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Diffstat (limited to 'net-scripts/net.modules.d/helpers.d/functions')
| -rw-r--r-- | net-scripts/net.modules.d/helpers.d/functions | 566 |
1 files changed, 0 insertions, 566 deletions
diff --git a/net-scripts/net.modules.d/helpers.d/functions b/net-scripts/net.modules.d/helpers.d/functions deleted file mode 100644 index 6975bf1..0000000 --- a/net-scripts/net.modules.d/helpers.d/functions +++ /dev/null @@ -1,566 +0,0 @@ -# Copyright (c) 2004-2006 Gentoo Foundation -# Distributed under the terms of the GNU General Public License v2 -# Contributed by Roy Marples (uberlord@gentoo.org) - -# We will be loaded after conf.d/rc and conf.d/net so we can set a default -# here. -RC_AUTO_INTERFACE="${RC_AUTO_INTERFACE:-no}" - -netdir="/var/lib/net-scripts" -statedir="${netdir}/state" - -# Contributed by Roy Marples (uberlord@gentoo.org) - -# char* interface_device(char *iface) -# -# Gets the base device of the interface -# Can handle eth0:1 and eth0.1 -# Which returns eth0 in this case -interface_device() { - local dev="${1%%.*}" - [[ ${dev} == "$1" ]] && dev="${1%%:*}" - echo "${dev}" -} - -# char* interface_type(char* iface) -# -# Returns the base type of the interface -# eth, ippp, etc -interface_type() { - echo "${1%%[0-9]*}" -} - -# void save_state(char *interface) -# -# Saves state information regarding the interface -save_state() { - local iface="$1" - local d="${statedir}/${iface}" - - [[ ! -d ${d} ]] && mkdir -m 0755 -p "${d}" - cp -p /etc/resolv.conf /etc/ntp.conf /etc/yp.conf "${d}" 2>/dev/null -} - -# void remove_state(char *interface) -# -# Removes state information regarding the interface -remove_state() { - local d="${statedir}/$1" - - [[ -d ${d} ]] && rm -Rf "${d}" 2>/dev/null - [[ ! ${2:-true} ]] && mkdir -m 0755 -p "${d}" -} - -# void apply_state(char *interface) -# -# Apply's state information about the interface to the system -# If the files in the state dir are not links back to etc then -# we create them if RC_AUTO_INTERFACE="yes" -# -apply_state() { - local iface="$1" - - if [[ -z ${iface} ]] ; then - iface="$(select_best_interface)" - [[ -z ${iface} ]] && return - fi - - local d="${statedir}/${iface}" - if [[ -d ${d} ]] ; then - local files="$(ls "${d}")" - if [[ -n ${files} ]] ; then - if [[ ${RC_AUTO_INTERFACE} == "yes" ]] ; then - cp -pPR "${d}"/* "${netdir}" - local file - for file in ${files} ; do - # Skip .sv files - [[ ${file} == *".sv" ]] && continue - local link="$(readlink "/etc/${file}" 2>/dev/null)" - if [[ ${link} != "${netdir}/${file}" ]] ; then - [[ -e "/etc/${file}" ]] && rm -f "/etc/${file}" - ln -snf "${netdir}/${file}" "/etc/${file}" - fi - done - else - cp -pPR "${d}"/* /etc - fi - fi - fi - - [[ ${RC_AUTO_INTERFACE} == "yes" ]] && merge_configs -} - -# char* order_interfaces(bool require_gateway) -# -# Lists the interfaces in route metric order that we have configured -# (ie a state dir exists) -# require_gateway defaults to false -order_interfaces() { - local ifaces extra - - ${1:-false} && extra=' && $2=="00000000"' - ifaces="$(awk '{if (NR>1 && $1!="lo"'"${extra}"') print $7, $1}' \ - /proc/net/route \ - | sort -n | cut -d' ' -f2 | uniq)" - - # Append lo if it's up - if ! ${1:-false} ; then - if grep -q "^lo[ \t]*" /proc/net/route ; then - ifaces="${ifaces} lo" - fi - fi - - local i order - for i in ${ifaces}; do - [[ -d "${statedir}/${i}" ]] && order="${order}${i} " - done - - echo "${order}" -} - -# void merge_resolv() -# -# Merges the resolv.conf info from active interfaces -merge_resolv() { - local -a ifaces=( $(order_interfaces) ) - local i j f - - # We only work for ifaces with a resolv.conf - j=${#ifaces[@]} - for (( i=0; i<j; i++ )); do - [[ ! -e "${statedir}/${ifaces[i]}/resolv.conf" ]] && unset ifaces[i] - done - ifaces=( "${ifaces[@]}" ) - - # No point merging unless there are two or more interfaces - [[ ${#ifaces[@]} -lt 2 ]] && return - - veinfo "Merging resolv.conf from interfaces ${ifaces[@]}" - - local -a search srvs opts sortlist - j=0 - for (( i=0; i<${#ifaces[@]}; i++ )); do - f="${statedir}/${ifaces[i]}/resolv.conf" - srvs[i]="$(sed -n -e 's/^[ \t]*nameserver[ \t]*\([^#]*\).*/\1/p' \ - "${f}" | sed 2q)" - - search[i]="$(sed -n -e 's/^[ \t]*\(domain\|search\)[ \t]*\([^#]*\).*/\2/p' \ - "${f}" | sed -e '$!d')" - - opts[i]="$(sed -n -e 's/^[ \t]*options[ \t]*\([^#]*\).*/\1#/p;' "${f}" \ - | xargs )" - sortlist[i]="$(sed -n -e 's/^[ \t]*sortlist[ \t]*\([^#]*\).*/\1/p' \ - "${f}")" - - if [[ -z ${srvs[i]} && -z ${opts[i]} && -z ${sortlist[i]} && -z ${search[i]} ]] ; then - unset srvs[i] - unset search[i] - unset opts[i] - unset sortlist[i] - continue - fi - - # No point in handling more than 3 interfaces due to libc limits - (( j++ )) - [[ ${j} -gt 2 ]] && break - done - srvs=( "${srvs[@]}" ) - search=( ${search[@]} ) - opts=( "${opts[@]}" ) - sortlist=( ${sortlist[@]} ) - - local new_srvs - j=0 - # Add interface primary nameservers - for (( i=0;i<${#srvs[@]}; i++ )); do - local -a n=( ${srvs[i]} ) - if [[ " ${new_srvs} " != *" ${n[0]} "* ]] ; then - new_srvs="${new_srvs} ${n[0]}" - # libc can only handle 3 name servers - (( j++ )) - [[ ${j} -gt 2 ]] && break - fi - done - - # Add interface secondary nameservers - if [[ ${j} -lt 3 ]] ; then - for (( i=0;i<${#srvs[@]}; i++ )); do - local -a n=( ${srvs[i]} ) - [[ -z ${n[1]} ]] && continue - if [[ " ${new_srvs} " != *" ${n[1]} "* ]] ; then - new_srvs="${new_srvs} ${n[1]}" - # libc can only handle 3 name servers - (( j++ )) - [[ ${j} -gt 2 ]] && break - fi - done - fi - - local new_search n_search=0 - for i in ${search[@]}; do - if [[ " ${new_search} " != *" ${i} "* ]] ; then - new_search="${new_search} ${i}" - # libc limits us to 6 search domains - (( n_search++ )) - [[ ${n_search} -gt 5 ]] && break - fi - done - - local new_opts - for i in "${opts[@]}"; do - new_opts="${new_opts}#${i}" - done - - # Remove duplicate options - new_opts="$( - echo -e "${new_opts//\#/\n}" \ - | sort -u | sed -e 's/^/#/g' | xargs \ - )" - - local new_sortlist n_sortlist=0 - for i in ${sortlist[@]}; do - if [[ " ${new_sortlist} " != *" ${i} "* ]] ; then - new_sortlist="${new_sortlist} ${i}" - # libc limits us to 10 items - (( n_sortlist++ )) - [[ ${n_sortlist} -gt 9 ]] && break - fi - done - - # Now we create a new resolv.conf to use - local f="${netdir}/resolv.conf.$$" - echo "# Generated by net-scripts from interfaces ${ifaces[@]}" > "${f}" - chmod 644 "${f}" - for i in ${new_srvs[@]}; do - echo "nameserver ${i}" >> "${f}" - done - if [[ -n ${new_search} ]] ; then - if [[ ${n_search} == "1" ]] ; then - echo "domain${new_search}" >> "${f}" - else - echo "search${new_search}" >> "${f}" - fi - fi - - [[ -n ${new_sortlist} ]] && echo "sortlist${new_sortlist}" >> "${f}" - - # We seperated the options out using # in our sed call above - # so we set IFS here. If you do any spliting futher down in this function - # then you will need to reset IFS. - local IFS="#" - for i in ${new_opts}; do - [[ -n ${i# } ]] && echo "options ${i# }" >> "${f}" - done - - mv "${f}" "${netdir}/resolv.conf" -} - - -# void merge_ntp() -# -# Merges the ntp.conf info from active interfaces -merge_ntp() { - local -a ifaces=( $(order_interfaces) ) - local i j f - - # We only work for ifaces with a ntp.conf - j=${#ifaces[@]} - for (( i=0; i<j; i++ )); do - [[ ! -e "${statedir}/${ifaces[i]}/ntp.conf" ]] && unset ifaces[i] - done - ifaces=( "${ifaces[@]}" ) - - # No point merging unless there are two or more interfaces - [[ ${#ifaces[@]} -lt 2 ]] && return - - veinfo "Merging ntp.conf from interfaces ${ifaces[@]}" - - local srvs - for (( i=0; i<${#ifaces[@]}; i++ )); do - f="${statedir}/${ifaces[i]}/ntp.conf" - srvs="${srvs} $( sed -n -e 's/^[ \t]*server[ \t]*\([^#]\)/\1/p' "${f}" )" - done - - # ntp does it's own preference list, so we just remove duplicates - sort_unique() { - set -- " ${@/%/\n}" - echo -e "$@" | sort -u - } - - srvs="$(sort_unique ${srvs})" - - f="${netdir}/ntp.conf.$$" - echo "# Generated by net-scripts for interfaces ${ifaces[@]}" > "${f}" - chmod 644 "${f}" - - echo "restrict default noquery notrust nomodify" >> "${f}" - echo "restrict 127.0.0.1" >> "${f}" - - for i in ${srvs}; do - echo "restrict ${i} nomodify notrap noquery" >> "${f}" - echo "server ${i}" >> "${f}" - done - - echo "driftfile /var/lib/ntp/ntp.drift" >> "${f}" - echo "logfile /var/log/ntp.log" >> "${f}" - - mv "${f}" "${netdir}/ntp.conf" -} - -# void merge_configs() -# -# Merge config files together -merge_configs() { - merge_resolv - merge_ntp -} - -# char* select_best_interface() -# -# Selects the best interface to apply state information to -# This is currently based on routing metrics -select_best_interface() { - local -a ifs=( $(order_interfaces) ) - - # Move lo to the back of the pecking order of it's active - local x=" ${ifs[@]} " - [[ ${x// lo / } != "${x}" ]] && ifs=( ${x// lo / } lo ) - - local iface - for iface in ${ifs[@]} ; do - if [[ -e "${statedir}/${iface}/resolv.conf" ]] ; then - echo "${iface}" - return 0 - fi - done - - echo "${ifs[0]}" -} - -# int calculate_metric(char *interface) -# -# Calculates the best metric for the interface -# The Linux kernel does not use this at the moment, but we use it so that -# default routes remain and we can work out the "best" interface -calculate_metric() { - local iface="$1" exclude='$1!="Iface" && $1!="lo"' - - # Have we already got a metric? - local m="$( awk '$1=="'${iface}'" && $2=="00000000" { print $7 }' \ - /proc/net/route )" - if [[ -n ${m} ]] ; then - echo "${m}" - return 0 - fi - - local itype="$(interface_type "${iface}")" x i - - # If we're not a wireless device then exclude wireless from the - # routing table so we stay < 1000 - if [[ -e /proc/net/wireless ]] ; then - if ! grep -q "^[ \t]*${iface}:[ \t]" /proc/net/wireless ; then - local i="$(sed -n -e 's/^[ \t]*\(.*\):.*/\1/p' /proc/net/wireless)" - for x in ${i} ; do - exclude="${exclude} && "'$1'"!=\"${x}\"" - done - fi - fi - - # Exclude ppp and ippp as well - local ix="ppp|ippp" - [[ ${itype} == "ppp" ]] && ix="ippp" - [[ ${itype} == "ippp" ]] && ix="ppp" - i="$( sed -n -e 's/^[ ]*\('"${ix}"'[0-9]*\):.*$/\1/p' /proc/net/dev )" - for x in ${i} ; do - exclude="${exclude} && "'$1'"!=\"${x}\"" - done - - local m="$( awk "${exclude} { print "'$7'" }" /proc/net/route \ - | sort -rn | head -n 1 | cut -d' ' -f2 )" - m="${m:--1}" - (( m ++ )) - - # If we're a wireless device then add 1000 so that wired interfaces take preference - if [[ -e /proc/net/wireless ]] ; then - grep -q "^[ \t]*${iface}:[ \t]" /proc/net/wireless && (( m+= 1000 )) - fi - - # If we're a ppp device then we add 2000 for ISDN, otherwise 3000 - [[ ${itype} == "ippp" ]] && (( m+= 2000 )) - [[ ${itype} == "ppp" ]] && (( m+= 3000 )) - - echo "${m}" -} - -# int netmask2cidr(char *netmask) -# -# Returns the CIDR of a given netmask -netmask2cidr() { - local binary="" i bin - - for i in ${1//./ }; do - bin="" - while [[ ${i} != "0" ]] ; do - bin=$[${i}%2]${bin} - (( i=i>>1 )) - done - binary="${binary}${bin}" - done - binary="${binary%%0*}" - echo "${#binary}" -} - -# char* netmask2cidr(int cidr) -# -# Returns the netmask of a given CIDR -cidr2netmask() { - local cidr="$1" netmask="" done=0 i sum=0 cur=128 - local octets frac - - (( octets=cidr/8 )) - (( frac=cidr%8 )) - while [[ octets -gt 0 ]] ; do - netmask="${netmask}.255" - (( octets-- )) - (( done++ )) - done - - if [[ ${done} -lt 4 ]] ; then - for (( i=0; i<${frac}; i++ )); do - (( sum+=cur )) - (( cur/=2 )) - done - netmask="${netmask}.${sum}" - (( done++ )) - - while [[ ${done} -lt 4 ]] ; do - netmask="${netmask}.0" - (( done++ )) - done - fi - - echo "${netmask:1}" -} - -# char* ip_network(char *ip, char *netmask) -# -# Returns the network of the ip address -# ip can be 192.168.0.51/24 -# or -# ip can be 192.168.0.51 and netmask is 255.255.255.0 -ip_network() { - local ip="$1" mask="$2" i network x - - # We only work for IPv4 addresses - [[ ${ip} != *.*.*.* ]] && return - - # If we didn't get parameter 2 then assume we have a CIDR - if [[ -z ${mask} ]] ; then - mask="${ip##*/}" - [[ -z ${mask} || ${mask} == ${ip} ]] && return 1 - mask="$(cidr2netmask "${mask}")" - ip="${ip%%/*}" - fi - - ip=( ${ip//./ } ) - mask=( ${mask//./ } ) - - for (( i=0; i<4; i++ )); do - (( x=ip[i] & mask[i] )) - network="${network}${x}" - [[ ${i} -lt 3 ]] && network="${network}." - done - - echo "${network}" -} - -# bool is_function(char* name) -# -# Returns 0 if the given name is a shell function, otherwise 1 -is_function() { - [[ -z $1 ]] && return 1 - [[ $(type -t "$1") == "function" ]] -} - -# void function_wrap(char* source, char* target) -# -# wraps function calls - for example function_wrap(this, that) -# maps function names this_* to that_* -function_wrap() { - local i - - is_function "${2}_depend" && return - - for i in $( typeset -f | grep -o '^'"${1}"'_[^ ]*' ); do - eval "${2}${i#${1}}() { ${i} \"\$@\"; }" - done -} - -# char[] * expand_parameters(char *cmd) -# -# Returns an array after expanding parameters. For example -# "192.168.{1..3}.{1..3}/24 brd +" -# will return -# "192.168.1.1/24 brd +" -# "192.168.1.2/24 brd +" -# "192.168.1.3/24 brd +" -# "192.168.2.1/24 brd +" -# "192.168.2.2/24 brd +" -# "192.168.2.3/24 brd +" -# "192.168.3.1/24 brd +" -# "192.168.3.2/24 brd +" -# "192.168.3.3/24 brd +" -expand_parameters() { - local x="$( eval echo ${@// /_} )" - local -a a=( ${x} ) - - a=( "${a[@]/#/\"}" ) - a=( "${a[@]/%/\"}" ) - echo "${a[*]//_/ }" -} - -# void configure_variables(char *interface, char *option1, [char *option2]) -# -# Maps configuration options from <variable>_<option> to <variable>_<iface> -# option2 takes precedence over option1 -configure_variables() { - local iface="$1" option1="$2" option2="$3" - - local mod func x i - local -a ivars ovars1 ovars2 - local ifvar="$(bash_variable "${iface}")" - - for mod in ${MODULES[@]}; do - is_function ${mod}_variables || continue - for v in $(${mod}_variables) ; do - x="" - [[ -n ${option2} ]] && x="${v}_${option2}[@]" - [[ -z ${!x} ]] && x="${v}_${option1}[@]" - [[ -n ${!x} ]] && eval "${v}_${ifvar}=( \"\${!x}\" )" - done - done - - return 0 -} - -# Provide a wrapper for hostname if it's not available -if [[ -z $(type -p hostname) ]] ; then - hostname() { - # Linux and *BSD seem to differ - local kernel="kern" ctl="hostname" - [[ $(uname) == "Linux" ]] && kernel="kernel" - - if [[ $1 == "-y" || $1 == "--yp" || $1 == "nis" ]] ; then - ctl="domainname" - shift - fi - - if [[ -n $1 ]] ; then - sysctl -q -w "${kernel}.${ctl}=$1" - else - sysctl -n "${kernel}.${ctl}" - fi - } -fi - -# vim: set ft=sh ts=4 : |