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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #include "core/include/fpdfapi/cpdf_parser.h" | 7 #include "core/include/fpdfapi/cpdf_parser.h" |
| 8 | 8 |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| (...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 48 } | 48 } |
| 49 | 49 |
| 50 } // namespace | 50 } // namespace |
| 51 | 51 |
| 52 CPDF_Parser::CPDF_Parser() | 52 CPDF_Parser::CPDF_Parser() |
| 53 : m_pDocument(nullptr), | 53 : m_pDocument(nullptr), |
| 54 m_bOwnFileRead(true), | 54 m_bOwnFileRead(true), |
| 55 m_FileVersion(0), | 55 m_FileVersion(0), |
| 56 m_pTrailer(nullptr), | 56 m_pTrailer(nullptr), |
| 57 m_pEncryptDict(nullptr), | 57 m_pEncryptDict(nullptr), |
| 58 m_bVersionUpdated(false), |
| 58 m_pLinearized(nullptr), | 59 m_pLinearized(nullptr), |
| 59 m_dwFirstPageNo(0), | 60 m_dwFirstPageNo(0), |
| 60 m_dwXrefStartObjNum(0) { | 61 m_dwXrefStartObjNum(0) { |
| 61 m_pSyntax.reset(new CPDF_SyntaxParser); | 62 m_pSyntax.reset(new CPDF_SyntaxParser); |
| 62 } | 63 } |
| 63 | 64 |
| 64 CPDF_Parser::~CPDF_Parser() { | 65 CPDF_Parser::~CPDF_Parser() { |
| 65 CloseParser(); | 66 CloseParser(); |
| 66 } | 67 } |
| 67 | 68 |
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| 117 while (it != m_ObjectInfo.end()) { | 118 while (it != m_ObjectInfo.end()) { |
| 118 auto saved_it = it++; | 119 auto saved_it = it++; |
| 119 m_ObjectInfo.erase(saved_it); | 120 m_ObjectInfo.erase(saved_it); |
| 120 } | 121 } |
| 121 | 122 |
| 122 if (!pdfium::ContainsKey(m_ObjectInfo, objnum - 1)) | 123 if (!pdfium::ContainsKey(m_ObjectInfo, objnum - 1)) |
| 123 m_ObjectInfo[objnum - 1].pos = 0; | 124 m_ObjectInfo[objnum - 1].pos = 0; |
| 124 } | 125 } |
| 125 | 126 |
| 126 void CPDF_Parser::CloseParser() { | 127 void CPDF_Parser::CloseParser() { |
| 127 m_bVersionUpdated = FALSE; | 128 m_bVersionUpdated = false; |
| 128 delete m_pDocument; | 129 delete m_pDocument; |
| 129 m_pDocument = nullptr; | 130 m_pDocument = nullptr; |
| 130 | 131 |
| 131 if (m_pTrailer) { | 132 if (m_pTrailer) { |
| 132 m_pTrailer->Release(); | 133 m_pTrailer->Release(); |
| 133 m_pTrailer = nullptr; | 134 m_pTrailer = nullptr; |
| 134 } | 135 } |
| 135 ReleaseEncryptHandler(); | 136 ReleaseEncryptHandler(); |
| 136 SetEncryptDictionary(nullptr); | 137 SetEncryptDictionary(nullptr); |
| 137 | 138 |
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| 459 if (offset == 0) { | 460 if (offset == 0) { |
| 460 for (int32_t c = 0; c < 10; c++) { | 461 for (int32_t c = 0; c < 10; c++) { |
| 461 if (!std::isdigit(pEntry[c])) | 462 if (!std::isdigit(pEntry[c])) |
| 462 return FALSE; | 463 return FALSE; |
| 463 } | 464 } |
| 464 } | 465 } |
| 465 | 466 |
| 466 m_ObjectInfo[objnum].pos = offset; | 467 m_ObjectInfo[objnum].pos = offset; |
| 467 int32_t version = FXSYS_atoi(pEntry + 11); | 468 int32_t version = FXSYS_atoi(pEntry + 11); |
| 468 if (version >= 1) | 469 if (version >= 1) |
| 469 m_bVersionUpdated = TRUE; | 470 m_bVersionUpdated = true; |
| 470 | 471 |
| 471 m_ObjectInfo[objnum].gennum = version; | 472 m_ObjectInfo[objnum].gennum = version; |
| 472 if (m_ObjectInfo[objnum].pos < m_pSyntax->m_FileLen) | 473 if (m_ObjectInfo[objnum].pos < m_pSyntax->m_FileLen) |
| 473 m_SortedOffset.insert(m_ObjectInfo[objnum].pos); | 474 m_SortedOffset.insert(m_ObjectInfo[objnum].pos); |
| 474 | 475 |
| 475 m_ObjectInfo[objnum].type = 1; | 476 m_ObjectInfo[objnum].type = 1; |
| 476 } | 477 } |
| 477 } | 478 } |
| 478 } | 479 } |
| 479 m_pSyntax->RestorePos(SavedPos + count * recordsize); | 480 m_pSyntax->RestorePos(SavedPos + count * recordsize); |
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| 534 if (offset == 0) { | 535 if (offset == 0) { |
| 535 for (int32_t c = 0; c < 10; c++) { | 536 for (int32_t c = 0; c < 10; c++) { |
| 536 if (!std::isdigit(pEntry[c])) | 537 if (!std::isdigit(pEntry[c])) |
| 537 return false; | 538 return false; |
| 538 } | 539 } |
| 539 } | 540 } |
| 540 | 541 |
| 541 m_ObjectInfo[objnum].pos = offset; | 542 m_ObjectInfo[objnum].pos = offset; |
| 542 int32_t version = FXSYS_atoi(pEntry + 11); | 543 int32_t version = FXSYS_atoi(pEntry + 11); |
| 543 if (version >= 1) | 544 if (version >= 1) |
| 544 m_bVersionUpdated = TRUE; | 545 m_bVersionUpdated = true; |
| 545 | 546 |
| 546 m_ObjectInfo[objnum].gennum = version; | 547 m_ObjectInfo[objnum].gennum = version; |
| 547 if (m_ObjectInfo[objnum].pos < m_pSyntax->m_FileLen) | 548 if (m_ObjectInfo[objnum].pos < m_pSyntax->m_FileLen) |
| 548 m_SortedOffset.insert(m_ObjectInfo[objnum].pos); | 549 m_SortedOffset.insert(m_ObjectInfo[objnum].pos); |
| 549 | 550 |
| 550 m_ObjectInfo[objnum].type = 1; | 551 m_ObjectInfo[objnum].type = 1; |
| 551 } | 552 } |
| 552 } | 553 } |
| 553 } | 554 } |
| 554 } | 555 } |
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| 768 i += (FX_DWORD)nLen; | 769 i += (FX_DWORD)nLen; |
| 769 } | 770 } |
| 770 | 771 |
| 771 if (!m_ObjectInfo.empty() && IsValidObjectNumber(objnum) && | 772 if (!m_ObjectInfo.empty() && IsValidObjectNumber(objnum) && |
| 772 m_ObjectInfo[objnum].pos) { | 773 m_ObjectInfo[objnum].pos) { |
| 773 if (pObject) { | 774 if (pObject) { |
| 774 FX_DWORD oldgen = GetObjectGenNum(objnum); | 775 FX_DWORD oldgen = GetObjectGenNum(objnum); |
| 775 m_ObjectInfo[objnum].pos = obj_pos; | 776 m_ObjectInfo[objnum].pos = obj_pos; |
| 776 m_ObjectInfo[objnum].gennum = gennum; | 777 m_ObjectInfo[objnum].gennum = gennum; |
| 777 if (oldgen != gennum) | 778 if (oldgen != gennum) |
| 778 m_bVersionUpdated = TRUE; | 779 m_bVersionUpdated = true; |
| 779 } | 780 } |
| 780 } else { | 781 } else { |
| 781 m_ObjectInfo[objnum].pos = obj_pos; | 782 m_ObjectInfo[objnum].pos = obj_pos; |
| 782 m_ObjectInfo[objnum].type = 1; | 783 m_ObjectInfo[objnum].type = 1; |
| 783 m_ObjectInfo[objnum].gennum = gennum; | 784 m_ObjectInfo[objnum].gennum = gennum; |
| 784 } | 785 } |
| 785 | 786 |
| 786 if (pObject) | 787 if (pObject) |
| 787 pObject->Release(); | 788 pObject->Release(); |
| 788 } | 789 } |
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| 1642 if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) && | 1643 if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) && |
| 1643 !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) { | 1644 !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) { |
| 1644 m_LastXRefOffset = 0; | 1645 m_LastXRefOffset = 0; |
| 1645 m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum; | 1646 m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum; |
| 1646 return FORMAT_ERROR; | 1647 return FORMAT_ERROR; |
| 1647 } | 1648 } |
| 1648 | 1649 |
| 1649 m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum; | 1650 m_pSyntax->m_MetadataObjnum = dwSaveMetadataObjnum; |
| 1650 return SUCCESS; | 1651 return SUCCESS; |
| 1651 } | 1652 } |
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