show dependencies of essential packages which are going to remove

[apt.git] / methods / cdrom.cc

diff --git a/methods/cdrom.cc b/methods/cdrom.cc
index 7a20ae514f7cc8ee18197e10fe631fe3dcdf6d48..bf4281e403586a9ef73838d49e780ac49de34df6 100644 (file)
--- a/methods/cdrom.cc
+++ b/methods/cdrom.cc
@@ -9,6 +9,7 @@
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #include <apt-pkg/acquire-method.h>
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #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/cdromutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>


@@ -28,11 +29,16 @@ using namespace std;
 class CDROMMethod : public pkgAcqMethod
 {
    bool DatabaseLoaded;
 class CDROMMethod : public pkgAcqMethod
 {
    bool DatabaseLoaded;

+   bool Debug;
+

    ::Configuration Database;
    string CurrentID;
    string CDROM;
    bool MountedByApt;
    ::Configuration Database;
    string CurrentID;
    string CDROM;
    bool MountedByApt;

+   pkgUdevCdromDevices UdevCdroms;

  
  

+   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();
    virtual bool Fetch(FetchItem *Itm);
    string GetID(string Name);
    virtual void Exit();


@@ -51,8 +57,7 @@ CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
                                           DatabaseLoaded(false), 
                                           MountedByApt(false)
 {
                                           DatabaseLoaded(false), 
                                           MountedByApt(false)
 {

-
-
+   UdevCdroms.Dlopen();

 };
                                                                        /*}}}*/
 // CDROMMethod::Exit - Unmount the disc if necessary                   /*{{{*/
 };
                                                                        /*}}}*/
 // CDROMMethod::Exit - Unmount the disc if necessary                   /*{{{*/


@@ -84,16 +89,93 @@ string CDROMMethod::GetID(string Name)
    return string();
 }
                                                                        /*}}}*/
    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, string& NewID)
+{
+   for (unsigned int Version = 2; Version != 0; Version--)
+   {
+      if (IdentCdrom(MountPath,NewID,Version) == false)
+        return false;
+      
+      if (Debug)
+        clog << "ID " << Version << " " << NewID << endl;
+      
+      // A hit
+      if (Database.Find("CD::" + NewID) == want.Host)
+        return true;
+   }
+   
+   return false;
+}
+                                                                       /*}}}*/

 // CDROMMethod::Fetch - Fetch a file                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool CDROMMethod::Fetch(FetchItem *Itm)
 {
 // CDROMMethod::Fetch - Fetch a file                                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool CDROMMethod::Fetch(FetchItem *Itm)
 {

+   FetchResult Res;
+

    URI Get = Itm->Uri;
    string File = Get.Path;
    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 */
 
    /* All IMS queries are returned as a hit, CDROMs are readonly so 
       time stamps never change */


@@ -129,38 +211,32 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
    }
 
    // We already have a CD inserted, but it is the wrong one
    }
 
    // 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;
    }
    {
       Fail(_("Wrong CD-ROM"),true);
       return true;
    }

-   
+
+   bool AutoDetect = _config->FindB("Acquire::cdrom::AutoDetect", true);

    CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
    CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");

+   if (Debug)
+      clog << "Looking for CDROM at " << CDROM << endl;
+

    if (CDROM[0] == '.')
       CDROM= SafeGetCWD() + '/' + CDROM;
    if (CDROM[0] == '.')
       CDROM= SafeGetCWD() + '/' + CDROM;

+

    string NewID;
    while (CurrentID.empty() == true)
    {
    string NewID;
    while (CurrentID.empty() == true)
    {

-      bool Hit = false;
+      if (AutoDetect)
+        AutoDetectAndMount(Get, NewID);
+

       if(!IsMounted(CDROM))
         MountedByApt = MountCdrom(CDROM);
       if(!IsMounted(CDROM))
         MountedByApt = MountCdrom(CDROM);

-      for (unsigned int Version = 2; Version != 0; Version--)
-      {
-        if (IdentCdrom(CDROM,NewID,Version) == false)
-           return false;
-        
-        if (Debug == true)
-           clog << "ID " << Version << " " << NewID << endl;

       
       

-        // A hit
-        if (Database.Find("CD::" + NewID) == Get.Host)
-        {
-           Hit = true;
-           break;
-        }       
-      }
-
-      if (Hit == true)
+      if (IsCorrectCD(Get, CDROM, NewID))

         break;
         
       // I suppose this should prompt somehow?
         break;
         
       // I suppose this should prompt somehow?