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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
char *strsep(char **str, const char *sep)
{
char *s = *str, *end;
if (!s)
return NULL;
end = s + strcspn(s, sep);
if (*end)
*end++ = 0;
else
end = 0;
*str = end;
return s;
}
ssize_t getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
{
char *ptr, *eptr;
if (!*buf || !*bufsiz) {
*bufsiz = BUFSIZ;
if (!(*buf = malloc(*bufsiz)))
return -1;
}
for (ptr = *buf, eptr = *buf + *bufsiz;;) {
int c = fgetc(fp);
if (c == -1) {
if (feof(fp)) {
ssize_t diff = (ssize_t)(ptr - *buf);
if (diff != 0) {
*ptr = '\0';
return diff;
}
}
return -1;
}
*ptr++ = c;
if (c == delimiter) {
*ptr = '\0';
return ptr - *buf;
}
if (ptr + 2 >= eptr) {
char *nbuf;
size_t nbufsiz = *bufsiz * 2;
ssize_t d = ptr - *buf;
if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
return -1;
*buf = nbuf;
*bufsiz = nbufsiz;
eptr = nbuf + nbufsiz;
ptr = nbuf + d;
}
}
}
ssize_t getline(char **buf, size_t *bufsiz, FILE *fp)
{
return getdelim(buf, bufsiz, '\n', fp);
}
int inet_pton(int af, const char *src, void *dst)
{
struct sockaddr_storage ss = { 0 };
int size = sizeof(ss);
char s[INET6_ADDRSTRLEN + 1];
strncpy(s, src, INET6_ADDRSTRLEN + 1);
s[INET6_ADDRSTRLEN] = '\0';
if (WSAStringToAddress(s, af, NULL, (struct sockaddr *)&ss, &size))
return 0;
if (af == AF_INET)
*(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
else if (af == AF_INET6)
*(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
else
return 0;
return 1;
}
const char *inet_ntop(int af, const void *src, char *dst, socklen_t size)
{
struct sockaddr_storage ss = { .ss_family = af };
unsigned long s = size;
if (af == AF_INET)
((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src;
else if (af == AF_INET6)
((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src;
else
return NULL;
return WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) ? NULL : dst;
}
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