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import React, {Component} from 'react';
import './Connections.scss';
import Connection from "../components/Connection";
import Table from 'react-bootstrap/Table';
import {Redirect} from 'react-router';
import {withRouter} from "react-router-dom";
import backend from "../backend";
import ConnectionMatchedRules from "../components/ConnectionMatchedRules";
class Connections extends Component {
constructor(props) {
super(props);
this.state = {
loading: false,
connections: [],
firstConnection: null,
lastConnection: null,
prevParams: null,
flagRule: null,
rules: null,
queryString: null
};
this.scrollTopThreashold = 0.00001;
this.scrollBottomThreashold = 0.99999;
this.maxConnections = 500;
this.queryLimit = 50;
}
componentDidMount() {
this.loadConnections({limit: this.queryLimit})
.then(() => this.setState({loaded: true}));
if (this.props.initialConnection != null) {
this.setState({selected: this.props.initialConnection.id});
// TODO: scroll to initial connection
}
}
connectionSelected = (c) => {
this.setState({selected: c.id});
this.props.onSelected(c);
};
componentDidUpdate(prevProps, prevState, snapshot) {
if (this.state.loaded && prevProps.location.search !== this.props.location.search) {
this.setState({queryString: this.props.location.search});
this.loadConnections({limit: this.queryLimit})
.then(() => console.log("Connections reloaded after query string update"));
}
}
handleScroll = (e) => {
let relativeScroll = e.currentTarget.scrollTop / (e.currentTarget.scrollHeight - e.currentTarget.clientHeight);
if (!this.state.loading && relativeScroll > this.scrollBottomThreashold) {
this.loadConnections({from: this.state.lastConnection.id, limit: this.queryLimit,})
.then(() => console.log("Following connections loaded"));
}
if (!this.state.loading && relativeScroll < this.scrollTopThreashold) {
this.loadConnections({to: this.state.firstConnection.id, limit: this.queryLimit,})
.then(() => console.log("Previous connections loaded"));
}
};
addServicePortFilter = (port) => {
const urlParams = new URLSearchParams(this.props.location.search);
urlParams.set("service_port", port);
this.setState({queryString: "?" + urlParams});
};
addMatchedRulesFilter = (matchedRule) => {
const urlParams = new URLSearchParams(this.props.location.search);
const oldMatchedRules = urlParams.getAll("matched_rules") || [];
if (!oldMatchedRules.includes(matchedRule)) {
urlParams.append("matched_rules", matchedRule);
this.setState({queryString: "?" + urlParams});
}
};
async loadConnections(params) {
let url = "/api/connections";
const urlParams = new URLSearchParams(this.props.location.search);
for (const [name, value] of Object.entries(params)) {
urlParams.set(name, value);
}
this.setState({loading: true, prevParams: params});
let res = (await backend.get(`${url}?${urlParams}`)).json;
let connections = this.state.connections;
let firstConnection = this.state.firstConnection;
let lastConnection = this.state.lastConnection;
if (params !== undefined && params.from !== undefined) {
if (res.length > 0) {
connections = this.state.connections.concat(res);
lastConnection = connections[connections.length - 1];
if (connections.length > this.maxConnections) {
connections = connections.slice(connections.length - this.maxConnections,
connections.length - 1);
firstConnection = connections[0];
}
}
} else if (params !== undefined && params.to !== undefined) {
if (res.length > 0) {
connections = res.concat(this.state.connections);
firstConnection = connections[0];
if (connections.length > this.maxConnections) {
connections = connections.slice(0, this.maxConnections);
lastConnection = connections[this.maxConnections - 1];
}
}
} else {
if (res.length > 0) {
connections = res;
firstConnection = connections[0];
lastConnection = connections[connections.length - 1];
} else {
connections = [];
firstConnection = null;
lastConnection = null;
}
}
let rules = this.state.rules;
if (rules === null) {
rules = (await backend.get("/api/rules")).json;
}
this.setState({
loading: false,
connections: connections,
rules: rules,
firstConnection: firstConnection,
lastConnection: lastConnection
});
}
render() {
let redirect;
let queryString = this.state.queryString !== null ? this.state.queryString : "";
if (this.state.selected) {
let format = this.props.match.params.format;
format = format !== undefined ? "/" + format : "";
redirect = <Redirect push to={`/connections/${this.state.selected}${format}${queryString}`} />;
}
let loading = null;
if (this.state.loading) {
loading = <tr>
<td colSpan={9}>Loading...</td>
</tr>;
}
return (
<div className="connections" onScroll={this.handleScroll}>
<div className="connections-header-padding"/>
<Table borderless size="sm">
<thead>
<tr>
<th>service</th>
<th>srcip</th>
<th>srcport</th>
<th>dstip</th>
<th>dstport</th>
<th>started_at</th>
<th>duration</th>
<th>up</th>
<th>down</th>
<th>actions</th>
</tr>
</thead>
<tbody>
{
this.state.connections.flatMap(c => {
return [<Connection key={c.id} data={c} onSelected={() => this.connectionSelected(c)}
selected={this.state.selected === c.id}
onMarked={marked => c.marked = marked}
onEnabled={enabled => c.hidden = !enabled}
addServicePortFilter={this.addServicePortFilter} />,
c.matched_rules.length > 0 &&
<ConnectionMatchedRules key={c.id + "_m"} matchedRules={c.matched_rules}
rules={this.state.rules}
addMatchedRulesFilter={this.addMatchedRulesFilter} />
];
})
}
{loading}
</tbody>
</Table>
{redirect}
</div>
);
}
}
export default withRouter(Connections);
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