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e16/src/comms.c

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/*
* Copyright (C) 2000-2005 Carsten Haitzler, Geoff Harrison and various contributors
* Copyright (C) 2004-2005 Kim Woelders
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of the Software, its documentation and marketing & publicity
* materials, and acknowledgment shall be given in the documentation, materials
* and software packages that this Software was used.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "E.h"
struct _client
{
char *name;
Window win;
char *msg;
char *clientname;
char *version;
char *info;
char replied;
};
static Window comms_win = 0;
static Atom XA_ENLIGHTENMENT_COMMS = 0;
static Atom XA_ENL_MSG = 0;
static void ClientHandleEvents(XEvent * ev, void *cc);
static Client *
ClientCreate(Window win)
{
Client *c;
char st[32];
c = Ecalloc(1, sizeof(Client));
if (!c)
return NULL;
Esnprintf(st, sizeof(st), "%8x", (int)win);
c->name = Estrdup(st);
c->win = win;
ERegisterWindow(win);
EventCallbackRegister(win, 0, ClientHandleEvents, c);
AddItem(c, st, win, LIST_TYPE_CLIENT);
XSelectInput(disp, win, StructureNotifyMask | SubstructureNotifyMask);
return c;
}
static void
ClientDestroy(Client * c)
{
Window win;
if (!c)
return;
win = c->win;
RemoveItem(NULL, win, LIST_FINDBY_ID, LIST_TYPE_CLIENT);
EventCallbackUnregister(win, 0, ClientHandleEvents, c);
EUnregisterWindow(win);
if (c->name)
Efree(c->name);
if (c->msg)
Efree(c->msg);
if (c->clientname)
Efree(c->clientname);
if (c->version)
Efree(c->version);
if (c->info)
Efree(c->info);
Efree(c);
}
static int
ClientConfigure(Client * c, const char *str)
{
char param[64];
const char *value;
int len;
len = 0;
sscanf(str, "%*s %60s %n", param, &len);
value = str + len;
if (!strcmp(param, "clientname"))
{
if (c->clientname)
Efree(c->clientname);
c->clientname = Estrdup(value);
}
else if (!strcmp(param, "version"))
{
if (c->version)
Efree(c->version);
c->version = Estrdup(value);
}
else if (!strcmp(param, "author"))
{
}
else if (!strcmp(param, "email"))
{
}
else if (!strcmp(param, "web"))
{
}
else if (!strcmp(param, "address"))
{
}
else if (!strcmp(param, "info"))
{
if (c->info)
Efree(c->info);
c->info = Estrdup(value);
}
else if (!strcmp(param, "pixmap"))
{
}
else
{
return -1;
}
return 0;
}
static char *
ClientCommsGet(Client ** c, XClientMessageEvent * ev)
{
char s[13], s2[9], *msg;
int i;
Window win = 0;
Client *cl;
if ((!ev) || (!c))
return NULL;
if (ev->message_type != XA_ENL_MSG)
return NULL;
s[12] = 0;
s2[8] = 0;
msg = NULL;
for (i = 0; i < 8; i++)
s2[i] = ev->data.b[i];
for (i = 0; i < 12; i++)
s[i] = ev->data.b[i + 8];
sscanf(s2, "%lx", &win);
cl = (Client *) FindItem(NULL, win, LIST_FINDBY_ID, LIST_TYPE_CLIENT);
if (!cl)
{
cl = ClientCreate(win);
if (!cl)
return NULL;
}
if (cl->msg)
{
/* append text to end of msg */
cl->msg = Erealloc(cl->msg, strlen(cl->msg) + strlen(s) + 1);
if (!cl->msg)
return NULL;
strcat(cl->msg, s);
}
else
{
/* new msg */
cl->msg = Emalloc(strlen(s) + 1);
if (!cl->msg)
return NULL;
strcpy(cl->msg, s);
}
if (strlen(s) < 12)
{
msg = cl->msg;
cl->msg = NULL;
*c = cl;
}
return msg;
}
static void
ClientHandleComms(XClientMessageEvent * ev)
{
Client *c;
char *s;
const char *s1, *s2;
s = ClientCommsGet(&c, ev);
if (!s)
return;
if (EventDebug(EDBUG_TYPE_IPC))
Eprintf("ClientHandleComms: %s\n", s);
if (!strncmp(s, "set ", 4))
{
/* The old Client set command (used by epplets) */
if (ClientConfigure(c, s) == 0)
goto done;
}
if (!HandleIPC(s, c))
{
s1 = (c->clientname) ? c->clientname : "UNKNOWN";
s2 = (c->version) ? c->version : "UNKNOWN";
DialogOK(_("E IPC Error"),
_("Received Unknown Client Message.\n"
"Client Name: %s\n" "Client Version: %s\n"
"Message Contents:\n\n" "%s\n"), s1, s2, s);
SoundPlay("SOUND_ERROR_IPC");
}
done:
Efree(s);
}
static void
ClientHandleEvents(XEvent * ev, void *cc)
{
Client *c = (Client *) cc;
#if 0
Eprintf("ClientHandleEvents: type=%d win=%#lx\n", ev->type, ev->xany.window);
#endif
switch (ev->type)
{
case DestroyNotify:
ClientDestroy(c);
break;
case ClientMessage:
ClientHandleComms(&(ev->xclient));
break;
}
}
void
CommsInit(void)
{
char s[1024];
comms_win = ECreateEventWindow(VRoot.win, -100, -100, 5, 5);
ERegisterWindow(comms_win);
XSelectInput(disp, comms_win, StructureNotifyMask | SubstructureNotifyMask);
EventCallbackRegister(comms_win, 0, ClientHandleEvents, NULL);
Esnprintf(s, sizeof(s), "WINID %8x", (int)comms_win);
XA_ENLIGHTENMENT_COMMS = XInternAtom(disp, "ENLIGHTENMENT_COMMS", False);
ecore_x_window_prop_string_set(comms_win, XA_ENLIGHTENMENT_COMMS, s);
ecore_x_window_prop_string_set(VRoot.win, XA_ENLIGHTENMENT_COMMS, s);
XA_ENL_MSG = XInternAtom(disp, "ENL_MSG", False);
}
static void
CommsDoSend(Window win, const char *s)
{
char ss[21];
int i, j, k, len;
XEvent ev;
if ((!win) || (!s))
return;
len = strlen(s);
ev.xclient.type = ClientMessage;
ev.xclient.serial = 0;
ev.xclient.send_event = True;
ev.xclient.window = win;
ev.xclient.message_type = XA_ENL_MSG;
ev.xclient.format = 8;
for (i = 0; i < len + 1; i += 12)
{
Esnprintf(ss, sizeof(ss), "%8x", (int)comms_win);
for (j = 0; j < 12; j++)
{
ss[8 + j] = s[i + j];
if (!s[i + j])
j = 12;
}
ss[20] = 0;
for (k = 0; k < 20; k++)
ev.xclient.data.b[k] = ss[k];
XSendEvent(disp, win, False, 0, (XEvent *) & ev);
}
}
void
CommsSend(Client * c, const char *s)
{
if (!c)
return;
c->replied = 1;
CommsDoSend(c->win, s);
}
void
CommsFlush(Client * c)
{
if (!c)
return;
if (!c->replied)
CommsDoSend(c->win, "");
}
/*
* When we are running in multi-head, connect to the master wm process
* and send the message
*/
void
CommsSendToMasterWM(const char *s)
{
if (Mode.wm.master)
return;
CommsDoSend(RootWindow(disp, Mode.wm.master_screen), s);
}
/*
* When we are running in multi-head, connect to the slave wm processes
* and broadcast the message
*/
void
CommsBroadcastToSlaveWMs(const char *s)
{
int screen;
if (!Mode.wm.master || Mode.wm.single)
return;
for (screen = 0; screen < Mode.display.screens; screen++)
{
if (screen != Mode.wm.master_screen)
CommsDoSend(RootWindow(disp, screen), s);
}
}
void
CommsBroadcast(const char *s)
{
char **l;
int num, i;
Client *c;
l = ListItems(&num, LIST_TYPE_CLIENT);
if (!s)
return;
for (i = 0; i < num; i++)
{
c = (Client *) FindItem(l[i], 0, LIST_FINDBY_NAME, LIST_TYPE_CLIENT);
if (c)
CommsSend(c, s);
}
EstrlistFree(l, num);
}
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