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#!/bin/bash

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# vim: set ft=sh :

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set -ue

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if [ $0 == './update' ]; then

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    SRV=$(pwd)

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    OPT=./opt

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else

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    SRV=${SRV:-/srv/dns}

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    OPT=${SRV:-/srv/dns/opt}

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    cd $SRV

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fi

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# charset for files under etc/

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CHARSET='utf-8'

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# External bins

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NAMED_CHECKZONE=/usr/sbin/named-checkzone

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DHCPD=/usr/sbin/dhcpd

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DHCPD_CONF=/etc/dhcp/dhcpd.conf

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DHCPD_INIT=/etc/init.d/isc-dhcp-server

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HG=/usr/bin/hg

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HG_ARGS=(--config trusted.users=root)

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RNDC=/usr/sbin/rndc

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RNDC_KEY=/etc/bind/rndc.key

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# Library includes

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source lib/update

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## Flags

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# set by do_reload_zone if zone data has actually been reloaded

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RELOAD_ZONES=

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## Site settings, used as arguments to scripts

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# Origin domain to generate reverse records for in --reverse-zone

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REVERSE_DOMAIN=paivola.fi

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## Do things

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function update {

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    log "Testing hosts..."

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    for hosts in $(list_files etc/hosts); do

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        log_warn "TODO: check_hosts $hosts"

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    done

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    ## Hosts

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    log "Updating forward host zones..."

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    done

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    log "Updating DHCP hosts..."

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    for hosts in $(list_files etc/hosts); do

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        update_hosts_dhcp       "var/dhcp/hosts/$hosts.conf"        \

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            "etc/hosts/$hosts"

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    done

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    log "Updating reverse host zones..."

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    done

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    ## Zones

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    log "Copying zone includes..."

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    for zone in $(list_files etc/zones/includes); do

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        copy                "var/zones/includes/$zone"      "etc/zones/includes/$zone"

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    done

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    log "Updating zone serials..."

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    for zone in $(list_files etc/zones); do

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        update_serial       "var/serials/$zone"             \

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            "etc/zones/$zone" $(zone_includes var/include-cache/$zone etc/zones/$zone var/zones/)

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    done

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    log "Updating zones..."

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    for zone in $(list_files etc/zones); do

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        update_zone         "var/zones/$zone"               "etc/zones/$zone"       "var/serials/$zone"

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    done

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    log "Updating DHCP confs..."

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    for conf in $(list_files etc/dhcp); do

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        update_dhcp_conf    "var/dhcp/$conf"                "etc/dhcp/$conf"

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    done

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    ## Check

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    log "Testing zones..."

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    for zone in $(list_files etc/zones); do

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        check_zone          "var/zones/$zone"       $zone

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    done

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    log "Testing DHCP confs..."

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    for conf in var/dhcp/*.conf; do

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        check_dhcp          $conf

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    done

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    ## Deploy

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    log "Reload zones..."

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        reload_zones

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    log "Reload dhcp..."

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        reload_dhcp

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    log "Commit..."

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        commit      etc

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}

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## Main entry point

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function main {

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    parse_args "$@"

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    ## Input dirs

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    for dir in etc etc/zones etc/hosts opt; do

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        [ -d $dir ] || die "Missing directory: $dir"

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    done

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    ## Output dirs

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    ensure_dir      var

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    for dir in var/dhcp var/zones var/serials var/include-cache; do

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        ensure_dir  $dir

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    done

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    for dir in var/dhcp/hosts; do

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        ensure_dir  $dir

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    done

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        ensure_dir  $dir

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    done

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    ## Go

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    update

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}

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main "$@"