Rename C++ header files to .hpp

[lttng-tools.git] / src / common / compat / getenv.hpp

diff --git a/src/common/compat/getenv.hpp b/src/common/compat/getenv.hpp
new file mode 100644 (file)
index 0000000..7a31fef
--- /dev/null
+++ b/src/common/compat/getenv.hpp
@@ -0,0 +1,33 @@
+#ifndef _COMPAT_GETENV_H
+#define _COMPAT_GETENV_H
+
+/*
+ * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <common/error.hpp>
+
+static inline
+int lttng_is_setuid_setgid(void)
+{
+       return geteuid() != getuid() || getegid() != getgid();
+}
+
+static inline
+char *lttng_secure_getenv(const char *name)
+{
+       if (lttng_is_setuid_setgid()) {
+               WARN("Getting environment variable '%s' from setuid/setgid binary refused for security reasons.",
+                       name);
+               return NULL;
+       }
+       return getenv(name);
+}
+
+#endif /* _COMPAT_GETENV_H */