Fix HMD_LDAP_TLS_CA not passing correctly and update README.md

Author: jackycute

README.md

@@ -130,15 +130,15 @@ Environment variables (will overwrite other server configs)
 | HMD_DROPBOX_CLIENTSECRET | no example | Dropbox API client secret |
 | HMD_GOOGLE_CLIENTID | no example | Google API client id |
 | HMD_GOOGLE_CLIENTSECRET | no example | Google API client secret |
-| HMD_LDAP_URL | ldap://example.com | url of LDAP server |
+| HMD_LDAP_URL | `ldap://example.com` | url of LDAP server |
 | HMD_LDAP_BINDDN | no example | bindDn for LDAP access |
 | HMD_LDAP_BINDCREDENTIALS | no example | bindCredentials for LDAP access |
-| HMD_LDAP_TOKENSECRET | supersecretkey | secret used for generating access/refresh tokens |
-| HMD_LDAP_SEARCHBASE | o=users,dc=example,dc=com | LDAP directory to begin search from |
-| HMD_LDAP_SEARCHFILTER | (uid={{username}}) | LDAP filter to search with |
+| HMD_LDAP_TOKENSECRET | `supersecretkey` | secret used for generating access/refresh tokens |
+| HMD_LDAP_SEARCHBASE | `o=users,dc=example,dc=com` | LDAP directory to begin search from |
+| HMD_LDAP_SEARCHFILTER | `(uid={{username}})` | LDAP filter to search with |
 | HMD_LDAP_SEARCHATTRIBUTES | no example | LDAP attributes to search with |
-| HMD_LDAP_TLS_CA | no example | Root CA for LDAP TLS in PEM format |
-| HMD_LDAP_PROVIDERNAME | My institution | Optional name to be displayed at login form indicating the LDAP provider | 
+| HMD_LDAP_TLS_CA | `server-cert.pem, root.pem` | Root CA for LDAP TLS in PEM format (use comma to separate) |
+| HMD_LDAP_PROVIDERNAME | `My institution` | Optional name to be displayed at login form indicating the LDAP provider | 
 | HMD_IMGUR_CLIENTID | no example | Imgur API client id |
 | HMD_EMAIL | `true` or `false` | set to allow email signin |
 | HMD_ALLOW_EMAIL_REGISTER | `true` or `false` | set to allow email register (only applied when email is set, default is `true`) |

lib/config.js

@@ -1,4 +1,5 @@
 // external modules
+var fs = require('fs');
 var path = require('path');
 
 // configs
@@ -123,9 +124,17 @@ if (process.env.HMD_LDAP_SEARCHATTRIBUTES)
     ldap.searchAttributes = process.env.HMD_LDAP_SEARCHATTRIBUTES;
 if (process.env.HMD_LDAP_TLS_CA) {
     var ca = {
-        ca: process.env.HMD_LDAP_TLS_CA
+        ca: process.env.HMD_LDAP_TLS_CA.split(',')
+    }
+    ldap.tlsOptions = ldap.tlsOptions ? Object.assign(ldap.tlsOptions, ca) : ca;
+    if (Array.isArray(ldap.tlsOptions.ca) && ldap.tlsOptions.ca.length > 0) {
+        var i, len, results;
+        results = [];
+        for (i = 0, len = ldap.tlsOptions.ca.length; i < len; i++) {
+            results.push(fs.readFileSync(ldap.tlsOptions.ca[i], 'utf8'));
+        }
+        ldap.tlsOptions.ca = results;
     }
-    ldap.tlsOptions = ldap.tlsOptions ? Object.assign(ldap.tlsOptions, ca) : ca
 }
 if (process.env.HMD_LDAP_PROVIDERNAME) {
     ldap.providerName = process.env.HMD_LDAP_PROVIDERNAME;