Introduced length limits

arn/search/All.go

@@ -1,16 +1,24 @@
 package search
 
 import (
+	"fmt"
+
 	"github.com/aerogo/flow"
 	"github.com/animenotifier/notify.moe/arn"
 )
 
-// MinimumStringSimilarity is the minimum JaroWinkler distance we accept for search results.
-const MinimumStringSimilarity = 0.89
+// MinStringSimilarity is the minimum JaroWinkler distance we accept for search results.
+const MinStringSimilarity = 0.89
+
+// MaxSearchTermLength defines how long the search term can be.
+const MaxSearchTermLength = 100
 
 // popularityDamping reduces the factor of popularity in search results.
 const popularityDamping = 0.0009
 
+// ErrTermTooLong is used when the search term is too long
+var ErrTermTooLong = fmt.Errorf("Search term is too long (maximum %d characters)", MaxSearchTermLength)
+
 // Result ...
 type Result struct {
 	obj        interface{}
@@ -23,6 +31,10 @@ func All(term string, maxUsers, maxAnime, maxPosts, maxThreads, maxTracks, maxCh
 		return nil, nil, nil, nil, nil, nil, nil, nil
 	}
 
+	if len(term) > MaxSearchTermLength {
+		return nil, nil, nil, nil, nil, nil, nil, nil
+	}
+
 	var (
 		userResults      []*arn.User
 		animeResults     []*arn.Anime