/**
* @brief Request a subsystem (for example "sftp").
*
* @param channel The channel to send the request.
*
* @param system The subsystem to request (for example "sftp").
*
* @return SSH_SUCCESS on success, SSH_ERROR on error.
*
* @warning You normally don't have to call it for sftp, see sftp_new().
*/
int channel_request_subsystem(CHANNEL *channel, const char *sys) {
BUFFER *buffer = NULL;
STRING *subsystem = NULL;
int rc = SSH_ERROR;
buffer = buffer_new();
if (buffer == NULL) {
goto error;
}
subsystem = string_from_char(sys);
if (subsystem == NULL) {
goto error;
}
if (buffer_add_ssh_string(buffer, subsystem) < 0) {
goto error;
}
rc = channel_request(channel, "subsystem", buffer, 1);
error:
buffer_free(buffer);
string_free(subsystem);
return rc;
}
/**
* @brief Run a shell command without an interactive shell.
*
* This is similar to 'sh -c command'.
*
* @param channel The channel to execute the command.
*
* @param cmd The command to execute
* (e.g. "ls ~/ -al | grep -i reports").
*
* @return SSH_SUCCESS on success, SSH_ERROR on error.
*
* @see channel_request_shell()
*/
int channel_request_exec(CHANNEL *channel, const char *cmd) {
BUFFER *buffer = NULL;
STRING *command = NULL;
int rc = SSH_ERROR;
#ifdef HAVE_SSH1
if (channel->version == 1) {
return channel_request_exec1(channel, cmd);
}
#endif
buffer = buffer_new();
if (buffer == NULL) {
goto error;
}
command = string_from_char(cmd);
if (command == NULL) {
goto error;
}
if (buffer_add_ssh_string(buffer, command) < 0) {
goto error;
}
rc = channel_request(channel, "exec", buffer, 1);
error:
buffer_free(buffer);
string_free(command);
return rc;
}
/**
* @brief Change the size of the terminal associated to a channel.
*
* @param channel The channel to change the size.
*
* @param cols The new number of columns.
*
* @param rows The new number of rows.
*
* @warning Do not call it from a signal handler if you are not
* sure any other libssh function using the same channel/session
* is running at same time (not 100% threadsafe).
*/
int channel_change_pty_size(CHANNEL *channel, int cols, int rows) {
SSH_SESSION *session = channel->session;
BUFFER *buffer = NULL;
int rc = SSH_ERROR;
enter_function();
#ifdef HAVE_SSH1
if (channel->version == 1) {
rc = channel_change_pty_size1(channel,cols,rows);
leave_function();
return rc;
}
#endif
buffer = buffer_new();
if (buffer == NULL) {
goto error;
}
if (buffer_add_u32(buffer, htonl(cols)) < 0 ||
buffer_add_u32(buffer, htonl(rows)) < 0 ||
buffer_add_u32(buffer, 0) < 0 ||
buffer_add_u32(buffer, 0) < 0) {
goto error;
}
rc = channel_request(channel, "window-change", buffer, 0);
error:
buffer_free(buffer);
leave_function();
return rc;
}
/**
* @brief Request a shell.
*
* @param channel The channel to send the request.
*
* @returns SSH_SUCCESS on success, SSH_ERROR on error.
*/
int channel_request_shell(CHANNEL *channel) {
#ifdef HAVE_SSH1
if (channel->version == 1) {
return channel_request_shell1(channel);
}
#endif
return channel_request(channel, "shell", NULL, 1);
}
/**
* @brief Request a pty with a specific type and size.
*
* @param channel The channel to sent the request.
*
* @param terminal The terminal type ("vt100, xterm,...").
*
* @param col The number of columns.
*
* @param row The number of rows.
*
* @return SSH_SUCCESS on success, SSH_ERROR on error.
*/
int channel_request_pty_size(CHANNEL *channel, const char *terminal,
int col, int row) {
SSH_SESSION *session = channel->session;
STRING *term = NULL;
BUFFER *buffer = NULL;
int rc = SSH_ERROR;
enter_function();
#ifdef HAVE_SSH1
if (channel->version==1) {
channel_request_pty_size1(channel,terminal, col, row);
leave_function();
return rc;
}
#endif
buffer = buffer_new();
if (buffer == NULL) {
goto error;
}
term = string_from_char(terminal);
if (term == NULL) {
goto error;
}
if (buffer_add_ssh_string(buffer, term) < 0 ||
buffer_add_u32(buffer, htonl(col)) < 0 ||
buffer_add_u32(buffer, htonl(row)) < 0 ||
buffer_add_u32(buffer, 0) < 0 ||
buffer_add_u32(buffer, 0) < 0 ||
buffer_add_u32(buffer, htonl(1)) < 0 || /* Add a 0byte string */
buffer_add_u8(buffer, 0) < 0) {
goto error;
}
rc = channel_request(channel, "pty-req", buffer, 1);
error:
buffer_free(buffer);
string_free(term);
leave_function();
return rc;
}
/**
* @brief Set environement variables.
*
* @param channel The channel to set the environement variables.
*
* @param name The name of the variable.
*
* @param value The value to set.
*
* @return SSH_SUCCESS on success, SSH_ERROR on error.
*
* @warning Some environement variables may be refused by security reasons.
* */
int channel_request_env(CHANNEL *channel, const char *name, const char *value) {
BUFFER *buffer = NULL;
STRING *str = NULL;
int rc = SSH_ERROR;
buffer = buffer_new();
if (buffer == NULL) {
goto error;
}
str = string_from_char(name);
if (str == NULL) {
goto error;
}
if (buffer_add_ssh_string(buffer, str) < 0) {
goto error;
}
string_free(str);
str = string_from_char(value);
if (str == NULL) {
goto error;
}
if (buffer_add_ssh_string(buffer, str) < 0) {
goto error;
}
rc = channel_request(channel, "env", buffer,1);
error:
buffer_free(buffer);
string_free(str);
return rc;
}
BOOL ap_table_parse_process(void)
{
switch(g_priv.status)
{
case INIT_IDLE: //idle
break;
case INIT_NIT_REQUEST_TABLE:
nit_request_start();
if(g_priv.channel_parse->channel_bit !=0)
{
channel_request();
}
g_priv.status = INIT_WAIT_TABLE;
break;
case INIT_REQUEST_TABLE:// request
channel_request();
g_priv.status = INIT_WAIT_TABLE;
break;
case INIT_WAIT_TABLE: //running
break;
case INIT_DONE_CHANNEL_PARSE: //done
//release resource
{
u8 vid = 0;
u32 channel_version = 0;
#ifdef CHANNEL_FOLLOWING_TABLE
channel_version = (u32)sys_status_get_channel_version();
#endif
if(g_priv.version != channel_version)
{
if(g_priv.channel_parse->p_channel_process != NULL)
{
g_priv.channel_parse->p_channel_process();
}
}
vid = db_dvbs_create_view(DB_DVBS_ALL_PG, 0, NULL);
if((g_priv.table_found_bit == TRUE) && (db_dvbs_get_count(vid) > 0))
{
startup_nit_channel_status = TRUE;
}
if((g_priv.nit_finish ==1) && (g_priv.channel_finish ==1))
{
g_priv.status = INIT_FINISH;
}
else
{
g_priv.status = INIT_WAIT_TABLE;
}
}
break;
case INIT_FINISH:
{
dvb_t *p_dvb = class_get_handle_by_id(DVB_CLASS_ID);
p_dvb->remove_svc_instance(p_dvb, g_priv.p_dvb_svc);
nc_remove_svc_instance(class_get_handle_by_id(NC_CLASS_ID), g_priv.p_nc_svc);
}
return TRUE;
break;
default:
break;
}
return FALSE;
}
