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openconnect-internal.h
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openconnect-internal.h
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/*
* OpenConnect (SSL + DTLS) VPN client
*
* Copyright © 2008-2012 Intel Corporation.
* Copyright © 2008 Nick Andrew <nick@nick-andrew.net>
*
* Author: David Woodhouse <dwmw2@infradead.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to:
*
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __OPENCONNECT_INTERNAL_H__
#define __OPENCONNECT_INTERNAL_H__
#include "openconnect.h"
#include <openssl/ssl.h>
#include <zlib.h>
#include <stdint.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef LIBPROXY_HDR
#include LIBPROXY_HDR
#endif
#ifdef ENABLE_NLS
#include <locale.h>
#include <libintl.h>
#define _(s) dgettext("openconnect", s)
#else
#define _(s) s
#endif
#define N_(s) s
#define SHA1_SIZE 20
/****************************************************************************/
struct pkt {
int len;
struct pkt *next;
unsigned char hdr[8];
unsigned char data[];
};
struct vpn_option {
char *option;
char *value;
struct vpn_option *next;
};
#define KA_NONE 0
#define KA_DPD 1
#define KA_DPD_DEAD 2
#define KA_KEEPALIVE 3
#define KA_REKEY 4
struct keepalive_info {
int dpd;
int keepalive;
int rekey;
time_t last_rekey;
time_t last_tx;
time_t last_rx;
time_t last_dpd;
};
struct split_include {
char *route;
struct split_include *next;
};
#define RECONNECT_INTERVAL_MIN 10
#define RECONNECT_INTERVAL_MAX 100
#define CERT_TYPE_UNKNOWN 0
#define CERT_TYPE_PEM 1
#define CERT_TYPE_PKCS12 2
#define CERT_TYPE_TPM 3
struct openconnect_info {
char *redirect_url;
char *csd_token;
char *csd_ticket;
char *csd_stuburl;
char *csd_starturl;
char *csd_waiturl;
char *csd_preurl;
char *csd_scriptname;
#ifdef LIBPROXY_HDR
pxProxyFactory *proxy_factory;
#endif
char *proxy_type;
char *proxy;
int proxy_port;
const char *localname;
char *hostname;
int port;
char *urlpath;
int cert_expire_warning;
const char *cert;
const char *sslkey;
X509 *cert_x509;
int cert_type;
char *cert_password;
const char *cafile;
const char *servercert;
const char *xmlconfig;
char xmlsha1[(SHA1_SIZE * 2) + 1];
char *username;
char *password;
char *authgroup;
int nopasswd;
char *dtls_ciphers;
uid_t uid_csd;
char *csd_wrapper;
int uid_csd_given;
int no_http_keepalive;
X509 *peer_cert;
char *cookie; /* Pointer to within cookies list */
struct vpn_option *cookies;
struct vpn_option *cstp_options;
struct vpn_option *dtls_options;
SSL_CTX *https_ctx;
SSL *https_ssl;
struct keepalive_info ssl_times;
int owe_ssl_dpd_response;
struct pkt *deflate_pkt;
struct pkt *current_ssl_pkt;
struct pkt *pending_deflated_pkt;
z_stream inflate_strm;
uint32_t inflate_adler32;
z_stream deflate_strm;
uint32_t deflate_adler32;
int disable_ipv6;
int reconnect_timeout;
int reconnect_interval;
int dtls_attempt_period;
time_t new_dtls_started;
SSL_CTX *dtls_ctx;
SSL *dtls_ssl;
SSL *new_dtls_ssl;
SSL_SESSION *dtls_session;
struct keepalive_info dtls_times;
unsigned char dtls_session_id[32];
unsigned char dtls_secret[48];
char *dtls_cipher;
const char *vpnc_script;
int script_tun;
char *ifname;
int mtu;
const char *banner;
const char *vpn_addr;
const char *vpn_netmask;
const char *vpn_addr6;
const char *vpn_netmask6;
const char *vpn_dns[3];
const char *vpn_nbns[3];
const char *vpn_domain;
const char *vpn_proxy_pac;
struct split_include *split_includes;
struct split_include *split_excludes;
int select_nfds;
fd_set select_rfds;
fd_set select_wfds;
fd_set select_efds;
#ifdef __sun__
int ip_fd;
int ip6_fd;
#endif
int tun_fd;
int ssl_fd;
int dtls_fd;
int new_dtls_fd;
int cancel_fd;
struct pkt *incoming_queue;
struct pkt *outgoing_queue;
int outgoing_qlen;
int max_qlen;
socklen_t peer_addrlen;
struct sockaddr *peer_addr;
struct sockaddr *dtls_addr;
int deflate;
char *useragent;
const char *quit_reason;
void *cbdata;
openconnect_validate_peer_cert_vfn validate_peer_cert;
openconnect_write_new_config_vfn write_new_config;
openconnect_process_auth_form_vfn process_auth_form;
openconnect_progress_vfn progress;
};
/* Packet types */
#define AC_PKT_DATA 0 /* Uncompressed data */
#define AC_PKT_DPD_OUT 3 /* Dead Peer Detection */
#define AC_PKT_DPD_RESP 4 /* DPD response */
#define AC_PKT_DISCONN 5 /* Client disconnection notice */
#define AC_PKT_KEEPALIVE 7 /* Keepalive */
#define AC_PKT_COMPRESSED 8 /* Compressed data */
#define AC_PKT_TERM_SERVER 9 /* Server kick */
/* Ick */
#if OPENSSL_VERSION_NUMBER >= 0x00909000L
#define method_const const
#else
#define method_const
#endif
#define vpn_progress(vpninfo, ...) (vpninfo)->progress ((vpninfo)->cbdata, __VA_ARGS__)
/****************************************************************************/
/* Oh Solaris how we hate thee! */
#ifdef __sun__
#define time(x) openconnect__time(x)
time_t openconnect__time(time_t *t);
#endif
#ifndef HAVE_ASPRINTF
#define asprintf openconnect__asprintf
int openconnect__asprintf(char **strp, const char *fmt, ...);
#endif
#ifndef HAVE_GETLINE
#define getline openconnect__getline
ssize_t openconnect__getline(char **lineptr, size_t *n, FILE *stream);
#endif
/****************************************************************************/
/* tun.c */
int setup_tun(struct openconnect_info *vpninfo);
int tun_mainloop(struct openconnect_info *vpninfo, int *timeout);
void shutdown_tun(struct openconnect_info *vpninfo);
int script_config_tun (struct openconnect_info *vpninfo, const char *reason);
/* dtls.c */
unsigned char unhex(const char *data);
int setup_dtls(struct openconnect_info *vpninfo);
int dtls_mainloop(struct openconnect_info *vpninfo, int *timeout);
int dtls_try_handshake(struct openconnect_info *vpninfo);
int connect_dtls_socket(struct openconnect_info *vpninfo);
/* cstp.c */
int make_cstp_connection(struct openconnect_info *vpninfo);
int cstp_mainloop(struct openconnect_info *vpninfo, int *timeout);
int cstp_bye(struct openconnect_info *vpninfo, const char *reason);
int cstp_reconnect(struct openconnect_info *vpninfo);
/* ssl.c */
int __attribute__ ((format (printf, 2, 3)))
openconnect_SSL_printf(struct openconnect_info *vpninfo, const char *fmt, ...);
int openconnect_SSL_gets(struct openconnect_info *vpninfo, char *buf, size_t len);
int openconnect_SSL_write(struct openconnect_info *vpninfo, char *buf, size_t len);
int openconnect_SSL_read(struct openconnect_info *vpninfo, char *buf, size_t len);
int openconnect_open_https(struct openconnect_info *vpninfo);
void openconnect_close_https(struct openconnect_info *vpninfo);
int get_cert_md5_fingerprint(struct openconnect_info *vpninfo, X509 *cert,
char *buf);
void openconnect_report_ssl_errors(struct openconnect_info *vpninfo);
/* ${SSL_LIBRARY}.c */
int openconnect_sha1(unsigned char *result, void *data, int len);
int openconnect_random(void *bytes, int len);
/* mainloop.c */
int vpn_add_pollfd(struct openconnect_info *vpninfo, int fd, short events);
int vpn_mainloop(struct openconnect_info *vpninfo);
int queue_new_packet(struct pkt **q, void *buf, int len);
void queue_packet(struct pkt **q, struct pkt *new);
int keepalive_action(struct keepalive_info *ka, int *timeout);
int ka_stalled_dpd_time(struct keepalive_info *ka, int *timeout);
extern int killed;
/* xml.c */
int config_lookup_host(struct openconnect_info *vpninfo, const char *host);
/* auth.c */
int parse_xml_response(struct openconnect_info *vpninfo, char *response,
char *request_body, int req_len, const char **method,
const char **request_body_type);
/* http.c */
char *openconnect_create_useragent(const char *base);
int process_proxy(struct openconnect_info *vpninfo, int ssl_sock);
int internal_parse_url(char *url, char **res_proto, char **res_host,
int *res_port, char **res_path, int default_port);
/* ssl_ui.c */
int set_openssl_ui(void);
/* securid.c */
int generate_securid_tokencodes(struct openconnect_info *vpninfo);
int add_securid_pin(char *token, char *pin);
/* version.c */
extern const char *openconnect_version_str;
#endif /* __OPENCONNECT_INTERNAL_H__ */