summaryrefslogtreecommitdiffstats
path: root/unix/tclUnixTest.c
blob: e6812a716afa530e1e8898f563c968bbd0301c11 (plain)
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
/* 
 * tclUnixTest.c --
 *
 *	Contains platform specific test commands for the Unix platform.
 *
 * Copyright (c) 1996 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * SCCS: @(#) tclUnixTest.c 1.5 97/10/31 17:23:42
 */

#include "tclInt.h"
#include "tclPort.h"

/*
 * The following macros convert between TclFile's and fd's.  The conversion
 * simple involves shifting fd's up by one to ensure that no valid fd is ever
 * the same as NULL.  Note that this code is duplicated from tclUnixPipe.c
 */

#define MakeFile(fd) ((TclFile)((fd)+1))
#define GetFd(file) (((int)file)-1)

/*
 * The stuff below is used to keep track of file handlers created and
 * exercised by the "testfilehandler" command.
 */

typedef struct Pipe {
    TclFile readFile;		/* File handle for reading from the
				 * pipe.  NULL means pipe doesn't exist yet. */
    TclFile writeFile;		/* File handle for writing from the
				 * pipe. */
    int readCount;		/* Number of times the file handler for
				 * this file has triggered and the file
				 * was readable. */
    int writeCount;		/* Number of times the file handler for
				 * this file has triggered and the file
				 * was writable. */
} Pipe;

#define MAX_PIPES 10
static Pipe testPipes[MAX_PIPES];

/*
 * Forward declarations of procedures defined later in this file:
 */

static void		TestFileHandlerProc _ANSI_ARGS_((ClientData clientData,
			    int mask));
static int		TestfilehandlerCmd _ANSI_ARGS_((ClientData dummy,
			    Tcl_Interp *interp, int argc, char **argv));
static int		TestfilewaitCmd _ANSI_ARGS_((ClientData dummy,
			    Tcl_Interp *interp, int argc, char **argv));
static int		TestfindexecutableCmd _ANSI_ARGS_((ClientData dummy,
			    Tcl_Interp *interp, int argc, char **argv));
static int		TestgetopenfileCmd _ANSI_ARGS_((ClientData dummy,
			    Tcl_Interp *interp, int argc, char **argv));
int			TclplatformtestInit _ANSI_ARGS_((Tcl_Interp *interp));

/*
 *----------------------------------------------------------------------
 *
 * TclplatformtestInit --
 *
 *	Defines commands that test platform specific functionality for
 *	Unix platforms.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	Defines new commands.
 *
 *----------------------------------------------------------------------
 */

int
TclplatformtestInit(interp)
    Tcl_Interp *interp;		/* Interpreter to add commands to. */
{
    Tcl_CreateCommand(interp, "testfilehandler", TestfilehandlerCmd,
            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateCommand(interp, "testfilewait", TestfilewaitCmd,
            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateCommand(interp, "testfindexecutable", TestfindexecutableCmd,
            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateCommand(interp, "testgetopenfile", TestgetopenfileCmd,
            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestfilehandlerCmd --
 *
 *	This procedure implements the "testfilehandler" command. It is
 *	used to test Tcl_CreateFileHandler, Tcl_DeleteFileHandler, and
 *	TclWaitForFile.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestfilehandlerCmd(clientData, interp, argc, argv)
    ClientData clientData;		/* Not used. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int argc;				/* Number of arguments. */
    char **argv;			/* Argument strings. */
{
    Pipe *pipePtr;
    int i, mask, timeout;
    static int initialized = 0;
    char buffer[4000];
    TclFile file;

    /*
     * NOTE: When we make this code work on Windows also, the following
     * variable needs to be made Unix-only.
     */
    
    if (!initialized) {
	for (i = 0; i < MAX_PIPES; i++) {
	    testPipes[i].readFile = NULL;
	}
	initialized = 1;
    }

    if (argc < 2) {
	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
                " option ... \"", (char *) NULL);
        return TCL_ERROR;
    }
    pipePtr = NULL;
    if (argc >= 3) {
	if (Tcl_GetInt(interp, argv[2], &i) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (i >= MAX_PIPES) {
	    Tcl_AppendResult(interp, "bad index ", argv[2], (char *) NULL);
	    return TCL_ERROR;
	}
	pipePtr = &testPipes[i];
    }

    if (strcmp(argv[1], "close") == 0) {
	for (i = 0; i < MAX_PIPES; i++) {
	    if (testPipes[i].readFile != NULL) {
		TclpCloseFile(testPipes[i].readFile);
		testPipes[i].readFile = NULL;
		TclpCloseFile(testPipes[i].writeFile);
		testPipes[i].writeFile = NULL;
	    }
	}
    } else if (strcmp(argv[1], "clear") == 0) {
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " clear index\"", (char *) NULL);
	    return TCL_ERROR;
	}
	pipePtr->readCount = pipePtr->writeCount = 0;
    } else if (strcmp(argv[1], "counts") == 0) {
	char buf[30];
	
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " counts index\"", (char *) NULL);
	    return TCL_ERROR;
	}
	sprintf(buf, "%d %d", pipePtr->readCount, pipePtr->writeCount);
	Tcl_SetResult(interp, buf, TCL_VOLATILE);
    } else if (strcmp(argv[1], "create") == 0) {
	if (argc != 5) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " create index readMode writeMode\"",
                    (char *) NULL);
	    return TCL_ERROR;
	}
	if (pipePtr->readFile == NULL) {
	    if (!TclpCreatePipe(&pipePtr->readFile, &pipePtr->writeFile)) {
		Tcl_AppendResult(interp, "couldn't open pipe: ",
			Tcl_PosixError(interp), (char *) NULL);
		return TCL_ERROR;
	    }
#ifdef O_NONBLOCK
	    fcntl(GetFd(pipePtr->readFile), F_SETFL, O_NONBLOCK);
	    fcntl(GetFd(pipePtr->writeFile), F_SETFL, O_NONBLOCK);
#else
	    Tcl_SetResult(interp, "can't make pipes non-blocking",
		    TCL_STATIC);
	    return TCL_ERROR;
#endif
	}
	pipePtr->readCount = 0;
	pipePtr->writeCount = 0;

	if (strcmp(argv[3], "readable") == 0) {
	    Tcl_CreateFileHandler(GetFd(pipePtr->readFile), TCL_READABLE,
		    TestFileHandlerProc, (ClientData) pipePtr);
	} else if (strcmp(argv[3], "off") == 0) {
	    Tcl_DeleteFileHandler(GetFd(pipePtr->readFile));
	} else if (strcmp(argv[3], "disabled") == 0) {
	    Tcl_CreateFileHandler(GetFd(pipePtr->readFile), 0,
		    TestFileHandlerProc, (ClientData) pipePtr);
	} else {
	    Tcl_AppendResult(interp, "bad read mode \"", argv[3], "\"",
		    (char *) NULL);
	    return TCL_ERROR;
	}
	if (strcmp(argv[4], "writable") == 0) {
	    Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), TCL_WRITABLE,
		    TestFileHandlerProc, (ClientData) pipePtr);
	} else if (strcmp(argv[4], "off") == 0) {
	    Tcl_DeleteFileHandler(GetFd(pipePtr->writeFile));
	} else if (strcmp(argv[4], "disabled") == 0) {
	    Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), 0,
		    TestFileHandlerProc, (ClientData) pipePtr);
	} else {
	    Tcl_AppendResult(interp, "bad read mode \"", argv[4], "\"",
		    (char *) NULL);
	    return TCL_ERROR;
	}
    } else if (strcmp(argv[1], "empty") == 0) {
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " empty index\"", (char *) NULL);
	    return TCL_ERROR;
	}

        while (read(GetFd(pipePtr->readFile), buffer, 4000) > 0) {
            /* Empty loop body. */
        }
    } else if (strcmp(argv[1], "fill") == 0) {
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " empty index\"", (char *) NULL);
	    return TCL_ERROR;
	}

	memset((VOID *) buffer, 'a', 4000);
        while (write(GetFd(pipePtr->writeFile), buffer, 4000) > 0) {
            /* Empty loop body. */
        }
    } else if (strcmp(argv[1], "fillpartial") == 0) {
	char buf[30];
	
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " empty index\"", (char *) NULL);
	    return TCL_ERROR;
	}

	memset((VOID *) buffer, 'b', 10);
	sprintf(buf, "%d", write(GetFd(pipePtr->writeFile), buffer, 10));
	Tcl_SetResult(interp, buf, TCL_VOLATILE);
    } else if (strcmp(argv[1], "oneevent") == 0) {
	Tcl_DoOneEvent(TCL_FILE_EVENTS|TCL_DONT_WAIT);
    } else if (strcmp(argv[1], "wait") == 0) {
	if (argc != 5) {
	    Tcl_AppendResult(interp, "wrong # arguments: should be \"",
                    argv[0], " wait index readable/writable timeout\"",
                    (char *) NULL);
	    return TCL_ERROR;
	}
	if (pipePtr->readFile == NULL) {
	    Tcl_AppendResult(interp, "pipe ", argv[2], " doesn't exist",
		    (char *) NULL);
	    return TCL_ERROR;
	}
	if (strcmp(argv[3], "readable") == 0) {
	    mask = TCL_READABLE;
	    file = pipePtr->readFile;
	} else {
	    mask = TCL_WRITABLE;
	    file = pipePtr->writeFile;
	}
	if (Tcl_GetInt(interp, argv[4], &timeout) != TCL_OK) {
	    return TCL_ERROR;
	}
	i = TclUnixWaitForFile(GetFd(file), mask, timeout);
	if (i & TCL_READABLE) {
	    Tcl_AppendElement(interp, "readable");
	}
	if (i & TCL_WRITABLE) {
	    Tcl_AppendElement(interp, "writable");
	}
    } else if (strcmp(argv[1], "windowevent") == 0) {
	Tcl_DoOneEvent(TCL_WINDOW_EVENTS|TCL_DONT_WAIT);
    } else {
	Tcl_AppendResult(interp, "bad option \"", argv[1],
		"\": must be close, clear, counts, create, empty, fill, ",
		"fillpartial, oneevent, wait, or windowevent",
		(char *) NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

static void TestFileHandlerProc(clientData, mask)
    ClientData clientData;	/* Points to a Pipe structure. */
    int mask;			/* Indicates which events happened:
				 * TCL_READABLE or TCL_WRITABLE. */
{
    Pipe *pipePtr = (Pipe *) clientData;

    if (mask & TCL_READABLE) {
	pipePtr->readCount++;
    }
    if (mask & TCL_WRITABLE) {
	pipePtr->writeCount++;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TestfilewaitCmd --
 *
 *	This procedure implements the "testfilewait" command. It is
 *	used to test TclUnixWaitForFile.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestfilewaitCmd(clientData, interp, argc, argv)
    ClientData clientData;		/* Not used. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int argc;				/* Number of arguments. */
    char **argv;			/* Argument strings. */
{
    int mask, result, timeout;
    Tcl_Channel channel;
    int fd;
    ClientData data;

    if (argc != 4) {
	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
		" file readable|writable|both timeout\"", (char *) NULL);
	return TCL_ERROR;
    }
    channel = Tcl_GetChannel(interp, argv[1], NULL);
    if (channel == NULL) {
	return TCL_ERROR;
    }
    if (strcmp(argv[2], "readable") == 0) {
	mask = TCL_READABLE;
    } else if (strcmp(argv[2], "writable") == 0){
	mask = TCL_WRITABLE;
    } else if (strcmp(argv[2], "both") == 0){
	mask = TCL_WRITABLE|TCL_READABLE;
    } else {
	Tcl_AppendResult(interp, "bad argument \"", argv[2],
		"\": must be readable, writable, or both", (char *) NULL);
	return TCL_ERROR;
    }
    if (Tcl_GetChannelHandle(channel, 
	    (mask & TCL_READABLE) ? TCL_READABLE : TCL_WRITABLE,
	    (ClientData*) &data) != TCL_OK) {
	Tcl_SetResult(interp, "couldn't get channel file", TCL_STATIC);
	return TCL_ERROR;
    }
    fd = (int) data;
    if (Tcl_GetInt(interp, argv[3], &timeout) != TCL_OK) {
	return TCL_ERROR;
    }
    result = TclUnixWaitForFile(fd, mask, timeout);
    if (result & TCL_READABLE) {
	Tcl_AppendElement(interp, "readable");
    }
    if (result & TCL_WRITABLE) {
	Tcl_AppendElement(interp, "writable");
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestfindexecutableCmd --
 *
 *	This procedure implements the "testfindexecutable" command. It is
 *	used to test Tcl_FindExecutable.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestfindexecutableCmd(clientData, interp, argc, argv)
    ClientData clientData;		/* Not used. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int argc;				/* Number of arguments. */
    char **argv;			/* Argument strings. */
{
    char *oldName;

    if (argc != 2) {
	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
		" argv0\"", (char *) NULL);
	return TCL_ERROR;
    }
    oldName = tclExecutableName;
    tclExecutableName = NULL;
    Tcl_FindExecutable(argv[1]);
    Tcl_SetResult(interp, tclExecutableName, TCL_DYNAMIC);
    ckfree(tclExecutableName);
    tclExecutableName = oldName;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestgetopenfileCmd --
 *
 *	This procedure implements the "testgetopenfile" command. It is
 *	used to get a FILE * value from a registered channel.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestgetopenfileCmd(clientData, interp, argc, argv)
    ClientData clientData;		/* Not used. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int argc;				/* Number of arguments. */
    char **argv;			/* Argument strings. */
{
    ClientData filePtr;

    if (argc != 3) {
        Tcl_AppendResult(interp,
                "wrong # args: should be \"", argv[0],
                " channelName forWriting\"",
                (char *) NULL);
        return TCL_ERROR;
    }
    if (Tcl_GetOpenFile(interp, argv[1], atoi(argv[2]), 1, &filePtr)
            == TCL_ERROR) {
        return TCL_ERROR;
    }
    if (filePtr == (ClientData) NULL) {
        Tcl_AppendResult(interp,
                "Tcl_GetOpenFile succeeded but FILE * NULL!", (char *) NULL);
        return TCL_ERROR;
    }
    return TCL_OK;
}