mirror of
https://github.com/samba-team/samba.git
synced 2024-12-27 03:21:53 +03:00
18c095e5d8
The memory allocations here are wasteful, but they do nicely ensure we cannot walk off the end of the DATA_BLOB that might be a string, or might be binary and might not be NULL terminated. Andrew Bartlett
317 lines
7.9 KiB
C
317 lines
7.9 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
UUID/GUID functions
|
|
|
|
Copyright (C) Theodore Ts'o 1996, 1997,
|
|
Copyright (C) Jim McDonough 2002.
|
|
Copyright (C) Andrew Tridgell 2003.
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "librpc/ndr/libndr.h"
|
|
#include "librpc/gen_ndr/ndr_misc.h"
|
|
|
|
/**
|
|
build a GUID from a string
|
|
*/
|
|
_PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
|
|
{
|
|
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
|
|
uint32_t time_low;
|
|
uint32_t time_mid, time_hi_and_version;
|
|
uint32_t clock_seq[2];
|
|
uint32_t node[6];
|
|
uint8_t buf16[16];
|
|
|
|
DATA_BLOB blob16 = data_blob_const(buf16, sizeof(buf16));
|
|
int i;
|
|
|
|
if (s->data == NULL) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (s->length == 36) {
|
|
TALLOC_CTX *mem_ctx;
|
|
const char *string;
|
|
|
|
mem_ctx = talloc_new(NULL);
|
|
NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
|
|
string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
|
|
NT_STATUS_HAVE_NO_MEMORY(string);
|
|
if (11 == sscanf(string,
|
|
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
|
|
&time_low, &time_mid, &time_hi_and_version,
|
|
&clock_seq[0], &clock_seq[1],
|
|
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
talloc_free(mem_ctx);
|
|
|
|
} else if (s->length == 38) {
|
|
TALLOC_CTX *mem_ctx;
|
|
const char *string;
|
|
|
|
mem_ctx = talloc_new(NULL);
|
|
NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
|
|
string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
|
|
NT_STATUS_HAVE_NO_MEMORY(string);
|
|
if (11 == sscanf((const char *)s->data,
|
|
"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
|
|
&time_low, &time_mid, &time_hi_and_version,
|
|
&clock_seq[0], &clock_seq[1],
|
|
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
talloc_free(mem_ctx);
|
|
|
|
} else if (s->length == 32) {
|
|
size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
|
|
(const char *)s->data, s->length);
|
|
if (rlen == blob16.length) {
|
|
/* goto the ndr_pull_struct_blob() path */
|
|
status = NT_STATUS_OK;
|
|
s = &blob16;
|
|
}
|
|
}
|
|
|
|
if (s->length == 16) {
|
|
enum ndr_err_code ndr_err;
|
|
struct GUID guid2;
|
|
TALLOC_CTX *mem_ctx;
|
|
|
|
mem_ctx = talloc_new(NULL);
|
|
NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
|
|
|
|
ndr_err = ndr_pull_struct_blob(s, mem_ctx, NULL, &guid2,
|
|
(ndr_pull_flags_fn_t)ndr_pull_GUID);
|
|
talloc_free(mem_ctx);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
|
return ndr_map_error2ntstatus(ndr_err);
|
|
}
|
|
*guid = guid2;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
guid->time_low = time_low;
|
|
guid->time_mid = time_mid;
|
|
guid->time_hi_and_version = time_hi_and_version;
|
|
guid->clock_seq[0] = clock_seq[0];
|
|
guid->clock_seq[1] = clock_seq[1];
|
|
for (i=0;i<6;i++) {
|
|
guid->node[i] = node[i];
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/**
|
|
build a GUID from a string
|
|
*/
|
|
_PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
|
|
{
|
|
DATA_BLOB blob = data_blob_string_const(s);
|
|
return GUID_from_data_blob(&blob, guid);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/**
|
|
build a GUID from a string
|
|
*/
|
|
_PUBLIC_ NTSTATUS NS_GUID_from_string(const char *s, struct GUID *guid)
|
|
{
|
|
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
|
|
uint32_t time_low;
|
|
uint32_t time_mid, time_hi_and_version;
|
|
uint32_t clock_seq[2];
|
|
uint32_t node[6];
|
|
int i;
|
|
|
|
if (s == NULL) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (11 == sscanf(s, "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
|
|
&time_low, &time_mid, &time_hi_and_version,
|
|
&clock_seq[0], &clock_seq[1],
|
|
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
|
|
status = NT_STATUS_OK;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
guid->time_low = time_low;
|
|
guid->time_mid = time_mid;
|
|
guid->time_hi_and_version = time_hi_and_version;
|
|
guid->clock_seq[0] = clock_seq[0];
|
|
guid->clock_seq[1] = clock_seq[1];
|
|
for (i=0;i<6;i++) {
|
|
guid->node[i] = node[i];
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/**
|
|
* generate a random GUID
|
|
*/
|
|
_PUBLIC_ struct GUID GUID_random(void)
|
|
{
|
|
struct GUID guid;
|
|
|
|
generate_random_buffer((uint8_t *)&guid, sizeof(guid));
|
|
guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
|
|
guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
|
|
|
|
return guid;
|
|
}
|
|
|
|
/**
|
|
* generate an empty GUID
|
|
*/
|
|
_PUBLIC_ struct GUID GUID_zero(void)
|
|
{
|
|
struct GUID guid;
|
|
|
|
ZERO_STRUCT(guid);
|
|
|
|
return guid;
|
|
}
|
|
|
|
_PUBLIC_ bool GUID_all_zero(const struct GUID *u)
|
|
{
|
|
if (u->time_low != 0 ||
|
|
u->time_mid != 0 ||
|
|
u->time_hi_and_version != 0 ||
|
|
u->clock_seq[0] != 0 ||
|
|
u->clock_seq[1] != 0 ||
|
|
!all_zero(u->node, 6)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
_PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
|
|
{
|
|
if (u1->time_low != u2->time_low ||
|
|
u1->time_mid != u2->time_mid ||
|
|
u1->time_hi_and_version != u2->time_hi_and_version ||
|
|
u1->clock_seq[0] != u2->clock_seq[0] ||
|
|
u1->clock_seq[1] != u2->clock_seq[1] ||
|
|
memcmp(u1->node, u2->node, 6) != 0) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
_PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
|
|
{
|
|
if (u1->time_low != u2->time_low) {
|
|
return u1->time_low - u2->time_low;
|
|
}
|
|
|
|
if (u1->time_mid != u2->time_mid) {
|
|
return u1->time_mid - u2->time_mid;
|
|
}
|
|
|
|
if (u1->time_hi_and_version != u2->time_hi_and_version) {
|
|
return u1->time_hi_and_version - u2->time_hi_and_version;
|
|
}
|
|
|
|
if (u1->clock_seq[0] != u2->clock_seq[0]) {
|
|
return u1->clock_seq[0] - u2->clock_seq[0];
|
|
}
|
|
|
|
if (u1->clock_seq[1] != u2->clock_seq[1]) {
|
|
return u1->clock_seq[1] - u2->clock_seq[1];
|
|
}
|
|
|
|
return memcmp(u1->node, u2->node, 6);
|
|
}
|
|
|
|
/**
|
|
its useful to be able to display these in debugging messages
|
|
*/
|
|
_PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
|
|
{
|
|
return talloc_asprintf(mem_ctx,
|
|
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
|
|
guid->time_low, guid->time_mid,
|
|
guid->time_hi_and_version,
|
|
guid->clock_seq[0],
|
|
guid->clock_seq[1],
|
|
guid->node[0], guid->node[1],
|
|
guid->node[2], guid->node[3],
|
|
guid->node[4], guid->node[5]);
|
|
}
|
|
|
|
_PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
|
|
{
|
|
char *ret, *s = GUID_string(mem_ctx, guid);
|
|
ret = talloc_asprintf(mem_ctx, "{%s}", s);
|
|
talloc_free(s);
|
|
return ret;
|
|
}
|
|
|
|
_PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
|
|
{
|
|
char *ret;
|
|
DATA_BLOB guid_blob;
|
|
enum ndr_err_code ndr_err;
|
|
TALLOC_CTX *tmp_mem;
|
|
|
|
tmp_mem = talloc_new(mem_ctx);
|
|
if (!tmp_mem) {
|
|
return NULL;
|
|
}
|
|
ndr_err = ndr_push_struct_blob(&guid_blob, tmp_mem,
|
|
NULL,
|
|
guid,
|
|
(ndr_push_flags_fn_t)ndr_push_GUID);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
|
talloc_free(tmp_mem);
|
|
return NULL;
|
|
}
|
|
|
|
ret = data_blob_hex_string(mem_ctx, &guid_blob);
|
|
talloc_free(tmp_mem);
|
|
return ret;
|
|
}
|
|
|
|
_PUBLIC_ char *NS_GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
|
|
{
|
|
return talloc_asprintf(mem_ctx,
|
|
"%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
|
|
guid->time_low, guid->time_mid,
|
|
guid->time_hi_and_version,
|
|
guid->clock_seq[0],
|
|
guid->clock_seq[1],
|
|
guid->node[0], guid->node[1],
|
|
guid->node[2], guid->node[3],
|
|
guid->node[4], guid->node[5]);
|
|
}
|
|
|
|
_PUBLIC_ bool policy_handle_empty(struct policy_handle *h)
|
|
{
|
|
return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
|
|
}
|