Line data Source code
1 : #include "../../burp.h"
2 : #include "../../alloc.h"
3 : #include "../../asfd.h"
4 : #include "../../async.h"
5 : #include "../../attribs.h"
6 : #include "../../cmd.h"
7 : #include "../../cntr.h"
8 : #include "../../conf.h"
9 : #include "../../conffile.h"
10 : #include "../../fsops.h"
11 : #include "../../handy.h"
12 : #include "../../iobuf.h"
13 : #include "../../log.h"
14 : #include "../../sbuf.h"
15 : #include "../child.h"
16 : #include "../compress.h"
17 : #include "../resume.h"
18 : #include "blocklen.h"
19 : #include "dpth.h"
20 : #include "backup_phase2.h"
21 :
22 : static size_t treepathlen=0;
23 :
24 0 : static int path_length_warn(struct iobuf *path, struct conf **cconfs)
25 : {
26 0 : if(get_int(cconfs[OPT_PATH_LENGTH_WARN]))
27 0 : logw(NULL, get_cntr(cconfs), "Path too long for tree - will save in data structure instead: %s\n", path->buf);
28 0 : return 1;
29 : }
30 :
31 4 : static int path_too_long(struct iobuf *path, struct conf **cconfs)
32 : {
33 : static const char *cp;
34 4 : if(treepathlen+path->len+1>fs_full_path_max)
35 : {
36 : // FIX THIS:
37 : // Cannot warn down the asfd to the client, because it can
38 : // arrive after the client has disconnected, which causes
39 : // an error on the server side.
40 : // Would need to change the way that "backupphase2end" works
41 : // to be able to fix it.
42 0 : return path_length_warn(path, cconfs);
43 : }
44 4 : if((cp=strrchr(path->buf, '/'))) cp++;
45 0 : else cp=path->buf;
46 4 : if(strlen(cp)>fs_name_max) return path_length_warn(path, cconfs);
47 : return 0;
48 : }
49 :
50 4 : static int treedata(struct sbuf *sb, struct conf **cconfs)
51 : {
52 : // Windows is sending directory data as if it is file data - this
53 : // cannot be saved in a tree structure.
54 4 : if(S_ISDIR(sb->statp.st_mode)) return 0;
55 :
56 8 : if(sb->path.cmd!=CMD_FILE
57 4 : && sb->path.cmd!=CMD_ENC_FILE
58 0 : && sb->path.cmd!=CMD_EFS_FILE)
59 : return 0;
60 :
61 4 : return !path_too_long(&sb->path, cconfs);
62 : }
63 :
64 4 : static char *set_new_datapth(struct asfd *asfd,
65 : struct sdirs *sdirs, struct conf **cconfs,
66 : struct sbuf *sb, struct dpth *dpth, int *istreedata)
67 : {
68 4 : char *tmp=NULL;
69 4 : char *rpath=NULL;
70 4 : if(get_int(cconfs[OPT_DIRECTORY_TREE]))
71 4 : *istreedata=treedata(sb, cconfs);
72 :
73 4 : if(*istreedata)
74 : {
75 : // We want to place this file in a directory structure like
76 : // the directory structure on the original client.
77 4 : if(!(tmp=prepend_s(TREE_DIR, sb->path.buf)))
78 : {
79 0 : log_and_send_oom(asfd);
80 : return NULL;
81 : }
82 : }
83 : else
84 : {
85 0 : if(!(tmp=strdup_w(dpth_protocol1_mk(dpth, sb->compression,
86 : sb->path.cmd), __func__))) return NULL;
87 : }
88 4 : iobuf_from_str(&sb->protocol1->datapth, CMD_DATAPTH, tmp);
89 4 : if(build_path(sdirs->datadirtmp,
90 4 : sb->protocol1->datapth.buf, &rpath, sdirs->datadirtmp))
91 : {
92 0 : log_and_send(asfd, "build path failed");
93 : return NULL;
94 : }
95 4 : return rpath;
96 : }
97 :
98 4 : static int start_to_receive_new_file(struct asfd *asfd,
99 : struct sdirs *sdirs, struct conf **cconfs,
100 : struct sbuf *sb, struct dpth *dpth)
101 : {
102 4 : int ret=-1;
103 4 : char *rpath=NULL;
104 4 : int istreedata=0;
105 :
106 : //logp("start to receive: %s\n", sb->path.buf);
107 :
108 4 : if(!(rpath=set_new_datapth(asfd,
109 : sdirs, cconfs, sb, dpth, &istreedata)))
110 : goto end;
111 :
112 4 : if(!(sb->protocol1->fzp=fzp_open(rpath, "wb")))
113 : {
114 0 : log_and_send(asfd, "make file failed");
115 0 : goto end;
116 : }
117 4 : if(!istreedata) dpth_incr(dpth);
118 : ret=0;
119 : end:
120 4 : free_w(&rpath);
121 4 : return ret;
122 : }
123 :
124 : #include <librsync.h>
125 :
126 2 : static int process_changed_file(struct asfd *asfd, struct conf **cconfs,
127 : struct sbuf *cb, struct sbuf *p1b,
128 : const char *adir)
129 : {
130 2 : int ret=-1;
131 2 : size_t blocklen=0;
132 2 : char *curpath=NULL;
133 : //logp("need to process changed file: %s (%s)\n",
134 : // cb->path, cb->datapth);
135 :
136 : // Move datapth onto p1b.
137 2 : iobuf_move(&p1b->protocol1->datapth, &cb->protocol1->datapth);
138 :
139 2 : if(!(curpath=prepend_s(adir, p1b->protocol1->datapth.buf)))
140 : {
141 0 : log_out_of_memory(__func__);
142 : goto end;
143 : }
144 2 : if(dpth_protocol1_is_compressed(cb->compression, curpath))
145 0 : p1b->protocol1->sigfzp=fzp_gzopen(curpath, "rb");
146 : else
147 2 : p1b->protocol1->sigfzp=fzp_open(curpath, "rb");
148 2 : if(!p1b->protocol1->sigfzp)
149 : {
150 0 : logp("could not open %s: %s\n", curpath, strerror(errno));
151 : goto end;
152 : }
153 :
154 2 : blocklen=get_librsync_block_len(cb->endfile.buf);
155 4 : if(!(p1b->protocol1->sigjob=
156 : #ifdef RS_DEFAULT_STRONG_LEN
157 2 : rs_sig_begin(blocklen, RS_DEFAULT_STRONG_LEN)
158 : #else
159 : // This is for librsync-1.0.0. RS_DEFAULT_STRONG_LEN was 8 in
160 : // librsync-0.9.7.
161 : rs_sig_begin(blocklen, 8,
162 : rshash_to_magic_number(get_e_rshash(cconfs[OPT_RSHASH])))
163 : #endif
164 : ))
165 : {
166 0 : logp("could not start signature job.\n");
167 : goto end;
168 : }
169 : //logp("sig begin: %s\n", p1b->protocol1->datapth.buf);
170 2 : if(!(p1b->protocol1->infb=rs_filebuf_new(NULL,
171 2 : p1b->protocol1->sigfzp,
172 : NULL, blocklen, -1)))
173 : {
174 0 : logp("could not rs_filebuf_new for infb.\n");
175 : goto end;
176 : }
177 2 : if(!(p1b->protocol1->outfb=rs_filebuf_new(NULL, NULL,
178 : asfd, ASYNC_BUF_LEN, -1)))
179 : {
180 0 : logp("could not rs_filebuf_new for in_outfb.\n");
181 : goto end;
182 : }
183 :
184 : // Flag the things that need to be sent (to the client)
185 2 : p1b->flags |= SBUF_SEND_DATAPTH;
186 2 : p1b->flags |= SBUF_SEND_STAT;
187 2 : p1b->flags |= SBUF_SEND_PATH;
188 :
189 : //logp("sending sig for %s\n", p1b->path);
190 : //logp("(%s)\n", p1b->datapth);
191 :
192 2 : ret=0;
193 : end:
194 2 : free_w(&curpath);
195 2 : return ret;
196 : }
197 :
198 68 : static int new_non_file(struct sbuf *p1b,
199 : struct manio *ucmanio, struct conf **cconfs)
200 : {
201 : // Is something that does not need more data backed up.
202 : // Like a directory or a link or something like that.
203 : // Goes into the unchanged file, so that it does not end up out of
204 : // order with normal files, which has to wait around for their data
205 : // to turn up.
206 68 : if(manio_write_sbuf(ucmanio, p1b))
207 : return -1;
208 68 : cntr_add(get_cntr(cconfs), p1b->path.cmd, 0);
209 68 : sbuf_free_content(p1b);
210 68 : return 0;
211 : }
212 :
213 0 : static int changed_non_file(struct sbuf *p1b,
214 : struct manio *ucmanio, enum cmd cmd, struct conf **cconfs)
215 : {
216 : // As new_non_file.
217 0 : if(manio_write_sbuf(ucmanio, p1b))
218 : return -1;
219 0 : cntr_add_changed(get_cntr(cconfs), cmd);
220 0 : sbuf_free_content(p1b);
221 0 : return 0;
222 : }
223 :
224 127 : static int process_new(struct conf **cconfs,
225 : struct sbuf *p1b, struct manio *ucmanio)
226 : {
227 127 : if(!p1b->path.buf) return 0;
228 122 : if(sbuf_is_filedata(p1b)
229 68 : || sbuf_is_vssdata(p1b))
230 : {
231 : //logp("need to process new file: %s\n", p1b->path);
232 : // Flag the things that need to be sent (to the client)
233 54 : p1b->flags |= SBUF_SEND_STAT;
234 54 : p1b->flags |= SBUF_SEND_PATH;
235 54 : return 0;
236 : }
237 68 : return new_non_file(p1b, ucmanio, cconfs);
238 : }
239 :
240 6 : static int process_unchanged_file(struct sbuf *p1b, struct sbuf *cb,
241 : struct manio *ucmanio, struct conf **cconfs)
242 : {
243 : // Need to re-encode the p1b attribs to include compression and
244 : // other bits and pieces that are recorded on cb.
245 6 : iobuf_move(&p1b->protocol1->datapth, &cb->protocol1->datapth);
246 6 : iobuf_move(&p1b->endfile, &cb->endfile);
247 6 : p1b->compression=cb->compression;
248 6 : p1b->winattr=cb->winattr;
249 6 : if(attribs_encode(p1b))
250 : return -1;
251 6 : if(manio_write_sbuf(ucmanio, p1b))
252 : return -1;
253 6 : cntr_add_same(get_cntr(cconfs), p1b->path.cmd);
254 6 : if(p1b->endfile.buf) cntr_add_bytes(get_cntr(cconfs),
255 0 : strtoull(p1b->endfile.buf, NULL, 10));
256 6 : sbuf_free_content(cb);
257 6 : return 1;
258 : }
259 :
260 : static int process_new_file(struct conf **cconfs,
261 : struct sbuf *cb, struct sbuf *p1b, struct manio *ucmanio)
262 : {
263 2 : if(process_new(cconfs, p1b, ucmanio))
264 : return -1;
265 2 : sbuf_free_content(cb);
266 : return 1;
267 : }
268 :
269 10 : static int maybe_do_delta_stuff(struct asfd *asfd,
270 : struct sdirs *sdirs, struct sbuf *cb, struct sbuf *p1b,
271 : struct manio *ucmanio, struct conf **cconfs)
272 : {
273 10 : int oldcompressed=0;
274 10 : int compression=p1b->compression;
275 :
276 : // If the file type changed, I think it is time to back it up again
277 : // (for example, EFS changing to normal file, or back again).
278 10 : if(cb->path.cmd!=p1b->path.cmd)
279 : return process_new_file(cconfs, cb, p1b, ucmanio);
280 :
281 : // mtime is the actual file data.
282 : // ctime is the attributes or meta data.
283 10 : if(cb->statp.st_mtime==p1b->statp.st_mtime
284 6 : && cb->statp.st_ctime==p1b->statp.st_ctime)
285 : {
286 : // got an unchanged file
287 : //logp("got unchanged file: %s %c %c\n",
288 : // cb->path.buf, cb->path.cmd, p1b->path.cmd);
289 6 : return process_unchanged_file(p1b, cb, ucmanio, cconfs);
290 : }
291 :
292 4 : if(cb->statp.st_mtime==p1b->statp.st_mtime
293 0 : && cb->statp.st_ctime!=p1b->statp.st_ctime)
294 : {
295 : // File data stayed the same, but attributes or meta data
296 : // changed. We already have the attributes, but may need to get
297 : // extra meta data.
298 : // FIX THIS horrible mess.
299 0 : if(cb->path.cmd==CMD_ENC_METADATA
300 0 : || p1b->path.cmd==CMD_ENC_METADATA
301 0 : || cb->path.cmd==CMD_EFS_FILE
302 0 : || p1b->path.cmd==CMD_EFS_FILE
303 : // FIX THIS: make unencrypted metadata use the librsync
304 0 : || cb->path.cmd==CMD_METADATA
305 0 : || p1b->path.cmd==CMD_METADATA
306 0 : || sbuf_is_vssdata(cb)
307 0 : || sbuf_is_vssdata(p1b))
308 : return process_new_file(cconfs, cb, p1b, ucmanio);
309 : // On Windows, we have to back up the whole file if ctime
310 : // changed, otherwise things like permission changes do not get
311 : // noticed. So, in that case, fall through to the changed stuff
312 : // below.
313 : // Non-Windows clients finish here.
314 0 : else if(!get_int(cconfs[OPT_CLIENT_IS_WINDOWS]))
315 0 : return process_unchanged_file(p1b,
316 : cb, ucmanio, cconfs);
317 : }
318 :
319 : // Got a changed file.
320 : //logp("got changed file: %s\n", p1b->path.buf);
321 :
322 : // If either old or new is encrypted, or librsync is off, we need to
323 : // get a new file.
324 : // FIX THIS horrible mess.
325 4 : if(!get_int(cconfs[OPT_LIBRSYNC])
326 : // FIX THIS: make unencrypted metadata use the librsync
327 4 : || cb->path.cmd==CMD_METADATA
328 4 : || p1b->path.cmd==CMD_METADATA
329 4 : || sbuf_is_encrypted(cb)
330 2 : || sbuf_is_encrypted(p1b)
331 2 : || sbuf_is_vssdata(cb)
332 2 : || sbuf_is_vssdata(p1b))
333 : return process_new_file(cconfs, cb, p1b, ucmanio);
334 :
335 : // Get new files if they have switched between compression on or off.
336 2 : if(cb->protocol1->datapth.buf
337 2 : && dpth_protocol1_is_compressed(cb->compression,
338 : cb->protocol1->datapth.buf))
339 0 : oldcompressed=1;
340 2 : if( ( oldcompressed && !compression)
341 2 : || (!oldcompressed && compression))
342 : return process_new_file(cconfs, cb, p1b, ucmanio);
343 :
344 : // Otherwise, do the delta stuff (if possible).
345 2 : if(sbuf_is_filedata(p1b)
346 0 : || sbuf_is_vssdata(p1b))
347 : {
348 2 : if(process_changed_file(asfd, cconfs, cb, p1b,
349 2 : sdirs->currentdata)) return -1;
350 : }
351 : else
352 : {
353 0 : if(changed_non_file(p1b, ucmanio, p1b->path.cmd, cconfs))
354 : return -1;
355 : }
356 2 : sbuf_free_content(cb);
357 : return 1;
358 : }
359 :
360 : // return 1 to say that a file was processed
361 10 : static int maybe_process_file(struct asfd *asfd,
362 : struct sdirs *sdirs, struct sbuf *cb, struct sbuf *p1b,
363 : struct manio *ucmanio, struct conf **cconfs)
364 : {
365 : int pcmp;
366 10 : if(!(pcmp=sbuf_pathcmp(cb, p1b)))
367 10 : return maybe_do_delta_stuff(asfd, sdirs, cb, p1b,
368 : ucmanio, cconfs);
369 0 : else if(pcmp>0)
370 : {
371 : //logp("ahead: %s\n", p1b->path);
372 : // ahead - need to get the whole file
373 0 : if(process_new(cconfs, p1b, ucmanio))
374 : return -1;
375 : // Do not free.
376 0 : return 1;
377 : }
378 : //logp("behind: %s\n", p1b->path);
379 : // Behind - need to read more from the old manifest.
380 : // Count a deleted file - it was in the old manifest
381 : // but not the new.
382 0 : cntr_add_deleted(get_cntr(cconfs), cb->path.cmd);
383 0 : return 0;
384 : }
385 :
386 : // Return 1 if there is still stuff needing to be sent.
387 : // FIX THIS: lots of repeated code.
388 916 : static int do_stuff_to_send(struct asfd *asfd,
389 : struct sbuf *p1b, char **last_requested)
390 : {
391 : static struct iobuf wbuf;
392 916 : if(p1b->flags & SBUF_SEND_DATAPTH)
393 : {
394 2 : iobuf_copy(&wbuf, &p1b->protocol1->datapth);
395 2 : switch(asfd->append_all_to_write_buffer(asfd, &wbuf))
396 : {
397 : case APPEND_OK: break;
398 : case APPEND_BLOCKED: return 1;
399 0 : default: return -1;
400 : }
401 2 : p1b->flags &= ~SBUF_SEND_DATAPTH;
402 : }
403 916 : if(p1b->flags & SBUF_SEND_STAT)
404 : {
405 56 : iobuf_copy(&wbuf, &p1b->attr);
406 56 : switch(asfd->append_all_to_write_buffer(asfd, &wbuf))
407 : {
408 : case APPEND_OK: break;
409 : case APPEND_BLOCKED: return 1;
410 0 : default: return -1;
411 : }
412 56 : p1b->flags &= ~SBUF_SEND_STAT;
413 : }
414 916 : if(p1b->flags & SBUF_SEND_PATH)
415 : {
416 56 : iobuf_copy(&wbuf, &p1b->path);
417 56 : switch(asfd->append_all_to_write_buffer(asfd, &wbuf))
418 : {
419 : case APPEND_OK: break;
420 : case APPEND_BLOCKED: return 1;
421 0 : default: return -1;
422 : }
423 56 : p1b->flags &= ~SBUF_SEND_PATH;
424 56 : free_w(last_requested);
425 56 : if(!(*last_requested=strdup_w(p1b->path.buf, __func__)))
426 : return -1;
427 : }
428 916 : if(p1b->protocol1->sigjob && !(p1b->flags & SBUF_SEND_ENDOFSIG))
429 : {
430 : rs_result sigresult;
431 :
432 4 : switch((sigresult=rs_async(p1b->protocol1->sigjob,
433 : &(p1b->protocol1->rsbuf),
434 : p1b->protocol1->infb, p1b->protocol1->outfb)))
435 : {
436 : case RS_DONE:
437 2 : p1b->flags |= SBUF_SEND_ENDOFSIG;
438 2 : break;
439 : case RS_BLOCKED:
440 : case RS_RUNNING:
441 : // keep going round the loop.
442 : return 1;
443 : default:
444 0 : logp("error in rs_async: %d\n", sigresult);
445 0 : return -1;
446 : }
447 : }
448 914 : if(p1b->flags & SBUF_SEND_ENDOFSIG)
449 : {
450 2 : iobuf_from_str(&wbuf, CMD_END_FILE, (char *)"endfile");
451 2 : switch(asfd->append_all_to_write_buffer(asfd, &wbuf))
452 : {
453 : case APPEND_OK: break;
454 : case APPEND_BLOCKED: return 1;
455 0 : default: return -1;
456 : }
457 2 : p1b->flags &= ~SBUF_SEND_ENDOFSIG;
458 : }
459 : return 0;
460 : }
461 :
462 4 : static int start_to_receive_delta(struct sdirs *sdirs, struct sbuf *rb)
463 : {
464 4 : if(rb->compression)
465 : {
466 0 : if(!(rb->protocol1->fzp=fzp_gzopen(sdirs->deltmppath,
467 0 : comp_level(rb->compression))))
468 : return -1;
469 : }
470 : else
471 : {
472 4 : if(!(rb->protocol1->fzp=fzp_open(sdirs->deltmppath, "wb")))
473 : return -1;
474 : }
475 4 : rb->flags |= SBUF_RECV_DELTA;
476 :
477 : return 0;
478 : }
479 :
480 4 : static int finish_delta(struct sdirs *sdirs, struct sbuf *rb)
481 : {
482 4 : int ret=0;
483 4 : char *deltmp=NULL;
484 4 : char *delpath=NULL;
485 4 : if(!(deltmp=prepend_s("deltas.forward", rb->protocol1->datapth.buf))
486 4 : || !(delpath=prepend_s(sdirs->working, deltmp))
487 4 : || mkpath(&delpath, sdirs->working)
488 : // Rename race condition is of no consequence here, as delpath will
489 : // just get recreated.
490 4 : || do_rename(sdirs->deltmppath, delpath))
491 : ret=-1;
492 4 : free_w(&delpath);
493 4 : free_w(&deltmp);
494 4 : return ret;
495 : }
496 :
497 8 : static int deal_with_receive_end_file(struct asfd *asfd, struct sdirs *sdirs,
498 4 : struct sbuf *rb, struct manio *chmanio, struct conf **cconfs,
499 : char **last_requested)
500 : {
501 8 : int ret=-1;
502 : static char *cp=NULL;
503 : static struct iobuf *rbuf;
504 8 : struct cntr *cntr=get_cntr(cconfs);
505 8 : rbuf=asfd->rbuf;
506 : // Finished the file.
507 : // Write it to the phase2 file, and free the buffers.
508 :
509 8 : if(fzp_close(&(rb->protocol1->fzp)))
510 : {
511 0 : logp("error closing delta for %s in receive\n", rb->path.buf);
512 : goto end;
513 : }
514 8 : iobuf_move(&rb->endfile, rbuf);
515 12 : if(rb->flags & SBUF_RECV_DELTA && finish_delta(sdirs, rb))
516 : goto end;
517 :
518 8 : if(manio_write_sbuf(chmanio, rb))
519 : goto end;
520 :
521 8 : if(rb->flags & SBUF_RECV_DELTA)
522 4 : cntr_add_changed(cntr, rb->path.cmd);
523 : else
524 4 : cntr_add(cntr, rb->path.cmd, 0);
525 :
526 8 : if(*last_requested && !strcmp(rb->path.buf, *last_requested))
527 2 : free_w(last_requested);
528 :
529 8 : cp=strchr(rb->endfile.buf, ':');
530 8 : if(rb->endfile.buf)
531 8 : cntr_add_bytes(cntr, strtoull(rb->endfile.buf, NULL, 10));
532 : if(cp)
533 : {
534 : // checksum stuff goes here
535 : }
536 :
537 : ret=0;
538 : end:
539 8 : sbuf_free_content(rb);
540 8 : return ret;
541 : }
542 :
543 8 : static int deal_with_receive_append(struct asfd *asfd, struct sbuf *rb)
544 : {
545 8 : int app=0;
546 : static struct iobuf *rbuf;
547 8 : rbuf=asfd->rbuf;
548 : //logp("rbuf->len: %d\n", rbuf->len);
549 :
550 8 : if(rb->protocol1->fzp)
551 8 : app=fzp_write(rb->protocol1->fzp, rbuf->buf, rbuf->len);
552 :
553 8 : if(app>0) return 0;
554 0 : logp("error when appending: %d\n", app);
555 0 : asfd->write_str(asfd, CMD_ERROR, "write failed");
556 : return -1;
557 : }
558 :
559 8 : static int deal_with_filedata(struct asfd *asfd,
560 : struct sdirs *sdirs, struct sbuf *rb,
561 : struct iobuf *rbuf, struct dpth *dpth, struct conf **cconfs)
562 : {
563 8 : iobuf_move(&rb->path, rbuf);
564 :
565 8 : if(rb->protocol1->datapth.buf)
566 : {
567 : // Receiving a delta.
568 4 : if(start_to_receive_delta(sdirs, rb))
569 : {
570 0 : logp("error in start_to_receive_delta\n");
571 0 : return -1;
572 : }
573 : return 0;
574 : }
575 :
576 : // Receiving a whole new file.
577 4 : if(start_to_receive_new_file(asfd, sdirs, cconfs, rb, dpth))
578 : {
579 0 : logp("error in start_to_receive_new_file\n");
580 0 : return -1;
581 : }
582 : return 0;
583 : }
584 :
585 : // returns 1 for finished ok.
586 905 : static int do_stuff_to_receive(struct asfd *asfd,
587 : struct sdirs *sdirs, struct conf **cconfs,
588 : struct sbuf *rb, struct manio *chmanio,
589 : struct dpth *dpth, char **last_requested)
590 : {
591 905 : struct iobuf *rbuf=asfd->rbuf;
592 :
593 905 : iobuf_free_content(rbuf);
594 : // This also attempts to write anything in the write buffer.
595 905 : if(asfd->as->read_write(asfd->as))
596 : {
597 0 : logp("error in %s\n", __func__);
598 0 : return -1;
599 : }
600 :
601 905 : if(!rbuf->buf) return 0;
602 :
603 170 : if(rbuf->cmd==CMD_MESSAGE
604 85 : || rbuf->cmd==CMD_WARNING)
605 : {
606 0 : struct cntr *cntr=NULL;
607 0 : if(cconfs) cntr=get_cntr(cconfs);
608 0 : log_recvd(rbuf, cntr, 0);
609 0 : return 0;
610 : }
611 :
612 85 : if(rb->protocol1->fzp)
613 : {
614 : // Currently writing a file (or meta data)
615 16 : switch(rbuf->cmd)
616 : {
617 : case CMD_APPEND:
618 8 : if(deal_with_receive_append(asfd, rb))
619 : goto error;
620 : return 0;
621 : case CMD_END_FILE:
622 8 : if(deal_with_receive_end_file(asfd, sdirs, rb,
623 : chmanio, cconfs, last_requested))
624 : goto error;
625 : return 0;
626 : default:
627 0 : iobuf_log_unexpected(rbuf, __func__);
628 0 : goto error;
629 : }
630 : }
631 :
632 : // Otherwise, expecting to be told of a file to save.
633 69 : switch(rbuf->cmd)
634 : {
635 : case CMD_DATAPTH:
636 4 : iobuf_move(&rb->protocol1->datapth, rbuf);
637 4 : return 0;
638 : case CMD_ATTRIBS:
639 8 : iobuf_move(&rb->attr, rbuf);
640 8 : attribs_decode(rb);
641 8 : return 0;
642 : case CMD_GEN:
643 5 : if(!strcmp(rbuf->buf, "okbackupphase2end"))
644 : goto end_phase2;
645 0 : iobuf_log_unexpected(rbuf, __func__);
646 0 : goto error;
647 : case CMD_INTERRUPT:
648 : // Interrupt - forget about the last requested
649 : // file if it matches. Otherwise, we can get
650 : // stuck on the select in the async stuff,
651 : // waiting for something that will never arrive.
652 44 : if(*last_requested
653 44 : && !strcmp(rbuf->buf, *last_requested))
654 1 : free_w(last_requested);
655 : return 0;
656 : default:
657 : break;
658 : }
659 8 : if(iobuf_is_filedata(rbuf)
660 0 : || iobuf_is_vssdata(rbuf))
661 : {
662 8 : if(deal_with_filedata(asfd, sdirs, rb, rbuf, dpth, cconfs))
663 : goto error;
664 : return 0;
665 : }
666 0 : iobuf_log_unexpected(rbuf, __func__);
667 :
668 : error:
669 : return -1;
670 : end_phase2:
671 : return 1;
672 : }
673 :
674 1 : static int vss_opts_changed(struct sdirs *sdirs, struct conf **cconfs,
675 : const char *incexc)
676 : {
677 1 : int ret=-1;
678 : struct conf **oldconfs;
679 : struct conf **newconfs;
680 1 : if(!(oldconfs=confs_alloc())
681 1 : || !(newconfs=confs_alloc()))
682 : goto end;
683 1 : confs_init(oldconfs);
684 1 : confs_init(newconfs);
685 :
686 : // Figure out the old config, which is in the incexc file left
687 : // in the current backup directory on the server.
688 1 : if(conf_parse_incexcs_path(oldconfs, sdirs->cincexc))
689 : {
690 : // Assume that the file did not exist, and therefore
691 : // the old split_vss setting is 0.
692 0 : set_int(oldconfs[OPT_SPLIT_VSS], 0);
693 0 : set_int(oldconfs[OPT_STRIP_VSS], 0);
694 : }
695 :
696 : // Figure out the new config, which is either in the incexc file from
697 : // the client, or in the cconf on the server.
698 1 : if(incexc)
699 : {
700 0 : if(conf_parse_incexcs_buf(newconfs, incexc))
701 : {
702 : // Should probably not got here.
703 0 : set_int(newconfs[OPT_SPLIT_VSS], 0);
704 0 : set_int(newconfs[OPT_STRIP_VSS], 0);
705 : }
706 : }
707 : else
708 : {
709 1 : set_int(newconfs[OPT_SPLIT_VSS],
710 1 : get_int(cconfs[OPT_SPLIT_VSS]));
711 1 : set_int(newconfs[OPT_STRIP_VSS],
712 1 : get_int(cconfs[OPT_STRIP_VSS]));
713 : }
714 :
715 1 : if(get_int(newconfs[OPT_SPLIT_VSS])!=get_int(oldconfs[OPT_SPLIT_VSS]))
716 : {
717 0 : logp("split_vss=%d (changed since last backup)\n",
718 0 : get_int(newconfs[OPT_SPLIT_VSS]));
719 0 : ret=1; goto end;
720 : }
721 1 : if(get_int(newconfs[OPT_STRIP_VSS])!=get_int(oldconfs[OPT_STRIP_VSS]))
722 : {
723 0 : logp("strip_vss=%d (changed since last backup)\n",
724 0 : get_int(newconfs[OPT_STRIP_VSS]));
725 0 : ret=1; goto end;
726 : }
727 : ret=0;
728 : end:
729 1 : if(ret==1) logp("All files will be treated as new\n");
730 1 : confs_free(&oldconfs);
731 1 : confs_free(&newconfs);
732 1 : return ret;
733 : }
734 :
735 : // Open the previous (current) manifest.
736 : // If the split_vss setting changed between the previous backup and the new
737 : // backup, do not open the previous manifest. This will have the effect of
738 : // making the client back up everything fresh. Need to do this, otherwise
739 : // toggling split_vss on and off will result in backups that do not work.
740 5 : static int open_previous_manifest(struct manio **cmanio,
741 : struct sdirs *sdirs, const char *incexc, struct conf **cconfs)
742 : {
743 : struct stat statp;
744 10 : if(!lstat(sdirs->cmanifest, &statp)
745 1 : && !vss_opts_changed(sdirs, cconfs, incexc)
746 1 : && !(*cmanio=manio_open(sdirs->cmanifest, "rb", PROTO_1)))
747 : {
748 0 : logp("could not open old manifest %s\n", sdirs->cmanifest);
749 0 : return -1;
750 : }
751 : return 0;
752 : }
753 :
754 10 : int backup_phase2_server_protocol1(struct async *as, struct sdirs *sdirs,
755 : const char *incexc, int resume, struct conf **cconfs)
756 : {
757 10 : int ret=0;
758 10 : man_off_t *p1pos=NULL;
759 10 : struct manio *p1manio=NULL;
760 10 : struct dpth *dpth=NULL;
761 10 : char *deltmppath=NULL;
762 10 : char *last_requested=NULL;
763 10 : struct manio *chmanio=NULL; // changed data
764 10 : struct manio *ucmanio=NULL; // unchanged data
765 10 : struct manio *cmanio=NULL; // previous (current) manifest.
766 10 : struct sbuf *cb=NULL; // file list in current manifest
767 10 : struct sbuf *p1b=NULL; // file list from client
768 10 : struct sbuf *rb=NULL; // receiving file from client
769 10 : struct asfd *asfd=NULL;
770 10 : int breaking=0;
771 10 : int breakcount=0;
772 10 : struct cntr *cntr=NULL;
773 :
774 10 : if(!as)
775 : {
776 1 : logp("async not provided to %s()\n", __func__);
777 1 : goto error;
778 : }
779 9 : if(!sdirs)
780 : {
781 2 : logp("sdirs not provided to %s()\n", __func__);
782 2 : goto error;
783 : }
784 7 : if(!cconfs)
785 : {
786 1 : logp("cconfs not provided to %s()\n", __func__);
787 1 : goto error;
788 : }
789 6 : asfd=as->asfd;
790 6 : if(!asfd)
791 : {
792 1 : logp("asfd not provided to %s()\n", __func__);
793 1 : goto error;
794 : }
795 5 : cntr=get_cntr(cconfs);
796 :
797 5 : if(get_int(cconfs[OPT_BREAKPOINT])>=2000
798 0 : && get_int(cconfs[OPT_BREAKPOINT])<3000)
799 : {
800 0 : breaking=get_int(cconfs[OPT_BREAKPOINT]);
801 0 : breakcount=breaking-2000;
802 : }
803 :
804 5 : logp("Begin phase2 (receive file data)\n");
805 :
806 5 : if(!(dpth=dpth_alloc())
807 5 : || dpth_protocol1_init(dpth, sdirs->currentdata,
808 : get_int(cconfs[OPT_MAX_STORAGE_SUBDIRS])))
809 : goto error;
810 :
811 5 : if(open_previous_manifest(&cmanio, sdirs, incexc, cconfs))
812 : goto error;
813 :
814 5 : if(get_int(cconfs[OPT_DIRECTORY_TREE]))
815 : {
816 : // Need to make sure we do not try to create a path that is
817 : // too long.
818 5 : if(build_path_w(sdirs->treepath)) goto error;
819 5 : mkdir(sdirs->treepath, 0777);
820 5 : treepathlen=strlen(sdirs->treepath);
821 5 : if(init_fs_max(sdirs->treepath))
822 : goto error;
823 : }
824 :
825 5 : if(resume)
826 : {
827 0 : if(!(p1pos=do_resume(sdirs, dpth, cconfs)))
828 : goto error;
829 0 : if(cntr_send_sdirs(asfd, sdirs, cconfs))
830 : goto error;
831 : }
832 :
833 5 : if(!(p1manio=manio_open_phase1(sdirs->phase1data, "rb", PROTO_1))
834 5 : || (resume && manio_seek(p1manio, p1pos)))
835 : goto error;
836 5 : if(!(cb=sbuf_alloc(PROTO_1))
837 5 : || !(p1b=sbuf_alloc(PROTO_1))
838 5 : || !(rb=sbuf_alloc(PROTO_1)))
839 : goto error;
840 :
841 : // Unchanged and changed should now be truncated correctly, we just
842 : // have to open them for appending.
843 : // Data is not getting written to a compressed file.
844 : // This is important for recovery if the power goes.
845 5 : if(!(ucmanio=manio_open_phase2(sdirs->unchanged, "ab", PROTO_1))
846 5 : || !(chmanio=manio_open_phase2(sdirs->changed, "ab", PROTO_1)))
847 : goto error;
848 :
849 : while(1)
850 : {
851 921 : if(breaking && breakcount--==0)
852 0 : return breakpoint(breaking, __func__);
853 :
854 1826 : if(write_status(CNTR_STATUS_BACKUP,
855 1826 : rb->path.buf?rb->path.buf:p1b->path.buf, cntr))
856 : goto error;
857 1842 : if(last_requested
858 921 : || !p1manio
859 16 : || asfd->writebuflen)
860 : {
861 905 : switch(do_stuff_to_receive(asfd, sdirs,
862 : cconfs, rb, chmanio, dpth, &last_requested))
863 : {
864 : case 0: break;
865 : case 1: goto end; // Finished ok.
866 : case -1: goto error;
867 : }
868 : }
869 :
870 916 : switch(do_stuff_to_send(asfd, p1b, &last_requested))
871 : {
872 : case 0: break;
873 2 : case 1: continue;
874 : case -1: goto error;
875 : }
876 :
877 914 : if(!p1manio) continue;
878 :
879 135 : sbuf_free_content(p1b);
880 :
881 135 : switch(manio_read(p1manio, p1b))
882 : {
883 : case 0: break;
884 5 : case 1: manio_close(&p1manio);
885 5 : if(asfd->write_str(asfd,
886 : CMD_GEN, "backupphase2end")) goto error;
887 : break;
888 : case -1: goto error;
889 : }
890 :
891 135 : if(!cmanio)
892 : {
893 : // No old manifest, need to ask for a new file.
894 124 : if(process_new(cconfs, p1b, ucmanio))
895 : goto error;
896 124 : continue;
897 : }
898 :
899 : // Have an old manifest, look for it there.
900 :
901 : // Might already have it, or be ahead in the old
902 : // manifest.
903 11 : if(cb->path.buf) switch(maybe_process_file(asfd,
904 : sdirs, cb, p1b, ucmanio, cconfs))
905 : {
906 : case 0: break;
907 0 : case 1: continue;
908 : case -1: goto error;
909 : }
910 :
911 12 : while(cmanio)
912 : {
913 11 : sbuf_free_content(cb);
914 11 : switch(manio_read(cmanio, cb))
915 : {
916 : case 0: break;
917 1 : case 1: manio_close(&cmanio);
918 1 : if(process_new(cconfs, p1b,
919 : ucmanio)) goto error;
920 1 : continue;
921 : case -1: goto error;
922 : }
923 10 : switch(maybe_process_file(asfd, sdirs,
924 : cb, p1b, ucmanio, cconfs))
925 : {
926 0 : case 0: continue;
927 : case 1: break;
928 : case -1: goto error;
929 : }
930 : break;
931 : }
932 : }
933 :
934 : error:
935 : ret=-1;
936 : end:
937 10 : if(manio_close(&chmanio))
938 : {
939 0 : logp("error closing %s in %s\n", sdirs->changed, __func__);
940 0 : ret=-1;
941 : }
942 10 : if(manio_close(&ucmanio))
943 : {
944 0 : logp("error closing %s in %s\n", sdirs->unchanged, __func__);
945 0 : ret=-1;
946 : }
947 10 : free_w(&deltmppath);
948 10 : free_w(&last_requested);
949 10 : sbuf_free(&cb);
950 10 : sbuf_free(&p1b);
951 10 : sbuf_free(&rb);
952 10 : manio_close(&p1manio);
953 10 : manio_close(&cmanio);
954 10 : dpth_free(&dpth);
955 10 : man_off_t_free(&p1pos);
956 10 : if(!ret && sdirs)
957 5 : unlink(sdirs->phase1data);
958 :
959 10 : logp("End phase2 (receive file data)\n");
960 :
961 10 : return ret;
962 : }
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