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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 <ntapi/nt_port.h>
#include <ntapi/nt_tty.h>
#include <ntapi/ntapi.h>
#include "ntapi_impl.h"
#include "ntapi_pty.h"
static int32_t __stdcall __ntapi_pty_open_close(
nt_pty * pty,
nt_iosb * iosb,
int32_t opcode)
{
int32_t status;
nt_pty_fd_msg msg;
__ntapi->tt_aligned_block_memset(&msg,0,sizeof(msg));
msg.header.msg_type = NT_LPC_NEW_MESSAGE;
msg.header.data_size = sizeof(msg.data);
msg.header.msg_size = sizeof(msg);
msg.data.ttyinfo.opcode = opcode;
msg.data.fdinfo.hpty = pty->hpty;
msg.data.fdinfo.access = pty->access;
msg.data.fdinfo.flags = pty->flags;
msg.data.fdinfo.share = pty->share;
msg.data.fdinfo.options = pty->options;
msg.data.fdinfo.luid.high = pty->luid.high;
msg.data.fdinfo.luid.low = pty->luid.low;
__ntapi_tt_guid_copy(
&msg.data.fdinfo.guid,
&pty->guid);
if ((status = __ntapi->zw_request_wait_reply_port(pty->hport,&msg,&msg)))
return status;
else if (msg.data.ttyinfo.status)
return msg.data.ttyinfo.status;
pty->hpty = msg.data.fdinfo.hpty;
pty->section = msg.data.fdinfo.section;
pty->section_size = msg.data.fdinfo.section_size;
pty->luid.high = msg.data.fdinfo.luid.high;
pty->luid.low = msg.data.fdinfo.luid.low;
iosb->status = msg.data.ttyinfo.status;
iosb->info = 0;
return NT_STATUS_SUCCESS;
}
static int32_t __fastcall __ntapi_pty_free(nt_pty * pty)
{
void * addr;
size_t size;
/* unmap section */
if (pty->section_addr)
__ntapi->zw_unmap_view_of_section(
NT_CURRENT_PROCESS_HANDLE,
pty->section_addr);
/* free control block */
addr = pty->addr;
size = pty->size;
return __ntapi->zw_free_virtual_memory(
NT_CURRENT_PROCESS_HANDLE,
&addr,
&size,
NT_MEM_RELEASE);
}
static int32_t __fastcall __ntapi_pty_fail(nt_pty * pty,int32_t status)
{
__ntapi_pty_free(pty);
return status;
}
static int32_t __fastcall __ntapi_pty_alloc(nt_pty ** pty)
{
int32_t status;
nt_pty * ctx;
size_t ctx_size;
/* allocate control block */
ctx = 0;
ctx_size = sizeof(nt_pty);
if ((status = __ntapi->zw_allocate_virtual_memory(
NT_CURRENT_PROCESS_HANDLE,
(void **)&ctx,
0,&ctx_size,
NT_MEM_COMMIT,
NT_PAGE_READWRITE)))
return status;
/* init control block */
__ntapi->tt_aligned_block_memset(
ctx,0,ctx_size);
ctx->addr = ctx;
ctx->size = ctx_size;
*pty = ctx;
return NT_STATUS_SUCCESS;
}
static int32_t __ntapi_pty_connect(
void * hport,
nt_pty * ctx,
nt_iosb * iosb)
{
int32_t status;
ctx->hport = hport
? hport
: __ntapi_internals()->hport_tty_session;
/* request */
iosb = iosb ? iosb : &ctx->iosb;
if ((status = __ntapi_pty_open_close(ctx,iosb,NT_TTY_PTY_OPEN)))
return __ntapi_pty_fail(ctx,status);
/* map section */
if ((status = __ntapi->zw_map_view_of_section(
ctx->section,
NT_CURRENT_PROCESS_HANDLE,
&ctx->section_addr,
0,ctx->section_size,
0,&ctx->section_size,
NT_VIEW_UNMAP,0,
NT_PAGE_READWRITE)))
return __ntapi_pty_fail(ctx,status);
/* assume conforming clients, config for single lock try */
__ntapi->tt_sync_block_init(&ctx->sync[__PTY_READ],0,0,1,0,0);
__ntapi->tt_sync_block_init(&ctx->sync[__PTY_WRITE],0,0,1,0,0);
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_pty_open(
void * hport,
nt_pty ** pty,
uint32_t desired_access,
nt_object_attributes* obj_attr,
nt_iosb * iosb,
uint32_t share_access,
uint32_t open_options)
{
int32_t status;
uint32_t hash;
nt_guid guid;
nt_uuid_str_utf16 * guid_str;
nt_pty * ctx;
if (!obj_attr || !obj_attr->obj_name || !obj_attr->obj_name->buffer)
return NT_STATUS_INVALID_PARAMETER;
if (obj_attr->obj_name->strlen != __DEVICE_PATH_PREFIX_LEN + sizeof(nt_guid_str_utf16))
return NT_STATUS_OBJECT_PATH_INVALID;
hash = __ntapi->tt_buffer_crc32(
0,
obj_attr->obj_name->buffer,
__DEVICE_PATH_PREFIX_LEN);
if (hash != __DEVICE_PATH_PREFIX_HASH)
return NT_STATUS_OBJECT_PATH_INVALID;
guid_str = (nt_uuid_str_utf16 *)
((uintptr_t)obj_attr->obj_name->buffer + __DEVICE_PATH_PREFIX_LEN);
if (__ntapi->tt_utf16_string_to_guid(guid_str,&guid))
return NT_STATUS_OBJECT_NAME_INVALID;
/* control block */
if ((status = __ntapi_pty_alloc(&ctx)))
return status;
__ntapi_tt_guid_copy(
&ctx->guid,
&guid);
ctx->access = desired_access;
ctx->flags = obj_attr->obj_attr;
ctx->share = share_access;
ctx->options = open_options;
/* pts */
if (obj_attr->root_dir) {
ctx->luid.high = ((nt_pty *)obj_attr->root_dir)->luid.high;
ctx->luid.low = ((nt_pty *)obj_attr->root_dir)->luid.low;
}
if ((status = __ntapi_pty_connect(hport,ctx,iosb)))
return status;
*pty = ctx;
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_pty_inherit(
__in void * hport,
__out nt_pty ** pty,
__in nt_pty_client_info * client_info)
{
int32_t status;
nt_iosb iosb;
nt_pty_inherit_info inherit;
nt_pty * ctx;
inherit.any[0] = client_info->any[0];
inherit.any[1] = client_info->any[1];
inherit.any[2] = client_info->any[2];
inherit.any[3] = client_info->any[3];
if ((status = __ntapi_pty_query(
hport,&iosb,
&inherit,sizeof(inherit),
NT_PTY_INHERIT_INFORMATION)))
return status;
/* control block */
if ((status = __ntapi_pty_alloc(&ctx)))
return status;
__ntapi_tt_guid_copy(
&ctx->guid,
&inherit.guid);
ctx->access = inherit.access;
ctx->flags = inherit.flags;
ctx->share = inherit.share;
ctx->options = inherit.options;
ctx->luid.low = inherit.luid.low;
ctx->luid.high = inherit.luid.high;
if ((status = __ntapi_pty_connect(hport,ctx,&iosb)))
return status;
*pty = ctx;
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_pty_reopen(
__in void * hport,
__in nt_pty * pty)
{
return __ntapi_pty_connect(hport,pty,0);
}
int32_t __stdcall __ntapi_pty_close(nt_pty * pty)
{
if (!pty || (pty->addr != pty))
return NT_STATUS_INVALID_PARAMETER;
__ntapi_pty_open_close(
pty,&pty->iosb,NT_TTY_PTY_CLOSE);
return __ntapi_pty_free(pty);
}
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