X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fcompat%2Fgetenv.hpp;fp=src%2Fcommon%2Fcompat%2Fgetenv.hpp;h=7a31fef9e0c2614481c52e1f5df11349d7fc4f9c;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hp=0000000000000000000000000000000000000000;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c;p=lttng-tools.git

diff --git a/src/common/compat/getenv.hpp b/src/common/compat/getenv.hpp
new file mode 100644
index 000000000..7a31fef9e
--- /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 */