Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 13:18:59 UTC, Kagamin wrote: This guid is (int,short,short,byte[8]) in little endian byte order. So if you want to convert it to big endian, you'll need to swap bytes in those int and two shorts. ``` ubyte[] guid=... int* g1=cast(int*)guid.ptr; *g1=bswap(*g1); ``` Yes, therefore, my option remains more correct rather than directly converting to UUID, since it does not correspond to the value specified in LDAP. Therefore, it is necessary to do byte permutations.
Re: Convert binary to UUID from LDAP
On 3/28/23 6:36 AM, WebFreak001 wrote: the formatting messed up here. Try this code: ```d auto uuid = UUID( (cast(const(ubyte)[]) value.attributes["objectGUID"][0]) [0 .. 16] ); ``` Nice, I didn't think this would work actually! -Steve
Re: Convert binary to UUID from LDAP
On 3/28/23 1:05 AM, Alexander Zhirov wrote: On Tuesday, 28 March 2023 at 00:51:43 UTC, Steven Schveighoffer wrote: `auto uuid = UUID(*cast(ubyte[16]*)youruuiddata.ptr);` (added quotes here) ```d ubyte[] arr = cast(ubyte[])value.attributes["objectGUID"][0].dup; writeln(UUID(cast(ubyte[16])arr.ptr)); ``` `Error: cannot cast expression 'cast(ubyte*)arr' of type 'ubyte*' to 'ubyte[16]'` No, it's not possible to transform. The array is initially `immutable(char[])`. Apologies, I quoted my original above to suppress the markdown formatting. Here it is again with syntax highlighting. ```d auto uuid = UUID(*cast(ubyte[16]*)youruuiddata.ptr); ``` That should work. I sometimes forget that my newsreader adds the markdown tag, even though it looks good on my end. -Steve
Re: Convert binary to UUID from LDAP
This guid is (int,short,short,byte[8]) in little endian byte order. So if you want to convert it to big endian, you'll need to swap bytes in those int and two shorts. ``` ubyte[] guid=... int* g1=cast(int*)guid.ptr; *g1=bswap(*g1); ```
Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 05:05:58 UTC, Alexander Zhirov wrote: On Tuesday, 28 March 2023 at 00:51:43 UTC, Steven Schveighoffer wrote: auto uuid = UUID(*cast(ubyte[16]*)youruuiddata.ptr); ```d ubyte[] arr = cast(ubyte[])value.attributes["objectGUID"][0].dup; writeln(UUID(cast(ubyte[16])arr.ptr)); ``` `Error: cannot cast expression 'cast(ubyte*)arr' of type 'ubyte*' to 'ubyte[16]'` No, it's not possible to transform. The array is initially `immutable(char[])`. the formatting messed up here. Try this code: ```d auto uuid = UUID( (cast(const(ubyte)[]) value.attributes["objectGUID"][0]) [0 .. 16] ); ``` no need to `.dup` the values - UUID can work without manipulating the original data, so we just need to cast the `immutable(char)[]` to `const(ubyte)[]` The LDAP library should probably really instead expose `ubyte[]` instead of `string`
Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 05:05:58 UTC, Alexander Zhirov wrote:
`Error: cannot cast expression 'cast(ubyte*)arr' of type
'ubyte*' to 'ubyte[16]'`
Here is the working example:
```d
import std.stdio;
import std.uuid;
void main()
{
ubyte[] arr = [159, 199, 22, 163, 13, 74, 145, 73, 158, 112, 7,
192, 12, 193, 7, 194];
UUID(arr[0 .. 16]).writeln;
}
```
You just need to take a slice of your array to guarantee that it
has only 16 elements, and thus, pass it to `UUID`.
Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 08:15:03 UTC, Alexander Zhirov wrote: So far it has been possible to convert like this The idea was borrowed from [here](https://elixirforum.com/t/using-active-directory-guid-with-ecto-uuid-field/15904).
Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 05:26:08 UTC, Alexander Zhirov wrote:
When converting to HEX, I get the string
`121F4C264DED5E41A33F445B0A1CAE32`, in which some values are
reversed. I found ways on the Internet to transform the
permutation method into the desired result, but most likely it
will be a crutch rather than the right solution to lead to the
final result `264c1f12-ed4d-415e-a33f-445b0a1cae32`.
So far it has been possible to convert like this
```d
{
writeln(value.attributes["objectGUID"][0].toUUID);
}
UUID toUUID(const char[] objectGUID)
{
if(objectGUID.length != 16)
throw new Exception("objectGUID does not match the
length");
auto arr = (cast(ubyte[])objectGUID).array;
auto part1 = arr[0 .. 4].reverse;
auto part2 = arr[4 .. 6].reverse;
auto part3 = arr[6 .. 8].reverse;
auto part4 = arr[8 .. 10];
auto part5 = arr[10 .. $];
string hex =
toHexString(part1) ~ '-' ~
toHexString(part2) ~ '-' ~
toHexString(part3) ~ '-' ~
toHexString(part4) ~ '-' ~
toHexString(part5);
return cast(UUID)hex;
}
```
Re: Convert binary to UUID from LDAP
This guid is (int,short,short,byte[8]) in little endian byte order. So if you want to convert it to big endian, you'll need to swap bytes in those int and two shorts. ``` ubyte[] guid=... int* g1=cast(int*)guid.ptr; *g1=bswap(*g1); ```
Re: Convert binary to UUID from LDAP
On Monday, 27 March 2023 at 18:39:19 UTC, Alexander Zhirov wrote: I mean get the UUID data type itself. Just using [this example](https://dlang.org/phobos/std_uuid.html#.UUID) `cast(ubyte[16])ubyte[]` will not work, conversion error. ```d writeln(toHexString(cast(ubyte[])value.attributes["objectGUID"][0])); ``` When converting to HEX, I get the string `121F4C264DED5E41A33F445B0A1CAE32`, in which some values are reversed. I found ways on the Internet to transform the permutation method into the desired result, but most likely it will be a crutch rather than the right solution to lead to the final result `264c1f12-ed4d-415e-a33f-445b0a1cae32`.
Re: Convert binary to UUID from LDAP
On Tuesday, 28 March 2023 at 00:51:43 UTC, Steven Schveighoffer wrote: auto uuid = UUID(*cast(ubyte[16]*)youruuiddata.ptr); ```d ubyte[] arr = cast(ubyte[])value.attributes["objectGUID"][0].dup; writeln(UUID(cast(ubyte[16])arr.ptr)); ``` `Error: cannot cast expression 'cast(ubyte*)arr' of type 'ubyte*' to 'ubyte[16]'` No, it's not possible to transform. The array is initially `immutable(char[])`.
Re: Convert binary to UUID from LDAP
On 3/27/23 1:56 PM, Alexander Zhirov wrote: I get `objectGUID` data from LDAP as binary data. I need to convert `ubyte[]` data into a readable `UUID`. As far as I understand, it is possible to do this via `toHexString()`, but I have reached a dead end. Is there a way to make it more elegant, like [this technique](https://dlang.org/phobos/std_uuid.html#.UUID)? ``` ubyte[] => [159, 199, 22, 163, 13, 74, 145, 73, 158, 112, 7, 192, 12, 193, 7, 194] hex => 9FC716A30D4A91499E7007C00CC107C2 ``` auto uuid = UUID(*cast(ubyte[16]*)youruuiddata.ptr); -Steve
Re: Convert binary to UUID from LDAP
On Monday, 27 March 2023 at 18:33:46 UTC, novice2 wrote:
https://run.dlang.io/is/JP01aZ
```
void main(){
import std.stdio: writeln;
import std.format: format;
ubyte[] a = [159, 199, 22, 163, 13, 74, 145, 73, 158,
112, 7, 192, 12, 193, 7, 194];
string b = format("%(%.2X%)",a);
writeln(b);
}
```
Yes, the same result. I probably didn't write my post quite
correctly. I mean get the UUID data type itself. Just using [this
example](https://dlang.org/phobos/std_uuid.html#.UUID)
`cast(ubyte[16])ubyte[]` will not work, conversion error.
Re: Convert binary to UUID from LDAP
On Monday, 27 March 2023 at 17:56:22 UTC, Alexander Zhirov wrote:
I get `objectGUID` data from LDAP as binary data. I need to
convert `ubyte[]` data into a readable `UUID`. As far as I
understand, it is possible to do this via `toHexString()`, but
I have reached a dead end. Is there a way to make it more
elegant, like [this
technique](https://dlang.org/phobos/std_uuid.html#.UUID)?
```
ubyte[] => [159, 199, 22, 163, 13, 74, 145, 73, 158, 112, 7,
192, 12, 193, 7, 194]
hex => 9FC716A30D4A91499E7007C00CC107C2
```
https://run.dlang.io/is/JP01aZ
```
void main(){
import std.stdio: writeln;
import std.format: format;
ubyte[] a = [159, 199, 22, 163, 13, 74, 145, 73, 158,
112, 7, 192, 12, 193, 7, 194];
string b = format("%(%.2X%)",a);
writeln(b);
}
```
Convert binary to UUID from LDAP
I get `objectGUID` data from LDAP as binary data. I need to convert `ubyte[]` data into a readable `UUID`. As far as I understand, it is possible to do this via `toHexString()`, but I have reached a dead end. Is there a way to make it more elegant, like [this technique](https://dlang.org/phobos/std_uuid.html#.UUID)? ``` ubyte[] => [159, 199, 22, 163, 13, 74, 145, 73, 158, 112, 7, 192, 12, 193, 7, 194] hex => 9FC716A30D4A91499E7007C00CC107C2 ```
