Function at 0x10012f20
Capabilities:
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 8
push ebx
push esi
push edi
mov edi, ecx
cmp dword [edi], 0xffffffff
jne 0x10012f3f
push str.BIsOpen__
push 0x13fa
jmp 0x10013015
mov esi, dword [ebp + 0xc]
mov ecx, closesocket
sub ecx, dword [edi + 0x10]
mov dword [ebp - 8], ecx
cmp esi, ecx
jbe 0x10012fd2
mov eax, dword [ebp + 0x10]
test eax, eax
je 0x10012f62
mov dword [eax], 0
xor edx, edx
mov dword [ebp + 0xc], edx
test esi, esi
je 0x10012fae
mov ebx, dword [ebp + 8]
mov edi, edi
lea eax, [ebp + 8]
mov dword [ebp + 8], 0
push eax
cmp ecx, esi
mov eax, esi
cmovb eax, ecx
mov ecx, edi
push eax
push ebx
call fcn.10012f20
test al, al
je 0x10013027
mov eax, dword [ebp + 8]
mov edx, dword [ebp + 0xc]
test eax, eax
je 0x10012fab
mov ecx, dword [ebp - 8]
add edx, eax
add ebx, eax
mov dword [ebp + 0xc], edx
sub esi, eax
jne 0x10012f70
mov eax, dword [ebp + 0x10]
test eax, eax
jne 0x10012fc5
test esi, esi
je 0x10013123
pop edi
pop esi
xor al, al
pop ebx
mov esp, ebp
pop ebp
ret 0xc
pop edi
pop esi
mov dword [eax], edx
mov al, 1
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp esi, 0x7fffffff
jb 0x10012ff6
push str.cubBytesToRead___INT32_MAX
push 0x141a
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.100236d0
add esp, 0xc
test al, al
jne 0x10012ff6
int3
cmp byte [edi + 0x2c], 0
je 0x1001309b
xor edx, edx
mov eax, esi
div dword [edi + 0x30]
test edx, edx
je 0x10013032
push str.CFileReader::Read_must_be_called_with_a_cubData_value_that_is_a_multiple_of_the_sector_size_when_using_unbuffered_IO
push 0x1421
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.100236d0
add esp, 0xc
test al, al
jne 0x10013027
int3
pop edi
pop esi
xor al, al
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp byte [0x10074f95], 0
jne 0x10013067
test dword [ebp + 8], 0xfff
je 0x10013067
push str.Unbuffered_read_should_be_called_with_pvData_buffer_that_is_aligned_to_system_page_size__4kb_
push 0x1426
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x10074f95], 1
call fcn.100236d0
add esp, 0xc
test al, al
jne 0x10013067
int3
cmp byte [0x10074f96], 0
jne 0x1001309b
test esi, 0xfff
je 0x1001309b
push str.Unbuffered_read_should_be_called_with_cubData_length_that_is_aligned_to_system_page_size__4kb_
push 0x1427
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x10074f96], 1
call fcn.100236d0
add esp, 0xc
test al, al
jne 0x1001309b
int3
push dword [edi + 0xc]
xor ebx, ebx
mov dword [ebp - 4], esi
push dword [edi + 8]
mov ecx, edi
mov dword [ebp + 0xc], ebx
call fcn.100115b0
mov ecx, dword [edi + 8]
test al, al
je 0x10013114
mov edx, dword [edi + 0x18]
mov ebx, edx
mov eax, dword [edi + 0x1c]
sub ebx, ecx
mov dword [ebp + 0xc], 0
sbb eax, dword [edi + 0xc]
add ebx, dword [edi + 0x20]
adc eax, dword [edi + 0x24]
cmp dword [ebp + 0xc], eax
ja 0x100130e3
jb 0x100130dc
cmp esi, ebx
jae 0x100130e3
mov ebx, esi
mov dword [ebp + 0xc], esi
jmp 0x100130ed
mov ebx, edx
sub ebx, ecx
add ebx, dword [edi + 0x20]
mov dword [ebp + 0xc], ebx
mov eax, dword [edi + 0x28]
sub eax, edx
push ebx
add eax, ecx
push eax
push dword [ebp + 8]
call fcn.100337b0
add esp, 0xc
mov eax, esi
add dword [edi + 8], ebx
mov ecx, dword [edi + 8]
adc dword [edi + 0xc], 0
sub eax, ebx
mov dword [ebp - 4], eax
jmp 0x10013116
mov eax, esi
test eax, eax
jne 0x1001312e
mov eax, dword [ebp + 0x10]
test eax, eax
je 0x10013123
mov dword [eax], esi
pop edi
pop esi
mov al, 1
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp dword [edi + 0x28], 0
mov edx, eax
je 0x10013146
cmp dword [edi + 0x14], 0
jb 0x10013146
ja 0x10013143
cmp dword [edi + 0x10], eax
jbe 0x10013146
mov edx, dword [edi + 0x10]
mov eax, dword [edi + 0x10]
or eax, dword [edi + 0x14]
je 0x1001320c
xor eax, eax
cmp edx, dword [edi + 0x10]
jne 0x1001320c
cmp eax, dword [edi + 0x14]
jne 0x1001320c
mov eax, dword [edi + 0xc]
push 0
mov dword [edi + 0x1c], eax
lea eax, [ebp - 8]
push eax
push edx
push dword [edi + 0x28]
mov dword [edi + 0x18], ecx
push dword [edi]
mov dword [ebp - 8], 0
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x100131db
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
sete bl
xor ecx, ecx
mov dword [ebp - 8], ecx
test eax, eax
je 0x100131e3
xor edx, edx
xor ecx, ecx
test bl, bl
cmovne ecx, edx
cmp dword [ebp - 4], ecx
mov eax, ecx
cmovb eax, dword [ebp - 4]
add dword [edi + 8], eax
mov eax, dword [ebp + 0xc]
adc dword [edi + 0xc], 0
add eax, ecx
mov ecx, dword [ebp + 0x10]
test ecx, ecx
je 0x10013253
cmp esi, eax
pop edi
cmovb eax, esi
mov dword [ecx], eax
mov al, bl
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0xc
mov ecx, dword [ebp - 8]
mov bl, 1
mov dword [ebp - 8], ecx
mov eax, ecx
cdq
mov dword [edi + 0x20], eax
mov eax, dword [ebp - 4]
cmp ecx, eax
mov dword [edi + 0x24], edx
cmovb eax, ecx
push eax
push dword [edi + 0x28]
mov eax, dword [ebp + 0xc]
add eax, dword [ebp + 8]
push eax
call fcn.100337b0
mov edx, dword [ebp - 8]
add esp, 0xc
jmp 0x100131a2
push 0
lea eax, [ebp - 8]
mov dword [ebp - 8], 0
push eax
mov eax, dword [ebp + 8]
push edx
add eax, ebx
push eax
push dword [edi]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x10013236
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor edx, edx
jmp 0x1001323b
mov edx, dword [ebp - 8]
xor eax, eax
test eax, eax
mov dword [edi + 0x20], 0
mov dword [edi + 0x24], 0
sete bl
jmp 0x100131a2
xor ecx, ecx
movzx ebx, bl
cmp esi, eax
pop edi
cmova ebx, ecx
pop esi
mov al, bl
pop ebx
mov esp, ebp
pop ebp
ret 0xc