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linux/tools/testing/selftests/net/tls.c
Vakul Garg 0ed3015c99 selftests/tls: Fix recv(MSG_PEEK) & splice() test cases 
TLS test cases splice_from_pipe, send_and_splice &
recv_peek_multiple_records expect to receive a given nummber of bytes
and then compare them against the number of bytes which were sent.
Therefore, system call recv() must not return before receiving the
requested number of bytes, otherwise the subsequent memcmp() fails.
This patch passes MSG_WAITALL flag to recv() so that it does not return
prematurely before requested number of bytes are copied to receive
buffer.

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-01 23:18:15 -07:00

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// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <arpa/inet.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/tls.h>
#include <linux/tcp.h>
#include <linux/socket.h>
#include <sys/types.h>
#include <sys/sendfile.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include "../kselftest_harness.h"
#define TLS_PAYLOAD_MAX_LEN 16384
#define SOL_TLS 282
FIXTURE(tls)
{
int fd, cfd;
bool notls;
};
FIXTURE_SETUP(tls)
{
struct tls12_crypto_info_aes_gcm_128 tls12;
struct sockaddr_in addr;
socklen_t len;
int sfd, ret;
self->notls = false;
len = sizeof(addr);
memset(&tls12, 0, sizeof(tls12));
tls12.info.version = TLS_1_2_VERSION;
tls12.info.cipher_type = TLS_CIPHER_AES_GCM_128;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = 0;
self->fd = socket(AF_INET, SOCK_STREAM, 0);
sfd = socket(AF_INET, SOCK_STREAM, 0);
ret = bind(sfd, &addr, sizeof(addr));
ASSERT_EQ(ret, 0);
ret = listen(sfd, 10);
ASSERT_EQ(ret, 0);
ret = getsockname(sfd, &addr, &len);
ASSERT_EQ(ret, 0);
ret = connect(self->fd, &addr, sizeof(addr));
ASSERT_EQ(ret, 0);
ret = setsockopt(self->fd, IPPROTO_TCP, TCP_ULP, "tls", sizeof("tls"));
if (ret != 0) {
self->notls = true;
printf("Failure setting TCP_ULP, testing without tls\n");
}
if (!self->notls) {
ret = setsockopt(self->fd, SOL_TLS, TLS_TX, &tls12,
sizeof(tls12));
ASSERT_EQ(ret, 0);
}
self->cfd = accept(sfd, &addr, &len);
ASSERT_GE(self->cfd, 0);
if (!self->notls) {
ret = setsockopt(self->cfd, IPPROTO_TCP, TCP_ULP, "tls",
sizeof("tls"));
ASSERT_EQ(ret, 0);
ret = setsockopt(self->cfd, SOL_TLS, TLS_RX, &tls12,
sizeof(tls12));
ASSERT_EQ(ret, 0);
}
close(sfd);
}
FIXTURE_TEARDOWN(tls)
{
close(self->fd);
close(self->cfd);
}
TEST_F(tls, sendfile)
{
int filefd = open("/proc/self/exe", O_RDONLY);
struct stat st;
EXPECT_GE(filefd, 0);
fstat(filefd, &st);
EXPECT_GE(sendfile(self->fd, filefd, 0, st.st_size), 0);
}
TEST_F(tls, send_then_sendfile)
{
int filefd = open("/proc/self/exe", O_RDONLY);
char const *test_str = "test_send";
int to_send = strlen(test_str) + 1;
char recv_buf[10];
struct stat st;
char *buf;
EXPECT_GE(filefd, 0);
fstat(filefd, &st);
buf = (char *)malloc(st.st_size);
EXPECT_EQ(send(self->fd, test_str, to_send, 0), to_send);
EXPECT_EQ(recv(self->cfd, recv_buf, to_send, MSG_WAITALL), to_send);
EXPECT_EQ(memcmp(test_str, recv_buf, to_send), 0);
EXPECT_GE(sendfile(self->fd, filefd, 0, st.st_size), 0);
EXPECT_EQ(recv(self->cfd, buf, st.st_size, MSG_WAITALL), st.st_size);
}
TEST_F(tls, recv_max)
{
unsigned int send_len = TLS_PAYLOAD_MAX_LEN;
char recv_mem[TLS_PAYLOAD_MAX_LEN];
char buf[TLS_PAYLOAD_MAX_LEN];
EXPECT_GE(send(self->fd, buf, send_len, 0), 0);
EXPECT_NE(recv(self->cfd, recv_mem, send_len, 0), -1);
EXPECT_EQ(memcmp(buf, recv_mem, send_len), 0);
}
TEST_F(tls, recv_small)
{
char const *test_str = "test_read";
int send_len = 10;
char buf[10];
send_len = strlen(test_str) + 1;
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1);
EXPECT_EQ(memcmp(buf, test_str, send_len), 0);
}
TEST_F(tls, msg_more)
{
char const *test_str = "test_read";
int send_len = 10;
char buf[10 * 2];
EXPECT_EQ(send(self->fd, test_str, send_len, MSG_MORE), send_len);
EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_DONTWAIT), -1);
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
EXPECT_EQ(recv(self->cfd, buf, send_len * 2, MSG_WAITALL),
send_len * 2);
EXPECT_EQ(memcmp(buf, test_str, send_len), 0);
}
TEST_F(tls, sendmsg_single)
{
struct msghdr msg;
char const *test_str = "test_sendmsg";
size_t send_len = 13;
struct iovec vec;
char buf[13];
vec.iov_base = (char *)test_str;
vec.iov_len = send_len;
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
EXPECT_EQ(sendmsg(self->fd, &msg, 0), send_len);
EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_WAITALL), send_len);
EXPECT_EQ(memcmp(buf, test_str, send_len), 0);
}
TEST_F(tls, sendmsg_large)
{
void *mem = malloc(16384);
size_t send_len = 16384;
size_t sends = 128;
struct msghdr msg;
size_t recvs = 0;
size_t sent = 0;
memset(&msg, 0, sizeof(struct msghdr));
while (sent++ < sends) {
struct iovec vec = { (void *)mem, send_len };
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
EXPECT_EQ(sendmsg(self->cfd, &msg, 0), send_len);
}
while (recvs++ < sends)
EXPECT_NE(recv(self->fd, mem, send_len, 0), -1);
free(mem);
}
TEST_F(tls, sendmsg_multiple)
{
char const *test_str = "test_sendmsg_multiple";
struct iovec vec[5];
char *test_strs[5];
struct msghdr msg;
int total_len = 0;
int len_cmp = 0;
int iov_len = 5;
char *buf;
int i;
memset(&msg, 0, sizeof(struct msghdr));
for (i = 0; i < iov_len; i++) {
test_strs[i] = (char *)malloc(strlen(test_str) + 1);
snprintf(test_strs[i], strlen(test_str) + 1, "%s", test_str);
vec[i].iov_base = (void *)test_strs[i];
vec[i].iov_len = strlen(test_strs[i]) + 1;
total_len += vec[i].iov_len;
}
msg.msg_iov = vec;
msg.msg_iovlen = iov_len;
EXPECT_EQ(sendmsg(self->cfd, &msg, 0), total_len);
buf = malloc(total_len);
EXPECT_NE(recv(self->fd, buf, total_len, 0), -1);
for (i = 0; i < iov_len; i++) {
EXPECT_EQ(memcmp(test_strs[i], buf + len_cmp,
strlen(test_strs[i])),
0);
len_cmp += strlen(buf + len_cmp) + 1;
}
for (i = 0; i < iov_len; i++)
free(test_strs[i]);
free(buf);
}
TEST_F(tls, sendmsg_multiple_stress)
{
char const *test_str = "abcdefghijklmno";
struct iovec vec[1024];
char *test_strs[1024];
int iov_len = 1024;
int total_len = 0;
char buf[1 << 14];
struct msghdr msg;
int len_cmp = 0;
int i;
memset(&msg, 0, sizeof(struct msghdr));
for (i = 0; i < iov_len; i++) {
test_strs[i] = (char *)malloc(strlen(test_str) + 1);
snprintf(test_strs[i], strlen(test_str) + 1, "%s", test_str);
vec[i].iov_base = (void *)test_strs[i];
vec[i].iov_len = strlen(test_strs[i]) + 1;
total_len += vec[i].iov_len;
}
msg.msg_iov = vec;
msg.msg_iovlen = iov_len;
EXPECT_EQ(sendmsg(self->fd, &msg, 0), total_len);
EXPECT_NE(recv(self->cfd, buf, total_len, 0), -1);
for (i = 0; i < iov_len; i++)
len_cmp += strlen(buf + len_cmp) + 1;
for (i = 0; i < iov_len; i++)
free(test_strs[i]);
}
TEST_F(tls, splice_from_pipe)
{
int send_len = TLS_PAYLOAD_MAX_LEN;
char mem_send[TLS_PAYLOAD_MAX_LEN];
char mem_recv[TLS_PAYLOAD_MAX_LEN];
int p[2];
ASSERT_GE(pipe(p), 0);
EXPECT_GE(write(p[1], mem_send, send_len), 0);
EXPECT_GE(splice(p[0], NULL, self->fd, NULL, send_len, 0), 0);
EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
TEST_F(tls, splice_from_pipe2)
{
int send_len = 16000;
char mem_send[16000];
char mem_recv[16000];
int p2[2];
int p[2];
ASSERT_GE(pipe(p), 0);
ASSERT_GE(pipe(p2), 0);
EXPECT_GE(write(p[1], mem_send, 8000), 0);
EXPECT_GE(splice(p[0], NULL, self->fd, NULL, 8000, 0), 0);
EXPECT_GE(write(p2[1], mem_send + 8000, 8000), 0);
EXPECT_GE(splice(p2[0], NULL, self->fd, NULL, 8000, 0), 0);
EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
TEST_F(tls, send_and_splice)
{
int send_len = TLS_PAYLOAD_MAX_LEN;
char mem_send[TLS_PAYLOAD_MAX_LEN];
char mem_recv[TLS_PAYLOAD_MAX_LEN];
char const *test_str = "test_read";
int send_len2 = 10;
char buf[10];
int p[2];
ASSERT_GE(pipe(p), 0);
EXPECT_EQ(send(self->fd, test_str, send_len2, 0), send_len2);
EXPECT_EQ(recv(self->cfd, buf, send_len2, MSG_WAITALL), send_len2);
EXPECT_EQ(memcmp(test_str, buf, send_len2), 0);
EXPECT_GE(write(p[1], mem_send, send_len), send_len);
EXPECT_GE(splice(p[0], NULL, self->fd, NULL, send_len, 0), send_len);
EXPECT_EQ(recv(self->cfd, mem_recv, send_len, MSG_WAITALL), send_len);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
TEST_F(tls, splice_to_pipe)
{
int send_len = TLS_PAYLOAD_MAX_LEN;
char mem_send[TLS_PAYLOAD_MAX_LEN];
char mem_recv[TLS_PAYLOAD_MAX_LEN];
int p[2];
ASSERT_GE(pipe(p), 0);
EXPECT_GE(send(self->fd, mem_send, send_len, 0), 0);
EXPECT_GE(splice(self->cfd, NULL, p[1], NULL, send_len, 0), 0);
EXPECT_GE(read(p[0], mem_recv, send_len), 0);
EXPECT_EQ(memcmp(mem_send, mem_recv, send_len), 0);
}
TEST_F(tls, recvmsg_single)
{
char const *test_str = "test_recvmsg_single";
int send_len = strlen(test_str) + 1;
char buf[20];
struct msghdr hdr;
struct iovec vec;
memset(&hdr, 0, sizeof(hdr));
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
vec.iov_base = (char *)buf;
vec.iov_len = send_len;
hdr.msg_iovlen = 1;
hdr.msg_iov = &vec;
EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
}
TEST_F(tls, recvmsg_single_max)
{
int send_len = TLS_PAYLOAD_MAX_LEN;
char send_mem[TLS_PAYLOAD_MAX_LEN];
char recv_mem[TLS_PAYLOAD_MAX_LEN];
struct iovec vec;
struct msghdr hdr;
EXPECT_EQ(send(self->fd, send_mem, send_len, 0), send_len);
vec.iov_base = (char *)recv_mem;
vec.iov_len = TLS_PAYLOAD_MAX_LEN;
hdr.msg_iovlen = 1;
hdr.msg_iov = &vec;
EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1);
EXPECT_EQ(memcmp(send_mem, recv_mem, send_len), 0);
}
TEST_F(tls, recvmsg_multiple)
{
unsigned int msg_iovlen = 1024;
unsigned int len_compared = 0;
struct iovec vec[1024];
char *iov_base[1024];
unsigned int iov_len = 16;
int send_len = 1 << 14;
char buf[1 << 14];
struct msghdr hdr;
int i;
EXPECT_EQ(send(self->fd, buf, send_len, 0), send_len);
for (i = 0; i < msg_iovlen; i++) {
iov_base[i] = (char *)malloc(iov_len);
vec[i].iov_base = iov_base[i];
vec[i].iov_len = iov_len;
}
hdr.msg_iovlen = msg_iovlen;
hdr.msg_iov = vec;
EXPECT_NE(recvmsg(self->cfd, &hdr, 0), -1);
for (i = 0; i < msg_iovlen; i++)
len_compared += iov_len;
for (i = 0; i < msg_iovlen; i++)
free(iov_base[i]);
}
TEST_F(tls, single_send_multiple_recv)
{
unsigned int total_len = TLS_PAYLOAD_MAX_LEN * 2;
unsigned int send_len = TLS_PAYLOAD_MAX_LEN;
char send_mem[TLS_PAYLOAD_MAX_LEN * 2];
char recv_mem[TLS_PAYLOAD_MAX_LEN * 2];
EXPECT_GE(send(self->fd, send_mem, total_len, 0), 0);
memset(recv_mem, 0, total_len);
EXPECT_NE(recv(self->cfd, recv_mem, send_len, 0), -1);
EXPECT_NE(recv(self->cfd, recv_mem + send_len, send_len, 0), -1);
EXPECT_EQ(memcmp(send_mem, recv_mem, total_len), 0);
}
TEST_F(tls, multiple_send_single_recv)
{
unsigned int total_len = 2 * 10;
unsigned int send_len = 10;
char recv_mem[2 * 10];
char send_mem[10];
EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0);
EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0);
memset(recv_mem, 0, total_len);
EXPECT_EQ(recv(self->cfd, recv_mem, total_len, MSG_WAITALL), total_len);
EXPECT_EQ(memcmp(send_mem, recv_mem, send_len), 0);
EXPECT_EQ(memcmp(send_mem, recv_mem + send_len, send_len), 0);
}
TEST_F(tls, recv_partial)
{
char const *test_str = "test_read_partial";
char const *test_str_first = "test_read";
char const *test_str_second = "_partial";
int send_len = strlen(test_str) + 1;
char recv_mem[18];
memset(recv_mem, 0, sizeof(recv_mem));
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
EXPECT_NE(recv(self->cfd, recv_mem, strlen(test_str_first), 0), -1);
EXPECT_EQ(memcmp(test_str_first, recv_mem, strlen(test_str_first)), 0);
memset(recv_mem, 0, sizeof(recv_mem));
EXPECT_NE(recv(self->cfd, recv_mem, strlen(test_str_second), 0), -1);
EXPECT_EQ(memcmp(test_str_second, recv_mem, strlen(test_str_second)),
0);
}
TEST_F(tls, recv_nonblock)
{
char buf[4096];
bool err;
EXPECT_EQ(recv(self->cfd, buf, sizeof(buf), MSG_DONTWAIT), -1);
err = (errno == EAGAIN || errno == EWOULDBLOCK);
EXPECT_EQ(err, true);
}
TEST_F(tls, recv_peek)
{
char const *test_str = "test_read_peek";
int send_len = strlen(test_str) + 1;
char buf[15];
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
memset(buf, 0, sizeof(buf));
EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
}
TEST_F(tls, recv_peek_multiple)
{
char const *test_str = "test_read_peek";
int send_len = strlen(test_str) + 1;
unsigned int num_peeks = 100;
char buf[15];
int i;
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
for (i = 0; i < num_peeks; i++) {
EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
memset(buf, 0, sizeof(buf));
}
EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1);
EXPECT_EQ(memcmp(test_str, buf, send_len), 0);
}
TEST_F(tls, recv_peek_multiple_records)
{
char const *test_str = "test_read_peek_mult_recs";
char const *test_str_first = "test_read_peek";
char const *test_str_second = "_mult_recs";
int len;
char buf[64];
len = strlen(test_str_first);
EXPECT_EQ(send(self->fd, test_str_first, len, 0), len);
len = strlen(test_str_second) + 1;
EXPECT_EQ(send(self->fd, test_str_second, len, 0), len);
len = strlen(test_str_first);
memset(buf, 0, len);
EXPECT_EQ(recv(self->cfd, buf, len, MSG_PEEK | MSG_WAITALL), len);
/* MSG_PEEK can only peek into the current record. */
len = strlen(test_str_first);
EXPECT_EQ(memcmp(test_str_first, buf, len), 0);
len = strlen(test_str) + 1;
memset(buf, 0, len);
EXPECT_EQ(recv(self->cfd, buf, len, MSG_WAITALL), len);
/* Non-MSG_PEEK will advance strparser (and therefore record)
* however.
*/
len = strlen(test_str) + 1;
EXPECT_EQ(memcmp(test_str, buf, len), 0);
/* MSG_MORE will hold current record open, so later MSG_PEEK
* will see everything.
*/
len = strlen(test_str_first);
EXPECT_EQ(send(self->fd, test_str_first, len, MSG_MORE), len);
len = strlen(test_str_second) + 1;
EXPECT_EQ(send(self->fd, test_str_second, len, 0), len);
len = strlen(test_str) + 1;
memset(buf, 0, len);
EXPECT_EQ(recv(self->cfd, buf, len, MSG_PEEK | MSG_WAITALL), len);
len = strlen(test_str) + 1;
EXPECT_EQ(memcmp(test_str, buf, len), 0);
}
TEST_F(tls, recv_peek_large_buf_mult_recs)
{
char const *test_str = "test_read_peek_mult_recs";
char const *test_str_first = "test_read_peek";
char const *test_str_second = "_mult_recs";
int len;
char buf[64];
len = strlen(test_str_first);
EXPECT_EQ(send(self->fd, test_str_first, len, 0), len);
len = strlen(test_str_second) + 1;
EXPECT_EQ(send(self->fd, test_str_second, len, 0), len);
len = sizeof(buf);
memset(buf, 0, len);
EXPECT_NE(recv(self->cfd, buf, len, MSG_PEEK), -1);
len = strlen(test_str) + 1;
EXPECT_EQ(memcmp(test_str, buf, len), 0);
}
TEST_F(tls, pollin)
{
char const *test_str = "test_poll";
struct pollfd fd = { 0, 0, 0 };
char buf[10];
int send_len = 10;
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
fd.fd = self->cfd;
fd.events = POLLIN;
EXPECT_EQ(poll(&fd, 1, 20), 1);
EXPECT_EQ(fd.revents & POLLIN, 1);
EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_WAITALL), send_len);
/* Test timing out */
EXPECT_EQ(poll(&fd, 1, 20), 0);
}
TEST_F(tls, poll_wait)
{
char const *test_str = "test_poll_wait";
int send_len = strlen(test_str) + 1;
struct pollfd fd = { 0, 0, 0 };
char recv_mem[15];
fd.fd = self->cfd;
fd.events = POLLIN;
EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len);
/* Set timeout to inf. secs */
EXPECT_EQ(poll(&fd, 1, -1), 1);
EXPECT_EQ(fd.revents & POLLIN, 1);
EXPECT_EQ(recv(self->cfd, recv_mem, send_len, MSG_WAITALL), send_len);
}
TEST_F(tls, blocking)
{
size_t data = 100000;
int res = fork();
EXPECT_NE(res, -1);
if (res) {
/* parent */
size_t left = data;
char buf[16384];
int status;
int pid2;
while (left) {
int res = send(self->fd, buf,
left > 16384 ? 16384 : left, 0);
EXPECT_GE(res, 0);
left -= res;
}
pid2 = wait(&status);
EXPECT_EQ(status, 0);
EXPECT_EQ(res, pid2);
} else {
/* child */
size_t left = data;
char buf[16384];
while (left) {
int res = recv(self->cfd, buf,
left > 16384 ? 16384 : left, 0);
EXPECT_GE(res, 0);
left -= res;
}
}
}
TEST_F(tls, nonblocking)
{
size_t data = 100000;
int sendbuf = 100;
int flags;
int res;
flags = fcntl(self->fd, F_GETFL, 0);
fcntl(self->fd, F_SETFL, flags | O_NONBLOCK);
fcntl(self->cfd, F_SETFL, flags | O_NONBLOCK);
/* Ensure nonblocking behavior by imposing a small send
* buffer.
*/
EXPECT_EQ(setsockopt(self->fd, SOL_SOCKET, SO_SNDBUF,
&sendbuf, sizeof(sendbuf)), 0);
res = fork();
EXPECT_NE(res, -1);
if (res) {
/* parent */
bool eagain = false;
size_t left = data;
char buf[16384];
int status;
int pid2;
while (left) {
int res = send(self->fd, buf,
left > 16384 ? 16384 : left, 0);
if (res == -1 && errno == EAGAIN) {
eagain = true;
usleep(10000);
continue;
}
EXPECT_GE(res, 0);
left -= res;
}
EXPECT_TRUE(eagain);
pid2 = wait(&status);
EXPECT_EQ(status, 0);
EXPECT_EQ(res, pid2);
} else {
/* child */
bool eagain = false;
size_t left = data;
char buf[16384];
while (left) {
int res = recv(self->cfd, buf,
left > 16384 ? 16384 : left, 0);
if (res == -1 && errno == EAGAIN) {
eagain = true;
usleep(10000);
continue;
}
EXPECT_GE(res, 0);
left -= res;
}
EXPECT_TRUE(eagain);
}
}
TEST_F(tls, control_msg)
{
if (self->notls)
return;
char cbuf[CMSG_SPACE(sizeof(char))];
char const *test_str = "test_read";
int cmsg_len = sizeof(char);
char record_type = 100;
struct cmsghdr *cmsg;
struct msghdr msg;
int send_len = 10;
struct iovec vec;
char buf[10];
vec.iov_base = (char *)test_str;
vec.iov_len = 10;
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_iov = &vec;
msg.msg_iovlen = 1;
msg.msg_control = cbuf;
msg.msg_controllen = sizeof(cbuf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_TLS;
/* test sending non-record types. */
cmsg->cmsg_type = TLS_SET_RECORD_TYPE;
cmsg->cmsg_len = CMSG_LEN(cmsg_len);
*CMSG_DATA(cmsg) = record_type;
msg.msg_controllen = cmsg->cmsg_len;
EXPECT_EQ(sendmsg(self->fd, &msg, 0), send_len);
/* Should fail because we didn't provide a control message */
EXPECT_EQ(recv(self->cfd, buf, send_len, 0), -1);
vec.iov_base = buf;
EXPECT_EQ(recvmsg(self->cfd, &msg, MSG_WAITALL), send_len);
cmsg = CMSG_FIRSTHDR(&msg);
EXPECT_NE(cmsg, NULL);
EXPECT_EQ(cmsg->cmsg_level, SOL_TLS);
EXPECT_EQ(cmsg->cmsg_type, TLS_GET_RECORD_TYPE);
record_type = *((unsigned char *)CMSG_DATA(cmsg));
EXPECT_EQ(record_type, 100);
EXPECT_EQ(memcmp(buf, test_str, send_len), 0);
}
TEST_HARNESS_MAIN
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