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sessions-subject.js
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sessions-subject.js
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"use strict";
const locreq = require("locreq")(__dirname);
const Promise = require("bluebird");
const CurrentSessionSubject = require("../subject-types/current-session-subject.js");
const SuperContext = locreq("lib/super-context.js");
const Errors = locreq("lib/response/error.js");
const Responses = locreq("lib/response/responses.js");
const Subject = locreq("lib/subject/subject.js");
const SecureHasher = locreq("lib/utils/secure-hasher.js");
async function validate_auth_data(app, username, password) {
const [user] = await app.Datastore.find("users", {
"username.safe": username,
});
if (!user) {
throw new Errors.InvalidCredentials("Incorrect username!");
}
const is_valid = await SecureHasher.matches(password, user.password);
if (!is_valid) {
throw new Errors.InvalidCredentials("Incorrect password!");
}
return user;
}
function try_to_login(app, context, { username, password }) {
return Promise.try(async () => {
if (!username) {
throw new Errors.InvalidCredentials("Missing username!");
}
if (!password) {
throw new Errors.InvalidCredentials("Missing password!");
}
const user = await validate_auth_data(app, username, password);
const session = await app.run_action(
new SuperContext(),
["collections", "sessions"],
"create",
{ user: user.sealious_id, "session-id": null }
);
await app.run_action(
new SuperContext(),
["collections", "users", user.sealious_id],
"edit",
{ last_login_context: context }
);
return new Responses.NewSession(session["session-id"]);
});
}
const SessionsSubject = function(app) {
this.perform_action = function(context, action_name, params) {
params = params || {};
switch (action_name) {
case "create":
return try_to_login(app, context, params);
default:
throw new Errors.DeveloperError(
`Unknown/unsupported action '${action_name}' for Session Subject.`
);
}
};
this.get_child_subject = function(key) {
switch (key) {
case "current":
return new CurrentSessionSubject(app);
default:
throw new Errors.BadSubjectPath(
`No child subject with key '${key}' in SessionSubject`
);
}
};
};
SessionsSubject.prototype = Object.create(Subject.prototype);
SessionsSubject.subject_name = "sessions";
module.exports = SessionsSubject;

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