static liHandlerResult expire(liVRequest *vr, gpointer param, gpointer *context) {
struct tm tm;
time_t expire_date;
guint len;
gint max_age;
GString *date_str = vr->wrk->tmp_str;
expire_rule *rule = param;
guint num = rule->num;
time_t now = (time_t)li_cur_ts(vr->wrk);
UNUSED(context);
if (rule->base == EXPIRE_ACCESS) {
expire_date = now + num;
max_age = num;
} else {
/* modification */
struct stat st;
gint err;
if (!vr->physical.path->len)
return LI_HANDLER_GO_ON;
switch (li_stat_cache_get(vr, vr->physical.path, &st, &err, NULL)) {
case LI_HANDLER_GO_ON: break;
case LI_HANDLER_WAIT_FOR_EVENT: return LI_HANDLER_WAIT_FOR_EVENT;
default: return LI_HANDLER_GO_ON;
}
expire_date = st.st_mtime + num;
if (expire_date < now)
expire_date = now;
max_age = expire_date - now;
}
/* format date */
g_string_set_size(date_str, 255);
if (!gmtime_r(&expire_date, &tm)) {
VR_ERROR(vr, "gmtime_r(%"G_GUINT64_FORMAT") failed: %s", (guint64)expire_date, g_strerror(errno));
return LI_HANDLER_GO_ON;
}
len = strftime(date_str->str, date_str->allocated_len, "%a, %d %b %Y %H:%M:%S GMT", &tm);
if (len == 0)
return LI_HANDLER_GO_ON;
g_string_set_size(date_str, len);
/* finally set the headers */
li_http_header_overwrite(vr->response.headers, CONST_STR_LEN("Expires"), GSTR_LEN(date_str));
g_string_truncate(date_str, 0);
g_string_append_len(date_str, CONST_STR_LEN("max-age="));
li_string_append_int(date_str, max_age);
li_http_header_append(vr->response.headers, CONST_STR_LEN("Cache-Control"), GSTR_LEN(date_str));
return LI_HANDLER_GO_ON;
}
gboolean li_response_send_headers(liConnection *con) {
GString *head;
liVRequest *vr = con->mainvr;
if (vr->response.http_status < 100 || vr->response.http_status > 999) {
VR_ERROR(vr, "wrong status: %i", vr->response.http_status);
return FALSE;
}
head = g_string_sized_new(8*1024-1);
if (0 == con->out->length && con->mainvr->backend == NULL
&& vr->response.http_status >= 400 && vr->response.http_status < 600) {
li_response_send_error_page(con);
}
if ((vr->response.http_status >= 100 && vr->response.http_status < 200) ||
vr->response.http_status == 204 ||
vr->response.http_status == 205 ||
vr->response.http_status == 304) {
/* They never have a content-body/length */
li_chunkqueue_reset(con->out);
con->out->is_closed = TRUE;
con->raw_out->is_closed = TRUE;
} else if (con->out->is_closed) {
if (vr->request.http_method != LI_HTTP_METHOD_HEAD || con->out->length > 0) {
/* do not send content-length: 0 if backend already skipped content generation for HEAD */
g_string_printf(con->wrk->tmp_str, "%"L_GOFFSET_FORMAT, con->out->length);
li_http_header_overwrite(vr->response.headers, CONST_STR_LEN("Content-Length"), GSTR_LEN(con->wrk->tmp_str));
}
} else if (con->info.keep_alive && vr->request.http_version == LI_HTTP_VERSION_1_1) {
/* TODO: maybe someone set a content length header? */
if (!(vr->response.transfer_encoding & LI_HTTP_TRANSFER_ENCODING_CHUNKED)) {
vr->response.transfer_encoding |= LI_HTTP_TRANSFER_ENCODING_CHUNKED;
li_http_header_append(vr->response.headers, CONST_STR_LEN("Transfer-Encoding"), CONST_STR_LEN("chunked"));
}
} else {
/* Unknown content length, no chunked encoding */
con->info.keep_alive = FALSE;
}
if (vr->request.http_method == LI_HTTP_METHOD_HEAD) {
/* content-length is set, but no body */
li_chunkqueue_reset(con->out);
con->out->is_closed = TRUE;
con->raw_out->is_closed = TRUE;
}
/* Status line */
if (vr->request.http_version == LI_HTTP_VERSION_1_1) {
g_string_append_len(head, CONST_STR_LEN("HTTP/1.1 "));
if (!con->info.keep_alive)
li_http_header_overwrite(vr->response.headers, CONST_STR_LEN("Connection"), CONST_STR_LEN("close"));
} else {
g_string_append_len(head, CONST_STR_LEN("HTTP/1.0 "));
if (con->info.keep_alive)
li_http_header_overwrite(vr->response.headers, CONST_STR_LEN("Connection"), CONST_STR_LEN("keep-alive"));
}
{
guint len;
gchar status_str[4];
gchar *str = li_http_status_string(vr->response.http_status, &len);
li_http_status_to_str(vr->response.http_status, status_str);
status_str[3] = ' ';
g_string_append_len(head, status_str, 4);
g_string_append_len(head, str, len);
g_string_append_len(head, CONST_STR_LEN("\r\n"));
}
/* Append headers */
{
liHttpHeader *header;
GList *iter;
gboolean have_date = FALSE, have_server = FALSE;
for (iter = g_queue_peek_head_link(&vr->response.headers->entries); iter; iter = g_list_next(iter)) {
header = (liHttpHeader*) iter->data;
g_string_append_len(head, GSTR_LEN(header->data));
g_string_append_len(head, CONST_STR_LEN("\r\n"));
if (!have_date && li_http_header_key_is(header, CONST_STR_LEN("date"))) have_date = TRUE;
if (!have_server && li_http_header_key_is(header, CONST_STR_LEN("server"))) have_server = TRUE;
}
if (!have_date) {
GString *d = li_worker_current_timestamp(con->wrk, LI_GMTIME, LI_TS_FORMAT_HEADER);
/* HTTP/1.1 requires a Date: header */
g_string_append_len(head, CONST_STR_LEN("Date: "));
g_string_append_len(head, GSTR_LEN(d));
g_string_append_len(head, CONST_STR_LEN("\r\n"));
}
if (!have_server) {
GString *tag = CORE_OPTIONPTR(LI_CORE_OPTION_SERVER_TAG).string;
if (tag->len) {
g_string_append_len(head, CONST_STR_LEN("Server: "));
g_string_append_len(head, GSTR_LEN(tag));
g_string_append_len(head, CONST_STR_LEN("\r\n"));
}
}
}
g_string_append_len(head, CONST_STR_LEN("\r\n"));
li_chunkqueue_append_string(con->raw_out, head);
return TRUE;
}
