cdn check new workflow

[brenocss]

• As this issue cname based cdn detection  #27 suggests, we could change cdncheck behavior to handle dns_resposes. therefore, I suggest this workflow if we just have dns_response

1. handle dns_response
2. get ip's from dns_response
3. check if belongs to the project discovery cdn ip list ( if does return true , cdn_name )
4. if not, get cnames from dns_response
5. check if belongs to cname cdn list ( if does return true , cdn_name and add this ip to cdn ip list )

• As this issue wappalyzer based cdn detection #28 suggests , we can also handle the tech_detection response to determine if it belongs to a cdn/waf. we could add this scan as well. I suggest this workflow if we have dns_response + http_response.

1. handle dns_response
2. get ip's from dns_response
3. check if belongs to the project discovery cdn ip list ( if does return true , cdn_name )
4. if not, get cnames from dns_response
5. check if belongs to cname cdn list ( if does return true , cdn_name and add this ip to cdn ip list )
6. if not, check http response technologies.
7. check if any technology belongs to any cdn/waf ( if does return true , cdn_name and add this ip to cdn ip list )