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% Licensed under the Apache License, Version 2.0 (the "License"); you may not
% use this file except in compliance with the License. You may obtain a copy of
% the License at
%
% http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
% License for the specific language governing permissions and limitations under
% the License.
-define(AUTH_DB_DOC_VALIDATE_FUNCTION, <<"
function(newDoc, oldDoc, userCtx, secObj) {
if (newDoc._deleted === true) {
// allow deletes by admins and matching users
// without checking the other fields
if ((userCtx.roles.indexOf('_admin') !== -1) ||
(userCtx.name == oldDoc.name)) {
return;
} else {
throw({forbidden: 'Only admins may delete other user docs.'});
}
}
if (newDoc.type !== 'user') {
throw({forbidden : 'doc.type must be user'});
} // we only allow user docs for now
if (!newDoc.name) {
throw({forbidden: 'doc.name is required'});
}
if (!newDoc.roles) {
throw({forbidden: 'doc.roles must exist'});
}
if (!isArray(newDoc.roles)) {
throw({forbidden: 'doc.roles must be an array'});
}
for (var idx = 0; idx < newDoc.roles.length; idx++) {
if (typeof newDoc.roles[idx] !== 'string') {
throw({forbidden: 'doc.roles can only contain strings'});
}
}
if (newDoc._id !== ('org.couchdb.user:' + newDoc.name)) {
throw({
forbidden: 'Doc ID must be of the form org.couchdb.user:name'
});
}
if (oldDoc) { // validate all updates
if (oldDoc.name !== newDoc.name) {
throw({forbidden: 'Usernames can not be changed.'});
}
}
if (newDoc.password_sha && !newDoc.salt) {
throw({
forbidden: 'Users with password_sha must have a salt.' +
'See /_utils/script/couch.js for example code.'
});
}
var available_schemes = [\"simple\", \"pbkdf2\", \"bcrypt\"];
if (newDoc.password_scheme
&& available_schemes.indexOf(newDoc.password_scheme) == -1) {
throw({
forbidden: 'Password scheme `' + newDoc.password_scheme
+ '` not supported.'
});
}
if (newDoc.password_scheme === \"pbkdf2\") {
if (typeof(newDoc.iterations) !== \"number\") {
throw({forbidden: \"iterations must be a number.\"});
}
if (typeof(newDoc.derived_key) !== \"string\") {
throw({forbidden: \"derived_key must be a string.\"});
}
}
var is_server_or_database_admin = function(userCtx, secObj) {
// see if the user is a server admin
if(userCtx.roles.indexOf('_admin') !== -1) {
return true; // a server admin
}
// see if the user a database admin specified by name
if(secObj && secObj.admins && secObj.admins.names) {
if(secObj.admins.names.indexOf(userCtx.name) !== -1) {
return true; // database admin
}
}
// see if the user a database admin specified by role
if(secObj && secObj.admins && secObj.admins.roles) {
var db_roles = secObj.admins.roles;
for(var idx = 0; idx < userCtx.roles.length; idx++) {
var user_role = userCtx.roles[idx];
if(db_roles.indexOf(user_role) !== -1) {
return true; // role matches!
}
}
}
return false; // default to no admin
}
if (!is_server_or_database_admin(userCtx, secObj)) {
if (oldDoc) { // validate non-admin updates
if (userCtx.name !== newDoc.name) {
throw({
forbidden: 'You may only update your own user document.'
});
}
// validate role updates
var oldRoles = (oldDoc.roles || []).sort();
var newRoles = newDoc.roles.sort();
if (oldRoles.length !== newRoles.length) {
throw({forbidden: 'Only _admin may edit roles'});
}
for (var i = 0; i < oldRoles.length; i++) {
if (oldRoles[i] !== newRoles[i]) {
throw({forbidden: 'Only _admin may edit roles'});
}
}
} else if (newDoc.roles.length > 0) {
throw({forbidden: 'Only _admin may set roles'});
}
}
// no system roles in users db
for (var i = 0; i < newDoc.roles.length; i++) {
if (newDoc.roles[i][0] === '_') {
throw({
forbidden:
'No system roles (starting with underscore) in users db.'
});
}
}
// no system names as names
if (newDoc.name[0] === '_') {
throw({forbidden: 'Username may not start with underscore.'});
}
var badUserNameChars = [':'];
for (var i = 0; i < badUserNameChars.length; i++) {
if (newDoc.name.indexOf(badUserNameChars[i]) >= 0) {
throw({forbidden: 'Character `' + badUserNameChars[i] +
'` is not allowed in usernames.'});
}
}
}
">>).
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