 | 718 | ret |
87 | mario79 | 719 | .rus1: |
720 | ; 0x80-0x8F -> 0xA0-0xAF |
||
721 | .az: |
||
585 | mario79 | 722 | add al, 0x20 |
723 | ret |
||
379 | serge | 724 | |
87 | mario79 | 725 | uni2ansi_char: |
726 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
727 | ; in: ax=UNICODE character |
||
728 | ; out: al=converted ANSI character |
||
585 | mario79 | 729 | cmp ax, 0x80 |
730 | jb .ascii |
||
731 | cmp ax, 0x401 |
||
732 | jz .yo1 |
||
733 | cmp ax, 0x451 |
||
734 | jz .yo2 |
||
735 | cmp ax, 0x410 |
||
736 | jb .unk |
||
737 | cmp ax, 0x440 |
||
738 | jb .rus1 |
||
739 | cmp ax, 0x450 |
||
740 | jb .rus2 |
||
87 | mario79 | 741 | .unk: |
585 | mario79 | 742 | mov al, '_' |
743 | jmp .doit |
||
87 | mario79 | 744 | .yo1: |
585 | mario79 | 745 | mov al, 'р' |
746 | jmp .doit |
||
87 | mario79 | 747 | .yo2: |
585 | mario79 | 748 | mov al, 'с' |
749 | jmp .doit |
||
87 | mario79 | 750 | .rus1: |
751 | ; 0x410-0x43F -> 0x80-0xAF |
||
585 | mario79 | 752 | add al, 0x70 |
753 | jmp .doit |
||
87 | mario79 | 754 | .rus2: |
755 | ; 0x440-0x44F -> 0xE0-0xEF |
||
585 | mario79 | 756 | add al, 0xA0 |
87 | mario79 | 757 | .ascii: |
758 | .doit: |
||
585 | mario79 | 759 | ret |