Vendor import of OpenPAM Calamite

2 files changed, 188 insertions, 0 deletions

diff --git a/contrib/openpam/bin/su/Makefile b/contrib/openpam/bin/su/Makefile
new file mode 100644
index 0000000..40533bb
--- /dev/null
+++ b/contrib/openpam/bin/su/Makefile
@@ -0,0 +1,44 @@
+#-
+# Copyright (c) 2002 Networks Associates Technologies, Inc.
+# All rights reserved.
+#
+# This software was developed for the FreeBSD Project by ThinkSec AS and
+# NAI Labs, the Security Research Division of Network Associates, Inc.
+# under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
+# DARPA CHATS research program.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote
+#    products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $Id$
+#
+
+PROG		 = su
+WARNS		?= 4
+CFLAGS		+= -I${.CURDIR}/../../include
+DPADD		 = ${.OBJDIR}/../../lib/libpam.so
+LDADD		 = -L${.OBJDIR}/../../lib -R${.OBJDIR}/../../lib -lpam
+NOMAN		 = YES
+
+.include <bsd.prog.mk>
diff --git a/contrib/openpam/bin/su/su.c b/contrib/openpam/bin/su/su.c
new file mode 100644
index 0000000..27b6002
--- /dev/null
+++ b/contrib/openpam/bin/su/su.c
@@ -0,0 +1,144 @@
+/*-
+ * Copyright (c) 2002 Networks Associates Technologies, Inc.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * NAI Labs, the Security Research Division of Network Associates, Inc.
+ * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
+ * DARPA CHATS research program.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ */
+
+#include <sys/param.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include <security/pam_appl.h>
+#include <security/openpam.h>
+
+static pam_handle_t *pamh;
+static struct pam_conv pamc;
+
+static void
+usage(void)
+{
+
+	fprintf(stderr, "Usage: su [login [args]]\n");
+	exit(1);
+}
+
+static int
+check(const char *func, int pam_err)
+{
+
+	if (pam_err == PAM_SUCCESS || pam_err == PAM_NEW_AUTHTOK_REQD)
+		return pam_err;
+	openlog("su", LOG_CONS, LOG_AUTH);
+	syslog(LOG_ERR, "%s(): %s", func, pam_strerror(pamh, pam_err));
+	errx(1, "Sorry.");
+}
+
+int
+main(int argc, char *argv[])
+{
+	char hostname[MAXHOSTNAMELEN];
+	const char *user, *tty;
+	struct passwd *pwd;
+	int o, status;
+	pid_t pid;
+
+	while ((o = getopt(argc, argv, "h")) != -1)
+		switch (o) {
+		case 'h':
+		default:
+			usage();
+		}
+
+	argc -= optind;
+	argv += optind;
+
+	/* initialize PAM */
+	pamc.conv = &openpam_ttyconv;
+	pam_start("su", argc ? *argv : "root", &pamc, &pamh);
+
+	/* set some items */
+	gethostname(hostname, sizeof(hostname));
+	check("pam_set_item", pam_set_item(pamh, PAM_RHOST, hostname));
+	user = getlogin();
+	check("pam_set_item", pam_set_item(pamh, PAM_RUSER, user));
+	tty = ttyname(STDERR_FILENO);
+	check("pam_set_item", pam_set_item(pamh, PAM_TTY, tty));
+
+	/* authenticate the applicant */
+	check("pam_authenticate", pam_authenticate(pamh, 0));
+	if (check("pam_acct_mgmt", pam_acct_mgmt(pamh, 0)) ==
+	    PAM_NEW_AUTHTOK_REQD)
+		check("pam_chauthtok",
+		    pam_chauthtok(pamh, PAM_CHANGE_EXPIRED_AUTHTOK));
+
+	/* establish the requested credentials */
+	check("pam_setcred", pam_setcred(pamh, PAM_ESTABLISH_CRED));
+
+	/* authentication succeeded; open a session */
+	check("pam_open_session", pam_open_session(pamh, 0));
+
+	if (initgroups(pwd->pw_name, pwd->pw_gid) == -1)
+		err(1, "initgroups()");
+	if (setuid(pwd->pw_uid) == -1)
+		err(1, "setuid()");
+
+	/* XXX export environment variables */
+
+	switch ((pid = fork())) {
+	case -1:
+		err(1, "fork()");
+	case 0:
+		/* child: start a shell */
+		*argv = pwd->pw_shell;
+		execvp(*argv, argv);
+		err(1, "execvp()");
+	default:
+		/* parent: wait for child to exit */
+		waitpid(pid, &status, 0);
+		if (WIFEXITED(status))
+			status = WEXITSTATUS(status);
+		else
+			status = 1;
+	}
+
+	/* close the session and release PAM resources */
+	check("pam_close_session", pam_close_session(pamh, 0));
+	check("pam_end", pam_end(pamh, 0));
+
+	exit(status);
+}