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mycmd.cc
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mycmd.cc
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#include <config.h>
#include <asiolink/asio_wrapper.h>
#include <asiolink/io_service.h>
#include <asiolink/tls_socket.h>
#include <cc/command_interpreter.h>
#include <dhcp/pkt4.h>
#include <dhcpsrv/cfgmgr.h>
#include <hooks/hooks.h>
#include <http/client.h>
#include <http/response_json.h>
#include "mycmd_log.h"
using namespace isc;
namespace isc {
namespace mycmd {
asiolink::IOServicePtr aio;
http::HttpClientPtr hcli;
std::string url;
}
}
extern "C" {
int version() {
return KEA_HOOKS_VERSION;
}
int multi_threading_compatible() {
return 0;
}
int dhcp4_srv_configured(hooks::CalloutHandle& ctx) {
LOG_INFO(mycmd::mycmd_logger, MYCMD_MOD_ENTER_PHASE).arg("dhcp4_srv_configured");
ctx.getArgument("io_context", mycmd::aio);
mycmd::hcli = boost::make_shared<http::HttpClient>(*(mycmd::aio));
mycmd::hcli->start();
LOG_INFO(mycmd::mycmd_logger, MYCMD_MOD_LEAVE_PHASE).arg("dhcp4_srv_configured");
return 0;
}
int list(hooks::CalloutHandle& ctx) {
data::ConstElementPtr resp;
data::ElementPtr payload = data::Element::createMap();
data::ElementPtr subnets4 = data::Element::createList();
dhcp::SrvConfigPtr cfg = dhcp::CfgMgr::instance().getCurrentCfg();
dhcp::ConstCfgSubnets4Ptr subnets4ptr = cfg->getCfgSubnets4();
for (auto const &subnet : *(subnets4ptr->getAll())) {
data::ElementPtr m = data::Element::createMap();
m->set("id", data::Element::create(static_cast<long long>(subnet->getID())));
m->set("subnet", data::Element::create(subnet->toText()));
subnets4->add(m);
}
payload->set("subnets", subnets4);
resp = config::createAnswer(config::CONTROL_RESULT_SUCCESS, payload);
ctx.setArgument("response", resp);
return 0;
}
int get(hooks::CalloutHandle& ctx) {
data::ConstElementPtr req, args, resp;
dhcp::SrvConfigPtr cfg = dhcp::CfgMgr::instance().getCurrentCfg();
dhcp::ConstCfgSubnets4Ptr subnets4ptr = cfg->getCfgSubnets4();
try {
ctx.getArgument("command", req);
config::parseCommandWithArgs(args, req);
data::ConstElementPtr ptr = args->get("id");
dhcp::SubnetID subnet4id = static_cast<uint32_t>(ptr->intValue());
dhcp::ConstSubnet4Ptr subnet4 = subnets4ptr->getBySubnetId(subnet4id);
data::ElementPtr payload = data::Element::createMap();
data::ElementPtr subnets4 = data::Element::createList();
subnets4->add(subnet4->toElement());
payload->set("subnets", subnets4);
resp = config::createAnswer(config::CONTROL_RESULT_SUCCESS, payload);
} catch (const std::exception& ex) {
resp = config::createAnswer(config::CONTROL_RESULT_ERROR, ex.what());
}
ctx.setArgument("response", resp);
return 0;
}
int call(hooks::CalloutHandle& ctx) {
data::ConstElementPtr resp;
http::Url url(mycmd::url);
http::HttpRequestPtr hreq = boost::make_shared<http::HttpRequest>(http::HttpRequest::Method::HTTP_GET, url.getPath(), http::HttpVersion::HTTP_11(), http::HostHttpHeader(url.getStrippedHostname()));
hreq->context()->headers_.push_back(http::HttpHeaderContext("User-Agent", "kea-hooks-mycmd/0.1"));
hreq->finalize();
http::HttpResponseJsonPtr jresp = boost::make_shared<http::HttpResponseJson>();
mycmd::hcli->asyncSendRequest(url, asiolink::TlsContextPtr(), hreq, jresp,
[](const boost::system::error_code& code, const http::HttpResponsePtr& ptr, const std::string& msg){
LOG_INFO(mycmd::mycmd_logger, MYCMD_LOG_HTTP_CB).arg(code.value()).arg(static_cast<uint16_t>(ptr->getStatusCode()));
});
do {
mycmd::aio->run_one();
LOG_INFO(mycmd::mycmd_logger, MYCMD_LOG_HTTP_POLL);
} while(!(jresp->isFinalized()));
resp = config::createAnswer(config::CONTROL_RESULT_SUCCESS, jresp->getBodyAsJson());
ctx.setArgument("response", resp);
return 0;
}
int load(hooks::LibraryHandle &ctx) {
mycmd::url = ctx.getParameter("url")->stringValue();
ctx.registerCommandCallout("subnet4-list", list);
ctx.registerCommandCallout("subnet4-get", get);
ctx.registerCommandCallout("http-call", call);
LOG_INFO(mycmd::mycmd_logger, MYCMD_MOD_LOAD);
return 0;
}
int unload() {
LOG_INFO(mycmd::mycmd_logger, MYCMD_MOD_UNLOAD);
return 0;
}
}