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00020
00021 #include "rsync.h"
00022
00023 extern int verbose;
00024 extern int do_xfers;
00025 extern int am_daemon;
00026 extern int am_server;
00027 extern int do_progress;
00028 extern int log_before_transfer;
00029 extern int log_format_has_i;
00030 extern int daemon_log_format_has_i;
00031 extern int csum_length;
00032 extern int read_batch;
00033 extern int write_batch;
00034 extern int batch_gen_fd;
00035 extern int protocol_version;
00036 extern int relative_paths;
00037 extern int preserve_hard_links;
00038 extern int preserve_perms;
00039 extern int basis_dir_cnt;
00040 extern int make_backups;
00041 extern int cleanup_got_literal;
00042 extern int remove_sent_files;
00043 extern int append_mode;
00044 extern int sparse_files;
00045 extern int keep_partial;
00046 extern int checksum_seed;
00047 extern int inplace;
00048 extern int delay_updates;
00049 extern mode_t orig_umask;
00050 extern struct stats stats;
00051 extern char *log_format;
00052 extern char *tmpdir;
00053 extern char *partial_dir;
00054 extern char *basis_dir[];
00055 extern struct file_list *the_file_list;
00056 extern struct filter_list_struct server_filter_list;
00057
00058 static struct bitbag *delayed_bits = NULL;
00059 static int phase = 0;
00060
00061
00062
00063
00064
00065
00066
00067
00068
00069
00070
00071
00072
00073
00074
00075
00076
00077
00078
00079
00080
00081
00082
00083 static int get_tmpname(char *fnametmp, char *fname)
00084 {
00085 char *f;
00086 int length = 0;
00087 int maxname;
00088
00089 if (tmpdir) {
00090
00091 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
00092 fnametmp[length++] = '/';
00093 fnametmp[length] = '\0';
00094 }
00095
00096 if ((f = strrchr(fname, '/')) != NULL) {
00097 ++f;
00098 if (!tmpdir) {
00099 length = f - fname;
00100
00101 strlcpy(fnametmp, fname, length + 1);
00102 }
00103 } else
00104 f = fname;
00105 fnametmp[length++] = '.';
00106 fnametmp[length] = '\0';
00107
00108 maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
00109
00110 if (maxname < 1) {
00111 rprintf(FERROR, "temporary filename too long: %s\n", fname);
00112 fnametmp[0] = '\0';
00113 return 0;
00114 }
00115
00116 strlcpy(fnametmp + length, f, maxname);
00117 strcat(fnametmp + length, ".XXXXXX");
00118
00119 return 1;
00120 }
00121
00122
00123 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
00124 char *fname, int fd, OFF_T total_size)
00125 {
00126 static char file_sum1[MD4_SUM_LENGTH];
00127 static char file_sum2[MD4_SUM_LENGTH];
00128 struct map_struct *mapbuf;
00129 struct sum_struct sum;
00130 int32 len;
00131 OFF_T offset = 0;
00132 OFF_T offset2;
00133 char *data;
00134 int32 i;
00135 char *map = NULL;
00136
00137 read_sum_head(f_in, &sum);
00138
00139 if (fd_r >= 0 && size_r > 0) {
00140 int32 read_size = MAX(sum.blength * 2, 16*1024);
00141 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
00142 if (verbose > 2) {
00143 rprintf(FINFO, "recv mapped %s of size %.0f\n",
00144 fname_r, (double)size_r);
00145 }
00146 } else
00147 mapbuf = NULL;
00148
00149 sum_init(checksum_seed);
00150
00151 if (append_mode) {
00152 OFF_T j;
00153 sum.flength = (OFF_T)sum.count * sum.blength;
00154 if (sum.remainder)
00155 sum.flength -= sum.blength - sum.remainder;
00156 for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
00157 if (do_progress)
00158 show_progress(offset, total_size);
00159 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
00160 CHUNK_SIZE);
00161 offset = j;
00162 }
00163 if (offset < sum.flength) {
00164 int32 len = sum.flength - offset;
00165 if (do_progress)
00166 show_progress(offset, total_size);
00167 sum_update(map_ptr(mapbuf, offset, len), len);
00168 offset = sum.flength;
00169 }
00170 if (fd != -1 && do_lseek(fd, offset, SEEK_SET) != offset) {
00171 rsyserr(FERROR, errno, "lseek failed on %s",
00172 full_fname(fname));
00173 exit_cleanup(RERR_FILEIO);
00174 }
00175 }
00176
00177 while ((i = recv_token(f_in, &data)) != 0) {
00178 if (do_progress)
00179 show_progress(offset, total_size);
00180
00181 if (i > 0) {
00182 if (verbose > 3) {
00183 rprintf(FINFO,"data recv %d at %.0f\n",
00184 i,(double)offset);
00185 }
00186
00187 stats.literal_data += i;
00188 cleanup_got_literal = 1;
00189
00190 sum_update(data, i);
00191
00192 if (fd != -1 && write_file(fd,data,i) != i)
00193 goto report_write_error;
00194 offset += i;
00195 continue;
00196 }
00197
00198 i = -(i+1);
00199 offset2 = i * (OFF_T)sum.blength;
00200 len = sum.blength;
00201 if (i == (int)sum.count-1 && sum.remainder != 0)
00202 len = sum.remainder;
00203
00204 stats.matched_data += len;
00205
00206 if (verbose > 3) {
00207 rprintf(FINFO,
00208 "chunk[%d] of size %ld at %.0f offset=%.0f\n",
00209 i, (long)len, (double)offset2, (double)offset);
00210 }
00211
00212 if (mapbuf) {
00213 map = map_ptr(mapbuf,offset2,len);
00214
00215 see_token(map, len);
00216 sum_update(map, len);
00217 }
00218
00219 if (inplace) {
00220 if (offset == offset2 && fd != -1) {
00221 if (flush_write_file(fd) < 0)
00222 goto report_write_error;
00223 offset += len;
00224 if (do_lseek(fd, len, SEEK_CUR) != offset) {
00225 rsyserr(FERROR, errno,
00226 "lseek failed on %s",
00227 full_fname(fname));
00228 exit_cleanup(RERR_FILEIO);
00229 }
00230 continue;
00231 }
00232 }
00233 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
00234 goto report_write_error;
00235 offset += len;
00236 }
00237
00238 if (flush_write_file(fd) < 0)
00239 goto report_write_error;
00240
00241 #ifdef HAVE_FTRUNCATE
00242 if (inplace && fd != -1)
00243 ftruncate(fd, offset);
00244 #endif
00245
00246 if (do_progress)
00247 end_progress(total_size);
00248
00249 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
00250 report_write_error:
00251 rsyserr(FERROR, errno, "write failed on %s",
00252 full_fname(fname));
00253 exit_cleanup(RERR_FILEIO);
00254 }
00255
00256 sum_end(file_sum1);
00257
00258 if (mapbuf)
00259 unmap_file(mapbuf);
00260
00261 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
00262 if (verbose > 2)
00263 rprintf(FINFO,"got file_sum\n");
00264 if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
00265 return 0;
00266 return 1;
00267 }
00268
00269
00270 static void discard_receive_data(int f_in, OFF_T length)
00271 {
00272 receive_data(f_in, NULL, -1, 0, NULL, -1, length);
00273 }
00274
00275 static void handle_delayed_updates(struct file_list *flist, char *local_name)
00276 {
00277 char *fname, *partialptr, numbuf[4];
00278 int i;
00279
00280 for (i = -1; (i = bitbag_next_bit(delayed_bits, i)) >= 0; ) {
00281 struct file_struct *file = flist->files[i];
00282 fname = local_name ? local_name : f_name(file, NULL);
00283 if ((partialptr = partial_dir_fname(fname)) != NULL) {
00284 if (make_backups && !make_backup(fname))
00285 continue;
00286 if (verbose > 2) {
00287 rprintf(FINFO, "renaming %s to %s\n",
00288 partialptr, fname);
00289 }
00290
00291
00292 if (do_rename(partialptr, fname) < 0) {
00293 rsyserr(FERROR, errno,
00294 "rename failed for %s (from %s)",
00295 full_fname(fname), partialptr);
00296 } else {
00297 if (remove_sent_files
00298 || (preserve_hard_links
00299 && file->link_u.links)) {
00300 SIVAL(numbuf, 0, i);
00301 send_msg(MSG_SUCCESS,numbuf,4);
00302 }
00303 handle_partial_dir(partialptr, PDIR_DELETE);
00304 }
00305 }
00306 }
00307 }
00308
00309 static int get_next_gen_i(int batch_gen_fd, int next_gen_i, int desired_i)
00310 {
00311 while (next_gen_i < desired_i) {
00312 if (next_gen_i >= 0) {
00313 rprintf(FINFO,
00314 "(No batched update for%s \"%s\")\n",
00315 phase ? " resend of" : "",
00316 f_name(the_file_list->files[next_gen_i], NULL));
00317 }
00318 next_gen_i = read_int(batch_gen_fd);
00319 if (next_gen_i == -1)
00320 next_gen_i = the_file_list->count;
00321 }
00322 return next_gen_i;
00323 }
00324
00325
00326
00327
00328
00329
00330 int recv_files(int f_in, struct file_list *flist, char *local_name)
00331 {
00332 int next_gen_i = -1;
00333 int fd1,fd2;
00334 STRUCT_STAT st;
00335 int iflags, xlen;
00336 char *fname, fbuf[MAXPATHLEN];
00337 char xname[MAXPATHLEN];
00338 char fnametmp[MAXPATHLEN];
00339 char *fnamecmp, *partialptr, numbuf[4];
00340 char fnamecmpbuf[MAXPATHLEN];
00341 uchar fnamecmp_type;
00342 struct file_struct *file;
00343 struct stats initial_stats;
00344 int save_make_backups = make_backups;
00345 int itemizing = am_daemon ? daemon_log_format_has_i
00346 : !am_server && log_format_has_i;
00347 int max_phase = protocol_version >= 29 ? 2 : 1;
00348 int dflt_perms = (ACCESSPERMS & ~orig_umask);
00349 #ifdef SUPPORT_ACLS
00350 char *parent_dirname = "";
00351 #endif
00352 int i, recv_ok;
00353
00354 if (verbose > 2)
00355 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
00356
00357 if (flist->hlink_pool) {
00358 pool_destroy(flist->hlink_pool);
00359 flist->hlink_pool = NULL;
00360 }
00361
00362 if (delay_updates)
00363 delayed_bits = bitbag_create(flist->count);
00364
00365 while (1) {
00366 cleanup_disable();
00367
00368 i = read_int(f_in);
00369 if (i == -1) {
00370 if (read_batch) {
00371 get_next_gen_i(batch_gen_fd, next_gen_i,
00372 flist->count);
00373 next_gen_i = -1;
00374 }
00375 if (++phase > max_phase)
00376 break;
00377 csum_length = SUM_LENGTH;
00378 if (verbose > 2)
00379 rprintf(FINFO, "recv_files phase=%d\n", phase);
00380 if (phase == 2 && delay_updates)
00381 handle_delayed_updates(flist, local_name);
00382 send_msg(MSG_DONE, "", 0);
00383 if (keep_partial && !partial_dir)
00384 make_backups = 0;
00385 if (append_mode) {
00386 append_mode = 0;
00387 sparse_files = 0;
00388 }
00389 continue;
00390 }
00391
00392 iflags = read_item_attrs(f_in, -1, i, &fnamecmp_type,
00393 xname, &xlen);
00394 if (iflags == ITEM_IS_NEW)
00395 continue;
00396
00397 file = flist->files[i];
00398 fname = local_name ? local_name : f_name(file, fbuf);
00399
00400 if (verbose > 2)
00401 rprintf(FINFO, "recv_files(%s)\n", fname);
00402
00403 if (!(iflags & ITEM_TRANSFER)) {
00404 maybe_log_item(file, iflags, itemizing, xname);
00405 continue;
00406 }
00407 if (phase == 2) {
00408 rprintf(FERROR,
00409 "got transfer request in phase 2 [%s]\n",
00410 who_am_i());
00411 exit_cleanup(RERR_PROTOCOL);
00412 }
00413
00414 stats.current_file_index = i;
00415 stats.num_transferred_files++;
00416 stats.total_transferred_size += file->length;
00417 cleanup_got_literal = 0;
00418
00419 if (server_filter_list.head
00420 && check_filter(&server_filter_list, fname, 0) < 0) {
00421 rprintf(FERROR, "attempt to hack rsync failed.\n");
00422 exit_cleanup(RERR_PROTOCOL);
00423 }
00424
00425 if (!do_xfers) {
00426 if (!am_server && log_format)
00427 log_item(file, &stats, iflags, NULL);
00428 if (read_batch)
00429 discard_receive_data(f_in, file->length);
00430 continue;
00431 }
00432 if (write_batch < 0) {
00433 log_item(file, &stats, iflags, NULL);
00434 if (!am_server)
00435 discard_receive_data(f_in, file->length);
00436 continue;
00437 }
00438
00439 if (read_batch) {
00440 next_gen_i = get_next_gen_i(batch_gen_fd, next_gen_i, i);
00441 if (i < next_gen_i) {
00442 rprintf(FINFO,
00443 "(Skipping batched update for \"%s\")\n",
00444 fname);
00445 discard_receive_data(f_in, file->length);
00446 continue;
00447 }
00448 next_gen_i = -1;
00449 }
00450
00451 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
00452
00453 if (protocol_version >= 29) {
00454 switch (fnamecmp_type) {
00455 case FNAMECMP_FNAME:
00456 fnamecmp = fname;
00457 break;
00458 case FNAMECMP_PARTIAL_DIR:
00459 fnamecmp = partialptr;
00460 break;
00461 case FNAMECMP_BACKUP:
00462 fnamecmp = get_backup_name(fname);
00463 break;
00464 case FNAMECMP_FUZZY:
00465 if (file->dirname) {
00466 pathjoin(fnamecmpbuf, MAXPATHLEN,
00467 file->dirname, xname);
00468 fnamecmp = fnamecmpbuf;
00469 } else
00470 fnamecmp = xname;
00471 break;
00472 default:
00473 if (fnamecmp_type >= basis_dir_cnt) {
00474 rprintf(FERROR,
00475 "invalid basis_dir index: %d.\n",
00476 fnamecmp_type);
00477 exit_cleanup(RERR_PROTOCOL);
00478 }
00479 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
00480 basis_dir[fnamecmp_type], fname);
00481 fnamecmp = fnamecmpbuf;
00482 break;
00483 }
00484 if (!fnamecmp || (server_filter_list.head
00485 && check_filter(&server_filter_list, fname, 0) < 0))
00486 fnamecmp = fname;
00487 } else {
00488
00489
00490 if (inplace && make_backups) {
00491 if (!(fnamecmp = get_backup_name(fname)))
00492 fnamecmp = fname;
00493 } else if (partial_dir && partialptr)
00494 fnamecmp = partialptr;
00495 else
00496 fnamecmp = fname;
00497 }
00498
00499 initial_stats = stats;
00500
00501
00502 fd1 = do_open(fnamecmp, O_RDONLY, 0);
00503
00504 if (fd1 == -1 && protocol_version < 29) {
00505 if (fnamecmp != fname) {
00506 fnamecmp = fname;
00507 fd1 = do_open(fnamecmp, O_RDONLY, 0);
00508 }
00509
00510 if (fd1 == -1 && basis_dir[0]) {
00511
00512 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
00513 basis_dir[0], fname);
00514 fnamecmp = fnamecmpbuf;
00515 fd1 = do_open(fnamecmp, O_RDONLY, 0);
00516 }
00517 }
00518
00519 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
00520 rsyserr(FERROR, errno, "fstat %s failed",
00521 full_fname(fnamecmp));
00522 discard_receive_data(f_in, file->length);
00523 close(fd1);
00524 continue;
00525 }
00526
00527 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
00528
00529
00530
00531
00532
00533 rprintf(FERROR,"recv_files: %s is a directory\n",
00534 full_fname(fnamecmp));
00535 discard_receive_data(f_in, file->length);
00536 close(fd1);
00537 continue;
00538 }
00539
00540 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
00541 close(fd1);
00542 fd1 = -1;
00543 }
00544
00545
00546
00547 if (!preserve_perms) {
00548 int exists = fd1 != -1;
00549 #ifdef SUPPORT_ACLS
00550 char *dn = file->dirname ? file->dirname : ".";
00551 if (parent_dirname != dn
00552 && strcmp(parent_dirname, dn) != 0) {
00553 dflt_perms = default_perms_for_dir(dn);
00554 parent_dirname = dn;
00555 }
00556 #endif
00557 file->mode = dest_mode(file->mode, st.st_mode,
00558 dflt_perms, exists);
00559 }
00560
00561
00562 if (inplace) {
00563 fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
00564 if (fd2 == -1) {
00565 rsyserr(FERROR, errno, "open %s failed",
00566 full_fname(fname));
00567 discard_receive_data(f_in, file->length);
00568 if (fd1 != -1)
00569 close(fd1);
00570 continue;
00571 }
00572 } else {
00573 if (!get_tmpname(fnametmp,fname)) {
00574 discard_receive_data(f_in, file->length);
00575 if (fd1 != -1)
00576 close(fd1);
00577 continue;
00578 }
00579
00580
00581
00582
00583
00584
00585
00586 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
00587
00588
00589
00590
00591 if (fd2 == -1 && relative_paths && errno == ENOENT
00592 && create_directory_path(fnametmp) == 0) {
00593
00594 get_tmpname(fnametmp, fname);
00595 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
00596 }
00597 if (fd2 == -1) {
00598 rsyserr(FERROR, errno, "mkstemp %s failed",
00599 full_fname(fnametmp));
00600 discard_receive_data(f_in, file->length);
00601 if (fd1 != -1)
00602 close(fd1);
00603 continue;
00604 }
00605
00606 if (keep_partial)
00607 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
00608 }
00609
00610
00611 if (log_before_transfer)
00612 log_item(file, &initial_stats, iflags, NULL);
00613 else if (!am_server && verbose && do_progress)
00614 rprintf(FINFO, "%s\n", fname);
00615
00616
00617 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
00618 fname, fd2, file->length);
00619
00620 if (!log_before_transfer)
00621 log_item(file, &initial_stats, iflags, NULL);
00622
00623 if (fd1 != -1)
00624 close(fd1);
00625 if (close(fd2) < 0) {
00626 rsyserr(FERROR, errno, "close failed on %s",
00627 full_fname(fnametmp));
00628 exit_cleanup(RERR_FILEIO);
00629 }
00630
00631 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
00632 if (partialptr == fname || *partial_dir == '/')
00633 partialptr = NULL;
00634 finish_transfer(fname, fnametmp, partialptr,
00635 file, recv_ok, 1);
00636 if (fnamecmp == partialptr) {
00637 do_unlink(partialptr);
00638 handle_partial_dir(partialptr, PDIR_DELETE);
00639 }
00640 } else if (keep_partial && partialptr
00641 && handle_partial_dir(partialptr, PDIR_CREATE)) {
00642 finish_transfer(partialptr, fnametmp, NULL,
00643 file, recv_ok, !partial_dir);
00644 if (delay_updates && recv_ok) {
00645 bitbag_set_bit(delayed_bits, i);
00646 recv_ok = -1;
00647 }
00648 } else {
00649 partialptr = NULL;
00650 do_unlink(fnametmp);
00651 }
00652
00653 cleanup_disable();
00654
00655 if (recv_ok > 0) {
00656 if (remove_sent_files
00657 || (preserve_hard_links && file->link_u.links)) {
00658 SIVAL(numbuf, 0, i);
00659 send_msg(MSG_SUCCESS, numbuf, 4);
00660 }
00661 } else if (!recv_ok) {
00662 int msgtype = phase || read_batch ? FERROR : FINFO;
00663 if (msgtype == FERROR || verbose) {
00664 char *errstr, *redostr, *keptstr;
00665 if (!(keep_partial && partialptr) && !inplace)
00666 keptstr = "discarded";
00667 else if (partial_dir)
00668 keptstr = "put into partial-dir";
00669 else
00670 keptstr = "retained";
00671 if (msgtype == FERROR) {
00672 errstr = "ERROR";
00673 redostr = "";
00674 } else {
00675 errstr = "WARNING";
00676 redostr = " (will try again)";
00677 }
00678 rprintf(msgtype,
00679 "%s: %s failed verification -- update %s%s.\n",
00680 errstr, fname, keptstr, redostr);
00681 }
00682 if (!phase) {
00683 SIVAL(numbuf, 0, i);
00684 send_msg(MSG_REDO, numbuf, 4);
00685 }
00686 }
00687 }
00688 make_backups = save_make_backups;
00689
00690 if (phase == 2 && delay_updates)
00691 handle_delayed_updates(flist, local_name);
00692
00693 if (verbose > 2)
00694 rprintf(FINFO,"recv_files finished\n");
00695
00696 return 0;
00697 }