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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 | |
593 | mikedld | 8 | $Revision: 983 $ |
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 |
||
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 |
||
486 | mov ebp, [cd_current_pointer_of_input] |
||
487 | add ebp, 33 |
||
488 | call cd_get_parameters_of_file_1 |
||
489 | pop ebp |
||
490 | and dword [edi+4], 0 |
||
491 | pop edi |
||
492 | xor eax, eax |
||
493 | ret |
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90 | mario79 | 494 | |
628 | mario79 | 495 | ;---------------------------------------------------------------- |
87 | mario79 | 496 | cd_find_lfn: |
758 | mario79 | 497 | mov [cd_appl_data],0 |
521 | diamond | 498 | ; in: esi+ebp -> name |
87 | mario79 | 499 | ; out: CF=1 - file not found |
758 | mario79 | 500 | ; else CF=0 and [cd_current_pointer_of_input] direntry |
585 | mario79 | 501 | push eax esi |
87 | mario79 | 502 | ; 16 сектор начало набора дескрипторов томов |
758 | mario79 | 503 | |
504 | call WaitUnitReady |
||
505 | cmp [DevErrorCode],0 |
||
506 | jne .access_denied |
||
507 | |||
508 | call prevent_medium_removal |
||
509 | ; тестовое чтение |
||
510 | mov [CDSectorAddress],dword 16 |
||
800 | diamond | 511 | mov [CDDataBuf_pointer],CDDataBuf |
758 | mario79 | 512 | call ReadCDWRetr ;_1 |
513 | cmp [DevErrorCode],0 |
||
514 | jne .access_denied |
||
515 | |||
516 | ; вычисление последней сессии |
||
517 | call WaitUnitReady |
||
518 | cmp [DevErrorCode],0 |
||
519 | jne .access_denied |
||
520 | call Read_TOC |
||
521 | mov ah,[CDDataBuf+4+4] |
||
522 | mov al,[CDDataBuf+4+5] |
||
523 | shl eax,16 |
||
524 | mov ah,[CDDataBuf+4+6] |
||
525 | mov al,[CDDataBuf+4+7] |
||
526 | add eax,15 |
||
527 | mov [CDSectorAddress],eax |
||
528 | ; mov [CDSectorAddress],dword 15 |
||
529 | mov [CDDataBuf_pointer],CDDataBuf |
||
530 | |||
87 | mario79 | 531 | .start: |
585 | mario79 | 532 | inc dword [CDSectorAddress] |
758 | mario79 | 533 | call ReadCDWRetr ;_1 |
534 | cmp [DevErrorCode],0 |
||
535 | jne .access_denied |
||
536 | |||
537 | .start_check: |
||
87 | mario79 | 538 | ; проверка на вшивость |
585 | mario79 | 539 | cmp [CDDataBuf+1],dword 'CD00' |
540 | jne .access_denied |
||
541 | cmp [CDDataBuf+5],byte '1' |
||
542 | jne .access_denied |
||
87 | mario79 | 543 | ; сектор является терминатором набор дескрипторов томов? |
585 | mario79 | 544 | cmp [CDDataBuf],byte 0xff |
545 | je .access_denied |
||
87 | mario79 | 546 | ; сектор является дополнительным и улучшенным дескриптором тома? |
585 | mario79 | 547 | cmp [CDDataBuf],byte 0x2 |
548 | jne .start |
||
87 | mario79 | 549 | ; сектор является дополнительным дескриптором тома? |
585 | mario79 | 550 | cmp [CDDataBuf+6],byte 0x1 |
551 | jne .start |
||
758 | mario79 | 552 | |
87 | mario79 | 553 | ; параметры root директрории |
585 | mario79 | 554 | mov eax,[CDDataBuf+0x9c+2] ; начало root директрории |
555 | mov [CDSectorAddress],eax |
||
556 | mov eax,[CDDataBuf+0x9c+10] ; размер root директрории |
||
557 | cmp byte [esi], 0 |
||
558 | jnz @f |
||
559 | mov [cd_current_pointer_of_input],CDDataBuf+0x9c |
||
560 | jmp .done |
||
87 | mario79 | 561 | @@: |
562 | ; начинаем поиск |
||
563 | .mainloop: |
||
585 | mario79 | 564 | dec dword [CDSectorAddress] |
87 | mario79 | 565 | .read_to_buffer: |
585 | mario79 | 566 | inc dword [CDSectorAddress] |
567 | mov [CDDataBuf_pointer],CDDataBuf |
||
568 | call ReadCDWRetr ; читаем сектор директории |
||
569 | cmp [DevErrorCode],0 |
||
570 | jne .access_denied |
||
571 | push ebp |
||
572 | call cd_find_name_in_buffer |
||
573 | pop ebp |
||
574 | jnc .found |
||
575 | sub eax,2048 |
||
87 | mario79 | 576 | ; директория закончилась? |
585 | mario79 | 577 | cmp eax,0 |
578 | ja .read_to_buffer |
||
87 | mario79 | 579 | ; нет искомого элемента цепочки |
580 | .access_denied: |
||
585 | mario79 | 581 | pop esi eax |
582 | mov [cd_appl_data],1 |
||
583 | stc |
||
584 | ret |
||
87 | mario79 | 585 | ; искомый элемент цепочки найден |
586 | .found: |
||
587 | ; конец пути файла |
||
585 | mario79 | 588 | cmp byte [esi-1], 0 |
589 | jz .done |
||
521 | diamond | 590 | .nested: |
585 | mario79 | 591 | mov eax,[cd_current_pointer_of_input] |
592 | push dword [eax+2] |
||
593 | pop dword [CDSectorAddress] ; начало директории |
||
594 | mov eax,[eax+2+8] ; размер директории |
||
595 | jmp .mainloop |
||
87 | mario79 | 596 | ; указатель файла найден |
597 | .done: |
||
585 | mario79 | 598 | test ebp, ebp |
599 | jz @f |
||
600 | mov esi, ebp |
||
601 | xor ebp, ebp |
||
602 | jmp .nested |
||
521 | diamond | 603 | @@: |
585 | mario79 | 604 | pop esi eax |
605 | mov [cd_appl_data],1 |
||
606 | clc |
||
607 | ret |
||
379 | serge | 608 | |
87 | mario79 | 609 | cd_find_name_in_buffer: |
585 | mario79 | 610 | mov [cd_current_pointer_of_input_2],CDDataBuf |
87 | mario79 | 611 | .start: |
585 | mario79 | 612 | call cd_get_name |
613 | jc .not_found |
||
614 | call cd_compare_name |
||
615 | jc .start |
||
379 | serge | 616 | .found: |
585 | mario79 | 617 | clc |
618 | ret |
||
87 | mario79 | 619 | .not_found: |
585 | mario79 | 620 | stc |
621 | ret |
||
87 | mario79 | 622 | |
623 | cd_get_name: |
||
585 | mario79 | 624 | push eax |
625 | mov ebp,[cd_current_pointer_of_input_2] |
||
626 | mov [cd_current_pointer_of_input],ebp |
||
627 | mov eax,[ebp] |
||
628 | cmp eax,0 ; входы закончились? |
||
629 | je .next_sector |
||
630 | cmp ebp,CDDataBuf+2048 ; буфер закончился? |
||
631 | jae .next_sector |
||
632 | movzx eax, byte [ebp] |
||
633 | add [cd_current_pointer_of_input_2],eax ; следующий вход каталога |
||
634 | add ebp,33 ; указатель установлен на начало имени |
||
635 | pop eax |
||
636 | clc |
||
637 | ret |
||
87 | mario79 | 638 | .next_sector: |
585 | mario79 | 639 | pop eax |
640 | stc |
||
641 | ret |
||
87 | mario79 | 642 | |
643 | cd_compare_name: |
||
644 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
||
645 | ; in: esi->name, ebp->name |
||
646 | ; out: if names match: ZF=1 and esi->next component of name |
||
647 | ; else: ZF=0, esi is not changed |
||
648 | ; destroys eax |
||
379 | serge | 649 | push esi eax edi |
87 | mario79 | 650 | mov edi,ebp |
651 | .loop: |
||
652 | cld |
||
653 | lodsb |
||
536 | diamond | 654 | push eax |
99 | mario79 | 655 | call char_todown |
87 | mario79 | 656 | call ansi2uni_char |
657 | xchg ah,al |
||
658 | scasw |
||
536 | diamond | 659 | pop eax |
585 | mario79 | 660 | je .coincides |
99 | mario79 | 661 | call char_toupper |
87 | mario79 | 662 | call ansi2uni_char |
663 | xchg ah,al |
||
664 | sub edi,2 |
||
665 | scasw |
||
666 | jne .name_not_coincide |
||
667 | .coincides: |
||
668 | cmp [esi],byte '/' ; разделитель пути, конец имени текущего элемента |
||
585 | mario79 | 669 | je .done |
670 | cmp [esi],byte 0 ; разделитель пути, конец имени текущего элемента |
||
671 | je .done |
||
87 | mario79 | 672 | jmp .loop |
673 | .name_not_coincide: |
||
674 | pop edi eax esi |
||
675 | stc |
||
676 | ret |
||
677 | .done: |
||
678 | ; проверка конца файла |
||
679 | cmp [edi],word 3B00h ; сепаратор конца файла ';' |
||
585 | mario79 | 680 | je .done_1 |
87 | mario79 | 681 | ; проверка для файлов не заканчивающихся сепаратором |
682 | movzx eax,byte [ebp-33] |
||
683 | add eax,ebp |
||
684 | sub eax,34 |
||
685 | cmp edi,eax |
||
585 | mario79 | 686 | je .done_1 |
87 | mario79 | 687 | ; проверка конца папки |
688 | movzx eax,byte [ebp-1] |
||
689 | add eax,ebp |
||
690 | cmp edi,eax |
||
691 | jne .name_not_coincide |
||
692 | .done_1: |
||
693 | pop edi eax |
||
694 | add esp,4 |
||
695 | inc esi |
||
696 | clc |
||
697 | ret |
||
379 | serge | 698 | |
87 | mario79 | 699 | char_todown: |
700 | ; convert character to uppercase, using cp866 encoding |
||
701 | ; in: al=symbol |
||
702 | ; out: al=converted symbol |
||
585 | mario79 | 703 | cmp al, 'A' |
704 | jb .ret |
||
705 | cmp al, 'Z' |
||
706 | jbe .az |
||
707 | cmp al, 'Ђ' |
||
708 | jb .ret |
||
709 | cmp al, 'ђ' |
||
710 | jb .rus1 |
||
711 | cmp al, 'џ' |
||
712 | ja .ret |
||
87 | mario79 | 713 | ; 0x90-0x9F -> 0xE0-0xEF |
585 | mario79 | 714 | add al, 'а'-'ђ' |
87 | mario79 | 715 | .ret: |
585 | mario79 | 716 | ret |
87 | mario79 | 717 | .rus1: |
718 | ; 0x80-0x8F -> 0xA0-0xAF |
||
719 | .az: |
||
585 | mario79 | 720 | add al, 0x20 |
721 | ret |
||
379 | serge | 722 | |
87 | mario79 | 723 | uni2ansi_char: |
724 | ; convert UNICODE character in al to ANSI character in ax, using cp866 encoding |
||
725 | ; in: ax=UNICODE character |
||
726 | ; out: al=converted ANSI character |
||
585 | mario79 | 727 | cmp ax, 0x80 |
728 | jb .ascii |
||
729 | cmp ax, 0x401 |
||
730 | jz .yo1 |
||
731 | cmp ax, 0x451 |
||
732 | jz .yo2 |
||
733 | cmp ax, 0x410 |
||
734 | jb .unk |
||
735 | cmp ax, 0x440 |
||
736 | jb .rus1 |
||
737 | cmp ax, 0x450 |
||
738 | jb .rus2 |
||
87 | mario79 | 739 | .unk: |
585 | mario79 | 740 | mov al, '_' |
741 | jmp .doit |
||
87 | mario79 | 742 | .yo1: |
585 | mario79 | 743 | mov al, 'р' |
744 | jmp .doit |
||
87 | mario79 | 745 | .yo2: |
585 | mario79 | 746 | mov al, 'с' |
747 | jmp .doit |
||
87 | mario79 | 748 | .rus1: |
749 | ; 0x410-0x43F -> 0x80-0xAF |
||
585 | mario79 | 750 | add al, 0x70 |
751 | jmp .doit |
||
87 | mario79 | 752 | .rus2: |
753 | ; 0x440-0x44F -> 0xE0-0xEF |
||
585 | mario79 | 754 | add al, 0xA0 |
87 | mario79 | 755 | .ascii: |
756 | .doit: |
||
585 | mario79 | 757 | ret |