580 lines
20 KiB
JavaScript
580 lines
20 KiB
JavaScript
export default { enforce_legacy };
|
|
|
|
import defaultExport from './config.js';
|
|
|
|
function log(c, s) {
|
|
c.request.log(s)
|
|
}
|
|
|
|
var _debug = defaultExport["config"]["debug"]
|
|
var _debug = true
|
|
|
|
njs.dump(_debug);
|
|
|
|
function debug(c, s) {
|
|
if (_debug === true) {
|
|
log(c, s)
|
|
}
|
|
}
|
|
|
|
function enforce(r) {
|
|
|
|
var context = {
|
|
request: r,
|
|
config: defaultExport["config"],
|
|
backend: (defaultExport.backend ? defaultExport.backend : "/_backend")
|
|
}
|
|
|
|
log(context, "Inside NJS enforce for " + r.method + " @ " + r.headersIn.host + r.uri)
|
|
|
|
context = computeProtection(context)
|
|
|
|
wkf.run(wkf.build(context), context)
|
|
}
|
|
|
|
|
|
|
|
function enforce_legacy(r) {
|
|
|
|
var context = {
|
|
request: r,
|
|
config: defaultExport["config"]
|
|
}
|
|
|
|
|
|
//log(context, JSON.stringify(context.config["accounting"], null, 2));
|
|
var allowedcontexts = [context.config["accounting"]["scope"]]
|
|
|
|
|
|
log(context, "Inside NJS enforce for " + r.method + " @ " + r.headersIn.host + "/" + r.uri)
|
|
// log(context, "debug is " + JSON.stringify(defaultExport["config"]))
|
|
const token = getGCubeToken(context)
|
|
//log(context, JSON.stringify(context, null, 2))
|
|
log(context, "gcube token" + token)
|
|
if (token != null) {
|
|
debug(context, "[PEP] token is " + token)
|
|
exportVariable(context, "auth_token", token)
|
|
context.request.subrequest("/gcube_user_info")
|
|
.then(reply => {
|
|
if (reply.status === 200) {
|
|
debug(context, "[Social Service] got response " + reply.responseBody)
|
|
var response = JSON.parse(reply.responseBody);
|
|
if (allowedcontexts.indexOf(response.result.context) === -1) {
|
|
debug(context, "[PEP] Unathorized context " + response.result.context)
|
|
throw new Error("Unauthorized")
|
|
}
|
|
return response
|
|
} else {
|
|
log(context, "[Social Service] failed " + reply.status + ":" + reply.responseBody)
|
|
throw new Error("Unauthorized")
|
|
}
|
|
}).then(userinfo => {
|
|
debug(context, "[Social Service] username is " + userinfo.result.username)
|
|
//log(context, njs.dump(context));
|
|
context.userinfo = userinfo
|
|
context.record = buildAccountingRecord_legacy(context)
|
|
|
|
return context.request.subrequest("/_backend", { method: context.request.method, args: JSON.stringify(context.request.args), headers: context.request.headersIn })
|
|
}).then(reply => {
|
|
debug(context, reply.responseBody);
|
|
debug(context, "[SHINYPROXY] response status: " + reply.status)
|
|
copyHeaders(context, reply.headersOut, r.headersOut)
|
|
closeAccountingRecord_legacy(context.record, (reply.status === 200 || reply.status === 201 || reply.status === 204))
|
|
context.request.subrequest("/_accounting_legacy", { detached: true, body: JSON.stringify([context.record]) })
|
|
// r.return(reply.status, reply.responseBody)
|
|
debug(context, "Redirect URI: " + reply.headersOut["Location"])
|
|
if(reply.status === 301 || reply.status === 302){
|
|
debug(context, "sto per fare la redirect");
|
|
r.return(reply.status, reply.headersOut["Location"])
|
|
}else{
|
|
r.return(reply.status, reply.responseBody)
|
|
}
|
|
}).catch(e => { log(context, "Error .... " + njs.dump(e)); context.request.return(e.message === "Unauthorized" ? 403 : 500) })
|
|
|
|
return
|
|
}
|
|
|
|
r.return(401, "Authorization required")
|
|
}
|
|
|
|
function copyHeaders(context, hin, hout){
|
|
for (var h in hin) {
|
|
if(h !== "Location") hout[h] = hin[h];
|
|
}
|
|
}
|
|
|
|
|
|
// ######## WORKFLOW FUNCTIONS ###############
|
|
var wkf = {
|
|
|
|
build: (context) => {
|
|
var actions = [
|
|
"export_pep_credentials",
|
|
"parse_authentication",
|
|
"check_authentication",
|
|
"export_authn_token",
|
|
// "pip",
|
|
"pdp",
|
|
// "export_backend_headers",
|
|
// "pass"
|
|
"start_accounting",
|
|
"pass_and_wait",
|
|
"close_accounting",
|
|
"send_accounting",
|
|
"respond_to_client"
|
|
]
|
|
/*var actions = [
|
|
"export_pep_credentials",
|
|
"parse_authentication",
|
|
"check_authentication",
|
|
"export_authn_token",
|
|
"pip",
|
|
"pdp",
|
|
"export_backend_headers",
|
|
"start_accounting",
|
|
"pass_and_wait",
|
|
"close_accounting",
|
|
"respond_to_client"
|
|
]*/
|
|
return actions
|
|
},
|
|
|
|
run: (actions, context) => {
|
|
context.request.log("Starting workflow with " + njs.dump(actions))
|
|
var w = actions.reduce(
|
|
(acc, f) => { return acc.then(typeof (f) === "function" ? f : wkf[f]) },
|
|
Promise.resolve().then(() => context)
|
|
)
|
|
w.catch(e => { context.request.error(njs.dump(e)); context.request.return(401) })
|
|
},
|
|
|
|
export_pep_credentials: exportPepCredentials,
|
|
export_authn_token: exportAuthToken,
|
|
export_backend_headers: exportBackendHeaders,
|
|
parse_authentication: parseAuthentication,
|
|
check_authentication: checkAuthentication,
|
|
verify_token: verifyToken,
|
|
request_token: requestToken,
|
|
pip: pipExecutor,
|
|
pdp: pdpExecutor,
|
|
pass: pass,
|
|
pass_and_wait: pass_and_wait,
|
|
respond_to_client: respondToClient,
|
|
start_accounting: buildAccountingRecord,
|
|
close_accounting: closeAccountingRecord,
|
|
send_accounting: sendAccountingRecord
|
|
}
|
|
|
|
function getGCubeToken(context) {
|
|
if (context.request.args["gcube-token"]) {
|
|
return context.request.args["gcube-token"];
|
|
} else if (context.request.headersIn['gcube-token']) {
|
|
return context.request.headersIn['gcube-token'];
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
function getTokenField(context, f) {
|
|
return context.authn.verified_token[f]
|
|
}
|
|
|
|
function exportVariable(context, name, value) {
|
|
context.request.variables[name] = value
|
|
return context
|
|
}
|
|
|
|
function exportBackendHeaders(context) {
|
|
return context
|
|
}
|
|
|
|
function exportPepCredentials(context) {
|
|
if (process.env["pep_credentials"] || process.env["PEP_CREDENTIALS"]) {
|
|
return exportVariable(context, "pep_credentials", "Basic " + process.env["PEP_CREDENTIALS"])
|
|
} else if (context.config["pep_credentials"]) {
|
|
return exportVariable(context, "pep_credentials", "Basic " + context.config["pep_credentials"])
|
|
} else {
|
|
throw new Error("Need PEP credentials")
|
|
}
|
|
}
|
|
|
|
function exportAuthToken(context) {
|
|
return exportVariable(context, "auth_token", context.authn.token)
|
|
}
|
|
|
|
function checkAuthentication(context) {
|
|
return context.authn.type === "bearer" ? wkf.verify_token(context) : wkf.request_token(context)
|
|
}
|
|
|
|
function parseAuthentication(context) {
|
|
context.request.log("Inside parseAuthentication")
|
|
context.request.log(JSON.stringify(context.request.args, null, 2))
|
|
var incomingauth = context.request.headersIn["Authorization"]
|
|
|
|
if (!incomingauth) throw new Error("Authentication required");
|
|
|
|
var arr = incomingauth.trim().replace(/\s\s+/g, " ").split(" ")
|
|
if (arr.length != 2) throw new Error("Unknown authentication scheme");
|
|
|
|
var type = arr[0].toLowerCase()
|
|
if (type === "basic" && context.authz.host && (context.authz.host["allow-basic-auth"] || context.authz.host["allow_basic_auth"])) {
|
|
var unamepass = Buffer.from(arr[1], 'base64').toString().split(":")
|
|
if (unamepass.length != 2) return null;
|
|
context.authn = { type: type, raw: arr[1], user: unamepass[0], password: unamepass[1] }
|
|
return context
|
|
} else if (type === "bearer") {
|
|
context.authn = { type: type, raw: arr[1], token: arr[1] }
|
|
return context
|
|
}
|
|
throw new Error("Unknown authentication scheme");
|
|
}
|
|
|
|
function verifyToken(context) {
|
|
log(context, "Inside verifyToken")
|
|
debug(context, "Token is " + context.authn.token)
|
|
var options = {
|
|
"body": "token=" + context.authn.token + "&token_type_hint=access_token"
|
|
}
|
|
return context.request.subrequest("/jwt_verify_request", options)
|
|
.then(reply => {
|
|
if (reply.status === 200) {
|
|
var response = JSON.parse(reply.responseText);
|
|
if (response.active === true) {
|
|
return response
|
|
} else {
|
|
throw new Error("Unauthorized: " + reply.responseText)
|
|
}
|
|
} else {
|
|
throw new Error("Unauthorized: " + reply.responseText)
|
|
}
|
|
}).then(verified_token => {
|
|
context.authn.verified_token =
|
|
JSON.parse(Buffer.from(context.authn.token.split('.')[1], 'base64url').toString())
|
|
return context
|
|
})
|
|
}
|
|
|
|
function requestToken(context) {
|
|
log(context, "Inside requestToken")
|
|
var options = {
|
|
"body": "grant_type=client_credentials&client_id=" + context.authn.user + "&client_secret=" + context.authn.password
|
|
}
|
|
return context.request.subrequest("/jwt_request", options)
|
|
.then(reply => {
|
|
if (reply.status === 200) {
|
|
var response = JSON.parse(reply.responseText);
|
|
context.authn.token = response.access_token
|
|
context.authn.verified_token =
|
|
JSON.parse(Buffer.from(context.authn.token.split('.')[1], 'base64url').toString())
|
|
return context
|
|
} else if (reply.status === 400 || reply.status === 401) {
|
|
var options = {
|
|
"body": "grant_type=password&username=" + context.authn.user + "&password=" + context.authn.password
|
|
}
|
|
return context.request.subrequest("/jwt_request", options)
|
|
.then(reply => {
|
|
if (reply.status === 200) {
|
|
var response = JSON.parse(reply.responseText);
|
|
context.authn.token = response.access_token
|
|
context.authn.verified_token =
|
|
JSON.parse(Buffer.from(context.authn.token.split('.')[1], 'base64url').toString())
|
|
return context
|
|
} else {
|
|
throw new Error("Unauthorized " + reply.status)
|
|
}
|
|
})
|
|
} else {
|
|
throw new Error("Unauthorized " + reply.status)
|
|
}
|
|
})
|
|
}
|
|
|
|
function pipExecutor(context) {
|
|
log(context, "Inside extra claims PIP")
|
|
context.authz.pip.forEach(extra => {
|
|
//call extra claim pip function
|
|
try {
|
|
var operator = extra.operator
|
|
var result = wkf[operator](context, extra.args)
|
|
//ensure array and add to extra_claims
|
|
if (!(result instanceof Array)) result = [result]
|
|
if (!context.extra_claims) context.extra_claims = {};
|
|
context.extra_claims[extra.claim] = result
|
|
} catch (error) {
|
|
log(context, "Skipping invalid extra claim " + njs.dump(error))
|
|
}
|
|
})
|
|
log(context, "Extra claims are " + njs.dump(context.extra_claims))
|
|
return context
|
|
}
|
|
|
|
function pdpExecutor(context) {
|
|
log(context, "Inside PDP")
|
|
return context.authz.pdp(context)
|
|
}
|
|
|
|
function umaCall(context) {
|
|
log(context, "Inside UMA call")
|
|
var options = { "body": computePermissionRequestBody(context) };
|
|
return context.request.subrequest("/permission_request", options)
|
|
.then(reply => {
|
|
if (reply.status === 200) {
|
|
debug(context, "UMA call reply is " + reply.status)
|
|
return context
|
|
} else {
|
|
throw new Error("Response for authorization request is not ok " + reply.status + " " + njs.dump(reply.responseText))
|
|
}
|
|
})
|
|
}
|
|
|
|
// Call backend and return reply to client directly
|
|
async function pass(context) {
|
|
log(context, "Inside pass and wait");
|
|
const r = context.request
|
|
const reply = await r.subrequest(context.backend, { method: r.method, args: r.variables.args, headers: r.headersIn })
|
|
debug(context, "[BACKEND] response status: " + reply.status)
|
|
context.backendresponse = reply
|
|
return respondToClient(context)
|
|
}
|
|
|
|
// Pass to backend but instead of returning to client wait for the reply. Thi intercepts the possibility of performing extra action like closing and sending accounting record.
|
|
async function pass_and_wait(context) {
|
|
log(context, "Inside pass and wait");
|
|
const r = context.request
|
|
const reply = await r.subrequest(context.backend, { method: r.method, args: r.variables.args, headers: r.headersIn })
|
|
debug(context, "[BACKEND] response status: " + reply.status)
|
|
context.backendresponse = reply
|
|
return context
|
|
}
|
|
|
|
// Definetely return backend response
|
|
function respondToClient(context) {
|
|
log(context, "Inside respond to client" + njs.dump(context.backendresponse));
|
|
for (let k in context.backendresponse.headersOut) {
|
|
context.request.headersOut[k] = context.backendresponse.headersOut[k]
|
|
}
|
|
context.request.return(context.backendresponse.status, context.backendresponse.responseText)
|
|
return context
|
|
}
|
|
|
|
// ######## AUTHORIZATION PART ###############
|
|
function computePermissionRequestBody(context) {
|
|
|
|
if (!context.authz.host || !context.authz.path) {
|
|
throw new Error("Enforcemnt mode is always enforcing. Host or path not found...")
|
|
}
|
|
|
|
var audience = computeAudience(context)
|
|
var grant = "grant_type=urn:ietf:params:oauth:grant-type:uma-ticket"
|
|
var mode = "response_mode=decision"
|
|
var permissions = computePermissions(context)
|
|
var extra = ""
|
|
if (context.extra_claims) {
|
|
extra =
|
|
"claim_token_format=urn:ietf:params:oauth:token-type:jwt&claim_token=" +
|
|
JSON.stringify(context.extra_claims).toString("base64url")
|
|
}
|
|
var body = audience + "&" + grant + "&" + permissions + "&" + mode + "&" + extra
|
|
context.request.error("Computed permission request body is " + body)
|
|
return body
|
|
}
|
|
|
|
function computeAudience(context) {
|
|
var aud = context.request.headersIn.host
|
|
if (context.authz.host) {
|
|
aud = context.authz.host.audience || context.authz.host.host
|
|
}
|
|
return "audience=" + aud
|
|
}
|
|
|
|
function computePermissions(context) {
|
|
var resource = context.request.uri
|
|
if (context.authz.path) {
|
|
resource = context.authz.path.name || context.authz.path.path
|
|
}
|
|
var scopes = []
|
|
if (context.authz.method && context.authz.method.scopes) {
|
|
scopes = context.authz.method.scopes
|
|
}
|
|
if (scopes.length > 0) {
|
|
return scopes.map(s => "permission=" + resource + "#" + s).join("&")
|
|
}
|
|
return "permission=" + resource
|
|
}
|
|
|
|
function getPath(hostconfig, incomingpath, incomingmethod) {
|
|
var paths = hostconfig.paths || []
|
|
var matchingpaths = paths
|
|
.filter(p => { return incomingpath.match(p.path) != null })
|
|
.reduce((acc, p) => {
|
|
if (!p.methods || p.methods.length === 0) acc.weak.push({ path: p });
|
|
else {
|
|
var matchingmethods = p.methods.filter(m => m.method.toUpperCase() === incomingmethod)
|
|
if (matchingmethods.length > 0) acc.strong.push({ method: matchingmethods[0], path: p });
|
|
}
|
|
return acc;
|
|
}, { strong: [], weak: [] })
|
|
return matchingpaths.strong.concat(matchingpaths.weak)[0]
|
|
}
|
|
|
|
function getHost(config, host) {
|
|
var matching = config.hosts.filter(h => {
|
|
//compare for both string and array of strings
|
|
return ((h.host.filter && h.host.indexOf(host) !== -1) || h.host === host)
|
|
})
|
|
return matching.length > 0 ? matching[0] : null
|
|
}
|
|
|
|
function computeProtection(context) {
|
|
debug(context, "Getting by host " + context.request.headersIn.host)
|
|
context.authz = {}
|
|
context.authz.host = getHost(context.config, context.request.headersIn.host)
|
|
if (context.authz.host !== null) {
|
|
log(context, "Host found: " + njs.dump(context.authz.host))
|
|
context.authz.pip = context.authz.host.pip ? context.authz.host.pip : [];
|
|
context.authz.pdp = context.authz.host.pdp ? context.authz.host.pdp : umaCall;
|
|
var pathandmethod = getPath(context.authz.host, context.request.uri, context.request.method);
|
|
if (pathandmethod) {
|
|
context.authz.path = pathandmethod.path;
|
|
context.authz.pip = context.authz.path.pip ? context.authz.pip.concat(context.authz.path.pip) : context.authz.pip;
|
|
context.authz.pdp = context.authz.path.pdp ? context.authz.path.pdp : context.authz.pdp;
|
|
context.authz.method = pathandmethod.method;
|
|
if (context.authz.method) {
|
|
context.authz.pip = context.authz.method.pip ? context.authz.pip.concat(context.authz.method.pip) : context.authz.pip;
|
|
context.authz.pdp = context.authz.method.pdp ? context.authz.method.pdp : context.authz.pdp;
|
|
}
|
|
}
|
|
}
|
|
debug(context, "Leaving protection computation: ")
|
|
return context
|
|
}
|
|
|
|
// ####### ACCOUNTING PART #####################
|
|
function buildAccountingRecord(context) {
|
|
log(context, "Inside build accounting record");
|
|
const t = (new Date()).getTime()
|
|
context.record = {
|
|
"recordType": "ServiceUsageRecord",
|
|
"operationCount": 1,
|
|
"creationTime": t,
|
|
"callerHost": context.request.headersIn["x-forwarded-for"],
|
|
"serviceClass": "Application",
|
|
"callerQualifier": "TOKEN",
|
|
"consumerId": getTokenField(context, "preferred_username"),
|
|
"aggregated": true,
|
|
"serviceName": defaultExport["accounting"]["service_name"],
|
|
"duration": 0,
|
|
"maxInvocationTime": 0,
|
|
"scope": defaultExport["accounting"]["scope"],
|
|
"host": defaultExport["accounting"]["host"],
|
|
"startTime": t,
|
|
"id": uuid(),
|
|
"calledMethod": context.request.method + " " + context.request.uri,
|
|
"endTime": 0,
|
|
"minInvocationTime": 0,
|
|
"operationResult": null
|
|
}
|
|
debug(context, "Record is " + JSON.stringify(context.record))
|
|
return context
|
|
}
|
|
|
|
function __buildAccountingRecord_legacy(context) {
|
|
log(context, "Inside build accounting record");
|
|
const t = (new Date()).getTime()
|
|
context.record = {
|
|
"recordType": "ServiceUsageRecord",
|
|
"operationCount": 1,
|
|
"creationTime": t,
|
|
"callerHost": context.request.headersIn["x-forwarded-for"],
|
|
"serviceClass": "Application",
|
|
"callerQualifier": "TOKEN",
|
|
"consumerId": context.userinfo.username,
|
|
"aggregated": true,
|
|
"serviceName": context.config["accounting"]["service_name"],
|
|
"duration": 0,
|
|
"maxInvocationTime": 0,
|
|
"scope": context.config["accounting"]["scope"],
|
|
"host": context.config["accounting"]["host"],
|
|
"startTime": t,
|
|
"id": uuid(),
|
|
"calledMethod": context.request.method + " " + context.request.uri,
|
|
"endTime": 0,
|
|
"minInvocationTime": 0,
|
|
"operationResult": null
|
|
}
|
|
log(context, "Record is " + JSON.stringify(context.record))
|
|
return context
|
|
}
|
|
|
|
function buildAccountingRecord_legacy(context) {
|
|
const t = (new Date()).getTime()
|
|
return {
|
|
"recordType": "ServiceUsageRecord",
|
|
"operationCount": 1,
|
|
"creationTime": t,
|
|
"callerHost": context.request.remoteAddress,
|
|
"serviceClass": "ShinyApp",
|
|
"callerQualifier": "TOKEN",
|
|
"consumerId": context.userinfo.username,
|
|
"aggregated": true,
|
|
"serviceName": context.request.uri.split("app/")[1],
|
|
"duration": 0,
|
|
"maxInvocationTime": 0,
|
|
"scope": context.userinfo.context,
|
|
"host": context.request.headersIn.host,
|
|
"startTime": t,
|
|
"id": uuid(),
|
|
"calledMethod": context.request.method + " " + context.request.uri,
|
|
"endTime": 0,
|
|
"minInvocationTime": 0,
|
|
"operationResult": null
|
|
}
|
|
}
|
|
|
|
function closeAccountingRecord_legacy(record, success) {
|
|
const t = (new Date()).getTime()
|
|
record.duration = t - record.startTime
|
|
record.endTime = t
|
|
record.minInvocationTime = record.duration
|
|
record.operationResult = success ? "SUCCESS" : "FAILED";
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
function closeAccountingRecord(context, success) {
|
|
log(context, "Inside close accounting");
|
|
const t = (new Date()).getTime()
|
|
context.record.duration = t - context.record.startTime
|
|
context.record.endTime = t
|
|
context.record.minInvocationTime = context.record.duration
|
|
context.record.operationResult = success ? "SUCCESS" : "FAILED";
|
|
log(context, "Record is " + njs.dump(context.record))
|
|
return context
|
|
}
|
|
|
|
async function sendAccountingRecord(context) {
|
|
log(context, "Inside send accounting");
|
|
const detached = !_debug;
|
|
const subreq_params = { detached: detached, body: JSON.stringify([context.record]) };
|
|
if (_debug) {
|
|
// debug(context, JSON.stringify(subreq_params));
|
|
const acc_request = await context.request.subrequest("/accounting", subreq_params);
|
|
debug(context, "[ACCOUNTING] response status: " + JSON.stringify(acc_request));
|
|
} else {
|
|
context.request.subrequest("/accounting", subreq_params);
|
|
}
|
|
// const acc_request = await context.request.subrequest("/accounting", { detached : false, body : JSON.stringify([context.record]) })
|
|
// debug(context, "[ACCOUNTING] response status: " + acc_request.status)
|
|
// debug(context, "[ACCOUNTING] " + njs.dump(acc_request));
|
|
return context
|
|
}
|
|
|
|
function uuid() {
|
|
return 'xxxxxxxx-xxxx-4xxx-8xxx-xxxxxxxxxxxx'.replace(/[x]/g, function (c) {
|
|
const r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
|
|
return v.toString(16);
|
|
});
|
|
} |