/*

* OS/2 support routines for PhysicsFS.

*

* Please see the file LICENSE.txt in the source's root directory.

*

* This file written by Ryan C. Gordon.

*/

#define __PHYSICSFS_INTERNAL__

#include "physfs_platforms.h"

#ifdef PHYSFS_PLATFORM_OS2

#define INCL_DOSSEMAPHORES

#define INCL_DOSDATETIME

#define INCL_DOSFILEMGR

#define INCL_DOSMODULEMGR

#define INCL_DOSERRORS

#define INCL_DOSPROCESS

#define INCL_DOSDEVICES

#define INCL_DOSDEVIOCTL

#define INCL_DOSMISC

#include <os2.h>

#include <errno.h>

#include <time.h>

#include <ctype.h>

#include "physfs_internal.h"

static PHYSFS_ErrorCode errcodeFromAPIRET(const APIRET rc)

{

switch (rc)

{

case NO_ERROR: return PHYSFS_ERR_OK; /* not an error. */

case ERROR_INTERRUPT: return PHYSFS_ERR_OK; /* not an error. */

case ERROR_TIMEOUT: return PHYSFS_ERR_OK; /* not an error. */

case ERROR_FILE_NOT_FOUND: return PHYSFS_ERR_NOT_FOUND;

case ERROR_PATH_NOT_FOUND: return PHYSFS_ERR_NOT_FOUND;

case ERROR_ACCESS_DENIED: return PHYSFS_ERR_PERMISSION;

case ERROR_NOT_DOS_DISK: return PHYSFS_ERR_NOT_FOUND;

case ERROR_SHARING_VIOLATION: return PHYSFS_ERR_PERMISSION;

case ERROR_CANNOT_MAKE: return PHYSFS_ERR_IO; /* maybe this is wrong? */

case ERROR_DEVICE_IN_USE: return PHYSFS_ERR_BUSY;

case ERROR_OPEN_FAILED: return PHYSFS_ERR_IO; /* maybe this is wrong? */

case ERROR_DISK_FULL: return PHYSFS_ERR_NO_SPACE;

case ERROR_PIPE_BUSY: return PHYSFS_ERR_BUSY;

case ERROR_SHARING_BUFFER_EXCEEDED: return PHYSFS_ERR_IO;

case ERROR_FILENAME_EXCED_RANGE: return PHYSFS_ERR_BAD_FILENAME;

case ERROR_META_EXPANSION_TOO_LONG: return PHYSFS_ERR_BAD_FILENAME;

case ERROR_TOO_MANY_HANDLES: return PHYSFS_ERR_IO;

case ERROR_TOO_MANY_OPEN_FILES: return PHYSFS_ERR_IO;

case ERROR_NO_MORE_SEARCH_HANDLES: return PHYSFS_ERR_IO;

case ERROR_SEEK_ON_DEVICE: return PHYSFS_ERR_IO;

case ERROR_NEGATIVE_SEEK: return PHYSFS_ERR_INVALID_ARGUMENT;

/*!!! FIXME: Where did this go? case ERROR_DEL_CURRENT_DIRECTORY: return ERR_DEL_CWD;*/

case ERROR_WRITE_PROTECT: return PHYSFS_ERR_PERMISSION;

case ERROR_WRITE_FAULT: return PHYSFS_ERR_IO;

case ERROR_UNCERTAIN_MEDIA: return PHYSFS_ERR_IO;

case ERROR_PROTECTION_VIOLATION: return PHYSFS_ERR_IO;

case ERROR_BROKEN_PIPE: return PHYSFS_ERR_IO;

/* !!! FIXME: some of these might be PHYSFS_ERR_BAD_FILENAME, etc */

case ERROR_LOCK_VIOLATION:

case ERROR_GEN_FAILURE:

case ERROR_INVALID_PARAMETER:

case ERROR_INVALID_NAME:

case ERROR_INVALID_DRIVE:

case ERROR_INVALID_HANDLE:

case ERROR_INVALID_FUNCTION:

case ERROR_INVALID_LEVEL:

case ERROR_INVALID_CATEGORY:

case ERROR_DUPLICATE_NAME:

case ERROR_BUFFER_OVERFLOW:

case ERROR_BAD_LENGTH:

case ERROR_BAD_DRIVER_LEVEL:

case ERROR_DIRECT_ACCESS_HANDLE:

case ERROR_NOT_OWNER:

return PHYSFS_ERR_OS_ERROR;

default: break;

} /* switch */

return PHYSFS_ERR_OTHER_ERROR;

} /* errcodeFromAPIRET */

/* (be gentle, this function isn't very robust.) */

static void cvt_path_to_correct_case(char *buf)

{

char *fname = buf + 3; /* point to first element. */

char *ptr = strchr(fname, '\\'); /* find end of first element. */

buf[0] = toupper(buf[0]); /* capitalize drive letter. */

/*

* Go through each path element, and enumerate its parent dir until

* a case-insensitive match is found. If one is (and it SHOULD be)

* then overwrite the original element with the correct case.

* If there's an error, or the path has vanished for some reason, it

* won't hurt to have the original case, so we just keep going.

*/

while (fname != NULL)

{

char spec[CCHMAXPATH];

FILEFINDBUF3 fb;

HDIR hdir = HDIR_CREATE;

ULONG count = 1;

APIRET rc;

*(fname - 1) = '\0'; /* isolate parent dir string. */

strcpy(spec, buf); /* copy isolated parent dir... */

strcat(spec, "\\*.*"); /* ...and add wildcard search spec. */

if (ptr != NULL) /* isolate element to find (fname is the start). */

*ptr = '\0';

rc = DosFindFirst((unsigned char *) spec, &hdir, FILE_DIRECTORY,

&fb, sizeof (fb), &count, FIL_STANDARD);

if (rc == NO_ERROR)

{

while (count == 1) /* while still entries to enumerate... */

{

if (__PHYSFS_stricmpASCII(fb.achName, fname) == 0)

{

strcpy(fname, fb.achName);

break; /* there it is. Overwrite and stop searching. */

} /* if */

DosFindNext(hdir, &fb, sizeof (fb), &count);

} /* while */

DosFindClose(hdir);

} /* if */

*(fname - 1) = '\\'; /* unisolate parent dir. */

fname = ptr; /* point to next element. */

if (ptr != NULL)

{

*ptr = '\\'; /* unisolate element. */

ptr = strchr(++fname, '\\'); /* find next element. */

} /* if */

} /* while */

} /* cvt_file_to_correct_case */

int __PHYSFS_platformInit(void)

{

return 1; /* it's all good. */

} /* __PHYSFS_platformInit */

int __PHYSFS_platformDeinit(void)

{

return 1; /* success. */

} /* __PHYSFS_platformDeinit */

static int disc_is_inserted(ULONG drive)

{

int rc;

char buf[20];

DosError(FERR_DISABLEHARDERR | FERR_DISABLEEXCEPTION);

rc = DosQueryFSInfo(drive + 1, FSIL_VOLSER, buf, sizeof (buf));

DosError(FERR_ENABLEHARDERR | FERR_ENABLEEXCEPTION);

return (rc == NO_ERROR);

} /* is_cdrom_inserted */

/* looks like "CD01" in ASCII (littleendian)...used for an ioctl. */

#define CD01 0x31304443

static int is_cdrom_drive(ULONG drive)

{

PHYSFS_uint32 param, data;

ULONG ul1, ul2;

APIRET rc;

HFILE hfile = NULLHANDLE;

drivename[0] = 'A' + drive;

rc = DosOpen(drivename, &hfile, &ul1, 0, 0,

OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,

OPEN_FLAGS_DASD | OPEN_FLAGS_FAIL_ON_ERROR |

OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYNONE, NULL);

if (rc != NO_ERROR)

return 0;

data = 0;

param = PHYSFS_swapULE32(CD01);

ul1 = ul2 = sizeof (PHYSFS_uint32);

rc = DosDevIOCtl(hfile, IOCTL_CDROMDISK, CDROMDISK_GETDRIVER,

&param, sizeof (param), &ul1, &data, sizeof (data), &ul2);

DosClose(hfile);

return ((rc == NO_ERROR) && (PHYSFS_swapULE32(data) == CD01));

} /* is_cdrom_drive */

void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)

{

ULONG dummy = 0;

ULONG drivemap = 0;

ULONG i, bit;

const APIRET rc = DosQueryCurrentDisk(&dummy, &drivemap);

for (i = 0, bit = 1; i < 26; i++, bit <<= 1)

{

if (drivemap & bit) /* this logical drive exists. */

{

if ((is_cdrom_drive(i)) && (disc_is_inserted(i)))

{

char drive[4] = "x:\\";

drive[0] = ('A' + i);

cb(data, drive);

} /* if */

} /* if */

} /* for */

} /* __PHYSFS_platformDetectAvailableCDs */

char *__PHYSFS_platformCalcBaseDir(const char *argv0)

{

char *retval = NULL;

char buf[CCHMAXPATH];

APIRET rc;

PTIB ptib;

PPIB ppib;

PHYSFS_sint32 len;

/* chop off filename, leave path. */

for (len = strlen(buf) - 1; len >= 0; len--)

{

if (buf[len] == '\\')

break;

} /* if */

} /* for */

/* The string is capitalized! Figure out the REAL case... */

cvt_path_to_correct_case(buf);

return retval;

} /* __PHYSFS_platformCalcBaseDir */

char *__PHYSFS_platformGetUserName(void)

{

return NULL; /* (*shrug*) */

} /* __PHYSFS_platformGetUserName */

return __PHYSFS_platformCalcBaseDir(NULL); /* !!! FIXME: ? */

} /* __PHYSFS_platformCalcUserDir */

char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)

{

return __PHYSFS_platformCalcBaseDir(NULL); /* !!! FIXME: ? */

}

/* !!! FIXME: can we lose the malloc here? */

char *__PHYSFS_platformCvtToDependent(const char *prepend,

const char *dirName,

const char *append)

{

int len = ((prepend) ? strlen(prepend) : 0) +

((append) ? strlen(append) : 0) +

strlen(dirName) + 1;

char *retval = allocator.Malloc(len);

char *p;

if (prepend)

strcpy(retval, prepend);

else

retval[0] = '\0';

strcat(retval, dirName);

if (append)

strcat(retval, append);

for (p = strchr(retval, '/'); p != NULL; p = strchr(p + 1, '/'))

*p = '\\';

return retval;

} /* __PHYSFS_platformCvtToDependent */

void __PHYSFS_platformEnumerateFiles(const char *dirname,

PHYSFS_EnumFilesCallback callback,

const char *origdir,

void *callbackdata)

char spec[CCHMAXPATH];

FILEFINDBUF3 fb;

HDIR hdir = HDIR_CREATE;

ULONG count = 1;

APIRET rc;

strcpy(spec, dirname);

strcat(spec, (spec[strlen(spec) - 1] != '\\') ? "\\*.*" : "*.*");

rc = DosFindFirst((unsigned char *) spec, &hdir,

FILE_DIRECTORY | FILE_ARCHIVED |

FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM,

&fb, sizeof (fb), &count, FIL_STANDARD);

while (count == 1)

{

if ((strcmp(fb.achName, ".") != 0) && (strcmp(fb.achName, "..") != 0))

callback(callbackdata, origdir, fb.achName);

DosFindNext(hdir, &fb, sizeof (fb), &count);

} /* while */

DosFindClose(hdir);

} /* __PHYSFS_platformEnumerateFiles */

char *__PHYSFS_platformCurrentDir(void)

{

char *retval;

ULONG currentDisk;

ULONG dummy;

ULONG pathSize = 0;

APIRET rc;

BYTE byte;

rc = DosQueryCurrentDisk(&currentDisk, &dummy);

/* The first call just tells us how much space we need for the string. */

rc = DosQueryCurrentDir(currentDisk, &byte, &pathSize);

pathSize++; /* Add space for null terminator. */

retval = (char *) allocator.Malloc(pathSize + 3); /* plus "x:\\" */

/* Actually get the string this time. */

rc = DosQueryCurrentDir(currentDisk, (PBYTE) (retval + 3), &pathSize);

if (rc != NO_ERROR)

{

allocator.Free(retval);

} /* if */

retval[0] = ('A' + (currentDisk - 1));

retval[1] = ':';

retval[2] = '\\';

return retval;

} /* __PHYSFS_platformCurrentDir */

char *__PHYSFS_platformRealPath(const char *_path)

{

const unsigned char *path = (const unsigned char *) _path;

char buf[CCHMAXPATH];

char *retval;

APIRET rc = DosQueryPathInfo(path, FIL_QUERYFULLNAME, buf, sizeof (buf));

strcpy(retval, buf);

return retval;

} /* __PHYSFS_platformRealPath */

int __PHYSFS_platformMkDir(const char *_filename)

{

const unsigned char *filename = (const unsigned char *) _filename;

const APIRET rc = DosCreateDir(filename, NULL);

return 1;

} /* __PHYSFS_platformMkDir */

void *__PHYSFS_platformOpenRead(const char *_filename)

{

const unsigned char *filename = (const unsigned char *) _filename;

ULONG actionTaken = 0;

HFILE hfile = NULLHANDLE;

/*

* File must be opened SHARE_DENYWRITE and ACCESS_READONLY, otherwise

* DosQueryFileInfo() will fail if we try to get a file length, etc.

*/

const APIRET rc = DosOpen(filename, &hfile, &actionTaken, 0, FILE_NORMAL,

OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,

OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |

OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |

OPEN_ACCESS_READONLY, NULL);

return ((void *) hfile);

} /* __PHYSFS_platformOpenRead */

void *__PHYSFS_platformOpenWrite(const char *_filename)

{

const unsigned char *filename = (const unsigned char *) _filename;

ULONG actionTaken = 0;

HFILE hfile = NULLHANDLE;

/*

* File must be opened SHARE_DENYWRITE and ACCESS_READWRITE, otherwise

* DosQueryFileInfo() will fail if we try to get a file length, etc.

*/

const APIRET rc = DosOpen(filename, &hfile, &actionTaken, 0, FILE_NORMAL,

OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,

OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |

OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |

OPEN_ACCESS_READWRITE, NULL);

return ((void *) hfile);

} /* __PHYSFS_platformOpenWrite */

void *__PHYSFS_platformOpenAppend(const char *_filename)

{

const unsigned char *filename = (const unsigned char *) _filename;

ULONG dummy = 0;

HFILE hfile = NULLHANDLE;

APIRET rc;

/*

* File must be opened SHARE_DENYWRITE and ACCESS_READWRITE, otherwise

* DosQueryFileInfo() will fail if we try to get a file length, etc.

*/

rc = DosOpen(filename, &hfile, &dummy, 0, FILE_NORMAL,

OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,

OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |

OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |

OPEN_ACCESS_READWRITE, NULL);

rc = DosSetFilePtr(hfile, 0, FILE_END, &dummy);

if (rc != NO_ERROR)

{

DosClose(hfile);

} /* if */

return ((void *) hfile);

} /* __PHYSFS_platformOpenAppend */

PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buf, PHYSFS_uint64 len)

{

ULONG br = 0;

APIRET rc;

return (PHYSFS_sint64) br;

} /* __PHYSFS_platformRead */

PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buf,

PHYSFS_uint64 len)

{

ULONG bw = 0;

APIRET rc;

return (PHYSFS_sint64) bw;

} /* __PHYSFS_platformWrite */

int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)

{

ULONG dummy;

HFILE hfile = (HFILE) opaque;

LONG dist = (LONG) pos;

APIRET rc;

/* hooray for 32-bit filesystem limits! :) */

return 1;

} /* __PHYSFS_platformSeek */

PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)

{

ULONG pos;

HFILE hfile = (HFILE) opaque;

const APIRET rc = DosSetFilePtr(hfile, 0, FILE_CURRENT, &pos);

return ((PHYSFS_sint64) pos);

} /* __PHYSFS_platformTell */

PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)

{

FILESTATUS3 fs;

HFILE hfile = (HFILE) opaque;

const APIRET rc = DosQueryFileInfo(hfile, FIL_STANDARD, &fs, sizeof (fs));

return ((PHYSFS_sint64) fs.cbFile);

} /* __PHYSFS_platformFileLength */

int __PHYSFS_platformFlush(void *opaque)

{

const APIRET rc = DosResetBuffer((HFILE) opaque);

return 1;

} /* __PHYSFS_platformFlush */

void __PHYSFS_platformClose(void *opaque)

{

DosClose((HFILE) opaque); /* ignore errors. You should have flushed! */

} /* __PHYSFS_platformClose */

int __PHYSFS_platformDelete(const char *_path)

{

FILESTATUS3 fs;

const unsigned char *path = (const unsigned char *) _path;

APIRET rc = DosQueryPathInfo(path, FIL_STANDARD, &fs, sizeof (fs));

return 1;

} /* __PHYSFS_platformDelete */

/* Convert to a format PhysicsFS can grok... */

PHYSFS_sint64 os2TimeToUnixTime(const FDATE *date, const FTIME *time)

{

struct tm tm;

tm.tm_min = time->minutes;

tm.tm_hour = time->hours;

tm.tm_mday = date->day;

tm.tm_mon = date->month;

tm.tm_year = ((PHYSFS_uint32) date->year) + 80;

tm.tm_wday = -1 /*st_localtz.wDayOfWeek*/;

tm.tm_yday = -1;

tm.tm_isdst = -1;

return (PHYSFS_sint64) mktime(&tm);

} /* os2TimeToUnixTime */

{

FILESTATUS3 fs;

if (fs.attrFile & FILE_DIRECTORY)

{

stat->filetype = PHYSFS_FILETYPE_DIRECTORY;

stat->filesize = 0;

} /* if */

else

{

stat->filetype = PHYSFS_FILETYPE_REGULAR;

stat->filesize = fs.cbFile;

} /* else */

stat->modtime = os2TimeToUnixTime(&fs.fdateLastWrite, &fs.ftimeLastWrite);

if (stat->modtime < 0)

stat->modtime = 0;

stat->accesstime = os2TimeToUnixTime(&fs.fdateLastAccess, &fs.ftimeLastAccess);

if (stat->accesstime < 0)

stat->accesstime = 0;

stat->createtime = os2TimeToUnixTime(&fs.fdateCreation, &fs.ftimeCreation);

if (stat->createtime < 0)

stat->createtime = 0;

stat->readonly = ((fs.attrFile & FILE_READONLY) == FILE_READONLY);

return 1;

} /* __PHYSFS_platformStat */

void *__PHYSFS_platformGetThreadID(void)

{

PTIB ptib;

PPIB ppib;

/*

* Allegedly, this API never fails, but we'll punt and return a

* default value (zero might as well do) if it does.

*/

const APIRET rc = DosGetInfoBlocks(&ptib, &ppib);

return ((void *) ptib->tib_ordinal);

} /* __PHYSFS_platformGetThreadID */

void *__PHYSFS_platformCreateMutex(void)

{

HMTX hmtx = NULLHANDLE;

const APIRET rc = DosCreateMutexSem(NULL, &hmtx, 0, 0);

return ((void *) hmtx);

} /* __PHYSFS_platformCreateMutex */

void __PHYSFS_platformDestroyMutex(void *mutex)

{

DosCloseMutexSem((HMTX) mutex);

} /* __PHYSFS_platformDestroyMutex */

int __PHYSFS_platformGrabMutex(void *mutex)

{

/* Do _NOT_ set the physfs error message in here! */

return (DosRequestMutexSem((HMTX) mutex, SEM_INDEFINITE_WAIT) == NO_ERROR);

} /* __PHYSFS_platformGrabMutex */

void __PHYSFS_platformReleaseMutex(void *mutex)

{

DosReleaseMutexSem((HMTX) mutex);

} /* __PHYSFS_platformReleaseMutex */

/* !!! FIXME: Don't use C runtime for allocators? */

int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)

{

return 0; /* just use malloc() and friends. */

} /* __PHYSFS_platformSetDefaultAllocator */

#endif /* PHYSFS_PLATFORM_OS2 */

/* end of os2.c ... */