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e16/src/comms.c

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/*
* Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
* Copyright (C) 2004-2008 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"
#include "comms.h"
#include "hints.h"
#include "ipc.h"
#include "e16-ecore_hints.h"
#include "e16-ecore_list.h"
#include "xwin.h"
typedef struct
{
char *name;
Window xwin;
char *msg;
char *clientname;
char *version;
char *info;
char replied;
} Client;
static void CommsSend(Client * c, const char *s);
static Ecore_List *client_list = NULL;
static Win comms_win = NoWin;
static Client *
ClientCreate(Window xwin)
{
Client *c;
char st[32];
c = ECALLOC(Client, 1);
if (!c)
return NULL;
Esnprintf(st, sizeof(st), "%8x", (int)xwin);
c->name = Estrdup(st);
c->xwin = xwin;
if (!client_list)
client_list = ecore_list_new();
ecore_list_prepend(client_list, c);
return c;
}
static void
ClientDestroy(Client * c)
{
if (!c)
return;
ecore_list_node_remove(client_list, c);
Efree(c->name);
Efree(c->msg);
Efree(c->clientname);
Efree(c->version);
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"))
{
Efree(c->clientname);
c->clientname = Estrdup(value);
}
else if (!strcmp(param, "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"))
{
Efree(c->info);
c->info = Estrdup(value);
}
else if (!strcmp(param, "pixmap"))
{
}
else
{
return -1;
}
return 0;
}
static int
ClientMatchWindow(const void *data, const void *match)
{
return ((const Client *)data)->xwin != (Window) match;
}
static Client *
ClientFind(Window xwin)
{
return (Client *) ecore_list_find(client_list, ClientMatchWindow,
(void *)xwin);
}
static char *
ClientCommsGet(Client ** c, XClientMessageEvent * ev)
{
char s[13], s2[9], *msg;
unsigned int i;
Window xwin;
Client *cl;
if ((!ev) || (!c))
return NULL;
if (ev->message_type != E16_ATOM_COMMS_MSG)
return NULL;
s[12] = 0;
s2[8] = 0;
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];
xwin = None;
sscanf(s2, "%lx", &xwin);
if (xwin == None)
return NULL;
cl = ClientFind(xwin);
if (!cl)
{
cl = ClientCreate(xwin);
if (!cl)
return NULL;
}
/* append text to end of msg */
i = (cl->msg) ? strlen(cl->msg) : 0;
cl->msg = EREALLOC(char, cl->msg, i + strlen(s) + 1);
if (!cl->msg)
return NULL;
strcpy(cl->msg + i, s);
msg = NULL;
if (strlen(s) < 12)
{
msg = cl->msg;
cl->msg = NULL;
*c = cl;
}
return msg;
}
static void
ClientIpcReply(void *data, const char *str)
{
Client *c = (Client *) data;
if (!str)
{
/* Don't send empty replies (ack's) if we ever have replied to this
* client. Without this hack communication with e.g. epplets fails. */
if (c->replied)
return;
str = "";
}
CommsSend(c, str);
c->replied = 1;
}
static void
ClientHandleComms(XClientMessageEvent * ev)
{
Client *c;
char *s;
s = ClientCommsGet(&c, ev);
if (!s)
return;
if (EDebug(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 (!IpcExecReply(s, ClientIpcReply, c))
{
const char *s1, *s2;
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
ClientHandleRootEvents(Win win __UNUSED__, XEvent * ev, void *prm __UNUSED__)
{
Client *c;
#if 0
Eprintf("ClientHandleRootEvents: type=%d win=%#lx\n", ev->type,
ev->xany.window);
#endif
switch (ev->type)
{
case DestroyNotify:
c = ClientFind(ev->xdestroywindow.window);
if (!c)
break;
ClientDestroy(c);
break;
}
}
static void
ClientHandleCommsEvents(Win win __UNUSED__, XEvent * ev, void *prm __UNUSED__)
{
#if 0
Eprintf("ClientHandleCommsEvents: type=%d win=%#lx\n", ev->type,
ev->xany.window);
#endif
switch (ev->type)
{
case ClientMessage:
ClientHandleComms(&(ev->xclient));
break;
}
}
void
CommsInit(void)
{
char s[1024];
comms_win = ECreateEventWindow(VRoot.win, -100, -100, 5, 5);
ESelectInput(comms_win, StructureNotifyMask | SubstructureNotifyMask);
EventCallbackRegister(comms_win, 0, ClientHandleCommsEvents, NULL);
EventCallbackRegister(VRoot.win, 0, ClientHandleRootEvents, NULL);
Esnprintf(s, sizeof(s), "WINID %8lx", WinGetXwin(comms_win));
ecore_x_window_prop_string_set(WinGetXwin(comms_win), E16_ATOM_COMMS_WIN, s);
ecore_x_window_prop_string_set(VRoot.xwin, E16_ATOM_COMMS_WIN, s);
}
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 = E16_ATOM_COMMS_MSG;
ev.xclient.format = 8;
for (i = 0; i < len + 1; i += 12)
{
Esnprintf(ss, sizeof(ss), "%8lx", WinGetXwin(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);
}
}
static void
CommsSend(Client * c, const char *s)
{
if (!c)
return;
CommsDoSend(c->xwin, s);
}
#if 0 /* Unused */
/*
* 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 = FindItem(l[i], 0, LIST_FINDBY_NAME, LIST_TYPE_CLIENT);
if (c)
CommsSend(c, s);
}
StrlistFree(l, num);
}
#endif
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