Bug#348509: add support for local archives

[Timo Aaltonen <tjaalton@cc.hut.fi>]

Here's a new version of generators/60local. I've added support for 
deb-src, and the syntax for apt-setup/local../repository has changed. 
Also the key handling is now a bit more robust, because every key is 
on it's own file.

Colin suggested that the templates are not necessary because a dummy 
template is generated on the fly if needed. I'm not sure what happens if 
the db_get-commands fail in the case that some settings are not set.

--

#!/bin/sh
set -e

. /usr/share/debconf/confmodule

file="$1"

# initial value
i=0
while db_get "apt-setup/local$i/repository" && [ "$RET" ]; do
        repository="$RET"
        db_get apt-setup/local$i/comment
        comment="$RET"
        db_get apt-setup/local$i/key
        key="$RET"
        echo >> $file
        cat >> $file <<EOF
## $comment
deb $repository
EOF
        # if true, add a line for deb-src
        db_get apt-setup/local$i/source
        if [ "$RET" = true ]; then
                cat >> $file <<EOF
deb-src $repository
EOF
        if [ -n $key ]; then
                # fetch the key
                wget $key -O /tmp/key$i.pub
                # add it to the keyring
                apt-key add /tmp/key$i.pub
        fi
        # increase $i by 1
        i="$(($i + 1))"
done