archive/*: move to archive/plugins/

src/archive/plugins/Bzip2ArchivePlugin.cxx

@@ -0,0 +1,292 @@
+/*
+ * 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.
+ */
+
+/**
+  * single bz2 archive handling (requires libbz2)
+  */
+
+#include "config.h"
+#include "Bzip2ArchivePlugin.hxx"
+#include "../ArchivePlugin.hxx"
+#include "../ArchiveFile.hxx"
+#include "../ArchiveVisitor.hxx"
+#include "InputStream.hxx"
+#include "InputPlugin.hxx"
+#include "util/RefCount.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "fs/Traits.hxx"
+
+#include <bzlib.h>
+
+#include <stddef.h>
+
+#ifdef HAVE_OLDER_BZIP2
+#define BZ2_bzDecompressInit bzDecompressInit
+#define BZ2_bzDecompress bzDecompress
+#endif
+
+class Bzip2ArchiveFile final : public ArchiveFile {
+public:
+	RefCount ref;
+
+	std::string name;
+	InputStream *const istream;
+
+	Bzip2ArchiveFile(const char *path, InputStream *_is)
+		:ArchiveFile(bz2_archive_plugin),
+		 name(PathTraitsUTF8::GetBase(path)),
+		 istream(_is) {
+		// remove .bz2 suffix
+		const size_t len = name.length();
+		if (len > 4)
+			name.erase(len - 4);
+	}
+
+	~Bzip2ArchiveFile() {
+		istream->Close();
+	}
+
+	void Ref() {
+		ref.Increment();
+	}
+
+	void Unref() {
+		if (!ref.Decrement())
+			return;
+
+		delete this;
+	}
+
+	virtual void Close() override {
+		Unref();
+	}
+
+	virtual void Visit(ArchiveVisitor &visitor) override {
+		visitor.VisitArchiveEntry(name.c_str());
+	}
+
+	virtual InputStream *OpenStream(const char *path,
+					Mutex &mutex, Cond &cond,
+					Error &error) override;
+};
+
+struct Bzip2InputStream {
+	InputStream base;
+
+	Bzip2ArchiveFile *archive;
+
+	bool eof;
+
+	bz_stream bzstream;
+
+	char buffer[5000];
+
+	Bzip2InputStream(Bzip2ArchiveFile &context, const char *uri,
+			 Mutex &mutex, Cond &cond);
+	~Bzip2InputStream();
+
+	bool Open(Error &error);
+	void Close();
+};
+
+extern const InputPlugin bz2_inputplugin;
+
+static constexpr Domain bz2_domain("bz2");
+
+/* single archive handling allocation helpers */
+
+inline bool
+Bzip2InputStream::Open(Error &error)
+{
+	bzstream.bzalloc = nullptr;
+	bzstream.bzfree = nullptr;
+	bzstream.opaque = nullptr;
+
+	bzstream.next_in = (char *)buffer;
+	bzstream.avail_in = 0;
+
+	int ret = BZ2_bzDecompressInit(&bzstream, 0, 0);
+	if (ret != BZ_OK) {
+		error.Set(bz2_domain, ret,
+			  "BZ2_bzDecompressInit() has failed");
+		return false;
+	}
+
+	base.ready = true;
+	return true;
+}
+
+inline void
+Bzip2InputStream::Close()
+{
+	BZ2_bzDecompressEnd(&bzstream);
+}
+
+/* archive open && listing routine */
+
+static ArchiveFile *
+bz2_open(const char *pathname, Error &error)
+{
+	static Mutex mutex;
+	static Cond cond;
+	InputStream *is = InputStream::OpenReady(pathname, mutex, cond, error);
+	if (is == nullptr)
+		return nullptr;
+
+	return new Bzip2ArchiveFile(pathname, is);
+}
+
+/* single archive handling */
+
+Bzip2InputStream::Bzip2InputStream(Bzip2ArchiveFile &_context, const char *uri,
+				   Mutex &mutex, Cond &cond)
+	:base(bz2_inputplugin, uri, mutex, cond),
+	 archive(&_context), eof(false)
+{
+	archive->Ref();
+}
+
+Bzip2InputStream::~Bzip2InputStream()
+{
+	archive->Unref();
+}
+
+InputStream *
+Bzip2ArchiveFile::OpenStream(const char *path,
+			     Mutex &mutex, Cond &cond,
+			     Error &error)
+{
+	Bzip2InputStream *bis = new Bzip2InputStream(*this, path, mutex, cond);
+	if (!bis->Open(error)) {
+		delete bis;
+		return nullptr;
+	}
+
+	return &bis->base;
+}
+
+static void
+bz2_is_close(InputStream *is)
+{
+	Bzip2InputStream *bis = (Bzip2InputStream *)is;
+
+	bis->Close();
+	delete bis;
+}
+
+static bool
+bz2_fillbuffer(Bzip2InputStream *bis, Error &error)
+{
+	size_t count;
+	bz_stream *bzstream;
+
+	bzstream = &bis->bzstream;
+
+	if (bzstream->avail_in > 0)
+		return true;
+
+	count = bis->archive->istream->Read(bis->buffer, sizeof(bis->buffer),
+					    error);
+	if (count == 0)
+		return false;
+
+	bzstream->next_in = bis->buffer;
+	bzstream->avail_in = count;
+	return true;
+}
+
+static size_t
+bz2_is_read(InputStream *is, void *ptr, size_t length,
+	    Error &error)
+{
+	Bzip2InputStream *bis = (Bzip2InputStream *)is;
+	bz_stream *bzstream;
+	int bz_result;
+	size_t nbytes = 0;
+
+	if (bis->eof)
+		return 0;
+
+	bzstream = &bis->bzstream;
+	bzstream->next_out = (char *)ptr;
+	bzstream->avail_out = length;
+
+	do {
+		if (!bz2_fillbuffer(bis, error))
+			return 0;
+
+		bz_result = BZ2_bzDecompress(bzstream);
+
+		if (bz_result == BZ_STREAM_END) {
+			bis->eof = true;
+			break;
+		}
+
+		if (bz_result != BZ_OK) {
+			error.Set(bz2_domain, bz_result,
+				  "BZ2_bzDecompress() has failed");
+			return 0;
+		}
+	} while (bzstream->avail_out == length);
+
+	nbytes = length - bzstream->avail_out;
+	is->offset += nbytes;
+
+	return nbytes;
+}
+
+static bool
+bz2_is_eof(InputStream *is)
+{
+	Bzip2InputStream *bis = (Bzip2InputStream *)is;
+
+	return bis->eof;
+}
+
+/* exported structures */
+
+static const char *const bz2_extensions[] = {
+	"bz2",
+	nullptr
+};
+
+const InputPlugin bz2_inputplugin = {
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	bz2_is_close,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	bz2_is_read,
+	bz2_is_eof,
+	nullptr,
+};
+
+const struct archive_plugin bz2_archive_plugin = {
+	"bz2",
+	nullptr,
+	nullptr,
+	bz2_open,
+	bz2_extensions,
+};
+

src/archive/plugins/Bzip2ArchivePlugin.hxx

@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_ARCHIVE_BZ2_HXX
+#define MPD_ARCHIVE_BZ2_HXX
+
+extern const struct archive_plugin bz2_archive_plugin;
+
+#endif

src/archive/plugins/Iso9660ArchivePlugin.cxx

@@ -0,0 +1,275 @@
+/*
+ * 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.
+ */
+
+/**
+  * iso archive handling (requires cdio, and iso9660)
+  */
+
+#include "config.h"
+#include "Iso9660ArchivePlugin.hxx"
+#include "../ArchivePlugin.hxx"
+#include "../ArchiveFile.hxx"
+#include "../ArchiveVisitor.hxx"
+#include "InputStream.hxx"
+#include "InputPlugin.hxx"
+#include "util/RefCount.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+
+#include <cdio/iso9660.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#define CEILING(x, y) ((x+(y-1))/y)
+
+class Iso9660ArchiveFile final : public ArchiveFile {
+	RefCount ref;
+
+	iso9660_t *iso;
+
+public:
+	Iso9660ArchiveFile(iso9660_t *_iso)
+		:ArchiveFile(iso9660_archive_plugin), iso(_iso) {}
+
+	~Iso9660ArchiveFile() {
+		iso9660_close(iso);
+	}
+
+	void Ref() {
+		ref.Increment();
+	}
+
+	void Unref() {
+		if (ref.Decrement())
+			delete this;
+	}
+
+	long SeekRead(void *ptr, lsn_t start, long int i_size) const {
+		return iso9660_iso_seek_read(iso, ptr, start, i_size);
+	}
+
+	void Visit(const char *path, ArchiveVisitor &visitor);
+
+	virtual void Close() override {
+		Unref();
+	}
+
+	virtual void Visit(ArchiveVisitor &visitor) override;
+
+	virtual InputStream *OpenStream(const char *path,
+					Mutex &mutex, Cond &cond,
+					Error &error) override;
+};
+
+extern const InputPlugin iso9660_input_plugin;
+
+static constexpr Domain iso9660_domain("iso9660");
+
+/* archive open && listing routine */
+
+inline void
+Iso9660ArchiveFile::Visit(const char *psz_path, ArchiveVisitor &visitor)
+{
+	CdioList_t *entlist;
+	CdioListNode_t *entnode;
+	iso9660_stat_t *statbuf;
+	char pathname[4096];
+
+	entlist = iso9660_ifs_readdir (iso, psz_path);
+	if (!entlist) {
+		return;
+	}
+	/* Iterate over the list of nodes that iso9660_ifs_readdir gives  */
+	_CDIO_LIST_FOREACH (entnode, entlist) {
+		statbuf = (iso9660_stat_t *) _cdio_list_node_data (entnode);
+
+		strcpy(pathname, psz_path);
+		strcat(pathname, statbuf->filename);
+
+		if (iso9660_stat_s::_STAT_DIR == statbuf->type ) {
+			if (strcmp(statbuf->filename, ".") && strcmp(statbuf->filename, "..")) {
+				strcat(pathname, "/");
+				Visit(pathname, visitor);
+			}
+		} else {
+			//remove leading /
+			visitor.VisitArchiveEntry(pathname + 1);
+		}
+	}
+	_cdio_list_free (entlist, true);
+}
+
+static ArchiveFile *
+iso9660_archive_open(const char *pathname, Error &error)
+{
+	/* open archive */
+	auto iso = iso9660_open(pathname);
+	if (iso == nullptr) {
+		error.Format(iso9660_domain,
+			     "Failed to open ISO9660 file %s", pathname);
+		return nullptr;
+	}
+
+	return new Iso9660ArchiveFile(iso);
+}
+
+void
+Iso9660ArchiveFile::Visit(ArchiveVisitor &visitor)
+{
+	Visit("/", visitor);
+}
+
+/* single archive handling */
+
+class Iso9660InputStream {
+	InputStream base;
+
+	Iso9660ArchiveFile &archive;
+
+	iso9660_stat_t *statbuf;
+
+public:
+	Iso9660InputStream(Iso9660ArchiveFile &_archive, const char *uri,
+			   Mutex &mutex, Cond &cond,
+			   iso9660_stat_t *_statbuf)
+		:base(iso9660_input_plugin, uri, mutex, cond),
+		 archive(_archive), statbuf(_statbuf) {
+		base.ready = true;
+		base.size = statbuf->size;
+
+		archive.Ref();
+	}
+
+	~Iso9660InputStream() {
+		free(statbuf);
+		archive.Unref();
+	}
+
+	InputStream *Get() {
+		return &base;
+	}
+
+	size_t Read(void *ptr, size_t size, Error &error);
+};
+
+InputStream *
+Iso9660ArchiveFile::OpenStream(const char *pathname,
+			       Mutex &mutex, Cond &cond,
+			       Error &error)
+{
+	auto statbuf = iso9660_ifs_stat_translate(iso, pathname);
+	if (statbuf == nullptr) {
+		error.Format(iso9660_domain,
+			     "not found in the ISO file: %s", pathname);
+		return nullptr;
+	}
+
+	Iso9660InputStream *iis =
+		new Iso9660InputStream(*this, pathname, mutex, cond,
+				       statbuf);
+	return iis->Get();
+}
+
+static void
+iso9660_input_close(InputStream *is)
+{
+	Iso9660InputStream *iis = (Iso9660InputStream *)is;
+
+	delete iis;
+}
+
+inline size_t
+Iso9660InputStream::Read(void *ptr, size_t size, Error &error)
+{
+	int readed = 0;
+	int no_blocks, cur_block;
+	size_t left_bytes = statbuf->size - base.offset;
+
+	if (left_bytes < size) {
+		no_blocks = CEILING(left_bytes,ISO_BLOCKSIZE);
+	} else {
+		no_blocks = size / ISO_BLOCKSIZE;
+	}
+
+	if (no_blocks == 0)
+		return 0;
+
+	cur_block = base.offset / ISO_BLOCKSIZE;
+
+	readed = archive.SeekRead(ptr, statbuf->lsn + cur_block,
+				  no_blocks);
+
+	if (readed != no_blocks * ISO_BLOCKSIZE) {
+		error.Format(iso9660_domain,
+			     "error reading ISO file at lsn %lu",
+			     (unsigned long)cur_block);
+		return 0;
+	}
+	if (left_bytes < size) {
+		readed = left_bytes;
+	}
+
+	base.offset += readed;
+	return readed;
+}
+
+static size_t
+iso9660_input_read(InputStream *is, void *ptr, size_t size,
+		   Error &error)
+{
+	Iso9660InputStream *iis = (Iso9660InputStream *)is;
+	return iis->Read(ptr, size, error);
+}
+
+static bool
+iso9660_input_eof(InputStream *is)
+{
+	return is->offset == is->size;
+}
+
+/* exported structures */
+
+static const char *const iso9660_archive_extensions[] = {
+	"iso",
+	nullptr
+};
+
+const InputPlugin iso9660_input_plugin = {
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	iso9660_input_close,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	iso9660_input_read,
+	iso9660_input_eof,
+	nullptr,
+};
+
+const struct archive_plugin iso9660_archive_plugin = {
+	"iso",
+	nullptr,
+	nullptr,
+	iso9660_archive_open,
+	iso9660_archive_extensions,
+};

src/archive/plugins/Iso9660ArchivePlugin.hxx

@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_ARCHIVE_ISO9660_HXX
+#define MPD_ARCHIVE_ISO9660_HXX
+
+extern const struct archive_plugin iso9660_archive_plugin;
+
+#endif

src/archive/plugins/ZzipArchivePlugin.cxx

@@ -0,0 +1,223 @@
+/*
+ * 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.
+ */
+
+/**
+  * zip archive handling (requires zziplib)
+  */
+
+#include "config.h"
+#include "ZzipArchivePlugin.hxx"
+#include "../ArchivePlugin.hxx"
+#include "../ArchiveFile.hxx"
+#include "../ArchiveVisitor.hxx"
+#include "InputStream.hxx"
+#include "InputPlugin.hxx"
+#include "util/RefCount.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+
+#include <zzip/zzip.h>
+
+class ZzipArchiveFile final : public ArchiveFile {
+public:
+	RefCount ref;
+
+	ZZIP_DIR *const dir;
+
+	ZzipArchiveFile(ZZIP_DIR *_dir)
+		:ArchiveFile(zzip_archive_plugin), dir(_dir) {}
+
+	~ZzipArchiveFile() {
+		zzip_dir_close(dir);
+	}
+
+	void Unref() {
+		if (ref.Decrement())
+			delete this;
+	}
+
+	virtual void Close() override {
+		Unref();
+	}
+
+	virtual void Visit(ArchiveVisitor &visitor) override;
+
+	virtual InputStream *OpenStream(const char *path,
+					Mutex &mutex, Cond &cond,
+					Error &error) override;
+};
+
+extern const InputPlugin zzip_input_plugin;
+
+static constexpr Domain zzip_domain("zzip");
+
+/* archive open && listing routine */
+
+static ArchiveFile *
+zzip_archive_open(const char *pathname, Error &error)
+{
+	ZZIP_DIR *dir = zzip_dir_open(pathname, nullptr);
+	if (dir == nullptr) {
+		error.Format(zzip_domain, "Failed to open ZIP file %s",
+			     pathname);
+		return nullptr;
+	}
+
+	return new ZzipArchiveFile(dir);
+}
+
+inline void
+ZzipArchiveFile::Visit(ArchiveVisitor &visitor)
+{
+	zzip_rewinddir(dir);
+
+	ZZIP_DIRENT dirent;
+	while (zzip_dir_read(dir, &dirent))
+		//add only files
+		if (dirent.st_size > 0)
+			visitor.VisitArchiveEntry(dirent.d_name);
+}
+
+/* single archive handling */
+
+struct ZzipInputStream {
+	InputStream base;
+
+	ZzipArchiveFile *archive;
+
+	ZZIP_FILE *file;
+
+	ZzipInputStream(ZzipArchiveFile &_archive, const char *uri,
+			Mutex &mutex, Cond &cond,
+			ZZIP_FILE *_file)
+		:base(zzip_input_plugin, uri, mutex, cond),
+		 archive(&_archive), file(_file) {
+		base.ready = true;
+		//we are seekable (but its not recommendent to do so)
+		base.seekable = true;
+
+		ZZIP_STAT z_stat;
+		zzip_file_stat(file, &z_stat);
+		base.size = z_stat.st_size;
+
+		archive->ref.Increment();
+	}
+
+	~ZzipInputStream() {
+		zzip_file_close(file);
+		archive->Unref();
+	}
+};
+
+InputStream *
+ZzipArchiveFile::OpenStream(const char *pathname,
+			    Mutex &mutex, Cond &cond,
+			    Error &error)
+{
+	ZZIP_FILE *_file = zzip_file_open(dir, pathname, 0);
+	if (_file == nullptr) {
+		error.Format(zzip_domain, "not found in the ZIP file: %s",
+			     pathname);
+		return nullptr;
+	}
+
+	ZzipInputStream *zis =
+		new ZzipInputStream(*this, pathname,
+				    mutex, cond,
+				    _file);
+	return &zis->base;
+}
+
+static void
+zzip_input_close(InputStream *is)
+{
+	ZzipInputStream *zis = (ZzipInputStream *)is;
+
+	delete zis;
+}
+
+static size_t
+zzip_input_read(InputStream *is, void *ptr, size_t size,
+		Error &error)
+{
+	ZzipInputStream *zis = (ZzipInputStream *)is;
+	int ret;
+
+	ret = zzip_file_read(zis->file, ptr, size);
+	if (ret < 0) {
+		error.Set(zzip_domain, "zzip_file_read() has failed");
+		return 0;
+	}
+
+	is->offset = zzip_tell(zis->file);
+
+	return ret;
+}
+
+static bool
+zzip_input_eof(InputStream *is)
+{
+	ZzipInputStream *zis = (ZzipInputStream *)is;
+
+	return (InputPlugin::offset_type)zzip_tell(zis->file) == is->size;
+}
+
+static bool
+zzip_input_seek(InputStream *is, InputPlugin::offset_type offset,
+		int whence, Error &error)
+{
+	ZzipInputStream *zis = (ZzipInputStream *)is;
+	zzip_off_t ofs = zzip_seek(zis->file, offset, whence);
+	if (ofs != -1) {
+		error.Set(zzip_domain, "zzip_seek() has failed");
+		is->offset = ofs;
+		return true;
+	}
+	return false;
+}
+
+/* exported structures */
+
+static const char *const zzip_archive_extensions[] = {
+	"zip",
+	nullptr
+};
+
+const InputPlugin zzip_input_plugin = {
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	zzip_input_close,
+	nullptr,
+	nullptr,
+	nullptr,
+	nullptr,
+	zzip_input_read,
+	zzip_input_eof,
+	zzip_input_seek,
+};
+
+const struct archive_plugin zzip_archive_plugin = {
+	"zzip",
+	nullptr,
+	nullptr,
+	zzip_archive_open,
+	zzip_archive_extensions,
+};

src/archive/plugins/ZzipArchivePlugin.hxx

@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_ARCHIVE_ZZIP_HXX
+#define MPD_ARCHIVE_ZZIP_HXX
+
+extern const struct archive_plugin zzip_archive_plugin;
+
+#endif