xml-validation 1st version

app/components/XMLReview.jsx

@@ -147,6 +147,13 @@ const allFileTypes = XMLFileTypes.concat(
 const transformXML = async (xmlUri, xslUri, param) => {
   const xml = await loadXML(xmlUri)
   const xsl = await loadXML(xslUri)
+  if (!xmlUri.startsWith('blob')) {
+    const validationErrors = await validateXML(xmlUri)
+    if (validationErrors !== 'success') {
+      const errMsg = JSON.stringify(validationErrors)
+      throw new Error(errMsg)
+    }
+  }
   if (typeof XSLTProcessor !== 'undefined') {
     const xsltProcessor = new XSLTProcessor()
     xsltProcessor.importStylesheet(xsl)
@@ -164,6 +171,27 @@ const transformXML = async (xmlUri, xslUri, param) => {
   }
 }
 
+const validateXML = async xml =>
+  new Promise((resolve, reject) => {
+    fetch('/xml/validate/api/post', {
+      method: 'POST',
+      headers: {
+        Accept: 'application/json',
+        Authorization: `Bearer ${window.localStorage.getItem('token')}`,
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        xml,
+        dtd: 'app/assets/xsl/dtd/archivearticle3.dtd',
+      }),
+    })
+      .then(response => response.json())
+      .then(data => resolve(data))
+      .catch(err => {
+        reject(err)
+      })
+  })
+
 const loadXML = url =>
   new Promise((resolve, reject) => {
     let request = ''
@@ -224,9 +252,9 @@ class EPMCTagged extends React.Component {
     const { files } = currentVersion
     const xml = files.find(file => file.type === 'PMC')
     if (xml) {
-      const nxml = await transformXML(xml.url, nxmlXSL).catch(err => {
+      const nxml = await transformXML(xml.url, nxmlXSL, null).catch(err => {
         if (err) {
-          this.setError('XML is invalid/malformed.')
+          this.setError(err.message)
         }
       })
       if (nxml) {
@@ -257,7 +285,7 @@ class EPMCTagged extends React.Component {
           filelist,
         ).catch(err => {
           if (err) {
-            this.setError('XML is invalid/malformed.')
+            this.setError(err)
           }
         })
         const htmlBlob = new Blob([html.documentElement.outerHTML], {

config/components.json

@@ -14,5 +14,6 @@
   "./server/bulk",
   "./server/eutils",
   "./server/email",
+  "./server/xmlValidation",
   "./server/db"
 ]

package.json

@@ -35,6 +35,7 @@
     "minio": "^6.0.0",
     "moment": "^2.18.1",
     "node-fetch": "^2.2.0",
+    "node-libxml": "^3.2.3",
     "pdfjs-dist": "^2.0.489",
     "prop-types": "^15.5.10",
     "properties-reader": "0.0.16",

server/xmlValidation/api.js

+const passport = require('passport')
+const Libxml = require('node-libxml')
+const config = require('config')
+const fetch = require('node-fetch')
+
+const pubsweetServer = config.get('pubsweet-server.baseUrl')
+const authBearer = passport.authenticate('bearer', { session: false })
+
+const fetchFile = (fileUri, token) => {
+  const url = `${pubsweetServer}${fileUri}`
+  return new Promise((resolve, reject) => {
+    fetch(url, {
+      method: 'GET',
+      headers: {
+        Authorization: `${token}`,
+        Accept: 'application/xml',
+      },
+    })
+      .then(data => {
+        resolve(data.text())
+      })
+      .catch(err => {
+        reject(err)
+      })
+  })
+}
+
+module.exports = app => {
+  app.post('/xml/validate/api/post', authBearer, (req, res) => {
+    res.set({ 'Content-Type': 'application/json' })
+
+    const libxml = new Libxml()
+    fetchFile(req.body.xml, req.headers.authorization)
+      .then(xml => {
+        const xmlIsWellformed = libxml.loadXmlFromString(xml)
+
+        libxml.loadDtds([req.body.dtd])
+
+        const testDefaultV = libxml.validateAgainstDtds()
+
+        if (xmlIsWellformed && testDefaultV) {
+          res.json('success')
+        } else {
+          res.send(
+            JSON.stringify(libxml.validationDtdErrors[req.body.dtd], [
+              'column',
+              'level',
+              'line',
+              'message',
+            ]),
+          )
+        }
+      })
+      .catch(err => {
+        res.send(JSON.stringify(err))
+      })
+  })
+}

server/xmlValidation/index.js

+module.exports = {
+  backend: () => require('./api'),
+}

server/xmlValidation/package-lock.json

+{
+  "name": "xpub-epmc-xmlValidation",
+  "version": "1.0.0",
+  "lockfileVersion": 1
+}

server/xmlValidation/package.json

+{
+  "name": "xpub-epmc-xmlValidation",
+  "version": "1.0.0",
+  "description": "API for validating against DTD",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "nm",
+  "license": "ISC"
+}