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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2020 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* C++ classes for Secure Streams
*/
#include <map>
#include <set>
#include <list>
#include <string>
#include <vector>
#include <exception>
#include "libwebsockets.h"
class lss;
/*
* Exception subclass for lss-specific issues
*/
class lssException : public std::exception
{
private:
std::string details;
public:
lssException(std::string _details) { details = _details; }
~lssException() throw() { }
virtual const char *what() const throw() { return details.c_str(); }
};
typedef struct lssbuf {
uint8_t *buf;
size_t len;
} lssbuf_t;
class lssAc
{
private:
struct lwsac *ac;
struct lwsac *iter;
lssAc() { ac = NULL; }
~lssAc() { lwsac_free(&ac); }
public:
void append(lssbuf_t *lb);
void start(bool atomic);
int get(lssbuf_t *lb);
};
/*
* Fixed userdata priv used with ss creation... userdata lives in the lss
* subclasses' members
*/
class lssPriv
{
public:
struct lws_ss_handle *m_ss;
void *m_plss;
};
#define userobj_to_lss(uo) ((lss *)(((lssPriv *)userobj)->m_plss))
/*
* The completion callback... it's called once, and state will be one of
*
* LWSSSCS_QOS_ACK_REMOTE: it completed OK
* LWSSSCS_DESTROYING: we didn't complete
* LWSSSCS_ALL_RETRIES_FAILED: "
* LWSSSCS_QOS_NACK_REMOTE: "
*/
typedef int (*lsscomp_t)(lss *lss, lws_ss_constate_t state, void *arg);
/*
* Base class for Secure Stream objects
*/
class lss
{
public:
lss(lws_ctx_t _ctx, std::string _uri, lsscomp_t _comp, bool _psh,
lws_sscb_rx rx, lws_sscb_tx tx, lws_sscb_state state);
virtual ~lss();
int call_completion(lws_ss_constate_t state);
lsscomp_t comp;
struct lws_ss_handle *m_ss;
uint64_t rxlen;
lws_usec_t us_start;
private:
lws_ctx_t ctx;
char *uri;
lws_ss_policy_t pol;
bool comp_done;
};
/*
* Subclass of lss for atomic messages on heap
*/
class lssMsg : public lss
{
public:
lssMsg(lws_ctx_t _ctx, lsscomp_t _comp, std::string _uri);
virtual ~lssMsg();
};
/*
* Subclass of lss for file transactions
*/
class lssFile : public lss
{
public:
lssFile(lws_ctx_t _ctx, std::string _uri, std::string _path,
lsscomp_t _comp, bool _psh);
virtual ~lssFile();
lws_ss_state_return_t write(const uint8_t *buf, size_t len, int flags);
std::string path;
private:
lws_filefd_type fd;
bool push;
};
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