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/*********************************************************/
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/* toksvc: a framework-native token broker service */
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/* Copyright (C) 2020 Z. Gilboa */
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/* Released under GPLv2 and GPLv3; see COPYING.TOKSVC. */
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/*********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/ntapi.h>
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#include <toksvc/toksvc.h>
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#include "toksvc_driver_impl.h"
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static int32_t toks_open(
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void ** hfile,
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void * hat,
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const char * arg,
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uint32_t options,
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bool fprivate)
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{
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int32_t status;
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nt_oa oa;
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nt_iosb iosb;
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nt_unicode_string path;
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nt_unicode_conversion_params_utf8_to_utf16 params = {0,0,0,0,0,0,0,0,0};
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wchar16_t buffer[4096];
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wchar16_t * wch;
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size_t nbytes;
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/* utf-8 --> utf-16 */
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params.src = (const unsigned char *)arg;
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params.src_size_in_bytes= ntapi->tt_string_null_offset_multibyte(arg);
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params.dst = buffer;
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params.dst_size_in_bytes= sizeof(buffer);
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if ((status = ntapi->uc_convert_unicode_stream_utf8_to_utf16(¶ms)))
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return status;
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/* convenience */
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for (wch=buffer, nbytes=params.bytes_written; nbytes; ) {
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if (*wch == '/')
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*wch = '\\';
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nbytes -= sizeof(wchar16_t);
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wch++;
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}
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/* path */
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path.maxlen = 0;
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path.strlen = (uint16_t)params.bytes_written;
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path.buffer = buffer;
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/* oa */
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oa.len = sizeof(nt_oa);
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oa.root_dir = (buffer[0]=='\\') ? 0 : hat;
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oa.obj_name = &pat;;
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oa.obj_attr = fprivate ? 0 : NT_OBJ_INHERIT;
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oa.sec_desc = 0;
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oa.sec_qos = 0;
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/* open */
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return ntapi->zw_open_file(
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hfile,
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NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES | NT_FILE_READ_DATA,
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&oa,&iosb,
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NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE | NT_FILE_SHARE_DELETE,
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options | NT_FILE_SYNCHRONOUS_IO_ALERT);
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}
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static int32_t toks_open_volume(
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void ** hfile,
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void * hat,
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const char * arg,
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uint32_t options,
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bool fprivate)
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{
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int32_t status;
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void * hvolume = 0;
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wchar16_t drive = arg[0];
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if ((arg[1]==':') && ((arg[2]=='\\') || (arg[2]=='/'))) {
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if ((status = ntapi->tt_get_dos_drive_root_handle(
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&hvolume,drive)))
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return status;
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hat = hvolume;
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arg = &arg[3];
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}
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status = toks_open(
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hfile,hat,arg,
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options,fprivate);
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if (hvolume)
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ntapi->zw_close(hvolume);
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return status;
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}
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int32_t toks_open_file(void ** hfile, void * hat, const char * arg, bool fprivate)
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{
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return toks_open_volume(hfile,hat,arg,NT_FILE_NON_DIRECTORY_FILE,fprivate);
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}
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int32_t toks_open_dir(void ** hfile, void * hat, const char * arg, bool fprivate)
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{
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return toks_open_volume(hfile,hat,arg,NT_FILE_DIRECTORY_FILE,fprivate);
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}
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