usage of Skipping in pipes can't work, so we ignore-read instead

[apt.git] / methods / cdrom.cc

diff --git a/methods/cdrom.cc b/methods/cdrom.cc
index cd0d4e5120dd2d5b50d3fe05ecd6d39d7d9d0653..22d4b9164225e6575363d359be8fb006b1c0e7e5 100644 (file)
--- a/methods/cdrom.cc
+++ b/methods/cdrom.cc
@@ -8,12 +8,15 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include <config.h>
+
 #include <apt-pkg/acquire-method.h>
 #include <apt-pkg/cdrom.h>
 #include <apt-pkg/cdromutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/hashes.h>
 
 #include <sys/stat.h>
@@ -29,12 +32,16 @@ using namespace std;
 class CDROMMethod : public pkgAcqMethod
 {
    bool DatabaseLoaded;
+   bool Debug;
+
    ::Configuration Database;
    string CurrentID;
    string CDROM;
    bool MountedByApt;
+   pkgUdevCdromDevices UdevCdroms;
  
-   bool IsCorrectCD(URI want, string MountPath);
+   bool IsCorrectCD(URI want, string MountPath, string& NewID);
+   bool AutoDetectAndMount(const URI, string &NewID);
    virtual bool Fetch(FetchItem *Itm);
    string GetID(string Name);
    virtual void Exit();
@@ -50,11 +57,11 @@ class CDROMMethod : public pkgAcqMethod
 CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
                                          SendConfig | NeedsCleanup |
                                          Removable), 
-                                          DatabaseLoaded(false), 
+                                          DatabaseLoaded(false),
+                                         Debug(false),
                                           MountedByApt(false)
 {
-
-
+   UdevCdroms.Dlopen();
 };
                                                                        /*}}}*/
 // CDROMMethod::Exit - Unmount the disc if necessary                   /*{{{*/
@@ -86,21 +93,70 @@ string CDROMMethod::GetID(string Name)
    return string();
 }
                                                                        /*}}}*/
+// CDROMMethod::AutoDetectAndMount                                      /*{{{*/
+// ---------------------------------------------------------------------
+/* Modifies class varaiable CDROM to the mountpoint */
+bool CDROMMethod::AutoDetectAndMount(const URI Get, string &NewID)
+{
+   vector<struct CdromDevice> v = UdevCdroms.Scan();
 
+   // first check if its mounted somewhere already
+   for (unsigned int i=0; i < v.size(); i++)
+   {
+      if (v[i].Mounted)
+      {
+        if (Debug)
+           clog << "Checking mounted cdrom device " << v[i].DeviceName << endl;
+        if (IsCorrectCD(Get, v[i].MountPath, NewID))
+        {
+           CDROM = v[i].MountPath;
+           return true;
+        }
+      }
+   }
+
+   // we are not supposed to mount, exit
+   if (_config->FindB("APT::CDROM::NoMount",false) == true)
+      return false;
+
+   // check if we have the mount point
+   string AptMountPoint = _config->FindDir("Dir::Media::MountPath");
+   if (!FileExists(AptMountPoint))
+      mkdir(AptMountPoint.c_str(), 0750);
+
+   // now try mounting
+   for (unsigned int i=0; i < v.size(); i++)
+   {
+      if (!v[i].Mounted)
+      {
+        if(MountCdrom(AptMountPoint, v[i].DeviceName)) 
+        {
+           if (IsCorrectCD(Get, AptMountPoint, NewID))
+           {
+              MountedByApt = true;
+              CDROM = AptMountPoint;
+              return true;
+           } else {
+              UnmountCdrom(AptMountPoint);
+           }
+        }
+      }
+   }
+
+   return false;
+}
+                                                                       /*}}}*/
 // CDROMMethod::IsCorrectCD                                             /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool CDROMMethod::IsCorrectCD(URI want, string MountPath)
+bool CDROMMethod::IsCorrectCD(URI want, string MountPath, string& NewID)
 {
-   bool Debug = _config->FindB("Debug::Acquire::cdrom",false);
-   string NewID;
-
    for (unsigned int Version = 2; Version != 0; Version--)
    {
       if (IdentCdrom(MountPath,NewID,Version) == false)
         return false;
       
-      if (Debug == true)
+      if (Debug)
         clog << "ID " << Version << " " << NewID << endl;
       
       // A hit
@@ -116,11 +172,14 @@ bool CDROMMethod::IsCorrectCD(URI want, string MountPath)
 /* */
 bool CDROMMethod::Fetch(FetchItem *Itm)
 {
+   FetchResult Res;
+
    URI Get = Itm->Uri;
    string File = Get.Path;
-   FetchResult Res;
+   Debug = _config->FindB("Debug::Acquire::cdrom", false);
 
-   bool Debug = _config->FindB("Debug::Acquire::cdrom",false);
+   if (Debug)
+      clog << "CDROMMethod::Fetch " << Itm->Uri << endl;
 
    /* All IMS queries are returned as a hit, CDROMs are readonly so 
       time stamps never change */
@@ -156,59 +215,32 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
    }
 
    // We already have a CD inserted, but it is the wrong one
-   if (CurrentID.empty() == false && Database.Find("CD::" + CurrentID) != Get.Host)
+   if (CurrentID.empty() == false && 
+       CurrentID != "FAIL" &&
+       Database.Find("CD::" + CurrentID) != Get.Host)
    {
       Fail(_("Wrong CD-ROM"),true);
       return true;
    }
 
-   CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
-
-   // auto-detect mode
-   if (CDROM == "apt-udev-auto/") 
-   {
-      pkgUdevCdromDevices udev;
-      if(udev.Dlopen())
-      {
-        vector<struct CdromDevice> v = udev.Scan();
-        for (unsigned int i=0; i < v.size(); i++)
-        {
-           if (!v[i].Mounted) 
-           {
-              if (!FileExists("/media/apt"))
-                 mkdir("/media/apt", 0755);
-              if(MountCdrom("/media/apt", v[i].DeviceName)) 
-              {
-                 if (IsCorrectCD(Get, "/media/apt"))
-                 {
-                    MountedByApt = true;
-                    CDROM = "/media/apt";
-                    break;
-                 } else {
-                    UnmountCdrom("/media/apt");
-                 }
-              }
-           } else {
-              if (IsCorrectCD(Get, v[i].MountPath))
-              {
-                 CDROM = v[i].MountPath;
-                 break;
-              }
-           }
-        }
-      }
-   }
+   bool AutoDetect = _config->FindB("Acquire::cdrom::AutoDetect", true);
+   CDROM = _config->FindDir("Acquire::cdrom::mount");
+   if (Debug)
+      clog << "Looking for CDROM at " << CDROM << endl;
 
    if (CDROM[0] == '.')
       CDROM= SafeGetCWD() + '/' + CDROM;
+
    string NewID;
    while (CurrentID.empty() == true)
    {
-      bool Hit = false;
+      if (AutoDetect)
+        AutoDetectAndMount(Get, NewID);
+
       if(!IsMounted(CDROM))
         MountedByApt = MountCdrom(CDROM);
       
-      if (IsCorrectCD(Get, CDROM))
+      if (IsCorrectCD(Get, CDROM, NewID))
         break;
         
       // I suppose this should prompt somehow?
@@ -236,7 +268,7 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
 
    Hashes Hash;
    FileFd Fd(Res.Filename, FileFd::ReadOnly);
-   Hash.AddFD(Fd.Fd(), Fd.Size());
+   Hash.AddFD(Fd);
    Res.TakeHashes(Hash);
 
    URIDone(Res);