Function at 0x49c550
Capabilities:
Get disk size
Get file size
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x15c
mov eax, dword [ebp + 0x20]
mov ecx, dword [ebp + 0x1c]
push ebx
push esi
push edi
push eax
push eax
call fcn.004aae50
push 0
push dword [ebp + 8]
lea ecx, [ebp - 0x5c]
mov byte [ebp - 0x14], 0
mov dword [ebp - 0x40], 0xffffffff
mov dword [ebp - 0x30], 0
mov dword [ebp - 0x2c], 0
mov dword [ebp - 0x18], 0
mov dword [ebp - 0x5c], vtable.CPathString.0
mov dword [ebp - 0x54], 0
call fcn.0049c260
mov eax, dword [ebp - 0x40]
mov esi, dword [ebp - 0x58]
mov ebx, dword [ebp + 0x24]
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49c5cc
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49c5cc
call edi
mov eax, ebx
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x38], 0
mov dword [ebp - 0x34], 0
and eax, 0xffffffb3
je 0x49c61d
push eax
push str.unsupported_flags_0x_x_passed_to_CFileReader::BOpenFile
push 0x138c
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.00536d20
add esp, 0x10
test al, al
jne 0x49c61a
int3
and ebx, 0x4c
cmp byte [ebp - 0x14], 0
je 0x49c728
xor edi, edi
mov dword [ebp - 0x50], vtable.CPathString.0
push edi
push esi
lea ecx, [ebp - 0x50]
mov dword [ebp - 0x48], edi
call fcn.0049c260
push 0x3a
push dword [ebp - 0x4c]
call fcn.0054eba0
add esp, 8
test eax, eax
je 0x49c6a6
mov ecx, dword [ebp - 0x4c]
mov edx, 0x100
sub eax, ecx
lea edi, [eax + 2]
mov eax, 0xff
cmp edi, eax
cmova edi, eax
cmp edi, edx
mov eax, edi
cmova eax, edx
push eax
push ecx
lea eax, [ebp - 0x15c]
push eax
call fcn.00547620
add esp, 0xc
mov byte [ebp + edi - 0x15c], 0
lea eax, [ebp - 4]
push eax
lea eax, [ebp - 0x44]
push eax
lea eax, [ebp + 0x24]
push eax
lea eax, [ebp - 8]
push eax
lea eax, [ebp - 0x15c]
push eax
call dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceA]
xor edi, edi
jmp 0x49c6be
lea eax, [ebp - 4]
push eax
lea eax, [ebp - 0x44]
push eax
lea eax, [ebp + 0x24]
push eax
lea eax, [ebp - 8]
push eax
push 0
call dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceA]
test eax, eax
mov dword [ebp - 0x50], vtable.CPathString.0
mov eax, dword [ebp - 0x48]
cmovne edi, dword [ebp + 0x24]
test eax, eax
je 0x49c6e2
push eax
call fcn.0054d225
add esp, 4
mov dword [ebp - 0x48], 0
mov eax, dword [ebp - 0x4c]
test eax, eax
je 0x49c6f9
push eax
call fcn.0054d225
add esp, 4
mov dword [ebp - 0x4c], 0
mov dword [ebp - 0x10], edi
test edi, edi
je 0x49c705
or ebx, 2
jmp 0x49c722
push esi
push str.Failed_to_get_sector_size_for_drive_file__s_is_on__not_using_unbuffered_IO
push 0x139b
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.00536d20
add esp, 0x10
test al, al
jne 0x49c722
int3
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
lea eax, [ebp - 0x40]
test bl, 0x40
push eax
push ebx
mov ecx, 0
mov eax, 3
push 0
cmovne eax, ecx
push eax
push 1
push esi
call fcn.0049b920
add esp, 0x18
test eax, eax
jne 0x49c759
cmp dword [ebp - 0x40], 0xffffffff
je 0x49c759
xor bl, bl
jmp 0x49c75b
mov bl, 1
mov eax, dword [ebp - 0x54]
mov dword [ebp - 0x5c], vtable.CPathString.0
test eax, eax
je 0x49c779
push eax
call fcn.0054d225
add esp, 4
mov dword [ebp - 0x54], 0
test esi, esi
je 0x49c78d
push esi
call fcn.0054d225
add esp, 4
mov dword [ebp - 0x58], 0
test bl, bl
jne 0x49cc53
lea eax, [ebp - 0x4c]
xor ebx, ebx
push eax
push dword [ebp - 0x40]
xor esi, esi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x49c7b5
call edi
test eax, eax
je 0x49c7bb
mov dword [ebp - 0x48], ebx
jmp 0x49c7be
mov ebx, dword [ebp - 0x4c]
mov esi, dword [ebp - 0x48]
mov dword [ebp - 0x48], esi
mov edi, dword [ebp + 0x10]
test edi, edi
ja 0x49cc53
mov esi, dword [ebp + 0xc]
jb 0x49c7d6
cmp esi, ebx
ja 0x49cc53
mov eax, esi
or eax, edi
je 0x49c8a2
cmp dword [ebp - 0x40], 0xffffffff
jne 0x49c7f5
push str.BIsOpen__
push 0x1455
jmp 0x49cc41
cmp byte [ebp - 0x14], 0
je 0x49c81f
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x49c81f
push 0
push eax
push edi
push esi
call fcn.0054e070
or eax, edx
je 0x49c81f
push str.Seeking_to_a_position_which_is_not_sector_aligned_will_break_unbuffered_io
push 0x145d
jmp 0x49cc41
cmp dword [ebp - 0x18], 0
je 0x49c85f
mov edx, dword [ebp - 0x24]
cmp edi, edx
jb 0x49c851
mov eax, dword [ebp - 0x28]
ja 0x49c835
cmp esi, eax
jb 0x49c851
mov ecx, dword [ebp - 0x20]
add ecx, eax
mov eax, dword [ebp - 0x1c]
adc eax, edx
cmp edi, eax
ja 0x49c851
jb 0x49c849
cmp esi, ecx
jae 0x49c851
mov dword [ebp - 0x38], esi
mov dword [ebp - 0x34], edi
jmp 0x49c8a2
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
push 0
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], edi
push eax
push esi
push dword [ebp - 0x40]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov dword [ebp - 4], eax
cmp eax, 0xffffffff
jne 0x49c893
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49c893
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49c8a2
jmp 0x49cc53
mov eax, dword [ebp + 0x24]
xor ecx, ecx
or ecx, dword [ebp - 4]
cdq
mov dword [ebp - 0x38], ecx
mov dword [ebp - 0x34], eax
mov eax, dword [ebp + 0x18]
sub ebx, esi
mov ecx, 0
sbb ecx, edi
cmp eax, ecx
ja 0x49c8bb
mov esi, dword [ebp + 0x14]
jb 0x49c8bf
cmp esi, ebx
jb 0x49c8bf
mov esi, ebx
mov eax, ecx
test eax, eax
ja 0x49cc53
jb 0x49cc37
cmp esi, 0x7ffffffe
ja 0x49cc53
test eax, eax
jne 0x49cc37
cmp esi, 0x40000000
ja 0x49cc37
mov edi, dword [ebp + 0x1c]
mov ecx, edi
call fcn.0046c830
mov eax, dword [ebp + 0x20]
mov ecx, edi
movzx ebx, al
xor ebx, 1
add ebx, esi
push ebx
mov dword [ebp - 0x48], ebx
call fcn.004a95b0
test ebx, ebx
je 0x49cc33
push ebx
mov ecx, edi
call fcn.004a9280
test al, al
je 0x49cc53
mov eax, dword [ebp + 0x1c]
mov edi, dword [edi + 0x14]
add edi, dword [eax + 4]
mov dword [ebp - 8], edi
je 0x49cc53
cmp dword [ebp - 0x40], 0xffffffff
mov ebx, edi
jne 0x49c94e
push str.BIsOpen__
push 0x13d3
jmp 0x49cc41
mov ecx, closesocket
sub ecx, dword [ebp - 0x30]
mov dword [ebp - 4], ecx
cmp esi, ecx
jbe 0x49c9af
xor edi, edi
test esi, esi
je 0x49cbfa
jmp 0x49c970
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], 0
push eax
cmp ecx, esi
mov eax, esi
cmovb eax, ecx
lea ecx, [ebp - 0x40]
push eax
push ebx
call fcn.0049cdb0
test al, al
je 0x49cc53
mov eax, dword [ebp + 0x24]
test eax, eax
je 0x49cbfa
mov ecx, dword [ebp - 4]
add edi, eax
add ebx, eax
sub esi, eax
jne 0x49c970
jmp 0x49cbfa
cmp esi, 0x7fffffff
jb 0x49c9d3
push str.cubBytesToRead___INT32_MAX
push 0x13f3
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.00536d10
add esp, 0xc
test al, al
jne 0x49c9d3
int3
cmp byte [ebp - 0x14], 0
je 0x49ca5f
xor edx, edx
mov eax, esi
div dword [ebp - 0x10]
test edx, edx
je 0x49c9f7
push str.CFileReader::Read_must_be_called_with_a_cubData_value_that_is_a_multiple_of_the_sector_size_when_using_unbuffered_IO
push 0x13fa
jmp 0x49cc41
cmp byte [0x7da2d5], 0
jne 0x49ca2b
test edi, 0xfff
je 0x49ca2b
push str.Unbuffered_read_should_be_called_with_pvData_buffer_that_is_aligned_to_system_page_size__4kb_
push 0x13ff
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
mov byte [0x7da2d5], 1
call fcn.00536d10
add esp, 0xc
test al, al
jne 0x49ca2b
int3
cmp byte [0x7da2d6], 0
jne 0x49ca5f
test esi, 0xfff
je 0x49ca5f
push str.Unbuffered_read_should_be_called_with_cubData_length_that_is_aligned_to_system_page_size__4kb_
push 0x1400
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
mov byte [0x7da2d6], 1
call fcn.00536d10
add esp, 0xc
test al, al
jne 0x49ca5f
int3
mov eax, dword [ebp - 0x18]
mov edx, esi
mov ebx, dword [ebp - 0x34]
xor edi, edi
mov ecx, dword [ebp - 0x38]
mov dword [ebp - 0x44], edx
test eax, eax
je 0x49caf7
cmp ebx, dword [ebp - 0x24]
jb 0x49caf7
mov eax, dword [ebp - 0x28]
ja 0x49ca85
cmp ecx, eax
jb 0x49caf4
mov edx, dword [ebp - 0x20]
mov dword [ebp + 0x24], edx
mov edx, esi
add dword [ebp + 0x24], eax
mov eax, dword [ebp - 0x1c]
adc eax, dword [ebp - 0x24]
cmp ebx, eax
ja 0x49caf4
jb 0x49caa1
cmp ecx, dword [ebp + 0x24]
jae 0x49caf4
mov edx, dword [ebp - 0x20]
mov edi, dword [ebp - 0x1c]
sub edx, ecx
mov eax, dword [ebp - 0x28]
sbb edi, ebx
add edx, eax
adc edi, dword [ebp - 0x24]
xor ebx, ebx
cmp ebx, edi
ja 0x49cac3
jb 0x49cabf
cmp esi, edx
jae 0x49cac3
mov edi, esi
jmp 0x49caca
mov edi, dword [ebp - 0x20]
sub edi, ecx
add edi, eax
sub ecx, eax
add ecx, dword [ebp - 0x18]
push edi
push ecx
push dword [ebp - 8]
call fcn.0054f320
mov ecx, dword [ebp - 0x38]
add esp, 0xc
mov ebx, dword [ebp - 0x34]
add ecx, edi
mov edx, esi
mov dword [ebp - 0x38], ecx
adc ebx, 0
sub edx, edi
mov dword [ebp - 0x34], ebx
mov dword [ebp - 0x44], edx
mov eax, dword [ebp - 0x18]
test edx, edx
jne 0x49cb02
mov edi, esi
jmp 0x49cbfa
mov dword [ebp + 0x24], edx
test eax, eax
je 0x49cb1b
cmp dword [ebp - 0x2c], 0
jb 0x49cb1b
ja 0x49cb16
cmp dword [ebp - 0x30], edx
jbe 0x49cb1b
mov edx, dword [ebp - 0x30]
jmp 0x49cb1e
mov edx, dword [ebp + 0x24]
mov eax, dword [ebp - 0x30]
or eax, dword [ebp - 0x2c]
je 0x49cb91
xor eax, eax
cmp edx, dword [ebp - 0x30]
jne 0x49cb91
cmp eax, dword [ebp - 0x2c]
jne 0x49cb91
push eax
mov dword [ebp - 4], eax
lea eax, [ebp - 4]
push eax
push edx
push dword [ebp - 0x18]
mov dword [ebp - 0x28], ecx
push dword [ebp - 0x40]
mov dword [ebp - 0x24], ebx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x49cb65
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
sete byte [ebp + 0x27]
xor ebx, ebx
test eax, eax
jne 0x49cbd5
jmp 0x49cb6c
mov ebx, dword [ebp - 4]
mov byte [ebp + 0x27], 1
mov eax, ebx
cdq
mov dword [ebp - 0x20], eax
mov eax, dword [ebp - 0x44]
cmp ebx, eax
mov dword [ebp - 0x1c], edx
cmovb eax, ebx
push eax
push dword [ebp - 0x18]
mov eax, dword [ebp - 8]
add eax, edi
push eax
call fcn.0054f320
add esp, 0xc
jmp 0x49cbd5
push 0
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], 0
push eax
mov eax, dword [ebp - 8]
push edx
add eax, edi
push eax
push dword [ebp - 0x40]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x49cbbc
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor ebx, ebx
jmp 0x49cbc1
mov ebx, dword [ebp + 0x24]
xor eax, eax
test eax, eax
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
sete byte [ebp + 0x27]
xor ecx, ecx
cmp byte [ebp + 0x27], cl
cmovne ecx, ebx
cmp dword [ebp - 0x44], ecx
mov eax, ecx
cmovb eax, dword [ebp - 0x44]
add dword [ebp - 0x38], eax
adc dword [ebp - 0x34], 0
add edi, ecx
cmp esi, edi
cmovb edi, esi
cmp byte [ebp + 0x27], 0
je 0x49cc53
cmp byte [ebp + 0x20], 0
jne 0x49cc28
cmp edi, dword [ebp - 0x48]
jb 0x49cc21
push str.cbActual____uint32_nBufSizeWithTerminator
push 0x948
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.00536d10
add esp, 0xc
test al, al
jne 0x49cc21
int3
mov eax, dword [ebp - 8]
mov byte [eax + edi], 0
mov ecx, dword [ebp + 0x1c]
push edi
push 0
call fcn.004aad60
mov bl, 1
jmp 0x49cc55
push str.cbToRead___1024__1024__1024
push 0x928
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.00536d10
add esp, 0xc
test al, al
jne 0x49cc53
int3
xor bl, bl
mov eax, dword [ebp - 0x40]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49cc7c
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49cc75
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [ebp - 0x40], 0xffffffff
mov eax, dword [ebp - 0x18]
mov dword [ebp - 0x38], 0
mov dword [ebp - 0x34], 0
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
test eax, eax
je 0x49ccb6
push eax
call fcn.0054d225
add esp, 4
pop edi
pop esi
mov al, bl
pop ebx
mov esp, ebp
pop ebp
ret