From 60ddd3f92f51e3b0bf1379ded0daed101dc30410 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Wed, 21 Mar 2018 01:47:38 +0000
Subject: acl helper interfaces: added ntapi_acl_init_common_descriptor().
---
src/acl/ntapi_acl_helper.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++
src/internal/ntapi.c | 3 ++
src/internal/ntapi_fnapi.h | 3 ++
3 files changed, 97 insertions(+)
create mode 100644 src/acl/ntapi_acl_helper.c
(limited to 'src')
diff --git a/src/acl/ntapi_acl_helper.c b/src/acl/ntapi_acl_helper.c
new file mode 100644
index 0000000..c1a8dc8
--- /dev/null
+++ b/src/acl/ntapi_acl_helper.c
@@ -0,0 +1,91 @@
+/********************************************************/
+/* ntapi: Native API core library */
+/* Copyright (C) 2013--2017 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
+/********************************************************/
+
+#include <psxtypes/psxtypes.h>
+#include <ntapi/nt_status.h>
+#include <ntapi/nt_object.h>
+#include <ntapi/nt_acl.h>
+#include "ntapi_impl.h"
+
+#define __SID_SYSTEM {1,1,{{0,0,0,0,0,5}},{18}}
+#define __SID_OWNER_RIGHTS {1,1,{{0,0,0,0,0,3}},{4}}
+#define __SID_AUTHENTICATED_USERS {1,1,{{0,0,0,0,0,5}},{11}}
+
+static nt_access_allowed_ace * __acl_ace_init(
+ nt_access_allowed_ace * ace,
+ uint32_t mask,
+ const nt_sid * sid,
+ uint16_t * aces)
+{
+ if (mask == 0)
+ return ace;
+
+ ace->mask = mask;
+ ace->header.ace_type = NT_ACE_TYPE_ACCESS_ALLOWED;
+ ace->header.ace_flags = 0;
+ ace->header.ace_size = sizeof(uint32_t) * sid->sub_authority_count
+ + __offsetof(nt_access_allowed_ace,sid_start)
+ + __offsetof(nt_sid,sub_authority);
+
+ __ntapi->tt_sid_copy(
+ (nt_sid *)&ace->sid_start,
+ sid);
+
+ (*aces)++;
+
+ return (nt_access_allowed_ace *)((size_t)ace + ace->header.ace_size);
+}
+
+void __stdcall __ntapi_acl_init_common_descriptor(
+ __out nt_sd_common_buffer * sd,
+ __in const nt_sid * owner,
+ __in const nt_sid * group,
+ __in const nt_sid * other,
+ __in uint32_t owner_access,
+ __in uint32_t group_access,
+ __in uint32_t other_access,
+ __in uint32_t system_access)
+{
+ nt_access_allowed_ace * ace;
+ uint16_t ace_count = 0;
+ nt_sid sid_system = __SID_SYSTEM;
+ nt_sid sid_owner_rights = __SID_OWNER_RIGHTS;
+ nt_sid sid_auth_users = __SID_AUTHENTICATED_USERS;
+
+ /* sd header */
+ sd->sd.revision = 1;
+ sd->sd.sbz_1st = 0;
+ sd->sd.control = NT_SE_SELF_RELATIVE | NT_SE_DACL_PRESENT;
+ sd->sd.offset_owner = __offsetof(nt_sd_common_buffer,owner);
+ sd->sd.offset_group = 0;
+ sd->sd.offset_dacl = __offsetof(nt_sd_common_buffer,dacl);
+ sd->sd.offset_sacl = 0;
+
+ /* owner, group, other: default sid's */
+ owner = owner ? owner : __ntapi_internals()->sid;
+ group = group ? group : &sid_owner_rights;
+ other = other ? other : &sid_auth_users;
+
+ /* owner sid */
+ __ntapi->tt_sid_copy(
+ (nt_sid *)&sd->owner,
+ owner);
+
+ /* ace's */
+ ace = (nt_access_allowed_ace *)&sd->buffer;
+ ace = __acl_ace_init(ace,system_access,&sid_system,&ace_count);
+ ace = __acl_ace_init(ace,owner_access,owner,&ace_count);
+ ace = __acl_ace_init(ace,group_access,group,&ace_count);
+ ace = __acl_ace_init(ace,other_access,other,&ace_count);
+
+ /* dacl */
+ sd->dacl.acl_revision = 0x02;
+ sd->dacl.sbz_1st = 0;
+ sd->dacl.acl_size = (uint16_t)((char *)ace - (char *)&sd->dacl);
+ sd->dacl.ace_count = ace_count;
+ sd->dacl.sbz_2nd = 0;
+
+}
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index 88f3f14..6421cb1 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -350,6 +350,9 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
__ntapi->dsr_connect_internal_client = __ntapi_dsr_connect_internal_client;
__ntapi->dsr_internal_client_connect = __ntapi_dsr_internal_client_connect;
+ /* nt_acl.h */
+ __ntapi->acl_init_common_descriptor = __ntapi_acl_init_common_descriptor;
+
/* nt_vfd.h */
__ntapi->vfd_dev_name_init = __ntapi_vfd_dev_name_init;
diff --git a/src/internal/ntapi_fnapi.h b/src/internal/ntapi_fnapi.h
index 901ecd6..c8567f1 100644
--- a/src/internal/ntapi_fnapi.h
+++ b/src/internal/ntapi_fnapi.h
@@ -219,6 +219,9 @@ ntapi_dsr_create_port __ntapi_dsr_create_port;
ntapi_dsr_connect_internal_client __ntapi_dsr_connect_internal_client;
ntapi_dsr_internal_client_connect __ntapi_dsr_internal_client_connect;
+/* nt_acl.h */
+ntapi_acl_init_common_descriptor __ntapi_acl_init_common_descriptor;
+
/* nt_vfd.h */
ntapi_vfd_dev_name_init __ntapi_vfd_dev_name_init;
--
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