Database*: move to db/

1 files changed, 0 insertions, 484 deletions

diff --git a/src/update/UpdateWalk.cxx b/src/update/UpdateWalk.cxx
deleted file mode 100644
index 21754b31d..000000000
--- a/src/update/UpdateWalk.cxx
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * Copyright (C) 2003-2014 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h" /* must be first for large file support */
-#include "UpdateWalk.hxx"
-#include "UpdateIO.hxx"
-#include "UpdateDatabase.hxx"
-#include "UpdateSong.hxx"
-#include "UpdateArchive.hxx"
-#include "UpdateDomain.hxx"
-#include "DatabaseLock.hxx"
-#include "DatabaseSimple.hxx"
-#include "Directory.hxx"
-#include "Song.hxx"
-#include "PlaylistVector.hxx"
-#include "playlist/PlaylistRegistry.hxx"
-#include "Mapper.hxx"
-#include "ExcludeList.hxx"
-#include "config/ConfigGlobal.hxx"
-#include "config/ConfigOption.hxx"
-#include "fs/AllocatedPath.hxx"
-#include "fs/Traits.hxx"
-#include "fs/FileSystem.hxx"
-#include "fs/DirectoryReader.hxx"
-#include "util/Alloc.hxx"
-#include "util/UriUtil.hxx"
-#include "Log.hxx"
-
-#include <assert.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-
-bool walk_discard;
-bool modified;
-
-#ifndef WIN32
-
-static constexpr bool DEFAULT_FOLLOW_INSIDE_SYMLINKS = true;
-static constexpr bool DEFAULT_FOLLOW_OUTSIDE_SYMLINKS = true;
-
-static bool follow_inside_symlinks;
-static bool follow_outside_symlinks;
-
-#endif
-
-void
-update_walk_global_init(void)
-{
-#ifndef WIN32
-	follow_inside_symlinks =
-		config_get_bool(CONF_FOLLOW_INSIDE_SYMLINKS,
-				DEFAULT_FOLLOW_INSIDE_SYMLINKS);
-
-	follow_outside_symlinks =
-		config_get_bool(CONF_FOLLOW_OUTSIDE_SYMLINKS,
-				DEFAULT_FOLLOW_OUTSIDE_SYMLINKS);
-#endif
-}
-
-void
-update_walk_global_finish(void)
-{
-}
-
-static void
-directory_set_stat(Directory &dir, const struct stat *st)
-{
-	dir.inode = st->st_ino;
-	dir.device = st->st_dev;
-	dir.have_stat = true;
-}
-
-static void
-remove_excluded_from_directory(Directory &directory,
-			       const ExcludeList &exclude_list)
-{
-	db_lock();
-
-	Directory *child, *n;
-	directory_for_each_child_safe(child, n, directory) {
-		const auto name_fs = AllocatedPath::FromUTF8(child->GetName());
-
-		if (name_fs.IsNull() || exclude_list.Check(name_fs)) {
-			delete_directory(child);
-			modified = true;
-		}
-	}
-
-	Song *song, *ns;
-	directory_for_each_song_safe(song, ns, directory) {
-		assert(song->parent == &directory);
-
-		const auto name_fs = AllocatedPath::FromUTF8(song->uri);
-		if (name_fs.IsNull() || exclude_list.Check(name_fs)) {
-			delete_song(directory, song);
-			modified = true;
-		}
-	}
-
-	db_unlock();
-}
-
-static void
-purge_deleted_from_directory(Directory &directory)
-{
-	Directory *child, *n;
-	directory_for_each_child_safe(child, n, directory) {
-		if (directory_exists(*child))
-			continue;
-
-		db_lock();
-		delete_directory(child);
-		db_unlock();
-
-		modified = true;
-	}
-
-	Song *song, *ns;
-	directory_for_each_song_safe(song, ns, directory) {
-		const auto path = map_song_fs(*song);
-		if (path.IsNull() || !FileExists(path)) {
-			db_lock();
-			delete_song(directory, song);
-			db_unlock();
-
-			modified = true;
-		}
-	}
-
-	for (auto i = directory.playlists.begin(),
-		     end = directory.playlists.end();
-	     i != end;) {
-		if (!directory_child_is_regular(directory, i->name.c_str())) {
-			db_lock();
-			i = directory.playlists.erase(i);
-			db_unlock();
-		} else
-			++i;
-	}
-}
-
-#ifndef WIN32
-static int
-update_directory_stat(Directory &directory)
-{
-	struct stat st;
-	if (stat_directory(directory, &st) < 0)
-		return -1;
-
-	directory_set_stat(directory, &st);
-	return 0;
-}
-#endif
-
-static int
-find_inode_ancestor(Directory *parent, ino_t inode, dev_t device)
-{
-#ifndef WIN32
-	while (parent) {
-		if (!parent->have_stat && update_directory_stat(*parent) < 0)
-			return -1;
-
-		if (parent->inode == inode && parent->device == device) {
-			LogDebug(update_domain, "recursive directory found");
-			return 1;
-		}
-
-		parent = parent->parent;
-	}
-#else
-	(void)parent;
-	(void)inode;
-	(void)device;
-#endif
-
-	return 0;
-}
-
-static bool
-update_playlist_file2(Directory &directory,
-		      const char *name, const char *suffix,
-		      const struct stat *st)
-{
-	if (!playlist_suffix_supported(suffix))
-		return false;
-
-	PlaylistInfo pi(name, st->st_mtime);
-
-	db_lock();
-	if (directory.playlists.UpdateOrInsert(std::move(pi)))
-		modified = true;
-	db_unlock();
-	return true;
-}
-
-static bool
-update_regular_file(Directory &directory,
-		    const char *name, const struct stat *st)
-{
-	const char *suffix = uri_get_suffix(name);
-	if (suffix == nullptr)
-		return false;
-
-	return update_song_file(directory, name, suffix, st) ||
-		update_archive_file(directory, name, suffix, st) ||
-		update_playlist_file2(directory, name, suffix, st);
-}
-
-static bool
-update_directory(Directory &directory, const struct stat *st);
-
-static void
-update_directory_child(Directory &directory,
-		       const char *name, const struct stat *st)
-{
-	assert(strchr(name, '/') == nullptr);
-
-	if (S_ISREG(st->st_mode)) {
-		update_regular_file(directory, name, st);
-	} else if (S_ISDIR(st->st_mode)) {
-		if (find_inode_ancestor(&directory, st->st_ino, st->st_dev))
-			return;
-
-		db_lock();
-		Directory *subdir = directory.MakeChild(name);
-		db_unlock();
-
-		assert(&directory == subdir->parent);
-
-		if (!update_directory(*subdir, st)) {
-			db_lock();
-			delete_directory(subdir);
-			db_unlock();
-		}
-	} else {
-		FormatDebug(update_domain,
-			    "%s is not a directory, archive or music", name);
-	}
-}
-
-/* we don't look at "." / ".." nor files with newlines in their name */
-gcc_pure
-static bool skip_path(Path path_fs)
-{
-	const char *path = path_fs.c_str();
-	return (path[0] == '.' && path[1] == 0) ||
-		(path[0] == '.' && path[1] == '.' && path[2] == 0) ||
-		strchr(path, '\n') != nullptr;
-}
-
-gcc_pure
-static bool
-skip_symlink(const Directory *directory, const char *utf8_name)
-{
-#ifndef WIN32
-	const auto path_fs = map_directory_child_fs(*directory, utf8_name);
-	if (path_fs.IsNull())
-		return true;
-
-	const auto target = ReadLink(path_fs);
-	if (target.IsNull())
-		/* don't skip if this is not a symlink */
-		return errno != EINVAL;
-
-	if (!follow_inside_symlinks && !follow_outside_symlinks) {
-		/* ignore all symlinks */
-		return true;
-	} else if (follow_inside_symlinks && follow_outside_symlinks) {
-		/* consider all symlinks */
-		return false;
-	}
-
-	const char *target_str = target.c_str();
-
-	if (PathTraitsFS::IsAbsolute(target_str)) {
-		/* if the symlink points to an absolute path, see if
-		   that path is inside the music directory */
-		const char *relative = map_to_relative_path(target_str);
-		return relative > target_str
-			? !follow_inside_symlinks
-			: !follow_outside_symlinks;
-	}
-
-	const char *p = target_str;
-	while (*p == '.') {
-		if (p[1] == '.' && PathTraitsFS::IsSeparator(p[2])) {
-			/* "../" moves to parent directory */
-			directory = directory->parent;
-			if (directory == nullptr) {
-				/* we have moved outside the music
-				   directory - skip this symlink
-				   if such symlinks are not allowed */
-				return !follow_outside_symlinks;
-			}
-			p += 3;
-		} else if (PathTraitsFS::IsSeparator(p[1]))
-			/* eliminate "./" */
-			p += 2;
-		else
-			break;
-	}
-
-	/* we are still in the music directory, so this symlink points
-	   to a song which is already in the database - skip according
-	   to the follow_inside_symlinks param*/
-	return !follow_inside_symlinks;
-#else
-	/* no symlink checking on WIN32 */
-
-	(void)directory;
-	(void)utf8_name;
-
-	return false;
-#endif
-}
-
-static bool
-update_directory(Directory &directory, const struct stat *st)
-{
-	assert(S_ISDIR(st->st_mode));
-
-	directory_set_stat(directory, st);
-
-	const auto path_fs = map_directory_fs(directory);
-	if (path_fs.IsNull())
-		return false;
-
-	DirectoryReader reader(path_fs);
-	if (reader.HasFailed()) {
-		int error = errno;
-		const auto path_utf8 = path_fs.ToUTF8();
-		FormatErrno(update_domain, error,
-			    "Failed to open directory %s",
-			    path_utf8.c_str());
-		return false;
-	}
-
-	ExcludeList exclude_list;
-	exclude_list.LoadFile(AllocatedPath::Build(path_fs, ".mpdignore"));
-
-	if (!exclude_list.IsEmpty())
-		remove_excluded_from_directory(directory, exclude_list);
-
-	purge_deleted_from_directory(directory);
-
-	while (reader.ReadEntry()) {
-		std::string utf8;
-		struct stat st2;
-
-		const auto entry = reader.GetEntry();
-
-		if (skip_path(entry) || exclude_list.Check(entry))
-			continue;
-
-		utf8 = entry.ToUTF8();
-		if (utf8.empty())
-			continue;
-
-		if (skip_symlink(&directory, utf8.c_str())) {
-			modified |= delete_name_in(directory, utf8.c_str());
-			continue;
-		}
-
-		if (stat_directory_child(directory, utf8.c_str(), &st2) == 0)
-			update_directory_child(directory, utf8.c_str(), &st2);
-		else
-			modified |= delete_name_in(directory, utf8.c_str());
-	}
-
-	directory.mtime = st->st_mtime;
-
-	return true;
-}
-
-static Directory *
-directory_make_child_checked(Directory &parent, const char *name_utf8)
-{
-	db_lock();
-	Directory *directory = parent.FindChild(name_utf8);
-	db_unlock();
-
-	if (directory != nullptr)
-		return directory;
-
-	struct stat st;
-	if (stat_directory_child(parent, name_utf8, &st) < 0 ||
-	    find_inode_ancestor(&parent, st.st_ino, st.st_dev))
-		return nullptr;
-
-	if (skip_symlink(&parent, name_utf8))
-		return nullptr;
-
-	/* if we're adding directory paths, make sure to delete filenames
-	   with potentially the same name */
-	db_lock();
-	Song *conflicting = parent.FindSong(name_utf8);
-	if (conflicting)
-		delete_song(parent, conflicting);
-
-	directory = parent.CreateChild(name_utf8);
-	db_unlock();
-
-	directory_set_stat(*directory, &st);
-	return directory;
-}
-
-static Directory *
-directory_make_uri_parent_checked(const char *uri)
-{
-	Directory *directory = db_get_root();
-	char *duplicated = xstrdup(uri);
-	char *name_utf8 = duplicated, *slash;
-
-	while ((slash = strchr(name_utf8, '/')) != nullptr) {
-		*slash = 0;
-
-		if (*name_utf8 == 0)
-			continue;
-
-		directory = directory_make_child_checked(*directory,
-							 name_utf8);
-		if (directory == nullptr)
-			break;
-
-		name_utf8 = slash + 1;
-	}
-
-	free(duplicated);
-	return directory;
-}
-
-static void
-update_uri(const char *uri)
-{
-	Directory *parent = directory_make_uri_parent_checked(uri);
-	if (parent == nullptr)
-		return;
-
-	const char *name = PathTraitsUTF8::GetBase(uri);
-
-	struct stat st;
-	if (!skip_symlink(parent, name) &&
-	    stat_directory_child(*parent, name, &st) == 0)
-		update_directory_child(*parent, name, &st);
-	else
-		modified |= delete_name_in(*parent, name);
-}
-
-bool
-update_walk(const char *path, bool discard)
-{
-	walk_discard = discard;
-	modified = false;
-
-	if (path != nullptr && !isRootDirectory(path)) {
-		update_uri(path);
-	} else {
-		Directory *directory = db_get_root();
-		struct stat st;
-
-		if (stat_directory(*directory, &st) == 0)
-			update_directory(*directory, &st);
-	}
-
-	return modified;
-}