Class: Simp::RPM

Inherits:
Object
  • Object
show all
Defined in:
lib/simp/rpm.rb

Overview

Simp::RPM represents a single package that is built and packaged by the Simp team.

Constant Summary collapse

@@gpg_keys = 
Hash.new

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rpm_source) ⇒ RPM

Constructs a new Simp::RPM object. Requires the path to the spec file from which information will be gathered.

The following information will be retreived:

basename

The name of the package (as it would be queried in yum)

version

The version of the package

release

The release version of the package

* NOTE: If this is a 'spec' file, it will stop on the first '%'
        encountered!
full_version

The full version of the package: [version]-

name

The full name of the package: [basename]-



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# File 'lib/simp/rpm.rb', line 30

def initialize(rpm_source)
  info = Simp::RPM.get_info(rpm_source)
  @basename = info[:name]
  @version = info[:version]
  @release = info[:release]
  @full_version = info[:full_version]
  @name = "#{@basename}-#{@full_version}"
  @sources = Array.new
  @verbose = false
end

Instance Attribute Details

#basename ⇒ Object

Returns the value of attribute basename.



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# File 'lib/simp/rpm.rb', line 11

def basename
  @basename
end

#full_version ⇒ Object

Returns the value of attribute full_version.



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# File 'lib/simp/rpm.rb', line 11

def full_version
  @full_version
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/simp/rpm.rb', line 11

def name
  @name
end

#release ⇒ Object

Returns the value of attribute release.



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# File 'lib/simp/rpm.rb', line 11

def release
  @release
end

#sources ⇒ Object

Returns the value of attribute sources.



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# File 'lib/simp/rpm.rb', line 11

def sources
  @sources
end

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/simp/rpm.rb', line 11

def verbose
  @verbose
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/simp/rpm.rb', line 11

def version
  @version
end

Class Method Details

.copy_wo_vcs(start_dir, src, dest, dereference = true) ⇒ Object

Copies specific content from one directory to another.

start_dir

the root directory where the original files are located within

src

a pattern given to find(1) to match against the desired files to copy

dest

the destination directory to receive the copies



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# File 'lib/simp/rpm.rb', line 45

def self.copy_wo_vcs(start_dir, src, dest, dereference=true)
  if dereference.nil? || dereference
    dereference = "--dereference"
  else
    dereference = ""
  end

  Dir.chdir(start_dir) do
    sh %{find #{src} \\( -path "*/.svn" -a -type d -o -path "*/.git*" \\) -prune -o -print | cpio -u --warning none --quiet --make-directories #{dereference} -p "#{dest}" 2>&1 > /dev/null}
  end
end

.execute(cmd) ⇒ Object

Executes a command and returns a hash with the exit status, stdout output and stderr output.

cmd

command to be executed



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# File 'lib/simp/rpm.rb', line 60

def self.execute(cmd)
  #puts "Executing: [#{cmd}]"
  outfile = File.join('/tmp', "#{ENV['USER']}_#{SecureRandom.hex}")
  errfile = File.join('/tmp', "#{ENV['USER']}_#{SecureRandom.hex}")
  pid = spawn(cmd, :out=>outfile, :err=>errfile)

  begin
    pid,status = Process.wait2(pid)
  rescue Errno::ECHILD
    # process exited before status could be determined
  end

  exit_status = status.nil? ? nil : status.exitstatus
  stdout = IO.read(outfile)
  stderr = IO.read(errfile)

  { :exit_status => exit_status, :stdout => stdout, :stderr => stderr }
ensure
  FileUtils.rm_f([outfile, errfile])
end

.get_info(rpm_source, mock_hash = nil) ⇒ Object

Parses information, such as the version, from the given specfile or RPM into a hash.

Can take an optional mock hash that should have the following structure: 

:command    => The actual mock command to run
:rpm_extras => Extra arguments to pass to RPM. This will probably be a
               reference to the spec file itself




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# File 'lib/simp/rpm.rb', line 90

def self.get_info(rpm_source, mock_hash=nil)
  info = {
    :has_dist_tag => false
  }

  rpm_cmd = "rpm -q --queryformat '%{NAME} %{VERSION} %{RELEASE} %{ARCH}\n'"

  if mock_hash
    # Suppression of error messages is a hack for the following
    # scenario:
    # * The RPM spec file has an invalid date in its %changelog.
    # * The 'bogus date' warning message from rpmbuild
    #   is sent to stderr, while RPM name, version, and release
    #   info is sent to stdout.
    # * mock combines stdout and stderr in the command run.
    # * The 'bogus date' warning message is parsed to generate
    #   the RPM info, instead of the RPM info message.
    rpm_cmd = mock_hash[:command] + ' ' + '"' + rpm_cmd + ' ' + mock_hash[:rpm_extras] + ' 2>/dev/null"'
  end

  if File.readable?(rpm_source)
    if File.read(rpm_source).include?('%{?dist}')
      info[:has_dist_tag] = true
    end

    if rpm_source.split('.').last == 'rpm'
      results = execute("#{rpm_cmd} -p #{rpm_source}")
    elsif mock_hash
      results = execute("#{rpm_cmd}")

      if info[:has_dist_tag]
        info[:dist_tag] = execute(%(#{mock_hash[:command]} --chroot 'rpm --eval "%{dist}"' 2>/dev/null))[:stdout].strip

        info[:dist_tag] = nil if (info[:dist_tag][0].chr == '%')
      end
    else
      results = execute("#{rpm_cmd} --specfile #{rpm_source}")
    end

    if results[:exit_status] != 0
      raise "\#{indent('Error getting RPM info:', 2)}\n\#{indent(results[:stderr].strip, 5)}\n\#{indent(\"Run '\#{rpm_cmd.gsub(\"\\n\",'\\\\n')} --specfile \#{rpm_source}' to recreate the issue.\", 2)}\n"
    end

    info[:name], info[:version], info[:release], info[:arch] = results[:stdout].strip.split("\n").first.split(' ')
  else
    raise "Error: unable to read '#{rpm_source}'"
  end

  info[:full_version] = "#{info[:version]}-#{info[:release]}"

  return info
end

.indent(message, indent_length) ⇒ Object 



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# File 'lib/simp/rpm.rb', line 147

def self.indent(message, indent_length)
   message.split("\n").map {|line| ' '*indent_length + line }.join("\n")
end

.load_key(gpg_key) ⇒ Object

Loads metadata for a GPG key. The GPG key is to be used to sign RPMs. The value of gpg_key should be the full path of the directory where the key resides. If the metadata cannot be found, then the user will be prompted for it.



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# File 'lib/simp/rpm.rb', line 155

def self.load_key(gpg_key)
  keydir = gpg_key
  File.directory?(keydir) || fail("Error: Could not find '#{keydir}'")

  gpg_key = File.basename(gpg_key)

  if @@gpg_keys[gpg_key]
      return @@gpg_keys[gpg_key]
  end

  gpg_name = nil
  gpg_password = nil
  begin
    File.read("#{keydir}/gengpgkey").each_line do |ln|
      name_line = ln.split(/^\s*Name-Email:/)
      if name_line.length > 1
        gpg_name = name_line.last.strip
      end

      passwd_line = ln.split(/^\s*Passphrase:/)
      if passwd_line.length > 1
        gpg_password = passwd_line.last.strip
      end
    end
  rescue Errno::ENOENT
  end

  if gpg_name.nil?
    puts "Warning: Could not find valid e-mail address for use with GPG."
    puts "Please enter e-mail address to use:"
    gpg_name = $stdin.gets.strip
  end

  if gpg_password.nil?
    if File.exist?(%(#{keydir}/password))
      gpg_password = File.read(%(#{keydir}/password)).chomp
    end

    if gpg_password.nil?
      puts "Warning: Could not find a password in '#{keydir}/password'!"
      puts "Please enter your GPG key password:"
      system 'stty -echo'
      gpg_password = $stdin.gets.strip
      system 'stty echo'
    end
  end

  gpg_key_size = nil
  gpg_key_id = nil
  %x(gpg --homedir=#{keydir} --list-keys #{gpg_name} 2>&1).each_line do |line|
    head,data = line.split(/\s+/)
    if head == 'pub'
      gpg_key_size,gpg_key_id = data.split('/')
      break
    end
  end

  if !gpg_key_size || !gpg_key_id
    fail("Error getting GPG Key metadata")
  end

  @@gpg_keys[gpg_key] = {
    :dir => keydir,
    :name => gpg_name,
    :key_id => gpg_key_id,
    :key_size => gpg_key_size,
    :password => gpg_password
  }
end

.sh(args) ⇒ Object 



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# File 'lib/simp/rpm.rb', line 14

def self.sh(args)
  system args
end

.signrpm(rpm, gpg_key) ⇒ Object

Signs the given RPM with the given gpg_key (see Simp::RPM.load_key for details on the value of this parameter).



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# File 'lib/simp/rpm.rb', line 227

def self.signrpm(rpm, gpg_key)
  gpgkey = load_key(gpg_key)

  gpg_sig = nil
  %x(rpm -Kv #{rpm}).each_line do |line|
    if line =~ /key\sID\s(.*):/
      gpg_sig = $1.strip
    end
  end

  unless gpg_sig == gpgkey[:key_id]
    signcommand = "rpm " +
        "--define '%_signature gpg' " +
        "--define '%__gpg %{_bindir}/gpg' " +
        "--define '%_gpg_name #{gpgkey[:name]}' " +
        "--define '%_gpg_path #{gpgkey[:dir]}' " +
        "--resign #{rpm}"
    begin
      PTY.spawn(signcommand) do |read, write, pid|
        begin
          while !read.eof? do
            read.expect(/pass\s?phrase:.*/) do |text|
              write.puts(gpgkey[:password])
              write.flush
            end
          end
        rescue Errno::EIO
          # This ALWAYS happens in Ruby 1.8.
        end
        Process.wait(pid)
      end

      raise "Failure running #{signcommand}" unless $?.success?
    rescue Exception => e
      puts "Error occured while attempting to sign #{rpm}, skipping."
      puts e
    end
  end
end