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version 1.9.2.1, 2012/05/28 08:02:00	version 1.29, 2024/03/20 17:32:30
Line 12 terms:	Line 12 terms:
All of the documentation and software included in the ELWIX and AITNET	All of the documentation and software included in the ELWIX and AITNET
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>	Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>

Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012	Copyright 2004 - 2024
by Michael Pounov <misho@elwix.org>. All rights reserved.	by Michael Pounov <misho@elwix.org>. All rights reserved.

Redistribution and use in source and binary forms, with or without	Redistribution and use in source and binary forms, with or without
Line 48 SUCH DAMAGE.	Line 48 SUCH DAMAGE.


#include <assert.h>	#include <assert.h>
#include <stdlib.h>	#include <pthread.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/param.h>
#if !defined(__NetBSD__)
#include <sys/limits.h>
#endif
#include <sys/socket.h>
#include <sys/queue.h>	#include <sys/queue.h>
#include <aitio.h>	#include <aitrpc_pkt.h>
	#include <aitrpc_cli.h>
#include <aitsched.h>	#include <aitsched.h>


#define RPC_VERSION 4
#define RPC_DEFPORT 2611

/* RPC call request flags */

#define RPC_REPLY 0x0
#define RPC_NOREPLY 0x1

/* RPC builtin registed calls */

#define CALL_TAG_MAX 65535

#define CALL_SRVPING 65534

#define CALL_SRVSHUTDOWN 65533
#define CALL_SRVCLIENTS 65532
#define CALL_SRVCALLS 65531
#define CALL_SRVSESSIONS 65530

#define CALL_BLOBSHUTDOWN 65529
#define CALL_BLOBCLIENTS 65528
#define CALL_BLOBVARS 65527


/* RPC types */

typedef enum {
ok, error, no, /* for blob reply */
get, set, unset /* for blob request */
} cmd_type_t;


#define RPC_CALLBACK_CHECK_INPUT(x) do { \	#define RPC_CALLBACK_CHECK_INPUT(x) do { \
assert((x)); \	assert((x)); \
if (!(x)) { \	if (!(x)) { \
Line 104 typedef enum {	Line 65 typedef enum {
} while (0)	} while (0)


/* RPC session identification */	/* Network RPC server elements */

typedef struct {
uint8_t sess_version;
uint32_t sess_program;
uint8_t sess_process;
} __packed rpc_sess_t; /* size == 6 bytes */


/* Server managment RPC functions ... */

/* Network RPC packet - Client request */

struct tagRPCCall {
rpc_sess_t call_session;

uint16_t call_seq;
uint16_t call_len;
uint16_t call_crc;

union {
struct {
uint64_t flags;
} call_req;
struct {
int32_t ret;
int32_t eno;
} call_rep;
};

uint16_t call_tag;
uint16_t call_argc;
ait_val_t call_argv[0];
} __packed; /* size == 24 bytes */
#define RPC_CHK_NOREPLY(x) ((x)->call_req.flags & RPC_NOREPLY)

/* Network BLOB packet - Header */

struct tagBLOBHdr {
rpc_sess_t hdr_session;
uint8_t hdr_cmd;
uint32_t hdr_var;
uint32_t hdr_len;
uint32_t hdr_ret;
uint16_t hdr_crc;
uint8_t hdr_pad;
} __packed; /* size == 22 bytes */

/* Network RPC client & server elements */

/* RPC function registration element! */	/* RPC function registration element! */
typedef struct tagRPCFunc {	typedef struct tagRPCFunc {
ait_val_t func_name;	ait_val_t func_name;

void *func_parent;	void *func_parent;
TAILQ_ENTRY(tagRPCFunc) func_node;
	SLIST_ENTRY(tagRPCFunc) func_next;
	AVL_ENTRY(tagRPCFunc) func_node;
} rpc_func_t;	} rpc_func_t;
#define RPC_FUNC_SERVER(x) ((rpc_srv_t*) (x)->func_parent)	#define RPC_FUNC_SERVER(x) ((rpc_srv_t*) (x)->func_parent)

	/* Tree root node */
	typedef struct tagRPCFuncs {
	pthread_mutex_t mtx;

	struct tagRPCFunc *slh_first;
	struct tagRPCFunc *avlh_root;
	} rpc_funcs_t;
	#define RPC_FUNCS_LOCK(x) pthread_mutex_lock(&(x)->mtx)
	#define RPC_FUNCS_UNLOCK(x) pthread_mutex_unlock(&(x)->mtx)
	#define RPC_FUNCS_ISEMPTY(x) AVL_EMPTY((x))


/* BLOB register element */	/* BLOB register element */
typedef struct tagBLOB {	typedef struct tagBLOB {
uint32_t blob_var; /* BLOB id */	uint32_t blob_var; /* BLOB id */
Line 176 typedef struct tagBLOB {	Line 102 typedef struct tagBLOB {


typedef struct {	typedef struct {
int cli_id; /* slot id */
int cli_sock; /* socket fd */
io_sockaddr_t cli_sa; /* host address */
ait_val_t cli_buf; /* network buffer */

array_t cli_vars; / function return variables */

void cli_parent; / pointer to parent rpc_srv_t for server or to rpc_sess_t for client */
} rpc_cli_t;
#define RPC_RETVARS(x) ((x)->cli_vars)
#define RPC_SRV_SERVER(x) ((rpc_srv_t*) (x)->cli_parent)
#define RPC_CLI_SESSION(x) ((rpc_sess_t*) (x)->cli_parent)

typedef struct {
rpc_sess_t srv_session; /* RPC session registration info */	rpc_sess_t srv_session; /* RPC session registration info */
int srv_netbuf; /* size of network buffer */	int srv_netbuf; /* size of network buffer */
	int srv_proto; /* Server protocol */

pthread_t srv_tid; /* RPC exec pthread */	pthread_t srv_tid; /* RPC exec pthread */
sched_root_task_t srv_root; / RPC server scheduler */	sched_root_task_t srv_root; / RPC server scheduler */
Line 200 typedef struct {	Line 113 typedef struct {
rpc_cli_t srv_server; /* RPC server socket */	rpc_cli_t srv_server; /* RPC server socket */
array_t srv_clients; / connected rpc client sockets */	array_t srv_clients; / connected rpc client sockets */

TAILQ_HEAD(, tagRPCFunc) srv_funcs; /* RPC functions list */	rpc_funcs_t srv_funcs; /* RPC functions */

struct {	struct {
pthread_t tid; /* BLOB exec pthread */	pthread_t tid; /* BLOB exec pthread */
Line 227 typedef struct {	Line 140 typedef struct {
*/	*/
typedef int (rpc_callback_t)(rpc_cli_t , struct tagRPCCall , array_t );	typedef int (rpc_callback_t)(rpc_cli_t , struct tagRPCCall , array_t );

	#define RPC_CALL_DEFINE(x) int (x)(rpc_cli_t, struct tagRPCCall, array_t*)
	#define RPC_CALL_ARGS(arg1, arg2, arg3) rpc_cli_t* arg1, struct tagRPCCall* arg2, array_t* arg3
	#define RPC_CALL_STDARGS RPC_CALL_ARGS(cli, rpc, iv)

/* ----------------------------------------------------------------------- */

/* Error support functions */

// rpc_GetErrno() Get error code of last operation
inline int rpc_GetErrno();
// rpc_GetError() Get error text of last operation
inline const char *rpc_GetError();


/*	/*
* rpc_chkPktSession() - Check RPC session	* rpc_srv_DispatchSignal() - Enable/Disable Signal dispatcher for RPC scheduler
*	*
* @p = packet session	* @x = RPC server instance
* @s = active session	* @y = Enable or =0 Disable
* return: -1, 1, 2, 3 are errors or 0 ok	* return: 0 enabled signal dispatcher. See schedSignalDispatch() in libaitsched
*/	*/
inline int rpc_chkPktSession(rpc_sess_t p, rpc_sess_t s);	#define rpc_srv_DispatchSignal(x, y) schedSignalDispatch((x)->srv_root, (y))

	/* ----------------------------------------------------------------------- */

/*	/*
* rpc_addPktSession() - Prepare session into network format
*
* @p = packet session
* @s = host session
* return: -1 error or 0 ok
*/
inline int rpc_addPktSession(rpc_sess_t p, rpc_sess_t s);
/*
* rpc_register_srvPing() - Register ping service function	* rpc_register_srvPing() - Register ping service function
*	*
* @srv = RPC server instance	* @srv = RPC server instance
* return: -1 error or 0 ok	* return: -1 error or 0 ok
*/	*/
inline int rpc_register_srvPing(rpc_srv_t * __restrict srv);	int rpc_register_srvPing(rpc_srv_t * __restrict srv);
/*	/*
* rpc_register_srvServices() - Register internal service functions	* rpc_register_srvServices() - Register internal service functions
*	*
Line 282 int rpc_register_blobServices(rpc_srv_t * __restrict s	Line 184 int rpc_register_blobServices(rpc_srv_t * __restrict s
/*	/*
* rpc_srv_initServer() - Init & create RPC Server	* rpc_srv_initServer() - Init & create RPC Server
*	*
* @regProgID = ProgramID for authentication & recognition	* @InstID = Instance for authentication & recognition
* @regProcID = ProcessID for authentication & recognition
* @concurentClients = Concurent clients at same time to this server	* @concurentClients = Concurent clients at same time to this server
* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)	* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
* @csHost = Host name or address for bind server, if NULL any address	* @csHost = Host name or address for bind server, if NULL any address
* @Port = Port for bind server, if Port == 0 default port is selected	* @Port = Port for bind server, if Port == 0 default port is selected
	* @proto = Protocol, if == 0 choose SOCK_STREAM
* return: NULL == error or !=NULL bind and created RPC server instance	* return: NULL == error or !=NULL bind and created RPC server instance
*/	*/
rpc_srv_t *rpc_srv_initServer(unsigned int regProgID, unsigned char regProcID,	rpc_srv_t *rpc_srv_initServer(unsigned char InstID, int concurentClients, int netBuf,
int concurentClients, int netBuf,	const char *csHost, unsigned short Port, int proto);
const char *csHost, unsigned short Port);
/*	/*
* rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources	* rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
*	*
* @psrv = RPC Server instance	* @psrv = RPC Server instance
* return: none	* return: none
*/	*/
inline void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);	void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
/*	/*
* rpc_srv_loopServer() - Execute Main server loop and wait for clients requests	* rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
*	*
Line 307 inline void rpc_srv_endServer(rpc_srv_t ** __restrict	Line 208 inline void rpc_srv_endServer(rpc_srv_t ** __restrict
* return: -1 error or 0 ok, infinite loop ...	* return: -1 error or 0 ok, infinite loop ...
*/	*/
int rpc_srv_loopServer(rpc_srv_t * __restrict srv);	int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
#define rpc_srv_execServer(_srv, _sync) do { assert((_srv)); \	#define rpc_srv_execServer(_srv, _sync) \
if (!(_srv)->srv_kill) { \	do { assert((_srv)); \
pthread_create(&(_srv)->srv_tid, NULL, (void()(void*)) \	if (!(_srv)->srv_kill) { \
rpc_srv_loopServer, (_srv)); \	pthread_create(&(_srv)->srv_tid, NULL, (void()(void*)) \
if ((_sync)) \	rpc_srv_loopServer, (_srv)); \
pthread_join((_srv)->srv_tid, (void**) (_sync)); \	if ((_sync)) \
else \	pthread_join((_srv)->srv_tid, (void**) (_sync)); \
pthread_detach((_srv)->srv_tid); \	else \
} } while (0)	pthread_detach((_srv)->srv_tid); \
	} } while (0)
	#define rpc_srv_killServer(_srv) \
	(assert((_srv)), (_srv)->srv_blob.kill = 1, (_srv)->srv_kill = 1)

/*	/*
* rpc_srv_initBLOBServer() - Init & create BLOB Server	* rpc_srv_initBLOBServer() - Init & create BLOB Server
Line 332 int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv,	Line 236 int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv,
* @srv = RPC Server instance	* @srv = RPC Server instance
* return: none	* return: none
*/	*/
inline void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);	void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
/*	/*
* rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests	* rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
*	*
Line 340 inline void rpc_srv_endBLOBServer(rpc_srv_t * __restri	Line 244 inline void rpc_srv_endBLOBServer(rpc_srv_t * __restri
* return: -1 error or 0 ok, infinite loop ...	* return: -1 error or 0 ok, infinite loop ...
*/	*/
int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);	int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
#define rpc_srv_execBLOBServer(_srv) do { assert((_srv)); \	#define rpc_srv_execBLOBServer(_srv) \
if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \	do { assert((_srv)); \
pthread_create(&(_srv)->srv_blob.tid, NULL, \	if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
(void()(void*)) \	pthread_create(&(_srv)->srv_blob.tid, NULL, \
rpc_srv_loopBLOBServer, (_srv)); \	(void()(void*)) rpc_srv_loopBLOBServer, (_srv)); \
pthread_detach((_srv)->srv_blob.tid); \	pthread_detach((_srv)->srv_blob.tid); \
} \	} \
} while (0)	} while (0)

/*	/*
	* rpc_srv_initServer2() - Init & create layer2 RPC Server
	*
	* @InstID = Instance for authentication & recognition
	* @concurentClients = Concurent clients at same time to this server
	* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
	* @csIface = Interface name for bind server, if NULL first interface on host
	* return: NULL == error or !=NULL bind and created RPC server instance
	*/
	rpc_srv_t *rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf,
	const char *csIface);

	/*
	* rpc_srv_initServerExt() - Init & create pipe RPC Server
	*
	* @InstID = Instance for authentication & recognition
	* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
	* @fd = File descriptor
	* return: NULL == error or !=NULL bind and created RPC server instance
	*/
	rpc_srv_t *rpc_srv_initServerExt(u_char InstID, int netBuf, int fd);

	/*
* rpc_srv_registerCall() - Register call to RPC server	* rpc_srv_registerCall() - Register call to RPC server
*	*
* @srv = RPC Server instance	* @srv = RPC Server instance
Line 373 int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv,	Line 299 int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv,
* @tag = tag for function	* @tag = tag for function
* return: NULL not found call, !=NULL return call	* return: NULL not found call, !=NULL return call
*/	*/
inline rpc_func_t rpc_srv_getCall(rpc_srv_t __restrict srv, uint16_t tag);	rpc_func_t rpc_srv_getCall(rpc_srv_t __restrict srv, uint16_t tag);
/*	/*
* rpc_srv_execCall() Execute registered call from RPC server	* rpc_srv_execCall() Execute registered call from RPC server
*	*
Line 392 int rpc_srv_execCall(rpc_cli_t * __restrict cli, struc	Line 318 int rpc_srv_execCall(rpc_cli_t * __restrict cli, struc
*	*
* @srv = RPC Server instance	* @srv = RPC Server instance
* @len = BLOB length object	* @len = BLOB length object
	* @tout = BLOB live timeout in seconds
* return: NULL error or !=NULL allocated BLOB object	* return: NULL error or !=NULL allocated BLOB object
*/	*/
inline rpc_blob_t rpc_srv_blobCreate(rpc_srv_t __restrict srv, int len);	rpc_blob_t rpc_srv_blobCreate(rpc_srv_t __restrict srv, int len, int tout);
/*	/*
* rpc_srv_blobMap() - Map blob to memory region	* rpc_srv_blobMap() - Map blob to memory region
*	*
Line 402 inline rpc_blob_t rpc_srv_blobCreate(rpc_srv_t __re	Line 329 inline rpc_blob_t rpc_srv_blobCreate(rpc_srv_t __re
* @blob = Map to this BLOB element	* @blob = Map to this BLOB element
* return: -1 error or 0 ok	* return: -1 error or 0 ok
*/	*/
inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);	int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
/*	/*
* rpc_srv_blobUnmap() - Unmap blob memory region	* rpc_srv_blobUnmap() - Unmap blob memory region
*	*
* @blob = Mapped BLOB element	* @blob = Mapped BLOB element
* return: none	* return: none
*/	*/
inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);	void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
/*	/*
* rpc_srv_blobFree() - Free blob from disk & memory	* rpc_srv_blobFree() - Free blob from disk & memory
*	*
Line 417 inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict	Line 344 inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict
* @blob = Mapped BLOB element	* @blob = Mapped BLOB element
* return: -1 error or 0 ok	* return: -1 error or 0 ok
*/	*/
inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);	int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);

/*	/*
* rpc_srv_registerBLOB() - Register new BLOB to server	* rpc_srv_registerBLOB() - Register new BLOB to server
*	*
* @srv = RPC Server instance	* @srv = RPC Server instance
* @len = BLOB length	* @len = BLOB length
	* @tout = BLOB live timeout in seconds
* return: NULL error or new registered BLOB	* return: NULL error or new registered BLOB
*/	*/
rpc_blob_t rpc_srv_registerBLOB(rpc_srv_t __restrict srv, size_t len);	rpc_blob_t rpc_srv_registerBLOB(rpc_srv_t __restrict srv, size_t len, int tout);
/*	/*
* rpc_srv_unregisterBLOB() - Unregister BLOB from server	* rpc_srv_unregisterBLOB() - Unregister BLOB from server
*	*
Line 442 int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv,	Line 370 int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv,
* @var = hash for variable	* @var = hash for variable
* return: NULL not found, !=NULL return blob var	* return: NULL not found, !=NULL return blob var
*/	*/
inline rpc_blob_t rpc_srv_getBLOB(rpc_srv_t __restrict srv, uint32_t var);	rpc_blob_t rpc_srv_getBLOB(rpc_srv_t __restrict srv, uint32_t var);

/*	/*
* rpc_srv_sendBLOB() - Send mapped BLOB to client	* rpc_srv_sendBLOB() - Send mapped BLOB to client
Line 461 int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_b	Line 389 int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_b
*/	*/
int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);	int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);

/* CLIENT part of functions */

/*	/*
* rpc_cli_sendBLOB() - Send BLOB to server	* rpc_srv_Return() - Prepare IPC return answer to RPC client
*	*
* @cli = Client instance	* @c = RPC client
* @var = BLOB variable	* return: number of arguments in response
* @data = BLOB data
* return: -1 error, 0 ok, 1 remote error
*/	*/
int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void * __restrict data);	int rpc_srv_Return(rpc_cli_t *c);
/*
* rpc_cli_recvBLOB() - Receive BLOB from server
*
* @cli = Client instance
* @var = BLOB variable
* @data = BLOB data, must be io_free after use!
* return: -1 error, 0 ok, 1 remote error
*/
int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
/*
* rpc_cli_delBLOB() - Delete BLOB from server
*
* @cli = Client instance
* @var = BLOB variable
* return: -1 error, 0 ok, 1 remote error
*/
int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
/*
* rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
*
* @cli = Client instance
* @var = BLOB variable
* @data = BLOB data, must be io_free after use!
* return: -1 error, 0 ok, >0 remote error
*/
inline int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
void ** __restrict data);


/* RPC Client side functions */

/*
* rpc_cli_openClient() - Connect to RPC Server
*
* @ProgID = ProgramID for RPC session request
* @ProcID = ProcessID for RPC session request
* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
* @csHost = Host name or IP address for bind server
* @Port = Port for bind server, if Port == 0 default port is selected
* return: NULL == error or !=NULL connection to RPC server established
*/
rpc_cli_t *rpc_cli_openClient(unsigned int ProgID, unsigned char ProcID, int netBuf,
const char *csHost, unsigned short Port);
/*
* rpc_cli_closeClient() - Close connection to RPC server and free resources
*
* @cli = RPC Client session
* return: none
*/
void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
/*
* rpc_cli_execCall() - Execute RPC call
*
* @cli = RPC Client session
* @noreply = We not want RPC reply
* @tag = Function tag for execution
* @in_vars = IN RPC call array of rpc values, may be NULL
* @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with io_freeVars()
* return: -1 error or != -1 ok result
*/
int rpc_cli_execCall(rpc_cli_t *cli, int noreply, unsigned short tag,
array_t * __restrict in_vars, array_t ** __restrict out_vars);
/*
* rpc_cli_ping() - Ping RPC server
*
* @cli = connected client
* return: -1 error or !=-1 ping seq id
*/
inline int rpc_cli_ping(rpc_cli_t *cli);


/*
* rpc_cli_openBLOBClient() - Connect to BLOB Server
*
* @rpccli = RPC Client session
* @Port = Port for bind server, if Port == 0 default port is selected
* return: NULL == error or !=NULL connection to BLOB server established
*/
rpc_cli_t rpc_cli_openBLOBClient(rpc_cli_t __restrict rpccli, unsigned short Port);
/*
* rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
*
* @cli = BLOB Client session
* return: none
*/
void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);


#endif	#endif

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