From 14e097c105c49a102a642c8108979356c5cc3152 Mon Sep 17 00:00:00 2001
From: Michael Vogt <michael.vogt@ubuntu.com>
Date: Wed, 29 Nov 2006 22:59:35 +0100
Subject: * working mirror implementation based on http method

---
 apt-pkg/acquire-method.h |  7 +++--
 methods/mirror.cc        | 72 ++++++++++++++++++++++++++++++++++++++----------
 methods/mirror.h         | 15 +++++++---
 3 files changed, 73 insertions(+), 21 deletions(-)

diff --git a/apt-pkg/acquire-method.h b/apt-pkg/acquire-method.h
index f46209d12..e0e7c1d09 100644
--- a/apt-pkg/acquire-method.h
+++ b/apt-pkg/acquire-method.h
@@ -63,9 +63,10 @@ class pkgAcqMethod
    // Outgoing messages
    void Fail(bool Transient = false);
    inline void Fail(const char *Why, bool Transient = false) {Fail(string(Why),Transient);};
-   void Fail(string Why, bool Transient = false);
-   void URIStart(FetchResult &Res);
-   void URIDone(FetchResult &Res,FetchResult *Alt = 0);
+   virtual void Fail(string Why, bool Transient = false);
+   virtual void URIStart(FetchResult &Res);
+   virtual void URIDone(FetchResult &Res,FetchResult *Alt = 0);
+
    bool MediaFail(string Required,string Drive);
    virtual void Exit() {};
 
diff --git a/methods/mirror.cc b/methods/mirror.cc
index fad076e91..c4d911a3c 100644
--- a/methods/mirror.cc
+++ b/methods/mirror.cc
@@ -17,6 +17,8 @@
 
 #include <fstream>
 #include <iostream>
+#include <stdarg.h>
+
 using namespace std;
 
 #include "mirror.h"
@@ -25,31 +27,50 @@ using namespace std;
 									/*}}}*/
 
 MirrorMethod::MirrorMethod()
-   : pkgAcqMethod("1.2",Pipeline | SendConfig), HasMirrorFile(false)
+   : HttpMethod(), HasMirrorFile(false)
 {
 #if 0
    HasMirrorFile=true;
-   BaseUri="http://people.ubuntu.com/~mvo/mirror/mirrors///";
+   BaseUri="mirror://people.ubuntu.com/~mvo/mirror/mirrors";
+   MirrorFile="/var/lib/apt/lists/people.ubuntu.com_%7emvo_apt_mirror_mirrors";
    Mirror="http://de.archive.ubuntu.com/ubuntu/";
 #endif
 };
 
+// HttpMethod::Configuration - Handle a configuration message		/*{{{*/
+// ---------------------------------------------------------------------
+/* We stash the desired pipeline depth */
+bool MirrorMethod::Configuration(string Message)
+{
+   if (pkgAcqMethod::Configuration(Message) == false)
+      return false;
+   Debug = _config->FindB("Debug::Acquire::mirror",false);
+   
+   return true;
+}
+									/*}}}*/
+
+
 bool MirrorMethod::GetMirrorFile(string uri)
 {
    string Marker = _config->Find("Acquire::Mirror::MagicMarker","///");
    BaseUri = uri.substr(0,uri.find(Marker));
-   BaseUri.replace(0,strlen("mirror://"),"http://");
+
+   string fetch = BaseUri;
+   fetch.replace(0,strlen("mirror://"),"http://");
 
    MirrorFile = _config->FindDir("Dir::State::lists") + URItoFileName(BaseUri);
 
-   cerr << "base-uri: " << BaseUri << endl;
-   cerr << "mirror-file: " << MirrorFile << endl;
+   if(Debug) 
+   {
+      cerr << "base-uri: " << BaseUri << endl;
+      cerr << "mirror-file: " << MirrorFile << endl;
+   }
 
    // FIXME: fetch it with curl
    pkgAcquire Fetcher;
-   new pkgAcqFile(&Fetcher, BaseUri, "", 0, "", "", "", MirrorFile);
+   new pkgAcqFile(&Fetcher, fetch, "", 0, "", "", "", MirrorFile);
    bool res = (Fetcher.Run() == pkgAcquire::Continue);
-   cerr << "fetch-result: " << res << endl;
    
    if(res) 
       HasMirrorFile = true;
@@ -61,7 +82,9 @@ bool MirrorMethod::SelectMirror()
 {
    ifstream in(MirrorFile.c_str());
    getline(in, Mirror);
-   cerr << "Mirror: " << Mirror << endl;
+   if(Debug)
+      cerr << "Using mirror: " << Mirror << endl;
+   return true;
 }
 
 // MirrorMethod::Fetch - Fetch an item					/*{{{*/
@@ -77,21 +100,42 @@ bool MirrorMethod::Fetch(FetchItem *Itm)
       SelectMirror();
    }
 
-   // change the items in the queue
-   Itm->Uri.replace(0,BaseUri.size()+_config->Find("Acquire::Mirror::MagicMarker","///").size()+2/*len("mirror")-len("http")*/,Mirror);
-   cerr << "new Fetch-uri: " << Itm->Uri << endl;
+   if(Queue->Uri.find("mirror://") != string::npos)
+      Queue->Uri.replace(0,BaseUri.size(),Mirror);
 
-   // FIXME: fetch it with!
-   
+   // now run the real fetcher
+   return HttpMethod::Fetch(Itm);
 };
 
+void MirrorMethod::Fail(string Err,bool Transient)
+{
+   if(Queue->Uri.find("http://") != string::npos)
+      Queue->Uri.replace(0,Mirror.size(), BaseUri);
+   pkgAcqMethod::Fail(Err, Transient);
+}
+
+void MirrorMethod::URIStart(FetchResult &Res)
+{
+   if(Queue->Uri.find("http://") != string::npos)
+      Queue->Uri.replace(0,Mirror.size(), BaseUri);
+   pkgAcqMethod::URIStart(Res);
+}
+
+void MirrorMethod::URIDone(FetchResult &Res,FetchResult *Alt)
+{
+   if(Queue->Uri.find("http://") != string::npos)
+      Queue->Uri.replace(0,Mirror.size(), BaseUri);
+   pkgAcqMethod::URIDone(Res, Alt);
+}
+
+
 int main()
 {
    setlocale(LC_ALL, "");
 
    MirrorMethod Mth;
 
-   return Mth.Run();
+   return Mth.Loop();
 }
 
 
diff --git a/methods/mirror.h b/methods/mirror.h
index ca3428830..91cf8c64f 100644
--- a/methods/mirror.h
+++ b/methods/mirror.h
@@ -20,17 +20,24 @@ using std::endl;
 
 #include "http.h"
 
-class MirrorMethod : public pkgAcqMethod
+class MirrorMethod : public HttpMethod
 {
    FetchResult Res;
-   string Mirror;
-   string BaseUri;
-   string MirrorFile;
+   string BaseUri;    // the original mirror://... url
+   string Mirror;     // the selected mirror uri (http://...)
+   string MirrorFile; // 
    bool HasMirrorFile;
 
+   bool Debug;
+
  protected:
    bool GetMirrorFile(string uri);
    bool SelectMirror();
+   virtual void Fail(string Why, bool Transient = false);
+   virtual void URIStart(FetchResult &Res);
+   virtual void URIDone(FetchResult &Res,FetchResult *Alt = 0);
+   virtual bool Configuration(string Message);
+
  public:
    MirrorMethod();
    virtual bool Fetch(FetchItem *Itm);
-- 
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