const failable internalSubRequest()

in modules/http/httpd.hpp [630:690]

• 50 lines of code
• 2 McCabe index (conditional complexity)

const failable<request_rec*> internalSubRequest(const string& nr_uri, request_rec* const r) {
    if (ap_is_recursion_limit_exceeded(r))
        return mkfailure<request_rec*>("Redirect recursion limit exceeded", HTTP_INTERNAL_SERVER_ERROR);

    // Create a new sub pool
    apr_pool_t *nrp;
    apr_pool_create(&nrp, r->pool);
    apr_pool_tag(nrp, "subrequest");

    // Create a new POST request
    request_rec* nr = (request_rec*)apr_pcalloc(nrp, sizeof(request_rec));
    nr->connection = r->connection;
    nr->server = r->server;
    nr->pool = nrp;
    nr->method = "POST";
    nr->method_number = M_POST;
    nr->allowed_methods = ap_make_method_list(nr->pool, 2);
    ap_parse_uri(nr, apr_pstrdup(nr->pool, c_str(nr_uri)));
    nr->filename = apr_pstrdup(nr->pool, c_str(string("/subreq:") + nr_uri));
    nr->request_config = ap_create_request_config(r->pool);
    nr->per_dir_config = r->server->lookup_defaults;

    // Inherit some of the protocol info from the parent request
    nr->the_request = r->the_request;
    nr->hostname = r->hostname;
    nr->request_time = r->request_time;
    nr->allowed = r->allowed;
    nr->status = HTTP_OK;
    nr->assbackwards = r->assbackwards;
    nr->header_only = r->header_only;
    nr->protocol = const_cast<char*>("INCLUDED");
    nr->hostname = r->hostname;
    nr->request_time = r->request_time;
    nr->main = r;
    nr->headers_in = apr_table_make(r->pool, 12);
    nr->headers_out = apr_table_make(r->pool, 12);
    nr->err_headers_out = apr_table_make(nr->pool, 5);
    nr->subprocess_env = r->subprocess_env;
    nr->subprocess_env  = apr_table_copy(nr->pool, r->subprocess_env);
    nr->notes = apr_table_make(r->pool, 5);
    nr->htaccess = r->htaccess;
    nr->no_cache = r->no_cache;
    nr->expecting_100 = r->expecting_100;
    nr->no_local_copy = r->no_local_copy;
    nr->read_length = 0;
    nr->vlist_validator = r->vlist_validator;
    nr->user = r->user;

    // Setup input and output filters
    nr->proto_output_filters = r->proto_output_filters;
    nr->proto_input_filters = r->proto_input_filters;
    nr->output_filters = nr->proto_output_filters;
    nr->input_filters = nr->proto_input_filters;
    ap_add_output_filter_handle(ap_subreq_core_filter_handle, NULL, nr, nr->connection);

    // Run create request hook
    ap_run_create_request(nr);
    nr->used_path_info = AP_REQ_DEFAULT_PATH_INFO;

    return nr;
}