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// Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#include <dhcp/libdhcp++.h>
#include <dhcp/option_definition.h>
#include <dhcp/option_space.h>
#include <dhcpsrv/cfg_option_def.h>
namespace isc {
namespace dhcp {
void
CfgOptionDef::copyTo(CfgOptionDef& new_config) const {
const std::list<std::string>& names =
option_definitions_.getOptionSpaceNames();
for (std::list<std::string>::const_iterator name = names.begin();
name != names.end(); ++name) {
OptionDefContainerPtr defs = getAll(*name);
for (OptionDefContainer::const_iterator def = defs->begin();
def != defs->end(); ++def) {
OptionDefinitionPtr new_def =
OptionDefinitionPtr(new OptionDefinition(**def));
new_config.add(new_def, *name);
}
}
}
bool
CfgOptionDef::equals(const CfgOptionDef& other) const {
// Get our option space names.
const std::list<std::string>& names = option_definitions_.getOptionSpaceNames();
// Get option space names held by the other object.
const std::list<std::string>&
other_names = other.option_definitions_.getOptionSpaceNames();
// Compareg that sizes are the same. If they hold different number of
// option space names the objects are not equal.
if (names.size() != other_names.size()) {
return (false);
}
// Iterate over all option space names and get the definitions for each
// of them.
for (std::list<std::string>::const_iterator name = names.begin();
name != names.end(); ++name) {
// Get all definitions.
OptionDefContainerPtr defs = getAll(*name);
OptionDefContainerPtr other_defs = other.getAll(*name);
// Compare sizes. If they hold different number of definitions,
// they are unequal.
if (defs->size() != defs->size()) {
return (false);
}
// For each option definition, try to find one in the other object.
for (OptionDefContainer::const_iterator def = defs->begin();
def != defs->end(); ++def) {
OptionDefinitionPtr
other_def = other.get(*name, (*def)->getCode());
// Actually compare them.
if (!other_def || (*other_def != **def)) {
return (false);
}
}
}
// All checks passed.
return (true);
}
void
CfgOptionDef::add(const OptionDefinitionPtr& def,
const std::string& option_space) {
if (!OptionSpace::validateName(option_space)) {
isc_throw(BadValue, "invalid option space name '"
<< option_space << "'");
// Option definition being added must be a valid pointer.
} else if (!def) {
isc_throw(MalformedOptionDefinition,
"option definition must not be NULL");
// Must not duplicate an option definition.
} else if (get(option_space, def->getCode())) {
isc_throw(DuplicateOptionDefinition, "option definition with code '"
<< def->getCode() << "' already exists in option"
" space '" << option_space << "'");
// Must not override standard option definition.
} else if (((option_space == DHCP4_OPTION_SPACE) &&
LibDHCP::isStandardOption(Option::V4, def->getCode()) &&
LibDHCP::getOptionDef(Option::V4, def->getCode())) ||
((option_space == DHCP6_OPTION_SPACE) &&
LibDHCP::isStandardOption(Option::V6, def->getCode()) &&
LibDHCP::getOptionDef(Option::V6, def->getCode()))) {
isc_throw(BadValue, "unable to override definition of option '"
<< def->getCode() << "' in standard option space '"
<< option_space << "'");
}
// Add the definition.
option_definitions_.addItem(def, option_space);
}
OptionDefContainerPtr
CfgOptionDef::getAll(const std::string& option_space) const {
/// @todo Does option space require any validation here?
return (option_definitions_.getItems(option_space));
}
OptionDefinitionPtr
CfgOptionDef::get(const std::string& option_space,
const uint16_t option_code) const {
// Get the pointer to collection of the option definitions that belong
// to the particular option space.
OptionDefContainerPtr defs = getAll(option_space);
// If there are any option definitions for this option space, get the
// one that has the specified option code.
if (defs && !defs->empty()) {
const OptionDefContainerTypeIndex& idx = defs->get<1>();
const OptionDefContainerTypeRange& range = idx.equal_range(option_code);
// If there is more than one definition matching the option code,
// return the first one. In fact, it shouldn't happen that we have
// more than one because we check for duplicates when we add them.
if (std::distance(range.first, range.second) > 0) {
return (*range.first);
}
}
// Nothing found. Return NULL pointer.
return (OptionDefinitionPtr());
}
} // end of namespace isc::dhcp
} // end of namespace isc
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