mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-11-25 17:53:47 +00:00
296 lines
9.1 KiB
C++
296 lines
9.1 KiB
C++
/* This program is free software. It comes without any warranty, to
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* the extent permitted by applicable law. You can redistribute it
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* and/or modify it under the terms of the Do What The Fuck You Want
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* To Public License, Version 2, as published by Sam Hocevar.
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* See http://sam.zoy.org/wtfpl/COPYING for more details. */
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#ifndef MINIHTTPSOCKET_H
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#define MINIHTTPSOCKET_H
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// ---- Compile config -----
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#define MINIHTTP_SUPPORT_HTTP
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#define MINIHTTP_SUPPORT_SOCKET_SET
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// -------------------------
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#include <stdlib.h>
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#include <string>
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// Intentionally avoid pulling in any other headers
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namespace minihttp
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{
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class POST;
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bool InitNetwork();
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void StopNetwork();
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bool HasSSL();
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// Simple one-shot API to download stuff via HTTP(S).
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// Blocks while waiting until all data have arrived.
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// Optionally, pass a size_t pointer to get the received memory block size (excluding the added zero-terminator).
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// Optionally, pass a pointer to POST data to send a POST request instead of a GET request.
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// Returns a pointer to a zero-terminated memory block on success, NULL on failure.
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// The returned pointer must be free()'d after use.
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// Note: Avoid using this function if possible. It has no safeguards against a malicious web server!
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// E.g. A server that sends one byte every few seconds but keeping the connection intact
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// is perfectly capable of stalling the caller for a VERY LONG TIME.
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char *Download(const char *url, size_t *sz = NULL, const POST *post = NULL);
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// append to enc
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void URLEncode(const std::string& s, std::string& enc);
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bool SplitURI(const std::string& uri, std::string& protocol, std::string& host, std::string& file, int& port, bool& useSSL);
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enum SSLResult
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{
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SSLR_OK = 0x0,
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SSLR_NO_SSL = 0x1,
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SSLR_FAIL = 0x2,
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SSLR_CERT_EXPIRED = 0x4,
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SSLR_CERT_REVOKED = 0x8,
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SSLR_CERT_CN_MISMATCH = 0x10,
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SSLR_CERT_NOT_TRUSTED = 0x20,
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SSLR_CERT_MISSING = 0x40,
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SSLR_CERT_SKIP_VERIFY = 0x80,
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SSLR_CERT_FUTURE = 0x100,
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_SSLR_FORCE32BIT = 0x7fffffff
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};
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class TcpSocket
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{
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public:
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TcpSocket();
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virtual ~TcpSocket();
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virtual bool HasPendingTask() const { return false; }
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bool open(const char *addr = NULL, unsigned int port = 0);
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void close();
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bool update(); // returns true if something interesting happened (incoming data, closed connection, etc)
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bool isOpen(void);
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void SetBufsizeIn(unsigned int s);
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bool SetNonBlocking(bool nonblock);
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unsigned int GetBufSize() { return _inbufSize; }
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const char *GetHost(void) { return _host.c_str(); }
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bool SendBytes(const void *buf, unsigned int len);
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// SSL related
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bool initSSL(const char *certs);
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bool hasSSL() const { return !!_sslctx; }
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void shutdownSSL();
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SSLResult verifySSL(char *buf = 0, unsigned buflen = 0); // optionally put info string into buf
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protected:
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virtual void _OnCloseInternal();
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virtual void _OnData(); // data received callback. Internal, should only be overloaded to call _OnRecv()
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virtual void _OnRecv(void *buf, unsigned int size) = 0;
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virtual void _OnClose() {}; // close callback
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virtual void _OnOpen() {} // called when opened
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virtual bool _OnUpdate() { return true; } // called before reading from the socket
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void _ShiftBuffer();
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char *_inbuf;
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char *_readptr; // part of inbuf, optionally skipped header
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char *_writeptr; // passed to recv(). usually equal to _inbuf, but may point inside the buffer in case of a partial transfer.
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unsigned int _inbufSize; // size of internal buffer
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unsigned int _writeSize; // how many bytes can be written to _writeptr;
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unsigned int _recvSize; // incoming size, max _inbufSize - 1
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unsigned int _lastport; // port used in last open() call
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bool _nonblocking; // Default true. If false, the current thread is blocked while waiting for input.
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#ifdef _WIN32
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intptr_t _s; // socket handle. really an int, but to be sure its 64 bit compatible as it seems required on windows, we use this.
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#else
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long _s;
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#endif
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std::string _host;
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private:
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int _writeBytes(const unsigned char *buf, size_t len);
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int _readBytes(unsigned char *buf, size_t maxlen);
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void *_sslctx;
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};
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} // end namespace minihttp
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// ------------------------------------------------------------------------
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#ifdef MINIHTTP_SUPPORT_HTTP
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#include <map>
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#include <queue>
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namespace minihttp
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{
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enum HttpCode
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{
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HTTP_OK = 200,
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HTTP_NOTFOUND = 404,
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};
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class POST
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{
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public:
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void reserve(size_t res) { data.reserve(res); }
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POST& add(const char *key, const char *value);
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const char *c_str() const { return data.c_str(); }
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const std::string& str() const { return data; }
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bool empty() const { return data.empty(); }
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size_t length() const { return data.length(); }
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private:
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std::string data;
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};
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struct Request
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{
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Request() : port(80), user(NULL) {}
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Request(const std::string& h, const std::string& res, int p = 80, void *u = NULL)
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: host(h), resource(res), port(80), user(u), useSSL(false) {}
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std::string protocol;
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std::string host;
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std::string header; // set by socket
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std::string resource;
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std::string extraGetHeaders;
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int port;
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void *user;
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bool useSSL;
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POST post; // if this is empty, it's a GET request, otherwise a POST request
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};
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class HttpSocket : public TcpSocket
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{
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public:
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HttpSocket();
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virtual ~HttpSocket();
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virtual bool HasPendingTask() const
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{
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return ExpectMoreData() || _requestQ.size();
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}
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void SetKeepAlive(unsigned int secs) { _keep_alive = secs; }
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void SetUserAgent(const std::string &s) { _user_agent = s; }
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void SetAcceptEncoding(const std::string& s) { _accept_encoding = s; }
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void SetFollowRedirect(bool follow) { _followRedir = follow; }
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void SetAlwaysHandle(bool h) { _alwaysHandle = h; }
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bool Download(const std::string& url, const char *extraRequest = NULL, void *user = NULL, const POST *post = NULL);
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bool SendRequest(Request& what, bool enqueue);
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bool SendRequest(const std::string what, const char *extraRequest = NULL, void *user = NULL);
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bool QueueRequest(const std::string what, const char *extraRequest = NULL, void *user = NULL);
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unsigned int GetRemaining() const { return _remaining; }
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unsigned int GetStatusCode() const { return _status; }
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unsigned int GetContentLen() const { return _contentLen; }
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bool ChunkedTransfer() const { return _chunkedTransfer; }
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bool ExpectMoreData() const { return _remaining || _chunkedTransfer; }
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const Request &GetCurrentRequest() const { return _curRequest; }
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const char *Hdr(const char *h) const;
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bool IsRedirecting() const;
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bool IsSuccess() const;
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protected:
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virtual void _OnCloseInternal();
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virtual void _OnClose();
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virtual void _OnData(); // data received callback. Internal, should only be overloaded to call _OnRecv()
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virtual void _OnRecv(void *buf, unsigned int size) = 0;
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virtual void _OnOpen(); // called when opene
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virtual bool _OnUpdate(); // called before reading from the socket
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// new ones:
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virtual void _OnRequestDone() {}
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bool _Redirect(std::string loc, bool forceGET);
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void _ProcessChunk();
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bool _EnqueueOrSend(const Request& req, bool forceQueue = false);
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void _DequeueMore();
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bool _OpenRequest(const Request& req);
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void _ParseHeader();
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void _ParseHeaderFields(const char *s, size_t size);
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bool _HandleStatus(); // Returns whether the processed request was successful, or not
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void _FinishRequest();
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void _OnRecvInternal(void *buf, unsigned int size);
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std::string _user_agent;
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std::string _accept_encoding; // Default empty.
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std::string _tmpHdr; // used to save the http header if the incoming buffer was not large enough
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unsigned int _keep_alive; // http related
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unsigned int _remaining; // http "Content-Length: X" - already recvd. 0 if ready for next packet.
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// For chunked transfer encoding, this holds the remaining size of the current chunk
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unsigned int _contentLen; // as reported by server
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unsigned int _status; // http status code, HTTP_OK if things are good
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std::queue<Request> _requestQ;
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std::map<std::string, std::string> _hdrs; // Maps HTTP header fields to their values
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Request _curRequest;
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bool _inProgress;
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bool _chunkedTransfer;
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bool _mustClose; // keep-alive specified, or not
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bool _followRedir; // Default true. Follow 3xx redirects if this is set.
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bool _alwaysHandle; // Also deliver to _OnRecv() if a non-success code was received.
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};
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} // end namespace minihttp
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#endif
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// ------------------------------------------------------------------------
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#ifdef MINIHTTP_SUPPORT_SOCKET_SET
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#include <map>
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namespace minihttp
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{
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class SocketSet
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{
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public:
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virtual ~SocketSet();
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void deleteAll();
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bool update();
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void add(TcpSocket *s, bool deleteWhenDone = true);
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bool has(TcpSocket *s);
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void remove(TcpSocket *s);
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inline size_t size() { return _store.size(); }
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//protected:
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struct SocketSetData
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{
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bool deleteWhenDone;
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// To be extended
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};
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typedef std::map<TcpSocket*, SocketSetData> Store;
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Store _store;
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};
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#endif
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} // end namespace minihttp
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#endif
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