Feature/custom locations (#74)

* New feature: custom locations

* Custom locations: exteding config generator

* Custom locations: refactoring

* Fixing proxy_host table on small screens

* Custom locations: translations

* Custom locations bugfix

* Custom locations bugfix

* PR #74 fixes

src/backend/internal/nginx.js

@@ -130,6 +130,35 @@ const internalNginx = {
         return '/data/nginx/' + host_type + '/' + host_id + '.conf';
     },
 
+    /**
+     * Generates custom locations
+     * @param   {Object}  host 
+     * @returns {Promise}
+     */
+    renderLocations: (host) => {
+        return new Promise((resolve, reject) => {
+            let template;
+
+            try {
+                template = fs.readFileSync(__dirname + '/../templates/_location.conf', {encoding: 'utf8'});
+            } catch (err) {
+                reject(new error.ConfigurationError(err.message));
+                return;
+            }
+
+            let renderer = new Liquid();
+            let renderedLocations = '';
+
+            const locationRendering = async () => {
+                for (let i = 0; i < host.locations.length; i++) {
+                    renderedLocations += await renderer.parseAndRender(template, host.locations[i]);
+                }
+            }
+
+            locationRendering().then(() => resolve(renderedLocations));
+        });
+    },
+
     /**
      * @param   {String}  host_type
      * @param   {Object}  host
@@ -157,6 +186,9 @@ const internalNginx = {
                 return;
             }
 
+            let locationsPromise;
+            let origLocations;
+
             // Manipulate the data a bit before sending it to the template
             if (host_type !== 'default') {
                 host.use_default_location = true;
@@ -165,24 +197,38 @@ const internalNginx = {
                 }
             }
 
-            renderEngine
-                .parseAndRender(template, host)
-                .then(config_text => {
-                    fs.writeFileSync(filename, config_text, {encoding: 'utf8'});
-
-                    if (debug_mode) {
-                        logger.success('Wrote config:', filename, config_text);
-                    }
-
-                    resolve(true);
-                })
-                .catch(err => {
-                    if (debug_mode) {
-                        logger.warn('Could not write ' + filename + ':', err.message);
-                    }
-
-                    reject(new error.ConfigurationError(err.message));
+            if (host.locations) {
+                origLocations = [].concat(host.locations);
+                locationsPromise = internalNginx.renderLocations(host).then((renderedLocations) => {
+                    host.locations = renderedLocations;
                 });
+            } else {
+                locationsPromise = Promise.resolve();
+            }
+
+            locationsPromise.then(() => {
+                renderEngine
+                    .parseAndRender(template, host)
+                    .then(config_text => {
+                        fs.writeFileSync(filename, config_text, {encoding: 'utf8'});
+
+                        if (debug_mode) {
+                            logger.success('Wrote config:', filename, config_text);
+                        }
+
+                        // Restore locations array
+                        host.locations = origLocations;
+
+                        resolve(true);
+                    })
+                    .catch(err => {
+                        if (debug_mode) {
+                            logger.warn('Could not write ' + filename + ':', err.message);
+                        }
+
+                        reject(new error.ConfigurationError(err.message));
+                    });
+            });
         });
     },
 

src/backend/migrations/20190215115310_customlocations.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const migrate_name = 'custom_locations';
+const logger       = require('../logger').migrate;
+
+/**
+ * Migrate
+ * Extends proxy_host table with locations field
+ *
+ * @see http://knexjs.org/#Schema
+ *
+ * @param   {Object}  knex
+ * @param   {Promise} Promise
+ * @returns {Promise}
+ */
+exports.up = function (knex/*, Promise*/) {
+    logger.info('[' + migrate_name + '] Migrating Up...');
+
+    return knex.schema.table('proxy_host', function (proxy_host) {
+        proxy_host.json('locations');
+    })
+        .then(() => {
+            logger.info('[' + migrate_name + '] proxy_host Table altered');
+        })
+};
+
+/**
+ * Undo Migrate
+ *
+ * @param   {Object}  knex
+ * @param   {Promise} Promise
+ * @returns {Promise}
+ */
+exports.down = function (knex, Promise) {
+    logger.warn('[' + migrate_name + '] You can\'t migrate down this one.');
+    return Promise.resolve(true);
+};

src/backend/models/proxy_host.js

@@ -47,7 +47,7 @@ class ProxyHost extends Model {
     }
 
     static get jsonAttributes () {
-        return ['domain_names', 'meta'];
+        return ['domain_names', 'meta', 'locations'];
     }
 
     static get relationMappings () {

src/backend/schema/endpoints/proxy-hosts.json

@@ -69,6 +69,41 @@
     },
     "meta": {
       "type": "object"
+    },
+    "locations": {
+      "type": "array",
+      "minItems": 0,
+      "items": {
+        "type": "object",
+        "required": [
+          "forward_scheme",
+          "forward_host",
+          "forward_port",
+          "path"
+        ],
+        "additionalProperties": false,
+        "properties": {
+          "id": {
+            "type": ["integer", "null"]
+          },
+          "path": {
+            "type": "string",
+            "minLength": 1
+          },
+          "forward_scheme": {
+            "$ref": "#/definitions/forward_scheme"
+          },
+          "forward_host": {
+            "$ref": "#/definitions/forward_host"
+          },
+          "forward_port": {
+            "$ref": "#/definitions/forward_port"
+          },
+          "advanced_config": {
+            "type": "string"
+          }
+        }
+      }
     }
   },
   "properties": {
@@ -128,6 +163,9 @@
     },
     "meta": {
       "$ref": "#/definitions/meta"
+    },
+    "locations": {
+      "$ref": "#/definitions/locations"
     }
   },
   "links": [
@@ -215,6 +253,9 @@
           },
           "meta": {
             "$ref": "#/definitions/meta"
+          },
+          "locations": {
+            "$ref": "#/definitions/locations"
           }
         }
       },
@@ -285,6 +326,9 @@
           },
           "meta": {
             "$ref": "#/definitions/meta"
+          },
+          "locations": {
+            "$ref": "#/definitions/locations"
           }
         }
       },

src/backend/templates/_location.conf

@@ -0,0 +1,8 @@
+  location {{ path }} {
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Scheme $scheme;
+    proxy_set_header X-Forwarded-Proto  $scheme;
+    proxy_set_header X-Forwarded-For    $remote_addr;
+    proxy_pass       {{ forward_scheme }}://{{ forward_host }}:{{ forward_port }};
+    {{ advanced_config }}
+  }

src/backend/templates/proxy_host.conf

@@ -16,7 +16,10 @@ server {
 
 {{ advanced_config }}
 
+{{ locations }}
+
 {% if use_default_location %}
+
   location / {
     {%- if access_list_id > 0 -%}
     # Access List