Changelog

Release 2.0.0post1 - Maintenance release

  • This fixes the incorrectly provided extra rest in the dependency metadata. This extra has become obsolete and removing it fixed versioning errors when installing puresnmp.

Release 2.0 (starting from and including 2.0.0a0)

Warning

This is a major upgrade! It is not compatible with client-code based on puresnmp v1.x

Refer to Upgrading from v1.x to v2.x for details

  • [changed] Changed back from poetry to setuptools due to too many stumbling blocks during development with poetry.

  • [changed] Main API functions moved into “client” classes Client and PyWrapper. See Upgrading from v1.x to v2.x.

  • [changed] Extracted x690 processing into separate package x690. This changed the behaviour of x690.types.ObjectIdentifier

  • [changed] “continuing” OIDs of bulk-walks removed from logging. This caused too much noise in general and was only useful during development of puresnmp itself.

  • [changed] The old inconsistent “VarBind” class has been split into puresnmp.varbind.VarBind and puresnmp.varbind.PyVarBind

  • [changed] Some data-types now correctly wrap None instead of b"":

    • NoSuchObject

    • NoSuchInstance

    • EndOfMibView

  • [added] Type-Hints for table and bulktable calls

    It is now possible to attach a “TypedDict” reference to [bulk]table calls via the _rowtype argument.

  • [added] Support for SNMPv3

    • Builting support for auth-protocols “md5” and “sha1”.

    • Encryption provided by the plugin package puresnmp-crypto. Installable by activating the [crypto] “extra” in your dependencies.

  • [added] Plugin based architecure to support multiple protocols (see Plugins)

  • [added] Builtin support for the SNMP IPv4 data-type. IPv6 has no defined data-type in the context of SNMP. Instead it is defined in a separate RFC/MIB which is why it is not inclued.

  • [added] New exception types based on RFC 3416

  • [added] Allow temporarily overriding client defaults via puresnmp.api.raw.Client.reconfigure()

Release 1.10.2.post1

This is a “house-keeping” commit. No new features or fixes are introduced.

  • [changed] Packaging and publishing switched over to poetry

Release 1.10.2

  • [fixed] Speed improvements for overflowing counters (See #88 by Alexey Minevich)

Release 1.10.1

  • [fixed] Don’t crash with an IndexError when an error-status is returned from a device without specifying an offending OID (See #89 by Lopolio)

Release 1.10.0

  • [support] Expose SNMP “version” argument to more API endpoints for extended SNMPv1 support (See #87 by Nikolaj Rahbek). Impacted functions are:

    • puresnmp.api.pythonic.get()

    • puresnmp.api.pythonic.getnext()

    • puresnmp.api.pythonic.walk()

    • puresnmp.api.pythonic.set()

    • puresnmp.api.pythonic.multiset()

    • puresnmp.api.raw.get()

    • puresnmp.api.raw.getnext()

    • puresnmp.api.raw.set()

    • puresnmp.api.raw.multiset()

Release 1.9.1

  • [fixed] Fix a regression introduced by 1.9 causing exception message to get dropped (#85)

Release 1.9.0.post1

  • [docs] Add dummy changelog entry for 1.8.0

Release 1.9.0

  • [added] Added TrapInfo.origin containing the IP-address of the host emitting the SNMP Trap (See #79, by Richard Smith).

  • [added] Allow specifying the SNMP version on “set” operations (See #77, by Mischa Spiegelmock).

  • [added] Support for SNMPv1 for multigetnext (by Mischa Spiegelmock)

  • [support] Better(?) type hinting

  • [support] Introdce puresnmp.snmp with SNMP-specific data structures (refactored out from puresnmp.pdu.

  • [support] Some unit-test house-keeping for Python < 3.6

Release 1.8.0

This release never existed due to a mixup with the package version in a pull-request.

Release 1.7.4

  • [fixed] Removed a regression from 1.7.0: Table outputs should be lists in the 1.x branch as documented (#74)

  • [fixed] Removed a type-hint which tripped up mypy (#75)

  • [fixed] Fix decoding of unsigned integer values (#76)

Release 1.7.3

  • [support] Make bulktable() available via the package root (#73)

Release 1.7.2

  • [fixed] Fixed a regression introduced in 1.6.3 (commit 7e559d5d) causing modified values for BUFFER_SIZE and RETRIES to be ignored.

Release 1.7.1

  • [fixed] Version 1.7.0 introduced a regression which caused VarBind instances to lose the ability to be indexed. This is now fixed.

Release 1.7.0

  • [added] A new function bulktable is added to all external APIs:

    • puresnmp.api.raw.bulktable

    • puresnmp.api.pythonic.bulktable

    • puresnmp.aio.api.raw.bulktable

    • puresnmp.aio.api.pythonic.bulktable

    This function returns a pseudo-table (just like the normal table function) but uses more efficient SNMP “bulk” requests under the hood.

  • [added] The library now knows how to deal with “T61” string encodings and supports them if they are returned from a device (or sent to a device).

  • [support] The table and bulktable functions no longer require the num_base_nodes argument as it was redundant with the OID. Now, if it is used, it will emit a deprecation warning and will be removed in a future release.

  • [support] The bulkwalk table now also takes an optional timeout argument.

  • [support] The default TCP timeout is now set via the module-level variable puresnmp.const.DEFAULT_TIMEOUT. This can still be overridden by using the timeout argument on function calls.

  • [support] (internal) The X.690 tablify function now optionally takes an OID as table “base”, which is easier than passing in the number of base-nodes.

  • [fixed] The “retries” and “buffer_size” arguments were not properly handed over to the “transport” layer which is now fixed.

  • [quality] More automation via GitHub actions (fixed in 1.7.0.post1)

  • [quality] Code cleanup and type hint improvements. But there’s still a lot of work to be done on the typing front.

Release 1.6.4

  • [fixed] puresnmp is now also Python 3.8 compatible

Release 1.6.3

  • [fixed] Network socket is now properly closed when the maximum number of retries has reached. This fixes emissions of Python resource warnings.

Release 1.6.2

  • [support] (1.6.2.post1) - Type hints for puresnmp.x690.types.ObjectIdentifier improved

  • [fixed] Counter32 and Counter64 values no longer increase above max-value and properly wrap back to 0 as defined in RFC-2578 Section 7.1.6 and RFC-2578 Section 7.1.10.

    If a value is more than one unit above the max-value the behaviour is undefine in that RFC as it assumes monotonically increasing values. As a design decision I decided to initialise the value using the overflow amount. So a counter initialised to 40 above maximum, will have the value 40.

Release 1.6.1

  • [fixed] Regression caused in 1.6.0 due to socket timeout argument.

Release 1.6.0

  • [new] SNMPv2 Trap support (see the cookbook for an example).

  • [internal] Network transport functions are now wrapped by a class.

Release 1.5.2.post1

  • [fixed] Add missing file for PEP-561 compliance.

Release 1.5.2

  • [fixed] No longer raise an exception when using snmp.set with an absolute OID (an OID with leading dot).

Release 1.5.1

  • [fixed] Socket connections no longer read multiple times from the same UDP socket. An appropriate error is now raised puresnmp.x690.exc.InvalidValueLength when a returned package is larger than the default buffer-size.

    To increase the buffer size, simply set the appropriate value to puresnmp.transport.BUFFER_SIZE.

Release 1.5.0

  • [new] The buffer-size of low-level socket calls can now be modified via the global variable puresnmp.transport.BUFFER_SIZE.

  • [new] Sequence instances are now “sized” (it is now possible to call len() on a sequence).

  • [new] Applied missing bugfixes to the async code (ensured that the aio API behaves the same way as the normal API).

  • [fix] Properly handle endOfMibView markers in responses (Issue #54)

  • [fix] Synced bugfixes of the non-async code with the async code. They should now behave identically.

  • [fix] An error message in bulkget responses now shows the proper OID count.

  • [support] Reading “ASCII/Hex” files in unit-tests is now a bit more flexible and can read more formats.

Release 1.4.1

  • [fix] Fixed a regression which was introduced in v1.3.2

Release 1.4.0

  • [new] PEP 561 compliance (since 1.4.0.post1)

  • [new] asyncio support via puresnmp.aio (Thanks to @acspike).

  • [new] Much better error detail if the SNMP agent returns a response with an error-code. See puresnmp.exc.ErrorResponse.

  • [new] The ObjectIdentifier class now has two convenience methods childof() and parentof(). They merely delegat to __contains__ but can make code more readable.

Release 1.3.2

  • [fix] Fixed a regression introduced by v1.3.1 for Python < 3.6.

Release 1.3.1

  • [fix] Fixed an endless loop caused by some network devices with broken SNMP implementations. This will now raise a FaultySNMPImplementation exception unless errors=puresnmp.api.raw.ERRORS_WARN is passed to walk operations.

Release 1.3.0

  • [new] Python 2 support (Royce Mitchell).

  • [new] Expose timeout argument in additional functions.

  • [new] Walk operations now yield rows as they come in over the network instead of materialising them in memory (Royce Mitchell).

  • [new] Introduce puresnmp.api.raw with same signatures as puresnmp but for for non-pythonized output.

  • [new] ObjectIdentifier.from_string now allows a leading ..

  • [new] Collections of ObjectIdentifier instances are now sortable.

  • [new] Enforce str type in ObjectIdentifier.from_string.

  • [new] ObjectIdentifier now supports __len__:

    len(ObjectIdentifier(1, 2, 3)) == 3

  • [new] ObjectIdentifier instances can now be converted to int (if they only have one node):

    int(ObjectIdentifier(5)) == 5

  • [new] ObjectIdentifier instances can now be concatenated using +:

    ObjectIdentifier(1) + ObjectIdentifier(2) == ObjectIdentifier(1, 2)

  • [new] ObjectIdentifier instances are now indexable:

    ObjectIdentifier(1, 2, 3)[1] == ObjectIdentifier(2)

  • [new] The SNMP type IpAddress is now properly transcoded to the Python IPv4Address type (via RFC3416).

  • [changed] NonASN1Type is now deprectated. Use UnknownType instead (Royce Mitchell).

  • [fix] ObjectIdentifier(0) is now correctly detected & transcoded.

  • [fix] port no longer ignores the port argument.

  • [fix] Avoid potential error in reported OctetString length.

  • [fix] UDP connection retries are now handled properly.

  • [code-quality] Improved type-hints.

  • [code-quality] Update contribution guide, adding code-style rules. Added an appropriate pylintrc and fixed some style violations.

Release 1.2.1

  • Clarify error message if a bulkwalk is requested with non-iterable OIDs.

Release 1.2.0

  • Exposed access to the timeout value. Each SNMP call not takes an optional timeout value which specifies the timeout in seconds (Thomas Kirsch).

Release 1.1.0

  • puresnmp.bulkwalk() and puresnmp.bulkget() have been implemented.

  • More “cookbook” examples

  • puresnmp.walk() and puresnmp.table() operations now return pythonized values (as it should be).

  • Types are now properly detected. NonASN1Type should no longer show up.

  • Walking over the end of the OID tree no longer raises an exception.

  • SNMP TimeTicks are now parsed into datetime.timedelta instances.

  • port is now optional for GetNext requests (using 161 by default)

  • VarBinds can now only be created with ObjectIdentifier or str instances as first element.

  • puresnmp.multiwalk() is now more generic and the backbone of both bulkwalk and walk.

  • Fixed issue with ReadTheDocs

  • More unit tests

Internal changes for better RFC3416 conformance

  • Using real PDU “type” values (tags).

  • Renamed “error_code” to “error_status”.

  • Added error statuses from RFC3416.

  • Opaque now inherits from OctetString.

  • IpAddress now inherits from OctetString.

  • Added support for Counter64 values.

  • Raising an error when requesting too many varbinds.

  • Renamed puresnmp.SnmpMessage to puresnmp.PDU

Notable bugfixes on the 1.1.x branch

  • Some internal types leaked to the outside. This is no longer the case (fixed in v1.1.1)

  • Raw packets are logged using the DEBUG level (“fixed” in v1.1.1).

  • Fixed encoding of long length values (fixed in v1.1.2)

  • v1.1.3 added minor internal fixes.

  • Fixed IP-Address Header (fixed in v1.1.4)

  • Fixed signed integers (fixed in v1.1.5)