Class: S3BrowserUploads::FormDefinition

Inherits:
Object
  • Object
show all
Defined in:
lib/s3_browser_uploads/form_definition.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ FormDefinition

Returns a new instance of FormDefinition.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 57

def initialize(options={})
  @fields = {}
  @conditions = {}
  options.each {|key, value| public_send("#{key}=", value)}
  @digest = OpenSSL::Digest::Digest.new('sha1')
  @hmac = lambda {|data| OpenSSL::HMAC.digest(@digest, @aws_secret_access_key, data)}
end

Instance Attribute Details

#aws_secret_access_key ⇒ Object

Returns the value of attribute aws_secret_access_key.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 6

def aws_secret_access_key
  @aws_secret_access_key
end

#conditions ⇒ Object

Returns the value of attribute conditions.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 6

def conditions
  @conditions
end

#expires ⇒ Object

Returns the value of attribute expires.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 6

def expires
  @expires
end

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 6

def fields
  @fields
end

#region ⇒ Object

Returns the value of attribute region.



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# File 'lib/s3_browser_uploads/form_definition.rb', line 6

def region
  @region
end

Instance Method Details

#add_condition(key, condition) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 41

def add_condition key, condition
  @conditions[key] = case condition
  when String then {key => condition} 
  when Hash then 
    [condition.keys.first, "$#{key}", condition.values.first]
  when Range then
    [key, condition.begin, condition.end]
  else
    raise ArgumentError, "unknown condition type #{condition}"
  end
end

#add_field(key, value) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 35

def add_field key, value
  fields[key] = value
  add_condition key, value
  value
end

#aws_access_key_id ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 13

def aws_access_key_id
  fields['AWSAccessKeyID'] #access key id is not included in the policy
end

#aws_access_key_id=(value) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 9

def aws_access_key_id= value
  fields['AWSAccessKeyID'] = value #access key id is not included in the policy
end

#aws_session_token ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 18

def aws_session_token
  fields['x-amz-security-token']
end

#aws_session_token=(value) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 22

def aws_session_token= value
  add_field 'x-amz-security-token', value
end

#bucket ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 27

def bucket
  fields['bucket']
end

#bucket=(value) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 31

def bucket= value
  add_field 'bucket', value
end

#encoded_policy ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 73

def encoded_policy
  Base64.strict_encode64(policy_document.to_json)
end

#endpoint ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 69

def endpoint
  "https://#{bucket}.s3-#{region}.amazonaws.com"
end

#policy_document ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 77

def policy_document
  {
    'expiration' => expires.xmlschema,
    'conditions' => @conditions.values
  }
end

#restrict_content_length(range) ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 53

def restrict_content_length range
  add_condition 'content-length-range', range
end

#signature ⇒ Object 



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# File 'lib/s3_browser_uploads/form_definition.rb', line 65

def signature
  Base64.strict_encode64(@hmac[encoded_policy])
end