Blame src/process/ntapi_tt_get_runtime_data.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2017  Z. Gilboa                 */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_memory.h>
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#include <ntapi/nt_process.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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#if (__SIZEOF_POINTER__ == 4)
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static wchar16_t runtime_arg[12] = {
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	' ','-','r',' ',
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	'i','n','t','e','g','r','a','l'};
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#elif (__SIZEOF_POINTER__ == 8)
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static wchar16_t runtime_arg[20] = {
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	' ','-','r',' ',
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	'i','n','t','e','g','r','a','l',
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	'-','r','u','n','t','i','m','e'};
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#endif
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int32_t __stdcall __ntapi_tt_get_runtime_data(
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	__out		nt_runtime_data **	rtdata,
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	__in		wchar16_t **		wargv)
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{
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	int32_t				status;
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	nt_process_parameters *		process_params;
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	wchar16_t *			addrarg;
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	uintptr_t			address;
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	uintptr_t			buffer;
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	nt_runtime_data *		prtdata;
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	ntapi_internals *		__internals;
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	/* init */
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	__internals = __ntapi_internals();
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	/* once? */
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	if (__internals->rtdata) {
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		*rtdata = __internals->rtdata;
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		return NT_STATUS_SUCCESS;
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	}
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	if (!(wargv = wargv ? wargv : __internals->ntapi_img_sec_bss->argv_envp_array))
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		return NT_STATUS_INVALID_PARAMETER;
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	if (!wargv[1] || !wargv[2])
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		return NT_STATUS_MORE_PROCESSING_REQUIRED;
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	/* integral process? */
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	addrarg = ((wargv[1][0] == '-') && (wargv[1][1] == 'r') && (wargv[1][2] == 0))
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		? wargv[2] : 0;
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	/* top-level framework process? */
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	if (!addrarg || wargv[3])
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		return NT_STATUS_MORE_PROCESSING_REQUIRED;
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	/* obtain pointer to data block */
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	if ((status = __ntapi->tt_hex_utf16_to_uintptr(
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			addrarg,&address)))
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		return status;
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	/* invalid pointer? */
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	if (address & 0xFFF)
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		return NT_STATUS_MORE_PROCESSING_REQUIRED;
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	/* address is aligned at page boundary */
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	if ((status = __ntapi->zw_read_virtual_memory(
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			NT_CURRENT_PROCESS_HANDLE,
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			(void *)address,
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			(char *)&buffer,
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			sizeof(buffer),
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			0)))
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		return status;
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	/* abi */
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	prtdata = (nt_runtime_data *)address;
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	if (__ntapi->tt_guid_compare(&prtdata->abi,&(nt_guid)NT_PROCESS_GUID_RTDATA))
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		return NT_STATUS_MORE_PROCESSING_REQUIRED;
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	/* update state */
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	prtdata->flags |= NT_RUNTIME_DATA_INTEGRAL_PROCESS;
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	/* avoid confusion :-) */
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	process_params = ((nt_peb *)pe_get_peb_address())->process_params;
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	__ntapi->tt_memcpy_utf16(
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		(wchar16_t *)pe_va_from_rva(
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			process_params->command_line.buffer,
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			process_params->command_line.strlen - sizeof(runtime_arg)),
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		runtime_arg,
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		sizeof(runtime_arg));
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	*rtdata = prtdata;
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	return NT_STATUS_SUCCESS;
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}