Module: Rex::Ui::Text::Shell
- Included in:
- DispatcherShell, PseudoShell
- Defined in:
- lib/rex/ui/text/shell.rb
Overview
The shell class provides a command-prompt style interface in a generic fashion.
Defined Under Namespace
Modules: InputShell
Instance Attribute Summary collapse
-
#disable_output ⇒ Object
Whether or not output has been disabled.
-
#input ⇒ Object
readonly
The input handle to read user input from.
-
#on_command_proc ⇒ Object
Returns the value of attribute on_command_proc.
-
#on_print_proc ⇒ Object
Returns the value of attribute on_print_proc.
-
#output ⇒ Object
readonly
The output handle to write output to.
Instance Method Summary collapse
- #init_tab_complete ⇒ Object
-
#init_ui(in_input = nil, in_output = nil) ⇒ Object
Initializes the user interface input/output classes.
-
#initialize(prompt, prompt_char = '>', histfile = nil) ⇒ Object
Initializes a shell that has a prompt and can be interacted with.
-
#print(msg = '') ⇒ Object
Prints a raw message to the output handle.
-
#print_error(msg = '') ⇒ Object
Prints an error message to the output handle.
-
#print_good(msg = '') ⇒ Object
Prints a good message to the output handle.
-
#print_line(msg = '') ⇒ Object
Prints a line of text to the output handle.
-
#print_status(msg = '') ⇒ Object
Prints a status message to the output handle.
-
#reset_ui ⇒ Object
Resets the user interface handles.
-
#run(&block) ⇒ Object
Run the command processing loop.
-
#set_log_source(log_source) ⇒ Object
Sets the log source that should be used for logging input and output.
-
#stop ⇒ Object
Stop processing user input.
-
#stopped? ⇒ Boolean
Checks to see if the shell has stopped.
-
#tab_complete(str) ⇒ Object
Performs tab completion on the supplied string.
-
#unset_log_source ⇒ Object
Unsets the log source so that logging becomes disabled.
-
#update_prompt(prompt = nil, new_prompt_char = nil) ⇒ Object
Change the input prompt.
Instance Attribute Details
#disable_output ⇒ Object
Whether or not output has been disabled.
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# File 'lib/rex/ui/text/shell.rb', line 254 def disable_output @disable_output end |
#input ⇒ Object
The input handle to read user input from.
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# File 'lib/rex/ui/text/shell.rb', line 258 def input @input end |
#on_command_proc ⇒ Object
Returns the value of attribute on_command_proc.
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# File 'lib/rex/ui/text/shell.rb', line 264 def on_command_proc @on_command_proc end |
#on_print_proc ⇒ Object
Returns the value of attribute on_print_proc.
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# File 'lib/rex/ui/text/shell.rb', line 265 def on_print_proc @on_print_proc end |
#output ⇒ Object
The output handle to write output to.
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# File 'lib/rex/ui/text/shell.rb', line 262 def output @output end |
Instance Method Details
#init_tab_complete ⇒ Object
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# File 'lib/rex/ui/text/shell.rb', line 53 def init_tab_complete if (self.input and self.input.supports_readline) self.input = Input::Readline.new(lambda { |str| tab_complete(str) }) if Readline::HISTORY.length == 0 and histfile and File.exists?(histfile) File.readlines(histfile).each { |e| Readline::HISTORY << e.chomp } self.hist_last_saved = Readline::HISTORY.length end self.input.output = self.output update_prompt(input.prompt) end end |
#init_ui(in_input = nil, in_output = nil) ⇒ Object
Initializes the user interface input/output classes.
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# File 'lib/rex/ui/text/shell.rb', line 70 def init_ui(in_input = nil, in_output = nil) # Initialize the input and output methods self.input = in_input self.output = in_output if (self.input) # Extend the input medium as an input shell if the input medium # isn't intrinsicly a shell. if (self.input.intrinsic_shell? == false) self.input.extend(InputShell) end self.input.output = self.output end update_prompt('') end |
#initialize(prompt, prompt_char = '>', histfile = nil) ⇒ Object
Initializes a shell that has a prompt and can be interacted with.
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# File 'lib/rex/ui/text/shell.rb', line 39 def initialize(prompt, prompt_char = '>', histfile = nil) # Set the stop flag to false self.stop_flag = false self.disable_output = false self.stop_count = 0 # Initialize the prompt self.init_prompt = prompt self.prompt_char = prompt_char self.histfile = histfile self.hist_last_saved = 0 end |
#print(msg = '') ⇒ Object
Prints a raw message to the output handle.
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# File 'lib/rex/ui/text/shell.rb', line 245 def print(msg='') return if (disable_output == true) self.on_print_proc.call(msg) if self.on_print_proc log_output(output.print(msg)) end |
#print_error(msg = '') ⇒ Object
Prints an error message to the output handle.
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# File 'lib/rex/ui/text/shell.rb', line 204 def print_error(msg='') return if (output.nil?) self.on_print_proc.call(msg) if self.on_print_proc # Errors are not subject to disabled output log_output(output.print_error(msg)) end |
#print_good(msg = '') ⇒ Object
Prints a good message to the output handle.
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# File 'lib/rex/ui/text/shell.rb', line 225 def print_good(msg='') return if (disable_output == true) self.on_print_proc.call(msg) if self.on_print_proc log_output(output.print_good(msg)) end |
#print_line(msg = '') ⇒ Object
Prints a line of text to the output handle.
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# File 'lib/rex/ui/text/shell.rb', line 235 def print_line(msg='') return if (disable_output == true) self.on_print_proc.call(msg) if self.on_print_proc log_output(output.print_line(msg)) end |
#print_status(msg = '') ⇒ Object
Prints a status message to the output handle.
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# File 'lib/rex/ui/text/shell.rb', line 215 def print_status(msg='') return if (disable_output == true) self.on_print_proc.call(msg) if self.on_print_proc log_output(output.print_status(msg)) end |
#reset_ui ⇒ Object
Resets the user interface handles.
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# File 'lib/rex/ui/text/shell.rb', line 90 def reset_ui init_ui end |
#run(&block) ⇒ Object
Run the command processing loop.
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# File 'lib/rex/ui/text/shell.rb', line 118 def run(&block) begin while true # If the stop flag was set or we've hit EOF, break out break if (self.stop_flag or self.stop_count > 1) init_tab_complete line = input.pgets log_output(input.prompt) # If a block was passed in, pass the line to it. If it returns true, # break out of the shell loop. if (block) break if (line == nil or block.call(line)) elsif(input.eof? or line == nil) # If you have sessions active, this will give you a shot to exit gravefully # If you really are ambitious, 2 eofs will kick this out self.stop_count += 1 next if(self.stop_count > 1) run_single("quit") else # Otherwise, call what should be an overriden instance method to # process the line. ret = run_single(line) # don't bother saving lines that couldn't be found as a # command, create the file if it doesn't exist if ret and self.histfile File.open(self.histfile, "a+") { |f| f.puts(line) } end self.stop_count = 0 end end # Prevent accidental console quits rescue ::Interrupt output.print("Interrupt: use the 'exit' command to quit\n") retry end end |
#set_log_source(log_source) ⇒ Object
Sets the log source that should be used for logging input and output.
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# File 'lib/rex/ui/text/shell.rb', line 97 def set_log_source(log_source) self.log_source = log_source end |
#stop ⇒ Object
Stop processing user input.
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# File 'lib/rex/ui/text/shell.rb', line 165 def stop self.stop_flag = true end |
#stopped? ⇒ Boolean
Checks to see if the shell has stopped.
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# File 'lib/rex/ui/text/shell.rb', line 172 def stopped? self.stop_flag end |
#tab_complete(str) ⇒ Object
Performs tab completion on the supplied string.
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# File 'lib/rex/ui/text/shell.rb', line 111 def tab_complete(str) return tab_complete_proc(str) if (tab_complete_proc) end |
#unset_log_source ⇒ Object
Unsets the log source so that logging becomes disabled.
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# File 'lib/rex/ui/text/shell.rb', line 104 def unset_log_source set_log_source(nil) end |
#update_prompt(prompt = nil, new_prompt_char = nil) ⇒ Object
Change the input prompt.
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# File 'lib/rex/ui/text/shell.rb', line 179 def update_prompt(prompt = nil, new_prompt_char = nil) if (self.input) if (prompt) new_prompt = self.init_prompt + ' ' + prompt + prompt_char + ' ' else new_prompt = self.prompt || '' end # Save the prompt before any substitutions self.prompt = new_prompt # Set the actual prompt to the saved prompt with any substitutions # or updates from our output driver, be they color or whatever self.input.prompt = self.output.update_prompt(new_prompt) self.prompt_char = new_prompt_char if (new_prompt_char) end end |