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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: cdrom.cc,v 1.20.2.1 2004/01/16 18:58:50 mdz Exp $
/* ######################################################################
CDROM URI method for APT
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/cdromutl.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/hashes.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dlfcn.h>
#include <iostream>
#include <apti18n.h>
/*}}}*/
using namespace std;
struct udev;
struct udev_list_entry;
// libudev dlopen stucture
struct udev_p {
struct udev* (*udev_new)(void);
int (*udev_enumerate_add_match_property)(struct udev_enumerate *udev_enumerate, const char *property, const char *value);
int (*udev_enumerate_scan_devices)(struct udev_enumerate *udev_enumerate);
struct udev_list_entry *(*udev_enumerate_get_list_entry)(struct udev_enumerate *udev_enumerate);
struct udev_device *(*udev_device_new_from_syspath)(struct udev *udev, const char *syspath);
struct udev *(*udev_enumerate_get_udev)(struct udev_enumerate *udev_enumerate);
const char *(*udev_list_entry_get_name)(struct udev_list_entry *list_entry);
const char *(*udev_device_get_devnode)(struct udev_device *udev_device);
struct udev_enumerate *(*udev_enumerate_new) (struct udev *udev);
struct udev_list_entry *(*udev_list_entry_get_next)(struct udev_list_entry *list_entry);
};
class CDROMMethod : public pkgAcqMethod
{
bool DatabaseLoaded;
::Configuration Database;
string CurrentID;
string CDROM;
bool MountedByApt;
vector<string> CdromDevices;
virtual bool Fetch(FetchItem *Itm);
string GetID(string Name);
virtual void Exit();
public:
CDROMMethod();
};
// CDROMMethod::CDROMethod - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
CDROMMethod::CDROMMethod() : pkgAcqMethod("1.0",SingleInstance | LocalOnly |
SendConfig | NeedsCleanup |
Removable),
DatabaseLoaded(false),
MountedByApt(false)
{
// see if we can get libudev
void *h = dlopen("libudev.so.0", RTLD_LAZY);
if (h) {
// the pointers for the udev struct
struct udev_p p;
p.udev_new = (udev* (*)(void)) dlsym(h, "udev_new");
p.udev_enumerate_add_match_property = (int (*)(udev_enumerate*, const char*, const char*))dlsym(h, "udev_enumerate_add_match_property");
p.udev_enumerate_scan_devices = (int (*)(udev_enumerate*))dlsym(h, "udev_enumerate_scan_devices");
p.udev_enumerate_get_list_entry = (udev_list_entry* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_list_entry");
p.udev_device_new_from_syspath = (udev_device* (*)(udev*, const char*))dlsym(h, "udev_device_new_from_syspath");
p.udev_enumerate_get_udev = (udev* (*)(udev_enumerate*))dlsym(h, "udev_enumerate_get_udev");
p.udev_list_entry_get_name = (const char* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_name");
p.udev_device_get_devnode = (const char* (*)(udev_device*))dlsym(h, "udev_device_get_devnode");
p.udev_enumerate_new = (udev_enumerate* (*)(udev*))dlsym(h, "udev_enumerate_new");
p.udev_list_entry_get_next = (udev_list_entry* (*)(udev_list_entry*))dlsym(h, "udev_list_entry_get_next");
struct udev_enumerate *enumerate;
struct udev_list_entry *l, *devices;
struct udev *udev_ctx;
udev_ctx = p.udev_new();
enumerate = p.udev_enumerate_new (udev_ctx);
p.udev_enumerate_add_match_property(enumerate, "ID_CDROM", "1");
p.udev_enumerate_scan_devices (enumerate);
devices = p.udev_enumerate_get_list_entry (enumerate);
for (l = devices; l != NULL; l = p.udev_list_entry_get_next (l))
{
struct udev_device *udevice;
udevice = p.udev_device_new_from_syspath (p.udev_enumerate_get_udev (enumerate), p.udev_list_entry_get_name (l));
if (udevice == NULL)
continue;
const char* devnode = p.udev_device_get_devnode(udevice);
//std::cerr << devnode << std::endl;
CdromDevices.push_back(string(devnode));
}
}
};
/*}}}*/
// CDROMMethod::Exit - Unmount the disc if necessary /*{{{*/
// ---------------------------------------------------------------------
/* */
void CDROMMethod::Exit()
{
if (MountedByApt == true)
UnmountCdrom(CDROM);
}
/*}}}*/
// CDROMMethod::GetID - Search the database for a matching string /*{{{*/
// ---------------------------------------------------------------------
/* */
string CDROMMethod::GetID(string Name)
{
// 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::Fetch - Fetch a file /*{{{*/
// ---------------------------------------------------------------------
/* */
bool CDROMMethod::Fetch(FetchItem *Itm)
{
URI Get = Itm->Uri;
string File = Get.Path;
FetchResult Res;
bool Debug = _config->FindB("Debug::Acquire::cdrom",false);
/* 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;
}
// 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.
if (Itm->IndexFile == true || GetID(Get.Host).empty() == true)
{
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
if (CurrentID.empty() == false && Database.Find("CD::" + CurrentID) != Get.Host)
{
Fail(_("Wrong CD-ROM"),true);
return true;
}
CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
if (CDROM[0] == '.')
CDROM= SafeGetCWD() + '/' + CDROM;
string NewID;
while (CurrentID.empty() == true)
{
bool Hit = false;
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)
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";
return _error->Error(_("Disk not found."));
}
}
// Found a CD
Res.Filename = CDROM + File;
struct stat Buf;
if (stat(Res.Filename.c_str(),&Buf) != 0)
return _error->Error(_("File 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.Fd(), Fd.Size());
Res.TakeHashes(Hash);
URIDone(Res);
return true;
}
/*}}}*/
int main()
{
setlocale(LC_ALL, "");
CDROMMethod Mth;
return Mth.Run();
}
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