/*
* Called with the server locked.
*/
void
smb_close_socket(struct smb_sb_info *server)
{
struct file * file = server->sock_file;
if (file)
{
#ifdef SMBFS_DEBUG_VERBOSE
printk("smb_close_socket: closing socket %p\n", server_sock(server));
#endif
#ifdef SMBFS_PARANOIA
if (server_sock(server)->sk->data_ready == smb_data_callback)
printk("smb_close_socket: still catching keepalives!\n");
#endif
server->sock_file = NULL;
fput(file);
}
}
/**
* test_server_loop() 関数テスト
*
* @return なし
*/
void
test_server_loop(void)
{
pid_t cpid = 0; /* 子プロセスID */
pid_t w = 0; /* wait戻り値 */
int status = 0; /* wait引数 */
int retval = 0; /* 戻り値 */
int count = 1; /* ループカウント */
if (set_port_string(port) < 0)
cut_error("set_port_string");
ssock = server_sock();
cpid = fork();
if (cpid < 0) {
cut_error("fork(%d)", errno);
return;
}
if (cpid == 0) {
dbglog("child");
count = 2;
g_sig_handled = 1;
while (count--)
server_loop(ssock);
exit(EXIT_SUCCESS);
} else {
dbglog("parent: cpid=%d", (int)cpid);
csock = inet_sock_client();
if (csock < 0)
return;
/* 送信 */
retval = send_client(csock, expr, sizeof(expr));
if (retval < 0) {
cut_error("send_client: csock=%d(%d)", csock, errno);
return;
}
/* 受信 */
retval = recv_client(csock, readbuf);
if (retval < 0) {
cut_error("recv_client: csock=%d(%d)", csock, errno);
return;
}
cut_assert_equal_string((char *)expected, (char *)readbuf);
w = wait(&status);
if (w < 0)
cut_notify("wait(%d)", errno);
dbglog("w=%d", (int)w);
}
}
int
smb_dont_catch_keepalive(struct smb_sb_info *server)
{
struct socket *socket;
struct sock *sk;
void * data_ready;
int error;
error = -EINVAL;
socket = server_sock(server);
if (!socket)
{
printk(KERN_DEBUG "smb_dont_catch_keepalive: did not get valid server!\n");
goto out;
}
sk = socket->sk;
if (sk == NULL)
{
printk(KERN_DEBUG "smb_dont_catch_keepalive: sk == NULL");
goto out;
}
/* Is this really an error?? */
if (server->data_ready == NULL)
{
printk(KERN_DEBUG "smb_dont_catch_keepalive: "
"server->data_ready == NULL\n");
goto out;
}
DEBUG1("sk->d_r = %x, server->d_r = %x\n",
(unsigned int) (sk->data_ready),
(unsigned int) (server->data_ready));
/*
* Restore the original callback atomically to avoid races ...
*/
data_ready = xchg(&sk->data_ready, server->data_ready);
server->data_ready = NULL;
if (data_ready != smb_data_ready)
{
printk(KERN_ERR "smb_dont_catch_keepalive: "
"sk->data_ready != smb_data_ready\n");
}
error = 0;
out:
return error;
}
/*
* smb_receive
* fs points to the correct segment
*/
static int
smb_receive(struct smb_sb_info *server)
{
struct socket *socket = server_sock(server);
unsigned char * packet = server->packet;
int len, result;
unsigned char peek_buf[4];
result = smb_get_length(socket, peek_buf);
if (result < 0)
goto out;
len = result;
/*
* Some servers do not respect our max_xmit and send
* larger packets. Try to allocate a new packet,
* but don't free the old one unless we succeed.
*/
if (len + 4 > server->packet_size)
{
int new_len = smb_round_length(len + 4);
result = -ENOMEM;
packet = smb_vmalloc(new_len);
if (packet == NULL)
goto out;
smb_vfree(server->packet);
server->packet = packet;
server->packet_size = new_len;
}
memcpy(packet, peek_buf, 4);
result = smb_receive_raw(socket, packet + 4, len);
if (result < 0)
{
#ifdef SMBFS_DEBUG_VERBOSE
printk("smb_receive: receive error: %d\n", result);
#endif
goto out;
}
server->rcls = *(packet + smb_rcls);
server->err = WVAL(packet, smb_err);
#ifdef SMBFS_DEBUG_VERBOSE
if (server->rcls != 0)
printk("smb_receive: rcls=%d, err=%d\n", server->rcls, server->err);
#endif
out:
return result;
}
/**
* test_server_sock() 関数テスト
*
* @return なし
*/
void
test_server_sock(void)
{
dbglog("start");
if (set_port_string(port) < 0)
cut_error("set_port_string");
ssock = server_sock();
dbglog("server_sock=%d", ssock);
cut_assert_not_equal_int(EX_NG, ssock);
csock = inet_sock_client();
if (csock < 0)
cut_error("inet_sock_client");
}
int main()
{
std::cout << "서버 초기화 시작" << std::endl;
Poco::Net::SocketAddress server_add(PORT);
Poco::Net::ServerSocket server_sock(server_add);
std::cout << "서버 초기화 완료. 클라이언트 접속 대기 중..." << std::endl;
while (true)
{
Poco::Net::StreamSocket ss = server_sock.acceptConnection();
try
{
char buffer[256] = { 0, };
int n = ss.receiveBytes(buffer, sizeof(buffer));
std::cout << "클라이언트에서 받은 메시지: " << buffer << std::endl;
while (n > 0)
{
char szSendMessage[256] = { 0, };
sprintf_s(szSendMessage, 128 - 1, "Re:%s", buffer);
int nMsgLen = strnlen_s(szSendMessage, 256 - 1);
ss.sendBytes(szSendMessage, nMsgLen);
n = ss.receiveBytes(buffer, sizeof(buffer));
std::cout << "클라이언트에서 받은 메시지: " << buffer << std::endl;
}
std::cout << "클라이언트와 연결이 끊어졌습니다" << std::endl;
}
catch (Poco::Exception& exc)
{
std::cerr << "EchoServer: " << exc.displayText() << std::endl;
}
}
getchar();
return 0;
}
int
smb_catch_keepalive(struct smb_sb_info *server)
{
struct socket *socket;
struct sock *sk;
void *data_ready;
int error;
error = -EINVAL;
socket = server_sock(server);
if (!socket)
{
printk(KERN_DEBUG "smb_catch_keepalive: did not get valid server!\n");
server->data_ready = NULL;
goto out;
}
sk = socket->sk;
if (sk == NULL)
{
DEBUG1("sk == NULL");
server->data_ready = NULL;
goto out;
}
DEBUG1("sk->d_r = %x, server->d_r = %x\n",
(unsigned int) (sk->data_ready),
(unsigned int) (server->data_ready));
/*
* Install the callback atomically to avoid races ...
*/
data_ready = xchg(&sk->data_ready, smb_data_ready);
if (data_ready != smb_data_ready)
{
server->data_ready = data_ready;
error = 0;
} else
printk(KERN_ERR "smb_catch_keepalive: already done\n");
out:
return error;
}
/**
* test_server_proc() 関数テスト
*
* @return なし
*/
void
test_server_proc(void)
{
pid_t cpid = 0; /* 子プロセスID */
pid_t w = 0; /* wait戻り値 */
int status = 0; /* wait引数 */
int retval = 0; /* 戻り値 */
thread_data *dt = NULL; /* ソケット情報構造体 */
void *servret = NULL; /* テスト関数戻り値 */
if (set_port_string(port) < 0)
cut_error("set_port_string");
ssock = server_sock();
cpid = fork();
if (cpid < 0) {
cut_error("fork(%d)", errno);
return;
}
if (cpid == 0) {
dbglog("child");
dt = (thread_data *)malloc(sizeof(thread_data));
if (!dt) {
outlog("malloc: size=%zu", sizeof(thread_data));
exit(EXIT_FAILURE);
}
(void)memset(dt, 0, sizeof(thread_data));
dt->len = (socklen_t)sizeof(dt->addr);
dt->sock = accept(ssock, (struct sockaddr *)&dt->addr, &dt->len);
if (dt->sock < 0) {
outlog("accept: ssock=%d", ssock);
memfree((void **)&dt, NULL);
exit(EXIT_FAILURE);
}
g_sig_handled = 1;
/* テスト関数実行 */
servret = server.server_proc(dt);
if (servret) {
outlog("server_proc");
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
} else {
dbglog("parent: cpid=%d", (int)cpid);
csock = inet_sock_client();
if (csock < 0)
return;
/* 送信 */
retval = send_client(csock, expr, sizeof(expr));
if (retval < 0) {
cut_error("send_client: csock=%d(%d)", csock, errno);
return;
}
/* 受信 */
retval = recv_client(csock, readbuf);
if (retval < 0) {
cut_error("recv_client: csock=%d(%d)", csock, errno);
return;
}
cut_assert_equal_string((char *)expected, (char *)readbuf);
w = wait(&status);
if (w < 0)
cut_notify("wait(%d)", errno);
dbglog("w=%d", (int)w);
if (WEXITSTATUS(status))
cut_error("child failed");
}
}
static int
smb_send_trans2(struct smb_sb_info *server, __u16 trans2_command,
int ldata, unsigned char *data,
int lparam, unsigned char *param)
{
struct socket *sock = server_sock(server);
struct scm_cookie scm;
int err;
/* I know the following is very ugly, but I want to build the
smb packet as efficiently as possible. */
const int smb_parameters = 15;
const int oparam =
ROUND_UP(SMB_HEADER_LEN + 2 * smb_parameters + 2 + 3);
const int odata =
ROUND_UP(oparam + lparam);
const int bcc =
odata + ldata - (SMB_HEADER_LEN + 2 * smb_parameters + 2);
const int packet_length =
SMB_HEADER_LEN + 2 * smb_parameters + bcc + 2;
unsigned char padding[4] = {0,};
char *p;
struct iovec iov[4];
struct msghdr msg;
/* N.B. This test isn't valid! packet_size may be < max_xmit */
if ((bcc + oparam) > server->opt.max_xmit)
{
return -ENOMEM;
}
p = smb_setup_header(server, SMBtrans2, smb_parameters, bcc);
WSET(server->packet, smb_tpscnt, lparam);
WSET(server->packet, smb_tdscnt, ldata);
/* N.B. these values should reflect out current packet size */
WSET(server->packet, smb_mprcnt, TRANS2_MAX_TRANSFER);
WSET(server->packet, smb_mdrcnt, TRANS2_MAX_TRANSFER);
WSET(server->packet, smb_msrcnt, 0);
WSET(server->packet, smb_flags, 0);
DSET(server->packet, smb_timeout, 0);
WSET(server->packet, smb_pscnt, lparam);
WSET(server->packet, smb_psoff, oparam - 4);
WSET(server->packet, smb_dscnt, ldata);
WSET(server->packet, smb_dsoff, odata - 4);
WSET(server->packet, smb_suwcnt, 1);
WSET(server->packet, smb_setup0, trans2_command);
*p++ = 0; /* null smb_name for trans2 */
*p++ = 'D'; /* this was added because OS/2 does it */
*p++ = ' ';
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_iov = iov;
msg.msg_iovlen = 4;
msg.msg_flags = 0;
iov[0].iov_base = (void *) server->packet;
iov[0].iov_len = oparam;
iov[1].iov_base = (param == NULL) ? padding : param;
iov[1].iov_len = lparam;
iov[2].iov_base = padding;
iov[2].iov_len = odata - oparam - lparam;
iov[3].iov_base = (data == NULL) ? padding : data;
iov[3].iov_len = ldata;
err = scm_send(sock, &msg, &scm);
if (err >= 0)
{
err = sock->ops->sendmsg(sock, &msg, packet_length, &scm);
scm_destroy(&scm);
}
return err;
}
/*
* Called with the server locked
*/
int
smb_request(struct smb_sb_info *server)
{
unsigned long flags, sigpipe;
mm_segment_t fs;
sigset_t old_set;
int len, result;
unsigned char *buffer;
result = -EBADF;
buffer = server->packet;
if (!buffer)
goto bad_no_packet;
result = -EIO;
if (server->state != CONN_VALID)
goto bad_no_conn;
if ((result = smb_dont_catch_keepalive(server)) != 0)
goto bad_conn;
len = smb_len(buffer) + 4;
DEBUG1("len = %d cmd = 0x%X\n", len, buffer[8]);
spin_lock_irqsave(¤t->sigmask_lock, flags);
sigpipe = sigismember(¤t->signal, SIGPIPE);
old_set = current->blocked;
siginitsetinv(¤t->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP));
recalc_sigpending(current);
spin_unlock_irqrestore(¤t->sigmask_lock, flags);
fs = get_fs();
set_fs(get_ds());
result = smb_send_raw(server_sock(server), (void *) buffer, len);
if (result > 0)
{
result = smb_receive(server);
}
/* read/write errors are handled by errno */
spin_lock_irqsave(¤t->sigmask_lock, flags);
if (result == -EPIPE && !sigpipe)
sigdelset(¤t->signal, SIGPIPE);
current->blocked = old_set;
recalc_sigpending(current);
spin_unlock_irqrestore(¤t->sigmask_lock, flags);
set_fs(fs);
if (result >= 0)
{
int result2 = smb_catch_keepalive(server);
if (result2 < 0)
{
printk(KERN_ERR "smb_request: catch keepalive failed\n");
result = result2;
}
}
if (result < 0)
goto bad_conn;
/*
* Check for fatal server errors ...
*/
if (server->rcls) {
int error = smb_errno(server);
if (error == EBADSLT) {
printk(KERN_ERR "smb_request: tree ID invalid\n");
result = error;
goto bad_conn;
}
}
out:
DEBUG1("result = %d\n", result);
return result;
bad_conn:
PARANOIA("result %d, setting invalid\n", result);
server->state = CONN_INVALID;
smb_invalidate_inodes(server);
goto out;
bad_no_packet:
printk(KERN_ERR "smb_request: no packet!\n");
goto out;
bad_no_conn:
printk(KERN_ERR "smb_request: connection %d not valid!\n",
server->state);
goto out;
}
/*--------------------------------------------------------------------
echo_server()
------------------------------------------------------------------*/
void echo_server () {
int ssock, csock, more, nread, nwritten, status;
unsigned char i;
pid_t pid;
char ibuf[64], obuf[64], *p;
struct sockaddr_in sin;
socklen_t slen = sizeof( sin );
int hostlen=1024;
char *host=(char *)malloc( hostlen*sizeof( char ));
/* creates server socket */
ssock = server_sock();
gethostname( host,hostlen );
printf( "host: [%s]\n",host );
/*printf( "port: %d\n", ntohs( get_port( ssock )));*/
printf( "port --> for non-linux=[%d] or for linux=[%d]\n",
ntohs( get_port( ssock )),get_port( ssock ));
/* accept returns a socket descriptor for the accepted socket */
if (( csock = accept( ssock,
(struct sockaddr *)&sin, &slen )) == -1 ) {
sysabort( "server/accept" );
}
fprintf( stdout,"server: socket created/listen/accepted\n" );
fflush( stdout );
/* loop while reading on the socket... */
more = 1;
while ( more ) {
if (( nread = read( csock, &i, sizeof(i))) < 0 ) {
sysabort( "server/read" );
}
else {
fprintf( stdout,"server: i=%d\n",i );
fflush( stdout );
if (( nread = read( csock, ibuf, i )) < 0 ) {
sysabort( "server/read" );
}
ibuf[nread] = '\0';
if ( ibuf[0] == TERM ) {
more = 0;
}
else {
fprintf( stdout,"server: read message [%s]\n",ibuf );
fflush( stdout );
/* now do output... */
strcpy( obuf,"okay" );
p = obuf;
i = strlen( obuf );
fprintf( stdout,"server: writing message [%s]\n",p );
fflush( stdout );
if (( nwritten = write( csock, &i, sizeof(i) )) == -1 ) {
sysabort( "server/write" );
}
if (( nwritten = write( csock, p, strlen(p) )) == -1 ) {
sysabort( "server/write" );
}
}
}
} /* end while more */
/* close socket connection */
close( csock );
} /* end of echo_server() */
void test_ssl() {
interface ifs[16];
active_interfaces(ifs, 16);
char *passwd = "password";
char *dir = chdir_temp_dir();
kdfp kdfp = { .N = 2, .r = 1, .p = 1};
uint8_t kek[KEY_LEN] = { 0 };
struct server_cfg cfg = {
.passwd = passwd,
.cert = "server.pem",
.ifa = &ifs[0],
};
pthread_t tid;
EC_GROUP *group = EC_GROUP_new_by_curve_name(OBJ_txt2nid(EC_CURVE_NAME));
EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
init_certs(group, passwd, "server.pem", "client.pem");
init_certs(group, passwd, "zerver.pem", "zlient.pem");
init_index("index", kek, &kdfp);
EC_GROUP_free(group);
assert(pthread_create(&tid, NULL, &run_server, &cfg) == 0);
struct timeval timeout = { .tv_usec = 500 };
uint32_t usecs = 10000;
sockaddr6 addr;
X509 *cert = NULL, *sert = NULL;
EVP_PKEY *pk = NULL, *sk = NULL;
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
uint8_t data[KDFP_LEN];
// client/server cert & pk mismatch
read_pem("client.pem", NULL, passwd, &pk, 2, &sert, &cert);
read_pem("server.pem", NULL, passwd, &sk, 0);
assert(client_ctx(sert, cert, sk) == NULL);
assert(server_sock(&ctx, sert, pk, cfg.ifa, &addr) == -1);
assert(ctx == NULL);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
// incorrect signature on pong
read_pem("zerver.pem", NULL, passwd, &sk, 1, &sert);
assert(find_server(sk, &addr, usecs, 30) == false);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
// incorrect server certificate
read_pem("server.pem", NULL, passwd, &sk, 1, &sert);
assert(find_server(sk, &addr, usecs, 30) == true);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
read_pem("client.pem", NULL, passwd, &pk, 2, &sert, &cert);
X509_free(sert);
read_pem("zerver.pem", NULL, passwd, &sk, 1, &sert);
ctx = client_ctx(sert, cert, pk);
assert(client_socket(ctx, &addr, &timeout) == NULL);
assert(ERR_GET_REASON(ERR_get_error()) == SSL_R_CERTIFICATE_VERIFY_FAILED);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
// incorrect client certificate
read_pem("zlient.pem", NULL, passwd, &pk, 1, &cert);
read_pem("server.pem", NULL, passwd, &sk, 1, &sert);
ctx = client_ctx(sert, cert, pk);
assert(client_socket(ctx, &addr, &timeout) == NULL);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
// valid certificates
read_pem("client.pem", NULL, passwd, &pk, 2, &sert, &cert);
read_pem("server.pem", NULL, passwd, &sk, 0);
ctx = client_ctx(sert, cert, pk);
assert((ssl = client_socket(ctx, &addr, &timeout)));
assert(SSL_read(ssl, &data, KDFP_LEN) == KDFP_LEN);
cleanup(&ctx, &ssl, &sert, &cert, &sk, &pk);
pthread_kill(tid, SIGINT);
pthread_join(tid, NULL);
unlink("server.pem");
unlink("client.pem");
unlink("zerver.pem");
unlink("zlient.pem");
unlink("index");
rmdir_temp_dir(dir);
}