metasploit-framework/lib/openvas/openvas-omp.rb

900 lines
19 KiB
Ruby

#
# = openvas-omp.rb: communicate with OpenVAS manager over OMP
#
# Author:: Vlatko Kosturjak
#
# (C) Vlatko Kosturjak, Kost. Distributed under MIT license:
# http://www.opensource.org/licenses/mit-license.php
#
# == What is this library?
#
# This library is used for communication with OpenVAS manager over OMP
# You can start, stop, pause and resume scan. Watch progress and status of
# scan, download report, etc.
#
# == Requirements
#
# Required libraries are standard Ruby libraries: socket,timeout,openssl,
# rexml/document, rexml/text, base64
#
# == Usage:
#
# require 'openvas-omp'
require 'socket'
require 'timeout'
require 'openssl'
require 'rexml/document'
require 'rexml/text'
require 'base64'
# OpenVASOMP module
#
# Usage:
#
# require 'openvas-omp'
module OpenVASOMP
class OMPError < :: RuntimeError
attr_accessor :req, :reason
def initialize(req, reason = '')
self.req = req
self.reason = reason
end
def to_s
"OpenVAS OMP: #{self.reason}"
end
end
class OMPResponseError < OMPError
def initialize
self.reason = "Error in OMP request/response"
end
end
class OMPAuthError < OMPError
def initialize
self.reason = "Authentication failed"
end
end
class XMLParsingError < OMPError
def initialize
self.reason = "XML parsing failed"
end
end
# Class which uses standard REXML to parse OpenVAS replies.
class OpenVASOMP
# initialize object: try to connect to OpenVAS using URL, user and password
#
# Usage:
#
# ov=OpenVASOMP.new(user=>'user',password=>'pass')
# # default: host=>'localhost', port=>'9390'
#
def initialize(p={})
if p.has_key?("host")
@host=p["host"]
else
@host="localhost"
end
if p.has_key?("port")
@port=p["port"]
else
@port=9390
end
if p.has_key?("user")
@user=p["user"]
else
@user="openvas"
end
if p.has_key?("password")
@password=p["password"]
else
@password="openvas"
end
if p.has_key?("bufsize")
@bufsize=p["bufsize"]
else
@bufsize=16384
end
if p.has_key?("debug")
@debug=p["debug"]
else
@debug=0
end
if @debug>3
puts "Host: "+@host
puts "Port: "+@port.to_s()
puts "User: "+@user
end
if @debug>99
puts "Password: "+@password
end
@areq=''
@read_timeout=3
if defined? p["noautoconnect"] and not p["noautoconnect"]
connect()
if defined? p["noautologin"] and not p["noautologin"]
login()
end
end
end
# Sets debug level
#
# Usage:
#
# ov.debug(3)
#
def debug (level)
@debug=level
end
# Low level method - Connect to SSL socket
#
# Usage:
#
# ov.connect()
#
def connect
@plain_socket=TCPSocket.open(@host, @port)
ssl_context = OpenSSL::SSL::SSLContext.new()
@socket = OpenSSL::SSL::SSLSocket.new(@plain_socket, ssl_context)
@socket.sync_close = true
@socket.connect
end
# Low level method - Disconnect SSL socket
#
# Usage:
#
# ov.disconnect()
#
def disconnect
if @socket
@socket.close
end
end
# Low level method: Send request and receive response - socket
#
# Usage:
#
# ov.connect();
# puts ov.sendrecv("<get_version/>")
# ov.disconnect();
#
def sendrecv (tosend)
if not @socket
connect
end
if @debug>3 then
puts "SENDING: "+tosend
end
@socket.puts(tosend)
@rbuf=''
size=0
begin
begin
timeout(@read_timeout) {
a = @socket.sysread(@bufsize)
size=a.length
# puts "sysread #{size} bytes"
@rbuf << a
}
rescue Timeout::Error
size=0
rescue EOFError
raise OMPResponseError
end
end while size>=@bufsize
response=@rbuf
if @debug>3 then
puts "RECEIVED: "+response
end
return response
end
# get OMP version (you don't need to be authenticated)
#
# Usage:
#
# ov.version_get()
#
def version_get
vreq="<get_version/>"
resp=sendrecv(vreq)
resp = "<X>"+resp+"</X>"
begin
docxml = REXML::Document.new(resp)
version=''
version=docxml.root.elements['get_version_response'].elements['version'].text
return version
rescue
raise XMLParsingError
end
end
# produce single XML element with attributes specified as hash
# low-level function
#
# Usage:
#
# ov.xml_attr()
#
def xml_attr(name, opts={})
xml = REXML::Element.new(name)
opts.keys.each do |k|
xml.attributes[k] = opts[k]
end
return xml
end
# produce multiple XML elements with text specified as hash
# low-level function
#
# Usage:
#
# ov.xml_ele()
#
def xml_ele(name, child={})
xml = REXML::Element.new(name)
child.keys.each do |k|
xml.add_element(k)
xml.elements[k].text = child[k]
end
return xml
end
# produce multiple XML elements with text specified as hash
# also produce multiple XML elements with attributes
# low-level function
#
# Usage:
#
# ov.xml_mix()
#
def xml_mix(name, child, attr, elem)
xml = REXML::Element.new(name)
child.keys.each do |k|
xml.add_element(k)
xml.elements[k].text = child[k]
end
elem.keys.each do |k|
xml.add_element(k)
xml.elements[k].attributes[attr] = elem[k]
end
return xml
end
# login to OpenVAS server.
# if successful returns authentication XML for further usage
# if unsuccessful returns empty string
#
# Usage:
#
# ov.login()
#
def login
areq="<authenticate>"+xml_ele("credentials", {"username"=>@user, "password"=>@password}).to_s()+"</authenticate>"
resp=sendrecv(areq+"<HELP/>")
# wrap it inside tags, so rexml does not complain
resp = "<X>"+resp+"</X>"
begin
docxml = REXML::Document.new(resp)
status=docxml.root.elements['authenticate_response'].attributes['status'].to_i()
rescue
raise XMLParsingError
end
if status == 200
@areq=areq
else
raise OMPAuthError
end
end
# check if we're successful logged in
# if successful returns true
# if unsuccessful returns false
#
# Usage:
#
# if ov.logged_in() then
# puts "logged in"
# end
#
def logged_in
if @areq == ''
return false
else
return true
end
end
# logout from OpenVAS server.
# it actually just sets internal authentication XML to empty str
# (as in OMP you have to send username/password each time)
# (i.e. there is no session id)
#
# Usage:
#
# ov.logout()
#
def logout
disconnect()
@areq = ''
end
# OMP low level method - Send string request wrapped with
# authentication XML and return response as string
#
# Usage:
#
# ov.request_xml("<HELP/")
#
def omp_request_raw (request)
resp=sendrecv(@areq+request)
return resp
end
# OMP low level method - Send string request wrapped with
# authentication XML and return REXML parsed object
#
# Usage:
#
# rexmlobject = ov.request_xml("<HELP/")
#
def omp_request_xml (request)
resp=sendrecv(@areq+request)
resp = "<X>"+resp+"</X>"
begin
docxml = REXML::Document.new(resp)
status=docxml.root.elements['authenticate_response'].attributes['status'].to_i
if status<200 and status>299
raise OMPAuthError
end
return docxml.root
rescue
raise XMLParsingError
end
end
# OMP - Create target for scanning
#
# Usage:
#
# target_id = ov.target_create("name"=>"localhost",
# "hosts"=>"127.0.0.1","comment"=>"yes")
#
def target_create (p={})
xmlreq=xml_ele("create_target", p).to_s()
begin
xr=omp_request_xml(xmlreq)
id=xr.elements['create_target_response'].attributes['id']
rescue
raise OMPResponseError
end
return id
end
# OMP - Delete target
#
# Usage:
#
# ov.target_delete(target_id)
#
def target_delete (id)
xmlreq=xml_attr("delete_task",{"target_id" => id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - Get target for scanning and returns rexml object
#
# Usage:
# rexmlobject = target_get_raw("target_id"=>target_id)
#
def target_get_raw (p={})
xmlreq=xml_attr("get_targets", p).to_s()
begin
xr=omp_request_xml(xmlreq)
return xr
rescue
raise OMPResponseError
end
end
# OMP - Get all targets for scanning and returns array of hashes
# with following keys: id,name,comment,hosts,max_hosts,in_use
#
# Usage:
# array_of_hashes = target_get_all()
#
def target_get_all (p={})
begin
xr=target_get_raw(p)
list=Array.new
xr.elements.each('//get_targets_response/target') do |target|
td=Hash.new
td["id"]=target.attributes["id"]
td["name"]=target.elements["name"].text
td["comment"]=target.elements["comment"].text
td["hosts"]=target.elements["hosts"].text
td["max_hosts"]=target.elements["max_hosts"].text
td["in_use"]=target.elements["in_use"].text
list.push td
end
return list
rescue
raise OMPResponseError
end
end
def target_get_byid (id)
begin
xr=target_get_raw("target_id"=>id)
xr.elements.each('//get_targets_response/target') do |target|
td=Hash.new
td["id"]=target.attributes["id"]
td["name"]=target.elements["name"].text
td["comment"]=target.elements["comment"].text
td["hosts"]=target.elements["hosts"].text
td["max_hosts"]=target.elements["max_hosts"].text
td["in_use"]=target.elements["in_use"].text
return td
end
return list
rescue
raise OMPResponseError
end
end
# OMP - get reports and returns raw rexml object as response
#
# Usage:
#
# rexmlobject=ov.report_get_raw("format"=>"PDF")
#
# rexmlobject=ov.report_get_raw(
# "report_id" => "",
# "format"=>"PDF")
#
def report_get_raw (p={})
xmlreq=xml_attr("get_reports",p).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - get report by id and format, returns report
# (already base64 decoded if needed)
#
# format can be: HTML, NBE, PDF, ...
#
# Usage:
#
# pdf_content=ov.report_get_byid(id,"PDF")
# File.open('report.pdf', 'w') {|f| f.write(pdf_content) }
#
def report_get_byid (id,format)
decode=Array["HTML","NBE","PDF"]
xr=report_get_raw("report_id"=>id,"format"=>format)
resp=xr.elements['get_reports_response'].elements['report'].text
if decode.include?(format)
resp=Base64.decode64(resp)
end
return resp
end
# OMP - get report all, returns report
#
# Usage:
#
# pdf_content=ov.report_get_all()
#
def report_get_all ()
begin
xr=report_get_raw("format"=>"NBE")
list=Array.new
xr.elements.each('//get_reports_response/report') do |report|
td=Hash.new
td["id"]=target.attributes["id"]
td["name"]=target.elements["name"].text
td["comment"]=target.elements["comment"].text
td["hosts"]=target.elements["hosts"].text
td["max_hosts"]=target.elements["max_hosts"].text
td["in_use"]=target.elements["in_use"].text
list.push td
end
return list
rescue
raise OMPResponseError
end
end
# OMP - get reports and returns raw rexml object as response
#
# Usage:
#
# rexmlobject=ov.result_get_raw("notes"=>0)
#
def result_get_raw (p={})
begin
xmlreq=xml_attr("get_results",p).to_s()
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - get configs and returns rexml object as response
#
# Usage:
#
# rexmldocument=ov.config_get_raw()
#
def config_get_raw (p={})
xmlreq=xml_attr("get_configs",p).to_s()
begin
xr=omp_request_xml(xmlreq)
return xr
rescue
raise OMPResponseError
end
return false
end
# OMP - get configs and returns hash as response
# hash[config_id]=config_name
#
# Usage:
#
# array_of_hashes=ov.config_get_all()
#
def config_get_all (p={})
begin
xr=config_get_raw(p)
tc=Array.new
xr.elements.each('//get_configs_response/config') do |config|
c=Hash.new
c["id"]=config.attributes["id"]
c["name"]=config.elements["name"].text
c["comment"]=config.elements["comment"].text
tc.push c
end
return tc
rescue
raise OMPResponseError
end
return false
end
# OMP - get configs and returns hash as response
# hash[config_id]=config_name
#
# Usage:
#
# all_configs_hash=ov.config.get()
#
# config_id=ov.config_get().index("Full and fast")
#
def config_get (p={})
begin
xr=config_get_raw(p)
list=Hash.new
xr.elements.each('//get_configs_response/config') do |config|
id=config.attributes["id"]
name=config.elements["name"].text
list[id]=name
end
return list
rescue
raise OMPResponseError
end
return false
end
# OMP - copy config with new name and returns new id
#
# Usage:
#
# new_config_id=config_copy(config_id,"new_name");
#
def config_copy (config_id,name)
xmlreq=xml_attr("create_config",
{"copy"=>config_id,"name"=>name}).to_s()
begin
xr=omp_request_xml(xmlreq)
id=xr.elements['create_config_response'].attributes['id']
return id
rescue
raise OMPResponseError
end
end
# OMP - create config with specified RC file and returns new id
# name = name of new config
# rcfile = base64 encoded OpenVAS rcfile
#
# Usage:
#
# config_id=config_create("name",rcfile);
#
def config_create (name,rcfile)
xmlreq=xml_attr("create_config",
{"name"=>name,"rcfile"=>rcfile}).to_s()
begin
xr=omp_request_xml(xmlreq)
id=xr.elements['create_config_response'].attributes['id']
return id
rescue
raise OMPResponseError
end
end
# OMP - creates task and returns id of created task
#
# Parameters which usually fit in p hash and i hash:
# p = name,comment,rcfile
# i = config,target,escalator,schedule
#
# Usage:
#
# task_id=ov.task_create_raw()
#
def task_create_raw (p={}, i={})
xmlreq=xml_mix("create_task",p,"id",i).to_s()
begin
xr=omp_request_xml(xmlreq)
id=xr.elements['create_task_response'].attributes['id']
return id
rescue
raise OMPResponseError
end
end
# OMP - creates task and returns id of created task
#
# parameters = name,comment,rcfile,config,target,escalator,
# schedule
#
# Usage:
#
# config_id=o.config_get().index("Full and fast")
# target_id=o.target_create(
# {"name"=>"localtarget", "hosts"=>"127.0.0.1", "comment"=>"t"})
# task_id=ov.task_create(
# {"name"=>"testlocal","comment"=>"test", "target"=>target_id,
# "config"=>config_id}
#
def task_create (p={})
specials=Array["config","target","escalator","schedule"]
ids = Hash.new
specials.each do |spec|
if p.has_key?(spec)
ids[spec]=p[spec]
p.delete(spec)
end
end
return task_create_raw(p,ids)
end
# OMP - deletes task specified by task_id
#
# Usage:
#
# ov.task_delete(task_id)
#
def task_delete (task_id)
xmlreq=xml_attr("delete_task",{"task_id" => task_id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - get task and returns raw rexml object as response
#
# Usage:
#
# rexmlobject=ov.task_get_raw("details"=>"0")
#
def task_get_raw (p={})
xmlreq=xml_attr("get_tasks",p).to_s()
begin
xr=omp_request_xml(xmlreq)
return xr
rescue
raise OMPResponseError
end
end
# OMP - get all tasks and returns array with hashes with
# following content:
# id,name,comment,status,progress,first_report,last_report
#
# Usage:
#
# array_of_hashes=ov.task_get_all()
#
def task_get_all (p={})
xr=task_get_raw(p)
t=Array.new
xr.elements.each('//get_tasks_response/task') do |task|
td=Hash.new
td["id"]=task.attributes["id"]
td["name"]=task.elements["name"].text
td["comment"]=task.elements["comment"].text
td["status"]=task.elements["status"].text
td["progress"]=task.elements["progress"].text
if defined? task.elements["first_report"].elements["report"].attributes["id"] then
td["firstreport"]=task.elements["first_report"].elements["report"].attributes["id"]
else
td["firstreport"]=nil
end
if defined? task.elements["last_report"].elements["report"].attributes["id"] then
td["lastreport"]=task.elements["last_report"].elements["report"].attributes["id"]
else
td["lastreport"]=nil
end
t.push td
end
return t
end
# OMP - get task specified by task_id and returns hash with
# following content:
# id,name,comment,status,progress,first_report,last_report
#
# Usage:
#
# hash=ov.task_get_byid(task_id)
#
def task_get_byid (id)
xr=task_get_raw("task_id"=>id,"details"=>0)
xr.elements.each('//get_tasks_response/task') do |task|
td=Hash.new
td["id"]=task.attributes["id"]
td["name"]=task.elements["name"].text
td["comment"]=task.elements["comment"].text
td["status"]=task.elements["status"].text
td["progress"]=task.elements["progress"].text
if defined? task.elements["first_report"].elements["report"].attributes["id"] then
td["firstreport"]=task.elements["first_report"].elements["report"].attributes["id"]
else
td["firstreport"]=nil
end
if defined? task.elements["last_report"].elements["report"].attributes["id"] then
td["lastreport"]=task.elements["last_report"].elements["report"].attributes["id"]
else
td["lastreport"]=nil
end
return (td)
end
end
# OMP - check if task specified by task_id is finished
# (it checks if task status is "Done" in OMP)
#
# Usage:
#
# if ov.task_finished(task_id)
# puts "Task finished"
# end
#
def task_finished (id)
xr=task_get_raw("task_id"=>id,"details"=>0)
xr.elements.each('//get_tasks_response/task') do |task|
if status=task.elements["status"].text == "Done"
return true
else
return false
end
end
end
# OMP - check progress of task specified by task_id
# (OMP returns -1 if task is finished, not started, etc)
#
# Usage:
#
# print "Progress: "
# puts ov.task_progress(task_id)
#
def task_progress (id)
xr=task_get_raw("task_id"=>id,"details"=>0)
xr.elements.each('//get_tasks_response/task') do |task|
return task.elements["progress"].text.to_i()
end
end
# OMP - starts task specified by task_id
#
# Usage:
#
# ov.task_start(task_id)
#
def task_start (task_id)
xmlreq=xml_attr("start_task",{"task_id" => task_id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - stops task specified by task_id
#
# Usage:
#
# ov.task_stop(task_id)
#
def task_stop (task_id)
xmlreq=xml_attr("stop_task",{"task_id" => task_id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - pauses task specified by task_id
#
# Usage:
#
# ov.task_pause(task_id)
#
def task_pause (task_id)
xmlreq=xml_attr("pause_task",{"task_id" => task_id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
# OMP - resumes (or starts) task specified by task_id
#
# Usage:
#
# ov.task_resume_or_start(task_id)
#
def task_resume_or_start (task_id)
xmlreq=xml_attr("resume_or_start_task",{"task_id" => task_id}).to_s()
begin
xr=omp_request_xml(xmlreq)
rescue
raise OMPResponseError
end
return xr
end
end # end of Class
end # of Module