From: Cody Maloney <cmaloney@theoreticalchaos.com>
To: util-linux@vger.kernel.org
Cc: mitr@redhat.com, Cody Maloney <cmaloney@theoreticalchaos.com>
Subject: [PATCH v3 4/4] chfn: Add libuser support
Date: Wed, 6 Feb 2013 23:22:21 -0700 [thread overview]
Message-ID: <1360218141-4463-5-git-send-email-cmaloney@theoreticalchaos.com> (raw)
In-Reply-To: <1360218141-4463-1-git-send-email-cmaloney@theoreticalchaos.com>
Signed-off-by: Cody Maloney <cmaloney@theoreticalchaos.com>
---
login-utils/chfn.c | 27 +++++++++++++++++++++++----
1 file changed, 23 insertions(+), 4 deletions(-)
diff --git a/login-utils/chfn.c b/login-utils/chfn.c
index 7c9af84..7ea3f3e 100644
--- a/login-utils/chfn.c
+++ b/login-utils/chfn.c
@@ -1,6 +1,7 @@
/*
* chfn.c -- change your finger information
* (c) 1994 by salvatore valente <svalente@athena.mit.edu>
+ * (c) 2012 by Cody Maloney <cmaloney@theoreticalchaos.com>
*
* this program is free software. you can redistribute it and
* modify it under the terms of the gnu general public license.
@@ -31,7 +32,6 @@
#include <sys/types.h>
#include <unistd.h>
-#include "auth.h"
#include "c.h"
#include "env.h"
#include "closestream.h"
@@ -47,6 +47,13 @@
# include "selinux_utils.h"
#endif
+#ifdef HAVE_LIBUSER
+# include <libuser/user.h>
+# include "libuser.h"
+#else
+# include "auth.h"
+#endif
+
static char buf[1024];
struct finfo {
@@ -149,17 +156,24 @@ int main(int argc, char **argv)
}
#endif
- /* Reality check */
- if (uid != 0 && uid != oldf.pw->pw_uid) {
+#ifdef HAVE_LIBUSER
+ /* If we're setuid and not really root, disallow the password change. */
+ if (geteuid() != getuid() && uid != pw->pw_uid) {
+#else
+ if (uid != 0 && uid != pw->pw_uid) {
+#endif
errno = EACCES;
- err(EXIT_FAILURE, NULL);
+ err(EXIT_FAILURE, _("running UID doesn't match UID of user we're "
+ "altering, change denied")););
}
printf(_("Changing finger information for %s.\n"), oldf.username);
+#ifndef HAVE_LIBUSER
if(!auth_pam("chfn", uid, oldf.username)) {
return EXIT_FAILURE;
}
+#endif
if (interactive)
ask_info(&oldf, &newf);
@@ -445,9 +459,14 @@ static int save_new_data(struct finfo *pinfo)
gecos[len] = 0;
}
+#ifdef HAVE_LIBUSER
+ if(set_value_libuser("chfn", pinfo->pw->pw_name, pinfo->pw->pw_uid,
+ LU_GECOS, gecos)) {
+#else /* HAVE_LIBUSER */
/* write the new struct passwd to the passwd file. */
pinfo->pw->pw_gecos = gecos;
if (setpwnam(pinfo->pw) < 0) {
+#endif
warn("setpwnam");
printf(_
("Finger information *NOT* changed. Try again later.\n"));
--
1.8.1
next prev parent reply other threads:[~2013-02-07 6:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-07 6:22 [PATCH v3 0/4] Add support for using libuser to chsh and chfn Cody Maloney
2013-02-07 6:22 ` [PATCH v3 1/4] chsh-chfn: Add flag for enabling/disabling libuser support Cody Maloney
2013-02-13 12:51 ` Karel Zak
2013-02-07 6:22 ` [PATCH v3 2/4] chsh-chfn: Move pam auth to its own function, factoring out common code Cody Maloney
2013-02-13 12:53 ` Karel Zak
2013-02-13 20:33 ` Cody Maloney
2013-02-07 6:22 ` [PATCH v3 3/4] chsh: Add libuser support Cody Maloney
2013-02-13 12:55 ` Karel Zak
2013-02-07 6:22 ` Cody Maloney [this message]
2013-02-13 13:15 ` [PATCH v3 4/4] chfn: " Karel Zak
2013-02-13 20:38 ` Cody Maloney
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