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|
/*
* Remmina - The GTK+ Remote Desktop Client
* Copyright (C) 2010-2011 Vic Lee
* Copyright (C) 2014-2015 Antenore Gatta, Fabio Castelli, Giovanni Panozzo
* Copyright (C) 2016-2022 Antenore Gatta, Giovanni Panozzo
* Copyright (C) 2022-2023 Antenore Gatta, Giovanni Panozzo, Hiroyuki Tanaka
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. * If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. * If you
* do not wish to do so, delete this exception statement from your
* version. * If you delete this exception statement from all source
* files in the program, then also delete it here.
*
*/
#include <gmodule.h>
#include "vnc_plugin.h"
#include <rfb/rfbclient.h>
#define REMMINA_PLUGIN_VNC_FEATURE_PREF_QUALITY 1
#define REMMINA_PLUGIN_VNC_FEATURE_PREF_VIEWONLY 2
#define REMMINA_PLUGIN_VNC_FEATURE_PREF_DISABLESERVERINPUT 3
#define REMMINA_PLUGIN_VNC_FEATURE_TOOL_REFRESH 4
#define REMMINA_PLUGIN_VNC_FEATURE_TOOL_CHAT 5
#define REMMINA_PLUGIN_VNC_FEATURE_SCALE 6
#define REMMINA_PLUGIN_VNC_FEATURE_UNFOCUS 7
#define REMMINA_PLUGIN_VNC_FEATURE_TOOL_SENDCTRLALTDEL 8
#define REMMINA_PLUGIN_VNC_FEATURE_PREF_COLOR 9
#define REMMINA_PLUGIN_VNC_FEATURE_DYNRESUPDATE 10
#define VNC_DEFAULT_PORT 5900
#define GET_PLUGIN_DATA(gp) (RemminaPluginVncData *)g_object_get_data(G_OBJECT(gp), "plugin-data")
static RemminaPluginService *remmina_plugin_service = NULL;
static int dot_cursor_x_hot = 2;
static int dot_cursor_y_hot = 2;
static const gchar *dot_cursor_xpm[] =
{ "5 5 3 1", " c None", ". c #000000", "+ c #FFFFFF", " ... ", ".+++.", ".+ +.", ".+++.", " ... " };
#define LOCK_BUFFER(t) if (t) { CANCEL_DEFER } pthread_mutex_lock(&gpdata->buffer_mutex);
#define UNLOCK_BUFFER(t) pthread_mutex_unlock(&gpdata->buffer_mutex); if (t) { CANCEL_ASYNC }
struct onMainThread_cb_data {
enum { FUNC_UPDATE_SCALE } func;
GtkWidget * widget;
gint x, y, width, height;
RemminaProtocolWidget * gp;
gboolean scale;
/* Mutex for thread synchronization */
pthread_mutex_t mu;
/* Flag to catch cancellations */
gboolean cancelled;
};
static gboolean onMainThread_cb(struct onMainThread_cb_data *d)
{
TRACE_CALL(__func__);
if (!d->cancelled) {
switch (d->func) {
case FUNC_UPDATE_SCALE:
remmina_plugin_vnc_update_scale(d->gp, d->scale);
break;
}
pthread_mutex_unlock(&d->mu);
} else {
/* thread has been cancelled, so we must free d memory here */
g_free(d);
}
return G_SOURCE_REMOVE;
}
static void onMainThread_cleanup_handler(gpointer data)
{
TRACE_CALL(__func__);
struct onMainThread_cb_data *d = data;
d->cancelled = TRUE;
}
static void onMainThread_schedule_callback_and_wait(struct onMainThread_cb_data *d)
{
TRACE_CALL(__func__);
d->cancelled = FALSE;
pthread_cleanup_push(onMainThread_cleanup_handler, d);
pthread_mutex_init(&d->mu, NULL);
pthread_mutex_lock(&d->mu);
gdk_threads_add_idle((GSourceFunc)onMainThread_cb, (gpointer)d);
pthread_mutex_lock(&d->mu);
pthread_cleanup_pop(0);
pthread_mutex_unlock(&d->mu);
pthread_mutex_destroy(&d->mu);
}
/**
* Function check_for_endianness() returns 1, if architecture
* is little endian, 0 in case of big endian.
*/
static gboolean check_for_endianness()
{
unsigned int x = 1;
char *c = (char *)&x;
return (int)*c;
}
static void remmina_plugin_vnc_event_push(RemminaProtocolWidget *gp, gint event_type, gpointer p1, gpointer p2, gpointer p3)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaPluginVncEvent *event;
event = g_new(RemminaPluginVncEvent, 1);
event->event_type = event_type;
switch (event_type) {
case REMMINA_PLUGIN_VNC_EVENT_KEY:
event->event_data.key.keyval = GPOINTER_TO_UINT(p1);
event->event_data.key.pressed = GPOINTER_TO_INT(p2);
break;
case REMMINA_PLUGIN_VNC_EVENT_POINTER:
event->event_data.pointer.x = GPOINTER_TO_INT(p1);
event->event_data.pointer.y = GPOINTER_TO_INT(p2);
event->event_data.pointer.button_mask = GPOINTER_TO_INT(p3);
break;
case REMMINA_PLUGIN_VNC_EVENT_CUTTEXT:
case REMMINA_PLUGIN_VNC_EVENT_CHAT_SEND:
event->event_data.text.text = g_strdup((char *)p1);
break;
default:
break;
}
pthread_mutex_lock(&gpdata->vnc_event_queue_mutex);
g_queue_push_tail(gpdata->vnc_event_queue, event);
pthread_mutex_unlock(&gpdata->vnc_event_queue_mutex);
if (write(gpdata->vnc_event_pipe[1], "\0", 1)) {
/* Ignore */
}
}
static void remmina_plugin_vnc_event_free(RemminaPluginVncEvent *event)
{
TRACE_CALL(__func__);
switch (event->event_type) {
case REMMINA_PLUGIN_VNC_EVENT_CUTTEXT:
case REMMINA_PLUGIN_VNC_EVENT_CHAT_SEND:
g_free(event->event_data.text.text);
break;
default:
break;
}
g_free(event);
}
static void remmina_plugin_vnc_event_free_all(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaPluginVncEvent *event;
/* This is called from main thread after plugin thread has
* been closed, so no queue locking is necessary here */
while ((event = g_queue_pop_head(gpdata->vnc_event_queue)) != NULL)
remmina_plugin_vnc_event_free(event);
}
static void remmina_plugin_vnc_scale_area(RemminaProtocolWidget *gp, gint *x, gint *y, gint *w, gint *h)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
GtkAllocation widget_allocation;
gint width, height;
gint sx, sy, sw, sh;
if (gpdata->rgb_buffer == NULL)
return;
width = remmina_plugin_service->protocol_plugin_get_width(gp);
height = remmina_plugin_service->protocol_plugin_get_height(gp);
gtk_widget_get_allocation(GTK_WIDGET(gp), &widget_allocation);
if (widget_allocation.width == width && widget_allocation.height == height)
return; /* Same size, no scaling */
/* We have to extend the scaled region 2 scaled pixels, to avoid gaps */
sx = MIN(MAX(0, (*x) * widget_allocation.width / width - widget_allocation.width / width - 2), widget_allocation.width - 1);
sy = MIN(MAX(0, (*y) * widget_allocation.height / height - widget_allocation.height / height - 2), widget_allocation.height - 1);
sw = MIN(widget_allocation.width - sx, (*w) * widget_allocation.width / width + widget_allocation.width / width + 4);
sh = MIN(widget_allocation.height - sy, (*h) * widget_allocation.height / height + widget_allocation.height / height + 4);
*x = sx;
*y = sy;
*w = sw;
*h = sh;
}
static void remmina_plugin_vnc_update_scale(RemminaProtocolWidget *gp, gboolean scale)
{
TRACE_CALL(__func__);
/* This function can be called from a non main thread */
RemminaPluginVncData *gpdata;
gint width, height;
if (!remmina_plugin_service->is_main_thread()) {
struct onMainThread_cb_data *d;
d = (struct onMainThread_cb_data *)g_malloc(sizeof(struct onMainThread_cb_data));
d->func = FUNC_UPDATE_SCALE;
d->gp = gp;
d->scale = scale;
onMainThread_schedule_callback_and_wait(d);
g_free(d);
return;
}
gpdata = GET_PLUGIN_DATA(gp);
width = remmina_plugin_service->protocol_plugin_get_width(gp);
height = remmina_plugin_service->protocol_plugin_get_height(gp);
if (scale)
/* In scaled mode, drawing_area will get its dimensions from its parent */
gtk_widget_set_size_request(GTK_WIDGET(gpdata->drawing_area), -1, -1);
else
/* In non scaled mode, the plugins forces dimensions of drawing area */
gtk_widget_set_size_request(GTK_WIDGET(gpdata->drawing_area), width, height);
remmina_plugin_service->protocol_plugin_update_align(gp);
}
gboolean remmina_plugin_vnc_setcursor(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
GdkCursor *cur;
LOCK_BUFFER(FALSE);
gpdata->queuecursor_handler = 0;
if (gpdata->queuecursor_surface) {
cur = gdk_cursor_new_from_surface(gdk_display_get_default(), gpdata->queuecursor_surface, gpdata->queuecursor_x,
gpdata->queuecursor_y);
gdk_window_set_cursor(gtk_widget_get_window(gpdata->drawing_area), cur);
g_object_unref(cur);
cairo_surface_destroy(gpdata->queuecursor_surface);
gpdata->queuecursor_surface = NULL;
} else {
gdk_window_set_cursor(gtk_widget_get_window(gpdata->drawing_area), NULL);
}
UNLOCK_BUFFER(FALSE);
return FALSE;
}
static void remmina_plugin_vnc_queuecursor(RemminaProtocolWidget *gp, cairo_surface_t *surface, gint x, gint y)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
if (gpdata->queuecursor_surface)
cairo_surface_destroy(gpdata->queuecursor_surface);
gpdata->queuecursor_surface = surface;
gpdata->queuecursor_x = x;
gpdata->queuecursor_y = y;
if (!gpdata->queuecursor_handler)
gpdata->queuecursor_handler = IDLE_ADD((GSourceFunc)remmina_plugin_vnc_setcursor, gp);
}
typedef struct _RemminaKeyVal {
guint keyval;
guint16 keycode;
} RemminaKeyVal;
/***************************** LibVNCClient related codes *********************************/
static const uint32_t remmina_plugin_vnc_no_encrypt_auth_types[] =
{ rfbNoAuth, rfbVncAuth, rfbMSLogon, 0 };
static RemminaPluginVncEvent *remmina_plugin_vnc_event_queue_pop_head(RemminaPluginVncData *gpdata)
{
RemminaPluginVncEvent *event;
CANCEL_DEFER;
pthread_mutex_lock(&gpdata->vnc_event_queue_mutex);
event = g_queue_pop_head(gpdata->vnc_event_queue);
pthread_mutex_unlock(&gpdata->vnc_event_queue_mutex);
CANCEL_ASYNC;
return event;
}
static void remmina_plugin_vnc_process_vnc_event(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncEvent *event;
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
rfbClient *cl;
gchar buf[100];
cl = (rfbClient *)gpdata->client;
while ((event = remmina_plugin_vnc_event_queue_pop_head(gpdata)) != NULL) {
if (cl) {
switch (event->event_type) {
case REMMINA_PLUGIN_VNC_EVENT_KEY:
SendKeyEvent(cl, event->event_data.key.keyval, event->event_data.key.pressed);
break;
case REMMINA_PLUGIN_VNC_EVENT_POINTER:
SendPointerEvent(cl, event->event_data.pointer.x, event->event_data.pointer.y,
event->event_data.pointer.button_mask);
break;
case REMMINA_PLUGIN_VNC_EVENT_CUTTEXT:
if (event->event_data.text.text) {
rfbClientLog("sending clipboard text '%s'\n", event->event_data.text.text);
SendClientCutText(cl, event->event_data.text.text, strlen(event->event_data.text.text));
}
break;
case REMMINA_PLUGIN_VNC_EVENT_CHAT_OPEN:
TextChatOpen(cl);
break;
case REMMINA_PLUGIN_VNC_EVENT_CHAT_SEND:
TextChatSend(cl, event->event_data.text.text);
break;
case REMMINA_PLUGIN_VNC_EVENT_CHAT_CLOSE:
TextChatClose(cl);
TextChatFinish(cl);
break;
default:
rfbClientLog("Ignoring VNC event: 0x%x\n", event->event_type);
break;
}
}
remmina_plugin_vnc_event_free(event);
}
if (read(gpdata->vnc_event_pipe[0], buf, sizeof(buf))) {
/* Ignore */
}
}
typedef struct _RemminaPluginVncCuttextParam {
RemminaProtocolWidget * gp;
gchar * text;
gint textlen;
} RemminaPluginVncCuttextParam;
static void remmina_plugin_vnc_update_quality(rfbClient *cl, gint quality)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaFile *remminafile;
gchar *enc = NULL;
/**
* "0", "Poor (fastest)"
* "1", "Medium"
* "2", "Good"
* "9", "Best (slowest)"
*/
switch (quality) {
case 9:
cl->appData.useBGR233 = 0;
cl->appData.encodingsString = "copyrect zlib hextile raw";
cl->appData.compressLevel = 1;
cl->appData.qualityLevel = 9;
break;
case 2:
cl->appData.useBGR233 = 0;
cl->appData.encodingsString = "tight zrle ultra copyrect hextile zlib corre rre raw";
cl->appData.compressLevel = 2;
cl->appData.qualityLevel = 7;
break;
case 1:
cl->appData.useBGR233 = 0;
cl->appData.encodingsString = "tight zrle ultra copyrect hextile zlib corre rre raw";
cl->appData.compressLevel = 3;
cl->appData.qualityLevel = 5;
break;
case 0:
default:
// bpp8 and tight encoding is not supported in libvnc
cl->appData.useBGR233 = 1;
cl->appData.encodingsString = "copyrect zrle ultra zlib hextile corre rre raw";
cl->appData.qualityLevel = 1;
break;
}
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
enc = g_strdup(remmina_plugin_service->file_get_string(remminafile, "encodings"));
if (enc) {
cl->appData.encodingsString = g_strdup(enc);
g_free (enc), enc = NULL;
}
gboolean tight = remmina_plugin_service->file_get_int (remminafile, "tightencoding", FALSE);
if (tight) {
if (!g_strrstr ( g_strdup(cl->appData.encodingsString), "tight\0")) {
cl->appData.encodingsString = g_strdup_printf("%s %s", "tight", g_strdup(cl->appData.encodingsString));
}
}
REMMINA_PLUGIN_DEBUG("Quality: %d", quality);
REMMINA_PLUGIN_DEBUG("Encodings: %s", cl->appData.encodingsString);
}
static void remmina_plugin_vnc_update_colordepth(rfbClient *cl, gint colordepth)
{
TRACE_CALL(__func__);
cl->format.depth = colordepth;
cl->appData.requestedDepth = colordepth;
cl->format.trueColour = 1;
cl->format.bigEndian = check_for_endianness()?FALSE:TRUE;
switch (colordepth) {
case 8:
cl->format.depth = 8;
cl->format.bitsPerPixel = 8;
cl->format.blueMax = 3;
cl->format.blueShift = 6;
cl->format.greenMax = 7;
cl->format.greenShift = 3;
cl->format.redMax = 7;
cl->format.redShift = 0;
break;
case 16:
cl->format.depth = 15;
cl->format.bitsPerPixel = 16;
cl->format.redShift = 11;
cl->format.greenShift = 6;
cl->format.blueShift = 1;
cl->format.redMax = 31;
cl->format.greenMax = 31;
cl->format.blueMax = 31;
break;
case 32:
default:
cl->format.depth = 24;
cl->format.bitsPerPixel = 32;
cl->format.blueShift = 0;
cl->format.redShift = 16;
cl->format.greenShift = 8;
cl->format.blueMax = 0xff;
cl->format.redMax = 0xff;
cl->format.greenMax = 0xff;
break;
}
rfbClientLog("colordepth = %d\n", colordepth);
rfbClientLog("format.depth = %d\n", cl->format.depth);
rfbClientLog("format.bitsPerPixel = %d\n", cl->format.bitsPerPixel);
rfbClientLog("format.blueShift = %d\n", cl->format.blueShift);
rfbClientLog("format.redShift = %d\n", cl->format.redShift);
rfbClientLog("format.trueColour = %d\n", cl->format.trueColour);
rfbClientLog("format.greenShift = %d\n", cl->format.greenShift);
rfbClientLog("format.blueMax = %d\n", cl->format.blueMax);
rfbClientLog("format.redMax = %d\n", cl->format.redMax);
rfbClientLog("format.greenMax = %d\n", cl->format.greenMax);
rfbClientLog("format.bigEndian = %d\n", cl->format.bigEndian);
}
static rfbBool remmina_plugin_vnc_rfb_allocfb(rfbClient *cl)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gint width, height, depth, size;
gboolean scale;
cairo_surface_t *new_surface, *old_surface;
width = cl->width;
height = cl->height;
depth = cl->format.bitsPerPixel;
size = width * height * (depth / 8);
new_surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
if (cairo_surface_status(new_surface) != CAIRO_STATUS_SUCCESS)
return FALSE;
old_surface = gpdata->rgb_buffer;
LOCK_BUFFER(TRUE);
remmina_plugin_service->protocol_plugin_set_width(gp, width);
remmina_plugin_service->protocol_plugin_set_height(gp, height);
gpdata->rgb_buffer = new_surface;
if (gpdata->vnc_buffer)
g_free(gpdata->vnc_buffer);
gpdata->vnc_buffer = (guchar *)g_malloc(size);
cl->frameBuffer = gpdata->vnc_buffer;
UNLOCK_BUFFER(TRUE);
if (old_surface)
cairo_surface_destroy(old_surface);
scale = (remmina_plugin_service->remmina_protocol_widget_get_current_scale_mode(gp) != REMMINA_PROTOCOL_WIDGET_SCALE_MODE_NONE);
remmina_plugin_vnc_update_scale(gp, scale);
/* Notify window of change so that scroll border can be hidden or shown if needed */
remmina_plugin_service->protocol_plugin_desktop_resize(gp);
/* Refresh the client’s updateRect - bug in xvncclient */
cl->updateRect.w = width;
cl->updateRect.h = height;
return TRUE;
}
static gint remmina_plugin_vnc_bits(gint n)
{
TRACE_CALL(__func__);
gint b = 0;
while (n) {
b++;
n >>= 1;
}
return b ? b : 1;
}
static gboolean remmina_plugin_vnc_queue_draw_area_real(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gint x, y, w, h;
if (GTK_IS_WIDGET(gp) && gpdata->connected) {
LOCK_BUFFER(FALSE);
x = gpdata->queuedraw_x;
y = gpdata->queuedraw_y;
w = gpdata->queuedraw_w;
h = gpdata->queuedraw_h;
gpdata->queuedraw_handler = 0;
UNLOCK_BUFFER(FALSE);
gtk_widget_queue_draw_area(GTK_WIDGET(gp), x, y, w, h);
}
return FALSE;
}
static void remmina_plugin_vnc_queue_draw_area(RemminaProtocolWidget *gp, gint x, gint y, gint w, gint h)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gint nx2, ny2, ox2, oy2;
LOCK_BUFFER(TRUE);
if (gpdata->queuedraw_handler) {
nx2 = x + w;
ny2 = y + h;
ox2 = gpdata->queuedraw_x + gpdata->queuedraw_w;
oy2 = gpdata->queuedraw_y + gpdata->queuedraw_h;
gpdata->queuedraw_x = MIN(gpdata->queuedraw_x, x);
gpdata->queuedraw_y = MIN(gpdata->queuedraw_y, y);
gpdata->queuedraw_w = MAX(ox2, nx2) - gpdata->queuedraw_x;
gpdata->queuedraw_h = MAX(oy2, ny2) - gpdata->queuedraw_y;
} else {
gpdata->queuedraw_x = x;
gpdata->queuedraw_y = y;
gpdata->queuedraw_w = w;
gpdata->queuedraw_h = h;
gpdata->queuedraw_handler = IDLE_ADD((GSourceFunc)remmina_plugin_vnc_queue_draw_area_real, gp);
}
UNLOCK_BUFFER(TRUE);
}
static void remmina_plugin_vnc_rfb_fill_buffer(rfbClient *cl, guchar *dest, gint dest_rowstride, guchar *src,
gint src_rowstride, guchar *mask, gint w, gint h)
{
TRACE_CALL(__func__);
guchar *srcptr;
gint bytesPerPixel;
guint32 src_pixel;
gint ix, iy;
gint i;
guchar c;
gint rs, gs, bs, rm, gm, bm, rl, gl, bl, rr, gr, br;
gint r;
guint32 *destptr;
union {
struct {
guchar a, r, g, b;
} colors;
guint32 argb;
} dst_pixel;
bytesPerPixel = cl->format.bitsPerPixel / 8;
switch (cl->format.bitsPerPixel) {
case 32:
/* The following codes fill in the Alpha channel swap red/green value */
for (iy = 0; iy < h; iy++) {
destptr = (guint32 *)(dest + iy * dest_rowstride);
srcptr = src + iy * src_rowstride;
for (ix = 0; ix < w; ix++) {
if (!mask || *mask++) {
dst_pixel.colors.a = 0xff;
dst_pixel.colors.r = *(srcptr + 2);
dst_pixel.colors.g = *(srcptr + 1);
dst_pixel.colors.b = *srcptr;
*destptr++ = ntohl(dst_pixel.argb);
} else {
*destptr++ = 0;
}
srcptr += 4;
}
}
break;
default:
rm = cl->format.redMax;
gm = cl->format.greenMax;
bm = cl->format.blueMax;
rr = remmina_plugin_vnc_bits(rm);
gr = remmina_plugin_vnc_bits(gm);
br = remmina_plugin_vnc_bits(bm);
rl = 8 - rr;
gl = 8 - gr;
bl = 8 - br;
rs = cl->format.redShift;
gs = cl->format.greenShift;
bs = cl->format.blueShift;
for (iy = 0; iy < h; iy++) {
destptr = (guint32 *)(dest + iy * dest_rowstride);
srcptr = src + iy * src_rowstride;
for (ix = 0; ix < w; ix++) {
src_pixel = 0;
for (i = 0; i < bytesPerPixel; i++)
src_pixel += (*srcptr++) << (8 * i);
if (!mask || *mask++) {
dst_pixel.colors.a = 0xff;
c = (guchar)((src_pixel >> rs) & rm) << rl;
for (r = rr; r < 8; r *= 2)
c |= c >> r;
dst_pixel.colors.r = c;
c = (guchar)((src_pixel >> gs) & gm) << gl;
for (r = gr; r < 8; r *= 2)
c |= c >> r;
dst_pixel.colors.g = c;
c = (guchar)((src_pixel >> bs) & bm) << bl;
for (r = br; r < 8; r *= 2)
c |= c >> r;
dst_pixel.colors.b = c;
*destptr++ = ntohl(dst_pixel.argb);
} else {
*destptr++ = 0;
}
}
}
break;
}
}
static void remmina_plugin_vnc_rfb_updatefb(rfbClient *cl, int x, int y, int w, int h)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gint bytesPerPixel;
gint rowstride;
gint width;
LOCK_BUFFER(TRUE);
if (w >= 1 || h >= 1) {
width = remmina_plugin_service->protocol_plugin_get_width(gp);
bytesPerPixel = cl->format.bitsPerPixel / 8;
rowstride = cairo_image_surface_get_stride(gpdata->rgb_buffer);
cairo_surface_flush(gpdata->rgb_buffer);
remmina_plugin_vnc_rfb_fill_buffer(cl, cairo_image_surface_get_data(gpdata->rgb_buffer) + y * rowstride + x * 4,
rowstride, gpdata->vnc_buffer + ((y * width + x) * bytesPerPixel), width * bytesPerPixel, NULL,
w, h);
cairo_surface_mark_dirty(gpdata->rgb_buffer);
}
if ((remmina_plugin_service->remmina_protocol_widget_get_current_scale_mode(gp) != REMMINA_PROTOCOL_WIDGET_SCALE_MODE_NONE))
remmina_plugin_vnc_scale_area(gp, &x, &y, &w, &h);
UNLOCK_BUFFER(TRUE);
remmina_plugin_vnc_queue_draw_area(gp, x, y, w, h);
}
static void remmina_plugin_vnc_rfb_finished(rfbClient *cl) __attribute__ ((unused));
static void remmina_plugin_vnc_rfb_finished(rfbClient *cl)
{
TRACE_CALL(__func__);
REMMINA_PLUGIN_DEBUG("FinishedFrameBufferUpdate");
}
static void remmina_plugin_vnc_rfb_led_state(rfbClient *cl, int value, int pad)
{
TRACE_CALL(__func__);
REMMINA_PLUGIN_DEBUG("Led state - value: %d, pad: %d", value, pad);
}
static gboolean remmina_plugin_vnc_queue_cuttext(RemminaPluginVncCuttextParam *param)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = param->gp;
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
GDateTime *t;
glong diff;
const char *cur_charset;
gchar *text;
gsize br, bw;
if (GTK_IS_WIDGET(gp) && gpdata->connected) {
t = g_date_time_new_now_utc();
diff = g_date_time_difference(t, gpdata->clipboard_timer) / 100000; // tenth of second
if (diff >= 10) {
g_date_time_unref(gpdata->clipboard_timer);
gpdata->clipboard_timer = t;
/* Convert text from VNC latin-1 to current GTK charset (usually UTF-8) */
g_get_charset(&cur_charset);
text = g_convert_with_fallback(param->text, param->textlen, cur_charset, "ISO-8859-1", "?", &br, &bw, NULL);
gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD), text, bw);
g_free(text);
} else {
g_date_time_unref(t);
}
}
g_free(param->text);
g_free(param);
return FALSE;
}
static void remmina_plugin_vnc_rfb_cuttext(rfbClient *cl, const char *text, int textlen)
{
TRACE_CALL(__func__);
RemminaPluginVncCuttextParam *param;
param = g_new(RemminaPluginVncCuttextParam, 1);
param->gp = (RemminaProtocolWidget *)rfbClientGetClientData(cl, NULL);
param->text = g_malloc(textlen);
memcpy(param->text, text, textlen);
param->textlen = textlen;
IDLE_ADD((GSourceFunc)remmina_plugin_vnc_queue_cuttext, param);
}
static char *
remmina_plugin_vnc_rfb_password(rfbClient *cl)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
gchar *pwd = NULL;
gpdata->auth_called = TRUE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (gpdata->auth_first)
pwd = g_strdup(remmina_plugin_service->file_get_string(remminafile, "password"));
if (!pwd) {
gboolean save;
gint ret;
gboolean disablepasswordstoring = remmina_plugin_service->file_get_int(remminafile, "disablepasswordstoring", FALSE);
ret = remmina_plugin_service->protocol_plugin_init_auth(gp,
(disablepasswordstoring ? 0 : REMMINA_MESSAGE_PANEL_FLAG_SAVEPASSWORD),
_("Enter VNC password"),
NULL,
remmina_plugin_service->file_get_string(remminafile, "password"),
NULL,
NULL);
if (ret != GTK_RESPONSE_OK) {
gpdata->connected = FALSE;
return NULL;
}
pwd = remmina_plugin_service->protocol_plugin_init_get_password(gp);
save = remmina_plugin_service->protocol_plugin_init_get_savepassword(gp);
if (save)
remmina_plugin_service->file_set_string(remminafile, "password", pwd);
else
remmina_plugin_service->file_set_string(remminafile, "password", NULL);
}
return pwd;
}
static rfbCredential *
remmina_plugin_vnc_rfb_credential(rfbClient *cl, int credentialType)
{
TRACE_CALL(__func__);
rfbCredential *cred;
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
gint ret;
gchar *s1, *s2;
gboolean disablepasswordstoring;
gpdata->auth_called = TRUE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
cred = g_new0(rfbCredential, 1);
switch (credentialType) {
case rfbCredentialTypeUser:
s1 = g_strdup(remmina_plugin_service->file_get_string(remminafile, "username"));
s2 = g_strdup(remmina_plugin_service->file_get_string(remminafile, "password"));
if (gpdata->auth_first && s1 && s2) {
cred->userCredential.username = s1;
cred->userCredential.password = s2;
} else {
g_free(s1);
g_free(s2);
disablepasswordstoring = remmina_plugin_service->file_get_int(remminafile, "disablepasswordstoring", FALSE);
ret = remmina_plugin_service->protocol_plugin_init_auth(gp,
(disablepasswordstoring ? 0 : REMMINA_MESSAGE_PANEL_FLAG_SAVEPASSWORD) | REMMINA_MESSAGE_PANEL_FLAG_USERNAME,
_("Enter VNC authentication credentials"),
remmina_plugin_service->file_get_string(remminafile, "username"),
remmina_plugin_service->file_get_string(remminafile, "password"),
NULL,
NULL);
if (ret == GTK_RESPONSE_OK) {
gboolean save = remmina_plugin_service->protocol_plugin_init_get_savepassword(gp);
cred->userCredential.username = remmina_plugin_service->protocol_plugin_init_get_username(gp);
cred->userCredential.password = remmina_plugin_service->protocol_plugin_init_get_password(gp);
if (save) {
remmina_plugin_service->file_set_string(remminafile, "username", cred->userCredential.username);
remmina_plugin_service->file_set_string(remminafile, "password", cred->userCredential.password);
} else {
remmina_plugin_service->file_set_string(remminafile, "username", NULL);
remmina_plugin_service->file_set_string(remminafile, "password", NULL);
}
} else {
g_free(cred);
cred = NULL;
gpdata->connected = FALSE;
}
}
break;
case rfbCredentialTypeX509:
if (gpdata->auth_first &&
remmina_plugin_service->file_get_string(remminafile, "cacert")) {
cred->x509Credential.x509CACertFile = g_strdup(remmina_plugin_service->file_get_string(remminafile, "cacert"));
cred->x509Credential.x509CACrlFile = g_strdup(remmina_plugin_service->file_get_string(remminafile, "cacrl"));
cred->x509Credential.x509ClientCertFile = g_strdup(remmina_plugin_service->file_get_string(remminafile, "clientcert"));
cred->x509Credential.x509ClientKeyFile = g_strdup(remmina_plugin_service->file_get_string(remminafile, "clientkey"));
} else {
ret = remmina_plugin_service->protocol_plugin_init_authx509(gp);
if (ret == GTK_RESPONSE_OK) {
cred->x509Credential.x509CACertFile = remmina_plugin_service->protocol_plugin_init_get_cacert(gp);
cred->x509Credential.x509CACrlFile = remmina_plugin_service->protocol_plugin_init_get_cacrl(gp);
cred->x509Credential.x509ClientCertFile = remmina_plugin_service->protocol_plugin_init_get_clientcert(gp);
cred->x509Credential.x509ClientKeyFile = remmina_plugin_service->protocol_plugin_init_get_clientkey(gp);
} else {
g_free(cred);
cred = NULL;
gpdata->connected = FALSE;
}
}
break;
default:
g_free(cred);
cred = NULL;
break;
}
return cred;
}
static void remmina_plugin_vnc_rfb_cursor_shape(rfbClient *cl, int xhot, int yhot, int width, int height, int bytesPerPixel)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp = rfbClientGetClientData(cl, NULL);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
if (!gtk_widget_get_window(GTK_WIDGET(gp)))
return;
if (width && height) {
gint stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
guchar *data = g_malloc(stride * height);
remmina_plugin_vnc_rfb_fill_buffer(cl, data, stride, cl->rcSource,
width * cl->format.bitsPerPixel / 8, cl->rcMask, width, height);
cairo_surface_t *surface = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32, width, height, stride);
if (cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS) {
g_free(data);
return;
}
if (cairo_surface_set_user_data(surface, NULL, NULL, g_free) != CAIRO_STATUS_SUCCESS) {
g_free(data);
return;
}
LOCK_BUFFER(TRUE);
remmina_plugin_vnc_queuecursor(gp, surface, xhot, yhot);
UNLOCK_BUFFER(TRUE);
}
}
static void remmina_plugin_vnc_rfb_bell(rfbClient *cl)
{
TRACE_CALL(__func__);
REMMINA_PLUGIN_DEBUG("Bell message received");
RemminaProtocolWidget *gp;
RemminaFile *remminafile;
GdkWindow *window;
gp = (RemminaProtocolWidget *)(rfbClientGetClientData(cl, NULL));
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "disableserverbell", FALSE))
return;
window = gtk_widget_get_window(GTK_WIDGET(gp));
if (window)
gdk_window_beep(window);
REMMINA_PLUGIN_DEBUG("Beep emitted");
}
/* Translate known VNC messages. It’s for intltool only, not for gcc */
#ifdef __DO_NOT_COMPILE_ME__
N_("Unable to connect to VNC server")
N_("Couldn’t convert '%s' to host address")
N_("VNC connection failed: %s")
N_("Your connection has been rejected.")
#endif
/** @todo We only store the last message at this moment. */
#define MAX_ERROR_LENGTH 1000
static gchar vnc_error[MAX_ERROR_LENGTH + 1];
static gboolean vnc_encryption_disable_requested;
static void remmina_plugin_vnc_rfb_output(const char *format, ...)
{
TRACE_CALL(__func__);
gchar *f, *p, *ff;
if (!rfbEnableClientLogging)
return;
va_list args;
va_start(args, format);
/* eliminate the last \n */
f = g_strdup(format);
if (f[strlen(f) - 1] == '\n') f[strlen(f) - 1] = '\0';
if (g_strcmp0(f, "VNC connection failed: %s") == 0) {
p = va_arg(args, gchar *);
g_snprintf(vnc_error, MAX_ERROR_LENGTH, _(f), _(p));
} else if (g_strcmp0(f, "The VNC server requested an unknown authentication method. %s") == 0) {
p = va_arg(args, gchar *);
if (vnc_encryption_disable_requested) {
ff = g_strconcat(_("The VNC server requested an unknown authentication method. %s"),
". ",
_("Please retry after turning on encryption for this profile."),
NULL);
g_snprintf(vnc_error, MAX_ERROR_LENGTH, ff, p);
g_free(ff);
} else {
g_snprintf(vnc_error, MAX_ERROR_LENGTH, _(f), p);
}
} else {
g_vsnprintf(vnc_error, MAX_ERROR_LENGTH, _(f), args);
}
g_free(f);
va_end(args);
REMMINA_PLUGIN_DEBUG("VNC returned: %s", vnc_error);
}
static void remmina_plugin_vnc_chat_on_send(RemminaProtocolWidget *gp, const gchar *text)
{
TRACE_CALL(__func__);
gchar *ptr;
/* Need to add a line-feed for UltraVNC */
ptr = g_strdup_printf("%s\n", text);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_CHAT_SEND, ptr, NULL, NULL);
g_free(ptr);
}
static void remmina_plugin_vnc_chat_on_destroy(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_CHAT_CLOSE, NULL, NULL, NULL);
}
/* Send CTRL+ALT+DEL keys keystrokes to the plugin drawing_area widget */
static void remmina_plugin_vnc_send_ctrlaltdel(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
guint keys[] = { GDK_KEY_Control_L, GDK_KEY_Alt_L, GDK_KEY_Delete };
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
remmina_plugin_service->protocol_plugin_send_keys_signals(gpdata->drawing_area,
keys, G_N_ELEMENTS(keys), GDK_KEY_PRESS | GDK_KEY_RELEASE);
}
static gboolean remmina_plugin_vnc_close_chat(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
remmina_plugin_service->protocol_plugin_chat_close(gp);
return FALSE;
}
static gboolean remmina_plugin_vnc_open_chat(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
rfbClient *cl;
cl = (rfbClient *)gpdata->client;
remmina_plugin_service->protocol_plugin_chat_open(gp, cl->desktopName, remmina_plugin_vnc_chat_on_send,
remmina_plugin_vnc_chat_on_destroy);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_CHAT_OPEN, NULL, NULL, NULL);
return FALSE;
}
static void remmina_plugin_vnc_rfb_chat(rfbClient *cl, int value, char *text)
{
TRACE_CALL(__func__);
RemminaProtocolWidget *gp;
gp = (RemminaProtocolWidget *)(rfbClientGetClientData(cl, NULL));
switch (value) {
case rfbTextChatOpen:
IDLE_ADD((GSourceFunc)remmina_plugin_vnc_open_chat, gp);
break;
case rfbTextChatClose:
/* Do nothing… but wait for the next rfbTextChatFinished signal */
break;
case rfbTextChatFinished:
IDLE_ADD((GSourceFunc)remmina_plugin_vnc_close_chat, gp);
break;
default:
/* value is the text length */
remmina_plugin_service->protocol_plugin_chat_receive(gp, text);
break;
}
}
static gboolean remmina_plugin_vnc_incoming_connection(RemminaProtocolWidget *gp, rfbClient *cl)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
fd_set fds;
/**
* @fixme This may fail or not working as expected with multiple network interfaces,
* change with ListenAtTcpPortAndAddress
*/
gpdata->listen_sock = ListenAtTcpPort(cl->listenPort);
if (gpdata->listen_sock < 0)
return FALSE;
remmina_plugin_service->protocol_plugin_init_show_listen(gp, cl->listenPort);
remmina_plugin_service->protocol_plugin_start_reverse_tunnel(gp, cl->listenPort);
FD_ZERO(&fds);
if (gpdata->listen_sock >= 0)
FD_SET(gpdata->listen_sock, &fds);
select(gpdata->listen_sock + 1, &fds, NULL, NULL, NULL);
if (!FD_ISSET(gpdata->listen_sock, &fds)) {
close(gpdata->listen_sock);
gpdata->listen_sock = -1;
return FALSE;
}
if (FD_ISSET(gpdata->listen_sock, &fds))
cl->sock = AcceptTcpConnection(gpdata->listen_sock);
if (cl->sock >= 0) {
close(gpdata->listen_sock);
gpdata->listen_sock = -1;
}
if (cl->sock < 0 || !SetNonBlocking(cl->sock))
return FALSE;
return TRUE;
}
static gboolean remmina_plugin_vnc_main_loop(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gint ret;
gint i;
rfbClient *cl;
fd_set fds;
struct timeval timeout;
if (!gpdata->connected) {
gpdata->running = FALSE;
return FALSE;
}
cl = (rfbClient *)gpdata->client;
/*
* Do not explicitly wait while data is on the buffer, see:
* - https://jira.glyptodon.com/browse/GUAC-1056
* - https://jira.glyptodon.com/browse/GUAC-1056?focusedCommentId=14348&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14348
* - https://github.com/apache/guacamole-server/blob/67680bd2d51e7949453f0f7ffc7f4234a1136715/src/protocols/vnc/vnc.c#L155
*/
if (cl->buffered)
goto handle_buffered;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(cl->sock, &fds);
FD_SET(gpdata->vnc_event_pipe[0], &fds);
ret = select(MAX(cl->sock, gpdata->vnc_event_pipe[0]) + 1, &fds, NULL, NULL, &timeout);
/* Sometimes it returns <0 when opening a modal dialog in other window. Absolutely weird */
/* So we continue looping anyway */
if (ret <= 0)
return TRUE;
if (FD_ISSET(gpdata->vnc_event_pipe[0], &fds))
remmina_plugin_vnc_process_vnc_event(gp);
if (FD_ISSET(cl->sock, &fds)) {
i = WaitForMessage(cl, 500);
if (i < 0)
return TRUE;
handle_buffered:
if (!HandleRFBServerMessage(cl)) {
gpdata->running = FALSE;
if (gpdata->connected && !remmina_plugin_service->protocol_plugin_is_closed(gp))
remmina_plugin_service->protocol_plugin_signal_connection_closed(gp);
return FALSE;
}
}
return TRUE;
}
static gboolean remmina_plugin_vnc_main(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
rfbClient *cl = NULL;
gchar *host;
gchar *s = NULL;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
gpdata->running = TRUE;
rfbClientLog = rfbClientErr = remmina_plugin_vnc_rfb_output;
gint colordepth = remmina_plugin_service->file_get_int(remminafile, "colordepth", 32);
gint quality = remmina_plugin_service->file_get_int(remminafile, "quality", 9);
while (gpdata->connected) {
gpdata->auth_called = FALSE;
host = remmina_plugin_service->protocol_plugin_start_direct_tunnel(gp, VNC_DEFAULT_PORT, TRUE);
if (host == NULL) {
REMMINA_PLUGIN_DEBUG("host is null");
gpdata->connected = FALSE;
break;
}
/* int bitsPerSample,int samplesPerPixel, int bytesPerPixel */
switch (colordepth) {
case 8:
cl = rfbGetClient(2, 3, 1);
break;
case 15:
case 16:
cl = rfbGetClient(5, 3, 2);
break;
case 24:
cl = rfbGetClient(6, 3, 3);
break;
case 32:
default:
cl = rfbGetClient(8, 3, 4);
break;
}
REMMINA_PLUGIN_DEBUG("Color depth: %d", colordepth);
cl->MallocFrameBuffer = remmina_plugin_vnc_rfb_allocfb;
cl->canHandleNewFBSize = TRUE;
cl->GetPassword = remmina_plugin_vnc_rfb_password;
cl->GetCredential = remmina_plugin_vnc_rfb_credential;
cl->GotFrameBufferUpdate = remmina_plugin_vnc_rfb_updatefb;
/**
* @fixme we have to implement FinishedFrameBufferUpdate
* This is to know when the server has finished to send a batch of frame buffer
* updates.
* cl->FinishedFrameBufferUpdate = remmina_plugin_vnc_rfb_finished;
*/
/**
* @fixme we have to implement HandleKeyboardLedState
* cl->HandleKeyboardLedState = remmina_plugin_vnc_rfb_led_state
*/
cl->HandleKeyboardLedState = remmina_plugin_vnc_rfb_led_state;
cl->GotXCutText = (
remmina_plugin_service->file_get_int(remminafile, "disableclipboard", FALSE) ?
NULL : remmina_plugin_vnc_rfb_cuttext);
cl->GotCursorShape = remmina_plugin_vnc_rfb_cursor_shape;
cl->Bell = remmina_plugin_vnc_rfb_bell;
cl->HandleTextChat = remmina_plugin_vnc_rfb_chat;
/**
* @fixme we have to implement HandleXvpMsg
* cl->HandleXvpMsg = remmina_plugin_vnc_rfb_handle_xvp;
*/
rfbClientSetClientData(cl, NULL, gp);
if (host[0] == '\0') {
cl->serverHost = g_strdup(host);
cl->listenSpecified = TRUE;
if (remmina_plugin_service->file_get_int(remminafile, "ssh_tunnel_enabled", FALSE))
/* When we use reverse tunnel, the local port does not really matter.
* Hardcode a default port just in case the remote port is customized
* to a privilege port then we will have problem listening. */
cl->listenPort = 5500;
else
cl->listenPort = remmina_plugin_service->file_get_int(remminafile, "listenport", 5500);
remmina_plugin_vnc_incoming_connection(gp, cl);
} else {
if (strstr(host, "unix://") == host) {
cl->serverHost = g_strdup(host + strlen("unix://"));
cl->serverPort = 0;
} else {
remmina_plugin_service->get_server_port(host, VNC_DEFAULT_PORT, &s, &cl->serverPort);
cl->serverHost = g_strdup(s);
g_free(s);
/* Support short-form (:0, :1) */
if (cl->serverPort < 100)
cl->serverPort += VNC_DEFAULT_PORT;
}
}
g_free(host);
host = NULL;
if (cl->serverHost && strstr(cl->serverHost, "unix://") != cl->serverHost && remmina_plugin_service->file_get_string(remminafile, "proxy")) {
remmina_plugin_service->get_server_port(
remmina_plugin_service->file_get_string(remminafile, "server"),
VNC_DEFAULT_PORT,
&cl->destHost,
&cl->destPort);
remmina_plugin_service->get_server_port(
remmina_plugin_service->file_get_string(remminafile, "proxy"),
VNC_DEFAULT_PORT,
&cl->serverHost,
&cl->serverPort);
REMMINA_PLUGIN_DEBUG("cl->serverHost: %s", cl->serverHost);
REMMINA_PLUGIN_DEBUG("cl->serverPort: %d", cl->serverPort);
REMMINA_PLUGIN_DEBUG("cl->destHost: %s", cl->destHost);
REMMINA_PLUGIN_DEBUG("cl->destPort: %d", cl->destPort);
}
cl->appData.useRemoteCursor = (
remmina_plugin_service->file_get_int(remminafile, "showcursor", FALSE) ? FALSE : TRUE);
remmina_plugin_vnc_update_quality(cl, quality);
remmina_plugin_vnc_update_colordepth(cl, colordepth);
if ((cl->format.depth == 8) && (quality == 9))
cl->appData.encodingsString = "copyrect zlib hextile raw";
else if ((cl->format.depth == 8) && (quality == 2))
cl->appData.encodingsString = "zrle ultra copyrect hextile zlib corre rre raw";
else if ((cl->format.depth == 8) && (quality == 1))
cl->appData.encodingsString = "zrle ultra copyrect hextile zlib corre rre raw";
else if ((cl->format.depth == 8) && (quality == 0))
cl->appData.encodingsString = "zrle ultra copyrect hextile zlib corre rre raw";
SetFormatAndEncodings(cl);
if (remmina_plugin_service->file_get_int(remminafile, "disableencryption", FALSE)) {
vnc_encryption_disable_requested = TRUE;
SetClientAuthSchemes(cl, remmina_plugin_vnc_no_encrypt_auth_types, -1);
} else {
vnc_encryption_disable_requested = FALSE;
}
if (rfbInitClient(cl, NULL, NULL)) {
REMMINA_PLUGIN_DEBUG("Client initialization successfull");
break;
} else {
REMMINA_PLUGIN_DEBUG("Client initialization failed");
}
/* If the authentication is not called, it has to be a fatal error and must quit */
if (!gpdata->auth_called) {
REMMINA_PLUGIN_DEBUG("Client not authenticated");
gpdata->connected = FALSE;
break;
}
/* vnc4server reports "already in use" after authentication. Workaround here */
if (strstr(vnc_error, "The server is already in use")) {
gpdata->connected = FALSE;
gpdata->auth_called = FALSE;
break;
}
/* Don't assume authentication failed for known network-related errors in
libvncclient/sockets.c. */
if (strstr(vnc_error, "read (") || strstr(vnc_error, "select\n") ||
strstr(vnc_error, "write\n") || strstr(vnc_error, "Connection timed out")) {
gpdata->connected = FALSE;
gpdata->auth_called = FALSE;
break;
}
/* Otherwise, it’s a password error. Try to clear saved password if any */
remmina_plugin_service->file_set_string(remminafile, "password", NULL);
if (!gpdata->connected)
break;
remmina_plugin_service->protocol_plugin_init_show_retry(gp);
/* It’s safer to sleep a while before reconnect */
sleep(2);
gpdata->auth_first = FALSE;
}
if (!gpdata->connected) {
REMMINA_PLUGIN_DEBUG("Client not connected with error: %s", vnc_error);
if (cl && !gpdata->auth_called && !(remmina_plugin_service->protocol_plugin_has_error(gp)))
remmina_plugin_service->protocol_plugin_set_error(gp, "%s", vnc_error);
gpdata->running = FALSE;
remmina_plugin_service->protocol_plugin_signal_connection_closed(gp);
return FALSE;
}
REMMINA_PLUGIN_DEBUG("Client connected");
remmina_plugin_service->protocol_plugin_init_save_cred(gp);
gpdata->client = cl;
remmina_plugin_service->protocol_plugin_signal_connection_opened(gp);
if (remmina_plugin_service->file_get_int(remminafile, "disableserverinput", FALSE))
PermitServerInput(cl, 1);
if (gpdata->thread) {
while (remmina_plugin_vnc_main_loop(gp)) {
}
gpdata->running = FALSE;
} else {
IDLE_ADD((GSourceFunc)remmina_plugin_vnc_main_loop, gp);
}
return FALSE;
}
static gpointer
remmina_plugin_vnc_main_thread(gpointer data)
{
TRACE_CALL(__func__);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
CANCEL_ASYNC
remmina_plugin_vnc_main((RemminaProtocolWidget *)data);
return NULL;
}
static RemminaPluginVncCoordinates remmina_plugin_vnc_scale_coordinates(GtkWidget *widget, RemminaProtocolWidget *gp, gint x, gint y)
{
GtkAllocation widget_allocation;
RemminaPluginVncCoordinates result;
if ((remmina_plugin_service->remmina_protocol_widget_get_current_scale_mode(gp) != REMMINA_PROTOCOL_WIDGET_SCALE_MODE_NONE)) {
gtk_widget_get_allocation(widget, &widget_allocation);
result.x = x * remmina_plugin_service->protocol_plugin_get_width(gp) / widget_allocation.width;
result.y = y * remmina_plugin_service->protocol_plugin_get_height(gp) / widget_allocation.height;
} else {
result.x = x;
result.y = y;
}
return result;
}
static gboolean remmina_plugin_vnc_on_motion(GtkWidget *widget, GdkEventMotion *event, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
RemminaPluginVncCoordinates coordinates;
if (!gpdata->connected || !gpdata->client)
return FALSE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "viewonly", FALSE))
return FALSE;
coordinates = remmina_plugin_vnc_scale_coordinates(widget, gp, event->x, event->y);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_POINTER, GINT_TO_POINTER(coordinates.x), GINT_TO_POINTER(coordinates.y),
GINT_TO_POINTER(gpdata->button_mask));
return TRUE;
}
static gboolean remmina_plugin_vnc_on_button(GtkWidget *widget, GdkEventButton *event, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
RemminaPluginVncCoordinates coordinates;
gint mask;
if (!gpdata->connected || !gpdata->client)
return FALSE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "viewonly", FALSE))
return FALSE;
/* We only accept 3 buttons */
if (event->button < 1 || event->button > 3)
return FALSE;
/* We bypass 2button-press and 3button-press events */
if (event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE)
return TRUE;
mask = (1 << (event->button - 1));
gpdata->button_mask = (event->type == GDK_BUTTON_PRESS ? (gpdata->button_mask | mask) :
(gpdata->button_mask & (0xff - mask)));
coordinates = remmina_plugin_vnc_scale_coordinates(widget, gp, event->x, event->y);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_POINTER, GINT_TO_POINTER(coordinates.x), GINT_TO_POINTER(coordinates.y),
GINT_TO_POINTER(gpdata->button_mask));
return TRUE;
}
static gint delta_to_mask(float delta, float *accum, gint mask_plus, gint mask_minus)
{
*accum += delta;
if (*accum >= 1.0) {
*accum = 0.0;
return mask_plus;
} else if (*accum <= -1.0) {
*accum = 0.0;
return mask_minus;
}
return 0;
}
static gboolean remmina_plugin_vnc_on_scroll(GtkWidget *widget, GdkEventScroll *event, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
RemminaPluginVncCoordinates coordinates;
gint mask;
if (!gpdata->connected || !gpdata->client)
return FALSE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "viewonly", FALSE))
return FALSE;
switch (event->direction) {
case GDK_SCROLL_UP:
mask = (1 << 3);
gpdata->scroll_y_accumulator = 0;
break;
case GDK_SCROLL_DOWN:
mask = (1 << 4);
gpdata->scroll_y_accumulator = 0;
break;
case GDK_SCROLL_LEFT:
mask = (1 << 5);
gpdata->scroll_x_accumulator = 0;
break;
case GDK_SCROLL_RIGHT:
mask = (1 << 6);
gpdata->scroll_x_accumulator = 0;
break;
#if GTK_CHECK_VERSION(3, 4, 0)
case GDK_SCROLL_SMOOTH:
/* RFB does not seems to support SMOOTH scroll, so we accumulate GTK delta requested
* up to 1.0 and then send a normal RFB wheel scroll when the accumulator reaches 1.0 */
mask = delta_to_mask(event->delta_y, &(gpdata->scroll_y_accumulator), (1 << 4), (1 << 3));
mask |= delta_to_mask(event->delta_x, &(gpdata->scroll_x_accumulator), (1 << 6), (1 << 5));
if (!mask)
return FALSE;
break;
#endif
default:
return FALSE;
}
coordinates = remmina_plugin_vnc_scale_coordinates(widget, gp, event->x, event->y);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_POINTER, GINT_TO_POINTER(coordinates.x), GINT_TO_POINTER(coordinates.y),
GINT_TO_POINTER(mask | gpdata->button_mask));
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_POINTER, GINT_TO_POINTER(coordinates.x), GINT_TO_POINTER(coordinates.y),
GINT_TO_POINTER(gpdata->button_mask));
return TRUE;
}
static void remmina_plugin_vnc_release_key(RemminaProtocolWidget *gp, guint16 keycode)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaKeyVal *k;
gint i;
if (!gpdata)
return;
if (keycode == 0) {
/* Send all release key events for previously pressed keys */
for (i = 0; i < gpdata->pressed_keys->len; i++) {
k = g_ptr_array_index(gpdata->pressed_keys, i);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_KEY, GUINT_TO_POINTER(k->keyval),
GINT_TO_POINTER(FALSE), NULL);
g_free(k);
}
g_ptr_array_set_size(gpdata->pressed_keys, 0);
} else {
/* Unregister the keycode only */
for (i = 0; i < gpdata->pressed_keys->len; i++) {
k = g_ptr_array_index(gpdata->pressed_keys, i);
if (k->keycode == keycode) {
g_free(k);
g_ptr_array_remove_index_fast(gpdata->pressed_keys, i);
break;
}
}
}
}
static gboolean remmina_plugin_vnc_on_key(GtkWidget *widget, GdkEventKey *event, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
RemminaKeyVal *k;
guint event_keyval;
guint keyval;
if (!gpdata->connected || !gpdata->client)
return FALSE;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "viewonly", FALSE))
return FALSE;
gpdata->scroll_x_accumulator = 0;
gpdata->scroll_y_accumulator = 0;
/* When sending key release, try first to find out a previously sent keyval
* to workaround bugs like https://bugs.freedesktop.org/show_bug.cgi?id=7430 */
event_keyval = event->keyval;
if (event->type == GDK_KEY_RELEASE) {
for (int i = 0; i < gpdata->pressed_keys->len; i++) {
k = g_ptr_array_index(gpdata->pressed_keys, i);
if (k->keycode == event->hardware_keycode) {
event_keyval = k->keyval;
break;
}
}
}
keyval = remmina_plugin_service->pref_keymap_get_keyval(remmina_plugin_service->file_get_string(remminafile, "keymap"),
event_keyval);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_KEY, GUINT_TO_POINTER(keyval),
GINT_TO_POINTER(event->type == GDK_KEY_PRESS ? TRUE : FALSE), NULL);
/* Register/unregister the pressed key */
if (event->type == GDK_KEY_PRESS) {
k = g_new(RemminaKeyVal, 1);
k->keyval = keyval;
k->keycode = event->hardware_keycode;
g_ptr_array_add(gpdata->pressed_keys, k);
} else {
remmina_plugin_vnc_release_key(gp, event->hardware_keycode);
}
return TRUE;
}
static void remmina_plugin_vnc_on_cuttext_request(GtkClipboard *clipboard, const gchar *text, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
GDateTime *t;
glong diff;
gsize br, bw;
gchar *latin1_text;
const char *cur_charset;
if (text) {
/* A timer (1 second) to avoid clipboard "loopback": text cut out from VNC won’t paste back into VNC */
t = g_date_time_new_now_utc();
diff = g_date_time_difference(t, gpdata->clipboard_timer) / 100000; // tenth of second
if (diff < 10)
return;
g_date_time_unref(gpdata->clipboard_timer);
gpdata->clipboard_timer = t;
/* Convert text from current charset to latin-1 before sending to remote server.
* See RFC6143 7.5.6 */
g_get_charset(&cur_charset);
latin1_text = g_convert_with_fallback(text, -1, "ISO-8859-1", cur_charset, "?", &br, &bw, NULL);
remmina_plugin_vnc_event_push(gp, REMMINA_PLUGIN_VNC_EVENT_CUTTEXT, (gpointer)latin1_text, NULL, NULL);
g_free(latin1_text);
}
}
static void remmina_plugin_vnc_on_cuttext(GtkClipboard *clipboard, GdkEvent *event, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
if (!gpdata->connected || !gpdata->client)
return;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "viewonly", FALSE))
return;
gtk_clipboard_request_text(clipboard, (GtkClipboardTextReceivedFunc)remmina_plugin_vnc_on_cuttext_request, gp);
}
static void remmina_plugin_vnc_on_realize(RemminaProtocolWidget *gp, gpointer data)
{
TRACE_CALL(__func__);
RemminaFile *remminafile;
GdkCursor *cursor;
GdkPixbuf *pixbuf;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
if (remmina_plugin_service->file_get_int(remminafile, "showcursor", FALSE)) {
/* Hide local cursor (show a small dot instead) */
pixbuf = gdk_pixbuf_new_from_xpm_data(dot_cursor_xpm);
cursor = gdk_cursor_new_from_pixbuf(gdk_display_get_default(), pixbuf, dot_cursor_x_hot, dot_cursor_y_hot);
g_object_unref(pixbuf);
gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(gp)), cursor);
g_object_unref(cursor);
}
}
/******************************************************************************************/
static gboolean remmina_plugin_vnc_open_connection(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
gpdata->connected = TRUE;
gchar *server;
gint port;
const gchar* raw_server;
remmina_plugin_service->protocol_plugin_register_hostkey(gp, gpdata->drawing_area);
g_signal_connect(G_OBJECT(gp), "realize", G_CALLBACK(remmina_plugin_vnc_on_realize), NULL);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "motion-notify-event", G_CALLBACK(remmina_plugin_vnc_on_motion), gp);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "button-press-event", G_CALLBACK(remmina_plugin_vnc_on_button), gp);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "button-release-event", G_CALLBACK(remmina_plugin_vnc_on_button), gp);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "scroll-event", G_CALLBACK(remmina_plugin_vnc_on_scroll), gp);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "key-press-event", G_CALLBACK(remmina_plugin_vnc_on_key), gp);
g_signal_connect(G_OBJECT(gpdata->drawing_area), "key-release-event", G_CALLBACK(remmina_plugin_vnc_on_key), gp);
if (!remmina_plugin_service->file_get_int(remminafile, "disableclipboard", FALSE))
gpdata->clipboard_handler = g_signal_connect(G_OBJECT(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD)),
"owner-change", G_CALLBACK(remmina_plugin_vnc_on_cuttext), gp);
if (pthread_create(&gpdata->thread, NULL, remmina_plugin_vnc_main_thread, gp)) {
/* I don’t think this will ever happen… */
g_print("Could not initialize pthread. Falling back to non-thread mode…\n");
g_timeout_add(0, (GSourceFunc)remmina_plugin_vnc_main, gp);
gpdata->thread = 0;
}
raw_server = remmina_plugin_service->file_get_string(remminafile, "server");
if (raw_server && strstr(raw_server, "unix://") == raw_server) {
REMMINA_PLUGIN_AUDIT(_("Connected to %s via VNC"), server);
} else {
remmina_plugin_service->get_server_port(raw_server,
VNC_DEFAULT_PORT,
&server,
&port);
REMMINA_PLUGIN_AUDIT(_("Connected to %s:%d via VNC"), server, port);
g_free(server), server = NULL;
}
#if LIBVNCSERVER_CHECK_VERSION_VERSION(0, 9, 14)
remmina_plugin_service->protocol_plugin_unlock_dynres(gp);
#endif
return TRUE;
}
static gboolean remmina_plugin_vnc_close_connection_timeout(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gchar *server;
gint port;
RemminaFile *remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
remmina_plugin_service->get_server_port(remmina_plugin_service->file_get_string(remminafile, "server"),
VNC_DEFAULT_PORT,
&server,
&port);
REMMINA_PLUGIN_AUDIT(_("Disconnected from %s:%d via VNC"), server, port);
g_free(server), server = NULL;
/* wait until the running attribute is set to false by the VNC thread */
if (gpdata->running)
return TRUE;
/* unregister the clipboard monitor */
if (gpdata->clipboard_handler) {
g_signal_handler_disconnect(G_OBJECT(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD)), gpdata->clipboard_handler);
gpdata->clipboard_handler = 0;
}
if (gpdata->queuecursor_handler) {
g_source_remove(gpdata->queuecursor_handler);
gpdata->queuecursor_handler = 0;
}
if (gpdata->queuecursor_surface) {
cairo_surface_destroy(gpdata->queuecursor_surface);
gpdata->queuecursor_surface = NULL;
}
if (gpdata->queuedraw_handler) {
g_source_remove(gpdata->queuedraw_handler);
gpdata->queuedraw_handler = 0;
}
if (gpdata->listen_sock >= 0)
close(gpdata->listen_sock);
if (gpdata->client) {
rfbClientCleanup((rfbClient *)gpdata->client);
gpdata->client = NULL;
}
if (gpdata->rgb_buffer) {
cairo_surface_destroy(gpdata->rgb_buffer);
gpdata->rgb_buffer = NULL;
}
if (gpdata->vnc_buffer) {
g_free(gpdata->vnc_buffer);
gpdata->vnc_buffer = NULL;
}
g_ptr_array_free(gpdata->pressed_keys, TRUE);
g_date_time_unref(gpdata->clipboard_timer);
remmina_plugin_vnc_event_free_all(gp);
g_queue_free(gpdata->vnc_event_queue);
pthread_mutex_destroy(&gpdata->vnc_event_queue_mutex);
close(gpdata->vnc_event_pipe[0]);
close(gpdata->vnc_event_pipe[1]);
pthread_mutex_destroy(&gpdata->buffer_mutex);
remmina_plugin_service->protocol_plugin_signal_connection_closed(gp);
return FALSE;
}
static gboolean remmina_plugin_vnc_close_connection(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
gpdata->connected = FALSE;
if (gpdata->thread) {
pthread_cancel(gpdata->thread);
if (gpdata->thread) pthread_join(gpdata->thread, NULL);
gpdata->running = FALSE;
remmina_plugin_vnc_close_connection_timeout(gp);
} else {
g_timeout_add(200, (GSourceFunc)remmina_plugin_vnc_close_connection_timeout, gp);
}
return FALSE;
}
static gboolean remmina_plugin_vnc_query_feature(RemminaProtocolWidget *gp, const RemminaProtocolFeature *feature)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
switch (feature->id) {
case REMMINA_PLUGIN_VNC_FEATURE_PREF_DISABLESERVERINPUT:
return SupportsClient2Server((rfbClient *)(gpdata->client), rfbSetServerInput) ? TRUE : FALSE;
case REMMINA_PLUGIN_VNC_FEATURE_TOOL_CHAT:
return SupportsClient2Server((rfbClient *)(gpdata->client), rfbTextChat) ? TRUE : FALSE;
default:
return TRUE;
}
}
static void remmina_plugin_vnc_call_feature(RemminaProtocolWidget *gp, const RemminaProtocolFeature *feature)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
RemminaFile *remminafile;
rfbClient* client;
uint8_t previous_bpp;
remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
switch (feature->id) {
case REMMINA_PLUGIN_VNC_FEATURE_PREF_QUALITY:
remmina_plugin_vnc_update_quality((rfbClient *)(gpdata->client),
remmina_plugin_service->file_get_int(remminafile, "quality", 9));
remmina_plugin_vnc_update_colordepth((rfbClient *)(gpdata->client),
remmina_plugin_service->file_get_int(remminafile, "colordepth", 32));
SetFormatAndEncodings((rfbClient *)(gpdata->client));
break;
case REMMINA_PLUGIN_VNC_FEATURE_PREF_COLOR:
client = (rfbClient *)(gpdata->client);
previous_bpp = client->format.bitsPerPixel;
remmina_plugin_vnc_update_colordepth(client,
remmina_plugin_service->file_get_int(remminafile, "colordepth", 32));
SetFormatAndEncodings(client);
//Need to clear away old and reallocate if we're increasing bpp
if (client->format.bitsPerPixel > previous_bpp){
remmina_plugin_vnc_rfb_allocfb((rfbClient *)(gpdata->client));
SendFramebufferUpdateRequest((rfbClient *)(gpdata->client), 0, 0,
remmina_plugin_service->protocol_plugin_get_width(gp),
remmina_plugin_service->protocol_plugin_get_height(gp), FALSE);
}
break;
case REMMINA_PLUGIN_VNC_FEATURE_PREF_VIEWONLY:
break;
case REMMINA_PLUGIN_VNC_FEATURE_PREF_DISABLESERVERINPUT:
PermitServerInput((rfbClient *)(gpdata->client),
remmina_plugin_service->file_get_int(remminafile, "disableserverinput", FALSE) ? 1 : 0);
break;
case REMMINA_PLUGIN_VNC_FEATURE_UNFOCUS:
remmina_plugin_vnc_release_key(gp, 0);
break;
case REMMINA_PLUGIN_VNC_FEATURE_SCALE:
remmina_plugin_vnc_update_scale(gp, remmina_plugin_service->file_get_int(remminafile, "scale", FALSE));
break;
case REMMINA_PLUGIN_VNC_FEATURE_TOOL_REFRESH:
SendFramebufferUpdateRequest((rfbClient *)(gpdata->client), 0, 0,
remmina_plugin_service->protocol_plugin_get_width(gp),
remmina_plugin_service->protocol_plugin_get_height(gp), FALSE);
break;
case REMMINA_PLUGIN_VNC_FEATURE_TOOL_CHAT:
remmina_plugin_vnc_open_chat(gp);
break;
case REMMINA_PLUGIN_VNC_FEATURE_TOOL_SENDCTRLALTDEL:
remmina_plugin_vnc_send_ctrlaltdel(gp);
break;
default:
break;
}
}
/* Send a keystroke to the plugin window */
static void remmina_plugin_vnc_keystroke(RemminaProtocolWidget *gp, const guint keystrokes[], const gint keylen)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
remmina_plugin_service->protocol_plugin_send_keys_signals(gpdata->drawing_area,
keystrokes, keylen, GDK_KEY_PRESS | GDK_KEY_RELEASE);
return;
}
#if LIBVNCSERVER_CHECK_VERSION_VERSION(0, 9, 14)
static gboolean remmina_plugin_vnc_on_size_allocate(GtkWidget *widget, GtkAllocation *alloc, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaScaleMode scale_mode = remmina_plugin_service->remmina_protocol_widget_get_current_scale_mode(gp);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
if (scale_mode == REMMINA_PROTOCOL_WIDGET_SCALE_MODE_DYNRES){
char str[1024];
sprintf(str, "DEBUG: %d x %d", alloc->width, alloc->height);
TRACE_CALL(str);
if (gpdata->client){
rfbClient *cl;
SendExtDesktopSize(gpdata->client, alloc->width, alloc->height);
}
}
return TRUE;
}
#endif
static gboolean remmina_plugin_vnc_on_draw(GtkWidget *widget, cairo_t *context, RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata = GET_PLUGIN_DATA(gp);
cairo_surface_t *surface;
gint width, height;
GtkAllocation widget_allocation;
LOCK_BUFFER(FALSE);
surface = gpdata->rgb_buffer;
if (!surface) {
UNLOCK_BUFFER(FALSE);
return FALSE;
}
width = remmina_plugin_service->protocol_plugin_get_width(gp);
height = remmina_plugin_service->protocol_plugin_get_height(gp);
if ((remmina_plugin_service->remmina_protocol_widget_get_current_scale_mode(gp) != REMMINA_PROTOCOL_WIDGET_SCALE_MODE_NONE)) {
gtk_widget_get_allocation(widget, &widget_allocation);
cairo_scale(context,
(double)widget_allocation.width / width,
(double)widget_allocation.height / height);
}
cairo_rectangle(context, 0, 0, width, height);
cairo_set_source_surface(context, surface, 0, 0);
cairo_fill(context);
UNLOCK_BUFFER(FALSE);
return TRUE;
}
static void remmina_plugin_vnc_init(RemminaProtocolWidget *gp)
{
TRACE_CALL(__func__);
RemminaPluginVncData *gpdata;
gint flags;
gpdata = g_new0(RemminaPluginVncData, 1);
g_object_set_data_full(G_OBJECT(gp), "plugin-data", gpdata, g_free);
gboolean disable_smooth_scrolling = FALSE;
RemminaFile *remminafile = remmina_plugin_service->protocol_plugin_get_file(gp);
disable_smooth_scrolling = remmina_plugin_service->file_get_int(remminafile, "disablesmoothscrolling", FALSE);
REMMINA_PLUGIN_DEBUG("Disable smooth scrolling is set to %d", disable_smooth_scrolling);
gpdata->drawing_area = gtk_drawing_area_new();
gtk_widget_show(gpdata->drawing_area);
gtk_container_add(GTK_CONTAINER(gp), gpdata->drawing_area);
gtk_widget_add_events(
gpdata->drawing_area,
GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK | GDK_KEY_PRESS_MASK
| GDK_KEY_RELEASE_MASK
| GDK_SCROLL_MASK);
gtk_widget_set_can_focus(gpdata->drawing_area, TRUE);
if (!disable_smooth_scrolling) {
REMMINA_PLUGIN_DEBUG("Adding GDK_SMOOTH_SCROLL_MASK");
gtk_widget_add_events(gpdata->drawing_area, GDK_SMOOTH_SCROLL_MASK);
}
g_signal_connect(G_OBJECT(gpdata->drawing_area), "draw", G_CALLBACK(remmina_plugin_vnc_on_draw), gp);
#if LIBVNCSERVER_CHECK_VERSION_VERSION(0, 9, 14)
g_signal_connect(G_OBJECT(gpdata->drawing_area), "size-allocate", G_CALLBACK(remmina_plugin_vnc_on_size_allocate), gp);
#endif
gpdata->auth_first = TRUE;
gpdata->clipboard_timer = g_date_time_new_now_utc();
gpdata->listen_sock = -1;
gpdata->pressed_keys = g_ptr_array_new();
gpdata->vnc_event_queue = g_queue_new();
pthread_mutex_init(&gpdata->vnc_event_queue_mutex, NULL);
if (pipe(gpdata->vnc_event_pipe)) {
g_print("Error creating pipes.\n");
gpdata->vnc_event_pipe[0] = 0;
gpdata->vnc_event_pipe[1] = 0;
}
flags = fcntl(gpdata->vnc_event_pipe[0], F_GETFL, 0);
fcntl(gpdata->vnc_event_pipe[0], F_SETFL, flags | O_NONBLOCK);
pthread_mutex_init(&gpdata->buffer_mutex, NULL);
}
/* Array of key/value pairs for color depths */
static gpointer colordepth_list[] =
{
"32", N_("True colour (32 bpp)"),
"16", N_("High colour (16 bpp)"),
"8", N_("256 colours (8 bpp)"),
NULL
};
/* Array of key/value pairs for quality selection */
static gpointer quality_list[] =
{
"2", N_("Good"),
"9", N_("Best (slowest)"),
"1", N_("Medium"),
"0", N_("Poor (fastest)"),
NULL
};
static gchar repeater_tooltip[] =
N_("Connect to VNC using a repeater:\n"
" • The server field must contain the repeater ID, e.g. ID:123456789\n"
" • The repeater field have to be set to the repeater IP and port, like:\n"
" 10.10.10.12:5901\n"
" • From the remote VNC server, you will connect to\n"
" the repeater, e.g. with x11vnc:\n"
" x11vnc -connect repeater=ID:123456789+10.10.10.12:5500");
static gchar vnciport_tooltip[] =
N_("Listening for remote VNC connection:\n"
" • The “Listen on port” field is the port Remmina will listen to,\n"
" e.g. 8888\n"
" • From the remote VNC server, you will connect to\n"
" Remmina, e.g. with x11vnc:\n"
" x11vnc -display :0 -connect 192.168.1.36:8888");
static gchar vncencodings_tooltip[] =
N_("Overriding the pre-set VNC encoding quality:\n"
"\n"
" • “Poor (fastest)” sets encoding to “copyrect zlib hextile raw”\n"
" • “Medium” sets encoding to “tight zrle ultra copyrect hextile zlib corre rre raw”\n"
" • “Good” sets encoding to “tight zrle ultra copyrect hextile zlib corre rre raw”\n"
" • “Best (slowest)” sets encoding to “copyrect zrle ultra zlib hextile corre rre raw”");
/* Array of RemminaProtocolSetting for basic settings.
* Each item is composed by:
* a) RemminaProtocolSettingType for setting type
* b) Setting name
* c) Setting description
* d) Compact disposition
* e) Values for REMMINA_PROTOCOL_SETTING_TYPE_SELECT or REMMINA_PROTOCOL_SETTING_TYPE_COMBO
* f) Setting tooltip
* g) Validation data pointer, will be passed to the validation callback method.
* h) Validation callback method (Can be NULL. Every entry will be valid then.)
* use following prototype:
* gboolean mysetting_validator_method(gpointer key, gpointer value,
* gpointer validator_data);
* gpointer key is a gchar* containing the setting's name,
* gpointer value contains the value which should be validated,
* gpointer validator_data contains your passed data.
*/
static const RemminaProtocolSetting remmina_plugin_vnc_basic_settings[] =
{
{ REMMINA_PROTOCOL_SETTING_TYPE_SERVER, "server", NULL, FALSE, "_rfb._tcp", NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_TEXT, "proxy", N_("Repeater"), FALSE, NULL, repeater_tooltip, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_TEXT, "username", N_("Username"), FALSE, NULL, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_PASSWORD, "password", N_("User password"), FALSE, NULL, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_SELECT, "colordepth", N_("Colour depth"), FALSE, colordepth_list, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_SELECT, "quality", N_("Quality"), FALSE, quality_list, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_KEYMAP, "keymap", NULL, FALSE, NULL, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_END, NULL, NULL, FALSE, NULL, NULL, NULL, NULL }
};
// Same as above.
static const RemminaProtocolSetting remmina_plugin_vnci_basic_settings[] =
{
{ REMMINA_PROTOCOL_SETTING_TYPE_TEXT, "listenport", N_("Listen on port"), FALSE, NULL, vnciport_tooltip, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_TEXT, "username", N_("Username"), FALSE, NULL, NULL, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_PASSWORD, "password", N_("User password"), FALSE, NULL, NULL, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_SELECT, "colordepth", N_("Colour depth"), FALSE, colordepth_list, NULL, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_SELECT, "quality", N_("Quality"), FALSE, quality_list, NULL, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_KEYMAP, "keymap", NULL, FALSE, NULL, NULL, NULL, NULL},
{ REMMINA_PROTOCOL_SETTING_TYPE_END, NULL, NULL, FALSE, NULL, NULL, NULL, NULL}
};
/* Array of RemminaProtocolSetting for advanced settings.
* Each item is composed by:
* a) RemminaProtocolSettingType for setting type
* b) Setting name
* c) Setting description
* d) Compact disposition
* e) Values for REMMINA_PROTOCOL_SETTING_TYPE_SELECT or REMMINA_PROTOCOL_SETTING_TYPE_COMBO
* f) Setting Tooltip
*/
static const RemminaProtocolSetting remmina_plugin_vnc_advanced_settings[] =
{
{ REMMINA_PROTOCOL_SETTING_TYPE_TEXT, "encodings", N_("Override pre-set VNC encodings"), FALSE, NULL, vncencodings_tooltip },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "tightencoding", N_("Force tight encoding"), TRUE, NULL, N_("Enabling this may help when the remote desktop looks scrambled") },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disablesmoothscrolling", N_("Disable smooth scrolling"), FALSE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disablepasswordstoring", N_("Forget passwords after use"), TRUE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disableserverbell", N_("Ignore remote bell messages"), FALSE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disableserverinput", N_("Prevent local interaction on the server"), TRUE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "showcursor", N_("Show remote cursor"), FALSE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disableclipboard", N_("Turn off clipboard sync"), TRUE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "disableencryption", N_("Turn off encryption"), FALSE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_CHECK, "viewonly", N_("View only"), TRUE, NULL, NULL },
{ REMMINA_PROTOCOL_SETTING_TYPE_END, NULL, NULL, FALSE, NULL, NULL }
};
/* Array for available features.
* The last element of the array must be REMMINA_PROTOCOL_FEATURE_TYPE_END. */
static const RemminaProtocolFeature remmina_plugin_vnc_features[] =
{
{ REMMINA_PROTOCOL_FEATURE_TYPE_PREF, REMMINA_PLUGIN_VNC_FEATURE_PREF_QUALITY, GINT_TO_POINTER(REMMINA_PROTOCOL_FEATURE_PREF_RADIO), "quality",
quality_list },
{ REMMINA_PROTOCOL_FEATURE_TYPE_PREF, REMMINA_PLUGIN_VNC_FEATURE_PREF_COLOR, GINT_TO_POINTER(REMMINA_PROTOCOL_FEATURE_PREF_RADIO), "colordepth",
colordepth_list },
{ REMMINA_PROTOCOL_FEATURE_TYPE_PREF, REMMINA_PLUGIN_VNC_FEATURE_PREF_VIEWONLY, GINT_TO_POINTER(REMMINA_PROTOCOL_FEATURE_PREF_CHECK), "viewonly",
N_("View only") },
{ REMMINA_PROTOCOL_FEATURE_TYPE_PREF, REMMINA_PLUGIN_VNC_FEATURE_PREF_DISABLESERVERINPUT, GINT_TO_POINTER(REMMINA_PROTOCOL_FEATURE_PREF_CHECK), "disableserverinput",N_("Prevent local interaction on the server") },
{ REMMINA_PROTOCOL_FEATURE_TYPE_TOOL, REMMINA_PLUGIN_VNC_FEATURE_TOOL_REFRESH, N_("Refresh"), NULL, NULL },
{ REMMINA_PROTOCOL_FEATURE_TYPE_TOOL, REMMINA_PLUGIN_VNC_FEATURE_TOOL_CHAT, N_("Open Chat…"), "face-smile", NULL },
{ REMMINA_PROTOCOL_FEATURE_TYPE_TOOL, REMMINA_PLUGIN_VNC_FEATURE_TOOL_SENDCTRLALTDEL, N_("Send Ctrl+Alt+Delete"), NULL, NULL },
{ REMMINA_PROTOCOL_FEATURE_TYPE_SCALE, REMMINA_PLUGIN_VNC_FEATURE_SCALE, NULL, NULL, NULL },
{ REMMINA_PROTOCOL_FEATURE_TYPE_UNFOCUS, REMMINA_PLUGIN_VNC_FEATURE_UNFOCUS, NULL, NULL, NULL },
#if LIBVNCSERVER_CHECK_VERSION_VERSION(0, 9, 14)
{ REMMINA_PROTOCOL_FEATURE_TYPE_DYNRESUPDATE, REMMINA_PLUGIN_VNC_FEATURE_DYNRESUPDATE, NULL, NULL, NULL },
#endif
{ REMMINA_PROTOCOL_FEATURE_TYPE_END, 0, NULL, NULL, NULL }
};
/* Protocol plugin definition and features */
static RemminaProtocolPlugin remmina_plugin_vnc =
{
REMMINA_PLUGIN_TYPE_PROTOCOL, // Type
VNC_PLUGIN_NAME, // Name
VNC_PLUGIN_DESCRIPTION, // Description
GETTEXT_PACKAGE, // Translation domain
VNC_PLUGIN_VERSION, // Version number
VNC_PLUGIN_APPICON, // Icon for normal connection
VNC_PLUGIN_SSH_APPICON, // Icon for SSH connection
remmina_plugin_vnc_basic_settings, // Array for basic settings
remmina_plugin_vnc_advanced_settings, // Array for advanced settings
REMMINA_PROTOCOL_SSH_SETTING_TUNNEL, // SSH settings type
remmina_plugin_vnc_features, // Array for available features
remmina_plugin_vnc_init, // Plugin initialization
remmina_plugin_vnc_open_connection, // Plugin open connection
remmina_plugin_vnc_close_connection, // Plugin close connection
remmina_plugin_vnc_query_feature, // Query for available features
remmina_plugin_vnc_call_feature, // Call a feature
remmina_plugin_vnc_keystroke // Send a keystroke
};
/* Protocol plugin definition and features */
static RemminaProtocolPlugin remmina_plugin_vnci =
{
REMMINA_PLUGIN_TYPE_PROTOCOL, // Type
VNCI_PLUGIN_NAME, // Name
VNCI_PLUGIN_DESCRIPTION, // Description
GETTEXT_PACKAGE, // Translation domain
VERSION, // Version number
VNCI_PLUGIN_APPICON, // Icon for normal connection
VNCI_PLUGIN_SSH_APPICON, // Icon for SSH connection
remmina_plugin_vnci_basic_settings, // Array for basic settings
remmina_plugin_vnc_advanced_settings, // Array for advanced settings
REMMINA_PROTOCOL_SSH_SETTING_REVERSE_TUNNEL, // SSH settings type
remmina_plugin_vnc_features, // Array for available features
remmina_plugin_vnc_init, // Plugin initialization
remmina_plugin_vnc_open_connection, // Plugin open connection
remmina_plugin_vnc_close_connection, // Plugin close connection
remmina_plugin_vnc_query_feature, // Query for available features
remmina_plugin_vnc_call_feature, // Call a feature
remmina_plugin_vnc_keystroke, // Send a keystroke
NULL, // No screenshot support available
NULL, // RCW map event
NULL // RCW unmap event
};
G_MODULE_EXPORT gboolean
remmina_plugin_entry(RemminaPluginService *service)
{
TRACE_CALL(__func__);
remmina_plugin_service = service;
bindtextdomain(GETTEXT_PACKAGE, REMMINA_RUNTIME_LOCALEDIR);
bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
if (!service->register_plugin((RemminaPlugin *)&remmina_plugin_vnc))
return FALSE;
if (!service->register_plugin((RemminaPlugin *)&remmina_plugin_vnci))
return FALSE;
return TRUE;
}
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