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'use strict';
var rpcRequestID = 1,
rpcSessionID = L.env.sessionid || '00000000000000000000000000000000',
rpcBaseURL = L.url('admin/ubus');
return L.Class.extend({
call: function(req, cb) {
var q = '';
if (Array.isArray(req)) {
if (req.length == 0)
return Promise.resolve([]);
for (var i = 0; i < req.length; i++)
q += '%s%s.%s'.format(
q ? ';' : '/',
req[i].params[1],
req[i].params[2]
);
}
else {
q += '/%s.%s'.format(req.params[1], req.params[2]);
}
return L.Request.post(rpcBaseURL + q, req, {
timeout: (L.env.rpctimeout || 5) * 1000,
credentials: true
}).then(cb);
},
handleListReply: function(req, msg) {
var list = msg.result;
/* verify message frame */
if (typeof(msg) != 'object' || msg.jsonrpc != '2.0' || !msg.id || !Array.isArray(list))
list = [ ];
req.resolve(list);
},
handleCallReply: function(req, res) {
var type = Object.prototype.toString,
msg = null;
if (!res.ok)
L.error('RPCError', 'RPC call failed with HTTP error %d: %s',
res.status, res.statusText || '?');
msg = res.json();
/* fetch response attribute and verify returned type */
var ret = undefined;
/* verify message frame */
if (typeof(msg) == 'object' && msg.jsonrpc == '2.0') {
if (typeof(msg.error) == 'object' && msg.error.code && msg.error.message)
req.reject(new Error('RPC call failed with error %d: %s'
.format(msg.error.code, msg.error.message || '?')));
else if (Array.isArray(msg.result) && msg.result[0] == 0)
ret = (msg.result.length > 1) ? msg.result[1] : msg.result[0];
}
else {
req.reject(new Error('Invalid message frame received'));
}
if (req.expect) {
for (var key in req.expect) {
if (ret != null && key != '')
ret = ret[key];
if (ret == null || type.call(ret) != type.call(req.expect[key]))
ret = req.expect[key];
break;
}
}
/* apply filter */
if (typeof(req.filter) == 'function') {
req.priv[0] = ret;
req.priv[1] = req.params;
ret = req.filter.apply(this, req.priv);
}
req.resolve(ret);
},
list: function() {
var msg = {
jsonrpc: '2.0',
id: rpcRequestID++,
method: 'list',
params: arguments.length ? this.varargs(arguments) : undefined
};
return this.call(msg, this.handleListReply);
},
declare: function(options) {
return Function.prototype.bind.call(function(rpc, options) {
var args = this.varargs(arguments, 2);
return new Promise(function(resolveFn, rejectFn) {
/* build parameter object */
var p_off = 0;
var params = { };
if (Array.isArray(options.params))
for (p_off = 0; p_off < options.params.length; p_off++)
params[options.params[p_off]] = args[p_off];
/* all remaining arguments are private args */
var priv = [ undefined, undefined ];
for (; p_off < args.length; p_off++)
priv.push(args[p_off]);
/* store request info */
var req = {
expect: options.expect,
filter: options.filter,
resolve: resolveFn,
reject: rejectFn,
params: params,
priv: priv
};
/* build message object */
var msg = {
jsonrpc: '2.0',
id: rpcRequestID++,
method: 'call',
params: [
rpcSessionID,
options.object,
options.method,
params
]
};
/* call rpc */
rpc.call(msg, rpc.handleCallReply.bind(rpc, req));
});
}, this, this, options);
},
getSessionID: function() {
return rpcSessionID;
},
setSessionID: function(sid) {
rpcSessionID = sid;
},
getBaseURL: function() {
return rpcBaseURL;
},
setBaseURL: function(url) {
rpcBaseURL = url;
}
});
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