Class: CVE::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/cve_crawler/cve_parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filters = nil) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/cve_crawler/cve_parser.rb', line 7

def initialize(filters=nil)
  @filters = []
  @filters << CVE::Filter.new

  if filters.is_a?(Array)
    filters.each do |filter|
      @filters << filter
    end
  elsif filters
      @filters << filters
  end
end

Instance Attribute Details

#filters ⇒ Object (readonly)

Returns the value of attribute filters.



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# File 'lib/cve_crawler/cve_parser.rb', line 20

def filters
  @filters
end

Instance Method Details

#extract_cve_identifier(title) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 58

def extract_cve_identifier(title)
  title.split(' ')[0]
end

#filter(results) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 62

def filter(results)
  filtered_contents = []

  results.each do |result|
    result_ok = true

    @filters.each do |filter|
      result_ok = result_ok && !filter.filter(result)
    end

    filtered_contents << result if result_ok
  end

  filtered_contents
end

#inspect ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 78

def inspect
  "<CVE::Parser filters=#{@filters.inspect}>"
end

#parse(content) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 22

def parse(content)
  results = parse_rss_feed(content)

  filter(results)
end

#parse_item(item) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 48

def parse_item(item)
  CVE::Vulnerability.new({
    :identifier => extract_cve_identifier(item.title),
    :title => item.title,
    :link => item.link,
    :description => item.description,
    :date => item.date
  })
end

#parse_items(rss) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 34

def parse_items(rss)
  items = []

  if rss.nil?
    raise 'RSS object failed to parse, is it valid XML?'
  end

  rss.items.each do |item|
    items << parse_item(item)
  end

  items
end

#parse_rss_feed(content) ⇒ Object 



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# File 'lib/cve_crawler/cve_parser.rb', line 28

def parse_rss_feed(content)
  rss = RSS::Parser.parse(content)

  parse_items(rss)
end