convert output to list(and nested dictionary)

Pablo Lucena plucena24 at gmail.com
Wed Jul 22 03:03:14 CEST 2015


​str.split and re are a nice quick way to do it:

>>> def get_data(data):
import re
port_re = re.compile(r'(\w+)\((\S+-\S+)\)')
cidr_re = re.compile(r'\[(.*?)\]')
_, proto_port, cidr = data.rsplit(":", 2)
port_match = port_re.search(proto_port)
proto, port = port_match.group(1), port_match.group(2)
port = port.split("-")[0]
cidr_match = cidr_re.search(cidr)
cidr = cidr_match.group(1)
return dict(port=port, proto=proto, cidr=cidr)

>>> get_data("SecurityGroup:default sg-e1304484 inbound:
IPPermissions:tcp(80-80)  source: [67.184.225.222/32]")
{'cidr': '67.184.225.222/32', 'proto': 'tcp', 'port': '80'}
>>> get_data("SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
IPPermissions:-1(None-None)  source: [sg-e632d982-995635159130]")
{'cidr': 'sg-e632d982-995635159130', 'proto': '1', 'port': 'None'}


​You can alter this and add whatever extra checks you need as Chris A
mentioned (when proto is -1 and port is None-None, or the icmp case). This
is just a very crude example, but hopefully you get the drift.

Most text parsing problems can easily be solved with these simple tools.
Fire up your shell and test it - this is really the best way to learn how
to do something like this.


On Tue, Jul 21, 2015 at 5:12 PM, max scalf <oracle.blog3 at gmail.com> wrote:

> Hello all,
>
> For Each SecurityGroup, how can i convert that into a List that in turn
> will have a dictionary of the cidr block, protocol type and the port...so
> from output below, the SecurityGroup called "default" had 2
> rules...allowing TCP port from 80 and 5500 to the source IP and then
> SecurityGroup called "Pub_HDP_SG" had only one rule...so on and so
> forth....here is the output that i am trying to get out in the form of a
> list....
>
> what I am planning to do is, take the list(and nested dictionary) and pass
> that to a function that will in turn spitout a cloudformation template
> using troposphere (something like "
> http://imil.net/wp/2015/06/04/rock-your-cloudformation-with-troposphere-and-boto/
> ")
>
>
> For Better Readablity (http://pastebin.com/rT6Aswwz)
>
> import boto.ec2
>
> sgs = boto.ec2.connect_to_region('us-east-1').get_all_security_groups()
>
> for sg in sgs:
>
>     for rule in sg.rules:
>
>         print sg, sg.id, "inbound:", rule, " source:", rule.grants
>
>
> SecurityGroup:default sg-e1304484 inbound: IPPermissions:tcp(80-80)
>  source: [67.184.225.222/32]
>
> SecurityGroup:default sg-e1304484 inbound: IPPermissions:tcp(5500-5500)
>  source: [67.184.225.222/32]
>
> SecurityGroup:Pub_HDP_SG sg-e632d982 inbound: IPPermissions:tcp(80-80)
>  source: [0.0.0.0/0]
>
> SecurityGroup:sg3-MySecurityGroup-LB0QF9UQAOEF sg-4fe73728 inbound:
> IPPermissions:tcp(22-22)  source: [0.0.0.0/0]
>
> SecurityGroup:sg3-MySecurityGroup-LB0QF9UQAOEF sg-4fe73728 inbound:
> IPPermissions:tcp(80-80)  source: [0.0.0.0/0]
>
> SecurityGroup:RDP Rule - open everyone  sg-42d58d27 inbound:
> IPPermissions:-1(None-None)  source: [0.0.0.0/0]
>
> SecurityGroup:us-east-open-all sg-97ffa7f2 inbound:
> IPPermissions:tcp(22-22)  source: [10.0.20.100/32]
>
> SecurityGroup:us-east-open-all sg-97ffa7f2 inbound:
> IPPermissions:tcp(53-53)  source: [10.0.20.100/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:-1(None-None)  source: [sg-e632d982-995635159130]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:tcp(22-22)  source: [67.184.225.222/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:tcp(1024-65535)  source: [10.0.20.100/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:tcp(80-80)  source: [24.12.30.198/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:udp(138-138)  source: [10.0.20.100/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:udp(53-53)  source: [24.12.30.198/32]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:tcp(30015-30015)  source: [0.0.0.0/0]
>
> SecurityGroup:wordpress-app-SG sg-99c4befc inbound:
> IPPermissions:icmp(-1--1)  source: [10.0.20.100/32]
>
> SecurityGroup:default sg-c65a20a3 inbound: IPPermissions:-1(None-None)
>  source: [sg-c65a20a3-995635159130]
>
> SecurityGroup:default sg-c65a20a3 inbound: IPPermissions:-1(None-None)
>  source: [sg-99c4befc-995635159130]
>
> SecurityGroup:sg3-MySecurityGroup2-1HGPN4UF57XN6 sg-4ee73729 inbound:
> IPPermissions:tcp(22-22)  source: [192.168.1.12/32]
>
> SecurityGroup:AWS-AMI-SG sg-35568d51 inbound: IPPermissions:tcp(22-22)
>  source: [0.0.0.0/0]
>
> SecurityGroup:launch-wizard-2 sg-932255f6 inbound:
> IPPermissions:tcp(22-22)  source: [10.0.20.100/32]
>
> SecurityGroup:launch-wizard-2 sg-932255f6 inbound:
> IPPermissions:tcp(443-443)  source: [0.0.0.0/0]
>
> >>>
>
>
> Here is the output i am looking for....
>
>
> rule1 = [{
>
>     'cidr': '67.184.225.222/32',
>
>     'proto': 'tcp',
>
>     'port': 80
>
> },{
>
>     'cidr': '67.184.225.222/32',
>
>     'proto': 'tcp',
>
>     'port': 5500
>
> }]
>
>
> rule2 = [{
>
>     'cidr': '[0.0.0.0/0',
>
>     'proto': 'tcp',
>
>     'port': 80
>
> }]
>
>
> rule3 = [{
>
>     'cidr': '0.0.0.0/0',
>
>     'proto': 'tcp',
>
>     'port': 22
>
> },{
>
>     'cidr': '0.0.0.0/0',
>
>     'proto': 'tcp',
>
>     'port': 80
>
> }]
>
>
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>
>


-- 
*Pablo Lucena*
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