74 lines
2.2 KiB
Bash
Executable File
74 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
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# Released under the 2-clause BSD license.
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# Setup our resolv.conf
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# Vitally important that we use the domain entry in resolv.conf so we
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# can setup the nameservers are for the domain ONLY in resolvconf if
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# we're using a decent dns cache/forwarder like dnsmasq and NOT nscd/libc.
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# nscd/libc users will get the VPN nameservers before their other ones
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# and will use the first one that responds - maybe the LAN ones?
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# non resolvconf users just the the VPN resolv.conf
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# FIXME:- if we have >1 domain, then we have to use search :/
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# We need to add a flag to resolvconf to say
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# "these nameservers should only be used for the listed search domains
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# if other global nameservers are present on other interfaces"
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# This however, will break compatibility with Debians resolvconf
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# A possible workaround would be to just list multiple domain lines
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# and try and let resolvconf handle it
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NS=
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DOMAIN=
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SEARCH=
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i=1
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while true; do
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eval opt=\$foreign_option_${i}
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[ -z "${opt}" ] && break
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if [ "${opt}" != "${opt#dhcp-option DOMAIN *}" ]; then
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if [ -z "${DOMAIN}" ]; then
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DOMAIN="${opt#dhcp-option DOMAIN *}"
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else
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SEARCH="${SEARCH:+ }${opt#dhcp-option DOMAIN *}"
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fi
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elif [ "${opt}" != "${opt#dhcp-option DNS *}" ]; then
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NS="${NS}nameserver ${opt#dhcp-option DNS *}\n"
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fi
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: $(( i += 1 ))
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done
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if [ -n "${NS}" ]; then
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DNS="# Generated by openvpn for interface ${dev}\n"
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if [ -n "${SEARCH}" ]; then
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DNS="${DNS}search ${DOMAIN} ${SEARCH}\n"
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else
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DNS="${DNS}domain ${DOMAIN}\n"
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fi
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DNS="${DNS}${NS}"
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if type resolvconf >/dev/null 2>&1; then
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printf "${DNS}" | resolvconf -a "${dev}"
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else
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# Preserve the existing resolv.conf
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if [ -e /etc/resolv.conf ]; then
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cp -p /etc/resolv.conf /etc/resolv.conf-"${dev}".sv
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fi
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(umask 022; printf "${DNS}" > /etc/resolv.conf)
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fi
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fi
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# Below section is OpenRC specific
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# If we have a service specific script, run this now
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[ -x "${RC_SVCNAME}"-up.sh ] && "${RC_SVCNAME}"-up.sh
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# Re-enter the init script to start any dependant services
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if [ -x "${RC_SERVICE}" ]; then
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if ! "${RC_SERVICE}" --quiet status; then
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IN_BACKGROUND=YES
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export IN_BACKGROUND
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"${RC_SERVICE}" --quiet start
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fi
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fi
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exit 0
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