Get comose file via API

instead of reading file, which removes permission for read complications

Author: SloCompTech

auth.js

@@ -19,7 +19,6 @@ const init = async function (req, res, next) {
  if (method == 'Bearer') { // Token
  req.token = val;
  req.user = jwt.decode(val);
- 
  } else if (method == 'Basic') { // Username & password
  const raw = Buffer.from(val, 'base64').toString('utf8');
  const credentials = raw.split(':');

main.js

@@ -22,7 +22,6 @@ const Joi = require('@hapi/joi');
 const configSchema = Joi.object().keys({
  DISABLE_AUTH: Joi.any(), // Disable authentication
  PORTAINER_API: Joi.string().required(), // Portainer API URL
- PORTAINER_DIR: Joi.string().required(), // Portainer directory
  PORTAINER_PASS: Joi.string(), // Portainer (default) user 
  PORTAINER_USER: Joi.string(), // Portainer (default) password
 }).options({ allowUnknown: true });

portainer.js

@@ -2,14 +2,12 @@
  * Portainer functions
  */
 const axios = require('axios').default;
-const fs = require('fs');
-const path = require('path');
 
 /**
  * Login into portainer
  * @param {string} username User's username
  * @param {string} password User's password
- * @returns {string} JWT token
+ * @returns {string} Portainer access token
  */
 const login = async function (username, password) {
  const response = await axios.post(`${process.env.PORTAINER_API}/auth`, {
@@ -26,7 +24,7 @@ const login = async function (username, password) {
 
 /**
  * Get stack descriptor by name
- * @param {string} token JWT token
+ * @param {string} token Portainer access token
  * @param {string} name Stack name
  * @returns {Stack} Stack descriptor
  */
@@ -48,15 +46,41 @@ const getStack = async function (token, name) {
  return (response.data && Array.isArray(response.data) && response.data.length == 1) ? response.data[0] : null;
 }
 
+/**
+ * Get Stack Docker compose file content
+ * @param {string} token Portainer access token
+ * @param {number} stackId 
+ */
+const getStackComposeFile = async function (token, stackId) {
+ // Get current stack file
+ const response = await axios.get(`${process.env.PORTAINER_API}/stacks/${stackId}/file`, {
+ headers: {
+ 'Authorization': `Bearer ${token}`,
+ },
+ });
+ 
+ // React to portainer error
+ if (response.err)
+ throw new Error(response.err);
+
+ return response.data.StackFileContent;
+}
+
 /**
  * Update stack descriptor
- * @param {string} token 
- * @param {Stack} stack 
+ * @param {string} token Portainer access token
+ * @param {Stack} stack stack descriptor
+ * @param {string} composeFile docker compose file contents
  */
-const updateStack = async function (token, stack) {
- const stackfile = await fs.promises.readFile(path.join(process.env.PORTAINER_DIR,`${stack.ProjectPath.replace('/data/', '')}/${stack.EntryPoint}`), 'utf8');
+const updateStack = async function (token, stack, composeFile = null) {
+ if (!composeFile)
+ composeFile = await getStackComposeFile(token, stack.Id);
+ 
+ if (!composeFile || composeFile.trim().length === 0)
+ throw new Error('Docker compose file empty');
+ 
  const response = await axios.put(`${process.env.PORTAINER_API}/stacks/${stack.Id}`, {
- 'StackFileContent': stackfile,
+ 'StackFileContent': composeFile,
  'Env': stack.Env,
  }, {
  headers: {