int main(int argc, char **argv)
{
ssh_session_t *session = NULL;
session = ssh_new();
ssh_callbacks_init(&cb);
ssh_set_callbacks(session,&cb);
if(ssh_options_getopt(session, &argc, argv))
{
fprintf(stderr, "error parsing command line :%s\n",
ssh_get_error(session));
usage();
}
opts(argc,argv);
signal(SIGTERM, do_exit);
client(session);
ssh_disconnect(session);
ssh_free(session);
ssh_finalize();
return 0;
}
gboolean
remmina_ssh_init_session (RemminaSSH *ssh)
{
gint verbosity;
ssh->callback = g_new0 (struct ssh_callbacks_struct, 1);
ssh->callback->userdata = ssh;
/* Init & startup the SSH session */
ssh->session = ssh_new ();
ssh_options_set (ssh->session, SSH_OPTIONS_HOST, ssh->server);
ssh_options_set (ssh->session, SSH_OPTIONS_PORT, &ssh->port);
ssh_options_set (ssh->session, SSH_OPTIONS_USER, ssh->user);
if (remmina_log_running ())
{
verbosity = SSH_LOG_RARE;
ssh_options_set (ssh->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
ssh->callback->log_function = remmina_ssh_log_callback;
}
ssh_callbacks_init (ssh->callback);
ssh_set_callbacks(ssh->session, ssh->callback);
if (ssh_connect (ssh->session))
{
remmina_ssh_set_error (ssh, _("Failed to startup SSH session: %s"));
return FALSE;
}
/* Try the "none" authentication */
if (ssh_userauth_none (ssh->session, NULL) == SSH_AUTH_SUCCESS)
{
ssh->authenticated = TRUE;
}
return TRUE;
}
int process_ssh_target(char * pcAddress, char * pcLogin, char * pcPasswd,char * pcDatafile)
{
ssh_session session;
if ( ( NULL == pcAddress) || ( NULL == pcLogin) || ( NULL == pcPasswd) || ( NULL == pcDatafile) )
{
printf("ERROR: Incorrect data; somewhere empty string.\n");//TODO
return -8;//TODO
}
session = ssh_new();
ssh_callbacks_init(&cb);
ssh_set_callbacks(session,&cb);
user_host_file(pcLogin, pcAddress, pcDatafile);
signal(SIGTERM, do_exit);
/* Create input pipe between two endpoints */
pipe(input_pipe);
#if defined(OUT_PIPE)
/* Create output pipe between two endpoints */
pipe(output_pipe);
#endif /* OUT_PIPE */
/* Launch Successor to push commands into tray */
iInput_Start("none", 25);
#if defined(OUT_PIPE)
// iOutput_Start("", 25);
#endif /* OUT_PIPE */
client_ssh(session, pcPasswd);
ssh_disconnect(session);
ssh_free(session);
ssh_finalize();
/* allocated in <assign_host_file> */
free (user);
/* allocated in <assign_host_file> */
free (host);
/* Free memory occupied by dynamically stored raw data */
DeleteCmds(&pCmdChain);
return 0;
}
int process_target(int argc, char **argv)
{
ssh_session session;
printf("process [%d] 0:%s 1:%s 2:%s 3:%s \n", argc, argv[0], argv[1], argv[2], argv[3] );
return 0;//+++
session = ssh_new();
ssh_callbacks_init(&cb);
ssh_set_callbacks(session,&cb);
if(ssh_options_getopt(session, &argc, argv))
{
fprintf(stderr, "error parsing command line :%s\n", ssh_get_error(session) );
usage();
}
opts(argc,argv);
signal(SIGTERM, do_exit);
/* Create input pipe between two endpoints */
pipe(input_pipe);
#if defined(OUT_PIPE)
/* Create output pipe between two endpoints */
pipe(output_pipe);
#endif /* OUT_PIPE */
/* Launch Successor to push commands into tray */
iInput_Start("none", 25);
#if defined(OUT_PIPE)
// iOutput_Start("", 25);
#endif /* OUT_PIPE */
client(session);
ssh_disconnect(session);
ssh_free(session);
ssh_finalize();
/* Free memory occupied by dynamically stored raw data */
DeleteCmds(&pCmdChain);
return 0;
}
static int _sftp_connect(const char *uri) {
char *scheme = NULL;
char *user = NULL;
char *passwd = NULL;
char *host = NULL;
unsigned int port = 0;
char *path = NULL;
unsigned char *hash = NULL;
int hlen;
int rc = -1;
int state = SSH_SERVER_ERROR;
int timeout = 10;
int method;
char *verbosity;
if (_connected) {
return 0;
}
rc = c_parse_uri(uri, &scheme, &user, &passwd, &host, &port, &path);
if (rc < 0) {
goto out;
}
DEBUG_SFTP(("csync_sftp - conntecting to: %s\n", host));
/* create the session */
_ssh_session = ssh_new();
if (_ssh_session == NULL) {
fprintf(stderr, "csync_sftp - error creating new connection: %s\n",
strerror(errno));
rc = -1;
goto out;
}
rc = ssh_options_set(_ssh_session, SSH_OPTIONS_TIMEOUT, &timeout);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
rc = ssh_options_set(_ssh_session, SSH_OPTIONS_COMPRESSION_C_S, "none");
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
rc = ssh_options_set(_ssh_session, SSH_OPTIONS_COMPRESSION_S_C, "none");
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
ssh_options_set(_ssh_session, SSH_OPTIONS_HOST, host);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
if (port) {
ssh_options_set(_ssh_session, SSH_OPTIONS_PORT, &port);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
DEBUG_SFTP(("csync_sftp - port set to: %d\n", port));
}
if (user && *user) {
ssh_options_set(_ssh_session, SSH_OPTIONS_USER, user);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error setting options: %s\n",
strerror(errno));
goto out;
}
DEBUG_SFTP(("csync_sftp - username set to: %s\n", user));
}
verbosity = getenv("CSYNC_SFTP_LOG_VERBOSITY");
if (verbosity) {
rc = ssh_options_set(_ssh_session, SSH_OPTIONS_LOG_VERBOSITY_STR, verbosity);
if (rc < 0) {
goto out;
}
}
/* read ~/.ssh/config */
rc = ssh_options_parse_config(_ssh_session, NULL);
if (rc < 0) {
goto out;
}
_ssh_callbacks = (ssh_callbacks) c_malloc(sizeof(struct ssh_callbacks_struct));
if (_ssh_callbacks == NULL) {
rc = -1;
goto out;
}
ZERO_STRUCTP(_ssh_callbacks);
_ssh_callbacks->userdata = _userdata;
_ssh_callbacks->auth_function = _ssh_auth_callback;
ssh_callbacks_init(_ssh_callbacks);
ssh_set_callbacks(_ssh_session, _ssh_callbacks);
rc = ssh_connect(_ssh_session);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error connecting to the server: %s\n", ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
goto out;
}
hlen = ssh_get_pubkey_hash(_ssh_session, &hash);
if (hlen < 0) {
fprintf(stderr, "csync_sftp - error connecting to the server: %s\n",
ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
goto out;
}
/* check the server public key hash */
state = ssh_is_server_known(_ssh_session);
switch (state) {
case SSH_SERVER_KNOWN_OK:
break;
case SSH_SERVER_KNOWN_CHANGED:
fprintf(stderr, "csync_sftp - The host key for this server was "
"not found, but another type of key exists.\n"
"An attacker might change the default server key to confuse your "
"client into thinking the key does not exist.\n"
"Please contact your system administrator.\n"
"%s\n", ssh_get_error(_ssh_session));
ssh_print_hexa("csync_sftp - public key hash", hash, hlen);
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
break;
case SSH_SERVER_FOUND_OTHER:
fprintf(stderr, "csync_sftp - the host key for this server was not "
"found but an other type of key exists.\n");
fprintf(stderr, "csync_sftp - an attacker might change the default "
"server key to confuse your client into thinking the key does not "
"exist\n");
fprintf(stderr, "The host key for the server %s has changed.\n"
"This could either mean that DNS SPOOFING is happening or the IP "
"address for the host and its host key have changed at the same time.\n"
"The fingerprint for the key sent by the remote host is:\n", host);
ssh_print_hexa("", hash, hlen);
fprintf(stderr, "Please contact your system administrator.\n"
"%s\n", ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
break;
case SSH_SERVER_NOT_KNOWN:
if (_authcb) {
char *hexa;
char *prompt;
char buf[4] = {0};
hexa = ssh_get_hexa(hash, hlen);
if (hexa == NULL) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
if (asprintf(&prompt,
"The authenticity of host '%s' can't be established.\n"
"RSA key fingerprint is %s.\n"
"Are you sure you want to continue connecting (yes/no)?",
host, hexa) < 0 ) {
free(hexa);
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
free(hexa);
if ((*_authcb)(prompt, buf, sizeof(buf), 1, 0, _userdata) < 0) {
free(prompt);
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
free(prompt);
if (strncasecmp(buf, "yes", 3) != 0) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
if (ssh_write_knownhost(_ssh_session) < 0) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
} else {
fprintf(stderr,"csync_sftp - the server is unknown. Connect manually to "
"the host to retrieve the public key hash, then try again.\n");
}
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
break;
case SSH_SERVER_ERROR:
fprintf(stderr, "%s\n", ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
break;
default:
break;
}
/* Try to authenticate */
rc = ssh_userauth_none(_ssh_session, NULL);
if (rc == SSH_AUTH_ERROR) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
#if 0
/* authenticate with the server */
if (passwd && *passwd) {
DEBUG_SFTP(("csync_sftp - authenticating with user/password\n"));
/*
* This is tunneled cleartext password authentication and possibly needs
* to be allowed by the ssh server. Set 'PasswordAuthentication yes'
*/
auth = ssh_userauth_password(_ssh_session, user, passwd);
} else {
DEBUG_SFTP(("csync_sftp - authenticating with pubkey\n"));
auth = ssh_userauth_autopubkey(_ssh_session, NULL);
}
if (auth == SSH_AUTH_ERROR) {
fprintf(stderr, "csync_sftp - authenticating with pubkey: %s\n",
ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
if (auth != SSH_AUTH_SUCCESS) {
if (_authcb != NULL) {
auth = auth_kbdint(_ssh_session);
if (auth == SSH_AUTH_ERROR) {
fprintf(stderr,"csync_sftp - authentication failed: %s\n",
ssh_get_error(_ssh_session));
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
} else {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
}
}
#endif
method = ssh_auth_list(_ssh_session);
while (rc != SSH_AUTH_SUCCESS) {
/* Try to authenticate with public key first */
if (method & SSH_AUTH_METHOD_PUBLICKEY) {
rc = ssh_userauth_autopubkey(_ssh_session, NULL);
if (rc == SSH_AUTH_ERROR) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
} else if (rc == SSH_AUTH_SUCCESS) {
break;
}
}
/* Try to authenticate with keyboard interactive */
if (method & SSH_AUTH_METHOD_INTERACTIVE) {
rc = auth_kbdint(_ssh_session, user, passwd);
if (rc == SSH_AUTH_ERROR) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
} else if (rc == SSH_AUTH_SUCCESS) {
break;
}
}
/* Try to authenticate with password */
if ((method & SSH_AUTH_METHOD_PASSWORD) && passwd && *passwd) {
rc = ssh_userauth_password(_ssh_session, user, passwd);
if (rc == SSH_AUTH_ERROR) {
ssh_disconnect(_ssh_session);
_ssh_session = NULL;
ssh_finalize();
rc = -1;
goto out;
} else if (rc == SSH_AUTH_SUCCESS) {
break;
}
}
}
DEBUG_SFTP(("csync_sftp - creating sftp channel...\n"));
/* start the sftp session */
_sftp_session = sftp_new(_ssh_session);
if (_sftp_session == NULL) {
fprintf(stderr, "csync_sftp - sftp error initialising channel: %s\n", ssh_get_error(_ssh_session));
rc = -1;
goto out;
}
rc = sftp_init(_sftp_session);
if (rc < 0) {
fprintf(stderr, "csync_sftp - error initialising sftp: %s\n", ssh_get_error(_ssh_session));
goto out;
}
DEBUG_SFTP(("csync_sftp - connection established...\n"));
_connected = 1;
rc = 0;
out:
SAFE_FREE(scheme);
SAFE_FREE(user);
SAFE_FREE(passwd);
SAFE_FREE(host);
SAFE_FREE(path);
SAFE_FREE(hash);
return rc;
}
int set_callbacks(ssh_session session, ssh_callbacks callbacks) {
ssh_callbacks_init(callbacks);
return ssh_set_callbacks(session, callbacks);
}
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;
}