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