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test if TMPDIR is accessible before using
[apt.git] / methods / cdrom.cc
diff --git a/methods/cdrom.cc b/methods/cdrom.cc
index 0187283c13351aff8bed23b44b6216b5606f081b..74e2ecc6b632d138e464cb88951449385c6478a9 100644 (file)
--- a/methods/cdrom.cc
+++ b/methods/cdrom.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: cdrom.cc,v 1.5 1998/12/22 07:41:25 jgg Exp $
+// $Id: cdrom.cc,v 1.20.2.1 2004/01/16 18:58:50 mdz Exp $
 /* ######################################################################
 
    CDROM URI method for APT
 /* ######################################################################
 
    CDROM URI method for APT
@@ -8,25 +8,44 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include <config.h>
+
 #include <apt-pkg/acquire-method.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/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 <string>
+#include <vector>
 #include <sys/stat.h>
 #include <sys/stat.h>
-#include <unistd.h>
+
+#include <iostream>
+#include <apti18n.h>
                                                                        /*}}}*/
 
                                                                        /*}}}*/
 
+using namespace std;
+
 class CDROMMethod : public pkgAcqMethod
 {
 class CDROMMethod : public pkgAcqMethod
 {
-   Configuration Database;
    bool DatabaseLoaded;
    bool DatabaseLoaded;
+   bool Debug;
+
+   ::Configuration Database;
    string CurrentID;
    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 bool Fetch(FetchItem *Itm);
    string GetID(string Name);
-   
+   virtual void Exit();
+      
    public:
    
    CDROMMethod();
    public:
    
    CDROMMethod();
@@ -35,44 +54,117 @@ class CDROMMethod : public pkgAcqMethod
 // CDROMMethod::CDROMethod - Constructor                               /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // CDROMMethod::CDROMethod - Constructor                               /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly | 
-                                         SendConfig), DatabaseLoaded(false)
+CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
+                                         SendConfig | NeedsCleanup |
+                                         Removable), 
+                                          DatabaseLoaded(false),
+                                         Debug(false),
+                                          MountedByApt(false)
 {
 {
-};
+   UdevCdroms.Dlopen();
+}
+                                                                       /*}}}*/
+// CDROMMethod::Exit - Unmount the disc if necessary                   /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void CDROMMethod::Exit()
+{ 
+  if (MountedByApt == true)
+      UnmountCdrom(CDROM);
+}
                                                                        /*}}}*/
                                                                        /*}}}*/
-// CDROMMethod::GetID - Get the ID hash for                                                                    /*{{{*/
+// CDROMMethod::GetID - Search the database for a matching string      /*{{{*/
 // ---------------------------------------------------------------------
 // ---------------------------------------------------------------------
-/* We search the configuration space for the name and then return the ID
-   tag associated with it. */
+/* */
 string CDROMMethod::GetID(string Name)
 {
 string CDROMMethod::GetID(string Name)
 {
-   if (DatabaseLoaded == false)
+   // Search for an ID
+   const Configuration::Item *Top = Database.Tree("CD");
+   if (Top != 0)
+      Top = Top->Child;
+   
+   for (; Top != 0;)
+   {      
+      if (Top->Value == Name)
+        return Top->Tag;
+      
+      Top = Top->Next;
+   }
+   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++)
    {
    {
-      // Read the database
-      string DFile = _config->FindFile("Dir::State::cdroms");
-      if (FileExists(DFile) == true)
+      if (v[i].Mounted)
       {
       {
-        if (ReadConfigFile(Database,DFile) == false)
+        if (Debug)
+           clog << "Checking mounted cdrom device " << v[i].DeviceName << endl;
+        if (IsCorrectCD(Get, v[i].MountPath, NewID))
         {
         {
-           _error->Error("Unable to read the cdrom database %s",
-                         DFile.c_str());
-           Fail();
-           return string();
-        }   
+           CDROM = v[i].MountPath;
+           return true;
+        }
       }
       }
-      DatabaseLoaded = true;
    }
    }
-   
-   const Configuration::Item *Top = Database.Tree("CD");
-   for (; Top != 0;)
+
+   // 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 (Top->Value == Name)
-        return Top->Tag;
+      if (!v[i].Mounted)
+      {
+        if(MountCdrom(AptMountPoint, v[i].DeviceName)) 
+        {
+           if (IsCorrectCD(Get, AptMountPoint, NewID))
+           {
+              MountedByApt = true;
+              CDROM = AptMountPoint;
+              return true;
+           } else {
+              UnmountCdrom(AptMountPoint);
+           }
+        }
+      }
+   }
 
 
-      Top = Top->Next;
-   }   
+   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 string();
+   return false;
 }
                                                                        /*}}}*/
 // CDROMMethod::Fetch - Fetch a file                                   /*{{{*/
 }
                                                                        /*}}}*/
 // CDROMMethod::Fetch - Fetch a file                                   /*{{{*/
@@ -80,81 +172,114 @@ string CDROMMethod::GetID(string Name)
 /* */
 bool CDROMMethod::Fetch(FetchItem *Itm)
 {
 /* */
 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);
+
+   if (Debug)
+      clog << "CDROMMethod::Fetch " << Itm->Uri << endl;
+
    /* All IMS queries are returned as a hit, CDROMs are readonly so 
       time stamps never change */
    if (Itm->LastModified != 0)
    {
       Res.LastModified = Itm->LastModified;
       Res.IMSHit = true;
    /* All IMS queries are returned as a hit, CDROMs are readonly so 
       time stamps never change */
    if (Itm->LastModified != 0)
    {
       Res.LastModified = Itm->LastModified;
       Res.IMSHit = true;
+      Res.Filename = Itm->DestFile;
       URIDone(Res);
       return true;
    }
       URIDone(Res);
       return true;
    }
-   
-   string ID = GetID(Get.Host);
-   
+
+   // Load the database
+   if (DatabaseLoaded == false)
+   {
+      // Read the database
+      string DFile = _config->FindFile("Dir::State::cdroms");
+      if (FileExists(DFile) == true)
+      {
+        if (ReadConfigFile(Database,DFile) == false)
+           return _error->Error(_("Unable to read the cdrom database %s"),
+                         DFile.c_str());
+      }
+      DatabaseLoaded = true;
+   }
+       
    // All non IMS queries for package files fail.
    // All non IMS queries for package files fail.
-   if (Itm->IndexFile == true || ID.empty() == true)
+   if (Itm->IndexFile == true || GetID(Get.Host).empty() == true)
    {
    {
-      Fail("Please use apt-cdrom to make this CD recognized by APT."
-          " apt-get update cannot be used to add new CDs");
-      return false;
+      Fail(_("Please use apt-cdrom to make this CD-ROM recognized by APT."
+          " apt-get update cannot be used to add new CD-ROMs"));
+      return true;
    }
 
    // 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 && ID != CurrentID)
+   if (CurrentID.empty() == false && 
+       CurrentID != "FAIL" &&
+       Database.Find("CD::" + CurrentID) != Get.Host)
    {
    {
-      Fail("Wrong CD",true);
-      return false;
+      Fail(_("Wrong CD-ROM"),true);
+      return true;
    }
    }
-   
-   string CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
+
+   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;
    if (CDROM[0] == '.')
       CDROM= SafeGetCWD() + '/' + CDROM;
+
    string NewID;
    string NewID;
-   while (1)
+   while (CurrentID.empty() == true)
    {
    {
-      if (IdentCdrom(CDROM,NewID) == false)
-        return false;
-   
-      // A hit
-      if (NewID == ID)
-        break;
+      if (AutoDetect)
+        AutoDetectAndMount(Get, NewID);
+
+      if(!IsMounted(CDROM))
+        MountedByApt = MountCdrom(CDROM);
       
       
-      UnmountCdrom(CDROM);
+      if (IsCorrectCD(Get, CDROM, NewID))
+        break;
+        
+      // I suppose this should prompt somehow?
+      if (_config->FindB("APT::CDROM::NoMount",false) == false &&
+         UnmountCdrom(CDROM) == false)
+        return _error->Error(_("Unable to unmount the CD-ROM in %s, it may still be in use."),
+                             CDROM.c_str());
       if (MediaFail(Get.Host,CDROM) == false)
       {
         CurrentID = "FAIL";
       if (MediaFail(Get.Host,CDROM) == false)
       {
         CurrentID = "FAIL";
-        Fail("Wrong CD",true);
-        return false;
+        return _error->Error(_("Disk not found."));
       }
       }
-      
-      MountCdrom(CDROM);
    }
    
    }
    
-   // ID matches
-   if (NewID == ID)
-   {
-      Res.Filename = CDROM + File;
-      if (FileExists(Res.Filename) == false)
-        return _error->Error("File not found");
-    
-      CurrentID = ID;
-      Res.LastModified = Itm->LastModified;
-      Res.IMSHit = true;
-      URIDone(Res);
-      return true;
-   }
+   // Found a CD
+   Res.Filename = CDROM + File;
+   struct stat Buf;
+   if (stat(Res.Filename.c_str(),&Buf) != 0)
+      return _error->Error(_("File not found"));
    
    
-   return _error->Error("CDROM not found");
+   if (NewID.empty() == false)
+      CurrentID = NewID;
+   Res.LastModified = Buf.st_mtime;
+   Res.Size = Buf.st_size;
+
+   Hashes Hash;
+   FileFd Fd(Res.Filename, FileFd::ReadOnly);
+   Hash.AddFD(Fd);
+   Res.TakeHashes(Hash);
+
+   URIDone(Res);
+   return true;
 }
                                                                        /*}}}*/
 
 int main()
 {
 }
                                                                        /*}}}*/
 
 int main()
 {
+   setlocale(LC_ALL, "");
+
    CDROMMethod Mth;
    return Mth.Run();
 }
    CDROMMethod Mth;
    return Mth.Run();
 }
APT (for Cydia)