circuitpython/ports/espressif/common-hal/socketpool/SocketPool.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
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#include "shared-bindings/socketpool/SocketPool.h"
#include "common-hal/socketpool/Socket.h"
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#include "py/runtime.h"
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#include "shared-bindings/wifi/__init__.h"
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#include "components/lwip/lwip/src/include/lwip/netdb.h"
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#include "bindings/espidf/__init__.h"
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void common_hal_socketpool_socketpool_construct(socketpool_socketpool_obj_t *self, mp_obj_t radio) {
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if (radio != MP_OBJ_FROM_PTR(&common_hal_wifi_radio_obj)) {
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mp_raise_ValueError(translate("SocketPool can only be used with wifi.radio"));
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}
}
// common_hal_socketpool_socket is in socketpool/Socket.c to centralize open socket tracking.
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mp_obj_t common_hal_socketpool_socketpool_gethostbyname(socketpool_socketpool_obj_t *self,
const char *host) {
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// As of 2022, the version of lwip in esp-idf does not handle the
// trailing-dot syntax of domain names, so emulate it.
// Remove this once https://github.com/espressif/esp-idf/issues/10013 has
// been implemented
size_t strlen_host = strlen(host);
if (strlen_host && host[strlen_host - 1] == '.') {
mp_obj_t nodot = mp_obj_new_str(host, strlen_host - 1);
host = mp_obj_str_get_str(nodot);
}
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const struct addrinfo hints = {
.ai_family = AF_INET,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *res;
int err = getaddrinfo(host, NULL, &hints, &res);
if (err != 0 || res == NULL) {
return mp_const_none;
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
struct in_addr *addr = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
#pragma GCC diagnostic pop
char ip_str[IP4ADDR_STRLEN_MAX];
inet_ntoa_r(*addr, ip_str, IP4ADDR_STRLEN_MAX);
mp_obj_t ip_obj = mp_obj_new_str(ip_str, strlen(ip_str));
freeaddrinfo(res);
return ip_obj;
}