int SSH2Utils::exec(const char *cmd) {
m_execResultStr.clear();
int rc = -1;
LIBSSH2_CHANNEL *channel;
/* Exec non-blocking on the remove host */
while ((channel = libssh2_channel_open_session(m_session)) == NULL
&& libssh2_session_last_error(m_session, NULL, NULL, 0)
== LIBSSH2_ERROR_EAGAIN) {
waitsocket();
}
if (channel == NULL) {
fprintf(stderr, "Channel Error\n");
m_errCode = 9;
return -1;
}
/* Request a terminal with 'vanilla' terminal emulation
* See /etc/termcap for more options
*/
if (libssh2_channel_request_pty(channel, "vanilla")) {
fprintf(stderr, "Failed requesting pty\n");
}
/* Open a SHELL on that pty */
if (libssh2_channel_shell(channel)) {
fprintf(stderr, "Unable to request shell on allocated pty\n");
}
libssh2_channel_write(channel, cmd, strlen(cmd));
libssh2_channel_send_eof(channel);
char buffer[BUF_SIZE];
memset(buffer, 0, BUF_SIZE);
rc = libssh2_channel_read(channel, buffer, BUF_SIZE);
if (rc > 0) {
m_execResultStr.append(buffer);
}
m_channelExitCode = 127;
while ((rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN)
waitsocket();
if (rc == 0) {
m_channelExitCode = libssh2_channel_get_exit_status(channel);
}
skip_shell:
if (channel) {
libssh2_channel_free(channel);
channel = NULL;
}
return rc;
}
/**
* @function ssh.writeFile
*
* ### Synopsis
*
* var status = ssh.writeFile(handle, srcPath, dstPath);
* var status = ssh.writeFile(handle, srcPath, dstPath, mode);
*
* Write file to remote server via SCP.
*
* @param {object} handle - opaque handle to already open SSH2 connection.
* @param {string} srcPath - path to file in local file system to send.
* @param {string} dstPath - path to file in remote file system to create.
* @param {int} mode - desired resulting file permissions of file on remote end.
* @return {boolean} success - true if the transfer succeeded, string error message if transfer failed.
*
* ### Note
* If mode is not provided, the file mode of the file being sent will be used.
*/
static JSVAL ssh2_scp_send(JSARGS args) {
HandleScope scope;
SSH2 *ssh2 = HANDLE(args[0]);
String::Utf8Value srcPath(args[1]);
String::Utf8Value dstPath(args[2]);
int mode;
struct stat fileinfo;
if (stat(*srcPath, &fileinfo) != 0) {
return scope.Close(String::New(strerror(errno)));
}
if (args.Length() > 3) {
mode = args[3]->IntegerValue();
}
else {
mode = fileinfo.st_mode;
}
mode &= 0777;
int fd = open(*srcPath, O_RDONLY);
if (fd < 0) {
return scope.Close(String::New(strerror(errno)));
}
#ifdef libssh2_scp_send64
LIBSSH2_CHANNEL *channel = libssh2_scp_send64(ssh2->mSession, *dstPath, mode, fileinfo.st_size, 0, 0);
#else
LIBSSH2_CHANNEL *channel = libssh2_scp_send(ssh2->mSession, *dstPath, mode, fileinfo.st_size);
#endif
if (!channel) {
char *errmsg;
int errlen;
libssh2_session_last_error(ssh2->mSession, &errmsg, &errlen, 0);
return scope.Close(String::New(errmsg, errlen));
}
char mem[1024];
ssize_t toWrite = fileinfo.st_size;
while (toWrite > 0) {
ssize_t nRead = read(fd, mem, 1024);
if (nRead < 0) {
int eNum = errno;
libssh2_channel_free(channel);
close(fd);
return scope.Close(String::New(strerror(eNum)));
}
int rc = libssh2_channel_write(channel, mem, nRead);
if (rc < 0) {
char *errmsg;
int errlen;
libssh2_session_last_error(ssh2->mSession, &errmsg, &errlen, 0);
libssh2_channel_free(channel);
close(fd);
return scope.Close(String::New(errmsg));
}
toWrite -= nRead;
}
close(fd);
libssh2_channel_free(channel);
return scope.Close(True());
}
void CLibssh2::download(const std::string& remote_filepath, std::ostream& out, int* num_bytes) throw (utils::CException, sys::CSyscallException)
{
LIBSSH2_CHANNEL* channel = static_cast<LIBSSH2_CHANNEL*>(open_scp_read_channel(remote_filepath));
try
{
*num_bytes = read_channel(channel, out);
libssh2_channel_free(channel);
}
catch (...)
{
libssh2_channel_free(channel);
throw;
}
}
/* {{{ libssh2_publickey_shutdown
* Shutdown the publickey subsystem
*/
LIBSSH2_API void libssh2_publickey_shutdown(LIBSSH2_PUBLICKEY *pkey)
{
LIBSSH2_SESSION *session = pkey->channel->session;
libssh2_channel_free(pkey->channel);
LIBSSH2_FREE(session, pkey);
}
static void ssh_stream_free(git_smart_subtransport_stream *stream)
{
ssh_stream *s = (ssh_stream *)stream;
ssh_subtransport *t = OWNING_SUBTRANSPORT(s);
int ret;
GIT_UNUSED(ret);
t->current_stream = NULL;
if (s->channel) {
libssh2_channel_close(s->channel);
libssh2_channel_free(s->channel);
s->channel = NULL;
}
if (s->session) {
libssh2_session_free(s->session), s->session = NULL;
}
if (s->socket.socket) {
ret = gitno_close(&s->socket);
assert(!ret);
}
git__free(s->url);
git__free(s);
}
static void ssh_stream_free(git_smart_subtransport_stream *stream)
{
ssh_stream *s = (ssh_stream *)stream;
ssh_subtransport *t;
if (!stream)
return;
t = OWNING_SUBTRANSPORT(s);
t->current_stream = NULL;
if (s->channel) {
libssh2_channel_close(s->channel);
libssh2_channel_free(s->channel);
s->channel = NULL;
}
if (s->session) {
libssh2_session_free(s->session);
s->session = NULL;
}
if (s->io) {
git_stream_close(s->io);
git_stream_free(s->io);
s->io = NULL;
}
git__free(s->url);
git__free(s);
}
bool RunCommand(const char *aCommand) {
if (!mSessionOK) {
return false;
}
LIBSSH2_CHANNEL *channel = libssh2_channel_open_session(mSession);
if (channel == NULL) {
strcpy(mErrorMessage, "Could not open SSH2 channel");
return false;
}
#ifdef libssh2_session_set_timeout
libssh2_session_set_timeout(mTimeout);
#endif
if (libssh2_channel_exec(channel, aCommand) == -1) {
strcpy(mErrorMessage, "Could not execute SSH2 command");
return false;
}
std::string response;
char buf[1025];
ssize_t size = 1024;
while (size == 1024) {
size = libssh2_channel_read(channel, buf, 1024);
buf[size] = '\0';
response += buf;
}
if (mResponse) {
delete [] mResponse;
}
mResponse = new char[response.size()+1];
strcpy(mResponse, response.c_str());
libssh2_channel_close(channel);
mExitCode = libssh2_channel_get_exit_status(channel);
libssh2_channel_free(channel);
return true;
}
void redisFree(redisContext *c) {
if (c == NULL)
return;
#ifdef FASTO
if(c->channel != NULL){
libssh2_channel_free(c->channel);
}
if(c->session != NULL){
libssh2_session_disconnect(c->session, "Client disconnecting normally");
libssh2_session_free(c->session);
}
#endif
if (c->fd > 0)
close(c->fd);
if (c->obuf != NULL)
sdsfree(c->obuf);
if (c->reader != NULL)
redisReaderFree(c->reader);
if (c->tcp.host)
free(c->tcp.host);
if (c->tcp.source_addr)
free(c->tcp.source_addr);
if (c->unix_sock.path)
free(c->unix_sock.path);
if (c->timeout)
free(c->timeout);
free(c);
}
static void
ssh_relay_event_cb(struct bufferevent *bev, short what, void *ptr)
{
obfsproxyssh_client_session_t *session = ptr;
struct evbuffer *buf;
assert(bev == session->ssh_ev);
if (what & (BEV_EVENT_EOF | BEV_EVENT_ERROR)) {
session->ssh_is_valid = 0;
libssh2_channel_free(session->ssh_channel);
session->ssh_channel = NULL;
libssh2_session_free(session->ssh_session);
session->ssh_session = NULL;
buf = bufferevent_get_output(session->socks_ev);
if (0 == session->socks_is_valid || 0 ==
evbuffer_get_length(buf))
session_free(session);
else {
bufferevent_disable(session->socks_ev, EV_READ);
bufferevent_setcb(session->socks_ev, NULL,
socks_relay_teardown_cb,
socks_event_cb, session);
}
}
}
int ssh::quit_channel()
{
int rc;
exitcode = 127;
while( (rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN )
waitsocket(_sock_fd, session);
if( rc == 0 )
{
exitcode = libssh2_channel_get_exit_status( channel );
libssh2_channel_get_exit_signal(channel, &exitsignal,
NULL, NULL, NULL, NULL, NULL);
}
if (exitsignal)
{
printf("\nGot signal: %s\n", exitsignal); }
/* else
printf("\nEXIT: %d bytecount: %d\n", exitcode, bytecount);*/
libssh2_channel_free(channel);
channel = NULL;
return 0;
}
static void
virNetSSHSessionDispose(void *obj)
{
virNetSSHSessionPtr sess = obj;
VIR_DEBUG("sess=0x%p", sess);
if (!sess)
return;
if (sess->channel) {
libssh2_channel_send_eof(sess->channel);
libssh2_channel_close(sess->channel);
libssh2_channel_free(sess->channel);
}
libssh2_knownhost_free(sess->knownHosts);
libssh2_agent_free(sess->agent);
if (sess->session) {
libssh2_session_disconnect(sess->session,
"libvirt: virNetSSHSessionFree()");
libssh2_session_free(sess->session);
}
virNetSSHSessionAuthMethodsFree(sess);
VIR_FREE(sess->channelCommand);
VIR_FREE(sess->hostname);
VIR_FREE(sess->knownHostsFile);
VIR_FREE(sess->authPath);
}
static void ssh_stream_free(git_smart_subtransport_stream *stream)
{
ssh_stream *s = (ssh_stream *)stream;
ssh_subtransport *t = OWNING_SUBTRANSPORT(s);
int ret;
GIT_UNUSED(ret);
t->current_stream = NULL;
if (s->channel) {
libssh2_channel_close(s->channel);
libssh2_channel_free(s->channel);
s->channel = NULL;
}
if (s->session) {
libssh2_session_free(s->session);
s->session = NULL;
}
if (s->socket.socket) {
(void)gitno_close(&s->socket);
/* can't do anything here with error return value */
}
git__free(s->url);
git__free(s);
}
void PJSSH::ExecuteCmd(const char* aCommand) const
{
if( !SessionIsOk )
{
std::ostringstream o;
o<<"Can not execute command since the SSH session is not set up ok. "
"Last error message: ";
throw std::logic_error(o.str());
}
// Try to open a channel to be used for executing the command.
LIBSSH2_CHANNEL* channel = libssh2_channel_open_session(mSession);
if( NULL == channel )
{
throw std::runtime_error("Could not open communication channel for "
"executing remote command.");
}
// Execute the command.
if( -1 == libssh2_channel_exec(channel,aCommand))
{
throw std::runtime_error("Failed to execute the remote command.");
}
// Close the channel.
libssh2_channel_close(channel);
// Free resources.
libssh2_channel_free(channel);
}
cql_ccm_bridge_t::~cql_ccm_bridge_t() {
libssh2_channel_free(_ssh_internals->_channel);
close_ssh_session();
close_socket();
libssh2_exit();
finalize_socket_library();
}
static int
netsnmp_ssh_close(netsnmp_transport *t)
{
int rc = -1;
netsnmp_ssh_addr_pair *addr_pair = NULL;
if (t != NULL && t->data != NULL) {
addr_pair = (netsnmp_ssh_addr_pair *) t->data;
}
if (t != NULL && addr_pair && t->sock >= 0) {
DEBUGMSGTL(("ssh", "close fd %d\n", t->sock));
if (addr_pair->channel) {
libssh2_channel_close(addr_pair->channel);
libssh2_channel_free(addr_pair->channel);
addr_pair->channel = NULL;
}
if (addr_pair->session) {
libssh2_session_disconnect(addr_pair->session, "Normal Shutdown");
libssh2_session_free(addr_pair->session);
addr_pair->session = NULL;
}
#ifndef HAVE_CLOSESOCKET
rc = close(t->sock);
#else
rc = closesocket(t->sock);
#endif
t->sock = -1;
#ifdef SNMPSSHDOMAIN_USE_EXTERNAL_PIPE
if (!addr_pair->session && !addr_pair->channel) {
/* XXX: make configurable */
unlink(addr_pair->socket_path);
}
#else /* we're called directly by sshd and use stdin/out */
/* on the server: close stdin/out */
close(STDIN_FILENO);
close(STDOUT_FILENO);
#endif /* ! SNMPSSHDOMAIN_USE_EXTERNAL_PIPE */
} else {
#ifndef SNMPSSHDOMAIN_USE_EXTERNAL_PIPE
/* on the server: close stdin/out */
close(STDIN_FILENO);
close(STDOUT_FILENO);
#endif /* ! SNMPSSHDOMAIN_USE_EXTERNAL_PIPE */
}
return rc;
}
/**
* seashell_tunnel_free (struct seashell_connection* conn)
* Closes the tunnel connection.
*
* Arguments:
* conn - Connection to close.
*/
void seashell_tunnel_free (struct seashell_connection* conn) {
if (conn) {
libssh2_channel_free(conn->channel);
libssh2_session_disconnect(conn->session, "Seashell's done!");
libssh2_session_free(conn->session);
close(conn->sockfd);
free(conn);
}
}
void Parser::closeChannel(LIBSSH2_CHANNEL *channel)
{
if(channel)
{
//libssh2_channel_wait_closed(channel);
libssh2_channel_close(channel);
libssh2_channel_free(channel); // free will auto close the channel
}
}
void cql_ccm_bridge_t::start_ssh_connection(const cql_ccm_bridge_configuration_t& settings) {
_ssh_internals->_session = libssh2_session_init();
if (!_ssh_internals->_session)
throw cql_ccm_bridge_exception_t("cannot create ssh session");
try {
if (libssh2_session_handshake(_ssh_internals->_session, _socket))
throw cql_ccm_bridge_exception_t("ssh session handshake failed");
// get authentication modes supported by server
char* auth_methods = libssh2_userauth_list(_ssh_internals->_session,
settings.ssh_username().c_str(),
settings.ssh_username().size());
int auth_result;
if (!settings.ssh_public_key_file().empty() && !settings.ssh_private_key_file().empty()) {
auth_result = libssh2_userauth_publickey_fromfile(_ssh_internals->_session,
settings.ssh_username().c_str(),
settings.ssh_public_key_file().c_str(),
settings.ssh_private_key_file().c_str(),
"");
} else {
if (strstr(auth_methods, "password") == NULL)
throw cql_ccm_bridge_exception_t("server doesn't support authentication by password");
// try to login using username and password
auth_result = libssh2_userauth_password(_ssh_internals->_session,
settings.ssh_username().c_str(),
settings.ssh_password().c_str());
}
if (auth_result != 0)
throw cql_ccm_bridge_exception_t("invalid password or user");
if (!(_ssh_internals->_channel = libssh2_channel_open_session(_ssh_internals->_session)))
throw cql_ccm_bridge_exception_t("cannot open ssh session");
try {
if (libssh2_channel_request_pty(_ssh_internals->_channel, "vanilla"))
throw cql_ccm_bridge_exception_t("pty requests failed");
if (libssh2_channel_shell(_ssh_internals->_channel))
throw cql_ccm_bridge_exception_t("cannot open shell");
//TODO: Copy SSL files to remote connection for CCM to enable SSL with Cassandra instances (or use keytool to simply generate the files remotely)
} catch (cql_ccm_bridge_exception_t&) {
// calls channel_close
libssh2_channel_free(_ssh_internals->_channel);
}
} catch (cql_ccm_bridge_exception_t&) {
close_ssh_session();
throw;
}
}
/*
* Cleanup data structures.
*/
static void cleanup(int code)
{
int ret;
char buf[1024];
if (ssh_info) {
close(ssh_info->forward_sock);
close(ssh_info->listen_sock);
if (ssh_info->channel) {
libssh2_channel_free(ssh_info->channel);
}
if (ssh_info->session) {
libssh2_session_disconnect(ssh_info->session,
"Client disconnecting normally");
libssh2_session_free(ssh_info->session);
}
free(ssh_info);
}
if (opt_dnat) {
/* Remove DNAT rule */
snprintf(buf, sizeof(buf), IPTABLE_DEL_DNAT, local_ip, local_port);
ret = system(buf);
if (ret != 0) {
DBG("DNAT iptables command failed\n%s", buf);
} else {
DBG("UDP traffic on port 53 restored");
}
}
if (opt_netfilter != -1) {
snprintf(buf, sizeof(buf), IPTABLE_DEL_QUEUE,
local_port, opt_netfilter);
ret = system(buf);
if (ret != 0) {
DBG("NFQUEUE iptables command failed\n%s", buf);
} else {
DBG("Queuing UDP traffic on port 53 removed on queue num %d",
opt_netfilter);
}
}
/* Always last */
if (code < 0) {
exit(EXIT_FAILURE);
} else {
exit(EXIT_SUCCESS);
}
}
int CLibssh2::close_ssh_channel(void* channel, std::string* exitsignal, std::string* errmsg)
{
int exitcode = 127; // 127: command not exists
LIBSSH2_CHANNEL* channel_ = static_cast<LIBSSH2_CHANNEL*>(channel);
while (channel_ != NULL)
{
int errcode = libssh2_channel_close(channel_);
if (0 == errcode)
{
char* errmsg_ = NULL;
char* exitsignal_ = NULL;
exitcode = libssh2_channel_get_exit_status(channel_);
if (exitcode != 0) // 0 success
{
// 调用端可以strerror(*exitcode)取得出错原因
libssh2_channel_get_exit_signal(channel_, &exitsignal_, NULL, &errmsg_, NULL, NULL, NULL);
if (errmsg_ != NULL)
{
*errmsg = errmsg_;
free(errmsg_);
}
if (exitsignal_ != NULL)
{
*exitsignal = exitsignal_;
free(exitsignal_);
}
}
libssh2_channel_free(channel_);
channel_ = NULL;
break;
}
else if (LIBSSH2_ERROR_EAGAIN == errcode)
{
if (!timedwait_socket())
{
THROW_SYSCALL_EXCEPTION("channel close timeout", ETIMEDOUT, "poll");
}
}
else
{
THROW_EXCEPTION(get_session_errmsg(), errcode);
}
}
return exitcode;
}
void
mx_channel_close (mx_channel_t *mcp)
{
if (mcp == NULL)
return;
if (mcp->mc_client) {
mx_sock_t *msp = mcp->mc_client;
if (mx_mti(msp)->mti_set_channel)
mx_mti(msp)->mti_set_channel(msp, NULL, NULL);
}
libssh2_channel_free(mcp->mc_channel);
mcp->mc_channel = NULL;
free(mcp);
}
static int php_ssh2_channel_stream_close(php_stream *stream, int close_handle TSRMLS_DC)
{
php_ssh2_channel_data *abstract = (php_ssh2_channel_data*)stream->abstract;
if (!abstract->refcount || (--(*(abstract->refcount)) == 0)) {
/* Last one out, turn off the lights */
if (abstract->refcount) {
efree(abstract->refcount);
}
libssh2_channel_eof(abstract->channel);
libssh2_channel_free(abstract->channel);
zend_list_delete(abstract->session_rsrc);
}
efree(abstract);
return 0;
}
int ssh_guac_client_free_handler(guac_client* client) {
ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data;
/* Close SSH channel */
if (guac_client_data->term_channel != NULL) {
libssh2_channel_send_eof(guac_client_data->term_channel);
libssh2_channel_close(guac_client_data->term_channel);
}
/* Free terminal */
guac_terminal_free(guac_client_data->term);
pthread_join(guac_client_data->client_thread, NULL);
/* Free channels */
libssh2_channel_free(guac_client_data->term_channel);
/* Clean up SFTP */
if (guac_client_data->sftp_session)
libssh2_sftp_shutdown(guac_client_data->sftp_session);
if (guac_client_data->sftp_ssh_session) {
libssh2_session_disconnect(guac_client_data->sftp_ssh_session, "Bye");
libssh2_session_free(guac_client_data->sftp_ssh_session);
}
/* Free session */
if (guac_client_data->session != NULL)
libssh2_session_free(guac_client_data->session);
/* Free auth key */
if (guac_client_data->key != NULL)
ssh_key_free(guac_client_data->key);
/* Free clipboard */
guac_common_clipboard_free(guac_client_data->clipboard);
/* Free cursors */
guac_ssh_cursor_free(client, guac_client_data->ibar_cursor);
guac_ssh_cursor_free(client, guac_client_data->blank_cursor);
/* Free generic data struct */
free(client->data);
return 0;
}
/*
* Get DNS query using SSH transport layer.
*/
static ssize_t dig_ssh_request(struct ssh_session *ssh_info,
char *buf, size_t buf_size, ssize_t len)
{
int ret;
ssize_t recv_size;
do {
ret = libssh2_channel_write(ssh_info->channel, buf, len);
if (ret < 0) {
ERR("libssh2_channel_write: %d", ret);
goto error;
}
DBG("DNS request of size %ld sent to ssh channel", len);
recv_size = libssh2_channel_read(ssh_info->channel, buf, buf_size);
if (recv_size < 0) {
char *buf;
ERR("SSH channel read failed");
libssh2_session_last_error(ssh_info->session, &buf, NULL, 0);
ERR("Failure: %s", buf);
} else if (recv_size == 0) {
ret = libssh2_channel_eof(ssh_info->channel);
if (ret) {
DBG("SSH server disconnected!");
libssh2_channel_close(ssh_info->channel);
libssh2_channel_free(ssh_info->channel);
/* Create new channel */
ret = ssh_setup_tunnel(ssh_info, dns_ip);
if (ret < 0) {
goto error;
}
}
} else {
DBG("DNS reply red from ssh channel (size: %ld)",
recv_size);
goto end;
}
} while (1);
end:
return recv_size;
error:
return -1;
}
int close_ssh_connection(void* ssh_session)
{
int ec;
SSH_SESSION* p_session;
p_session = (SSH_SESSION*)ssh_session;
if(!(login_check(p_session)))
{
debug_log(SSH_TERMINAL_NO_SESSION_ERROR, "close_ssh_connection : no session.");
return SSH_TERMINAL_NO_SESSION_ERROR;
}
if(p_session->session_param->channel != NULL)
{
exit_thread(ssh_session);
while((ec = libssh2_channel_close(p_session->session_param->channel)) == LIBSSH2_ERROR_EAGAIN)
{
waitsocket(p_session->session_param->sock, p_session->session_param->session, TIMEOUT_SEC);
}
libssh2_channel_free(p_session->session_param->channel);
p_session->session_param->channel = NULL;
}
while((ec = libssh2_session_disconnect(p_session->session_param->session, "normal")) == LIBSSH2_ERROR_EAGAIN)
{
waitsocket(p_session->session_param->sock, p_session->session_param->session, TIMEOUT_SEC);
}
if(ec < 0)
{
debug_log(SSH_TERMINAL_SESSION_DISCONNECT_ERROR, "close_ssh_connection : disconnect failed.");
return SSH_TERMINAL_SESSION_DISCONNECT_ERROR;
}
libssh2_session_free(p_session->session_param->session);
close(p_session->session_param->sock);
free(p_session->session_param);
ori_thread_mutex_free(p_session->thread_param->command_queue_mutex);
ori_thread_mutex_free(p_session->thread_param->add_list_mutex);
ori_thread_condition_free(p_session->thread_param->command_queue_condition);
ori_thread_condition_free(p_session->thread_param->add_list_condition);
free(p_session->thread_param);
free(p_session);
return 0;
}
void clear(LIBSSH2_SESSION *session, LIBSSH2_CHANNEL *channel, int sock)
{
int exitcode = 127, rc;
char *exitsignal=(char *)"none";
if( rc == 0 )
{
exitcode = libssh2_channel_get_exit_status( channel );
libssh2_channel_get_exit_signal(channel, &exitsignal, NULL, NULL, NULL, NULL, NULL);
}
libssh2_channel_free(channel);
channel = NULL;
libssh2_session_disconnect(session, "");
libssh2_session_free(session);
close(sock);
libssh2_exit();
}
int guac_ssh_client_free_handler(guac_client* client) {
guac_ssh_client* ssh_client = (guac_ssh_client*) client->data;
/* Close SSH channel */
if (ssh_client->term_channel != NULL) {
libssh2_channel_send_eof(ssh_client->term_channel);
libssh2_channel_close(ssh_client->term_channel);
}
/* Free terminal (which may still be using term_channel) */
if (ssh_client->term != NULL) {
guac_terminal_free(ssh_client->term);
pthread_join(ssh_client->client_thread, NULL);
}
/* Free terminal channel now that the terminal is finished */
if (ssh_client->term_channel != NULL)
libssh2_channel_free(ssh_client->term_channel);
/* Clean up the SFTP filesystem object and session */
if (ssh_client->sftp_filesystem) {
guac_common_ssh_destroy_sftp_filesystem(ssh_client->sftp_filesystem);
guac_common_ssh_destroy_session(ssh_client->sftp_session);
}
/* Free interactive SSH session */
if (ssh_client->session != NULL)
guac_common_ssh_destroy_session(ssh_client->session);
/* Free SSH client credentials */
if (ssh_client->user != NULL)
guac_common_ssh_destroy_user(ssh_client->user);
/* Free parsed settings */
if (ssh_client->settings != NULL)
guac_ssh_settings_free(ssh_client->settings);
/* Free client structure */
free(ssh_client);
guac_common_ssh_uninit();
return 0;
}
static void
ssh_relay_teardown_cb(obfsproxyssh_client_session_t *session)
{
struct evbuffer *buf;
int rval;
buf = bufferevent_get_input(session->socks_ev);
if (1 == session->ssh_is_valid && 0 < evbuffer_get_length(buf)) {
socks_relay_cb(session->socks_ev, session);
return;
}
buf = bufferevent_get_output(session->ssh_ev);
if (1 == session->ssh_is_valid && 0 < evbuffer_get_length(buf))
return;
if (NULL != session->ssh_channel) {
rval = libssh2_channel_close(session->ssh_channel);
if (LIBSSH2_ERROR_EAGAIN == rval)
return;
libssh2_channel_free(session->ssh_channel);
session->ssh_channel = NULL;
}
if (1 == session->ssh_is_valid && 0 < evbuffer_get_length(buf))
return;
if (NULL != session->ssh_session) {
rval = libssh2_session_disconnect(session->ssh_session,
ssh_client_profile_get_disconnect_msg());
if (LIBSSH2_ERROR_EAGAIN == rval)
return;
libssh2_session_free(session->ssh_session);
session->ssh_session = NULL;
}
if (1 == session->ssh_is_valid && 0 < evbuffer_get_length(buf))
return;
session_free(session);
}
int open_channel_and_exec(LIBSSH2_SESSION *session, int sock, const char *cmd,
char **out)
{
int rc;
LIBSSH2_CHANNEL *chan;
chan = waitfor_open_channel(session, sock);
if (!chan)
return -1;
while ((rc = libssh2_channel_exec(chan, cmd)) == LIBSSH2_ERROR_EAGAIN)
waitsocket(session, sock);
if (rc != 0)
return -1;
rc = read_channel(chan, session, sock, out);
while ((rc = libssh2_channel_close(chan)) == LIBSSH2_ERROR_EAGAIN)
waitsocket(session, sock);
libssh2_channel_free(chan);
return 0;
}
void redisFree(redisContext *c) {
if (c == NULL)
return;
#ifdef FASTOREDIS
if(c->channel != NULL){
libssh2_channel_free(c->channel);
}
if(c->session != NULL){
libssh2_session_disconnect(c->session, "Client disconnecting normally");
libssh2_session_free(c->session);
}
#endif
if (c->fd > 0)
close(c->fd);
if (c->obuf != NULL)
sdsfree(c->obuf);
if (c->reader != NULL)
redisReaderFree(c->reader);
free(c);
}