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clouseau/src/bin/clouseaud.c

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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <fcntl.h>
#include <Ecore_Ipc.h>
#include "clouseau_private.h"
#define RUNNING_DIR "/tmp"
#define LOCK_FILE ".clouseaud.lock"
#define LOG_FILE "clouseaud.log"
static Eina_List *gui = NULL; /* List of app_info_st for gui clients */
static Eina_List *app = NULL; /* List of app_info_st for app clients */
Ecore_Ipc_Server *ipc_svr = NULL;
/* For Debug */
char msg_buf[MAX_LINE+1];
struct _tree_info_st
{
void *app; /* app ptr to identify where the data came from */
void *data; /* Tree data */
};
typedef struct _tree_info_st tree_info_st;
static void
log_message(char *filename, char *mode, char *message)
{
FILE *logfile;
logfile=fopen(filename, mode);
if(!logfile) return;
fprintf(logfile,"%s\n",message);
fclose(logfile);
}
static void
_daemon_cleanup(void)
{ /* Free strings */
app_info_st *p;
sprintf(msg_buf,"Clients connected to this server when exiting: %d\n",
eina_list_count(ecore_ipc_server_clients_get(ipc_svr)));
log_message(LOG_FILE, "a", msg_buf);
EINA_LIST_FREE(gui, p)
{
if(p->file)
free(p->file);
free(p->name);
free(p);
}
EINA_LIST_FREE(app, p)
{
if(p->file)
free(p->file);
free(p->name);
free(p);
}
gui = app = NULL;
ipc_svr = NULL;
clouseau_data_shutdown();
ecore_ipc_shutdown();
ecore_shutdown();
eina_shutdown();
}
void daemonize(void)
{
int i,lfp;
char str[10];
time_t currentTime;
if(getppid()==1) return; /* already a daemon */
i=fork();
if (i<0) exit(1); /* fork error */
if (i>0) exit(0); /* parent exits */
time (&currentTime);
/* child (daemon) continues */
setsid(); /* obtain a new process group */
for (i=getdtablesize();i>=0;--i) close(i); /* close all descriptors */
i=open("/dev/null",O_RDWR);
if (dup(i) == -1) return; /* handle standart I/O */
if (dup(i) == -1) return; /* handle standart I/O */
umask(027); /* set newly created file permissions */
if (chdir(RUNNING_DIR) == -1) return; /* change running directory */
lfp=open(LOCK_FILE,O_RDWR|O_CREAT,0640);
if (lfp<0) exit(1); /* can not open */
if (lockf(lfp,F_TLOCK,0)<0) exit(0); /* can not lock */
/* first instance continues */
sprintf(str,"%d\n",getpid());
if (write(lfp,str,strlen(str)) == -1) return; /* record pid to lockfile */
signal(SIGCHLD,SIG_IGN); /* ignore child */
signal(SIGTSTP,SIG_IGN); /* ignore tty signals */
signal(SIGTTOU,SIG_IGN);
signal(SIGTTIN,SIG_IGN);
log_message(LOG_FILE, "w", "Daemon Started");
log_message(LOG_FILE, "a", ctime(&currentTime));
}
/* START - Ecore communication callbacks */
static int
_client_ptr_cmp(const void *d1, const void *d2)
{
return (((app_info_st *) d1)->ptr - ((unsigned long long) (uintptr_t) d2));
}
static Eina_List *
_add_client(Eina_List *clients, connect_st *t, void *client)
{
if(!eina_list_search_unsorted(clients, _client_ptr_cmp, client))
{
app_info_st *st = calloc(1, sizeof(app_info_st));
st->name = strdup(t->name);
st->pid = t->pid;
st->ptr = (unsigned long long) (uintptr_t) client;
return eina_list_append(clients, st);
}
return clients;
}
static Eina_List *
_remove_client(Eina_List *clients, void *client)
{
app_info_st *p = eina_list_search_unsorted(clients, _client_ptr_cmp, client);
if (p)
{
free(p->name);
free(p);
return eina_list_remove(clients, p);
}
return clients;
}
Eina_Bool
_add(void *data EINA_UNUSED, int type EINA_UNUSED, Ecore_Ipc_Event_Client_Add *ev)
{
ecore_ipc_client_data_size_max_set(ev->client, -1);
sprintf(msg_buf, "<%s> msg from <%p>", __func__, ev->client);
log_message(LOG_FILE, "a", msg_buf);
return ECORE_CALLBACK_RENEW;
}
Eina_Bool
_del(void *data EINA_UNUSED, int type EINA_UNUSED, Ecore_Ipc_Event_Client_Del *ev)
{
if (!ev->client)
return ECORE_CALLBACK_RENEW;
sprintf(msg_buf, "<%s> msg from <%p>", __func__, ev->client);
log_message(LOG_FILE, "a", msg_buf);
/* Now we need to find if its an APP or GUI client */
app_info_st *i = eina_list_search_unsorted(gui, _client_ptr_cmp, ev->client);
if (i) /* Only need to remove GUI client from list */
gui = _remove_client(gui, ev->client);
i = eina_list_search_unsorted(app, _client_ptr_cmp, ev->client);
if (i)
{ /* Notify all GUI clients to remove this APP */
app_closed_st t = { (unsigned long long) (uintptr_t) ev->client };
Eina_List *l;
int size;
void *p = clouseau_data_packet_compose(CLOUSEAU_APP_CLOSED,
&t, sizeof(t), &size, NULL, 0);
if (p)
{
EINA_LIST_FOREACH(gui, l, i)
{
ecore_ipc_client_send((void *) (uintptr_t) i->ptr,
0,0,0,0,EINA_FALSE, p, size);
ecore_ipc_client_flush((void *) (uintptr_t) i->ptr);
}
free(p);
}
app = _remove_client(app, ev->client);
}
ecore_ipc_client_del(ev->client);
if (!eina_list_count(ecore_ipc_server_clients_get(ipc_svr)))
{ /* Trigger cleanup and exit when all clients disconneced */
ecore_main_loop_quit();
}
return ECORE_CALLBACK_RENEW;
}
Eina_Bool
_data(void *data EINA_UNUSED, int type EINA_UNUSED, Ecore_Ipc_Event_Client_Data *ev)
{
void *p;
int size = 0;
sprintf(msg_buf, "<%s> msg from <%p>", __func__, ev->client);
log_message(LOG_FILE, "a", msg_buf);
Variant_st *v = clouseau_data_packet_info_get(ev->data, ev->size);
/* This is where daemon impl communication protocol.
* In order to simplify, all messages also contains recipient ptr
* as saved by daemon.
* Thus we only need to peek this info then FWD, reply to this recipient */
if (!v)
{
log_message(LOG_FILE, "a", "Failed to decode data.");
return ECORE_CALLBACK_RENEW;
}
switch(clouseau_data_packet_mapping_type_get(v->type))
{
case CLOUSEAU_APP_CLIENT_CONNECT:
{ /* Register APP then notify GUI about it */
app_info_st *st;
Eina_List *l;
connect_st *t = v->data;
app_info_st m = { t->pid, (char *) t->name, NULL,
(unsigned long long) (uintptr_t) ev->client, NULL, 0 };
app = _add_client(app, t, ev->client);
p = clouseau_data_packet_compose(CLOUSEAU_APP_ADD,
&m, sizeof(m), &size, NULL, 0);
if (p)
{
EINA_LIST_FOREACH(gui, l, st)
{ /* Notify all GUI clients to add APP */
ecore_ipc_client_send(
(void *) (uintptr_t) st->ptr,
0,0,0,0,EINA_FALSE, p, size);
ecore_ipc_client_flush(
(void *) (uintptr_t) st->ptr);
}
free(p);
}
}
break;
case CLOUSEAU_GUI_CLIENT_CONNECT:
{ /* Register GUI, then notify about all APP */
app_info_st *st;
Eina_List *l;
connect_st *t = v->data;
gui = _add_client(gui, t, ev->client);
EINA_LIST_FOREACH(app, l, st)
{ /* Add all registered apps to newly open GUI */
p = clouseau_data_packet_compose(CLOUSEAU_APP_ADD,
st, sizeof(*st), &size, NULL, 0);
if (p)
{
ecore_ipc_client_send(ev->client,
0,0,0,0,EINA_FALSE, p, size);
ecore_ipc_client_flush(ev->client);
free(p);
}
}
}
break;
case CLOUSEAU_DATA_REQ:
{ /* msg coming from GUI, FWD this to app specified in req */
data_req_st *req = v->data;
if (req->app)
{ /* Requesting specific app data */
if(eina_list_search_unsorted(app,
_client_ptr_cmp,
(void *) (uintptr_t) req->app))
{ /* Do the req only of APP connected to daemon */
data_req_st t = {
(unsigned long long) (uintptr_t) ev->client,
(unsigned long long) (uintptr_t) req->app };
p = clouseau_data_packet_compose(CLOUSEAU_DATA_REQ,
&t, sizeof(t), &size, NULL, 0);
if (p)
{
ecore_ipc_client_send(
(void *) (uintptr_t) req->app,
0,0,0,0, EINA_FALSE, p, size);
ecore_ipc_client_flush(
(void *) (uintptr_t) req->app);
free(p);
}
}
}
else
{ /* requesting ALL apps data */
Eina_List *l;
app_info_st *st;
data_req_st t = {
(unsigned long long) (uintptr_t) ev->client,
(unsigned long long) (uintptr_t) NULL };
EINA_LIST_FOREACH(app, l, st)
{
t.app = (unsigned long long) (uintptr_t) st->ptr;
p = clouseau_data_packet_compose(CLOUSEAU_DATA_REQ,
&t, sizeof(t), &size, NULL, 0);
if (p)
{
ecore_ipc_client_send(
(void *) (uintptr_t) st->ptr,
0,0,0,0, EINA_FALSE, p, size);
ecore_ipc_client_flush(
(void *) (uintptr_t) st->ptr);
free(p);
}
}
}
}
break;
case CLOUSEAU_TREE_DATA:
{ /* Tree Data comes from APP, GUI client specified in msg */
tree_data_st *td = v->data;
if (td->gui)
{ /* Sending tree data to specific GUI client */
if(eina_list_search_unsorted(gui,
_client_ptr_cmp,
(void *) (uintptr_t) td->gui))
{ /* Do the req only of GUI connected to daemon */
ecore_ipc_client_send(
(void *) (uintptr_t) td->gui, 0,0,0,0,
EINA_FALSE, ev->data, ev->size);
ecore_ipc_client_flush(
(void *) (uintptr_t) td->gui);
}
}
else
{ /* Sending tree data to all GUI clients */
Eina_List *l;
app_info_st *info;
EINA_LIST_FOREACH(gui, l, info)
{
ecore_ipc_client_send(
(void *) (uintptr_t) info->ptr, 0,0,0,0,
EINA_FALSE, ev->data, ev->size);
ecore_ipc_client_flush(
(void *) (uintptr_t) info->ptr);
}
}
clouseau_data_tree_free(td->tree);
}
break;
case CLOUSEAU_HIGHLIGHT:
{ /* FWD this message to app */
highlight_st *ht = v->data;
if(eina_list_search_unsorted(app,
_client_ptr_cmp, (void *) (uintptr_t) ht->app))
{ /* Do the req only of APP connected to daemon */
ecore_ipc_client_send((void *)
(uintptr_t) ht->app, 0,0,0,0,
EINA_FALSE, ev->data, ev->size);
ecore_ipc_client_flush((void *) (uintptr_t) ht->app);
}
}
break;
case CLOUSEAU_BMP_REQ:
{
bmp_req_st *req = v->data;
if(eina_list_search_unsorted(app,
_client_ptr_cmp, (void *) (uintptr_t) req->app))
{ /* Do the req only of APP connected to daemon */
bmp_req_st t = {
(unsigned long long) (uintptr_t) ev->client,
req->app, req->object, req->ctr };
p = clouseau_data_packet_compose(CLOUSEAU_BMP_REQ,
&t, sizeof(t), &size, NULL, 0);
if (p)
{ /* FWD req to app with client data */
ecore_ipc_client_send(
(void *) (uintptr_t) req->app,
0,0,0,0, EINA_FALSE, p, size);
ecore_ipc_client_flush(
(void *) (uintptr_t) req->app);
free(p);
}
}
}
break;
case CLOUSEAU_BMP_DATA:
{ /* Bmp Data comes from APP, GUI client specified in msg */
bmp_info_st *st = v->data;
if (st->gui)
{ /* Sending BMP data to specific GUI client */
if(eina_list_search_unsorted(gui,
_client_ptr_cmp,
(void *) (uintptr_t) st->gui))
{ /* Do the req only of GUI connected to daemon */
ecore_ipc_client_send(
(void *) (uintptr_t) st->gui, 0,0,0,0,
EINA_FALSE, ev->data, ev->size);
ecore_ipc_client_flush(
(void *) (uintptr_t) st->gui);
}
}
else
{ /* Sending BMP data to all GUI clients */
Eina_List *l;
app_info_st *info;
EINA_LIST_FOREACH(gui, l, info)
{
ecore_ipc_client_send(
(void *) (uintptr_t) info->ptr, 0,0,0,0,
EINA_FALSE, ev->data, ev->size);
ecore_ipc_client_flush(
(void *) (uintptr_t) info->ptr);
}
}
if (st->bmp)
free(st->bmp);
}
break;
default:
break;
}
clouseau_data_variant_free(v);
log_message(LOG_FILE, "a", "_data() finished");
return ECORE_CALLBACK_RENEW;
}
/* END - Ecore communication callbacks */
int main(void)
{
daemonize();
eina_init();
ecore_init();
ecore_ipc_init();
clouseau_data_init();
if (!(ipc_svr = ecore_ipc_server_add(ECORE_IPC_REMOTE_SYSTEM,
LISTEN_IP, PORT, NULL)))
exit(1);
ecore_ipc_server_data_size_max_set(ipc_svr, -1);
ecore_event_handler_add(ECORE_IPC_EVENT_CLIENT_ADD, (Ecore_Event_Handler_Cb)_add, NULL);
ecore_event_handler_add(ECORE_IPC_EVENT_CLIENT_DEL, (Ecore_Event_Handler_Cb)_del, NULL);
ecore_event_handler_add(ECORE_IPC_EVENT_CLIENT_DATA, (Ecore_Event_Handler_Cb)_data, NULL);
ecore_main_loop_begin();
_daemon_cleanup();
return 0;
}
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