Merge pull request #12101 from owen-mc/go/gofmt-remove-confusing-error-message

Fix files that gofmt can't parse

go/ql/src/experimental/CWE-285/PamAuthBad.go

@@ -1,4 +1,9 @@
-func bad() error {
+package main
+
+import "fmt"
+
+func bad() (string, error) {
+	// ...
 	t, err := pam.StartFunc("", "username", func(s pam.Style, msg string) (string, error) {
 		switch s {
 		case pam.PromptEchoOff:

go/ql/src/experimental/CWE-285/PamAuthGood.go

@@ -1,4 +1,8 @@
-func good() error {
+package main
+
+import "fmt"
+
+func good() (string, error) {
 	t, err := pam.StartFunc("", "username", func(s pam.Style, msg string) (string, error) {
 		switch s {
 		case pam.PromptEchoOff:

go/ql/src/experimental/CWE-321/HardcodedKeysBad.go

@@ -1,9 +1,15 @@
-mySigningKey := []byte("AllYourBase")
+package main
 
-claims := &jwt.RegisteredClaims{
-	ExpiresAt: jwt.NewNumericDate(time.Unix(1516239022, 0)),
-	Issuer:    "test",
+import "time"
+
+func bad() {
+	mySigningKey := []byte("AllYourBase")
+
+	claims := &jwt.RegisteredClaims{
+		ExpiresAt: jwt.NewNumericDate(time.Unix(1516239022, 0)),
+		Issuer:    "test",
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	ss, err := token.SignedString(mySigningKey)
 }
-
-token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
-ss, err := token.SignedString(mySigningKey)

go/ql/src/experimental/CWE-321/HardcodedKeysGood.go

@@ -1,3 +1,10 @@
+package main
+
+import (
+	"math/big"
+	"time"
+)
+
 func GenerateCryptoString(n int) (string, error) {
 	const chars = "123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
 	ret := make([]byte, n)
@@ -11,13 +18,14 @@ func GenerateCryptoString(n int) (string, error) {
 	return string(ret), nil
 }
 
-mySigningKey := GenerateCryptoString(64)
+func good() {
+	mySigningKey := GenerateCryptoString(64)
 
+	claims := &jwt.RegisteredClaims{
+		ExpiresAt: jwt.NewNumericDate(time.Unix(1516239022, 0)),
+		Issuer:    "test",
+	}
 
-claims := &jwt.RegisteredClaims{
-	ExpiresAt: jwt.NewNumericDate(time.Unix(1516239022, 0)),
-	Issuer:    "test",
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	ss, err := token.SignedString(mySigningKey)
 }
-
-token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
-ss, err := token.SignedString(mySigningKey)