methods/cdrom.cc: add AutoDetectAndMount method

[apt.git] / methods / cdrom.cc

diff --git a/methods/cdrom.cc b/methods/cdrom.cc
index a677022adc1869ecf6a8b3b6a53e35b29b33645a..9802eb46ceb4ffd0ca7b9c33229216fde56e499b 100644 (file)
--- a/methods/cdrom.cc
+++ b/methods/cdrom.cc
@@ -29,12 +29,16 @@ 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 AutoDetectAndMount(URI);
    virtual bool Fetch(FetchItem *Itm);
    string GetID(string Name);
    virtual void Exit();
@@ -53,8 +57,7 @@ CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
                                           DatabaseLoaded(false), 
                                           MountedByApt(false)
 {
-
-
+   UdevCdroms.Dlopen();
 };
                                                                        /*}}}*/
 // CDROMMethod::Exit - Unmount the disc if necessary                   /*{{{*/
@@ -86,13 +89,63 @@ string CDROMMethod::GetID(string Name)
    return string();
 }
                                                                        /*}}}*/
+// CDROMMethod::AutoDetectAndMount                                      /*{{{*/
+// ---------------------------------------------------------------------
+/* Modifies class varaiable CDROM to the mountpoint */
+bool CDROMMethod::AutoDetectAndMount(URI Get)
+{
+   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))
+        {
+           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
+   if (!FileExists("/media/apt"))
+      mkdir("/media/apt", 0755);
 
+   // now try mounting
+   for (unsigned int i=0; i < v.size(); i++)
+   {
+      if (!v[i].Mounted)
+      {
+        if(MountCdrom("/media/apt", v[i].DeviceName)) 
+        {
+           if (IsCorrectCD(Get, "/media/apt"))
+           {
+              MountedByApt = true;
+              CDROM = "/media/apt";
+              return true;
+           } else {
+              UnmountCdrom("/media/apt");
+           }
+        }
+      }
+   }
+
+   return false;
+}
+                                                                       /*}}}*/
 // CDROMMethod::IsCorrectCD                                             /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool CDROMMethod::IsCorrectCD(URI want, string MountPath)
 {
-   bool Debug = _config->FindB("Debug::Acquire::cdrom",false);
    string NewID;
 
    for (unsigned int Version = 2; Version != 0; Version--)
@@ -100,7 +153,7 @@ bool CDROMMethod::IsCorrectCD(URI want, string MountPath)
       if (IdentCdrom(MountPath,NewID,Version) == false)
         return false;
       
-      if (Debug == true)
+      if (Debug)
         clog << "ID " << Version << " " << NewID << endl;
       
       // A hit
@@ -116,11 +169,12 @@ 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;
 
@@ -173,49 +227,12 @@ bool CDROMMethod::Fetch(FetchItem *Itm)
    if (CDROM[0] == '.')
       CDROM= SafeGetCWD() + '/' + CDROM;
    string NewID;
-   pkgUdevCdromDevices udev;
 
    while (CurrentID.empty() == true)
    {
-      // hrm, ugly the loop here
       if (CDROM == "apt-udev-auto/") 
-      {
-        if(udev.Dlopen())
-        {
-           vector<struct CdromDevice> v = udev.Scan();
-           for (unsigned int i=0; i < v.size(); i++)
-           {
-              if (Debug)
-                 clog << "Have cdrom device " << v[i].DeviceName << endl;
-              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;
-                 }
-              }
-           }
-        } else {
-           _error->WarningE("udev.Dlopen() failed","foo");
-        }
-      }
+        AutoDetectAndMount(Get);
 
-      bool Hit = false;
       if(!IsMounted(CDROM))
         MountedByApt = MountCdrom(CDROM);