File: sys_unix.c

package info (click to toggle)
uhexen2 1.5.6+dfsg-1
  • links: PTS
  • area: contrib
  • in suites: jessie, jessie-kfreebsd
  • size: 16,340 kB
  • ctags: 23,477
  • sloc: ansic: 188,956; asm: 14,958; makefile: 3,475; sh: 3,325; objc: 330; pascal: 213; cpp: 19
file content (614 lines) | stat: -rw-r--r-- 12,530 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
/*
 * sys_unix.c -- Unix system interface code
 * $Id: sys_unix.c 4767 2012-06-16 20:48:51Z sezero $
 *
 * Copyright (C) 1996-1997  Id Software, Inc.
 * Copyright (C) 2001 contributors of the Anvil of Thyrion project
 * Copyright (C) 2004-2005  Steven Atkinson <stevenaaus@yahoo.com>
 * Copyright (C) 2005-2012  O.Sezer <sezero@users.sourceforge.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "quakedef.h"
#include "userdir.h"

#include <errno.h>
#include <unistd.h>
#if USE_PASSWORD_FILE && DO_USERDIRS
#include <pwd.h>
#endif	/* USE_PASSWORD_FILE */
#include <sys/stat.h>
#include <sys/time.h>
#include <dirent.h>
#include <fnmatch.h>
#include <time.h>
#include <utime.h>


// heapsize: minimum 8 mb, standart 16 mb, max is 32 mb.
// -heapsize argument will abide by these min/max settings
// unless the -forcemem argument is used
#define MIN_MEM_ALLOC	0x0800000
#define STD_MEM_ALLOC	0x1000000
#define MAX_MEM_ALLOC	0x2000000

cvar_t		sys_nostdout = {"sys_nostdout", "0", CVAR_NONE};
int		devlog;	/* log the Con_DPrintf and Sys_DPrintf content when !developer.integer */

static double		starttime;
static qboolean		first = true;


/*
===============================================================================

FILE IO

===============================================================================
*/

int Sys_mkdir (const char *path, qboolean crash)
{
	int rc = mkdir (path, 0777);
	if (rc != 0 && errno == EEXIST)
		rc = 0;
	if (rc != 0 && crash)
	{
		rc = errno;
		Sys_Error("Unable to create directory %s: %s", path, strerror(rc));
	}
	return rc;
}

int Sys_rmdir (const char *path)
{
	return rmdir(path);
}

int Sys_unlink (const char *path)
{
	return unlink(path);
}

int Sys_rename (const char *oldp, const char *newp)
{
	return rename(oldp, newp);
}

long Sys_filesize (const char *path)
{
	struct stat	st;

	if (stat(path, &st) != 0)
		return -1;
	if (! S_ISREG(st.st_mode))
		return -1;

	return (long) st.st_size;
}

int Sys_FileType (const char *path)
{
	/*
	if (access(path, R_OK) == -1)
		return 0;
	*/
	struct stat	st;

	if (stat(path, &st) != 0)
		return FS_ENT_NONE;
	if (S_ISDIR(st.st_mode))
		return FS_ENT_DIRECTORY;
	if (S_ISREG(st.st_mode))
		return FS_ENT_FILE;

	return FS_ENT_NONE;
}

#define	COPY_READ_BUFSIZE		8192	/* BUFSIZ */
int Sys_CopyFile (const char *frompath, const char *topath)
{
	char	buf[COPY_READ_BUFSIZE];
	FILE	*in, *out;
	struct stat	st;
	int		err = 0;
//	off_t		remaining, count;
	size_t		remaining, count;

	if (stat(frompath, &st) != 0)
	{
		Con_Printf ("%s: unable to stat %s\n", __thisfunc__, frompath);
		return 1;
	}
	in = fopen (frompath, "rb");
	if (!in)
	{
		Con_Printf ("%s: unable to open %s\n", __thisfunc__, frompath);
		return 1;
	}
	out = fopen (topath, "wb");
	if (!out)
	{
		Con_Printf ("%s: unable to create %s\n", __thisfunc__, topath);
		fclose (in);
		return 1;
	}

	remaining = st.st_size;
	memset (buf, 0, sizeof(buf));
	while (remaining)
	{
		if (remaining < sizeof(buf))
			count = remaining;
		else
			count = sizeof(buf);

		fread (buf, 1, count, in);
		err = ferror (in);
		if (err)
			break;

		fwrite (buf, 1, count, out);
		err = ferror (out);
		if (err)
			break;

		remaining -= count;
	}

	fclose (in);
	fclose (out);

	if (!err)
	{
	// restore the file's timestamp
		struct utimbuf		tm;
		tm.actime = time (NULL);
		tm.modtime = st.st_mtime;
		utime (topath, &tm);
	}

	return err;
}

/*
=================================================
simplified findfirst/findnext implementation:
Sys_FindFirstFile and Sys_FindNextFile return
filenames only, not a dirent struct. this is
what we presently need in this engine.
=================================================
*/
static DIR		*finddir;
static struct dirent	*finddata;
static char		*findpath, *findpattern;

const char *Sys_FindFirstFile (const char *path, const char *pattern)
{
	if (finddir)
		Sys_Error ("Sys_FindFirst without FindClose");

	finddir = opendir (path);
	if (!finddir)
		return NULL;

	findpattern = Z_Strdup (pattern);
	findpath = Z_Strdup (path);

	return Sys_FindNextFile();
}

const char *Sys_FindNextFile (void)
{
	struct stat	test;

	if (!finddir)
		return NULL;

	while ((finddata = readdir(finddir)) != NULL)
	{
		if (!fnmatch (findpattern, finddata->d_name, FNM_PATHNAME))
		{
			if ( (stat(va("%s/%s", findpath, finddata->d_name), &test) == 0)
						&& S_ISREG(test.st_mode))
				return finddata->d_name;
		}
	}

	return NULL;
}

void Sys_FindClose (void)
{
	if (finddir != NULL)
	{
		closedir(finddir);
		finddir = NULL;
	}
	if (findpath != NULL)
	{
		Z_Free (findpath);
		findpath = NULL;
	}
	if (findpattern != NULL)
	{
		Z_Free (findpattern);
		findpattern = NULL;
	}
}

/*
===============================================================================

SYSTEM IO

===============================================================================
*/

#define ERROR_PREFIX	"\nFATAL ERROR: "
void Sys_Error (const char *error, ...)
{
	va_list		argptr;
	char		text[MAX_PRINTMSG];
	const char	text2[] = ERROR_PREFIX;
	const unsigned char	*p;

	va_start (argptr, error);
	q_vsnprintf (text, sizeof(text), error, argptr);
	va_end (argptr);

	if (sv_logfile)
	{
		fprintf (sv_logfile, ERROR_PREFIX "%s\n\n", text);
		fflush (sv_logfile);
	}

	for (p = (const unsigned char *) text2; *p; p++)
		putc (*p, stderr);
	for (p = (const unsigned char *) text ; *p; p++)
		putc (*p, stderr);
	putc ('\n', stderr);
	putc ('\n', stderr);

	exit (1);
}

void Sys_PrintTerm (const char *msgtxt)
{
	const unsigned char	*p;

	if (sys_nostdout.integer)
		return;

	for (p = (const unsigned char *) msgtxt; *p; p++)
		putc (*p, stdout);
}

void Sys_Quit (void)
{
	exit (0);
}


/*
================
Sys_DoubleTime
================
*/
double Sys_DoubleTime (void)
{
	struct timeval	tp;
	double		now;

	gettimeofday (&tp, NULL);

	now = tp.tv_sec + tp.tv_usec / 1e6;

	if (first)
	{
		first = false;
		starttime = now;
		return 0.0;
	}

	return now - starttime;
}

char *Sys_DateTimeString (char *buf)
{
	static char strbuf[24];
	time_t t;
	struct tm *l;
	int val;

	if (!buf) buf = strbuf;

	t = time(NULL);
	l = localtime(&t);

	val = l->tm_mon + 1;	/* tm_mon: months since January [0,11] */
	buf[0] = val / 10 + '0';
	buf[1] = val % 10 + '0';
	buf[2] = '/';
	val = l->tm_mday;
	buf[3] = val / 10 + '0';
	buf[4] = val % 10 + '0';
	buf[5] = '/';
	val = l->tm_year / 100 + 19;	/* tm_year: #years since 1900. */
	buf[6] = val / 10 + '0';
	buf[7] = val % 10 + '0';
	val = l->tm_year % 100;
	buf[8] = val / 10 + '0';
	buf[9] = val % 10 + '0';

	buf[10] = ' ';

	val = l->tm_hour;
	buf[11] = val / 10 + '0';
	buf[12] = val % 10 + '0';
	buf[13] = ':';
	val = l->tm_min;
	buf[14] = val / 10 + '0';
	buf[15] = val % 10 + '0';
	buf[16] = ':';
	val = l->tm_sec;
	buf[17] = val / 10 + '0';
	buf[18] = val % 10 + '0';

	buf[19] = '\0';

	return buf;
}


/*
================
Sys_ConsoleInput
================
*/
const char *Sys_ConsoleInput (void)
{
	static char	con_text[256];
	static int	textlen;
	char		c;
	fd_set		set;
	struct timeval	timeout;

	FD_ZERO (&set);
	FD_SET (0, &set);	// stdin
	timeout.tv_sec = 0;
	timeout.tv_usec = 0;

	while (select (1, &set, NULL, NULL, &timeout))
	{
		read (0, &c, 1);
		if (c == '\n' || c == '\r')
		{
			con_text[textlen] = '\0';
			textlen = 0;
			return con_text;
		}
		else if (c == 8)
		{
			if (textlen)
			{
				textlen--;
				con_text[textlen] = '\0';
			}
			continue;
		}
		con_text[textlen] = c;
		textlen++;
		if (textlen < (int) sizeof(con_text))
			con_text[textlen] = '\0';
		else
		{
		// buffer is full
			textlen = 0;
			con_text[0] = '\0';
			Sys_PrintTerm("\nConsole input too long!\n");
			break;
		}
	}

	return NULL;
}


static int Sys_GetBasedir (char *argv0, char *dst, size_t dstsize)
{
	char	*tmp;

	if (getcwd(dst, dstsize - 1) == NULL)
		return -1;

	tmp = dst;
	while (*tmp != 0)
		tmp++;
	while (*tmp == 0 && tmp != dst)
	{
		--tmp;
		if (tmp != dst && *tmp == '/')
			*tmp = 0;
	}

	return 0;
}

#if DO_USERDIRS
static int Sys_GetUserdir (char *dst, size_t dstsize)
{
	size_t		n;
	const char	*home_dir = NULL;
#if USE_PASSWORD_FILE
	struct passwd	*pwent;

	pwent = getpwuid( getuid() );
	if (pwent == NULL)
		perror("getpwuid");
	else
		home_dir = pwent->pw_dir;
#endif
	if (home_dir == NULL)
		home_dir = getenv("HOME");
	if (home_dir == NULL)
		return 1;

/* what would be a maximum path for a file in the user's directory...
 * $HOME/AOT_USERDIR/game_dir/dirname1/dirname2/dirname3/filename.ext
 * still fits in the MAX_OSPATH == 256 definition, but just in case.
 */
	n = strlen(home_dir) + strlen(AOT_USERDIR) + 50;
	if (n >= dstsize)
	{
		Sys_Error ("%s: Insufficient bufsize %d. Need at least %d.",
					__thisfunc__, (int)dstsize, (int)n);
	}

	q_snprintf (dst, dstsize, "%s/%s", home_dir, AOT_USERDIR);
	return 0;
}
#endif	/* DO_USERDIRS */

static void PrintVersion (void)
{
	Sys_Printf ("HexenWorld server %4.2f (%s)\n", ENGINE_VERSION, PLATFORM_STRING);
	Sys_Printf ("Hammer of Thyrion, release %s (%s)\n", HOT_VERSION_STR, HOT_VERSION_REL_DATE);
}

/*
===============================================================================

MAIN

===============================================================================
*/
static quakeparms_t	parms;
static char	cwd[MAX_OSPATH];
#if DO_USERDIRS
static char	userdir[MAX_OSPATH];
#endif

int main (int argc, char **argv)
{
	int			i;
	double		newtime, time, oldtime;

	PrintVersion();

	if (argc > 1)
	{
		for (i = 1; i < argc; i++)
		{
			if ( !(strcmp(argv[i], "-v")) || !(strcmp(argv[i], "-version" )) ||
				!(strcmp(argv[i], "--version")) )
			{
				exit(0);
			}
			else if ( !(strcmp(argv[i], "-h")) || !(strcmp(argv[i], "-help" )) ||
				  !(strcmp(argv[i], "-?")) || !(strcmp(argv[i], "--help")) )
			{
				Sys_PrintTerm ("See the documentation for details\n");
				exit (0);
			}
		}
	}

	memset (cwd, 0, sizeof(cwd));
	if (Sys_GetBasedir(argv[0], cwd, sizeof(cwd)) != 0)
		Sys_Error ("Couldn't determine current directory");

#if DO_USERDIRS
	memset (userdir, 0, sizeof(userdir));
	if (Sys_GetUserdir(userdir, sizeof(userdir)) != 0)
		Sys_Error ("Couldn't determine userspace directory");
	Sys_mkdir(userdir, true);
#endif

	/* initialize the host params */
	memset (&parms, 0, sizeof(parms));
	parms.basedir = "/usr/share/games/hexen2";
#if DO_USERDIRS
	parms.userdir = userdir;
#else
	parms.userdir = cwd;
#endif
	parms.argc = argc;
	parms.argv = argv;
	host_parms = &parms;

	devlog = COM_CheckParm("-devlog");

	Sys_Printf("basedir is: %s\n", parms.basedir);
	Sys_Printf("userdir is: %s\n", parms.userdir);

	COM_ValidateByteorder ();

	parms.memsize = STD_MEM_ALLOC;

	i = COM_CheckParm ("-heapsize");
	if (i && i < com_argc-1)
	{
		parms.memsize = atoi (com_argv[i+1]) * 1024;

		if ((parms.memsize > MAX_MEM_ALLOC) && !(COM_CheckParm ("-forcemem")))
		{
			Sys_Printf ("Requested memory (%d Mb) too large, using the default maximum.\n", parms.memsize/(1024*1024));
			Sys_Printf ("If you are sure, use the -forcemem switch.\n");
			parms.memsize = MAX_MEM_ALLOC;
		}
		else if ((parms.memsize < MIN_MEM_ALLOC) && !(COM_CheckParm ("-forcemem")))
		{
			Sys_Printf ("Requested memory (%d Mb) too little, using the default minimum.\n", parms.memsize/(1024*1024));
			Sys_Printf ("If you are sure, use the -forcemem switch.\n");
			parms.memsize = MIN_MEM_ALLOC;
		}
	}

	parms.membase = malloc (parms.memsize);

	if (!parms.membase)
		Sys_Error ("Insufficient memory.\n");

	SV_Init();

// report the filesystem to the user
	Sys_Printf("gamedir is: %s\n", FS_GetGamedir());
	Sys_Printf("userdir is: %s\n", FS_GetUserdir());

// run one frame immediately for first heartbeat
	SV_Frame (HX_FRAME_TIME);

//
// main loop
//
	oldtime = Sys_DoubleTime () - HX_FRAME_TIME;
	while (1)
	{
		if (NET_CheckReadTimeout(0, 10000) == -1)
			continue;

		newtime = Sys_DoubleTime ();
		time = newtime - oldtime;
		oldtime = newtime;

		SV_Frame (time);
	}

	return 0;
}