Added SILC Environment manipulation API.

[silc.git] / lib / silcutil / silcenv.c

diff --git a/lib/silcutil/silcenv.c b/lib/silcutil/silcenv.c
new file mode 100644 (file)
index 0000000..fda4849
--- /dev/null
+++ b/lib/silcutil/silcenv.c
@@ -0,0 +1,68 @@
+/*
+
+  silcenv.c
+
+  Author: Pekka Riikonen <priikone@silcnet.org>
+
+  Copyright (C) 2007 Pekka Riikonen
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program 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 General Public License for more details.
+
+*/
+
+#include "silc.h"
+
+/* Set environment variable with value */
+
+SilcBool silc_setenv(const char *variable, const char *value)
+{
+  SILC_LOG_DEBUG(("Set %s=%s", variable, value));
+#if defined(HAVE_SETENV)
+  return setenv(variable, value, TRUE) == 0;
+#elif defined (HAVE_PUTENV)
+  char tmp[1024];
+  silc_snprintf(tmp, sizeof(tmp), "%s=%s", variable, value);
+  return putenv(tmp) == 0;
+#endif /* HAVE_SETENV */
+  return FALSE;
+}
+
+/* Get environment variable value */
+
+const char *silc_getenv(const char *variable)
+{
+  SILC_LOG_DEBUG(("Get %s value", variable));
+#if defined(HAVE_GETENV)
+  return (const char *)getenv(variable);
+#endif /* HAVE_GETENV */
+  return NULL;
+}
+
+/* Unset environment variable */
+
+SilcBool silc_unsetenv(const char *variable)
+{
+  SILC_LOG_DEBUG(("Unset %s value", variable));
+#if defined(HAVE_UNSETENV)
+  return unsetenv(variable) == 0;
+#endif /* HAVE_GETENV */
+  return FALSE;
+}
+
+/* Clear environment */
+
+SilcBool silc_clearenv(void)
+{
+  SILC_LOG_DEBUG(("Clear allenvironment variables"));
+#if defined(HAVE_CLEARENV)
+  return clearenv() == 0;
+#endif /* HAVE_GETENV */
+  return FALSE;
+}