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;
66 sd = jcr->store_bsock;
68 set_jcr_job_status(jcr, JS_Running);
70 Dmsg1(300, "bfiled: opened data connection %d to stored\n", sd->fd);
73 CLIENT *client = (CLIENT *)GetNextRes(R_CLIENT, NULL);
77 buf_size = client->max_network_buffer_size;
79 buf_size = 0; /* use default */
81 if (!bnet_set_buffer_size(sd, buf_size, BNET_SETBUF_WRITE)) {
82 set_jcr_job_status(jcr, JS_ErrorTerminated);
83 Jmsg(jcr, M_FATAL, 0, _("Cannot set buffer size FD->SD.\n"));
87 jcr->buf_size = sd->msglen;
88 /* Adjust for compression so that output buffer is
89 * 12 bytes + 0.1% larger than input buffer plus 18 bytes.
90 * This gives a bit extra plus room for the sparse addr if any.
91 * Note, we adjust the read size to be smaller so that the
92 * same output buffer can be used without growing it.
94 * The zlib compression workset is initialized here to minimise
95 * the "per file" load. The jcr member is only set, if the init was successful.
97 jcr->compress_buf_size = jcr->buf_size + ((jcr->buf_size+999) / 1000) + 30;
98 jcr->compress_buf = get_memory(jcr->compress_buf_size);
101 z_stream *pZlibStream = (z_stream*)malloc(sizeof(z_stream));
103 pZlibStream->zalloc = Z_NULL;
104 pZlibStream->zfree = Z_NULL;
105 pZlibStream->opaque = Z_NULL;
106 pZlibStream->state = Z_NULL;
108 if (deflateInit(pZlibStream, Z_DEFAULT_COMPRESSION) == Z_OK)
109 jcr->pZLIB_compress_workset = pZlibStream;
115 /* Create encryption session data and a cached, DER-encoded session data
116 * structure. We use a single session key for each backup, so we'll encode
117 * the session data only once. */
118 if (jcr->pki_encrypt) {
121 /* Create per-job session encryption context */
122 jcr->pki_session = crypto_session_new(cipher, jcr->pki_recipients);
124 /* Get the session data size */
125 if (crypto_session_encode(jcr->pki_session, (uint8_t *)0, &size) == false) {
126 Jmsg(jcr, M_FATAL, 0, _("An error occured while encrypting the stream.\n"));
130 /* Allocate buffer */
131 jcr->pki_session_encoded = (uint8_t *)malloc(size);
132 if (!jcr->pki_session_encoded) {
136 /* Encode session data */
137 if (crypto_session_encode(jcr->pki_session, jcr->pki_session_encoded, &size) == false) {
138 Jmsg(jcr, M_FATAL, 0, _("An error occured while encrypting the stream.\n"));
142 /* ... and store the encoded size */
143 jcr->pki_session_encoded_size = size;
145 /* Allocate the encryption/decryption buffer */
146 jcr->crypto_buf = get_memory(CRYPTO_CIPHER_MAX_BLOCK_SIZE);
149 Dmsg1(300, "set_find_options ff=%p\n", jcr->ff);
150 set_find_options((FF_PKT *)jcr->ff, jcr->incremental, jcr->mtime);
151 Dmsg0(300, "start find files\n");
153 start_heartbeat_monitor(jcr);
155 jcr->acl_text = get_pool_memory(PM_MESSAGE);
157 /* Subroutine save_file() is called for each file */
158 if (!find_files(jcr, (FF_PKT *)jcr->ff, save_file, (void *)jcr)) {
159 ok = false; /* error */
160 set_jcr_job_status(jcr, JS_ErrorTerminated);
161 // Jmsg(jcr, M_FATAL, 0, _("Find files error.\n"));
164 free_pool_memory(jcr->acl_text);
166 stop_heartbeat_monitor(jcr);
168 bnet_sig(sd, BNET_EOD); /* end of sending data */
174 if (jcr->compress_buf) {
175 free_pool_memory(jcr->compress_buf);
176 jcr->compress_buf = NULL;
178 if (jcr->pZLIB_compress_workset) {
179 /* Free the zlib stream */
181 deflateEnd((z_stream *)jcr->pZLIB_compress_workset);
183 free (jcr->pZLIB_compress_workset);
184 jcr->pZLIB_compress_workset = NULL;
186 if (jcr->crypto_buf) {
187 free_pool_memory(jcr->crypto_buf);
188 jcr->crypto_buf = NULL;
190 if (jcr->pki_session) {
191 crypto_session_free(jcr->pki_session);
193 if (jcr->pki_session_encoded) {
194 free(jcr->pki_session_encoded);
197 Dmsg1(100, "end blast_data ok=%d\n", ok);
202 * Called here by find() for each file included.
203 * This is a callback. The original is find_files() above.
205 * Send the file and its data to the Storage daemon.
209 * -1 to ignore file/directory (not used here)
211 static int save_file(FF_PKT *ff_pkt, void *vjcr, bool top_level)
213 int stat, data_stream;
214 DIGEST *digest = NULL;
215 DIGEST *signing_digest = NULL;
216 int digest_stream = STREAM_NONE;
217 bool has_file_data = false;
218 // TODO landonf: Allow the user to specify the digest algorithm
220 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA256;
222 crypto_digest_t signing_algorithm = CRYPTO_DIGEST_SHA1;
224 JCR *jcr = (JCR *)vjcr;
225 BSOCK *sd = jcr->store_bsock;
227 if (job_canceled(jcr)) {
231 jcr->num_files_examined++; /* bump total file count */
233 switch (ff_pkt->type) {
234 case FT_LNKSAVED: /* Hard linked, file already saved */
235 Dmsg2(130, "FT_LNKSAVED hard link: %s => %s\n", ff_pkt->fname, ff_pkt->link);
238 Dmsg1(130, "FT_REGE saving: %s\n", ff_pkt->fname);
239 has_file_data = true;
242 Dmsg1(130, "FT_REG saving: %s\n", ff_pkt->fname);
243 has_file_data = true;
246 Dmsg2(130, "FT_LNK saving: %s -> %s\n", ff_pkt->fname, ff_pkt->link);
249 jcr->num_files_examined--; /* correct file count */
250 return 1; /* not used */
252 Jmsg(jcr, M_INFO, 1, _(" Recursion turned off. Will not descend from %s into %s\n"),
253 ff_pkt->top_fname, ff_pkt->fname);
254 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
257 /* Suppress message for /dev filesystems */
258 if (strncmp(ff_pkt->fname, "/dev/", 5) != 0) {
259 Jmsg(jcr, M_INFO, 1, _(" %s is a different filesystem. Will not descend from %s into %s\n"),
260 ff_pkt->fname, ff_pkt->top_fname, ff_pkt->fname);
262 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
265 Jmsg(jcr, M_INFO, 1, _(" Disallowed filesystem. Will not descend from %s into %s\n"),
266 ff_pkt->top_fname, ff_pkt->fname);
267 ff_pkt->type = FT_DIREND; /* Backup only the directory entry */
270 Jmsg(jcr, M_INFO, 1, _(" Disallowed drive type. Will not descend into %s\n"),
274 Dmsg1(130, "FT_DIREND: %s\n", ff_pkt->link);
277 Dmsg1(130, "FT_SPEC saving: %s\n", ff_pkt->fname);
280 Dmsg1(130, "FT_RAW saving: %s\n", ff_pkt->fname);
281 has_file_data = true;
284 Dmsg1(130, "FT_FIFO saving: %s\n", ff_pkt->fname);
288 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not access %s: ERR=%s\n"), ff_pkt->fname,
289 be.strerror(ff_pkt->ff_errno));
295 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not follow link %s: ERR=%s\n"), ff_pkt->fname,
296 be.strerror(ff_pkt->ff_errno));
302 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not stat %s: ERR=%s\n"), ff_pkt->fname,
303 be.strerror(ff_pkt->ff_errno));
309 Jmsg(jcr, M_SKIPPED, 1, _(" Unchanged file skipped: %s\n"), ff_pkt->fname);
312 Jmsg(jcr, M_NOTSAVED, 0, _(" Archive file not saved: %s\n"), ff_pkt->fname);
316 Jmsg(jcr, M_NOTSAVED, 0, _(" Could not open directory %s: ERR=%s\n"), ff_pkt->fname,
317 be.strerror(ff_pkt->ff_errno));
322 Jmsg(jcr, M_NOTSAVED, 0, _(" Unknown file type %d; not saved: %s\n"), ff_pkt->type, ff_pkt->fname);
327 Dmsg1(130, "bfiled: sending %s to stored\n", ff_pkt->fname);
329 /* Digests and encryption are only useful if there's file data */
332 * Setup for digest handling. If this fails, the digest will be set to NULL
335 if (ff_pkt->flags & FO_MD5) {
336 digest = crypto_digest_new(CRYPTO_DIGEST_MD5);
337 digest_stream = STREAM_MD5_DIGEST;
339 } else if (ff_pkt->flags & FO_SHA1) {
340 digest = crypto_digest_new(CRYPTO_DIGEST_SHA1);
341 digest_stream = STREAM_SHA1_DIGEST;
343 } else if (ff_pkt->flags & FO_SHA256) {
344 digest = crypto_digest_new(CRYPTO_DIGEST_SHA256);
345 digest_stream = STREAM_SHA256_DIGEST;
347 } else if (ff_pkt->flags & FO_SHA512) {
348 digest = crypto_digest_new(CRYPTO_DIGEST_SHA512);
349 digest_stream = STREAM_SHA512_DIGEST;
352 /* Did digest initialization fail? */
353 if (digest_stream != STREAM_NONE && digest == NULL) {
354 Jmsg(jcr, M_WARNING, 0, _("%s digest initialization failed\n"),
355 stream_to_ascii(digest_stream));
359 * Set up signature digest handling. If this fails, the signature digest will be set to
362 // TODO landonf: We should really only calculate the digest once, for both verification and signing.
364 signing_digest = crypto_digest_new(signing_algorithm);
366 /* Full-stop if a failure occured initializing the signature digest */
367 if (signing_digest == NULL) {
368 Jmsg(jcr, M_NOTSAVED, 0, _("%s signature digest initialization failed\n"),
369 stream_to_ascii(signing_algorithm));
375 /* Enable encryption */
376 if (jcr->pki_encrypt) {
377 ff_pkt->flags |= FO_ENCRYPT;
381 /* Initialise the file descriptor we use for data and other streams. */
383 if (ff_pkt->flags & FO_PORTABLE) {
384 set_portable_backup(&ff_pkt->bfd); /* disable Win32 BackupRead() */
386 if (ff_pkt->reader) {
387 if (!set_prog(&ff_pkt->bfd, ff_pkt->reader, jcr)) {
388 Jmsg(jcr, M_FATAL, 0, _("Python reader program \"%s\" not found.\n"),
394 /* Send attributes -- must be done after binit() */
395 if (!encode_and_send_attributes(jcr, ff_pkt, data_stream)) {
400 * Open any file with data that we intend to save, then save it.
402 * Note, if is_win32_backup, we must open the Directory so that
403 * the BackupRead will save its permissions and ownership streams.
405 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
406 ff_pkt->statp.st_size > 0) ||
407 ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO ||
408 (!is_portable_backup(&ff_pkt->bfd) && ff_pkt->type == FT_DIREND)) {
410 if (ff_pkt->type == FT_FIFO) {
411 tid = start_thread_timer(pthread_self(), 60);
415 int noatime = ff_pkt->flags & FO_NOATIME ? O_NOATIME : 0;
416 if (bopen(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY | noatime, 0) < 0) {
417 ff_pkt->ff_errno = errno;
419 Jmsg(jcr, M_NOTSAVED, 0, _(" Cannot open %s: ERR=%s.\n"), ff_pkt->fname,
423 stop_thread_timer(tid);
429 stop_thread_timer(tid);
433 /* Set up the encryption context, send the session data to the SD */
434 if (jcr->pki_encrypt) {
435 /* Send our header */
436 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_ENCRYPTED_SESSION_DATA);
438 /* Grow the bsock buffer to fit our message if necessary */
439 if (sizeof_pool_memory(sd->msg) < jcr->pki_session_encoded_size) {
440 sd->msg = realloc_pool_memory(sd->msg, jcr->pki_session_encoded_size);
443 /* Copy our message over and send it */
444 memcpy(sd->msg, jcr->pki_session_encoded, jcr->pki_session_encoded_size);
445 sd->msglen = jcr->pki_session_encoded_size;
446 jcr->JobBytes += sd->msglen;
449 bnet_sig(sd, BNET_EOD);
452 stat = send_data(jcr, data_stream, ff_pkt, digest, signing_digest);
453 bclose(&ff_pkt->bfd);
459 #ifdef HAVE_DARWIN_OS
460 /* Regular files can have resource forks and Finder Info */
461 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
462 ff_pkt->flags & FO_HFSPLUS)) {
463 if (ff_pkt->hfsinfo.rsrclength > 0) {
465 if (!bopen_rsrc(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY, 0) < 0) {
466 ff_pkt->ff_errno = errno;
468 Jmsg(jcr, M_NOTSAVED, -1, _(" Cannot open resource fork for %s: ERR=%s.\n"), ff_pkt->fname,
471 if (is_bopen(&ff_pkt->bfd)) {
472 bclose(&ff_pkt->bfd);
476 flags = ff_pkt->flags;
477 ff_pkt->flags &= ~(FO_GZIP|FO_SPARSE);
478 stat = send_data(jcr, STREAM_MACOS_FORK_DATA, ff_pkt, digest, signing_digest);
479 ff_pkt->flags = flags;
480 bclose(&ff_pkt->bfd);
486 Dmsg1(300, "Saving Finder Info for \"%s\"\n", ff_pkt->fname);
487 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_HFSPLUS_ATTRIBUTES);
488 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
489 memcpy(sd->msg, ff_pkt->hfsinfo.fndrinfo, 32);
492 crypto_digest_update(digest, (uint8_t *)sd->msg, sd->msglen);
494 if (signing_digest) {
495 crypto_digest_update(signing_digest, (uint8_t *)sd->msg, sd->msglen);
498 bnet_sig(sd, BNET_EOD);
502 if (ff_pkt->flags & FO_ACL) {
503 /* Read access ACLs for files, dirs and links */
504 if (!read_and_send_acl(jcr, BACL_TYPE_ACCESS, STREAM_UNIX_ATTRIBUTES_ACCESS_ACL)) {
507 /* Directories can have default ACLs too */
508 if (ff_pkt->type == FT_DIREND && (BACL_CAP & BACL_CAP_DEFAULTS_DIR)) {
509 if (!read_and_send_acl(jcr, BACL_TYPE_DEFAULT, STREAM_UNIX_ATTRIBUTES_DEFAULT_ACL)) {
515 /* Terminate the signing digest and send it to the Storage daemon */
516 if (signing_digest) {
521 if ((sig = crypto_sign_new()) == NULL) {
522 Jmsg(jcr, M_FATAL, 0, _("Failed to allocate memory for stream signature.\n"));
526 if (crypto_sign_add_signer(sig, signing_digest, jcr->pki_keypair) == false) {
527 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
531 /* Get signature size */
532 if (crypto_sign_encode(sig, NULL, &size) == false) {
533 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
537 /* Allocate signature data buffer */
538 buf = (uint8_t *)malloc(size);
540 crypto_sign_free(sig);
544 /* Encode signature data */
545 if (crypto_sign_encode(sig, buf, &size) == false) {
546 Jmsg(jcr, M_FATAL, 0, _("An error occured while signing the stream.\n"));
550 /* Send our header */
551 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_SIGNED_DIGEST);
552 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
554 /* Grow the bsock buffer to fit our message if necessary */
555 if (sizeof_pool_memory(sd->msg) < (int32_t)size) {
556 sd->msg = realloc_pool_memory(sd->msg, size);
559 /* Copy our message over and send it */
560 memcpy(sd->msg, buf, size);
563 bnet_sig(sd, BNET_EOD); /* end of checksum */
565 crypto_digest_free(signing_digest);
566 crypto_sign_free(sig);
570 /* Terminate any digest and send it to Storage daemon and the Director */
572 uint8_t md[CRYPTO_DIGEST_MAX_SIZE];
577 if (crypto_digest_finalize(digest, md, &size)) {
578 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, digest_stream);
579 Dmsg1(300, "bfiled>stored:header %s\n", sd->msg);
580 memcpy(sd->msg, md, size);
583 bnet_sig(sd, BNET_EOD); /* end of checksum */
586 crypto_digest_free(digest);
593 * Send data read from an already open file descriptor.
595 * We return 1 on sucess and 0 on errors.
598 * We use ff_pkt->statp.st_size when FO_SPARSE to know when to stop
600 * Currently this is not a problem as the only other stream, resource forks,
601 * are not handled as sparse files.
603 int send_data(JCR *jcr, int stream, FF_PKT *ff_pkt, DIGEST *digest,
604 DIGEST *signing_digest)
606 BSOCK *sd = jcr->store_bsock;
607 uint64_t fileAddr = 0; /* file address */
609 int32_t rsize = jcr->buf_size; /* read buffer size */
611 CIPHER_CONTEXT *cipher_ctx = NULL; /* Quell bogus uninitialized warnings */
612 const uint8_t *cipher_input;
613 uint32_t cipher_input_len;
614 uint32_t cipher_block_size;
615 uint32_t encrypted_len;
616 #ifdef FD_NO_SEND_TEST
621 rbuf = sd->msg; /* read buffer */
622 wbuf = sd->msg; /* write buffer */
623 cipher_input = (uint8_t *)rbuf; /* encrypt uncompressed data */
625 Dmsg1(300, "Saving data, type=%d\n", ff_pkt->type);
628 uLong compress_len = 0;
629 uLong max_compress_len = 0;
630 const Bytef *cbuf = NULL;
633 if (ff_pkt->flags & FO_GZIP) {
634 if (ff_pkt->flags & FO_SPARSE) {
635 cbuf = (Bytef *)jcr->compress_buf + SPARSE_FADDR_SIZE;
636 max_compress_len = jcr->compress_buf_size - SPARSE_FADDR_SIZE;
638 cbuf = (Bytef *)jcr->compress_buf;
639 max_compress_len = jcr->compress_buf_size; /* set max length */
641 wbuf = jcr->compress_buf; /* compressed output here */
642 cipher_input = (uint8_t *)jcr->compress_buf; /* encrypt compressed data */
645 * Only change zlib parameters if there is no pending operation.
646 * This should never happen as deflatereset is called after each
650 if (((z_stream*)jcr->pZLIB_compress_workset)->total_in == 0) {
651 /* set gzip compression level - must be done per file */
652 if ((zstat=deflateParams((z_stream*)jcr->pZLIB_compress_workset,
653 ff_pkt->GZIP_level, Z_DEFAULT_STRATEGY)) != Z_OK) {
654 Jmsg(jcr, M_FATAL, 0, _("Compression deflateParams error: %d\n"), zstat);
655 set_jcr_job_status(jcr, JS_ErrorTerminated);
661 const uint32_t max_compress_len = 0;
664 if (ff_pkt->flags & FO_ENCRYPT) {
665 if (ff_pkt->flags & FO_SPARSE) {
666 Jmsg0(jcr, M_FATAL, 0, _("Encrypting sparse data not supported.\n"));
669 /* Allocate the cipher context */
670 if ((cipher_ctx = crypto_cipher_new(jcr->pki_session, true,
671 &cipher_block_size)) == NULL) {
672 /* Shouldn't happen! */
673 Jmsg0(jcr, M_FATAL, 0, _("Failed to initialize encryption context.\n"));
678 * Grow the crypto buffer, if necessary.
679 * crypto_cipher_update() will buffer up to (cipher_block_size - 1).
680 * We grow crypto_buf to the maximum number of blocks that
681 * could be returned for the given read buffer size.
682 * (Using the larger of either rsize or max_compress_len)
684 jcr->crypto_buf = check_pool_memory_size(jcr->crypto_buf,
685 (MAX(rsize + (int)sizeof(uint32_t), (int32_t)max_compress_len) +
686 cipher_block_size - 1) / cipher_block_size * cipher_block_size);
688 wbuf = jcr->crypto_buf; /* Encrypted, possibly compressed output here. */
692 * Send Data header to Storage daemon
693 * <file-index> <stream> <info>
695 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
696 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
700 Dmsg1(300, ">stored: datahdr %s\n", sd->msg);
703 * Make space at beginning of buffer for fileAddr because this
704 * same buffer will be used for writing if compression is off.
706 if (ff_pkt->flags & FO_SPARSE) {
707 rbuf += SPARSE_FADDR_SIZE;
708 rsize -= SPARSE_FADDR_SIZE;
709 #ifdef HAVE_FREEBSD_OS
711 * To read FreeBSD partitions, the read size must be
714 rsize = (rsize/512) * 512;
718 /* a RAW device read on win32 only works if the buffer is a multiple of 512 */
720 if (S_ISBLK(ff_pkt->statp.st_mode))
721 rsize = (rsize/512) * 512;
727 while ((sd->msglen=(uint32_t)bread(&ff_pkt->bfd, rbuf, rsize)) > 0) {
729 /* Check for sparse blocks */
730 if (ff_pkt->flags & FO_SPARSE) {
732 bool haveBlock = true;
733 if (sd->msglen == rsize &&
734 fileAddr+sd->msglen < (uint64_t)ff_pkt->statp.st_size ||
735 ((ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO) &&
736 (uint64_t)ff_pkt->statp.st_size == 0)) {
737 haveBlock = !is_buf_zero(rbuf, rsize);
740 ser_begin(wbuf, SPARSE_FADDR_SIZE);
741 ser_uint64(fileAddr); /* store fileAddr in begin of buffer */
743 fileAddr += sd->msglen; /* update file address */
745 continue; /* skip block of zeros */
749 jcr->ReadBytes += sd->msglen; /* count bytes read */
751 /* Uncompressed cipher input length */
752 cipher_input_len = sd->msglen;
754 /* Update checksum if requested */
756 crypto_digest_update(digest, (uint8_t *)rbuf, sd->msglen);
759 /* Update signing digest if requested */
760 if (signing_digest) {
761 crypto_digest_update(signing_digest, (uint8_t *)rbuf, sd->msglen);
765 /* Do compression if turned on */
766 if (ff_pkt->flags & FO_GZIP && jcr->pZLIB_compress_workset) {
767 Dmsg3(400, "cbuf=0x%x rbuf=0x%x len=%u\n", cbuf, rbuf, sd->msglen);
769 ((z_stream*)jcr->pZLIB_compress_workset)->next_in = (Bytef *)rbuf;
770 ((z_stream*)jcr->pZLIB_compress_workset)->avail_in = sd->msglen;
771 ((z_stream*)jcr->pZLIB_compress_workset)->next_out = (Bytef *)cbuf;
772 ((z_stream*)jcr->pZLIB_compress_workset)->avail_out = max_compress_len;
774 if ((zstat=deflate((z_stream*)jcr->pZLIB_compress_workset, Z_FINISH)) != Z_STREAM_END) {
775 Jmsg(jcr, M_FATAL, 0, _("Compression deflate error: %d\n"), zstat);
776 set_jcr_job_status(jcr, JS_ErrorTerminated);
779 compress_len = ((z_stream*)jcr->pZLIB_compress_workset)->total_out;
780 /* reset zlib stream to be able to begin from scratch again */
781 if ((zstat=deflateReset((z_stream*)jcr->pZLIB_compress_workset)) != Z_OK) {
782 Jmsg(jcr, M_FATAL, 0, _("Compression deflateReset error: %d\n"), zstat);
783 set_jcr_job_status(jcr, JS_ErrorTerminated);
787 Dmsg2(400, "compressed len=%d uncompressed len=%d\n", compress_len,
790 sd->msglen = compress_len; /* set compressed length */
791 cipher_input_len = compress_len;
795 * Note, here we prepend the current record length to the beginning
796 * of the encrypted data. This is because both sparse and compression
797 * restore handling want records returned to them with exactly the
798 * same number of bytes that were processed in the backup handling.
799 * That is, both are block filters rather than a stream. When doing
800 * compression, the compression routines may buffer data, so that for
801 * any one record compressed, when it is decompressed the same size
802 * will not be obtained. Of course, the buffered data eventually comes
803 * out in subsequent crypto_cipher_update() calls or at least
804 * when crypto_cipher_finalize() is called. Unfortunately, this
805 * "feature" of encryption enormously complicates the restore code.
807 if (ff_pkt->flags & FO_ENCRYPT) {
808 uint32_t initial_len = 0;
811 if (ff_pkt->flags & FO_SPARSE) {
812 cipher_input_len += SPARSE_FADDR_SIZE;
815 /* Encrypt the length of the input block */
816 uint8_t packet_len[sizeof(uint32_t)];
818 ser_begin(packet_len, sizeof(uint32_t));
819 ser_uint32(cipher_input_len); /* store data len in begin of buffer */
820 Dmsg1(20, "Encrypt len=%d\n", cipher_input_len);
822 if (!crypto_cipher_update(cipher_ctx, packet_len, sizeof(packet_len),
823 (u_int8_t *)jcr->crypto_buf, &initial_len)) {
824 /* Encryption failed. Shouldn't happen. */
825 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
829 /* Encrypt the input block */
830 if (crypto_cipher_update(cipher_ctx, cipher_input, cipher_input_len,
831 (u_int8_t *)&jcr->crypto_buf[initial_len], &encrypted_len)) {
832 if ((initial_len + encrypted_len) == 0) {
833 /* No full block of data available, read more data */
836 Dmsg2(400, "encrypted len=%d unencrypted len=%d\n", encrypted_len,
838 sd->msglen = initial_len + encrypted_len; /* set encrypted length */
840 /* Encryption failed. Shouldn't happen. */
841 Jmsg(jcr, M_FATAL, 0, _("Encryption error\n"));
846 /* Send the buffer to the Storage daemon */
847 if (ff_pkt->flags & FO_SPARSE) {
848 sd->msglen += SPARSE_FADDR_SIZE; /* include fileAddr in size */
850 sd->msg = wbuf; /* set correct write buffer */
851 if (!bnet_send(sd)) {
852 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
856 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
858 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
859 sd->msg = msgsave; /* restore read buffer */
861 } /* end while read file data */
863 if (sd->msglen < 0) { /* error */
865 Jmsg(jcr, M_ERROR, 0, _("Read error on file %s. ERR=%s\n"),
866 ff_pkt->fname, be.strerror(ff_pkt->bfd.berrno));
867 if (jcr->Errors++ > 1000) { /* insanity check */
868 Jmsg(jcr, M_FATAL, 0, _("Too many errors.\n"));
870 } else if (ff_pkt->flags & FO_ENCRYPT) {
872 * For encryption, we must call finalize to push out any
875 if (!crypto_cipher_finalize(cipher_ctx, (uint8_t *)jcr->crypto_buf,
877 /* Padding failed. Shouldn't happen. */
878 Jmsg(jcr, M_FATAL, 0, _("Encryption padding error\n"));
882 /* Note, on SSL pre-0.9.7, there is always some output */
883 if (encrypted_len > 0) {
884 sd->msglen = encrypted_len; /* set encrypted length */
885 sd->msg = jcr->crypto_buf; /* set correct write buffer */
886 if (!bnet_send(sd)) {
887 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
891 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
892 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed/encrypted */
893 sd->msg = msgsave; /* restore bnet buffer */
897 if (!bnet_sig(sd, BNET_EOD)) { /* indicate end of file data */
898 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
903 /* Free the cipher context */
905 crypto_cipher_free(cipher_ctx);
910 /* Free the cipher context */
912 crypto_cipher_free(cipher_ctx);
915 sd->msg = msgsave; /* restore bnet buffer */
921 * Read and send an ACL for the last encountered file.
923 static bool read_and_send_acl(JCR *jcr, int acltype, int stream)
926 BSOCK *sd = jcr->store_bsock;
929 #ifdef FD_NO_SEND_TEST
933 len = bacl_get(jcr, acltype);
935 Jmsg1(jcr, M_WARNING, 0, _("Error reading ACL of %s\n"), jcr->last_fname);
939 return true; /* no ACL */
943 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, stream)) {
944 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
949 /* Send the buffer to the storage deamon */
950 Dmsg2(400, "Backing up ACL type 0x%2x <%s>\n", acltype, jcr->acl_text);
952 sd->msg = jcr->acl_text;
953 sd->msglen = len + 1;
954 if (!bnet_send(sd)) {
957 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
962 jcr->JobBytes += sd->msglen;
964 if (!bnet_sig(sd, BNET_EOD)) {
965 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
970 Dmsg1(200, "ACL of file: %s successfully backed up!\n", jcr->last_fname);
975 static bool encode_and_send_attributes(JCR *jcr, FF_PKT *ff_pkt, int &data_stream)
977 BSOCK *sd = jcr->store_bsock;
978 char attribs[MAXSTRING];
979 char attribsEx[MAXSTRING];
982 #ifdef FD_NO_SEND_TEST
986 /* Find what data stream we will use, then encode the attributes */
987 if ((data_stream = select_data_stream(ff_pkt)) == STREAM_NONE) {
988 /* This should not happen */
989 Jmsg0(jcr, M_FATAL, 0, _("Invalid file flags, no supported data stream type.\n"));
992 encode_stat(attribs, ff_pkt, data_stream);
994 /* Now possibly extend the attributes */
995 attr_stream = encode_attribsEx(jcr, attribsEx, ff_pkt);
997 Dmsg3(300, "File %s\nattribs=%s\nattribsEx=%s\n", ff_pkt->fname, attribs, attribsEx);
1000 jcr->JobFiles++; /* increment number of files sent */
1001 ff_pkt->FileIndex = jcr->JobFiles; /* return FileIndex */
1002 pm_strcpy(jcr->last_fname, ff_pkt->fname);
1006 * Send Attributes header to Storage daemon
1007 * <file-index> <stream> <info>
1009 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, attr_stream)) {
1010 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1014 Dmsg1(300, ">stored: attrhdr %s\n", sd->msg);
1017 * Send file attributes to Storage daemon
1020 * Filename (full path)
1021 * Encoded attributes
1022 * Link name (if type==FT_LNK or FT_LNKSAVED)
1023 * Encoded extended-attributes (for Win32)
1025 * For a directory, link is the same as fname, but with trailing
1026 * slash. For a linked file, link is the link.
1028 if (ff_pkt->type == FT_LNK || ff_pkt->type == FT_LNKSAVED) {
1029 Dmsg2(300, "Link %s to %s\n", ff_pkt->fname, ff_pkt->link);
1030 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%s%c%s%c", jcr->JobFiles,
1031 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, ff_pkt->link, 0,
1033 } else if (ff_pkt->type == FT_DIREND) {
1034 /* Here link is the canonical filename (i.e. with trailing slash) */
1035 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1036 ff_pkt->type, ff_pkt->link, 0, attribs, 0, 0, attribsEx, 0);
1038 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
1039 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, 0, attribsEx, 0);
1042 Dmsg2(300, ">stored: attr len=%d: %s\n", sd->msglen, sd->msg);
1044 Jmsg1(jcr, M_FATAL, 0, _("Network send error to SD. ERR=%s\n"),
1048 bnet_sig(sd, BNET_EOD); /* indicate end of attributes data */