1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitrpc.h,v 1.26 2015/01/21 21:17:05 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2015
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #ifndef __AITRPC_H
47: #define __AITRPC_H
48:
49:
50: #include <assert.h>
51: #include <stdlib.h>
52: #include <string.h>
53: #include <errno.h>
54: #include <sys/types.h>
55: #include <sys/param.h>
56: #if !defined(__NetBSD__)
57: #include <sys/limits.h>
58: #endif
59: #include <sys/socket.h>
60: #include <sys/queue.h>
61: #include <elwix.h>
62: #include <aitsched.h>
63:
64:
65: #define RPC_VERSION 8
66: #define RPC_DEFPORT 2611
67:
68: /* Additional ELWIX RPC supporting protocols */
69: #ifndef SOCK_STREAM
70: #define SOCK_STREAM 1 /* stream socket */
71: #endif
72: #ifndef SOCK_DGRAM
73: #define SOCK_DGRAM 2 /* datagram socket */
74: #endif
75: #ifndef SOCK_RAW
76: #define SOCK_RAW 3 /* raw-protocol interface */
77: #endif
78: #define SOCK_BPF 4 /* ethernet interface */
79: #define SOCK_EXT 5 /* bi-directional pipe interface */
80:
81: /* RPC call request flags */
82:
83: #define RPC_REPLY 0x0
84: #define RPC_NOREPLY 0x1
85:
86: /* RPC call I/O direction */
87:
88: #define RPC_REQ 0x0
89: #define RPC_ACK 0x1
90:
91: /* RPC builtin registed calls */
92:
93: #define CALL_TAG_MAX 65535
94:
95: #define CALL_SRVPING 65534
96:
97: #define CALL_SRVSHUTDOWN 65533
98: #define CALL_SRVCLIENTS 65532
99: #define CALL_SRVCALLS 65531
100: #define CALL_SRVSESSIONS 65530
101:
102: #define CALL_BLOBSHUTDOWN 65529
103: #define CALL_BLOBCLIENTS 65528
104: #define CALL_BLOBVARS 65527
105:
106: /* RPC signals */
107: #define SIGFBLOB 54
108:
109: /* RPC types */
110:
111: typedef enum {
112: ok, error, no, /* for blob reply */
113: get, set, unset /* for blob request */
114: } blob_cmd_type_t;
115:
116:
117: #define RPC_CALLBACK_CHECK_INPUT(x) do { \
118: assert((x)); \
119: if (!(x)) { \
120: rpc_SetErr(EINVAL, \
121: "Invalid callback parameters ..."); \
122: return -1; \
123: } \
124: } while (0)
125:
126:
127: /* RPC session identification */
128:
129: typedef struct {
130: #if BYTE_ORDER == LITTLE_ENDIAN
131: uint16_t sess_instance:8;
132: uint16_t sess_version:8;
133: #endif
134: #if BYTE_ORDER == BIG_ENDIAN
135: uint16_t sess_version:8;
136: uint16_t sess_instance:8;
137: #endif
138: } __packed rpc_sess_t; /* size == 2 bytes */
139:
140:
141: /* Server managment RPC functions ... */
142:
143: /* Network RPC packet - Client request */
144:
145: struct tagRPCCall {
146: rpc_sess_t call_session;
147:
148: uint32_t call_len;
149: uint16_t call_crc;
150:
151: union {
152: struct {
153: uint64_t flags;
154: } call_req;
155: struct {
156: int32_t ret;
157: int32_t eno;
158: } call_rep;
159: };
160:
161: uint16_t call_tag;
162: uint8_t call_io;
163: uint8_t call_argc;
164: ait_val_t call_argv[0];
165: } __packed; /* size == 20 bytes */
166: #define RPC_CHK_NOREPLY(x) (ntohl((u_long) (x)->call_req.flags) & RPC_NOREPLY)
167: #define RPC_SET_ERRNO(x, _v) ((x)->call_rep.eno = htonl((_v)))
168:
169: /* Network BLOB packet - Header */
170:
171: struct tagBLOBHdr {
172: rpc_sess_t hdr_session;
173: uint8_t hdr_cmd;
174: uint32_t hdr_var;
175: uint32_t hdr_len;
176: uint32_t hdr_ret;
177: uint8_t hdr_pad;
178: } __packed; /* size == 16 bytes */
179:
180: /* Network RPC client & server elements */
181:
182: /* RPC function registration element! */
183: typedef struct tagRPCFunc {
184: ait_val_t func_name;
185:
186: void *func_parent;
187:
188: SLIST_ENTRY(tagRPCFunc) func_next;
189: AVL_ENTRY(tagRPCFunc) func_node;
190: } rpc_func_t;
191: #define RPC_FUNC_SERVER(x) ((rpc_srv_t*) (x)->func_parent)
192:
193: /* Tree root node */
194: typedef struct tagRPCFuncs {
195: pthread_mutex_t mtx;
196:
197: struct tagRPCFunc *slh_first;
198: struct tagRPCFunc *avlh_root;
199: } rpc_funcs_t;
200: #define RPC_FUNCS_LOCK(x) pthread_mutex_lock(&(x)->mtx)
201: #define RPC_FUNCS_UNLOCK(x) pthread_mutex_unlock(&(x)->mtx)
202: #define RPC_FUNCS_ISEMPTY(x) AVL_EMPTY((x))
203:
204:
205: /* BLOB register element */
206: typedef struct tagBLOB {
207: uint32_t blob_var; /* BLOB id */
208:
209: size_t blob_len; /* size of allocated BLOB data */
210: void *blob_data; /* mapped BLOB data */
211:
212: TAILQ_ENTRY(tagBLOB) blob_node;
213: } rpc_blob_t;
214:
215:
216: typedef struct {
217: int cli_id; /* slot id */
218: int cli_sock; /* socket fd */
219: sockaddr_t cli_sa; /* host address */
220: ait_val_t cli_buf; /* network buffer */
221:
222: array_t *cli_vars; /* function return variables */
223:
224: void *cli_parent; /* pointer to parent rpc_srv_t for server or to rpc_sess_t for client */
225: } rpc_cli_t;
226: #define RPC_RETVARS(x) ((x)->cli_vars)
227: #define RPC_SRV_SERVER(x) ((rpc_srv_t*) (x)->cli_parent)
228: #define RPC_CLI_SESSION(x) ((rpc_sess_t*) (x)->cli_parent)
229:
230: typedef struct {
231: rpc_sess_t srv_session; /* RPC session registration info */
232: int srv_netbuf; /* size of network buffer */
233: int srv_proto; /* Server protocol */
234:
235: pthread_t srv_tid; /* RPC exec pthread */
236: sched_root_task_t *srv_root; /* RPC server scheduler */
237: intptr_t srv_kill; /* Scheduler condition variable */
238:
239: rpc_cli_t srv_server; /* RPC server socket */
240: array_t *srv_clients; /* connected rpc client sockets */
241:
242: rpc_funcs_t srv_funcs; /* RPC functions */
243:
244: struct {
245: pthread_t tid; /* BLOB exec pthread */
246: sched_root_task_t *root; /* BLOB server scheduler */
247: intptr_t kill; /* BLOB server state: ==0 disable | !=0 enable */
248:
249: ait_val_t dir; /* BLOB states directory */
250:
251: rpc_cli_t server; /* BLOB server socket */
252: array_t *clients; /* connected blob client sockets */
253:
254: TAILQ_HEAD(, tagBLOB) blobs; /* registered blob variables list */
255: } srv_blob;
256: } rpc_srv_t;
257:
258:
259: /*
260: * (*rpc_callback_t)() - Callback type definition for RPC call in server process
261: *
262: * @arg1 = RPC client
263: * @arg2 = RPC packet header
264: * @arg3 = input array with values from RPC call execution request
265: * return: -1 error or >-1 success execution
266: */
267: typedef int (*rpc_callback_t)(rpc_cli_t *, struct tagRPCCall *, array_t *);
268:
269: #define RPC_CALL_DEFINE(x) int (x)(rpc_cli_t*, struct tagRPCCall*, array_t*)
270: #define RPC_CALL_ARGS(arg1, arg2, arg3) rpc_cli_t* arg1, struct tagRPCCall* arg2, array_t* arg3
271: #define RPC_CALL_STDARGS RPC_CALL_ARGS(cli, rpc, iv)
272:
273:
274: /* ----------------------------------------------------------------------- */
275:
276: /* Error support functions */
277:
278: // rpc_GetErrno() Get error code of last operation
279: int rpc_GetErrno();
280: // rpc_GetError() Get error text of last operation
281: const char *rpc_GetError();
282: // rpc_SetErr() Set error to variables for internal use!!!
283: void rpc_SetErr(int eno, char *estr, ...);
284:
285:
286:
287: /*
288: * rpc_Read() - RPC read operation
289: *
290: * @sock = socket
291: * @type = type of socket
292: * @flags = receive flags
293: * @sa = check client address, if you use udp protocol
294: * @buf = buffer
295: * @blen = buffer length
296: * return: -1 error, 0 EOF or or >0 readed bytes into buffer
297: */
298: ssize_t rpc_Read(int sock, int type, int flags, sockaddr_t * __restrict sa,
299: unsigned char * __restrict buf, size_t blen);
300: /*
301: * rpc_Write() - RPC write operation
302: *
303: * @sock = socket
304: * @type = type of socket
305: * @flags = send flags
306: * @sa = send to client address, if you use udp protocol
307: * @buf = buffer
308: * @blen = buffer length
309: * return: -1 error, 0 EOF or >0 written bytes into buffer
310: */
311: ssize_t rpc_Write(int sock, int type, int flags, sockaddr_t * __restrict sa,
312: unsigned char * __restrict buf, size_t blen);
313:
314: /*
315: * rpc_chkPktSession() - Check RPC session
316: *
317: * @p = packet session
318: * @s = active session
319: * return: -1, 1, 2, 3 are errors or 0 ok
320: */
321: int rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s);
322: /*
323: * rpc_addPktSession() - Prepare session into network format
324: *
325: * @p = packet session
326: * @s = host session
327: * return: -1 error or 0 ok
328: */
329: int rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s);
330: /*
331: * rpc_register_srvPing() - Register ping service function
332: *
333: * @srv = RPC server instance
334: * return: -1 error or 0 ok
335: */
336: int rpc_register_srvPing(rpc_srv_t * __restrict srv);
337: /*
338: * rpc_register_srvServices() - Register internal service functions
339: *
340: * @srv = RPC server instance
341: * return: -1 error or 0 ok
342: */
343: int rpc_register_srvServices(rpc_srv_t * __restrict srv);
344: /*
345: * rpc_register_blobServices() - Register internal service functions
346: *
347: * @srv = RPC server instance
348: * return: -1 error or 0 ok
349: */
350: int rpc_register_blobServices(rpc_srv_t * __restrict srv);
351:
352:
353: /* RPC Server side functions */
354:
355: /*
356: * rpc_srv_initServer() - Init & create RPC Server
357: *
358: * @InstID = Instance for authentication & recognition
359: * @concurentClients = Concurent clients at same time to this server
360: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
361: * @csHost = Host name or address for bind server, if NULL any address
362: * @Port = Port for bind server, if Port == 0 default port is selected
363: * @proto = Protocol, if == 0 choose SOCK_STREAM
364: * return: NULL == error or !=NULL bind and created RPC server instance
365: */
366: rpc_srv_t *rpc_srv_initServer(unsigned char InstID, int concurentClients, int netBuf,
367: const char *csHost, unsigned short Port, int proto);
368: /*
369: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
370: *
371: * @psrv = RPC Server instance
372: * return: none
373: */
374: void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
375: /*
376: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
377: *
378: * @srv = RPC Server instance
379: * return: -1 error or 0 ok, infinite loop ...
380: */
381: int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
382: #define rpc_srv_execServer(_srv, _sync) \
383: do { assert((_srv)); \
384: if (!(_srv)->srv_kill) { \
385: pthread_create(&(_srv)->srv_tid, NULL, (void*(*)(void*)) \
386: rpc_srv_loopServer, (_srv)); \
387: if ((_sync)) \
388: pthread_join((_srv)->srv_tid, (void**) (_sync)); \
389: else \
390: pthread_detach((_srv)->srv_tid); \
391: } } while (0)
392: #define rpc_srv_killServer(_srv) \
393: (assert((_srv)), (_srv)->srv_blob.kill = 1, (_srv)->srv_kill = 1)
394:
395: /*
396: * rpc_srv_initBLOBServer() - Init & create BLOB Server
397: *
398: * @srv = RPC server instance
399: * @Port = Port for bind server, if Port == 0 default port is selected
400: * @diskDir = Disk place for BLOB file objects
401: * return: -1 == error or 0 bind and created BLOB server instance
402: */
403: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, unsigned short Port, const char *diskDir);
404: /*
405: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
406: *
407: * @srv = RPC Server instance
408: * return: none
409: */
410: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
411: /*
412: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
413: *
414: * @srv = RPC Server instance
415: * return: -1 error or 0 ok, infinite loop ...
416: */
417: int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
418: #define rpc_srv_execBLOBServer(_srv) \
419: do { assert((_srv)); \
420: if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
421: pthread_create(&(_srv)->srv_blob.tid, NULL, \
422: (void*(*)(void*)) rpc_srv_loopBLOBServer, (_srv)); \
423: pthread_detach((_srv)->srv_blob.tid); \
424: } \
425: } while (0)
426:
427: /*
428: * rpc_srv_initServer2() - Init & create layer2 RPC Server
429: *
430: * @InstID = Instance for authentication & recognition
431: * @concurentClients = Concurent clients at same time to this server
432: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
433: * @csIface = Interface name for bind server, if NULL first interface on host
434: * return: NULL == error or !=NULL bind and created RPC server instance
435: */
436: rpc_srv_t *rpc_srv_initServer2(u_char InstID, int concurentClients, int netBuf,
437: const char *csIface);
438:
439: /*
440: * rpc_srv_initServerExt() - Init & create pipe RPC Server
441: *
442: * @InstID = Instance for authentication & recognition
443: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
444: * @fd = File descriptor
445: * return: NULL == error or !=NULL bind and created RPC server instance
446: */
447: rpc_srv_t *rpc_srv_initServerExt(u_char InstID, int netBuf, int fd);
448:
449: /*
450: * rpc_srv_registerCall() - Register call to RPC server
451: *
452: * @srv = RPC Server instance
453: * @tag = Function tag
454: * @funcaddr = Function address
455: * return: -1 error, 0 already registered tag or 1 register ok
456: */
457: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, unsigned short tag, void *funcaddr);
458: /*
459: * rpc_srv_unregisterCall() - Unregister call from RPC server
460: *
461: * @srv = RPC Server instance
462: * @tag = Function tag
463: * return: -1 error, 0 not found call, 1 unregister ok
464: */
465: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, unsigned short tag);
466: /*
467: * rpc_srv_getCall() - Get registered call from RPC server
468: *
469: * @srv = RPC Server instance
470: * @tag = tag for function
471: * return: NULL not found call, !=NULL return call
472: */
473: rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag);
474: /*
475: * rpc_srv_execCall() Execute registered call from RPC server
476: *
477: * @cli = RPC client
478: * @rpc = IN RPC call structure
479: * @funcname = Execute RPC function
480: * @args = IN RPC calling arguments from RPC client
481: * return: -1 error, !=-1 ok
482: */
483: int rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
484: ait_val_t funcname, array_t * __restrict args);
485:
486:
487: /*
488: * rpc_srv_blobCreate() - Create and map blob to memory region and return object
489: *
490: * @srv = RPC Server instance
491: * @len = BLOB length object
492: * @tout = BLOB live timeout in seconds
493: * return: NULL error or !=NULL allocated BLOB object
494: */
495: rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len, int tout);
496: /*
497: * rpc_srv_blobMap() - Map blob to memory region
498: *
499: * @srv = RPC Server instance
500: * @blob = Map to this BLOB element
501: * return: -1 error or 0 ok
502: */
503: int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
504: /*
505: * rpc_srv_blobUnmap() - Unmap blob memory region
506: *
507: * @blob = Mapped BLOB element
508: * return: none
509: */
510: void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
511: /*
512: * rpc_srv_blobFree() - Free blob from disk & memory
513: *
514: * @srv = RPC Server instance
515: * @blob = Mapped BLOB element
516: * return: -1 error or 0 ok
517: */
518: int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
519:
520: /*
521: * rpc_srv_registerBLOB() - Register new BLOB to server
522: *
523: * @srv = RPC Server instance
524: * @len = BLOB length
525: * @tout = BLOB live timeout in seconds
526: * return: NULL error or new registered BLOB
527: */
528: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len, int tout);
529: /*
530: * rpc_srv_unregisterBLOB() - Unregister BLOB from server
531: *
532: * @srv = RPC Server instance
533: * @var = BLOB Variable for unregister
534: * return: -1 error, 0 not found call, 1 unregister ok
535: */
536: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
537: /*
538: * rpc_srv_getBLOB() - Get registered BLOB
539: *
540: * @srv = RPC Server instance
541: * @var = hash for variable
542: * return: NULL not found, !=NULL return blob var
543: */
544: rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
545:
546: /*
547: * rpc_srv_sendBLOB() - Send mapped BLOB to client
548: *
549: * @cli = Client instance
550: * @blob = Mapped BLOB element
551: * return: -1 error, 0 ok
552: */
553: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
554: /*
555: * rpc_srv_recvBLOB() - Receive BLOB from client
556: *
557: * @cli = Client instance
558: * @blob = Mapped BLOB element
559: * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
560: */
561: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
562:
563: /* CLIENT part of functions */
564:
565: /*
566: * rpc_cli_sendBLOB() - Send BLOB to server
567: *
568: * @cli = Client instance
569: * @var = BLOB variable
570: * @data = BLOB data
571: * @tout = BLOB live on server timeout in seconds, if =0 default timeout
572: * return: -1 error, 0 ok, 1 remote error
573: */
574: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
575: void * __restrict data, int tout);
576: /*
577: * rpc_cli_recvBLOB() - Receive BLOB from server
578: *
579: * @cli = Client instance
580: * @var = BLOB variable
581: * @data = BLOB data, must be e_free after use!
582: * return: -1 error, 0 ok, 1 remote error
583: */
584: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
585: /*
586: * rpc_cli_delBLOB() - Delete BLOB from server
587: *
588: * @cli = Client instance
589: * @var = BLOB variable
590: * return: -1 error, 0 ok, 1 remote error
591: */
592: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
593: /*
594: * rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
595: *
596: * @cli = Client instance
597: * @var = BLOB variable
598: * @data = BLOB data, must be e_free after use!
599: * return: -1 error, 0 ok, >0 remote error
600: */
601: int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
602: void ** __restrict data);
603:
604:
605: /* RPC Client side functions */
606:
607: /*
608: * rpc_cli_openClient() - Connect to RPC Server
609: *
610: * @InstID = InstID for RPC session request
611: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
612: * @csHost = Host name or IP address for bind server
613: * @Port = Port for bind server, if Port == 0 default port is selected
614: * @proto = Protocol, if == 0 choose SOCK_STREAM
615: * return: NULL == error or !=NULL connection to RPC server established
616: */
617: rpc_cli_t *rpc_cli_openClient(unsigned char InstID, int netBuf,
618: const char *csHost, unsigned short Port, int proto);
619: /*
620: * rpc_cli_reconnectClient() - Reconnecting client to RPC server
621: *
622: * @cli = RPC Client session
623: * return: -1 error or 0 ok
624: */
625: int rpc_cli_reconnectClient(rpc_cli_t * __restrict cli);
626: /*
627: * rpc_cli_closeClient() - Close connection to RPC server and free resources
628: *
629: * @cli = RPC Client session
630: * return: none
631: */
632: void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
633: /*
634: * rpc_pkt_Send() - Send RPC packet
635: *
636: * @sock = Socket
637: * @type = Type of socket
638: * @sa = Server address
639: * @pkt = RPC packet
640: * @len = Length of packet
641: * return: -1 error, 0 EOF or >0 sended bytes
642: */
643: int rpc_pkt_Send(int sock, int type, sockaddr_t * __restrict sa,
644: ait_val_t * __restrict pkt, int len);
645: /*
646: * rpc_pkt_Receive() - Receive RPC packet
647: *
648: * @sock = Socket
649: * @type = Type of socket
650: * @sa = Server address
651: * @pkt = RPC packet
652: * return: -1 error, 0 EOF or >0 received bytes
653: */
654: int rpc_pkt_Receive(int sock, int type, sockaddr_t * __restrict sa,
655: ait_val_t * __restrict pkt);
656: /*
657: * rpc_pkt_Request() - Build RPC Request packet
658: *
659: * @pkt = Packet buffer
660: * @sess = RPC session info
661: * @tag = Function tag for execution
662: * @vars = Function argument array of values, may be NULL
663: * @noreply = We not want RPC reply
664: * @nocrc = Without CRC calculation
665: * return: -1 error or != -1 prepared bytes into packet
666: */
667: int rpc_pkt_Request(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
668: unsigned short tag, array_t * __restrict vars, int noreply, int nocrc);
669: /*
670: * rpc_pkt_Replay() - Decode RPC Replay packet
671: *
672: * @pkt = Packet buffer
673: * @sess = RPC session info, if =NULL don't check session
674: * @tag = Function tag
675: * @vars = Function argument array of values, may be NULL
676: * @nocrc = Without CRC calculation
677: * return: -1 error or != -1 return value from function
678: */
679: int rpc_pkt_Replay(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
680: unsigned short tag, array_t ** __restrict vars, int nocrc);
681: /*
682: * rpc_cli_execCall() - Execute RPC call
683: *
684: * @cli = RPC Client session
685: * @noreply = We not want RPC reply
686: * @tag = Function tag for execution
687: * @in_vars = IN function argument array of values, may be NULL
688: * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with ait_freeVars()
689: * return: -1 error, 0 ok result or 1 closed rpc connection
690: */
691: int rpc_cli_execCall(rpc_cli_t *cli, int noreply, unsigned short tag,
692: array_t * __restrict in_vars, array_t ** __restrict out_vars);
693: /*
694: * rpc_cli_freeCall() - Free resouce allocated by RPC call
695: *
696: * @out_vars = Returned array with variables from RPC call
697: * return: none
698: */
699: void rpc_cli_freeCall(array_t ** __restrict out_vars);
700: /*
701: * rpc_cli_ping() - Ping RPC server
702: *
703: * @cli = connected client
704: * return: -1 error or !=-1 ping seq id
705: */
706: int rpc_cli_ping(rpc_cli_t *cli);
707:
708:
709: /*
710: * rpc_cli_openBLOBClient() - Connect to BLOB Server
711: *
712: * @rpccli = RPC Client session
713: * @Port = Port for bind server, if Port == 0 default port is selected
714: * return: NULL == error or !=NULL connection to BLOB server established
715: */
716: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, unsigned short Port);
717: /*
718: * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
719: *
720: * @cli = BLOB Client session
721: * return: none
722: */
723: void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);
724:
725:
726: /*
727: * rpc_cli_openClient2() - Connect to layer2 RPC Server
728: *
729: * @InstID = InstID for RPC session request
730: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
731: * @csIface = Interface name for bind client, if NULL first interface on host
732: * @csHost = Host ethernet address
733: * return: NULL == error or !=NULL connection to RPC server established
734: */
735: rpc_cli_t *rpc_cli_openClient2(u_char InstID, int netBuf,
736: const char *csIface, const char *csHost);
737: /*
738: * rpc_cli_closeClient2() - Close layer2 connection to RPC server and free resources
739: *
740: * @cli = RPC Client session
741: * return: none
742: */
743: void rpc_cli_closeClient2(rpc_cli_t ** __restrict cli);
744:
745:
746: /*
747: * rpc_cli_openClientExt() - Connect to pipe RPC Server
748: *
749: * @InstID = InstID for RPC session request
750: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
751: * @fd = File descriptor
752: * return: NULL == error or !=NULL connection to RPC server established
753: */
754: rpc_cli_t *rpc_cli_openClientExt(u_char InstID, int netBuf, int fd);
755: /*
756: * rpc_cli_closeClientExt() - Close pipe connection to RPC server and free resources
757: *
758: * @cli = RPC Client session
759: * return: none
760: */
761: void rpc_cli_closeClientExt(rpc_cli_t ** __restrict cli);
762:
763:
764: #endif
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