+static u64
+FILETIME_to_u64(const FILETIME *ft)
+{
+ return ((u64)ft->dwHighDateTime << 32) | (u64)ft->dwLowDateTime;
+}
+
+static int
+win32_get_short_name(struct wim_dentry *dentry, const wchar_t *path)
+{
+ WIN32_FIND_DATAW dat;
+ if (FindFirstFileW(path, &dat) && dat.cAlternateFileName[0] != L'\0') {
+ size_t short_name_nbytes = wcslen(dat.cAlternateFileName) *
+ sizeof(wchar_t);
+ size_t n = short_name_nbytes + sizeof(wchar_t);
+ dentry->short_name = MALLOC(n);
+ if (!dentry->short_name)
+ return WIMLIB_ERR_NOMEM;
+ memcpy(dentry->short_name, dat.cAlternateFileName, n);
+ dentry->short_name_nbytes = short_name_nbytes;
+ }
+ return 0;
+}
+
+static int
+win32_get_security_descriptor(struct wim_dentry *dentry,
+ struct sd_set *sd_set,
+ const wchar_t *path)
+{
+ SECURITY_INFORMATION requestedInformation;
+ DWORD lenNeeded = 0;
+ BOOL status;
+ DWORD err;
+
+ requestedInformation = DACL_SECURITY_INFORMATION |
+ SACL_SECURITY_INFORMATION |
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION;
+ /* Request length of security descriptor */
+ status = GetFileSecurityW(path, requestedInformation,
+ NULL, 0, &lenNeeded);
+ err = GetLastError();
+ if (!status && err == ERROR_INSUFFICIENT_BUFFER) {
+ DWORD len = lenNeeded;
+ char buf[len];
+ if (GetFileSecurityW(path, requestedInformation,
+ (PSECURITY_DESCRIPTOR)buf, len, &lenNeeded))
+ {
+ int security_id = sd_set_add_sd(sd_set, buf, len);
+ if (security_id < 0)
+ return WIMLIB_ERR_NOMEM;
+ else {
+ dentry->d_inode->i_security_id = security_id;
+ return 0;
+ }
+ } else {
+ err = GetLastError();
+ }
+ }
+
+ if (err == ERROR_ACCESS_DENIED) {
+ WARNING("Failed to read security descriptor of \"%ls\": "
+ "Access denied!\n%ls", path, access_denied_msg);
+ return 0;
+ } else {
+ ERROR("Failed to read security descriptor of \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+}
+
+static int
+win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
+ const wchar_t *path,
+ const size_t path_num_chars,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func);
+
+/* Reads the directory entries of directory using a Win32 API and recursively
+ * calls win32_build_dentry_tree() on them. */
+static int
+win32_recurse_directory(struct wim_dentry *root,
+ const wchar_t *dir_path,
+ const size_t dir_path_num_chars,
+ struct wim_lookup_table *lookup_table,
+ struct sd_set *sd_set,
+ const struct capture_config *config,
+ int add_image_flags,
+ wimlib_progress_func_t progress_func)
+{
+ WIN32_FIND_DATAW dat;
+ HANDLE hFind;
+ DWORD err;
+ int ret;
+
+ {
+ /* Begin reading the directory by calling FindFirstFileW.
+ * Unlike UNIX opendir(), FindFirstFileW has file globbing built
+ * into it. But this isn't what we actually want, so just add a
+ * dummy glob to get all entries. */
+ wchar_t pattern_buf[dir_path_num_chars + 3];
+ swprintf(pattern_buf, L"%ls/*", dir_path);
+ hFind = FindFirstFileW(pattern_buf, &dat);
+ }
+ if (hFind == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ if (err == ERROR_FILE_NOT_FOUND) {
+ return 0;
+ } else {
+ ERROR("Failed to read directory \"%ls\"", dir_path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ }
+ ret = 0;
+ do {
+ /* Skip . and .. entries */
+ if (wcscmp(dat.cFileName, L".") && wcscmp(dat.cFileName, L".."))
+ {
+ size_t filename_num_chars = wcslen(dat.cFileName);
+ size_t new_path_num_chars = dir_path_num_chars + 1 +
+ filename_num_chars;
+ wchar_t new_path[new_path_num_chars + 1];
+
+ swprintf(new_path, L"%ls/%ls", dir_path, dat.cFileName);
+
+ struct wim_dentry *child;
+ ret = win32_build_dentry_tree_recursive(&child,
+ new_path,
+ new_path_num_chars,
+ lookup_table,
+ sd_set,
+ config,
+ add_image_flags,
+ progress_func);
+ if (ret)
+ goto out_find_close;
+ if (child)
+ dentry_add_child(root, child);
+ }
+ } while (FindNextFileW(hFind, &dat));
+ err = GetLastError();
+ if (err != ERROR_NO_MORE_FILES) {
+ ERROR("Failed to read directory \"%ls\"", dir_path);
+ win32_error(err);
+ if (ret == 0)
+ ret = WIMLIB_ERR_READ;
+ }
+out_find_close:
+ FindClose(hFind);
+ return ret;
+}
+
+/* Load a reparse point into a WIM inode. It is just stored in memory.
+ *
+ * @hFile: Open handle to a reparse point, with permission to read the reparse
+ * data.
+ *
+ * @inode: WIM inode for the reparse point.
+ *
+ * @lookup_table: Stream lookup table for the WIM; an entry will be added to it
+ * for the reparse point unless an entry already exists for
+ * the exact same data stream.
+ *
+ * @path: External path to the reparse point. Used for error messages only.
+ *
+ * Returns 0 on success; nonzero on failure. */
+static int
+win32_capture_reparse_point(HANDLE hFile,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ const wchar_t *path)
+{
+ /* "Reparse point data, including the tag and optional GUID,
+ * cannot exceed 16 kilobytes." - MSDN */
+ char reparse_point_buf[16 * 1024];
+ DWORD bytesReturned;
+
+ if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
+ NULL, /* "Not used with this operation; set to NULL" */
+ 0, /* "Not used with this operation; set to 0" */
+ reparse_point_buf, /* "A pointer to a buffer that
+ receives the reparse point data */
+ sizeof(reparse_point_buf), /* "The size of the output
+ buffer, in bytes */
+ &bytesReturned,
+ NULL))
+ {
+ DWORD err = GetLastError();
+ ERROR("Failed to get reparse data of \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ if (bytesReturned < 8) {
+ ERROR("Reparse data on \"%ls\" is invalid", path);
+ return WIMLIB_ERR_READ;
+ }
+ inode->i_reparse_tag = le32_to_cpu(*(u32*)reparse_point_buf);
+ return inode_add_ads_with_data(inode, L"",
+ reparse_point_buf + 8,
+ bytesReturned - 8, lookup_table);
+}
+
+/* Calculate the SHA1 message digest of a Win32 data stream, which may be either
+ * an unnamed or named data stream.
+ *
+ * @path: Path to the file, with the stream noted at the end for named
+ * streams. UTF-16LE encoding.
+ *
+ * @hash: On success, the SHA1 message digest of the stream is written to
+ * this location.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_sha1sum(const wchar_t *path, u8 hash[SHA1_HASH_SIZE])
+{
+ HANDLE hFile;
+ SHA_CTX ctx;
+ u8 buf[32768];
+ DWORD bytesRead;
+ int ret;
+
+ hFile = win32_open_file_data_only(path);
+ if (hFile == INVALID_HANDLE_VALUE)
+ return WIMLIB_ERR_OPEN;
+
+ sha1_init(&ctx);
+ for (;;) {
+ if (!ReadFile(hFile, buf, sizeof(buf), &bytesRead, NULL)) {
+ ret = WIMLIB_ERR_READ;
+ goto out_close_handle;
+ }
+ if (bytesRead == 0)
+ break;
+ sha1_update(&ctx, buf, bytesRead);
+ }
+ ret = 0;
+ sha1_final(hash, &ctx);
+out_close_handle:
+ CloseHandle(hFile);
+ 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
+ * wim_lookup_table_entry' for an identical stream.
+ *
+ * @path: Path to the file (UTF-16LE).
+ *
+ * @path_num_chars: Number of 2-byte characters in @path.
+ *
+ * @inode: WIM inode to save the stream into.
+ *
+ * @lookup_table: Stream lookup table for the WIM.
+ *
+ * @dat: A `WIN32_FIND_STREAM_DATA' structure that specifies the
+ * stream name.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_capture_stream(const wchar_t *path,
+ size_t path_num_chars,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ WIN32_FIND_STREAM_DATA *dat)
+{
+ struct wim_ads_entry *ads_entry;
+ u8 hash[SHA1_HASH_SIZE];
+ struct wim_lookup_table_entry *lte;
+ int ret;
+ wchar_t *stream_name, *colon;
+ size_t stream_name_nchars;
+ bool is_named_stream;
+ wchar_t *spath;
+ size_t spath_nchars;
+ DWORD err;
+ size_t spath_buf_nbytes;
+ const wchar_t *relpath_prefix;
+ const wchar_t *colonchar;
+
+ /* The stream name should be returned as :NAME:TYPE */
+ stream_name = dat->cStreamName;
+ if (*stream_name != L':')
+ goto out_invalid_stream_name;
+ stream_name += 1;
+ colon = wcschr(stream_name, L':');
+ if (colon == NULL)
+ goto out_invalid_stream_name;
+
+ if (wcscmp(colon + 1, L"$DATA")) {
+ /* Not a DATA stream */
+ ret = 0;
+ goto out;
+ }
+
+ *colon = '\0';
+
+ stream_name_nchars = colon - stream_name;
+ is_named_stream = (stream_name_nchars != 0);
+
+ if (is_named_stream) {
+ /* Allocate an ADS entry for the named stream. */
+ ads_entry = inode_add_ads_utf16le(inode, stream_name,
+ stream_name_nchars * sizeof(wchar_t));
+ if (!ads_entry) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out;
+ }
+ }
+
+ /* Create a UTF-16LE string @spath that gives the filename, then a
+ * colon, then the stream name. Or, if it's an unnamed stream, just the
+ * filename. It is MALLOC()'ed so that it can be saved in the
+ * wim_lookup_table_entry if needed.
+ *
+ * As yet another special case, relative paths need to be changed to
+ * begin with an explicit "./" so that, for example, a file t:ads, where
+ * :ads is the part we added, is not interpreted as a file on the t:
+ * drive. */
+ spath_nchars = path_num_chars;
+ relpath_prefix = L"";
+ colonchar = L"";
+ if (is_named_stream) {
+ spath_nchars += 1 + stream_name_nchars;
+ colonchar = L":";
+ if (path_num_chars == 1 &&
+ path[0] != L'/' &&
+ path[0] != L'\\')
+ {
+ spath_nchars += 2;
+ relpath_prefix = L"./";
+ }
+ }
+
+ spath_buf_nbytes = (spath_nchars + 1) * sizeof(wchar_t);
+ spath = MALLOC(spath_buf_nbytes);
+
+ swprintf(spath, L"%ls%ls%ls%ls",
+ relpath_prefix, path, colonchar, stream_name);
+
+ ret = win32_sha1sum(spath, hash);
+ if (ret) {
+ err = GetLastError();
+ ERROR("Failed to read \"%ls\" to calculate SHA1sum", spath);
+ win32_error(err);
+ goto out_free_spath;
+ }
+
+ lte = __lookup_resource(lookup_table, hash);
+ if (lte) {
+ /* Use existing wim_lookup_table_entry that has the same SHA1
+ * message digest */
+ lte->refcnt++;
+ } else {
+ /* Make a new wim_lookup_table_entry */
+ lte = new_lookup_table_entry();
+ if (!lte) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_free_spath;
+ }
+ lte->file_on_disk = spath;
+ lte->win32_file_on_disk_fp = INVALID_HANDLE_VALUE;
+ spath = NULL;
+ lte->resource_location = RESOURCE_WIN32;
+ lte->resource_entry.original_size = (uint64_t)dat->StreamSize.QuadPart;
+ lte->resource_entry.size = (uint64_t)dat->StreamSize.QuadPart;
+ copy_hash(lte->hash, hash);
+ lookup_table_insert(lookup_table, lte);
+ }
+ if (is_named_stream)
+ ads_entry->lte = lte;
+ else
+ inode->i_lte = lte;
+out_free_spath:
+ FREE(spath);
+out:
+ return ret;
+out_invalid_stream_name:
+ ERROR("Invalid stream name: \"%ls:%ls\"", path, dat->cStreamName);
+ ret = WIMLIB_ERR_READ;
+ goto out;
+}
+
+/* Scans a Win32 file for unnamed and named data streams (not reparse point
+ * streams).
+ *
+ * @path: Path to the file (UTF-16LE).
+ *
+ * @path_num_chars: Number of 2-byte characters in @path.
+ *
+ * @inode: WIM inode to save the stream into.
+ *
+ * @lookup_table: Stream lookup table for the WIM.
+ *
+ * @file_size: Size of unnamed data stream. (Used only if alternate
+ * data streams API appears to be unavailable.)
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int
+win32_capture_streams(const wchar_t *path,
+ size_t path_num_chars,
+ struct wim_inode *inode,
+ struct wim_lookup_table *lookup_table,
+ u64 file_size)