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// Copyright (C) 2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <cc/data.h>
#include <cc/dhcp_config_error.h>
#include <hooks/hooks_parser.h>
#include <boost/algorithm/string.hpp>
#include <boost/foreach.hpp>
#include <util/strutil.h>
#include <vector>
using namespace std;
using namespace isc::data;
using namespace isc::hooks;
using namespace isc::dhcp;
namespace isc {
namespace hooks {
// @todo use the flat style, split into list and item
void
HooksLibrariesParser::parse(HooksConfig& libraries, ConstElementPtr value) {
// Initialize.
libraries.clear();
if (!value) {
isc_throw(DhcpConfigError, "Tried to parse null hooks libraries");
}
// This is the new syntax. Iterate through it and get each map.
BOOST_FOREACH(ConstElementPtr library_entry, value->listValue()) {
ConstElementPtr parameters;
// Is it a map?
if (library_entry->getType() != Element::map) {
isc_throw(DhcpConfigError, "hooks library configuration error:"
" one or more entries in the hooks-libraries list is not"
" a map (" << library_entry->getPosition() << ")");
}
// Iterate through each element in the map. We check
// whether we have found a library element.
bool lib_found = false;
string libname = "";
// Let's explicitly reset the parameters, so we won't cover old
// values from the previous loop round.
parameters.reset();
BOOST_FOREACH(auto entry_item, library_entry->mapValue()) {
if (entry_item.first == "library") {
if (entry_item.second->getType() != Element::string) {
isc_throw(DhcpConfigError, "hooks library configuration"
" error: value of 'library' element is not a string"
" giving the path to a hooks library (" <<
entry_item.second->getPosition() << ")");
}
// Get the name of the library and add it to the list after
// removing quotes.
libname = (entry_item.second)->stringValue();
// Remove leading/trailing quotes and any leading/trailing
// spaces.
boost::erase_all(libname, "\"");
libname = isc::util::str::trim(libname);
if (libname.empty()) {
isc_throw(DhcpConfigError, "hooks library configuration"
" error: value of 'library' element must not be"
" blank (" <<
entry_item.second->getPosition() << ")");
}
// Note we have found the library name.
lib_found = true;
continue;
}
// If there are parameters, let's remember them.
if (entry_item.first == "parameters") {
parameters = entry_item.second;
continue;
}
// For all other parameters we will throw.
isc_throw(DhcpConfigError, "unknown hooks library parameter: "
<< entry_item.first << "("
<< library_entry->getPosition() << ")");
}
if (! lib_found) {
isc_throw(DhcpConfigError, "hooks library configuration error:"
" one or more hooks-libraries elements are missing the"
" name of the library" <<
" (" << library_entry->getPosition() << ")");
}
libraries.add(libname, parameters);
}
}
}
}
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