1 files changed, 110 insertions, 0 deletions
diff --git a/lib/libpam/pam_getenvlist.c b/lib/libpam/pam_getenvlist.c
new file mode 100644
index 0000000..06c003f
--- /dev/null
+++ b/lib/libpam/pam_getenvlist.c
@@ -0,0 +1,110 @@
+/*-
+ * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2004-2011 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_getenvlist.c 437 2011-09-13 12:00:13Z des $
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+/*
+ * XSSO 4.2.1
+ * XSSO 6 page 45
+ *
+ * Returns a list of all the PAM environment variables
+ */
+
+char **
+pam_getenvlist(pam_handle_t *pamh)
+{
+	char **envlist;
+	int i;
+
+	ENTER();
+	if (pamh == NULL)
+		RETURNP(NULL);
+	envlist = malloc(sizeof(char *) * (pamh->env_count + 1));
+	if (envlist == NULL) {
+		openpam_log(PAM_LOG_ERROR, "%s",
+			pam_strerror(pamh, PAM_BUF_ERR));
+		RETURNP(NULL);
+	}
+	for (i = 0; i < pamh->env_count; ++i) {
+		if ((envlist[i] = strdup(pamh->env[i])) == NULL) {
+			while (i) {
+				--i;
+				FREE(envlist[i]);
+			}
+			FREE(envlist);
+			openpam_log(PAM_LOG_ERROR, "%s",
+				pam_strerror(pamh, PAM_BUF_ERR));
+			RETURNP(NULL);
+		}
+	}
+	envlist[i] = NULL;
+	RETURNP(envlist);
+}
+
+/**
+ * The =pam_getenvlist function returns a copy of the given PAM context's
+ * environment list as a pointer to an array of strings.
+ * The last element in the array is =NULL.
+ * The pointer is suitable for assignment to {Va environ}.
+ *
+ * The array and the strings it lists are allocated using =malloc, and
+ * should be released using =free after use:
+ *
+ *     char **envlist, **env;
+ *
+ *     envlist = environ;
+ *     environ = pam_getenvlist(pamh);
+ *     \/\* do something nifty \*\/
+ *     for (env = environ; *env != NULL; env++)
+ *         free(*env);
+ *     free(environ);
+ *     environ = envlist;
+ *
+ * >environ 7
+ * >pam_getenv
+ * >pam_putenv
+ * >pam_setenv
+ */