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
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>

#include <dlfcn.h>
#include <fcntl.h>
#include <pthread.h>
#include <sys/mman.h>
#include <unistd.h>

#include <jni.h>
#include <zlib.h>

#include <android/log.h>

#include "uthash.h"

#include <osl/detail/android-bootstrap.h>

#undef LOGI

#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "lo-bootstrap", __VA_ARGS__))
#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "lo-bootstrap", __VA_ARGS__))

#define MAX(a,b) ((a) > (b) ? (a) : (b))

// TODO: workaround for unified headers migration - only made available when
// __USE_BSD or __BIONIC__ are defined, so just add those here...
#define letoh16(x) (x)
#define letoh32(x) (x)

struct engine {
    int dummy;<--- struct member 'engine::dummy' is never used.
};

/* These are valid / used in all apps. */
const char *data_dir;
const char *cache_dir;
void *apk_file;
int apk_file_size;
JavaVM *the_java_vm;

/* Zip data structures */

/* compression methods */
#define STORE    0

struct local_file_header {
    uint32_t signature;
    uint16_t min_version;
    uint16_t general_flag;
    uint16_t compression;
    uint16_t lastmod_time;
    uint16_t lastmod_date;
    uint32_t crc32;
    uint32_t compressed_size;
    uint32_t uncompressed_size;
    uint16_t filename_size;
    uint16_t extra_field_size;
    char     data[0];
} __attribute__((__packed__));

struct cdir_entry {
    uint32_t signature;
    uint16_t creator_version;
    uint16_t min_version;
    uint16_t general_flag;
    uint16_t compression;
    uint16_t lastmod_time;
    uint16_t lastmod_date;
    uint32_t crc32;
    uint32_t compressed_size;
    uint32_t uncompressed_size;
    uint16_t filename_size;
    uint16_t extra_field_size;
    uint16_t file_comment_size;
    uint16_t disk_num;
    uint16_t internal_attr;
    uint32_t external_attr;
    uint32_t offset;
    char     data[0];
} __attribute__((__packed__));

#define CDIR_END_SIG 0x06054b50

struct cdir_end {
    uint32_t signature;
    uint16_t disk_num;
    uint16_t cdir_disk;
    uint16_t disk_entries;
    uint16_t cdir_entries;
    uint32_t cdir_size;
    uint32_t cdir_offset;
    uint16_t comment_size;
    char     comment[0];
} __attribute__((__packed__));

/* End of Zip data structures */

static struct cdir_entry *cdir_start;
static uint16_t cdir_entries;

/* Data structure to turn Zip's list in arbitrary order of
 * hierarchical pathnames (not necessarily including entries for
 * directories) into an actual hierarchical directory tree, so that we
 * can iterate over directory entries properly in the dirent style
 * functions.
 */

typedef struct direntry *direntry;

struct direntry {
    UT_hash_handle hh;
    enum { REGULAR, DIRECTORY } kind;
    int ino;
    union {
        struct cdir_entry *file;
        direntry subdir;
    };
};

struct lo_apk_dir {
    direntry cur;
};

static direntry assets = NULL;

static uint32_t
cdir_entry_size(struct cdir_entry *entry)
{
    return sizeof(*entry) +
        letoh16(entry->filename_size) +
        letoh16(entry->extra_field_size) +
        letoh16(entry->file_comment_size);
}

int
setup_cdir(void)
{
    struct cdir_end *dirend = (struct cdir_end *)((char *) apk_file + apk_file_size - sizeof(*dirend));
    uint32_t cdir_offset;

    while ((void *)dirend > apk_file &&
           letoh32(dirend->signature) != CDIR_END_SIG)
        dirend = (struct cdir_end *)((char *)dirend - 1);
    if (letoh32(dirend->signature) != CDIR_END_SIG) {
        LOGE("setup_cdir: Could not find end of central directory record");
        return 0;
    }

    cdir_offset = letoh32(dirend->cdir_offset);

    cdir_entries = letoh16(dirend->cdir_entries);
    cdir_start = (struct cdir_entry *)((char *)apk_file + cdir_offset);

    return 1;
}

static struct cdir_entry *
find_cdir_entry(struct cdir_entry *entry, int count, const char *name)
{
    size_t name_size = strlen(name);
    while (count--) {
        if (letoh16(entry->filename_size) == name_size &&
            !memcmp(entry->data, name, name_size))
            return entry;
        entry = (struct cdir_entry *)((char *)entry + cdir_entry_size(entry));
    }
    return NULL;
}

static void
handle_one_asset(struct cdir_entry *entry)
{
    /* In the .apk there are no initial slashes */
    const char *p = entry->data + sizeof("assets/")-1;
    const char *z = entry->data + entry->filename_size;
    direntry *dir = &assets;
    static int ino = 1;

    while (p < z) {
        const char *q = p;
        direntry old, new;

        while (q < z && *q != '/')
            q++;
        HASH_FIND(hh, *dir, p, (unsigned)(q - p), old);<--- Skipping configuration 'HASH_FUNCTION' since the value of 'HASH_FUNCTION' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.
        if (*q == '/') {
            if (old == NULL) {
                new = malloc(sizeof(*new));
                new->ino = ino++;
                new->kind = DIRECTORY;
                new->subdir = NULL;
                HASH_ADD_KEYPTR(hh, *dir, p, (unsigned)(q - p), new);<--- Skipping configuration 'HASH_BLOOM' since the value of 'HASH_BLOOM' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.<--- %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'.<--- Skipping configuration 'HASH_EMIT_KEYS' since the value of 'HASH_EMIT_KEYS' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.<--- Skipping configuration 'HASH_FUNCTION' since the value of 'HASH_FUNCTION' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.
                dir = &new->subdir;
            } else {
                dir = &old->subdir;
            }
            p = q + 1;
        } else {
            if (old == NULL) {
                new = malloc(sizeof(*new));
                new->ino = ino++;
                new->kind = REGULAR;
                new->file = entry;
                HASH_ADD_KEYPTR(hh, *dir, p, (unsigned)(q - p), new);<--- Skipping configuration 'HASH_BLOOM' since the value of 'HASH_BLOOM' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.<--- %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'.<--- Skipping configuration 'HASH_EMIT_KEYS' since the value of 'HASH_EMIT_KEYS' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.<--- Skipping configuration 'HASH_FUNCTION' since the value of 'HASH_FUNCTION' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.
            } else {
                LOGE("duplicate entry in apk: %.*s", entry->filename_size, entry->data);
            }
            p = q;
        }
        (void) dir;
    }
}

int
setup_assets_tree(void)
{
    int count = cdir_entries;
    struct cdir_entry *entry = cdir_start;

    while (count--) {
        if (letoh16(entry->filename_size) >= sizeof("assets/")-1 &&
            memcmp(entry->data, "assets/", sizeof("assets/")-1) == 0)
            handle_one_asset(entry);
        entry = (struct cdir_entry *)((char *)entry + cdir_entry_size(entry));
    }
    return 1;
}

/* The lo-native-code shared library is always loaded from Java, so this is
 * always called by JNI first.
 */
__attribute__ ((visibility("default")))
jint
JNI_OnLoad(JavaVM* vm, void* reserved)<--- The function 'JNI_OnLoad' is never used.
{
    (void) reserved;

    the_java_vm = vm;

    return JNI_VERSION_1_6;
}

// public static native boolean setup(String dataDir,
//                                    String cacheDir,
//                                    String apkFile)

__attribute__ ((visibility("default")))
jboolean
Java_org_libreoffice_android_Bootstrap_setup__Ljava_lang_String_2Ljava_lang_String_2Ljava_lang_String_2<--- The function 'Java_org_libreoffice_android_Bootstrap_setup__Ljava_lang_String_2Ljava_lang_String_2Ljava_lang_String_2' is never used.
    (JNIEnv* env,
     jobject clazz,
     jstring dataDir,
     jstring cacheDir,
     jstring apkFile)
{
    struct stat st;
    int fd;
    const char *dataDirPath;
    const char *cacheDirPath;
    const char *apkFilePath;

    (void) clazz;

    dataDirPath = (*env)->GetStringUTFChars(env, dataDir, NULL);
    data_dir = strdup(dataDirPath);
    (*env)->ReleaseStringUTFChars(env, dataDir, dataDirPath);

    cacheDirPath = (*env)->GetStringUTFChars(env, cacheDir, NULL);
    cache_dir = strdup(cacheDirPath);
    (*env)->ReleaseStringUTFChars(env, cacheDir, cacheDirPath);

    apkFilePath =  (*env)->GetStringUTFChars(env, apkFile, NULL);

    fd = open(apkFilePath, O_RDONLY);
    if (fd == -1) {
        LOGE("Could not open %s", apkFilePath);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    if (fstat(fd, &st) == -1) {
        LOGE("Could not fstat %s", apkFilePath);
        close(fd);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    apk_file = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
    close(fd);

    if (apk_file == MAP_FAILED) {
        LOGE("Could not mmap %s", apkFilePath);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    apk_file_size = st.st_size;

    (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);

    if (!setup_cdir())
        return JNI_FALSE;

    if (!setup_assets_tree())
        return JNI_FALSE;

    return JNI_TRUE;
}

static jboolean
get_jni_string_array(JNIEnv *env,
                     const char *function_and_parameter_name,
                     jobject strv,
                     int *argc,
                     const char ***argv)
{
    jclass StringArray;
    int i;

    StringArray = (*env)->FindClass(env, "[Ljava/lang/String;");
    if (StringArray == NULL) {
        LOGE("Could not find String[] class");
        return JNI_FALSE;
    }

    if (!(*env)->IsInstanceOf(env, strv, StringArray)) {
        LOGE("%s is not a String[]?", function_and_parameter_name);
        return JNI_FALSE;
    }

    *argc = (*env)->GetArrayLength(env, strv);
    *argv = malloc(sizeof(char *) * (*argc+1));

    for (i = 0; i < *argc; i++) {
        const char *s = (*env)->GetStringUTFChars(env, (*env)->GetObjectArrayElement(env, strv, i), NULL);
        (*argv)[i] = strdup(s);
        (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, strv, i), s);
    }
    (*argv)[*argc] = NULL;

    return JNI_TRUE;
}

// public static native int getpid();

__attribute__ ((visibility("default")))
jint
Java_org_libreoffice_android_Bootstrap_getpid(JNIEnv* env,<--- The function 'Java_org_libreoffice_android_Bootstrap_getpid' is never used.
                                              jobject clazz)
{
    (void) env;
    (void) clazz;

    return getpid();
}

// public static native void system(String cmdline);

__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_Bootstrap_system(JNIEnv* env,<--- The function 'Java_org_libreoffice_android_Bootstrap_system' is never used.
                                              jobject clazz,
                                              jstring cmdline)
{
    const char *s;

    (void) clazz;

    s = (*env)->GetStringUTFChars(env, cmdline, NULL);

    LOGI("system(%s)", s);

    system(s);

    (*env)->ReleaseStringUTFChars(env, cmdline, s);
}

// public static native void putenv(String string);

__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_Bootstrap_putenv(JNIEnv* env,
                                              jobject clazz,
                                              jstring string)
{
    const char *s;
    char *s_copy;

    (void) clazz;

    s = (*env)->GetStringUTFChars(env, string, NULL);
    s_copy = strdup(s);

    LOGI("putenv(%s)", s_copy);

    putenv(s_copy);

#if 0
    {
        static int beenhere=0;
        if (!beenhere) {
            LOGI("lo-bootstrap: Sleeping for 20 seconds, start ndk-gdb NOW if that is your intention");
            sleep(20);
            beenhere = 1;
        }
    }
#endif

    (*env)->ReleaseStringUTFChars(env, string, s);
}

__attribute__ ((visibility("default")))
void *
lo_apkentry(const char *filename,
            size_t *size)
{
    struct cdir_entry *entry;
    struct local_file_header *file;
    void *data;

    if (*filename == '/')
        filename++;

    entry = find_cdir_entry(cdir_start, cdir_entries, filename);

    if (entry == NULL) {
        LOGE("lo_apkentry: Could not find %s", filename);
        return NULL;
    }
    file = (struct local_file_header *)((char *)apk_file + letoh32(entry->offset));

    if (letoh16(file->compression) != STORE) {
        LOGE("lo_apkentry: File %s is compressed", filename);
        return NULL;
    }

    data = ((char *)&file->data) + letoh16(file->filename_size) + letoh16(file->extra_field_size);
    *size = file->uncompressed_size;

    /* LOGI("lo_apkentry(%s): %p, %d", filename, data, *size); */

    return data;
}

__attribute__ ((visibility("default")))
lo_apk_dir *
lo_apk_opendir(const char *dirname)
{
    /* In the .apk there are no initial slashes, but the parameter passed to
     * us does have it.
     */
    const char *p = dirname + sizeof("/assets/")-1;
    direntry dir = assets;

    if (!*p) {
        lo_apk_dir *result = malloc(sizeof(*result));
        result->cur = assets;
        return result;
    }

    while (1) {
        const char *q = p;
        direntry entry;

        while (*q && *q != '/')
            q++;

        HASH_FIND(hh, dir, p, (unsigned)(q - p), entry);<--- Skipping configuration 'HASH_FUNCTION' since the value of 'HASH_FUNCTION' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.

        if (entry == NULL && *q == '/') {
            errno = ENOENT;
            return NULL;
        } else if (entry == NULL) {
            /* Empty directories, or directories containing only "hidden"
             * files (like the .gitignore in sc/qa/unit/qpro/indeterminate)
             * are not present in the .apk. So we need to pretend that any
             * directory that doesn't exist as a parent of an entry in the
             * .apk *does* exist but is empty.
             */
            lo_apk_dir *result = malloc(sizeof(*result));
            result->cur = NULL;
            return result;
        }

        if (entry->kind != DIRECTORY) {
            errno = ENOTDIR;
            return NULL;
        }

        if (!q[0] || !q[1]) {
            lo_apk_dir *result = malloc(sizeof(*result));
            result->cur = entry->subdir;
            return result;
        }

        dir = entry->subdir;
        p = q + 1;
    }
}

__attribute__ ((visibility("default")))
struct dirent *
lo_apk_readdir(lo_apk_dir *dirp)
{
    static struct dirent result;

    if (dirp->cur == NULL) {
        /* LOGI("lo_apk_readdir(%p) = NULL", dirp); */
        return NULL;
    }

    result.d_ino = dirp->cur->ino;
    result.d_off = 0;
    result.d_reclen = 0;

    if (dirp->cur->kind == DIRECTORY)
        result.d_type = DT_DIR;
    else
        result.d_type = DT_REG;

    memcpy(result.d_name, dirp->cur->hh.key, dirp->cur->hh.keylen);
    result.d_name[dirp->cur->hh.keylen] = '\0';

    dirp->cur = dirp->cur->hh.next;

    /* LOGI("lo_apk_readdir(%p) = %s:%s", dirp, result.d_type == DT_DIR ? "DIR" : "REG", result.d_name); */

    return &result;
}

__attribute__ ((visibility("default")))
int
lo_apk_closedir(lo_apk_dir *dirp)
{
    free(dirp);

    /* LOGI("lo_apk_closedir(%p)", dirp); */

    return 0;
}

static int
new_stat(const char *path,
         struct stat *statp,
         struct cdir_entry *entry,
         int mode,
         int fake_ino)
{
    struct tm tm;

    memset(statp, 0, sizeof(*statp));
    statp->st_mode = mode | S_IRUSR;
    statp->st_nlink = 1;

    statp->st_uid = getuid();
    statp->st_gid = getgid();

    if (entry != NULL)<--- Assuming that condition 'entry!=NULL' is not redundant<--- Assuming that condition 'entry!=NULL' is not redundant<--- Assuming that condition 'entry!=NULL' is not redundant<--- Assuming that condition 'entry!=NULL' is not redundant
        statp->st_size = entry->uncompressed_size;
    else
        statp->st_size = 0;
    statp->st_blksize = 512;
    if (statp->st_size == 0)
        statp->st_blocks = 0;
    else
        statp->st_blocks = (statp->st_size - 1) / statp->st_blksize + 1;

    statp->st_atime = time(NULL);

    memset(&tm, 0, sizeof(tm));
    tm.tm_sec = (letoh16(entry->lastmod_time) & 0x1F) * 2;
    tm.tm_min = (letoh16(entry->lastmod_time) >> 5) & 0x3F;<--- Null pointer dereference
    tm.tm_hour = (letoh16(entry->lastmod_time) >> 11) & 0x1F;<--- Null pointer dereference
    tm.tm_mday = letoh16(entry->lastmod_date) & 0x1F;
    tm.tm_mon = ((letoh16(entry->lastmod_date) >> 5) & 0x0F) - 1;<--- Null pointer dereference
    tm.tm_year = ((letoh16(entry->lastmod_date) >> 9) & 0x7F) + 80;<--- Null pointer dereference

    statp->st_mtime = mktime(&tm);
    statp->st_ctime = statp->st_mtime;

    statp->st_ino = fake_ino;

    (void) path;
    /* LOGI("lo_apk_lstat(%s) = { mode=%o, size=%lld, ino=%lld mtime=%.24s }",
         path, statp->st_mode, statp->st_size, statp->st_ino,
         ctime((const time_t *) &statp->st_mtime)); */

    return 0;
}

__attribute__ ((visibility("default")))
int
lo_apk_lstat(const char *path,
             struct stat *statp)
{
    const char *pn = path;
    int count = cdir_entries;
    struct cdir_entry *entry = cdir_start;
    size_t name_size;

    if (*pn == '/') {
        pn++;
        if (!pn[0])
            return new_stat(path, statp, NULL, S_IFDIR | S_IXUSR, 1);
    }

    name_size = strlen(pn);
    while (count--)
    {
        if (letoh16(entry->filename_size) >= name_size &&
            !memcmp(entry->data, pn, name_size) &&
            (letoh16(entry->filename_size) == name_size || entry->data[name_size] == '/'))
            break;
        entry = (struct cdir_entry *)((char *)entry + cdir_entry_size(entry));
    }
    if (count >= 0) {
        if (letoh16(entry->filename_size) == name_size)
            return new_stat(path, statp, entry, S_IFREG, cdir_entries - count + 1);
        else
            return new_stat(path, statp, entry, S_IFDIR | S_IXUSR, cdir_entries - count + 1);
    }

    errno = ENOENT;
    return -1;
}

/* Android's JNI works only to libraries loaded through Java's
 * System.loadLibrary(), it seems. But now with just one big app-specific .so
 * on Android, that would not be a problem, but for historical reasons, we
 * have JNI wrappers here, and then call the VCL etc function from them. Oh
 * well, one could say it's clean to have all the Android-specific JNI
 * functions here in this file.
 */

extern void osl_setCommandArgs(int, char **);

__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_Bootstrap_setCommandArgs(JNIEnv* env,
                                                      jobject clazz,
                                                      jobject argv)
{
    char **c_argv;
    int c_argc;
    Dl_info lo_bootstrap_info;

    (void) clazz;

    if (!get_jni_string_array(env, "setCommandArgs :argv", argv, &c_argc, (const char ***) &c_argv))
        return;

    if (dladdr(Java_org_libreoffice_android_Bootstrap_setCommandArgs, &lo_bootstrap_info) != 0) {
        char *new_argv0 = malloc(strlen(lo_bootstrap_info.dli_fname) + strlen(c_argv[0]));
        char *slash;
        strcpy(new_argv0, lo_bootstrap_info.dli_fname);
        slash = strrchr(new_argv0, '/');
        if (slash != NULL)
            *slash = '\0';
        slash = strrchr(new_argv0, '/');
        if (slash != NULL)
            strcpy(slash+1, c_argv[0]);
        else
            strcpy(new_argv0, c_argv[0]);
        free(c_argv[0]);
        c_argv[0] = new_argv0;
    }

    osl_setCommandArgs(c_argc, c_argv);
}

/* Code for reading lines from the pipe based on the (Apache-licensed) Android
 * logwrapper.c
 */

static int
read_from(int fd, const char *tag, char *buffer, int *sz, int *a, int *b, size_t sizeof_buffer)
{
    int nread;

    nread = read(fd, buffer+*b, sizeof_buffer - 1 - *b);
    *sz = nread;

    if (nread == -1) {
        LOGE("redirect_thread: Reading from %d failed: %s", fd, strerror(errno));
        close(fd);
        return -1;
    }

    if (nread == 0) {
        LOGI("redirect_thread: EOF from fd %d", fd);
        close(fd);
        return 0;
    }

    *sz += *b;

    for (*b = 0; *b < *sz; (*b)++) {
        if (buffer[*b] == '\n') {
            buffer[*b] = '\0';
            __android_log_print(ANDROID_LOG_INFO, tag, "%s", &buffer[*a]);
            *a = *b + 1;
        }
    }

    if (*a == 0 && *b == (int) sizeof_buffer - 1) {
        // buffer is full, flush
        buffer[*b] = '\0';
        __android_log_print(ANDROID_LOG_INFO, tag, "%s", &buffer[*a]);
        *b = 0;
    } else if (*a != *b) {
        // Keep left-overs
        *b -= *a;
        memmove(buffer, &buffer[*a], *b);
        *a = 0;
    } else {
        *a = 0;
        *b = 0;
    }

    return nread;
}

static int stdout_pipe[2], stderr_pipe[2];

static void *
redirect_thread(void *arg)
{
    char buffer[2][4096];
    int a[2] = { 0, 0 };
    int b[2] = { 0, 0 };
    int sz[2];

    (void) arg;

    while (1) {
        fd_set readfds;
        int nfds = 0;

        FD_ZERO(&readfds);
        if (stdout_pipe[0] != -1) {
            FD_SET(stdout_pipe[0], &readfds);
            nfds = MAX(nfds, stdout_pipe[0] + 1);
        }
        if (stderr_pipe[0] != -1) {
            FD_SET(stderr_pipe[0], &readfds);
            nfds = MAX(nfds, stderr_pipe[0] + 1);
        }
        if (nfds == 0) {
            LOGI("redirect_thread: Nothing to read any more, thread exiting");
            return NULL;
        }

        if (select(nfds, &readfds, NULL, NULL, NULL) == -1) {
            LOGE("redirect_thread: select failed: %s, thread exiting", strerror(errno));
            close(stdout_pipe[0]);
            stdout_pipe[0] = -1;
            close(stderr_pipe[0]);
            stderr_pipe[0] = -1;
            return NULL;
        }

        if (stdout_pipe[0] != -1 &&
            FD_ISSET(stdout_pipe[0], &readfds)) {
            if (read_from(stdout_pipe[0], "stdout", buffer[0], &sz[0], &a[0], &b[0], sizeof(buffer[0])) <= 0) {
                stdout_pipe[0] = -1;
            }
        }

        if (stderr_pipe[0] != -1 &&
            FD_ISSET(stderr_pipe[0], &readfds)) {
            if (read_from(stderr_pipe[0], "stderr", buffer[1], &sz[1], &a[1], &b[1], sizeof(buffer[1])) <= 0) {
                stderr_pipe[0] = -1;
            }
        }
    }
}

static int
redirect_to_null(void)
{
    int null = open("/dev/null", O_WRONLY);
    if (null == -1) {
        LOGE("redirect_stdio: Could not open /dev/null: %s", strerror(errno));
        /* If we can't redirect stdout or stderr to /dev/null, just close them
         * then instead. Huh?
         */
        close(1);
        close(2);
        return 0;
    }
    if (dup2(null, 1) == -1) {
        LOGE("redirect_stdio: Could not dup2 %d to 1: %s", null, strerror(errno));
        close(null);
        close(1);
        close(2);
        return 0;
    }
    if (dup2(null, 2) == -1) {
        LOGE("redirect_stdio: Could not dup2 %d to 2: %s", null, strerror(errno));
        close(null);
        close(1);
        close(2);
        return 0;
    }
    close(null);
    return 1;
}

__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_Bootstrap_redirect_1stdio(JNIEnv* env,
                                                       jobject clazz,
                                                       jboolean state)
{
    static jboolean current = JNI_FALSE;
    pthread_t thread;
    pthread_attr_t attr;

    (void) env;
    (void) clazz;

    if (state == current)
        return;

    if (state == JNI_FALSE) {
        if (!redirect_to_null())
            return;
    } else {
        if (pipe(stdout_pipe) == -1) {
            LOGE("redirect_stdio: Could not create pipes: %s", strerror(errno));
            return;
        }
        if (pipe(stderr_pipe) == -1) {
            LOGE("redirect_stdio: Could not create pipes: %s", strerror(errno));
            close(stdout_pipe[0]);
            close(stdout_pipe[1]);
            return;
        }
        LOGI("redirect_stdio: stdout pipe: [%d,%d], stderr pipe: [%d,%d]",
             stdout_pipe[0], stdout_pipe[1], stderr_pipe[0], stderr_pipe[1]);

        if (dup2(stdout_pipe[1], 1) == -1) {
            LOGE("redirect_stdio: Could not dup2 %d to 1: %s", stdout_pipe[1], strerror(errno));
            close(stdout_pipe[0]);
            close(stdout_pipe[1]);
            close(stderr_pipe[0]);
            close(stderr_pipe[1]);
            return;
        }

        if (dup2(stderr_pipe[1], 2) == -1) {
            LOGE("redirect_stdio: Could not dup2 %d to 2: %s", stdout_pipe[1], strerror(errno));
            /* stdout has already been redirected to its pipe, so redirect
             * it back to /dev/null
             */
            redirect_to_null();
            close(stdout_pipe[0]);
            close(stdout_pipe[1]);
            close(stderr_pipe[0]);
            close(stderr_pipe[1]);
            return;
        }
        close(stdout_pipe[1]);
        close(stderr_pipe[1]);

        if (pthread_attr_init(&attr) != 0 ||
            pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0 ||
            pthread_create(&thread, &attr, redirect_thread, NULL) != 0) {
            LOGE("redirect_stdio: Could not create thread: %s", strerror(errno));
            redirect_to_null();
            close(stdout_pipe[0]);
            close(stderr_pipe[0]);
            return;
        }
    }
    current = state;
    return;
}

__attribute__ ((visibility("default")))
jlong
Java_org_libreoffice_android_Bootstrap_address_1of_1direct_1byte_1buffer(JNIEnv *env,<--- The function 'Java_org_libreoffice_android_Bootstrap_address_1of_1direct_1byte_1buffer' is never used.
                                                                         jobject bbuffer)
{
    return (jlong) (intptr_t) (*env)->GetDirectBufferAddress(env, bbuffer);
}

__attribute__ ((visibility("default")))
void
libreofficekit_set_javavm(JavaVM *vm)<--- The function 'libreofficekit_set_javavm' is never used.
{
    the_java_vm = vm;
}

__attribute__ ((visibility("default")))
JavaVM *
lo_get_javavm(void)
{
    return the_java_vm;
}

__attribute__ ((visibility("default")))
const char *
lo_get_app_data_dir(void)
{
    return data_dir;
}

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