2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation plus additions
11 that are listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Bacula File Daemon restore.c Restorefiles.
31 * Kern Sibbald, November MM
44 #if defined(HAVE_CRYPTO)
45 const bool have_crypto = true;
47 const bool have_crypto = false;
50 /* Data received from Storage Daemon */
51 static char rec_header[] = "rechdr %ld %ld %ld %ld %ld";
53 /* Forward referenced functions */
54 #if defined(HAVE_LIBZ)
55 static const char *zlib_strerror(int stat);
56 const bool have_libz = true;
58 const bool have_libz = false;
61 typedef struct restore_cipher_ctx {
62 CIPHER_CONTEXT *cipher;
65 POOLMEM *buf; /* Pointer to descryption buffer */
66 int32_t buf_len; /* Count of bytes currently in buf */
67 int32_t packet_len; /* Total bytes in packet */
70 int verify_signature(JCR *jcr, SIGNATURE *sig);
71 int32_t extract_data(JCR *jcr, BFILE *bfd, POOLMEM *buf, int32_t buflen,
72 uint64_t *addr, int flags, RESTORE_CIPHER_CTX *cipher_ctx);
73 bool flush_cipher(JCR *jcr, BFILE *bfd, uint64_t *addr, int flags, RESTORE_CIPHER_CTX *cipher_ctx);
75 #define RETRY 10 /* retry wait time */
78 * Close a bfd check that we are at the expected file offset.
79 * Makes some code in set_attributes().
81 int bclose_chksize(JCR *jcr, BFILE *bfd, boffset_t osize)
83 char ec1[50], ec2[50];
86 fsize = blseek(bfd, 0, SEEK_CUR);
87 bclose(bfd); /* first close file */
88 if (fsize > 0 && fsize != osize) {
89 Qmsg3(jcr, M_ERROR, 0, _("Size of data or stream of %s not correct. Original %s, restored %s.\n"),
90 jcr->last_fname, edit_uint64(osize, ec1),
91 edit_uint64(fsize, ec2));
98 * Restore the requested files.
101 void do_restore(JCR *jcr)
106 uint32_t VolSessionId, VolSessionTime;
107 bool extract = false;
109 char ec1[50]; /* Buffer printing huge values */
110 BFILE bfd; /* File content */
111 uint64_t fileAddr = 0; /* file write address */
112 uint32_t size; /* Size of file */
113 BFILE altbfd; /* Alternative data stream */
114 uint64_t alt_addr = 0; /* Write address for alternative stream */
115 intmax_t alt_size = 0; /* Size of alternate stream */
116 SIGNATURE *sig = NULL; /* Cryptographic signature (if any) for file */
117 CRYPTO_SESSION *cs = NULL; /* Cryptographic session data (if any) for file */
118 RESTORE_CIPHER_CTX cipher_ctx; /* Cryptographic restore context (if any) for file */
119 RESTORE_CIPHER_CTX alt_cipher_ctx; /* Cryptographic restore context (if any) for alternative stream */
120 int flags = 0; /* Options for extract_data() */
121 int alt_flags = 0; /* Options for extract_data() */
125 /* The following variables keep track of "known unknowns" */
126 int non_support_data = 0;
127 int non_support_attr = 0;
128 int non_support_rsrc = 0;
129 int non_support_finfo = 0;
130 int non_support_acl = 0;
131 int non_support_progname = 0;
133 /* Finally, set up for special configurations */
134 #ifdef HAVE_DARWIN_OS
135 intmax_t rsrc_len = 0; /* Original length of resource fork */
136 struct attrlist attrList;
138 memset(&attrList, 0, sizeof(attrList));
139 attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
140 attrList.commonattr = ATTR_CMN_FNDRINFO;
143 sd = jcr->store_bsock;
144 set_jcr_job_status(jcr, JS_Running);
147 CLIENT *client = (CLIENT *)GetNextRes(R_CLIENT, NULL);
151 buf_size = client->max_network_buffer_size;
153 buf_size = 0; /* use default */
155 if (!bnet_set_buffer_size(sd, buf_size, BNET_SETBUF_WRITE)) {
156 set_jcr_job_status(jcr, JS_ErrorTerminated);
159 jcr->buf_size = sd->msglen;
161 #ifdef stbernard_implemented
162 / #if defined(HAVE_WIN32)
163 bool bResumeOfmOnExit = FALSE;
164 if (isOpenFileManagerRunning()) {
165 if ( pauseOpenFileManager() ) {
166 Jmsg(jcr, M_INFO, 0, _("Open File Manager paused\n") );
167 bResumeOfmOnExit = TRUE;
170 Jmsg(jcr, M_ERROR, 0, _("FAILED to pause Open File Manager\n") );
174 char username[UNLEN+1];
175 DWORD usize = sizeof(username);
176 int privs = enable_backup_privileges(NULL, 1);
177 if (GetUserName(username, &usize)) {
178 Jmsg2(jcr, M_INFO, 0, _("Running as '%s'. Privmask=%#08x\n"), username,
180 Jmsg(jcr, M_WARNING, 0, _("Failed to retrieve current UserName\n"));
186 uint32_t compress_buf_size = jcr->buf_size + 12 + ((jcr->buf_size+999) / 1000) + 100;
187 jcr->compress_buf = (char *)bmalloc(compress_buf_size);
188 jcr->compress_buf_size = compress_buf_size;
191 cipher_ctx.cipher = NULL;
192 alt_cipher_ctx.cipher = NULL;
194 cipher_ctx.buf = get_memory(CRYPTO_CIPHER_MAX_BLOCK_SIZE);
195 cipher_ctx.buf_len = 0;
196 cipher_ctx.packet_len = 0;
198 alt_cipher_ctx.buf = get_memory(CRYPTO_CIPHER_MAX_BLOCK_SIZE);
199 alt_cipher_ctx.buf_len = 0;
200 alt_cipher_ctx.packet_len = 0;
202 cipher_ctx.buf = NULL;
203 alt_cipher_ctx.buf = NULL;
207 * Get a record from the Storage daemon. We are guaranteed to
208 * receive records in the following order:
209 * 1. Stream record header
211 * a. Attributes (Unix or Win32)
212 * b. Possibly stream encryption session data (e.g., symmetric session key)
213 * or c. File data for the file
214 * or d. Alternate data stream (e.g. Resource Fork)
217 * or g. Possibly a cryptographic signature
218 * or h. Possibly MD5 or SHA1 record
221 * NOTE: We keep track of two bacula file descriptors:
222 * 1. bfd for file data.
223 * This fd is opened for non empty files when an attribute stream is
224 * encountered and closed when we find the next attribute stream.
225 * 2. alt_bfd for alternate data streams
226 * This fd is opened every time we encounter a new alternate data
227 * stream for the current file. When we find any other stream, we
229 * The expected size of the stream, alt_len, should be set when
235 jcr->acl_text = get_pool_memory(PM_MESSAGE);
237 while (bget_msg(sd) >= 0 && !job_canceled(jcr)) {
238 /* Remember previous stream type */
239 prev_stream = stream;
241 /* First we expect a Stream Record Header */
242 if (sscanf(sd->msg, rec_header, &VolSessionId, &VolSessionTime, &file_index,
243 &stream, &size) != 5) {
244 Jmsg1(jcr, M_FATAL, 0, _("Record header scan error: %s\n"), sd->msg);
247 Dmsg4(30, "Got hdr: Files=%d FilInx=%d Stream=%d, %s.\n",
248 jcr->JobFiles, file_index, stream, stream_to_ascii(stream));
250 /* * Now we expect the Stream Data */
251 if (bget_msg(sd) < 0) {
252 Jmsg1(jcr, M_FATAL, 0, _("Data record error. ERR=%s\n"), bnet_strerror(sd));
255 if (size != (uint32_t)sd->msglen) {
256 Jmsg2(jcr, M_FATAL, 0, _("Actual data size %d not same as header %d\n"), sd->msglen, size);
259 Dmsg3(30, "Got stream: %s len=%d extract=%d\n", stream_to_ascii(stream),
260 sd->msglen, extract);
262 /* If we change streams, close and reset alternate data streams */
263 if (prev_stream != stream) {
264 if (is_bopen(&altbfd)) {
265 if (alt_cipher_ctx.cipher) {
266 flush_cipher(jcr, &altbfd, &alt_addr, alt_flags, &alt_cipher_ctx);
267 crypto_cipher_free(alt_cipher_ctx.cipher);
268 alt_cipher_ctx.cipher = NULL;
270 bclose_chksize(jcr, &altbfd, alt_size);
272 alt_size = -1; /* Use an impossible value and set a proper one below */
276 /* File Attributes stream */
278 case STREAM_UNIX_ATTRIBUTES:
279 case STREAM_UNIX_ATTRIBUTES_EX:
281 * If extracting, it was from previous stream, so
282 * close the output file and validate the signature.
285 if (size > 0 && !is_bopen(&bfd)) {
286 Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should be open\n"));
288 /* Flush and deallocate previous stream's cipher context */
289 if (cipher_ctx.cipher && prev_stream != STREAM_ENCRYPTED_SESSION_DATA) {
290 flush_cipher(jcr, &bfd, &fileAddr, flags, &cipher_ctx);
291 crypto_cipher_free(cipher_ctx.cipher);
292 cipher_ctx.cipher = NULL;
295 /* Flush and deallocate previous stream's alt cipher context */
296 if (alt_cipher_ctx.cipher && prev_stream != STREAM_ENCRYPTED_SESSION_DATA) {
297 flush_cipher(jcr, &altbfd, &alt_addr, alt_flags, &alt_cipher_ctx);
298 crypto_cipher_free(alt_cipher_ctx.cipher);
299 alt_cipher_ctx.cipher = NULL;
301 set_attributes(jcr, attr, &bfd);
304 /* Verify the cryptographic signature, if any */
307 // Failure is reported in verify_signature() ...
308 verify_signature(jcr, sig);
310 Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
315 crypto_sign_free(sig);
319 crypto_session_free(cs);
323 Dmsg0(30, "Stop extracting.\n");
324 } else if (is_bopen(&bfd)) {
325 Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should not be open\n"));
330 * Unpack and do sanity check fo attributes.
332 if (!unpack_attributes_record(jcr, stream, sd->msg, attr)) {
335 if (file_index != attr->file_index) {
336 Jmsg(jcr, M_FATAL, 0, _("Record header file index %ld not equal record index %ld\n"),
337 file_index, attr->file_index);
338 Dmsg0(100, "File index error\n");
342 Dmsg3(200, "File %s\nattrib=%s\nattribsEx=%s\n", attr->fname,
343 attr->attr, attr->attrEx);
345 attr->data_stream = decode_stat(attr->attr, &attr->statp, &attr->LinkFI);
347 if (!is_restore_stream_supported(attr->data_stream)) {
348 if (!non_support_data++) {
349 Jmsg(jcr, M_ERROR, 0, _("%s stream not supported on this Client.\n"),
350 stream_to_ascii(attr->data_stream));
355 build_attr_output_fnames(jcr, attr);
358 * Now determine if we are extracting or not.
360 jcr->num_files_examined++;
362 stat = create_file(jcr, attr, &bfd, jcr->replace);
363 Dmsg2(30, "Outfile=%s create_file stat=%d\n", attr->ofname, stat);
368 case CF_EXTRACT: /* File created and we expect file data */
371 case CF_CREATED: /* File created, but there is no content */
373 pm_strcpy(jcr->last_fname, attr->ofname);
374 jcr->last_type = attr->type;
378 print_ls_output(jcr, attr);
380 #ifdef HAVE_DARWIN_OS
381 /* Only restore the resource fork for regular files */
382 from_base64(&rsrc_len, attr->attrEx);
383 if (attr->type == FT_REG && rsrc_len > 0) {
388 /* set attributes now because file will not be extracted */
389 set_attributes(jcr, attr, &bfd);
396 case STREAM_ENCRYPTED_SESSION_DATA:
397 crypto_error_t cryptoerr;
399 /* Is this an unexpected session data entry? */
401 Jmsg0(jcr, M_ERROR, 0, _("Unexpected cryptographic session data stream.\n"));
407 /* Do we have any keys at all? */
408 if (!jcr->pki_recipients) {
409 Jmsg(jcr, M_ERROR, 0, _("No private decryption keys have been defined to decrypt encrypted backup data.\n"));
415 /* Decode and save session keys. */
416 cryptoerr = crypto_session_decode((uint8_t *)sd->msg, (uint32_t)sd->msglen, jcr->pki_recipients, &cs);
418 case CRYPTO_ERROR_NONE:
421 case CRYPTO_ERROR_NORECIPIENT:
422 Jmsg(jcr, M_ERROR, 0, _("Missing private key required to decrypt encrypted backup data.\n"));
424 case CRYPTO_ERROR_DECRYPTION:
425 Jmsg(jcr, M_ERROR, 0, _("Decrypt of the session key failed.\n"));
428 /* Shouldn't happen */
429 Jmsg1(jcr, M_ERROR, 0, _("An error occurred while decoding encrypted session data stream: %s\n"), crypto_strerror(cryptoerr));
433 if (cryptoerr != CRYPTO_ERROR_NONE) {
439 /* Set up a decryption context */
440 if ((cipher_ctx.cipher = crypto_cipher_new(cs, false, &cipher_ctx.block_size)) == NULL) {
441 Jmsg1(jcr, M_ERROR, 0, _("Failed to initialize decryption context for %s\n"), jcr->last_fname);
442 crypto_session_free(cs);
451 case STREAM_FILE_DATA:
452 case STREAM_SPARSE_DATA:
453 case STREAM_WIN32_DATA:
454 case STREAM_GZIP_DATA:
455 case STREAM_SPARSE_GZIP_DATA:
456 case STREAM_WIN32_GZIP_DATA:
457 case STREAM_ENCRYPTED_FILE_DATA:
458 case STREAM_ENCRYPTED_WIN32_DATA:
459 case STREAM_ENCRYPTED_FILE_GZIP_DATA:
460 case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
461 /* Force an expected, consistent stream type here */
462 if (extract && (prev_stream == stream || prev_stream == STREAM_UNIX_ATTRIBUTES
463 || prev_stream == STREAM_UNIX_ATTRIBUTES_EX
464 || prev_stream == STREAM_ENCRYPTED_SESSION_DATA)) {
467 if (stream == STREAM_SPARSE_DATA || stream == STREAM_SPARSE_GZIP_DATA) {
471 if (stream == STREAM_GZIP_DATA || stream == STREAM_SPARSE_GZIP_DATA
472 || stream == STREAM_WIN32_GZIP_DATA || stream == STREAM_ENCRYPTED_FILE_GZIP_DATA
473 || stream == STREAM_ENCRYPTED_WIN32_GZIP_DATA) {
477 if (stream == STREAM_ENCRYPTED_FILE_DATA
478 || stream == STREAM_ENCRYPTED_FILE_GZIP_DATA
479 || stream == STREAM_ENCRYPTED_WIN32_DATA
480 || stream == STREAM_ENCRYPTED_WIN32_GZIP_DATA) {
481 if (!cipher_ctx.cipher) {
482 Jmsg1(jcr, M_ERROR, 0, _("Missing encryption session data stream for %s\n"), jcr->last_fname);
490 if (is_win32_stream(stream) && !have_win32_api()) {
491 set_portable_backup(&bfd);
492 flags |= FO_WIN32DECOMP; /* "decompose" BackupWrite data */
495 if (extract_data(jcr, &bfd, sd->msg, sd->msglen, &fileAddr, flags,
504 /* Resource fork stream - only recorded after a file to be restored */
505 /* Silently ignore if we cannot write - we already reported that */
506 case STREAM_ENCRYPTED_MACOS_FORK_DATA:
507 case STREAM_MACOS_FORK_DATA:
508 #ifdef HAVE_DARWIN_OS
510 jcr->ff->flags |= FO_HFSPLUS;
512 if (stream == STREAM_ENCRYPTED_MACOS_FORK_DATA) {
513 alt_flags |= FO_ENCRYPT;
515 /* Set up a decryption context */
516 if (extract && !alt_cipher_ctx.cipher) {
518 Jmsg1(jcr, M_ERROR, 0, _("Missing encryption session data stream for %s\n"), jcr->last_fname);
524 if ((alt_cipher_ctx.cipher = crypto_cipher_new(cs, false, &alt_cipher_ctx.block_size)) == NULL) {
525 Jmsg1(jcr, M_ERROR, 0, _("Failed to initialize decryption context for %s\n"), jcr->last_fname);
526 crypto_session_free(cs);
536 if (prev_stream != stream) {
537 if (bopen_rsrc(&altbfd, jcr->last_fname, O_WRONLY | O_TRUNC | O_BINARY, 0) < 0) {
538 Jmsg(jcr, M_ERROR, 0, _(" Cannot open resource fork for %s.\n"), jcr->last_fname);
544 Dmsg0(30, "Restoring resource fork\n");
547 if (extract_data(jcr, &altbfd, sd->msg, sd->msglen, &alt_addr, alt_flags,
548 &alt_cipher_ctx) < 0) {
559 case STREAM_HFSPLUS_ATTRIBUTES:
560 #ifdef HAVE_DARWIN_OS
561 Dmsg0(30, "Restoring Finder Info\n");
562 jcr->ff->flags |= FO_HFSPLUS;
563 if (sd->msglen != 32) {
564 Jmsg(jcr, M_ERROR, 0, _(" Invalid length of Finder Info (got %d, not 32)\n"), sd->msglen);
567 if (setattrlist(jcr->last_fname, &attrList, sd->msg, sd->msglen, 0) != 0) {
568 Jmsg(jcr, M_ERROR, 0, _(" Could not set Finder Info on %s\n"), jcr->last_fname);
576 case STREAM_UNIX_ATTRIBUTES_ACCESS_ACL:
578 pm_strcpy(jcr->acl_text, sd->msg);
579 Dmsg2(400, "Restoring ACL type 0x%2x <%s>\n", BACL_TYPE_ACCESS, jcr->acl_text);
580 if (bacl_set(jcr, BACL_TYPE_ACCESS) != 0) {
581 Qmsg1(jcr, M_WARNING, 0, _("Can't restore ACL of %s\n"), jcr->last_fname);
588 case STREAM_UNIX_ATTRIBUTES_DEFAULT_ACL:
590 pm_strcpy(jcr->acl_text, sd->msg);
591 Dmsg2(400, "Restoring ACL type 0x%2x <%s>\n", BACL_TYPE_DEFAULT, jcr->acl_text);
592 if (bacl_set(jcr, BACL_TYPE_DEFAULT) != 0) {
593 Qmsg1(jcr, M_WARNING, 0, _("Can't restore default ACL of %s\n"), jcr->last_fname);
600 case STREAM_SIGNED_DIGEST:
602 /* Is this an unexpected signature? */
604 Jmsg0(jcr, M_ERROR, 0, _("Unexpected cryptographic signature data stream.\n"));
608 /* Save signature. */
609 if (extract && (sig = crypto_sign_decode((uint8_t *)sd->msg, (uint32_t)sd->msglen)) == NULL) {
610 Jmsg1(jcr, M_ERROR, 0, _("Failed to decode message signature for %s\n"), jcr->last_fname);
614 case STREAM_MD5_DIGEST:
615 case STREAM_SHA1_DIGEST:
616 case STREAM_SHA256_DIGEST:
617 case STREAM_SHA512_DIGEST:
620 case STREAM_PROGRAM_NAMES:
621 case STREAM_PROGRAM_DATA:
622 if (!non_support_progname) {
623 Pmsg0(000, "Got Program Name or Data Stream. Ignored.\n");
624 non_support_progname++;
629 /* If extracting, wierd stream (not 1 or 2), close output file anyway */
631 Dmsg1(30, "Found wierd stream %d\n", stream);
632 if (size > 0 && !is_bopen(&bfd)) {
633 Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should be open\n"));
635 /* Flush and deallocate cipher context */
636 if (cipher_ctx.cipher) {
637 flush_cipher(jcr, &bfd, &fileAddr, flags, &cipher_ctx);
638 crypto_cipher_free(cipher_ctx.cipher);
639 cipher_ctx.cipher = NULL;
642 /* Flush and deallocate alt cipher context */
643 if (alt_cipher_ctx.cipher) {
644 flush_cipher(jcr, &altbfd, &alt_addr, alt_flags, &alt_cipher_ctx);
645 crypto_cipher_free(alt_cipher_ctx.cipher);
646 alt_cipher_ctx.cipher = NULL;
649 set_attributes(jcr, attr, &bfd);
651 /* Verify the cryptographic signature if any */
654 // Failure is reported in verify_signature() ...
655 verify_signature(jcr, sig);
657 Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
662 } else if (is_bopen(&bfd)) {
663 Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should not be open\n"));
666 Jmsg(jcr, M_ERROR, 0, _("Unknown stream=%d ignored. This shouldn't happen!\n"), stream);
667 Dmsg2(0, "None of above!!! stream=%d data=%s\n", stream,sd->msg);
669 } /* end switch(stream) */
671 } /* end while get_msg() */
673 /* If output file is still open, it was the last one in the
674 * archive since we just hit an end of file, so close the file.
676 if (is_bopen(&altbfd)) {
677 bclose_chksize(jcr, &altbfd, alt_size);
680 /* Flush and deallocate cipher context */
681 if (cipher_ctx.cipher) {
682 flush_cipher(jcr, &bfd, &fileAddr, flags, &cipher_ctx);
683 crypto_cipher_free(cipher_ctx.cipher);
684 cipher_ctx.cipher = NULL;
687 /* Flush and deallocate alt cipher context */
688 if (alt_cipher_ctx.cipher) {
689 flush_cipher(jcr, &altbfd, &alt_addr, alt_flags, &alt_cipher_ctx);
690 crypto_cipher_free(alt_cipher_ctx.cipher);
691 alt_cipher_ctx.cipher = NULL;
694 set_attributes(jcr, attr, &bfd);
696 /* Verify the cryptographic signature on the last file, if any */
699 // Failure is reported in verify_signature() ...
700 verify_signature(jcr, sig);
702 Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
707 if (is_bopen(&bfd)) {
711 set_jcr_job_status(jcr, JS_Terminated);
715 set_jcr_job_status(jcr, JS_ErrorTerminated);
718 /* Free Signature & Crypto Data */
720 crypto_sign_free(sig);
724 crypto_session_free(cs);
728 /* Free file cipher restore context */
729 if (cipher_ctx.cipher) {
730 crypto_cipher_free(cipher_ctx.cipher);
731 cipher_ctx.cipher = NULL;
733 if (cipher_ctx.buf) {
734 free_pool_memory(cipher_ctx.buf);
735 cipher_ctx.buf = NULL;
738 /* Free alternate stream cipher restore context */
739 if (alt_cipher_ctx.cipher) {
740 crypto_cipher_free(alt_cipher_ctx.cipher);
741 alt_cipher_ctx.cipher = NULL;
743 if (alt_cipher_ctx.buf) {
744 free_pool_memory(alt_cipher_ctx.buf);
745 alt_cipher_ctx.buf = NULL;
748 if (jcr->compress_buf) {
749 free(jcr->compress_buf);
750 jcr->compress_buf = NULL;
751 jcr->compress_buf_size = 0;
756 free_pool_memory(jcr->acl_text);
757 Dmsg2(10, "End Do Restore. Files=%d Bytes=%s\n", jcr->JobFiles,
758 edit_uint64(jcr->JobBytes, ec1));
759 if (non_support_data > 1 || non_support_attr > 1) {
760 Jmsg(jcr, M_ERROR, 0, _("%d non-supported data streams and %d non-supported attrib streams ignored.\n"),
761 non_support_data, non_support_attr);
763 if (non_support_rsrc) {
764 Jmsg(jcr, M_INFO, 0, _("%d non-supported resource fork streams ignored.\n"), non_support_rsrc);
766 if (non_support_finfo) {
767 Jmsg(jcr, M_INFO, 0, _("%d non-supported Finder Info streams ignored.\n"), non_support_rsrc);
769 if (non_support_acl) {
770 Jmsg(jcr, M_INFO, 0, _("%d non-supported acl streams ignored.\n"), non_support_acl);
777 * Convert ZLIB error code into an ASCII message
779 static const char *zlib_strerror(int stat)
786 return _("Zlib errno");
788 return _("Zlib stream error");
790 return _("Zlib data error");
792 return _("Zlib memory error");
794 return _("Zlib buffer error");
795 case Z_VERSION_ERROR:
796 return _("Zlib version error");
803 static int do_file_digest(FF_PKT *ff_pkt, void *pkt, bool top_level)
805 JCR *jcr = (JCR *)pkt;
806 return (digest_file(jcr, ff_pkt, jcr->digest));
810 * Verify the signature for the last restored file
811 * Return value is either true (signature correct)
812 * or false (signature could not be verified).
813 * TODO landonf: Implement without using find_one_file and
814 * without re-reading the file.
816 int verify_signature(JCR *jcr, SIGNATURE *sig)
818 X509_KEYPAIR *keypair;
819 DIGEST *digest = NULL;
821 uint64_t saved_bytes;
823 /* Iterate through the trusted signers */
824 foreach_alist(keypair, jcr->pki_signers) {
825 err = crypto_sign_get_digest(sig, jcr->pki_keypair, &digest);
828 case CRYPTO_ERROR_NONE:
829 /* Signature found, digest allocated */
830 jcr->digest = digest;
832 /* Checksum the entire file */
833 /* Make sure we don't modify JobBytes by saving and restoring it */
834 saved_bytes = jcr->JobBytes;
835 if (find_one_file(jcr, jcr->ff, do_file_digest, jcr, jcr->last_fname, (dev_t)-1, 1) != 0) {
836 Jmsg(jcr, M_ERROR, 0, _("Signature validation failed for %s: \n"), jcr->last_fname);
837 jcr->JobBytes = saved_bytes;
840 jcr->JobBytes = saved_bytes;
842 /* Verify the signature */
843 if ((err = crypto_sign_verify(sig, keypair, digest)) != CRYPTO_ERROR_NONE) {
844 Dmsg1(100, "Bad signature on %s\n", jcr->last_fname);
845 Jmsg2(jcr, M_ERROR, 0, _("Signature validation failed for %s: %s\n"), jcr->last_fname, crypto_strerror(err));
846 crypto_digest_free(digest);
850 /* Valid signature */
851 Dmsg1(100, "Signature good on %s\n", jcr->last_fname);
852 crypto_digest_free(digest);
855 case CRYPTO_ERROR_NOSIGNER:
856 /* Signature not found, try again */
859 /* Something strange happened (that shouldn't happen!)... */
860 Qmsg2(jcr, M_ERROR, 0, _("Signature validation failed for %s: %s\n"), jcr->last_fname, crypto_strerror(err));
862 crypto_digest_free(digest);
869 Dmsg1(100, "Could not find a valid public key for signature on %s\n", jcr->last_fname);
870 crypto_digest_free(digest);
874 bool sparse_data(JCR *jcr, BFILE *bfd, uint64_t *addr, char **data, uint32_t *length)
879 unser_begin(*data, SPARSE_FADDR_SIZE);
881 if (*addr != faddr) {
883 if (blseek(bfd, (boffset_t)*addr, SEEK_SET) < 0) {
885 Jmsg3(jcr, M_ERROR, 0, _("Seek to %s error on %s: ERR=%s\n"),
886 edit_uint64(*addr, ec1), jcr->last_fname,
887 be.strerror(bfd->berrno));
891 *data += SPARSE_FADDR_SIZE;
892 *length -= SPARSE_FADDR_SIZE;
896 bool decompress_data(JCR *jcr, char **data, uint32_t *length)
901 char ec1[50]; /* Buffer printing huge values */
904 * NOTE! We only use uLong and Byte because they are
905 * needed by the zlib routines, they should not otherwise
908 compress_len = jcr->compress_buf_size;
909 Dmsg2(100, "Comp_len=%d msglen=%d\n", compress_len, *length);
910 if ((stat=uncompress((Byte *)jcr->compress_buf, &compress_len,
911 (const Byte *)*data, (uLong)*length)) != Z_OK) {
912 Qmsg(jcr, M_ERROR, 0, _("Uncompression error on file %s. ERR=%s\n"),
913 jcr->last_fname, zlib_strerror(stat));
916 *data = jcr->compress_buf;
917 *length = compress_len;
918 Dmsg2(100, "Write uncompressed %d bytes, total before write=%s\n", compress_len, edit_uint64(jcr->JobBytes, ec1));
921 Qmsg(jcr, M_ERROR, 0, _("GZIP data stream found, but GZIP not configured!\n"));
926 static void unser_crypto_packet_len(RESTORE_CIPHER_CTX *ctx)
929 if (ctx->packet_len == 0 && ctx->buf_len >= CRYPTO_LEN_SIZE) {
930 unser_begin(&ctx->buf[0], CRYPTO_LEN_SIZE);
931 unser_uint32(ctx->packet_len);
932 ctx->packet_len += CRYPTO_LEN_SIZE;
936 bool store_data(JCR *jcr, BFILE *bfd, char *data, const int32_t length, bool win32_decomp)
939 if (!processWin32BackupAPIBlock(bfd, data, length)) {
941 Jmsg2(jcr, M_ERROR, 0, _("Write error in Win32 Block Decomposition on %s: %s\n"),
942 jcr->last_fname, be.strerror(bfd->berrno));
945 } else if (bwrite(bfd, data, length) != (ssize_t)length) {
947 Jmsg2(jcr, M_ERROR, 0, _("Write error on %s: %s\n"),
948 jcr->last_fname, be.strerror(bfd->berrno));
956 * In the context of jcr, write data to bfd.
957 * We write buflen bytes in buf at addr. addr is updated in place.
958 * The flags specify whether to use sparse files or compression.
959 * Return value is the number of bytes written, or -1 on errors.
961 int32_t extract_data(JCR *jcr, BFILE *bfd, POOLMEM *buf, int32_t buflen,
962 uint64_t *addr, int flags, RESTORE_CIPHER_CTX *cipher_ctx)
964 char *wbuf; /* write buffer */
965 uint32_t wsize; /* write size */
966 uint32_t rsize; /* read size */
967 uint32_t decrypted_len = 0; /* Decryption output length */
968 char ec1[50]; /* Buffer printing huge values */
971 jcr->ReadBytes += rsize;
975 if (flags & FO_ENCRYPT) {
976 ASSERT(cipher_ctx->cipher);
978 /* NOTE: We must implement block preserving semantics for the
979 * non-streaming compression and sparse code. */
982 * Grow the crypto buffer, if necessary.
983 * crypto_cipher_update() will process only whole blocks,
984 * buffering the remaining input.
986 cipher_ctx->buf = check_pool_memory_size(cipher_ctx->buf,
987 cipher_ctx->buf_len + wsize + cipher_ctx->block_size);
989 /* Decrypt the input block */
990 if (!crypto_cipher_update(cipher_ctx->cipher,
991 (const u_int8_t *)wbuf,
993 (u_int8_t *)&cipher_ctx->buf[cipher_ctx->buf_len],
995 /* Decryption failed. Shouldn't happen. */
996 Jmsg(jcr, M_FATAL, 0, _("Decryption error\n"));
1000 if (decrypted_len == 0) {
1001 /* No full block of encrypted data available, write more data */
1005 Dmsg2(100, "decrypted len=%d encrypted len=%d\n", decrypted_len, wsize);
1007 cipher_ctx->buf_len += decrypted_len;
1008 wbuf = cipher_ctx->buf;
1010 /* If one full preserved block is available, write it to disk,
1011 * and then buffer any remaining data. This should be effecient
1012 * as long as Bacula's block size is not significantly smaller than the
1013 * encryption block size (extremely unlikely!) */
1014 unser_crypto_packet_len(cipher_ctx);
1015 Dmsg1(500, "Crypto unser block size=%d\n", cipher_ctx->packet_len - CRYPTO_LEN_SIZE);
1017 if (cipher_ctx->packet_len == 0 || cipher_ctx->buf_len < cipher_ctx->packet_len) {
1018 /* No full preserved block is available. */
1022 /* We have one full block, set up the filter input buffers */
1023 wsize = cipher_ctx->packet_len - CRYPTO_LEN_SIZE;
1024 wbuf = &wbuf[CRYPTO_LEN_SIZE]; /* Skip the block length header */
1025 cipher_ctx->buf_len -= cipher_ctx->packet_len;
1026 Dmsg2(30, "Encryption writing full block, %u bytes, remaining %u bytes in buffer\n", wsize, cipher_ctx->buf_len);
1029 if (flags & FO_SPARSE) {
1030 if (!sparse_data(jcr, bfd, addr, &wbuf, &wsize)) {
1035 if (flags & FO_GZIP) {
1036 if (!decompress_data(jcr, &wbuf, &wsize)) {
1041 if (!store_data(jcr, bfd, wbuf, wsize, (flags & FO_WIN32DECOMP) != 0)) {
1044 jcr->JobBytes += wsize;
1046 Dmsg2(30, "Write %u bytes, JobBytes=%s\n", wsize, edit_uint64(jcr->JobBytes, ec1));
1048 /* Clean up crypto buffers */
1049 if (flags & FO_ENCRYPT) {
1050 /* Move any remaining data to start of buffer */
1051 if (cipher_ctx->buf_len > 0) {
1052 Dmsg1(30, "Moving %u buffered bytes to start of buffer\n", cipher_ctx->buf_len);
1053 memmove(cipher_ctx->buf, &cipher_ctx->buf[cipher_ctx->packet_len],
1054 cipher_ctx->buf_len);
1056 /* The packet was successfully written, reset the length so that the next
1057 * packet length may be re-read by unser_crypto_packet_len() */
1058 cipher_ctx->packet_len = 0;
1065 * In the context of jcr, flush any remaining data from the cipher context,
1066 * writing it to bfd.
1067 * Return value is true on success, false on failure.
1069 bool flush_cipher(JCR *jcr, BFILE *bfd, uint64_t *addr, int flags,
1070 RESTORE_CIPHER_CTX *cipher_ctx)
1072 uint32_t decrypted_len;
1073 char *wbuf; /* write buffer */
1074 uint32_t wsize; /* write size */
1075 char ec1[50]; /* Buffer printing huge values */
1076 bool second_pass = false;
1079 /* Write out the remaining block and free the cipher context */
1080 cipher_ctx->buf = check_pool_memory_size(cipher_ctx->buf, cipher_ctx->buf_len +
1081 cipher_ctx->block_size);
1083 if (!crypto_cipher_finalize(cipher_ctx->cipher, (uint8_t *)&cipher_ctx->buf[cipher_ctx->buf_len],
1085 /* Writing out the final, buffered block failed. Shouldn't happen. */
1086 Jmsg1(jcr, M_FATAL, 0, _("Decryption error for %s\n"), jcr->last_fname);
1089 Dmsg2(30, "Flush decrypt len=%d buf_len=%d\n", decrypted_len, cipher_ctx->buf_len);
1090 /* If nothing new was decrypted, and our output buffer is empty, return */
1091 if (decrypted_len == 0 && cipher_ctx->buf_len == 0) {
1095 cipher_ctx->buf_len += decrypted_len;
1097 unser_crypto_packet_len(cipher_ctx);
1098 Dmsg1(500, "Crypto unser block size=%d\n", cipher_ctx->packet_len - CRYPTO_LEN_SIZE);
1099 wsize = cipher_ctx->packet_len - CRYPTO_LEN_SIZE;
1100 wbuf = &cipher_ctx->buf[CRYPTO_LEN_SIZE]; /* Decrypted, possibly decompressed output here. */
1101 cipher_ctx->buf_len -= cipher_ctx->packet_len;
1102 Dmsg2(30, "Encryption writing full block, %u bytes, remaining %u bytes in buffer\n", wsize, cipher_ctx->buf_len);
1105 Dmsg2(30, "check buf_len=%d pkt_len=%d\n", cipher_ctx->buf_len, cipher_ctx->packet_len);
1106 if (second_pass && cipher_ctx->buf_len != cipher_ctx->packet_len) {
1107 Jmsg2(jcr, M_FATAL, 0,
1108 _("Unexpected number of bytes remaining at end of file, received %u, expected %u\n"),
1109 cipher_ctx->packet_len, cipher_ctx->buf_len);
1114 if (flags & FO_SPARSE) {
1115 if (!sparse_data(jcr, bfd, addr, &wbuf, &wsize)) {
1120 if (flags & FO_GZIP) {
1121 if (!decompress_data(jcr, &wbuf, &wsize)) {
1126 Dmsg0(30, "Call store_data\n");
1127 if (!store_data(jcr, bfd, wbuf, wsize, (flags & FO_WIN32DECOMP) != 0)) {
1130 jcr->JobBytes += wsize;
1131 Dmsg2(30, "Flush write %u bytes, JobBytes=%s\n", wsize, edit_uint64(jcr->JobBytes, ec1));
1133 /* Move any remaining data to start of buffer */
1134 if (cipher_ctx->buf_len > 0) {
1135 Dmsg1(30, "Moving %u buffered bytes to start of buffer\n", cipher_ctx->buf_len);
1136 memmove(cipher_ctx->buf, &cipher_ctx->buf[cipher_ctx->packet_len],
1137 cipher_ctx->buf_len);
1139 /* The packet was successfully written, reset the length so that the next
1140 * packet length may be re-read by unser_crypto_packet_len() */
1141 cipher_ctx->packet_len = 0;
1143 if (cipher_ctx->buf_len >0 && !second_pass) {
1148 /* Stop decryption */
1149 cipher_ctx->buf_len = 0;
1150 cipher_ctx->packet_len = 0;