int ssh_execute_message_callbacks(ssh_session session){
ssh_message msg=NULL;
int ret;
ssh_handle_packets(session, SSH_TIMEOUT_NONBLOCKING);
if(!session->ssh_message_list)
return SSH_OK;
if(session->ssh_message_callback){
while((msg=ssh_message_pop_head(session)) != NULL) {
ret=session->ssh_message_callback(session,msg,
session->ssh_message_callback_data);
if(ret==1){
ret = ssh_message_reply_default(msg);
ssh_message_free(msg);
if(ret != SSH_OK)
return ret;
} else {
ssh_message_free(msg);
}
}
} else {
while((msg=ssh_message_pop_head(session)) != NULL) {
ret = ssh_message_reply_default(msg);
ssh_message_free(msg);
if(ret != SSH_OK)
return ret;
}
}
return SSH_OK;
}
void server_handle_message(ssh_session s, ssh_message m, int type, int subtype, int *state)
{
int handled = 0;
if((*state == SERVER_CONNECTED) && (type == SSH_REQUEST_AUTH) && (subtype == SSH_AUTH_METHOD_PUBLICKEY))
{
ssh_public_key key = ssh_message_auth_publickey(m);
ssh_string keystr = publickey_to_string(key);
char *keyhash = pubkey_hash(keystr);
int has_sig = ssh_message_auth_publickey_state(m);
if(has_sig == SSH_PUBLICKEY_STATE_NONE)
{
if(authenticate(keyhash, 1))
{
//FIXME: type detection
ssh_string algostr = ssh_string_from_char("ssh-rsa");
ssh_message_auth_reply_pk_ok(m, algostr, keystr);
handled = 1;
ssh_string_free(algostr);
}
}
else if(has_sig == SSH_PUBLICKEY_STATE_VALID)
{
if(authenticate(keyhash, 0))
{
session_event(s, "authenticated", keyhash);
ssh_message_auth_reply_success(m, 0);
handled = 1;
*state = SERVER_AUTHENTICATED;
}
else
{
ssh_message_reply_default(m);
handled = 1;
*state = SERVER_CLOSED;
}
}
ssh_string_free(keystr);
free(keyhash);
}
else if((*state == SERVER_AUTHENTICATED) && (type == SSH_REQUEST_CHANNEL_OPEN) && (subtype == SSH_CHANNEL_SESSION))
{
ssh_channel chan = ssh_message_channel_request_open_reply_accept(m);
if(!chan)
session_error(s, "open-channel");
handled = 1;
session_event(s, "channel-opened", NULL);
channel_to_file(chan, 1);
ssh_channel_free(chan);
*state = SERVER_CLOSED;
}
if(!handled)
ssh_message_reply_default(m);
}
static int authenticate(ssh_session session) {
ssh_message message;
do {
message=ssh_message_get(session);
if(!message)
break;
switch(ssh_message_type(message)){
case SSH_REQUEST_AUTH:
switch(ssh_message_subtype(message)){
case SSH_AUTH_METHOD_PASSWORD:
printf("User %s wants to auth with pass %s\n",
ssh_message_auth_user(message),
ssh_message_auth_password(message));
if(auth_password(ssh_message_auth_user(message),
ssh_message_auth_password(message))){
ssh_message_auth_reply_success(message,0);
ssh_message_free(message);
return 1;
}
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
// not authenticated, send default message
ssh_message_reply_default(message);
break;
case SSH_AUTH_METHOD_NONE:
default:
printf("User %s wants to auth with unknown auth %d\n",
ssh_message_auth_user(message),
ssh_message_subtype(message));
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
ssh_message_reply_default(message);
break;
}
break;
default:
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
ssh_message_reply_default(message);
}
ssh_message_free(message);
} while (1);
return 0;
}
/**
* @internal
*
* @brief Add a message to the current queue of messages to be parsed and/or call
* the various callback functions.
*
* @param[in] session The SSH session to add the message.
*
* @param[in] message The message to add to the queue.
*/
void ssh_message_queue(ssh_session session, ssh_message message){
if (message != NULL) {
#ifdef WITH_SERVER
int ret;
/* probably not the best place to execute server callbacks, but still better
* than nothing.
*/
ret = ssh_execute_server_callbacks(session, message);
if (ret == SSH_OK){
ssh_message_free(message);
return;
}
#endif /* WITH_SERVER */
if(session->ssh_message_callback != NULL) {
ssh_execute_message_callback(session, message);
return;
}
if (session->server_callbacks != NULL){
/* if we have server callbacks, but nothing was executed, it means we are
* in non-synchronous mode, and we just don't care about the message we
* received. Just send a default response. Do not queue it.
*/
ssh_message_reply_default(message);
ssh_message_free(message);
return;
}
if(session->ssh_message_list == NULL) {
session->ssh_message_list = ssh_list_new();
}
if (session->ssh_message_list != NULL) {
ssh_list_append(session->ssh_message_list, message);
}
}
}
static int ssh_execute_client_request(ssh_session session, ssh_message msg)
{
ssh_channel channel = NULL;
int rc = SSH_AGAIN;
if (msg->type == SSH_REQUEST_CHANNEL_OPEN
&& msg->channel_request_open.type == SSH_CHANNEL_X11
&& ssh_callbacks_exists(session->common.callbacks, channel_open_request_x11_function)) {
channel = session->common.callbacks->channel_open_request_x11_function (session,
msg->channel_request_open.originator,
msg->channel_request_open.originator_port,
session->common.callbacks->userdata);
if (channel != NULL) {
rc = ssh_message_channel_request_open_reply_accept_channel(msg, channel);
return rc;
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
}
return rc;
}
/* Logs password auth attempts. Always replies with SSH_MESSAGE_USERAUTH_FAILURE. */
int handle_auth(ssh_session session) {
struct connection con;
con.session = session;
/* Perform key exchange. */
if (ssh_handle_key_exchange(con.session)) {
fprintf(stderr, "Error exchanging keys: `%s'.\n", ssh_get_error(con.session));
return -1;
}
if (DEBUG) { printf("Successful key exchange.\n"); }
/* Wait for a message, which should be an authentication attempt. Send the default
* reply if it isn't. Log the attempt and quit. */
while (1) {
if ((con.message = ssh_message_get(con.session)) == NULL) {
break;
}
/* Log the authentication request and disconnect. */
if (ssh_message_subtype(con.message) == SSH_AUTH_METHOD_PASSWORD) {
log_attempt(&con);
}
else {
if (DEBUG) { fprintf(stderr, "Not a password authentication attempt.\n"); }
}
/* Send the default message regardless of the request type. */
ssh_message_reply_default(con.message);
ssh_message_free(con.message);
}
if (DEBUG) { printf("Exiting child.\n"); }
return 0;
}
CHANNEL *recv_channel(SSH_SESSION *session){
CHANNEL *chan=NULL;
SSH_MESSAGE *message;
int sftp=0;
do {
message=ssh_message_get(session);
if(message){
switch(ssh_message_type(message)){
case SSH_CHANNEL_REQUEST_OPEN:
if(ssh_message_subtype(message)==SSH_CHANNEL_SESSION){
chan=ssh_message_channel_request_open_reply_accept(message);
break;
}
default:
ssh_message_reply_default(message);
}
ssh_message_free(message);
}
} while(message && !chan);
if(!chan)
return NULL;
do {
message=ssh_message_get(session);
if(message && ssh_message_type(message)==SSH_CHANNEL_REQUEST &&
ssh_message_subtype(message)==SSH_CHANNEL_REQUEST_SUBSYSTEM){
if(!strcmp(ssh_message_channel_request_subsystem(message),"sftp")){
sftp=1;
ssh_message_channel_request_reply_success(message);
break;
}
}
if(!sftp){
ssh_message_reply_default(message);
}
ssh_message_free(message);
} while (message && !sftp);
if(!message)
return NULL;
return chan;
}
static int ssh_execute_message_callback(ssh_session session, ssh_message msg) {
int ret;
if(session->ssh_message_callback != NULL) {
ret = session->ssh_message_callback(session, msg,
session->ssh_message_callback_data);
if(ret == 1) {
ret = ssh_message_reply_default(msg);
ssh_message_free(msg);
if(ret != SSH_OK) {
return ret;
}
} else {
ssh_message_free(msg);
}
} else {
ret = ssh_message_reply_default(msg);
ssh_message_free(msg);
if(ret != SSH_OK) {
return ret;
}
}
return SSH_OK;
}
int main(int argc, char **argv){
ssh_session session;
ssh_bind sshbind;
ssh_message message;
ssh_channel chan=0;
char buf[2048];
int auth=0;
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
#ifdef WITH_PCAP
set_pcap(session);
#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;
}
if (ssh_handle_key_exchange(session)) {
printf("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
return 1;
}
do {
message=ssh_message_get(session);
if(!message)
break;
switch(ssh_message_type(message)){
case SSH_REQUEST_AUTH:
switch(ssh_message_subtype(message)){
case SSH_AUTH_METHOD_PASSWORD:
printf("User %s wants to auth with pass %s\n",
ssh_message_auth_user(message),
ssh_message_auth_password(message));
if(auth_password(ssh_message_auth_user(message),
ssh_message_auth_password(message))){
auth=1;
ssh_message_auth_reply_success(message,0);
break;
}
// not authenticated, send default message
case SSH_AUTH_METHOD_NONE:
default:
ssh_message_auth_set_methods(message,SSH_AUTH_METHOD_PASSWORD);
ssh_message_reply_default(message);
break;
}
break;
default:
ssh_message_reply_default(message);
}
ssh_message_free(message);
} while (!auth);
if(!auth){
printf("auth error: %s\n",ssh_get_error(session));
ssh_disconnect(session);
return 1;
}
do {
message=ssh_message_get(session);
if(message){
switch(ssh_message_type(message)){
case SSH_REQUEST_CHANNEL_OPEN:
if(ssh_message_subtype(message)==SSH_CHANNEL_SESSION){
chan=ssh_message_channel_request_open_reply_accept(message);
break;
}
default:
ssh_message_reply_default(message);
}
ssh_message_free(message);
}
} while(message && !chan);
if(!chan){
printf("error : %s\n",ssh_get_error(session));
ssh_finalize();
return 1;
}
do {
message=ssh_message_get(session);
if(message && ssh_message_type(message)==SSH_REQUEST_CHANNEL &&
ssh_message_subtype(message)==SSH_CHANNEL_REQUEST_SHELL){
// if(!strcmp(ssh_message_channel_request_subsystem(message),"sftp")){
sftp=1;
ssh_message_channel_request_reply_success(message);
break;
// }
}
if(!sftp){
ssh_message_reply_default(message);
}
ssh_message_free(message);
} while (message && !sftp);
if(!sftp){
printf("error : %s\n",ssh_get_error(session));
return 1;
}
printf("it works !\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;
}
}
} while (i>0);
ssh_disconnect(session);
ssh_bind_free(sshbind);
#ifdef WITH_PCAP
cleanup_pcap();
#endif
ssh_finalize();
return 0;
}
int main(int argc, char **argv){
ssh_session session;
ssh_bind sshbind;
ssh_message message;
ssh_channel chan=0;
char buf[2048];
int auth=0;
int shell=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
#ifdef WITH_PCAP
set_pcap(session);
#endif
if(ssh_bind_listen(sshbind)<0){
printf("Error listening to socket: %s\n", ssh_get_error(sshbind));
return 1;
}
printf("Started sample libssh sshd on port %d\n", port);
printf("You can login as the user %s with the password %s\n", SSHD_USER,
SSHD_PASSWORD);
r = ssh_bind_accept(sshbind, session);
if(r==SSH_ERROR){
printf("Error accepting a connection: %s\n", ssh_get_error(sshbind));
return 1;
}
if (ssh_handle_key_exchange(session)) {
printf("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
return 1;
}
/* proceed to authentication */
auth = authenticate(session);
if (!auth || !authenticated) {
printf("Authentication error: %s\n", ssh_get_error(session));
ssh_disconnect(session);
return 1;
}
/* wait for a channel session */
do {
message = ssh_message_get(session);
if(message){
if(ssh_message_type(message) == SSH_REQUEST_CHANNEL_OPEN &&
ssh_message_subtype(message) == SSH_CHANNEL_SESSION) {
chan = ssh_message_channel_request_open_reply_accept(message);
ssh_message_free(message);
break;
} else {
ssh_message_reply_default(message);
ssh_message_free(message);
}
} else {
break;
}
} while(!chan);
if(!chan) {
printf("Error: cleint did not ask for a channel session (%s)\n",
ssh_get_error(session));
ssh_finalize();
return 1;
}
/* wait for a shell */
do {
message = ssh_message_get(session);
if(message != NULL) {
if(ssh_message_type(message) == SSH_REQUEST_CHANNEL &&
ssh_message_subtype(message) == SSH_CHANNEL_REQUEST_SHELL) {
shell = 1;
ssh_message_channel_request_reply_success(message);
ssh_message_free(message);
break;
}
ssh_message_reply_default(message);
ssh_message_free(message);
} else {
break;
}
} while(!shell);
if(!shell) {
printf("Error: No shell requested (%s)\n", ssh_get_error(session));
return 1;
}
printf("it works !\n");
do{
i=ssh_channel_read(chan,buf, 2048, 0);
if(i>0) {
if(*buf == '' || *buf == '')
break;
if(i == 1 && *buf == '\r')
ssh_channel_write(chan, "\r\n", 2);
else
ssh_channel_write(chan, buf, i);
if (write(1,buf,i) < 0) {
printf("error writing to buffer\n");
return 1;
}
}
} while (i>0);
ssh_channel_close(chan);
ssh_disconnect(session);
ssh_bind_free(sshbind);
#ifdef WITH_PCAP
cleanup_pcap();
#endif
ssh_finalize();
return 0;
}
static int authenticate(ssh_session session) {
ssh_message message;
name = "\n\nKeyboard-Interactive Fancy Authentication\n";
instruction = "Please enter your real name and your password";
prompts[0] = "Real name: ";
prompts[1] = "Password: "******"User %s wants to auth with pass %s\n",
ssh_message_auth_user(message),
ssh_message_auth_password(message));
if(auth_password(ssh_message_auth_user(message),
ssh_message_auth_password(message))){
ssh_message_auth_reply_success(message,0);
ssh_message_free(message);
return 1;
}
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
// not authenticated, send default message
ssh_message_reply_default(message);
break;
case SSH_AUTH_METHOD_INTERACTIVE:
if(!ssh_message_auth_kbdint_is_response(message)) {
printf("User %s wants to auth with kbdint\n",
ssh_message_auth_user(message));
ssh_message_auth_interactive_request(message, name,
instruction, 2, prompts, echo);
} else {
if(kbdint_check_response(session)) {
ssh_message_auth_reply_success(message,0);
ssh_message_free(message);
return 1;
}
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
ssh_message_reply_default(message);
}
break;
case SSH_AUTH_METHOD_NONE:
default:
printf("User %s wants to auth with unknown auth %d\n",
ssh_message_auth_user(message),
ssh_message_subtype(message));
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
ssh_message_reply_default(message);
break;
}
break;
default:
ssh_message_auth_set_methods(message,
SSH_AUTH_METHOD_PASSWORD |
SSH_AUTH_METHOD_INTERACTIVE);
ssh_message_reply_default(message);
}
ssh_message_free(message);
} while (1);
return 0;
}
// Parse an SSH command message and do something
bool
SSHServer::processSSHMessage(ssh_message message)
{
if (!message) {
return false;
}
switch(ssh_message_type(message)){
case SSH_REQUEST_AUTH:
switch(ssh_message_subtype(message)) {
// not authenticated, send default message
case SSH_AUTH_METHOD_NONE:
break;
case SSH_AUTH_METHOD_PASSWORD:
{
log_debug(_("User %s wants to auth with pass %s\n"),
ssh_message_auth_user(message),
ssh_message_auth_password(message));
string user = ssh_message_auth_user(message);
string passwd = ssh_message_auth_password(message);
if (authPassword(user, passwd)){
// auth=1;
ssh_message_auth_reply_success(message,0);
break;
}
break;
}
case SSH_AUTH_METHOD_HOSTBASED:
break;
case SSH_AUTH_METHOD_PUBLICKEY:
break;
case SSH_AUTH_METHOD_INTERACTIVE:
break;
case SSH_AUTH_METHOD_UNKNOWN:
break;
default:
ssh_message_auth_set_methods(message,SSH_AUTH_METHOD_PASSWORD);
ssh_message_reply_default(message);
break;
}
case SSH_REQUEST_CHANNEL_OPEN:
if(ssh_message_subtype(message)==SSH_CHANNEL_SESSION){
_channel = ssh_message_channel_request_open_reply_accept(message);
break;
}
break;
// case SSH_CHANNEL_REQUEST_EXEC:
// break;
case SSH_CHANNEL_REQUEST_ENV:
break;
case SSH_CHANNEL_REQUEST_SUBSYSTEM:
break;
case SSH_CHANNEL_REQUEST_WINDOW_CHANGE:
break;
case SSH_CHANNEL_REQUEST_UNKNOWN:
break;
default:
ssh_message_reply_default(message);
}
ssh_message_free(message);
return false;
}
static int ssh_execute_server_request(ssh_session session, ssh_message msg)
{
ssh_channel channel = NULL;
int rc;
switch(msg->type) {
case SSH_REQUEST_AUTH:
if (msg->auth_request.method == SSH_AUTH_METHOD_PASSWORD &&
ssh_callbacks_exists(session->server_callbacks, auth_password_function)) {
rc = session->server_callbacks->auth_password_function(session,
msg->auth_request.username, msg->auth_request.password,
session->server_callbacks->userdata);
if (rc == SSH_AUTH_SUCCESS || rc == SSH_AUTH_PARTIAL) {
ssh_message_auth_reply_success(msg, rc == SSH_AUTH_PARTIAL);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
} else if(msg->auth_request.method == SSH_AUTH_METHOD_PUBLICKEY &&
ssh_callbacks_exists(session->server_callbacks, auth_pubkey_function)) {
rc = session->server_callbacks->auth_pubkey_function(session,
msg->auth_request.username, msg->auth_request.pubkey,
msg->auth_request.signature_state,
session->server_callbacks->userdata);
if (rc == SSH_AUTH_SUCCESS || rc == SSH_AUTH_PARTIAL){
ssh_message_auth_reply_success(msg, rc == SSH_AUTH_PARTIAL);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
}
break;
case SSH_REQUEST_CHANNEL_OPEN:
if (msg->channel_request_open.type == SSH_CHANNEL_SESSION &&
ssh_callbacks_exists(session->server_callbacks, channel_open_request_session_function)) {
channel = session->server_callbacks->channel_open_request_session_function(session,
session->server_callbacks->userdata);
if (channel != NULL) {
rc = ssh_message_channel_request_open_reply_accept_channel(msg, channel);
return SSH_OK;
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
}
break;
case SSH_REQUEST_CHANNEL:
channel = msg->channel_request.channel;
if (msg->channel_request.type == SSH_CHANNEL_REQUEST_PTY &&
ssh_callbacks_exists(channel->callbacks, channel_pty_request_function)) {
rc = channel->callbacks->channel_pty_request_function(session, channel,
msg->channel_request.TERM,
msg->channel_request.width, msg->channel_request.height,
msg->channel_request.pxwidth, msg->channel_request.pxheight,
channel->callbacks->userdata);
if (rc == 0) {
ssh_message_channel_request_reply_success(msg);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_SHELL &&
ssh_callbacks_exists(channel->callbacks, channel_shell_request_function)) {
rc = channel->callbacks->channel_shell_request_function(session,
channel,
channel->callbacks->userdata);
if (rc == 0) {
ssh_message_channel_request_reply_success(msg);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_X11 &&
ssh_callbacks_exists(channel->callbacks, channel_x11_req_function)) {
channel->callbacks->channel_x11_req_function(session,
channel,
msg->channel_request.x11_single_connection,
msg->channel_request.x11_auth_protocol,
msg->channel_request.x11_auth_cookie,
msg->channel_request.x11_screen_number,
channel->callbacks->userdata);
ssh_message_channel_request_reply_success(msg);
return SSH_OK;
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_WINDOW_CHANGE &&
ssh_callbacks_exists(channel->callbacks, channel_pty_window_change_function)) {
rc = channel->callbacks->channel_pty_window_change_function(session,
channel,
msg->channel_request.height, msg->channel_request.width,
msg->channel_request.pxheight, msg->channel_request.pxwidth,
channel->callbacks->userdata);
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_EXEC &&
ssh_callbacks_exists(channel->callbacks, channel_exec_request_function)) {
rc = channel->callbacks->channel_exec_request_function(session,
channel,
msg->channel_request.command,
channel->callbacks->userdata);
if (rc == 0) {
ssh_message_channel_request_reply_success(msg);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_ENV &&
ssh_callbacks_exists(channel->callbacks, channel_env_request_function)) {
rc = channel->callbacks->channel_env_request_function(session,
channel,
msg->channel_request.var_name, msg->channel_request.var_value,
channel->callbacks->userdata);
if (rc == 0) {
ssh_message_channel_request_reply_success(msg);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
} else if (msg->channel_request.type == SSH_CHANNEL_REQUEST_SUBSYSTEM &&
ssh_callbacks_exists(channel->callbacks, channel_subsystem_request_function)) {
rc = channel->callbacks->channel_subsystem_request_function(session,
channel,
msg->channel_request.subsystem,
channel->callbacks->userdata);
if (rc == 0) {
ssh_message_channel_request_reply_success(msg);
} else {
ssh_message_reply_default(msg);
}
return SSH_OK;
}
break;
case SSH_REQUEST_SERVICE:
if (ssh_callbacks_exists(session->server_callbacks, service_request_function)) {
rc = session->server_callbacks->service_request_function(session,
msg->service_request.service, session->server_callbacks->userdata);
if (rc == 0) {
ssh_message_reply_default(msg);
} else {
ssh_disconnect(session);
}
return SSH_OK;
}
return SSH_AGAIN;
case SSH_REQUEST_GLOBAL:
break;
}
return SSH_AGAIN;
}
