package frama-c

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Source file obfuscator_register.ml

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(**************************************************************************)
(*                                                                        *)
(*  This file is part of Frama-C.                                         *)
(*                                                                        *)
(*  Copyright (C) 2007-2025                                               *)
(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
(*         alternatives)                                                  *)
(*                                                                        *)
(*  you can redistribute it and/or modify it under the terms of the GNU   *)
(*  Lesser General Public License as published by the Free Software       *)
(*  Foundation, version 2.1.                                              *)
(*                                                                        *)
(*  It is distributed in the hope that it will be useful,                 *)
(*  but WITHOUT ANY WARRANTY; without even the implied warranty of        *)
(*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *)
(*  GNU Lesser General Public License for more details.                   *)
(*                                                                        *)
(*  See the GNU Lesser General Public License version 2.1                 *)
(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
(*                                                                        *)
(**************************************************************************)

let disable_other_analyzers () =
  if Options.Run.get () then
    let selection =
      State_selection.diff
        (Parameter_state.get_selection ())
        (State_selection.union
           (State_selection.of_list
              (Kernel.CodeOutput.self :: Options.states))
           (* The command-line options that govern the creation of the AST
              must be preserved *)
           (State_selection.with_codependencies Ast.self))
    in
    Project.clear ~selection ()

let () = Cmdline.run_after_configuring_stage disable_other_analyzers

let force_run () =
  if not (Dictionary.is_computed ()) then begin
    let old_printer = Printer.current_printer () in
    Obfuscate.obfuscate ();
    if Options.Dictionary.is_default () then Log.print_delayed Dictionary.pretty
    else begin
      let file = Options.Dictionary.get () in
      try
        let cout = open_out file in
        let fmt = Format.formatter_of_out_channel cout in
        Dictionary.pretty fmt
      with Sys_error _ as exn ->
        Options.error
          "@[cannot generate the dictionary into file `%s':@ %s@]"
          file
          (Printexc.to_string exn)
    end;
    File.pretty_ast ();
    Printer.set_printer old_printer
  end

let force_run =
  Dynamic.register
    ~plugin:"Obfuscator"
    "force_run"
    (Datatype.func Datatype.unit Datatype.unit)
    force_run

let run () =
  if Options.Run.get () then begin
    force_run ();
    Cmdline.bail_out () (* stop Frama-C as specified by the -help message
                           and by the discussion in Gitlab issue #491 *)
  end

let () = Boot.Main.extend run