add more parsing error checking for rred

[apt.git] / methods / server.h

diff --git a/methods/server.h b/methods/server.h
index 2d43b332fe3d1187528cae92dbbd8eeb8c64bfc4..8d7d33ee642c2ec9393774c2abc8b86cf9092e57 100644 (file)
--- a/methods/server.h
+++ b/methods/server.h
@@ -12,7 +12,10 @@
 #define APT_SERVER_H
 
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/acquire-method.h>
 
+#include <time.h>
+#include <iostream>
 #include <string>
 
 using std::cout;
@@ -31,8 +34,16 @@ struct ServerState
    char Code[360];
 
    // These are some statistics from the last parsed header lines
-   unsigned long long Size;
-   signed long long StartPos;
+
+   // total size of the usable content (aka: the file)
+   unsigned long long TotalFileSize;
+   // size we actually download (can be smaller than Size if we have partial content)
+   unsigned long long DownloadSize;
+   // size of junk content (aka: server error pages)
+   unsigned long long JunkSize;
+   // The start of the data (for partial content)
+   unsigned long long StartPos;
+
    time_t Date;
    bool HaveContent;
    enum {Chunked,Stream,Closes} Encoding;
@@ -46,14 +57,17 @@ struct ServerState
    URI Proxy;
    unsigned long TimeOut;
 
+   unsigned long long MaximumSize;
+
    protected:
    ServerMethod *Owner;
 
-   bool HeaderLine(std::string Line);
    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 */
@@ -61,15 +75,16 @@ struct ServerState
       /** \brief IO error while retrieving */
       RUN_HEADERS_IO_ERROR,
       /** \brief Parse error after retrieving */
-      RUN_HEADERS_PARSE_ERROR,
+      RUN_HEADERS_PARSE_ERROR
    };
    /** \brief Get the headers before the data */
-   RunHeadersResult RunHeaders(FileFd * const File);
+   RunHeadersResult RunHeaders(FileFd * const File, const std::string &Uri);
+   bool AddPartialFileToHashes(FileFd &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;
+   virtual void Reset() {Major = 0; Minor = 0; Result = 0; Code[0] = '\0'; TotalFileSize = 0; JunkSize = 0;
                 StartPos = 0; Encoding = Closes; time(&Date); HaveContent = false;
-                State = Header; Persistent = false; Pipeline = true;};
+                State = Header; Persistent = false; Pipeline = true; MaximumSize = 0;};
    virtual bool WriteResponse(std::string const &Data) = 0;
 
    /** \brief Transfer the data from the socket */
@@ -78,7 +93,7 @@ struct ServerState
    virtual bool Open() = 0;
    virtual bool IsOpen() = 0;
    virtual bool Close() = 0;
-   virtual bool InitHashes(FileFd &File) = 0;
+   virtual bool InitHashes(HashStringList const &ExpectedHashes) = 0;
    virtual Hashes * GetHashes() = 0;
    virtual bool Die(FileFd &File) = 0;
    virtual bool Flush(FileFd * const File) = 0;
@@ -100,6 +115,10 @@ class ServerMethod : public pkgAcqMethod
    unsigned long PipelineDepth;
    bool AllowRedirect;
 
+   // Find the biggest item in the fetch queue for the checking of the maximum
+   // size
+   unsigned long long FindMaximumObjectSizeInQueue() const APT_PURE;
+
    public:
    bool Debug;
 
@@ -125,7 +144,7 @@ class ServerMethod : public pkgAcqMethod
    static std::string FailFile;
    static int FailFd;
    static time_t FailTime;
-   static void SigTerm(int);
+   static APT_NORETURN void SigTerm(int);
 
    virtual bool Configuration(std::string Message);
    virtual bool Flush() { return Server->Flush(File); };
@@ -134,8 +153,9 @@ class ServerMethod : public pkgAcqMethod
 
    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) {};
+   ServerMethod(const char *Ver,unsigned long Flags = 0) : pkgAcqMethod(Ver, Flags), Server(NULL), File(NULL), PipelineDepth(10), AllowRedirect(false), Debug(false) {};
    virtual ~ServerMethod() {};
 };