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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. 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: 2465 $ |
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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2434 | Serge | 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 | |||
2434 | Serge | 22 | cli |
23 | cmp [cd_status], 0 |
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24 | je reserve_ok2 |
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87 | mario79 | 25 | |
2434 | Serge | 26 | sti |
27 | call change_task |
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28 | jmp reserve_cd |
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87 | mario79 | 29 | |
30 | reserve_ok2: |
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31 | |||
2434 | Serge | 32 | push eax |
33 | mov eax, [CURRENT_TASK] |
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34 | shl eax, 5 |
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35 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
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36 | mov [cd_status], eax |
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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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2434 | Serge | 42 | cmp [ChannelNumber], 1 |
43 | jne .IDE_Channel_2 |
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95 | mario79 | 44 | .IDE_Channel_1: |
2434 | Serge | 45 | cli |
46 | cmp [IDE_Channel_1], 0 |
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47 | je .reserve_ok_1 |
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48 | sti |
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49 | call change_task |
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50 | jmp .IDE_Channel_1 |
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95 | mario79 | 51 | .IDE_Channel_2: |
2434 | Serge | 52 | cli |
53 | cmp [IDE_Channel_2], 0 |
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54 | je .reserve_ok_2 |
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55 | sti |
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56 | call change_task |
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57 | jmp .IDE_Channel_2 |
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95 | mario79 | 58 | .reserve_ok_1: |
2434 | Serge | 59 | mov [IDE_Channel_1], 1 |
60 | sti |
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61 | ret |
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95 | mario79 | 62 | .reserve_ok_2: |
2434 | Serge | 63 | mov [IDE_Channel_2], 1 |
64 | sti |
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65 | ret |
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95 | mario79 | 66 | |
67 | free_cd_channel: |
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2434 | Serge | 68 | cmp [ChannelNumber], 1 |
69 | jne .IDE_Channel_2 |
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95 | mario79 | 70 | .IDE_Channel_1: |
2434 | Serge | 71 | mov [IDE_Channel_1], 0 |
72 | sti |
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73 | ret |
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95 | mario79 | 74 | .IDE_Channel_2: |
2434 | Serge | 75 | mov [IDE_Channel_2], 0 |
76 | sti |
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77 | ret |
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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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2434 | Serge | 98 | push edi |
99 | cmp byte [esi], 0 |
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100 | jnz @f |
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87 | mario79 | 101 | .noaccess: |
2434 | Serge | 102 | pop edi |
87 | mario79 | 103 | .noaccess_2: |
2434 | Serge | 104 | or ebx, -1 |
105 | mov eax, ERROR_ACCESS_DENIED |
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106 | ret |
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379 | serge | 107 | |
87 | mario79 | 108 | .noaccess_3: |
2434 | Serge | 109 | pop eax edx ecx edi |
110 | jmp .noaccess_2 |
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87 | mario79 | 111 | |
112 | @@: |
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2434 | Serge | 113 | call cd_find_lfn |
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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118 | or ebx, -1 |
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119 | mov eax, ERROR_FILE_NOT_FOUND |
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120 | ret |
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87 | mario79 | 121 | |
122 | .found: |
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2434 | Serge | 123 | mov edi, [cd_current_pointer_of_input] |
124 | test byte [edi+25], 10b; do not allow read directories |
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125 | jnz .noaccess |
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126 | test ebx, ebx |
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127 | jz .l1 |
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128 | cmp dword [ebx+4], 0 |
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129 | jz @f |
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130 | xor ebx, ebx |
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87 | mario79 | 131 | .reteof: |
2434 | Serge | 132 | mov eax, 6; end of file |
133 | pop edi |
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134 | ret |
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87 | mario79 | 135 | @@: |
2434 | Serge | 136 | mov ebx, [ebx] |
87 | mario79 | 137 | .l1: |
2434 | Serge | 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 | @@: |
2434 | Serge | 148 | mov eax, [edi+2] |
149 | mov [CDSectorAddress], eax |
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87 | mario79 | 150 | ; now eax=cluster, ebx=position, ecx=count, edx=buffer for data |
151 | .new_sector: |
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2434 | Serge | 152 | test ecx, ecx |
153 | jz .done |
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154 | sub ebx, 2048 |
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155 | jae .next |
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156 | add ebx, 2048 |
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157 | jnz .incomplete_sector |
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158 | cmp ecx, 2048 |
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159 | jb .incomplete_sector |
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87 | mario79 | 160 | ; we may read and memmove complete sector |
2434 | Serge | 161 | mov [CDDataBuf_pointer], edx |
162 | call ReadCDWRetr; читаем сектор файла |
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163 | cmp [DevErrorCode], 0 |
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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: |
2434 | Serge | 168 | inc dword [CDSectorAddress] |
169 | jmp .new_sector |
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87 | mario79 | 170 | .incomplete_sector: |
171 | ; we must read and memmove incomplete sector |
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2434 | Serge | 172 | mov [CDDataBuf_pointer], CDDataBuf |
173 | call ReadCDWRetr; читаем сектор файла |
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174 | cmp [DevErrorCode], 0 |
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175 | jne .noaccess_3 |
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176 | push ecx |
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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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87 | mario79 | 181 | @@: |
2434 | Serge | 182 | sub ecx, ebx |
183 | push edi esi ecx |
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184 | mov edi, edx |
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185 | lea esi, [CDDataBuf + ebx] |
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186 | cld |
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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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193 | jmp .next |
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379 | serge | 194 | |
87 | mario79 | 195 | .done: |
2434 | Serge | 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: |
2434 | Serge | 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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2434 | Serge | 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: |
2434 | Serge | 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: |
2434 | Serge | 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: |
2434 | Serge | 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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2434 | Serge | 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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2434 | Serge | 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: |
2434 | Serge | 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? |
2434 | Serge | 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 | @@: |
2434 | Serge | 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: |
2434 | Serge | 284 | mov [cd_current_pointer_of_input_2], CDDataBuf |
285 | push eax esi edi edx |
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87 | mario79 | 286 | .get_names_from_buffer_1: |
2434 | Serge | 287 | call cd_get_name |
288 | jc .end_buffer |
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289 | inc dword [cd_counter_block] |
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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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294 | jz .get_names_from_buffer_1 |
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295 | mov edi, [cd_counter_block] |
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296 | mov [edx+4], edi |
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297 | dec ecx |
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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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87 | mario79 | 303 | ; jmp .unicode |
304 | .ansi: |
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2434 | Serge | 305 | cmp [cd_counter_block], 2 |
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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87 | mario79 | 313 | ; проверка конца файла |
2434 | Serge | 314 | mov ax, [esi] |
315 | cmp ax, word 3B00h; сепаратор конца файла ';' |
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316 | je .cd_get_parameters_of_file_1 |
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87 | mario79 | 317 | ; проверка для файлов не заканчивающихся сепаратором |
2434 | Serge | 318 | movzx eax, byte [ebp-33] |
319 | add eax, ebp |
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320 | sub eax, 34 |
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321 | cmp esi, eax |
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322 | je .cd_get_parameters_of_file_1 |
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87 | mario79 | 323 | ; проверка конца папки |
2434 | Serge | 324 | movzx eax, byte [ebp-1] |
325 | add eax, ebp |
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326 | cmp esi, eax |
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327 | jb .ansi |
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87 | mario79 | 328 | .cd_get_parameters_of_file_1: |
2434 | Serge | 329 | mov [edi], byte 0 |
330 | call cd_get_parameters_of_file |
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331 | add [cd_mem_location], 304 |
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332 | jmp .get_names_from_buffer_1 |
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87 | mario79 | 333 | |
334 | .ansi_parent_directory: |
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2434 | Serge | 335 | cmp [cd_counter_block], 2 |
336 | je @f |
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337 | mov [edi], byte '.' |
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338 | inc edi |
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339 | jmp .cd_get_parameters_of_file_1 |
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87 | mario79 | 340 | @@: |
2434 | Serge | 341 | mov [edi], word '..' |
342 | add edi, 2 |
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343 | jmp .cd_get_parameters_of_file_1 |
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87 | mario79 | 344 | |
345 | .unicode: |
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2434 | Serge | 346 | cmp [cd_counter_block], 2 |
347 | jbe .unicode_parent_directory |
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348 | cld |
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349 | movsw |
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87 | mario79 | 350 | ; проверка конца файла |
2434 | Serge | 351 | mov ax, [esi] |
352 | cmp ax, word 3B00h; сепаратор конца файла ';' |
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353 | je .cd_get_parameters_of_file_2 |
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87 | mario79 | 354 | ; проверка для файлов не заканчивающихся сепаратором |
2434 | Serge | 355 | movzx eax, byte [ebp-33] |
356 | add eax, ebp |
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357 | sub eax, 34 |
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358 | cmp esi, eax |
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359 | je .cd_get_parameters_of_file_2 |
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87 | mario79 | 360 | ; проверка конца папки |
2434 | Serge | 361 | movzx eax, byte [ebp-1] |
362 | add eax, ebp |
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363 | cmp esi, eax |
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364 | jb .unicode |
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87 | mario79 | 365 | .cd_get_parameters_of_file_2: |
2434 | Serge | 366 | mov [edi], word 0 |
367 | call cd_get_parameters_of_file |
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368 | add [cd_mem_location], 560 |
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369 | jmp .get_names_from_buffer_1 |
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87 | mario79 | 370 | |
371 | .unicode_parent_directory: |
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2434 | Serge | 372 | cmp [cd_counter_block], 2 |
373 | je @f |
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374 | mov [edi], word 2E00h; '.' |
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375 | add edi, 2 |
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376 | jmp .cd_get_parameters_of_file_2 |
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87 | mario79 | 377 | @@: |
2434 | Serge | 378 | mov [edi], dword 2E002E00h; '..' |
379 | add edi, 4 |
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380 | jmp .cd_get_parameters_of_file_2 |
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87 | mario79 | 381 | |
90 | mario79 | 382 | .end_buffer: |
2434 | Serge | 383 | pop edx edi esi eax |
384 | ret |
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90 | mario79 | 385 | |
386 | cd_get_parameters_of_file: |
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2434 | Serge | 387 | mov edi, [cd_mem_location] |
90 | mario79 | 388 | cd_get_parameters_of_file_1: |
87 | mario79 | 389 | ; получаем атрибуты файла |
2434 | Serge | 390 | xor eax, eax |
536 | diamond | 391 | ; файл не архивировался |
2434 | Serge | 392 | inc eax |
393 | shl eax, 1 |
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87 | mario79 | 394 | ; это каталог? |
2434 | Serge | 395 | test [ebp-8], byte 2 |
396 | jz .file |
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397 | inc eax |
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87 | mario79 | 398 | .file: |
399 | ; метка тома не как в FAT, в этом виде отсутсвует |
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400 | ; файл не является системным |
||
2434 | Serge | 401 | shl eax, 3 |
87 | mario79 | 402 | ; файл является скрытым? (атрибут существование) |
2434 | Serge | 403 | test [ebp-8], byte 1 |
404 | jz .hidden |
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405 | inc eax |
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87 | mario79 | 406 | .hidden: |
2434 | Serge | 407 | shl eax, 1 |
87 | mario79 | 408 | ; файл всегда только для чтения, так как это CD |
2434 | Serge | 409 | inc eax |
410 | mov [edi], eax |
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87 | mario79 | 411 | ; получаем время для файла |
412 | ;час |
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2434 | Serge | 413 | movzx eax, byte [ebp-12] |
414 | shl eax, 8 |
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87 | mario79 | 415 | ;минута |
2434 | Serge | 416 | mov al, [ebp-11] |
417 | shl eax, 8 |
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87 | mario79 | 418 | ;секунда |
2434 | Serge | 419 | mov al, [ebp-10] |
87 | mario79 | 420 | ;время создания файла |
2434 | Serge | 421 | mov [edi+8], eax |
87 | mario79 | 422 | ;время последнего доступа |
2434 | Serge | 423 | mov [edi+16], eax |
87 | mario79 | 424 | ;время последней записи |
2434 | Serge | 425 | mov [edi+24], eax |
87 | mario79 | 426 | ; получаем дату для файла |
427 | ;год |
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2434 | Serge | 428 | movzx eax, byte [ebp-15] |
429 | add eax, 1900 |
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430 | shl eax, 8 |
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87 | mario79 | 431 | ;месяц |
2434 | Serge | 432 | mov al, [ebp-14] |
433 | shl eax, 8 |
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87 | mario79 | 434 | ;день |
2434 | Serge | 435 | mov al, [ebp-13] |
87 | mario79 | 436 | ;дата создания файла |
2434 | Serge | 437 | mov [edi+12], eax |
87 | mario79 | 438 | ;время последнего доступа |
2434 | Serge | 439 | mov [edi+20], eax |
87 | mario79 | 440 | ;время последней записи |
2434 | Serge | 441 | mov [edi+28], eax |
87 | mario79 | 442 | ; получаем тип данных имени |
2434 | Serge | 443 | xor eax, eax |
444 | test dword [ebx+4], 1; 0=ANSI, 1=UNICODE |
||
445 | jnz .unicode_1 |
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446 | mov [edi+4], eax |
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447 | jmp @f |
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87 | mario79 | 448 | .unicode_1: |
2434 | Serge | 449 | inc eax |
450 | mov [edi+4], eax |
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87 | mario79 | 451 | @@: |
452 | ; получаем размер файла в байтах |
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2434 | Serge | 453 | xor eax, eax |
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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87 | mario79 | 458 | |
90 | mario79 | 459 | ;---------------------------------------------------------------- |
460 | ; |
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461 | ; fs_CdGetFileInfo - LFN variant for CD |
||
462 | ; get file/directory attributes structure |
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379 | serge | 463 | ; |
90 | mario79 | 464 | ;---------------------------------------------------------------- |
465 | fs_CdGetFileInfo: |
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2434 | Serge | 466 | cmp byte [esi], 0 |
467 | jnz @f |
||
468 | mov eax, 2 |
||
469 | ret |
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90 | mario79 | 470 | @@: |
2434 | Serge | 471 | push edi |
472 | call cd_find_lfn |
||
473 | pushfd |
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474 | cmp [DevErrorCode], 0 |
||
475 | jz @f |
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476 | popfd |
||
477 | pop edi |
||
478 | mov eax, 11 |
||
479 | ret |
||
90 | mario79 | 480 | @@: |
2434 | Serge | 481 | popfd |
482 | jnc @f |
||
483 | pop edi |
||
484 | mov eax, ERROR_FILE_NOT_FOUND |
||
485 | ret |
||
90 | mario79 | 486 | @@: |
487 | |||
2434 | Serge | 488 | mov edi, edx |
489 | push ebp |
||
490 | mov ebp, [cd_current_pointer_of_input] |
||
491 | add ebp, 33 |
||
492 | call cd_get_parameters_of_file_1 |
||
493 | pop ebp |
||
494 | and dword [edi+4], 0 |
||
495 | pop edi |
||
496 | xor eax, eax |
||
497 | ret |
||
90 | mario79 | 498 | |
628 | mario79 | 499 | ;---------------------------------------------------------------- |
87 | mario79 | 500 | cd_find_lfn: |
2434 | Serge | 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 |
2434 | Serge | 505 | push eax esi |
87 | mario79 | 506 | ; 16 сектор начало набора дескрипторов томов |
758 | mario79 | 507 | |
2434 | Serge | 508 | call WaitUnitReady |
509 | cmp [DevErrorCode], 0 |
||
510 | jne .access_denied |
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758 | mario79 | 511 | |
2434 | Serge | 512 | call prevent_medium_removal |
758 | mario79 | 513 | ; тестовое чтение |
2434 | Serge | 514 | mov [CDSectorAddress], dword 16 |
515 | mov [CDDataBuf_pointer], CDDataBuf |
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516 | call ReadCDWRetr;_1 |
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517 | cmp [DevErrorCode], 0 |
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518 | jne .access_denied |
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758 | mario79 | 519 | |
520 | ; вычисление последней сессии |
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2434 | Serge | 521 | call WaitUnitReady |
522 | cmp [DevErrorCode], 0 |
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523 | jne .access_denied |
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524 | call Read_TOC |
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525 | mov ah, [CDDataBuf+4+4] |
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526 | mov al, [CDDataBuf+4+5] |
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527 | shl eax, 16 |
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528 | mov ah, [CDDataBuf+4+6] |
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529 | mov al, [CDDataBuf+4+7] |
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530 | add eax, 15 |
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531 | mov [CDSectorAddress], eax |
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758 | mario79 | 532 | ; mov [CDSectorAddress],dword 15 |
2434 | Serge | 533 | mov [CDDataBuf_pointer], CDDataBuf |
758 | mario79 | 534 | |
87 | mario79 | 535 | .start: |
2434 | Serge | 536 | inc dword [CDSectorAddress] |
537 | call ReadCDWRetr;_1 |
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538 | cmp [DevErrorCode], 0 |
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539 | jne .access_denied |
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758 | mario79 | 540 | |
541 | .start_check: |
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87 | mario79 | 542 | ; проверка на вшивость |
2434 | Serge | 543 | cmp [CDDataBuf+1], dword 'CD00' |
544 | jne .access_denied |
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545 | cmp [CDDataBuf+5], byte '1' |
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546 | jne .access_denied |
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87 | mario79 | 547 | ; сектор является терминатором набор дескрипторов томов? |
2434 | Serge | 548 | cmp [CDDataBuf], byte 0xff |
549 | je .access_denied |
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87 | mario79 | 550 | ; сектор является дополнительным и улучшенным дескриптором тома? |
2434 | Serge | 551 | cmp [CDDataBuf], byte 0x2 |
552 | jne .start |
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87 | mario79 | 553 | ; сектор является дополнительным дескриптором тома? |
2434 | Serge | 554 | cmp [CDDataBuf+6], byte 0x1 |
555 | jne .start |
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758 | mario79 | 556 | |
87 | mario79 | 557 | ; параметры root директрории |
2434 | Serge | 558 | mov eax, [CDDataBuf+0x9c+2]; начало root директрории |
559 | mov [CDSectorAddress], eax |
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560 | mov eax, [CDDataBuf+0x9c+10]; размер root директрории |
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561 | cmp byte [esi], 0 |
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562 | jnz @f |
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563 | mov [cd_current_pointer_of_input], CDDataBuf+0x9c |
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564 | jmp .done |
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87 | mario79 | 565 | @@: |
566 | ; начинаем поиск |
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567 | .mainloop: |
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2434 | Serge | 568 | dec dword [CDSectorAddress] |
87 | mario79 | 569 | .read_to_buffer: |
2434 | Serge | 570 | inc dword [CDSectorAddress] |
571 | mov [CDDataBuf_pointer], CDDataBuf |
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572 | call ReadCDWRetr ; читаем сектор директории |
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573 | cmp [DevErrorCode], 0 |
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574 | jne .access_denied |
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575 | push ebp |
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576 | call cd_find_name_in_buffer |
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577 | pop ebp |
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578 | jnc .found |
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579 | sub eax, 2048 |
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87 | mario79 | 580 | ; директория закончилась? |
2434 | Serge | 581 | cmp eax, 0 |
582 | ja .read_to_buffer |
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87 | mario79 | 583 | ; нет искомого элемента цепочки |
584 | .access_denied: |
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2434 | Serge | 585 | pop esi eax |
586 | mov [cd_appl_data], 1 |
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587 | stc |
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588 | ret |
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87 | mario79 | 589 | ; искомый элемент цепочки найден |
590 | .found: |
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591 | ; конец пути файла |
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2434 | Serge | 592 | cmp byte [esi-1], 0 |
593 | jz .done |
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521 | diamond | 594 | .nested: |
2434 | Serge | 595 | mov eax, [cd_current_pointer_of_input] |
596 | push dword [eax+2] |
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597 | pop dword [CDSectorAddress] ; начало директории |
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598 | mov eax, [eax+2+8]; размер директории |
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599 | jmp .mainloop |
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87 | mario79 | 600 | ; указатель файла найден |
601 | .done: |
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2434 | Serge | 602 | test ebp, ebp |
603 | jz @f |
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604 | mov esi, ebp |
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605 | xor ebp, ebp |
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606 | jmp .nested |
||
521 | diamond | 607 | @@: |
2434 | Serge | 608 | pop esi eax |
609 | mov [cd_appl_data], 1 |
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610 | clc |
||
611 | ret |
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379 | serge | 612 | |
87 | mario79 | 613 | cd_find_name_in_buffer: |
2434 | Serge | 614 | mov [cd_current_pointer_of_input_2], CDDataBuf |
87 | mario79 | 615 | .start: |
2434 | Serge | 616 | call cd_get_name |
617 | jc .not_found |
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618 | call cd_compare_name |
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619 | jc .start |
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379 | serge | 620 | .found: |
2434 | Serge | 621 | clc |
622 | ret |
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87 | mario79 | 623 | .not_found: |
2434 | Serge | 624 | stc |
625 | ret |
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87 | mario79 | 626 | |
627 | cd_get_name: |
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2434 | Serge | 628 | push eax |
629 | mov ebp, [cd_current_pointer_of_input_2] |
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630 | mov [cd_current_pointer_of_input], ebp |
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631 | mov eax, [ebp] |
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632 | test eax, eax ; входы закончились? |
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633 | jz .next_sector |
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634 | cmp ebp, CDDataBuf+2048 ; буфер закончился? |
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635 | jae .next_sector |
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636 | movzx eax, byte [ebp] |
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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 |
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87 | mario79 | 642 | .next_sector: |
2434 | Serge | 643 | pop eax |
644 | stc |
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645 | ret |
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87 | mario79 | 646 | |
647 | cd_compare_name: |
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648 | ; compares ASCIIZ-names, case-insensitive (cp866 encoding) |
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649 | ; in: esi->name, ebp->name |
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650 | ; out: if names match: ZF=1 and esi->next component of name |
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651 | ; else: ZF=0, esi is not changed |
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652 | ; destroys eax |
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2434 | Serge | 653 | push esi eax edi |
654 | mov edi, ebp |
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87 | mario79 | 655 | .loop: |
2434 | Serge | 656 | cld |
657 | lodsb |
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658 | push eax |
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659 | call char_todown |
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660 | call ansi2uni_char |
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661 | xchg ah, al |
||
662 | scasw |
||
663 | pop eax |
||
664 | je .coincides |
||
665 | call char_toupper |
||
666 | call ansi2uni_char |
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667 | xchg ah, al |
||
668 | sub edi, 2 |
||
669 | scasw |
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670 | jne .name_not_coincide |
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87 | mario79 | 671 | .coincides: |
2434 | Serge | 672 | cmp [esi], byte '/'; разделитель пути, конец имени текущего элемента |
673 | je .done |
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674 | cmp [esi], byte 0; разделитель пути, конец имени текущего элемента |
||
675 | je .done |
||
676 | jmp .loop |
||
87 | mario79 | 677 | .name_not_coincide: |
2434 | Serge | 678 | pop edi eax esi |
679 | stc |
||
680 | ret |
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87 | mario79 | 681 | .done: |
682 | ; проверка конца файла |
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2434 | Serge | 683 | cmp [edi], word 3B00h; сепаратор конца файла ';' |
684 | je .done_1 |
||
87 | mario79 | 685 | ; проверка для файлов не заканчивающихся сепаратором |
2434 | Serge | 686 | movzx eax, byte [ebp-33] |
687 | add eax, ebp |
||
688 | sub eax, 34 |
||
689 | cmp edi, eax |
||
690 | je .done_1 |
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87 | mario79 | 691 | ; проверка конца папки |
2434 | Serge | 692 | movzx eax, byte [ebp-1] |
693 | add eax, ebp |
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694 | cmp edi, eax |
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695 | jne .name_not_coincide |
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87 | mario79 | 696 | .done_1: |
2434 | Serge | 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 |
||
2434 | Serge | 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 |
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87 | mario79 | 717 | ; 0x90-0x9F -> 0xE0-0xEF |
2434 | Serge | 718 | add al, 'а'-'ђ' |
87 | mario79 | 719 | .ret: |
2434 | Serge | 720 | ret |
87 | mario79 | 721 | .rus1: |
722 | ; 0x80-0x8F -> 0xA0-0xAF |
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723 | .az: |
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2434 | Serge | 724 | add al, 0x20 |
725 | ret |
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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 |
||
2434 | Serge | 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 |
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742 | jb .rus2 |
||
87 | mario79 | 743 | .unk: |
2434 | Serge | 744 | mov al, '_' |
745 | jmp .doit |
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87 | mario79 | 746 | .yo1: |
2434 | Serge | 747 | mov al, 'р' |
748 | jmp .doit |
||
87 | mario79 | 749 | .yo2: |
2434 | Serge | 750 | mov al, 'с' |
751 | jmp .doit |
||
87 | mario79 | 752 | .rus1: |
753 | ; 0x410-0x43F -> 0x80-0xAF |
||
2434 | Serge | 754 | add al, 0x70 |
755 | jmp .doit |
||
87 | mario79 | 756 | .rus2: |
757 | ; 0x440-0x44F -> 0xE0-0xEF |
||
2434 | Serge | 758 | add al, 0xA0 |
87 | mario79 | 759 | .ascii: |
760 | .doit: |
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2434 | Serge | 761 | ret |