GUACAMOLE-597: Merge add optional flags to OSC for controlling redirected terminal output.
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commit
d8cb2218ee
@ -1551,6 +1551,10 @@ void guac_terminal_flush(guac_terminal* terminal) {
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if (terminal->typescript != NULL)
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guac_terminal_typescript_flush(terminal->typescript);
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/* Flush pipe stream if automatic flushing is enabled */
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if (terminal->pipe_stream_flags & GUAC_TERMINAL_PIPE_AUTOFLUSH)
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guac_terminal_pipe_stream_flush(terminal);
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/* Flush display state */
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guac_terminal_select_redraw(terminal);
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guac_terminal_commit_cursor(terminal);
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@ -1961,7 +1965,8 @@ int guac_terminal_next_tab(guac_terminal* term, int column) {
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return tabstop;
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}
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void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name) {
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void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name,
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int flags) {
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guac_client* client = term->client;
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guac_socket* socket = client->socket;
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@ -1972,13 +1977,14 @@ void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name) {
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/* Allocate and assign new pipe stream */
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term->pipe_stream = guac_client_alloc_stream(client);
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term->pipe_buffer_length = 0;
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term->pipe_stream_flags = flags;
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/* Open new pipe stream */
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guac_protocol_send_pipe(socket, term->pipe_stream, "text/plain", name);
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/* Log redirect at debug level */
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guac_client_log(client, GUAC_LOG_DEBUG,
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"Terminal output now redirected to pipe '%s'.", name);
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guac_client_log(client, GUAC_LOG_DEBUG, "Terminal output now directed to "
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"pipe \"%s\" (flags=%i).", name, flags);
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}
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@ -98,6 +98,21 @@
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*/
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#define GUAC_TERMINAL_SCHEME_NUMBERED "color"
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/**
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* Flag which specifies that terminal output should be sent to both the current
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* pipe stream and the user's display. By default, terminal output will be sent
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* only to the open pipe.
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*/
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#define GUAC_TERMINAL_PIPE_INTERPRET_OUTPUT 1
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/**
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* Flag which forces the open pipe stream to be flushed automatically, whenever
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* a new frame would be rendered, with only minimal buffering performed between
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* frames. By default, the contents of the pipe stream will be flushed only
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* when the buffer is full or the pipe stream is being closed.
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*/
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#define GUAC_TERMINAL_PIPE_AUTOFLUSH 2
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typedef struct guac_terminal guac_terminal;
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/**
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@ -215,6 +230,16 @@ struct guac_terminal {
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*/
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guac_stream* pipe_stream;
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/**
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* Bitwise OR of all flags which apply to the currently-open pipe stream.
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* If no pipe stream is open, this value has no meaning, and its contents
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* are undefined.
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*
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* @see GUAC_TERMINAL_PIPE_INTERPRET_OUTPUT
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* @see GUAC_TERMINAL_PIPE_AUTOFLUSH
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*/
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int pipe_stream_flags;
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/**
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* Buffer of data pending write to the pipe_stream. Data within this buffer
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* will be flushed to the pipe_stream when either (1) the buffer is full
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@ -920,8 +945,16 @@ int guac_terminal_next_tab(guac_terminal* term, int column);
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*
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* @param name
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* The name of the pipe stream to open.
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*
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* @param flags
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* A bitwise OR of all integer flags which should apply to the new pipe
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* stream.
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*
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* @see GUAC_TERMINAL_PIPE_INTERPRET_OUTPUT
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* @see GUAC_TERMINAL_PIPE_AUTOFLUSH
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*/
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void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name);
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void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name,
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int flags);
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/**
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* Writes a single byte of data to the pipe stream currently open and
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@ -135,8 +135,14 @@ int guac_terminal_echo(guac_terminal* term, unsigned char c) {
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/* Echo to pipe stream if open and not starting an ESC sequence */
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if (term->pipe_stream != NULL && c != 0x1B) {
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guac_terminal_pipe_stream_write(term, c);
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return 0;
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/* Do not render output while pipe is open unless explicitly requested
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* via flags */
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if (!(term->pipe_stream_flags & GUAC_TERMINAL_PIPE_INTERPRET_OUTPUT))
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return 0;
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}
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/* If using non-Unicode mapping, just map straight bytes */
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@ -1141,27 +1147,44 @@ int guac_terminal_download(guac_terminal* term, unsigned char c) {
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int guac_terminal_open_pipe_stream(guac_terminal* term, unsigned char c) {
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static char stream_name[2048];
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static char param[2048];
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static int length = 0;
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static int flags = 0;
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/* Open pipe on ECMA-48 ST (String Terminator) */
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if (c == 0x9C || c == 0x5C || c == 0x07) {
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/* End stream name string */
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stream_name[length++] = '\0';
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/* End parameter string */
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param[length++] = '\0';
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length = 0;
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/* Open new pipe stream */
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guac_terminal_pipe_stream_open(term, stream_name);
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/* Open new pipe stream using final parameter as name */
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guac_terminal_pipe_stream_open(term, param, flags);
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/* Return to echo mode */
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term->char_handler = guac_terminal_echo;
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/* Reset tracked flags for sake of any future pipe streams */
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flags = 0;
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}
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/* Otherwise, store character within stream name */
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else if (length < sizeof(stream_name)-1)
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stream_name[length++] = c;
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/* Interpret all parameters prior to the final parameter as integer
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* flags which should affect the pipe stream when opened */
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else if (c == ';') {
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/* End parameter string */
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param[length++] = '\0';
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length = 0;
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/* Parse parameter string as integer flags */
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flags |= atoi(param);
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}
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/* Otherwise, store character within parameter */
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else if (length < sizeof(param)-1)
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param[length++] = c;
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return 0;
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