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dnsmasq: configure dnsmasq via flat config file and not command-line args

Browse Source 
Sometimes it's useful to compare the generated config file from UCI config with a hand-edited dnsmasq config file, especially if you're migrating to an OpenWRT router from something else (such as Astlinux).

Putting the generated config makes it easier to capture and diff, etc.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31182 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
jow 2012-04-02 22:31:21 +00:00
parent 08fc0ba23f
commit 1018d3d279
1 changed files with 78 additions and 53 deletions
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131
package/dnsmasq/files/dnsmasq.init
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@ -8,6 +8,14 @@ SERVICE_USE_PID=1
DNS_SERVERS="" DNS_SERVERS=""
DOMAIN="" DOMAIN=""
CONFIGFILE="/var/etc/dnsmasq.conf"
xappend() {
local value="$1"
echo "${value#--}" >> $CONFIGFILE
}
dhcp_calc() { dhcp_calc() {
local ip="$1" local ip="$1"
local res=0 local res=0
@ -27,7 +35,7 @@ append_bool() {
local value="$3" local value="$3"
local _loctmp local _loctmp
config_get_bool _loctmp "$section" "$option" 0 config_get_bool _loctmp "$section" "$option" 0
[ $_loctmp -gt 0 ] && append args "$value" [ $_loctmp -gt 0 ] && xappend "$value"
} }
append_parm() { append_parm() {
@ -37,66 +45,66 @@ append_parm() {
local _loctmp local _loctmp
config_get _loctmp "$section" "$option" config_get _loctmp "$section" "$option"
[ -z "$_loctmp" ] && return 0 [ -z "$_loctmp" ] && return 0
append args "$switch $_loctmp" xappend "$switch=$_loctmp"
} }
append_server() { append_server() {
append args "-S $1" xappend "--server=$1"
} }
append_interface() { append_interface() {
local ifname=$(uci_get_state network "$1" ifname "$1") local ifname=$(uci_get_state network "$1" ifname "$1")
append args "-i $ifname" xappend "--interface=$ifname"
} }
append_notinterface() { append_notinterface() {
local ifname=$(uci_get_state network "$1" ifname "$1") local ifname=$(uci_get_state network "$1" ifname "$1")
append args "-I $ifname" xappend "--except-interface=$ifname"
} }
append_addnhosts() { append_addnhosts() {
append args "-H $1" xappend "--addn-hosts=$1"
} }
append_bogusnxdomain() { append_bogusnxdomain() {
append args "-B $1" xappend "--bogus-nxdomain=$1"
} }
dnsmasq() { dnsmasq() {
local cfg="$1" local cfg="$1"
append_bool "$cfg" authoritative "-K" append_bool "$cfg" authoritative "--dhcp-authoritative"
append_bool "$cfg" nodaemon "-d" append_bool "$cfg" nodaemon "--no-daemon"
append_bool "$cfg" domainneeded "-D" append_bool "$cfg" domainneeded "--domain-needed"
append_bool "$cfg" filterwin2k "-f" append_bool "$cfg" filterwin2k "--filterwin2k"
append_bool "$cfg" nohosts "-h" append_bool "$cfg" nohosts "--no-hosts"
append_bool "$cfg" nonegcache "-N" append_bool "$cfg" nonegcache "--no-negcache"
append_bool "$cfg" strictorder "-o" append_bool "$cfg" strictorder "--strict-order"
append_bool "$cfg" logqueries "-q" append_bool "$cfg" logqueries "--log-queries"
append_bool "$cfg" noresolv "-R" append_bool "$cfg" noresolv "--no-resolv"
append_bool "$cfg" localise_queries "-y" append_bool "$cfg" localise_queries "--localise-queries"
append_bool "$cfg" readethers "-Z" append_bool "$cfg" readethers "--read-ethers"
append_bool "$cfg" dbus "-1" append_bool "$cfg" dbus "--enable-dbus"
append_bool "$cfg" boguspriv "-b" append_bool "$cfg" boguspriv "--bogus-priv"
append_bool "$cfg" expandhosts "-E" append_bool "$cfg" expandhosts "--expand-hosts"
append_bool "$cfg" enable_tftp "--enable-tftp" append_bool "$cfg" enable_tftp "--enable-tftp"
append_bool "$cfg" nonwildcard "-z" append_bool "$cfg" nonwildcard "--bind-interfaces"
append_parm "$cfg" dhcpscript "-6" append_parm "$cfg" dhcpscript "--dhcp-script"
append_parm "$cfg" cachesize "-c" append_parm "$cfg" cachesize "--cache-size"
append_parm "$cfg" dnsforwardmax "-0" append_parm "$cfg" dnsforwardmax "--dns-forward-max"
append_parm "$cfg" port "-p" append_parm "$cfg" port "--port"
append_parm "$cfg" ednspacket_max "-P" append_parm "$cfg" ednspacket_max "--edns-packet-max"
append_parm "$cfg" dhcpleasemax "-X" append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
append_parm "$cfg" "queryport" "-Q" append_parm "$cfg" "queryport" "--query-port"
append_parm "$cfg" "domain" "-s" append_parm "$cfg" "domain" "--domain"
append_parm "$cfg" "local" "-S" append_parm "$cfg" "local" "--server"
config_list_foreach "$cfg" "server" append_server config_list_foreach "$cfg" "server" append_server
config_list_foreach "$cfg" "interface" append_interface config_list_foreach "$cfg" "interface" append_interface
config_list_foreach "$cfg" "notinterface" append_notinterface config_list_foreach "$cfg" "notinterface" append_notinterface
config_list_foreach "$cfg" "addnhosts" append_addnhosts config_list_foreach "$cfg" "addnhosts" append_addnhosts
config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
append_parm "$cfg" "leasefile" "-l" append_parm "$cfg" "leasefile" "--dhcp-leasefile"
append_parm "$cfg" "resolvfile" "-r" append_parm "$cfg" "resolvfile" "--resolv-file"
append_parm "$cfg" "tftp_root" "--tftp-root" append_parm "$cfg" "tftp_root" "--tftp-root"
append_parm "$cfg" "dhcp_boot" "--dhcp-boot" append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
@ -110,7 +118,7 @@ dnsmasq() {
config_get_bool cachelocal "$cfg" cachelocal 1 config_get_bool cachelocal "$cfg" cachelocal 1
config_get hostsfile "$cfg" dhcphostsfile config_get hostsfile "$cfg" dhcphostsfile
[ -e "$hostsfile" ] && append args "--dhcp-hostsfile=$hostsfile" [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
local rebind local rebind
config_get_bool rebind "$cfg" rebind_protection 1 config_get_bool rebind "$cfg" rebind_protection 1
@ -118,22 +126,24 @@ dnsmasq() {
logger -t dnsmasq \ logger -t dnsmasq \
"DNS rebinding protection is active," \ "DNS rebinding protection is active," \
"will discard upstream RFC1918 responses!" "will discard upstream RFC1918 responses!"
append args "--stop-dns-rebind" xappend "--stop-dns-rebind"
local rebind_localhost local rebind_localhost
config_get_bool rebind_localhost "$cfg" rebind_localhost 0 config_get_bool rebind_localhost "$cfg" rebind_localhost 0
[ $rebind_localhost -gt 0 ] && { [ $rebind_localhost -gt 0 ] && {
logger -t dnsmasq "Allowing 127.0.0.0/8 responses" logger -t dnsmasq "Allowing 127.0.0.0/8 responses"
append args "--rebind-localhost-ok" xappend "--rebind-localhost-ok"
} }
append_rebind_domain() { append_rebind_domain() {
logger -t dnsmasq "Allowing RFC1918 responses for domain $1" logger -t dnsmasq "Allowing RFC1918 responses for domain $1"
append args "--rebind-domain-ok=$1" xappend "--rebind-domain-ok=$1"
} }
config_list_foreach "$cfg" rebind_domain append_rebind_domain config_list_foreach "$cfg" rebind_domain append_rebind_domain
} }
echo >> $CONFIGFILE
} }
dhcp_subscrid_add() { dhcp_subscrid_add() {
@ -145,7 +155,7 @@ dhcp_subscrid_add() {
config_get subscriberid "$cfg" subscriberid config_get subscriberid "$cfg" subscriberid
[ -n "$subscriberid" ] || return 0 [ -n "$subscriberid" ] || return 0
append args "--dhcp-subscrid=$networkid,$subscriberid" xappend "--dhcp-subscrid=$networkid,$subscriberid"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -159,7 +169,7 @@ dhcp_remoteid_add() {
config_get remoteid "$cfg" remoteid config_get remoteid "$cfg" remoteid
[ -n "$remoteid" ] || return 0 [ -n "$remoteid" ] || return 0
append args "--dhcp-remoteid=$networkid,$remoteid" xappend "--dhcp-remoteid=$networkid,$remoteid"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -173,7 +183,7 @@ dhcp_circuitid_add() {
config_get circuitid "$cfg" circuitid config_get circuitid "$cfg" circuitid
[ -n "$circuitid" ] || return 0 [ -n "$circuitid" ] || return 0
append args "--dhcp-circuitid=$networkid,$circuitid" xappend "--dhcp-circuitid=$networkid,$circuitid"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -187,7 +197,7 @@ dhcp_userclass_add() {
config_get userclass "$cfg" userclass config_get userclass "$cfg" userclass
[ -n "$userclass" ] || return 0 [ -n "$userclass" ] || return 0
append args "--dhcp-userclass=$networkid,$userclass" xappend "--dhcp-userclass=$networkid,$userclass"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -201,7 +211,7 @@ dhcp_vendorclass_add() {
config_get vendorclass "$cfg" vendorclass config_get vendorclass "$cfg" vendorclass
[ -n "$vendorclass" ] || return 0 [ -n "$vendorclass" ] || return 0
append args "--dhcp-vendorclass=$networkid,$vendorclass" xappend "--dhcp-vendorclass=$networkid,$vendorclass"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -221,7 +231,7 @@ dhcp_host_add() {
for m in $mac; do append macs "$m" ","; done for m in $mac; do append macs "$m" ","; done
[ -n "$macs" ] || return 0 [ -n "$macs" ] || return 0
append args "--dhcp-host=$macs${networkid:+,net:$networkid}${ip:+,$ip}${name:+,$name}" xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${ip:+,$ip}${name:+,$name}"
} }
dhcp_mac_add() { dhcp_mac_add() {
@ -233,7 +243,7 @@ dhcp_mac_add() {
config_get mac "$cfg" mac config_get mac "$cfg" mac
[ -n "$mac" ] || return 0 [ -n "$mac" ] || return 0
append args "--dhcp-mac=$networkid,$mac" xappend "--dhcp-mac=$networkid,$mac"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -252,7 +262,7 @@ dhcp_boot_add() {
config_get serveraddress "$cfg" serveraddress config_get serveraddress "$cfg" serveraddress
[ -n "$serveraddress" ] || return 0 [ -n "$serveraddress" ] || return 0
append args "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress" xappend "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -274,7 +284,7 @@ dhcp_add() {
DNS_SERVERS="$DNS_SERVERS $dnsserver" DNS_SERVERS="$DNS_SERVERS $dnsserver"
} }
append_bool "$cfg" ignore "-2 $ifname" && return 0 append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
config_get proto "$net" proto config_get proto "$net" proto
[ static = "$proto" ] || return 0 [ static = "$proto" ] || return 0
@ -306,7 +316,7 @@ dhcp_add() {
[ "$limit" -gt 0 ] && limit=$((limit-1)) [ "$limit" -gt 0 ] && limit=$((limit-1))
eval "$(ipcalc.sh $ipaddr $netmask $start $limit)" eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
if [ "$dynamicdhcp" = "0" ]; then END="static"; fi if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
append args "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}" xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
dhcp_option_add "$cfg" "$networkid" dhcp_option_add "$cfg" "$networkid"
} }
@ -317,7 +327,7 @@ dhcp_option_add() {
config_get dhcp_option "$cfg" dhcp_option config_get dhcp_option "$cfg" dhcp_option
for o in $dhcp_option; do for o in $dhcp_option; do
append args "-O $networkid","$o" xappend "--dhcp-option=$networkid","$o"
done done
} }
@ -341,10 +351,10 @@ dhcp_domain_add() {
[ "${fqdn%.*}" == "$fqdn" ] && \ [ "${fqdn%.*}" == "$fqdn" ] && \
fqdn="$fqdn${DOMAIN:+.$DOMAIN}" fqdn="$fqdn${DOMAIN:+.$DOMAIN}"
append args "-A /$fqdn/$ip" xappend "--address=/$fqdn/$ip"
[ -n "$raddr" ] && { [ -n "$raddr" ] && {
append args "--ptr-record=$raddr,$fqdn" xappend "--ptr-record=$raddr,$fqdn"
raddr="" raddr=""
} }
done done
@ -367,7 +377,7 @@ dhcp_srv_add() {
local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}" local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
append args "-W $service" xappend "--srv-host=$service"
} }
dhcp_mx_add() { dhcp_mx_add() {
@ -397,7 +407,7 @@ dhcp_cname_add() {
config_get target "$cfg" target config_get target "$cfg" target
[ -n "$target" ] || return 0 [ -n "$target" ] || return 0
append args "--cname=${cname},${target}" xappend "--cname=${cname},${target}"
} }
start() { start() {
@ -409,9 +419,20 @@ start() {
config_load dhcp config_load dhcp
# before we can call xappend
mkdir -p $(dirname $CONFIGFILE)
echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
# if we did this last, we could override auto-generated config
[ -f /etc/dnsmasq.conf ] && {
xappend "--conf-file=/etc/dnsmasq.conf"
}
args="" args=""
config_foreach dnsmasq dnsmasq config_foreach dnsmasq dnsmasq
config_foreach dhcp_host_add host config_foreach dhcp_host_add host
echo >> $CONFIGFILE
config_foreach dhcp_boot_add boot config_foreach dhcp_boot_add boot
config_foreach dhcp_mac_add mac config_foreach dhcp_mac_add mac
config_foreach dhcp_vendorclass_add vendorclass config_foreach dhcp_vendorclass_add vendorclass
@ -420,10 +441,14 @@ start() {
config_foreach dhcp_remoteid_add remoteid config_foreach dhcp_remoteid_add remoteid
config_foreach dhcp_subscrid_add subscrid config_foreach dhcp_subscrid_add subscrid
config_foreach dhcp_domain_add domain config_foreach dhcp_domain_add domain
echo >> $CONFIGFILE
config_foreach dhcp_srv_add srvhost config_foreach dhcp_srv_add srvhost
config_foreach dhcp_mx_add mxhost config_foreach dhcp_mx_add mxhost
echo >> $CONFIGFILE
config_foreach dhcp_add dhcp config_foreach dhcp_add dhcp
echo >> $CONFIGFILE
config_foreach dhcp_cname_add cname config_foreach dhcp_cname_add cname
echo >> $CONFIGFILE
# add own hostname # add own hostname
[ -z "$lanaddr" ] || { [ -z "$lanaddr" ] || {
@ -431,7 +456,7 @@ start() {
dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr" dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr"
} }
service_start /usr/sbin/dnsmasq $args && { service_start /usr/sbin/dnsmasq -C $CONFIGFILE && {
rm -f /tmp/resolv.conf rm -f /tmp/resolv.conf
[ -n "$DOMAIN" ] && echo "search $DOMAIN" >> /tmp/resolv.conf [ -n "$DOMAIN" ] && echo "search $DOMAIN" >> /tmp/resolv.conf
DNS_SERVERS="$DNS_SERVERS 127.0.0.1" DNS_SERVERS="$DNS_SERVERS 127.0.0.1"