Module: Sshx::Cli

Defined in:
lib/sshx/cli.rb

Constant Summary collapse

@@home_directory = 
File.expand_path('~')
@@namespace_separator = 
'.'
@@enable_alias = 
true
@@ssh_path = 
`which ssh`
@@ssh_config_path = 
@@home_directory + '/.ssh/config'
@@sshx_config_path = 
@@home_directory + '/.sshx/config'

Class Method Summary collapse

Class Method Details

.get_hostname_in_args(args) ⇒ Object 



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# File 'lib/sshx/cli.rb', line 61

def get_hostname_in_args(args)

	is_option_parameter = false

	args.each{|arg|
		if /^-/ =~ arg
		is_option_parameter = true
		next
		elsif is_option_parameter
		is_option_parameter = false
		next
		else
		return arg
		end
	}

end

.get_hosts ⇒ Object 



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# File 'lib/sshx/cli.rb', line 226

def get_hosts()

	hosts = []

	open(@@ssh_config_path) {|file|
		while line = file.gets

			line = line.chomp

			matches = line.scan(/Host\s+([^\s]+)/i)
			if matches.length == 0
			next
			end

			hosts.push(matches[0][0])

		end
	}

	return hosts

end

.init ⇒ Object 



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# File 'lib/sshx/cli.rb', line 79

def init()

	if File.exist?(@@home_directory + '/.sshx')
	return true
	end

	puts "\e[36m"
	puts ' ------------------------- '
	puts '   ####  #### #   # #   #  '
	puts '  #     #     #   #  # #   '
	puts '   ###   ###  #####   #    '
	puts '      #     # #   #  # #   '
	puts '  ####  ####  #   # #   #  '
	puts ' ------------------------- '
	puts '     Welcome to sshx!      '
	puts "\e[0m"
	puts 'Initialize sshx...'

	puts 'Import ssh config file...'

	Dir.mkdir(@@home_directory + '/.sshx')
	FileUtils.cp(@@home_directory + '/.ssh/config', @@home_directory + '/.sshx/ssh_config')

	puts 'Make config file...'

	File.open(@@home_directory + '/.sshx/config', 'w'){|file|
		file.puts('NamespaceSeparator ' + @@namespace_separator)
		file.puts('EnableAlias ' + (@@enable_alias?'true':'false'))
		file.puts('SshPath ' + @@ssh_path)
	}

	puts 'Edit .bashrc file...'

	bashrc_path = nil
	initial_commands = []
	initial_commands.push('# Initialize sshx')
	initial_commands.push('eval "$(sshx init -)"')
	initial_command = initial_commands.join("\n")

	if File.exist?(@@home_directory + '/.bashrc')
		bashrc_path = @@home_directory + '/.bashrc'
	elsif File.exist?(@@home_directory + '/.bash_profile')
		bashrc_path = @@home_directory + '/.bash_profile'
	else
		puts "\e[33m[ERROR] Failed to find ~/.bashrc or ~/.bash_profile. The following command should be run at the begining of shell.\e[0m"
		puts ''
		puts initial_command
		puts ''
	return false
	end

	File.open(bashrc_path, 'a'){|file|
		file.puts(initial_command)
	}

	puts 'Successfully initialized.'
	puts ''

	return true

end

.load_config ⇒ Object 



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# File 'lib/sshx/cli.rb', line 141

def load_config()

	file = open(@@home_directory + '/.sshx/config')
	while line = file.gets

		line = line.chomp

		matches = line.scan(/NamespaceSeparator\s+([^\s]*)/i)
		if matches.length > 0
		@@namespace_separator = matches[0][0]
		next
		end

		matches = line.scan(/EnableAlias\s+([^\s]*)/i)
		if matches.length > 0
		@@enable_alias = (matches[0][0] =~ /true$/i ? true : false)
		next
		end

		matches = line.scan(/SshPath\s+([^\s]*)/i)
		if matches.length > 0
		@@ssh_path = matches[0][0]
		next
		end

	end
	file.close

end

.make_alias_commands ⇒ Object 



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# File 'lib/sshx/cli.rb', line 274

def make_alias_commands()

	commands = [];

	commands.push('alias ssh=sshx')
	commands.push('complete -F _sshx ssh')

	return commands

end

.make_commands ⇒ Object 



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# File 'lib/sshx/cli.rb', line 249

def make_commands()

	commands = []

	hosts = get_hosts()
	commands.concat(make_complete_commands(hosts))
	if @@enable_alias
		commands.concat(make_alias_commands())
	end

	return commands

end

.make_complete_commands(hosts) ⇒ Object 



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# File 'lib/sshx/cli.rb', line 263

def make_complete_commands(hosts)

	commands = [];

	commands.push('_sshx(){ COMPREPLY=($(compgen -W "' + hosts.join(' ') + '" ${COMP_WORDS[COMP_CWORD]})) ; }')
	commands.push('complete -F _sshx sshx')

	return commands

end

.make_ssh_config ⇒ Object 



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# File 'lib/sshx/cli.rb', line 171

def make_ssh_config()

	@@home_directory = File.expand_path('~')

	configs = []

	configs.push('#############################################################')
	configs.push('# CAUTION!')
	configs.push('# This config is auto generated by sshx')
	configs.push('# You cannot edit this file. Edit ~/.sshx/ssh_config insted.')
	configs.push('#############################################################')
	configs.push('')

	Dir::foreach(@@home_directory + '/.sshx/') {|file_path|

		if /^\./ =~ file_path
		next
		end

		if /^config$/i =~ file_path
		next
		end

		file = open(@@home_directory + '/.sshx/' + file_path)

		namespace = nil

		while line = file.gets

			line = line.chomp

			matches = line.scan(/Namespace\s+([^\s]+)/i)
			if matches.length > 0
			namespace = matches[0][0]
			next
			end

			if namespace
				line = line.gsub(/(Host\s+)([^\s]+)/i, '\1' + namespace + @@namespace_separator + '\2')
			end

			configs.push(line)

		end

		file.close

	}

	file = open(@@ssh_config_path, 'w')
	file.write(configs.join("\n"))
	file.close

end

.run_tmux(commands) ⇒ Object 



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# File 'lib/sshx/cli.rb', line 285

def run_tmux(commands)

	tmux_path = `which tmux`
	if $?.exitstatus > 0
		puts '[ERROR] tmux must be installed to use multi host connection. Install tmux from the following url. http://tmux.sourceforge.net/'
		exit 1
	end

	window_name = 'sshx-window'
	session_name = 'sshx-session-' + Time.now.to_i.to_s + Time.now.usec.to_s
	layout = 'tiled'

	`tmux start-server`
	`tmux new-session -d -n #{window_name} -s #{session_name}`

	commands.each_with_index { |command, index|
		if index > 0
			`tmux split-window -v -t #{window_name}`
		end
		escaped_command = command.shellescape
		`tmux send-keys #{escaped_command} C-m`
		`tmux select-layout -t #{window_name} #{layout}`
	}

	`tmux set-window-option synchronize-panes on`
	`tmux attach-session -t #{session_name}`

end

.start(args = ARGV) ⇒ Object 



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# File 'lib/sshx/cli.rb', line 14

def start(args = ARGV)

	if !init()
		exit 1
	end

	load_config()
	make_ssh_config()

	if args.length == 0
		puts 'sshx is just a wrapper of ssh.'
		puts `#{@@ssh_path}`
	return
	end

	if args.length == 2 && args[0] == 'init' && args[1] == '-'
		puts make_commands().join("\n")
	return
	end

	commands = []
	hostname_arg = get_hostname_in_args(args)
	hostnames = hostname_arg.split(/\s*,\s*/)
	ssh_command = hostnames.length >= 2 ? $0 : @@ssh_path
	hostnames.each{|hostname|
		shell_args = []
		args.each{|arg|
			if arg == hostname_arg
			shell_args.push(hostname.shellescape)
			next
			end
			shell_args.push(arg.shellescape)
		}
		commands.push(ssh_command + ' ' + shell_args.join(' '))
	}

	if commands.length == 1
		system(commands[0])
	else
		run_tmux(commands)
	end

	status = $?.exitstatus
	exit status

end