static ladders_rec_t *
init_reqrec(lwan_request_t *request, lwan_response_t *response)
{
ladders_rec_t *rec = NULL;
static const char errmsg[] = "{\"error\":\"bad parameter\"}";
const char *start = lwan_request_get_query_param(request, "start");
const char *goal = lwan_request_get_query_param(request, "goal");
if (!start || !goal) {
strbuf_set_static(response->buffer, errmsg, sizeof(errmsg) - 1);
return NULL;
}
strbuf_append_printf(response->buffer,
"{\"start\":\"%s\",\"goal\":\"%s\",",
start, goal);
if (start[5] != 0 || strlen(start) < 5 ||
goal[5] != 0 || strlen(goal) < 5) {
strbuf_append_str(response->buffer,
"\"path\":[],\"error\":\"Paramter start and "
"goal should be five-letter words.\"}", 0);
return NULL;
}
rec = malloc(sizeof(*rec));
strcpy(rec->start, start);
strcpy(rec->goal, goal);
rec->response = response;
strbuf_init(&rec->path);
return rec;
}
static int req_say_cb(lua_State *L)
{
lwan_request_t *request = userdata_as_request(L, 1);
size_t response_str_len;
const char *response_str = lua_tolstring(L, -1, &response_str_len);
strbuf_set_static(request->response.buffer, response_str, response_str_len);
lwan_response_send_chunk(request);
return 0;
}
static int req_send_event_cb(lua_State *L)
{
lwan_request_t *request = userdata_as_request(L, 1);
size_t event_str_len;
const char *event_str = lua_tolstring(L, -1, &event_str_len);
const char *event_name = lua_tostring(L, -2);
strbuf_set_static(request->response.buffer, event_str, event_str_len);
lwan_response_send_event(request, event_name);
return 0;
}