postinst is in mailman3 3.1.1-9.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172  | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
. /usr/share/dbconfig-common/dpkg/postinst
# Set permissions for sqlite3 file
dbc_dbfile_owner="list:list"
dbc_dbfile_perms="0660"
dbc_go mailman3 "$@"
cleanup () {
    [ "$mailmancfg_new" ] && rm -f "$mailmancfg_new"
}
upgrade_fixes () {
    version="$(dpkg -s $DPKG_MAINTSCRIPT_PACKAGE | sed -n 's/^Version: //p')"
    if dpkg --compare-versions "$version" le "3.1.1-7"; then
        ucfr --force mailman3 /etc/mailman3/mailman.cfg
    fi
}
init_service_failed () {
    db_input high mailman3/init_service_failed || true
    db_go
}
# All seds are using a vertical pipe "|" as a delimiter because of
# the potential presence of a slash "/" into some variables, as those
# filled with a base64 -w0. We thought about using a number sign "#",
# but sometimes the delimiter follows a variable sign "$", and "$#"
# might be interpreted by the shell.
create_config () {
    trap cleanup EXIT
    mailmancfg_new=`tempfile -m 0640`
    cp -a /usr/share/mailman3/mailman.cfg.sample $mailmancfg_new
    # get database settings from dbconfig-common
    if [ -f /etc/dbconfig-common/mailman3.conf ]; then
        . /etc/dbconfig-common/mailman3.conf
        # Comment out default database settings if dbconfig is used
        sed -i -e 's|^\s*class: mailman\.database\..*$|#&|' \
            $mailmancfg_new
        sed -i -e 's|^\s*url: [a-z+]\+://.*$|#&|' \
            $mailmancfg_new
    fi
    case "$dbc_dbtype" in
        pgsql)
            sed -i -e 's|^#\?\s*\(class: mailman\.database\.postgresql\.PostgreSQLDatabase\)$|\1|' \
                $mailmancfg_new
            sed -i -e "s|^#\?\s*url: postgres://.*$|url: postgres://$dbc_dbuser:$dbc_dbpass@$dbc_dbserver/$dbc_dbname|" \
                $mailmancfg_new
            ;;
        mysql)
            sed -i -e 's|^#\?\s*\(class: mailman\.database\.mysql\.MySQLDatabase\)|\1|' \
                $mailmancfg_new
            sed -i -e "s|^#\?\s*url: mysql+pymysql://.*$|url: mysql+pymysql://$dbc_dbuser:$dbc_dbpass@$dbc_dbserver/$dbc_dbname?charset=utf8\&use_unicode=1|" \
                $mailmancfg_new
            ;;
        sqlite3)
            sed -i -e 's|^#\?\s*\(class: mailman\.database\.sqlite\.SQLiteDatabase\)$|\1|' \
                $mailmancfg_new
            sed -i -e 's|^#\?\s*url: sqlite:///.*$|url: sqlite:///$DATA_DIR/mailman.db|' \
                $mailmancfg_new
            ;;
        "")
            ;;
        *)
            echo "Unsupported database type $dbc_type."
            exit 1
            ;;
    esac
    # Get admin_pass from mailman.cfg if existent
    [ -f /etc/mailman3/mailman.cfg ] && {
        admin_pass="$(sed -ne 's|^\s*admin_pass:\s*||p' /etc/mailman3/mailman.cfg)"
    }
    # If this is the default password, forget it!
    [ "$admin_pass" = "restpass" ] && unset admin_pass
    # Generate a new one
    while [ -z "$admin_pass" ]; do
        admin_pass="$(dd if=/dev/urandom bs=1 count=200 2>/dev/null \
            | base64 -w0 | sed -ne 's|\(.\{48\}\).*|\1|p')"
    done
    # Set new admin_pass in mailman.cfg
    sed -i -e "s|^\(\s*admin_pass:\s*\)\S\+$|\1$admin_pass|" $mailmancfg_new
    db_get mailman3/config_hyperkitty
    res="$RET"
    if [ "$res" = "true" ]; then
        cat /usr/share/mailman3/mailman_cfg_hyperkitty_snippet.cfg \
            >>$mailmancfg_new
    fi
    # Register new config file
    ucf --three-way --debconf-ok "$mailmancfg_new" /etc/mailman3/mailman.cfg
    ucfr mailman3 /etc/mailman3/mailman.cfg
    chmod 0640 /etc/mailman3/mailman.cfg
    chown root:list /etc/mailman3/mailman.cfg
    rm -f $mailmancfg_new
}
case "$1" in
    configure)
        upgrade_fixes
        create_config
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
# Automatically added by dh_python3:
if which py3compile >/dev/null 2>&1; then
	py3compile -p mailman3 -V 3.5-
fi
# End automatically added section
# Automatically added by dh_installsystemd/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# In case this system is running systemd, we need to ensure that all
	# necessary tmpfiles (if any) are created before starting.
	if [ -d /run/systemd/system ] ; then
		systemd-tmpfiles --create /usr/lib/tmpfiles.d/mailman3.conf >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "/etc/init.d/mailman3" ]; then
		update-rc.d mailman3 defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d mailman3 $_dh_action || init_service_failed
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'mailman3.service' >/dev/null || true
	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'mailman3.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'mailman3.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'mailman3.service' >/dev/null || true
	fi
fi
# End automatically added section
db_stop
exit 0
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