mirror of
https://github.com/pineappleEA/pineapple-src.git
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244 lines
5.3 KiB
C
244 lines
5.3 KiB
C
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/* $OpenBSD: b_sock.c,v 1.69 2018/02/07 00:52:05 bluhm Exp $ */
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/*
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* Copyright (c) 2017 Bob Beck <beck@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <limits.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <openssl/bio.h>
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#include <openssl/buffer.h>
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#include <openssl/err.h>
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int
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BIO_get_host_ip(const char *str, unsigned char *ip)
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{
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struct addrinfo *res = NULL;
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struct addrinfo hints = {
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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.ai_flags = AI_PASSIVE,
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};
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uint32_t *iap = (in_addr_t *)ip;
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int error;
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if (str == NULL) {
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ERR_asprintf_error_data("NULL host provided");
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return (0);
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}
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if ((error = getaddrinfo(str, NULL, &hints, &res)) != 0) {
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BIOerror(BIO_R_BAD_HOSTNAME_LOOKUP);
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ERR_asprintf_error_data("getaddrinfo: host='%s' : %s'", str,
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gai_strerror(error));
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return (0);
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}
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*iap = (uint32_t)(((struct sockaddr_in *)(res->ai_addr))->sin_addr.s_addr);
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freeaddrinfo(res);
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return (1);
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}
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int
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BIO_get_port(const char *str, unsigned short *port_ptr)
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{
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struct addrinfo *res = NULL;
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struct addrinfo hints = {
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.ai_family = AF_UNSPEC,
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.ai_socktype = SOCK_STREAM,
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.ai_flags = AI_PASSIVE,
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};
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int error;
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if (str == NULL) {
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BIOerror(BIO_R_NO_PORT_SPECIFIED);
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return (0);
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}
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if ((error = getaddrinfo(NULL, str, &hints, &res)) != 0) {
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ERR_asprintf_error_data("getaddrinfo: service='%s' : %s'", str,
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gai_strerror(error));
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return (0);
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}
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*port_ptr = ntohs(((struct sockaddr_in *)(res->ai_addr))->sin_port);
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freeaddrinfo(res);
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return (1);
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}
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int
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BIO_sock_error(int sock)
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{
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socklen_t len;
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int err;
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len = sizeof(err);
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if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &err, &len) != 0)
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return (1);
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return (err);
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}
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struct hostent *
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BIO_gethostbyname(const char *name)
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{
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return gethostbyname(name);
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}
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int
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BIO_socket_ioctl(int fd, long type, void *arg)
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{
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int ret;
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ret = ioctl(fd, type, arg);
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if (ret < 0)
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SYSerror(errno);
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return (ret);
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}
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int
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BIO_get_accept_socket(char *host, int bind_mode)
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{
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struct addrinfo hints = {
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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.ai_flags = AI_PASSIVE,
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};
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struct addrinfo *res = NULL;
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char *h, *p, *str = NULL;
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int error, ret = 0, s = -1;
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if (host == NULL || (str = strdup(host)) == NULL)
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return (-1);
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p = NULL;
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h = str;
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if ((p = strrchr(str, ':')) == NULL) {
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/* A string without a colon is treated as a port. */
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p = str;
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h = NULL;
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} else {
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*p++ = '\0';
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if (*p == '\0') {
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BIOerror(BIO_R_NO_PORT_SPECIFIED);
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goto err;
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}
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if (*h == '\0' || strcmp(h, "*") == 0)
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h = NULL;
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}
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if ((error = getaddrinfo(h, p, &hints, &res)) != 0) {
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ERR_asprintf_error_data("getaddrinfo: '%s:%s': %s'", h, p,
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gai_strerror(error));
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goto err;
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}
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if (h == NULL) {
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struct sockaddr_in *sin = (struct sockaddr_in *)res->ai_addr;
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sin->sin_addr.s_addr = INADDR_ANY;
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}
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s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (s == -1) {
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SYSerror(errno);
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ERR_asprintf_error_data("host='%s'", host);
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BIOerror(BIO_R_UNABLE_TO_CREATE_SOCKET);
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goto err;
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}
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if (bind_mode == BIO_BIND_REUSEADDR) {
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int i = 1;
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ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
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bind_mode = BIO_BIND_NORMAL;
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}
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if (bind(s, res->ai_addr, res->ai_addrlen) == -1) {
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SYSerror(errno);
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ERR_asprintf_error_data("host='%s'", host);
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BIOerror(BIO_R_UNABLE_TO_BIND_SOCKET);
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goto err;
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}
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if (listen(s, SOMAXCONN) == -1) {
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SYSerror(errno);
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ERR_asprintf_error_data("host='%s'", host);
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BIOerror(BIO_R_UNABLE_TO_LISTEN_SOCKET);
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goto err;
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}
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ret = 1;
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err:
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free(str);
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if (res != NULL)
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freeaddrinfo(res);
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if ((ret == 0) && (s != -1)) {
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close(s);
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s = -1;
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}
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return (s);
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}
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int
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BIO_accept(int sock, char **addr)
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{
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char h[NI_MAXHOST], s[NI_MAXSERV];
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struct sockaddr_in sin;
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socklen_t sin_len = sizeof(sin);
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int ret = -1;
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if (addr == NULL)
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goto end;
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ret = accept(sock, (struct sockaddr *)&sin, &sin_len);
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if (ret == -1) {
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if (BIO_sock_should_retry(ret))
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return -2;
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SYSerror(errno);
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BIOerror(BIO_R_ACCEPT_ERROR);
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goto end;
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}
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/* XXX Crazy API. Can't be helped */
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if (*addr != NULL) {
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free(*addr);
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*addr = NULL;
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}
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if (sin.sin_family != AF_INET)
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goto end;
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if (getnameinfo((struct sockaddr *)&sin, sin_len, h, sizeof(h),
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s, sizeof(s), NI_NUMERICHOST|NI_NUMERICSERV) != 0)
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goto end;
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if ((asprintf(addr, "%s:%s", h, s)) == -1) {
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BIOerror(ERR_R_MALLOC_FAILURE);
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*addr = NULL;
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goto end;
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}
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end:
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return (ret);
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}
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int
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BIO_set_tcp_ndelay(int s, int on)
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{
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return (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) == 0);
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}
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