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 1.2.4.2 2011/08/18 19:04:10 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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 <sys/types.h>
54: #include <sys/param.h>
55: #if !defined(__NetBSD__)
56: #include <sys/limits.h>
57: #endif
58: #include <sys/socket.h>
59:
60:
61: #define RPC_VERSION 1
62: #define RPC_DEFPORT 2611
63:
64:
65: /* RPC builtin registed calls */
66:
67: #define CALL_BLOBSHUTDOWN "rpcBLOBServerShutdown"
68: #define CALL_BLOBCLIENTS "rpcBLOBServerClients"
69: #define CALL_BLOBVARS "rpcBLOBServerVars"
70: #define CALL_BLOBSTATE "rpcBLOBServerState"
71:
72: #define CALL_SRVSHUTDOWN "rpcServerShutdown"
73: #define CALL_SRVCLIENTS "rpcServerClients"
74: #define CALL_SRVCALLS "rpcServerCalls"
75: #define CALL_SRVSESSIONS "rpcServerSessions"
76:
77:
78: /* RPC types */
79:
80: typedef enum {
81: empty, // empty -> variable is not set
82: buffer, string, blob, // buffer -> uint8_t*; string -> int8_t*; blob -> void*(+socket);
83: size, offset, datetime, // size -> size_t; offset -> off_t; datetime -> time_t;
84: real, bigreal, // real -> float; bigreal -> double;
85: u8, u16, u32, u64, // unsigned integers ...
86: i8, i16, i32, i64 // integers ...
87: } rpc_type_t;
88:
89: typedef enum {
90: disable, enable, // for blob.state
91: ok, error, // for blob reply
92: get, set, unset // for blob request
93: } cmd_type_t;
94:
95: /* RPC value */
96:
97: typedef struct {
98: rpc_type_t val_type;
99: size_t val_len;
100: union {
101: uint8_t *buffer;
102: int8_t *string;
103: uint32_t blob;
104: size_t size;
105: off_t offset;
106: time_t datetime;
107: float real;
108: double bigreal;
109: uint8_t u8;
110: uint16_t u16;
111: uint32_t u32;
112: uint64_t u64;
113: int8_t i8;
114: int16_t i16;
115: int32_t i32;
116: int64_t i64;
117: } val;
118: } __packed rpc_val_t;
119:
120: #define RPC_TYPE_VAL(vl) ((vl)->val_type)
121: #define RPC_LEN_VAL(vl) ((vl)->val_len)
122: #define RPC_BLOB_CHUNKS(vl, n) ((vl)->val_len / (n) + ((vl)->val_len % (n)) ? 1 : 0)
123: #define RPC_EMPTY_VAL(vl) ((vl)->val_type == empty)
124:
125: #define RPC_GET_BUF(vl) (assert((vl)->val_type == buffer), (vl)->val.buffer)
126: #define RPC_GET_STR(vl) (assert((vl)->val_type == string), (vl)->val.string)
127: #define RPC_GET_BLOB(vl) (assert((vl)->val_type == blob), (vl)->val.blob)
128: #define RPC_GET_SIZE(vl) (assert((vl)->val_type == size), (vl)->val.size)
129: #define RPC_GET_OFF(vl) (assert((vl)->val_type == offset), (vl)->val.offset)
130: #define RPC_GET_TIME(vl) (assert((vl)->val_type == datetime), (vl)->val.datetime)
131: #define RPC_GET_REAL(vl) (assert((vl)->val_type == real), (vl)->val.real)
132: #define RPC_GET_BREAL(vl) (assert((vl)->val_type == bigreal), (vl)->val.bigreal)
133: #define RPC_GET_U8(vl) (assert((vl)->val_type == u8), (vl)->val.u8)
134: #define RPC_GET_U16(vl) (assert((vl)->val_type == u16), (vl)->val.u16)
135: #define RPC_GET_U32(vl) (assert((vl)->val_type == u32), (vl)->val.u32)
136: #define RPC_GET_U64(vl) (assert((vl)->val_type == u64), (vl)->val.u64)
137: #define RPC_GET_I8(vl) (assert((vl)->val_type == i8), (vl)->val.i8)
138: #define RPC_GET_I16(vl) (assert((vl)->val_type == i16), (vl)->val.i16)
139: #define RPC_GET_I32(vl) (assert((vl)->val_type == i32), (vl)->val.i32)
140: #define RPC_GET_I64(vl) (assert((vl)->val_type == i64), (vl)->val.i64)
141:
142: #define RPC_SET_BUF(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val.buffer = malloc(l); \
143: if (val->val.buffer) { \
144: val->val_type = buffer; val->val_len = l; \
145: memcpy(val->val.buffer, v, l); \
146: } } while (0)
147: #define RPC_SET_STR(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val.string = (int8_t*) strdup(v); \
148: if (val->val.string) { \
149: val->val_type = string; val->val_len = strlen(v) + 1; \
150: } } while (0)
151: #define RPC_SET_BLOB(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val_type = blob; \
152: val->val.blob = v; val->val_len = l; } while (0)
153: #define RPC_SET_BLOB2(vl, b) do { rpc_val_t *val = (vl); assert(val); assert(b); val->val_type = blob; \
154: val->val.blob = b->blob_var; val->val_len = b->blob_len; } while (0)
155: #define RPC_SET_SIZE(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = size; val->val.size = v; \
156: val->val_len = sizeof(size_t); } while (0)
157: #define RPC_SET_OFF(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = offset; val->val.offset = v; \
158: val->val_len = sizeof(off_t); } while (0)
159: #define RPC_SET_TIME(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = datetime; val->val.datetime = v; \
160: val->val_len = sizeof(time_t); } while (0)
161: #define RPC_SET_REAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = real; val->val.real = v; \
162: val->val_len = sizeof(float); } while (0)
163: #define RPC_SET_BREAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = bigreal; val->val.bigreal = v; \
164: val->val_len = sizeof(double); } while (0)
165: #define RPC_SET_U8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u8; val->val.u8 = v; \
166: val->val_len = sizeof(uint8_t); } while (0)
167: #define RPC_SET_U16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u16; val->val.u16 = v; \
168: val->val_len = sizeof(uint16_t); } while (0)
169: #define RPC_SET_U32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u32; val->val.u32 = v; \
170: val->val_len = sizeof(uint32_t); } while (0)
171: #define RPC_SET_U64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u64; val->val.u64 = v; \
172: val->val_len = sizeof(uint64_t); } while (0)
173: #define RPC_SET_I8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i8; val->val.i8 = v; \
174: val->val_len = sizeof(int8_t); } while (0)
175: #define RPC_SET_I16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i16; val->val.i16 = v; \
176: val->val_len = sizeof(int16_t); } while (0)
177: #define RPC_SET_I32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i32; val->val.i32 = v; \
178: val->val_len = sizeof(int32_t); } while (0)
179: #define RPC_SET_I64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i64; val->val.i64 = v; \
180: val->val_len = sizeof(int64_t); } while (0)
181:
182: #define RPC_FREE_VAL(vl) do { rpc_val_t *val = (vl); assert(val); \
183: if (val->val_type == buffer && val->val.buffer) { \
184: free(val->val.buffer); \
185: val->val.buffer = NULL; \
186: } \
187: if (val->val_type == string && val->val.string) { \
188: free(val->val.string); \
189: val->val.string = NULL; \
190: } \
191: val->val_type = val->val_len = 0; \
192: } while (0)
193:
194:
195: #define RPC_CALLBACK_CHECK_INPUT(x) do { \
196: if (!x) { \
197: rpc_SetErr(22, "Error:: invalid callback parameters ...\n"); \
198: return -1; \
199: } \
200: } while (0)
201: #define RPC_CALLBACK_CHK_ARGS(f, n) do { \
202: RPC_CALLBACK_CHECK_INPUT(f); \
203: if (f && f->func_args != n) { \
204: rpc_SetErr(22, "Error:: different number of arguments!\n"); \
205: return -1; \
206: } \
207: } while (0)
208:
209:
210: /* RPC session identification */
211:
212: typedef struct {
213: uint8_t sess_version;
214: uint32_t sess_program;
215: uint32_t sess_process;
216: } __packed rpc_sess_t;
217:
218:
219: /* Server managment RPC functions ... */
220:
221: // RPC function registration element!
222: typedef struct tagRPCFunc {
223: uint16_t func_tag;
224: uint32_t func_hash;
225: int8_t func_file[MAXPATHLEN];
226: int8_t func_name[UCHAR_MAX + 1];
227:
228: int8_t func_args;
229: rpc_val_t *func_vals;
230:
231: void *func_parent;
232: struct tagRPCFunc *func_next;
233: } rpc_func_t;
234:
235:
236: /* Network RPC packet - Client request */
237:
238: struct tagRPCCall {
239: rpc_sess_t call_session;
240: uint16_t call_tag;
241: uint32_t call_hash;
242: uint8_t call_argc;
243: } __packed;
244:
245: /* Network RPC packet - Server response */
246:
247: struct tagRPCRet {
248: rpc_sess_t ret_session;
249: uint16_t ret_tag;
250: uint32_t ret_hash;
251: int32_t ret_retcode;
252: int32_t ret_errno;
253: uint8_t ret_argc;
254: } __packed;
255:
256: /* Network BLOB packet - Header */
257:
258: struct tagBLOBHdr {
259: rpc_sess_t hdr_session;
260: uint8_t hdr_cmd;
261: uint32_t hdr_var;
262: uint32_t hdr_len;
263: uint32_t hdr_ret;
264: } __packed;
265:
266: /* Network RPC client & server elements */
267:
268: typedef struct {
269: struct sockaddr cli_sa; // host info
270: int cli_sock; // socket fd
271: int cli_type; // socket type
272: pthread_t cli_tid; // TID of thread
273:
274: void *cli_parent; // pointer to parent rpc_srv_t for server or to rpc_sess_t for client
275: } rpc_cli_t;
276:
277:
278: // BLOB registration element!
279: typedef struct tagBLOB {
280: uint32_t blob_var;
281:
282: size_t blob_len; // size of allocated BLOB data
283: void *blob_data; // BLOB data
284:
285: struct tagBLOB *blob_next;
286: } rpc_blob_t;
287:
288: typedef struct {
289: rpc_sess_t srv_session; // RPC session registration info
290: int srv_numcli; // maximum concurent client connections
291:
292: rpc_cli_t srv_server; // RPC server socket
293: rpc_cli_t *srv_clients; // connected rpc client sockets
294:
295: rpc_func_t *srv_funcs; // registered functions list
296:
297: pthread_mutex_t srv_mtx;
298:
299: struct {
300: int state; // BLOB server state: ==0 disable | !=0 enable
301: char dir[UCHAR_MAX + 1];
302:
303: rpc_cli_t server; // BLOB server socket
304: rpc_cli_t *clients; // connected blob client sockets
305:
306: rpc_blob_t *blobs; // registered blob variables list
307:
308: pthread_mutex_t mtx;
309: } srv_blob;
310: } rpc_srv_t;
311:
312:
313: /*
314: * (*rpc_callback_t)() Callback type definition for RPC call in server process
315: * @arg1 = current execution RPC call function
316: * @arg2 = number of items in input array from call request
317: * @arg3 = input array with values from RPC call execution request
318: * return: -1 error or >-1 success execution
319: */
320: typedef int (*rpc_callback_t)(rpc_func_t *, int, rpc_val_t *);
321:
322:
323: // -----------------------------------------------------------------------
324:
325: /* Error support functions */
326:
327: // cli_GetErrno() Get error code of last operation
328: inline int cli_GetErrno();
329: // cli_GetError() Get error text of last operation
330: inline const char *cli_GetError();
331:
332:
333: /* RPC Server side functions */
334:
335: /*
336: * rpc_srv_initServer() Init & create RPC Server
337: * @regProgID = ProgramID for authentication & recognition
338: * @regProcID = ProcessID for authentication & recognition
339: * @concurentClients = Concurent clients at same time to this server
340: * @sockType = Socket type, like SOCK_STREAM, SOCK_DGRAM or SOCK_RAW
341: * @family = Family type, AF_INET, AF_INET6 or AF_LOCAL
342: * @csHost = Host name or address for bind server, if NULL any address
343: * @Port = Port for bind server, if Port == 0 default port is selected
344: * return: NULL == error or !=NULL bind and created RPC server instance
345: */
346: rpc_srv_t *rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients,
347: int sockType, u_short family, const char *csHost, u_short Port);
348: /*
349: * rpc_srv_endServer() Destroy RPC server, close all opened sockets and free resources
350: * @srv = RPC Server instance
351: * return: none
352: */
353: void rpc_srv_endServer(rpc_srv_t * __restrict srv);
354: /*
355: * rpc_srv_execServer() Execute Main server loop and wait for clients requests
356: * @srv = RPC Server instance
357: * return: -1 error or 0 ok, infinite loop ...
358: */
359: int rpc_srv_execServer(rpc_srv_t * __restrict srv);
360:
361: /*
362: * rpc_srv_initBLOBServer() Init & create BLOB Server
363: * @Port = Port for bind server, if Port == 0 default port is selected
364: * @diskDir = Disk place for BLOB file objects
365: * return: -1 == error or 0 bind and created BLOB server instance
366: */
367: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir);
368: /*
369: * rpc_srv_endBLOBServer() Destroy BLOB server, close all opened sockets and free resources
370: * @srv = RPC Server instance
371: * return: none
372: */
373: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
374: /*
375: * rpc_srv_execBLOBServer() Execute Main BLOB server loop and wait for clients requests
376: * @srv = RPC Server instance
377: * return: -1 error or 0 ok, infinite loop ...
378: */
379: int rpc_srv_execBLOBServer(rpc_srv_t * __restrict srv);
380:
381: /*
382: * rpc_srv_registerCall() Register call to RPC server
383: * @srv = RPC Server instance
384: * @csModule = Module name, if NULL self binary
385: * @csFunc = Function name
386: * @args = Number of return function arguments, use for restriction case!
387: * return: -1 error or 0 register ok
388: */
389: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc,
390: unsigned char args);
391: /*
392: * rpc_srv_unregisterCall() Unregister call from RPC server
393: * @srv = RPC Server instance
394: * @csModule = Module name, if NULL self binary
395: * @csFunc = Function name
396: * return: -1 error, 0 not found call, 1 unregister ok
397: */
398: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
399: /*
400: * rpc_srv_getFunc() Get registered call from RPC server by Name
401: * @srv = RPC Server instance
402: * @csModule = Module name, if NULL self binary
403: * @csFunc = Function name
404: * return: NULL not found call, !=NULL return call
405: */
406: rpc_func_t *rpc_srv_getFunc(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
407: /*
408: * rpc_srv_getCall() Get registered call from RPC server
409: * @srv = RPC Server instance
410: * @tag = tag for function
411: * @hash = hash for function
412: * return: NULL not found call, !=NULL return call
413: */
414: inline rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag, uint32_t hash);
415: /*
416: * rpc_srv_execCall() Execute registered call from RPC server
417: * @call = Register RPC call
418: * @rpc = IN RPC call structure
419: * @args = IN RPC call array of rpc values
420: * return: -1 error, !=-1 ok
421: */
422: int rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
423: rpc_val_t * __restrict args);
424:
425:
426: /*
427: * rpc_srv_retValsCall() Declare return variables for RPC call and zeroed values
428: (for safe handling return values, use this!)
429: * @call = RPC function call
430: * @return_vals = Number of return variables
431: * return: NULL error, !=NULL array with return values for RPC call with return_vals items
432: */
433: inline rpc_val_t *rpc_srv_retValsCall(rpc_func_t * __restrict call, int return_vals);
434: /*
435: * rpc_srv_declValsCall() Declare return variables for RPC call,
436: if already allocated memory for RPC call return values
437: function reallocate used space with return_vals count elements
438: * @call = RPC function call
439: * @return_vals = Number of return variables
440: * return: -1 error, !=-1 ok
441: */
442: inline int rpc_srv_declValsCall(rpc_func_t * __restrict call, int return_vals);
443: /*
444: * rpc_srv_freeValsCall() Free return variables for RPC call
445: * @call = RPC function call
446: * return: none
447: */
448: inline void rpc_srv_freeValsCall(rpc_func_t * __restrict call);
449: /*
450: * rpc_srv_copyValsCall() Copy return variables for RPC call to new variable
451: * @call = RPC function call
452: * @newvals = New allocated variables array, must be free after use
453: * return: -1 error, !=-1 Returned number of copied RPC variables
454: */
455: inline int rpc_srv_copyValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict newvals);
456: /*
457: * rpc_srv_zeroValsCall() Clean values from return variables of RPC call
458: * @call = RPC function call
459: * return: -1 error, !=-1 Returned number of cleaned RPC variables
460: */
461: inline int rpc_srv_zeroValsCall(rpc_func_t * __restrict call);
462: /*
463: * rpc_srv_getValsCall() Get return variables for RPC call
464: * @call = RPC function call
465: * @vals = Returned variables, may be NULL
466: * return: -1 error, !=-1 Number of returned variables
467: */
468: inline int rpc_srv_getValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict vals);
469:
470:
471: /*
472: * rpc_srv_blobCreate() Create map blob to memory region and return object
473: * @srv = RPC Server instance
474: * @len = BLOB length object
475: * return: NULL error or !=NULL allocated BLOB object
476: */
477: inline rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len);
478: /*
479: * rpc_srv_blobMap() Map blob to memory region
480: * @srv = RPC Server instance
481: * @blob = Map to this BLOB element
482: * return: -1 error or 0 ok
483: */
484: inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
485: /*
486: * rpc_srv_blobUnmap() Unmap blob memory region
487: * @blob = Mapped BLOB element
488: * return: none
489: */
490: inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
491: /*
492: * rpc_srv_blobFree() Free blob from disk & memory
493: * @srv = RPC Server instance
494: * @blob = Mapped BLOB element
495: * return: -1 error or 0 ok
496: */
497: inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
498:
499: /*
500: * rpc_srv_registerBLOB() Register new BLOB to server
501: * @srv = RPC Server instance
502: * @len = BLOB length
503: * return: NULL error or new registered BLOB
504: */
505: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len);
506: /*
507: * rpc_srv_unregisterBLOB() Unregister BLOB from server
508: * @srv = RPC Server instance
509: * @var = BLOB Variable for unregister
510: * return: -1 error, 0 not found call, 1 unregister ok
511: */
512: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
513: /*
514: * rpc_srv_getBLOB() Get registered BLOB
515: * @srv = RPC Server instance
516: * @var = hash for variable
517: * return: NULL not found, !=NULL return blob var
518: */
519: inline rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
520:
521: /*
522: * rpc_srv_sendBLOB() Send mapped BLOB to client
523: * @cli = Client instance
524: * @blob = Mapped BLOB element
525: * return: -1 error, 0 ok
526: */
527: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
528: /*
529: * rpc_srv_recvBLOB() Receive BLOB from client
530: * @cli = Client instance
531: * @blob = Mapped BLOB element
532: * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
533: */
534: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
535:
536: /*
537: * rpc_cli_sendBLOB() Send BLOB to server
538: * @cli = Client instance
539: * @var = BLOB variable
540: * @data = BLOB data
541: * return: -1 error, 0 ok, 1 remote error
542: */
543: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void * __restrict data);
544: /*
545: * rpc_cli_recvBLOB() Receive BLOB from server
546: * @cli = Client instance
547: * @var = BLOB variable
548: * @data = BLOB data, must be free after use!
549: * return: -1 error, 0 ok, 1 remote error
550: */
551: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void ** data);
552: /*
553: * rpc_cli_delBLOB() Delete BLOB from server
554: * @cli = Client instance
555: * @var = BLOB variable
556: * return: -1 error, 0 ok, 1 remote error
557: */
558: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var);
559: /*
560: * rpc_cli_getBLOB() Receive BLOB from server and Delete after that.
561: * @cli = Client instance
562: * @var = BLOB variable
563: * @data = BLOB data, must be free after use!
564: * return: -1 error, 0 ok, >0 remote error
565: */
566: inline int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void ** data);
567:
568:
569:
570: /* RPC Client side functions */
571:
572: /*
573: * rpc_cli_openClient() Connect to RPC Server
574: * @ProgID = ProgramID for RPC session request
575: * @ProcID = ProcessID for RPC session request
576: * @family = Family socket type, AF_INET or AF_INET6
577: * @csHost = Host name or IP address for bind server
578: * @Port = Port for bind server, if Port == 0 default port is selected
579: * return: NULL == error or !=NULL connection to RPC server established
580: */
581: rpc_cli_t *rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short family,
582: const char *csHost, u_short Port);
583: /*
584: * rpc_cli_closeClient() Close connection to RPC server and free resources
585: * @cli = RPC Client session
586: * return: none
587: */
588: void rpc_cli_closeClient(rpc_cli_t * __restrict cli);
589: /*
590: * rpc_cli_execCall() Execute RPC call
591: * @cli = RPC Client session
592: * @csModule = Module name, if NULL self binary
593: * @csFunc = Function name for execute
594: * @in_argc = IN count of arguments
595: * @in_vals = IN RPC call array of rpc values
596: * @out_argc = OUT returned count of arguments
597: * @out_vals = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals())
598: * return: -1 error or != -1 ok result
599: */
600: int rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, const char *csFunc, int in_argc,
601: rpc_val_t * __restrict in_vals, int *out_argc, rpc_val_t ** __restrict out_vals);
602: /*
603: * rpc_cli_freeVals() Free rpc_val_t array returned from RPC call
604: * @args = Number of arguments in array
605: * @vals = Value elements
606: * return: none
607: */
608: inline void rpc_cli_freeVals(int args, rpc_val_t *vals);
609:
610:
611: /*
612: * rpc_cli_openBLOBClient() Connect to BLOB Server
613: * @rpccli = RPC Client session
614: * @Port = Port for bind server, if Port == 0 default port is selected
615: * return: NULL == error or !=NULL connection to BLOB server established
616: */
617: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port);
618: /*
619: * rpc_cli_closeBLOBClient() Close connection to BLOB server and free resources
620: * @cli = BLOB Client session
621: * return: none
622: */
623: void rpc_cli_closeBLOBClient(rpc_cli_t * __restrict cli);
624:
625:
626: #endif
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