Class: Hiera::Backend::Eyaml::Subcommands::Edit
Class Method Summary
collapse
all_options, attach_option, find, hidden?, load_config_file, parse, prettyname
Class Method Details
.description ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 19
def self.description
"edit an eyaml file"
end
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.execute ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 70
def self.execute
editor = EditHelper.find_editor
encrypted_parser = Parser::ParserFactory.encrypted_parser
tokens = encrypted_parser.parse Eyaml::Options[:input_data]
decrypted_input = tokens.each_with_index.to_a.map{|(t,index)| t.to_decrypted :index => index}.join
decrypted_file_content = Eyaml::Options[:no_preamble] ? decrypted_input : (self.preamble + decrypted_input)
begin
decrypted_file = EditHelper.write_tempfile decrypted_file_content unless decrypted_file
system "#{editor} \"#{decrypted_file}\""
status = $?
raise StandardError, "File was moved by editor" unless File.file? decrypted_file
raw_edited_file = File.read decrypted_file
edited_file = raw_edited_file.split($/,-1).drop_while {|line| line.start_with?(self.prefix)}.join($/)
raise StandardError, "Editor #{editor} has not exited?" unless status.exited?
raise StandardError, "Editor did not exit successfully (exit code #{status.exitstatus}), aborting" unless status.exitstatus == 0
raise StandardError, "Edited file is blank" if edited_file.empty?
if edited_file == decrypted_input
LoggingHelper.info "No changes detected, exiting"
else
decrypted_parser = Parser::ParserFactory.decrypted_parser
edited_tokens = decrypted_parser.parse(edited_file)
used_ids = edited_tokens.find_all{ |t| t.class.name =~ /::EncToken$/ and !t.id.nil? }.map{ |t| t.id }
if used_ids.length != used_ids.uniq.length
raise RecoverableError, "A duplicate DEC(ID) was found so I don't know how to proceed. This is probably because you copy and pasted a value - if you do this please delete the ID in parentheses"
end
edited_denoised_tokens = edited_tokens.map{ |token|
if token.class.name =~ /::EncToken$/ && !token.id.nil?
old_token = tokens[token.id]
if old_token.plain_text.eql? token.plain_text
old_token
else
token
end
else
token
end
}
encrypted_output = edited_denoised_tokens.map{ |t| t.to_encrypted }.join
filename = Eyaml::Options[:eyaml]
File.open("#{filename}", 'w') { |file|
file.write encrypted_output
}
end
rescue RecoverableError => e
LoggingHelper.info e
if agree "Return to the editor to try again?"
retry
else
raise e
end
ensure
EditHelper.secure_file_delete :file => decrypted_file, :num_bytes => [edited_file.length, decrypted_input.length].max
end
nil
end
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.helptext ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 23
def self.helptext
"Usage: eyaml edit [options] <some-eyaml-file>"
end
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.options ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 14
def self.options
[{ :name => :no_preamble,
:description => "Don't prefix edit sessions with the informative preamble" }]
end
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.preamble ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 31
def self.preamble
tags = (["pkcs7"] + Plugins.plugins.collect {|plugin|
plugin.name.split("hiera-eyaml-").last
}).collect{|name| Encryptor.find(name).tag}
preamble = <<-eos
This is eyaml edit mode. This text (lines starting with #{self.prefix} at the top of the
file) will be removed when you save and exit.
- To edit encrypted values, change the content of the DEC(<num>)::PKCS7[]!
block#{(tags.size>1) ? " (or #{tags.drop(1).collect {|tag| "DEC(<num>)::#{tag}[]!" }.join(' or ')})." : '.' }
WARNING: DO NOT change the number in the parentheses.
- To add a new encrypted value copy and paste a new block from the
appropriate example below. Note that:
* the text to encrypt goes in the square brackets
* ensure you include the exclamation mark when you copy and paste
* you must not include a number when adding a new block
e.g. #{tags.collect {|tag| "DEC::#{tag}[]!" }.join(' -or- ')}
eos
preamble.gsub(/^/, "#{self.prefix} ")
end
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.prefix ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 27
def self.prefix
'#|'
end
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.validate(options) ⇒ Object
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# File 'lib/hiera/backend/eyaml/subcommands/edit.rb', line 53
def self.validate options
Trollop::die "You must specify an eyaml file" if ARGV.empty?
options[:source] = :eyaml
options[:eyaml] = ARGV.shift
if File.exists? options[:eyaml]
begin
options[:input_data] = File.read options[:eyaml]
rescue
raise StandardError, "Could not open file for reading: #{options[:eyaml]}"
end
else
LoggingHelper.info "#{options[:eyaml]} doesn't exist, editing new file"
options[:input_data] = "---"
end
options
end
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