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
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#include "system.h"

#include <osl/pipe.h>
#include <osl/diagnose.h>
#include <osl/thread.h>
#include <osl/interlck.h>
#include <rtl/string.h>
#include <rtl/ustring.h>
#include <rtl/bootstrap.h>

#include "sockimpl.h"

#define PIPEDEFAULTPATH     "/tmp"
#define PIPEALTERNATEPATH   "/var/tmp"

#define PIPENAMEMASK    "OSL_PIPE_%s"
#define SECPIPENAMEMASK "OSL_PIPE_%s_%s"

sal_Bool SAL_CALL osl_psz_getUserIdent(oslSecurity Security, sal_Char *pszIdent, sal_uInt32 nMax);
oslPipe SAL_CALL osl_psz_createPipe(const sal_Char *pszPipeName, oslPipeOptions Options, oslSecurity Security);


/*****************************************************************************/
/* enum oslPipeError */
/*****************************************************************************/

static struct
{
    int            errcode;
    oslPipeError   error;
} PipeError[]= {
    { 0,               osl_Pipe_E_None              },  /* no error */
    { EPROTOTYPE,      osl_Pipe_E_NoProtocol        },  /* Protocol wrong type for socket */
    { ENOPROTOOPT,     osl_Pipe_E_NoProtocol        },  /* Protocol not available */
    { EPROTONOSUPPORT, osl_Pipe_E_NoProtocol        },  /* Protocol not supported */
    { ESOCKTNOSUPPORT, osl_Pipe_E_NoProtocol        },  /* Socket type not supported */
    { EPFNOSUPPORT,    osl_Pipe_E_NoProtocol        },  /* Protocol family not supported */
    { EAFNOSUPPORT,    osl_Pipe_E_NoProtocol        },  /* Address family not supported by */
                                                        /* protocol family */
    { ENETRESET,       osl_Pipe_E_NetworkReset      },  /* Network dropped connection because */
                                                         /* of reset */
    { ECONNABORTED,    osl_Pipe_E_ConnectionAbort   },  /* Software caused connection abort */
    { ECONNRESET,      osl_Pipe_E_ConnectionReset   },  /* Connection reset by peer */
    { ENOBUFS,         osl_Pipe_E_NoBufferSpace     },  /* No buffer space available */
    { ETIMEDOUT,       osl_Pipe_E_TimedOut          },  /* Connection timed out */
    { ECONNREFUSED,    osl_Pipe_E_ConnectionRefused },  /* Connection refused */
    { -1,              osl_Pipe_E_invalidError      }
};


/* map */
/* mfe: NOT USED
   static int osl_NativeFromPipeError(oslPipeError errorCode)
   {
   int i = 0;

   while ((PipeError[i].error != osl_Pipe_E_invalidError) &&
   (PipeError[i].error != errorCode)) i++;

   return PipeError[i].errcode;

   }
*/

/* reverse map */
static oslPipeError osl_PipeErrorFromNative(int nativeType)
{
    int i = 0;

    while ((PipeError[i].error != osl_Pipe_E_invalidError) &&
           (PipeError[i].errcode != nativeType)) i++;

    return PipeError[i].error;
}


/* macros */
#define ERROR_TO_NATIVE(x)      osl_NativeFromPipeError(x)
#define ERROR_FROM_NATIVE(y)    osl_PipeErrorFromNative(y)


/*****************************************************************************/
/* osl_create/destroy-PipeImpl */
/*****************************************************************************/

oslPipe __osl_createPipeImpl()
{
    oslPipe pPipeImpl;

    pPipeImpl = (oslPipe)calloc(1, sizeof(struct oslPipeImpl));
    pPipeImpl->m_nRefCount =1;
    pPipeImpl->m_bClosed = sal_False;
#if defined(LINUX)
    pPipeImpl->m_bIsInShutdown = sal_False;
    pPipeImpl->m_bIsAccepting = sal_False;
#endif
    return pPipeImpl;
}

void __osl_destroyPipeImpl(oslPipe pImpl)
{
    if (pImpl != NULL)
        free(pImpl);
}


/*****************************************************************************/
/* osl_createPipe  */
/*****************************************************************************/
oslPipe SAL_CALL osl_createPipe(rtl_uString *ustrPipeName, oslPipeOptions Options, oslSecurity Security)
{
    oslPipe pPipe=0;
    rtl_String* strPipeName=0;
    sal_Char* pszPipeName=0;

    if ( ustrPipeName != 0 )
    {
        rtl_uString2String( &strPipeName,
                            rtl_uString_getStr(ustrPipeName),
                            rtl_uString_getLength(ustrPipeName),
                            osl_getThreadTextEncoding(),
                            OUSTRING_TO_OSTRING_CVTFLAGS );
        pszPipeName = rtl_string_getStr(strPipeName);
        pPipe = osl_psz_createPipe(pszPipeName, Options, Security);

        if ( strPipeName != 0 )
        {
            rtl_string_release(strPipeName);
        }
    }

    return pPipe;

}

static sal_Bool
cpyBootstrapSocketPath(sal_Char *name, size_t len)
{
    sal_Bool bRet = sal_False;
    rtl_uString *pName = 0, *pValue = 0;

    rtl_uString_newFromAscii(&pName, "OSL_SOCKET_PATH");

    if (rtl_bootstrap_get(pName, &pValue, NULL))
    {
        rtl_String *pStrValue = 0;
        if (pValue && pValue->length > 0)
        {
            rtl_uString2String(&pStrValue, pValue->buffer,
                               pValue->length, RTL_TEXTENCODING_UTF8,
                               OUSTRING_TO_OSTRING_CVTFLAGS);
            if (pStrValue && pStrValue->length > 0)
            {
                size_t nCopy = SAL_MIN (len-1, (size_t)pStrValue->length);
                strncpy (name, pStrValue->buffer, nCopy);
                name[nCopy] = '\0';
                bRet = (size_t)pStrValue->length < len;
            }
            rtl_string_release(pStrValue);
        }
        rtl_uString_release(pName);
    }
    return bRet;
}

oslPipe SAL_CALL osl_psz_createPipe(const sal_Char *pszPipeName, oslPipeOptions Options,
                                    oslSecurity Security)
{
    int    Flags;
    size_t     len;
    struct sockaddr_un addr;

    sal_Char     name[PATH_MAX + 1];
    size_t nNameLength = 0;
    int bNameTooLong = 0;
    oslPipe  pPipe;

    if (access(PIPEDEFAULTPATH, R_OK|W_OK) == 0)
    {
        strncpy(name, PIPEDEFAULTPATH, sizeof(name));
    }
    else if (access(PIPEALTERNATEPATH, R_OK|W_OK) == 0)
    {
        strncpy(name, PIPEALTERNATEPATH, sizeof(name));
    }
    else if (!cpyBootstrapSocketPath (name, sizeof (name)))
    {
        return NULL;
    }
    name[sizeof(name) - 1] = '\0';  // ensure the string is NULL-terminated
    nNameLength = strlen(name);
    bNameTooLong = nNameLength > sizeof(name) - 2;

    if (!bNameTooLong)
    {
        size_t nRealLength = 0;

        strcat(name, "/");
        ++nNameLength;

        if (Security)
        {
            sal_Char Ident[256];

            Ident[0] = '\0';

            OSL_VERIFY(osl_psz_getUserIdent(Security, Ident, sizeof(Ident)));

            nRealLength = snprintf(&name[nNameLength], sizeof(name) - nNameLength, SECPIPENAMEMASK, Ident, pszPipeName);
        }
        else
        {
            nRealLength = snprintf(&name[nNameLength], sizeof(name) - nNameLength, PIPENAMEMASK, pszPipeName);
        }

        bNameTooLong = nRealLength > sizeof(name) - nNameLength - 1;
    }

    if (bNameTooLong)
    {
        OSL_TRACE("osl_createPipe: pipe name too long");
        return NULL;
    }

    /* alloc memory */
    pPipe= __osl_createPipeImpl();

    /* create socket */
    pPipe->m_Socket = socket(AF_UNIX, SOCK_STREAM, 0);
    if ( pPipe->m_Socket < 0 )
    {
        OSL_TRACE("osl_createPipe socket failed. Errno: %d; %s",errno, strerror(errno));
        __osl_destroyPipeImpl(pPipe);
        return NULL;
    }

/*    OSL_TRACE("osl_createPipe : new Pipe on fd %i\n",pPipe->m_Socket);*/

    /* set close-on-exec flag */
    if ((Flags = fcntl(pPipe->m_Socket, F_GETFD, 0)) != -1)
    {
        Flags |= FD_CLOEXEC;
        if (fcntl(pPipe->m_Socket, F_SETFD, Flags) == -1)
        {
            OSL_TRACE("osl_createPipe failed changing socket flags. Errno: %d; %s",errno,strerror(errno));
        }
    }

    memset(&addr, 0, sizeof(addr));

    OSL_TRACE("osl_createPipe : Pipe Name '%s'",name);

    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, name, sizeof(addr.sun_path));
#if defined(FREEBSD)
    len = SUN_LEN(&addr);
#else
    len = sizeof(addr);
#endif

    if ( Options & osl_Pipe_CREATE )
    {
        struct stat status;

        /* check if there exists an orphan filesystem entry */
        if ( ( stat(name, &status) == 0) &&
             ( S_ISSOCK(status.st_mode) || S_ISFIFO(status.st_mode) ) )
        {
            if ( connect(pPipe->m_Socket,(struct sockaddr *)&addr,len) >= 0 )
            {
                OSL_TRACE("osl_createPipe : Pipe already in use. Errno: %d; %s",errno,strerror(errno));
                close (pPipe->m_Socket);
                __osl_destroyPipeImpl(pPipe);
                return NULL;
            }

            unlink(name);
        }

        /* ok, fs clean */
        if ( bind(pPipe->m_Socket, (struct sockaddr *)&addr, len) < 0 )
        {
            OSL_TRACE("osl_createPipe : failed to bind socket. Errno: %d; %s",errno,strerror(errno));
            close (pPipe->m_Socket);
            __osl_destroyPipeImpl(pPipe);
            return NULL;
        }

        /*  Only give access to all if no security handle was specified, otherwise security
            depends on umask */

        if ( !Security )
            chmod(name,S_IRWXU | S_IRWXG |S_IRWXO);


        strncpy(pPipe->m_Name, name, sizeof(pPipe->m_Name));

        if ( listen(pPipe->m_Socket, 5) < 0 )
        {
            OSL_TRACE("osl_createPipe failed to listen. Errno: %d; %s",errno,strerror(errno));
            unlink(name);   /* remove filesystem entry */
            close (pPipe->m_Socket);
            __osl_destroyPipeImpl(pPipe);
            return NULL;
        }

        return (pPipe);
    }
    else
    {   /* osl_pipe_OPEN */
        if ( access(name, F_OK) != -1 )
        {
            if ( connect( pPipe->m_Socket, (struct sockaddr *)&addr, len) >= 0 )
            {
                return (pPipe);
            }

            OSL_TRACE("osl_createPipe failed to connect. Errno: %d; %s",errno,strerror(errno));
        }

        close (pPipe->m_Socket);
        __osl_destroyPipeImpl(pPipe);
        return NULL;
    }
}

void SAL_CALL osl_acquirePipe( oslPipe pPipe )
{
    osl_incrementInterlockedCount( &(pPipe->m_nRefCount) );
}

void SAL_CALL osl_releasePipe( oslPipe pPipe )
{

    if( 0 == pPipe )
        return;

    if( 0 == osl_decrementInterlockedCount( &(pPipe->m_nRefCount) ) )
    {
        if( ! pPipe->m_bClosed )
            osl_closePipe( pPipe );

        __osl_destroyPipeImpl( pPipe );
    }
}

void SAL_CALL osl_closePipe( oslPipe pPipe )
{
    int nRet;
#if defined(LINUX)
    size_t     len;<--- The scope of the variable 'len' can be reduced
    struct sockaddr_un addr;
    int fd;<--- The scope of the variable 'fd' can be reduced
#endif
    int ConnFD;

    if( ! pPipe )
    {
        return;
    }

    if( pPipe->m_bClosed )
    {
        return;
    }

    ConnFD = pPipe->m_Socket;

    /*
      Thread does not return from accept on linux, so
      connect to the accepting pipe
     */
#if defined(LINUX)
    if ( pPipe->m_bIsAccepting )
    {
        pPipe->m_bIsInShutdown = sal_True;
        pPipe->m_Socket = -1;
        fd = socket(AF_UNIX, SOCK_STREAM, 0);
        memset(&addr, 0, sizeof(addr));

        OSL_TRACE("osl_destroyPipe : Pipe Name '%s'",pPipe->m_Name);

        addr.sun_family = AF_UNIX;
        strncpy(addr.sun_path, pPipe->m_Name, sizeof(addr.sun_path));
        len = sizeof(addr);

        nRet = connect( fd, (struct sockaddr *)&addr, len);
        if ( nRet < 0 )
        {
            OSL_TRACE("connect in osl_destroyPipe failed with error: %s", strerror(errno));
        }
        close(fd);
    }
#endif /* LINUX */


    nRet = shutdown(ConnFD, 2);
    if ( nRet < 0 )
    {
        OSL_TRACE("shutdown in destroyPipe failed : '%s'",strerror(errno));
    }

    nRet = close(ConnFD);
    if ( nRet < 0 )
    {
        OSL_TRACE("close in destroyPipe failed : '%s'",strerror(errno));
    }
    /* remove filesystem entry */
    if ( strlen(pPipe->m_Name) > 0 )
    {
        unlink(pPipe->m_Name);
    }
    pPipe->m_bClosed = sal_True;

/*      OSL_TRACE("Out osl_destroyPipe");     */
}


/*****************************************************************************/
/* osl_acceptPipe  */
/*****************************************************************************/
oslPipe SAL_CALL osl_acceptPipe(oslPipe pPipe)
{
    int     s, flags;<--- The scope of the variable 'flags' can be reduced
    oslPipe pAcceptedPipe;

    OSL_ASSERT(pPipe);
    if ( pPipe == 0 )
    {
        return NULL;
    }

    OSL_ASSERT(strlen(pPipe->m_Name) > 0);

#if defined(LINUX)
    pPipe->m_bIsAccepting = sal_True;
#endif

    s = accept(pPipe->m_Socket, NULL, NULL);

#if defined(LINUX)
    pPipe->m_bIsAccepting = sal_False;
#endif

    if (s < 0)
    {
        OSL_TRACE("osl_acceptPipe : accept error '%s'", strerror(errno));
        return NULL;
    }

#if defined(LINUX)
    if ( pPipe->m_bIsInShutdown  )
    {
        close(s);
        return NULL;
    }
#endif /* LINUX */
    else
    {
        /* alloc memory */
        pAcceptedPipe= __osl_createPipeImpl();

        OSL_ASSERT(pAcceptedPipe);
        if(pAcceptedPipe==NULL)
        {
            close(s);
            return NULL;
        }

        /* set close-on-exec flag */
        if (!((flags = fcntl(s, F_GETFD, 0)) < 0))
        {
            flags |= FD_CLOEXEC;
            if (fcntl(s, F_SETFD, flags) < 0)
            {
                OSL_TRACE("osl_acceptPipe: error changing socket flags. "
                          "Errno: %d; %s",errno,strerror(errno));
            }
        }

        pAcceptedPipe->m_Socket = s;
    }

    return pAcceptedPipe;
}

/*****************************************************************************/
/* osl_receivePipe  */
/*****************************************************************************/
sal_Int32 SAL_CALL osl_receivePipe(oslPipe pPipe,
                        void* pBuffer,
                        sal_Int32 BytesToRead)
{
    int nRet = 0;

    OSL_ASSERT(pPipe);

    if ( pPipe == 0 )
    {
        OSL_TRACE("osl_receivePipe : Invalid socket");
        errno=EINVAL;
        return -1;
    }

    nRet = recv(pPipe->m_Socket,
                  (sal_Char*)pBuffer,
                  BytesToRead, 0);

    if ( nRet < 0 )
    {
        OSL_TRACE("osl_receivePipe failed : %i '%s'",nRet,strerror(errno));
    }

      return nRet;
}


/*****************************************************************************/
/* osl_sendPipe  */
/*****************************************************************************/
sal_Int32 SAL_CALL osl_sendPipe(oslPipe pPipe,
                       const void* pBuffer,
                       sal_Int32 BytesToSend)
{
    int nRet=0;

    OSL_ASSERT(pPipe);

    if ( pPipe == 0 )
    {
        OSL_TRACE("osl_sendPipe : Invalid socket");
        errno=EINVAL;
        return -1;
    }

    nRet = send(pPipe->m_Socket,
                  (sal_Char*)pBuffer,
                  BytesToSend, 0);


    if ( nRet <= 0 )
    {
        OSL_TRACE("osl_sendPipe failed : %i '%s'",nRet,strerror(errno));
    }

     return nRet;
}


/*****************************************************************************/
/* osl_getLastPipeError  */
/*****************************************************************************/
oslPipeError SAL_CALL osl_getLastPipeError(oslPipe pPipe)
{
    (void) pPipe; /* unused */
    return ERROR_FROM_NATIVE(errno);
}


sal_Int32 SAL_CALL osl_writePipe( oslPipe pPipe, const void *pBuffer , sal_Int32 n )
{
    /* loop until all desired bytes were send or an error occurred */
    sal_Int32 BytesSend= 0;
    sal_Int32 BytesToSend= n;

    OSL_ASSERT(pPipe);
    while (BytesToSend > 0)
    {
        sal_Int32 RetVal;

        RetVal= osl_sendPipe(pPipe, pBuffer, BytesToSend);

        /* error occurred? */
        if(RetVal <= 0)
        {
            break;
        }

        BytesToSend -= RetVal;
        BytesSend += RetVal;
        pBuffer= (sal_Char*)pBuffer + RetVal;
    }

    return BytesSend;
}

sal_Int32 SAL_CALL osl_readPipe( oslPipe pPipe, void *pBuffer , sal_Int32 n )
{
    /* loop until all desired bytes were read or an error occurred */
    sal_Int32 BytesRead= 0;
    sal_Int32 BytesToRead= n;

    OSL_ASSERT( pPipe );
    while (BytesToRead > 0)
    {
        sal_Int32 RetVal;
        RetVal= osl_receivePipe(pPipe, pBuffer, BytesToRead);

        /* error occurred? */
        if(RetVal <= 0)
        {
            break;
        }

        BytesToRead -= RetVal;
        BytesRead += RetVal;
        pBuffer= (sal_Char*)pBuffer + RetVal;
    }
    return BytesRead;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */