Add an option to always use HTTP 200 on the /v3 API

HTTPS API.md

@@ -22,6 +22,9 @@ encounters errors processing your request, this will be false and an error code
 will be added to the response. Otherwise, the response data (if any) will be in
 the `result` key.
 
+The `X-Force-OK` header can be set to `true` to force a `200 OK` reply even
+when an error occurs.
+
 ### Examples
 
 ```json

lurkcoin/api/https-core.go

@@ -172,3 +172,12 @@ func MakeHTTPRouter(db lurkcoin.Database, config *Config) *httprouter.Router {
 	addV2API(router, db, config.Name)
 	return router
 }
+
+func isYes(s string) bool {
+	switch strings.ToLower(s) {
+	case "true", "yes", "y", "1":
+		return true
+	default:
+		return false
+	}
+}

lurkcoin/api/v2.go

@@ -157,15 +157,6 @@ func v2Post(router *httprouter.Router, db lurkcoin.Database, url string,
 	router.POST(url, f2)
 }
 
-func v2IsYes(s string) bool {
-	switch strings.ToLower(s) {
-	case "true", "yes", "y", "1":
-		return true
-	default:
-		return false
-	}
-}
-
 func addV2API(router *httprouter.Router, db lurkcoin.Database,
 	lurkcoinName string) {
 
@@ -205,7 +196,7 @@ func addV2API(router *httprouter.Router, db lurkcoin.Database,
 			}
 
 			_, err = r.Server.Pay("", target, targetServer,
-				amount, v2IsYes(f.Get("local_currency")), true)
+				amount, isYes(f.Get("local_currency")), true)
 			if err != nil {
 				return nil, err
 			}
@@ -284,7 +275,7 @@ func addV2API(router *httprouter.Router, db lurkcoin.Database,
 					transaction.String(),
 				}
 			}
-			if v2IsYes(f.Get("as_object")) {
+			if isYes(f.Get("as_object")) {
 				_, exc := r.Server.GetExchangeRate(c1, false)
 				return map[string]interface{}{
 					"exchange_rate": json.RawMessage(exc.String()),

lurkcoin/api/v3.go

@@ -56,8 +56,14 @@ func v3WrapHTTPHandler(db lurkcoin.Database, autoLogin bool,
 			var c int
 			res["success"] = false
 			res["error"], res["message"], c = lurkcoin.LookupError(err.Error())
+
+			// Workaround for limitations of Minetest's HTTP API
+			if isYes(r.Header.Get("X-Force-OK")) {
+				w.WriteHeader(http.StatusOK)
+			} else {
 				w.WriteHeader(c)
 			}
+		}
 
 		// TODO: Possibly write JSON directly to the ResponseWriter.
 		raw, enc_err := json.Marshal(res)

lurkcoin/misc.go

@@ -35,7 +35,7 @@ import (
 )
 
 const SYMBOL = "¤"
-const VERSION = "3.0.4"
+const VERSION = "3.0.5"
 
 // Note that public source code is required by the AGPL
 const SOURCE_URL = "https://github.com/luk3yx/lurkcoin-core"