Blame src/internal/ntapi_debug.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013,2014,2015  Z. Gilboa             */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#ifdef __DEBUG
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_file.h>
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#include <ntapi/ntapi.h>
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#include "ntapi_impl.h"
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char dbg_buf[0x1000];
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ssize_t __cdecl __dbg_write(
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	__in	void *		hfile,
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	__in	const void *	buf,
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	__in	size_t		bytes)
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{
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	nt_iosb		iosb;
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	int32_t		status;
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	status = __ntapi->zw_write_file(
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		hfile,
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		(void *)0,
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		(nt_io_apc_routine *)0,
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		(void *)0,
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		&iosb,
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		(void *)buf,
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		(uint32_t)bytes,
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		(nt_large_integer *)0,
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		(uint32_t *)0);
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	if (status == NT_STATUS_SUCCESS)
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		return iosb.info;
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	else
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		return -1;
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}
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int32_t __cdecl __dbg_fn_call(
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	__in	void *			hfile		__optional,
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	__in	char *			fn_caller_name,
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	__in	void *			fn_callee_addr,
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	__in	uintptr_t		fn_ret,
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	__in	ntapi_dbg_write*	pfn_dbg_write	__optional,
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	__in	char *			source		__optional,
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	__in	int			line		__optional)
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{
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	struct pe_ldr_tbl_entry *	image_meta;
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	void *				image_base;
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	char *				fn_name;
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	size_t				bytes;
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	char				dbg_buf[256];
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	if (!pfn_dbg_write)
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		pfn_dbg_write = __dbg_write;
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	image_meta = pe_get_symbol_module_info(fn_callee_addr);
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	fn_name    = (char *)0;
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	if (image_meta)
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		image_base = image_meta->dll_base;
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	else
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		image_base = (void *)0;
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	if (image_base)
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		fn_name = pe_get_symbol_name(
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			image_base,
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			fn_callee_addr);
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	if (!fn_name)
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		fn_name = pe_get_import_symbol_info(
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			fn_callee_addr,
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			(void **)0,
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			(char **)0,
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			&image_meta);
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	if (source && fn_name)
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		bytes = __ntapi->sprintf(
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				dbg_buf,
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				"%s: (%s:%d):\n"
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				"--> %s returned 0x%08x\n\n",
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				fn_caller_name, source, line, fn_name, fn_ret);
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	else if (fn_name)
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		bytes = __ntapi->sprintf(
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				dbg_buf,
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				"%s: %s returned 0x%08x\n\n",
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				fn_caller_name, fn_name, fn_ret);
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	else if (source)
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		bytes = __ntapi->sprintf(
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				dbg_buf,
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				"%s: (%s:%d):\n"
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				"--> calling 0x%08x returned 0x%08x\n\n",
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				fn_caller_name, source, line, fn_callee_addr, fn_ret);
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	else
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		bytes = __ntapi->sprintf(
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				dbg_buf,
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				"%s: calling 0x%08x returned 0x%08x\n\n",
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				fn_caller_name, fn_callee_addr, fn_ret);
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	if (bytes) {
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		bytes = __ntapi->strlen(dbg_buf);
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		if (bytes == pfn_dbg_write(hfile,dbg_buf,bytes))
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			return NT_STATUS_SUCCESS;
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		else
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			return NT_STATUS_UNSUCCESSFUL;
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	} else
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		return NT_STATUS_UNSUCCESSFUL;
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}
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int32_t __cdecl __dbg_msg(
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	__in	void *			hfile		__optional,
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	__in	char *			source		__optional,
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	__in	int			line		__optional,
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	__in	char *			fn_caller_name,
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	__in	char *			fmt,
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	__in	uintptr_t		arg1,
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	__in	uintptr_t		arg2,
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	__in	uintptr_t		arg3,
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	__in	uintptr_t		arg4,
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	__in	uintptr_t		arg5,
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	__in	uintptr_t		arg6,
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	__in	ntapi_dbg_write*	pfn_dbg_write	__optional)
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{
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	char *		buffer;
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	size_t		bytes;
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	if (!pfn_dbg_write)
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		pfn_dbg_write = __dbg_write;
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	bytes  = 0;
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	buffer = dbg_buf;
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	if (source)
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		bytes = __ntapi->sprintf(
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				buffer,
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				"%s: (%s:%d):\n--> ",
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				fn_caller_name,source,line);
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	else if (fn_caller_name)
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		bytes = __ntapi->sprintf(
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				buffer,
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				"%s: ",
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				fn_caller_name);
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	else
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		dbg_buf[0] = '\0';
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	if (bytes >= 0)
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		buffer += __ntapi->strlen(dbg_buf);
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	else
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		return NT_STATUS_UNSUCCESSFUL;
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	bytes = __ntapi->sprintf(buffer,fmt,arg1,arg2,arg3,arg4,arg5,arg6);
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	if (bytes) {
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		bytes = __ntapi->strlen(dbg_buf);
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		if (bytes == pfn_dbg_write(hfile,dbg_buf,bytes))
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			return NT_STATUS_SUCCESS;
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		else
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			return NT_STATUS_UNSUCCESSFUL;
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	} else
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		return NT_STATUS_UNSUCCESSFUL;
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}
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#endif