darling-xnu/tests/recvmsg_x_test.c
2023-05-16 21:41:14 -07:00

217 lines
7.1 KiB
C

/*
* Copyright (c) 2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* -*- compile-command: "xcrun --sdk iphoneos.internal make recvmsg_x_test" -*- */
#include <sys/errno.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdbool.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include <darwintest.h>
#include <darwintest_utils.h>
#define NMSGS 5
#define BUFFERLEN 1000
T_GLOBAL_META(T_META_NAMESPACE("xnu.net"));
static void
sendPackets(int s, struct sockaddr *dst, unsigned int numMsg, size_t bufferLen)
{
ssize_t count = 0;
struct msghdr msg = {};
struct iovec vec = {};
char *bytes = calloc(1, bufferLen);
if (bytes == NULL) {
err(EX_OSERR, "calloc()");
}
vec.iov_base = bytes;
vec.iov_len = bufferLen;
msg.msg_name = (void *)dst;
msg.msg_namelen = dst->sa_len;
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
for (unsigned int i = 0; i < numMsg; i++) {
ssize_t n;
T_QUIET; T_EXPECT_POSIX_SUCCESS(n = sendmsg(s, &msg, 0), "sendmsg()");
T_LOG("Sent %ld bytes\n", n);
count += 1;
}
// Wait a bit to make sure the packets reach the receiver
usleep(100000);
T_LOG("Sent %ld packet\n", count);
free(bytes);
}
static void
recvPackets_x(int s, unsigned int numMsg, size_t buflen, socklen_t cmsgLen)
{
struct msghdr_x *msgList;
struct sockaddr_in *srcAddrs;
struct iovec *vec;
char *buffers;
char *cmsgBuf;
T_QUIET; T_ASSERT_NOTNULL(msgList = calloc(numMsg, sizeof(struct msghdr_x)), "msgList calloc()");
T_QUIET; T_ASSERT_NOTNULL(srcAddrs = calloc(numMsg, sizeof(struct sockaddr_in)), "srcAddrs calloc()");
T_QUIET; T_ASSERT_NOTNULL(vec = calloc(numMsg, sizeof(struct iovec)), "vec calloc()");
T_QUIET; T_ASSERT_NOTNULL(buffers = calloc(numMsg, buflen), "buffers calloc()");
T_QUIET; T_ASSERT_NOTNULL(cmsgBuf = calloc(numMsg, ALIGN(cmsgLen)), "cmsgBuf calloc()");
u_int count = 0;
while (true) {
/*
* Wrap around when we've exhausted the list
*/
if ((count % numMsg) == 0) {
for (unsigned int i = 0; i < numMsg; i++) {
struct msghdr_x *msg = &msgList[i];
msg->msg_name = &srcAddrs[i];
msg->msg_namelen = sizeof(srcAddrs[i]);
vec[i].iov_base = buffers + (i * buflen);
vec[i].iov_len = buflen;
msg->msg_iov = &vec[i];
msg->msg_iovlen = 1;
msg->msg_control = cmsgBuf + (i * ALIGN(cmsgLen));
msg->msg_controllen = cmsgLen;
msg->msg_flags = 0;
T_QUIET; T_EXPECT_TRUE((uintptr_t)msg->msg_control % sizeof(uint32_t) == 0, NULL);
}
}
ssize_t n = recvmsg_x(s, msgList + (count % numMsg), numMsg - (count % numMsg), 0);
if (n < 0) {
if (errno == EINTR) {
T_LOG("recvmsg_x(): %s", strerror(errno));
continue;
}
if (errno == EWOULDBLOCK) {
T_LOG("recvmsg_x(): %s", strerror(errno));
break;
}
T_FAIL("recvmsg_x() failed: %s", strerror(errno));
}
T_LOG("recvmsg_x returned %ld packets\n", n);
for (unsigned int i = count; i < count + (u_int)n; i++) {
struct msghdr_x *msg = &msgList[i % numMsg];
T_LOG("Received packet #%d %lu bytes with recvmsg_x(), msg_namelen = %u, msg_controllen = %d -> %d, msg_flags = 0x%x\n",
i + 1, msg->msg_datalen, msg->msg_namelen, cmsgLen, msg->msg_controllen, msg->msg_flags);
struct cmsghdr *cmsg;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
T_QUIET; T_EXPECT_TRUE((uintptr_t)cmsg % sizeof(uint32_t) == 0, NULL);
T_LOG("level = %d, type = %d, length = %d\n", cmsg->cmsg_level, cmsg->cmsg_type, cmsg->cmsg_len);
}
}
count += (u_int)n;
}
free(msgList);
free(srcAddrs);
free(vec);
free(buffers);
free(cmsgBuf);
}
T_DECL(recvmsg_x_test, "exercise revcmsg_x() with various parameter")
{
struct sockaddr_in addr = {
.sin_len = sizeof(addr),
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(0x7f000001),
.sin_port = 0
};
int recvSocket;
T_QUIET; T_EXPECT_POSIX_SUCCESS(recvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP), "socket()");
T_QUIET; T_EXPECT_POSIX_SUCCESS(bind(recvSocket, (const struct sockaddr *)&addr, sizeof(addr)), "bind()");
socklen_t addrLen = sizeof(addr);
T_QUIET; T_EXPECT_POSIX_SUCCESS(getsockname(recvSocket, (struct sockaddr *)&addr, &addrLen), "getsockname()");
int one = 1;
T_QUIET; T_EXPECT_POSIX_SUCCESS(setsockopt(recvSocket, IPPROTO_IP, IP_RECVPKTINFO, (void *)&one, sizeof(one)), "setsockopt(IP_RECVPKTINFO)");
int flags = fcntl(recvSocket, F_GETFL, 0);
T_QUIET; T_EXPECT_POSIX_SUCCESS(fcntl(recvSocket, F_SETFL, flags | O_NONBLOCK), "fcntl()");
int sendSocket;
T_QUIET; T_EXPECT_POSIX_SUCCESS(sendSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP), "sendSocket socket()");
for (int dontTrunc = 0; dontTrunc <= 1; dontTrunc++) {
T_QUIET; T_EXPECT_POSIX_SUCCESS(setsockopt(recvSocket, SOL_SOCKET, SO_DONTTRUNC, (void *)&dontTrunc, sizeof(dontTrunc)), "setsockopt(SO_DONTTRUNC)");
T_LOG("\n================= recvmsg_x() test =================\n");
sendPackets(sendSocket, (struct sockaddr *)&addr, NMSGS, BUFFERLEN);
recvPackets_x(recvSocket, NMSGS, BUFFERLEN, 50);
T_LOG("\n================= recvmsg_x() test =================\n");
sendPackets(sendSocket, (struct sockaddr *)&addr, NMSGS, BUFFERLEN);
recvPackets_x(recvSocket, NMSGS, BUFFERLEN * 2, 50);
T_LOG("\n================= recvmsg_x() test =================\n");
sendPackets(sendSocket, (struct sockaddr *)&addr, NMSGS, BUFFERLEN);
recvPackets_x(recvSocket, NMSGS, BUFFERLEN / 2, 50);
T_LOG("\n================= recvmsg_x() test =================\n");
sendPackets(sendSocket, (struct sockaddr *)&addr, NMSGS, BUFFERLEN);
recvPackets_x(recvSocket, NMSGS, BUFFERLEN, 10);
T_LOG("\n================= recvmsg_x() test =================\n");
sendPackets(sendSocket, (struct sockaddr *)&addr, NMSGS, BUFFERLEN);
recvPackets_x(recvSocket, NMSGS, BUFFERLEN / 2, 10);
}
close(sendSocket);
close(recvSocket);
T_LOG("\n================= PASS =================\n");
}