Initial revision

1 files changed, 138 insertions, 0 deletions

diff --git a/modules/pam_unix/pam_unix_sess.c b/modules/pam_unix/pam_unix_sess.c
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+++ b/modules/pam_unix/pam_unix_sess.c
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+/*
+ * Copyright Alexander O. Yuriev, 1996.  All rights reserved.
+ * Copyright Jan Rêkorajski, 1999.  All rights reserved.
+ *
+ * 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, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 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.
+ * 
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions.  (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ * 
+ * THIS SOFTWARE IS PROVIDED ``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 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.
+ */
+
+#ifdef linux
+#define _GNU_SOURCE
+#include <features.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* indicate the following groups are defined */
+
+#define PAM_SM_SESSION
+
+#include <security/_pam_macros.h>
+#include <security/pam_modules.h>
+
+#ifndef LINUX_PAM
+#include <security/pam_appl.h>
+#endif				/* LINUX_PAM */
+
+#include "support.h"
+
+/*
+ * PAM framework looks for these entry-points to pass control to the
+ * session module.
+ */
+
+PAM_EXTERN int pam_sm_open_session(pam_handle_t * pamh, int flags,
+				   int argc, const char **argv)
+{
+	char *user_name, *service;
+	unsigned int ctrl;
+	int retval;
+
+	D(("called."));
+
+	ctrl = _set_ctrl(flags, NULL, argc, argv);
+
+	retval = pam_get_item(pamh, PAM_USER, (void *) &user_name);
+	if (user_name == NULL || retval != PAM_SUCCESS) {
+		_log_err(LOG_CRIT, "open_session - error recovering username");
+		return PAM_SESSION_ERR;		/* How did we get authenticated with
+						   no username?! */
+	}
+	retval = pam_get_item(pamh, PAM_SERVICE, (void *) &service);
+	if (service == NULL || retval != PAM_SUCCESS) {
+		_log_err(LOG_CRIT, "open_session - error recovering service");
+		return PAM_SESSION_ERR;
+	}
+	_log_err(LOG_INFO, "(%s) session opened for user %s by %s(uid=%d)"
+		 ,service, user_name
+		 ,PAM_getlogin() == NULL ? "" : PAM_getlogin(), getuid());
+
+	return PAM_SUCCESS;
+}
+
+PAM_EXTERN int pam_sm_close_session(pam_handle_t * pamh, int flags,
+				    int argc, const char **argv)
+{
+	char *user_name, *service;
+	unsigned int ctrl;
+	int retval;
+
+	D(("called."));
+
+	ctrl = _set_ctrl(flags, NULL, argc, argv);
+
+	retval = pam_get_item(pamh, PAM_USER, (void *) &user_name);
+	if (user_name == NULL || retval != PAM_SUCCESS) {
+		_log_err(LOG_CRIT, "close_session - error recovering username");
+		return PAM_SESSION_ERR;		/* How did we get authenticated with
+						   no username?! */
+	}
+	retval = pam_get_item(pamh, PAM_SERVICE, (void *) &service);
+	if (service == NULL || retval != PAM_SUCCESS) {
+		_log_err(LOG_CRIT, "close_session - error recovering service");
+		return PAM_SESSION_ERR;
+	}
+	_log_err(LOG_INFO, "(%s) session closed for user %s"
+		 ,service, user_name);
+
+	return PAM_SUCCESS;
+}
+
+/* static module data */
+#ifdef PAM_STATIC
+struct pam_module _pam_unix_session_modstruct = {
+    "pam_unix_session",
+    NULL,
+    NULL,
+    NULL,
+    pam_sm_open_session,
+    pam_sm_close_session,
+    NULL,
+};
+#endif
+