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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
HTTP Acquire Method - This is the HTTP acquire method for APT.
##################################################################### */
/*}}}*/
#ifndef APT_HTTP_H
#define APT_HTTP_H
#include <apt-pkg/strutl.h>
#include <chrono>
#include <iostream>
#include <memory>
#include <string>
#include <sys/time.h>
#include "basehttp.h"
#include "connect.h"
using std::cout;
using std::endl;
class FileFd;
class HttpMethod;
class Hashes;
class CircleBuf
{
unsigned char *Buf;
unsigned long long Size;
unsigned long long InP;
unsigned long long OutP;
std::string OutQueue;
unsigned long long StrPos;
unsigned long long MaxGet;
static unsigned long long BwReadLimit;
static unsigned long long BwTickReadData;
static std::chrono::steady_clock::duration BwReadTick;
static const unsigned int BW_HZ;
unsigned long long LeftRead() const
{
unsigned long long Sz = Size - (InP - OutP);
if (Sz > Size - (InP%Size))
Sz = Size - (InP%Size);
return Sz;
}
unsigned long long LeftWrite() const
{
unsigned long long Sz = InP - OutP;
if (InP > MaxGet)
Sz = MaxGet - OutP;
if (Sz > Size - (OutP%Size))
Sz = Size - (OutP%Size);
return Sz;
}
void FillOut();
public:
Hashes *Hash;
// total amount of data that got written so far
unsigned long long TotalWriten;
// Read data in
bool Read(std::unique_ptr<MethodFd> const &Fd);
bool Read(std::string const &Data);
// Write data out
bool Write(std::unique_ptr<MethodFd> const &Fd);
bool Write(std::string &Data);
bool WriteTillEl(std::string &Data,bool Single = false);
// Control the write limit
void Limit(long long Max) {if (Max == -1) MaxGet = 0-1; else MaxGet = OutP + Max;}
bool IsLimit() const {return MaxGet == OutP;};
void Print() const {cout << MaxGet << ',' << OutP << endl;};
// Test for free space in the buffer
bool ReadSpace() const {return Size - (InP - OutP) > 0;};
bool WriteSpace() const {return InP - OutP > 0;};
void Reset();
CircleBuf(HttpMethod const * const Owner, unsigned long long Size);
~CircleBuf();
};
struct HttpServerState final : public ServerState
{
// This is the connection itself. Output is data FROM the server
CircleBuf In;
CircleBuf Out;
std::unique_ptr<MethodFd> ServerFd;
protected:
bool ReadHeaderLines(std::string &Data) override;
ResultState LoadNextResponse(bool ToFile, RequestState &Req) override;
bool WriteResponse(std::string const &Data) override;
public:
void Reset() override;
ResultState RunData(RequestState &Req) override;
ResultState RunDataToDevNull(RequestState &Req) override;
ResultState Open() override;
bool IsOpen() override;
bool Close() override;
bool InitHashes(HashStringList const &ExpectedHashes) override;
Hashes * GetHashes() override;
ResultState Die(RequestState &Req) override;
bool Flush(FileFd *File, bool MustComplete = true) override;
ResultState Go(bool ToFile, RequestState &Req) override;
HttpServerState(URI Srv, HttpMethod *Owner);
~HttpServerState() override {Close();};
};
class HttpMethod final : public BaseHttpMethod
{
public:
void SendReq(FetchItem *Itm) override;
std::unique_ptr<ServerState> CreateServerState(URI const &uri) override;
void RotateDNS() override;
DealWithHeadersResult DealWithHeaders(FetchResult &Res, RequestState &Req) override;
protected:
std::string AutoDetectProxyCmd;
public:
friend struct HttpServerState;
explicit HttpMethod(std::string &&pProg);
};
#endif
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