r2 - 2011-03-06 - 10:33:46 - HalMurrayYou are here: NTP >  Dev Web > NtpdConfigFileParsing
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ntp-4.2.8p15 was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.

Please see the NTP Security Notice for vulnerability and mitigation details.

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Parsing ntp.conf - the config file for ntpd

Needed Tools

We process ntpd/ntp_parser.y with bison because we get much better error messages that way, and we also get a useful table of token symbolic names.

We used to allow building with yacc, but we stopped when we discovered we needed the token symbolic name tables.

What files are involved

  • ntpd/ntp_parser.y
    • ntpd/ntp_parser.c
  • ntpd/keyword-gen.c (see comments at top)
    • ntpd/ntp_keyword.h
    • ntpd/keyword-get-utd
  • ntpd/ntp_config.c

Indented files are derived from the file above.

-- HarlanStenn - 2011-03-06

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