core: New API functions gpgrt_getenv and gpgrt_setenv.

* src/gpg-error.h.in (gpgrt_getenv, gpgrt_setenv): New.
(gpgrt_unsetenv): New macro.
* src/gpg-error.vers, src/gpg-error.def.in: Add them.
* src/visibility.c (gpgrt_getenv, gpgrt_setenv): New.
* src/visibility.h: Add them.
* src/sysutils.c: Include string.h and on Windows windows.h.
(_gpgrt_getenv): New.
(_gpgrt_setenv): New.
--

These functions are wrappers to cope with Windows problems.  The code
is similar to what we have in GnuPG but not identical.

Requires better testing.

Signed-off-by: Werner Koch <wk@gnupg.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gpg-error.h.in b/src/gpg-error.h.in
index 35027d6..3d9c914 100644
--- a/src/gpg-error.h.in
+++ b/src/gpg-error.h.in
@@ -445,6 +445,19 @@ char *gpgrt_strconcat (const char *s1, ...) GPGRT_ATTR_SENTINEL(0);
 void gpgrt_free (void *a);
 
 
+/*
+ * System specific function wrappers.
+ */
+
+/* A getenv replacement which mallocs the returned string.  */
+char *gpgrt_getenv (const char *name);
+
+/* A setenv and a unsetenv replacement.*/
+int gpgrt_setenv (const char *name, const char *value, int overwrite);
+#define gpgrt_unsetenv(n) gpgrt_setenv ((n), NULL, 1)
+
+
+
 
 /*
  * Lock functions.