So after testing it for a day, I found a problem. Specifically, if you're
using annotations on replies my simple script broke. The reason is that the
arguments ended up being:
[...] draft filename -idanno N
Where "N" was the file descriptor to write the annotation to; my previous
iteration assumed the last argument to post was the filename.
I ended up having to do this code (complete script appended at the end):
find_draftmessage() {
skip_next=0
for arg; do
case "$arg" in
-al* | -filt* | -wi* | -client | -idanno | -server | \
-partno | -saslmaxssf | -saslmech | -user | -por* | \
-file* | -mhl* | -mt* | -cr* | -lib* | -oauth)
skip_next=1
;;
-*) skip_next=0;
;;
*)
if [ "$skip_next" -eq 0 ]; then
draftmessage="$arg"
return 0
fi
skip_next=0
;;
esac
done
echo "Cannot find draft message name in argument list"
exit 1
}
I am just wondering out loud if there is a better way than putting knowledge
in the script of whether a particular switch takes an argument. It just
seems brittle to me. Ideas? Other approaches?
--Ken
#!/bin/sh
#
# localpostproc - decide where to send email based on the draft message
#
#
# Find out which message is the draft message; yes, this sucks
#
find_draftmessage() {
skip_next=0
for arg; do
case "$arg" in
-al* | -filt* | -wi* | -client | -idanno | -server | \
-partno | -saslmaxssf | -saslmech | -user | -por* | \
-file* | -mhl* | -mt* | -cr* | -lib* | -oauth)
skip_next=1
;;
-*) skip_next=0;
;;
*)
if [ "$skip_next" -eq 0 ]; then
draftmessage="$arg"
return 0
fi
skip_next=0
;;
esac
done
echo "Cannot find draft message name in argument list"
exit 1
}
realpost="$(mhparam libdir)/post"
if [ $# -eq 0 ]; then
echo "Usage: [post switches] filename"
exit 1
fi
find_draftmessage "$@"
fromhost=$(scan -format '%(host{from})' -file "$draftmessage")
if [ $? -ne 0 ]; then
echo "Unable to run scan on draft file $draftmessage, aborting"
exit 1
fi
if [ -z "$fromhost" ]; then
echo "Could not determine hostname of From: address"
exit 1;
fi
case "$fromhost" in
*.some.other.host)
postflags="-server some.other.server -sasl -port submission"
;;
pobox.com)
postflags="-server smtp.pobox.com -sasl -tls -port submission"
;;
*)
echo "Don't know how to send email from $fromhost"
exit 1
;;
esac
exec "$realpost" $postflags "$@"
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