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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#include <caml/config.h>
#ifdef HAS_UNISTD
#include <unistd.h>
#endif
#include <sys/types.h>
#ifdef HAS_GETAUXVAL
#include <sys/auxv.h>
#endif
#include <caml/mlvalues.h>
#include <caml/alloc.h>
extern char ** environ;
CAMLprim value caml_unix_environment_unsafe(value unit)
{
if (environ != NULL) {
return caml_copy_string_array((const char**)environ);
} else {
return Atom(0);
}
}
static char **secure_environ(void)
{
#if defined(HAS_GETAUXVAL) && defined(AT_SECURE)
if (!getauxval(AT_SECURE))
return environ;
else
return NULL;
#elif defined(HAS_ISSETUGID)
if (!issetugid ())
return environ;
else
return NULL;
#else
if (geteuid () == getuid () && getegid () == getgid ())
return environ;
else
return NULL;
#endif
}
CAMLprim value caml_unix_environment(value unit)
{
char **e = secure_environ();
if (e != NULL) {
return caml_copy_string_array((const char**)e);
} else {
return Atom(0);
}
}
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