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iup: add dhcp_option_relay refs #14666
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Ionuț-Alex Oprea
parent
04e772ce31
commit
2e769a153c
2 changed files with 224 additions and 0 deletions
219
iup/files/lib/functions/dhcp_option_relay.sh
Executable file
219
iup/files/lib/functions/dhcp_option_relay.sh
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#!/bin/sh
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# functions that take dhcp options received on the wan interface
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# and relay/repeat them for specific clients
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#config dhcp_option_relay
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# option enable 1
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# list dhcp_option 43
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# list from_interface wan
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# option vendorclass '*SDX*'
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# where:
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# dhcp_option_relay is the name of the section parsed by this script
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# enable/enabled - option, enable the uci section [default on]
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# dhcp_option/dhcp_options - list of dhcp options (0-255) to be relayed/repeated
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# overwrite - if same dhcp_option already exists in /etc/config/dhcp, overwrite it with this option [default off]
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# from_interface - list of interfaces (e.g. wan) to get the dhcp options from
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. /lib/functions.sh
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interface=""
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opt224=""
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opt225=""
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opt226=""
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opt43=""
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opt128=""
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opt66=""
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opt67=""
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opt132=""
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opt133=""
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newsectionid="0"
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function parse_the_json()
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{
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local the_json="$@"
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json_load "$the_json"
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json_get_var interface interface
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json_get_var opt224 privopt224
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json_get_var opt225 privopt225
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json_get_var opt226 privopt226
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json_get_var opt43 vendorspecinf # option 43
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json_get_var opt128 httpurl128
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json_get_var opt66 tftp # option 66
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json_get_var opt67 bootfile #option 67
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json_get_var opt132 vlanid # option 132
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json_get_var opt133 vlanpriority # option 133
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}
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function add_section_dhcp_vendorclass()
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{
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local dhcp_option=$1
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local dhcp_option_value=$2
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local vendorclass=$3
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local new=
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newsectionid=$((newsectionid+1))
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#echo "add_section_dchp_vendorclass $dhcp_option ${dhcp_option_value} $vendorclass"
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new=$(uci add dhcp vendorclass)
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uci set dhcp.$new.vendorclass="$vendorclass"
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uci set dhcp.$new.networkid="dhcp_option_relay_$newsectionid"
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uci add_list dhcp.$new.dhcp_option=$dhcp_option,\"${dhcp_option_value}\"
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uci commit dhcp
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}
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function dhcp_option_relay()
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{
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local section="$1"
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local enable="" enabled=""
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local dhcp_option="" dhcp_option_value=""
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local vendorclass=""
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#local overwrite=""
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local from_interface
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#echo "section: $section"
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# parse only enabled sections
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config_get_bool enabled $section enabled 1
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config_get_bool enable $section enable 1
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#echo "enabled: $enabled"
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#echo "enable : $enable"
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if [ "$enable" == "0" -o "$enabled" == "0" ] ; then
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#echo "section $section is not enabled"
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return
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fi
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# todo: for disabled sections: run only the removal of the dhcp options
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# option overwrite 1
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#config_get_bool overwrite $section overwrite 0
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config_get vendorclass $section vendorclass
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if [ ${#vendorclass} -le 1 ]; then
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#echo "vendorclass must not be empty"
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return
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fi
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# list to_interface lan
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# to_interface - list of interfaces (e.g. lan, guest) to advertise the dhcp options to
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#foreach_to_interface() {
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# local to_interface=$1
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# echo ""
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# echo " from_interface $from_interface"
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# echo " dhcp_option $dhcp_option"
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# echo " dhcp_option_value $dhcp_option_value"
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# echo " overwrite $overwrite"
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# echo " to_interface $to_interface"
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#
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# if [ ! $(uci -q get dhcp.$to_interface) ] ; then
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# echo "to_interface $to_interface does not exist in dhcp uci config"
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# return
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# fi
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#
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#}
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foreach_dhcp_option() {
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dhcp_option=$1
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echo "dhcp_option: $dhcp_option"
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case $dhcp_option in
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43) dhcp_option_value=$opt43 ;;
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66) dhcp_option_value=$opt66 ;;
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67) dhcp_option_value=$opt67 ;;
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128) dhcp_option_value=$opt128 ;;
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132) dhcp_option_value=$opt132 ;;
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133) dhcp_option_value=$opt133 ;;
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224) dhcp_option_value=$opt224 ;;
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225) dhcp_option_value=$opt225 ;;
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226) dhcp_option_value=$opt226 ;;
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*) dhcp_option_value="unsupported" ;;
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esac
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if [ "${dhcp_option_value}" == "unsupported" ] ; then
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echo "dhcp_option $dhcp_option is unsupported"
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return
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fi
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if [ "${dhcp_option_value}" == "" ] ; then
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echo "dhcp_option $dhcp_option is empty"
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return
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fi
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#echo "dhcp_option: $dhcp_option dhcp_option_value: ${dhcp_option_value}"
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#config_list_foreach $section to_interface foreach_to_interface
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add_section_dhcp_vendorclass $dhcp_option ${dhcp_option_value} $vendorclass
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}
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foreach_from_interface() {
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from_interface="$1"
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#echo "from_interface: $from_interface"
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if [ "$from_interface" != "$interface" ]; then
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return
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fi
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dhcp_option=""
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config_list_foreach $section dhcp_option foreach_dhcp_option
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#config_list_foreach $section dhcp_options foreach_dhcp_option
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}
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from_interface=""
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config_list_foreach $section from_interface foreach_from_interface
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}
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# in uci dhcp config:
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# remove all the vendorclass sections
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# that have previosly been configured by this script.
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# all are identified by "option networkid dhcp_option_relay_*"
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function dhcp_option_relay_clear_prev()
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{
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local to_remove=""
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foreach_vendorclass() {
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local section="$1"
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local networkid
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config_get networkid $section networkid
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case "$networkid"
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in dhcp_option_relay*)
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to_remove="$to_remove $section"
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;;
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esac
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}
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config_load dhcp
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config_foreach foreach_vendorclass vendorclass
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local sect
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for sect in $to_remove ; do
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uci_remove dhcp $sect
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done
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uci_commit dhcp
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}
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# the main function
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function dhcp_option_relay_parse()
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{
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local the_json="$@"
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parse_the_json "$the_json"
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dhcp_option_relay_clear_prev
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newsectionid="0"
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config_load provisioning
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config_foreach dhcp_option_relay dhcp_option_relay
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#config_foreach dhcp_option_relay dhcp_options_relay
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#config_foreach dhcp_option_relay dhcpoption_relay
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#config_foreach dhcp_option_relay dhcpoptions_relay
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#config_foreach dhcp_option_relay dhcp_optionrelay
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#config_foreach dhcp_option_relay dhcp_optionsrelay
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#config_foreach dhcp_option_relay dhcpoptionrelay
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#config_foreach dhcp_option_relay dhcpoptionsrelay
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}
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#dhcp_option_relay_parse
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@ -5,6 +5,7 @@ echo $$ > /var/run/iup.pid
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. /lib/functions.sh
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. /lib/functions/network.sh
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. /lib/functions/savecfg.sh
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. /lib/functions/dhcp_option_relay.sh
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. /usr/share/libubox/jshn.sh
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include /lib/upgrade
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@ -383,6 +384,10 @@ handle_option224()
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parse_dhcp_options()
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{
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local the_json="$@"
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# process the dhcp_option_relay sections
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dhcp_option_relay_parse "$the_json" >/dev/console
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# Process IUP related DHCP options #
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local privopt224 privopt225 privopt226 vendorspecinf httpurl128
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local tftp bootfile vlanid vlanpriority interface
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