summaryrefslogtreecommitdiffstats
path: root/mbbsd/record.c
blob: 79dd1801c66532db6084ef1c42bef9025d5df542 (plain) (blame)
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
/* $Id: record.c,v 1.8 2002/07/21 08:18:41 in2 Exp $ */
#include "bbs.h"

#undef  HAVE_MMAP
#define BUFSIZE 512

static void 
PttLock(int fd, int size, int mode)
{
    static struct flock lock_it;
    int             ret;

    lock_it.l_whence = SEEK_CUR;/* from current point */
    lock_it.l_start = 0;    /* -"- */
    lock_it.l_len = size;   /* length of data */
    lock_it.l_type = mode;  /* set exclusive/write lock */
    lock_it.l_pid = 0;      /* pid not actually interesting */
    while ((ret = fcntl(fd, F_SETLKW, &lock_it)) < 0 && errno == EINTR);
}

#define safewrite       write

int 
get_num_records(char *fpath, int size)
{
    struct stat     st;
    if (stat(fpath, &st) == -1)
    return 0;
    return st.st_size / size;
}

int 
get_sum_records(char *fpath, int size)
{
    struct stat     st;
    long            ans = 0;
    FILE           *fp;
    fileheader_t    fhdr;
    char            buf[200], *p;

    if (!(fp = fopen(fpath, "r")))
    return -1;

    strlcpy(buf, fpath, sizeof(buf));
    p = strrchr(buf, '/') + 1;

    while (fread(&fhdr, size, 1, fp) == 1) {
    strcpy(p, fhdr.filename);
    if (stat(buf, &st) == 0 && S_ISREG(st.st_mode) && st.st_nlink == 1)
        ans += st.st_size;
    }
    fclose(fp);
    return ans / 1024;
}

int 
get_record(char *fpath, void *rptr, int size, int id)
{
    int             fd = -1;

    if (id < 1 || (fd = open(fpath, O_RDONLY, 0)) != -1) {
    if (lseek(fd, (off_t) (size * (id - 1)), SEEK_SET) != -1) {
        if (read(fd, rptr, size) == size) {
        close(fd);
        return 0;
        }
    }
    close(fd);
    }
    return -1;
}

int 
get_records(char *fpath, void *rptr, int size, int id, int number)
{
    int             fd;

    if (id < 1 || (fd = open(fpath, O_RDONLY, 0)) == -1)
    return -1;

    if (lseek(fd, (off_t) (size * (id - 1)), SEEK_SET) == -1) {
    close(fd);
    return 0;
    }
    if ((id = read(fd, rptr, size * number)) == -1) {
    close(fd);
    return -1;
    }
    close(fd);
    return id / size;
}

int 
substitute_record(char *fpath, void *rptr, int size, int id)
{
    int             fd;

    if (id < 1 || (fd = open(fpath, O_WRONLY | O_CREAT, 0644)) == -1)
    return -1;

    lseek(fd, (off_t) (size * (id - 1)), SEEK_SET);
    PttLock(fd, size, F_WRLCK);
    safewrite(fd, rptr, size);
    PttLock(fd, size, F_UNLCK);
    close(fd);

    return 0;
}

/* rocker.011022: 避免lock檔開啟時不正常斷線,造成永久lock */
static int
force_open(char *fname)
{
    int             fd;
    time_t          expire;

    expire = now - 3600;    /* lock 存在超過一個小時就是有問題! */

    if (dasht(fname) < expire)
    return -1;
    unlink(fname);
    fd = open(fname, O_WRONLY | O_TRUNC, 0644);

    return fd;
}


#if !defined(_BBS_UTIL_C_)
/* new/old/lock file processing */
typedef struct nol_t {
    char            newfn[256];
    char            oldfn[256];
    char            lockfn[256];
}               nol_t;

static void 
nolfilename(nol_t * n, char *fpath)
{
    sprintf(n->newfn, "%s.new", fpath);
    sprintf(n->oldfn, "%s.old", fpath);
    sprintf(n->lockfn, "%s.lock", fpath);
}

int 
delete_record(char fpath[], int size, int id)
{
    nol_t           my;
    char            abuf[BUFSIZE];
    int             fdr, fdw, fd;
    int             count;

    nolfilename(&my, fpath);
    if ((fd = open(my.lockfn, O_RDWR | O_CREAT | O_APPEND, 0644)) == -1)
    return -1;

    flock(fd, LOCK_EX);

    if ((fdr = open(fpath, O_RDONLY, 0)) == -1) {
    move(10, 10);
    outs("delete_record failed!!! (open)");
    pressanykey();
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
    }
    if (
    ((fdw = open(my.newfn, O_WRONLY | O_CREAT | O_EXCL, 0644)) == -1) &&
    ((fdw = force_open(my.newfn)) == -1)) {
    flock(fd, LOCK_UN);
    close(fd);
    close(fdr);
    return -1;
    }
    count = 1;
    while (read(fdr, abuf, size) == size) {
    if (id != count++ && (safewrite(fdw, abuf, size) == -1)) {
        unlink(my.newfn);
        close(fdr);
        close(fdw);
        flock(fd, LOCK_UN);
        close(fd);
        return -1;
    }
    }
    close(fdr);
    close(fdw);
    if (Rename(fpath, my.oldfn) == -1 || Rename(my.newfn, fpath) == -1) {
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
    }
    flock(fd, LOCK_UN);
    close(fd);
    return 0;
}

#if 0
static char    *
title_body(char *title)
{
    if (!strncasecmp(title, str_reply, 3)) {
    title += 3;
    if (*title == ' ')
        title++;
    }
    return title;
}
#endif

int 
delete_range(char *fpath, int id1, int id2)
{
    fileheader_t    fhdr;
    nol_t           my;
    char            fullpath[STRLEN], *t;
    int             fdr, fdw, fd;
    int             count;

    nolfilename(&my, fpath);

    if ((fd = open(my.lockfn, O_RDWR | O_CREAT | O_APPEND, 0644)) == -1)
    return -1;

    flock(fd, LOCK_EX);

    if ((fdr = open(fpath, O_RDONLY, 0)) == -1) {
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
    }
    if (
    ((fdw = open(my.newfn, O_WRONLY | O_CREAT | O_EXCL, 0644)) == -1) &&
    ((fdw = force_open(my.newfn)) == -1)) {
    close(fdr);
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
    }
    count = 1;
    strlcpy(fullpath, fpath, sizeof(fullpath));
    t = strrchr(fullpath, '/') + 1;

    while (read(fdr, &fhdr, sizeof(fileheader_t)) == sizeof(fileheader_t)) {
    strcpy(t, fhdr.filename);

    /* rocker.011018: add new tag delete */
    if (
        (fhdr.filemode & FILE_MARKED) ||    /* 標記 */
        (fhdr.filemode & FILE_DIGEST) ||    /* 文摘 */
        (id1 && (count < id1 || count > id2)) ||    /* range */
        (!id1 && Tagger(atoi(t + 2), count, TAG_NIN))) {    /* TagList */
        if ((safewrite(fdw, &fhdr, sizeof(fileheader_t)) == -1)) {
        close(fdr);
        close(fdw);
        unlink(my.newfn);
        flock(fd, LOCK_UN);
        close(fd);
        return -1;
        }
    } else {
        //if (dashd(fullpath))
        unlink(fullpath);
    }
    ++count;
    }
    close(fdr);
    close(fdw);
    if (Rename(fpath, my.oldfn) == -1 || Rename(my.newfn, fpath) == -1) {
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
    }
    flock(fd, LOCK_UN);
    close(fd);
    return 0;
}

int 
search_rec(char *dirname, int (*filecheck) ())
{
    fileheader_t    fhdr;
    FILE           *fp;
    int             ans = 0;

    if (!(fp = fopen(dirname, "r")))
    return 0;

    while (fread(&fhdr, sizeof(fhdr), 1, fp)) {
    ans++;
    if ((*filecheck) (&fhdr)) {
        fclose(fp);
        return ans;
    }
    }
    fclose(fp);
    return 0;
}

int             delete_files(char *dirname, int (*filecheck) (), int record){
    fileheader_t    fhdr;
    FILE           *fp, *fptmp;
    int             ans = 0;
    char            tmpfname[128];
    char            genbuf[256];
    char            deleted[256];
    fileheader_t    delfh;
    char            deletedDIR[] = "boards/d/deleted/.DIR";

    strlcpy(deleted, "boards/d/deleted", sizeof(deleted));

    if (!(fp = fopen(dirname, "r")))
    return ans;

    strlcpy(tmpfname, dirname, sizeof(tmpfname));
    strcat(tmpfname, "_tmp");

    if (!(fptmp = fopen(tmpfname, "w"))) {
    fclose(fp);
    return ans;
    }
    while (fread(&fhdr, sizeof(fhdr), 1, fp)) {
    if ((*filecheck) (&fhdr)) {
        ans++;
        setdirpath(genbuf, dirname, fhdr.filename);
        if (record) {
        deleted[14] = '\0';
        stampfile(deleted, &delfh);
        strlcpy(delfh.owner, fhdr.owner, sizeof(delfh.owner));
        strlcpy(delfh.title, fhdr.title, sizeof(delfh.title));
        Link(genbuf, deleted);
        append_record(deletedDIR, &delfh, sizeof(delfh));
        }
        unlink(genbuf);
    } else
        fwrite(&fhdr, sizeof(fhdr), 1, fptmp);
    }

    fclose(fp);
    fclose(fptmp);
    unlink(dirname);
    Rename(tmpfname, dirname);

    return ans;
}

int 
delete_file(char *dirname, int size, int ent, int (*filecheck) ())
{
    char            abuf[BUFSIZE];
    int             fd;
    struct stat     st;
    long            numents;

    if (ent < 1 || (fd = open(dirname, O_RDWR)) == -1)
    return -1;
    flock(fd, LOCK_EX);
    fstat(fd, &st);
    numents = ((long)st.st_size) / size;
    if (((long)st.st_size) % size)
    fprintf(stderr, "align err\n");
    if (lseek(fd, (off_t) size * (ent - 1), SEEK_SET) != -1) {
    if (read(fd, abuf, size) == size) {
        if ((*filecheck) (abuf)) {
        int             i;

        for (i = ent; i < numents; i++) {
            if (lseek(fd, (off_t) ((i) * size), SEEK_SET) == -1 ||
            read(fd, abuf, size) != size ||
            lseek(fd, (off_t) (i - 1) * size, SEEK_SET) == -1)
            break;
            if (safewrite(fd, abuf, size) != size)
            break;
        }
        ftruncate(fd, (off_t) size * (numents - 1));
        flock(fd, LOCK_UN);
        close(fd);
        return 0;
        }
    }
    }
    lseek(fd, 0, SEEK_SET);
    ent = 1;
    while (read(fd, abuf, size) == size) {
    if ((*filecheck) (abuf)) {
        int             i;

        for (i = ent; i < numents; i++) {
        if (lseek(fd, (off_t) (i + 1) * size, SEEK_SET) == -1 ||
            read(fd, abuf, size) != size ||
            lseek(fd, (off_t) (i) * size, SEEK_SET) == -1 ||
            safewrite(fd, abuf, size) != size)
            break;
        }
        ftruncate(fd, (off_t) size * (numents - 1));
        flock(fd, LOCK_UN);
        close(fd);
        return 0;
    }
    ent++;
    }
    flock(fd, LOCK_UN);
    close(fd);
    return -1;
}

#endif              /* !defined(_BBS_UTIL_C_) */

int             apply_record(char *fpath, int (*fptr) (), int size){
    char            abuf[BUFSIZE];
    FILE           *fp;

    if (!(fp = fopen(fpath, "r")))
    return -1;

    while (fread(abuf, 1, size, fp) == size)
    if ((*fptr) (abuf) == QUIT) {
        fclose(fp);
        return QUIT;
    }
    fclose(fp);
    return 0;
}

/* mail / post 時,依據時間建立檔案,加上郵戳 */
int 
stampfile(char *fpath, fileheader_t * fh)
{
    register char  *ip = fpath;
    time_t          dtime = now;
    struct tm      *ptime;
    int             fp = 0;

    if (access(fpath, X_OK | R_OK | W_OK))
    mkdir(fpath, 0755);

    while (*(++ip));
    *ip++ = '/';
    do {
    sprintf(ip, "M.%ld.A.%3.3X", ++dtime, rand() & 0xFFF);
    if (fp == -1 && errno != EEXIST)
        return -1;
    } while ((fp = open(fpath, O_CREAT | O_EXCL | O_WRONLY, 0644)) == -1);
    close(fp);
    memset(fh, 0, sizeof(fileheader_t));
    strlcpy(fh->filename, ip, sizeof(fh->filename));
    ptime = localtime(&dtime);
    sprintf(fh->date, "%2d/%02d", ptime->tm_mon + 1, ptime->tm_mday);
    return 0;
}

void 
stampdir(char *fpath, fileheader_t * fh)
{
    register char  *ip = fpath;
    time_t          dtime = now;
    struct tm      *ptime;

    if (access(fpath, X_OK | R_OK | W_OK))
    mkdir(fpath, 0755);

    while (*(++ip));
    *ip++ = '/';
    do {
    sprintf(ip, "D%lX", ++dtime & 07777);
    } while (mkdir(fpath, 0755) == -1);
    memset(fh, 0, sizeof(fileheader_t));
    strlcpy(fh->filename, ip, sizeof(fh->filename));
    ptime = localtime(&dtime);
    sprintf(fh->date, "%2d/%02d", ptime->tm_mon + 1, ptime->tm_mday);
}

void 
stamplink(char *fpath, fileheader_t * fh)
{
    register char  *ip = fpath;
    time_t          dtime = now;
    struct tm      *ptime;

    if (access(fpath, X_OK | R_OK | W_OK))
    mkdir(fpath, 0755);

    while (*(++ip));
    *ip++ = '/';
    do {
    sprintf(ip, "S%lX", ++dtime);
    } while (symlink("temp", fpath) == -1);
    memset(fh, 0, sizeof(fileheader_t));
    strlcpy(fh->filename, ip, sizeof(fh->filename));
    ptime = localtime(&dtime);
    sprintf(fh->date, "%2d/%02d", ptime->tm_mon + 1, ptime->tm_mday);
}

int 
do_append(char *fpath, fileheader_t * record, int size)
{
    int             fd;

    if ((fd = open(fpath, O_WRONLY | O_CREAT, 0644)) == -1) {
    perror("open");
    return -1;
    }
    flock(fd, LOCK_EX);
    lseek(fd, 0, SEEK_END);

    safewrite(fd, record, size);

    flock(fd, LOCK_UN);
    close(fd);
    return 0;
}

int 
append_record(char *fpath, fileheader_t * record, int size)
{
#if !defined(_BBS_UTIL_C_)
    int             m, n;
    if (get_num_records(fpath, sizeof(fileheader_t)) <= MAX_KEEPMAIL * 2) {
    FILE           *fp;
    char            buf[512], address[200];

    for (n = strlen(fpath) - 1; fpath[n] != '/' && n > 0; n--);
    strncpy(buf, fpath, n + 1);
    buf[n + 1] = 0;
    for (m = strlen(buf) - 2; buf[m] != '/' && m > 0; m--);
    strcat(buf, ".forward");
    if ((fp = fopen(buf, "r"))) {
        fscanf(fp, "%s", address);
        fclose(fp);
        if (buf[0] != 0 && buf[0] != ' ') {
        buf[n + 1] = 0;
        strcat(buf, record->filename);
        do_append(fpath, record, size);
#ifndef  USE_BSMTP
        bbs_sendmail(buf, record->title, address);
#else
        bsmtp(buf, record->title, address, 0);
#endif
        return 0;
        }
    }
    }
#endif

    do_append(fpath, record, size);

    return 0;
}