*
*/
/*
- Copyright (C) 2000-2005 Kern Sibbald
+ Copyright (C) 2000-2006 Kern Sibbald
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
#include <sys/attr.h>
#endif
+#if defined(HAVE_CRYPTO)
+const bool have_crypto = true;
+#else
+const bool have_crypto = false;
+#endif
+
/* Data received from Storage Daemon */
static char rec_header[] = "rechdr %ld %ld %ld %ld %ld";
/* Forward referenced functions */
-#ifdef HAVE_LIBZ
+#if defined(HAVE_LIBZ)
static const char *zlib_strerror(int stat);
+const bool have_libz = true;
+#else
+const bool have_libz = false;
#endif
int verify_signature(JCR *jcr, SIGNATURE *sig);
int32_t extract_data(JCR *jcr, BFILE *bfd, POOLMEM *buf, int32_t buflen,
- uint64_t *addr, int flags);
+ uint64_t *addr, int flags, CIPHER_CONTEXT *cipher, uint32_t cipher_block_size);
+bool flush_cipher(JCR *jcr, BFILE *bfd, int flags, CIPHER_CONTEXT *cipher, uint32_t cipher_block_size);
#define RETRY 10 /* retry wait time */
uint64_t alt_addr = 0; /* Write address for alternative stream */
intmax_t alt_size = 0; /* Size of alternate stream */
SIGNATURE *sig = NULL; /* Cryptographic signature (if any) for file */
- int flags; /* Options for extract_data() */
+ CRYPTO_SESSION *cs = NULL; /* Cryptographic session data (if any) for file */
+ CIPHER_CONTEXT *cipher_ctx = NULL; /* Cryptographic cipher context (if any) for file */
+ uint32_t cipher_block_size = 0; /* Cryptographic algorithm block size for file */
+ int flags = 0; /* Options for extract_data() */
int stat;
ATTR *attr;
}
jcr->buf_size = sd->msglen;
-#ifdef HAVE_LIBZ
- uint32_t compress_buf_size = jcr->buf_size + 12 + ((jcr->buf_size+999) / 1000) + 100;
- jcr->compress_buf = (char *)bmalloc(compress_buf_size);
- jcr->compress_buf_size = compress_buf_size;
+#ifdef stbernard_implemented
+/ #if defined(HAVE_WIN32)
+ bool bResumeOfmOnExit = FALSE;
+ if (isOpenFileManagerRunning()) {
+ if ( pauseOpenFileManager() ) {
+ Jmsg(jcr, M_INFO, 0, _("Open File Manager paused\n") );
+ bResumeOfmOnExit = TRUE;
+ }
+ else {
+ Jmsg(jcr, M_ERROR, 0, _("FAILED to pause Open File Manager\n") );
+ }
+ }
+ {
+ char username[UNLEN+1];
+ DWORD usize = sizeof(username);
+ int privs = enable_backup_privileges(NULL, 1);
+ if (GetUserName(username, &usize)) {
+ Jmsg2(jcr, M_INFO, 0, _("Running as '%s'. Privmask=%#08x\n"), username,
+ } else {
+ Jmsg(jcr, M_WARNING, 0, _("Failed to retrieve current UserName\n"));
+ }
+ }
#endif
+ if (have_libz) {
+ uint32_t compress_buf_size = jcr->buf_size + 12 + ((jcr->buf_size+999) / 1000) + 100;
+ jcr->compress_buf = (char *)bmalloc(compress_buf_size);
+ jcr->compress_buf_size = compress_buf_size;
+ }
+
+ if (have_crypto) {
+ jcr->crypto_buf = get_memory(CRYPTO_CIPHER_MAX_BLOCK_SIZE);
+ }
+
/*
* Get a record from the Storage daemon. We are guaranteed to
* receive records in the following order:
if (size > 0 && !is_bopen(&bfd)) {
Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should be open\n"));
}
+ /* Flush and deallocate previous stream's cipher context */
+ if (cipher_ctx && prev_stream != STREAM_ENCRYPTED_SESSION_DATA) {
+ flush_cipher(jcr, &bfd, flags, cipher_ctx, cipher_block_size);
+ crypto_cipher_free(cipher_ctx);
+ cipher_ctx = NULL;
+ }
set_attributes(jcr, attr, &bfd);
extract = false;
/* Verify the cryptographic signature, if any */
if (jcr->pki_sign) {
if (sig) {
- if (!verify_signature(jcr, sig)) {
- // TODO landonf: Better signature failure handling.
- // The failure is reported to the director in verify_signature() ...
- Dmsg1(100, "Bad signature on %s\n", jcr->last_fname);
- } else {
- Dmsg1(100, "Signature good on %s\n", jcr->last_fname);
- }
- crypto_sign_free(sig);
- sig = NULL;
+ // Failure is reported in verify_signature() ...
+ verify_signature(jcr, sig);
} else {
Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
}
}
+ /* Free Signature */
+ if (sig) {
+ crypto_sign_free(sig);
+ sig = NULL;
+ }
+ if (cs) {
+ crypto_session_free(cs);
+ cs = NULL;
+ }
Dmsg0(30, "Stop extracting.\n");
} else if (is_bopen(&bfd)) {
Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should not be open\n"));
extract = true;
/* FALLTHROUGH */
case CF_CREATED: /* File created, but there is no content */
- P(jcr->mutex);
+ jcr->lock();
pm_strcpy(jcr->last_fname, attr->ofname);
- V(jcr->mutex);
+ jcr->last_type = attr->type;
jcr->JobFiles++;
+ jcr->unlock();
fileAddr = 0;
print_ls_output(jcr, attr);
#ifdef HAVE_DARWIN_OS
/* Data stream */
case STREAM_ENCRYPTED_SESSION_DATA:
- // TODO landonf: Implement
- // sig = crypto_sign_decode(sd->msg, (size_t) sd->msglen);
+ crypto_error_t cryptoerr;
+
Dmsg1(30, "Stream=Encrypted Session Data, size: %d\n", sd->msglen);
+
+ /* Decode and save session keys. */
+ cryptoerr = crypto_session_decode((uint8_t *)sd->msg, (uint32_t)sd->msglen, jcr->pki_recipients, &cs);
+ switch(cryptoerr) {
+ case CRYPTO_ERROR_NONE:
+ /* Success */
+ break;
+ case CRYPTO_ERROR_NORECIPIENT:
+ Jmsg(jcr, M_ERROR, 0, _("Missing private key required to decrypt encrypted backup data."));
+ break;
+ case CRYPTO_ERROR_DECRYPTION:
+ Jmsg(jcr, M_ERROR, 0, _("Decrypt of the session key failed."));
+ break;
+ default:
+ /* Shouldn't happen */
+ Jmsg1(jcr, M_ERROR, 0, _("An error occured while decoding encrypted session data stream: %s"), crypto_strerror(cryptoerr));
+ break;
+ }
+
+ if (cryptoerr != CRYPTO_ERROR_NONE) {
+ extract = false;
+ bclose(&bfd);
+ continue;
+ }
+
+ /* Set up a decryption context */
+ if ((cipher_ctx = crypto_cipher_new(cs, false, &cipher_block_size)) == NULL) {
+ Jmsg1(jcr, M_ERROR, 0, _("Failed to initialize decryption context for %s\n"), jcr->last_fname);
+ crypto_session_free(cs);
+ cs = NULL;
+ extract = false;
+ bclose(&bfd);
+ continue;
+ }
break;
case STREAM_FILE_DATA:
case STREAM_GZIP_DATA:
case STREAM_SPARSE_GZIP_DATA:
case STREAM_WIN32_GZIP_DATA:
+ case STREAM_ENCRYPTED_FILE_DATA:
+ case STREAM_ENCRYPTED_WIN32_DATA:
+ case STREAM_ENCRYPTED_FILE_GZIP_DATA:
+ case STREAM_ENCRYPTED_WIN32_GZIP_DATA:
/* Force an expected, consistent stream type here */
if (extract && (prev_stream == stream || prev_stream == STREAM_UNIX_ATTRIBUTES
|| prev_stream == STREAM_UNIX_ATTRIBUTES_EX
|| prev_stream == STREAM_ENCRYPTED_SESSION_DATA)) {
flags = 0;
+
if (stream == STREAM_SPARSE_DATA || stream == STREAM_SPARSE_GZIP_DATA) {
flags |= FO_SPARSE;
}
+
if (stream == STREAM_GZIP_DATA || stream == STREAM_SPARSE_GZIP_DATA
- || stream == STREAM_WIN32_GZIP_DATA) {
+ || stream == STREAM_WIN32_GZIP_DATA || stream == STREAM_ENCRYPTED_FILE_GZIP_DATA
+ || stream == STREAM_ENCRYPTED_WIN32_GZIP_DATA) {
flags |= FO_GZIP;
}
+ if (stream == STREAM_ENCRYPTED_FILE_DATA
+ || stream == STREAM_ENCRYPTED_FILE_GZIP_DATA
+ || stream == STREAM_ENCRYPTED_WIN32_DATA
+ || stream == STREAM_ENCRYPTED_WIN32_GZIP_DATA) {
+ flags |= FO_ENCRYPT;
+ }
+
if (is_win32_stream(stream) && !have_win32_api()) {
set_portable_backup(&bfd);
flags |= FO_WIN32DECOMP; /* "decompose" BackupWrite data */
}
- if (extract_data(jcr, &bfd, sd->msg, sd->msglen, &fileAddr, flags) < 0) {
+ if (extract_data(jcr, &bfd, sd->msg, sd->msglen, &fileAddr, flags, cipher_ctx, cipher_block_size) < 0) {
extract = false;
bclose(&bfd);
continue;
/* Resource fork stream - only recorded after a file to be restored */
/* Silently ignore if we cannot write - we already reported that */
+ case STREAM_ENCRYPTED_MACOS_FORK_DATA:
+ flags |= FO_ENCRYPT;
case STREAM_MACOS_FORK_DATA:
#ifdef HAVE_DARWIN_OS
if (extract) {
Dmsg0(30, "Restoring resource fork\n");
}
flags = 0;
- if (extract_data(jcr, &altbfd, sd->msg, sd->msglen, &alt_addr, flags) < 0) {
+ if (extract_data(jcr, &altbfd, sd->msg, sd->msglen, &alt_addr, flags, cipher_ctx, cipher_block_size) < 0) {
extract = false;
bclose(&altbfd);
continue;
case STREAM_SIGNED_DIGEST:
/* Save signature. */
- sig = crypto_sign_decode(sd->msg, (size_t) sd->msglen);
+ if ((sig = crypto_sign_decode((uint8_t *)sd->msg, (uint32_t)sd->msglen)) == NULL) {
+ Jmsg1(jcr, M_ERROR, 0, _("Failed to decode message signature for %s\n"), jcr->last_fname);
+ }
break;
case STREAM_MD5_DIGEST:
if (size > 0 && !is_bopen(&bfd)) {
Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should be open\n"));
}
+ /* Flush and deallocate cipher context */
+ if (cipher_ctx) {
+ flush_cipher(jcr, &bfd, flags, cipher_ctx, cipher_block_size);
+ crypto_cipher_free(cipher_ctx);
+ cipher_ctx = NULL;
+ }
set_attributes(jcr, attr, &bfd);
+
+ /* Verify the cryptographic signature if any */
+ if (jcr->pki_sign) {
+ if (sig) {
+ // Failure is reported in verify_signature() ...
+ verify_signature(jcr, sig);
+ } else {
+ Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
+ }
+ }
+
extract = false;
} else if (is_bopen(&bfd)) {
Jmsg0(jcr, M_ERROR, 0, _("Logic error: output file should not be open\n"));
bclose_chksize(jcr, &altbfd, alt_size);
}
if (extract) {
+ /* Flush and deallocate cipher context */
+ if (cipher_ctx) {
+ flush_cipher(jcr, &bfd, flags, cipher_ctx, cipher_block_size);
+ crypto_cipher_free(cipher_ctx);
+ cipher_ctx = NULL;
+ }
set_attributes(jcr, attr, &bfd);
+
+ /* Verify the cryptographic signature on the last file, if any */
+ if (jcr->pki_sign) {
+ if (sig) {
+ // Failure is reported in verify_signature() ...
+ verify_signature(jcr, sig);
+ } else {
+ Jmsg1(jcr, M_ERROR, 0, _("Missing cryptographic signature for %s\n"), jcr->last_fname);
+ }
+ }
}
+
if (is_bopen(&bfd)) {
bclose(&bfd);
}
+
set_jcr_job_status(jcr, JS_Terminated);
goto ok_out;
bail_out:
set_jcr_job_status(jcr, JS_ErrorTerminated);
ok_out:
+
+ /* Free Signature & Crypto Data */
+ if (sig) {
+ crypto_sign_free(sig);
+ sig = NULL;
+ }
+ if (cs) {
+ crypto_session_free(cs);
+ cs = NULL;
+ }
+ if (cipher_ctx) {
+ crypto_cipher_free(cipher_ctx);
+ cipher_ctx = NULL;
+ }
if (jcr->compress_buf) {
free(jcr->compress_buf);
jcr->compress_buf = NULL;
jcr->compress_buf_size = 0;
}
+ if (jcr->crypto_buf) {
+ free_pool_memory(jcr->crypto_buf);
+ jcr->crypto_buf = NULL;
+ }
bclose(&altbfd);
bclose(&bfd);
free_attr(attr);
}
-#ifdef HAVE_LIBZ
/*
* Convert ZLIB error code into an ASCII message
*/
return _("*none*");
}
}
-#endif
-static int do_file_digest(FF_PKT *ff_pkt, void *pkt, bool top_level) {
- JCR *jcr = (JCR *) pkt;
+static int do_file_digest(FF_PKT *ff_pkt, void *pkt, bool top_level)
+{
+ JCR *jcr = (JCR *)pkt;
return (digest_file(jcr, ff_pkt, jcr->digest));
}
* Verify the signature for the last restored file
* Return value is either true (signature correct)
* or false (signature could not be verified).
+ * TODO landonf: Better signature failure handling.
*/
int verify_signature(JCR *jcr, SIGNATURE *sig)
{
DIGEST *digest = NULL;
crypto_error_t err;
-
/* Iterate through the trusted signers */
foreach_alist(keypair, jcr->pki_signers) {
err = crypto_sign_get_digest(sig, jcr->pki_keypair, &digest);
/* Verify the signature */
if ((err = crypto_sign_verify(sig, keypair, digest)) != CRYPTO_ERROR_NONE) {
+ Dmsg1(100, "Bad signature on %s\n", jcr->last_fname);
Qmsg2(jcr, M_ERROR, 0, _("Signature validation failed for %s: %s\n"), jcr->last_fname, crypto_strerror(err));
crypto_digest_free(digest);
return false;
}
/* Valid signature */
+ Dmsg1(100, "Signature good on %s\n", jcr->last_fname);
crypto_digest_free(digest);
return true;
}
}
- /* Unreachable */
+ /* No signer */
+ Dmsg1(100, "Could not find a valid public key for signature on %s\n", jcr->last_fname);
+ crypto_digest_free(digest);
return false;
}
* Return value is the number of bytes written, or -1 on errors.
*/
int32_t extract_data(JCR *jcr, BFILE *bfd, POOLMEM *buf, int32_t buflen,
- uint64_t *addr, int flags)
+ uint64_t *addr, int flags, CIPHER_CONTEXT *cipher, uint32_t cipher_block_size)
{
int stat;
char *wbuf; /* write buffer */
uint32_t wsize; /* write size */
uint32_t rsize; /* read size */
char ec1[50]; /* Buffer printing huge values */
+ const uint8_t *cipher_input; /* Decryption input */
+ uint32_t cipher_input_len; /* Decryption input length */
+ uint32_t decrypted_len = 0; /* Decryption output length */
if (flags & FO_SPARSE) {
ser_declare;
rsize = buflen;
}
wsize = rsize;
+ cipher_input = (uint8_t *)wbuf;
+ cipher_input_len = (uint32_t)wsize;
if (flags & FO_GZIP) {
#ifdef HAVE_LIBZ
}
wbuf = jcr->compress_buf;
wsize = compress_len;
+ cipher_input = (uint8_t *)jcr->compress_buf; /* decrypt decompressed data */
+ cipher_input_len = compress_len;
Dmsg2(100, "Write uncompressed %d bytes, total before write=%s\n", compress_len, edit_uint64(jcr->JobBytes, ec1));
#else
Qmsg(jcr, M_ERROR, 0, _("GZIP data stream found, but GZIP not configured!\n"));
Dmsg2(30, "Write %u bytes, total before write=%s\n", wsize, edit_uint64(jcr->JobBytes, ec1));
}
+ if (flags & FO_ENCRYPT) {
+ ASSERT(cipher);
+
+ /*
+ * Grow the crypto buffer, if necessary.
+ * crypto_cipher_update() will process only whole blocks,
+ * buffering the remaining input.
+ */
+ jcr->crypto_buf = check_pool_memory_size(jcr->crypto_buf, cipher_input_len + cipher_block_size);
+
+
+ /* Encrypt the input block */
+ if (!crypto_cipher_update(cipher, cipher_input, cipher_input_len, (uint8_t *)jcr->crypto_buf, &decrypted_len)) {
+ /* Decryption failed. Shouldn't happen. */
+ Jmsg(jcr, M_FATAL, 0, _("Decryption error\n"));
+ return -1;
+ }
+
+ if (decrypted_len == 0) {
+ /* No full block of data available, write more data */
+ goto ok;
+ }
+
+ Dmsg2(400, "decrypted len=%d undecrypted len=%d\n",
+ decrypted_len, cipher_input_len);
+ wsize = decrypted_len;
+ wbuf = jcr->crypto_buf; /* Decrypted, possibly decompressed output here. */
+ }
+
+
if (flags & FO_WIN32DECOMP) {
if (!processWin32BackupAPIBlock(bfd, wbuf, wsize)) {
berrno be;
return -1;
}
+ if (decrypted_len && decrypted_len > wsize) {
+ /* If more than wsize is output, it was previously buffered
+ * and reported, and should not be reported again */
+ wsize = wsize - decrypted_len;
+ }
+
+ok:
jcr->JobBytes += wsize;
jcr->ReadBytes += rsize;
*addr += wsize;
return wsize;
}
+
+/*
+ * In the context of jcr, flush any remaining data from the cipher context,
+ * writing it to bfd.
+ * Return value is true on success, false on failure.
+ */
+bool flush_cipher(JCR *jcr, BFILE *bfd, int flags, CIPHER_CONTEXT *cipher, uint32_t cipher_block_size)
+{
+ uint32_t decrypted_len;
+
+ /* Write out the remaining block and free the cipher context */
+ jcr->crypto_buf = check_pool_memory_size(jcr->crypto_buf, cipher_block_size);
+
+ if (!crypto_cipher_finalize(cipher, (uint8_t *)jcr->crypto_buf, &decrypted_len)) {
+ /* Writing out the final, buffered block failed. Shouldn't happen. */
+ Jmsg1(jcr, M_FATAL, 0, _("Decryption error for %s\n"), jcr->last_fname);
+ }
+
+ if (flags & FO_WIN32DECOMP) {
+ if (!processWin32BackupAPIBlock(bfd, jcr->crypto_buf, decrypted_len)) {
+ berrno be;
+ Jmsg2(jcr, M_ERROR, 0, _("Write error in Win32 Block Decomposition on %s: %s\n"),
+ jcr->last_fname, be.strerror(bfd->berrno));
+ return false;
+ }
+ } else if (bwrite(bfd, jcr->crypto_buf, decrypted_len) != (ssize_t)decrypted_len) {
+ berrno be;
+ Jmsg2(jcr, M_ERROR, 0, _("Write error on %s: %s\n"),
+ jcr->last_fname, be.strerror(bfd->berrno));
+ return false;
+ }
+
+ return true;
+}
projects / bacula / bacula / blobdiff