From: Victor Julien <victor@inliniac.net>
Date: Fri, 14 Jul 2017 09:05:51 +0000 (+0200)
Subject: gcc7: format-truncation fix for lua
X-Git-Tag: suricata-4.0.0~30
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=74f4f6dd633e53e7507399b715d07c264d96261f;p=thirdparty%2Fsuricata.git

gcc7: format-truncation fix for lua
---

diff --git a/src/output-lua.c b/src/output-lua.c
index 55e9110570..6d7d7a07b7 100644
--- a/src/output-lua.c
+++ b/src/output-lua.c
@@ -689,7 +689,11 @@ static OutputCtx *OutputLuaLogInitSub(ConfNode *conf, OutputCtx *parent_ctx)
     }
 
     char path[PATH_MAX] = "";
-    snprintf(path, sizeof(path),"%s%s%s", dir, strlen(dir) ? "/" : "", conf->val);
+    int ret = snprintf(path, sizeof(path),"%s%s%s", dir, strlen(dir) ? "/" : "", conf->val);
+    if (ret < 0 || ret == sizeof(path)) {
+        SCLogError(SC_ERR_SPRINTF,"failed to construct lua script path");
+        goto error;
+    }
     SCLogDebug("script full path %s", path);
 
     SCMutexLock(&lua_ctx->m);