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