dlls/snmpapi/main.c

   1 /*
   2  * Implementation of SNMPAPI.DLL
   3  *
   4  * Copyright 2002 Patrik Stridvall
   5  * Copyright 2007 Hans Leidekker
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "snmp.h"
  28
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(snmpapi);
  32
  33 static INT asn_any_copy(AsnAny *dst, const AsnAny *src)
  34 {
  35     memset(dst, 0, sizeof(AsnAny));
  36     switch (src->asnType)
  37     {
  38     case ASN_INTEGER32:  dst->asnValue.number = src->asnValue.number; break;
  39     case ASN_UNSIGNED32: dst->asnValue.unsigned32 = src->asnValue.unsigned32; break;
  40     case ASN_COUNTER64:  dst->asnValue.counter64 = src->asnValue.counter64; break;
  41     case ASN_COUNTER32:  dst->asnValue.counter = src->asnValue.counter; break;
  42     case ASN_GAUGE32:    dst->asnValue.gauge = src->asnValue.gauge; break;
  43     case ASN_TIMETICKS:  dst->asnValue.ticks = src->asnValue.ticks; break;
  44
  45     case ASN_OCTETSTRING:
  46     case ASN_BITS:
  47     case ASN_SEQUENCE:
  48     case ASN_IPADDRESS:
  49     case ASN_OPAQUE:
  50     {
  51         BYTE *stream;
  52         UINT length = src->asnValue.string.length;
  53
  54         if (!(stream = malloc(length))) return SNMPAPI_ERROR;
  55         memcpy(stream, src->asnValue.string.stream, length);
  56
  57         dst->asnValue.string.stream = stream;
  58         dst->asnValue.string.length = length;
  59         dst->asnValue.string.dynamic = TRUE;
  60         break;
  61     }
  62     case ASN_OBJECTIDENTIFIER:
  63     {
  64         UINT *ids, i, size = src->asnValue.object.idLength * sizeof(UINT);
  65
  66         if (!(ids = malloc(size))) return SNMPAPI_ERROR;
  67
  68         dst->asnValue.object.ids = ids;
  69         dst->asnValue.object.idLength = src->asnValue.object.idLength;
  70
  71         for (i = 0; i < dst->asnValue.object.idLength; i++)
  72             dst->asnValue.object.ids[i] = src->asnValue.object.ids[i];
  73         break;
  74     }
  75     default:
  76     {
  77         WARN("unknown ASN type: %d\n", src->asnType);
  78         return SNMPAPI_ERROR;
  79     }
  80     }
  81     dst->asnType = src->asnType;
  82     return SNMPAPI_NOERROR;
  83 }
  84
  85 static void asn_any_free(AsnAny *any)
  86 {
  87     switch (any->asnType)
  88     {
  89     case ASN_OCTETSTRING:
  90     case ASN_BITS:
  91     case ASN_SEQUENCE:
  92     case ASN_IPADDRESS:
  93     case ASN_OPAQUE:
  94     {
  95         if (any->asnValue.string.dynamic)
  96         {
  97             free(any->asnValue.string.stream);
  98             any->asnValue.string.stream = NULL;
  99         }
 100         break;
 101     }
 102     case ASN_OBJECTIDENTIFIER:
 103     {
 104         free(any->asnValue.object.ids);
 105         any->asnValue.object.ids = NULL;
 106         break;
 107     }
 108     default: break;
 109     }
 110     any->asnType = ASN_NULL;
 111 }
 112
 113 static ULONGLONG startTime;
 114
 115 /***********************************************************************
 116  *              DllMain for SNMPAPI
 117  */
 118 BOOL WINAPI DllMain(
 119         HINSTANCE hInstDLL,
 120         DWORD fdwReason,
 121         LPVOID lpvReserved)
 122 {
 123     TRACE("(%p,%ld,%p)\n", hInstDLL, fdwReason, lpvReserved);
 124
 125     switch(fdwReason) {
 126     case DLL_PROCESS_ATTACH:
 127         DisableThreadLibraryCalls(hInstDLL);
 128         startTime = GetTickCount64();
 129         break;
 130     }
 131
 132     return TRUE;
 133 }
 134
 135 /***********************************************************************
 136  *      SnmpSvcGetUptime        (SNMPAPI.@)
 137  *
 138  * BUGS
 139  *  This returns the number of centiseconds since the DLL was loaded,
 140  *  rather than the number of centiseconds since the SNMP service was
 141  *  started, since there isn't yet any SNMP service in Wine.
 142  */
 143 DWORD WINAPI SnmpSvcGetUptime(void)
 144 {
 145     ULONGLONG now = GetTickCount64();
 146
 147     return (now - startTime) / 10;
 148 }
 149
 150 /***********************************************************************
 151  *      SnmpUtilDbgPrint        (SNMPAPI.@)
 152  *
 153  * NOTES
 154  *  The Microsoft headers claim this function uses the stdcall calling
 155  *  convention. But stdcall functions cannot take a variable number of
 156  *  arguments so this does not make sense. The stdcall specification is
 157  *  probably ignored by Microsoft's compiler in this case. So declare it
 158  *  correctly in Wine so it works with all compilers.
 159  */
 160 VOID WINAPIV SnmpUtilDbgPrint(INT loglevel, LPSTR format, ...)
 161 {
 162     FIXME("(%d, %s)\n", loglevel, debugstr_a(format));
 163 }
 164
 165 /***********************************************************************
 166  *      SnmpUtilMemAlloc        (SNMPAPI.@)
 167  */
 168 LPVOID WINAPI SnmpUtilMemAlloc(UINT nbytes)
 169 {
 170     TRACE("(%d)\n", nbytes);
 171     return malloc(nbytes);
 172 }
 173
 174 /***********************************************************************
 175  *      SnmpUtilMemReAlloc      (SNMPAPI.@)
 176  */
 177 LPVOID WINAPI SnmpUtilMemReAlloc(LPVOID mem, UINT nbytes)
 178 {
 179     TRACE("(%p, %d)\n", mem, nbytes);
 180     return realloc(mem, nbytes);
 181 }
 182
 183 /***********************************************************************
 184  *      SnmpUtilMemFree         (SNMPAPI.@)
 185  */
 186 VOID WINAPI SnmpUtilMemFree(LPVOID mem)
 187 {
 188     TRACE("(%p)\n", mem);
 189     free(mem);
 190 }
 191
 192 /***********************************************************************
 193  *      SnmpUtilAsnAnyCpy       (SNMPAPI.@)
 194  */
 195 INT WINAPI SnmpUtilAsnAnyCpy(AsnAny *dst, AsnAny *src)
 196 {
 197     TRACE("(%p, %p)\n", dst, src);
 198     return asn_any_copy(dst, src);
 199 }
 200
 201 /***********************************************************************
 202  *      SnmpUtilAsnAnyFree      (SNMPAPI.@)
 203  */
 204 VOID WINAPI SnmpUtilAsnAnyFree(AsnAny *any)
 205 {
 206     TRACE("(%p)\n", any);
 207     asn_any_free(any);
 208 }
 209
 210 /***********************************************************************
 211  *      SnmpUtilOctetsCpy       (SNMPAPI.@)
 212  */
 213 INT WINAPI SnmpUtilOctetsCpy(AsnOctetString *dst, AsnOctetString *src)
 214 {
 215     TRACE("(%p, %p)\n", dst, src);
 216
 217     if (!dst) return SNMPAPI_ERROR;
 218     if (!src)
 219     {
 220         dst->dynamic = FALSE;
 221         dst->length = 0;
 222         dst->stream = NULL;
 223         return SNMPAPI_NOERROR;
 224     }
 225     if ((dst->stream = malloc(src->length)))
 226     {
 227         unsigned int i;
 228
 229         dst->dynamic = TRUE;
 230         dst->length = src->length;
 231         for (i = 0; i < dst->length; i++) dst->stream[i] = src->stream[i];
 232         return SNMPAPI_NOERROR;
 233     }
 234     return SNMPAPI_ERROR;
 235 }
 236
 237 /***********************************************************************
 238  *      SnmpUtilOctetsFree      (SNMPAPI.@)
 239  */
 240 VOID WINAPI SnmpUtilOctetsFree(AsnOctetString *octets)
 241 {
 242     TRACE("(%p)\n", octets);
 243
 244     if (octets)
 245     {
 246         octets->length = 0;
 247         if (octets->dynamic) free(octets->stream);
 248         octets->stream = NULL;
 249         octets->dynamic = FALSE;
 250     }
 251 }
 252
 253 /***********************************************************************
 254  *      SnmpUtilOctetsNCmp      (SNMPAPI.@)
 255  */
 256 INT WINAPI SnmpUtilOctetsNCmp(AsnOctetString *octets1, AsnOctetString *octets2, UINT count)
 257 {
 258     INT ret;
 259     unsigned int i;
 260
 261     TRACE("(%p, %p, %d)\n", octets1, octets2, count);
 262
 263     if (!octets1 || !octets2) return 0;
 264
 265     for (i = 0; i < count; i++)
 266         if ((ret = octets1->stream[i] - octets2->stream[i])) return ret;
 267
 268     return 0;
 269 }
 270
 271 /***********************************************************************
 272  *      SnmpUtilOctetsCmp       (SNMPAPI.@)
 273  */
 274 INT WINAPI SnmpUtilOctetsCmp(AsnOctetString *octets1, AsnOctetString *octets2)
 275 {
 276     TRACE("(%p, %p)\n", octets1, octets2);
 277
 278     if (octets1->length < octets2->length) return -1;
 279     if (octets1->length > octets2->length) return 1;
 280
 281     return SnmpUtilOctetsNCmp(octets1, octets2, octets1->length);
 282 }
 283
 284 /***********************************************************************
 285  *      SnmpUtilOidAppend       (SNMPAPI.@)
 286  */
 287 INT WINAPI SnmpUtilOidAppend(AsnObjectIdentifier *dst, AsnObjectIdentifier *src)
 288 {
 289     UINT *ids, i, size;
 290
 291     TRACE("(%p, %p)\n", dst, src);
 292
 293     if (!dst) return SNMPAPI_ERROR;
 294     if (!src) return SNMPAPI_NOERROR;
 295
 296     size = (src->idLength + dst->idLength) * sizeof(UINT);
 297     if (!(ids = realloc(dst->ids, size)))
 298     {
 299         if (!(ids = malloc(size)))
 300         {
 301             SetLastError(SNMP_MEM_ALLOC_ERROR);
 302             return SNMPAPI_ERROR;
 303         }
 304         else memcpy(ids, dst->ids, dst->idLength * sizeof(UINT));
 305     }
 306
 307     for (i = 0; i < src->idLength; i++) ids[i + dst->idLength] = src->ids[i];
 308     dst->idLength = dst->idLength + src->idLength;
 309     dst->ids = ids;
 310
 311     return SNMPAPI_NOERROR;
 312 }
 313
 314 /***********************************************************************
 315  *      SnmpUtilOidCpy          (SNMPAPI.@)
 316  */
 317 INT WINAPI SnmpUtilOidCpy(AsnObjectIdentifier *dst, AsnObjectIdentifier *src)
 318 {
 319     TRACE("(%p, %p)\n", dst, src);
 320
 321     if (!dst) return SNMPAPI_ERROR;
 322     if (!src)
 323     {
 324         dst->idLength = 0;
 325         dst->ids = NULL;
 326         return SNMPAPI_NOERROR;
 327     }
 328     if ((dst->ids = malloc(src->idLength * sizeof(UINT))))
 329     {
 330         unsigned int i;
 331
 332         dst->idLength = src->idLength;
 333         for (i = 0; i < dst->idLength; i++) dst->ids[i] = src->ids[i];
 334         return SNMPAPI_NOERROR;
 335     }
 336     return SNMPAPI_ERROR;
 337 }
 338
 339 /***********************************************************************
 340  *      SnmpUtilOidFree         (SNMPAPI.@)
 341  */
 342 VOID WINAPI SnmpUtilOidFree(AsnObjectIdentifier *oid)
 343 {
 344     TRACE("(%p)\n", oid);
 345
 346     if (!oid) return;
 347
 348     oid->idLength = 0;
 349     free(oid->ids);
 350     oid->ids = NULL;
 351 }
 352
 353 /***********************************************************************
 354  *      SnmpUtilOidNCmp         (SNMPAPI.@)
 355  */
 356 INT WINAPI SnmpUtilOidNCmp(AsnObjectIdentifier *oid1, AsnObjectIdentifier *oid2, UINT count)
 357 {
 358     unsigned int i, len;
 359
 360     TRACE("(%p, %p, %d)\n", oid1, oid2, count);
 361
 362     if (!oid1 || !oid2) return 0;
 363
 364     len = min(count, oid1->idLength);
 365     len = min(len, oid2->idLength);
 366     for (i = 0; i < len; i++)
 367     {
 368         if (oid1->ids[i] > oid2->ids[i]) return 1;
 369         if (oid1->ids[i] < oid2->ids[i]) return -1;
 370     }
 371     if (i == count) return 0;
 372     if (oid1->idLength < oid2->idLength) return -1;
 373     if (oid1->idLength > oid2->idLength) return 1;
 374     return 0;
 375 }
 376
 377 /***********************************************************************
 378  *      SnmpUtilOidCmp          (SNMPAPI.@)
 379  */
 380 INT WINAPI SnmpUtilOidCmp(AsnObjectIdentifier *oid1, AsnObjectIdentifier *oid2)
 381 {
 382     TRACE("(%p, %p)\n", oid1, oid2);
 383
 384     if (oid1->idLength < oid2->idLength) return -1;
 385     if (oid1->idLength > oid2->idLength) return 1;
 386
 387     return SnmpUtilOidNCmp(oid1, oid2, oid1->idLength);
 388 }
 389
 390 /***********************************************************************
 391  *      SnmpUtilVarBindCpy      (SNMPAPI.@)
 392  */
 393 INT WINAPI SnmpUtilVarBindCpy(SnmpVarBind *dst, SnmpVarBind *src)
 394 {
 395     unsigned int i, size;
 396
 397     TRACE("(%p, %p)\n", dst, src);
 398
 399     if (!dst) return SNMPAPI_ERROR;
 400     if (!src)
 401     {
 402         dst->value.asnType = ASN_NULL;
 403         return SNMPAPI_NOERROR;
 404     }
 405
 406     size = src->name.idLength * sizeof(UINT);
 407     if (!(dst->name.ids = malloc(size))) return SNMPAPI_ERROR;
 408
 409     for (i = 0; i < src->name.idLength; i++) dst->name.ids[i] = src->name.ids[i];
 410     dst->name.idLength = src->name.idLength;
 411
 412     if (!asn_any_copy(&dst->value, &src->value))
 413     {
 414         free(dst->name.ids);
 415         return SNMPAPI_ERROR;
 416     }
 417     return SNMPAPI_NOERROR;
 418 }
 419
 420 /***********************************************************************
 421  *      SnmpUtilVarBindFree     (SNMPAPI.@)
 422  */
 423 VOID WINAPI SnmpUtilVarBindFree(SnmpVarBind *vb)
 424 {
 425     TRACE("(%p)\n", vb);
 426
 427     if (!vb) return;
 428
 429     asn_any_free(&vb->value);
 430     free(vb->name.ids);
 431     vb->name.idLength = 0;
 432     vb->name.ids = NULL;
 433 }
 434
 435 /***********************************************************************
 436  *      SnmpUtilVarBindListCpy  (SNMPAPI.@)
 437  */
 438 INT WINAPI SnmpUtilVarBindListCpy(SnmpVarBindList *dst, SnmpVarBindList *src)
 439 {
 440     unsigned int i, size;
 441     SnmpVarBind *src_entry, *dst_entry;
 442
 443     TRACE("(%p, %p)\n", dst, src);
 444
 445     if (!src)
 446     {
 447         dst->list = NULL;
 448         dst->len = 0;
 449         return SNMPAPI_NOERROR;
 450     }
 451     size = src->len * sizeof(SnmpVarBind);
 452     if (!(dst->list = malloc(size)))
 453         return SNMPAPI_ERROR;
 454
 455     src_entry = src->list;
 456     dst_entry = dst->list;
 457     for (i = 0; i < src->len; i++)
 458     {
 459         if (SnmpUtilVarBindCpy(dst_entry, src_entry))
 460         {
 461             src_entry++;
 462             dst_entry++;
 463         }
 464         else
 465         {
 466             for (--i; i > 0; i--) SnmpUtilVarBindFree(--dst_entry);
 467             free(dst->list);
 468             return SNMPAPI_ERROR;
 469         }
 470     }
 471     dst->len = src->len;
 472     return SNMPAPI_NOERROR;
 473 }
 474
 475 /***********************************************************************
 476  *      SnmpUtilVarBindListFree (SNMPAPI.@)
 477  */
 478 VOID WINAPI SnmpUtilVarBindListFree(SnmpVarBindList *vb)
 479 {
 480     unsigned int i;
 481     SnmpVarBind *entry;
 482
 483     TRACE("(%p)\n", vb);
 484
 485     entry = vb->list;
 486     for (i = 0; i < vb->len; i++) SnmpUtilVarBindFree(entry++);
 487     free(vb->list);
 488     vb->list = NULL;
 489     vb->len = 0;
 490 }
 491
 492 /***********************************************************************
 493  *      SnmpUtilIdsToA          (SNMPAPI.@)
 494  */
 495 LPSTR WINAPI SnmpUtilIdsToA(UINT *ids, UINT length)
 496 {
 497     static char one[10], oid[514], null_oid[] = "<null oid>";
 498     unsigned int i, len, left = sizeof(oid) - 1;
 499
 500     TRACE("(%p, %d)\n", ids, length);
 501
 502     if (!ids || !length) return null_oid;
 503
 504     *oid = 0;
 505     for (i = 0; i < length; i++)
 506     {
 507         sprintf(one, "%d", ids[i]);
 508         len = strlen(one);
 509         if (left >= len)
 510         {
 511             strcat(oid, one);
 512             left -= len;
 513         }
 514         else return oid;
 515
 516         if (i < length - 1)
 517         {
 518             if (left > 0)
 519             {
 520                 strcat(oid, ".");
 521                 left--;
 522             }
 523             else return oid;
 524         }
 525     }
 526     return oid;
 527 }
 528
 529 /***********************************************************************
 530  *      SnmpUtilOidToA          (SNMPAPI.@)
 531  */
 532 LPSTR WINAPI SnmpUtilOidToA(AsnObjectIdentifier *oid)
 533 {
 534     static char null_oid[] = "<null oid>";
 535
 536     TRACE("(%p)\n", oid);
 537
 538     if (oid)
 539         return SnmpUtilIdsToA(oid->ids, oid->idLength);
 540     else
 541         return null_oid;
 542 }
 543
 544 /***********************************************************************
 545  *      SnmpUtilPrintOid        (SNMPAPI.@)
 546  */
 547 VOID WINAPI SnmpUtilPrintOid(AsnObjectIdentifier *oid)
 548 {
 549     unsigned int i;
 550
 551     TRACE("(%p)\n", oid);
 552
 553     if (!oid) return;
 554
 555     for (i = 0; i < oid->idLength; i++)
 556     {
 557         TRACE("%u", oid->ids[i]);
 558         if (i < oid->idLength - 1) TRACE(".");
 559     }
 560     TRACE("\n");
 561 }
 562
 563 /***********************************************************************
 564  *      SnmpUtilPrintAsnAny     (SNMPAPI.@)
 565  */
 566 VOID WINAPI SnmpUtilPrintAsnAny(AsnAny *any)
 567 {
 568     unsigned int i;
 569
 570     TRACE("(%p)\n", any);
 571
 572     switch (any->asnType)
 573     {
 574     case ASN_NULL:       TRACE("Null value\n"); return;
 575     case ASN_INTEGER32:  TRACE("Integer32 %ld\n", any->asnValue.number); return;
 576     case ASN_UNSIGNED32: TRACE("Unsigned32 %lu\n", any->asnValue.unsigned32); return;
 577     case ASN_COUNTER32:  TRACE("Counter32 %lu\n", any->asnValue.counter); return;
 578     case ASN_GAUGE32:    TRACE("Gauge32 %lu\n", any->asnValue.gauge); return;
 579     case ASN_TIMETICKS:  TRACE("Timeticks %lu\n", any->asnValue.ticks); return;
 580     case ASN_COUNTER64:
 581     {
 582         TRACE("Counter64 %I64x\n", any->asnValue.counter64.QuadPart);
 583         return;
 584     }
 585     case ASN_OCTETSTRING:
 586     {
 587         TRACE("String ");
 588         for (i = 0; i < any->asnValue.string.length; i++)
 589             TRACE("%c", any->asnValue.string.stream[i]);
 590         TRACE("\n");
 591         return;
 592     }
 593     case ASN_IPADDRESS:
 594     {
 595         TRACE("IpAddress ");
 596         if (any->asnValue.string.length < 4)
 597         {
 598             TRACE("Invalid\n");
 599             return;
 600         }
 601         for (i = 0; i < 4; i++)
 602         {
 603             TRACE("%u", any->asnValue.string.stream[i]);
 604             if (i < 3) TRACE(".");
 605         }
 606         TRACE("\n");
 607         return;
 608     }
 609     case ASN_BITS:
 610     {
 611         TRACE("Bits ");
 612         for (i = 0; i < any->asnValue.string.length; i++)
 613         {
 614             TRACE("0x%02x", any->asnValue.string.stream[i]);
 615             if (i < any->asnValue.object.idLength - 1) TRACE(" ");
 616         }
 617         TRACE("\n");
 618         return;
 619     }
 620     case ASN_OPAQUE:
 621     {
 622         TRACE("Opaque ");
 623         for (i = 0; i < any->asnValue.string.length; i++)
 624         {
 625             TRACE("0x%02x", any->asnValue.string.stream[i]);
 626             if (i < any->asnValue.object.idLength - 1) TRACE(" ");
 627         }
 628         TRACE("\n");
 629         return;
 630     }
 631     case ASN_OBJECTIDENTIFIER:
 632     {
 633         TRACE("ObjectID ");
 634         for (i = 0; i < any->asnValue.object.idLength; i++)
 635         {
 636             TRACE("%u", any->asnValue.object.ids[i]);
 637             if (i < any->asnValue.object.idLength - 1) TRACE(".");
 638         }
 639         TRACE("\n");
 640         return;
 641     }
 642     default:
 643     {
 644         TRACE("Invalid type %d\n", any->asnType);
 645         return;
 646     }
 647     }
 648 }