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/*
* Copyright 2019-2021 OARC, Inc.
* Copyright 2017-2018 Akamai Technologies
* Copyright 2006-2016 Nominum, Inc.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "net.h"
#include "log.h"
#include "opt.h"
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <poll.h>
#include <netdb.h>
#include <arpa/inet.h>
enum perf_net_mode perf_net_parsemode(const char* mode)
{
if (!strcmp(mode, "udp")) {
return sock_udp;
} else if (!strcmp(mode, "tcp")) {
return sock_tcp;
} else if (!strcmp(mode, "tls") || !strcmp(mode, "dot")) {
return sock_dot;
}
perf_log_warning("invalid socket mode");
perf_opt_usage();
exit(1);
}
int perf_net_parsefamily(const char* family)
{
if (family == NULL || strcmp(family, "any") == 0)
return AF_UNSPEC;
else if (strcmp(family, "inet") == 0)
return AF_INET;
else if (strcmp(family, "inet6") == 0)
return AF_INET6;
else {
fprintf(stderr, "invalid family %s\n", family);
perf_opt_usage();
exit(1);
}
}
void perf_sockaddr_fromin(perf_sockaddr_t* sockaddr, const struct in_addr* in, in_port_t port)
{
memset(sockaddr, 0, sizeof(*sockaddr));
sockaddr->sa.sin.sin_family = AF_INET;
sockaddr->sa.sin.sin_addr = *in;
sockaddr->sa.sin.sin_port = htons(port);
sockaddr->length = sizeof(sockaddr->sa.sin);
}
void perf_sockaddr_fromin6(perf_sockaddr_t* sockaddr, const struct in6_addr* in, in_port_t port)
{
memset(sockaddr, 0, sizeof(*sockaddr));
sockaddr->sa.sin6.sin6_family = AF_INET6;
sockaddr->sa.sin6.sin6_addr = *in;
sockaddr->sa.sin6.sin6_port = htons(port);
sockaddr->length = sizeof(sockaddr->sa.sin6);
}
in_port_t perf_sockaddr_port(const perf_sockaddr_t* sockaddr)
{
switch (sockaddr->sa.sa.sa_family) {
case AF_INET:
return ntohs(sockaddr->sa.sin.sin_port);
case AF_INET6:
return ntohs(sockaddr->sa.sin6.sin6_port);
default:
break;
}
return 0;
}
void perf_sockaddr_setport(perf_sockaddr_t* sockaddr, in_port_t port)
{
switch (sockaddr->sa.sa.sa_family) {
case AF_INET:
sockaddr->sa.sin.sin_port = htons(port);
break;
case AF_INET6:
sockaddr->sa.sin6.sin6_port = htons(port);
break;
default:
break;
}
}
void perf_sockaddr_format(const perf_sockaddr_t* sockaddr, char* buf, size_t len)
{
const void* src;
*buf = 0;
switch (sockaddr->sa.sa.sa_family) {
case AF_INET:
src = &sockaddr->sa.sin.sin_addr;
break;
case AF_INET6:
src = &sockaddr->sa.sin6.sin6_addr;
break;
default:
return;
}
(void)inet_ntop(sockaddr->sa.sa.sa_family, src, buf, len);
}
void perf_net_parseserver(int family, const char* name, unsigned int port, perf_sockaddr_t* addr)
{
struct addrinfo* ai;
if (getaddrinfo(name, 0, 0, &ai) == 0) {
struct addrinfo* a;
for (a = ai; a; a = a->ai_next) {
if (a->ai_family == family || family == AF_UNSPEC) {
switch (a->ai_family) {
case AF_INET:
perf_sockaddr_fromin(addr, &((struct sockaddr_in*)a->ai_addr)->sin_addr, port);
break;
case AF_INET6:
perf_sockaddr_fromin6(addr, &((struct sockaddr_in6*)a->ai_addr)->sin6_addr, port);
break;
default:
continue;
}
freeaddrinfo(ai);
return;
}
}
freeaddrinfo(ai);
}
fprintf(stderr, "invalid server address %s\n", name);
perf_opt_usage();
exit(1);
}
void perf_net_parselocal(int family, const char* name, unsigned int port,
perf_sockaddr_t* addr)
{
struct in_addr in4a;
struct in6_addr in6a;
if (name == NULL) {
switch (family) {
case AF_INET:
in4a.s_addr = INADDR_ANY;
perf_sockaddr_fromin(addr, &in4a, port);
return;
case AF_INET6:
perf_sockaddr_fromin6(addr, &in6addr_any, port);
return;
default:
break;
}
} else if (inet_pton(AF_INET, name, &in4a) == 1) {
perf_sockaddr_fromin(addr, &in4a, port);
return;
} else if (inet_pton(AF_INET6, name, &in6a) == 1) {
perf_sockaddr_fromin6(addr, &in6a, port);
return;
}
fprintf(stderr, "invalid local address %s\n", name);
perf_opt_usage();
exit(1);
}
struct perf_net_socket* perf_net_opensocket(enum perf_net_mode mode, const perf_sockaddr_t* server, const perf_sockaddr_t* local, unsigned int offset, size_t bufsize)
{
int port;
perf_sockaddr_t tmp;
if (server->sa.sa.sa_family != local->sa.sa.sa_family) {
perf_log_fatal("server and local addresses have different families");
}
tmp = *local;
port = perf_sockaddr_port(&tmp);
if (port != 0 && offset != 0) {
port += offset;
if (port >= 0xFFFF)
perf_log_fatal("port %d out of range", port);
perf_sockaddr_setport(&tmp, port);
}
switch (mode) {
case sock_udp:
return perf_net_udp_opensocket(server, &tmp, bufsize);
case sock_tcp:
return perf_net_tcp_opensocket(server, &tmp, bufsize);
case sock_dot:
return perf_net_dot_opensocket(server, &tmp, bufsize);
default:
perf_log_fatal("perf_net_opensocket(): invalid mode");
}
return 0;
}
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