1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/// $Id: http.h,v 1.12 2002/04/18 05:09:38 jgg Exp $
// $Id: http.h,v 1.12 2002/04/18 05:09:38 jgg Exp $
/* ######################################################################
HTTP Acquire Method - This is the HTTP aquire method for APT.
##################################################################### */
/*}}}*/
#ifndef APT_HTTP_H
#define APT_HTTP_H
#include <apt-pkg/strutl.h>
#include <string>
using std::cout;
using std::endl;
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;
struct timeval Start;
static unsigned long long BwReadLimit;
static unsigned long long BwTickReadData;
static struct timeval 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;
// Read data in
bool Read(int Fd);
bool Read(std::string Data);
// Write data out
bool Write(int Fd);
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;};
// Dump everything
void Reset();
void Stats();
CircleBuf(unsigned long long Size);
~CircleBuf();
};
struct ServerState
{
// This is the last parsed Header Line
unsigned int Major;
unsigned int Minor;
unsigned int Result;
char Code[360];
// These are some statistics from the last parsed header lines
unsigned long long Size;
signed long long StartPos;
time_t Date;
bool HaveContent;
enum {Chunked,Stream,Closes} Encoding;
enum {Header, Data} State;
bool Persistent;
std::string Location;
// This is a Persistent attribute of the server itself.
bool Pipeline;
HttpMethod *Owner;
// This is the connection itself. Output is data FROM the server
CircleBuf In;
CircleBuf Out;
int ServerFd;
URI ServerName;
bool HeaderLine(std::string Line);
bool Comp(URI Other) const {return Other.Host == ServerName.Host && Other.Port == ServerName.Port;};
void Reset() {Major = 0; Minor = 0; Result = 0; Code[0] = '\0'; Size = 0;
StartPos = 0; Encoding = Closes; time(&Date); HaveContent = false;
State = Header; Persistent = false; ServerFd = -1;
Pipeline = true;};
/** \brief Result of the header acquire */
enum RunHeadersResult {
/** \brief Header ok */
RUN_HEADERS_OK,
/** \brief IO error while retrieving */
RUN_HEADERS_IO_ERROR,
/** \brief Parse error after retrieving */
RUN_HEADERS_PARSE_ERROR,
};
/** \brief Get the headers before the data */
RunHeadersResult RunHeaders();
/** \brief Transfer the data from the socket */
bool RunData();
bool Open();
bool Close();
ServerState(URI Srv,HttpMethod *Owner);
~ServerState() {Close();};
};
class HttpMethod : public pkgAcqMethod
{
void SendReq(FetchItem *Itm,CircleBuf &Out);
bool Go(bool ToFile,ServerState *Srv);
bool Flush(ServerState *Srv);
bool ServerDie(ServerState *Srv);
/** \brief Result of the header parsing */
enum DealWithHeadersResult {
/** \brief The file is open and ready */
FILE_IS_OPEN,
/** \brief We got a IMS hit, the file has not changed */
IMS_HIT,
/** \brief The server reported a unrecoverable error */
ERROR_UNRECOVERABLE,
/** \brief The server reported a error with a error content page */
ERROR_WITH_CONTENT_PAGE,
/** \brief A error on the client side */
ERROR_NOT_FROM_SERVER,
/** \brief A redirect or retry request */
TRY_AGAIN_OR_REDIRECT
};
/** \brief Handle the retrieved header data */
DealWithHeadersResult DealWithHeaders(FetchResult &Res,ServerState *Srv);
/** \brief Try to AutoDetect the proxy */
bool AutoDetectProxy();
virtual bool Configuration(std::string Message);
// In the event of a fatal signal this file will be closed and timestamped.
static std::string FailFile;
static int FailFd;
static time_t FailTime;
static void SigTerm(int);
protected:
virtual bool Fetch(FetchItem *);
std::string NextURI;
std::string AutoDetectProxyCmd;
public:
friend struct ServerState;
FileFd *File;
ServerState *Server;
int Loop();
HttpMethod() : pkgAcqMethod("1.2",Pipeline | SendConfig)
{
File = 0;
Server = 0;
};
};
#endif
|
