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node-red/red/runtime/nodes/registry/installer.js

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/**
* Copyright 2015, 2016 IBM Corp.
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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.
**/
var when = require("when");
var path = require("path");
var fs = require("fs");
var registry = require("./registry");
var log = require("../../log");
var events = require("../../events");
var child_process = require('child_process');
var npmCommand = process.platform === 'win32' ? 'npm.cmd' : 'npm';
var paletteEditorEnabled = false;
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var settings;
var moduleRe = /^[^/]+$/;
var slashRe = process.platform === "win32" ? /\\|[/]/ : /[/]/;
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function init(_settings) {
settings = _settings;
}
function checkModulePath(folder) {
var moduleName;
var err;
var fullPath = path.resolve(folder);
var packageFile = path.join(fullPath,'package.json');
try {
var pkg = require(packageFile);
moduleName = pkg.name;
if (!pkg['node-red']) {
// TODO: nls
err = new Error("Invalid Node-RED module");
err.code = 'invalid_module';
throw err;
}
} catch(err2) {
err = new Error("Module not found");
err.code = 404;
throw err;
}
return moduleName;
}
function checkExistingModule(module) {
if (registry.getModuleInfo(module)) {
// TODO: nls
var err = new Error("Module already loaded");
err.code = "module_already_loaded";
throw err;
}
}
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function installModule(module) {
//TODO: ensure module is 'safe'
return when.promise(function(resolve,reject) {
var installName = module;
try {
if (moduleRe.test(module)) {
// Simple module name - assume it can be npm installed
} else if (slashRe.test(module)) {
// A path - check if there's a valid package.json
installName = module;
module = checkModulePath(module);
}
checkExistingModule(module);
} catch(err) {
return reject(err);
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}
log.info(log._("server.install.installing",{name: module}));
var installDir = settings.userDir || process.env.NODE_RED_HOME || ".";
var child = child_process.execFile(npmCommand,['install','--production',installName],
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{
cwd: installDir
},
function(err, stdin, stdout) {
if (err) {
var lookFor404 = new RegExp(" 404 .*"+installName+"$","m");
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if (lookFor404.test(stdout)) {
log.warn(log._("server.install.install-failed-not-found",{name:module}));
var e = new Error("Module not found");
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e.code = 404;
reject(e);
} else {
log.warn(log._("server.install.install-failed-long",{name:module}));
log.warn("------------------------------------------");
log.warn(err.toString());
log.warn("------------------------------------------");
reject(new Error(log._("server.install.install-failed")));
}
} else {
log.info(log._("server.install.installed",{name:module}));
resolve(require("./index").addModule(module).then(reportAddedModules));
}
}
);
});
}
function reportAddedModules(info) {
//comms.publish("node/added",info.nodes,false);
if (info.nodes.length > 0) {
log.info(log._("server.added-types"));
for (var i=0;i<info.nodes.length;i++) {
for (var j=0;j<info.nodes[i].types.length;j++) {
log.info(" - "+
(info.nodes[i].module?info.nodes[i].module+":":"")+
info.nodes[i].types[j]+
(info.nodes[i].err?" : "+info.nodes[i].err:"")
);
}
}
}
return info;
}
function reportRemovedModules(removedNodes) {
//comms.publish("node/removed",removedNodes,false);
log.info(log._("server.removed-types"));
for (var j=0;j<removedNodes.length;j++) {
for (var i=0;i<removedNodes[j].types.length;i++) {
log.info(" - "+(removedNodes[j].module?removedNodes[j].module+":":"")+removedNodes[j].types[i]);
}
}
return removedNodes;
}
function uninstallModule(module) {
return when.promise(function(resolve,reject) {
if (/[\s;]/.test(module)) {
reject(new Error(log._("server.install.invalid")));
return;
}
var installDir = settings.userDir || process.env.NODE_RED_HOME || ".";
var moduleDir = path.join(installDir,"node_modules",module);
try {
fs.statSync(moduleDir);
} catch(err) {
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return reject(new Error(log._("server.install.uninstall-failed",{name:module})));
}
var list = registry.removeModule(module);
log.info(log._("server.install.uninstalling",{name:module}));
var child = child_process.execFile(npmCommand,['remove',module],
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{
cwd: installDir
},
function(err, stdin, stdout) {
if (err) {
log.warn(log._("server.install.uninstall-failed-long",{name:module}));
log.warn("------------------------------------------");
log.warn(err.toString());
log.warn("------------------------------------------");
reject(new Error(log._("server.install.uninstall-failed",{name:module})));
} else {
log.info(log._("server.install.uninstalled",{name:module}));
reportRemovedModules(list);
// TODO: tidy up internal event names
events.emit("node-module-uninstalled",module)
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resolve(list);
}
}
);
});
}
function checkPrereq() {
if (settings.hasOwnProperty('editorTheme') &&
settings.editorTheme.hasOwnProperty('palette') &&
settings.editorTheme.palette.hasOwnProperty('editable') &&
settings.editorTheme.palette.editable === false
) {
log.info(log._("server.palette-editor.disabled"));
paletteEditorEnabled = false;
return when.resolve();
} else {
return when.promise(function(resolve) {
child_process.execFile(npmCommand,['-v'],function(err) {
if (err) {
log.info(log._("server.palette-editor.npm-not-found"));
paletteEditorEnabled = false;
} else {
paletteEditorEnabled = true;
}
resolve();
});
})
}
}
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module.exports = {
init: init,
checkPrereq: checkPrereq,
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installModule: installModule,
uninstallModule: uninstallModule,
paletteEditorEnabled: function() {
return paletteEditorEnabled
}
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}