static int pkd_exec_hello(int fd, struct pkd_daemon_args *args) {
int rc = -1;
ssh_bind b = NULL;
ssh_session s = NULL;
ssh_event e = NULL;
ssh_channel c = NULL;
enum ssh_bind_options_e opts = -1;
int level = args->opts.libssh_log_level;
enum pkd_hostkey_type_e type = args->type;
const char *hostkeypath = args->hostkeypath;
pkd_state.eof_received = 0;
pkd_state.close_received = 0;
pkd_state.req_exec_received = 0;
b = ssh_bind_new();
if (b == NULL) {
pkderr("ssh_bind_new\n");
goto outclose;
}
if (type == PKD_RSA) {
opts = SSH_BIND_OPTIONS_RSAKEY;
} else if (type == PKD_ED25519) {
opts = SSH_BIND_OPTIONS_HOSTKEY;
#ifdef HAVE_DSA
} else if (type == PKD_DSA) {
opts = SSH_BIND_OPTIONS_DSAKEY;
#endif
} else if (type == PKD_ECDSA) {
opts = SSH_BIND_OPTIONS_ECDSAKEY;
} else {
pkderr("unknown kex algorithm: %d\n", type);
rc = -1;
goto outclose;
}
rc = ssh_bind_options_set(b, opts, hostkeypath);
if (rc != 0) {
pkderr("ssh_bind_options_set: %s\n", ssh_get_error(b));
goto outclose;
}
rc = ssh_bind_options_set(b, SSH_BIND_OPTIONS_LOG_VERBOSITY, &level);
if (rc != 0) {
pkderr("ssh_bind_options_set log verbosity: %s\n", ssh_get_error(b));
goto outclose;
}
s = ssh_new();
if (s == NULL) {
pkderr("ssh_new\n");
goto outclose;
}
/*
* ssh_bind_accept loads host key as side-effect. If this
* succeeds, the given 'fd' will be closed upon 'ssh_free(s)'.
*/
rc = ssh_bind_accept_fd(b, s, fd);
if (rc != SSH_OK) {
pkderr("ssh_bind_accept_fd: %s\n", ssh_get_error(b));
goto outclose;
}
/* accept only publickey-based auth */
ssh_set_auth_methods(s, SSH_AUTH_METHOD_PUBLICKEY);
/* initialize callbacks */
ssh_callbacks_init(&pkd_server_cb);
pkd_server_cb.userdata = &c;
rc = ssh_set_server_callbacks(s, &pkd_server_cb);
if (rc != SSH_OK) {
pkderr("ssh_set_server_callbacks: %s\n", ssh_get_error(s));
goto out;
}
/* first do key exchange */
rc = ssh_handle_key_exchange(s);
if (rc != SSH_OK) {
pkderr("ssh_handle_key_exchange: %s\n", ssh_get_error(s));
goto out;
}
/* setup and pump event to carry out exec channel */
e = ssh_event_new();
if (e == NULL) {
pkderr("ssh_event_new\n");
goto out;
}
rc = ssh_event_add_session(e, s);
if (rc != SSH_OK) {
pkderr("ssh_event_add_session\n");
goto out;
}
/* poll until exec channel established */
while ((ctx.keep_going != 0) &&
(rc != SSH_ERROR) && (pkd_state.req_exec_received == 0)) {
rc = ssh_event_dopoll(e, -1 /* infinite timeout */);
}
if (rc == SSH_ERROR) {
pkderr("ssh_event_dopoll\n");
goto out;
} else if (c == NULL) {
pkderr("poll loop exited but exec channel not ready\n");
rc = -1;
goto out;
}
rc = ssh_channel_write(c, "hello\n", 6); /* XXX: customizable payloads */
if (rc != 6) {
pkderr("ssh_channel_write partial (%d)\n", rc);
}
rc = ssh_channel_request_send_exit_status(c, 0);
if (rc != SSH_OK) {
pkderr("ssh_channel_request_send_exit_status: %s\n",
ssh_get_error(s));
goto out;
}
rc = ssh_channel_send_eof(c);
if (rc != SSH_OK) {
pkderr("ssh_channel_send_eof: %s\n", ssh_get_error(s));
goto out;
}
rc = ssh_channel_close(c);
if (rc != SSH_OK) {
pkderr("ssh_channel_close: %s\n", ssh_get_error(s));
goto out;
}
while ((ctx.keep_going != 0) &&
(pkd_state.eof_received == 0) &&
(pkd_state.close_received == 0)) {
rc = ssh_event_dopoll(e, 1000 /* milliseconds */);
if (rc == SSH_ERROR) {
/* log, but don't consider this fatal */
pkdout("ssh_event_dopoll for eof + close: %s\n", ssh_get_error(s));
rc = 0;
break;
} else {
rc = 0;
}
}
while ((ctx.keep_going != 0) &&
(ssh_is_connected(s))) {
rc = ssh_event_dopoll(e, 1000 /* milliseconds */);
if (rc == SSH_ERROR) {
/* log, but don't consider this fatal */
pkdout("ssh_event_dopoll for session connection: %s\n", ssh_get_error(s));
rc = 0;
break;
} else {
rc = 0;
}
}
goto out;
outclose:
close(fd);
out:
if (c != NULL) {
ssh_channel_free(c);
}
if (e != NULL) {
ssh_event_remove_session(e, s);
ssh_event_free(e);
}
if (s != NULL) {
ssh_disconnect(s);
ssh_free(s);
}
if (b != NULL) {
ssh_bind_free(b);
}
return rc;
}
static void handle_session(ssh_event event, ssh_session session) {
int n;
int rc = 0;
/* Structure for storing the pty size. */
struct winsize wsize = {
.ws_row = 0,
.ws_col = 0,
.ws_xpixel = 0,
.ws_ypixel = 0
};
/* Our struct holding information about the channel. */
struct channel_data_struct cdata = {
.pid = 0,
.pty_master = -1,
.pty_slave = -1,
.child_stdin = -1,
.child_stdout = -1,
.child_stderr = -1,
.event = NULL,
.winsize = &wsize
};
/* Our struct holding information about the session. */
struct session_data_struct sdata = {
.channel = NULL,
.auth_attempts = 0,
.authenticated = 0
};
struct ssh_channel_callbacks_struct channel_cb = {
.userdata = &cdata,
.channel_pty_request_function = pty_request,
.channel_pty_window_change_function = pty_resize,
.channel_shell_request_function = shell_request,
.channel_exec_request_function = exec_request,
.channel_data_function = data_function,
.channel_subsystem_request_function = subsystem_request
};
struct ssh_server_callbacks_struct server_cb = {
.userdata = &sdata,
.auth_password_function = auth_password,
.channel_open_request_session_function = channel_open,
};
if (authorizedkeys[0]) {
server_cb.auth_pubkey_function = auth_publickey;
ssh_set_auth_methods(session, SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_PUBLICKEY);
} else
ssh_set_auth_methods(session, SSH_AUTH_METHOD_PASSWORD);
ssh_callbacks_init(&server_cb);
ssh_callbacks_init(&channel_cb);
ssh_set_server_callbacks(session, &server_cb);
if (ssh_handle_key_exchange(session) != SSH_OK) {
fprintf(stderr, "%s\n", ssh_get_error(session));
return;
}
ssh_event_add_session(event, session);
n = 0;
while (sdata.authenticated == 0 || sdata.channel == NULL) {
/* If the user has used up all attempts, or if he hasn't been able to
* authenticate in 10 seconds (n * 100ms), disconnect. */
if (sdata.auth_attempts >= 3 || n >= 100) {
return;
}
if (ssh_event_dopoll(event, 100) == SSH_ERROR) {
fprintf(stderr, "%s\n", ssh_get_error(session));
return;
}
n++;
}
ssh_set_channel_callbacks(sdata.channel, &channel_cb);
do {
/* Poll the main event which takes care of the session, the channel and
* even our child process's stdout/stderr (once it's started). */
if (ssh_event_dopoll(event, -1) == SSH_ERROR) {
ssh_channel_close(sdata.channel);
}
/* If child process's stdout/stderr has been registered with the event,
* or the child process hasn't started yet, continue. */
if (cdata.event != NULL || cdata.pid == 0) {
continue;
}
/* Executed only once, once the child process starts. */
cdata.event = event;
/* If stdout valid, add stdout to be monitored by the poll event. */
if (cdata.child_stdout != -1) {
if (ssh_event_add_fd(event, cdata.child_stdout, POLLIN, process_stdout,
sdata.channel) != SSH_OK) {
fprintf(stderr, "Failed to register stdout to poll context\n");
ssh_channel_close(sdata.channel);
}
}
/* If stderr valid, add stderr to be monitored by the poll event. */
if (cdata.child_stderr != -1){
if (ssh_event_add_fd(event, cdata.child_stderr, POLLIN, process_stderr,
sdata.channel) != SSH_OK) {
fprintf(stderr, "Failed to register stderr to poll context\n");
ssh_channel_close(sdata.channel);
}
}
} while(ssh_channel_is_open(sdata.channel) &&
(cdata.pid == 0 || waitpid(cdata.pid, &rc, WNOHANG) == 0));
close(cdata.pty_master);
close(cdata.child_stdin);
close(cdata.child_stdout);
close(cdata.child_stderr);
/* Remove the descriptors from the polling context, since they are now
* closed, they will always trigger during the poll calls. */
ssh_event_remove_fd(event, cdata.child_stdout);
ssh_event_remove_fd(event, cdata.child_stderr);
/* If the child process exited. */
if (kill(cdata.pid, 0) < 0 && WIFEXITED(rc)) {
rc = WEXITSTATUS(rc);
ssh_channel_request_send_exit_status(sdata.channel, rc);
/* If client terminated the channel or the process did not exit nicely,
* but only if something has been forked. */
} else if (cdata.pid > 0) {
kill(cdata.pid, SIGKILL);
}
ssh_channel_send_eof(sdata.channel);
ssh_channel_close(sdata.channel);
/* Wait up to 5 seconds for the client to terminate the session. */
for (n = 0; n < 50 && (ssh_get_status(session) & SESSION_END) == 0; n++) {
ssh_event_dopoll(event, 100);
}
}
/* SIGCHLD handler for cleaning up dead children. */
static void sigchld_handler(int signo) {
(void) signo;
while (waitpid(-1, NULL, WNOHANG) > 0);
}
int main(int argc, char **argv) {
ssh_bind sshbind;
ssh_session session;
ssh_event event;
struct sigaction sa;
int rc;
/* Set up SIGCHLD handler. */
sa.sa_handler = sigchld_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
if (sigaction(SIGCHLD, &sa, NULL) != 0) {
fprintf(stderr, "Failed to register SIGCHLD handler\n");
return 1;
}
rc = ssh_init();
if (rc < 0) {
fprintf(stderr, "ssh_init failed\n");
return 1;
}
sshbind = ssh_bind_new();
if (sshbind == NULL) {
fprintf(stderr, "ssh_bind_new failed\n");
return 1;
}
#ifdef HAVE_ARGP_H
argp_parse(&argp, argc, argv, 0, 0, sshbind);
#else
(void) argc;
(void) argv;
set_default_keys(sshbind, 0, 0, 0);
#endif /* HAVE_ARGP_H */
if(ssh_bind_listen(sshbind) < 0) {
fprintf(stderr, "%s\n", ssh_get_error(sshbind));
return 1;
}
while (1) {
session = ssh_new();
if (session == NULL) {
fprintf(stderr, "Failed to allocate session\n");
continue;
}
/* Blocks until there is a new incoming connection. */
if(ssh_bind_accept(sshbind, session) != SSH_ERROR) {
switch(fork()) {
case 0:
/* Remove the SIGCHLD handler inherited from parent. */
sa.sa_handler = SIG_DFL;
sigaction(SIGCHLD, &sa, NULL);
/* Remove socket binding, which allows us to restart the
* parent process, without terminating existing sessions. */
ssh_bind_free(sshbind);
event = ssh_event_new();
if (event != NULL) {
/* Blocks until the SSH session ends by either
* child process exiting, or client disconnecting. */
handle_session(event, session);
ssh_event_free(event);
} else {
fprintf(stderr, "Could not create polling context\n");
}
ssh_disconnect(session);
ssh_free(session);
exit(0);
case -1:
fprintf(stderr, "Failed to fork\n");
}
} else {
fprintf(stderr, "%s\n", ssh_get_error(sshbind));
}
/* Since the session has been passed to a child fork, do some cleaning
* up at the parent process. */
ssh_disconnect(session);
ssh_free(session);
}
ssh_bind_free(sshbind);
ssh_finalize();
return 0;
}
int SSHThread( void *data )
{
// TODO: Hogne was here, disabling this problem child.. :)
return 0;
#ifdef ENABLE_SSH
ssh_session session = NULL;
ssh_bind sshbind = NULL;
ssh_event mainloop;
struct ssh_server_callbacks_struct cb = {
.userdata = NULL,
.auth_password_function = auth_password,
.auth_gssapi_mic_function = auth_gssapi_mic,
.channel_open_request_session_function = new_session_channel
};
char buf[2048];
int i;
int r;
DEBUG("Starting SSH Process\n");
SSHServer *ts = (SSHServer *)data;
if( !ts ) return 0;
ts->sshs_FriendHome = getenv( "FRIEND_HOME" );
int len = strlen( ts->sshs_FriendHome );
ts->sshs_RSAKeyHome = calloc( len+64, sizeof(char) );
ts->sshs_DSAKeyHome = calloc( len+64, sizeof(char) );
strcpy( ts->sshs_RSAKeyHome, ts->sshs_FriendHome );
strcpy( ts->sshs_DSAKeyHome, ts->sshs_FriendHome );
strcat( ts->sshs_RSAKeyHome, "keys/ssh_host_rsa_key" );
strcat( ts->sshs_DSAKeyHome, "keys/ssh_host_dsa_key" );
//DEBUG("SSH sshs_RSAKeyHome set to %s\n", ts->sshs_RSAKeyHome );
sshbind = ssh_bind_new();
BOOL welcomeMessage = FALSE;
ssh_bind_options_set( sshbind, SSH_BIND_OPTIONS_DSAKEY, ts->sshs_DSAKeyHome );
ssh_bind_options_set( sshbind, SSH_BIND_OPTIONS_RSAKEY, ts->sshs_RSAKeyHome );
//ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, arg);
//DEBUG("IMPORT RSA KEY %s\n", ts->sshs_RSAKeyHome );
ssh_bind_options_set( sshbind, SSH_BIND_OPTIONS_BINDPORT_STR, SSH_SERVER_PORT );
//verbose
ssh_bind_options_set( sshbind, SSH_BIND_OPTIONS_LOG_VERBOSITY_STR, "2" );
ssh_bind_options_set( sshbind, SSH_BIND_OPTIONS_BINDADDR, "127.0.0.1" );
if( ts->sshs_RSAKeyHome ) free( ts->sshs_RSAKeyHome );
if( ts->sshs_DSAKeyHome ) free( ts->sshs_DSAKeyHome );
// TODO: ts->sshs_Quit sometimes can not be read!
while( ts != NULL && !ts->sshs_Quit )
{
DEBUG("Server options set\n");
#ifdef WITH_PCAP
set_pcap(session);
#endif
DEBUG("Server before bind\n");
if( ssh_bind_listen( sshbind )<0 )
{
ERROR("Error listening to socket: %s\n",ssh_get_error(sshbind) );
break;
}
DEBUG("Server before accept\n");
session=ssh_new();
r = ssh_bind_accept( sshbind , session );
if( r==SSH_ERROR )
{
ERROR("error accepting a connection : %s\n",ssh_get_error(sshbind));
break;
}
ssh_callbacks_init( &cb );
SSHSession *sess = calloc( 1, sizeof( SSHSession ) );
sess->sshs_Session = session;
cb.userdata = sess;
DEBUG("User data set\n");
ssh_set_server_callbacks( session, &cb );
if ( ssh_handle_key_exchange( session ) )
{
ERROR("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
continue;
//goto disconnect;
}
DEBUG("Connection accepted\n");
ssh_set_auth_methods( session,SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_GSSAPI_MIC );
//
// New session/connection put it into thread
//
switch( fork() )
{
case 0:
// Remove the SIGCHLD handler inherited from parent
signal(SIGCHLD, SIG_DFL);
mainloop = ssh_event_new();
ssh_event_add_session( mainloop, session );
while( !(sess->sshs_Authenticated && sess->sshs_Chan != NULL) )
{
if( sess->sshs_Error )
{
ERROR("SSHSession error %d\n", sess->sshs_Error );
break;
}
r = ssh_event_dopoll( mainloop, -1 );
if( r == SSH_ERROR )
{
ERROR("Error : %s\n",ssh_get_error( session ) );
ssh_disconnect( session );
return 1;
}
strcpy( buf, "------------------------------------------------------\n\r" \
"--- Welcome in FC server, use help to work with me ---\n\r" \
"------------------------------------------------------\n\r" );
ssh_channel_write( sess->sshs_Chan, buf, strlen( buf ) );
if( sess->sshs_Path == NULL )
{
sess->sshs_Path = calloc( 1024, sizeof(char) );
sess->sshs_DispText = calloc( 1024+48, sizeof(char) );
}
strcpy( sess->sshs_Path, "/" );
if( sess->sshs_Usr )
{
sprintf( sess->sshs_DispText, "%s:%s ", sess->sshs_Usr->u_Name, sess->sshs_Path );
}else{
sprintf( sess->sshs_DispText, ":%s ", sess->sshs_Path );
}
int i = 0;
do
{
ssh_channel_write( sess->sshs_Chan, sess->sshs_DispText, strlen( sess->sshs_DispText ) );
i = ssh_channel_read( sess->sshs_Chan, buf, 2048, 0 );
if( i > 0 )
{
DEBUG("READING FROM CHANNEL %d - size %d %d %c -n %d\n", i, strlen( buf ), buf[0], buf[0], '\n' );
//ssh_channel_write( sess->sshs_Chan, buf, 1 );
handleSSHCommands( sess, buf, i );
}
if( sess->sshs_Quit )
{
break;
}
}
while( i>0 );
if( sess->sshs_Quit )
break;
}
DEBUG("Closing ssh connection\n");
ssh_event_free( mainloop );
ssh_disconnect( session );
ssh_free( session );
if( sess->sshs_DispText )
{
FFree( sess->sshs_DispText );
}
if( sess->sshs_Path )
{
FFree( sess->sshs_Path );
}
DEBUG("Connection released\n");
FFree( sess );
abort();
DEBUG("AUTH\n");
break;
case -1:
ERROR("Cannot create fork!\n");
break;
}
#ifdef WITH_PCAP
cleanup_pcap();
#endif
} // main loop
disconnect:
DEBUG("DISCONNECTED\n");
#endif // ENABLE_SSH
return 0;
}
static void client_bootstrap(struct tmate_session *_session)
{
struct tmate_ssh_client *client = &_session->ssh_client;
int grace_period = TMATE_SSH_GRACE_PERIOD;
ssh_event mainloop;
ssh_session session = client->session;
tmate_notice("Bootstrapping ssh client ip=%s", client->ip_address);
_session->ev_base = osdep_event_init();
/* new process group, we don't want to die with our parent (upstart) */
setpgid(0, 0);
{
int flag = 1;
setsockopt(ssh_get_fd(session), IPPROTO_TCP, TCP_NODELAY,
&flag, sizeof(flag));
}
signal(SIGALRM, handle_sigalrm);
alarm(grace_period);
/*
* We should die early if we can't connect to proxy. This way the
* tmate daemon will pick another server to work on.
*/
_session->proxy_fd = -1;
if (tmate_has_proxy())
_session->proxy_fd = tmate_connect_to_proxy();
ssh_server_cb.userdata = client;
ssh_callbacks_init(&ssh_server_cb);
ssh_set_server_callbacks(client->session, &ssh_server_cb);
ssh_options_set(session, SSH_OPTIONS_TIMEOUT, &grace_period);
ssh_options_set(session, SSH_OPTIONS_COMPRESSION, "yes");
ssh_set_auth_methods(client->session, SSH_AUTH_METHOD_PUBLICKEY);
tmate_info("Exchanging DH keys");
if (ssh_handle_key_exchange(session) < 0)
tmate_fatal("Error doing the key exchange: %s",
ssh_get_error(session));
mainloop = ssh_event_new();
ssh_event_add_session(mainloop, session);
while (!client->role) {
if (ssh_event_dopoll(mainloop, -1) == SSH_ERROR)
tmate_fatal("Error polling ssh socket: %s", ssh_get_error(session));
}
alarm(0);
/* The latency is callback set later */
tmate_start_ssh_latency_probes(client, &ssh_server_cb, TMATE_SSH_KEEPALIVE * 1000);
register_on_ssh_read(client);
tmate_spawn(_session);
/* never reached */
}
int main(int argc, char **argv){
ssh_session session;
ssh_bind sshbind;
ssh_event mainloop;
struct ssh_server_callbacks_struct cb = {
.userdata = NULL,
.auth_password_function = auth_password,
.auth_gssapi_mic_function = auth_gssapi_mic,
.channel_open_request_session_function = new_session_channel
};
char buf[2048];
int sftp=0;
int i;
int r;
sshbind=ssh_bind_new();
session=ssh_new();
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_DSAKEY, KEYS_FOLDER "ssh_host_dsa_key");
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_RSAKEY, KEYS_FOLDER "ssh_host_rsa_key");
#ifdef HAVE_ARGP_H
/*
* Parse our arguments; every option seen by parse_opt will
* be reflected in arguments.
*/
argp_parse (&argp, argc, argv, 0, 0, sshbind);
#else
(void) argc;
(void) argv;
#endif
if(ssh_bind_listen(sshbind)<0){
printf("Error listening to socket: %s\n",ssh_get_error(sshbind));
return 1;
}
r=ssh_bind_accept(sshbind,session);
if(r==SSH_ERROR){
printf("error accepting a connection : %s\n",ssh_get_error(sshbind));
return 1;
}
ssh_callbacks_init(&cb);
ssh_set_server_callbacks(session, &cb);
if (ssh_handle_key_exchange(session)) {
printf("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
return 1;
}
ssh_set_auth_methods(session,SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_GSSAPI_MIC);
mainloop = ssh_event_new();
ssh_event_add_session(mainloop, session);
while (!(authenticated && chan != NULL)){
if(error)
break;
r = ssh_event_dopoll(mainloop, -1);
if (r == SSH_ERROR){
printf("Error : %s\n",ssh_get_error(session));
ssh_disconnect(session);
return 1;
}
}
if(error){
printf("Error, exiting loop\n");
} else
printf("Authenticated and got a channel\n");
do{
i=ssh_channel_read(chan,buf, 2048, 0);
if(i>0) {
ssh_channel_write(chan, buf, i);
if (write(1,buf,i) < 0) {
printf("error writing to buffer\n");
return 1;
}
if (buf[0] == '\x0d') {
if (write(1, "\n", 1) < 0) {
printf("error writing to buffer\n");
return 1;
}
ssh_channel_write(chan, "\n", 1);
}
}
} while (i>0);
ssh_disconnect(session);
ssh_bind_free(sshbind);
ssh_finalize();
return 0;
}
int main(int argc, char **argv){
ssh_session session;
ssh_bind sshbind;
struct ssh_server_callbacks_struct cb = {
.userdata = NULL,
.auth_password_function = auth_password,
.auth_gssapi_mic_function = auth_gssapi_mic,
.channel_open_request_session_function = new_session_channel,
.service_request_function = service_request
};
struct ssh_callbacks_struct cb_gen = {
.userdata = NULL,
.global_request_function = global_request
};
int ret = 1;
sshbind = ssh_bind_new();
session = ssh_new();
mainloop = ssh_event_new();
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_DSAKEY, KEYS_FOLDER "ssh_host_dsa_key");
ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_RSAKEY, KEYS_FOLDER "ssh_host_rsa_key");
#ifdef HAVE_ARGP_H
/*
* Parse our arguments; every option seen by parse_opt will
* be reflected in arguments.
*/
argp_parse (&argp, argc, argv, 0, 0, sshbind);
#else
(void)argc;
(void)argv;
#endif
if (ssh_bind_listen(sshbind) < 0) {
printf("Error listening to socket: %s\n", ssh_get_error(sshbind));
return 1;
}
if (ssh_bind_accept(sshbind, session) == SSH_ERROR) {
printf("error accepting a connection : %s\n", ssh_get_error(sshbind));
ret = 1;
goto shutdown;
}
ssh_callbacks_init(&cb);
ssh_callbacks_init(&cb_gen);
ssh_set_server_callbacks(session, &cb);
ssh_set_callbacks(session, &cb_gen);
ssh_set_message_callback(session, message_callback, (void *)NULL);
if (ssh_handle_key_exchange(session)) {
printf("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
ret = 1;
goto shutdown;
}
ssh_set_auth_methods(session, SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_GSSAPI_MIC);
ssh_event_add_session(mainloop, session);
while (!authenticated) {
if (error_set) {
break;
}
if (ssh_event_dopoll(mainloop, -1) == SSH_ERROR) {
printf("Error : %s\n", ssh_get_error(session));
ret = 1;
goto shutdown;
}
}
if (error_set) {
printf("Error, exiting loop\n");
} else {
printf("Authenticated and got a channel\n");
while (!error_set) {
if (ssh_event_dopoll(mainloop, 100) == SSH_ERROR) {
printf("Error : %s\n", ssh_get_error(session));
ret = 1;
goto shutdown;
}
do_cleanup(&cleanup_stack);
}
}
shutdown:
ssh_disconnect(session);
ssh_bind_free(sshbind);
ssh_finalize();
return ret;
}
