add a testcase to check for forbidden https→http downgrades

[apt.git] / methods / http.h

diff --git a/methods/http.h b/methods/http.h
index dec5cd80f3105788d01512bcda625ada112a8736..02c04e8ae8375befbb6bfb4a8cd8cc7e7fcedfc1 100644 (file)
--- a/methods/http.h
+++ b/methods/http.h
@@ -11,41 +11,44 @@
 #ifndef APT_HTTP_H
 #define APT_HTTP_H
 
-#define MAXLEN 360
+#include <apt-pkg/strutl.h>
 
+#include <string>
 
+#include "server.h"
 
 using std::cout;
 using std::endl;
 
 class HttpMethod;
+class Hashes;
 
 class CircleBuf
 {
    unsigned char *Buf;
-   unsigned long Size;
-   unsigned long InP;
-   unsigned long OutP;
-   string OutQueue;
-   unsigned long StrPos;
-   unsigned long MaxGet;
+   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 BwReadLimit;
-   static unsigned long BwTickReadData;
+
+   static unsigned long long BwReadLimit;
+   static unsigned long long BwTickReadData;
    static struct timeval BwReadTick;
    static const unsigned int BW_HZ;
 
-   unsigned long LeftRead()
+   unsigned long long LeftRead() const
    {
-      unsigned long Sz = Size - (InP - OutP);
+      unsigned long long Sz = Size - (InP - OutP);
       if (Sz > Size - (InP%Size))
         Sz = Size - (InP%Size);
       return Sz;
    }
-   unsigned long LeftWrite()
+   unsigned long long LeftWrite() const
    {
-      unsigned long Sz = InP - OutP;
+      unsigned long long Sz = InP - OutP;
       if (InP > MaxGet)
         Sz = MaxGet - OutP;
       if (Sz > Size - (OutP%Size))
@@ -53,107 +56,85 @@ class CircleBuf
       return Sz;
    }
    void FillOut();
-   
+
    public:
-   
    Hashes *Hash;
-   
+
    // Read data in
    bool Read(int Fd);
-   bool Read(string Data);
-   
+   bool Read(std::string Data);
+
    // Write data out
    bool Write(int Fd);
-   bool WriteTillEl(string &Data,bool Single = false);
-   
+   bool WriteTillEl(std::string &Data,bool Single = false);
+
    // Control the write limit
-   void Limit(long Max) {if (Max == -1) MaxGet = 0-1; else MaxGet = OutP + Max;}   
-   bool IsLimit() {return MaxGet == OutP;};
-   void Print() {cout << MaxGet << ',' << OutP << endl;};
+   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() {return Size - (InP - OutP) > 0;};
-   bool WriteSpace() {return InP - OutP > 0;};
+   bool ReadSpace() const {return Size - (InP - OutP) > 0;};
+   bool WriteSpace() const {return InP - OutP > 0;};
 
    // Dump everything
    void Reset();
    void Stats();
 
-   CircleBuf(unsigned long Size);
-   ~CircleBuf() {delete [] Buf; delete Hash;};
+   CircleBuf(unsigned long long Size);
+   ~CircleBuf();
 };
 
-struct ServerState
+struct HttpServerState: public ServerState
 {
-   // This is the last parsed Header Line
-   unsigned int Major;
-   unsigned int Minor;
-   unsigned int Result;
-   char Code[MAXLEN];
-   
-   // These are some statistics from the last parsed header lines
-   unsigned long Size;
-   signed long StartPos;
-   time_t Date;
-   bool HaveContent;
-   enum {Chunked,Stream,Closes} Encoding;
-   enum {Header, Data} State;
-   bool Persistent;
-   
-   // 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(string Line);
-   bool Comp(URI Other) {return Other.Host == ServerName.Host && Other.Port == ServerName.Port;};
-   void Reset() {Major = 0; Minor = 0; Result = 0; Size = 0; StartPos = 0;
-                 Encoding = Closes; time(&Date); ServerFd = -1; 
-                 Pipeline = true;};
-   int RunHeaders();
-   bool RunData();
-   
-   bool Open();
-   bool Close();
-   
-   ServerState(URI Srv,HttpMethod *Owner);
-   ~ServerState() {Close();};
+
+   protected:
+   virtual bool ReadHeaderLines(std::string &Data);
+   virtual bool LoadNextResponse(bool const ToFile, FileFd * const File);
+   virtual bool WriteResponse(std::string const &Data);
+
+   public:
+   virtual void Reset() { ServerState::Reset(); ServerFd = -1; };
+
+   virtual bool RunData(FileFd * const File);
+
+   virtual bool Open();
+   virtual bool IsOpen();
+   virtual bool Close();
+   virtual bool InitHashes(FileFd &File);
+   virtual Hashes * GetHashes();
+   virtual bool Die(FileFd &File);
+   virtual bool Flush(FileFd * const File);
+   virtual bool Go(bool ToFile, FileFd * const File);
+
+   HttpServerState(URI Srv, HttpMethod *Owner);
+   virtual ~HttpServerState() {Close();};
 };
 
-class HttpMethod : public pkgAcqMethod
+class HttpMethod : public ServerMethod
 {
-   void SendReq(FetchItem *Itm,CircleBuf &Out);
-   bool Go(bool ToFile,ServerState *Srv);
-   bool Flush(ServerState *Srv);
-   bool ServerDie(ServerState *Srv);
-   int DealWithHeaders(FetchResult &Res,ServerState *Srv);
-
-   virtual bool Configuration(string Message);
-   
-   // In the event of a fatal signal this file will be closed and timestamped.
-   static string FailFile;
-   static int FailFd;
-   static time_t FailTime;
-   static void SigTerm(int);
+   public:
+   virtual void SendReq(FetchItem *Itm);
+
+   /** \brief Try to AutoDetect the proxy */
+   bool AutoDetectProxy();
+
+   virtual bool Configuration(std::string Message);
+
+   virtual ServerState * CreateServerState(URI uri);
+   virtual void RotateDNS();
 
    protected:
-   virtual bool Fetch(FetchItem *);
-   
+   std::string AutoDetectProxyCmd;
+
    public:
-   friend class ServerState;
-
-   FileFd *File;
-   ServerState *Server;
-   
-   int Loop();
-   
-   HttpMethod() : pkgAcqMethod("1.2",Pipeline | SendConfig) 
+   friend struct HttpServerState;
+
+   HttpMethod() : ServerMethod("1.2",Pipeline | SendConfig)
    {
       File = 0;
       Server = 0;