106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <windows.h>
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char *strsep(char **str, const char *sep)
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{
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char *s = *str, *end;
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if (!s)
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return NULL;
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end = s + strcspn(s, sep);
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if (*end)
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*end++ = 0;
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else
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end = 0;
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*str = end;
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return s;
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}
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ssize_t getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
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{
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char *ptr, *eptr;
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if (!*buf || !*bufsiz) {
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*bufsiz = BUFSIZ;
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if (!(*buf = malloc(*bufsiz)))
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return -1;
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}
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for (ptr = *buf, eptr = *buf + *bufsiz;;) {
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int c = fgetc(fp);
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if (c == -1) {
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if (feof(fp)) {
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ssize_t diff = (ssize_t)(ptr - *buf);
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if (diff != 0) {
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*ptr = '\0';
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return diff;
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}
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}
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return -1;
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}
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*ptr++ = c;
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if (c == delimiter) {
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*ptr = '\0';
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return ptr - *buf;
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}
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if (ptr + 2 >= eptr) {
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char *nbuf;
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size_t nbufsiz = *bufsiz * 2;
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ssize_t d = ptr - *buf;
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if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
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return -1;
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*buf = nbuf;
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*bufsiz = nbufsiz;
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eptr = nbuf + nbufsiz;
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ptr = nbuf + d;
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}
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}
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}
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ssize_t getline(char **buf, size_t *bufsiz, FILE *fp)
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{
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return getdelim(buf, bufsiz, '\n', fp);
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}
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int inet_pton(int af, const char *src, void *dst)
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{
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struct sockaddr_storage ss = { 0 };
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int size = sizeof(ss);
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char s[INET6_ADDRSTRLEN + 1];
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strncpy(s, src, INET6_ADDRSTRLEN + 1);
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s[INET6_ADDRSTRLEN] = '\0';
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if (WSAStringToAddress(s, af, NULL, (struct sockaddr *)&ss, &size))
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return 0;
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if (af == AF_INET)
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*(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
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else if (af == AF_INET6)
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*(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
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else
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return 0;
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return 1;
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}
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const char *inet_ntop(int af, const void *src, char *dst, socklen_t size)
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{
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struct sockaddr_storage ss = { .ss_family = af };
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unsigned long s = size;
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if (af == AF_INET)
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((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src;
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else if (af == AF_INET6)
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((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src;
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else
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return NULL;
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return WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) ? NULL : dst;
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}
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