Class: Proxy::Omaha::HttpVerify

Inherits:
Object
  • Object
show all
Includes:
Log
Defined in:
lib/smart_proxy_omaha/http_verify.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ HttpVerify

Returns a new instance of HttpVerify.



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 7

def initialize(opts = {})
  self.http_request = opts.fetch(:http_request)
  self.local_file = opts.fetch(:local_file)
  self.filename = opts.fetch(:filename, File.basename(local_file))
end

Instance Attribute Details

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 5

def filename
  @filename
end

#http_request ⇒ Object

Returns the value of attribute http_request.



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 5

def http_request
  @http_request
end

#local_file ⇒ Object

Returns the value of attribute local_file.



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 5

def local_file
  @local_file
end

Instance Method Details

#content_length ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 64

def content_length
  length = headers['content-length'] || headers['x-goog-stored-content-length']
  length.first.to_i if length
end

#file_size_valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/smart_proxy_omaha/http_verify.rb', line 20

def file_size_valid?
  unless remote_size
    logger.error "#{filename}: Cannot determine remote file size."
    return false
  end
  unless local_size == remote_size
    logger.debug "#{filename}: File sizes do not match. Remote: #{remote_size}, Local: #{local_size}"
    return false
  end
  true
end

#headers ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 69

def headers
  @headers ||= http_request.to_hash
end

#local_md5 ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 56

def local_md5
  @local_md5 ||= Digest::MD5.file(local_file).base64digest
end

#local_size ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 32

def local_size
  File.size(local_file)
end

#md5_hash_valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/smart_proxy_omaha/http_verify.rb', line 40

def md5_hash_valid?
  unless local_md5 == remote_md5
    logger.debug "#{filename}: MD5 checksums do not match. Remote: #{remote_md5}, Local: #{local_md5}"
    return false
  end
  true
end

#remote_hashes ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 48

def remote_hashes
  headers['x-goog-hash'].inject({}) do |hsh, header|
    key, value = header.split('=', 2)
    hsh[key] = value
    hsh
  end
end

#remote_md5 ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 60

def remote_md5
  remote_hashes['md5']
end

#remote_size ⇒ Object 



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# File 'lib/smart_proxy_omaha/http_verify.rb', line 36

def remote_size
  @remote_size ||= content_length
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/smart_proxy_omaha/http_verify.rb', line 13

def valid?
  logger.debug "#{filename}: Verifying if file is valid."
  return false unless file_size_valid?
  return false if headers['x-goog-hash'] && !md5_hash_valid?
  true
end