Jasan/normalize test

[jsarenik]

Add test for normalize.sh.
Describe normalize.sh in README.
Use normalize.sh in runspftools.sh uber script :-)

[jsarenik]

Interestingly enough, I can not reproduce the failure locally...

[jsarenik]

Here's the debug output from CircleCI (given input ip4:207.68.169.172/30):

ubuntu@box355:~/spf-tools$ sh -x ./normalize.sh
+ read ip
ip4:207.68.169.172/30
+ echo ip4:207.68.169.172/30
+ cut -d: -f2
+ cidr=207.68.169.172/30
+ echo ip4:207.68.169.172/30
+ cut -d: -f1
+ ipver=ip4
+ [ ip4 = ip4 ]
+ echo ip4:207.68.169.172/30
+ cut -d: -f2 -
+ cidr=207.68.169.172/30
+ echo ip4:207.68.169.172/30
+ cut -s -d/ -f2
+ nm=30
+ [ x30 = x32 ]
+ [ x30 = x ]
+ network 207.68.169.172/30
+ local ip netmask
+ echo+ IFS=/ 207.68.169.172/30
 read ip netmask
+ ip2int 207.68.169.172
+ local a b c d
+ + IFS=. read a b c d
echo 207.68.169.172
+ echo 3477383596
+ IFS=. read a b c d
+ local addr=3477383596
+ local mask=17179869180
+ int2ip 3477383596
+ local ui32=3477383596
+ shift
+ local ip n
+ ip=172.207.68.169.172
+ ui32=13583529
+ ip=169.172.207.68.169.172
+ ui32=53060
+ ip=68.169.172.207.68.169.172
+ ui32=207
+ ip=207.68.169.172.207.68.169.172
+ ui32=0
+ echo 207.68.169.172.207.68.169.172
+ echo 207.68.169.172.207.68.169.172/30
+ IFS=/ read ip netmask
+ echo ip4:207.68.169.172.207.68.169.172/30
ip4:207.68.169.172.207.68.169.172/30

[jsarenik]

@jcbf Please have a look at the changes I made to ./normalize.sh and let me know if I misunderstood something.

The only way to make tests (with Dash shell) work was to get rid of using ip variable name in different functions. Otherwise, in case you didn't notice, I have removed the cidr=32 default which was in the code. I'm not sure how it could cause troubles with IPv6, but that was something which needed to be fixed so I fixed it. Everything works at the moment, just want you to know about the changes I did to the code you provided. Thanks!