1 files changed, 47 insertions, 0 deletions
diff --git a/src/util/username.c b/src/util/username.c
new file mode 100644
index 0000000..680161c
--- /dev/null
+++ b/src/util/username.c
@@ -0,0 +1,47 @@
+/*++
+/* NAME
+/*	username 3
+/* SUMMARY
+/*	lookup name of real user
+/* SYNOPSIS
+/*	#include <username.h>
+/*
+/*	const char *username()
+/* DESCRIPTION
+/*	username() jumps whatever system-specific hoops it takes to
+/*	get the name of the user who started the process. The result
+/*	is volatile. Make a copy if it is to be used for an appreciable
+/*	amount of time.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <unistd.h>
+#include <pwd.h>
+
+/* Utility library. */
+
+#include "username.h"
+
+/* username - get name of user */
+
+const char *username(void)
+{
+    uid_t   uid;
+    struct passwd *pwd;
+
+    uid = getuid();
+    if ((pwd = getpwuid(uid)) == 0)
+	return (0);
+    return (pwd->pw_name);
+}