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00008 #include <net-snmp/net-snmp-config.h>
00009
00010 #include <sys/types.h>
00011 #if HAVE_WINSOCK_H
00012 #include <winsock.h>
00013 #endif
00014 #include <stdio.h>
00015 #ifdef HAVE_STDLIB_H
00016 #include <stdlib.h>
00017 #endif
00018 #if HAVE_STRING_H
00019 #include <string.h>
00020 #else
00021 #include <strings.h>
00022 #endif
00023 #if TIME_WITH_SYS_TIME
00024 # ifdef WIN32
00025 # include <sys/timeb.h>
00026 # else
00027 # include <sys/time.h>
00028 # endif
00029 # include <time.h>
00030 #else
00031 # if HAVE_SYS_TIME_H
00032 # include <sys/time.h>
00033 # else
00034 # include <time.h>
00035 # endif
00036 #endif
00037 #ifdef HAVE_NETINET_IN_H
00038 #include <netinet/in.h>
00039 #endif
00040
00041 #if HAVE_DMALLOC_H
00042 #include <dmalloc.h>
00043 #endif
00044
00045 #include <net-snmp/types.h>
00046 #include <net-snmp/output_api.h>
00047 #include <net-snmp/utilities.h>
00048
00049 #include <net-snmp/library/snmp_api.h>
00050 #include <net-snmp/library/callback.h>
00051 #include <net-snmp/library/snmp_secmod.h>
00052 #include <net-snmp/library/snmpusm.h>
00053 #include <net-snmp/library/lcd_time.h>
00054 #include <net-snmp/library/scapi.h>
00055 #include <net-snmp/library/snmpv3.h>
00056
00057 #include <net-snmp/library/transform_oids.h>
00058
00059
00060
00061
00062
00063
00064 static Enginetime etimelist[ETIMELIST_SIZE];
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00093
00094 int
00095 get_enginetime(u_char * engineID,
00096 u_int engineID_len,
00097 u_int * engineboot,
00098 u_int * engine_time, u_int authenticated)
00099 {
00100 int rval = SNMPERR_SUCCESS;
00101 time_t timediff = 0;
00102 Enginetime e = NULL;
00103
00104
00105
00106
00107
00108
00109 if (!engine_time || !engineboot) {
00110 QUITFUN(SNMPERR_GENERR, get_enginetime_quit);
00111 }
00112
00113
00114
00115
00116
00117
00118 *engine_time = *engineboot = 0;
00119
00120 if (!engineID || (engineID_len <= 0)) {
00121 QUITFUN(SNMPERR_GENERR, get_enginetime_quit);
00122 }
00123
00124 if (!(e = search_enginetime_list(engineID, engineID_len))) {
00125 QUITFUN(SNMPERR_GENERR, get_enginetime_quit);
00126 }
00127 #ifdef LCD_TIME_SYNC_OPT
00128 if (!authenticated || e->authenticatedFlag) {
00129 #endif
00130 *engine_time = e->engineTime;
00131 *engineboot = e->engineBoot;
00132
00133 timediff = snmpv3_local_snmpEngineTime() - e->lastReceivedEngineTime;
00134
00135 #ifdef LCD_TIME_SYNC_OPT
00136 }
00137 #endif
00138
00139 if (timediff > (int) (ENGINETIME_MAX - *engine_time)) {
00140 *engine_time = (timediff - (ENGINETIME_MAX - *engine_time));
00141
00142
00143
00144
00145
00146 if (*engineboot < ENGINEBOOT_MAX) {
00147 *engineboot += 1;
00148 }
00149
00150 } else {
00151 *engine_time += timediff;
00152 }
00153
00154 DEBUGMSGTL(("lcd_get_enginetime", "engineID "));
00155 DEBUGMSGHEX(("lcd_get_enginetime", engineID, engineID_len));
00156 DEBUGMSG(("lcd_get_enginetime", ": boots=%d, time=%d\n", *engineboot,
00157 *engine_time));
00158
00159 get_enginetime_quit:
00160 return rval;
00161
00162 }
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00188
00189 int
00190 get_enginetime_ex(u_char * engineID,
00191 u_int engineID_len,
00192 u_int * engineboot,
00193 u_int * engine_time,
00194 u_int * last_engine_time, u_int authenticated)
00195 {
00196 int rval = SNMPERR_SUCCESS;
00197 time_t timediff = 0;
00198 Enginetime e = NULL;
00199
00200
00201
00202
00203
00204
00205 if (!engine_time || !engineboot || !last_engine_time) {
00206 QUITFUN(SNMPERR_GENERR, get_enginetime_ex_quit);
00207 }
00208
00209
00210
00211
00212
00213
00214 *last_engine_time = *engine_time = *engineboot = 0;
00215
00216 if (!engineID || (engineID_len <= 0)) {
00217 QUITFUN(SNMPERR_GENERR, get_enginetime_ex_quit);
00218 }
00219
00220 if (!(e = search_enginetime_list(engineID, engineID_len))) {
00221 QUITFUN(SNMPERR_GENERR, get_enginetime_ex_quit);
00222 }
00223 #ifdef LCD_TIME_SYNC_OPT
00224 if (!authenticated || e->authenticatedFlag) {
00225 #endif
00226 *last_engine_time = *engine_time = e->engineTime;
00227 *engineboot = e->engineBoot;
00228
00229 timediff = snmpv3_local_snmpEngineTime() - e->lastReceivedEngineTime;
00230
00231 #ifdef LCD_TIME_SYNC_OPT
00232 }
00233 #endif
00234
00235 if (timediff > (int) (ENGINETIME_MAX - *engine_time)) {
00236 *engine_time = (timediff - (ENGINETIME_MAX - *engine_time));
00237
00238
00239
00240
00241
00242 if (*engineboot < ENGINEBOOT_MAX) {
00243 *engineboot += 1;
00244 }
00245
00246 } else {
00247 *engine_time += timediff;
00248 }
00249
00250 DEBUGMSGTL(("lcd_get_enginetime_ex", "engineID "));
00251 DEBUGMSGHEX(("lcd_get_enginetime_ex", engineID, engineID_len));
00252 DEBUGMSG(("lcd_get_enginetime_ex", ": boots=%d, time=%d\n",
00253 *engineboot, *engine_time));
00254
00255 get_enginetime_ex_quit:
00256 return rval;
00257
00258 }
00259
00260
00261 void free_enginetime(unsigned char *engineID, size_t engineID_len)
00262 {
00263 Enginetime e = NULL;
00264 int rval = 0;
00265
00266 rval = hash_engineID(engineID, engineID_len);
00267 if (rval < 0)
00268 return;
00269
00270 e = etimelist[rval];
00271
00272 while (e != NULL) {
00273 etimelist[rval] = e->next;
00274 SNMP_FREE(e->engineID);
00275 SNMP_FREE(e);
00276 e = etimelist[rval];
00277 }
00278
00279 }
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00305
00306 int
00307 set_enginetime(u_char * engineID,
00308 u_int engineID_len,
00309 u_int engineboot, u_int engine_time, u_int authenticated)
00310 {
00311 int rval = SNMPERR_SUCCESS, iindex;
00312 Enginetime e = NULL;
00313
00314
00315
00316
00317
00318
00319 if (!engineID || (engineID_len <= 0)) {
00320 return rval;
00321 }
00322
00323
00324
00325
00326
00327
00328 if (!(e = search_enginetime_list(engineID, engineID_len))) {
00329 if ((iindex = hash_engineID(engineID, engineID_len)) < 0) {
00330 QUITFUN(SNMPERR_GENERR, set_enginetime_quit);
00331 }
00332
00333 e = (Enginetime) calloc(1, sizeof(*e));
00334
00335 e->next = etimelist[iindex];
00336 etimelist[iindex] = e;
00337
00338 e->engineID = (u_char *) calloc(1, engineID_len);
00339 memcpy(e->engineID, engineID, engineID_len);
00340
00341 e->engineID_len = engineID_len;
00342 }
00343 #ifdef LCD_TIME_SYNC_OPT
00344 if (authenticated || !e->authenticatedFlag) {
00345 e->authenticatedFlag = authenticated;
00346 #else
00347 if (authenticated) {
00348 #endif
00349 e->engineTime = engine_time;
00350 e->engineBoot = engineboot;
00351 e->lastReceivedEngineTime = snmpv3_local_snmpEngineTime();
00352 }
00353
00354 e = NULL;
00355
00356 DEBUGMSGTL(("lcd_set_enginetime", "engineID "));
00357 DEBUGMSGHEX(("lcd_set_enginetime", engineID, engineID_len));
00358 DEBUGMSG(("lcd_set_enginetime", ": boots=%d, time=%d\n", engineboot,
00359 engine_time));
00360
00361 set_enginetime_quit:
00362 SNMP_FREE(e);
00363
00364 return rval;
00365
00366 }
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00387 Enginetime
00388 search_enginetime_list(u_char * engineID, u_int engineID_len)
00389 {
00390 int rval = SNMPERR_SUCCESS;
00391 Enginetime e = NULL;
00392
00393
00394
00395
00396
00397 if (!engineID || (engineID_len <= 0)) {
00398 QUITFUN(SNMPERR_GENERR, search_enginetime_list_quit);
00399 }
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00401
00402
00403
00404
00405 rval = hash_engineID(engineID, engineID_len);
00406 if (rval < 0) {
00407 QUITFUN(SNMPERR_GENERR, search_enginetime_list_quit);
00408 }
00409 e = etimelist[rval];
00410
00411 for ( ; e; e = e->next) {
00412 if ((engineID_len == e->engineID_len)
00413 && !memcmp(e->engineID, engineID, engineID_len)) {
00414 break;
00415 }
00416 }
00417
00418
00419 search_enginetime_list_quit:
00420 return e;
00421
00422 }
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00445 int
00446 hash_engineID(u_char * engineID, u_int engineID_len)
00447 {
00448 int rval = SNMPERR_GENERR;
00449 size_t buf_len = SNMP_MAXBUF;
00450 u_int additive = 0;
00451 u_char *bufp, buf[SNMP_MAXBUF];
00452 void *context = NULL;
00453
00454
00455
00456
00457
00458
00459 if (!engineID || (engineID_len <= 0)) {
00460 QUITFUN(SNMPERR_GENERR, hash_engineID_quit);
00461 }
00462
00463
00464
00465
00466
00467 #ifndef DISABLE_MD5
00468 rval = sc_hash(usmHMACMD5AuthProtocol,
00469 sizeof(usmHMACMD5AuthProtocol) / sizeof(oid),
00470 engineID, engineID_len, buf, &buf_len);
00471 #else
00472 rval = sc_hash(usmHMACSHA1AuthProtocol,
00473 sizeof(usmHMACSHA1AuthProtocol) / sizeof(oid),
00474 engineID, engineID_len, buf, &buf_len);
00475 #endif
00476 QUITFUN(rval, hash_engineID_quit);
00477
00478 for (bufp = buf; (bufp - buf) < (int) buf_len; bufp += 4) {
00479 additive += (u_int) * bufp;
00480 }
00481
00482 hash_engineID_quit:
00483 SNMP_FREE(context);
00484 memset(buf, 0, SNMP_MAXBUF);
00485
00486 return (rval < 0) ? rval : (additive % ETIMELIST_SIZE);
00487
00488 }
00489
00490
00491
00492
00493 #ifdef SNMP_TESTING_CODE
00494
00495
00496
00497
00498
00499
00500
00501 void
00502 dump_etimelist_entry(Enginetime e, int count)
00503 {
00504 u_int buflen;
00505 char tabs[SNMP_MAXBUF], *t = tabs, *s;
00506
00507
00508
00509 count += 1;
00510 while (count--) {
00511 t += sprintf(t, " ");
00512 }
00513
00514
00515 buflen = e->engineID_len;
00516 #ifdef SNMP_TESTING_CODE
00517 if (!(s = dump_snmpEngineID(e->engineID, &buflen))) {
00518 #endif
00519 binary_to_hex(e->engineID, e->engineID_len, &s);
00520 #ifdef SNMP_TESTING_CODE
00521 }
00522 #endif
00523
00524 DEBUGMSGTL(("dump_etimelist", "%s\n", tabs));
00525 DEBUGMSGTL(("dump_etimelist", "%s%s (len=%d) <%d,%d>\n", tabs,
00526 s, e->engineID_len, e->engineTime, e->engineBoot));
00527 DEBUGMSGTL(("dump_etimelist", "%s%ld (%ld)", tabs,
00528 e->lastReceivedEngineTime,
00529 snmpv3_local_snmpEngineTime() - e->lastReceivedEngineTime));
00530
00531 SNMP_FREE(s);
00532
00533 }
00534
00535
00536
00537
00538
00539
00540
00541 void
00542 dump_etimelist(void)
00543 {
00544 int iindex = -1, count = 0;
00545 Enginetime e;
00546
00547
00548
00549 DEBUGMSGTL(("dump_etimelist", "\n"));
00550
00551 while (++iindex < ETIMELIST_SIZE) {
00552 DEBUGMSG(("dump_etimelist", "[%d]", iindex));
00553
00554 count = 0;
00555 e = etimelist[iindex];
00556
00557 while (e) {
00558 dump_etimelist_entry(e, count++);
00559 e = e->next;
00560 }
00561
00562 if (count > 0) {
00563 DEBUGMSG(("dump_etimelist", "\n"));
00564 }
00565 }
00566
00567 DEBUGMSG(("dump_etimelist", "\n"));
00568
00569 }
00570 #endif