GUACAMOLE-630: Allow SSH/telnet font family and size to be updated.
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9e28de70ec
commit
5683be0ea3
@ -26,15 +26,44 @@
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#include <guacamole/socket.h>
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#include <guacamole/user.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* All SSH connection settings which may be updated by unprivileged users
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* through "argv" streams.
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*/
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typedef enum guac_ssh_argv_setting {
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/**
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* The color scheme of the terminal.
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*/
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GUAC_SSH_ARGV_SETTING_COLOR_SCHEME,
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/**
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* The name of the font family used by the terminal.
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*/
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GUAC_SSH_ARGV_SETTING_FONT_NAME,
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/**
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* The size of the font used by the terminal, in points.
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*/
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GUAC_SSH_ARGV_SETTING_FONT_SIZE
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} guac_ssh_argv_setting;
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/**
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* The value or current status of a connection parameter received over an
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* "argv" stream.
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*/
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typedef struct guac_ssh_argv {
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/**
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* The specific setting being updated.
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*/
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guac_ssh_argv_setting setting;
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/**
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* Buffer space for containing the received argument value.
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*/
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@ -81,16 +110,51 @@ static int guac_ssh_argv_blob_handler(guac_user* user,
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static int guac_ssh_argv_end_handler(guac_user* user,
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guac_stream* stream) {
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int size;
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guac_client* client = user->client;
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guac_ssh_client* telnet_client = (guac_ssh_client*) client->data;
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guac_terminal* terminal = telnet_client->term;
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guac_ssh_client* ssh_client = (guac_ssh_client*) client->data;
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guac_terminal* terminal = ssh_client->term;
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/* Append null terminator to value */
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guac_ssh_argv* argv = (guac_ssh_argv*) stream->data;
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argv->buffer[argv->length] = '\0';
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/* Apply changes to chosen setting */
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switch (argv->setting) {
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/* Update color scheme */
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case GUAC_SSH_ARGV_SETTING_COLOR_SCHEME:
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guac_terminal_apply_color_scheme(terminal, argv->buffer);
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break;
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/* Update font name */
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case GUAC_SSH_ARGV_SETTING_FONT_NAME:
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guac_terminal_apply_font(terminal, argv->buffer, -1, 0);
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break;
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/* Update font size */
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case GUAC_SSH_ARGV_SETTING_FONT_SIZE:
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/* Update only if font size is sane */
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size = atoi(argv->buffer);
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if (size > 0) {
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guac_terminal_apply_font(terminal, NULL, size,
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ssh_client->settings->resolution);
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}
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break;
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}
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/* Update SSH pty size if connected */
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if (ssh_client->term_channel != NULL) {
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pthread_mutex_lock(&(ssh_client->term_channel_lock));
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libssh2_channel_request_pty_size(ssh_client->term_channel,
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terminal->term_width, terminal->term_height);
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pthread_mutex_unlock(&(ssh_client->term_channel_lock));
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}
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free(argv);
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return 0;
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@ -99,10 +163,26 @@ static int guac_ssh_argv_end_handler(guac_user* user,
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int guac_ssh_argv_handler(guac_user* user, guac_stream* stream,
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char* mimetype, char* name) {
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/* Allow users to update the color scheme */
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if (strcmp(name, "color-scheme") == 0) {
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guac_ssh_argv_setting setting;
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/* Allow users to update the color scheme and font details */
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if (strcmp(name, "color-scheme") == 0)
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setting = GUAC_SSH_ARGV_SETTING_COLOR_SCHEME;
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else if (strcmp(name, "font-name") == 0)
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setting = GUAC_SSH_ARGV_SETTING_FONT_NAME;
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else if (strcmp(name, "font-size") == 0)
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setting = GUAC_SSH_ARGV_SETTING_FONT_SIZE;
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/* No other connection parameters may be updated */
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else {
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guac_protocol_send_ack(user->socket, stream, "Not allowed.",
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GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN);
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guac_socket_flush(user->socket);
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return 0;
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}
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guac_ssh_argv* argv = malloc(sizeof(guac_ssh_argv));
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argv->setting = setting;
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argv->length = 0;
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/* Prepare stream to receive argument value */
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@ -111,16 +191,8 @@ int guac_ssh_argv_handler(guac_user* user, guac_stream* stream,
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stream->data = argv;
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/* Signal stream is ready */
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guac_protocol_send_ack(user->socket, stream, "Ready for color "
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"scheme.", GUAC_PROTOCOL_STATUS_SUCCESS);
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guac_socket_flush(user->socket);
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return 0;
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}
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/* No other connection parameters may be updated */
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guac_protocol_send_ack(user->socket, stream, "Not allowed.",
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GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN);
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guac_protocol_send_ack(user->socket, stream, "Ready for updated "
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"parameter.", GUAC_PROTOCOL_STATUS_SUCCESS);
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guac_socket_flush(user->socket);
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return 0;
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@ -29,12 +29,40 @@
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#include <stdlib.h>
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#include <string.h>
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/**
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* All telnet connection settings which may be updated by unprivileged users
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* through "argv" streams.
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*/
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typedef enum guac_telnet_argv_setting {
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/**
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* The color scheme of the terminal.
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*/
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GUAC_TELNET_ARGV_SETTING_COLOR_SCHEME,
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/**
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* The name of the font family used by the terminal.
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*/
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GUAC_TELNET_ARGV_SETTING_FONT_NAME,
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/**
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* The size of the font used by the terminal, in points.
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*/
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GUAC_TELNET_ARGV_SETTING_FONT_SIZE
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} guac_telnet_argv_setting;
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/**
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* The value or current status of a connection parameter received over an
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* "argv" stream.
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*/
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typedef struct guac_telnet_argv {
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/**
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* The specific setting being updated.
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*/
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guac_telnet_argv_setting setting;
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/**
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* Buffer space for containing the received argument value.
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*/
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@ -81,6 +109,8 @@ static int guac_telnet_argv_blob_handler(guac_user* user,
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static int guac_telnet_argv_end_handler(guac_user* user,
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guac_stream* stream) {
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int size;
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guac_client* client = user->client;
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guac_telnet_client* telnet_client = (guac_telnet_client*) client->data;
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guac_terminal* terminal = telnet_client->term;
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@ -89,8 +119,38 @@ static int guac_telnet_argv_end_handler(guac_user* user,
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guac_telnet_argv* argv = (guac_telnet_argv*) stream->data;
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argv->buffer[argv->length] = '\0';
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/* Apply changes to chosen setting */
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switch (argv->setting) {
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/* Update color scheme */
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case GUAC_TELNET_ARGV_SETTING_COLOR_SCHEME:
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guac_terminal_apply_color_scheme(terminal, argv->buffer);
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break;
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/* Update font name */
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case GUAC_TELNET_ARGV_SETTING_FONT_NAME:
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guac_terminal_apply_font(terminal, argv->buffer, -1, 0);
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break;
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/* Update font size */
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case GUAC_TELNET_ARGV_SETTING_FONT_SIZE:
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/* Update only if font size is sane */
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size = atoi(argv->buffer);
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if (size > 0) {
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guac_terminal_apply_font(terminal, NULL, size,
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telnet_client->settings->resolution);
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}
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break;
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}
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/* Update terminal window size if connected */
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if (telnet_client->telnet != NULL && telnet_client->naws_enabled)
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guac_telnet_send_naws(telnet_client->telnet, terminal->term_width,
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terminal->term_height);
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free(argv);
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return 0;
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@ -99,10 +159,26 @@ static int guac_telnet_argv_end_handler(guac_user* user,
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int guac_telnet_argv_handler(guac_user* user, guac_stream* stream,
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char* mimetype, char* name) {
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/* Allow users to update the color scheme */
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if (strcmp(name, "color-scheme") == 0) {
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guac_telnet_argv_setting setting;
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/* Allow users to update the color scheme and font details */
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if (strcmp(name, "color-scheme") == 0)
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setting = GUAC_TELNET_ARGV_SETTING_COLOR_SCHEME;
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else if (strcmp(name, "font-name") == 0)
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setting = GUAC_TELNET_ARGV_SETTING_FONT_NAME;
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else if (strcmp(name, "font-size") == 0)
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setting = GUAC_TELNET_ARGV_SETTING_FONT_SIZE;
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/* No other connection parameters may be updated */
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else {
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guac_protocol_send_ack(user->socket, stream, "Not allowed.",
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GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN);
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guac_socket_flush(user->socket);
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return 0;
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}
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guac_telnet_argv* argv = malloc(sizeof(guac_telnet_argv));
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argv->setting = setting;
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argv->length = 0;
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/* Prepare stream to receive argument value */
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@ -111,16 +187,8 @@ int guac_telnet_argv_handler(guac_user* user, guac_stream* stream,
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stream->data = argv;
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/* Signal stream is ready */
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guac_protocol_send_ack(user->socket, stream, "Ready for color "
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"scheme.", GUAC_PROTOCOL_STATUS_SUCCESS);
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guac_socket_flush(user->socket);
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return 0;
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}
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/* No other connection parameters may be updated */
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guac_protocol_send_ack(user->socket, stream, "Not allowed.",
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GUAC_PROTOCOL_STATUS_CLIENT_FORBIDDEN);
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guac_protocol_send_ack(user->socket, stream, "Ready for updated "
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"parameter.", GUAC_PROTOCOL_STATUS_SUCCESS);
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guac_socket_flush(user->socket);
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return 0;
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