telnet_history_go(connection, next_history);
}
+static void telnet_history_add(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+
+ /* save only non-blank not repeating lines in the history */
+ char *prev_line = t_con->history[(t_con->current_history > 0) ?
+ t_con->current_history - 1 : TELNET_LINE_HISTORY_SIZE-1];
+
+ if (*t_con->line && (!prev_line || strcmp(t_con->line, prev_line))) {
+ /* if the history slot is already taken, free it */
+ free(t_con->history[t_con->next_history]);
+
+ /* add line to history */
+ t_con->history[t_con->next_history] = strdup(t_con->line);
+
+ /* wrap history at TELNET_LINE_HISTORY_SIZE */
+ t_con->next_history = (t_con->next_history + 1) % TELNET_LINE_HISTORY_SIZE;
+
+ /* current history line starts at the new entry */
+ t_con->current_history = t_con->next_history;
+
+ free(t_con->history[t_con->current_history]);
+ t_con->history[t_con->current_history] = strdup("");
+ }
+}
+
static int telnet_history_print(struct connection *connection)
{
struct telnet_connection *tc;
return true;
}
+static void telnet_delete_character(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+
+ if (t_con->line_cursor == 0)
+ return;
+
+ if (t_con->line_cursor != t_con->line_size) {
+ size_t i;
+ telnet_write(connection, "\b", 1);
+ t_con->line_cursor--;
+ t_con->line_size--;
+ memmove(t_con->line + t_con->line_cursor,
+ t_con->line + t_con->line_cursor + 1,
+ t_con->line_size -
+ t_con->line_cursor);
+
+ telnet_write(connection,
+ t_con->line + t_con->line_cursor,
+ t_con->line_size -
+ t_con->line_cursor);
+ telnet_write(connection, " \b", 2);
+ for (i = t_con->line_cursor; i < t_con->line_size; i++)
+ telnet_write(connection, "\b", 1);
+ } else {
+ t_con->line_size--;
+ t_con->line_cursor--;
+ /* back space: move the 'printer' head one char
+ * back, overwrite with space, move back again */
+ telnet_write(connection, "\b \b", 3);
+ }
+}
+
+static void telnet_remove_character(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+
+ if (t_con->line_cursor < t_con->line_size) {
+ size_t i;
+ t_con->line_size--;
+ /* remove char from line buffer */
+ memmove(t_con->line + t_con->line_cursor,
+ t_con->line + t_con->line_cursor + 1,
+ t_con->line_size - t_con->line_cursor);
+
+ /* print remainder of buffer */
+ telnet_write(connection, t_con->line + t_con->line_cursor,
+ t_con->line_size - t_con->line_cursor);
+ /* overwrite last char with whitespace */
+ telnet_write(connection, " \b", 2);
+
+ /* move back to cursor position*/
+ for (i = t_con->line_cursor; i < t_con->line_size; i++)
+ telnet_write(connection, "\b", 1);
+ }
+}
+
+static int telnet_exec_line(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+ struct command_context *command_context = connection->cmd_ctx;
+ int retval;
+
+ telnet_write(connection, "\r\n\x00", 3);
+
+ if (strcmp(t_con->line, "history") == 0) {
+ retval = telnet_history_print(connection);
+
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+ }
+
+ telnet_history_add(connection);
+
+ t_con->line_size = 0;
+
+ /* to suppress prompt in log callback during command execution */
+ t_con->prompt_visible = false;
+
+ if (strcmp(t_con->line, "shutdown") == 0)
+ telnet_save_history(t_con);
+
+ retval = command_run_line(command_context, t_con->line);
+
+ t_con->line_cursor = 0;
+ t_con->prompt_visible = true;
+
+ if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
+ return ERROR_SERVER_REMOTE_CLOSED;
+
+ /* the prompt is always placed at the line beginning */
+ telnet_write(connection, "\r", 1);
+
+ retval = telnet_prompt(connection);
+ if (retval == ERROR_SERVER_REMOTE_CLOSED)
+ return ERROR_SERVER_REMOTE_CLOSED;
+
+ return ERROR_OK;
+}
+
+static void telnet_cut_line_to_end(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+
+ /* FIXME: currently this function does not save to clipboard */
+
+ if (t_con->line_cursor < t_con->line_size) {
+ /* overwrite with space, until end of line, move back */
+ for (size_t i = t_con->line_cursor; i < t_con->line_size; i++)
+ telnet_write(connection, " ", 1);
+ for (size_t i = t_con->line_cursor; i < t_con->line_size; i++)
+ telnet_write(connection, "\b", 1);
+ t_con->line[t_con->line_cursor] = '\0';
+ t_con->line_size = t_con->line_cursor;
+ }
+}
+
+static void telnet_interrupt(struct connection *connection)
+{
+ struct telnet_connection *t_con = connection->priv;
+
+ /* print '^C' at line end, and display a new command prompt */
+ telnet_move_cursor(connection, t_con->line_size);
+ telnet_write(connection, "^C\n\r", 4);
+ t_con->line_cursor = 0;
+ t_con->line_size = 0;
+ telnet_prompt(connection);
+}
+
static void telnet_auto_complete(struct connection *connection)
{
struct telnet_connection *t_con = connection->priv;
unsigned char buffer[TELNET_BUFFER_SIZE];
unsigned char *buf_p;
struct telnet_connection *t_con = connection->priv;
- struct command_context *command_context = connection->cmd_ctx;
bytes_read = connection_read(connection, buffer, TELNET_BUFFER_SIZE);
}
t_con->line[t_con->line_size] = 0;
- telnet_write(connection, "\r\n\x00", 3);
-
- if (strcmp(t_con->line, "history") == 0) {
- retval = telnet_history_print(connection);
-
- if (retval != ERROR_OK)
- return retval;
-
- continue;
- }
-
- /* save only non-blank not repeating lines in the history */
- char *prev_line = t_con->history[(t_con->current_history > 0) ?
- t_con->current_history - 1 : TELNET_LINE_HISTORY_SIZE-1];
- if (*t_con->line && (!prev_line ||
- strcmp(t_con->line, prev_line))) {
- /* if the history slot is already taken, free it */
- free(t_con->history[t_con->next_history]);
-
- /* add line to history */
- t_con->history[t_con->next_history] = strdup(t_con->line);
-
- /* wrap history at TELNET_LINE_HISTORY_SIZE */
- t_con->next_history = (t_con->next_history + 1) %
- TELNET_LINE_HISTORY_SIZE;
-
- /* current history line starts at the new entry */
- t_con->current_history =
- t_con->next_history;
-
- free(t_con->history[t_con->current_history]);
- t_con->history[t_con->current_history] = strdup("");
- }
-
- t_con->line_size = 0;
-
- /* to suppress prompt in log callback during command execution */
- t_con->prompt_visible = false;
-
- if (strcmp(t_con->line, "shutdown") == 0)
- telnet_save_history(t_con);
-
- retval = command_run_line(command_context, t_con->line);
-
- t_con->line_cursor = 0;
- t_con->prompt_visible = true;
-
- if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
- return ERROR_SERVER_REMOTE_CLOSED;
-
- /* the prompt is always * placed at the line beginning */
- telnet_write(connection, "\r", 1);
-
- retval = telnet_prompt(connection);
- if (retval == ERROR_SERVER_REMOTE_CLOSED)
- return ERROR_SERVER_REMOTE_CLOSED;
-
+ retval = telnet_exec_line(connection);
+ if (retval != ERROR_OK)
+ return retval;
} else if ((*buf_p == 0x7f) || (*buf_p == 0x8)) { /* delete character */
- if (t_con->line_cursor > 0) {
- if (t_con->line_cursor != t_con->line_size) {
- size_t i;
- telnet_write(connection, "\b", 1);
- t_con->line_cursor--;
- t_con->line_size--;
- memmove(t_con->line + t_con->line_cursor,
- t_con->line + t_con->line_cursor + 1,
- t_con->line_size -
- t_con->line_cursor);
-
- telnet_write(connection,
- t_con->line + t_con->line_cursor,
- t_con->line_size -
- t_con->line_cursor);
- telnet_write(connection, " \b", 2);
- for (i = t_con->line_cursor; i < t_con->line_size; i++)
- telnet_write(connection, "\b", 1);
- } else {
- t_con->line_size--;
- t_con->line_cursor--;
- /* back space: move the 'printer' head one char
- * back, overwrite with space, move back again */
- telnet_write(connection, "\b \b", 3);
- }
- }
+ telnet_delete_character(connection);
} else if (*buf_p == 0x15) { /* clear line */
telnet_clear_line(connection, t_con);
} else if (*buf_p == CTRL('B')) { /* cursor left */
- if (t_con->line_cursor > 0) {
- telnet_write(connection, "\b", 1);
- t_con->line_cursor--;
- }
+ telnet_move_cursor(connection, t_con->line_cursor - 1);
t_con->state = TELNET_STATE_DATA;
} else if (*buf_p == CTRL('C')) { /* interrupt */
- /* print '^C' at line end, and display a new command prompt */
- telnet_move_cursor(connection, t_con->line_size);
- telnet_write(connection, "^C\n\r", 4);
- t_con->line_cursor = 0;
- t_con->line_size = 0;
- telnet_prompt(connection);
+ telnet_interrupt(connection);
} else if (*buf_p == CTRL('F')) { /* cursor right */
- if (t_con->line_cursor < t_con->line_size)
- telnet_write(connection, t_con->line + t_con->line_cursor++, 1);
+ telnet_move_cursor(connection, t_con->line_cursor + 1);
t_con->state = TELNET_STATE_DATA;
} else if (*buf_p == CTRL('P')) { /* cursor up */
telnet_history_up(connection);
} else if (*buf_p == CTRL('E')) { /* move the cursor to the end of the line */
telnet_move_cursor(connection, t_con->line_size);
} else if (*buf_p == CTRL('K')) { /* kill line to end */
- if (t_con->line_cursor < t_con->line_size) {
- /* overwrite with space, until end of line, move back */
- for (size_t i = t_con->line_cursor; i < t_con->line_size; i++)
- telnet_write(connection, " ", 1);
- for (size_t i = t_con->line_cursor; i < t_con->line_size; i++)
- telnet_write(connection, "\b", 1);
- t_con->line[t_con->line_cursor] = '\0';
- t_con->line_size = t_con->line_cursor;
- }
+ telnet_cut_line_to_end(connection);
} else if (*buf_p == '\t') {
telnet_auto_complete(connection);
} else {
case TELNET_STATE_ESCAPE:
if (t_con->last_escape == '[') {
if (*buf_p == 'D') { /* cursor left */
- if (t_con->line_cursor > 0) {
- telnet_write(connection, "\b", 1);
- t_con->line_cursor--;
- }
+ telnet_move_cursor(connection, t_con->line_cursor - 1);
t_con->state = TELNET_STATE_DATA;
} else if (*buf_p == 'C') { /* cursor right */
- if (t_con->line_cursor < t_con->line_size)
- telnet_write(connection,
- t_con->line + t_con->line_cursor++, 1);
+ telnet_move_cursor(connection, t_con->line_cursor + 1);
t_con->state = TELNET_STATE_DATA;
} else if (*buf_p == 'A') { /* cursor up */
telnet_history_up(connection);
} else if (t_con->last_escape == '3') {
/* Remove character */
if (*buf_p == '~') {
- if (t_con->line_cursor < t_con->line_size) {
- size_t i;
- t_con->line_size--;
- /* remove char from line buffer */
- memmove(t_con->line + t_con->line_cursor,
- t_con->line + t_con->line_cursor + 1,
- t_con->line_size - t_con->line_cursor);
-
- /* print remainder of buffer */
- telnet_write(connection, t_con->line + t_con->line_cursor,
- t_con->line_size - t_con->line_cursor);
- /* overwrite last char with whitespace */
- telnet_write(connection, " \b", 2);
-
- /* move back to cursor position*/
- for (i = t_con->line_cursor; i < t_con->line_size; i++)
- telnet_write(connection, "\b", 1);
- }
-
+ telnet_remove_character(connection);
t_con->state = TELNET_STATE_DATA;
} else
t_con->state = TELNET_STATE_DATA;