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kolibrios/programs/fs/kfar/trunk/kfar_arc/7z.inc

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KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
; Loading of 7z archives was ported from 7z sources (file 7zip\Archive\7z\7zIn.cpp).
; The version 7-Zip 4.42 was used.
; 7-Zip is copyright (C) 1999-2006 Igor Pavlov.
; Assembler version as KFar plugin has been written by diamond, 2007.
virtual at 0
file_in_7z:
.fullname dd ? ; pointer to cp866 string
.name dd ?
.namelen dd ?
.bIsDirectory db ?
.bPseudoFolder db ?
rb 2
.parent dd ? ; pointer to parent directory record
.subfolders dd ? ; head of L2-list of subfolders [for folders]
.subfolders.end dd ?
.subfiles dd ? ; head of L2-list of files [for folders]
.subfiles.end dd ?
.NumSubItems dd ?
.next dd ? ; next item of list of subfolders or files
.prev dd ? ; previous item of list of subfolders or files
KFar 0.41 + KFar_Arc 0.11 git-svn-id: svn://kolibrios.org@631 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-09-20 18:20:58 +02:00
.stamp dd ?
KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
.attr dd ?
.FileCRC dd ?
.startPos dq ?
.CreationTime dq ?
.LastAccessTime dq ?
.LastWriteTime dq ?
.UnPackSize dq ?
.folder dd ?
.folder_index dd ?
.folderStart dq ?
.bAttrDefined db ?
.bStartPosDefined db ?
.bCRCDefined db ?
.bCreationTimeDefined db ?
.bLastAccessTimeDefined db ?
.bLastWriteTimeDefined db ?
.bHasStream db ?
.bAnti db ?
.size = $
end virtual
virtual at 0
handle_7z:
.type dd ?
.root.subfolders dd ?
.root.subfolders.end dd ?
.root.subfiles dd ?
.root.subfiles.end dd ?
.root.NumSubItems dd ?
.curdir dd ?
.NumFiles dd ?
.names_buf dd ?
.host dd ?
.host_datetime rd 6
; streams info
.numPackStreams dd ?
.packSizes dd ?
.numFolders dd ?
.unpackCRCsDefined dd ?
.unpackCRCs dd ?
.folders dd ?
.last_folder dd ?
.last_pos dq ?
.last_context dd ?
.last_main_stream dd ?
.password_len dd ? ; -1 if no password defined; in characters
.password rw password_maxlen
.basesize = $
; .size = .basesize + .NumFiles * file_in_7z.size
end virtual
iglobal
align 4
empty_7z_handle:
dd type_7z
dd 0,0,0,0,0,0
endg
kEnd = 0
kHeader = 1
kArchiveProperties = 2
kAdditionalStreamsInfo = 3
kMainStreamsInfo = 4
kFilesInfo = 5
kPackInfo = 6
kUnPackInfo = 7
kSubStreamsInfo = 8
kSize = 9
kCRC = 10
kFolder = 11
kCodersUnPackSize = 12
kNumUnPackStream = 13
kEmptyStream = 14
kEmptyFile = 15
kAnti = 16
kName = 17
kCreationTime = 18
kLastAccessTime = 19
kLastWriteTime = 20
kWinAttributes = 21
kComment = 22
kEncodedHeader = 23
kStartPos = 24
_7z.ReadByte:
cmp edi, [bufend]
jae return.err
mov al, [edi]
inc edi
ret
_7z.ReadWord:
add edi, 2
cmp edi, [bufend]
ja return.err
mov ax, [edi-2]
ret
_7z.ReadDword:
add edi, 4
cmp edi, [bufend]
ja return.err
mov eax, [edi-4]
ret
_7z.SkipSize:
test edx, edx
jnz return.err
add edi, eax
jc return.err
cmp edi, [bufend]
ja return.err
ret
_7z.ReadNumber:
xor eax, eax
push eax
push eax
call _7z.ReadByte
push ecx
xor ecx, ecx
@@:
add al, al
jnc @f
inc ecx
jmp @b
@@:
shr eax, cl
shr eax, 1
jz @f
mov [esp+4+ecx], al
@@:
jecxz .ret
push edx
xor edx, edx
@@:
call _7z.ReadByte
mov [esp+8+edx], al
inc edx
loop @b
pop edx
.ret:
pop ecx
pop eax
pop edx
ret
_7z.ReadNum:
push edx
call _7z.ReadNumber
test edx, edx
jnz return.err
test eax, eax
js return.err
pop edx
ret
open_7z:
; CInArchive::ReadDatabase()
cmp byte [esi+6], 0 ; major version must be 0
; minor version does not be checked ([byte +7]=2 for now)
jz @f
xor eax, eax
ret
@@:
and [hOut], 0
and [_7z.FreeSubStreams], 0
and [_7z.tmpVector], 0
push esi
add esi, 12
mov ecx, 20
call crc
pop esi
cmp eax, [esi+8]
jnz .header_crc_error
cmp dword [esi+24], 0
jnz .header_error
mov edi, buffer
mov ecx, [esi+20]
mov [bufsize], ecx
test ecx, ecx
jnz .notempty
mov eax, empty_7z_handle
push ebp
call [close]
ret
.notempty:
cmp ecx, 1024
jbe @f
call [pgalloc]
test eax, eax
jz .reterr
mov edi, eax
@@:
mov [bufptr], edi
lea eax, [edi+ecx]
mov [bufend], eax
mov eax, [esi+12]
mov edx, [esi+16]
add eax, 20h ; end of main header
adc edx, 0
push edx
push eax
push 0
push ebp
call [seek]
push ecx
push edi
push ebp
call [read]
cmp eax, ecx
jnz .header_error
push esi
mov esi, edi
call crc
pop esi
cmp eax, [esi+28]
jz .header_ok
.header_crc_error:
.header_error:
push ContinueBtn
push 1
push HeaderError_ptr
push 1
call [SayErr]
.clear:
mov ecx, [_7z.tmpVector]
jecxz @f
call [pgfree]
@@:
mov ecx, [hOut]
jecxz @f
call _7z.CloseHandle
@@:
mov ebx, [_7z.dataVectorSize]
test ebx, ebx
jz @f
call _7z.ReadAndDecodePackedStreams.free2
@@:
mov ecx, [_7z.FreeSubStreams]
jecxz @f
call [pgfree]
@@:
mov ecx, [bufptr]
cmp ecx, buffer
jz .reterr
call [pgfree]
.reterr:
or eax, -1
ret
.header_ok:
mov [_esp], esp
mov [inStream], ebp
.loop:
mov [error_proc], .header_error
mov [clear_proc], .clear
and [_7z.dataVectorSize], 0
call _7z.ReadNum
cmp eax, kHeader
jz .found_header
cmp eax, kEncodedHeader
jnz .header_error
call _7z.ReadAndDecodePackedStreams
cmp [_7z.StreamsInfo.numFolders], 0
jz .free_empty
cmp [_7z.StreamsInfo.numFolders], 1
jnz return.err
mov ecx, [bufptr]
cmp ecx, buffer
jz @f
call [pgfree]
@@:
mov edi, [_7z.unpbuf+4]
mov [bufptr], edi
mov ecx, [_7z.unpbuf]
add ecx, edi
mov [bufend], ecx
mov [error_proc], .header_error
mov [clear_proc], .clear
and [_7z.dataVectorSize], 0
call _7z.ReadNum
cmp eax, kHeader
jz .found_header
jmp return.err
.free_empty:
mov ecx, [bufptr]
cmp ecx, buffer
jz @f
call [pgfree]
@@:
push [inStream]
call [close]
mov eax, empty_7z_handle
ret
.found_header:
call _7z.ReadNum
cmp eax, kArchiveProperties
jnz .no_archive_props
@@:
call _7z.ReadNum
test eax, eax
jz @f
call _7z.SkipData
jmp @b
@@:
call _7z.ReadNum
.no_archive_props:
cmp eax, kAdditionalStreamsInfo
jnz .no_additional_streams
call _7z.ReadAndDecodePackedStreams
mov eax, [_7z.unpacked]
mov [_7z.dataVector], eax
mov eax, [_7z.StreamsInfo.numFolders]
mov [_7z.dataVectorSize], eax
mov [error_proc], .header_error
mov [clear_proc], .clear
call _7z.ReadNum
.no_additional_streams:
cmp eax, kMainStreamsInfo
jnz return.err
call _7z.ReadStreamsInfo
call _7z.ReadNum
test eax, eax
jnz .notempty2
.empty2:
mov ebx, [_7z.dataVectorSize]
test ebx, ebx
jz @f
call _7z.ReadAndDecodePackedStreams.free2
@@:
mov ecx, [_7z.FreeSubStreams]
jecxz @f
call [pgfree]
@@:
mov ecx, [bufptr]
cmp ecx, buffer
jz @f
call [pgfree]
@@:
push [inStream]
call [close]
mov eax, empty_7z_handle
ret
.notempty2:
cmp eax, kFilesInfo
jnz return.err
call _7z.ReadNum
test eax, eax
jz .empty2
mov ebx, eax ; number of files in archive
imul ecx, ebx, file_in_7z.size
add ecx, handle_7z.basesize
mov [hOut.allocated], ecx
call [pgalloc]
test eax, eax
jz return.clear
mov [hOut], eax
mov [eax+handle_7z.type], type_7z
mov [eax+handle_7z.NumFiles], ebx
push edi
lea edi, [eax+handle_7z.numPackStreams]
mov esi, _7z.StreamsInfo
mov ecx, 6
rep movsd
or [eax+handle_7z.password_len], -1
or [eax+handle_7z.last_folder], -1
mov [eax+handle_7z.last_context], ecx
mov [eax+handle_7z.names_buf], ecx
mov [eax+handle_7z.host], ecx
cmp [bPasswordDefined], cl
jz @f
mov ecx, [password_size]
mov [eax+handle_7z.password_len], ecx
lea edi, [eax+handle_7z.password]
mov esi, password_unicode
shr ecx, 1
rep movsd
adc ecx, ecx
rep movsw
@@:
lea edi, [eax+handle_7z.basesize]
imul ecx, ebx, file_in_7z.size/4
xor eax, eax
rep stosd
pop edi
mov eax, [_7z.StreamsInfo.SubStreamsSizes]
mov [_7z.FreeSubStreams], eax
mov [error_proc], .header_error
mov [clear_proc], .clear
mov ecx, ebx
shl ecx, 2
call [pgalloc]
test eax, eax
jz return.clear
push edi
mov edi, eax
mov [_7z.tmpVector], eax
add eax, ebx
mov [_7z.emptyStreams], eax
add eax, ebx
mov [_7z.emptyFiles], eax
add eax, ebx
mov [_7z.antiFiles], eax
mov ecx, ebx
xor eax, eax
rep stosd
pop edi
mov [_7z.numEmptyStreams], eax
.parse_header:
call _7z.ReadNum
test eax, eax
jz .parse_header_done
mov ecx, eax ; ecx = type
call _7z.ReadNum ; eax = size
cmp ecx, kName
jz .parse_names
cmp ecx, kWinAttributes
jz .parse_winAttr
cmp ecx, kStartPos
jz .parse_startPos
cmp ecx, kEmptyStream
jz .parse_emptyStream
cmp ecx, kEmptyFile
jz .parse_emptyFile
cmp ecx, kAnti
jz .parse_anti
cmp ecx, kCreationTime
jz .parse_time
cmp ecx, kLastWriteTime
jz .parse_time
cmp ecx, kLastAccessTime
jz .parse_time
xor edx, edx
call _7z.SkipSize
jmp .parse_header
.parse_names:
push eax
call _7z.SwitchStream
pop eax
jz @f
mov eax, [bufend]
sub eax, edi
@@:
shr eax, 1 ; size of ANSI string is a half of size of UNICODE string
mov ecx, eax
call [pgalloc]
test eax, eax
jz return.clear
mov ebp, eax
mov esi, [hOut]
mov [esi+handle_7z.names_buf], eax
add eax, ecx
push eax ; remember limit
mov ecx, ebx
add esi, handle_7z.basesize + file_in_7z.fullname
mov [bWasWarning], 0
.parse_names_loop:
mov [esi], ebp
add esi, file_in_7z.size
.parse_names_loop_int:
cmp ebp, [esp]
jae return.err
call _7z.ReadWord
; UNICODE char -> cp866 char
cmp ax, 0x80
jb .id
cmp ax, 0x401
jz .yo1
cmp ax, 0x451
jz .yo2
cmp ax, 0x410
jb .unk
cmp ax, 0x440
jb .rus1
cmp ax, 0x450
jb .rus2
.unk:
cmp [bWasWarning], 0
jnz @f
push ContinueBtn
push 1
push aEncodingProblem_str_ptr
push 3
push aEncodingProblem
call [Message]
inc [bWasWarning]
@@:
mov al, '_'
jmp .id
.yo1:
mov al, '<27>'
jmp .id
.yo2:
mov al, '<27>'
jmp .id
.rus1:
; 0x410-0x43F -> 0x80-0xAF
add al, 0x70
jmp .id
.rus2:
; 0x440-0x44F -> 0xE0-0xEF
add al, 0xA0
.id:
mov [ebp], al
inc ebp
test al, al
jnz .parse_names_loop_int
loop .parse_names_loop
pop eax
call _7z.UnswitchStream
jmp .parse_header
.parse_winAttr:
mov edx, [_7z.tmpVector]
push ebx
mov ecx, ebx
mov ebx, edx
call _7z.ReadBoolVector2
pop ebx
call _7z.SwitchStream
mov esi, [hOut]
add esi, handle_7z.basesize
mov ecx, ebx
.winAttrLoop:
mov al, [edx]
inc edx
mov [esi+file_in_7z.bAttrDefined], al
test al, al
jz @f
call _7z.ReadDword
mov [esi+file_in_7z.attr], eax
@@:
add esi, file_in_7z.size
loop .winAttrLoop
call _7z.UnswitchStream
jmp .parse_header
.parse_startPos:
mov edx, [_7z.tmpVector]
push ebx
mov ecx, ebx
mov ebx, edx
call _7z.ReadBoolVector2
pop ebx
call _7z.SwitchStream
mov esi, [hOut]
add esi, handle_7z.basesize
mov ecx, ebx
.startPosLoop:
mov al, [edx]
inc edx
mov [esi+file_in_7z.bStartPosDefined], al
test al, al
jz @f
call _7z.ReadDword
mov dword [esi+file_in_7z.startPos], eax
call _7z.ReadDword
mov dword [esi+file_in_7z.startPos+4], eax
@@:
add esi, file_in_7z.size
loop .startPosLoop
call _7z.UnswitchStream
jmp .parse_header
.parse_emptyStream:
mov edx, [_7z.emptyStreams]
push ebx
mov ecx, ebx
mov ebx, edx
call _7z.ReadBoolVector
pop ebx
and [_7z.numEmptyStreams], 0
mov ecx, ebx
.emptyStrLoop:
cmp byte [edx], 0
jz @f
inc [_7z.numEmptyStreams]
@@:
inc edx
loop .emptyStrLoop
jmp .parse_header
.parse_emptyFile:
push ebx
mov ecx, [_7z.numEmptyStreams]
mov ebx, [_7z.emptyFiles]
call _7z.ReadBoolVector
pop ebx
jmp .parse_header
.parse_anti:
push ebx
mov ecx, [_7z.numEmptyStreams]
mov ebx, [_7z.antiFiles]
call _7z.ReadBoolVector
pop ebx
jmp .parse_header
.parse_time:
push ecx
push ebx
mov ecx, ebx
mov ebx, [_7z.tmpVector]
call _7z.ReadBoolVector2
pop ebx
call _7z.SwitchStream
mov esi, [hOut]
add esi, handle_7z.basesize
xor ecx, ecx
.timeLoop:
mov eax, [_7z.tmpVector]
mov al, [eax+ecx]
pop edx
push edx
mov [esi + file_in_7z.bCreationTimeDefined + edx - kCreationTime], al
test al, al
jz @f
call _7z.ReadDword
push eax
call _7z.ReadDword
mov edx, eax
pop eax
push edi
mov edi, [esp+4]
lea edi, [esi + file_in_7z.CreationTime + (edi-kCreationTime)*8]
call ntfs_datetime_to_bdfe
pop edi
@@:
add esi, file_in_7z.size
inc ecx
cmp ecx, ebx
jb .timeLoop
call _7z.UnswitchStream
pop eax
jmp .parse_header
.parse_header_done:
xor ecx, ecx ; index in emptyFiles
xor edx, edx ; index in subStreams
xor ebp, ebp ; index in files
mov esi, [hOut]
add esi, handle_7z.basesize
.filesLoop:
mov eax, [_7z.emptyStreams]
mov al, [eax+ebp]
xor al, 1
mov [esi+file_in_7z.bHasStream], al
jz .nostream
mov [esi+file_in_7z.bIsDirectory], 0
mov [esi+file_in_7z.bAnti], 0
mov eax, [_7z.StreamsInfo.SubStreamsSizes]
push dword [eax+edx*8]
pop dword [esi+file_in_7z.UnPackSize]
push dword [eax+edx*8+4]
pop dword [esi+file_in_7z.UnPackSize+4]
mov eax, [_7z.StreamsInfo.SubStreamsCRCsDefined]
mov al, [eax+edx]
mov [esi+file_in_7z.bCRCDefined], al
test al, al
jz @f
mov eax, [_7z.StreamsInfo.SubStreamsCRCs]
mov eax, [eax+edx*4]
mov [esi+file_in_7z.FileCRC], eax
@@:
inc edx
jmp .filesCont
.nostream:
mov eax, [_7z.emptyFiles]
cmp byte [eax+ecx], 0
setz [esi+file_in_7z.bIsDirectory]
mov eax, [_7z.antiFiles]
cmp byte [eax+ecx], 0
setnz [esi+file_in_7z.bAnti]
and dword [esi+file_in_7z.UnPackSize], 0
and dword [esi+file_in_7z.UnPackSize+4], 0
mov [esi+file_in_7z.bCRCDefined], 0
inc ecx
.filesCont:
inc ebp
add esi, file_in_7z.size
dec ebx
jnz .filesLoop
mov ecx, [_7z.tmpVector]
call [pgfree]
and [_7z.tmpVector], 0
mov ebx, [_7z.dataVectorSize]
test ebx, ebx
jz @f
call _7z.ReadAndDecodePackedStreams.free2
and [_7z.dataVectorSize], 0
@@:
mov ecx, [_7z.FreeSubStreams]
jecxz @f
call [pgfree]
and [_7z.FreeSubStreams], 0
@@:
mov ecx, [bufptr]
cmp ecx, buffer
jz @f
call [pgfree]
mov [bufptr], buffer
@@:
xor esi, esi ; index of folder
mov edi, [hOut]
mov ebx, [edi+handle_7z.NumFiles]
add edi, handle_7z.basesize ; pointer to fileinfo
push 0 ; start index of packed stream for folder
.getfoldersloop0:
xor edx, edx ; index in folder
push edx edx ; position in folder
.getfoldersloop:
dec ebx
js .getfoldersdone
cmp [edi+file_in_7z.bHasStream], 0
jnz @f
test edx, edx
jz .nofolder
@@:
test edx, edx
jnz .notfirst
; skip empty folders
@@:
mov eax, [hOut]
cmp esi, [eax+handle_7z.numFolders]
jae return.err
mov eax, [eax+handle_7z.folders]
mov eax, [eax+esi*4]
cmp edx, [eax+_7z.StreamsInfo.numUnPackStreams]
jb @f
inc esi
jmp @b
@@:
.notfirst:
mov [edi+file_in_7z.folder], esi
mov [edi+file_in_7z.folder_index], edx
mov eax, [esp]
mov dword [edi+file_in_7z.folderStart], eax
mov eax, [esp+4]
mov dword [edi+file_in_7z.folderStart+4], eax
mov ecx, dword [edi+file_in_7z.UnPackSize]
add [esp], ecx
mov ecx, dword [edi+file_in_7z.UnPackSize+4]
adc [esp+4], ecx
add edi, file_in_7z.size
inc edx
mov eax, [hOut]
mov eax, [eax+handle_7z.folders]
mov eax, [eax+esi*4]
cmp edx, [eax+_7z.StreamsInfo.numUnPackStreams]
jb .getfoldersloop
inc esi
pop edx edx
jmp .getfoldersloop0
.nofolder:
push -1
pop eax
mov [edi+file_in_7z.folder], eax
mov [edi+file_in_7z.folder_index], eax
mov dword [edi+file_in_7z.folderStart], eax
mov dword [edi+file_in_7z.folderStart+4], eax
add edi, file_in_7z.size
jmp .getfoldersloop
.getfoldersdone:
pop eax eax eax
mov ebp, [hOut]
mov esi, [ebp+handle_7z.folders]
xor ebx, ebx
cmp ebx, [ebp+handle_7z.numFolders]
jae .getoffsdone
.getoffsloop:
lodsd
test ebx, ebx
jnz .getoffs2
mov edx, dword [_7z.StreamsInfo.dataOffset]
mov dword [eax+_7z.StreamsInfo.packOffset], edx
mov edx, dword [_7z.StreamsInfo.dataOffset+4]
mov dword [eax+_7z.StreamsInfo.packOffset+4], edx
jmp .getoffscont
.getoffs2:
mov ecx, [esi-8]
mov edx, dword [ecx+_7z.StreamsInfo.packOffset]
mov dword [eax+_7z.StreamsInfo.packOffset], edx
mov edx, dword [ecx+_7z.StreamsInfo.packOffset+4]
mov dword [eax+_7z.StreamsInfo.packOffset+4], edx
mov edi, [ecx+_7z.StreamsInfo.startPackedStream]
mov ecx, [ecx+_7z.StreamsInfo.numPackedStreams]
push ecx
add ecx, edi
cmp ecx, [ebp+handle_7z.numPackStreams]
ja return.err
pop ecx
shl edi, 3
add edi, [ebp+handle_7z.packSizes]
@@:
dec ecx
js @f
mov edx, [edi]
add dword [eax+_7z.StreamsInfo.packOffset], edx
mov edx, [edi+4]
adc dword [eax+_7z.StreamsInfo.packOffset+4], edx
add edi, 8
jmp @b
@@:
.getoffscont:
inc ebx
cmp ebx, [ebp+handle_7z.numFolders]
jb .getoffsloop
.getoffsdone:
mov edx, [hOut]
mov ebx, [edx+handle_7z.NumFiles]
lea edi, [edx+handle_7z.root.subfolders]
add edx, handle_7z.basesize
push file_in_7z.size
call init_file_links
mov eax, [hOut]
and [eax+handle_7z.curdir], 0 ; set root directory
mov esi, [inStream]
mov [eax+handle_7z.host], esi
lea edi, [eax+handle_7z.host_datetime]
KFar 0.41 + KFar_Arc 0.11 git-svn-id: svn://kolibrios.org@631 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-09-20 18:20:58 +02:00
mov esi, [esp+12]
KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
add esi, 8
mov ecx, 6
rep movsd
ret
_7z.CloseHandle:
mov esi, ecx
push [esi+handle_7z.host]
call [close]
mov ecx, [esi+handle_7z.packSizes]
call [pgfree]
mov ecx, [esi+handle_7z.folders]
call [pgfree]
mov ecx, [esi+handle_7z.names_buf]
call [pgfree]
mov ecx, [esi+handle_7z.last_context]
jecxz @f
call [pgfree]
@@:
mov ecx, esi
call [pgfree]
ret
close_7z:
mov ecx, [esp+4]
cmp ecx, empty_7z_handle
jz @f
call _7z.CloseHandle
@@:
ret 4
uglobal
align 4
_7z.unpacked dd ?
_7z.unpbuf rd 2*8
_7z.CurInStream dd ?
_7z.dataVector dd ?
_7z.dataVectorSize dd ?
_7z.FreeSubStreams dd ?
_7z.tmpVector dd ?
_7z.emptyStreams dd ?
_7z.numEmptyStreams dd ?
_7z.emptyFiles dd ?
_7z.antiFiles dd ?
endg
_7z.ReadAndDecodePackedStreams:
call _7z.ReadStreamsInfo
mov ecx, [_7z.StreamsInfo.numFolders]
test ecx, ecx
jz .ret2
push ecx
mov ecx, [_7z.StreamsInfo.SubStreamsSizes]
jecxz @f
call [pgfree]
and [_7z.StreamsInfo.SubStreamsSizes], 0
@@:
pop ecx
mov eax, _7z.unpbuf
cmp ecx, 8
jbe .1
shl ecx, 3
call [pgalloc]
test eax, eax
jz return.clear
mov esi, eax
@@:
and dword [esi], 0
add esi, 4
sub ecx, 4
jnz @b
.1:
mov [_7z.unpacked], eax
mov esi, eax
xor ecx, ecx
mov [_7z.CurInStream], ecx
mov [error_proc], .error
mov [clear_proc], .clear
.loop:
mov eax, [_7z.StreamsInfo.folders]
mov ebx, [eax+ecx*4]
call _7z.GetUnPackSize
test edx, edx
jnz return.err
test eax, eax
js return.err
push ecx
mov [esi], eax
mov [_7z.decode.outBufferSize], eax
mov ecx, eax
call [pgalloc]
test eax, eax
jz return.err
mov [esi+4], eax
mov [_7z.decode.outBufferPtr], eax
push esi
call _7z.decode
pop esi
pop ecx
push ecx
mov eax, [_7z.StreamsInfo.unpackCRCsDefined]
cmp byte [eax+ecx], 0
jz @f
push esi
mov ecx, [esi]
mov esi, [esi+4]
call crc
pop esi
pop ecx
push ecx
mov edx, [_7z.StreamsInfo.unpackCRCs]
cmp [edx+ecx*4], eax
jnz return.err
@@:
add esi, 8
pop ecx
inc ecx
cmp ecx, [_7z.StreamsInfo.numFolders]
jb .loop
.ret:
mov ecx, [_7z.StreamsInfo.folders]
call [pgfree]
mov [error_proc], .error2
mov [clear_proc], .clear2
.ret2:
mov ecx, [_7z.StreamsInfo.packSizes]
call [pgfree]
ret
.error:
call .free
jmp _7z.ReadStreamsInfo.error
.clear:
call .free
jmp _7z.ReadStreamsInfo.clear
.error2:
call .free
jmp open_7z.header_error
.clear2:
call .free
jmp open_7z.clear
.free:
mov ebx, [_7z.StreamsInfo.numFolders]
.free2:
dec ebx
js @f
mov ecx, [_7z.unpacked]
mov ecx, [ecx+ebx*8+4]
call [pgfree]
jmp .free2
@@:
mov ecx, [_7z.unpacked]
cmp ecx, _7z.unpbuf
jz @f
call [pgfree]
@@:
ret
_7z.GetUnPackSize:
xor edx, edx
mov eax, [ebx+_7z.StreamsInfo.numOutStreams]
test eax, eax
jz .ret
.scan:
dec eax
js return.err
push ecx
mov ecx, [ebx+_7z.StreamsInfo.numBindPairs]
mov edx, [ebx+_7z.StreamsInfo.bindPairs]
@@:
add edx, 8
dec ecx
js .found
cmp [edx-4], eax
jnz @b
pop ecx
jmp .scan
.found:
mov [ebx+_7z.StreamsInfo.mainOutStream], eax
mov ecx, [ebx+_7z.StreamsInfo.unpackSizes]
mov edx, [ecx+eax*8+4]
mov eax, [ecx+eax*8]
pop ecx
.ret:
ret
uglobal
align 4
_7z.StreamsInfo:
.numPackStreams dd ?
.packSizes dd ? ; 8 bytes per item
.numFolders dd ?
.unpackCRCsDefined dd ?
.unpackCRCs dd ?
.folders dd ?
.folders.size dd ?
.folders.alloc dd ?
.dataOffset dq ?
.packCRCsDefined dd ? ; 1 byte per item
.packCRCs dd ? ; 4 bytes per item
virtual at 0
.numCoders dd ?
.bindPairs dd ?
.numBindPairs dd ?
.packedStreams dd ?
.numPackedStreams dd ?
.startPackedStream dd ?
.numOutStreams dd ?
.unpackSizes dd ?
.mainOutStream dd ?
.numUnPackStreams dd ?
.packOffset dq ?
.fsz = $
end virtual
.numSubStreams dd ?
.SubStreamsSizes dd ?
.SubStreamsCRCsDefined dd ?
.SubStreamsCRCs dd ?
.tmpSubStreamsCRCsDefined dd ?
.tmpSubStreamsCRCs dd ?
endg
_7z.SkipData:
call _7z.ReadNumber
call _7z.SkipSize
ret
_7z.WaitAttribute:
call _7z.ReadNumber
cmp eax, ecx
jz @f
test eax, eax
jz return.err
call _7z.SkipData
jmp _7z.WaitAttribute
@@:
ret
_7z.ReadBoolVector2:
; in: ebx->vector, ecx=size
call _7z.ReadByte
test al, al
jz _7z.ReadBoolVector
push ebx ecx
jecxz .ret
@@:
mov byte [ebx], 1
inc ebx
loop @b
.ret:
pop ecx ebx
ret
_7z.ReadBoolVector:
push ebx ecx
jecxz .ret
xor eax, eax
.1:
add al, al
jnz @f
call _7z.ReadByte
stc
adc al, al
@@:
setc byte [ebx]
inc ebx
loop .1
.ret:
pop ecx ebx
ret
_7z.ReadHashDigests:
; in: ebx->bool vector, esi->crc, ecx=size
call _7z.ReadBoolVector2
jecxz .ret
.1:
xor eax, eax
cmp byte [ebx], al
jz @f
call _7z.ReadDword
@@:
mov [esi], eax
add esi, 4
inc ebx
loop .1
.ret:
ret
uglobal
_7z.saved_edi dd ?
_7z.saved_edi_end dd ?
endg
_7z.SwitchStream:
mov eax, [bufend]
mov [_7z.saved_edi_end], eax
call _7z.ReadByte
test al, al
jnz @f
ret
@@:
call _7z.ReadNum
mov [_7z.saved_edi], edi
cmp eax, [_7z.dataVectorSize]
jae return.err
shl eax, 3
add eax, [_7z.dataVector]
mov edi, [eax+4]
mov eax, [eax]
add eax, edi
mov [bufend], eax
ret
_7z.UnswitchStream:
mov eax, [_7z.saved_edi_end]
cmp eax, [bufend]
jnz @f
ret
@@:
mov [bufend], eax
mov edi, [_7z.saved_edi]
@@:
ret
; 6 <EFBFBD>ணࠬ<EFBFBD><EFBFBD><EFBFBD>⮢ <EFBFBD><EFBFBD>⠫<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,
; <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> 㬠, <EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>⠫<EFBFBD><EFBFBD><EFBFBD> 5.
_7z.ReadStreamsInfo:
xor eax, eax
mov [_7z.StreamsInfo.numPackStreams], eax
mov [_7z.StreamsInfo.packSizes], eax
mov [_7z.StreamsInfo.numFolders], eax
mov [_7z.StreamsInfo.folders], eax
mov [_7z.StreamsInfo.numSubStreams], eax
mov [_7z.StreamsInfo.SubStreamsSizes], eax
mov [_7z.StreamsInfo.tmpSubStreamsCRCsDefined], eax
mov [error_proc], .error
mov [clear_proc], .clear
.mainloop:
call _7z.ReadNum
test eax, eax
jz @b
cmp eax, kSubStreamsInfo
jz .SubStreamsInfo
cmp eax, kUnPackInfo
jz .UnpackInfo
cmp eax, kPackInfo
jnz return.err
.PackInfo:
cmp [_7z.StreamsInfo.numPackStreams], 0
jnz return.err
call _7z.ReadNumber
add eax, 0x20
adc edx, 0
mov dword [_7z.StreamsInfo.dataOffset], eax
mov dword [_7z.StreamsInfo.dataOffset+4], edx
call _7z.ReadNum
mov [_7z.StreamsInfo.numPackStreams], eax
mov ecx, kSize
call _7z.WaitAttribute
mov ecx, [_7z.StreamsInfo.numPackStreams]
imul ecx, 8+1+4
jecxz .nostreams1
call [pgalloc]
test eax, eax
jz return.clear
mov [_7z.StreamsInfo.packSizes], eax
mov ecx, [_7z.StreamsInfo.numPackStreams]
push eax
lea eax, [eax+ecx*8]
mov [_7z.StreamsInfo.packCRCsDefined], eax
mov ebx, eax
add eax, ecx
mov [_7z.StreamsInfo.packCRCs], eax
@@:
mov byte [ebx], 0
inc ebx
loop @b
pop eax
.nostreams1:
mov ecx, [_7z.StreamsInfo.numPackStreams]
jecxz .noloop1
mov esi, eax
@@:
call _7z.ReadNumber
mov [esi], eax
mov [esi+4], edx
add esi, 8
loop @b
.noloop1:
call _7z.ReadNum
test eax, eax
jz .mainloop
cmp eax, kCRC
jz .packInfo.crc
call _7z.SkipData
jmp .noloop1
.packInfo.crc:
mov esi, [_7z.StreamsInfo.packCRCs]
mov ebx, [_7z.StreamsInfo.packCRCsDefined]
mov ecx, [_7z.StreamsInfo.numPackStreams]
call _7z.ReadHashDigests
jmp .noloop1
.UnpackInfo:
cmp [_7z.StreamsInfo.folders], 0
jnz return.err
mov ecx, kFolder
call _7z.WaitAttribute
call _7z.ReadNum
mov ecx, eax
mov [_7z.StreamsInfo.numFolders], eax
call _7z.SwitchStream
test ecx, ecx
jz .nofolders
push ecx
mov ecx, 0x1000
and [_7z.StreamsInfo.folders.size], 0
mov [_7z.StreamsInfo.folders.alloc], ecx
call [pgalloc]
test eax, eax
jz return.clear
mov [_7z.StreamsInfo.folders], eax
pop ecx
lea ecx, [ecx*9]
call .folders_alloc
xor ecx, ecx
.folderloop:
mov eax, [_7z.StreamsInfo.folders]
push [_7z.StreamsInfo.folders.size]
pop dword [eax+ecx*4]
push ebp
mov [_ebp], ebp
push ecx
mov ecx, _7z.StreamsInfo.fsz
call .folders_alloc
mov ebp, eax
add ebp, [_7z.StreamsInfo.folders]
call _7z.ReadNum
mov [ebp+_7z.StreamsInfo.numCoders], eax
test eax, eax
jz return.err
mov ecx, eax
push ecx
shl ecx, 2
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
pop ecx
add eax, [_7z.StreamsInfo.folders]
@@:
and dword [eax], 0
add eax, 4
loop @b
push 0 ; numOutStreams
push 0 ; numInStreams
; [folders] = array of pointers to coders info
; Format of coder info:
; dd NextCoder
; db MethodID.IDSize
; times IDSize db MethodID.ID
; dd NumInStreams
; dd NumOutStreams
; dd PropSize
; times PropSize db Properties
xor esi, esi
.coders_loop:
call _7z.ReadByte
mov dl, al
and eax, 0xF
lea ecx, [eax+17]
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
push eax
mov ecx, [_7z.StreamsInfo.folders]
lea ebx, [ebp+esi*4+_7z.StreamsInfo.fsz]
@@:
cmp dword [ebx], 0
jz @f
mov ebx, [ebx]
add ebx, ecx
jmp @b
@@:
mov [ebx], eax
pop ebx
add ebx, ecx
and dword [ebx], 0
add ebx, 4
mov ecx, edx
and ecx, 0xF
mov byte [ebx], cl
inc ebx
jecxz .2
@@:
call _7z.ReadByte
mov byte [ebx], al
inc ebx
loop @b
.2:
test dl, 10h
jnz .coder_multiple_streams
mov dword [ebx], 1
mov dword [ebx+4], 1
inc dword [esp]
inc dword [esp+4]
jmp @f
.coder_multiple_streams:
call _7z.ReadNum
mov [ebx], eax
add dword [esp], eax
call _7z.ReadNum
mov [ebx+4], eax
add dword [esp+4], eax
; all currently defined 7z coders have 1 unpacked stream
; moreover, all reasonable coders have 1 unpacked stream
; so assume 1 output stream for unpacker - this simplifies decoding procedure
cmp eax, 1
jnz return.err
@@:
and dword [ebx+8], 0
add ebx, 12
test dl, 20h
jz .coder_no_properties
call _7z.ReadNum
test eax, eax
jz .coder_no_properties
mov [ebx-4], eax
mov ecx, eax
sub ebx, [_7z.StreamsInfo.folders]
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
add ebx, [_7z.StreamsInfo.folders]
@@:
call _7z.ReadByte
mov [ebx], al
inc ebx
loop @b
.coder_no_properties:
test dl, dl
js .coders_loop
inc esi
cmp esi, [ebp+_7z.StreamsInfo.numCoders]
jb .coders_loop
mov [ebp+_7z.StreamsInfo.numUnPackStreams], 1
mov eax, [esp+4]
dec eax
js return.err
mov [ebp+_7z.StreamsInfo.numBindPairs], eax
push eax
mov ecx, eax
shl ecx, 3
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
mov [ebp+_7z.StreamsInfo.bindPairs], eax
pop ecx
jecxz .noloop3
mov esi, eax
add esi, [_7z.StreamsInfo.folders]
@@:
call _7z.ReadNum
mov [esi], eax
cmp eax, [esp]
jae return.err
call _7z.ReadNum
mov [esi+4], eax
cmp eax, [esp+4]
jae return.err
add esi, 8
loop @b
.noloop3:
pop eax ; numInStreams
pop edx ; numOutStreams
mov [ebp+_7z.StreamsInfo.numOutStreams], edx
sub eax, edx
js return.err
inc eax
mov [ebp+_7z.StreamsInfo.numPackedStreams], eax
mov ecx, eax
push eax
shl ecx, 2
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
mov [ebp+_7z.StreamsInfo.packedStreams], eax
pop ecx
mov esi, eax
add esi, [_7z.StreamsInfo.folders]
cmp ecx, 1
jnz .multiplePackedStreams
mov ebx, [ebp+_7z.StreamsInfo.bindPairs]
add ebx, [_7z.StreamsInfo.folders]
push edx
xor ecx, ecx
.3:
push ebx
mov edx, [ebp+_7z.StreamsInfo.numBindPairs]
@@:
dec edx
js .5
cmp dword [ebx], ecx
jz .4
add ebx, 8
jmp @b
.4:
pop ebx
inc ecx
jmp .3
.5:
pop ebx
pop edx
mov [esi], ecx
jmp .commonPackedStreams
.multiplePackedStreams:
call _7z.ReadNum
mov [esi], eax
add esi, 4
loop .multiplePackedStreams
.commonPackedStreams:
mov ecx, edx
shl ecx, 3
sub ebp, [_7z.StreamsInfo.folders]
call .folders_alloc
add ebp, [_7z.StreamsInfo.folders]
mov [ebp+_7z.StreamsInfo.unpackSizes], eax
pop ecx
xor edx, edx
jecxz @f
mov eax, [_7z.StreamsInfo.folders]
mov eax, [eax+(ecx-1)*4]
add eax, [_7z.StreamsInfo.folders]
mov edx, [eax+_7z.StreamsInfo.numPackedStreams]
add edx, [eax+_7z.StreamsInfo.startPackedStream]
@@:
mov [ebp+_7z.StreamsInfo.startPackedStream], edx
pop ebp
inc ecx
cmp ecx, [_7z.StreamsInfo.numFolders]
jb .folderloop
.nofolders:
call _7z.UnswitchStream
mov ecx, kCodersUnPackSize
call _7z.WaitAttribute
xor ecx, ecx
.6:
cmp ecx, [_7z.StreamsInfo.numFolders]
jae .7
mov eax, [_7z.StreamsInfo.folders]
push ebp
mov ebp, [eax+ecx*4]
add ebp, eax
mov esi, [ebp+_7z.StreamsInfo.numOutStreams]
mov ebp, [ebp+_7z.StreamsInfo.unpackSizes]
add ebp, [_7z.StreamsInfo.folders]
@@:
call _7z.ReadNumber
mov dword [ebp], eax
mov dword [ebp+4], edx
add ebp, 8
dec esi
jnz @b
pop ebp
inc ecx
jmp .6
.7:
; convert all relative addresses to pointers
xor ecx, ecx
mov edx, [_7z.StreamsInfo.folders]
.8:
cmp ecx, [_7z.StreamsInfo.numFolders]
jae .9
lea eax, [edx+ecx*4]
add [eax], edx
mov eax, [eax]
add [eax+_7z.StreamsInfo.bindPairs], edx
add [eax+_7z.StreamsInfo.packedStreams], edx
add [eax+_7z.StreamsInfo.unpackSizes], edx
mov ebx, [eax+_7z.StreamsInfo.numCoders]
add eax, _7z.StreamsInfo.fsz
inc ecx
.11:
dec ebx
js .8
push eax
@@:
cmp dword [eax], 0
jz @f
add [eax], edx
mov eax, [eax]
jmp @b
@@:
pop eax
add eax, 4
jmp .11
.9:
; done
mov eax, [_7z.StreamsInfo.numFolders]
lea edx, [edx+eax*4]
mov [_7z.StreamsInfo.unpackCRCsDefined], edx
add edx, eax
mov [_7z.StreamsInfo.unpackCRCs], edx
@@:
call _7z.ReadNum
test eax, eax
jz .mainloop
cmp eax, kCRC
jz .unpackInfo.crc
call _7z.SkipData
jmp @b
.unpackInfo.crc:
mov esi, [_7z.StreamsInfo.unpackCRCs]
mov ebx, [_7z.StreamsInfo.unpackCRCsDefined]
mov ecx, [_7z.StreamsInfo.numFolders]
call _7z.ReadHashDigests
jmp @b
.SubStreamsInfo:
cmp [_7z.StreamsInfo.numFolders], 0
jz return.err
cmp [_7z.StreamsInfo.numSubStreams], 0
jnz return.err
mov ebx, [_7z.StreamsInfo.folders]
.ssloop1:
call _7z.ReadNum
cmp eax, kNumUnPackStream
jz .NumUnPackStream
cmp eax, kCRC
jz .break1
cmp eax, kSize
jz .break1
test eax, eax
jz .break1
call _7z.SkipData
jmp .ssloop1
.NumUnPackStream:
xor ecx, ecx
@@:
call _7z.ReadNum
mov edx, [ebx+ecx*4]
mov [edx+_7z.StreamsInfo.numUnPackStreams], eax
inc ecx
cmp ecx, [_7z.StreamsInfo.numFolders]
jb @b
jmp .ssloop1
.break1:
; calculate number of substreams and number of defined digests
xor ecx, ecx
xor ebp, ebp
push 0
push eax
xor eax, eax
.ssloop2:
mov edx, [ebx+ecx*4]
mov edx, [edx+_7z.StreamsInfo.numUnPackStreams]
cmp edx, 1
jz @f
inc ebp
@@:
add eax, edx
jc return.err
cmp edx, 1
jnz @f
push eax
mov eax, [_7z.StreamsInfo.unpackCRCsDefined]
cmp byte [eax+ecx], 0
pop eax
jz @f
xor edx, edx
@@:
add [esp+4], edx
inc ecx
cmp ecx, [_7z.StreamsInfo.numFolders]
jb .ssloop2
mov [_7z.StreamsInfo.numSubStreams], eax
imul ecx, eax, 4+8+1
jecxz .noss1
push eax
call [pgalloc]
pop ecx
test eax, eax
jz return.clear
mov [_7z.StreamsInfo.SubStreamsSizes], eax
lea eax, [eax+ecx*8]
mov [_7z.StreamsInfo.SubStreamsCRCsDefined], eax
add eax, ecx
mov [_7z.StreamsInfo.SubStreamsCRCs], eax
@@:
dec eax
mov byte [eax], 0
loop @b
.noss1:
mov ecx, [esp+4]
jecxz @f
imul ecx, 4+1
call [pgalloc]
test eax, eax
jz return.clear
mov [_7z.StreamsInfo.tmpSubStreamsCRCsDefined], eax
add eax, [esp+4]
mov [_7z.StreamsInfo.tmpSubStreamsCRCs], eax
@@:
test ebp, ebp
jz @f
cmp dword [esp], kSize
jnz return.err
@@:
xor ecx, ecx
mov ebp, [_7z.StreamsInfo.SubStreamsSizes]
.ssloop3:
mov ebx, [_7z.StreamsInfo.folders]
mov ebx, [ebx+ecx*4]
mov eax, [ebx+_7z.StreamsInfo.numUnPackStreams]
dec eax
js .sscont3
push 0
push 0
@@:
dec eax
js @f
push eax
call _7z.ReadNumber
mov [ebp], eax
mov [ebp+4], edx
add ebp, 8
add [esp+4], eax
adc [esp+8], edx
jc return.err
pop eax
jmp @b
@@:
call _7z.GetUnPackSize
sub eax, [esp]
sbb edx, [esp+4]
jc return.err
mov [ebp], eax
mov [ebp+4], edx
add ebp, 8
add esp, 8
.sscont3:
inc ecx
cmp ecx, [_7z.StreamsInfo.numFolders]
jb .ssloop3
pop eax
cmp eax, kSize
jnz @f
call _7z.ReadNum
@@:
cmp eax, kCRC
jz .sscrc
test eax, eax
jz .ssend
call _7z.SkipData
.ssloop4:
call _7z.ReadNum
jmp @b
.sscrc:
pop ecx
push ecx
mov ebx, [_7z.StreamsInfo.tmpSubStreamsCRCsDefined]
mov esi, [_7z.StreamsInfo.tmpSubStreamsCRCs]
call _7z.ReadHashDigests
xor ecx, ecx ; index in out
xor edx, edx ; index in tmp
push -1
pop ebx ; index in folders
.ssloop5:
inc ebx
cmp ebx, [_7z.StreamsInfo.numFolders]
jae .ssloop4
mov eax, [_7z.StreamsInfo.folders]
mov ebp, [eax+ebx*4]
mov ebp, [ebp+_7z.StreamsInfo.numUnPackStreams]
cmp ebp, 1
jnz @f
mov eax, [_7z.StreamsInfo.unpackCRCsDefined]
cmp byte [eax+ebx], 0
jz @f
mov esi, [_7z.StreamsInfo.SubStreamsCRCsDefined]
mov byte [esi+ecx], 1
mov esi, [_7z.StreamsInfo.unpackCRCs]
mov eax, [esi+ebx*4]
mov esi, [_7z.StreamsInfo.SubStreamsCRCs]
mov [esi+ecx*4], eax
inc ecx
jmp .ssloop5
@@:
dec ebp
js .ssloop5
mov esi, [_7z.StreamsInfo.tmpSubStreamsCRCsDefined]
mov al, [esi+edx]
mov esi, [_7z.StreamsInfo.SubStreamsCRCsDefined]
mov [esi+ecx], al
mov esi, [_7z.StreamsInfo.tmpSubStreamsCRCs]
mov eax, [esi+edx*4]
mov esi, [_7z.StreamsInfo.SubStreamsCRCs]
mov [esi+ecx*4], eax
inc edx
inc ecx
jmp @b
.ssend:
mov ecx, [_7z.StreamsInfo.tmpSubStreamsCRCsDefined]
call [pgfree]
and [_7z.StreamsInfo.tmpSubStreamsCRCsDefined], 0
pop ecx
jmp .mainloop
.folders_alloc:
push ecx
add ecx, [_7z.StreamsInfo.folders.size]
sub ecx, [_7z.StreamsInfo.folders.alloc]
jbe @f
push edx
or ecx, 0xFFF
inc ecx
add ecx, [_7z.StreamsInfo.folders.alloc]
mov [_7z.StreamsInfo.folders.alloc], ecx
mov edx, [_7z.StreamsInfo.folders]
call [pgrealloc]
pop edx
test eax, eax
jz return.clear
mov [_7z.StreamsInfo.folders], eax
@@:
pop ecx
mov eax, [_7z.StreamsInfo.folders.size]
add [_7z.StreamsInfo.folders.size], ecx
ret
.error:
mov ecx, [_7z.StreamsInfo.packSizes]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.folders]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.SubStreamsSizes]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.tmpSubStreamsCRCsDefined]
jecxz @f
call [pgfree]
@@:
jmp open_7z.header_error
.clear:
mov ecx, [_7z.StreamsInfo.packSizes]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.folders]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.SubStreamsSizes]
jecxz @f
call [pgfree]
@@:
mov ecx, [_7z.StreamsInfo.tmpSubStreamsCRCsDefined]
jecxz @f
call [pgfree]
@@:
jmp open_7z.clear
uglobal
align 4
_7z.decode.mainbuf dd ?
_7z.decode.pStreams dd ?
_7z.decode.pStreams_def rd 8
_7z.decode.outBufferSize dd ?
_7z.decode.outBufferPtr dd ?
_7z.decode.outBufferRead dd ?
endg
virtual at 0
streamInfo:
.fullSize dq ?
.fillBuf dd ? ; procedure which fills the buffer
.bufSize dd ?
.bufDataLen dd ?
.bufPtr dd ?
.size = $
end virtual
_7z.decode:
; in: ebx->folder, outBufferSize, outBufferPtr
; N.B. We assume that every coder has 1 output (unpacked) stream.
and [.mainbuf], 0
mov [.pStreams], .pStreams_def
mov [error_proc], .error
mov [clear_proc], .clear
call .init
and [.outBufferRead], 0
@@:
push edi
mov eax, [ebx+_7z.StreamsInfo.mainOutStream]
mov esi, [.pStreams]
mov eax, [esi+eax*4]
call fillBuf
mov ecx, [eax+streamInfo.bufSize]
mov esi, [eax+streamInfo.bufPtr]
mov edi, [.outBufferPtr]
add edi, [.outBufferRead]
add [.outBufferRead], ecx
mov edx, ecx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
pop edi
mov eax, [.outBufferRead]
cmp eax, [.outBufferSize]
jb @b
mov ecx, [.pStreams]
cmp ecx, .pStreams_def
jz @f
call [pgfree]
@@:
mov ecx, [.mainbuf]
jecxz @f
call [pgfree]
@@:
mov [error_proc], _7z.ReadAndDecodePackedStreams.error
mov [clear_proc], _7z.ReadAndDecodePackedStreams.clear
ret
.error:
mov ecx, [.pStreams]
cmp ecx, .pStreams_def
jz @f
call [pgfree]
@@:
mov ecx, [.mainbuf]
jecxz @f
call [pgfree]
@@:
jmp _7z.ReadAndDecodePackedStreams.error
.clear:
mov ecx, [.pStreams]
cmp ecx, .pStreams_def
jz @f
call [pgfree]
@@:
mov ecx, [.mainbuf]
jecxz @f
call [pgfree]
@@:
jmp _7z.ReadAndDecodePackedStreams.clear
.init:
; We use stack to keep some information on streams,
; to avoid stack overflow we limit possible number of coders.
; Anyway, in real life maximum number of coders is 5
; (password protection filter + BCJ2 filter + 3 LZMA coders),
; from command line user can define more coders, but
; archive with, say, 32 coders is most likely bogus.
cmp [ebx+_7z.StreamsInfo.numCoders], 128
ja return.err
; allocate space for streams info array
mov eax, .pStreams_def
mov ecx, [ebx+_7z.StreamsInfo.numPackedStreams]
add ecx, [ebx+_7z.StreamsInfo.numCoders]
cmp ecx, 8
jbe @f
shl ecx, 2
call [pgalloc]
test eax, eax
jz return.clear
@@:
mov [.pStreams], eax
; calculate size of buffers required for decoders
xor ecx, ecx
push ecx
mov ebp, [ebx+_7z.StreamsInfo.unpackSizes]
.calcbufsz:
; LZMA decoder: method ID = [size=03] 03 01 01, NumInStreams = NumOutStreams = 1
mov eax, [ebx+_7z.StreamsInfo.fsz+ecx*4]
call _7z.GetCoder
jnc .known_id
.unknown_method_id:
movzx esi, byte [eax+4]
lea ecx, [eax+5]
mov ebx, aUnknownMethod.z
@@:
dec esi
js @f
mov byte [ebx], ' '
inc ebx
mov al, [ecx]
push eax
shr al, 4
cmp al, 10
sbb al, 69h
das
mov [ebx], al
inc ebx
pop eax
and al, 0xF
cmp al, 10
sbb al, 69h
das
mov [ebx], al
inc ebx
inc ecx
jmp @b
@@:
mov byte [ebx], 0
push ContinueBtn
push 1
push aUnknownMethod_ptr
push 1
call [SayErr]
jmp return.clear
iglobal
if lang eq ru
aUnknownMethod db '<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><>⮤:'
else
aUnknownMethod db 'Unknown method:'
end if
.z:
times 16*3+1 db 0
aUnknownMethod_ptr dd aUnknownMethod
endg
.known_id:
movzx esi, byte [eax+4]
lea esi, [esi+eax+17]
call [_7z.GetBufSizeTable+edx*4]
add eax, 3
and al, not 3
add [esp], eax
jc .nomem
cmp dword [ebp+4], 0
jnz @f
cmp dword [ebp], edx
jae @f
mov edx, [ebp]
@@:
add edx, 0xF
and edx, not 0xF
add [esp], edx
jc .nomem
add ebp, 8
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numCoders]
jb .calcbufsz
; add 4 pages for each of not binded input streams
mov ecx, [ebx+_7z.StreamsInfo.numPackedStreams]
shl ecx, 14
add [esp], ecx
;; calculate free RAM
; call [getfreemem]
; sub eax, 64 ; keep at least 64 Kb of free RAM
; jbe .nomem
; pop ecx
; push ecx
; add ecx, 0x3FF
; shr ecx, 10
; cmp eax, ecx
; jae .memok
jmp .memok
.nomem:
push ContinueBtn
push 1
push aNoFreeRam_ptr
push 1
call [SayErr]
jmp return.clear
.memok:
; allocate streamInfos
pop ecx
call [pgalloc]
test eax, eax
jz return.clear
mov [.mainbuf], eax
; initialize streamInfos for decoders
xor ecx, ecx
mov ebp, [ebx+_7z.StreamsInfo.unpackSizes]
mov edx, [.pStreams]
.init1:
mov [edx], eax
add edx, 4
push edx
push dword [ebp]
pop dword [eax]
push dword [ebp+4]
pop dword [eax+4]
and dword [eax+streamInfo.size], 0
push eax
mov eax, [ebx+_7z.StreamsInfo.fsz+ecx*4]
call _7z.GetCoder
movzx esi, byte [eax+4]
lea esi, [esi+eax+17]
call [_7z.GetBufSizeTable+edx*4]
pop esi
push esi
add eax, 3
and al, not 3
add [esp], eax
pop [esi+streamInfo.bufPtr]
push [esi+streamInfo.bufPtr]
cmp dword [ebp+4], 0
jnz @f
cmp dword [ebp], edx
jae @f
mov edx, [ebp]
@@:
add edx, 0xF
and edx, not 0xF
mov [esi+streamInfo.bufSize], edx
and [esi+streamInfo.bufDataLen], 0
pop eax
add eax, edx
pop edx
add ebp, 8
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numCoders]
jb .init1
; initialize streamInfos for input streams
xor ecx, ecx
@@:
mov [edx], eax
add edx, 4
mov esi, [_7z.CurInStream]
inc [_7z.CurInStream]
shl esi, 3
add esi, [_7z.StreamsInfo.packSizes]
push dword [esi]
pop dword [eax]
push dword [esi+4]
pop dword [eax+4]
mov [eax+streamInfo.fillBuf], fillBufFromInStream
lea esi, [eax+streamInfo.size+8]
mov [eax+streamInfo.bufPtr], esi
mov [eax+streamInfo.bufSize], 0x4000 - streamInfo.size - 8
and [eax+streamInfo.bufDataLen], 0
mov esi, dword [_7z.StreamsInfo.dataOffset]
mov dword [eax+streamInfo.size], esi
mov esi, dword [_7z.StreamsInfo.dataOffset+4]
mov dword [eax+streamInfo.size+4], esi
mov esi, [eax]
add dword [_7z.StreamsInfo.dataOffset], esi
mov esi, [eax+4]
adc dword [_7z.StreamsInfo.dataOffset+4], esi
add eax, 0x4000
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numPackedStreams]
jb @b
; initialize links between streams
push -1
mov edx, [ebx+_7z.StreamsInfo.mainOutStream]
xor ecx, ecx
.init_links:
mov eax, [ebx+_7z.StreamsInfo.fsz+edx*4]
movzx esi, byte [eax+4]
cmp ecx, [eax+esi+5]
jb @f
pop ecx
cmp ecx, -1
jz .inited_links
pop edx
jmp .init_links
@@:
push edx
push ecx
@@:
dec edx
js @f
mov eax, [ebx+_7z.StreamsInfo.fsz+edx*4]
movzx esi, byte [eax+4]
add ecx, [eax+esi+5]
jmp @b
@@:
mov esi, [ebx+_7z.StreamsInfo.bindPairs]
mov edx, [ebx+_7z.StreamsInfo.numBindPairs]
@@:
add esi, 8
dec edx
js .link_to_in
cmp ecx, [esi-8]
jnz @b
pop ecx
pop edx
mov eax, [.pStreams]
mov eax, [eax+edx*4]
lea eax, [eax+streamInfo.size+ecx*4]
push edx
inc ecx
push ecx
mov edx, [esi-4]
mov ecx, [.pStreams]
mov ecx, [ecx+edx*4]
mov [eax], ecx
cmp dword [ecx+streamInfo.size], 0
jnz return.err
xor ecx, ecx
jmp .init_links
.link_to_in:
mov esi, [ebx+_7z.StreamsInfo.packedStreams]
mov edx, [ebx+_7z.StreamsInfo.numPackedStreams]
@@:
dec edx
js return.err
cmp ecx, [esi+edx*4]
jnz @b
add edx, [ebx+_7z.StreamsInfo.numCoders]
mov esi, [.pStreams]
mov eax, [esi+edx*4]
pop ecx
pop edx
mov esi, [esi+edx*4]
mov [esi+streamInfo.size+ecx*4], eax
inc ecx
jmp .init_links
.inited_links:
; initialize all decoders
; bool zzz_init_decoder(stream_info* ebp, esi->params, [esi-4]=params_size);
xor ecx, ecx
.init_decoders:
mov eax, [ebx+_7z.StreamsInfo.fsz+ecx*4]
call _7z.GetCoder
movzx esi, byte [eax+4]
mov ebp, [.pStreams]
mov ebp, [ebp+ecx*4]
cmp dword [esi+eax], 0
jz @f
cmp dword [ebp+streamInfo.size], 0
jz return.err
@@:
lea esi, [esi+eax+17]
push ebx ecx edi
xor ebx, ebx
call [_7z.InitTable+edx*4]
pop edi ecx ebx
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numCoders]
jb .init_decoders
ret
fillBuf:
and [eax+streamInfo.bufDataLen], 0
fillBufNozero:
pushad
mov edx, [eax+streamInfo.bufSize]
sub edx, [eax+streamInfo.bufDataLen]
cmp dword [eax+streamInfo.fullSize+4], 0
jnz .full
mov ecx, dword [eax+streamInfo.fullSize]
cmp ecx, edx
jbe @f
.full:
mov ecx, edx
@@:
sub dword [eax+streamInfo.fullSize], ecx
sbb dword [eax+streamInfo.fullSize+4], 0
mov edi, [eax+streamInfo.bufPtr]
add edi, [eax+streamInfo.bufDataLen]
add [eax+streamInfo.bufDataLen], ecx
jmp [eax+streamInfo.fillBuf]
fillBufFromInStream:
push eax
push dword [eax+streamInfo.size+4]
push dword [eax+streamInfo.size]
push 0
push [inStream]
call [seek]
push ecx
push edi
push [inStream]
call [read]
cmp eax, ecx
pop eax
jnz .error
add dword [eax+streamInfo.size], ecx
adc dword [eax+streamInfo.size+4], 0
popad
ret
.error:
push ContinueBtn
push 1
push aReadError_ptr
push 1
call [SayErr]
jmp return.clear
_7z.GetCoder:
; in: eax->coder
; out: edx = coder type
xor edx, edx
; Copy decoder: method ID = [size=01] 00, NumInStreams = NumOutStreams = 1
cmp word [eax+4], 0x0001
jnz @f
cmp dword [eax+6], 1
jz .ret
@@:
inc edx
; LZMA decoder: method ID = [size=03] 03 01 01, NumInStreams = NumOutStreams = 1
cmp dword [eax+4], 0x01010303
jnz @f
cmp dword [eax+8], 1
jz .ret
@@:
inc edx
; PPMD decoder: method ID = [size=03] 03 04 01, NumInStreams = NumOutStreams = 1
cmp dword [eax+4], 0x01040303
jnz @f
cmp dword [eax+8], 1
jz .ret
@@:
inc edx
; BCJ filter: method ID = [size=04] 03 03 01 03, NumInStreams = NumOutStreams = 1
cmp byte [eax+4], 4
jnz @f
cmp dword [eax+5], 0x03010303
jnz @f
cmp dword [eax+9], 1
jz .ret
@@:
inc edx
; BCJ2 filter: method ID = [size=04] 03 03 01 1B, NumInStreams = 4, NumOutStreams = 1
cmp byte [eax+4], 4
jnz @f
cmp dword [eax+5], 0x1B010303
jnz @f
cmp dword [eax+9], 4
jz .ret
@@:
inc edx
; 7z-AES cryptor: method ID = [size=04] 06 F1 07 01, NumInStreams = NumOutStreams = 1
cmp byte [eax+4], 4
jnz @f
cmp dword [eax+5], 0x0107F106
jnz @f
cmp dword [eax+9], 1
jz .ret
KFar 0.41 + KFar_Arc 0.11 git-svn-id: svn://kolibrios.org@631 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-09-20 18:20:58 +02:00
@@:
inc edx
; Deflate decoder: method ID = [size=03] 04 01 08, NumInStreams = NumOutStreams = 1
cmp dword [eax+4], 0x08010403
jnz @f
cmp dword [eax+8], 1
jz .ret
@@:
inc edx
; Deflate64 decoder: method ID = [size=03] 04 01 09, NumInStreams = NumOutStreams = 1
cmp dword [eax+4], 0x09010403
jnz @f
cmp dword [eax+8], 1
jz .ret
KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
@@:
stc
.ret:
ret
iglobal
align 4
label _7z.GetBufSizeTable dword
dd copy_get_buf_size
dd lzma_get_buf_size
dd ppmd_get_buf_size
dd bcj_get_buf_size
dd bcj2_get_buf_size
dd aes7z_get_buf_size
KFar 0.41 + KFar_Arc 0.11 git-svn-id: svn://kolibrios.org@631 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-09-20 18:20:58 +02:00
dd deflate_get_buf_size
dd deflate_get_buf_size
KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
label _7z.InitTable dword
dd copy_init_decoder
dd lzma_init_decoder
dd ppmd_init_decoder
dd bcj_init_decoder
dd bcj2_init_decoder
dd aes7z_init_decoder
KFar 0.41 + KFar_Arc 0.11 git-svn-id: svn://kolibrios.org@631 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-09-20 18:20:58 +02:00
dd deflate_init_decoder
dd deflate64_init_decoder
KFar 0.4 + KFar_Arc 0.1 git-svn-id: svn://kolibrios.org@589 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-07-26 14:45:49 +02:00
endg
copy_get_buf_size:
mov eax, streamInfo.size+8
mov edx, 0x10000
ret
copy_init_decoder:
mov [ebp+streamInfo.fillBuf], copy_fillBuf
and dword [ebp+streamInfo.size+4], 0
ret
copy_fillBuf:
push eax
mov esi, [eax+streamInfo.size+4]
mov eax, [eax+streamInfo.size]
.redo:
push ecx
mov edx, [eax+streamInfo.bufDataLen]
sub edx, esi
cmp ecx, edx
jb @f
mov ecx, edx
@@:
sub [esp], ecx
add esi, [eax+streamInfo.bufPtr]
mov edx, ecx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
pop ecx
jecxz .done
cmp dword [eax+streamInfo.fullSize+4], 0
jnz @f
cmp dword [eax+streamInfo.fullSize], ecx
jb return.err
@@:
call fillBuf
xor esi, esi
jmp .redo
.done:
sub esi, [eax+streamInfo.bufPtr]
pop eax
mov [eax+streamInfo.size+4], esi
popad
ret
; ebp=hPlugin, eax->item, edi->info
getattr_7z:
cmp [eax+file_in_7z.bPseudoFolder], 0
jnz .pseudo
lea esi, [eax+file_in_7z.attr]
movsd
xor eax, eax
stosd
add esi, -(file_in_7z.attr+4) + file_in_7z.CreationTime
mov ecx, 8
rep movsd
ret
.pseudo:
push 0x10 ; attributes: folder
pop eax
stosd
xor eax, eax
stosd
lea esi, [ebp+handle_7z.host_datetime]
push 6
pop ecx
rep movsd
stosd
stosd
ret
virtual at 0
file_handle_7z:
.type dd ?
.context dd ?
.pos dq ?
.base dd ? ; handle of archive
.item dd ? ; pointer to file_in_7z
.mainStream dd ? ; (pointer in context)
.bError db ?
rb 3
.size = $
end virtual
iglobal
align 4
handle_table_7z dd handle_table_7z,handle_table_7z
endg
; ebp=hPlugin, eax->item, edi=mode
open_file_7z:
cmp [eax+file_in_7z.bHasStream], 0
jnz @f
mov eax, empty_7z_handle
ret
@@:
mov ecx, [ebp+handle_7z.password_len]
inc ecx
setnz [bPasswordDefined]
jz @f
dec ecx
lea esi, [ebp+handle_7z.password]
push edi
mov edi, password_unicode
shr ecx, 1
rep movsd
adc ecx, ecx
rep movsw
pop edi
@@:
mov [hOut], ecx
mov [_7z.decode.mainbuf], ecx
mov ecx, [ebp+handle_7z.host]
mov [inStream], ecx
mov [_7z.decode.pStreams], _7z.decode.pStreams_def
push eax
mov [_esp], esp
mov [_ebp], ebp
mov [error_proc], .error
mov [clear_proc], .clear
mov ebx, [ebp+handle_7z.folders]
mov ecx, [eax+file_in_7z.folder]
cmp [ebp+handle_7z.last_folder], ecx
jnz .nolast
mov edx, dword [eax+file_in_7z.folderStart]
sub edx, dword [ebp+handle_7z.last_pos]
mov esi, dword [eax+file_in_7z.folderStart+4]
sbb esi, dword [ebp+handle_7z.last_pos+4]
jb .nolast
xor ecx, ecx
xchg ecx, [ebp+handle_7z.last_context]
mov [_7z.decode.mainbuf], ecx
mov eax, [ebp+handle_7z.last_main_stream]
mov dword [eax+streamInfo.fullSize], edx
mov dword [eax+streamInfo.fullSize+4], esi
or [ebp+handle_7z.last_folder], -1
pop esi
push esi
jmp .commonl
.nolast:
mov ebx, [ebx+ecx*4]
mov eax, [ebx+_7z.StreamsInfo.startPackedStream]
mov [_7z.CurInStream], eax
mov eax, dword [ebx+_7z.StreamsInfo.packOffset]
mov dword [_7z.StreamsInfo.dataOffset], eax
mov eax, dword [ebx+_7z.StreamsInfo.packOffset+4]
mov dword [_7z.StreamsInfo.dataOffset+4], eax
mov eax, [ebp+handle_7z.packSizes]
mov [_7z.StreamsInfo.packSizes], eax
push ebp
call _7z.decode.init
pop ebp
mov eax, [ebx+_7z.StreamsInfo.mainOutStream]
mov esi, [_7z.decode.pStreams]
mov eax, [esi+eax*4]
pop esi
push esi
mov ecx, dword [esi+file_in_7z.folderStart]
mov dword [eax+streamInfo.fullSize], ecx
mov ecx, dword [esi+file_in_7z.folderStart+4]
mov dword [eax+streamInfo.fullSize+4], ecx
.commonl:
call skip_7z
mov ecx, dword [esi+file_in_7z.UnPackSize]
mov dword [eax+streamInfo.fullSize], ecx
mov edx, dword [esi+file_in_7z.UnPackSize+4]
mov dword [eax+streamInfo.fullSize+4], edx
test edx, edx
jnz .nomemstream
if defined LIMIT_FOR_MEM_STREAM
cmp ecx, LIMIT_FOR_MEM_STREAM
ja .nomemstream
end if
push eax ecx
add ecx, 0x3FF
shr ecx, 10 ; get size in Kb
call [getfreemem]
shr eax, 2
cmp ecx, eax
pop ecx eax
ja .nomemstream
; create memory stream and unpack to memory
push eax ecx
add ecx, mem_stream.buf
call [pgalloc]
test eax, eax
jz return.clear
mov edi, eax
pop ecx
push edi
mov [hOut], eax
xor eax, eax ; type_mem_stream
stosd ; mem_stream.type
mov eax, ecx
stosd ; mem_stream.size
xor eax, eax
stosd ; mem_stream.pos
mov eax, [esp+4]
push esi
push ecx edi
call read_7z_to_buf
pop esi ecx
mov ebx, [esp+12]
cmp [ebx+file_in_7z.bCRCDefined], 0
jz @f
call crc
cmp eax, [ebx+file_in_7z.FileCRC]
jnz return.err
@@:
pop esi
xor ecx, ecx
xchg ecx, [_7z.decode.mainbuf]
xchg ecx, [ebp+handle_7z.last_context]
jecxz @f
call [pgfree]
@@:
and [hOut], 0
mov eax, [esi+file_in_7z.folder]
mov [ebp+handle_7z.last_folder], eax
mov eax, [esp+4]
mov [ebp+handle_7z.last_main_stream], eax
mov ecx, dword [esi+file_in_7z.UnPackSize]
add ecx, dword [esi+file_in_7z.folderStart]
mov dword [ebp+handle_7z.last_pos], ecx
mov ecx, dword [esi+file_in_7z.UnPackSize+4]
adc ecx, dword [esi+file_in_7z.folderStart+4]
mov dword [ebp+handle_7z.last_pos+4], ecx
call .done
pop eax edi ecx
ret
.nomemstream:
mov edi, eax
push esi
mov esi, handle_table_7z
push file_handle_7z.size
pop ecx
call alloc_handle
pop esi
test eax, eax
jz .clear
mov [eax+file_handle_7z.type], type_7z
xor edx, edx
mov dword [eax+file_handle_7z.pos], edx
mov dword [eax+file_handle_7z.pos+4], edx
mov [eax+file_handle_7z.bError], dl
xchg edx, [_7z.decode.mainbuf]
mov [eax+file_handle_7z.context], edx
mov [eax+file_handle_7z.mainStream], edi
mov [eax+file_handle_7z.base], ebp
mov [eax+file_handle_7z.item], esi
push eax
call .done
pop eax ecx
ret
.done:
cmp [bPasswordDefined], 0
jz @f
mov ecx, [password_size]
mov [ebp+handle_7z.password_len], ecx
mov esi, password_unicode
lea edi, [ebp+handle_7z.password]
shr ecx, 1
rep movsd
adc ecx, ecx
rep movsw
@@:
jmp .clear
.error:
cmp [bPasswordDefined], 0
jz .realerror
push CancelPassBtn
push 2
push aArchiveDataErrorPass_ptr
push 1
call [SayErr]
cmp al, 1
jnz .clear
; user wants to re-enter password
call .clear
pop eax
jmp open_file_7z
.realerror:
push ContinueBtn
push 1
push aArchiveDataError_ptr
push 1
call [SayErr]
.clear:
mov ecx, [_7z.decode.pStreams]
cmp ecx, _7z.decode.pStreams_def
jz @f
call [pgfree]
@@:
mov ecx, [_7z.decode.mainbuf]
jecxz @f
call [pgfree]
@@:
mov ecx, [hOut]
jecxz @f
call [pgfree]
@@:
cmp esp, [_esp]
jnz @f
pop eax
@@:
xor eax, eax
ret
read_7z_to_buf:
mov esi, [eax+streamInfo.bufDataLen]
cmp esi, [eax+streamInfo.bufSize]
jnz @f
xor esi, esi
mov [eax+streamInfo.bufDataLen], esi
@@:
call fillBufNozero
mov ecx, [eax+streamInfo.bufDataLen]
sub ecx, esi
add esi, [eax+streamInfo.bufPtr]
mov edx, ecx
shr ecx, 2
rep movsd
mov ecx, edx
and ecx, 3
rep movsb
cmp dword [eax+streamInfo.fullSize], 0
jnz read_7z_to_buf
ret
skip_7z:
push edx
mov edx, [eax+streamInfo.bufDataLen]
cmp edx, [eax+streamInfo.bufSize]
jnz @f
and [eax+streamInfo.bufDataLen], 0
@@:
pop edx
call fillBufNozero
cmp dword [eax+streamInfo.fullSize], 0
jnz skip_7z
cmp dword [eax+streamInfo.fullSize+4], 0
jnz skip_7z
ret
; unsigned __stdcall read(HANDLE hFile, void* buf, unsigned size);
read_7z:
mov eax, [ebx+file_handle_7z.mainStream]
test eax, eax
jz .ret ; empty stream - return 0 bytes read
cmp [ebx+file_handle_7z.bError], 0
jnz .reterr
mov ecx, [ebx+file_handle_7z.base]
mov ecx, [ecx+handle_7z.host]
mov [inStream], ecx
mov edi, [esp+8]
mov ecx, [esp+12]
mov dword [eax+streamInfo.fullSize], ecx
and dword [eax+streamInfo.fullSize+4], 0
jecxz .nodata
mov [_esp], esp
mov [_ebp], ebp
mov [error_proc], .error
mov [clear_proc], .clear ; should not be called
mov esi, [ebx+file_handle_7z.item]
mov edx, dword [esi+file_in_7z.UnPackSize]
mov esi, dword [esi+file_in_7z.UnPackSize+4]
sub edx, dword [ebx+file_handle_7z.pos]
sbb esi, dword [ebx+file_handle_7z.pos+4]
jnz .do
cmp edx, ecx
jae .do
mov dword [eax+streamInfo.fullSize], edx
.do:
call read_7z_to_buf
.nodata:
sub edi, [esp+8]
mov eax, edi
add dword [ebx+file_handle_7z.pos], eax
adc dword [ebx+file_handle_7z.pos+4], 0
.ret:
ret 12
.error:
.clear:
mov ebx, [esp+4]
mov [ebx+file_handle_7z.bError], 1
push ContinueBtn
push 1
push aArchiveDataError_ptr
push 1
call [SayErr]
.reterr:
or eax, -1
ret 12
; void __stdcall setpos(HANDLE hFile, __int64 pos);
setpos_7z:
cmp [ebx+file_handle_7z.context], 0
jz .ret
mov edi, [ebx+file_handle_7z.base]
mov ecx, [edi+handle_7z.host]
mov [inStream], ecx
mov [_esp], esp
mov [_ebp], ebp
mov [error_proc], read_7z.error
mov [clear_proc], read_7z.clear ; should not be called
cmp [ebx+file_handle_7z.bError], 0
jnz .backward ; if was error, force reinitialization
mov ecx, [esp+8]
mov edx, [esp+12]
sub ecx, dword [ebx+file_handle_7z.pos]
sbb edx, dword [ebx+file_handle_7z.pos+4]
jb .backward
; move forward - skip some data
mov eax, [ebx+file_handle_7z.mainStream]
mov dword [eax+streamInfo.fullSize], ecx
mov dword [eax+streamInfo.fullSize+4], edx
call skip_7z
add dword [ebx+file_handle_7z.pos], ecx
adc dword [ebx+file_handle_7z.pos], edx
.ret:
ret 12
.backward:
; move backward - reinitialize and skip start data
mov [ebx+file_handle_7z.bError], 0
mov ebp, [ebx+file_handle_7z.context]
mov eax, [ebx+file_handle_7z.item]
mov ebx, [edi+handle_7z.folders]
mov eax, [eax+file_in_7z.folder]
mov ebx, [ebx+eax*4]
; initialize streamInfos for decoders
xor ecx, ecx
mov esi, [ebx+_7z.StreamsInfo.unpackSizes]
@@:
lodsd
mov [ebp], eax
lodsd
mov [ebp+4], eax
and [ebp+streamInfo.bufDataLen], 0
push esi
mov eax, [ebx+_7z.StreamsInfo.fsz+ecx*4]
call _7z.GetCoder
movzx esi, byte [eax+4]
lea esi, [esi+eax+17]
push ebx ecx edi
mov bl, 1
call [_7z.InitTable+edx*4]
pop edi ecx ebx esi
mov edx, [ebp+streamInfo.bufSize]
mov ebp, [ebp+streamInfo.bufPtr]
add ebp, edx
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numCoders]
jb @b
; initialize streamInfos for input streams
xor ecx, ecx
mov esi, [ebx+_7z.StreamsInfo.startPackedStream]
shl esi, 3
add esi, [edi+handle_7z.packSizes]
mov edi, dword [ebx+_7z.StreamsInfo.packOffset]
mov edx, dword [ebx+_7z.StreamsInfo.packOffset+4]
@@:
mov dword [ebp+streamInfo.size], edi
mov dword [ebp+streamInfo.size+4], edx
and [ebp+streamInfo.bufDataLen], 0
lodsd
add edi, eax
mov [ebp], eax
lodsd
adc edx, eax
mov [ebp+4], eax
add ebp, 0x4000
inc ecx
cmp ecx, [ebx+_7z.StreamsInfo.numPackedStreams]
jb @b
mov ebx, [esp+4]
mov esi, [ebx+file_handle_7z.item]
mov eax, [ebx+file_handle_7z.mainStream]
mov ecx, dword [esi+file_in_7z.folderStart]
add ecx, [esp+8]
mov dword [eax+streamInfo.fullSize], ecx
mov ecx, dword [esi+file_in_7z.folderStart+4]
adc ecx, [esp+12]
mov dword [eax+streamInfo.fullSize+4], ecx
and dword [ebx+file_handle_7z.pos], 0
and dword [ebx+file_handle_7z.pos+4], 0
and [eax+streamInfo.bufDataLen], 0
call skip_7z
mov eax, [esp+8]
mov dword [ebx+file_handle_7z.pos], eax
mov eax, [esp+12]
mov dword [ebx+file_handle_7z.pos+4], eax
ret 12
close_file_7z:
mov ecx, [ebx+file_handle_7z.context]
jecxz .ret
cmp [ebx+file_handle_7z.bError], 0
jnz @f
push ebp
mov ebp, [ebx+file_handle_7z.base]
xchg ecx, [ebp+handle_7z.last_context]
mov eax, [ebx+file_handle_7z.item]
mov edx, [eax+file_in_7z.folder]
mov [ebp+handle_7z.last_folder], edx
mov edx, [ebx+file_handle_7z.mainStream]
mov [ebp+handle_7z.last_main_stream], edx
mov edx, dword [eax+file_in_7z.folderStart+4]
mov eax, dword [eax+file_in_7z.folderStart]
add eax, dword [ebx+file_handle_7z.pos]
adc edx, dword [ebx+file_handle_7z.pos+4]
mov dword [ebp+handle_7z.last_pos], eax
mov dword [ebp+handle_7z.last_pos+4], edx
pop ebp
@@:
jecxz @f
call [pgfree]
@@:
mov esi, ebx
call free_handle
.ret:
ret 4
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