Put ssh back into the repository
Change-Id: I23324372188fa6ed3f93a32b84365f5df6367590
diff --git a/auth-shadow.c b/auth-shadow.c
new file mode 100644
index 0000000..2190916
--- /dev/null
+++ b/auth-shadow.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2004 Darren Tucker. 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, 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
+ */
+
+#include "includes.h"
+
+#if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE)
+#include <shadow.h>
+#include <stdarg.h>
+#include <string.h>
+#include <time.h>
+
+#include "key.h"
+#include "hostfile.h"
+#include "auth.h"
+#include "buffer.h"
+#include "log.h"
+
+#ifdef DAY
+# undef DAY
+#endif
+#define DAY (24L * 60 * 60) /* 1 day in seconds */
+
+extern Buffer loginmsg;
+
+/*
+ * For the account and password expiration functions, we assume the expiry
+ * occurs the day after the day specified.
+ */
+
+/*
+ * Check if specified account is expired. Returns 1 if account is expired,
+ * 0 otherwise.
+ */
+int
+auth_shadow_acctexpired(struct spwd *spw)
+{
+ time_t today;
+ int daysleft;
+ char buf[256];
+
+ today = time(NULL) / DAY;
+ daysleft = spw->sp_expire - today;
+ debug3("%s: today %d sp_expire %d days left %d", __func__, (int)today,
+ (int)spw->sp_expire, daysleft);
+
+ if (spw->sp_expire == -1) {
+ debug3("account expiration disabled");
+ } else if (daysleft < 0) {
+ logit("Account %.100s has expired", spw->sp_namp);
+ return 1;
+ } else if (daysleft <= spw->sp_warn) {
+ debug3("account will expire in %d days", daysleft);
+ snprintf(buf, sizeof(buf),
+ "Your account will expire in %d day%s.\n", daysleft,
+ daysleft == 1 ? "" : "s");
+ buffer_append(&loginmsg, buf, strlen(buf));
+ }
+
+ return 0;
+}
+
+/*
+ * Checks password expiry for platforms that use shadow passwd files.
+ * Returns: 1 = password expired, 0 = password not expired
+ */
+int
+auth_shadow_pwexpired(Authctxt *ctxt)
+{
+ struct spwd *spw = NULL;
+ const char *user = ctxt->pw->pw_name;
+ char buf[256];
+ time_t today;
+ int daysleft, disabled = 0;
+
+ if ((spw = getspnam((char *)user)) == NULL) {
+ error("Could not get shadow information for %.100s", user);
+ return 0;
+ }
+
+ today = time(NULL) / DAY;
+ debug3("%s: today %d sp_lstchg %d sp_max %d", __func__, (int)today,
+ (int)spw->sp_lstchg, (int)spw->sp_max);
+
+#if defined(__hpux) && !defined(HAVE_SECUREWARE)
+ if (iscomsec()) {
+ struct pr_passwd *pr;
+
+ pr = getprpwnam((char *)user);
+
+ /* Test for Trusted Mode expiry disabled */
+ if (pr != NULL && pr->ufld.fd_min == 0 &&
+ pr->ufld.fd_lifetime == 0 && pr->ufld.fd_expire == 0 &&
+ pr->ufld.fd_pw_expire_warning == 0 &&
+ pr->ufld.fd_schange != 0)
+ disabled = 1;
+ }
+#endif
+
+ /* TODO: check sp_inact */
+ daysleft = spw->sp_lstchg + spw->sp_max - today;
+ if (disabled) {
+ debug3("password expiration disabled");
+ } else if (spw->sp_lstchg == 0) {
+ logit("User %.100s password has expired (root forced)", user);
+ return 1;
+ } else if (spw->sp_max == -1) {
+ debug3("password expiration disabled");
+ } else if (daysleft < 0) {
+ logit("User %.100s password has expired (password aged)", user);
+ return 1;
+ } else if (daysleft <= spw->sp_warn) {
+ debug3("password will expire in %d days", daysleft);
+ snprintf(buf, sizeof(buf),
+ "Your password will expire in %d day%s.\n", daysleft,
+ daysleft == 1 ? "" : "s");
+ buffer_append(&loginmsg, buf, strlen(buf));
+ }
+
+ return 0;
+}
+#endif /* USE_SHADOW && HAS_SHADOW_EXPIRE */