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comparison src/http/v3/ngx_http_v3_request.c @ 9275:199dc0d6b05b

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Added max_headers directive. The directive limits the number of request headers accepted from clients. While the total amount of headers is believed to be sufficiently limited by the existing buffer size limits (client_header_buffer_size and large_client_header_buffers), the additional limit on the number of headers might be beneficial to better protect backend servers. Requested by Maksim Yevmenkin.
author Maxim Dounin <mdounin@mdounin.ru>
date Fri, 24 May 2024 00:20:01 +0300
parents 388a801e9bb9
children d9fe808c1841
comparison
equal deleted inserted replaced
9274:46ecad404a29 9275:199dc0d6b05b
655 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); 655 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
656 return NGX_ERROR; 656 return NGX_ERROR;
657 } 657 }
658 658
659 } else { 659 } else {
660 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
661
662 if (r->headers_in.count++ >= cscf->max_headers) {
663 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
664 "client sent too many header lines");
665 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
666 return NGX_ERROR;
667 }
668
660 h = ngx_list_push(&r->headers_in.headers); 669 h = ngx_list_push(&r->headers_in.headers);
661 if (h == NULL) { 670 if (h == NULL) {
662 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); 671 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
663 return NGX_ERROR; 672 return NGX_ERROR;
664 } 673 }