} else {
export_ctx.buf = NULL;
}
+ export_ctx.buf_filled = 0;
export_ctx.bytes_remaining = size;
err = OpenEncryptedFileRawW(lte->file_on_disk, 0, &file_ctx);
return status;
}
+static DWORD WINAPI
+win32_tally_encrypted_size_cb(unsigned char *_data, void *_ctx,
+ unsigned long len)
+{
+ *(u64*)_ctx += len;
+ return ERROR_SUCCESS;
+}
+
+static int
+win32_get_encrypted_file_size(const wchar_t *path, u64 *size_ret)
+{
+ DWORD err;
+ void *file_ctx;
+ int ret;
+
+ *size_ret = 0;
+ err = OpenEncryptedFileRawW(path, 0, &file_ctx);
+ if (err != ERROR_SUCCESS) {
+ ERROR("Failed to open encrypted file \"%ls\" for raw read", path);
+ win32_error(err);
+ return WIMLIB_ERR_OPEN;
+ }
+ err = ReadEncryptedFileRaw(win32_tally_encrypted_size_cb,
+ size_ret, file_ctx);
+ if (err != ERROR_SUCCESS) {
+ ERROR("Failed to read raw encrypted data from \"%ls\"", path);
+ win32_error(err);
+ ret = WIMLIB_ERR_READ;
+ } else {
+ ret = 0;
+ }
+ CloseEncryptedFileRaw(file_ctx);
+ return ret;
+}
+
/* Scans an unnamed or named stream of a Win32 file (not a reparse point
* stream); calculates its SHA1 message digest and either creates a `struct
* wim_lookup_table_entry' in memory for it, or uses an existing 'struct
}
lte->file_on_disk = spath;
spath = NULL;
- if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED && !is_named_stream)
+ if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED && !is_named_stream) {
+ u64 encrypted_size;
lte->resource_location = RESOURCE_WIN32_ENCRYPTED;
- else
+ ret = win32_get_encrypted_file_size(path, &encrypted_size);
+ if (ret)
+ goto out_free_spath;
+ lte->resource_entry.original_size = encrypted_size;
+ } else {
lte->resource_location = RESOURCE_WIN32;
- lte->resource_entry.original_size = (u64)dat->StreamSize.QuadPart;
+ lte->resource_entry.original_size = (u64)dat->StreamSize.QuadPart;
+ }
u32 stream_id;
if (is_named_stream) {
file_size = ((u64)file_info.nFileSizeHigh << 32) |
(u64)file_info.nFileSizeLow;
+ CloseHandle(hFile);
+
/* Capture the unnamed data stream (only should be present for regular
* files) and any alternate data streams. */
ret = win32_capture_streams(path,
file_size,
vol_flags);
if (ret)
- goto out_close_handle;
+ goto out;
if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
/* Reparse point: set the reparse data (which we read already)
state,
vol_flags);
}
+ goto out;
out_close_handle:
CloseHandle(hFile);
out:
}
static int
-win32_set_compressed(HANDLE hFile, const wchar_t *path)
+win32_set_compression_state(HANDLE hFile, USHORT format, const wchar_t *path)
{
- USHORT format = COMPRESSION_FORMAT_DEFAULT;
DWORD bytesReturned = 0;
if (!DeviceIoControl(hFile, FSCTL_SET_COMPRESSION,
&format, sizeof(USHORT),
NULL, 0,
&bytesReturned, NULL))
{
+ DWORD err = GetLastError();
+ if (err == ERROR_INVALID_FUNCTION)
+ {
+ /* XXX: This can happen if we're extracting an
+ * unexpected file in an encrypted directory. The file
+ * gets its encryption flag set and therefore cannot be
+ * compressed. */
+ return 0;
+ }
+
/* Could be a warning only, but we only call this if the volume
* supports compression. So I'm calling this an error. */
- DWORD err = GetLastError();
ERROR("Failed to set compression flag on \"%ls\"", path);
win32_error(err);
if (err == ERROR_ACCESS_DENIED || err == ERROR_PRIVILEGE_NOT_HELD)
win32_extract_chunk, hStream);
}
+struct win32_encrypted_extract_ctx {
+ void *file_ctx;
+ int wimlib_err_code;
+ bool done;
+ pthread_cond_t cond;
+ pthread_mutex_t mutex;
+ u8 buf[WIM_CHUNK_SIZE];
+ size_t buf_filled;
+};
+
+static DWORD WINAPI
+win32_encrypted_import_cb(unsigned char *data, void *_ctx,
+ unsigned long *len_p)
+{
+ struct win32_encrypted_extract_ctx *ctx = _ctx;
+ unsigned long len = *len_p;
+
+ pthread_mutex_lock(&ctx->mutex);
+ while (len) {
+ size_t bytes_to_copy;
+
+ DEBUG("Importing up to %lu more bytes of raw encrypted data", len);
+ while (ctx->buf_filled == 0) {
+ if (ctx->done)
+ goto out;
+ pthread_cond_wait(&ctx->cond, &ctx->mutex);
+ }
+ bytes_to_copy = min(len, ctx->buf_filled);
+ memcpy(data, ctx->buf, bytes_to_copy);
+ len -= bytes_to_copy;
+ data += bytes_to_copy;
+ ctx->buf_filled -= bytes_to_copy;
+ memmove(ctx->buf, ctx->buf + bytes_to_copy, ctx->buf_filled);
+ pthread_cond_signal(&ctx->cond);
+ }
+out:
+ *len_p -= len;
+ pthread_mutex_unlock(&ctx->mutex);
+ return ERROR_SUCCESS;
+}
+
+static void *
+win32_encrypted_import_proc(void *arg)
+{
+ struct win32_encrypted_extract_ctx *ctx = arg;
+ DWORD ret;
+ ret = WriteEncryptedFileRaw(win32_encrypted_import_cb, ctx,
+ ctx->file_ctx);
+ pthread_mutex_lock(&ctx->mutex);
+ if (ret == ERROR_SUCCESS)
+ ctx->wimlib_err_code = 0;
+ else {
+ win32_error(ret);
+ ctx->wimlib_err_code = WIMLIB_ERR_WRITE;
+ }
+ ctx->done = true;
+ pthread_mutex_unlock(&ctx->mutex);
+ return NULL;
+}
+
+
+static int
+win32_extract_raw_encrypted_chunk(const void *buf, size_t len, void *arg)
+{
+ struct win32_encrypted_extract_ctx *ctx = arg;
+ size_t bytes_to_copy;
+
+ while (len) {
+ DEBUG("Extracting up to %zu more bytes of encrypted data", len);
+ pthread_mutex_lock(&ctx->mutex);
+ while (!ctx->done && ctx->buf_filled == WIM_CHUNK_SIZE)
+ pthread_cond_wait(&ctx->cond, &ctx->mutex);
+ if (ctx->done) {
+ pthread_mutex_unlock(&ctx->mutex);
+ return ctx->wimlib_err_code;
+ }
+ bytes_to_copy = min(len, WIM_CHUNK_SIZE - ctx->buf_filled);
+ memcpy(&ctx->buf[ctx->buf_filled], buf, bytes_to_copy);
+ len -= bytes_to_copy;
+ buf += bytes_to_copy;
+ ctx->buf_filled += bytes_to_copy;
+ pthread_cond_signal(&ctx->cond);
+ pthread_mutex_unlock(&ctx->mutex);
+ }
+ return 0;
+}
+
static int
do_win32_extract_encrypted_stream(const wchar_t *path,
const struct wim_lookup_table_entry *lte)
{
- ERROR("Extracting encryted streams not implemented");
- return WIMLIB_ERR_INVALID_PARAM;
+ struct win32_encrypted_extract_ctx ctx;
+ void *file_ctx;
+ pthread_t import_thread;
+ int ret;
+ int ret2;
+
+ DEBUG("Opening file \"%ls\" to extract raw encrypted data", path);
+
+ ret = OpenEncryptedFileRawW(path, CREATE_FOR_IMPORT, &file_ctx);
+ if (ret) {
+ ERROR("Failed to open \"%ls\" to write raw encrypted data", path);
+ win32_error(ret);
+ return WIMLIB_ERR_OPEN;
+ }
+
+ ctx.file_ctx = file_ctx;
+ ctx.buf_filled = 0;
+ ctx.done = false;
+ ctx.wimlib_err_code = 0;
+ if (pthread_mutex_init(&ctx.mutex, NULL)) {
+ ERROR_WITH_ERRNO("Can't create mutex");
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_close;
+ }
+ if (pthread_cond_init(&ctx.cond, NULL)) {
+ ERROR_WITH_ERRNO("Can't create condition variable");
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_pthread_mutex_destroy;
+ }
+ ret = pthread_create(&import_thread, NULL,
+ win32_encrypted_import_proc, &ctx);
+ if (ret) {
+ errno = ret;
+ ERROR_WITH_ERRNO("Failed to create thread");
+ ret = WIMLIB_ERR_FORK;
+ goto out_pthread_cond_destroy;
+ }
+
+ ret = extract_wim_resource(lte, wim_resource_size(lte),
+ win32_extract_raw_encrypted_chunk, &ctx);
+ pthread_mutex_lock(&ctx.mutex);
+ ctx.done = true;
+ pthread_cond_signal(&ctx.cond);
+ pthread_mutex_unlock(&ctx.mutex);
+ ret2 = pthread_join(import_thread, NULL);
+ if (ret2) {
+ errno = ret2;
+ ERROR_WITH_ERRNO("Failed to join encrypted import thread");
+ if (ret == 0)
+ ret = WIMLIB_ERR_WRITE;
+ }
+ if (ret == 0)
+ ret = ctx.wimlib_err_code;
+out_pthread_cond_destroy:
+ pthread_cond_destroy(&ctx.cond);
+out_pthread_mutex_destroy:
+ pthread_mutex_destroy(&ctx.mutex);
+out_close:
+ CloseEncryptedFileRaw(file_ctx);
+ if (ret)
+ ERROR("Failed to extract encrypted file \"%ls\"", path);
+ return ret;
}
static bool
return (*path == L'\0');
}
-static DWORD
-win32_get_create_flags_and_attributes(DWORD i_attributes)
+static inline DWORD
+win32_mask_attributes(DWORD i_attributes)
{
- DWORD attributes;
+ return i_attributes & ~(FILE_ATTRIBUTE_SPARSE_FILE |
+ FILE_ATTRIBUTE_COMPRESSED |
+ FILE_ATTRIBUTE_REPARSE_POINT |
+ FILE_ATTRIBUTE_DIRECTORY |
+ FILE_ATTRIBUTE_ENCRYPTED |
+ FILE_FLAG_DELETE_ON_CLOSE |
+ FILE_FLAG_NO_BUFFERING |
+ FILE_FLAG_OPEN_NO_RECALL |
+ FILE_FLAG_OVERLAPPED |
+ FILE_FLAG_RANDOM_ACCESS |
+ /*FILE_FLAG_SESSION_AWARE |*/
+ FILE_FLAG_SEQUENTIAL_SCAN |
+ FILE_FLAG_WRITE_THROUGH);
+}
+static inline DWORD
+win32_get_create_flags_and_attributes(DWORD i_attributes)
+{
/*
* Some attributes cannot be set by passing them to CreateFile(). In
* particular:
* want, but also specify FILE_FLAG_OPEN_REPARSE_POINT and
* FILE_FLAG_BACKUP_SEMANTICS as we are a backup application.
*/
- attributes = i_attributes & ~(FILE_ATTRIBUTE_SPARSE_FILE |
- FILE_ATTRIBUTE_COMPRESSED |
- FILE_ATTRIBUTE_REPARSE_POINT |
- FILE_ATTRIBUTE_DIRECTORY |
- FILE_FLAG_DELETE_ON_CLOSE |
- FILE_FLAG_NO_BUFFERING |
- FILE_FLAG_OPEN_NO_RECALL |
- FILE_FLAG_OVERLAPPED |
- FILE_FLAG_RANDOM_ACCESS |
- /*FILE_FLAG_SESSION_AWARE |*/
- FILE_FLAG_SEQUENTIAL_SCAN |
- FILE_FLAG_WRITE_THROUGH);
- return attributes |
- FILE_FLAG_OPEN_REPARSE_POINT |
- FILE_FLAG_BACKUP_SEMANTICS;
-}
-
-static bool
-inode_has_special_attributes(const struct wim_inode *inode)
-{
- return (inode->i_attributes & (FILE_ATTRIBUTE_COMPRESSED |
- FILE_ATTRIBUTE_REPARSE_POINT |
- FILE_ATTRIBUTE_SPARSE_FILE)) != 0;
+ return win32_mask_attributes(i_attributes) |
+ FILE_FLAG_OPEN_REPARSE_POINT |
+ FILE_FLAG_BACKUP_SEMANTICS;
}
/* Set compression or sparse attributes, and reparse data, if supported by the
{
int ret;
- if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
+ /* Encrypted files cannot be [de]compressed. */
+ if (!(inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED)) {
if (vol_flags & FILE_FILE_COMPRESSION) {
- DEBUG("Setting compression flag on \"%ls\"", path);
- ret = win32_set_compressed(hFile, path);
+ USHORT format;
+ if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
+ format = COMPRESSION_FORMAT_DEFAULT;
+ DEBUG("Setting compression flag on \"%ls\"", path);
+ } else {
+ format = COMPRESSION_FORMAT_NONE;
+ DEBUG("Clearing compression flag on \"%ls\"", path);
+ }
+ ret = win32_set_compression_state(hFile, format, path);
if (ret)
return ret;
} else {
- DEBUG("Cannot set compression attribute on \"%ls\": "
- "volume does not support transparent compression",
- path);
+ if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
+ DEBUG("Cannot set compression attribute on \"%ls\": "
+ "volume does not support transparent compression",
+ path);
+ }
}
}
return 0;
}
+static int
+win32_begin_extract_unnamed_stream(const struct wim_inode *inode,
+ const struct wim_lookup_table_entry *lte,
+ const wchar_t *path,
+ DWORD *creationDisposition_ret,
+ unsigned int vol_flags)
+{
+ DWORD err;
+ int ret;
+
+ /* Directories must be created with CreateDirectoryW(). Then
+ * the call to CreateFileW() will merely open the directory that
+ * was already created rather than creating a new file. */
+ if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
+ if (!CreateDirectoryW(path, NULL)) {
+ err = GetLastError();
+ switch (err) {
+ case ERROR_ALREADY_EXISTS:
+ break;
+ case ERROR_ACCESS_DENIED:
+ if (path_is_root_of_drive(path))
+ break;
+ /* Fall through */
+ default:
+ ERROR("Failed to create directory \"%ls\"",
+ path);
+ win32_error(err);
+ return WIMLIB_ERR_MKDIR;
+ }
+ }
+ DEBUG("Created directory \"%ls\"", path);
+ *creationDisposition_ret = OPEN_EXISTING;
+ }
+ if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED &&
+ vol_flags & FILE_SUPPORTS_ENCRYPTION)
+ {
+ if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
+ if (!EncryptFile(path)) {
+ err = GetLastError();
+ ERROR("Failed to encrypt directory \"%ls\"",
+ path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ } else {
+ ret = do_win32_extract_encrypted_stream(path, lte);
+ if (ret)
+ return ret;
+ DEBUG("Extracted encrypeted file \"%ls\"", path);
+ *creationDisposition_ret = OPEN_EXISTING;
+ }
+ }
+ if (*creationDisposition_ret == OPEN_EXISTING)
+ {
+ if (!SetFileAttributesW(path,
+ win32_mask_attributes(inode->i_attributes)))
+ {
+ err = GetLastError();
+ ERROR("Failed to set attributes on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ }
+ return 0;
+}
+
static int
win32_extract_stream(const struct wim_inode *inode,
const wchar_t *path,
* */
stream_path = (wchar_t*)path;
- /* Directories must be created with CreateDirectoryW(). Then
- * the call to CreateFileW() will merely open the directory that
- * was already created rather than creating a new file. */
- if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
- if (!CreateDirectoryW(stream_path, NULL)) {
- err = GetLastError();
- switch (err) {
- case ERROR_ALREADY_EXISTS:
- break;
- case ERROR_ACCESS_DENIED:
- if (path_is_root_of_drive(path))
- break;
- /* Fall through */
- default:
- ERROR("Failed to create directory \"%ls\"",
- stream_path);
- win32_error(err);
- ret = WIMLIB_ERR_MKDIR;
- goto fail;
- }
- }
- DEBUG("Created directory \"%ls\"", stream_path);
- creationDisposition = OPEN_EXISTING;
- }
+ ret = win32_begin_extract_unnamed_stream(inode, lte, path,
+ &creationDisposition,
+ args->vol_flags);
+ if (ret)
+ goto fail;
}
DEBUG("Opening \"%ls\"", stream_path);
goto fail_close_handle;
}
- if (inode_has_special_attributes(inode)) {
- ret = win32_set_special_attributes(h, inode, lte, path,
- args->vol_flags);
- if (ret)
- goto fail_close_handle;
- }
+ ret = win32_set_special_attributes(h, inode, lte, path,
+ args->vol_flags);
+ if (ret)
+ goto fail_close_handle;
}
- if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
- if (lte) {
- DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
- stream_path, wim_resource_size(lte));
- if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED
- && stream_name_utf16 == NULL
- && (args->vol_flags & FILE_SUPPORTS_ENCRYPTION))
- {
- ret = do_win32_extract_encrypted_stream(stream_path,
- lte);
- } else {
- ret = do_win32_extract_stream(h, lte);
- }
- if (ret)
- goto fail_close_handle;
- }
+ if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+ lte != NULL &&
+ creationDisposition != OPEN_EXISTING)
+ {
+ DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
+ stream_path, wim_resource_size(lte));
+ ret = do_win32_extract_stream(h, lte);
}
DEBUG("Closing \"%ls\"", stream_path);
fail_close_handle:
CloseHandle(h);
fail:
- ERROR("Error extracting %ls", stream_path);
+ ERROR("Error extracting \"%ls\"", stream_path);
out:
return ret;
}
git://wimlib.net / wimlib / blobdiff