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/*
Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "package_base.h"
#include "compose.hpp"
#include "exceptions.h"
#include "util.h"
#include "dcp_assert.h"
#include "font_asset.h"
#include "raw_convert.h"
#include "certificate_chain.h"
#include <libcxml/cxml.h>
#include <libxml++/libxml++.h>
#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
using std::list;
using std::map;
using std::string;
using boost::shared_ptr;
using boost::algorithm::starts_with;
using namespace dcp;
PackageBase::PackageBase (boost::filesystem::path directory)
{
if (!boost::filesystem::exists (directory)) {
boost::filesystem::create_directories (directory);
}
_directory = boost::filesystem::canonical (directory);
}
list<shared_ptr<Asset> >
PackageBase::read_assetmap (bool keep_going, ReadErrors* errors) const
{
boost::filesystem::path asset_map_file;
if (boost::filesystem::exists (_directory / "ASSETMAP")) {
asset_map_file = _directory / "ASSETMAP";
} else if (boost::filesystem::exists (_directory / "ASSETMAP.xml")) {
asset_map_file = _directory / "ASSETMAP.xml";
} else {
boost::throw_exception (PackageReadError (String::compose ("could not find AssetMap file in `%1'", _directory.string())));
}
cxml::Document asset_map ("AssetMap");
asset_map.read_file (asset_map_file);
list<shared_ptr<cxml::Node> > asset_nodes = asset_map.node_child("AssetList")->node_children ("Asset");
map<string, boost::filesystem::path> paths;
BOOST_FOREACH (shared_ptr<cxml::Node> i, asset_nodes) {
if (i->node_child("ChunkList")->node_children("Chunk").size() != 1) {
boost::throw_exception (XMLError ("unsupported asset chunk count"));
}
string p = i->node_child("ChunkList")->node_child("Chunk")->string_child ("Path");
if (starts_with (p, "file://")) {
p = p.substr (7);
}
paths.insert (make_pair (remove_urn_uuid (i->string_child ("Id")), p));
}
/* Read all the assets from the asset map */
/* XXX: I think we should be looking at the PKL here to decide type, not
the extension of the file.
*/
list<shared_ptr<Asset> > assets;
for (map<string, boost::filesystem::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
boost::filesystem::path path = _directory / i->second;
if (!boost::filesystem::exists (path)) {
if (keep_going) {
if (errors) {
errors->push_back (shared_ptr<MissingAssetError> (new MissingAssetError (path)));
}
} else {
throw MissingAssetError (path);
}
continue;
}
if (boost::filesystem::extension(path) == ".xml") {
xmlpp::DomParser* p = new xmlpp::DomParser;
try {
p->parse_file (path.string());
} catch (std::exception& e) {
delete p;
continue;
}
string const root = p->get_document()->get_root_node()->get_name ();
delete p;
shared_ptr<Asset> a = xml_asset_factory (path, root);
if (a) {
assets.push_back (a);
}
} else if (boost::filesystem::extension (path) == ".mxf") {
assets.push_back (mxf_asset_factory (path));
} else if (boost::filesystem::extension (path) == ".ttf") {
assets.push_back (shared_ptr<FontAsset> (new FontAsset (i->first, path)));
}
}
return assets;
}
/** Write the VOLINDEX file.
* @param standard DCP standard to use (INTEROP or SMPTE)
*/
void
PackageBase::write_volindex (Standard standard) const
{
boost::filesystem::path p = _directory;
switch (standard) {
case DCP_INTEROP:
p /= "VOLINDEX";
break;
case DCP_SMPTE:
p /= "VOLINDEX.xml";
break;
case IMP:
/* XXX */
DCP_ASSERT (false);
break;
}
xmlpp::Document doc;
xmlpp::Element* root = 0;
switch (standard) {
case DCP_INTEROP:
root = doc.create_root_node ("VolumeIndex", "http://www.digicine.com/PROTO-ASDCP-AM-20040311#");
break;
case DCP_SMPTE:
case IMP:
root = doc.create_root_node ("VolumeIndex", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
break;
}
root->add_child("Index")->add_child_text ("1");
doc.write_to_file (p.string (), "UTF-8");
}
void
PackageBase::write_assetmap (Standard standard, string pkl_uuid, int pkl_length, dcp::XMLMetadata metadata) const
{
boost::filesystem::path p = _directory;
switch (standard) {
case DCP_INTEROP:
p /= "ASSETMAP";
break;
case DCP_SMPTE:
case IMP:
p /= "ASSETMAP.xml";
break;
}
xmlpp::Document doc;
xmlpp::Element* root = 0;
switch (standard) {
case DCP_INTEROP:
root = doc.create_root_node ("AssetMap", "http://www.digicine.com/PROTO-ASDCP-AM-20040311#");
break;
case DCP_SMPTE:
case IMP:
root = doc.create_root_node ("AssetMap", "http://www.smpte-ra.org/schemas/429-9/2007/AM");
break;
}
root->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
root->add_child("AnnotationText")->add_child_text ("Created by " + metadata.creator);
switch (standard) {
case DCP_INTEROP:
root->add_child("VolumeCount")->add_child_text ("1");
root->add_child("IssueDate")->add_child_text (metadata.issue_date);
root->add_child("Issuer")->add_child_text (metadata.issuer);
root->add_child("Creator")->add_child_text (metadata.creator);
break;
case DCP_SMPTE:
case IMP:
root->add_child("Creator")->add_child_text (metadata.creator);
root->add_child("VolumeCount")->add_child_text ("1");
root->add_child("IssueDate")->add_child_text (metadata.issue_date);
root->add_child("Issuer")->add_child_text (metadata.issuer);
break;
}
xmlpp::Node* asset_list = root->add_child ("AssetList");
xmlpp::Node* asset = asset_list->add_child ("Asset");
asset->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
asset->add_child("PackingList")->add_child_text ("true");
xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
chunk->add_child("Path")->add_child_text ("pkl_" + pkl_uuid + ".xml");
chunk->add_child("VolumeIndex")->add_child_text ("1");
chunk->add_child("Offset")->add_child_text ("0");
chunk->add_child("Length")->add_child_text (raw_convert<string> (pkl_length));
BOOST_FOREACH (shared_ptr<dcp::Asset> i, assets ()) {
i->write_to_assetmap (asset_list, _directory);
}
/* This must not be the _formatted version otherwise signature digests will be wrong */
doc.write_to_file (p.string (), "UTF-8");
}
boost::filesystem::path
PackageBase::write_pkl (dcp::Standard standard, string pkl_uuid, dcp::XMLMetadata metadata, shared_ptr<const CertificateChain> signer) const
{
boost::filesystem::path p = _directory;
p /= String::compose ("pkl_%1.xml", pkl_uuid);
xmlpp::Document doc;
xmlpp::Element* pkl;
if (standard == DCP_INTEROP) {
pkl = doc.create_root_node("PackingList", "http://www.digicine.com/PROTO-ASDCP-PKL-20040311#");
} else {
pkl = doc.create_root_node("PackingList", "http://www.smpte-ra.org/schemas/429-8/2007/PKL");
}
if (signer) {
pkl->set_namespace_declaration ("http://www.w3.org/2000/09/xmldsig#", "dsig");
}
pkl->add_child("Id")->add_child_text ("urn:uuid:" + pkl_uuid);
pkl->add_child("AnnotationText")->add_child_text (pkl_annotation_text ());
pkl->add_child("IssueDate")->add_child_text (metadata.issue_date);
pkl->add_child("Issuer")->add_child_text (metadata.issuer);
pkl->add_child("Creator")->add_child_text (metadata.creator);
xmlpp::Element* asset_list = pkl->add_child("AssetList");
BOOST_FOREACH (shared_ptr<dcp::Asset> i, assets ()) {
i->write_to_pkl (asset_list, _directory, standard);
}
if (signer) {
signer->sign (pkl, standard);
}
doc.write_to_file (p.string (), "UTF-8");
return p.string ();
}
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