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// Most of the code in this file was shamelessly ripped from libcdio With minor adjustments
#include "CDUtils.h"
#include "Common.h"
#ifdef _WIN32
#include <windows.h>
#elif __APPLE__
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOBSD.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/storage/IOCDMedia.h>
#include <IOKit/storage/IOMedia.h>
#include <paths.h>
#else
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#endif // WIN32
#ifdef __linux__
#include <linux/cdrom.h>
#endif
#ifdef _WIN32
// takes a root drive path, returns true if it is a cdrom drive
bool is_cdrom(const char drive[])
{
return (DRIVE_CDROM == GetDriveType(drive));
}
// Returns a vector with the device names
std::vector<std::string> cdio_get_devices()
{
std::vector<std::string> drives;
const DWORD buffsize = GetLogicalDriveStrings(0, NULL);
std::unique_ptr<char[]> buff(new char[buffsize]);
if (GetLogicalDriveStrings(buffsize, buff.get()) == buffsize - 1)
{
const char* drive = buff.get();
while (*drive)
{
if (is_cdrom(drive))
{
std::string str(drive);
str.pop_back(); // we don't want the final backslash
drives.push_back(std::move(str));
}
// advance to next drive
while (*drive++) {}
}
}
return drives;
}
#elif defined __APPLE__
// Returns a pointer to an array of strings with the device names
std::vector<std::string> cdio_get_devices()
{
io_object_t next_media;
mach_port_t master_port;
kern_return_t kern_result;
io_iterator_t media_iterator;
CFMutableDictionaryRef classes_to_match;
std::vector<std::string> drives;
kern_result = IOMasterPort( MACH_PORT_NULL, &master_port );
if( kern_result != KERN_SUCCESS )
return( drives );
classes_to_match = IOServiceMatching( kIOCDMediaClass );
if( classes_to_match == NULL )
return( drives );
CFDictionarySetValue( classes_to_match,
CFSTR(kIOMediaEjectableKey), kCFBooleanTrue );
kern_result = IOServiceGetMatchingServices( master_port,
classes_to_match, &media_iterator );
if( kern_result != KERN_SUCCESS)
return( drives );
next_media = IOIteratorNext( media_iterator );
if( next_media != 0 )
{
char psz_buf[0x32];
size_t dev_path_length;
CFTypeRef str_bsd_path;
do
{
str_bsd_path =
IORegistryEntryCreateCFProperty( next_media,
CFSTR( kIOBSDNameKey ), kCFAllocatorDefault,
0 );
if( str_bsd_path == NULL )
{
IOObjectRelease( next_media );
continue;
}
// Below, by appending 'r' to the BSD node name, we indicate
// a raw disk. Raw disks receive I/O requests directly and
// don't go through a buffer cache.
snprintf( psz_buf, sizeof(psz_buf), "%s%c", _PATH_DEV, 'r' );
dev_path_length = strlen( psz_buf );
if( CFStringGetCString( (CFStringRef)str_bsd_path,
(char*)&psz_buf + dev_path_length,
sizeof(psz_buf) - dev_path_length,
kCFStringEncodingASCII))
{
if(psz_buf != NULL)
{
std::string str = psz_buf;
drives.push_back(str);
}
}
CFRelease( str_bsd_path );
IOObjectRelease( next_media );
} while( ( next_media = IOIteratorNext( media_iterator ) ) != 0 );
}
IOObjectRelease( media_iterator );
return drives;
}
#else
// checklist: /dev/cdrom, /dev/dvd /dev/hd?, /dev/scd? /dev/sr?
static struct
{
const char * format;
unsigned int num_min;
unsigned int num_max;
} checklist[] =
{
#ifdef __linux__
{ "/dev/cdrom", 0, 0 },
{ "/dev/dvd", 0, 0 },
{ "/dev/hd%c", 'a', 'z' },
{ "/dev/scd%d", 0, 27 },
{ "/dev/sr%d", 0, 27 },
#else
{ "/dev/acd%d", 0, 27 },
{ "/dev/cd%d", 0, 27 },
#endif
{ NULL, 0, 0 }
};
// Returns true if a device is a block or char device and not a symbolic link
bool is_device(const char *source_name)
{
struct stat buf;
if (0 != lstat(source_name, &buf))
return false;
return ((S_ISBLK(buf.st_mode) || S_ISCHR(buf.st_mode)) &&
!S_ISLNK(buf.st_mode));
}
// Check a device to see if it is a DVD/CD-ROM drive
static bool is_cdrom(const char *drive, char *mnttype)
{
bool is_cd=false;
int cdfd;
// Check if the device exists
if (!is_device(drive))
return(false);
// If it does exist, verify that it is a cdrom/dvd drive
cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0);
if ( cdfd >= 0 )
{
#ifdef __linux__
if (ioctl(cdfd, CDROM_GET_CAPABILITY, 0) != -1)
#endif
is_cd = true;
close(cdfd);
}
return(is_cd);
}
// Returns a pointer to an array of strings with the device names
std::vector<std::string> cdio_get_devices ()
{
unsigned int i;
char drive[40];
std::vector<std::string> drives;
// Scan the system for DVD/CD-ROM drives.
for ( i=0; checklist[i].format; ++i )
{
unsigned int j;
for ( j=checklist[i].num_min; j<=checklist[i].num_max; ++j )
{
sprintf(drive, checklist[i].format, j);
if ( (is_cdrom(drive, NULL)) > 0 )
{
std::string str = drive;
drives.push_back(str);
}
}
}
return drives;
}
#endif
// Returns true if device is a cdrom/dvd drive
bool cdio_is_cdrom(std::string device)
{
#ifdef __linux__
// Resolve symbolic links. This allows symbolic links to valid
// drives to be passed from the command line with the -e flag.
char *devname = realpath(device.c_str(), NULL);
if (!devname)
return false;
#endif
std::vector<std::string> devices = cdio_get_devices();
bool res = false;
for (unsigned int i = 0; i < devices.size(); i++)
{
#ifdef __linux__
if (strncmp(devices[i].c_str(), devname, MAX_PATH) == 0)
#else
if (strncmp(devices[i].c_str(), device.c_str(), MAX_PATH) == 0)
#endif
{
res = true;
break;
}
}
#ifdef __linux__
if (devname)
free(devname);
#endif
devices.clear();
return res;
}
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