static int ssh_open_remote_connection(const char* hostname, const unsigned int port, const char* username, const char* password,
const char* sshkey, const char* sshkey_passphrase, const char* iface, const char* cfilter, const char* capture_bin,
const unsigned long int count, const char* fifo)
{
ssh_session sshs = NULL;
ssh_channel channel = NULL;
int fd = STDOUT_FILENO;
int ret = EXIT_FAILURE;
char* err_info = NULL;
if (g_strcmp0(fifo, "-")) {
/* Open or create the output file */
fd = ws_open(fifo, O_WRONLY, 0640);
if (fd == -1) {
fd = ws_open(fifo, O_WRONLY | O_CREAT, 0640);
if (fd == -1) {
errmsg_print("Error creating output file: %s", g_strerror(errno));
return EXIT_FAILURE;
}
}
}
sshs = create_ssh_connection(hostname, port, username, password, sshkey, sshkey_passphrase, &err_info);
if (!sshs) {
errmsg_print("Error creating connection: %s", err_info);
goto cleanup;
}
channel = run_ssh_command(sshs, capture_bin, iface, cfilter, count);
if (!channel)
goto cleanup;
/* read from channel and write into fd */
ssh_loop_read(channel, fd);
ret = EXIT_SUCCESS;
cleanup:
if (err_info)
errmsg_print("%s", err_info);
g_free(err_info);
/* clean up and exit */
ssh_cleanup(&sshs, &channel);
if (g_strcmp0(fifo, "-"))
ws_close(fd);
return ret;
}
static void ciscodump_cleanup(ssh_session sshs, ssh_channel channel, const char* iface, const char* cfilter)
{
if (channel) {
if (read_output_bytes(channel, -1, NULL) == EXIT_SUCCESS) {
ssh_channel_printf(channel, "monitor capture point stop %s\n", WIRESHARK_CAPTURE_POINT);
ssh_channel_printf(channel, "no monitor capture point ip cef %s %s\n", WIRESHARK_CAPTURE_POINT, iface);
ssh_channel_printf(channel, "no monitor capture buffer %s\n", WIRESHARK_CAPTURE_BUFFER);
if (cfilter) {
ssh_channel_printf(channel, "configure terminal\n");
ssh_channel_printf(channel, "no ip access-list ex %s\n", WIRESHARK_CAPTURE_ACCESSLIST);
}
read_output_bytes(channel, -1, NULL);
}
}
ssh_cleanup(&sshs, &channel);
}
/** \brief disconnect from a session (client or server)
* \param session ssh session
*/
void ssh_disconnect(SSH_SESSION *session){
STRING *str;
if(session->fd!= -1) {
packet_clear_out(session);
buffer_add_u8(session->out_buffer,SSH2_MSG_DISCONNECT);
buffer_add_u32(session->out_buffer,htonl(SSH2_DISCONNECT_BY_APPLICATION));
str=string_from_char("Bye Bye");
buffer_add_ssh_string(session->out_buffer,str);
free(str);
packet_send(session);
close(session->fd);
session->fd=-1;
}
session->alive=0;
ssh_cleanup(session);
}
static int ssh_open_remote_connection(const char* hostname, const unsigned int port, const char* username, const char* password,
const char* sshkey, const char* sshkey_passphrase, const char* iface, const char* cfilter, const char* capture_bin,
const unsigned long int count, const char* fifo)
{
ssh_session sshs;
ssh_channel channel;
int fd;
if (!g_strcmp0(fifo, "-")) {
/* use stdout */
fd = STDOUT_FILENO;
} else {
/* Open or create the output file */
fd = open(fifo, O_WRONLY);
if (fd == -1) {
fd = open(fifo, O_WRONLY | O_CREAT, 0640);
if (fd == -1) {
errmsg_print("Error creating output file: %s\n", g_strerror(errno));
return EXIT_FAILURE;
}
}
}
sshs = create_ssh_connection(hostname, port, username, password, sshkey, sshkey_passphrase);
if (!sshs)
return EXIT_FAILURE;
channel = run_ssh_command(sshs, capture_bin, iface, cfilter, count);
if (!channel)
return EXIT_FAILURE;
/* read from channel and write into fd */
ssh_loop_read(channel, fd);
/* clean up and exit */
ssh_cleanup(sshs, channel);
return EXIT_SUCCESS;
}
SSH_SESSION *ssh_bind_accept(SSH_BIND *ssh_bind) {
SSH_SESSION *session;
PRIVATE_KEY *dsa = NULL;
PRIVATE_KEY *rsa = NULL;
int fd = -1;
if (ssh_bind->bindfd < 0) {
ssh_set_error(ssh_bind, SSH_FATAL,
"Can't accept new clients on a not bound socket.");
return NULL;
}
if (ssh_bind->options->dsakey == NULL || ssh_bind->options->rsakey == NULL) {
ssh_set_error(ssh_bind, SSH_FATAL,
"DSA or RSA host key file must be set before accept()");
return NULL;
}
if (ssh_bind->options->dsakey) {
dsa = _privatekey_from_file(ssh_bind, ssh_bind->options->dsakey, TYPE_DSS);
if (dsa == NULL) {
return NULL;
}
}
if (ssh_bind->options->rsakey) {
rsa = _privatekey_from_file(ssh_bind, ssh_bind->options->rsakey, TYPE_RSA);
if (rsa == NULL) {
privatekey_free(dsa);
return NULL;
}
}
fd = accept(ssh_bind->bindfd, NULL, NULL);
if (fd < 0) {
ssh_set_error(ssh_bind, SSH_FATAL,
"Accepting a new connection: %s",
strerror(errno));
privatekey_free(dsa);
privatekey_free(rsa);
return NULL;
}
session = ssh_new();
if (session == NULL) {
ssh_set_error(ssh_bind, SSH_FATAL, "Not enough space");
privatekey_free(dsa);
privatekey_free(rsa);
return NULL;
}
session->server = 1;
session->version = 2;
session->options = ssh_options_copy(ssh_bind->options);
if (session->options == NULL) {
ssh_set_error(ssh_bind, SSH_FATAL, "No space left");
privatekey_free(dsa);
privatekey_free(rsa);
ssh_cleanup(session);
return NULL;
}
ssh_socket_free(session->socket);
session->socket = ssh_socket_new(session);
if (session->socket == NULL) {
privatekey_free(dsa);
privatekey_free(rsa);
ssh_cleanup(session);
return NULL;
}
ssh_socket_set_fd(session->socket,fd);
session->dsa_key = dsa;
session->rsa_key = rsa;
return session;
}