2 * Bacula File Daemon backup.c send file attributes and data
3 * to the Storage daemon.
5 * Kern Sibbald, March MM
11 Bacula® - The Network Backup Solution
13 Copyright (C) 2000-2006 Free Software Foundation Europe e.V.
15 The main author of Bacula is Kern Sibbald, with contributions from
16 many others, a complete list can be found in the file AUTHORS.
17 This program is Free Software; you can redistribute it and/or
18 modify it under the terms of version two of the GNU General Public
19 License as published by the Free Software Foundation plus additions
20 that are listed in the file LICENSE.
22 This program is distributed in the hope that it will be useful, but
23 WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
32 Bacula® is a registered trademark of John Walker.
33 The licensor of Bacula is the Free Software Foundation Europe
34 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
35 Switzerland, email:ftf@fsfeurope.org.
41 /* Forward referenced functions */
42 static int save_file(FF_PKT *ff_pkt, void *pkt, bool top_level);
43 static int send_data(JCR *jcr, int stream, FF_PKT *ff_pkt, DIGEST *digest, DIGEST *signature_digest);
44 static bool encode_and_send_attributes(JCR *jcr, FF_PKT *ff_pkt, int &data_stream);
45 static bool read_and_send_acl(JCR *jcr, int acltype, int stream);
48 * Find all the requested files and send them
49 * to the Storage daemon.
51 * Note, we normally carry on a one-way
52 * conversation from this point on with the SD, simply blasting
53 * data to him. To properly know what is going on, we
54 * also run a "heartbeat" monitor which reads the socket and
55 * reacts accordingly (at the moment it has nothing to do
56 * except echo the heartbeat to the Director).
59 bool blast_data_to_storage_daemon(JCR *jcr, char *addr)
63 // TODO landonf: Allow user to specify encryption algorithm
64 crypto_cipher_t cipher = CRYPTO_CIPHER_AES_128_CBC;
67 sd = jcr->store_bsock;
69 set_jcr_job_status(jcr, JS_Running);
71 Dmsg1(300, "bfiled: opened data connection %d to stored\n", sd->fd);
74 CLIENT *client = (CLIENT *)GetNextRes(R_CLIENT, NULL);
78 buf_size = client->max_network_buffer_size;
80 buf_size = 0; /* use default */
82 if (!bnet_set_buffer_size(sd, buf_size, BNET_SETBUF_WRITE)) {
83 set_jcr_job_status(jcr, JS_ErrorTerminated);
84 Jmsg(jcr, M_FATAL, 0, _("Cannot set buffer size FD->SD.\n"));
88 jcr->buf_size = sd->msglen;
89 /* Adjust for compression so that output buffer is
90 * 12 bytes + 0.1% larger than input buffer plus 18 bytes.
91 * This gives a bit extra plus room for the sparse addr if any.
92 * Note, we adjust the read size to be smaller so that the
93 * same output buffer can be used without growing it.
95 * The zlib compression workset is initialized here to minimise
96 * the "per file" load. The jcr member is only set, if the init was successful.
98 jcr->compress_buf_size = jcr->buf_size + ((jcr->buf_size+999) / 1000) + 30;
99 jcr->compress_buf = get_memory(jcr->compress_buf_size);
102 z_stream *pZlibStream = (z_stream*)malloc(sizeof(z_stream));
104 pZlibStream->zalloc = Z_NULL;
105 pZlibStream->zfree = Z_NULL;
106 pZlibStream->opaque = Z_NULL;
107 pZlibStream->state = Z_NULL;
109 if (deflateInit(pZlibStream, Z_DEFAULT_COMPRESSION) == Z_OK)
110 jcr->pZLIB_compress_workset = pZlibStream;
116 /* Create encryption session data and a cached, DER-encoded session data
117 * structure. We use a single session key for each backup, so we'll encode
118 * the session data only once. */
119 if (jcr->pki_encrypt) {
122 /* Create per-job session encryption context */
123 jcr->pki_session = crypto_session_new(cipher, jcr->pki_recipients);
125 /* Get the session data size */
126 if (crypto_session_encode(jcr->pki_session, (uint8_t *)0, &size) == false) {
127 Jmsg(jcr, M_FATAL, 0, _("An error occured while encrypting the stream.\n"));
131 /* Allocate buffer */
132 jcr->pki_session_encoded = (uint8_t *)malloc(size);
133 if (!jcr->pki_session_encoded) {
137 /* Encode session data */
138 if (crypto_session_encode(jcr->pki_session, jcr->pki_session_encoded, &size) == false) {
139 Jmsg(jcr, M_FATAL, 0, _("An error occured while encrypting the stream.\n"));
143 /* ... and store the encoded size */
144 jcr->pki_session_encoded_size = size;
146 /* Allocate the encryption/decryption buffer */
147 jcr->crypto_buf = get_memory(CRYPTO_CIPHER_MAX_BLOCK_SIZE);
150 Dmsg1(300, "set_find_options ff=%p\n", jcr->ff);
151 set_find_options((FF_PKT *)jcr->ff, jcr->incremental, jcr->mtime);
152 Dmsg0(300, "start find files\n");
154 start_heartbeat_monitor(jcr);
156 jcr->acl_text = get_pool_memory(PM_MESSAGE);
158 /* Subroutine save_file() is called for each file */
159 if (!find_files(jcr, (FF_PKT *)jcr->ff, save_file, (void *)jcr)) {
160 ok = false; /* error */
161 set_jcr_job_status(jcr, JS_ErrorTerminated);
162 // Jmsg(jcr, M_FATAL, 0, _("Find files error.\n"));
165 free_pool_memory(jcr->acl_text);
167 stop_heartbeat_monitor(jcr);
169 bnet_sig(sd, BNET_EOD); /* end of sending data */
175 if (jcr->compress_buf) {
176 free_pool_memory(jcr->compress_buf);
177 jcr->compress_buf = NULL;
179 if (jcr->pZLIB_compress_workset) {
180 /* Free the zlib stream */
182 deflateEnd((z_stream *)jcr->pZLIB_compress_workset);
184 free (jcr->pZLIB_compress_workset);
185 jcr->pZLIB_compress_workset = NULL;
187 if (jcr->crypto_buf) {
188 free_pool_memory(jcr->crypto_buf);
189 jcr->crypto_buf = NULL;
191 if (jcr->pki_session) {
192 crypto_session_free(jcr->pki_session);
194 if (jcr->pki_session_encoded) {
195 free(jcr->pki_session_encoded);
198 Dmsg1(100, "end blast_data ok=%d\n", ok);
203 * Called here by find() for each file included.
204 * This is a callback. The original is find_files() above.
206 * Send the file and its data to the Storage daemon.
210 * -1 to ignore file/directory (not used here)
212 static int save_file(FF_PKT *ff_pkt, void *vjcr, bool top_level)
214 int stat, data_stream;
215 DIGEST *digest = NULL;
216 DIGEST *signing_digest = NULL;
217 int digest_stream = STREAM_NONE;
218 bool has_file_data = false;
219 // TODO landonf: Allow the user to specify the digest algorithm
221 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA256;
223 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA1;
225 JCR *jcr = (JCR *)vjcr;
226 BSOCK *sd = jcr->store_bsock;
228 if (job_canceled(jcr)) {
232 jcr->num_files_examined++; /* bump total file count */
234 switch (ff_pkt->type) {
235 case FT_LNKSAVED: /* Hard linked, file already saved */
236 Dmsg2(130, "FT_LNKSAVED hard link: %s => %s\n", ff_pkt->fname, ff_pkt->link);
239 Dmsg1(130, "FT_REGE saving: %s\n", ff_pkt->fname);
240 has_file_data = true;
243 Dmsg1(130, "FT_REG saving: %s\n", ff_pkt->fname);
244 has_file_data = true;
247 Dmsg2(130, "FT_LNK saving: %s -> %s\n", ff_pkt->fname, ff_pkt->link);
250 jcr->num_files_examined--; /* correct file count */
251 return 1; /* not used */
253 Jmsg(jcr, M_INFO, 1, _(" Recursion turned off. Will not descend from %s into %s\n"),
254 ff_pkt->top_fname, ff_pkt->fname);
255 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
258 /* Suppress message for /dev filesystems */
259 if (strncmp(ff_pkt->fname, "/dev/", 5) != 0) {
260 Jmsg(jcr, M_INFO, 1, _(" %s is a different filesystem. Will not descend from %s into %s\n"),
261 ff_pkt->fname, ff_pkt->top_fname, ff_pkt->fname);
263 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
266 Jmsg(jcr, M_INFO, 1, _(" Disallowed filesystem. Will not descend from %s into %s\n"),
267 ff_pkt->top_fname, ff_pkt->fname);
268 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
271 Jmsg(jcr, M_INFO, 1, _(" Disallowed drive type. Will not descend into %s\n"),
275 Dmsg1(130, "FT_DIREND: %s\n", ff_pkt->link);
278 Dmsg1(130, "FT_SPEC saving: %s\n", ff_pkt->fname);
281 Dmsg1(130, "FT_RAW saving: %s\n", ff_pkt->fname);
282 has_file_data = true;
285 Dmsg1(130, "FT_FIFO saving: %s\n", ff_pkt->fname);
289 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not access %s: ERR=%s\n"), ff_pkt->fname,
290 be.strerror(ff_pkt->ff_errno));
296 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not follow link %s: ERR=%s\n"), ff_pkt->fname,
297 be.strerror(ff_pkt->ff_errno));
303 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not stat %s: ERR=%s\n"), ff_pkt->fname,
304 be.strerror(ff_pkt->ff_errno));
310 Jmsg(jcr, M_SKIPPED, 1, _(" Unchanged file skipped: %s\n"), ff_pkt->fname);
313 Jmsg(jcr, M_NOTSAVED, 0, _(" Archive file not saved: %s\n"), ff_pkt->fname);
317 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not open directory %s: ERR=%s\n"), ff_pkt->fname,
318 be.strerror(ff_pkt->ff_errno));
323 Jmsg(jcr, M_NOTSAVED, 0, _(" Unknown file type %d; not saved: %s\n"), ff_pkt->type, ff_pkt->fname);
328 Dmsg1(130, "bfiled: sending %s to stored\n", ff_pkt->fname);
330 /* Digests and encryption are only useful if there's file data */
333 * Setup for digest handling. If this fails, the digest will be set to NULL
336 if (ff_pkt->flags & FO_MD5) {
337 digest = crypto_digest_new(CRYPTO_DIGEST_MD5);
338 digest_stream = STREAM_MD5_DIGEST;
340 } else if (ff_pkt->flags & FO_SHA1) {
341 digest = crypto_digest_new(CRYPTO_DIGEST_SHA1);
342 digest_stream = STREAM_SHA1_DIGEST;
344 } else if (ff_pkt->flags & FO_SHA256) {
345 digest = crypto_digest_new(CRYPTO_DIGEST_SHA256);
346 digest_stream = STREAM_SHA256_DIGEST;
348 } else if (ff_pkt->flags & FO_SHA512) {
349 digest = crypto_digest_new(CRYPTO_DIGEST_SHA512);
350 digest_stream = STREAM_SHA512_DIGEST;
353 /* Did digest initialization fail? */
354 if (digest_stream != STREAM_NONE && digest == NULL) {
355 Jmsg(jcr, M_WARNING, 0, _("%s digest initialization failed\n"),
356 stream_to_ascii(digest_stream));
360 * Set up signature digest handling. If this fails, the signature digest will be set to
363 // TODO landonf: We should really only calculate the digest once, for both verification and signing.
365 signing_digest = crypto_digest_new(signing_algorithm);
367 /* Full-stop if a failure occured initializing the signature digest */
368 if (signing_digest == NULL) {
369 Jmsg(jcr, M_NOTSAVED, 0, _("%s signature digest initialization failed\n"),
370 stream_to_ascii(signing_algorithm));
376 /* Enable encryption */
377 if (jcr->pki_encrypt) {
378 ff_pkt->flags |= FO_ENCRYPT;
382 /* Initialise the file descriptor we use for data and other streams. */
384 if (ff_pkt->flags & FO_PORTABLE) {
385 set_portable_backup(&ff_pkt->bfd); /* disable Win32 BackupRead() */
387 if (ff_pkt->reader) {
388 if (!set_prog(&ff_pkt->bfd, ff_pkt->reader, jcr)) {
389 Jmsg(jcr, M_FATAL, 0, _("Python reader program \"%s\" not found.\n"),
395 /* Send attributes -- must be done after binit() */
396 if (!encode_and_send_attributes(jcr, ff_pkt, data_stream)) {
401 * Open any file with data that we intend to save, then save it.
403 * Note, if is_win32_backup, we must open the Directory so that
404 * the BackupRead will save its permissions and ownership streams.
406 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
407 ff_pkt->statp.st_size > 0) ||
408 ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO ||
409 (!is_portable_backup(&ff_pkt->bfd) && ff_pkt->type == FT_DIREND)) {
411 if (ff_pkt->type == FT_FIFO) {
412 tid = start_thread_timer(pthread_self(), 60);
416 int noatime = ff_pkt->flags & FO_NOATIME ? O_NOATIME : 0;
417 if (bopen(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY | noatime, 0) < 0) {
418 ff_pkt->ff_errno = errno;
420 Jmsg(jcr, M_NOTSAVED, 0, _(" Cannot open %s: ERR=%s.\n"), ff_pkt->fname,
424 stop_thread_timer(tid);
430 stop_thread_timer(tid);
434 /* Set up the encryption context, send the session data to the SD */
435 if (jcr->pki_encrypt) {
436 /* Send our header */
437 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_ENCRYPTED_SESSION_DATA);
439 /* Grow the bsock buffer to fit our message if necessary */
440 if (sizeof_pool_memory(sd->msg) < jcr->pki_session_encoded_size) {
441 sd->msg = realloc_pool_memory(sd->msg, jcr->pki_session_encoded_size);
444 /* Copy our message over and send it */
445 memcpy(sd->msg, jcr->pki_session_encoded, jcr->pki_session_encoded_size);
446 sd->msglen = jcr->pki_session_encoded_size;
447 jcr->JobBytes += sd->msglen;
450 bnet_sig(sd, BNET_EOD);
453 stat = send_data(jcr, data_stream, ff_pkt, digest, signing_digest);
454 bclose(&ff_pkt->bfd);
460 #ifdef HAVE_DARWIN_OS
461 /* Regular files can have resource forks and Finder Info */
462 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
463 ff_pkt->flags & FO_HFSPLUS)) {
464 if (ff_pkt->hfsinfo.rsrclength > 0) {
467 if (!bopen_rsrc(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY, 0) < 0) {
468 ff_pkt->ff_errno = errno;
470 Jmsg(jcr, M_NOTSAVED, -1, _(" Cannot open resource fork for %s: ERR=%s.\n"), ff_pkt->fname,
473 if (is_bopen(&ff_pkt->bfd)) {
474 bclose(&ff_pkt->bfd);
478 flags = ff_pkt->flags;
479 ff_pkt->flags &= ~(FO_GZIP|FO_SPARSE);
480 if (flags & FO_ENCRYPT) {
481 rsrc_stream = STREAM_ENCRYPTED_MACOS_FORK_DATA;
483 rsrc_stream = STREAM_MACOS_FORK_DATA;
485 stat = send_data(jcr, rsrc_stream, ff_pkt, digest, signing_digest);
486 ff_pkt->flags = flags;
487 bclose(&ff_pkt->bfd);
493 Dmsg1(300, "Saving Finder Info for \"%s\"\n", ff_pkt->fname);
494 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_HFSPLUS_ATTRIBUTES);
495 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
496 memcpy(sd->msg, ff_pkt->hfsinfo.fndrinfo, 32);
499 crypto_digest_update(digest, (uint8_t *)sd->msg, sd->msglen);
501 if (signing_digest) {
502 crypto_digest_update(signing_digest, (uint8_t *)sd->msg, sd->msglen);
505 bnet_sig(sd, BNET_EOD);
509 if (ff_pkt->flags & FO_ACL) {
510 /* Read access ACLs for files, dirs and links */
511 if (!read_and_send_acl(jcr, BACL_TYPE_ACCESS, STREAM_UNIX_ATTRIBUTES_ACCESS_ACL)) {
514 /* Directories can have default ACLs too */
515 if (ff_pkt->type == FT_DIREND && (BACL_CAP & BACL_CAP_DEFAULTS_DIR)) {
516 if (!read_and_send_acl(jcr, BACL_TYPE_DEFAULT, STREAM_UNIX_ATTRIBUTES_DEFAULT_ACL)) {
522 /* Terminate the signing digest and send it to the Storage daemon */
523 if (signing_digest) {
528 if ((sig = crypto_sign_new()) == NULL) {
529 Jmsg(jcr, M_FATAL, 0, _("Failed to allocate memory for stream signature.\n"));
533 if (crypto_sign_add_signer(sig, signing_digest, jcr->pki_keypair) == false) {
534 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
538 /* Get signature size */
539 if (crypto_sign_encode(sig, NULL, &size) == false) {
540 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
544 /* Allocate signature data buffer */
545 buf = (uint8_t *)malloc(size);
547 crypto_sign_free(sig);
551 /* Encode signature data */
552 if (crypto_sign_encode(sig, buf, &size) == false) {
553 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
557 /* Send our header */
558 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_SIGNED_DIGEST);
559 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
561 /* Grow the bsock buffer to fit our message if necessary */
562 if (sizeof_pool_memory(sd->msg) < (int32_t)size) {
563 sd->msg = realloc_pool_memory(sd->msg, size);
566 /* Copy our message over and send it */
567 memcpy(sd->msg, buf, size);
570 bnet_sig(sd, BNET_EOD); /* end of checksum */
572 crypto_digest_free(signing_digest);
573 crypto_sign_free(sig);
577 /* Terminate any digest and send it to Storage daemon and the Director */
579 uint8_t md[CRYPTO_DIGEST_MAX_SIZE];
584 if (crypto_digest_finalize(digest, md, &size)) {
585 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, digest_stream);
586 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
587 memcpy(sd->msg, md, size);
590 bnet_sig(sd, BNET_EOD); /* end of checksum */
593 crypto_digest_free(digest);
600 * Send data read from an already open file descriptor.
602 * We return 1 on sucess and 0 on errors.
605 * We use ff_pkt->statp.st_size when FO_SPARSE to know when to stop
607 * Currently this is not a problem as the only other stream, resource forks,
608 * are not handled as sparse files.
610 int send_data(JCR *jcr, int stream, FF_PKT *ff_pkt, DIGEST *digest,
611 DIGEST *signing_digest)
613 BSOCK *sd = jcr->store_bsock;
614 uint64_t fileAddr = 0; /* file address */
616 int32_t rsize = jcr->buf_size; /* read buffer size */
618 CIPHER_CONTEXT *cipher_ctx = NULL; /* Quell bogus uninitialized warnings */
619 const uint8_t *cipher_input;
620 uint32_t cipher_input_len;
621 uint32_t cipher_block_size;
622 uint32_t encrypted_len;
623 #ifdef FD_NO_SEND_TEST
628 rbuf = sd->msg; /* read buffer */
629 wbuf = sd->msg; /* write buffer */
630 cipher_input = (uint8_t *)rbuf; /* encrypt uncompressed data */
632 Dmsg1(300, "Saving data, type=%d\n", ff_pkt->type);
635 uLong compress_len = 0;
636 uLong max_compress_len = 0;
637 const Bytef *cbuf = NULL;
640 if (ff_pkt->flags & FO_GZIP) {
641 if (ff_pkt->flags & FO_SPARSE) {
642 cbuf = (Bytef *)jcr->compress_buf + SPARSE_FADDR_SIZE;
643 max_compress_len = jcr->compress_buf_size - SPARSE_FADDR_SIZE;
645 cbuf = (Bytef *)jcr->compress_buf;
646 max_compress_len = jcr->compress_buf_size; /* set max length */
648 wbuf = jcr->compress_buf; /* compressed output here */
649 cipher_input = (uint8_t *)jcr->compress_buf; /* encrypt compressed data */
652 * Only change zlib parameters if there is no pending operation.
653 * This should never happen as deflatereset is called after each
657 if (((z_stream*)jcr->pZLIB_compress_workset)->total_in == 0) {
658 /* set gzip compression level - must be done per file */
659 if ((zstat=deflateParams((z_stream*)jcr->pZLIB_compress_workset,
660 ff_pkt->GZIP_level, Z_DEFAULT_STRATEGY)) != Z_OK) {
661 Jmsg(jcr, M_FATAL, 0, _("Compression deflateParams error: %d\n"), zstat);
662 set_jcr_job_status(jcr, JS_ErrorTerminated);
668 const uint32_t max_compress_len = 0;
671 if (ff_pkt->flags & FO_ENCRYPT) {
672 if (ff_pkt->flags & FO_SPARSE) {
673 Jmsg0(jcr, M_FATAL, 0, _("Encrypting sparse data not supported.\n"));
676 /* Allocate the cipher context */
677 if ((cipher_ctx = crypto_cipher_new(jcr->pki_session, true,
678 &cipher_block_size)) == NULL) {
679 /* Shouldn't happen! */
680 Jmsg0(jcr, M_FATAL, 0, _("Failed to initialize encryption context.\n"));
685 * Grow the crypto buffer, if necessary.
686 * crypto_cipher_update() will buffer up to (cipher_block_size - 1).
687 * We grow crypto_buf to the maximum number of blocks that
688 * could be returned for the given read buffer size.
689 * (Using the larger of either rsize or max_compress_len)
691 jcr->crypto_buf = check_pool_memory_size(jcr->crypto_buf,
692 (MAX(rsize + (int)sizeof(uint32_t), (int32_t)max_compress_len) +
693 cipher_block_size - 1) / cipher_block_size * cipher_block_size);
695 wbuf = jcr->crypto_buf; /* Encrypted, possibly compressed output here. */
699 * Send Data header to Storage daemon
700 * <file-index> <stream> <info>
702 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
703 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
707 Dmsg1(300, ">stored: datahdr %s\n", sd->msg);
710 * Make space at beginning of buffer for fileAddr because this
711 * same buffer will be used for writing if compression is off.
713 if (ff_pkt->flags & FO_SPARSE) {
714 rbuf += SPARSE_FADDR_SIZE;
715 rsize -= SPARSE_FADDR_SIZE;
716 #ifdef HAVE_FREEBSD_OS
718 * To read FreeBSD partitions, the read size must be
721 rsize = (rsize/512) * 512;
725 /* a RAW device read on win32 only works if the buffer is a multiple of 512 */
727 if (S_ISBLK(ff_pkt->statp.st_mode))
728 rsize = (rsize/512) * 512;
734 while ((sd->msglen=(uint32_t)bread(&ff_pkt->bfd, rbuf, rsize)) > 0) {
736 /* Check for sparse blocks */
737 if (ff_pkt->flags & FO_SPARSE) {
739 bool haveBlock = true;
740 if (sd->msglen == rsize &&
741 fileAddr+sd->msglen < (uint64_t)ff_pkt->statp.st_size ||
742 ((ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO) &&
743 (uint64_t)ff_pkt->statp.st_size == 0)) {
744 haveBlock = !is_buf_zero(rbuf, rsize);
747 ser_begin(wbuf, SPARSE_FADDR_SIZE);
748 ser_uint64(fileAddr); /* store fileAddr in begin of buffer */
750 fileAddr += sd->msglen; /* update file address */
752 continue; /* skip block of zeros */
756 jcr->ReadBytes += sd->msglen; /* count bytes read */
758 /* Uncompressed cipher input length */
759 cipher_input_len = sd->msglen;
761 /* Update checksum if requested */
763 crypto_digest_update(digest, (uint8_t *)rbuf, sd->msglen);
766 /* Update signing digest if requested */
767 if (signing_digest) {
768 crypto_digest_update(signing_digest, (uint8_t *)rbuf, sd->msglen);
772 /* Do compression if turned on */
773 if (ff_pkt->flags & FO_GZIP && jcr->pZLIB_compress_workset) {
774 Dmsg3(400, "cbuf=0x%x rbuf=0x%x len=%u\n", cbuf, rbuf, sd->msglen);
776 ((z_stream*)jcr->pZLIB_compress_workset)->next_in = (Bytef *)rbuf;
777 ((z_stream*)jcr->pZLIB_compress_workset)->avail_in = sd->msglen;
778 ((z_stream*)jcr->pZLIB_compress_workset)->next_out = (Bytef *)cbuf;
779 ((z_stream*)jcr->pZLIB_compress_workset)->avail_out = max_compress_len;
781 if ((zstat=deflate((z_stream*)jcr->pZLIB_compress_workset, Z_FINISH)) != Z_STREAM_END) {
782 Jmsg(jcr, M_FATAL, 0, _("Compression deflate error: %d\n"), zstat);
783 set_jcr_job_status(jcr, JS_ErrorTerminated);
786 compress_len = ((z_stream*)jcr->pZLIB_compress_workset)->total_out;
787 /* reset zlib stream to be able to begin from scratch again */
788 if ((zstat=deflateReset((z_stream*)jcr->pZLIB_compress_workset)) != Z_OK) {
789 Jmsg(jcr, M_FATAL, 0, _("Compression deflateReset error: %d\n"), zstat);
790 set_jcr_job_status(jcr, JS_ErrorTerminated);
794 Dmsg2(400, "compressed len=%d uncompressed len=%d\n", compress_len,
797 sd->msglen = compress_len; /* set compressed length */
798 cipher_input_len = compress_len;
802 * Note, here we prepend the current record length to the beginning
803 * of the encrypted data. This is because both sparse and compression
804 * restore handling want records returned to them with exactly the
805 * same number of bytes that were processed in the backup handling.
806 * That is, both are block filters rather than a stream. When doing
807 * compression, the compression routines may buffer data, so that for
808 * any one record compressed, when it is decompressed the same size
809 * will not be obtained. Of course, the buffered data eventually comes
810 * out in subsequent crypto_cipher_update() calls or at least
811 * when crypto_cipher_finalize() is called. Unfortunately, this
812 * "feature" of encryption enormously complicates the restore code.
814 if (ff_pkt->flags & FO_ENCRYPT) {
815 uint32_t initial_len = 0;
818 if (ff_pkt->flags & FO_SPARSE) {
819 cipher_input_len += SPARSE_FADDR_SIZE;
822 /* Encrypt the length of the input block */
823 uint8_t packet_len[sizeof(uint32_t)];
825 ser_begin(packet_len, sizeof(uint32_t));
826 ser_uint32(cipher_input_len); /* store data len in begin of buffer */
827 Dmsg1(20, "Encrypt len=%d\n", cipher_input_len);
829 if (!crypto_cipher_update(cipher_ctx, packet_len, sizeof(packet_len),
830 (u_int8_t *)jcr->crypto_buf, &initial_len)) {
831 /* Encryption failed. Shouldn't happen. */
832 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
836 /* Encrypt the input block */
837 if (crypto_cipher_update(cipher_ctx, cipher_input, cipher_input_len,
838 (u_int8_t *)&jcr->crypto_buf[initial_len], &encrypted_len)) {
839 if ((initial_len + encrypted_len) == 0) {
840 /* No full block of data available, read more data */
843 Dmsg2(400, "encrypted len=%d unencrypted len=%d\n", encrypted_len,
845 sd->msglen = initial_len + encrypted_len; /* set encrypted length */
847 /* Encryption failed. Shouldn't happen. */
848 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
853 /* Send the buffer to the Storage daemon */
854 if (ff_pkt->flags & FO_SPARSE) {
855 sd->msglen += SPARSE_FADDR_SIZE; /* include fileAddr in size */
857 sd->msg = wbuf; /* set correct write buffer */
858 if (!bnet_send(sd)) {
859 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
863 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
865 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
866 sd->msg = msgsave; /* restore read buffer */
868 } /* end while read file data */
870 if (sd->msglen < 0) { /* error */
872 Jmsg(jcr, M_ERROR, 0, _("Read error on file %s. ERR=%s\n"),
873 ff_pkt->fname, be.strerror(ff_pkt->bfd.berrno));
874 if (jcr->Errors++ > 1000) { /* insanity check */
875 Jmsg(jcr, M_FATAL, 0, _("Too many errors.\n"));
877 } else if (ff_pkt->flags & FO_ENCRYPT) {
879 * For encryption, we must call finalize to push out any
882 if (!crypto_cipher_finalize(cipher_ctx, (uint8_t *)jcr->crypto_buf,
884 /* Padding failed. Shouldn't happen. */
885 Jmsg(jcr, M_FATAL, 0, _("Encryption padding error\n"));
889 /* Note, on SSL pre-0.9.7, there is always some output */
890 if (encrypted_len > 0) {
891 sd->msglen = encrypted_len; /* set encrypted length */
892 sd->msg = jcr->crypto_buf; /* set correct write buffer */
893 if (!bnet_send(sd)) {
894 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
898 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
899 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
900 sd->msg = msgsave; /* restore bnet buffer */
904 if (!bnet_sig(sd, BNET_EOD)) { /* indicate end of file data */
905 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
910 /* Free the cipher context */
912 crypto_cipher_free(cipher_ctx);
917 /* Free the cipher context */
919 crypto_cipher_free(cipher_ctx);
922 sd->msg = msgsave; /* restore bnet buffer */
928 * Read and send an ACL for the last encountered file.
930 static bool read_and_send_acl(JCR *jcr, int acltype, int stream)
933 BSOCK *sd = jcr->store_bsock;
936 #ifdef FD_NO_SEND_TEST
940 len = bacl_get(jcr, acltype);
942 Jmsg1(jcr, M_WARNING, 0, _("Error reading ACL of %s\n"), jcr->last_fname);
946 return true; /* no ACL */
950 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
951 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
956 /* Send the buffer to the storage deamon */
957 Dmsg2(400, "Backing up ACL type 0x%2x <%s>\n", acltype, jcr->acl_text);
959 sd->msg = jcr->acl_text;
960 sd->msglen = len + 1;
961 if (!bnet_send(sd)) {
964 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
969 jcr->JobBytes += sd->msglen;
971 if (!bnet_sig(sd, BNET_EOD)) {
972 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
977 Dmsg1(200, "ACL of file: %s successfully backed up!\n", jcr->last_fname);
982 static bool encode_and_send_attributes(JCR *jcr, FF_PKT *ff_pkt, int &data_stream)
984 BSOCK *sd = jcr->store_bsock;
985 char attribs[MAXSTRING];
986 char attribsEx[MAXSTRING];
989 #ifdef FD_NO_SEND_TEST
993 /* Find what data stream we will use, then encode the attributes */
994 if ((data_stream = select_data_stream(ff_pkt)) == STREAM_NONE) {
995 /* This should not happen */
996 Jmsg0(jcr, M_FATAL, 0, _("Invalid file flags, no supported data stream type.\n"));
999 encode_stat(attribs, ff_pkt, data_stream);
1001 /* Now possibly extend the attributes */
1002 attr_stream = encode_attribsEx(jcr, attribsEx, ff_pkt);
1004 Dmsg3(300, "File %s\nattribs=%s\nattribsEx=%s\n", ff_pkt->fname, attribs, attribsEx);
1007 jcr->JobFiles++; /* increment number of files sent */
1008 ff_pkt->FileIndex = jcr->JobFiles; /* return FileIndex */
1009 pm_strcpy(jcr->last_fname, ff_pkt->fname);
1013 * Send Attributes header to Storage daemon
1014 * <file-index> <stream> <info>
1016 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, attr_stream)) {
1017 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1021 Dmsg1(300, ">stored: attrhdr %s\n", sd->msg);
1024 * Send file attributes to Storage daemon
1027 * Filename (full path)
1028 * Encoded attributes
1029 * Link name (if type==FT_LNK or FT_LNKSAVED)
1030 * Encoded extended-attributes (for Win32)
1032 * For a directory, link is the same as fname, but with trailing
1033 * slash. For a linked file, link is the link.
1035 if (ff_pkt->type == FT_LNK || ff_pkt->type == FT_LNKSAVED) {
1036 Dmsg2(300, "Link %s to %s\n", ff_pkt->fname, ff_pkt->link);
1037 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%s%c%s%c", jcr->JobFiles,
1038 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, ff_pkt->link, 0,
1040 } else if (ff_pkt->type == FT_DIREND) {
1041 /* Here link is the canonical filename (i.e. with trailing slash) */
1042 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1043 ff_pkt->type, ff_pkt->link, 0, attribs, 0, 0, attribsEx, 0);
1045 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1046 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, 0, attribsEx, 0);
1049 Dmsg2(300, ">stored: attr len=%d: %s\n", sd->msglen, sd->msg);
1051 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1055 bnet_sig(sd, BNET_EOD); /* indicate end of attributes data */