VNC: Finish v3.3 negotiation
This commit is contained in:
Gregory Nutt
parent
347cb97c92
commit
f3ad4ae1d1
@ -41,6 +41,26 @@ config VNCSERVER_STACKSIZE
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int "VNC server stack size"
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default 2048
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choice
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prompt "VNC color format"
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default VNCSERVER_COLORFMT_RGB16
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config VNCSERVER_COLORFMT_RGB16
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bool "RGB16 5:6:5"
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config VNCSERVER_COLORFMT_RGB32
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bool "RGB24 (32-bit) or RGB32 (w/tranparency)"
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endchoice # VNC color format
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config VNCSERVER_SCREENWIDTH
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int "Framebuffer width (pixels)"
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default 320
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config VNCSERVER_SCREENHEIGHT
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int "Framebuffer height (rows)"
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default 240
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config VNCSERVER_KBDENCODE
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bool "Encode keyboard input"
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default n
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@ -50,15 +50,6 @@
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#include "vnc_server.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Framebuffer characteristics in bytes */
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#define FB_WIDTH(s) (((s)->screen.w * (s)->bpp + 7) / 8)
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#define FB_SIZE(s) (FB_WIDTH(s) * (s)->screen.h)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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@ -207,8 +198,8 @@ static int up_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
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DEBUGASSERT(session->fb != NULL);
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pinfo->fbmem = (FAR void *)&session->fb;
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pinfo->fblen = FB_SIZE(session);
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pinfo->stride = FB_WIDTH(session);
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pinfo->fblen = (uint32_t)session->stride * CONFIG_VNCSERVER_SCREENWIDTH;
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pinfo->stride = (fb_coord_t)session->stride;
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pinfo->bpp = session->bpp;
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return OK;
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@ -42,7 +42,11 @@
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/video/fb.h>
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#include <nuttx/video/rfb.h>
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#include "vnc_server.h"
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@ -57,28 +61,6 @@ static const char g_vncproto[] = RFB_PROTOCOL_VERSION_3p3;
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static const char g_vncproto[] = RFB_PROTOCOL_VERSION_3p8;
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nvc_xyz
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*
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* Description:
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* [Re-]initialize a VNC session
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*
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* Input Parameters:
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* session - the VNC session to be initialized
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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static void nvc_xyz(FAR struct vnc_session_s *session)
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{
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@ -103,59 +85,258 @@ static void nvc_xyz(FAR struct vnc_session_s *session)
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#ifdef CONFIG_VNCSERVER_PROTO3p3
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int vnc_negotiate(FAR struct vnc_session_s *session)
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{
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FAR struct rfb_sectype_s *sectype;
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FAR struct rfb_serverinit_s *serverinit;
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FAR struct rfb_pixelfmt_s *pixelfmt;
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FAR struct rfb_setpixelformat_s *setformat;
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ssize_t nsent;
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ssize_t nrecvd;
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size_t alloc;
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size_t len;
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int errcode;
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/* Inform the client of the VNC protocol */
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/* Inform the client of the VNC protocol version */
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len = strlen(g_vncproto);
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nrecvd = psock_send(&session->connect, g_vncproto, len, 0);
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if (nrecvd < 0)
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nsent = psock_send(&session->connect, g_vncproto, len, 0);
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if (nsent < 0)
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{
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goto errout_with_errno;
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errcode = get_errno();
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gdbg("ERROR: Send ProtocolVersion failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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DEBUGASSERT(nsent == len);
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/* Receive the echo of the protocol string */
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nrecvd = psock_recv(&session->connect, session->iobuf, len, 0);
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if (nrecvd <= 0)
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{
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goto errout_with_errno;
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errcode = get_errno();
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gdbg("ERROR: Receive protocol confirmation failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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/* Tell the client that we won't use any stinkin' security */
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DEBUGASSERT(nrecvd == len);
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/* Tell the client that we won't use any stinkin' security.
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*
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* "Version 3.3 The server decides the security type and sends a single
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* word:"
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*/
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sectype = (FAR struct rfb_sectype_s *)session->iobuf;
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rfb_putbe32(sectype->type, RFB_SECTYPE_NONE);
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nsent = psock_send(&session->connect, sectype,
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sizeof(struct rfb_sectype_s), 0);
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if (nsent < 0)
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{
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errcode = get_errno();
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gdbg("ERROR: Send Security failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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DEBUGASSERT(nsent == sizeof(struct rfb_sectype_s));
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/* Receive the ClientInit message
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*
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* "Once the client and server are sure that they’re happy to talk to one
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* another using the agreed security type, the protocol passes to the
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* initialisation phase. The client sends a ClientInit message followed
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* by the server sending a ServerInit message."
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*
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* In this implementation, the sharing flag is ignored.
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*/
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nrecvd = psock_recv(&session->connect, session->iobuf,
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sizeof(struct rfb_clientinit_s), 0);
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if (nrecvd < 0)
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{
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errcode = get_errno();
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gdbg("ERROR: Receive ClientInit failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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DEBUGASSERT(nrecvd == sizeof(struct rfb_clientinit_s));
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/* Send the ClientInit message
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*
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* "After receiving the ClientInit message, the server sends a ServerInit
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* message. This tells the client the width and height of the server’s
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* framebuffer, its pixel format and the name associated with the desktop:
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*/
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serverinit = (FAR struct rfb_serverinit_s *)session->iobuf;
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rfb_putbe16(serverinit->width, CONFIG_VNCSERVER_SCREENWIDTH);
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rfb_putbe16(serverinit->height, CONFIG_VNCSERVER_SCREENHEIGHT);
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rfb_putbe32(serverinit->namelen, 0);
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pixelfmt = &serverinit->format;
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pixelfmt->bpp = RFB_BITSPERPIXEL;
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pixelfmt->depth = RFB_PIXELDEPTH;
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pixelfmt->bigendian = 0;
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pixelfmt->truecolor = RFB_TRUECOLOR;
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rfb_putbe16(pixelfmt->rmax, RFB_RMAX);
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rfb_putbe16(pixelfmt->gmax, RFB_GMAX);
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rfb_putbe16(pixelfmt->bmax, RFB_BMAX);
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pixelfmt->rshift = RFB_RSHIFT;
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pixelfmt->gshift = RFB_GSHIFT;
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pixelfmt->bshift = RFB_BSHIFT;
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nsent = psock_send(&session->connect, serverinit,
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SIZEOF_RFB_SERVERINIT_S(0), 0);
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if (nsent < 0)
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{
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errcode = get_errno();
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gdbg("ERROR: Send ServerInit failed: %d\n", errcode);
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return -errcode;
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}
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DEBUGASSERT(nsent == SIZEOF_RFB_SERVERINIT_S(0));
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/* We now expect to receive the SetPixelFormat message from the client.
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* This may override some of our framebuffer settings.
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*/
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setformat = (FAR struct rfb_setpixelformat_s *)session->iobuf;
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nrecvd = psock_recv(&session->connect, setformat,
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sizeof(struct rfb_setpixelformat_s), 0);
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if (nrecvd < 0)
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{
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errcode = get_errno();
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gdbg("ERROR: Receive SetFormat failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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else if (nrecvd != sizeof(struct rfb_setpixelformat_s))
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{
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/* Must not be a SetPixelFormat message? */
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gdbg("ERROR: SetFormat wrong size: %d\n", (int)nrecvd);
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return -EPROTO;
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}
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else if (setformat->msgtype != RFB_SETPIXELFMT_MSG)
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{
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gdbg("ERROR: Not a SetFormat message: %d\n", (int)setformat->type);
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return -EPROTO;
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}
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/* Check if the client request format is one that we can handle. */
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pixelfmt = &setformat->format;
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if (pixelfmt->truecolor == 0)
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{
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/* At present, we support only TrueColor formats */
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gdbg("ERROR: No support for palette colors\n");
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return -ENOSYS;
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}
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if (pixelfmt->bpp == 16 && pixelfmt->depth == 15)
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{
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session->colorfmt = FB_FMT_RGB16_555;
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session->bpp = 16;
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}
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else if (pixelfmt->bpp == 16 && pixelfmt->depth == 16)
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{
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session->colorfmt = FB_FMT_RGB16_565;
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session->bpp = 16;
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}
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else if (pixelfmt->bpp == 32 && pixelfmt->depth == 24)
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{
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session->colorfmt = FB_FMT_RGB32;
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session->bpp = 32;
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}
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else if (pixelfmt->bpp == 32 && pixelfmt->depth == 32)
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{
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session->colorfmt = FB_FMT_RGB32;
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session->bpp = 32;
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}
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else
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{
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/* We do not support any other conversions */
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gdbg("ERROR: No support for this BPP=%d and depth=%d\n",
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pixelfmt->bpp, pixelfmt->depth);
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return -ENOSYS;
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}
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session->screen.w = CONFIG_VNCSERVER_SCREENWIDTH;
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session->screen.h = CONFIG_VNCSERVER_SCREENHEIGHT;
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/* Now allocate the framebuffer memory */
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len = (session->bpp + 7) >> 3;
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session->stride = len * CONFIG_VNCSERVER_SCREENWIDTH;
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alloc = (size_t)session->stride * CONFIG_VNCSERVER_SCREENHEIGHT;
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session->fb = (FAR uint8_t *)kmm_zalloc(alloc);
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if (session->fb)
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{
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gdbg("ERROR: Failed to allocate framebuffer memory: %lu\n",
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(unsigned long)alloc);
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return -ENOMEM;
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}
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/* Receive supported encoding types from client, but ignore them.
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* we will do only raw format.
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*/
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(void)psock_recv(&session->connect, session->iobuf,
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CONFIG_VNCSERVER_IOBUFFER_SIZE, 0);
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session->state = VNCSERVER_CONFIGURED;
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return OK;
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errout_with_errno:
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errcode = get_errno();
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errout_with_errcode:
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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#endif
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#ifdef CONFIG_VNCSERVER_PROTO3p8
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int vnc_negotiate(FAR struct vnc_session_s *session)
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{
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ssize_t nbytes;
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ssize_t nsent;
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ssize_t nrecvd;
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size_t len;
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/* Inform the client of the VNC protocol */
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/* Inform the client of the VNC protocol version */
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len = strlen(g_vncproto);
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nrecvd = psock_send(&session->connect, g_vncproto, len, 0);
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if (nrecvd < 0)
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nsent = psock_send(&session->connect, g_vncproto, len, 0);
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if (nsent < 0)
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{
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goto errout_with_errno;
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errcode = get_errno();
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gdbg("ERROR: Send ProtocolVersion failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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DEBUGASSERT(nsent == len);
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/* Receive the echo of the protocol string */
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nrecvd = psock_recv(&session->connect, session->iobuf, len, 0);
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if (nrecvd <= 0)
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{
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goto errout_with_errno;
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errcode = get_errno();
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gdbg("ERROR: Receive protocol confirmation failed: %d\n", errcode);
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DEBUGASSERT(errcode > 0);
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return -errcode;
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}
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DEBUGASSERT(nrecvd == len);
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/* Offer the client a choice of security -- where None is the only option. */
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#warning Missing logic
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return OK;
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}
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@ -67,6 +67,38 @@
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# define CONFIG_VNCSERVER_NDISPLAYS 1
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#endif
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#if defined(CONFIG_VNCSERVER_COLORFMT_RGB16)
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# define RFB_BITSPERPIXEL 16
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# define RFB_PIXELDEPTH 16
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# define RFB_TRUECOLOR 1
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# define RFB_RMAX 0x1f
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# define RFB_GMAX 0x3f
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# define RFB_BMAX 0x1f
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# define RFB_RSHIFT 11
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# define RFB_GSHIFT 5
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# define RFB_BSHIFT 0
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#elif defined(CONFIG_VNCSERVER_COLORFMT_RGB32)
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# define RFB_BITSPERPIXEL 32
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# define RFB_PIXELDEPTH 24
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# define RFB_TRUECOLOR 1
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# define RFB_RMAX 0xff
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# define RFB_GMAX 0xff
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# define RFB_BMAX 0xff
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# define RFB_RSHIFT 16
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# define RFB_GSHIFT 8
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# define RFB_BSHIFT 0
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#else
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# error Unspecified color format
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#endif
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#ifndef CONFIG_VNCSERVER_SCREENWIDTH
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# define CONFIG_VNCSERVER_SCREENWIDTH 320
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#endif
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#ifndef CONFIG_VNCSERVER_SCREENHEIGHT
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# define CONFIG_VNCSERVER_SCREENHEIGHT 240
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#endif
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#ifndef CONFIG_VNCSERVER_PRIO
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# define CONFIG_VNCSERVER_PRIO 100
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#endif
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@ -88,11 +120,11 @@
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/* Miscellaneous */
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#ifndef MIN
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# define MIN(a,b) (((a) < (b)) ? (a) : (b))
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# define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef MAX
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# define MAX(a,b) (((a) > (b)) ? (a) : (b))
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# define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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/****************************************************************************
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@ -127,6 +159,7 @@ struct vnc_session_s
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uint8_t colorfmt; /* See include/nuttx/fb.h */
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uint8_t bpp; /* Bits per pixel */
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size_t stride; /* Width of a row in bytes */
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struct nxgl_size_s screen; /* Size of the screen in pixels x rows */
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FAR uint8_t *fb; /* Allocated local frame buffer */
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