1 files changed, 123 insertions, 0 deletions
diff --git a/src/openvpn/env_set.h b/src/openvpn/env_set.h
new file mode 100644
index 0000000..f73dea6
--- /dev/null
+++ b/src/openvpn/env_set.h
@@ -0,0 +1,123 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2021 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef ENV_SET_H
+#define ENV_SET_H
+
+#include "argv.h"
+#include "basic.h"
+#include "buffer.h"
+#include "common.h"
+
+/*
+ * Handle environmental variable lists
+ */
+
+struct env_item {
+    char *string;
+    struct env_item *next;
+};
+
+struct env_set {
+    struct gc_arena *gc;
+    struct env_item *list;
+};
+
+/* set/delete environmental variable */
+void setenv_str_ex(struct env_set *es,
+                   const char *name,
+                   const char *value,
+                   const unsigned int name_include,
+                   const unsigned int name_exclude,
+                   const char name_replace,
+                   const unsigned int value_include,
+                   const unsigned int value_exclude,
+                   const char value_replace);
+
+void setenv_counter(struct env_set *es, const char *name, counter_type value);
+
+void setenv_int(struct env_set *es, const char *name, int value);
+
+void setenv_long_long(struct env_set *es, const char *name, long long value);
+
+void setenv_str(struct env_set *es, const char *name, const char *value);
+
+void setenv_str_safe(struct env_set *es, const char *name, const char *value);
+
+void setenv_del(struct env_set *es, const char *name);
+
+/**
+ * Store the supplied name value pair in the env_set.  If the variable with the
+ * supplied name  already exists, append _N to the name, starting at N=1.
+ */
+void setenv_str_incr(struct env_set *es, const char *name, const char *value);
+
+void setenv_int_i(struct env_set *es, const char *name, const int value, const int i);
+
+void setenv_str_i(struct env_set *es, const char *name, const char *value, const int i);
+
+/* struct env_set functions */
+
+struct env_set *env_set_create(struct gc_arena *gc);
+
+void env_set_destroy(struct env_set *es);
+
+bool env_set_del(struct env_set *es, const char *str);
+
+void env_set_add(struct env_set *es, const char *str);
+
+const char *env_set_get(const struct env_set *es, const char *name);
+
+void env_set_print(int msglevel, const struct env_set *es);
+
+void env_set_inherit(struct env_set *es, const struct env_set *src);
+
+/* returns true if environmental variable name starts with 'password' */
+static inline bool
+is_password_env_var(const char *str)
+{
+    return (strncmp(str, "password", 8) == 0);
+}
+
+/* returns true if environmental variable safe to print to log */
+static inline bool
+env_safe_to_print(const char *str)
+{
+#ifndef UNSAFE_DEBUG
+    if (is_password_env_var(str))
+    {
+        return false;
+    }
+#endif
+    return true;
+}
+
+/* returns true if environmental variable may be passed to an external program */
+bool env_allowed(const char *str);
+
+const char **make_env_array(const struct env_set *es,
+                            const bool check_allowed,
+                            struct gc_arena *gc);
+
+#endif /* ifndef ENV_SET_H */