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/*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
*  by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: srv.c,v 1.2.2.4 2011/07/14 01:52:48 misho Exp $
*
**************************************************************************
The ELWIX and AITNET software is distributed under the following
terms:

All of the documentation and software included in the ELWIX and AITNET
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>

Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
	by Michael Pounov <misho@elwix.org>.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
   must display the following acknowledgement:
This product includes software developed by Michael Pounov <misho@elwix.org>
ELWIX - Embedded LightWeight unIX and its contributors.
4. Neither the name of AITNET nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include "global.h"


static void *
rpc_srv_dispatchCall(void *arg)
{
	rpc_cli_t *c = arg;
	rpc_srv_t *s;
	rpc_val_t *vals = NULL, *v = NULL;
	rpc_func_t *f = NULL;
	struct tagRPCCall *rpc;
	struct tagRPCRet *rrpc;
	fd_set fds;
	u_char buf[BUFSIZ], *data;
	int ret, argc = 0, Limit = 0;
	register int i;

	if (!arg) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t procced RPC client ...\n");
		return NULL;
	} else
		s = c->cli_parent;

	do {
		v = NULL;
		FD_ZERO(&fds);
		FD_SET(c->cli_sock, &fds);
		ret = select(c->cli_sock + 1, &fds, NULL, NULL, NULL);
		if (ret == -1) {
			ret = -2;
		}
		memset(buf, 0, BUFSIZ);
		if ((ret = recv(c->cli_sock, buf, BUFSIZ, 0)) == -1) {
			LOGERR;
			ret = -3;
			break;
		}
		if (!ret) {		// receive EOF
			ret = 0;
			break;
		}
		if (ret < sizeof(struct tagRPCCall)) {
			rpc_SetErr(EMSGSIZE, "Error:: too short RPC packet ...\n");
			ret = -4;
			break;
		} else
			rpc = (struct tagRPCCall*) buf;
		// check RPC packet session info
		if (memcmp(&rpc->call_session, &s->srv_session, sizeof rpc->call_session)) {
			rpc_SetErr(EINVAL, "Error:: get invalid RPC session ...\n");
			ret = -5;
			goto makeReply;
		} else
			Limit = sizeof(struct tagRPCCall);
		// RPC is OK! Go decapsulate variables ...
		if (rpc->call_argc) {
			v = (rpc_val_t*) (buf + Limit);
			// check RPC packet length
			if (rpc->call_argc * sizeof(rpc_val_t) > BUFSIZ - Limit) {
				rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n");
				ret = -5;
				goto makeReply;
			} else
				Limit += rpc->call_argc * sizeof(rpc_val_t);
			// RPC received variables types OK!
			data = (u_char*) v + rpc->call_argc * sizeof(rpc_val_t);
			for (i = 0; i < rpc->call_argc; i++) {
				switch (v[i].val_type) {
					case buffer:
						if (v[i].val_len > BUFSIZ - Limit) {
							rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n");
							ret = -5;
							goto makeReply;
						} else
							Limit += v[i].val_len;

						v[i].val.buffer = data;
					       	data += v[i].val_len;
						break;
					case string:
						if (v[i].val_len > BUFSIZ - Limit) {
							rpc_SetErr(EMSGSIZE, "Error:: Too big RPC packet ...\n");
							ret = -5;
							goto makeReply;
						} else
							Limit += v[i].val_len;

						v[i].val.string = (int8_t*) data;
						data += v[i].val_len;
						break;
					case blob:
						if (s->srv_blob.state == disable) {
							rpc_SetErr(ENOTSUP, "Error:: BLOB server is disabled\n");
							ret = -5;
							goto makeReply;
						}
					default:
						break;
				}
			}
		}

		argc = 0;
		vals = NULL;
		if (!(f = rpc_srv_getCall(s, rpc->call_tag, rpc->call_hash))) {
			rpc_SetErr(EINVAL, "Error:: call not found into RPC server ...\n");
			ret = -6;
		} else
			if ((ret = rpc_srv_execCall(f, rpc, v)) == -1)
				ret = -9;
			else
				argc = rpc_srv_getValsCall(f, &vals);

makeReply:
		memset(buf, 0, BUFSIZ);
		rrpc = (struct tagRPCRet*) buf;
		Limit = sizeof(struct tagRPCRet);

		memcpy(&rrpc->ret_session, &rpc->call_session, sizeof rrpc->ret_session);
		rrpc->ret_tag = rpc->call_tag;
		rrpc->ret_hash = rpc->call_hash;
		rrpc->ret_errno = rpc_Errno;
		rrpc->ret_retcode = ret;
		rrpc->ret_argc = argc;

		if (argc && vals) {
			v = (rpc_val_t*) (buf + Limit);
			if (argc * sizeof(rpc_val_t) > BUFSIZ - Limit) {
				for (i = 0; i < argc; i++)
					RPC_FREE_VAL(&vals[i]);
				rpc_srv_freeValsCall(f);
				vals = NULL;
				argc = 0;
				ret = -7;
				rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet values (-7) ...\n");
				goto makeReply;
			} else
				Limit += argc * sizeof(rpc_val_t);
			memcpy(v, vals, argc * sizeof(rpc_val_t));
			data = (u_char*) v + argc * sizeof(rpc_val_t);
			for (ret = i = 0; i < argc; i++) {
				switch (vals[i].val_type) {
					case buffer:
						if (ret || Limit + vals[i].val_len > BUFSIZ) {
							rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet (-7) ...\n");
							rrpc->ret_retcode = ret = -7;
							rrpc->ret_argc = 0;
							break;
						}

						memcpy(data, vals[i].val.buffer, vals[i].val_len);
						data += vals[i].val_len;
						Limit += vals[i].val_len;
						break;
					case string:
						if (ret || Limit + vals[i].val_len > BUFSIZ) {
							rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet (-7) ...\n");
							rrpc->ret_retcode = ret = -7;
							rrpc->ret_argc = 0;
							break;
						}

						memcpy(data, vals[i].val.string, vals[i].val_len);
						data += vals[i].val_len;
						Limit += vals[i].val_len;
						break;
					case blob:
						if (s->srv_blob.state == disable) {
							rpc_SetErr(ENOTSUP, "Error:: BLOB server is disabled\n");
							rrpc->ret_retcode = ret = -5;
							rrpc->ret_argc = 0;
							break;
						}
					default:
						break;
				}

				RPC_FREE_VAL(&vals[i]);
			}
			rpc_srv_freeValsCall(f);
			vals = NULL;
			argc = 0;
		}

		if ((ret = send(c->cli_sock, buf, Limit, 0)) == -1) {
			LOGERR;
			ret = -8;
			break;
		}
		if (ret != Limit) {
			rpc_SetErr(ECANCELED, "Error:: in send RPC request, should be send %d bytes, "
					"really is %d\n", Limit, ret);
			ret = -9;
			break;
		}
	} while (ret > -1);

	shutdown(c->cli_sock, SHUT_RDWR);
	close(c->cli_sock);
	memset(c, 0, sizeof(rpc_cli_t));
	return (void*) (long)ret;
}


static void *
rpc_srv_dispatchVars(void *arg)
{
	rpc_cli_t *c = arg;
	rpc_srv_t *s;
	rpc_blob_t *b;
	int ret;
	fd_set fds;
	u_char buf[sizeof(struct tagBLOBHdr)];
	struct tagBLOBHdr *blob;

	if (!arg) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t procced BLOB client ...\n");
		return NULL;
	} else
		s = c->cli_parent;

	do {
		// check for disable service at this moment?
		if (s->srv_blob.state == disable) {
			ret = 0;
			break;
		}

		FD_ZERO(&fds);
		FD_SET(c->cli_sock, &fds);
		ret = select(c->cli_sock + 1, &fds, NULL, NULL, NULL);
		if (ret == -1) {
			ret = -2;
		}

		memset(buf, 0, sizeof buf);
		if ((ret = recv(c->cli_sock, buf, sizeof buf, 0)) == -1) {
			LOGERR;
			ret = -3;
			break;
		}
		if (!ret || s->srv_blob.state == disable) {	// receive EOF or disable service
			ret = 0;
			break;
		}
		if (ret < sizeof(struct tagBLOBHdr)) {
			rpc_SetErr(EMSGSIZE, "Error:: too short BLOB packet ...\n");
			ret = -4;
			break;
		} else
			blob = (struct tagBLOBHdr*) buf;
		// check BLOB packet session info
		if (memcmp(&blob->hdr_session, &s->srv_session, sizeof blob->hdr_session)) {
			rpc_SetErr(EINVAL, "Error:: get invalid BLOB session ...\n");
			ret = -5;
			goto makeReply;
		}
		// Go to proceed packet ...
		switch (blob->hdr_cmd) {
			case get:
				if (!(b = rpc_srv_getBLOB(s, blob->hdr_var))) {
					rpc_SetErr(EINVAL, "Error:: var (%x) not found into BLOB server ...\n", 
							blob->hdr_var);
					ret = -6;
					break;
				} else
					blob->hdr_len = b->blob_len;

				if (rpc_srv_blobMap(s, b) != -1) {
					ret = rpc_srv_sendBLOB(c, b);
					rpc_srv_blobUnmap(b);
				} else
					ret = -7;
				break;
			case set:
				if ((b = rpc_srv_registerBLOB(s, blob->hdr_len))) {
					// set new BLOB variable for reply :)
					blob->hdr_var = b->blob_var;

					ret = rpc_srv_recvBLOB(c, b);
					rpc_srv_blobUnmap(b);
				} else
					ret = -7;
				break;
			case unset:
				ret = rpc_srv_unregisterBLOB(s, blob->hdr_var);
				if (ret == -1)
					ret = -7;
				break;
			default:
				rpc_SetErr(EINVAL, "Error:: unsupported BLOB command (%d)...\n", 
						blob->hdr_cmd);
				ret = -7;
		}

makeReply:
		// Replay to client!
		blob->hdr_cmd = ret < 0 ? error : ok;
		blob->hdr_ret = ret;
		if ((ret = send(c->cli_sock, buf, sizeof buf, 0)) == -1) {
			LOGERR;
			ret = -8;
			break;
		}
		if (ret != sizeof buf) {
			rpc_SetErr(ECANCELED, "Error:: in send BLOB reply, should be send %d bytes, "
					"really is %d\n", sizeof buf, ret);
			ret = -9;
			break;
		}
	} while (ret > -1);

	shutdown(c->cli_sock, SHUT_RDWR);
	close(c->cli_sock);
	memset(c, 0, sizeof(rpc_cli_t));
	return (void*) (long)ret;
}

// -------------------------------------------------

/*
 * rpc_srv_initBLOBServer() Init & create BLOB Server
 * @Port = Port for bind server, if Port == 0 default port is selected
 * @diskDir = Disk place for BLOB file objects
 * return: -1 == error or 0 bind and created BLOB server instance
 */
int
rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir)
{
	int n = 1;
	struct sockaddr_in sin;
	struct sockaddr_in6 sin6;

	if (!srv) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init BLOB server ...\n");
		return -1;
	}
	if (srv->srv_blob.state) {
		rpc_SetErr(EPERM, "Warning:: Already started BLOB server!\n");
		return 0;
	}
	if (!Port)
		Port = RPC_DEFPORT + 1;

	memset(&srv->srv_blob, 0, sizeof srv->srv_blob);
	if (access(diskDir, R_OK | W_OK) == -1) {
		LOGERR;
		return -1;
	} else
		strlcpy(srv->srv_blob.dir, diskDir, UCHAR_MAX + 1);

	srv->srv_blob.server.cli_tid = pthread_self();
	srv->srv_blob.server.cli_parent = srv;
	if (srv->srv_server.cli_sa.sa_family == AF_INET) {
		memcpy(&sin, &srv->srv_server.cli_sa, sizeof sin);
		sin.sin_port = htons(Port);
		memcpy(&srv->srv_blob.server.cli_sa, &sin, sizeof(struct sockaddr));
	} else {
		memcpy(&sin6, &srv->srv_server.cli_sa, sizeof sin6);
		sin6.sin6_port = htons(Port);
		memcpy(&srv->srv_blob.server.cli_sa, &sin6, sizeof(struct sockaddr));
	}

	srv->srv_blob.server.cli_sock = socket(srv->srv_server.cli_sa.sa_family, SOCK_STREAM, 0);
	if (srv->srv_blob.server.cli_sock == -1) {
		LOGERR;
		return -1;
	}
	if (setsockopt(srv->srv_blob.server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
		LOGERR;
		close(srv->srv_blob.server.cli_sock);
		return -1;
	}
	if (bind(srv->srv_blob.server.cli_sock, &srv->srv_blob.server.cli_sa, 
				sizeof srv->srv_blob.server.cli_sa) == -1) {
		LOGERR;
		close(srv->srv_blob.server.cli_sock);
		return -1;
	}

	srv->srv_blob.clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
	if (!srv->srv_blob.clients) {
		LOGERR;
		close(srv->srv_blob.server.cli_sock);
		return -1;
	} else
		memset(srv->srv_blob.clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));

	pthread_mutex_init(&srv->srv_blob.mtx, NULL);

	pthread_mutex_lock(&srv->srv_mtx);
	rpc_srv_registerCall(srv, NULL, CALL_BLOBSHUTDOWN, 0);
	rpc_srv_registerCall(srv, NULL, CALL_BLOBCLIENTS, 0);
	rpc_srv_registerCall(srv, NULL, CALL_BLOBVARS, 0);
	rpc_srv_registerCall(srv, NULL, CALL_BLOBSTATE, 1);
	pthread_mutex_unlock(&srv->srv_mtx);

	srv->srv_blob.state = enable;	// enable BLOB
	return 0;
}

/*
 * rpc_srv_endBLOBServer() Destroy BLOB server, close all opened sockets and free resources
 * @srv = RPC Server instance
 * return: none
 */
void
rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv)
{
	rpc_cli_t *c;
	register int i;
	rpc_blob_t *f;

	if (!srv) {
		rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n");
		return;
	} else
		srv->srv_blob.state = disable;

	rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSHUTDOWN);
	rpc_srv_unregisterCall(srv, NULL, CALL_BLOBCLIENTS);
	rpc_srv_unregisterCall(srv, NULL, CALL_BLOBVARS);
	rpc_srv_unregisterCall(srv, NULL, CALL_BLOBSTATE);

	for (i = 0, c = srv->srv_blob.clients; i < srv->srv_numcli && c; i++, c++)
		if (c->cli_sa.sa_family)
			shutdown(c->cli_sock, SHUT_RDWR);
	close(srv->srv_blob.server.cli_sock);

	if (srv->srv_blob.clients) {
		free(srv->srv_blob.clients);
		srv->srv_blob.clients = NULL;
	}

	pthread_mutex_lock(&srv->srv_blob.mtx);
	while ((f = srv->srv_blob.blobs)) {
		srv->srv_blob.blobs = f->blob_next;
		rpc_srv_blobFree(srv, f);
		free(f);
	}
	pthread_mutex_unlock(&srv->srv_blob.mtx);

	while (pthread_mutex_trylock(&srv->srv_blob.mtx) == EBUSY);
	pthread_mutex_destroy(&srv->srv_blob.mtx);
}

/*
 * rpc_srv_execBLOBServer() Execute Main BLOB server loop and wait for clients requests
 * @srv = RPC Server instance
 * return: -1 error or 0 ok, infinite loop ...
 */
int
rpc_srv_execBLOBServer(rpc_srv_t * __restrict srv)
{
	socklen_t salen = sizeof(struct sockaddr);
	register int i;
	rpc_cli_t *c;
	fd_set fds;
	int ret;
	struct timeval tv = { DEF_RPC_TIMEOUT, 0 };

	if (!srv || srv->srv_blob.state == disable) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t start BLOB server ...\n");
		return -1;
	}

	if (listen(srv->srv_blob.server.cli_sock, SOMAXCONN) == -1) {
		LOGERR;
		return -1;
	}

	while (!blob_Kill && !rpc_Kill) {
		for (c = srv->srv_blob.clients, i = 0; i < srv->srv_numcli && c; i++, c++)
			if (!c->cli_sa.sa_family)
				break;
		if (i >= srv->srv_numcli) {
			usleep(1000000);
			continue;
		}

		FD_ZERO(&fds);
		FD_SET(srv->srv_blob.server.cli_sock, &fds);
		ret = select(srv->srv_blob.server.cli_sock + 1, &fds, NULL, NULL, &tv);
		if (ret == -1) {
			LOGERR;
			ret = 1;
			break;
		}
		if (!ret)
			continue;

		c->cli_sock = accept(srv->srv_blob.server.cli_sock, &c->cli_sa, &salen);
		if (c->cli_sock == -1) {
			LOGERR;
			continue;
		} else
			c->cli_parent = srv;

		if (pthread_create(&c->cli_tid, NULL, rpc_srv_dispatchVars, c)) {
			LOGERR;
			continue;
		}
	}

	srv->srv_blob.state = disable;

	return 0;
}


/*
 * rpc_srv_initServer() Init & create RPC Server
 * @regProgID = ProgramID for authentication & recognition
 * @regProcID = ProcessID for authentication & recognition
 * @concurentClients = Concurent clients at same time to this server
 * @family = Family socket type, AF_INET or AF_INET6
 * @csHost = Host name or IP address for bind server, if NULL any address
 * @Port = Port for bind server, if Port == 0 default port is selected
 * return: NULL == error or !=NULL bind and created RPC server instance
 */
rpc_srv_t *
rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients, 
		u_short family, const char *csHost, u_short Port)
{
	rpc_srv_t *srv = NULL;
	int n = 1;
	struct hostent *host = NULL;
	struct sockaddr_in sin;
	struct sockaddr_in6 sin6;

	if (!concurentClients || !regProgID || (family != AF_INET && family != AF_INET6)) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t init RPC server ...\n");
		return NULL;
	}
	if (!Port)
		Port = RPC_DEFPORT;
	if (csHost) {
		host = gethostbyname2(csHost, family);
		if (!host) {
			rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno));
			return NULL;
		}
	}
	switch (family) {
		case AF_INET:
			memset(&sin, 0, sizeof sin);
			sin.sin_len = sizeof sin;
			sin.sin_family = family;
			sin.sin_port = htons(Port);
			if (csHost)
				memcpy(&sin.sin_addr, host->h_addr, host->h_length);
			break;
		case AF_INET6:
			memset(&sin6, 0, sizeof sin6);
			sin6.sin6_len = sizeof sin6;
			sin6.sin6_family = family;
			sin6.sin6_port = htons(Port);
			if (csHost)
				memcpy(&sin6.sin6_addr, host->h_addr, host->h_length);
			break;
		default:
			rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t start RPC server ...\n");
			return NULL;
	}

	srv = malloc(sizeof(rpc_srv_t));
	if (!srv) {
		LOGERR;
		return NULL;
	} else
		memset(srv, 0, sizeof(rpc_srv_t));

	srv->srv_numcli = concurentClients;
	srv->srv_session.sess_version = RPC_VERSION;
	srv->srv_session.sess_program = regProgID;
	srv->srv_session.sess_process = regProcID;

	srv->srv_server.cli_tid = pthread_self();
	srv->srv_server.cli_parent = srv;
	if (family == AF_INET)
		memcpy(&srv->srv_server.cli_sa, &sin, sizeof srv->srv_server.cli_sa);
	else
		memcpy(&srv->srv_server.cli_sa, &sin6, sizeof srv->srv_server.cli_sa);
	srv->srv_server.cli_sock = socket(family, SOCK_STREAM, 0);
	if (srv->srv_server.cli_sock == -1) {
		LOGERR;
		free(srv);
		return NULL;
	}
	if (setsockopt(srv->srv_server.cli_sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
		LOGERR;
		close(srv->srv_server.cli_sock);
		free(srv);
		return NULL;
	}
	if (bind(srv->srv_server.cli_sock, &srv->srv_server.cli_sa, sizeof srv->srv_server.cli_sa) == -1) {
		LOGERR;
		close(srv->srv_server.cli_sock);
		free(srv);
		return NULL;
	}

	srv->srv_clients = calloc(srv->srv_numcli, sizeof(rpc_cli_t));
	if (!srv->srv_clients) {
		LOGERR;
		close(srv->srv_server.cli_sock);
		free(srv);
		return NULL;
	} else
		memset(srv->srv_clients, 0, srv->srv_numcli * sizeof(rpc_cli_t));

	pthread_mutex_init(&srv->srv_mtx, NULL);

	rpc_srv_registerCall(srv, NULL, CALL_SRVSHUTDOWN, 0);
	rpc_srv_registerCall(srv, NULL, CALL_SRVCLIENTS, 0);
	rpc_srv_registerCall(srv, NULL, CALL_SRVCALLS, 0);
	rpc_srv_registerCall(srv, NULL, CALL_SRVSESSIONS, 0);
	return srv;
}

/*
 * rpc_srv_endServer() Destroy RPC server, close all opened sockets and free resources
 * @srv = RPC Server instance
 * return: none
 */
void
rpc_srv_endServer(rpc_srv_t * __restrict srv)
{
	rpc_cli_t *c;
	register int i;
	rpc_func_t *f;

	if (!srv) {
		rpc_SetErr(EINVAL, "Error:: Can`t destroy server because parameter is null!\n");
		return;
	}

	rpc_srv_endBLOBServer(srv);

	for (i = 0, c = srv->srv_clients; i < srv->srv_numcli && c; i++, c++)
		if (c->cli_sa.sa_family) {
			shutdown(c->cli_sock, SHUT_RDWR);
			close(c->cli_sock);
		}
	close(srv->srv_server.cli_sock);

	if (srv->srv_clients) {
		free(srv->srv_clients);
		srv->srv_clients = NULL;
		srv->srv_numcli = 0;
	}

	pthread_mutex_lock(&srv->srv_mtx);
	while ((f = srv->srv_funcs)) {
		srv->srv_funcs = f->func_next;
		free(f);
	}
	pthread_mutex_unlock(&srv->srv_mtx);

	while (pthread_mutex_trylock(&srv->srv_mtx) == EBUSY);
	pthread_mutex_destroy(&srv->srv_mtx);

	free(srv);
	srv = NULL;
}

/*
 * rpc_srv_execServer() Execute Main server loop and wait for clients requests
 * @srv = RPC Server instance
 * return: -1 error or 0 ok, infinite loop ...
 */
int
rpc_srv_execServer(rpc_srv_t * __restrict srv)
{
	socklen_t salen = sizeof(struct sockaddr);
	register int i;
	rpc_cli_t *c;
	fd_set fds;
	int ret;
	struct timeval tv = { DEF_RPC_TIMEOUT, 0 };

	if (!srv) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t start RPC server ...\n");
		return -1;
	}

	if (listen(srv->srv_server.cli_sock, SOMAXCONN) == -1) {
		LOGERR;
		return -1;
	}

	while (!rpc_Kill) {
		for (c = srv->srv_clients, i = 0; i < srv->srv_numcli && c; i++, c++)
			if (!c->cli_sa.sa_family)
				break;
		if (i >= srv->srv_numcli) {
			usleep(1000000);
			continue;
		}

		FD_ZERO(&fds);
		FD_SET(srv->srv_server.cli_sock, &fds);
		ret = select(srv->srv_server.cli_sock + 1, &fds, NULL, NULL, &tv);
		if (ret == -1) {
			LOGERR;
			ret = 1;
			break;
		}
		if (!ret)
			continue;

		c->cli_sock = accept(srv->srv_server.cli_sock, &c->cli_sa, &salen);
		if (c->cli_sock == -1) {
			LOGERR;
			continue;
		} else
			c->cli_parent = srv;

		if (pthread_create(&c->cli_tid, NULL, rpc_srv_dispatchCall, c)) {
			LOGERR;
			continue;
		}
	}

	return 0;
}

// ---------------------------------------------------------

/*
 * rpc_srv_execCall() Execute registered call from RPC server
 * @call = Register RPC call
 * @rpc = IN RPC call structure
 * @args = IN RPC call array of rpc values
 * return: -1 error, !=-1 ok
 */
int
rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc, 
		rpc_val_t * __restrict args)
{
	void *dl;
	rpc_callback_t func;
	int ret;

	if (!call || !rpc || !call->func_parent) {
		rpc_SetErr(EINVAL, "Error:: Invalid parameter can`t exec call from RPC server ...\n");
		return -1;
	}

	dl = dlopen((char*) (*call->func_file ? call->func_file : NULL), RTLD_NOW);
	if (!dl) {
		rpc_SetErr(ENOENT, "Error:: Can`t attach module %s!\n", dlerror());
		return -1;
	}

	func = dlsym(dl, (char*) call->func_name);
	if (func)
		ret = func(call, rpc->call_argc, args);
	else {
		rpc_SetErr(ENOEXEC, "Error:: Can`t find function %s!\n", dlerror());
		ret = -1;
	}

	dlclose(dl);
	return ret;
}