Annotation of libaitrpc/inc/aitrpc.h, revision 1.1.1.1.2.10
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.1.1.1.2.10! misho 6: * $Id: aitrpc.h,v 1.1.1.1.2.9 2010/06/23 17:29:07 misho Exp $
1.1 misho 7: *
8: *************************************************************************/
9: #ifndef __AITRPC_H
10: #define __AITRPC_H
11:
12:
13: #include <assert.h>
14: #include <stdlib.h>
15: #include <string.h>
16: #include <sys/types.h>
17: #include <sys/param.h>
18: #include <sys/limits.h>
19: #include <sys/socket.h>
20:
21:
22: #define RPC_VERSION 1
23: #define RPC_DEFPORT 2611
24:
25:
26: /* RPC builtin registed calls */
27:
1.1.1.1.2.5 misho 28: #define CALL_BLOBSHUTDOWN "rpcBLOBServerShutdown"
29: #define CALL_BLOBCLIENTS "rpcBLOBServerClients"
30: #define CALL_BLOBVARS "rpcBLOBServerVars"
31:
1.1.1.1.2.1 misho 32: #define CALL_SRVSHUTDOWN "rpcServerShutdown"
1.1 misho 33: #define CALL_SRVCLIENTS "rpcServerClients"
34: #define CALL_SRVCALLS "rpcServerCalls"
35: #define CALL_SRVSESSIONS "rpcServerSessions"
36:
37:
38: /* RPC types */
39:
40: typedef enum {
41: empty, // empty -> variable is not set
1.1.1.1.2.3 misho 42: buffer, string, blob, // buffer -> uint8_t*; string -> int8_t*; blob -> void*(+socket);
1.1 misho 43: size, offset, datetime, // size -> size_t; offset -> off_t; datetime -> time_t;
44: real, bigreal, // real -> float; bigreal -> double;
45: u8, u16, u32, u64, // unsigned integers ...
46: i8, i16, i32, i64 // integers ...
47: } rpc_type_t;
48:
1.1.1.1.2.6 misho 49: typedef enum {
1.1.1.1.2.8 misho 50: disable, enable, // for blob.state
51: ok, error, // for blob reply
52: get, set, unset // for blob request
1.1.1.1.2.6 misho 53: } cmd_type_t;
54:
1.1 misho 55: /* RPC value */
56:
57: typedef struct {
58: rpc_type_t val_type;
59: size_t val_len;
60: union {
61: uint8_t *buffer;
62: int8_t *string;
1.1.1.1.2.3 misho 63: void *blob;
1.1 misho 64: size_t size;
65: off_t offset;
66: time_t datetime;
67: float real;
68: double bigreal;
69: uint8_t u8;
70: uint16_t u16;
71: uint32_t u32;
72: uint64_t u64;
73: int8_t i8;
74: int16_t i16;
75: int32_t i32;
76: int64_t i64;
77: } val;
78: } __packed rpc_val_t;
79:
80: #define RPC_TYPE_VAL(vl) ((vl)->val_type)
81: #define RPC_LEN_VAL(vl) ((vl)->val_len)
1.1.1.1.2.3 misho 82: #define RPC_BLOB_CHUNKS(vl, n) ((vl)->val_len / (n) + ((vl)->val_len % (n)) ? 1 : 0)
1.1 misho 83: #define RPC_EMPTY_VAL(vl) ((vl)->val_type == empty)
84:
85: #define RPC_GET_BUF(vl) (assert((vl)->val_type == buffer), (vl)->val.buffer)
86: #define RPC_GET_STR(vl) (assert((vl)->val_type == string), (vl)->val.string)
1.1.1.1.2.3 misho 87: #define RPC_GET_BLOB(vl) (assert((vl)->val_type == blob), (vl)->val.blob)
1.1 misho 88: #define RPC_GET_SIZE(vl) (assert((vl)->val_type == size), (vl)->val.size)
89: #define RPC_GET_OFF(vl) (assert((vl)->val_type == offset), (vl)->val.offset)
90: #define RPC_GET_TIME(vl) (assert((vl)->val_type == datetime), (vl)->val.datetime)
91: #define RPC_GET_REAL(vl) (assert((vl)->val_type == real), (vl)->val.real)
92: #define RPC_GET_BREAL(vl) (assert((vl)->val_type == bigreal), (vl)->val.bigreal)
93: #define RPC_GET_U8(vl) (assert((vl)->val_type == u8), (vl)->val.u8)
94: #define RPC_GET_U16(vl) (assert((vl)->val_type == u16), (vl)->val.u16)
95: #define RPC_GET_U32(vl) (assert((vl)->val_type == u32), (vl)->val.u32)
96: #define RPC_GET_U64(vl) (assert((vl)->val_type == u64), (vl)->val.u64)
97: #define RPC_GET_I8(vl) (assert((vl)->val_type == i8), (vl)->val.i8)
98: #define RPC_GET_I16(vl) (assert((vl)->val_type == i16), (vl)->val.i16)
99: #define RPC_GET_I32(vl) (assert((vl)->val_type == i32), (vl)->val.i32)
100: #define RPC_GET_I64(vl) (assert((vl)->val_type == i64), (vl)->val.i64)
101:
102: #define RPC_SET_BUF(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val.buffer = malloc(l); \
103: if (val->val.buffer) { \
104: val->val_type = buffer; val->val_len = l; \
105: memcpy(val->val.buffer, v, l); \
106: } } while (0)
107: #define RPC_SET_STR(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val.string = (int8_t*) strdup(v); \
108: if (val->val.string) { \
109: val->val_type = string; val->val_len = strlen(v) + 1; \
110: } } while (0)
1.1.1.1.2.10! misho 111: #define RPC_SET_BLOB(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val_type = blob; \
! 112: val->val.blob = (void*) v; val->val_len = l; } while (0)
1.1 misho 113: #define RPC_SET_SIZE(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = size; val->val.size = v; \
114: val->val_len = sizeof(size_t); } while (0)
115: #define RPC_SET_OFF(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = offset; val->val.offset = v; \
116: val->val_len = sizeof(off_t); } while (0)
117: #define RPC_SET_TIME(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = datetime; val->val.datetime = v; \
118: val->val_len = sizeof(time_t); } while (0)
119: #define RPC_SET_REAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = real; val->val.real = v; \
120: val->val_len = sizeof(float); } while (0)
121: #define RPC_SET_BREAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = bigreal; val->val.bigreal = v; \
122: val->val_len = sizeof(double); } while (0)
123: #define RPC_SET_U8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u8; val->val.u8 = v; \
124: val->val_len = sizeof(uint8_t); } while (0)
125: #define RPC_SET_U16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u16; val->val.u16 = v; \
126: val->val_len = sizeof(uint16_t); } while (0)
127: #define RPC_SET_U32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u32; val->val.u32 = v; \
128: val->val_len = sizeof(uint32_t); } while (0)
129: #define RPC_SET_U64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u64; val->val.u64 = v; \
130: val->val_len = sizeof(uint64_t); } while (0)
131: #define RPC_SET_I8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i8; val->val.i8 = v; \
132: val->val_len = sizeof(int8_t); } while (0)
133: #define RPC_SET_I16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i16; val->val.i16 = v; \
134: val->val_len = sizeof(int16_t); } while (0)
135: #define RPC_SET_I32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i32; val->val.i32 = v; \
136: val->val_len = sizeof(int32_t); } while (0)
137: #define RPC_SET_I64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i64; val->val.i64 = v; \
138: val->val_len = sizeof(int64_t); } while (0)
139:
140: #define RPC_FREE_VAL(vl) do { rpc_val_t *val = (vl); assert(val); \
141: if (val->val_type == buffer && val->val.buffer) { \
142: free(val->val.buffer); \
143: val->val.buffer = NULL; \
144: } \
145: if (val->val_type == string && val->val.string) { \
146: free(val->val.string); \
147: val->val.string = NULL; \
148: } \
149: val->val_type = val->val_len = 0; \
150: } while (0)
151:
152:
1.1.1.1.2.2 misho 153: #define RPC_CALLBACK_CHK_NUM_ARGS(f, n) do { \
1.1 misho 154: if (f->func_args != n) { \
155: rpc_SetErr(22, "Error:: different number of arguments!\n"); \
156: return -1; \
157: } \
1.1.1.1.2.1 misho 158: } while (0)
159: #define RPC_CALLBACK_CHECK_INPUT(s, f) do { \
160: if (!s || !f) { \
161: rpc_SetErr(22, "Error:: invalid callback parameters ...\n"); \
162: return -1; \
163: } \
164: } while (0)
1.1 misho 165:
166:
167: /* RPC session identification */
168:
169: typedef struct {
170: uint8_t sess_version;
171: uint32_t sess_program;
172: uint32_t sess_process;
173: } __packed rpc_sess_t;
174:
175:
176: /* Server managment RPC functions ... */
177:
178: // RPC function registration element!
179: typedef struct tagRPCFunc {
180: uint16_t func_tag;
181: uint32_t func_hash;
182: int8_t func_file[MAXPATHLEN];
183: int8_t func_name[UCHAR_MAX + 1];
184:
185: int8_t func_args;
186: rpc_val_t *func_vals;
187:
188: struct tagRPCFunc *func_next;
189: } rpc_func_t;
190:
191:
192: /* Network RPC packet - Client request */
193:
194: struct tagRPCCall {
195: rpc_sess_t call_session;
196: uint16_t call_tag;
197: uint32_t call_hash;
198: uint8_t call_argc;
199: } __packed;
200:
201: /* Network RPC packet - Server response */
202:
203: struct tagRPCRet {
204: rpc_sess_t ret_session;
205: uint16_t ret_tag;
206: uint32_t ret_hash;
207: int32_t ret_retcode;
208: int32_t ret_errno;
209: uint8_t ret_argc;
210: } __packed;
211:
1.1.1.1.2.6 misho 212: /* Network BLOB packet - Header */
213:
214: struct tagBLOBHdr {
215: rpc_sess_t hdr_session;
216: uint8_t hdr_cmd;
217: uint32_t hdr_var;
218: uint32_t hdr_seq;
219: uint32_t hdr_len;
220: } __packed;
221:
1.1 misho 222: /* Network RPC client & server elements */
223:
224: typedef struct {
225: struct sockaddr cli_sa; // host info
226: int cli_sock; // socket
227: pthread_t cli_tid; // TID of thread
228:
229: void *cli_parent; // pointer to parent rpc_srv_t for server or to rpc_sess_t for client
230: } rpc_cli_t;
231:
232:
1.1.1.1.2.5 misho 233: // BLOB registration element!
234: typedef struct tagBLOB {
1.1.1.1.2.6 misho 235: uint32_t blob_var;
236:
1.1.1.1.2.5 misho 237: size_t blob_len; // size of allocated BLOB data
238: void *blob_data; // BLOB data
239:
240: struct tagBLOB *blob_next;
241: } rpc_blob_t;
242:
243: typedef struct {
1.1 misho 244: rpc_sess_t srv_session; // RPC session registration info
1.1.1.1.2.5 misho 245: int srv_numcli; // maximum concurent client connections
1.1 misho 246:
1.1.1.1.2.5 misho 247: rpc_cli_t srv_server; // RPC server socket
248: rpc_cli_t *srv_clients; // connected rpc client sockets
1.1 misho 249:
250: rpc_func_t *srv_funcs; // registered functions list
1.1.1.1.2.5 misho 251:
252: pthread_mutex_t srv_mtx;
253:
254: struct {
255: int state; // BLOB server state: ==0 disable | !=0 enable
1.1.1.1.2.6 misho 256: char dir[UCHAR_MAX + 1];
1.1.1.1.2.5 misho 257:
258: rpc_cli_t server; // BLOB server socket
259: rpc_cli_t *clients; // connected blob client sockets
260:
261: rpc_blob_t *blobs; // registered blob variables list
262:
263: pthread_mutex_t mtx;
264: } srv_blob;
1.1 misho 265: } rpc_srv_t;
266:
267:
268: typedef int (*rpc_callback_t)(void * const, rpc_func_t *, int, rpc_val_t *);
269:
270:
271: // -----------------------------------------------------------------------
272:
273: /* Error support functions */
274:
275: // cli_GetErrno() Get error code of last operation
276: inline int cli_GetErrno();
277: // cli_GetError() Get error text of last operation
278: inline const char *cli_GetError();
279:
280:
281: /* RPC Server side functions */
282:
283: /*
284: * rpc_srv_initServer() Init & create RPC Server
285: * @regProgID = ProgramID for authentication & recognition
286: * @regProcID = ProcessID for authentication & recognition
287: * @concurentClients = Concurent clients at same time to this server
288: * @family = Family socket type, AF_INET or AF_INET6
289: * @csHost = Host name or IP address for bind server, if NULL any address
290: * @Port = Port for bind server, if Port == 0 default port is selected
291: * return: NULL == error or !=NULL bind and created RPC server instance
292: */
293: rpc_srv_t *rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients,
294: u_short family, const char *csHost, u_short Port);
295: /*
296: * rpc_srv_endServer() Destroy RPC server, close all opened sockets and free resources
297: * @srv = RPC Server instance
298: * return: none
299: */
300: void rpc_srv_endServer(rpc_srv_t * __restrict srv);
301: /*
302: * rpc_srv_execServer() Execute Main server loop and wait for clients requests
303: * @srv = RPC Server instance
304: * return: -1 error or 0 ok, infinite loop ...
305: */
306: int rpc_srv_execServer(rpc_srv_t * __restrict srv);
307:
308: /*
1.1.1.1.2.5 misho 309: * rpc_srv_initBLOBServer() Init & create BLOB Server
310: * @Port = Port for bind server, if Port == 0 default port is selected
1.1.1.1.2.6 misho 311: * @diskDir = Disk place for BLOB file objects
1.1.1.1.2.5 misho 312: * return: -1 == error or 0 bind and created BLOB server instance
313: */
1.1.1.1.2.6 misho 314: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir);
1.1.1.1.2.5 misho 315: /*
316: * rpc_srv_endBLOBServer() Destroy BLOB server, close all opened sockets and free resources
317: * @srv = RPC Server instance
318: * return: none
319: */
320: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
321: /*
322: * rpc_srv_execBLOBServer() Execute Main BLOB server loop and wait for clients requests
323: * @srv = RPC Server instance
324: * return: -1 error or 0 ok, infinite loop ...
325: */
326: int rpc_srv_execBLOBServer(rpc_srv_t * __restrict srv);
327:
328: /*
1.1.1.1.2.6 misho 329: * rpc_srv_getBLOB() Get registered BLOB
330: * @srv = RPC Server instance
331: * @var = hash for variable
332: * return: NULL not found, !=NULL return blob var
333: */
334: inline rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
335:
336: /*
1.1 misho 337: * rpc_srv_registerCall() Register call to RPC server
338: * @srv = RPC Server instance
339: * @csModule = Module name, if NULL self binary
340: * @csFunc = Function name
341: * @args = Number of function arguments
342: * return: -1 error or 0 register ok
343: */
344: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc,
345: unsigned char args);
346: /*
347: * rpc_srv_unregisterCall() Unregister call from RPC server
348: * @srv = RPC Server instance
349: * @csModule = Module name, if NULL self binary
350: * @csFunc = Function name
351: * return: -1 error, 0 not found call, 1 unregister ok
352: */
353: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
354: /*
355: * rpc_srv_getFunc() Get registered call from RPC server by Name
356: * @srv = RPC Server instance
357: * @csModule = Module name, if NULL self binary
358: * @csFunc = Function name
359: * return: NULL not found call, !=NULL return call
360: */
361: rpc_func_t *rpc_srv_getFunc(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
362: /*
363: * rpc_srv_getCall() Get registered call from RPC server
364: * @srv = RPC Server instance
365: * @tag = tag for function
366: * @hash = hash for function
367: * return: NULL not found call, !=NULL return call
368: */
369: inline rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag, uint32_t hash);
370: /*
371: * rpc_srv_execCall() Execute registered call from RPC server
372: * @data = RPC const data
373: * @call = Register RPC call
374: * @rpc = IN RPC call structure
375: * @args = IN RPC call array of rpc values
376: * return: -1 error, !=-1 ok
377: */
378: int rpc_srv_execCall(void * const data, rpc_func_t * __restrict call,
379: struct tagRPCCall * __restrict rpc, rpc_val_t * __restrict args);
380:
381:
382: /*
383: * rpc_srv_declValsCall() Declare return variables for RPC call
384: * @call = RPC function call
385: * @return_vals = Number of return variables
386: * return: -1 error, !=-1 ok
387: */
388: inline int rpc_srv_declValsCall(rpc_func_t * __restrict call, int return_vals);
389: /*
390: * rpc_srv_freeValsCall() Free return variables for RPC call
391: * @call = RPC function call
392: * return: none
393: */
394: inline void rpc_srv_freeValsCall(rpc_func_t * __restrict call);
395: /*
396: * rpc_srv_copyValsCall() Copy return variables for RPC call to new variable
397: * @call = RPC function call
398: * @newvals = New allocated variables array, must be free after use
399: * return: -1 error, !=-1 Returned number of copied RPC variables
400: */
401: inline int rpc_srv_copyValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict newvals);
402: /*
403: * rpc_srv_delValsCall() Clean values from return variables of RPC call
404: * @call = RPC function call
405: * return: -1 error, !=-1 Returned number of cleaned RPC variables
406: */
407: inline int rpc_srv_delValsCall(rpc_func_t * __restrict call);
408: /*
409: * rpc_srv_getValsCall() Get return variables for RPC call
410: * @call = RPC function call
411: * @vals = Returned variables, may be NULL
412: * return: -1 error, !=-1 Number of returned variables
413: */
414: inline int rpc_srv_getValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict vals);
415:
416:
1.1.1.1.2.7 misho 417: /*
1.1.1.1.2.10! misho 418: * rpc_srv_blobCreate() Create map blob to memory region and return object
! 419: * @srv = RPC Server instance
! 420: * @len = BLOB length object
! 421: * return: NULL error or !=NULL allocated BLOB object
! 422: */
! 423: inline rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len);
! 424: /*
1.1.1.1.2.7 misho 425: * rpc_srv_blobMap() Map blob to memory region
426: * @srv = RPC Server instance
427: * @blob = Map to this BLOB element
428: * return: -1 error or 0 ok
429: */
430: inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
431: /*
432: * rpc_srv_blobUnmap() Unmap blob memory region
433: * @blob = Mapped BLOB element
434: * return: none
435: */
436: inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
437: /*
438: * rpc_srv_blobFree() Free blob from disk & memory
439: * @srv = RPC Server instance
440: * @blob = Mapped BLOB element
441: * return: -1 error or 0 ok
442: */
443: inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
444:
1.1.1.1.2.9 misho 445: /*
1.1.1.1.2.10! misho 446: * rpc_srv_registerBLOB() Register new BLOB to server
! 447: * @srv = RPC Server instance
! 448: * @len = BLOB length
! 449: * return: -1 error or 0 register ok
! 450: */
! 451: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len);
! 452: /*
! 453: * rpc_srv_unregisterBLOB() Unregister BLOB from server
! 454: * @srv = RPC Server instance
! 455: * @var = BLOB Variable for unregister
! 456: * return: -1 error, 0 not found call, 1 unregister ok
! 457: */
! 458: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
! 459:
! 460: /*
1.1.1.1.2.9 misho 461: * rpc_srv_sendBLOB() Send mapped BLOB to client
462: * @cli = Client instance
463: * @blob = Mapped BLOB element
464: * return: -1 error, 0 ok
465: */
466: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
467: /*
468: * rpc_srv_recvBLOB() Receive BLOB from client
469: * @cli = Client instance
1.1.1.1.2.10! misho 470: * @blob = Mapped BLOB element
! 471: * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
1.1.1.1.2.9 misho 472: */
1.1.1.1.2.10! misho 473: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
1.1.1.1.2.9 misho 474:
1.1.1.1.2.7 misho 475:
1.1 misho 476: /* RPC Client side functions */
477:
478: /*
479: * rpc_cli_openClient() Connect to RPC Server
480: * @ProgID = ProgramID for RPC session request
481: * @ProcID = ProcessID for RPC session request
482: * @family = Family socket type, AF_INET or AF_INET6
483: * @csHost = Host name or IP address for bind server
484: * @Port = Port for bind server, if Port == 0 default port is selected
485: * return: NULL == error or !=NULL connection to RPC server established
486: */
487: rpc_cli_t *rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short family,
488: const char *csHost, u_short Port);
489: /*
490: * rpc_cli_closeClient() Close connection to RPC server and free resources
491: * @cli = RPC Client session
492: * return: none
493: */
494: void rpc_cli_closeClient(rpc_cli_t * __restrict cli);
495: /*
496: * rpc_cli_execCall() Execute RPC call
497: * @cli = RPC Client session
498: * @csModule = Module name, if NULL self binary
499: * @csFunc = Function name for execute
500: * @in_argc = IN count of arguments
501: * @in_vals = IN RPC call array of rpc values
502: * @out_argc = OUT returned count of arguments
503: * @out_vals = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals())
504: * return: -1 error or != -1 ok result
505: */
506: int rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, const char *csFunc, int in_argc,
507: rpc_val_t * __restrict in_vals, int *out_argc, rpc_val_t ** __restrict out_vals);
508: /*
509: * rpc_cli_freeVals() Free rpc_val_t array returned from RPC call
510: * @args = Number of arguments in array
511: * @vals = Value elements
512: * return: none
513: */
514: inline void rpc_cli_freeVals(int args, rpc_val_t *vals);
515:
516:
517: #endif
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