Merge remote-tracking branch 'donkult/debian/sid' into debian/sid

1 files changed, 144 insertions, 0 deletions

diff --git a/methods/server.h b/methods/server.h
new file mode 100644
index 000000000..4dc6a1f2f
--- /dev/null
+++ b/methods/server.h
@@ -0,0 +1,144 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+
+   Classes dealing with the abstraction of talking to a end via a text
+   protocol like HTTP (which is used by the http and https methods)
+
+   ##################################################################### */
+									/*}}}*/
+
+#ifndef APT_SERVER_H
+#define APT_SERVER_H
+
+#include <apt-pkg/strutl.h>
+
+#include <string>
+
+using std::cout;
+using std::endl;
+
+class Hashes;
+class ServerMethod;
+class FileFd;
+
+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;
+   URI ServerName;
+   URI Proxy;
+   unsigned long TimeOut;
+
+   protected:
+   ServerMethod *Owner;
+
+   virtual bool ReadHeaderLines(std::string &Data) = 0;
+   virtual bool LoadNextResponse(bool const ToFile, FileFd * const File) = 0;
+
+   public:
+   bool HeaderLine(std::string Line);
+
+   /** \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(FileFd * const File);
+
+   bool Comp(URI Other) const {return Other.Host == ServerName.Host && Other.Port == ServerName.Port;};
+   virtual 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; Pipeline = true;};
+   virtual bool WriteResponse(std::string const &Data) = 0;
+
+   /** \brief Transfer the data from the socket */
+   virtual bool RunData(FileFd * const File) = 0;
+
+   virtual bool Open() = 0;
+   virtual bool IsOpen() = 0;
+   virtual bool Close() = 0;
+   virtual bool InitHashes(FileFd &File) = 0;
+   virtual Hashes * GetHashes() = 0;
+   virtual bool Die(FileFd &File) = 0;
+   virtual bool Flush(FileFd * const File) = 0;
+   virtual bool Go(bool ToFile, FileFd * const File) = 0;
+
+   ServerState(URI Srv, ServerMethod *Owner);
+   virtual ~ServerState() {};
+};
+
+class ServerMethod : public pkgAcqMethod
+{
+   protected:
+   virtual bool Fetch(FetchItem *);
+
+   ServerState *Server;
+   std::string NextURI;
+   FileFd *File;
+
+   unsigned long PipelineDepth;
+   bool AllowRedirect;
+
+   public:
+   bool Debug;
+
+   /** \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 An 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);
+
+   // 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);
+
+   virtual bool Configuration(std::string Message);
+   virtual bool Flush() { return Server->Flush(File); };
+
+   int Loop();
+
+   virtual void SendReq(FetchItem *Itm) = 0;
+   virtual ServerState * CreateServerState(URI uri) = 0;
+   virtual void RotateDNS() = 0;
+
+   ServerMethod(const char *Ver,unsigned long Flags = 0) : pkgAcqMethod(Ver, Flags), PipelineDepth(0), AllowRedirect(false), Debug(false) {};
+   virtual ~ServerMethod() {};
+};
+
+#endif