49b29332f2
Change the name and return type of `IPv6Address::to_deprecated_string()` to `IPv6Address::to_string()` with return type `ErrorOr<String>`. It will now propagate errors that occur when writing to the StringBuilder. There are two users of `to_deprecated_string()` that now use `to_string()`: 1. `Formatted<IPv6Address>`: it now propagates errors. 2. `inet_ntop`: it now sets errno to ENOMEM and returns.
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/IPv6Address.h>
|
|
#include <arpa/inet.h>
|
|
#include <errno.h>
|
|
#include <netinet/in.h>
|
|
#include <stdio.h>
|
|
|
|
extern "C" {
|
|
|
|
char const* inet_ntop(int af, void const* src, char* dst, socklen_t len)
|
|
{
|
|
if (af == AF_INET) {
|
|
if (len < INET_ADDRSTRLEN) {
|
|
errno = ENOSPC;
|
|
return nullptr;
|
|
}
|
|
auto* bytes = (unsigned char const*)src;
|
|
snprintf(dst, len, "%u.%u.%u.%u", bytes[0], bytes[1], bytes[2], bytes[3]);
|
|
return (char const*)dst;
|
|
} else if (af == AF_INET6) {
|
|
if (len < INET6_ADDRSTRLEN) {
|
|
errno = ENOSPC;
|
|
return nullptr;
|
|
}
|
|
auto str_or_error = IPv6Address(((in6_addr const*)src)->s6_addr).to_string();
|
|
if (str_or_error.is_error()) {
|
|
errno = ENOMEM;
|
|
return nullptr;
|
|
}
|
|
auto str = str_or_error.release_value();
|
|
if (!str.bytes_as_string_view().copy_characters_to_buffer(dst, len)) {
|
|
errno = ENOSPC;
|
|
return nullptr;
|
|
}
|
|
return (char const*)dst;
|
|
}
|
|
|
|
errno = EAFNOSUPPORT;
|
|
return nullptr;
|
|
}
|
|
|
|
int inet_pton(int af, char const* src, void* dst)
|
|
{
|
|
if (af == AF_INET) {
|
|
unsigned a, b, c, d;
|
|
int count = sscanf(src, "%u.%u.%u.%u", &a, &b, &c, &d);
|
|
if (count != 4) {
|
|
errno = EINVAL;
|
|
return 0;
|
|
}
|
|
union {
|
|
struct {
|
|
uint8_t a;
|
|
uint8_t b;
|
|
uint8_t c;
|
|
uint8_t d;
|
|
};
|
|
uint32_t l;
|
|
} u;
|
|
u.a = a;
|
|
u.b = b;
|
|
u.c = c;
|
|
u.d = d;
|
|
*(uint32_t*)dst = u.l;
|
|
return 1;
|
|
} else if (af == AF_INET6) {
|
|
auto addr = IPv6Address::from_string({ src, strlen(src) });
|
|
if (!addr.has_value()) {
|
|
errno = EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
memcpy(dst, addr->to_in6_addr_t(), sizeof(in6_addr));
|
|
return 1;
|
|
}
|
|
|
|
errno = EAFNOSUPPORT;
|
|
return -1;
|
|
}
|
|
|
|
in_addr_t inet_addr(char const* str)
|
|
{
|
|
in_addr_t tmp {};
|
|
int rc = inet_pton(AF_INET, str, &tmp);
|
|
if (rc <= 0)
|
|
return INADDR_NONE;
|
|
return tmp;
|
|
}
|
|
|
|
char* inet_ntoa(struct in_addr in)
|
|
{
|
|
static char buffer[32];
|
|
inet_ntop(AF_INET, &in.s_addr, buffer, sizeof(buffer));
|
|
return buffer;
|
|
}
|
|
}
|