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/*
Unix SMB/CIFS implementation.
SAM_GROUP_HANDLE /SAM_GROUP_ENUM helpers
Copyright (C) Stefan (metze) Metzmacher 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_SAM
/************************************************************
Fill the SAM_GROUP_HANDLE with default values.
***********************************************************/
static void sam_fill_default_group(SAM_GROUP_HANDLE *group)
{
ZERO_STRUCT(group->private); /* Don't touch the talloc context */
}
static void destroy_sam_group_handle_talloc(SAM_GROUP_HANDLE **group)
{
if (*group) {
talloc_destroy((*group)->mem_ctx);
*group = NULL;
}
}
/**********************************************************************
Alloc memory and initialises a SAM_GROUP_HANDLE on supplied mem_ctx.
***********************************************************************/
NTSTATUS sam_init_group_talloc(TALLOC_CTX *mem_ctx, SAM_GROUP_HANDLE **group)
{
SMB_ASSERT(*group != NULL);
if (!mem_ctx) {
DEBUG(0,("sam_init_group_talloc: mem_ctx was NULL!\n"));
return NT_STATUS_UNSUCCESSFUL;
}
*group=(SAM_GROUP_HANDLE *)talloc(mem_ctx, sizeof(SAM_GROUP_HANDLE));
if (*group==NULL) {
DEBUG(0,("sam_init_group_talloc: error while allocating memory\n"));
return NT_STATUS_NO_MEMORY;
}
(*group)->mem_ctx = mem_ctx;
(*group)->free_fn = NULL;
sam_fill_default_group(*group);
return NT_STATUS_OK;
}
/*************************************************************
Alloc memory and initialises a struct SAM_GROUP_HANDLE.
************************************************************/
NTSTATUS sam_init_group(SAM_GROUP_HANDLE **group)
{
TALLOC_CTX *mem_ctx;
NTSTATUS nt_status;
mem_ctx = talloc_init("sam internal SAM_GROUP_HANDLE allocation");
if (!mem_ctx) {
DEBUG(0,("sam_init_group: error while doing talloc_init()\n"));
return NT_STATUS_NO_MEMORY;
}
if (!NT_STATUS_IS_OK(nt_status = sam_init_group_talloc(mem_ctx, group))) {
talloc_destroy(mem_ctx);
return nt_status;
}
(*group)->free_fn = destroy_sam_group_handle_talloc;
return NT_STATUS_OK;
}
/************************************************************
Reset the SAM_GROUP_HANDLE.
***********************************************************/
NTSTATUS sam_reset_group(SAM_GROUP_HANDLE *group)
{
SMB_ASSERT(group != NULL);
sam_fill_default_group(group);
return NT_STATUS_OK;
}
/************************************************************
Free the SAM_GROUP_HANDLE and the member pointers.
***********************************************************/
NTSTATUS sam_free_group(SAM_ACCOUNT_HANDLE **group)
{
SMB_ASSERT(*group != NULL);
if ((*group)->free_fn) {
(*group)->free_fn(group);
}
return NT_STATUS_OK;
}
/**********************************************************
Encode the group control bits into a string.
length = length of string to encode into (including terminating
null). length *MUST BE MORE THAN 2* !
**********************************************************/
char *sam_encode_acct_ctrl(uint16 group_ctrl, size_t length)
{
static fstring group_str;
size_t i = 0;
group_str[i++] = '[';
if (group_ctrl & GCB_LOCAL_GROUP ) group_str[i++] = 'L';
if (group_ctrl & GCB_GLOBAL_GROUP ) group_str[i++] = 'G';
for ( ; i < length - 2 ; i++ )
group_str[i] = ' ';
i = length - 2;
group_str[i++] = ']';
group_str[i++] = '\0';
return group_str;
}
/**********************************************************
Decode the group control bits from a string.
**********************************************************/
uint16 sam_decode_group_ctrl(const char *p)
{
uint16 group_ctrl = 0;
BOOL finished = False;
/*
* Check if the account type bits have been encoded after the
* NT password (in the form [NDHTUWSLXI]).
*/
if (*p != '[')
return 0;
for (p++; *p && !finished; p++) {
switch (*p) {
case 'L': { group_ctrl |= GCB_LOCAL_GROUP; break; /* 'L'ocal Aliases Group. */ }
case 'G': { group_ctrl |= GCB_GLOBAL_GROUP; break; /* 'G'lobal Domain Group. */ }
case ' ': { break; }
case ':':
case '\n':
case '\0':
case ']':
default: { finished = True; }
}
}
return group_ctrl;
}
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