在用awk处理文本时,有些场景需要将简化的IPV6地址补充成完整的IPV6地址,下边函数可简单实现:
- IPV6地址补全函数
# ipv6地址补全函数
function compipv6(orig_address){
# 分割IPV6地址
split(orig_address, ipv6_addr, "/")
n = split(ipv6_addr[1], ip_field, ":")
full_addr=""
# 切割简化的地址
split(ipv6_addr[1], ip_field, ":")
# 每个字段不足4位则高位补0
for ( i=1; i<=n; i++){
if ( length(ip_field[i]) == 0 ){
ip_field[i] = "0000"
}
else if ( length(ip_field[i]) == 1 ){
ip_field[i] = "000"ip_field[i]
}
else if ( length(ip_field[i]) == 2 ){
ip_field[i] = "00"ip_field[i]
}
else if ( length(ip_field[i]) == 3 ){
ip_field[i] = "0"ip_field[i]
}
# 组合临时简化的IPV6地址
if ( i==1 ){
full_addr = ip_field[i]
}else{
full_addr = full_addr":"ip_field[i]
}
}
# 循环补全32位
do{
FS = ":"
$0 = full_addr
if( $(NF-1) == "0000" && $NF == "0000" ){
n1 = 8-NF
for ( i=1; i<=n1; i++ ){
full_addr=full_addr":0000"
}
}
else if( $NF != "0000" ){
n1 = 8-NF
for ( i=1; i<=n1; i++ ){
full_addr=gensub(/0000/,"0000:0000",1,full_addr)
}
}
FS=" "
}while(0)
# 判断原始数据是否有掩码位,有则需要返回掩码位
if (orig_address !~ ///){
return full_addr
}
else{
return full_addr"/"ipv6_addr[2]
}
}
- 需要解析适配的源数据
vrf ChinaMobile_SGi
rd 24059:4600
address-family ipv6 unicast
network 2409:8005:800::/127
network 2409:8005:800::8/127
network 2409:8005:800::10/127
network 2409:8005:800::1c/127
network 2409:8005:800::24/127
network 2409:8015:800::/120
network 2409:8015:800::100/120
network 2409:8015:800:1::/64
network 2409:8015:800:2::/64
network 2409:8015:870::/44
network 2409:8015:880::/43
network 2409:8127:f200::/44
network 2409:8127:f210::/44
network 2409:8127:f220::/44
network 2409:8127:f240::/44
network 2409:8805:800::/43
network 2409:8805:820::/43
network 2409:8805:840::/44
network 2409:8805:850::/44
network 2409:8805:860::/43
network 2409:8805:8a0::/43
network 2409:8805:8c0::/43
!
!
- awk完整程序
#!/bin/awk -f
# author: wholj
# date: 2018-12-21
# ipv6地址补全函数
function compipv6(orig_address){
# 分割IPV6地址
split(orig_address, ipv6_addr, "/")
n = split(ipv6_addr[1], ip_field, ":")
full_addr=""
# 切割简化的地址
split(ipv6_addr[1], ip_field, ":")
# 每个字段不足4位则高位补0
for ( i=1; i<=n; i++){
if ( length(ip_field[i]) == 0 ){
ip_field[i] = "0000"
}
else if ( length(ip_field[i]) == 1 ){
ip_field[i] = "000"ip_field[i]
}
else if ( length(ip_field[i]) == 2 ){
ip_field[i] = "00"ip_field[i]
}
else if ( length(ip_field[i]) == 3 ){
ip_field[i] = "0"ip_field[i]
}
# 组合临时简化的IPV6地址
if ( i==1 ){
full_addr = ip_field[i]
}else{
full_addr = full_addr":"ip_field[i]
}
}
# 循环补全32位
do{
FS = ":"
$0 = full_addr
if( $(NF-1) == "0000" && $NF == "0000" ){
n1 = 8-NF
for ( i=1; i<=n1; i++ ){
full_addr=full_addr":0000"
}
}
else if( $NF != "0000" ){
n1 = 8-NF
for ( i=1; i<=n1; i++ ){
full_addr=gensub(/0000/,"0000:0000",1,full_addr)
}
}
FS=" "
}while(0)
return full_addr"/"ipv6_addr[2]
}
# awk开始处理传入的文本文件
{
# 将文件中的
换行替换为
gsub("
","
",$0)
if( NF==2 && $1~/network/ ){
# 调用补全函数将IPV6地址补全
print $2" --> "compipv6($2)
}
}
- 解析适配结果
2409:8005:800::/127 --> 2409:8005:0800:0000:0000:0000:0000:0000/127
2409:8005:800::8/127 --> 2409:8005:0800:0000:0000:0000:0000:0008/127
2409:8005:800::10/127 --> 2409:8005:0800:0000:0000:0000:0000:0010/127
2409:8005:800::1c/127 --> 2409:8005:0800:0000:0000:0000:0000:001c/127
2409:8005:800::24/127 --> 2409:8005:0800:0000:0000:0000:0000:0024/127
2409:8015:800::/120 --> 2409:8015:0800:0000:0000:0000:0000:0000/120
2409:8015:800::100/120 --> 2409:8015:0800:0000:0000:0000:0000:0100/120
2409:8015:800:1::/64 --> 2409:8015:0800:0001:0000:0000:0000:0000/64
2409:8015:800:2::/64 --> 2409:8015:0800:0002:0000:0000:0000:0000/64
2409:8015:870::/44 --> 2409:8015:0870:0000:0000:0000:0000:0000/44
2409:8015:880::/43 --> 2409:8015:0880:0000:0000:0000:0000:0000/43
2409:8127:f200::/44 --> 2409:8127:f200:0000:0000:0000:0000:0000/44
2409:8127:f210::/44 --> 2409:8127:f210:0000:0000:0000:0000:0000/44
2409:8127:f220::/44 --> 2409:8127:f220:0000:0000:0000:0000:0000/44
2409:8127:f240::/44 --> 2409:8127:f240:0000:0000:0000:0000:0000/44
2409:8805:800::/43 --> 2409:8805:0800:0000:0000:0000:0000:0000/43
2409:8805:820::/43 --> 2409:8805:0820:0000:0000:0000:0000:0000/43
2409:8805:840::/44 --> 2409:8805:0840:0000:0000:0000:0000:0000/44
2409:8805:850::/44 --> 2409:8805:0850:0000:0000:0000:0000:0000/44
2409:8805:860::/43 --> 2409:8805:0860:0000:0000:0000:0000:0000/43
2409:8805:8a0::/43 --> 2409:8805:08a0:0000:0000:0000:0000:0000/43
2409:8805:8c0::/43 --> 2409:8805:08c0:0000:0000:0000:0000:0000/43