Fixing help links

model/config.go

@@ -343,26 +343,46 @@ func (o *Config) SetDefaults() {
 		*o.EmailSettings.PushNotificationContents = GENERIC_NOTIFICATION
 	}
 
+	if !IsSafeLink(o.SupportSettings.TermsOfServiceLink) {
+		o.SupportSettings.TermsOfServiceLink = nil
+	}
+
 	if o.SupportSettings.TermsOfServiceLink == nil {
 		o.SupportSettings.TermsOfServiceLink = new(string)
 		*o.SupportSettings.TermsOfServiceLink = "/static/help/terms.html"
 	}
 
+	if !IsSafeLink(o.SupportSettings.PrivacyPolicyLink) {
+		o.SupportSettings.PrivacyPolicyLink = nil
+	}
+
 	if o.SupportSettings.PrivacyPolicyLink == nil {
 		o.SupportSettings.PrivacyPolicyLink = new(string)
 		*o.SupportSettings.PrivacyPolicyLink = "/static/help/privacy.html"
 	}
 
+	if !IsSafeLink(o.SupportSettings.AboutLink) {
+		o.SupportSettings.AboutLink = nil
+	}
+
 	if o.SupportSettings.AboutLink == nil {
 		o.SupportSettings.AboutLink = new(string)
 		*o.SupportSettings.AboutLink = "/static/help/about.html"
 	}
 
+	if !IsSafeLink(o.SupportSettings.HelpLink) {
+		o.SupportSettings.HelpLink = nil
+	}
+
 	if o.SupportSettings.HelpLink == nil {
 		o.SupportSettings.HelpLink = new(string)
 		*o.SupportSettings.HelpLink = "/static/help/help.html"
 	}
 
+	if !IsSafeLink(o.SupportSettings.ReportAProblemLink) {
+		o.SupportSettings.ReportAProblemLink = nil
+	}
+
 	if o.SupportSettings.ReportAProblemLink == nil {
 		o.SupportSettings.ReportAProblemLink = new(string)
 		*o.SupportSettings.ReportAProblemLink = "/static/help/report_problem.html"

model/utils.go

@@ -386,3 +386,17 @@ func IsValidHttpsUrl(rawUrl string) bool {
 
 	return true
 }
+
+func IsSafeLink(link *string) bool {
+	if link != nil {
+		if IsValidHttpUrl(*link) {
+			return true
+		} else if strings.HasPrefix(*link, "/") {
+			return true
+		} else {
+			return false
+		}
+	}
+
+	return true
+}