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Many functions use low-level socket interface for connection or various checks. However, most of the time we don't respect automatic address family detection but rather try to force our values. This may cause either redundat connection tries when an address family is disabled on system tries or even crashes when socket exceptions are not properly caught. Instead of forcing address families to socket, rather use getaddrinfo interface to automatically retrieve a list of all relevant address families and other connection settings when connecting to remote/local machine or binding to a local port. Now, we will also fill correctly all connection parameters like flowinfo and scopeid for IPv6 connections which will for example prevent issues with scoped IPv6 addresses. bind_port_responder function was changed to at first try to bind to IPv6 wildcard address before IPv4 as IPv6 socket is able to accept both IPv4 and IPv6 connections (unlike IPv4 socket). nsslib connection was refactored to use nss.io.AddrInfo class to get all the available connections. Socket is now not created by default in NSSConnection class initializer, but rather when the actual connection is being made, becase we do not an address family where connection is successful. https://fedorahosted.org/freeipa/ticket/2913 https://fedorahosted.org/freeipa/ticket/2695
This is a set of libraries common to IPA clients and servers though mostly
geared currently towards command-line tools.
A brief overview:
config.py - identify the IPA server domain and realm. It uses python-dns to
try to detect this information first and will fall back to
/etc/ipa/default.conf if that fails.
ipautil.py - helper functions
entity.py - entity is the main data type. User and Group extend this class
(but don't add anything currently).
ipavalidate.py - basic data validation routines