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/*
* 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 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef PROXY_H
#define PROXY_H
#include "buffer.h"
#include "misc.h"
/* HTTP CONNECT authentication methods */
#define HTTP_AUTH_NONE 0
#define HTTP_AUTH_BASIC 1
#define HTTP_AUTH_DIGEST 2
#define HTTP_AUTH_NTLM 3
#define HTTP_AUTH_NTLM2 4
#define HTTP_AUTH_N 5 /* number of HTTP_AUTH methods */
struct http_custom_header {
const char *name;
const char *content;
};
#define MAX_CUSTOM_HTTP_HEADER 10
struct http_proxy_options {
const char *server;
const char *port;
#define PAR_NO 0 /* don't support any auth retries */
#define PAR_ALL 1 /* allow all proxy auth protocols */
#define PAR_NCT 2 /* disable cleartext proxy auth protocols */
int auth_retry;
const char *auth_method_string;
const char *auth_file;
const char *http_version;
const char *user_agent;
struct http_custom_header custom_headers[MAX_CUSTOM_HTTP_HEADER];
bool inline_creds;
};
struct http_proxy_options_simple {
const char *server;
const char *port;
int auth_retry;
};
struct http_proxy_info {
bool defined;
int auth_method;
struct http_proxy_options options;
struct user_pass up;
char *proxy_authenticate;
bool queried_creds;
};
struct http_proxy_options *init_http_proxy_options_once(struct http_proxy_options **hpo,
struct gc_arena *gc);
struct http_proxy_info *http_proxy_new(const struct http_proxy_options *o);
void http_proxy_close(struct http_proxy_info *hp);
bool establish_http_proxy_passthru(struct http_proxy_info *p,
socket_descriptor_t sd, /* already open to proxy */
const char *host, /* openvpn server remote */
const char *port, /* openvpn server port */
struct event_timeout *server_poll_timeout,
struct buffer *lookahead,
volatile int *signal_received);
uint8_t *make_base64_string2(const uint8_t *str, int str_len, struct gc_arena *gc);
uint8_t *make_base64_string(const uint8_t *str, struct gc_arena *gc);
#endif /* PROXY_H */
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