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Native Windows Kerberos authentication via Win32's SSPI API. #2204

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manuco opened this issue Feb 10, 2021 · 0 comments
Open

Native Windows Kerberos authentication via Win32's SSPI API. #2204

manuco opened this issue Feb 10, 2021 · 0 comments

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@manuco
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manuco commented Feb 10, 2021 •
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Hello,

Would you be interested in a PR allowing Windows Kafka-Python clients to connect to a GSSAPI enabled Kafka cluster, using the Windows Kerberos authentication ?

I've written a POC that does this : uses my Active Directory identity stored in my Windows session (and accessed via the Microsoft SSPI API) to access a Kafka cluster that use a GSSAPI authentication.

It involves :

  • an optional dependency on pywin32, to access the SSPI API
  • a new class that abstract the GSSAPI negotiation to switch between SSPI and GSSAPI based on what is found

I would be OK to push these changes, but I want to be sure that there is some interest for it.
@manuco manuco mentioned this issue Mar 30, 2021
Open
mattoberle added a commit to mattoberle/kafka-python that referenced this issue Aug 20, 2021
@mattoberle
Support custom SASL mechanisms
03c357f 
There is some interest in supporting various SASL mechanisms not
currently included in the library:

* dpkp#2110 (DMS)
* dpkp#2204 (SSPI)
* dpkp#2232 (AWS_MSK_IAM)

Adding these mechanisms in the core library may be undesirable due to:

* Increased maintenance burden.
* Unavailable testing environments.
* Vendor specificity.

This commit provides a quick prototype for a pluggable SASL system.

---

**Example**

To define a custom SASL mechanism a module must implement two methods:

```py

def validate_config(conn):
    # Check configuration values, available libraries, etc.
    assert conn.config['vendor_specific_setting'] is not None, (
        'vendor_specific_setting required when sasl_mechanism=MY_SASL'
    )

def try_authenticate(conn, future):
    # Do authentication routine and return resolved Future with failed
    # or succeeded state.
```

And then the custom mechanism should be registered before initializing
a KafkaAdminClient, KafkaConsumer, or KafkaProducer:

```py

import kafka.sasl
from kafka import KafkaProducer

import my_sasl

kafka.sasl.register_mechanism('MY_SASL', my_sasl)

producer = KafkaProducer(sasl_mechanism='MY_SASL')
```

---

**Notes**

**ABCs**

This prototype does not implement an ABC for custom SASL mechanisms.
Using an ABC would reduce a few of the explicit assertions involved with
registering a mechanism and is a viable option. Due to differing feature
sets between py2/py3 this option was not explored, but shouldn't be
difficult.

**Private Methods**

This prototype relies on some methods that are currently marked as
**private** in `BrokerConnection`.

* `._can_send_recv`
* `._lock`
* `._recv_bytes_blocking`
* `._send_bytes_blocking`

A pluggable system would require stable interfaces for these actions.

**Alternative Approach**

If the module-scoped dict modification in `register_mechanism` feels too
clunky maybe the addtional mechanisms can be specified via an argument
when initializing one of the `Kafka*` classes?
@mattoberle mattoberle mentioned this issue Aug 20, 2021
Open
@wbarnha wbarnha mentioned this issue Mar 8, 2024
Closed
wbarnha added a commit to wbarnha/kafka-python-ng that referenced this issue Mar 18, 2024
@wbarnha @mattoberle @code-review-doctor
Support custom SASL mechanisms including AWS MSK (#170)
6ad79a4 
* Support custom SASL mechanisms

There is some interest in supporting various SASL mechanisms not
currently included in the library:

* dpkp#2110 (DMS)
* dpkp#2204 (SSPI)
* dpkp#2232 (AWS_MSK_IAM)

Adding these mechanisms in the core library may be undesirable due to:

* Increased maintenance burden.
* Unavailable testing environments.
* Vendor specificity.

This commit provides a quick prototype for a pluggable SASL system.

---

**Example**

To define a custom SASL mechanism a module must implement two methods:

```py

def validate_config(conn):
    # Check configuration values, available libraries, etc.
    assert conn.config['vendor_specific_setting'] is not None, (
        'vendor_specific_setting required when sasl_mechanism=MY_SASL'
    )

def try_authenticate(conn, future):
    # Do authentication routine and return resolved Future with failed
    # or succeeded state.
```

And then the custom mechanism should be registered before initializing
a KafkaAdminClient, KafkaConsumer, or KafkaProducer:

```py

import kafka.sasl
from kafka import KafkaProducer

import my_sasl

kafka.sasl.register_mechanism('MY_SASL', my_sasl)

producer = KafkaProducer(sasl_mechanism='MY_SASL')
```

---

**Notes**

**ABCs**

This prototype does not implement an ABC for custom SASL mechanisms.
Using an ABC would reduce a few of the explicit assertions involved with
registering a mechanism and is a viable option. Due to differing feature
sets between py2/py3 this option was not explored, but shouldn't be
difficult.

**Private Methods**

This prototype relies on some methods that are currently marked as
**private** in `BrokerConnection`.

* `._can_send_recv`
* `._lock`
* `._recv_bytes_blocking`
* `._send_bytes_blocking`

A pluggable system would require stable interfaces for these actions.

**Alternative Approach**

If the module-scoped dict modification in `register_mechanism` feels too
clunky maybe the addtional mechanisms can be specified via an argument
when initializing one of the `Kafka*` classes?

* Add test_msk.py by @mattoberle

* add msk to __init__ and check for extension in conn.py

* rename try_authenticate in msk.py

* fix imports

* fix imports

* add botocore to requirements-dev.txt

* add boto3 to requirements-dev.txt

* add awscli to requirements-dev.txt

* add awscli to workflow since it takes too long to install normally

* just install botocore i guess

* just install boto3 i guess

* force reinstall awscli

* try something weird

* ok now the dang tests should work and if they don't i'll cry

* skip the msk test for now...

* Revert "skip the msk test for now..."

This reverts commit 1c29667.

* skip the msk test for now...

* nvm just needed to update tox lol

* Update kafka/sasl/gssapi.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/oauthbearer.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/plain.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/scram.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/msk.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

---------

Co-authored-by: Matt Oberle <[email protected]>
Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>
bradenneal1 pushed a commit to bradenneal1/kafka-python that referenced this issue May 16, 2024
@wbarnha @mattoberle
@code-review-doctor @bradenneal1
Support custom SASL mechanisms including AWS MSK (dpkp#170)
2349000 
* Support custom SASL mechanisms

There is some interest in supporting various SASL mechanisms not
currently included in the library:

* dpkp#2110 (DMS)
* dpkp#2204 (SSPI)
* dpkp#2232 (AWS_MSK_IAM)

Adding these mechanisms in the core library may be undesirable due to:

* Increased maintenance burden.
* Unavailable testing environments.
* Vendor specificity.

This commit provides a quick prototype for a pluggable SASL system.

---

**Example**

To define a custom SASL mechanism a module must implement two methods:

```py

def validate_config(conn):
    # Check configuration values, available libraries, etc.
    assert conn.config['vendor_specific_setting'] is not None, (
        'vendor_specific_setting required when sasl_mechanism=MY_SASL'
    )

def try_authenticate(conn, future):
    # Do authentication routine and return resolved Future with failed
    # or succeeded state.
```

And then the custom mechanism should be registered before initializing
a KafkaAdminClient, KafkaConsumer, or KafkaProducer:

```py

import kafka.sasl
from kafka import KafkaProducer

import my_sasl

kafka.sasl.register_mechanism('MY_SASL', my_sasl)

producer = KafkaProducer(sasl_mechanism='MY_SASL')
```

---

**Notes**

**ABCs**

This prototype does not implement an ABC for custom SASL mechanisms.
Using an ABC would reduce a few of the explicit assertions involved with
registering a mechanism and is a viable option. Due to differing feature
sets between py2/py3 this option was not explored, but shouldn't be
difficult.

**Private Methods**

This prototype relies on some methods that are currently marked as
**private** in `BrokerConnection`.

* `._can_send_recv`
* `._lock`
* `._recv_bytes_blocking`
* `._send_bytes_blocking`

A pluggable system would require stable interfaces for these actions.

**Alternative Approach**

If the module-scoped dict modification in `register_mechanism` feels too
clunky maybe the addtional mechanisms can be specified via an argument
when initializing one of the `Kafka*` classes?

* Add test_msk.py by @mattoberle

* add msk to __init__ and check for extension in conn.py

* rename try_authenticate in msk.py

* fix imports

* fix imports

* add botocore to requirements-dev.txt

* add boto3 to requirements-dev.txt

* add awscli to requirements-dev.txt

* add awscli to workflow since it takes too long to install normally

* just install botocore i guess

* just install boto3 i guess

* force reinstall awscli

* try something weird

* ok now the dang tests should work and if they don't i'll cry

* skip the msk test for now...

* Revert "skip the msk test for now..."

This reverts commit 1c29667.

* skip the msk test for now...

* nvm just needed to update tox lol

* Update kafka/sasl/gssapi.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/oauthbearer.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/plain.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/scram.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

* Update kafka/sasl/msk.py

Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>

---------

Co-authored-by: Matt Oberle <[email protected]>
Co-authored-by: code-review-doctor[bot] <72320148+code-review-doctor[bot]@users.noreply.github.com>
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