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* check_ntp_time: add polling delay
NTP server can have rate limiting which might be triggered by
check_ntp_time due to many requests in a short time span.
This patch adds a default delay (of 0.5s) between requests to each server
and a command line option (--poll-delay) to make this delay
configurable.
Co-authored-by: Lorenz Kästle <lorenz@vulgrim.de>
* check_ntp_time: verify whether socket path fits into address struct
check_ntp_time could be give a too long (>108 bytes) socket path
to work with, which would potentially crash the program.
This patch validates to length beforehand and stops execution
in that case.
Co-authored-by: Lorenz Kästle <lorenz@vulgrim.de>
---------
Co-authored-by: Paul Crawford <paul@crawford-space.co.uk>
Co-authored-by: Lorenz Kästle <lorenz@vulgrim.de>
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