assembly.c 27.6 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
/*
 * assembly parser
 *
 * Copyright 2008 James Hawkins
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>
#include <stdio.h>

#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winver.h"
#include "wincrypt.h"
#include "dbghelp.h"
#include "ole2.h"
#include "fusion.h"
32
#include "corhdr.h"
33 34 35 36 37

#include "fusionpriv.h"
#include "wine/debug.h"
#include "wine/unicode.h"

38
#define TableFromToken(tk) (TypeFromToken(tk) >> 24)
39
#define TokenFromTable(idx) (idx << 24)
40

41 42
#define MAX_CLR_TABLES  64

43 44 45 46
#define MD_STRINGS_BIT 0x1
#define MD_GUIDS_BIT   0x2
#define MD_BLOBS_BIT   0x4

47 48
typedef struct tagCLRTABLE
{
49
    INT rows;
50 51 52 53 54
    DWORD offset;
} CLRTABLE;

struct tagASSEMBLY
{
55
    LPWSTR path;
56 57 58 59 60

    HANDLE hfile;
    HANDLE hmap;
    BYTE *data;

61
    IMAGE_NT_HEADERS *nthdr;
62 63 64 65 66 67 68 69 70
    IMAGE_COR20_HEADER *corhdr;

    METADATAHDR *metadatahdr;

    METADATATABLESHDR *tableshdr;
    DWORD numtables;
    DWORD *numrows;
    CLRTABLE tables[MAX_CLR_TABLES];

71 72 73 74
    DWORD stringsz;
    DWORD guidsz;
    DWORD blobsz;

75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
    BYTE *strings;
    BYTE *blobs;
};

static DWORD rva_to_offset(IMAGE_NT_HEADERS *nthdrs, DWORD rva)
{
    DWORD offset = rva, limit;
    IMAGE_SECTION_HEADER *img;
    WORD i;

    img = IMAGE_FIRST_SECTION(nthdrs);

    if (rva < img->PointerToRawData)
        return rva;

    for (i = 0; i < nthdrs->FileHeader.NumberOfSections; i++)
    {
        if (img[i].SizeOfRawData)
            limit = img[i].SizeOfRawData;
        else
            limit = img[i].Misc.VirtualSize;

        if (rva >= img[i].VirtualAddress &&
            rva < (img[i].VirtualAddress + limit))
        {
            if (img[i].PointerToRawData != 0)
            {
                offset -= img[i].VirtualAddress;
                offset += img[i].PointerToRawData;
            }

            return offset;
        }
    }

    return 0;
}

static BYTE *GetData(BYTE *pData, ULONG *pLength)
{
    if ((*pData & 0x80) == 0x00)
    {
        *pLength = (*pData & 0x7f);
        return pData + 1;
    }

    if ((*pData & 0xC0) == 0x80)
    {
        *pLength = ((*pData & 0x3f) << 8 | *(pData + 1));
        return pData + 2;
    }

    if ((*pData & 0xE0) == 0xC0)
    {
        *pLength = ((*pData & 0x1f) << 24 | *(pData + 1) << 16 |
                    *(pData + 2) << 8 | *(pData + 3));
        return pData + 4;
    }

    *pLength = (ULONG)-1;
    return 0;
}

static VOID *assembly_data_offset(ASSEMBLY *assembly, ULONG offset)
{
140
    return &assembly->data[offset];
141 142
}

143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234
#define MAX_TABLES_WORD 0xFFFF
#define MAX_TABLES_1BIT_ENCODE 32767
#define MAX_TABLES_2BIT_ENCODE 16383
#define MAX_TABLES_3BIT_ENCODE 8191
#define MAX_TABLES_5BIT_ENCODE 2047

static inline ULONG get_table_size(ASSEMBLY *assembly, DWORD index)
{
    DWORD size;
    INT tables;

    switch (TokenFromTable(index))
    {
        case mdtModule:
        {
            size = sizeof(MODULETABLE) + (assembly->stringsz - sizeof(WORD)) +
                   2 * (assembly->guidsz - sizeof(WORD));
            break;
        }
        case mdtTypeRef:
        {
            size = sizeof(TYPEREFTABLE) + 2 * (assembly->stringsz - sizeof(WORD));

            /* ResolutionScope:ResolutionScope */
            tables = max(assembly->tables[TableFromToken(mdtModule)].rows,
                         assembly->tables[TableFromToken(mdtModuleRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtAssemblyRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeRef)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
        case mdtTypeDef:
        {
            size = sizeof(TYPEDEFTABLE) + 2 * (assembly->stringsz - sizeof(WORD));

            /* Extends:TypeDefOrRef */
            tables = max(assembly->tables[TableFromToken(mdtTypeDef)].rows,
                         assembly->tables[TableFromToken(mdtTypeRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeSpec)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;

            size += (assembly->tables[TableFromToken(mdtFieldDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            size += (assembly->tables[TableFromToken(mdtMethodDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtFieldDef:
        {
            size = sizeof(FIELDTABLE) + (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));
            break;
        }
        case mdtMethodDef:
        {
            size = sizeof(METHODDEFTABLE) + (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));

            size += (assembly->tables[TableFromToken(mdtParamDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtParamDef:
        {
            size = sizeof(PARAMTABLE) + (assembly->stringsz - sizeof(WORD));
            break;
        }
        case mdtInterfaceImpl:
        {
            size = sizeof(INTERFACEIMPLTABLE);

            /* Interface:TypeDefOrRef */
            tables = max(assembly->tables[TableFromToken(mdtTypeDef)].rows,
                         assembly->tables[TableFromToken(mdtTypeRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeSpec)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
        case mdtMemberRef:
        {
            size = sizeof(MEMBERREFTABLE) + (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));

            /* Class:MemberRefParent */
            tables = max(assembly->tables[TableFromToken(mdtTypeRef)].rows,
                         assembly->tables[TableFromToken(mdtModuleRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtMethodDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeSpec)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeDef)].rows);
            size += (tables > MAX_TABLES_3BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
235
        case 0x0B000000: /* FIXME */
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275
        {
            size = sizeof(CONSTANTTABLE) + (assembly->blobsz - sizeof(WORD));

            /* Parent:HasConstant */
            tables = max(assembly->tables[TableFromToken(mdtParamDef)].rows,
                         assembly->tables[TableFromToken(mdtFieldDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtProperty)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
        case mdtCustomAttribute:
        {
            size = sizeof(CUSTOMATTRIBUTETABLE) + (assembly->blobsz - sizeof(WORD));

            /* Parent:HasCustomAttribute */
            tables = max(assembly->tables[TableFromToken(mdtMethodDef)].rows,
                         assembly->tables[TableFromToken(mdtFieldDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtParamDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtInterfaceImpl)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtMemberRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtPermission)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtProperty)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtEvent)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtSignature)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtModuleRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeSpec)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtAssembly)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtFile)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtExportedType)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtManifestResource)].rows);
            size += (tables > MAX_TABLES_5BIT_ENCODE) ? sizeof(WORD) : 0;

            /* Type:CustomAttributeType */
            tables = max(assembly->tables[TableFromToken(mdtMethodDef)].rows,
                         assembly->tables[TableFromToken(mdtMemberRef)].rows);
            size += (tables > MAX_TABLES_3BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
276
        case 0x0D000000: /* FIXME */
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296
        {
            size = sizeof(FIELDMARSHALTABLE) + (assembly->blobsz - sizeof(WORD));

            /* Parent:HasFieldMarshal */
            tables = max(assembly->tables[TableFromToken(mdtFieldDef)].rows,
                         assembly->tables[TableFromToken(mdtParamDef)].rows);
            size += (tables > MAX_TABLES_1BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
        case mdtPermission:
        {
            size = sizeof(DECLSECURITYTABLE) + (assembly->blobsz - sizeof(WORD));

            /* Parent:HasDeclSecurity */
            tables = max(assembly->tables[TableFromToken(mdtTypeDef)].rows,
                         assembly->tables[TableFromToken(mdtMethodDef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtAssembly)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
297
        case 0x0F000000: /* FIXME */
298 299 300 301 302 303
        {
            size = sizeof(CLASSLAYOUTTABLE);
            size += (assembly->tables[TableFromToken(mdtTypeDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
304
        case 0x10000000: /* FIXME */
305 306 307 308 309 310 311 312 313 314 315
        {
            size = sizeof(FIELDLAYOUTTABLE);
            size += (assembly->tables[TableFromToken(mdtFieldDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtSignature:
        {
            size = sizeof(STANDALONESIGTABLE) + (assembly->blobsz - sizeof(WORD));
            break;
        }
316
        case 0x12000000: /* FIXME */
317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335
        {
            size = sizeof(EVENTMAPTABLE);
            size += (assembly->tables[TableFromToken(mdtTypeDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            size += (assembly->tables[TableFromToken(mdtEvent)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtEvent:
        {
            size = sizeof(EVENTTABLE) + (assembly->stringsz - sizeof(WORD));

            /* EventType:TypeDefOrRef */
            tables = max(assembly->tables[TableFromToken(mdtTypeDef)].rows,
                         assembly->tables[TableFromToken(mdtTypeRef)].rows);
            tables = max(tables, assembly->tables[TableFromToken(mdtTypeSpec)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
336
        case 0x15000000:/* FIXME */
337 338 339 340 341 342 343 344 345 346 347 348 349 350
        {
            size = sizeof(PROPERTYMAPTABLE);
            size += (assembly->tables[TableFromToken(mdtTypeDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            size += (assembly->tables[TableFromToken(mdtProperty)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtProperty:
        {
            size = sizeof(PROPERTYTABLE) + (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));
            break;
        }
351
        case 0x18000000: /* FIXME */
352 353 354 355 356 357 358 359 360 361 362 363
        {
            size = sizeof(METHODSEMANTICSTABLE);

            /* Association:HasSemantics */
            tables = max(assembly->tables[TableFromToken(mdtEvent)].rows,
                         assembly->tables[TableFromToken(mdtProperty)].rows);
            size += (tables > MAX_TABLES_1BIT_ENCODE) ? sizeof(WORD) : 0;

            size += (assembly->tables[TableFromToken(mdtMethodDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
364
        case 0x19000000: /* FIXME */
365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386
        {
            size = sizeof(METHODIMPLTABLE);

            /* MethodBody:MethodDefOrRef, MethodDeclaration:MethodDefOrRef */
            tables = max(assembly->tables[TableFromToken(mdtMethodDef)].rows,
                         assembly->tables[TableFromToken(mdtMemberRef)].rows);
            size += (tables > MAX_TABLES_1BIT_ENCODE) ? 2 * sizeof(WORD) : 0;

            size += (assembly->tables[TableFromToken(mdtTypeDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtModuleRef:
        {
            size = sizeof(MODULEREFTABLE) + (assembly->stringsz - sizeof(WORD));
            break;
        }
        case mdtTypeSpec:
        {
            size = sizeof(TYPESPECTABLE) + (assembly->blobsz - sizeof(WORD));
            break;
        }
387
        case 0x1C000000: /* FIXME */
388 389 390 391 392 393 394 395 396 397 398 399
        {
            size = sizeof(IMPLMAPTABLE) + (assembly->stringsz - sizeof(WORD));

            /* MemberForwarded:MemberForwarded */
            tables = max(assembly->tables[TableFromToken(mdtFieldDef)].rows,
                         assembly->tables[TableFromToken(mdtMethodDef)].rows);
            size += (tables > MAX_TABLES_1BIT_ENCODE) ? sizeof(WORD) : 0;

            size += (assembly->tables[TableFromToken(mdtModuleRef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
400
        case 0x1D000000: /* FIXME */
401 402 403 404 405 406 407 408 409 410 411 412
        {
            size = sizeof(FIELDRVATABLE);
            size += (assembly->tables[TableFromToken(mdtFieldDef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtAssembly:
        {
            size = sizeof(ASSEMBLYTABLE) + 2 * (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));
            break;
        }
413
        case 0x20000001: /* FIXME */
414 415 416 417
        {
            size = sizeof(ASSEMBLYPROCESSORTABLE);
            break;
        }
418
        case 0x22000000: /* FIXME */
419 420 421 422 423 424 425 426 427 428
        {
            size = sizeof(ASSEMBLYOSTABLE);
            break;
        }
        case mdtAssemblyRef:
        {
            size = sizeof(ASSEMBLYREFTABLE) + 2 * (assembly->stringsz - sizeof(WORD)) +
                   2 * (assembly->blobsz - sizeof(WORD));
            break;
        }
429
        case 0x24000000: /* FIXME */
430 431 432 433 434 435
        {
            size = sizeof(ASSEMBLYREFPROCESSORTABLE);
            size += (assembly->tables[TableFromToken(mdtAssemblyRef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
436
        case 0x25000000: /* FIXME */
437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468
        {
            size = sizeof(ASSEMBLYREFOSTABLE);
            size += (assembly->tables[TableFromToken(mdtAssemblyRef)].rows >
                     MAX_TABLES_WORD) ? sizeof(WORD) : 0;
            break;
        }
        case mdtFile:
        {
            size = sizeof(FILETABLE) + (assembly->stringsz - sizeof(WORD)) +
                   (assembly->blobsz - sizeof(WORD));
            break;
        }
        case mdtExportedType:
        {
            size = sizeof(EXPORTEDTYPETABLE) + 2 * (assembly->stringsz - sizeof(WORD));

            /* Implementation:Implementation */
            tables = max(assembly->tables[TableFromToken(mdtFile)].rows,
                         assembly->tables[TableFromToken(mdtMethodDef)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
        case mdtManifestResource:
        {
            size = sizeof(MANIFESTRESTABLE) + (assembly->stringsz - sizeof(WORD));

            /* Implementation:Implementation */
            tables = max(assembly->tables[TableFromToken(mdtFile)].rows,
                         assembly->tables[TableFromToken(mdtAssemblyRef)].rows);
            size += (tables > MAX_TABLES_2BIT_ENCODE) ? sizeof(WORD) : 0;
            break;
        }
469
        case 0x29000000: /* FIXME */
470 471 472 473 474 475 476 477 478 479 480 481 482
        {
            size = sizeof(NESTEDCLASSTABLE);
            size += (assembly->tables[TableFromToken(mdtTypeDef)].rows >
                     MAX_TABLES_WORD) ? 2 * sizeof(WORD) : 0;
            break;
        }
        default:
            return 0;
    }

    return size;
}

483 484 485 486 487 488
static HRESULT parse_clr_tables(ASSEMBLY *assembly, ULONG offset)
{
    DWORD i, previ, offidx;
    ULONG currofs;

    currofs = offset;
489
    assembly->tableshdr = assembly_data_offset(assembly, currofs);
490 491 492
    if (!assembly->tableshdr)
        return E_FAIL;

493 494 495 496 497 498 499
    assembly->stringsz = (assembly->tableshdr->HeapOffsetSizes & MD_STRINGS_BIT) ?
                         sizeof(DWORD) : sizeof(WORD);
    assembly->guidsz = (assembly->tableshdr->HeapOffsetSizes & MD_GUIDS_BIT) ?
                       sizeof(DWORD) : sizeof(WORD);
    assembly->blobsz = (assembly->tableshdr->HeapOffsetSizes & MD_BLOBS_BIT) ?
                       sizeof(DWORD) : sizeof(WORD);

500
    currofs += sizeof(METADATATABLESHDR);
501
    assembly->numrows = assembly_data_offset(assembly, currofs);
502 503 504 505 506 507
    if (!assembly->numrows)
        return E_FAIL;

    assembly->numtables = 0;
    for (i = 0; i < MAX_CLR_TABLES; i++)
    {
508 509
        if ((i < 32 && (assembly->tableshdr->MaskValid.u.LowPart >> i) & 1) ||
            (i >= 32 && (assembly->tableshdr->MaskValid.u.HighPart >> i) & 1))
510 511 512 513 514 515 516 517
        {
            assembly->numtables++;
        }
    }

    currofs += assembly->numtables * sizeof(DWORD);
    memset(assembly->tables, -1, MAX_CLR_TABLES * sizeof(CLRTABLE));

518
    if (assembly->tableshdr->MaskValid.u.LowPart & 1)
519
        assembly->tables[0].offset = currofs;
520 521 522 523 524 525 526 527 528 529

    offidx = 0;
    for (i = 0; i < MAX_CLR_TABLES; i++)
    {
        if ((i < 32 && (assembly->tableshdr->MaskValid.u.LowPart >> i) & 1) ||
            (i >= 32 && (assembly->tableshdr->MaskValid.u.HighPart >> i) & 1))
        {
            assembly->tables[i].rows = assembly->numrows[offidx];
            offidx++;
        }
530 531 532 533 534 535
    }

    previ = 0;
    offidx = 1;
    for (i = 1; i < MAX_CLR_TABLES; i++)
    {
536 537
        if ((i < 32 && (assembly->tableshdr->MaskValid.u.LowPart >> i) & 1) ||
            (i >= 32 && (assembly->tableshdr->MaskValid.u.HighPart >> i) & 1))
538
        {
539
            currofs += get_table_size(assembly, previ) * assembly->numrows[offidx - 1];
540 541 542 543 544 545 546 547 548
            assembly->tables[i].offset = currofs;
            offidx++;
            previ = i;
        }
    }

    return S_OK;
}

549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581
static HRESULT parse_metadata_header(ASSEMBLY *assembly, DWORD *hdrsz)
{
    METADATAHDR *metadatahdr;
    BYTE *ptr, *dest;
    DWORD size, ofs;
    ULONG rva;

    rva = assembly->corhdr->MetaData.VirtualAddress;
    ptr = ImageRvaToVa(assembly->nthdr, assembly->data, rva, NULL);
    if (!ptr)
        return E_FAIL;

    metadatahdr = (METADATAHDR *)ptr;

    assembly->metadatahdr = HeapAlloc(GetProcessHeap(), 0, sizeof(METADATAHDR));
    if (!assembly->metadatahdr)
        return E_OUTOFMEMORY;

    size = FIELD_OFFSET(METADATAHDR, Version);
    memcpy(assembly->metadatahdr, metadatahdr, size);

    /* we don't care about the version string */

    ofs = FIELD_OFFSET(METADATAHDR, Flags);
    ptr += FIELD_OFFSET(METADATAHDR, Version) + metadatahdr->VersionLength + 1;
    dest = (BYTE *)assembly->metadatahdr + ofs;
    memcpy(dest, ptr, sizeof(METADATAHDR) - ofs);

    *hdrsz = sizeof(METADATAHDR) - sizeof(LPSTR) + metadatahdr->VersionLength + 1;

    return S_OK;
}

582 583 584 585 586 587
static HRESULT parse_clr_metadata(ASSEMBLY *assembly)
{
    METADATASTREAMHDR *streamhdr;
    ULONG rva, i, ofs;
    LPSTR stream;
    HRESULT hr;
588
    DWORD hdrsz;
589 590
    BYTE *ptr;

591 592 593
    hr = parse_metadata_header(assembly, &hdrsz);
    if (FAILED(hr))
        return hr;
594

595 596
    rva = assembly->corhdr->MetaData.VirtualAddress;
    ptr = ImageRvaToVa(assembly->nthdr, assembly->data, rva + hdrsz, NULL);
597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613
    if (!ptr)
        return E_FAIL;

    for (i = 0; i < assembly->metadatahdr->Streams; i++)
    {
        streamhdr = (METADATASTREAMHDR *)ptr;
        ofs = rva_to_offset(assembly->nthdr, rva + streamhdr->Offset);

        ptr += sizeof(METADATASTREAMHDR);
        stream = (LPSTR)ptr;

        if (!lstrcmpA(stream, "#~"))
        {
            hr = parse_clr_tables(assembly, ofs);
            if (FAILED(hr))
                return hr;
        }
614
        else if (!lstrcmpA(stream, "#Strings") || !lstrcmpA(stream, "Strings"))
615
            assembly->strings = assembly_data_offset(assembly, ofs);
616
        else if (!lstrcmpA(stream, "#Blob") || !lstrcmpA(stream, "Blob"))
617
            assembly->blobs = assembly_data_offset(assembly, ofs);
618

619 620
        ptr += lstrlenA(stream) + 1;
        ptr = (BYTE *)(((UINT_PTR)ptr + 3) & ~3); /* align on DWORD boundary */
621 622 623 624 625 626 627 628 629 630 631 632 633
    }

    return S_OK;
}

static HRESULT parse_pe_header(ASSEMBLY *assembly)
{
    IMAGE_DATA_DIRECTORY *datadirs;

    assembly->nthdr = ImageNtHeader(assembly->data);
    if (!assembly->nthdr)
        return E_FAIL;

634
    if (assembly->nthdr->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)
635 636 637 638 639 640
    {
        IMAGE_OPTIONAL_HEADER64 *opthdr =
                (IMAGE_OPTIONAL_HEADER64 *)&assembly->nthdr->OptionalHeader;
        datadirs = opthdr->DataDirectory;
    }
    else
641 642 643 644 645
    {
        IMAGE_OPTIONAL_HEADER32 *opthdr =
                (IMAGE_OPTIONAL_HEADER32 *)&assembly->nthdr->OptionalHeader;
        datadirs = opthdr->DataDirectory;
    }
646

647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670
    if (!datadirs)
        return E_FAIL;

    if (!datadirs[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress ||
        !datadirs[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].Size)
    {
        return E_FAIL;
    }

    assembly->corhdr = ImageRvaToVa(assembly->nthdr, assembly->data,
        datadirs[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress, NULL);
    if (!assembly->corhdr)
        return E_FAIL;

    return S_OK;
}

HRESULT assembly_create(ASSEMBLY **out, LPCWSTR file)
{
    ASSEMBLY *assembly;
    HRESULT hr;

    *out = NULL;

671
    assembly = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ASSEMBLY));
672 673 674
    if (!assembly)
        return E_OUTOFMEMORY;

675
    assembly->path = strdupW(file);
676
    if (!assembly->path)
677 678 679 680
    {
        hr = E_OUTOFMEMORY;
        goto failed;
    }
681 682 683

    assembly->hfile = CreateFileW(file, GENERIC_READ, FILE_SHARE_READ,
                                  NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
684 685 686 687 688
    if (assembly->hfile == INVALID_HANDLE_VALUE)
    {
        hr = HRESULT_FROM_WIN32(GetLastError());
        goto failed;
    }
689 690 691 692

    assembly->hmap = CreateFileMappingW(assembly->hfile, NULL, PAGE_READONLY,
                                        0, 0, NULL);
    if (!assembly->hmap)
693 694 695 696
    {
        hr = HRESULT_FROM_WIN32(GetLastError());
        goto failed;
    }
697 698 699

    assembly->data = MapViewOfFile(assembly->hmap, FILE_MAP_READ, 0, 0, 0);
    if (!assembly->data)
700 701 702 703
    {
        hr = HRESULT_FROM_WIN32(GetLastError());
        goto failed;
    }
704 705

    hr = parse_pe_header(assembly);
706
    if (FAILED(hr)) goto failed;
707 708

    hr = parse_clr_metadata(assembly);
709
    if (FAILED(hr)) goto failed;
710 711 712

    *out = assembly;
    return S_OK;
713 714

failed:
715
    assembly_release(assembly);
716
    return hr;
717 718 719 720 721 722 723
}

HRESULT assembly_release(ASSEMBLY *assembly)
{
    if (!assembly)
        return S_OK;

724
    HeapFree(GetProcessHeap(), 0, assembly->metadatahdr);
725 726 727 728 729 730 731 732 733
    HeapFree(GetProcessHeap(), 0, assembly->path);
    UnmapViewOfFile(assembly->data);
    CloseHandle(assembly->hmap);
    CloseHandle(assembly->hfile);
    HeapFree(GetProcessHeap(), 0, assembly);

    return S_OK;
}

734
static LPWSTR assembly_dup_str(ASSEMBLY *assembly, DWORD index)
735
{
736 737
    int len;
    LPWSTR cpy;
738
    LPSTR str = (LPSTR)&assembly->strings[index];
739 740 741 742 743 744

    len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);

    if ((cpy = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
       MultiByteToWideChar(CP_ACP, 0, str, -1, cpy, len);

745
    return cpy;
746 747
}

748
HRESULT assembly_get_name(ASSEMBLY *assembly, LPWSTR *name)
749
{
750
    BYTE *ptr;
751
    LONG offset;
752
    DWORD stridx;
753

754
    offset = assembly->tables[TableFromToken(mdtAssembly)].offset;
755
    if (offset == -1)
756 757
        return E_FAIL;

758 759
    ptr = assembly_data_offset(assembly, offset);
    if (!ptr)
760 761
        return E_FAIL;

762 763 764 765 766 767 768
    ptr += FIELD_OFFSET(ASSEMBLYTABLE, PublicKey) + assembly->blobsz;
    if (assembly->stringsz == sizeof(DWORD))
        stridx = *((DWORD *)ptr);
    else
        stridx = *((WORD *)ptr);

    *name = assembly_dup_str(assembly, stridx);
769 770 771 772 773 774
    if (!*name)
        return E_OUTOFMEMORY;

    return S_OK;
}

775
HRESULT assembly_get_path(ASSEMBLY *assembly, LPWSTR *path)
776
{
777
    LPWSTR cpy = HeapAlloc(GetProcessHeap(), 0, (strlenW(assembly->path) + 1) * sizeof(WCHAR));
778 779
    *path = cpy;
    if (cpy)
780
        strcpyW(cpy, assembly->path);
781
    else
782 783 784 785 786
        return E_OUTOFMEMORY;

    return S_OK;
}

787
HRESULT assembly_get_version(ASSEMBLY *assembly, LPWSTR *version)
788
{
789 790
    static const WCHAR format[] = {'%','u','.','%','u','.','%','u','.','%','u',0};

791 792
    ASSEMBLYTABLE *asmtbl;
    LONG offset;
793

794
    *version = NULL;
795

796 797 798
    offset = assembly->tables[TableFromToken(mdtAssembly)].offset;
    if (offset == -1)
        return E_FAIL;
799

800 801 802
    asmtbl = assembly_data_offset(assembly, offset);
    if (!asmtbl)
        return E_FAIL;
803

804
    *version = HeapAlloc(GetProcessHeap(), 0, sizeof(format) + 4 * strlen("65535") * sizeof(WCHAR));
805
    if (!*version)
806
        return E_OUTOFMEMORY;
807

808 809
    sprintfW(*version, format, asmtbl->MajorVersion, asmtbl->MinorVersion,
             asmtbl->BuildNumber, asmtbl->RevisionNumber);
810

811
    return S_OK;
812 813 814 815 816 817 818
}

static BYTE *assembly_get_blob(ASSEMBLY *assembly, WORD index, ULONG *size)
{
    return GetData(&assembly->blobs[index], size);
}

819
HRESULT assembly_get_pubkey_token(ASSEMBLY *assembly, LPWSTR *token)
820 821
{
    ASSEMBLYTABLE *asmtbl;
822 823
    ULONG i, size;
    LONG offset;
824 825 826 827 828 829
    BYTE *hashdata;
    HCRYPTPROV crypt;
    HCRYPTHASH hash;
    BYTE *pubkey;
    BYTE tokbytes[BYTES_PER_TOKEN];
    HRESULT hr = E_FAIL;
830
    LPWSTR tok;
831 832 833

    *token = NULL;

834
    offset = assembly->tables[TableFromToken(mdtAssembly)].offset;
835
    if (offset == -1)
836 837
        return E_FAIL;

838
    asmtbl = assembly_data_offset(assembly, offset);
839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
    if (!asmtbl)
        return E_FAIL;

    pubkey = assembly_get_blob(assembly, asmtbl->PublicKey, &size);

    if (!CryptAcquireContextA(&crypt, NULL, NULL, PROV_RSA_FULL,
                              CRYPT_VERIFYCONTEXT))
        return E_FAIL;

    if (!CryptCreateHash(crypt, CALG_SHA1, 0, 0, &hash))
        return E_FAIL;

    if (!CryptHashData(hash, pubkey, size, 0))
        return E_FAIL;

    size = 0;
    if (!CryptGetHashParam(hash, HP_HASHVAL, NULL, &size, 0))
        return E_FAIL;

    hashdata = HeapAlloc(GetProcessHeap(), 0, size);
    if (!hashdata)
    {
        hr = E_OUTOFMEMORY;
        goto done;
    }

    if (!CryptGetHashParam(hash, HP_HASHVAL, hashdata, &size, 0))
        goto done;

    for (i = size - 1; i >= size - 8; i--)
        tokbytes[size - i - 1] = hashdata[i];

871
    tok = HeapAlloc(GetProcessHeap(), 0, (TOKEN_LENGTH + 1) * sizeof(WCHAR));
872 873 874 875 876 877
    if (!tok)
    {
        hr = E_OUTOFMEMORY;
        goto done;
    }

878
    token_to_str(tokbytes, tok);
879 880 881 882 883 884 885 886 887 888 889

    *token = tok;
    hr = S_OK;

done:
    HeapFree(GetProcessHeap(), 0, hashdata);
    CryptDestroyHash(hash);
    CryptReleaseContext(crypt, 0);

    return hr;
}