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[client] spice: implemented guest -> client clipboard sync

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This commit is contained in:
Geoffrey McRae 2019-02-22 09:02:34 +11:00
parent 108369414e
commit 9dd4e4756b
1 changed files with 163 additions and 31 deletions
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194
client/spice/spice.c
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@ -18,8 +18,6 @@ Place, Suite 330, Boston, MA 02111-1307 USA
*/
//#define DEBUG_SPICE
#include "spice.h"
#include "utils.h"
#include "debug.h"
@ -42,6 +40,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include <spice/protocol.h>
#include <spice/vd_agent.h>
#include <SDL2/SDL.h>
#include "messages.h"
#include "rsa.h"
@ -57,7 +57,10 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#define DEBUG_KEYBOARD(fmt, args...) do {} while(0)
#endif
#define SPICE_AGENT_TOKENS_MAX 10
// we don't really need flow control because we are all local
// instead do what the spice-gtk library does and provide the largest
// possible number
#define SPICE_AGENT_TOKENS_MAX ~0
// ============================================================================
@ -103,7 +106,8 @@ struct Spice
union SpiceAddr addr;
bool hasAgent;
uint32_t agentTokens;
uint32_t serverTokens;
uint32_t clientTokens;
uint32_t sessionID;
uint32_t channelID;
struct SpiceChannel scMain;
@ -111,6 +115,9 @@ struct Spice
struct SpiceKeyboard kb;
struct SpiceMouse mouse;
bool cbSupported;
bool cbSelection;
};
// globals
@ -418,7 +425,7 @@ bool spice_on_main_channel_read()
spice.sessionID = msg.session_id;
spice.agentTokens = msg.agent_tokens;
spice.serverTokens = msg.agent_tokens;
spice.hasAgent = msg.agent_connected;
if (spice.hasAgent && !spice_agent_connect())
{
@ -515,7 +522,7 @@ bool spice_on_main_channel_read()
}
spice.hasAgent = true;
spice.agentTokens = num_tokens;
spice.serverTokens = num_tokens;
if (!spice_agent_connect())
{
DEBUG_ERROR("failed to connect to spice agent");
@ -849,8 +856,8 @@ bool spice_agent_connect()
{
DEBUG_INFO("Spice agent available, sending start");
const uint32_t tokens = SPICE_AGENT_TOKENS_MAX;
if (!spice_write_msg(&spice.scMain, SPICE_MSGC_MAIN_AGENT_START, &tokens, sizeof(tokens)))
spice.clientTokens = SPICE_AGENT_TOKENS_MAX;
if (!spice_write_msg(&spice.scMain, SPICE_MSGC_MAIN_AGENT_START, &spice.clientTokens, sizeof(spice.clientTokens)))
{
DEBUG_ERROR("failed to send agent start message");
return false;
@ -868,6 +875,14 @@ bool spice_agent_process()
{
VDAgentMessage msg;
#pragma pack(push,1)
struct Selection
{
uint8_t selection;
uint8_t reserved[3];
};
#pragma pack(pop)
if (!spice_read_nl(&spice.scMain, &msg, sizeof(msg)))
{
DEBUG_ERROR("failed to read spice agent message");
@ -880,40 +895,157 @@ bool spice_agent_process()
return false;
}
if (msg.type == VD_AGENT_ANNOUNCE_CAPABILITIES)
switch(msg.type)
{
VDAgentAnnounceCapabilities *caps = (VDAgentAnnounceCapabilities *)malloc(msg.size);
memset(caps, 0, msg.size);
if (!spice_read_nl(&spice.scMain, caps, msg.size))
case VD_AGENT_ANNOUNCE_CAPABILITIES:
{
DEBUG_ERROR("failed to read agent message payload");
VDAgentAnnounceCapabilities *caps = (VDAgentAnnounceCapabilities *)malloc(msg.size);
memset(caps, 0, msg.size);
if (!spice_read_nl(&spice.scMain, caps, msg.size))
{
DEBUG_ERROR("failed to read agent message payload");
free(caps);
return false;
}
const int capsSize = VD_AGENT_CAPS_SIZE_FROM_MSG_SIZE(msg.size);
spice.cbSupported = VD_AGENT_HAS_CAPABILITY(caps->caps, capsSize, VD_AGENT_CAP_CLIPBOARD_BY_DEMAND) ||
VD_AGENT_HAS_CAPABILITY(caps->caps, capsSize, VD_AGENT_CAP_CLIPBOARD_SELECTION);
spice.cbSelection = VD_AGENT_HAS_CAPABILITY(caps->caps, capsSize, VD_AGENT_CAP_CLIPBOARD_SELECTION);
if (spice.cbSupported)
DEBUG_INFO("clipboard capability detected");
if (caps->request && !spice_agent_send_caps(false))
{
free(caps);
return false;
}
free(caps);
return false;
return true;
}
const int capsSize = VD_AGENT_CAPS_SIZE_FROM_MSG_SIZE(msg.size);
if (VD_AGENT_HAS_CAPABILITY(caps->caps, capsSize, VD_AGENT_CAP_CLIPBOARD_BY_DEMAND))
case VD_AGENT_CLIPBOARD:
case VD_AGENT_CLIPBOARD_REQUEST:
case VD_AGENT_CLIPBOARD_GRAB:
case VD_AGENT_CLIPBOARD_RELEASE:
{
DEBUG_INFO("clipboard capability detected");
uint32_t remaining = msg.size;
if (spice.cbSelection)
{
struct Selection selection;
if (!spice_read_nl(&spice.scMain, &selection, sizeof(selection)))
{
DEBUG_ERROR("failed to read the clipboard selection");
return false;
}
remaining -= sizeof(selection);
}
if (msg.type == VD_AGENT_CLIPBOARD_RELEASE)
{
DEBUG_PROTO("VD_AGENT_CLIPBOARD_RELEASE");
return true;
}
if (msg.type == VD_AGENT_CLIPBOARD || msg.type == VD_AGENT_CLIPBOARD_REQUEST)
{
uint32_t type;
if (!spice_read_nl(&spice.scMain, &type, sizeof(type)))
{
DEBUG_ERROR("failed to read the clipboard data type");
return false;
}
remaining -= sizeof(type);
if (msg.type == VD_AGENT_CLIPBOARD)
{
DEBUG_PROTO("VD_AGENT_CLIPBOARD");
if (type != VD_AGENT_CLIPBOARD_UTF8_TEXT)
{
DEBUG_ERROR("for some reason we were sent a non text clipboard, this shouldn't happen");
return false;
}
char * text = malloc(remaining + 1);
if (!spice_read_nl(&spice.scMain, text, remaining))
{
DEBUG_ERROR("failed to read the clipboard data");
free(text);
return false;
}
text[remaining] = '\0';
// dos2unix
char * out = malloc(remaining + 1);
char * p = out;
for(uint32_t i = 0; i < remaining; ++i)
{
char c = text[i];
if (c != '\r')
*p++ = c;
}
*p = '\0';
SDL_SetClipboardText(out);
free(text);
return true;
}
else
{
DEBUG_PROTO("VD_AGENT_CLIPBOARD_REQUEST");
return true;
}
}
else
{
DEBUG_PROTO("VD_AGENT_CLIPBOARD_GRAB");
if (remaining == 0)
return true;
uint32_t *types = malloc(remaining);
if (!spice_read_nl(&spice.scMain, types, remaining))
{
DEBUG_ERROR("failed to read the clipboard grab types");
return false;
}
// there is zero documentation on the types field, it might be a bitfield
// but for now we are going to assume it's not.
// for now we only support text
if (types[0] == VD_AGENT_CLIPBOARD_UTF8_TEXT)
{
if (spice.cbSelection)
{
// Windows doesnt support this, so until it's needed no point messing with it
DEBUG_ERROR("Fixme!");
return false;
}
VDAgentClipboardRequest req;
req.type = VD_AGENT_CLIPBOARD_UTF8_TEXT;
if (!spice_agent_write_msg(VD_AGENT_CLIPBOARD_REQUEST, &req, sizeof(req)))
{
DEBUG_ERROR("failed to request clipboard data");
free(types);
return false;
}
return true;
}
free(types);
return true;
}
}
else
DEBUG_INFO("no clipboard capability detected");
if (caps->request && !spice_agent_send_caps(false))
{
free(caps);
return false;
}
free(caps);
return true;
}
DEBUG_WARN("unknown agent message type %d", msg.type);
spice_discard_nl(&spice.scMain, msg.size);
return true;
}