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  1. /*
  2.  * Apple platform (macOS, iOS, watchOS, etc) support routines for PhysicsFS.
  3.  *
  4.  * Please see the file LICENSE.txt in the source's root directory.
  5.  *
  6.  *  This file written by Ryan C. Gordon.
  7.  */
  8.  
  9. #define __PHYSICSFS_INTERNAL__
  10. #include "physfs_platforms.h"
  11.  
  12. #ifdef PHYSFS_PLATFORM_APPLE
  13.  
  14. #include <Foundation/Foundation.h>
  15.  
  16. #include "physfs_internal.h"
  17.  
  18. int __PHYSFS_platformInit(void)
  19. {
  20.     return 1;  /* success. */
  21. } /* __PHYSFS_platformInit */
  22.  
  23.  
  24. void __PHYSFS_platformDeinit(void)
  25. {
  26.     /* no-op */
  27. } /* __PHYSFS_platformDeinit */
  28.  
  29.  
  30. char *__PHYSFS_platformCalcBaseDir(const char *argv0)
  31. {
  32.     @autoreleasepool
  33.     {
  34.         NSString *path = [[NSBundle mainBundle] bundlePath];
  35.         BAIL_IF(!path, PHYSFS_ERR_OS_ERROR, NULL);
  36.         size_t len = [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
  37.         char *retval = (char *) allocator.Malloc(len + 2);
  38.         BAIL_IF(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
  39.         [path getCString:retval maxLength:len+1 encoding:NSUTF8StringEncoding];
  40.         retval[len] = '/';
  41.         retval[len+1] = '\0';
  42.         return retval;  /* whew. */
  43.     } /* @autoreleasepool */
  44. } /* __PHYSFS_platformCalcBaseDir */
  45.  
  46.  
  47. char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)
  48. {
  49.     @autoreleasepool
  50.     {
  51.         NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, TRUE);
  52.         BAIL_IF(!paths, PHYSFS_ERR_OS_ERROR, NULL);
  53.         NSString *path = (NSString *) [paths objectAtIndex:0];
  54.         BAIL_IF(!path, PHYSFS_ERR_OS_ERROR, NULL);
  55.         size_t len = [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
  56.         const size_t applen = strlen(app);
  57.         char *retval = (char *) allocator.Malloc(len + applen + 3);
  58.         BAIL_IF(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
  59.         [path getCString:retval maxLength:len+1 encoding:NSUTF8StringEncoding];
  60.         snprintf(retval + len, applen + 3, "/%s/", app);
  61.         return retval;  /* whew. */
  62.     } /* @autoreleasepool */
  63. } /* __PHYSFS_platformCalcPrefDir */
  64.  
  65.  
  66. /* CD-ROM detection code... */
  67.  
  68. /*
  69.  * Code based on sample from Apple Developer Connection:
  70.  *  https://developer.apple.com/samplecode/Sample_Code/Devices_and_Hardware/Disks/VolumeToBSDNode/VolumeToBSDNode.c.htm
  71.  */
  72.  
  73. #if !defined(PHYSFS_NO_CDROM_SUPPORT)
  74.  
  75. #include <IOKit/IOKitLib.h>
  76. #include <IOKit/storage/IOMedia.h>
  77. #include <IOKit/storage/IOCDMedia.h>
  78. #include <IOKit/storage/IODVDMedia.h>
  79. #include <sys/mount.h>
  80.  
  81. static int darwinIsWholeMedia(io_service_t service)
  82. {
  83.     int retval = 0;
  84.     CFTypeRef wholeMedia;
  85.  
  86.     if (!IOObjectConformsTo(service, kIOMediaClass))
  87.         return 0;
  88.        
  89.     wholeMedia = IORegistryEntryCreateCFProperty(service,
  90.                                                  CFSTR(kIOMediaWholeKey),
  91.                                                  NULL, 0);
  92.     if (wholeMedia == NULL)
  93.         return 0;
  94.  
  95.     retval = CFBooleanGetValue(wholeMedia);
  96.     CFRelease(wholeMedia);
  97.  
  98.     return retval;
  99. } /* darwinIsWholeMedia */
  100.  
  101.  
  102. static int darwinIsMountedDisc(char *bsdName, mach_port_t masterPort)
  103. {
  104.     int retval = 0;
  105.     CFMutableDictionaryRef matchingDict;
  106.     kern_return_t rc;
  107.     io_iterator_t iter;
  108.     io_service_t service;
  109.  
  110.     if ((matchingDict = IOBSDNameMatching(masterPort, 0, bsdName)) == NULL)
  111.         return 0;
  112.  
  113.     rc = IOServiceGetMatchingServices(masterPort, matchingDict, &iter);
  114.     if ((rc != KERN_SUCCESS) || (!iter))
  115.         return 0;
  116.  
  117.     service = IOIteratorNext(iter);
  118.     IOObjectRelease(iter);
  119.     if (!service)
  120.         return 0;
  121.  
  122.     rc = IORegistryEntryCreateIterator(service, kIOServicePlane,
  123.              kIORegistryIterateRecursively | kIORegistryIterateParents, &iter);
  124.    
  125.     if (!iter)
  126.         return 0;
  127.  
  128.     if (rc != KERN_SUCCESS)
  129.     {
  130.         IOObjectRelease(iter);
  131.         return 0;
  132.     } /* if */
  133.  
  134.     IOObjectRetain(service);  /* add an extra object reference... */
  135.  
  136.     do
  137.     {
  138.         if (darwinIsWholeMedia(service))
  139.         {
  140.             if ( (IOObjectConformsTo(service, kIOCDMediaClass)) ||
  141.                  (IOObjectConformsTo(service, kIODVDMediaClass)) )
  142.             {
  143.                 retval = 1;
  144.             } /* if */
  145.         } /* if */
  146.         IOObjectRelease(service);
  147.     } while ((service = IOIteratorNext(iter)) && (!retval));
  148.                
  149.     IOObjectRelease(iter);
  150.     IOObjectRelease(service);
  151.  
  152.     return retval;
  153. } /* darwinIsMountedDisc */
  154.  
  155. #endif /* !defined(PHYSFS_NO_CDROM_SUPPORT) */
  156.  
  157.  
  158. void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
  159. {
  160. #if !defined(PHYSFS_NO_CDROM_SUPPORT)
  161.     const char *devPrefix = "/dev/";
  162.     const int prefixLen = strlen(devPrefix);
  163.     mach_port_t masterPort = 0;
  164.     struct statfs *mntbufp;
  165.     int i, mounts;
  166.  
  167.     if (IOMasterPort(MACH_PORT_NULL, &masterPort) != KERN_SUCCESS)
  168.         BAIL(PHYSFS_ERR_OS_ERROR, ) /*return void*/;
  169.  
  170.     mounts = getmntinfo(&mntbufp, MNT_WAIT);  /* NOT THREAD SAFE! */
  171.     for (i = 0; i < mounts; i++)
  172.     {
  173.         char *dev = mntbufp[i].f_mntfromname;
  174.         char *mnt = mntbufp[i].f_mntonname;
  175.         if (strncmp(dev, devPrefix, prefixLen) != 0)  /* a virtual device? */
  176.             continue;
  177.  
  178.         dev += prefixLen;
  179.         if (darwinIsMountedDisc(dev, masterPort))
  180.             cb(data, mnt);
  181.     } /* for */
  182. #endif /* !defined(PHYSFS_NO_CDROM_SUPPORT) */
  183. } /* __PHYSFS_platformDetectAvailableCDs */
  184.  
  185. #endif /* PHYSFS_PLATFORM_APPLE */
  186.  
  187. /* end of physfs_platform_apple.m ... */
  188.  
  189.