sntpd v3.1

Changes

• Slightly improved log messages when failing to resolve DNS names
• Update co-author's last name, changed from Nilsson to Wiberg 2021

Fixes

• Call res_init() when retrying resolving DNS names, this fixes long
  hangs in setup_socket() which sntpd seemingly never recover from.
  This in turn caused it to not respond to SIGTERM properly, while in
  this state (init)
• When either of bind() or connect() fail in setup_socket(),
  return back to main loop() to handle retries, and catch signals

sntpd v3.0

First release as sntpd, with support for both acting as a (very limited) server and a client. It is a "multicall" binary where it can be called as ntpclient to simulate the behavior of the original ntpclient.

Packages for Debian 10, and compatible Ubuntu releases, available at https://deb.troglobit.com/

Changes

• Initial support for a very limited server mode, enabled by default on port 123. The server reports itself as strata 1 and LOCL clock. The root delay and root dispersion calculation is rough at best. Much of the server calculation is inspired by the BusyBox ntpd, please use that one instead
• Changes to Debian packaging, adjtimex is now in its own .deb
• New, stripped down, command line options when called as sntpd
• Updates to man page, new name and separate command line options
• Drop OpenWRT mini-ntpclient.c from project, with configure option
• Drop --disable-syslog configure option
• Drop support for really old systems, no more gettimeofday()

Fixes

• Fix #4: Rename project from ntpclient to sntpd to avoid confusion with the original ntpclient. This change also restores original command line options, and semantics, when called with the name ntpclient
• Fix man page spelling errors, found by lintian
• Add workaround for missing SIGGSTAMP on Linux 5.1 and later
• Fix issues found by Coverity Scan:
  • check return value of send()
  • handle uninitialized socket

ntpclient v2018_244

Changes

• Add HOWTO.md to distribution and install into docs

Fixes

• Issue #3: Open network socket using the address family returned by the hostname, or address, lookup. Fix by Laura Fang

ntpclient v2018_176

The Stuttgart release. Curated by Joachim Nilsson.

Changes

• NTP server argument is now optional, default: pool.ntp.org
• Restore .tar.gz archives for make dist and release
• Make .deb file part of release
• Cleanup and simplify README
• Renamed doc/ to docs/
• Moved TODO and CONTRIBUTING.md to docs/

Fixes

• Issue #2: Missing fallback to IPv4 on systems with IPv6 disabled

ntpclient v2017.246

Curated by Joachim Nilsson.

Changes

• Log successful resolve of NTP host when network has been down
• Add support for building .deb package

Fixes

• Fix build warnings
• Define _DEFAULT_SOURCE, needed with newer GLIBC
• Do not overload in6addr_any, exists in netinet/in.h

ntpclient v2017.217

Changes

• Add support for IPv6, thanks to Dieter Ries
• Behavior change: -L now required with -n, otherwise stdout is used. This to conform with de facto UNIX daemon behavior.
• Convert to GNU Configure & Build System, with proper --enable-opts for all optional features, like precision and mini NTP client
• Relocate files to doc/ and src/ subdirectories
• Reindent to Linux kernel coding style and add CONTRIBIBUTING.md to help newcomers with basic project info
• Cleanup README and HOWTO, move to Markdown format for comfortable presentation on GitHub
• Update and refactor ntpclient.8 and adjtimex.1 into mdoc format
• Move change log from README to separate CHANGELOG file in a format proposed by http://keepachangelog.com/
• Merge in changes from 2015_365 by Larry
• Add missing COPYING file, GNU license should be included
• Add systemd unit file for running ntpclient as a daemon
• Add initial Debian packaging to be able to create .deb files

Fixes

• Massive cleanup and build fixes to to mini-ntpclient.c from DD-WRT
• Fix compiler warnings for unused variables when ENABLE_DEBUG is unset
• Fix build error when building without ENABLE_SYSLOG support
• Fixes for non-GNU libc systems, replace %m and __progname
• Retry DNS lookup of NTP server, useful at boot and if net goes down
• Restart/reopen network socket at least once a day to prevent lockup