mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-20 17:29:13 +00:00
129 lines
4 KiB
C++
129 lines
4 KiB
C++
/*
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*
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* (C) 2013-21 - ntop.org
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "ntop_includes.h"
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#ifndef HAVE_NEDGE
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/* **************************************************** */
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ExportInterface::ExportInterface(const char *_endpoint, const char *_topic) {
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topic = strdup(_topic), endpoint = strdup(_endpoint);
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if((context = zmq_ctx_new()) == NULL) {
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const char *msg = "Unable to initialize ZMQ context";
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ntop->getTrace()->traceEvent(TRACE_ERROR, msg);
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throw(msg);
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}
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if((publisher = zmq_socket(context, ZMQ_PUB)) == NULL) {
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const char *msg = "Unable to create ZMQ socket";
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ntop->getTrace()->traceEvent(TRACE_ERROR, msg);
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throw(msg);
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}
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#if ZMQ_VERSION >= ZMQ_MAKE_VERSION(4,1,0)
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if (ntop->getPrefs()->get_export_zmq_encryption_key()) {
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const char *server_public_key = ntop->getPrefs()->get_export_zmq_encryption_key();
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char client_public_key[41];
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char client_secret_key[41];
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int rc;
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rc = zmq_curve_keypair(client_public_key, client_secret_key);
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if (rc != 0) {
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const char *msg = "Error generating ZMQ client key pair";
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ntop->getTrace()->traceEvent(TRACE_ERROR, msg);
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throw(msg);
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}
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if (strlen(server_public_key) != 40) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Bad ZMQ server public key size (%lu != 40) '%s'",
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strlen(server_public_key), server_public_key);
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throw("Bad ZMQ server public key size");
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}
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rc = zmq_setsockopt(publisher, ZMQ_CURVE_SERVERKEY,
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server_public_key, strlen(server_public_key)+1);
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if (rc != 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Error setting ZMQ_CURVE_SERVERKEY = %s (%d)",
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server_public_key, errno);
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throw("Error setting ZMQ_CURVE_SERVERKEY");
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}
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rc = zmq_setsockopt(publisher, ZMQ_CURVE_PUBLICKEY,
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client_public_key, strlen(client_public_key)+1);
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if (rc != 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Error setting ZMQ_CURVE_PUBLICKEY = %s",
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client_public_key);
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throw("Error setting ZMQ_CURVE_PUBLICKEY");
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}
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rc = zmq_setsockopt(publisher, ZMQ_CURVE_SECRETKEY, client_secret_key,
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strlen(client_secret_key)+1);
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if (rc != 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Error setting ZMQ_CURVE_SECRETKEY = %s",
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client_secret_key);
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throw("Error setting ZMQ_CURVE_SECRETKEY");
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}
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}
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#endif
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if(zmq_bind(publisher, endpoint) != 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Unable to bind ZMQ endpoint %s: %s",
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endpoint, strerror(errno));
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throw("Unable to bind ZMQ endpoint");
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}
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "Successfully created ZMQ endpoint %s", endpoint);
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}
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/* **************************************************** */
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ExportInterface::~ExportInterface() {
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if(topic) free(topic);
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if(endpoint) free(endpoint);
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zmq_close(publisher);
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zmq_ctx_destroy(context);
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}
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/* **************************************************** */
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void ExportInterface::export_data(char *json) {
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if(publisher) {
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struct zmq_msg_hdr msg_hdr;
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snprintf(msg_hdr.url, sizeof(msg_hdr.url), "%s", topic);
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msg_hdr.version = ZMQ_MSG_VERSION, msg_hdr.size = (u_int32_t)strlen(json);
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zmq_send(publisher, &msg_hdr, sizeof(msg_hdr), ZMQ_SNDMORE);
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zmq_send(publisher, json, msg_hdr.size, 0);
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ntop->getTrace()->traceEvent(TRACE_INFO, "[ZMQ] %s", json);
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}
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}
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/* **************************************************** */
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#endif
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