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-rw-r--r--src/archive/plugins/Iso9660ArchivePlugin.cxx238
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diff --git a/src/archive/plugins/Iso9660ArchivePlugin.cxx b/src/archive/plugins/Iso9660ArchivePlugin.cxx
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+++ b/src/archive/plugins/Iso9660ArchivePlugin.cxx
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+/*
+ * 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 "input/InputStream.hxx"
+#include "input/InputPlugin.hxx"
+#include "fs/Path.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;
+};
+
+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(Path pathname, Error &error)
+{
+ /* open archive */
+ auto iso = iso9660_open(pathname.c_str());
+ if (iso == nullptr) {
+ error.Format(iso9660_domain,
+ "Failed to open ISO9660 file %s",
+ pathname.c_str());
+ return nullptr;
+ }
+
+ return new Iso9660ArchiveFile(iso);
+}
+
+void
+Iso9660ArchiveFile::Visit(ArchiveVisitor &visitor)
+{
+ Visit("/", visitor);
+}
+
+/* single archive handling */
+
+class Iso9660InputStream final : public InputStream {
+ Iso9660ArchiveFile &archive;
+
+ iso9660_stat_t *statbuf;
+
+public:
+ Iso9660InputStream(Iso9660ArchiveFile &_archive, const char *_uri,
+ Mutex &_mutex, Cond &_cond,
+ iso9660_stat_t *_statbuf)
+ :InputStream(_uri, _mutex, _cond),
+ archive(_archive), statbuf(_statbuf) {
+ size = statbuf->size;
+ SetReady();
+
+ archive.Ref();
+ }
+
+ ~Iso9660InputStream() {
+ free(statbuf);
+ archive.Unref();
+ }
+
+ /* virtual methods from InputStream */
+ bool IsEOF() override;
+ size_t Read(void *ptr, size_t size, Error &error) override;
+};
+
+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;
+ }
+
+ return new Iso9660InputStream(*this, pathname, mutex, cond,
+ statbuf);
+}
+
+size_t
+Iso9660InputStream::Read(void *ptr, size_t read_size, Error &error)
+{
+ int readed = 0;
+ int no_blocks, cur_block;
+ size_t left_bytes = statbuf->size - offset;
+
+ if (left_bytes < read_size) {
+ no_blocks = CEILING(left_bytes, ISO_BLOCKSIZE);
+ } else {
+ no_blocks = read_size / ISO_BLOCKSIZE;
+ }
+
+ if (no_blocks == 0)
+ return 0;
+
+ cur_block = 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 < read_size) {
+ readed = left_bytes;
+ }
+
+ offset += readed;
+ return readed;
+}
+
+bool
+Iso9660InputStream::IsEOF()
+{
+ return offset == size;
+}
+
+/* exported structures */
+
+static const char *const iso9660_archive_extensions[] = {
+ "iso",
+ nullptr
+};
+
+const ArchivePlugin iso9660_archive_plugin = {
+ "iso",
+ nullptr,
+ nullptr,
+ iso9660_archive_open,
+ iso9660_archive_extensions,
+};