added code to deny service to user by backup if data is not fresh
This commit is contained in:
Abhishek Sinha
parent
fd560acc8d
commit
abe35e970c
196
index.html
196
index.html
@ -12295,14 +12295,22 @@
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});
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},
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sync_with_supernode: function(trader_flo_address) {
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sync_with_supernode: async function(trader_flo_address) {
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const user_crypto_balances = await readDBbyIndex('crypto_balances',
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'trader_flo_address', trader_flo_address);
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const user_cash_balances = await readDBbyIndex('cash_balances',
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'trader_flo_address', trader_flo_address);
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const RM_RPC = new localbitcoinplusplus.rpc();
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RM_RPC.send_rpc
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.call(this, "sync_with_supernode", {
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trader_flo_address: trader_flo_address,
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job: "SYNC_MY_LOCAL_DB_WITH_SUPERNODE_DB",
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receiver_flo_address:
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localbitcoinplusplus.MY_SUPERNODE_FLO_ADDRESS
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receiver_flo_address: localbitcoinplusplus.MY_SUPERNODE_FLO_ADDRESS,
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user_crypto_balances: user_crypto_balances,
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user_cash_balances: user_cash_balances
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})
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.then(sync_request => doSend(sync_request));
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},
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@ -12857,6 +12865,33 @@
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}
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},
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is_user_blacklisted: function(flo_addr="") {
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try {
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storedNames = JSON.parse(localStorage.getItem("blacklisted_flo_addrs"));
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if(typeof storedNames=="object") {
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return storedNames.includes(flo_addr);
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} else return false;
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} catch (error) {
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return false;
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}
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},
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whitelist_flo_id: function(flo_addr='') {
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let blacklist = JSON.parse(localStorage.getItem("blacklisted_flo_addrs"));
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let index = blacklist.indexOf(flo_addr);
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if(index>=0) {
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blacklist.splice(index, 1);
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localStorage.setItem("blacklisted_flo_addrs", JSON.stringify(storedNames));
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}
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},
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blacklist_flo_id: function(flo_addr='') {
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let blacklist = JSON.parse(localStorage.getItem("blacklisted_flo_addrs"));
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if(!blacklist.includes(flo_addr)) {
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localStorage.setItem("blacklisted_flo_addrs", JSON.stringify(storedNames));
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}
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},
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};
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/*Modified functions from https://github.com/tristanls/k-bucket */
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@ -15718,6 +15753,12 @@
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}
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);
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let is_user_blacklisted = localbitcoinplusplus.actions.is_user_blacklisted(params.trader_flo_address);
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if(is_user_blacklisted===true) {
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console.warn(`Flo Id ${params.trader_flo_address} is blacklisted.`);
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return false;
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}
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switch (method) {
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case "trade_buy":
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RM_RPC.filter_legit_requests(
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@ -17277,15 +17318,80 @@
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)
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.then(function(su_db_data) {
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if (typeof su_db_data == "object") {
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su_db_data.trader_flo_address =
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params.trader_flo_address;
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su_db_data.receiver_flo_address =
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params.trader_flo_address;
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RM_RPC.send_rpc
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.call(this, "server_sync_response", su_db_data)
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.then(server_sync_response =>
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doSend(server_sync_response)
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);
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/*The below check for stale data should only run by backup supernode
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serving other's users.
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Primary supernode is assumed to have the latest data of user always.
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And hence this check should not be performed by Primary supernode. It
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should always send the sync data response to user. */
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if(typeof params.user_crypto_balances == "object"
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&& params.user_crypto_balances.length>0
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&& typeof params.user_crypto_balances == "object"
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&& params.user_crypto_balances.length>0) {
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let user_stale_crypto_data_in_server=true;
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let user_stale_cash_data_in_server=true;
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user_stale_crypto_data_in_server = su_db_data["crypto_balances"].filter(server_data=>{
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return params.user_crypto_balances.some(function(user_data){
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if(server_data.id === user_data.id) {
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return (server_data.crypto_balance!=user_data.crypto_balance
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|| server_data.vectorClock<user_data.vectorClock
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|| server_data.timestamp<user_data.timestamp)
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}
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});
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});
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user_stale_cash_data_in_server = su_db_data["cash_balances"].filter(server_data=>{
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return params.user_cash_balances.some(function(user_data){
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if(server_data.id === user_data.id) {
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return (server_data.cash_balance!=user_data.cash_balance
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|| server_data.vectorClock<user_data.vectorClock
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|| server_data.timestamp<user_data.timestamp)
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}
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});
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});
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// If either of user or server has no data of the user, deny service
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if(params.user_cash_balances.length==0
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|| params.user_crypto_balances.length==0
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|| su_db_data["crypto_balances"].length==0
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|| su_db_data["cash_balances"].length==0) {
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user_stale_crypto_data_in_server = true;
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user_stale_cash_data_in_server = true;
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}
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if(user_stale_crypto_data_in_server.length
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|| user_stale_cash_data_in_server.length) {
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// Server has old data, don't serve the user
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localbitcoinplusplus.actions.blacklist_flo_id(params.trader_flo_address);
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let service_denied_response = {};
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service_denied_response.msg = `Supernode ${localbitcoinplusplus.wallets.my_local_flo_address} denied access.
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The server does not have latest data. Please retry after sometime.`;
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service_denied_response.trader_flo_address = params.trader_flo_address;
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service_denied_response.receiver_flo_address = params.trader_flo_address;
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RM_RPC.send_rpc
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.call(this, "service_denied", service_denied_response)
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.then(server_response =>
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doSend(server_response)
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);
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} else {
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localbitcoinplusplus.actions.whitelist_flo_id(params.trader_flo_address);
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su_db_data.trader_flo_address = params.trader_flo_address;
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su_db_data.receiver_flo_address = params.trader_flo_address;
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RM_RPC.send_rpc
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.call(this, "server_sync_response", su_db_data)
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.then(server_sync_response =>
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doSend(server_sync_response)
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);
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}
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}
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}
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});
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}
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@ -17379,6 +17485,12 @@
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);
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}
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let is_user_blacklisted = localbitcoinplusplus.actions.is_user_blacklisted(params.trader_flo_address);
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if(is_user_blacklisted===true) {
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console.warn(`Flo Id ${params.trader_flo_address} is blacklisted.`);
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return false;
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}
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switch (method) {
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case "trade_buy":
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RM_RPC.filter_legit_backup_requests(
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@ -22173,6 +22285,36 @@
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})();
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}
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break;
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case "service_denied":
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if (
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typeof res_obj.params == "object" &&
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typeof res_obj.params[0] == "object"
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) {
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if (
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typeof localbitcoinplusplus.wallets
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.my_local_flo_address !== "string" ||
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service_denied_data.trader_flo_address !==
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localbitcoinplusplus.wallets.my_local_flo_address ||
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localbitcoinplusplus.master_configurations.supernodesPubKeys.includes(
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localbitcoinplusplus.wallets.my_local_flo_public_key
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)
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)
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return false;
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// Only the relevent user node should get response
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if (
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res_obj.params[0].trader_flo_address !==
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localbitcoinplusplus.wallets.my_local_flo_address
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)
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return;
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if(typeof res_obj.params[0].msg=="string" && res_obj.params[0].msg.length>0) {
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websocket.close();
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showMessage(res_obj.params[0].msg);
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}
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}
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break;
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case "deposit_asset_request":
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response_from_sever = RM_RPC.receive_rpc_response.call(
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this,
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@ -24033,6 +24175,36 @@
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})();
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}
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break;
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case "service_denied":
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if (
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typeof res_obj.params == "object" &&
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typeof res_obj.params[0] == "object"
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) {
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if (
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typeof localbitcoinplusplus.wallets
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.my_local_flo_address !== "string" ||
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service_denied_data.trader_flo_address !==
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localbitcoinplusplus.wallets.my_local_flo_address ||
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localbitcoinplusplus.master_configurations.supernodesPubKeys.includes(
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localbitcoinplusplus.wallets.my_local_flo_public_key
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)
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)
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return false;
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// Only the relevent user node should get response
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if (
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res_obj.params[0].trader_flo_address !==
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localbitcoinplusplus.wallets.my_local_flo_address
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)
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return;
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if(typeof res_obj.params[0].msg=="string" && res_obj.params[0].msg.length>0) {
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websocket.close();
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showMessage(res_obj.params[0].msg);
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}
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}
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break;
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case "deposit_asset_request":
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response_from_sever = RM_RPC.backup_receive_rpc_response.call(
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this,
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