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safe/evil.scm, safe/README, modules/README, modules/main, modules/module-0.scm, modules/module-1.scm, modules/module-2.scm: Minor cleanup. * README: Added intro stuff, restructured a bit. * box-dynamic/README, box-module/README, box/README: Cleanup and restructuring. * box-dynamic-module/box-mixed.scm: New file, demonstrating usage of extension library functionality, but without exporting procedures from the library. Thanks to Thomas Wawrzinek for the idea and example code! * box-dynamic-module/box-module.scm: Add comments, export make-box, box-ref, box-set!. * box-dynamic-module/README: Integrate new module (box-mixed), restructure and cleanup a bit. |
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| evil.scm | ||
| Makefile.am | ||
| README | ||
| safe | ||
| untrusted.scm | ||
-*- outline -*- * Overview This directory includes examples which show how to create and use safe environments for safe (sand-boxed) execution of Scheme programs. *Note* that the files in this directory are only suitable for demonstration purposes, if you have to implement safe evaluation mechanisms in important environments, you will have to do more than shown here -- for example disabling input/output operations. The descriptions below assume that you have a working copy of Guile installed and available with the standard installation prefix `/usr/local'. * Included Examples ** safe The main program, which executes the Scheme code in a file given on the command line in a safe environment. The following command will do that with the file `untrusted.scm' (see below.) $ ./safe untrusted.scm or guile -s safe untrusted.scm ** untrusted.scm This file contains some Scheme code, which will be executed in a safe environment by the `safe' script. ** evil.scm This file also contains Scheme code, but it tries to do evil things. Evaluating this with the `safe' script will abort on those evil actions.