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https://github.com/Motorhead1991/qemu.git
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io: add QIOChannelSocket class
Implement a QIOChannel subclass that supports sockets I/O. The implementation is able to manage a single socket file descriptor, whether a TCP/UNIX listener, TCP/UNIX connection, or a UDP datagram. It provides APIs which can listen and connect either asynchronously or synchronously. Since there is no asynchronous DNS lookup API available, it uses the QIOTask helper for spawning a background thread to ensure non-blocking operation. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange
parent
b02db2d920
commit
559607ea17
13 changed files with 1736 additions and 1 deletions
399
tests/test-io-channel-socket.c
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399
tests/test-io-channel-socket.c
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/*
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* QEMU I/O channel sockets test
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*
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* Copyright (c) 2015 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "io/channel-socket.h"
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#include "io-channel-helpers.h"
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#ifdef HAVE_IFADDRS_H
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#include <ifaddrs.h>
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#endif
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static int check_protocol_support(bool *has_ipv4, bool *has_ipv6)
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{
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#ifdef HAVE_IFADDRS_H
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struct ifaddrs *ifaddr = NULL, *ifa;
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struct addrinfo hints = { 0 };
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struct addrinfo *ai = NULL;
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int gaierr;
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*has_ipv4 = *has_ipv6 = false;
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if (getifaddrs(&ifaddr) < 0) {
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g_printerr("Failed to lookup interface addresses: %s\n",
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strerror(errno));
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return -1;
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}
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for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
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if (!ifa->ifa_addr) {
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continue;
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}
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if (ifa->ifa_addr->sa_family == AF_INET) {
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*has_ipv4 = true;
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}
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if (ifa->ifa_addr->sa_family == AF_INET6) {
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*has_ipv6 = true;
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}
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}
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freeifaddrs(ifaddr);
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hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
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hints.ai_family = AF_INET6;
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hints.ai_socktype = SOCK_STREAM;
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gaierr = getaddrinfo("::1", NULL, &hints, &ai);
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if (gaierr != 0) {
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if (gaierr == EAI_ADDRFAMILY ||
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gaierr == EAI_FAMILY ||
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gaierr == EAI_NONAME) {
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*has_ipv6 = false;
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} else {
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g_printerr("Failed to resolve ::1 address: %s\n",
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gai_strerror(gaierr));
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return -1;
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}
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}
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freeaddrinfo(ai);
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return 0;
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#else
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*has_ipv4 = *has_ipv6 = false;
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return -1;
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#endif
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}
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static void test_io_channel_set_socket_bufs(QIOChannel *src,
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QIOChannel *dst)
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{
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int buflen = 64 * 1024;
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/*
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* Make the socket buffers small so that we see
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* the effects of partial reads/writes
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*/
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setsockopt(((QIOChannelSocket *)src)->fd,
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SOL_SOCKET, SO_SNDBUF,
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(char *)&buflen,
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sizeof(buflen));
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setsockopt(((QIOChannelSocket *)dst)->fd,
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SOL_SOCKET, SO_SNDBUF,
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(char *)&buflen,
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sizeof(buflen));
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}
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static void test_io_channel_setup_sync(SocketAddress *listen_addr,
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SocketAddress *connect_addr,
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QIOChannel **src,
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QIOChannel **dst)
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{
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QIOChannelSocket *lioc;
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lioc = qio_channel_socket_new();
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qio_channel_socket_listen_sync(lioc, listen_addr, &error_abort);
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if (listen_addr->type == SOCKET_ADDRESS_KIND_INET) {
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SocketAddress *laddr = qio_channel_socket_get_local_address(
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lioc, &error_abort);
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g_free(connect_addr->u.inet->port);
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connect_addr->u.inet->port = g_strdup(laddr->u.inet->port);
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qapi_free_SocketAddress(laddr);
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}
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*src = QIO_CHANNEL(qio_channel_socket_new());
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qio_channel_socket_connect_sync(
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QIO_CHANNEL_SOCKET(*src), connect_addr, &error_abort);
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qio_channel_set_delay(*src, false);
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*dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
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g_assert(*dst);
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test_io_channel_set_socket_bufs(*src, *dst);
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object_unref(OBJECT(lioc));
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}
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struct TestIOChannelData {
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bool err;
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GMainLoop *loop;
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};
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static void test_io_channel_complete(Object *src,
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Error *err,
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gpointer opaque)
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{
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struct TestIOChannelData *data = opaque;
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data->err = err != NULL;
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g_main_loop_quit(data->loop);
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}
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static void test_io_channel_setup_async(SocketAddress *listen_addr,
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SocketAddress *connect_addr,
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QIOChannel **src,
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QIOChannel **dst)
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{
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QIOChannelSocket *lioc;
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struct TestIOChannelData data;
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data.loop = g_main_loop_new(g_main_context_default(),
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TRUE);
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lioc = qio_channel_socket_new();
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qio_channel_socket_listen_async(
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lioc, listen_addr,
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test_io_channel_complete, &data, NULL);
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g_main_loop_run(data.loop);
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g_main_context_iteration(g_main_context_default(), FALSE);
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g_assert(!data.err);
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if (listen_addr->type == SOCKET_ADDRESS_KIND_INET) {
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SocketAddress *laddr = qio_channel_socket_get_local_address(
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lioc, &error_abort);
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g_free(connect_addr->u.inet->port);
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connect_addr->u.inet->port = g_strdup(laddr->u.inet->port);
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qapi_free_SocketAddress(laddr);
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}
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*src = QIO_CHANNEL(qio_channel_socket_new());
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qio_channel_socket_connect_async(
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QIO_CHANNEL_SOCKET(*src), connect_addr,
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test_io_channel_complete, &data, NULL);
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g_main_loop_run(data.loop);
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g_main_context_iteration(g_main_context_default(), FALSE);
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g_assert(!data.err);
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*dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
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g_assert(*dst);
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qio_channel_set_delay(*src, false);
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test_io_channel_set_socket_bufs(*src, *dst);
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object_unref(OBJECT(lioc));
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g_main_loop_unref(data.loop);
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}
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static void test_io_channel(bool async,
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SocketAddress *listen_addr,
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SocketAddress *connect_addr)
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{
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QIOChannel *src, *dst;
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QIOChannelTest *test;
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if (async) {
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test_io_channel_setup_async(listen_addr, connect_addr, &src, &dst);
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test = qio_channel_test_new();
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qio_channel_test_run_threads(test, true, src, dst);
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qio_channel_test_validate(test);
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object_unref(OBJECT(src));
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object_unref(OBJECT(dst));
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test_io_channel_setup_async(listen_addr, connect_addr, &src, &dst);
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test = qio_channel_test_new();
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qio_channel_test_run_threads(test, false, src, dst);
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qio_channel_test_validate(test);
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object_unref(OBJECT(src));
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object_unref(OBJECT(dst));
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} else {
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test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst);
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test = qio_channel_test_new();
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qio_channel_test_run_threads(test, true, src, dst);
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qio_channel_test_validate(test);
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object_unref(OBJECT(src));
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object_unref(OBJECT(dst));
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test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst);
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test = qio_channel_test_new();
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qio_channel_test_run_threads(test, false, src, dst);
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qio_channel_test_validate(test);
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object_unref(OBJECT(src));
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object_unref(OBJECT(dst));
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}
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}
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static void test_io_channel_ipv4(bool async)
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{
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SocketAddress *listen_addr = g_new0(SocketAddress, 1);
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SocketAddress *connect_addr = g_new0(SocketAddress, 1);
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listen_addr->type = SOCKET_ADDRESS_KIND_INET;
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listen_addr->u.inet = g_new0(InetSocketAddress, 1);
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listen_addr->u.inet->host = g_strdup("0.0.0.0");
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listen_addr->u.inet->port = NULL; /* Auto-select */
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connect_addr->type = SOCKET_ADDRESS_KIND_INET;
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connect_addr->u.inet = g_new0(InetSocketAddress, 1);
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connect_addr->u.inet->host = g_strdup("127.0.0.1");
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connect_addr->u.inet->port = NULL; /* Filled in later */
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test_io_channel(async, listen_addr, connect_addr);
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qapi_free_SocketAddress(listen_addr);
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qapi_free_SocketAddress(connect_addr);
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}
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static void test_io_channel_ipv4_sync(void)
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{
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return test_io_channel_ipv4(false);
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}
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static void test_io_channel_ipv4_async(void)
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{
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return test_io_channel_ipv4(true);
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}
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static void test_io_channel_ipv6(bool async)
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{
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SocketAddress *listen_addr = g_new0(SocketAddress, 1);
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SocketAddress *connect_addr = g_new0(SocketAddress, 1);
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listen_addr->type = SOCKET_ADDRESS_KIND_INET;
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listen_addr->u.inet = g_new0(InetSocketAddress, 1);
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listen_addr->u.inet->host = g_strdup("::");
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listen_addr->u.inet->port = NULL; /* Auto-select */
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connect_addr->type = SOCKET_ADDRESS_KIND_INET;
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connect_addr->u.inet = g_new0(InetSocketAddress, 1);
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connect_addr->u.inet->host = g_strdup("::1");
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connect_addr->u.inet->port = NULL; /* Filled in later */
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test_io_channel(async, listen_addr, connect_addr);
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qapi_free_SocketAddress(listen_addr);
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qapi_free_SocketAddress(connect_addr);
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}
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static void test_io_channel_ipv6_sync(void)
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{
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return test_io_channel_ipv6(false);
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}
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static void test_io_channel_ipv6_async(void)
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{
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return test_io_channel_ipv6(true);
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}
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#ifndef _WIN32
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static void test_io_channel_unix(bool async)
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{
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SocketAddress *listen_addr = g_new0(SocketAddress, 1);
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SocketAddress *connect_addr = g_new0(SocketAddress, 1);
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#define TEST_SOCKET "test-io-channel-socket.sock"
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listen_addr->type = SOCKET_ADDRESS_KIND_UNIX;
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listen_addr->u.q_unix = g_new0(UnixSocketAddress, 1);
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listen_addr->u.q_unix->path = g_strdup(TEST_SOCKET);
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connect_addr->type = SOCKET_ADDRESS_KIND_UNIX;
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connect_addr->u.q_unix = g_new0(UnixSocketAddress, 1);
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connect_addr->u.q_unix->path = g_strdup(TEST_SOCKET);
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test_io_channel(async, listen_addr, connect_addr);
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qapi_free_SocketAddress(listen_addr);
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qapi_free_SocketAddress(connect_addr);
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unlink(TEST_SOCKET);
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}
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static void test_io_channel_unix_sync(void)
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{
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return test_io_channel_unix(false);
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}
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static void test_io_channel_unix_async(void)
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{
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return test_io_channel_unix(true);
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}
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#endif /* _WIN32 */
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int main(int argc, char **argv)
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{
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bool has_ipv4, has_ipv6;
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module_call_init(MODULE_INIT_QOM);
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g_test_init(&argc, &argv, NULL);
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/* We're creating actual IPv4/6 sockets, so we should
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* check if the host running tests actually supports
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* each protocol to avoid breaking tests on machines
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* with either IPv4 or IPv6 disabled.
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*/
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if (check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
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return 1;
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}
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if (has_ipv4) {
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g_test_add_func("/io/channel/socket/ipv4-sync",
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test_io_channel_ipv4_sync);
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g_test_add_func("/io/channel/socket/ipv4-async",
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test_io_channel_ipv4_async);
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}
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if (has_ipv6) {
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g_test_add_func("/io/channel/socket/ipv6-sync",
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test_io_channel_ipv6_sync);
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g_test_add_func("/io/channel/socket/ipv6-async",
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test_io_channel_ipv6_async);
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}
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#ifndef _WIN32
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g_test_add_func("/io/channel/socket/unix-sync",
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test_io_channel_unix_sync);
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g_test_add_func("/io/channel/socket/unix-async",
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test_io_channel_unix_async);
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#endif /* _WIN32 */
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return g_test_run();
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}
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