snntpd - small news server
is a small news server. It needs to be run under inetd or
tcpserver, as root or as the owner of /var/spool/sn. snntpd
fork into the background. It expects to read and write from and to the network
on descriptors 0 and 1.
... (usually /usr/bin/logger) is taken to be a logging program, and
all log output is piped to it. If logger
... is not specified, log
messages are directed to descriptor 2.
- -t timeout
- specifies how long snntpd should wait for input
before it gives up and exits. timeout is in seconds and defaults to
- snntpd includes it's pid in log output.
- Suppress NNTP greeting on startup. This is useful if you
want to perform authentication before running snntpd, or want to
provide your own greeting, from a wrapper.
Posts are usually handled externally by the /usr/sbin/SNPOST
which is responsible for fine-grain posting control; handling of control
messages; and the ultimate distribution of the posted article.
permits or denies posting in a very simple manner:
exists, posting is not allowed.
Otherwise, if the environment variable POSTING_OK
is not set, posting is
Otherwise if POSTING_OK
is set (to the empty string), posting is
generally allowed, and all POSTed articles are piped to the SNPOST
script, which has the final say in the matter. The value of $POSTING_OK
is not currently used, but is reserved.
- If this file exists, and is a fifo, snntpd will
write the name of a newsgroup into it as that newsgroup becomes the
current one. If the fifo does not exist snntpd will not create it.
- If this file exists, snntpd will display its first
line and exit. If the file can't be read or is empty, a default message is
displayed. This is useful for temporarily disabling the news server while
you perform any maintenance.
- See POSTING PERMISSIONS above.
- If this script or program exists, it is invoked instead of
SNPOST to accept a posted article.
- These files really belong to SNPOST, and it is
unfortunate that snntpd has to check for their existence to
determine the posting flag for the LIST command. See
- If this file exists, its first line is taken as the
description of that group for use with the LIST NEWSGROUPS command.
- is a binary file containing entry times, to support the
- is an empty file retained for it's timestamp, to support
the NEWGROUPS command.
catches SIGHUP, the files
} (see below) are
checked again, as they are during startup. Other signals have default
See also /usr/sbin/SNPOST
for a list of environment variables exported by
- The PATH must be set such that snntpd can find
SNPOST in order to accept postings. If PATH does not include
/usr/sbin, /usr/sbin will be appended to it.
- This variable helps determine the site-wide posting policy.
See POSTING PERMISSIONS above.
- If this value is set, it is taken to be the dotted-quad IP
address of the connecting client. If it is not set, snntpd attempts
to derive it for itself, and then set its value.
- as above, but for the server's dotted-quad IP.
- If this is set and is not empty, the value is used
everywhere in place of /var/spool/sn, the default news spool