diff options
Diffstat (limited to 'lib/common-functions.sh')
| -rw-r--r-- | lib/common-functions.sh | 320 |
1 files changed, 2 insertions, 318 deletions
diff --git a/lib/common-functions.sh b/lib/common-functions.sh index 32ee6bcc..e7041ac4 100644 --- a/lib/common-functions.sh +++ b/lib/common-functions.sh @@ -2,9 +2,6 @@ # Common Functions used by OPNFV Apex # author: Tim Rozet (trozet@redhat.com) -#python ip_gen command -ip_gen="python3.4 -B -m apex.ip_utils generate_ip_range" - ##converts subnet mask to prefix ##params: subnet mask function prefix2mask { @@ -17,324 +14,11 @@ function prefix2mask { ##find ip of interface ##params: interface name function find_ip { - ip addr show $1 | grep -Eo '^\s+inet\s+[\.0-9]+' | awk '{print $2}' -} - -##finds subnet of ip and netmask -##params: ip, netmask -function find_subnet { - IFS=. read -r i1 i2 i3 i4 <<< "$1" - IFS=. read -r m1 m2 m3 m4 <<< "$2" - printf "%d.%d.%d.%d\n" "$((i1 & m1))" "$((i2 & m2))" "$((i3 & m3))" "$((i4 & m4))" -} - -##verify subnet has at least n IPs -##params: subnet mask, n IPs -function verify_subnet_size { - IFS=. read -r i1 i2 i3 i4 <<< "$1" - num_ips_required=$2 - - ##this function assumes you would never need more than 254 - ##we check here to make sure - if [ "$num_ips_required" -ge 254 ]; then - echo -e "\n\n${red}ERROR: allocating more than 254 IPs is unsupported...Exiting${reset}\n\n" - return 1 - fi - - ##we just return if 3rd octet is not 255 - ##because we know the subnet is big enough - if [ "$i3" -ne 255 ]; then - return 0 - elif [ $((254-$i4)) -ge "$num_ips_required" ]; then - return 0 - else - echo -e "\n\n${red}ERROR: Subnet is too small${reset}\n\n" - return 1 - fi -} - -##finds last usable ip (broadcast minus 1) of a subnet from an IP and netmask -## Warning: This function only works for IPv4 at the moment. -##params: ip, netmask -function find_last_ip_subnet { - IFS=. read -r i1 i2 i3 i4 <<< "$1" - IFS=. read -r m1 m2 m3 m4 <<< "$2" - IFS=. read -r s1 s2 s3 s4 <<< "$((i1 & m1)).$((i2 & m2)).$((i3 & m3)).$((i4 & m4))" - printf "%d.%d.%d.%d\n" "$((255 - $m1 + $s1))" "$((255 - $m2 + $s2))" "$((255 - $m3 + $s3))" "$((255 - $m4 + $s4 - 1))" -} - -##increments subnet by a value -##params: ip, value -##assumes low value -function increment_subnet { - IFS=. read -r i1 i2 i3 i4 <<< "$1" - printf "%d.%d.%d.%d\n" "$i1" "$i2" "$i3" "$((i4 | $2))" -} - -##finds netmask of interface -##params: interface -##returns long format 255.255.x.x -function find_netmask { - ifconfig $1 | grep -Eo 'netmask\s+[\.0-9]+' | awk '{print $2}' -} - -##finds short netmask of interface -##params: interface -##returns short format, ex: /21 -function find_short_netmask { - echo "/$(ip addr show $1 | grep -Eo '^\s+inet\s+[\/\.0-9]+' | awk '{print $2}' | cut -d / -f2)" -} - -##increments next IP -##params: ip -##assumes a /24 subnet -function next_ip { - baseaddr="$(echo $1 | cut -d. -f1-3)" - lsv="$(echo $1 | cut -d. -f4)" - if [ "$lsv" -ge 254 ]; then - return 1 - fi - ((lsv++)) - echo $baseaddr.$lsv -} - -##subtracts a value from an IP address -##params: last ip, ip_count -##assumes ip_count is less than the last octect of the address -subtract_ip() { - IFS=. read -r i1 i2 i3 i4 <<< "$1" - ip_count=$2 - if [ $i4 -lt $ip_count ]; then - echo -e "\n\n${red}ERROR: Can't subtract $ip_count from IP address $1 Exiting${reset}\n\n" - exit 1 - fi - printf "%d.%d.%d.%d\n" "$i1" "$i2" "$i3" "$((i4 - $ip_count ))" -} - -##check if IP is in use -##params: ip -##ping ip to get arp entry, then check arp -function is_ip_used { - ping -c 5 $1 > /dev/null 2>&1 - arp -n | grep "$1 " | grep -iv incomplete > /dev/null 2>&1 -} - -##find next usable IP -##params: ip -function next_usable_ip { - new_ip=$(next_ip $1) - while [ "$new_ip" ]; do - if ! is_ip_used $new_ip; then - echo $new_ip - return 0 - fi - new_ip=$(next_ip $new_ip) - done - return 1 -} - -##increment ip by value -##params: ip, amount to increment by -##increment_ip $next_private_ip 10 -function increment_ip { - baseaddr="$(echo $1 | cut -d. -f1-3)" - lsv="$(echo $1 | cut -d. -f4)" - incrval=$2 - lsv=$((lsv+incrval)) - if [ "$lsv" -ge 254 ]; then - return 1 - fi - echo $baseaddr.$lsv -} - -##finds gateway on system -##params: interface to validate gateway on (optional) -##find_gateway em1 -function find_gateway { - local gw gw_interface - if [ -z "$1" ]; then - return 1 - fi - gw=$(ip route | grep default | awk '{print $3}') - gw_interface=$(ip route get $gw | awk '{print $3}') - if [ -n "$1" ]; then - if [ "$gw_interface" == "$1" ]; then - echo ${gw} - fi - fi -} - -##finds subnet in CIDR notation for interface -##params: interface to find CIDR -function find_cidr { - local cidr network ip netmask short_mask - if [ -z "$1" ]; then - return 1 - fi - ip=$(find_ip $1) - netmask=$(find_netmask $1) - if [[ -z "$ip" || -z "$netmask" ]]; then - return 1 - fi - network=$(find_subnet ${ip} ${netamsk}) - short_mask=$(find_short_netmask $1) - if [[ -z "$network" || -z "$short_mask" ]]; then - return 1 - fi - cidr="${subnet}'\'${short_mask}" - echo ${cidr} -} - -##finds block of usable IP addresses for an interface -##simply returns at the moment the correct format -##after first 20 IPs, and leave 20 IPs at end of subnet (for floating ips, etc) -##params: interface to find IP -function find_usable_ip_range { - local interface_ip subnet_mask first_block_ip last_block_ip - if [ -z "$1" ]; then - return 1 - fi - interface_ip=$(find_ip $1) - subnet_mask=$(find_netmask $1) - if [[ -z "$interface_ip" || -z "$subnet_mask" ]]; then - return 1 - fi - interface_ip=$(increment_ip ${interface_ip} 20) - first_block_ip=$(next_usable_ip ${interface_ip}) - if [ -z "$first_block_ip" ]; then - return 1 - fi - last_block_ip=$(find_last_ip_subnet ${interface_ip} ${subnet_mask}) - if [ -z "$last_block_ip" ]; then - return 1 - else - last_block_ip=$(subtract_ip ${last_block_ip} 21) - echo "${first_block_ip},${last_block_ip}" - fi - -} - -##generates usable IP range in correct format based on CIDR -##A block of 20 IP addresses are reserved at beginning of address space. -##A block of 22 IP addresses are reserved at end of address space, this includes -##the broadcast IP address. -##In a /24 IPv4 CIDR, this results in .1-20 as as .234-255 being excluded. -##params: cidr -function generate_usable_ip_range { - if [ -z "$1" ]; then - return 1 - fi - echo $($ip_gen $1 21 -23) -} - - -##find the undercloud IP address -##finds first usable IP on subnet -##params: interface -function find_provisioner_ip { - local interface_ip - if [ -z "$1" ]; then - return 1 - fi - interface_ip=$(find_ip $1) - if [ -z "$interface_ip" ]; then - return 1 - fi - echo $(increment_ip ${interface_ip} 1) -} - -##generates undercloud IP address based on CIDR -##params: cidr -function generate_provisioner_ip { - if [ -z "$1" ]; then - return 1 - fi - echo $($ip_gen $1 1 1) -} - - -##finds the dhcp range available via interface -##uses first 8 IPs, after 2nd IP -##params: interface -function find_dhcp_range { - local dhcp_range_start dhcp_range_end interface_ip - if [ -z "$1" ]; then - return 1 - fi - interface_ip=$(find_ip $1) - if [ -z "$interface_ip" ]; then - return 1 - fi - dhcp_range_start=$(increment_ip ${interface_ip} 2) - dhcp_range_end=$(increment_ip ${dhcp_range_start} 8) - echo "${dhcp_range_start},${dhcp_range_end}" -} - -##generates the dhcp range available via CIDR -##uses first 8 IPs, after 1st IP -##params: cidr -function generate_dhcp_range { - if [ -z "$1" ]; then - return 1 - fi - echo $($ip_gen $1 2 10) -} - -##finds the introspection range available via interface -##uses 8 IPs, after the first 10 IPs -##params: interface -function find_introspection_range { - local inspect_range_start inspect_range_end interface_ip - if [ -z "$1" ]; then - return 1 - fi - interface_ip=$(find_ip $1) - if [ -z "$interface_ip" ]; then - return 1 - fi - inspect_range_start=$(increment_ip ${interface_ip} 10) - inspect_range_end=$(increment_ip ${inspect_range_start} 8) - echo "${inspect_range_start},${inspect_range_end}" -} - -##generate the introspection range available via CIDR -##uses 8 IPs, after the first 10 IPs -##params: cidr -function generate_introspection_range { - if [ -z "$1" ]; then - return 1 - fi - echo $($ip_gen $1 11 19) -} - -##finds the floating ip range available via interface -##uses last 20 IPs of a subnet, minus last IP -##params: interface -function find_floating_ip_range { - local float_range_start float_range_end interface_ip subnet_mask - if [ -z "$1" ]; then - return 1 - fi - interface_ip=$(find_ip $1) - subnet_mask=$(find_netmask $1) - if [[ -z "$interface_ip" || -z "$subnet_mask" ]]; then + if [[ -z "$1" ]]; then return 1 fi - float_range_end=$(find_last_ip_subnet ${interface_ip} ${subnet_mask}) - float_range_end=$(subtract_ip ${float_range_end} 1) - float_range_start=$(subtract_ip ${float_range_end} 19) - echo "${float_range_start},${float_range_end}" -} -##generate the floating range available via CIDR -##uses last 20 IPs of subnet, minus last 2 IPs. -##In a /24 IPv4 CIDR, this would result in floating ip range of .234-253 -##params: cidr -function generate_floating_ip_range { - if [ -z "$1" ]; then - return 1 - fi - echo $($ip_gen $1 -22 -3) + python3.4 -B $CONFIG/lib/python/apex-python-utils.py find_ip -i $1 } ##attach interface to OVS and set the network config correctly |