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library.c
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library.c
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/*
* OpenConnect (SSL + DTLS) VPN client
*
* Copyright © 2008-2011 Intel Corporation.
*
* Authors: 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
*/
#include "openconnect-internal.h"
struct openconnect_info *openconnect_vpninfo_new (char *useragent,
openconnect_validate_peer_cert_fn validate_peer_cert,
openconnect_write_new_config_fn write_new_config,
openconnect_process_auth_form_fn process_auth_form,
openconnect_progress_fn progress)
{
struct openconnect_info *vpninfo = calloc (sizeof(*vpninfo), 1);
vpninfo->mtu = 1406;
vpninfo->ssl_fd = -1;
vpninfo->useragent = openconnect_create_useragent (useragent);
vpninfo->validate_peer_cert = validate_peer_cert;
vpninfo->write_new_config = write_new_config;
vpninfo->process_auth_form = process_auth_form;
vpninfo->progress = progress;
return vpninfo;
}
static void free_optlist (struct vpn_option *opt)
{
struct vpn_option *next;
for (; opt; opt = next) {
next = opt->next;
free(opt->option);
free(opt->value);
free(opt);
}
}
void openconnect_vpninfo_free (struct openconnect_info *vpninfo)
{
openconnect_reset_ssl(vpninfo);
free_optlist(vpninfo->cookies);
free_optlist(vpninfo->cstp_options);
free_optlist(vpninfo->dtls_options);
free(vpninfo->hostname);
free(vpninfo->urlpath);
free(vpninfo->redirect_url);
free(vpninfo->proxy_type);
free(vpninfo->proxy);
free(vpninfo->csd_scriptname);
free(vpninfo->csd_stuburl);
/* These are const in openconnect itself, but for consistency of
the library API we do take ownership of the strings we're given,
and thus we have to free them too. */
free((void *)vpninfo->cafile);
if (vpninfo->cert != vpninfo->sslkey)
free((void *)vpninfo->sslkey);
free((void *)vpninfo->cert);
/* No need to free deflate streams; they weren't initialised */
free(vpninfo);
}
char *openconnect_get_hostname (struct openconnect_info *vpninfo)
{
return vpninfo->hostname;
}
void openconnect_set_hostname (struct openconnect_info *vpninfo, char *hostname)
{
vpninfo->hostname = hostname;
}
char *openconnect_get_urlpath (struct openconnect_info *vpninfo)
{
return vpninfo->urlpath;
}
void openconnect_set_urlpath (struct openconnect_info *vpninfo, char *urlpath)
{
vpninfo->urlpath = urlpath;
}
void openconnect_set_xmlsha1 (struct openconnect_info *vpninfo, char *xmlsha1, int size)
{
if (size != sizeof (vpninfo->xmlsha1))
return;
memcpy (&vpninfo->xmlsha1, xmlsha1, size);
}
void openconnect_set_cafile (struct openconnect_info *vpninfo, char *cafile)
{
vpninfo->cafile = cafile;
}
void openconnect_setup_csd (struct openconnect_info *vpninfo, uid_t uid, int silent, char *wrapper)
{
vpninfo->uid_csd = uid;
vpninfo->uid_csd_given = silent?2:1;
vpninfo->csd_wrapper = wrapper;
}
void openconnect_set_client_cert (struct openconnect_info *vpninfo, char *cert, char *sslkey)
{
vpninfo->cert = cert;
if (sslkey)
vpninfo->sslkey = sslkey;
else
vpninfo->sslkey = cert;
}
struct x509_st *openconnect_get_peer_cert (struct openconnect_info *vpninfo)
{
return SSL_get_peer_certificate(vpninfo->https_ssl);
}
int openconnect_get_port (struct openconnect_info *vpninfo)
{
return vpninfo->port;
}
char *openconnect_get_cookie (struct openconnect_info *vpninfo)
{
return vpninfo->cookie;
}
void openconnect_clear_cookie (struct openconnect_info *vpninfo)
{
if (vpninfo->cookie)
memset(vpninfo->cookie, 0, strlen(vpninfo->cookie));
}
void openconnect_reset_ssl (struct openconnect_info *vpninfo)
{
if (vpninfo->https_ssl) {
openconnect_close_https(vpninfo);
}
if (vpninfo->peer_addr) {
free(vpninfo->peer_addr);
vpninfo->peer_addr = NULL;
}
if (vpninfo->https_ctx) {
SSL_CTX_free(vpninfo->https_ctx);
vpninfo->https_ctx = NULL;
}
}
int openconnect_parse_url (struct openconnect_info *vpninfo, char *url)
{
if (vpninfo->peer_addr) {
free(vpninfo->peer_addr);
vpninfo->peer_addr = NULL;
}
return internal_parse_url (url, NULL, &vpninfo->hostname,
&vpninfo->port, &vpninfo->urlpath, 443);
}
const char *openconnect_get_version (void)
{
return openconnect_version;
}