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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_router.h>
#include <nxt_http.h>
static void nxt_http_request_send_error_body(nxt_task_t *task, void *r,
void *data);
static const nxt_http_request_state_t nxt_http_request_send_error_body_state;
static const char error[] =
"<!DOCTYPE html>"
"<title>Error %03d</title>"
"<p>Error %03d.\r\n";
/* Two %03d (4 chars) patterns are replaced by status code (3 chars). */
#define NXT_HTTP_ERROR_LEN (nxt_length(error) - 2)
void
nxt_http_request_error(nxt_task_t *task, nxt_http_request_t *r,
nxt_http_status_t status)
{
nxt_http_field_t *content_type;
nxt_debug(task, "http request error: %d", status);
if (r->header_sent || r->error) {
goto fail;
}
r->error = (status == NXT_HTTP_INTERNAL_SERVER_ERROR);
r->status = status;
r->resp.fields = nxt_list_create(r->mem_pool, 8, sizeof(nxt_http_field_t));
if (nxt_slow_path(r->resp.fields == NULL)) {
goto fail;
}
content_type = nxt_list_zero_add(r->resp.fields);
if (nxt_slow_path(content_type == NULL)) {
goto fail;
}
nxt_http_field_set(content_type, "Content-Type", "text/html");
r->resp.content_length = NULL;
r->resp.content_length_n = NXT_HTTP_ERROR_LEN;
r->state = &nxt_http_request_send_error_body_state;
r->body_handler = nxt_http_request_send_error_body;
nxt_http_request_header_send(task, r);
return;
fail:
nxt_http_request_error_handler(task, r, r->proto.any);
}
static const nxt_http_request_state_t nxt_http_request_send_error_body_state
nxt_aligned(64) =
{
.error_handler = nxt_http_request_error_handler,
};
static void
nxt_http_request_send_error_body(nxt_task_t *task, void *obj, void *data)
{
nxt_buf_t *out;
nxt_http_request_t *r;
r = obj;
nxt_debug(task, "http request send error body");
out = nxt_http_buf_mem(task, r, NXT_HTTP_ERROR_LEN);
if (nxt_slow_path(out == NULL)) {
goto fail;
}
out->mem.free = nxt_sprintf(out->mem.pos, out->mem.end, error,
r->status, r->status);
out->next = nxt_http_buf_last(r);
nxt_http_request_send(task, r, out);
return;
fail:
nxt_http_request_error_handler(task, r, r->proto.any);
}
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