/*

* OS/2 support routines for PhysicsFS.

*

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

*

* This file written by Ryan C. Gordon.

*/

#if HAVE_CONFIG_H

# include <config.h>

#endif

#if (defined OS2)

#define INCL_DOSSEMAPHORES

#define INCL_DOSDATETIME

#define INCL_DOSFILEMGR

#define INCL_DOSMODULEMGR

#define INCL_DOSERRORS

#define INCL_DOSDEVIOCTL

#define INCL_DOSMISC

#include <os2.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <time.h>

#include <ctype.h>

#define __PHYSICSFS_INTERNAL__

#include "physfs_internal.h"

const char *__PHYSFS_platformDirSeparator = "\\";

case NO_ERROR: return(NULL); /* not an error. */

case ERROR_INTERRUPT: return(NULL); /* not an error. */

case ERROR_TIMEOUT: return(NULL); /* not an error. */

case ERROR_NOT_ENOUGH_MEMORY: return(ERR_OUT_OF_MEMORY);

case ERROR_FILE_NOT_FOUND: return(ERR_NO_SUCH_FILE);

case ERROR_PATH_NOT_FOUND: return(ERR_NO_SUCH_PATH);

case ERROR_ACCESS_DENIED: return(ERR_ACCESS_DENIED);

case ERROR_NOT_DOS_DISK: return(ERR_NOT_A_DOS_DISK);

case ERROR_SHARING_VIOLATION: return(ERR_SHARING_VIOLATION);

case ERROR_CANNOT_MAKE: return(ERR_CANNOT_MAKE);

case ERROR_DEVICE_IN_USE: return(ERR_DEV_IN_USE);

case ERROR_OPEN_FAILED: return(ERR_OPEN_FAILED);

case ERROR_DISK_FULL: return(ERR_DISK_FULL);

case ERROR_PIPE_BUSY: return(ERR_PIPE_BUSY);

case ERROR_SHARING_BUFFER_EXCEEDED: return(ERR_SHARING_BUF_EXCEEDED);

case ERROR_FILENAME_EXCED_RANGE: return(ERR_BAD_FILENAME);

case ERROR_META_EXPANSION_TOO_LONG: return(ERR_BAD_FILENAME);

case ERROR_TOO_MANY_HANDLES: return(ERR_TOO_MANY_HANDLES);

case ERROR_TOO_MANY_OPEN_FILES: return(ERR_TOO_MANY_HANDLES);

case ERROR_NO_MORE_SEARCH_HANDLES: return(ERR_TOO_MANY_HANDLES);

case ERROR_SEEK_ON_DEVICE: return(ERR_SEEK_ERROR);

case ERROR_NEGATIVE_SEEK: return(ERR_SEEK_OUT_OF_RANGE);

case ERROR_DEL_CURRENT_DIRECTORY: return(ERR_DEL_CWD);

case ERROR_WRITE_PROTECT: return(ERR_WRITE_PROTECT_ERROR);

case ERROR_WRITE_FAULT: return(ERR_WRITE_FAULT);

case ERROR_LOCK_VIOLATION: return(ERR_LOCK_VIOLATION);

case ERROR_GEN_FAILURE: return(ERR_GENERAL_FAILURE);

case ERROR_UNCERTAIN_MEDIA: return(ERR_UNCERTAIN_MEDIA);

case ERROR_PROTECTION_VIOLATION: return(ERR_PROT_VIOLATION);

case ERROR_BROKEN_PIPE: return(ERR_BROKEN_PIPE);

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(ERR_PHYSFS_BAD_OS_CALL);

default: return(ERR_OS2_GENERIC);

} /* switch */

return(NULL);

} /* get_os2_error_string */

static APIRET os2err(APIRET retval)

{

char buf[128];

const char *err = get_os2_error_string(retval);

if (err == ERR_OS2_GENERIC)

{

snprintf(buf, ERR_OS2_GENERIC, (int) retval);

err = buf;

} /* if */

if (err != NULL)

__PHYSFS_setError(err);

} /* os2err */

/* (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(spec, &hdir, FILE_DIRECTORY,

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

if (rc == NO_ERROR)

{

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

{

if (__PHYSFS_platformStricmp(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 */

static char *baseDir = NULL;

int __PHYSFS_platformInit(void)

{

char buf[CCHMAXPATH];

APIRET rc;

PTIB ptib;

PPIB ppib;

assert(baseDir == NULL);

BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&ptib, &ppib)) != NO_ERROR, NULL, 0);

rc = DosQueryModuleName(ppib->pib_hmte, sizeof (buf), (PCHAR) buf);

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0);

/* 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(1); /* success. */

} /* __PHYSFS_platformInit */

int __PHYSFS_platformDeinit(void)

{

assert(baseDir != NULL);

free(baseDir);

baseDir = NULL;

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)

{

ULONG ul1, ul2;

APIRET rc;

HFILE hfile = NULLHANDLE;

char drivename[3] = { 'A' + drive, ':', '\0' };

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);

BAIL_IF_MACRO(rc != NO_ERROR, NULL, 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 */

char **__PHYSFS_platformDetectAvailableCDs(void)

{

ULONG dummy;

ULONG drivemap;

ULONG i, bit;

APIRET rc;

char **retval;

retval = (char **) malloc(sizeof (char *));

BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);

*retval = NULL;

rc = DosQueryCurrentDisk(&dummy, &drivemap);

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, retval);

{

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

{

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

{

char **tmp = realloc(retval, sizeof (char *) * (cd_count + 1));

if (tmp)

{

char *str = (char *) malloc(4);

retval = tmp;

retval[cd_count - 1] = str;

if (str)

{

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

str[1] = ':';

str[2] = '\\';

str[3] = '\0';

cd_count++;

} /* if */

} /* if */

} /* if */

} /* if */

} /* for */

return(retval);

} /* __PHYSFS_platformDetectAvailableCDs */

char *__PHYSFS_platformCalcBaseDir(const char *argv0)

{

char *retval = (char *) malloc(strlen(baseDir) + 1);

BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);

strcpy(retval, baseDir); /* calculated at init time. */

return(retval);

} /* __PHYSFS_platformCalcBaseDir */

char *__PHYSFS_platformGetUserName(void)

{

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

} /* __PHYSFS_platformGetUserName */

char *__PHYSFS_platformGetUserDir(void)

{

return(__PHYSFS_platformCalcBaseDir(NULL));

} /* __PHYSFS_platformGetUserDir */

int __PHYSFS_platformStricmp(const char *x, const char *y)

{

int ux, uy;

do

{

ux = toupper((int) *x);

uy = toupper((int) *y);

if (ux > uy)

return(1);

else if (ux < uy)

return(-1);

x++;

y++;

} while ((ux) && (uy));

return(0);

} /* __PHYSFS_platformStricmp */

int __PHYSFS_platformStrnicmp(const char *x, const char *y, PHYSFS_uint32 len)

{

int ux, uy;

if (!len)

return(0);

do

{

ux = toupper((int) *x);

uy = toupper((int) *y);

if (ux > uy)

return(1);

else if (ux < uy)

return(-1);

x++;

y++;

len--;

} while ((ux) && (uy) && (len));

return(0);

} /* __PHYSFS_platformStrnicmp */

int __PHYSFS_platformExists(const char *fname)

{

FILESTATUS3 fs;

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

return(os2err(rc) == NO_ERROR);

} /* __PHYSFS_platformExists */

int __PHYSFS_platformIsSymLink(const char *fname)

{

return(0); /* no symlinks in OS/2. */

} /* __PHYSFS_platformIsSymlink */

int __PHYSFS_platformIsDirectory(const char *fname)

{

FILESTATUS3 fs;

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

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0)

return((fs.attrFile & FILE_DIRECTORY) != 0);

} /* __PHYSFS_platformIsDirectory */

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 = malloc(len);

char *p;

BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);

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 */

LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,

int omitSymLinks)

{

char spec[CCHMAXPATH];

HDIR hdir = HDIR_CREATE;

ULONG count = 1;

APIRET rc;

rc = DosFindFirst(spec, &hdir,

FILE_DIRECTORY | FILE_ARCHIVED |

FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM,

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0);

while (count == 1)

{

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

ret = __PHYSFS_addToLinkedStringList(ret, &p, fb.achName, -1);

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);

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, NULL);

/* 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 *) malloc(pathSize + 3); /* plus "x:\\" */

BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);

/* Actually get the string this time. */

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

if (os2err(rc) != NO_ERROR)

{

free(retval);

return(NULL);

} /* if */

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

retval[1] = ':';

retval[2] = '\\';

return(retval);

} /* __PHYSFS_platformCurrentDir */

char *__PHYSFS_platformRealPath(const char *path)

{

char buf[CCHMAXPATH];

char *retval;

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, NULL);

retval = (char *) malloc(strlen(buf) + 1);

BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);

strcpy(retval, buf);

return(retval);

} /* __PHYSFS_platformRealPath */

int __PHYSFS_platformMkDir(const char *path)

{

return(os2err(DosCreateDir(path, NULL)) == NO_ERROR);

} /* __PHYSFS_platformMkDir */

void *__PHYSFS_platformOpenRead(const 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.

*/

os2err(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_ACCESS_READONLY, NULL));

return((void *) hfile);

} /* __PHYSFS_platformOpenRead */

void *__PHYSFS_platformOpenWrite(const 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.

*/

os2err(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_ACCESS_READWRITE, NULL));

return((void *) hfile);

} /* __PHYSFS_platformOpenWrite */

void *__PHYSFS_platformOpenAppend(const char *filename)

{

ULONG dummy = 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.

*/

rc = os2err(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_ACCESS_READWRITE, NULL));

if (rc == NO_ERROR)

{

if (os2err(DosSetFilePtr(hfile, 0, FILE_END, &dummy)) != NO_ERROR)

{

DosClose(hfile);

hfile = NULLHANDLE;

} /* if */

} /* if */

return((void *) hfile);

} /* __PHYSFS_platformOpenAppend */

PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,

PHYSFS_uint32 size, PHYSFS_uint32 count)

{

HFILE hfile = (HFILE) opaque;

PHYSFS_sint64 retval;

ULONG br;

for (retval = 0; retval < count; retval++)

{

if (br < size)

{

return(retval);

} /* if */

} /* for */

return(retval);

} /* __PHYSFS_platformRead */

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

PHYSFS_uint32 size, PHYSFS_uint32 count)

{

HFILE hfile = (HFILE) opaque;

PHYSFS_sint64 retval;

ULONG bw;

for (retval = 0; retval < count; retval++)

{

if (bw < size)

{

DosSetFilePtr(hfile, -bw, FILE_CURRENT, &bw); /* try to cleanup. */

return(retval);

} /* if */

} /* for */

return(retval);

} /* __PHYSFS_platformWrite */

int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)

{

ULONG dummy;

HFILE hfile = (HFILE) opaque;

LONG dist = (LONG) pos;

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

BAIL_IF_MACRO((PHYSFS_uint64) dist != pos, ERR_SEEK_OUT_OF_RANGE, 0);

return(os2err(DosSetFilePtr(hfile, dist, FILE_BEGIN, &dummy)) == NO_ERROR);

} /* __PHYSFS_platformSeek */

PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)

{

ULONG pos;

HFILE hfile = (HFILE) opaque;

APIRET rc = os2err(DosSetFilePtr(hfile, 0, FILE_CURRENT, &pos));

BAIL_IF_MACRO(rc != NO_ERROR, NULL, -1);

return((PHYSFS_sint64) pos);

} /* __PHYSFS_platformTell */

PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)

{

FILESTATUS3 fs;

HFILE hfile = (HFILE) opaque;

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

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, -1);

return((PHYSFS_sint64) fs.cbFile);

} /* __PHYSFS_platformFileLength */

int __PHYSFS_platformEOF(void *opaque)

{

PHYSFS_sint64 len, pos;

len = __PHYSFS_platformFileLength(opaque);

BAIL_IF_MACRO(len == -1, NULL, 1); /* (*shrug*) */

pos = __PHYSFS_platformTell(opaque);

BAIL_IF_MACRO(pos == -1, NULL, 1); /* (*shrug*) */

return(pos >= len);

} /* __PHYSFS_platformEOF */

int __PHYSFS_platformFlush(void *opaque)

{

} /* __PHYSFS_platformFlush */

int __PHYSFS_platformClose(void *opaque)

{

return(os2err(DosClose((HFILE) opaque) == NO_ERROR));

} /* __PHYSFS_platformClose */

int __PHYSFS_platformDelete(const char *path)

{

if (__PHYSFS_platformIsDirectory(path))

return(os2err(DosDeleteDir(path)) == NO_ERROR);

return(os2err(DosDelete(path) == NO_ERROR));

} /* __PHYSFS_platformDelete */

PHYSFS_sint64 __PHYSFS_platformGetLastModTime(const char *fname)

{

struct tm tm;

FILESTATUS3 fs;

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

BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, -1);

/* Convert to a format that mktime() can grok... */

tm.tm_sec = ((PHYSFS_uint32) fs.ftimeLastWrite.twosecs) * 2;

tm.tm_min = fs.ftimeLastWrite.minutes;

tm.tm_hour = fs.ftimeLastWrite.hours;

tm.tm_mday = fs.fdateLastWrite.day;

tm.tm_mon = fs.fdateLastWrite.month;

tm.tm_year = ((PHYSFS_uint32) fs.fdateLastWrite.year) + 80;

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

tm.tm_yday = -1;

tm.tm_isdst = -1;

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

retval = (PHYSFS_sint64) mktime(&tm);

BAIL_IF_MACRO(retval == -1, strerror(errno), -1);

return(retval);

} /* __PHYSFS_platformGetLastModTime */

/* Much like my college days, try to sleep for 10 milliseconds at a time... */

void __PHYSFS_platformTimeslice(void)

{

DosSleep(10);

} /* __PHYSFS_platformTimeslice(void) */

PHYSFS_uint64 __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.

*/

BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&ptib, &ppib)) != NO_ERROR, 0, 0);

return((PHYSFS_uint64) ptib->tib_ordinal);

} /* __PHYSFS_platformGetThreadID */

void *__PHYSFS_platformCreateMutex(void)

{

HMTX hmtx = NULLHANDLE;

os2err(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_ call os2err() (which sets the physfs error msg) in here! */

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

} /* __PHYSFS_platformGrabMutex */

void __PHYSFS_platformReleaseMutex(void *mutex)

{

DosReleaseMutexSem((HMTX) mutex);

} /* __PHYSFS_platformReleaseMutex */

#endif /* defined OS2 */

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