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Made changes to ubuntu-server to reject connections not from localhost

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Signed-off-by: Volodymyr Kozieiev <vkjr.sp@gmail.com>
This commit is contained in:
Volodymyr Kozieiev 2019-05-14 12:41:58 +03:00
parent b0449f3416
commit 807e816936
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GPG Key ID: 1F706640AAF07516
1 changed files with 14 additions and 1 deletions
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13
ubuntu-server.js
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@ -114,6 +114,18 @@ function rnUbuntuServer(readable, writable) {
}); });
} }
var closeDangerousConnection = function(sock) {
var remoteAddress = sock.remoteAddress;
if(remoteAddress.indexOf("127.0.0.1") == -1) {
console.log("WARN: connection not from localhost, will be closed: ", remoteAddress);
sock.destroy();
return true;
} else {
console.log("Connection from: ", remoteAddress);
return false;
}
}
if (process.argv.indexOf('--pipe') != -1) { if (process.argv.indexOf('--pipe') != -1) {
console.log = console.error console.log = console.error
rnUbuntuServer(process.stdin, process.stdout); rnUbuntuServer(process.stdin, process.stdout);
@ -127,6 +139,7 @@ if (process.argv.indexOf('--pipe') != -1) {
var server = net.createServer((sock) => { var server = net.createServer((sock) => {
DEBUG && console.error("-- Connection from RN client"); DEBUG && console.error("-- Connection from RN client");
if(!closeDangerousConnection(sock))
rnUbuntuServer(sock, sock); rnUbuntuServer(sock, sock);
}).listen(port, function() { console.error("-- Server starting") }); }).listen(port, function() { console.error("-- Server starting") });
} }