Module: Msf::DBManager::Host

Included in:
Msf::DBManager
Defined in:
lib/msf/core/db_manager/host.rb

Instance Method Summary collapse

Instance Method Details

#add_host_tag(opts) ⇒ Object 



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# File 'lib/msf/core/db_manager/host.rb', line 71

def add_host_tag(opts)
  wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)
  tag_name = opts[:tag_name] # This will be the string of the tag that we are using.

  host = find_host_by_address_or_id(opts, wspace)

  # If a host was found
  if host
    # Set host_id to the ID of the host entry in the database that was found.
    host_id = host[:id]

    # Then proceed to go ahead and find potential tags that might have been already
    # created that match the one we are trying to add.
    possible_tags = Mdm::Tag.joins(:hosts).where("hosts.workspace_id = ? and hosts.id = ? and tags.name = ?", wspace.id, host_id, tag_name).order("tags.id DESC").limit(1)

    # If one exists, then use it, otherwise create a new Mdm::Tag, and update
    # the data in the database if the entry was found to need updating (aka the tag
    # hasn't already been applied).
    # @type [Mdm::Tag]
    tag = (possible_tags.blank? ? Mdm::Tag.new : possible_tags.first)
    tag.name = tag_name
    tag.hosts = [host]
    tag.save! if tag.changed?
    tag
  end
end

#del_host(wspace, address, comm = '') ⇒ Object

TODO: doesn’t appear to have any callers. How is this used? Deletes a host and associated data matching this address/comm



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# File 'lib/msf/core/db_manager/host.rb', line 4

def del_host(wspace, address, comm='')
::ApplicationRecord.connection_pool.with_connection {
  address, scope = address.split('%', 2)
  host = wspace.hosts.find_by_address_and_comm(address, comm)
  host.destroy if host
}
end

#delete_host(opts) ⇒ Array

Deletes Host entries based on the IDs passed in.

Parameters:

  • opts (:ids) —
    Array

    Array containing Integers corresponding to the IDs of the Host entries to delete.

Returns:

  • (Array) —

    Array containing the Mdm::Host objects that were successfully deleted.

Raises:

  • (ArgumentError) 


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# File 'lib/msf/core/db_manager/host.rb', line 16

def delete_host(opts)
  raise ArgumentError.new("The following options are required: :ids") if opts[:ids].nil?

  ::ApplicationRecord.connection_pool.with_connection {
    deleted = []
    opts[:ids].each do |host_id|
      host = Mdm::Host.find(host_id)
      begin
        deleted << host.destroy
      rescue # refs suck
        elog("Forcibly deleting #{host.address}")
        deleted << host.delete
      end
    end

    return deleted
  }
end

#delete_host_tag(opts) ⇒ Object

TODO:

This will have to be pulled out if tags are used for more than just hosts

ATM it will delete the tag from the tag table, not the host<->tag link



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# File 'lib/msf/core/db_manager/host.rb', line 100

def delete_host_tag(opts)
  wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)
  tag_name = opts[:tag_name]
  tag_ids = []

  # If the command line included an address or address range then use this.
  # Otherwise delete all entries that match the given tag.
  host = find_host_by_address_or_id(opts, wspace)
  if host
    found_tags = Mdm::Tag.joins(:hosts).where("hosts.workspace_id = ? and hosts.id = ? and tags.name = ?", wspace.id, host.id, tag_name)
    found_tags.each do |t|
      tag_ids << t.id
    end

    deleted_tags = []

    tag_ids.each do |id|
      tag = Mdm::Tag.find_by_id(id)
      deleted_tags << tag
      tag.destroy
    end

    return deleted_tags
  end
end

#each_host(wspace = framework.db.workspace, &block) ⇒ Object

Iterates over the hosts table calling the supplied block with the host instance of each entry.



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# File 'lib/msf/core/db_manager/host.rb', line 39

def each_host(wspace=framework.db.workspace, &block)
::ApplicationRecord.connection_pool.with_connection {
  wspace.hosts.each do |host|
    block.call(host)
  end
}
end

#find_host_by_address_or_id(opts, wspace) ⇒ Object 



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# File 'lib/msf/core/db_manager/host.rb', line 55

def find_host_by_address_or_id(opts, wspace)
  # Find the host entry in the current workspace by searching on
  # the ID if available. If this isn't possible then try search on
  # the IP address of the host we are currently processing, then save the database
  # entry into the "host" variable.
  if opts[:id]
    host = wspace.hosts.find(opts[:id])
  elsif opts[:address]
    host = wspace.hosts.find_by_address(opts[:address])
  else
    raise ::ArgumentError, 'opts hash did not contain an :id or :address entry!'
  end

  host
end

#find_or_create_host(opts) ⇒ Object

Exactly like report_host but waits for the database to create a host and returns it.



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# File 'lib/msf/core/db_manager/host.rb', line 48

def find_or_create_host(opts)
  host = get_host(opts.clone)
  return host unless host.nil?

  report_host(opts)
end

#get_host(opts) ⇒ Object

Find a host. Performs no database writes.



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# File 'lib/msf/core/db_manager/host.rb', line 139

def get_host(opts)
  if opts.kind_of? ::Mdm::Host
    return opts
  elsif opts.kind_of? String
    raise RuntimeError, "This invocation of get_host is no longer supported: #{caller}"
  else
    address = opts[:addr] || opts[:address] || opts[:host] || return
    return address if address.kind_of? ::Mdm::Host
  end
::ApplicationRecord.connection_pool.with_connection {
  wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)

  address = Msf::Util::Host.normalize_host(address)
  return wspace.hosts.find_by_address(address)
}
end

#get_host_tags(opts) ⇒ Object 



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# File 'lib/msf/core/db_manager/host.rb', line 126

def get_host_tags(opts)
  wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)
  host_id = opts[:id]

  host = wspace.hosts.find(host_id)
  if host
    host.tags
  end
end

#host_state_changed(host, ostate) ⇒ Object 



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# File 'lib/msf/core/db_manager/host.rb', line 181

def host_state_changed(host, ostate)
  begin
    framework.events.on_db_host_state(host, ostate)
  rescue ::Exception => e
    wlog("Exception in on_db_host_state event handler: #{e.class}: #{e}")
    wlog("Call Stack\n#{e.backtrace.join("\n")}")
  end
end

#hosts(opts) ⇒ Object

Returns a list of all hosts in the database



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# File 'lib/msf/core/db_manager/host.rb', line 157

def hosts(opts)
  ::ApplicationRecord.connection_pool.with_connection {
    # If we have the ID, there is no point in creating a complex query.
    if opts[:id] && !opts[:id].to_s.empty?
      return Array.wrap(Mdm::Host.find(opts[:id]))
    end

    wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)

    conditions = {}
    conditions[:state] = [Msf::HostState::Alive, Msf::HostState::Unknown] if opts[:non_dead]
    conditions[:address] = opts[:address] if opts[:address] && !opts[:address].empty?

    if opts[:search_term] && !opts[:search_term].empty?
      column_search_conditions = Msf::Util::DBManager.create_all_column_search_conditions(Mdm::Host, opts[:search_term])
      tag_conditions = Arel::Nodes::Regexp.new(Mdm::Tag.arel_table[:name], Arel::Nodes.build_quoted("(?mi)#{opts[:search_term]}"))
      search_conditions = column_search_conditions.or(tag_conditions)
      wspace.hosts.where(conditions).where(search_conditions).includes(:tags).references(:tags).order(:address)
    else
      wspace.hosts.where(conditions).order(:address)
    end
  }
end

#report_host(opts) ⇒ Object

Report a host’s attributes such as operating system and service pack

The opts parameter MUST contain

:host

– the host’s ip address

The opts parameter can contain:

:state

– one of the Msf::HostState constants

:os_name

– something like “Windows”, “Linux”, or “Mac OS X”

:os_flavor

– something like “Enterprise”, “Pro”, or “Home”

:os_sp

– something like “SP2”

:os_lang

– something like “English”, “French”, or “en-US”

:arch

– one of the ARCHITECTURES listed in metasploit_data_models/app/models/mdm/host.rb

:mac

– the host’s MAC address

:scope

– interface identifier for link-local IPv6

:virtual_host

– the name of the virtualization software, eg “VMWare”, “QEMU”, “Xen”, “Docker”, etc.



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# File 'lib/msf/core/db_manager/host.rb', line 207

def report_host(opts)

  return if !active
  addr = opts.delete(:host) || return

  # Sometimes a host setup through a pivot will see the address as "Remote Pipe"
  if addr.eql? "Remote Pipe"
    return
  end

::ApplicationRecord.connection_pool.with_connection {
  wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework)
  opts = opts.clone
  opts.delete(:workspace)

  begin
    retry_attempts ||= 0
    if !addr.kind_of? ::Mdm::Host
      original_addr = addr
      addr = Msf::Util::Host.normalize_host(original_addr)

      unless ipv46_validator(addr)
        raise ::ArgumentError, "Invalid IP address in report_host(): #{original_addr}"
      end

      conditions = {address: addr}
      conditions[:comm] = opts[:comm] if !opts[:comm].nil? && opts[:comm].length > 0
      host = wspace.hosts.where(conditions).first_or_initialize
    else
      host = addr
    end

    ostate = host.state

    # Truncate the info field at the maximum field length
    if opts[:info]
      opts[:info] = opts[:info][0,65535]
    end

    # Truncate the name field at the maximum field length
    if opts[:name]
      opts[:name] = opts[:name][0,255]
    end

    opts.each do |k,v|
      if host.attribute_names.include?(k.to_s)
        unless host.attribute_locked?(k.to_s)
          host[k] = v.to_s.gsub(/[\x00-\x1f]/n, '')
        end
      elsif !v.blank?
        dlog("Unknown attribute for ::Mdm::Host: #{k}")
      end
    end
    host.info = host.info[0,::Mdm::Host.columns_hash["info"].limit] if host.info

    # Set default fields if needed
    host.state = Msf::HostState::Alive if host.state.nil? || host.state.empty?
    host.comm = '' unless host.comm
    host.workspace = wspace unless host.workspace

    begin
      framework.events.on_db_host(host) if host.new_record?
    rescue => e
      wlog("Exception in on_db_host event handler: #{e.class}: #{e}")
      wlog("Call Stack\n#{e.backtrace.join("\n")}")
    end

    host_state_changed(host, ostate) if host.state != ostate

    if host.changed?
      msf_import_timestamps(opts, host)
      host.save!
    end
  rescue ActiveRecord::RecordNotUnique, ActiveRecord::RecordInvalid
    # two concurrent report requests for a new host could result in a RecordNotUnique or
    # RecordInvalid exception, simply retry the report once more as an optimistic approach
    retry if (retry_attempts+=1) <= 1
    raise
  end

  if opts[:task]
    Mdm::TaskHost.create(
        :task => opts[:task],
        :host => host
    )
  end

  host
}
end

#update_host(opts) ⇒ Object 



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# File 'lib/msf/core/db_manager/host.rb', line 298

def update_host(opts)
  ::ApplicationRecord.connection_pool.with_connection {
    # process workspace string for update if included in opts
    wspace = Msf::Util::DBManager.process_opts_workspace(opts, framework, false)
    opts = opts.clone()
    opts[:workspace] = wspace if wspace

    id = opts.delete(:id)
    host = Mdm::Host.find(id)
    host.update!(opts)
    return host
  }
end