From b9e0b9df446afa8a84d839bcf90b43d6504fc413 Mon Sep 17 00:00:00 2001 From: Maxim Dounin Date: Mon, 19 Oct 2015 21:28:02 +0300 Subject: Fixed handling of empty root. Previously, a configuration with "root" set to an empty string tried test a character at clcf->root.data[-1]. Additional test added to make sure this won't happen. Reported by Markus Linnala, see http://mailman.nginx.org/pipermail/nginx-devel/2015-August/007210.html. --- src/http/ngx_http_core_module.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c index 36f00f61e..7a2960830 100644 --- a/src/http/ngx_http_core_module.c +++ b/src/http/ngx_http_core_module.c @@ -4489,7 +4489,9 @@ ngx_http_core_root(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) clcf->alias = alias ? clcf->name.len : 0; clcf->root = value[1]; - if (!alias && clcf->root.data[clcf->root.len - 1] == '/') { + if (!alias && clcf->root.len > 0 + && clcf->root.data[clcf->root.len - 1] == '/') + { clcf->root.len--; } -- cgit