Add PV[name,value] ACS check

WHATSNEW.md

@@ -3,6 +3,7 @@ This document attempts to track **major** changes and additions in ENiGMA½. For
 
 ## 0.0.12-beta
 * The `master` branch has become mainline. What this means to users is `git pull` will always give you the latest and greatest. Make sure to read [Updating](/docs/admin/updating.md) and keep an eye on `WHATSNEW.md` (this file) and [UPGRADE](UPGRADE.md)! See also [ticket #276](https://github.com/NuSkooler/enigma-bbs/issues/276).
+* New `PV` ACS check for arbitrary user properties. See [ACS](/docs/configuration/acs.md) for details.
 
 ## 0.0.11-beta
 * Upgraded from `alpha` to `beta` -- The software is far along and mature enough at this point!

core/acs_parser.js

@@ -1055,6 +1055,14 @@ function peg$parse(input, options) {
   					}
   					const points = user.getPropertyAsNumber(UserProps.AchievementTotalPoints) || 0;
   					return !isNan(value) && points >= value;
+  				},
+  				PV	: function userPropValue() {
+  					if (!user || !Array.isArray(value) || value.length !== 2) {
+  						return false;
+  					}
+  					const [propName, propValue] = value;
+  					const actualPropValue = user.getProperty(propName);
+  					return actualPropValue === propValue;
   				}
   			}[acsCode](value);
   		} catch (e) {

docs/configuration/acs.md

@@ -39,9 +39,10 @@ The following are ACS codes available as of this writing:
 | AP<i>achievementPoints</i> | User has >= _achievementPoints_ achievement points |
 | AF<i>authFactor</i> | User's current *Authentication Factor* is >= _authFactor_. Authentication factor 1 refers to username + password (or PubKey) while factor 2 refers to 2FA such as One-Time-Password authentication. |
 | AR<i>authFactorReq</i> | Current user **requires** an Authentication Factor >= _authFactorReq_ |
+| PV[_name,_value_] | Checks that the property by _name_ for the current user is exactly _value_. This ACS allows arbitrary user property values to be checked. For example, `PV[message_conf,local]` checks that the user is currently in the "local" message conference.
 
 ## ACS Strings
-ACS strings are one or more ACS codes in addition to some basic language semantics. 
+ACS strings are one or more ACS codes in addition to some basic language semantics.
 
 The following logical operators are supported:
 * `!` NOT

misc/acs_parser.pegjs

@@ -211,6 +211,14 @@
 					}
 					const points = user.getPropertyAsNumber(UserProps.AchievementTotalPoints) || 0;
 					return !isNan(value) && points >= value;
+				},
+				PV	: function userPropValue() {
+					if (!user || !Array.isArray(value) || value.length !== 2) {
+						return false;
+					}
+					const [propName, propValue] = value;
+					const actualPropValue = user.getProperty(propName);
+					return actualPropValue === propValue;
 				}
 			}[acsCode](value);
 		} catch (e) {