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+/*-
+ * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2004-2007 Dag-Erling Smørgrav
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * Network Associates Laboratories, 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: pam_setenv.c 408 2007-12-21 11:36:24Z des $
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+/*
+ * OpenPAM extension
+ *
+ * Set the value of an environment variable
+ * Mirrors setenv(3)
+ */
+
+int
+pam_setenv(pam_handle_t *pamh,
+ const char *name,
+ const char *value,
+ int overwrite)
+{
+ char *env;
+ int r;
+
+ ENTER();
+ if (pamh == NULL)
+ RETURNC(PAM_SYSTEM_ERR);
+
+ /* sanity checks */
+ if (name == NULL || value == NULL || strchr(name, '=') != NULL)
+ RETURNC(PAM_SYSTEM_ERR);
+
+ /* is it already there? */
+ if (!overwrite && openpam_findenv(pamh, name, strlen(name)) >= 0)
+ RETURNC(PAM_SUCCESS);
+
+ /* set it... */
+ if (asprintf(&env, "%s=%s", name, value) < 0)
+ RETURNC(PAM_BUF_ERR);
+ r = pam_putenv(pamh, env);
+ FREE(env);
+ RETURNC(r);
+}
+
+/*
+ * Error codes:
+ *
+ * =pam_putenv
+ * PAM_SYSTEM_ERR
+ * PAM_BUF_ERR
+ */
+
+/**
+ * The =pam_setenv function sets a environment variable.
+ * Its semantics are similar to those of =setenv, but it modifies the PAM
+ * context's environment list instead of the application's.
+ *
+ * >pam_getenv
+ * >pam_getenvlist
+ * >pam_putenv
+ */
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