[fix] metrics name compare with length

because ngx_str_t->data is not guarantee to terminate with '\n'

Signed-off-by: Liu Lantao <[email protected]>

Author: Lax

src/ngx_http_accounting_worker_process.c

@@ -100,7 +100,7 @@ ngx_http_accounting_handler(ngx_http_request_t *r)
         if (metrics == NULL)
             return NGX_ERROR;
 
-        if (ngx_strcmp(accounting_id->data, metrics->name.data) != 0)
+        if (ngx_rstrncmp(accounting_id->data, metrics->name.data, accounting_id->len) != 0)
             return NGX_ERROR;
 
         metrics->nr_statuses = ngx_pcalloc(ngxta_current_metrics->pool,

src/ngxta_period_metrics.c

@@ -93,7 +93,7 @@ ngxta_period_rbtree_lookup_metrics(ngxta_period_rbtree_t *period,
         }
 
         n = (ngxta_metrics_rbnode_t *) node;
-        rc = ngx_strcmp(name->data, n->name.data);
+        rc = ngx_rstrncmp(name->data, n->name.data, name->len);
 
         if (rc < 0) {
             node = node->left;