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/*****************************************************************************/
/* pemagination: a (virtual) tour into portable bits and executable bytes */
/* Copyright (C) 2013--2017 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.PEMAGINE. */
/*****************************************************************************/
#include <psxtypes/psxtypes.h>
#include <pemagine/pemagine.h>
#include "pe_os.h"
int32_t pe_find_framework_loader(
struct pe_framework_runtime_data * rtdata,
const wchar16_t * basename,
const wchar16_t * rrelname,
void * refaddr,
uintptr_t * buffer,
uint32_t bufsize,
uint32_t flags)
{
int32_t status;
struct pe_unicode_str path;
struct os_oa oa;
struct os_iosb iosb;
void * himage;
void * himgdir;
void * hdsodir;
void * hloader;
void * hparent;
void * hprevious;
const wchar16_t * wch;
const wchar16_t * wch_cap;
void * hntdll;
os_zw_close * zw_close;
os_zw_open_file * zw_open_file;
/* init */
if (!(hntdll = pe_get_ntdll_module_handle()))
return OS_STATUS_INTERNAL_ERROR;
if (!(zw_close = (os_zw_close *)pe_get_procedure_address(
hntdll,"ZwClose")))
return OS_STATUS_INTERNAL_ERROR;
if (!(zw_open_file = (os_zw_open_file *)pe_get_procedure_address(
hntdll,"ZwOpenFile")))
return OS_STATUS_INTERNAL_ERROR;
/* flags */
if (flags == PE_LDSO_INTEGRAL_ONLY)
(void)0;
else if (flags == PE_LDSO_DEFAULT_EXECUTABLE)
(void)0;
else if (flags == PE_LDSO_STANDALONE_EXECUTABLE)
(void)0;
else
return OS_STATUS_INVALID_PARAMETER;
/* oa */
oa.len = sizeof(struct os_oa);
oa.root_dir = 0;
oa.obj_name = &path;
oa.obj_attr = OS_OBJ_CASE_INSENSITIVE;
oa.sec_desc = 0;
oa.sec_qos = 0;
/* standalone executable? */
if (flags == PE_LDSO_STANDALONE_EXECUTABLE) {
wch = basename;
wch_cap = basename + 512;
for (; *wch && wch<wch_cap; wch++)
if ((*wch == '\\') != (*wch == '/'))
return OS_STATUS_INVALID_PARAMETER;
if (*wch)
return OS_STATUS_NAME_TOO_LONG;
path.buffer = (wchar16_t *)basename;
path.strlen = sizeof(wchar16_t) * (wch - basename);
path.maxlen = 0;
if ((status = pe_open_image_from_addr(
&himage,refaddr,
buffer,bufsize,
0,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
if ((status = pe_open_physical_parent_directory(
&hdsodir,himage,
buffer,bufsize,
0,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
oa.root_dir = hdsodir;
if ((status = zw_open_file(
&hloader,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
&oa,&iosb,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
OS_FILE_NON_DIRECTORY_FILE)))
return status;
rtdata->hdsodir = hdsodir;
rtdata->hloader = hloader;
rtdata->himage = himage;
return OS_STATUS_SUCCESS;
}
/* root-relative loader path */
wch = rrelname;
wch_cap = rrelname + 512;
for (; *wch && wch<wch_cap; )
wch++;
if (*wch)
return OS_STATUS_NAME_TOO_LONG;
path.buffer = (wchar16_t *)rrelname;
path.strlen = sizeof(wchar16_t) * (wch - rrelname);
path.maxlen = 0;
/* inherited root directory? */
if (rtdata->hroot) {
oa.root_dir = rtdata->hroot;
if ((status = zw_open_file(
&hloader,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
&oa,&iosb,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
OS_FILE_NON_DIRECTORY_FILE)))
return status;
rtdata->hdsodir = 0;
rtdata->hloader = hloader;
return OS_STATUS_SUCCESS;
}
/* integral only and no inherited root directory? */
if (flags == PE_LDSO_INTEGRAL_ONLY)
return OS_STATUS_COULD_NOT_INTERPRET;
/* finde Pluto / find Waldo */
if ((status = pe_open_image_from_addr(
&himage,refaddr,
buffer,bufsize,
0,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
if ((status = pe_open_physical_parent_directory(
&himgdir,himage,
buffer,bufsize,
0,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
if ((status = pe_open_physical_parent_directory(
&hparent,himgdir,
buffer,bufsize,
OS_OBJ_INHERIT,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
zw_close(himgdir);
hloader = 0;
oa.root_dir = hparent;
status = zw_open_file(
&hloader,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
&oa,&iosb,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
OS_FILE_NON_DIRECTORY_FILE);
while (!hloader) {
if (status == OS_STATUS_OBJECT_NAME_NOT_FOUND)
(void)0;
else if (status == OS_STATUS_OBJECT_PATH_NOT_FOUND)
(void)0;
else
return status;
hprevious = hparent;
if ((status = pe_open_physical_parent_directory(
&hparent,hprevious,
buffer,bufsize,
OS_OBJ_INHERIT,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
0)))
return status;
oa.root_dir = hparent;
status = zw_open_file(
&hloader,
OS_SEC_SYNCHRONIZE
| OS_FILE_READ_ACCESS
| OS_FILE_READ_ATTRIBUTES,
&oa,&iosb,
OS_FILE_SHARE_READ
| OS_FILE_SHARE_WRITE
| OS_FILE_SHARE_DELETE,
OS_FILE_NON_DIRECTORY_FILE);
zw_close(hprevious);
}
rtdata->hdsodir = 0;
rtdata->hloader = hloader;
rtdata->himage = himage;
rtdata->hroot = hparent;
return OS_STATUS_SUCCESS;
}
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