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/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <crm_internal.h>
#include <crm/crm.h>
#include <crm/common/ipc.h>
#include <glib/ghash.h>
#include <crm/ais.h>
int num_clients = 0;
GHashTable *ipc_client_list = NULL;
gboolean ais_shutdown_flag = FALSE;
typedef struct ais_client_s
{
char *id;
char *name;
char *callback_id;
const char *channel_name;
IPC_Channel *channel;
GCHSource *source;
unsigned long num_calls;
} ais_client_t;
static void
ais_ipc_connection_destroy(gpointer user_data)
{
ais_client_t *ais_client = user_data;
if(ais_client == NULL) {
return;
}
if(ais_client->source != NULL) {
crm_debug_4("Deleting %s (%p) from mainloop",
ais_client->name, ais_client->source);
G_main_del_IPC_Channel(ais_client->source);
ais_client->source = NULL;
}
crm_debug_3("Destroying %s (%p)", ais_client->name, user_data);
num_clients--;
crm_debug("Num unfree'd clients: %d", num_clients);
crm_free(ais_client->name);
crm_free(ais_client->callback_id);
crm_free(ais_client->id);
crm_free(ais_client);
crm_debug_4("Freed the cib client");
return;
}
static gboolean
ais_process_disconnect(IPC_Channel *channel, ais_client_t *ais_client)
{
if (channel == NULL) {
CRM_DEV_ASSERT(ais_client == NULL);
} else if (ais_client == NULL) {
crm_err("No client");
} else {
CRM_DEV_ASSERT(channel->ch_status != IPC_CONNECT);
crm_debug_2("Cleaning up after client disconnect: %s/%s/%s",
crm_str(ais_client->name),
ais_client->channel_name,
ais_client->id);
if(ais_client->id != NULL) {
if(!g_hash_table_remove(ipc_client_list, ais_client->id)) {
crm_err("Client %s not found in the hashtable",
ais_client->name);
}
}
}
if(ais_shutdown_flag && g_hash_table_size(ipc_client_list) == 0) {
crm_info("All clients disconnected...");
exit(0);
}
return FALSE;
}
static gboolean
ais_ipc_callback(IPC_Channel *channel, gpointer user_data)
{
int lpc = 0;
xmlNode *op_request = NULL;
gboolean keep_channel = TRUE;
ais_client_t *ais_client = user_data;
if(ais_client == NULL) {
crm_err("Receieved call from unknown source. Discarding.");
return FALSE;
}
if(ais_client->name == NULL) {
ais_client->name = crm_itoa(channel->farside_pid);
}
if(ais_client->id == NULL) {
ais_client->id = crm_strdup(ais_client->name);
g_hash_table_insert(ipc_client_list, ais_client->id, ais_client);
}
crm_err("Callback for %s on %s channel",
ais_client->id, ais_client->channel_name);
while(IPC_ISRCONN(channel)) {
if(channel->ops->is_message_pending(channel) == 0) {
break;
}
op_request = msgfromIPC_noauth(channel);
if (op_request == NULL) {
perror("Receive failure:");
break;
}
lpc++;
crm_assert_failed = FALSE;
ha_msg_add(op_request, "client-id", ais_client->id);
ha_msg_add(op_request, "client-name", ais_client->name);
crm_log_xml(LOG_ERR, "Client[inbound]", op_request);
/* cib_common_callback_worker( */
/* op_request, cib_client, force_synchronous, privileged); */
crm_msg_del(op_request);
if(channel->ch_status == IPC_CONNECT) {
break;
}
}
crm_debug_2("Processed %d messages", lpc);
if(channel->ch_status != IPC_CONNECT) {
crm_debug_2("Client disconnected");
keep_channel = ais_process_disconnect(channel, ais_client);
}
return keep_channel;
}
gboolean
ais_client_connect(IPC_Channel *channel, gpointer user_data)
{
const char *channel_name = user_data;
ais_client_t *new_client = NULL;
crm_debug_3("Connecting channel");
if (channel == NULL) {
crm_err("Channel was NULL");
} else if (channel->ch_status != IPC_CONNECT) {
crm_err("Channel was disconnected");
} else if(channel_name == NULL) {
crm_err("user_data must contain channel name");
} else if(ais_shutdown_flag) {
crm_info("Ignoring new client [%d] during shutdown",
channel->farside_pid);
} else {
crm_malloc0(new_client, sizeof(ais_client_t));
num_clients++;
new_client->channel = channel;
new_client->channel_name = channel_name;
crm_debug_3("Created channel %p for channel %s",
new_client, new_client->channel_name);
channel->ops->set_recv_qlen(channel, 500);
channel->ops->set_send_qlen(channel, 500);
new_client->source = G_main_add_IPC_Channel(
G_PRIORITY_DEFAULT, channel, FALSE, ais_ipc_callback,
new_client, ais_ipc_connection_destroy);
crm_debug_3("Channel %s connected for client %s",
new_client->channel_name, new_client->id);
}
if(new_client == NULL) {
return FALSE;
}
return TRUE;
}
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