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) 2000-2007 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 occurred 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 occurred 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;
216 DIGEST *digest = NULL;
217 DIGEST *signing_digest = NULL;
218 int digest_stream = STREAM_NONE;
219 SIGNATURE *sig = NULL;
221 bool has_file_data = false;
222 // TODO landonf: Allow the user to specify the digest algorithm
224 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA256;
226 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA1;
228 JCR *jcr = (JCR *)vjcr;
229 BSOCK *sd = jcr->store_bsock;
231 if (job_canceled(jcr)) {
235 jcr->num_files_examined++; /* bump total file count */
237 switch (ff_pkt->type) {
238 case FT_LNKSAVED: /* Hard linked, file already saved */
239 Dmsg2(130, "FT_LNKSAVED hard link: %s => %s\n", ff_pkt->fname, ff_pkt->link);
242 Dmsg1(130, "FT_REGE saving: %s\n", ff_pkt->fname);
243 has_file_data = true;
246 Dmsg1(130, "FT_REG saving: %s\n", ff_pkt->fname);
247 has_file_data = true;
250 Dmsg2(130, "FT_LNK saving: %s -> %s\n", ff_pkt->fname, ff_pkt->link);
253 jcr->num_files_examined--; /* correct file count */
254 return 1; /* not used */
256 Jmsg(jcr, M_INFO, 1, _(" Recursion turned off. Will not descend from %s into %s\n"),
257 ff_pkt->top_fname, ff_pkt->fname);
258 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
261 /* Suppress message for /dev filesystems */
262 if (strncmp(ff_pkt->fname, "/dev/", 5) != 0) {
263 Jmsg(jcr, M_INFO, 1, _(" %s is a different filesystem. Will not descend from %s into %s\n"),
264 ff_pkt->fname, ff_pkt->top_fname, ff_pkt->fname);
266 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
269 Jmsg(jcr, M_INFO, 1, _(" Disallowed filesystem. Will not descend from %s into %s\n"),
270 ff_pkt->top_fname, ff_pkt->fname);
271 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
274 Jmsg(jcr, M_INFO, 1, _(" Disallowed drive type. Will not descend into %s\n"),
278 Dmsg1(130, "FT_DIREND: %s\n", ff_pkt->link);
281 Dmsg1(130, "FT_SPEC saving: %s\n", ff_pkt->fname);
284 Dmsg1(130, "FT_RAW saving: %s\n", ff_pkt->fname);
285 has_file_data = true;
288 Dmsg1(130, "FT_FIFO saving: %s\n", ff_pkt->fname);
292 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not access %s: ERR=%s\n"), ff_pkt->fname,
293 be.strerror(ff_pkt->ff_errno));
299 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not follow link %s: ERR=%s\n"), ff_pkt->fname,
300 be.strerror(ff_pkt->ff_errno));
306 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not stat %s: ERR=%s\n"), ff_pkt->fname,
307 be.strerror(ff_pkt->ff_errno));
313 Jmsg(jcr, M_SKIPPED, 1, _(" Unchanged file skipped: %s\n"), ff_pkt->fname);
316 Jmsg(jcr, M_NOTSAVED, 0, _(" Archive file not saved: %s\n"), ff_pkt->fname);
320 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not open directory %s: ERR=%s\n"), ff_pkt->fname,
321 be.strerror(ff_pkt->ff_errno));
326 Jmsg(jcr, M_NOTSAVED, 0, _(" Unknown file type %d; not saved: %s\n"), ff_pkt->type, ff_pkt->fname);
331 Dmsg1(130, "bfiled: sending %s to stored\n", ff_pkt->fname);
333 /* Digests and encryption are only useful if there's file data */
336 * Setup for digest handling. If this fails, the digest will be set to NULL
339 if (ff_pkt->flags & FO_MD5) {
340 digest = crypto_digest_new(CRYPTO_DIGEST_MD5);
341 digest_stream = STREAM_MD5_DIGEST;
343 } else if (ff_pkt->flags & FO_SHA1) {
344 digest = crypto_digest_new(CRYPTO_DIGEST_SHA1);
345 digest_stream = STREAM_SHA1_DIGEST;
347 } else if (ff_pkt->flags & FO_SHA256) {
348 digest = crypto_digest_new(CRYPTO_DIGEST_SHA256);
349 digest_stream = STREAM_SHA256_DIGEST;
351 } else if (ff_pkt->flags & FO_SHA512) {
352 digest = crypto_digest_new(CRYPTO_DIGEST_SHA512);
353 digest_stream = STREAM_SHA512_DIGEST;
356 /* Did digest initialization fail? */
357 if (digest_stream != STREAM_NONE && digest == NULL) {
358 Jmsg(jcr, M_WARNING, 0, _("%s digest initialization failed\n"),
359 stream_to_ascii(digest_stream));
363 * Set up signature digest handling. If this fails, the signature digest will be set to
366 // TODO landonf: We should really only calculate the digest once, for both verification and signing.
368 signing_digest = crypto_digest_new(signing_algorithm);
370 /* Full-stop if a failure occurred initializing the signature digest */
371 if (signing_digest == NULL) {
372 Jmsg(jcr, M_NOTSAVED, 0, _("%s signature digest initialization failed\n"),
373 stream_to_ascii(signing_algorithm));
379 /* Enable encryption */
380 if (jcr->pki_encrypt) {
381 ff_pkt->flags |= FO_ENCRYPT;
385 /* Initialise the file descriptor we use for data and other streams. */
387 if (ff_pkt->flags & FO_PORTABLE) {
388 set_portable_backup(&ff_pkt->bfd); /* disable Win32 BackupRead() */
390 if (ff_pkt->reader) {
391 if (!set_prog(&ff_pkt->bfd, ff_pkt->reader, jcr)) {
392 Jmsg(jcr, M_FATAL, 0, _("Python reader program \"%s\" not found.\n"),
398 /* Send attributes -- must be done after binit() */
399 if (!encode_and_send_attributes(jcr, ff_pkt, data_stream)) {
404 * Open any file with data that we intend to save, then save it.
406 * Note, if is_win32_backup, we must open the Directory so that
407 * the BackupRead will save its permissions and ownership streams.
409 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
410 ff_pkt->statp.st_size > 0) ||
411 ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO ||
412 (!is_portable_backup(&ff_pkt->bfd) && ff_pkt->type == FT_DIREND)) {
414 if (ff_pkt->type == FT_FIFO) {
415 tid = start_thread_timer(pthread_self(), 60);
419 int noatime = ff_pkt->flags & FO_NOATIME ? O_NOATIME : 0;
420 if (bopen(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY | noatime, 0) < 0) {
421 ff_pkt->ff_errno = errno;
423 Jmsg(jcr, M_NOTSAVED, 0, _(" Cannot open %s: ERR=%s.\n"), ff_pkt->fname,
427 stop_thread_timer(tid);
433 stop_thread_timer(tid);
437 /* Set up the encryption context, send the session data to the SD */
438 if (jcr->pki_encrypt) {
439 /* Send our header */
440 Dmsg2(100, "Send hdr fi=%ld stream=%d\n", jcr->JobFiles, STREAM_ENCRYPTED_SESSION_DATA);
441 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_ENCRYPTED_SESSION_DATA);
443 /* Grow the bsock buffer to fit our message if necessary */
444 if (sizeof_pool_memory(sd->msg) < jcr->pki_session_encoded_size) {
445 sd->msg = realloc_pool_memory(sd->msg, jcr->pki_session_encoded_size);
448 /* Copy our message over and send it */
449 memcpy(sd->msg, jcr->pki_session_encoded, jcr->pki_session_encoded_size);
450 sd->msglen = jcr->pki_session_encoded_size;
451 jcr->JobBytes += sd->msglen;
453 Dmsg1(100, "Send data len=%d\n", sd->msglen);
455 bnet_sig(sd, BNET_EOD);
458 stat = send_data(jcr, data_stream, ff_pkt, digest, signing_digest);
459 bclose(&ff_pkt->bfd);
465 #ifdef HAVE_DARWIN_OS
466 /* Regular files can have resource forks and Finder Info */
467 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
468 ff_pkt->flags & FO_HFSPLUS)) {
469 if (ff_pkt->hfsinfo.rsrclength > 0) {
472 if (!bopen_rsrc(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY, 0) < 0) {
473 ff_pkt->ff_errno = errno;
475 Jmsg(jcr, M_NOTSAVED, -1, _(" Cannot open resource fork for %s: ERR=%s.\n"), ff_pkt->fname,
478 if (is_bopen(&ff_pkt->bfd)) {
479 bclose(&ff_pkt->bfd);
483 flags = ff_pkt->flags;
484 ff_pkt->flags &= ~(FO_GZIP|FO_SPARSE);
485 if (flags & FO_ENCRYPT) {
486 rsrc_stream = STREAM_ENCRYPTED_MACOS_FORK_DATA;
488 rsrc_stream = STREAM_MACOS_FORK_DATA;
490 stat = send_data(jcr, rsrc_stream, ff_pkt, digest, signing_digest);
491 ff_pkt->flags = flags;
492 bclose(&ff_pkt->bfd);
498 Dmsg1(300, "Saving Finder Info for \"%s\"\n", ff_pkt->fname);
499 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_HFSPLUS_ATTRIBUTES);
500 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
501 memcpy(sd->msg, ff_pkt->hfsinfo.fndrinfo, 32);
504 crypto_digest_update(digest, (uint8_t *)sd->msg, sd->msglen);
506 if (signing_digest) {
507 crypto_digest_update(signing_digest, (uint8_t *)sd->msg, sd->msglen);
510 bnet_sig(sd, BNET_EOD);
514 if (ff_pkt->flags & FO_ACL) {
515 /* Read access ACLs for files, dirs and links */
516 if (!read_and_send_acl(jcr, BACL_TYPE_ACCESS, STREAM_UNIX_ATTRIBUTES_ACCESS_ACL)) {
519 /* Directories can have default ACLs too */
520 if (ff_pkt->type == FT_DIREND && (BACL_CAP & BACL_CAP_DEFAULTS_DIR)) {
521 if (!read_and_send_acl(jcr, BACL_TYPE_DEFAULT, STREAM_UNIX_ATTRIBUTES_DEFAULT_ACL)) {
527 /* Terminate the signing digest and send it to the Storage daemon */
528 if (signing_digest) {
531 if ((sig = crypto_sign_new()) == NULL) {
532 Jmsg(jcr, M_FATAL, 0, _("Failed to allocate memory for stream signature.\n"));
536 if (crypto_sign_add_signer(sig, signing_digest, jcr->pki_keypair) == false) {
537 Jmsg(jcr, M_FATAL, 0, _("An error occurred while signing the stream.\n"));
541 /* Get signature size */
542 if (crypto_sign_encode(sig, NULL, &size) == false) {
543 Jmsg(jcr, M_FATAL, 0, _("An error occurred while signing the stream.\n"));
547 /* Allocate signature data buffer */
548 buf = (uint8_t *)malloc(size);
553 /* Encode signature data */
554 if (crypto_sign_encode(sig, buf, &size) == false) {
555 Jmsg(jcr, M_FATAL, 0, _("An error occurred while signing the stream.\n"));
559 /* Send our header */
560 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_SIGNED_DIGEST);
561 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
563 /* Grow the bsock buffer to fit our message if necessary */
564 if (sizeof_pool_memory(sd->msg) < (int32_t)size) {
565 sd->msg = realloc_pool_memory(sd->msg, size);
568 /* Copy our message over and send it */
569 memcpy(sd->msg, buf, size);
572 bnet_sig(sd, BNET_EOD); /* end of checksum */
576 /* Terminate any digest and send it to Storage daemon and the Director */
578 uint8_t md[CRYPTO_DIGEST_MAX_SIZE];
583 if (crypto_digest_finalize(digest, md, &size)) {
584 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, digest_stream);
585 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
586 memcpy(sd->msg, md, size);
589 bnet_sig(sd, BNET_EOD); /* end of checksum */
594 rtnstat = 1; /* good return */
598 crypto_digest_free(digest);
600 if (signing_digest) {
601 crypto_digest_free(signing_digest);
604 crypto_sign_free(sig);
613 * Send data read from an already open file descriptor.
615 * We return 1 on sucess and 0 on errors.
618 * We use ff_pkt->statp.st_size when FO_SPARSE to know when to stop
620 * Currently this is not a problem as the only other stream, resource forks,
621 * are not handled as sparse files.
623 int send_data(JCR *jcr, int stream, FF_PKT *ff_pkt, DIGEST *digest,
624 DIGEST *signing_digest)
626 BSOCK *sd = jcr->store_bsock;
627 uint64_t fileAddr = 0; /* file address */
629 int32_t rsize = jcr->buf_size; /* read buffer size */
631 CIPHER_CONTEXT *cipher_ctx = NULL; /* Quell bogus uninitialized warnings */
632 const uint8_t *cipher_input;
633 uint32_t cipher_input_len;
634 uint32_t cipher_block_size;
635 uint32_t encrypted_len;
636 #ifdef FD_NO_SEND_TEST
641 rbuf = sd->msg; /* read buffer */
642 wbuf = sd->msg; /* write buffer */
643 cipher_input = (uint8_t *)rbuf; /* encrypt uncompressed data */
645 Dmsg1(300, "Saving data, type=%d\n", ff_pkt->type);
648 uLong compress_len = 0;
649 uLong max_compress_len = 0;
650 const Bytef *cbuf = NULL;
653 if (ff_pkt->flags & FO_GZIP) {
654 if (ff_pkt->flags & FO_SPARSE) {
655 cbuf = (Bytef *)jcr->compress_buf + SPARSE_FADDR_SIZE;
656 max_compress_len = jcr->compress_buf_size - SPARSE_FADDR_SIZE;
658 cbuf = (Bytef *)jcr->compress_buf;
659 max_compress_len = jcr->compress_buf_size; /* set max length */
661 wbuf = jcr->compress_buf; /* compressed output here */
662 cipher_input = (uint8_t *)jcr->compress_buf; /* encrypt compressed data */
665 * Only change zlib parameters if there is no pending operation.
666 * This should never happen as deflatereset is called after each
670 if (((z_stream*)jcr->pZLIB_compress_workset)->total_in == 0) {
671 /* set gzip compression level - must be done per file */
672 if ((zstat=deflateParams((z_stream*)jcr->pZLIB_compress_workset,
673 ff_pkt->GZIP_level, Z_DEFAULT_STRATEGY)) != Z_OK) {
674 Jmsg(jcr, M_FATAL, 0, _("Compression deflateParams error: %d\n"), zstat);
675 set_jcr_job_status(jcr, JS_ErrorTerminated);
681 const uint32_t max_compress_len = 0;
684 if (ff_pkt->flags & FO_ENCRYPT) {
685 if (ff_pkt->flags & FO_SPARSE) {
686 Jmsg0(jcr, M_FATAL, 0, _("Encrypting sparse data not supported.\n"));
689 /* Allocate the cipher context */
690 if ((cipher_ctx = crypto_cipher_new(jcr->pki_session, true,
691 &cipher_block_size)) == NULL) {
692 /* Shouldn't happen! */
693 Jmsg0(jcr, M_FATAL, 0, _("Failed to initialize encryption context.\n"));
698 * Grow the crypto buffer, if necessary.
699 * crypto_cipher_update() will buffer up to (cipher_block_size - 1).
700 * We grow crypto_buf to the maximum number of blocks that
701 * could be returned for the given read buffer size.
702 * (Using the larger of either rsize or max_compress_len)
704 jcr->crypto_buf = check_pool_memory_size(jcr->crypto_buf,
705 (MAX(rsize + (int)sizeof(uint32_t), (int32_t)max_compress_len) +
706 cipher_block_size - 1) / cipher_block_size * cipher_block_size);
708 wbuf = jcr->crypto_buf; /* Encrypted, possibly compressed output here. */
712 * Send Data header to Storage daemon
713 * <file-index> <stream> <info>
715 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
716 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
720 Dmsg1(300, ">stored: datahdr %s\n", sd->msg);
723 * Make space at beginning of buffer for fileAddr because this
724 * same buffer will be used for writing if compression is off.
726 if (ff_pkt->flags & FO_SPARSE) {
727 rbuf += SPARSE_FADDR_SIZE;
728 rsize -= SPARSE_FADDR_SIZE;
729 #ifdef HAVE_FREEBSD_OS
731 * To read FreeBSD partitions, the read size must be
734 rsize = (rsize/512) * 512;
738 /* a RAW device read on win32 only works if the buffer is a multiple of 512 */
740 if (S_ISBLK(ff_pkt->statp.st_mode))
741 rsize = (rsize/512) * 512;
747 while ((sd->msglen=(uint32_t)bread(&ff_pkt->bfd, rbuf, rsize)) > 0) {
749 /* Check for sparse blocks */
750 if (ff_pkt->flags & FO_SPARSE) {
752 bool haveBlock = true;
753 if (sd->msglen == rsize &&
754 fileAddr+sd->msglen < (uint64_t)ff_pkt->statp.st_size ||
755 ((ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO) &&
756 (uint64_t)ff_pkt->statp.st_size == 0)) {
757 haveBlock = !is_buf_zero(rbuf, rsize);
760 ser_begin(wbuf, SPARSE_FADDR_SIZE);
761 ser_uint64(fileAddr); /* store fileAddr in begin of buffer */
763 fileAddr += sd->msglen; /* update file address */
765 continue; /* skip block of zeros */
769 jcr->ReadBytes += sd->msglen; /* count bytes read */
771 /* Uncompressed cipher input length */
772 cipher_input_len = sd->msglen;
774 /* Update checksum if requested */
776 crypto_digest_update(digest, (uint8_t *)rbuf, sd->msglen);
779 /* Update signing digest if requested */
780 if (signing_digest) {
781 crypto_digest_update(signing_digest, (uint8_t *)rbuf, sd->msglen);
785 /* Do compression if turned on */
786 if (ff_pkt->flags & FO_GZIP && jcr->pZLIB_compress_workset) {
787 Dmsg3(400, "cbuf=0x%x rbuf=0x%x len=%u\n", cbuf, rbuf, sd->msglen);
789 ((z_stream*)jcr->pZLIB_compress_workset)->next_in = (Bytef *)rbuf;
790 ((z_stream*)jcr->pZLIB_compress_workset)->avail_in = sd->msglen;
791 ((z_stream*)jcr->pZLIB_compress_workset)->next_out = (Bytef *)cbuf;
792 ((z_stream*)jcr->pZLIB_compress_workset)->avail_out = max_compress_len;
794 if ((zstat=deflate((z_stream*)jcr->pZLIB_compress_workset, Z_FINISH)) != Z_STREAM_END) {
795 Jmsg(jcr, M_FATAL, 0, _("Compression deflate error: %d\n"), zstat);
796 set_jcr_job_status(jcr, JS_ErrorTerminated);
799 compress_len = ((z_stream*)jcr->pZLIB_compress_workset)->total_out;
800 /* reset zlib stream to be able to begin from scratch again */
801 if ((zstat=deflateReset((z_stream*)jcr->pZLIB_compress_workset)) != Z_OK) {
802 Jmsg(jcr, M_FATAL, 0, _("Compression deflateReset error: %d\n"), zstat);
803 set_jcr_job_status(jcr, JS_ErrorTerminated);
807 Dmsg2(400, "compressed len=%d uncompressed len=%d\n", compress_len,
810 sd->msglen = compress_len; /* set compressed length */
811 cipher_input_len = compress_len;
815 * Note, here we prepend the current record length to the beginning
816 * of the encrypted data. This is because both sparse and compression
817 * restore handling want records returned to them with exactly the
818 * same number of bytes that were processed in the backup handling.
819 * That is, both are block filters rather than a stream. When doing
820 * compression, the compression routines may buffer data, so that for
821 * any one record compressed, when it is decompressed the same size
822 * will not be obtained. Of course, the buffered data eventually comes
823 * out in subsequent crypto_cipher_update() calls or at least
824 * when crypto_cipher_finalize() is called. Unfortunately, this
825 * "feature" of encryption enormously complicates the restore code.
827 if (ff_pkt->flags & FO_ENCRYPT) {
828 uint32_t initial_len = 0;
831 if (ff_pkt->flags & FO_SPARSE) {
832 cipher_input_len += SPARSE_FADDR_SIZE;
835 /* Encrypt the length of the input block */
836 uint8_t packet_len[sizeof(uint32_t)];
838 ser_begin(packet_len, sizeof(uint32_t));
839 ser_uint32(cipher_input_len); /* store data len in begin of buffer */
840 Dmsg1(20, "Encrypt len=%d\n", cipher_input_len);
842 if (!crypto_cipher_update(cipher_ctx, packet_len, sizeof(packet_len),
843 (u_int8_t *)jcr->crypto_buf, &initial_len)) {
844 /* Encryption failed. Shouldn't happen. */
845 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
849 /* Encrypt the input block */
850 if (crypto_cipher_update(cipher_ctx, cipher_input, cipher_input_len,
851 (u_int8_t *)&jcr->crypto_buf[initial_len], &encrypted_len)) {
852 if ((initial_len + encrypted_len) == 0) {
853 /* No full block of data available, read more data */
856 Dmsg2(400, "encrypted len=%d unencrypted len=%d\n", encrypted_len,
858 sd->msglen = initial_len + encrypted_len; /* set encrypted length */
860 /* Encryption failed. Shouldn't happen. */
861 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
866 /* Send the buffer to the Storage daemon */
867 if (ff_pkt->flags & FO_SPARSE) {
868 sd->msglen += SPARSE_FADDR_SIZE; /* include fileAddr in size */
870 sd->msg = wbuf; /* set correct write buffer */
871 if (!bnet_send(sd)) {
872 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
876 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
878 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
879 sd->msg = msgsave; /* restore read buffer */
881 } /* end while read file data */
883 if (sd->msglen < 0) { /* error */
885 Jmsg(jcr, M_ERROR, 0, _("Read error on file %s. ERR=%s\n"),
886 ff_pkt->fname, be.strerror(ff_pkt->bfd.berrno));
887 if (jcr->Errors++ > 1000) { /* insanity check */
888 Jmsg(jcr, M_FATAL, 0, _("Too many errors.\n"));
890 } else if (ff_pkt->flags & FO_ENCRYPT) {
892 * For encryption, we must call finalize to push out any
895 if (!crypto_cipher_finalize(cipher_ctx, (uint8_t *)jcr->crypto_buf,
897 /* Padding failed. Shouldn't happen. */
898 Jmsg(jcr, M_FATAL, 0, _("Encryption padding error\n"));
902 /* Note, on SSL pre-0.9.7, there is always some output */
903 if (encrypted_len > 0) {
904 sd->msglen = encrypted_len; /* set encrypted length */
905 sd->msg = jcr->crypto_buf; /* set correct write buffer */
906 if (!bnet_send(sd)) {
907 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
911 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
912 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
913 sd->msg = msgsave; /* restore bnet buffer */
917 if (!bnet_sig(sd, BNET_EOD)) { /* indicate end of file data */
918 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
923 /* Free the cipher context */
925 crypto_cipher_free(cipher_ctx);
930 /* Free the cipher context */
932 crypto_cipher_free(cipher_ctx);
935 sd->msg = msgsave; /* restore bnet buffer */
941 * Read and send an ACL for the last encountered file.
943 static bool read_and_send_acl(JCR *jcr, int acltype, int stream)
946 BSOCK *sd = jcr->store_bsock;
949 #ifdef FD_NO_SEND_TEST
953 len = bacl_get(jcr, acltype);
955 Jmsg1(jcr, M_WARNING, 0, _("Error reading ACL of %s\n"), jcr->last_fname);
959 return true; /* no ACL */
963 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
964 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
969 /* Send the buffer to the storage deamon */
970 Dmsg2(400, "Backing up ACL type 0x%2x <%s>\n", acltype, jcr->acl_text);
972 sd->msg = jcr->acl_text;
973 sd->msglen = len + 1;
974 if (!bnet_send(sd)) {
977 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
982 jcr->JobBytes += sd->msglen;
984 if (!bnet_sig(sd, BNET_EOD)) {
985 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
990 Dmsg1(200, "ACL of file: %s successfully backed up!\n", jcr->last_fname);
995 static bool encode_and_send_attributes(JCR *jcr, FF_PKT *ff_pkt, int &data_stream)
997 BSOCK *sd = jcr->store_bsock;
998 char attribs[MAXSTRING];
999 char attribsEx[MAXSTRING];
1002 #ifdef FD_NO_SEND_TEST
1006 /* Find what data stream we will use, then encode the attributes */
1007 if ((data_stream = select_data_stream(ff_pkt)) == STREAM_NONE) {
1008 /* This should not happen */
1009 Jmsg0(jcr, M_FATAL, 0, _("Invalid file flags, no supported data stream type.\n"));
1012 encode_stat(attribs, ff_pkt, data_stream);
1014 /* Now possibly extend the attributes */
1015 attr_stream = encode_attribsEx(jcr, attribsEx, ff_pkt);
1017 Dmsg3(300, "File %s\nattribs=%s\nattribsEx=%s\n", ff_pkt->fname, attribs, attribsEx);
1020 jcr->JobFiles++; /* increment number of files sent */
1021 ff_pkt->FileIndex = jcr->JobFiles; /* return FileIndex */
1022 pm_strcpy(jcr->last_fname, ff_pkt->fname);
1026 * Send Attributes header to Storage daemon
1027 * <file-index> <stream> <info>
1029 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, attr_stream)) {
1030 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1034 Dmsg1(300, ">stored: attrhdr %s\n", sd->msg);
1037 * Send file attributes to Storage daemon
1040 * Filename (full path)
1041 * Encoded attributes
1042 * Link name (if type==FT_LNK or FT_LNKSAVED)
1043 * Encoded extended-attributes (for Win32)
1045 * For a directory, link is the same as fname, but with trailing
1046 * slash. For a linked file, link is the link.
1048 if (ff_pkt->type == FT_LNK || ff_pkt->type == FT_LNKSAVED) {
1049 Dmsg2(300, "Link %s to %s\n", ff_pkt->fname, ff_pkt->link);
1050 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%s%c%s%c", jcr->JobFiles,
1051 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, ff_pkt->link, 0,
1053 } else if (ff_pkt->type == FT_DIREND) {
1054 /* Here link is the canonical filename (i.e. with trailing slash) */
1055 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1056 ff_pkt->type, ff_pkt->link, 0, attribs, 0, 0, attribsEx, 0);
1058 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1059 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, 0, attribsEx, 0);
1062 Dmsg2(300, ">stored: attr len=%d: %s\n", sd->msglen, sd->msg);
1064 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1068 bnet_sig(sd, BNET_EOD); /* indicate end of attributes data */