pineapple/externals/libressl/crypto/bio/b_sock.c
2020-12-28 15:15:37 +00:00

243 lines
5.3 KiB
C
Executable file

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