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-rw-r--r--src/util/username.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/util/username.c b/src/util/username.c
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+/*++
+/* 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);
+}