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/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2016 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <pemagine/pemagine.h>
#include <ntapi/nt_sysinfo.h>
#include <ntapi/nt_memory.h>
#include <ntapi/ntapi.h>
#include <ntapi/nt_atomic.h>
#include "ntapi_impl.h"
int32_t __stdcall __ntapi_tt_get_system_directory_native_path(
__out nt_mem_sec_name * buffer,
__in uint32_t buffer_size,
__in wchar16_t * base_name,
__in uint32_t base_name_size,
__out nt_unicode_string * nt_path __optional)
{
int32_t status;
wchar16_t * wch_src;
wchar16_t * wch_dst;
wchar16_t * wch_cap;
size_t maxlen_saved;
size_t info_size;
/* validation */
if (!buffer || !buffer_size)
return NT_STATUS_BUFFER_TOO_SMALL;
else if (base_name && !base_name_size)
return NT_STATUS_INVALID_PARAMETER_MIX;
/* init buffer */
buffer->section_name.strlen = 0;
buffer->section_name.maxlen = (uint16_t)(buffer_size - sizeof(nt_unicode_string));
buffer->section_name.buffer = buffer->section_name_buffer;
maxlen_saved = buffer->section_name.maxlen;
info_size = 0;
status = __ntapi->zw_query_virtual_memory(
NT_CURRENT_PROCESS_HANDLE,
pe_get_ntdll_module_handle(),
NT_MEMORY_SECTION_NAME,
buffer,
buffer_size,
&info_size);
if (status != NT_STATUS_SUCCESS)
return status;
/* find directory portion */
wch_dst = buffer->section_name.buffer + (buffer->section_name.strlen / sizeof(wchar16_t));
wch_dst--;
while ((*wch_dst != '\\') && (wch_dst > buffer->section_name.buffer))
wch_dst--;
if (wch_dst == buffer->section_name.buffer)
return NT_STATUS_INTERNAL_ERROR;
/* base_name */
if (base_name) {
wch_dst++;
wch_src = base_name;
wch_cap = (wchar16_t *)((uintptr_t)wch_dst + base_name_size);
if ((uintptr_t)wch_cap - (uintptr_t)(buffer->section_name.buffer) > maxlen_saved)
return NT_STATUS_BUFFER_TOO_SMALL;
while (wch_dst < wch_cap) {
*wch_dst = *wch_src;
wch_dst++;
wch_src++;
}
}
/* null termination */
*wch_dst = 0;
/* nt_path */
if (nt_path)
__ntapi->rtl_init_unicode_string(
nt_path,
buffer->section_name.buffer);
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_tt_get_system_directory_handle(
__out void ** hsysdir,
__out nt_mem_sec_name * buffer __optional,
__in uint32_t buffer_size __optional)
{
int32_t status;
nt_oa oa;
nt_iosb iosb;
nt_unicode_string path;
char _buffer[256];
/* validation */
if (!hsysdir)
return NT_STATUS_INVALID_PARAMETER_1;
else if (buffer_size && buffer_size < 0x20)
return NT_STATUS_BUFFER_TOO_SMALL;
/* buffer */
if (!buffer) {
buffer = (nt_mem_sec_name *)_buffer;
buffer_size = sizeof(_buffer);
__ntapi->tt_aligned_block_memset(buffer,0,sizeof(buffer));
}
/* sysdir path */
status = __ntapi_tt_get_system_directory_native_path(
buffer,
buffer_size,
(wchar16_t *)0,
0,
&path);
if (status != NT_STATUS_SUCCESS)
return status;
/* oa */
oa.len = sizeof(nt_oa);
oa.root_dir = (void *)0;
oa.obj_name = &path;
oa.obj_attr = 0;
oa.sec_desc = 0;
oa.sec_qos = 0;
/* open file/folder */
status = __ntapi->zw_open_file(
hsysdir,
NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES | NT_FILE_READ_ACCESS,
&oa,
&iosb,
NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
NT_FILE_DIRECTORY_FILE | NT_FILE_SYNCHRONOUS_IO_ALERT);
return status;
}
int32_t __stdcall __ntapi_tt_get_system_directory_dos_path(
__in void * hsysdir __optional,
__out wchar16_t * buffer,
__in uint32_t buffer_size,
__in wchar16_t * base_name,
__in uint32_t base_name_size,
__out nt_unicode_string * nt_path __optional)
{
int32_t status;
nt_statfs statfs;
wchar16_t * wch;
wchar16_t * wch_src;
wchar16_t * wch_cap;
nt_iosb iosb;
nt_fni * fni;
uint32_t fni_length;
/* validation */
if (!buffer)
return NT_STATUS_INVALID_PARAMETER_2;
/* hsysdir */
if (!hsysdir) {
status = __ntapi_tt_get_system_directory_handle(
&hsysdir,
(nt_mem_sec_name *)buffer,
buffer_size);
if (status != NT_STATUS_SUCCESS)
return status;
}
/* statfs */
status = __ntapi->tt_statfs(
hsysdir,
&statfs,sizeof(statfs),
(uintptr_t *)buffer,buffer_size,
NT_STATFS_DOS_DRIVE_LETTER);
if (status != NT_STATUS_SUCCESS)
return status;
/* dos path name (always shorter than the native path, so buffer_size must be ok) */
wch = buffer;
*wch = '\\'; wch++;
*wch = '?'; wch++;
*wch = '?'; wch++;
*wch = '\\'; wch++;
*wch = statfs.nt_drive_letter; wch++;
*wch = ':'; wch++;
/* alignment */
fni = (nt_fni *)((uintptr_t)buffer + 0x10);
status = __ntapi->zw_query_information_file(
hsysdir,
&iosb,
fni,
buffer_size - 8 * sizeof(wchar16_t),
NT_FILE_NAME_INFORMATION);
if (status != NT_STATUS_SUCCESS)
return status;
/* fni->file_name_length: save */
fni_length = fni->file_name_length;
/* overwrite */
wch_src = fni->file_name;
wch_cap = (wchar16_t *)((uintptr_t)wch_src + fni_length);
while (wch_src < wch_cap) {
*wch = *wch_src;
wch++;
wch_src++;
}
/* ultimate path separator */
*wch = '\\'; wch++;
/* base_name */
if (base_name) {
wch_src = base_name;
wch_cap = (wchar16_t *)((uintptr_t)wch + base_name_size);
if ((uintptr_t)wch_cap - (uintptr_t)buffer - sizeof(wchar16_t) > buffer_size)
return NT_STATUS_BUFFER_TOO_SMALL;
while (wch < wch_cap) {
*wch = *wch_src;
wch++;
wch_src++;
}
}
/* null termination */
*wch = 0;
/* nt_path */
if (nt_path)
__ntapi->rtl_init_unicode_string(
nt_path,
buffer);
return NT_STATUS_SUCCESS;
}
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