Class: Rex::Text::Table

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/text/table.rb

Overview

Prints text in a tablized format. Pretty lame at the moment, but whatever.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Table

Initializes a text table instance using the supplied properties. The Table class supports the following hash attributes:

Header

The string to display as a heading above the table. If none is specified, no header will be displayed.

HeaderIndent

The amount of space to indent the header. The default is zero.

Columns

The array of columns that will exist within the table.

Rows

The array of rows that will exist.

Width

The maximum width of the table in characters.

Indent

The number of characters to indent the table.

CellPad

The number of characters to put between each horizontal cell.

Prefix

The text to prefix before the table.

Postfix

The text to affix to the end of the table.

Sortindex

The column to sort the table on, -1 disables sorting.



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# File 'lib/rex/text/table.rb', line 60

def initialize(opts = {})
  self.header   = opts['Header']
  self.headeri  = opts['HeaderIndent'] || 0
  self.columns  = opts['Columns'] || []
  # updated below if we got a "Rows" option
  self.rows     = []

  self.width    = opts['Width']   || 80
  self.indent   = opts['Indent']  || 0
  self.cellpad  = opts['CellPad'] || 2
  self.prefix   = opts['Prefix']  || ''
  self.postfix  = opts['Postfix'] || ''
  self.colprops = []
  self.scterm   = /#{opts['SearchTerm']}/mi if opts['SearchTerm']

  self.sort_index  = opts['SortIndex'] || 0
  self.sort_order  = opts['SortOrder'] || :forward

  # Default column properties
  self.columns.length.times { |idx|
    self.colprops[idx] = {}
    self.colprops[idx]['MaxWidth'] = self.columns[idx].length
  }

  # ensure all our internal state gets updated with the given rows by
  # using add_row instead of just adding them to self.rows.  See #3825.
  opts['Rows'].each { |row| add_row(row) } if opts['Rows']

  # Merge in options
  if (opts['ColProps'])
    opts['ColProps'].each_key { |col|
      idx = self.columns.index(col)

      if (idx)
        self.colprops[idx].merge!(opts['ColProps'][col])
      end
    }
  end

end

Instance Attribute Details

#cellpad ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 313

def cellpad
  @cellpad
end

#colprops ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 312

def colprops
  @colprops
end

#columns ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 312

def columns
  @columns
end

#header ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 311

def header
  @header
end

#headeri ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 311

def headeri
  @headeri
end

#indent ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 313

def indent
  @indent
end

#postfix ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 314

def postfix
  @postfix
end

#prefix ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 314

def prefix
  @prefix
end

#rows ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 312

def rows
  @rows
end

#scterm ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 315

def scterm
  @scterm
end

#sort_index ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 315

def sort_index
  @sort_index
end

#sort_order ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 315

def sort_order
  @sort_order
end

#width ⇒ Object

:nodoc:



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# File 'lib/rex/text/table.rb', line 313

def width
  @width
end

Class Method Details

.new_from_csv(csv) ⇒ Object

Build table from CSV dump



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# File 'lib/rex/text/table.rb', line 262

def self.new_from_csv(csv)
  # Read in or keep data, get CSV or die
  if csv.is_a?(String)
    csv = File.file?(csv) ? CSV.read(csv) : CSV.parse(csv)
  end
  # Adjust for skew
  if csv.first == ["Keys", "Values"]
    csv.shift # drop marker
    cols = []
    rows = []
    csv.each do |row|
      cols << row.shift
      rows << row
    end
    tbl = self.new('Columns' => cols)
    rows.in_groups_of(cols.count) {|r| tbl << r.flatten}
  else
    tbl = self.new('Columns' => csv.shift)
    while !csv.empty? do
      tbl << csv.shift
    end
  end
  return tbl
end

Instance Method Details

#<<(fields) ⇒ Object

Adds a row using the supplied fields.



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# File 'lib/rex/text/table.rb', line 164

def <<(fields)
  add_row(fields)
end

#[](*col_names) ⇒ Object 



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# File 'lib/rex/text/table.rb', line 287

def [](*col_names)
  tbl = self.class.new('Indent' => self.indent,
                       'Header' => self.header,
                       'Columns' => col_names)
  indexes = []

  col_names.each do |col_name|
    index = self.columns.index(col_name)
    raise RuntimeError, "Invalid column name #{col_name}" if index.nil?
    indexes << index
  end

  self.rows.each do |old_row|
    new_row = []
    indexes.map {|i| new_row << old_row[i]}
    tbl << new_row
  end

  return tbl
end

#add_hr ⇒ Object

Adds a horizontal line.



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# File 'lib/rex/text/table.rb', line 226

def add_hr
  rows << '__hr__'
end

#add_row(fields = []) ⇒ Object

Adds a row with the supplied fields.



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# File 'lib/rex/text/table.rb', line 171

def add_row(fields = [])
  if fields.length != self.columns.length
    raise RuntimeError, 'Invalid number of columns!'
  end
  fields.each_with_index { |field, idx|
    # Remove whitespace and ensure String format
    field = field.to_s.strip
    if (colprops[idx]['MaxWidth'] < field.to_s.length)
      old = colprops[idx]['MaxWidth']
      colprops[idx]['MaxWidth'] = field.to_s.length
    end
  }

  rows << fields
end

#drop_left ⇒ Object

Returns new sub-table with headers and rows maching column names submitted

Flips table 90 degrees left



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# File 'lib/rex/text/table.rb', line 236

def drop_left
  tbl = self.class.new(
    'Columns' => Array.new(self.rows.count+1,'  '),
    'Header' => self.header,
    'Indent' => self.indent)
  (self.columns.count+1).times do |ti|
    row = self.rows.map {|r| r[ti]}.unshift(self.columns[ti]).flatten
    # insert our col|row break. kind of hackish
    row[1] = "| #{row[1]}" unless row.all? {|e| e.nil? || e.empty?}
    tbl << row
  end
  return tbl
end

#header_to_s ⇒ Object

Returns the header string.



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# File 'lib/rex/text/table.rb', line 144

def header_to_s # :nodoc:
  if (header)
    pad = " " * headeri

    return pad + header + "\n" + pad + "=" * header.length + "\n\n"
  end

  return ''
end

#ip_cmp(a, b) ⇒ Object 



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# File 'lib/rex/text/table.rb', line 187

def ip_cmp(a, b)
  begin
    a = IPAddr.new(a.to_s)
    b = IPAddr.new(b.to_s)
    return 1  if a.ipv6? && b.ipv4?
    return -1 if a.ipv4? && b.ipv6?
    a <=> b
  rescue IPAddr::Error
    nil
  end
end

#print ⇒ Object Also known as: p

Prints the contents of the table.



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# File 'lib/rex/text/table.rb', line 157

def print
  puts to_s
end

#sort_rows(index = sort_index, order = sort_order) ⇒ Object

Sorts the rows based on the supplied index of sub-arrays If the supplied index is an IPv4 address, handle it differently, but avoid actually resolving domain names.



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# File 'lib/rex/text/table.rb', line 204

def sort_rows(index = sort_index, order = sort_order)
  return if index == -1
  return unless rows
  rows.sort! do |a,b|
    if a[index].nil?
      cmp = -1
    elsif b[index].nil?
      cmp = 1
    elsif a[index] =~ /^[0-9]+$/ and b[index] =~ /^[0-9]+$/
      cmp = a[index].to_i <=> b[index].to_i
    elsif (cmp = ip_cmp(a[index], b[index])) != nil
    else
      cmp = a[index] <=> b[index] # assumes otherwise comparable.
    end
    cmp ||= 0
    order == :forward ? cmp : -cmp
  end
end

#to_csv ⇒ Object

Converts table contents to a csv



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# File 'lib/rex/text/table.rb', line 127

def to_csv
  str = ''
  str << ( columns.join(",") + "\n" )
  rows.each { |row|
    next if is_hr(row) || !row_visible(row)
    str << ( row.map{|x|
      x = x.to_s
      x.gsub(/[\r\n]/, ' ').gsub(/\s+/, ' ').gsub('"', '""')
    }.map{|x| "\"#{x}\"" }.join(",") + "\n" )
  }
  str
end

#to_s ⇒ Object

Converts table contents to a string.



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# File 'lib/rex/text/table.rb', line 104

def to_s
  str  = prefix.dup
  str << header_to_s || ''
  str << columns_to_s || ''
  str << hr_to_s || ''

  sort_rows
  rows.each { |row|
    if (is_hr(row))
      str << hr_to_s
    else
      str << row_to_s(row) if row_visible(row)
    end
  }

  str << postfix

  return str
end

#valid_ip?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rex/text/table.rb', line 250

def valid_ip?(value)
  begin
    IPAddr.new value
    true
  rescue IPAddr::Error
    false
  end
end