Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 1 | // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | |
| 7 | #include "public/fpdf_dataavail.h" |
| 8 | |
| 9 | #include <memory> |
| 10 | #include <utility> |
| 11 | |
| 12 | #include "core/fpdfapi/parser/cpdf_data_avail.h" |
| 13 | #include "core/fpdfapi/parser/cpdf_document.h" |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 14 | #include "core/fxcrt/fx_stream.h" |
| 15 | #include "core/fxcrt/retain_ptr.h" |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 16 | #include "fpdfsdk/fsdk_define.h" |
| 17 | #include "public/fpdf_formfill.h" |
| 18 | #include "third_party/base/ptr_util.h" |
| 19 | |
| 20 | // These checks are here because core/ and public/ cannot depend on each other. |
| 21 | static_assert(CPDF_DataAvail::DataError == PDF_DATA_ERROR, |
| 22 | "CPDF_DataAvail::DataError value mismatch"); |
| 23 | static_assert(CPDF_DataAvail::DataNotAvailable == PDF_DATA_NOTAVAIL, |
| 24 | "CPDF_DataAvail::DataNotAvailable value mismatch"); |
| 25 | static_assert(CPDF_DataAvail::DataAvailable == PDF_DATA_AVAIL, |
| 26 | "CPDF_DataAvail::DataAvailable value mismatch"); |
| 27 | |
| 28 | static_assert(CPDF_DataAvail::LinearizationUnknown == PDF_LINEARIZATION_UNKNOWN, |
| 29 | "CPDF_DataAvail::LinearizationUnknown value mismatch"); |
| 30 | static_assert(CPDF_DataAvail::NotLinearized == PDF_NOT_LINEARIZED, |
| 31 | "CPDF_DataAvail::NotLinearized value mismatch"); |
| 32 | static_assert(CPDF_DataAvail::Linearized == PDF_LINEARIZED, |
| 33 | "CPDF_DataAvail::Linearized value mismatch"); |
| 34 | |
| 35 | static_assert(CPDF_DataAvail::FormError == PDF_FORM_ERROR, |
| 36 | "CPDF_DataAvail::FormError value mismatch"); |
| 37 | static_assert(CPDF_DataAvail::FormNotAvailable == PDF_FORM_NOTAVAIL, |
| 38 | "CPDF_DataAvail::FormNotAvailable value mismatch"); |
| 39 | static_assert(CPDF_DataAvail::FormAvailable == PDF_FORM_AVAIL, |
| 40 | "CPDF_DataAvail::FormAvailable value mismatch"); |
| 41 | static_assert(CPDF_DataAvail::FormNotExist == PDF_FORM_NOTEXIST, |
| 42 | "CPDF_DataAvail::FormNotExist value mismatch"); |
| 43 | |
| 44 | namespace { |
| 45 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 46 | class FPDF_FileAvailContext : public CPDF_DataAvail::FileAvail { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 47 | public: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 48 | FPDF_FileAvailContext() : m_pfileAvail(nullptr) {} |
| 49 | ~FPDF_FileAvailContext() override {} |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 50 | |
| 51 | void Set(FX_FILEAVAIL* pfileAvail) { m_pfileAvail = pfileAvail; } |
| 52 | |
| 53 | // CPDF_DataAvail::FileAvail: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 54 | bool IsDataAvail(FX_FILESIZE offset, size_t size) override { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 55 | return !!m_pfileAvail->IsDataAvail(m_pfileAvail, offset, size); |
| 56 | } |
| 57 | |
| 58 | private: |
| 59 | FX_FILEAVAIL* m_pfileAvail; |
| 60 | }; |
| 61 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 62 | class FPDF_FileAccessContext : public IFX_SeekableReadStream { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 63 | public: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 64 | template <typename T, typename... Args> |
| 65 | friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); |
| 66 | |
| 67 | ~FPDF_FileAccessContext() override {} |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 68 | |
| 69 | void Set(FPDF_FILEACCESS* pFile) { m_pFileAccess = pFile; } |
| 70 | |
| 71 | // IFX_SeekableReadStream |
| 72 | FX_FILESIZE GetSize() override { return m_pFileAccess->m_FileLen; } |
| 73 | |
| 74 | bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override { |
| 75 | return !!m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset, |
| 76 | (uint8_t*)buffer, size); |
| 77 | } |
| 78 | |
| 79 | private: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 80 | FPDF_FileAccessContext() : m_pFileAccess(nullptr) {} |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 81 | |
| 82 | FPDF_FILEACCESS* m_pFileAccess; |
| 83 | }; |
| 84 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 85 | class FPDF_DownloadHintsContext : public CPDF_DataAvail::DownloadHints { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 86 | public: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 87 | explicit FPDF_DownloadHintsContext(FX_DOWNLOADHINTS* pDownloadHints) { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 88 | m_pDownloadHints = pDownloadHints; |
| 89 | } |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 90 | ~FPDF_DownloadHintsContext() override {} |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 91 | |
| 92 | public: |
| 93 | // IFX_DownloadHints |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 94 | void AddSegment(FX_FILESIZE offset, size_t size) override { |
| 95 | if (m_pDownloadHints) |
| 96 | m_pDownloadHints->AddSegment(m_pDownloadHints, offset, size); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | private: |
| 100 | FX_DOWNLOADHINTS* m_pDownloadHints; |
| 101 | }; |
| 102 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 103 | class FPDF_AvailContext { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 104 | public: |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 105 | FPDF_AvailContext() |
| 106 | : m_FileAvail(pdfium::MakeUnique<FPDF_FileAvailContext>()), |
| 107 | m_FileRead(pdfium::MakeRetain<FPDF_FileAccessContext>()) {} |
| 108 | ~FPDF_AvailContext() {} |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 109 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 110 | std::unique_ptr<FPDF_FileAvailContext> m_FileAvail; |
| 111 | RetainPtr<FPDF_FileAccessContext> m_FileRead; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 112 | std::unique_ptr<CPDF_DataAvail> m_pDataAvail; |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 113 | }; |
| 114 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 115 | FPDF_AvailContext* FPDFAvailContextFromFPDFAvail(FPDF_AVAIL avail) { |
| 116 | return static_cast<FPDF_AvailContext*>(avail); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | } // namespace |
| 120 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 121 | FPDF_EXPORT FPDF_AVAIL FPDF_CALLCONV FPDFAvail_Create(FX_FILEAVAIL* file_avail, |
| 122 | FPDF_FILEACCESS* file) { |
| 123 | auto pAvail = pdfium::MakeUnique<FPDF_AvailContext>(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 124 | pAvail->m_FileAvail->Set(file_avail); |
| 125 | pAvail->m_FileRead->Set(file); |
| 126 | pAvail->m_pDataAvail = pdfium::MakeUnique<CPDF_DataAvail>( |
| 127 | pAvail->m_FileAvail.get(), pAvail->m_FileRead, true); |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 128 | return pAvail.release(); // Caller takes ownership. |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 129 | } |
| 130 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 131 | FPDF_EXPORT void FPDF_CALLCONV FPDFAvail_Destroy(FPDF_AVAIL avail) { |
| 132 | // Take ownership back from caller and destroy. |
| 133 | std::unique_ptr<FPDF_AvailContext>(FPDFAvailContextFromFPDFAvail(avail)); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 134 | } |
| 135 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 136 | FPDF_EXPORT int FPDF_CALLCONV FPDFAvail_IsDocAvail(FPDF_AVAIL avail, |
| 137 | FX_DOWNLOADHINTS* hints) { |
| 138 | if (!avail) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 139 | return PDF_DATA_ERROR; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 140 | FPDF_DownloadHintsContext hints_context(hints); |
| 141 | return FPDFAvailContextFromFPDFAvail(avail)->m_pDataAvail->IsDocAvail( |
| 142 | &hints_context); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 143 | } |
| 144 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 145 | FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 146 | FPDFAvail_GetDocument(FPDF_AVAIL avail, FPDF_BYTESTRING password) { |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 147 | auto* pDataAvail = FPDFAvailContextFromFPDFAvail(avail); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 148 | if (!pDataAvail) |
| 149 | return nullptr; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 150 | CPDF_Parser::Error error; |
| 151 | std::unique_ptr<CPDF_Document> document; |
| 152 | std::tie(error, document) = pDataAvail->m_pDataAvail->ParseDocument(password); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 153 | if (error != CPDF_Parser::SUCCESS) { |
| 154 | ProcessParseError(error); |
| 155 | return nullptr; |
| 156 | } |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 157 | CheckUnSupportError(document.get(), FPDF_ERR_SUCCESS); |
| 158 | return FPDFDocumentFromCPDFDocument(document.release()); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 159 | } |
| 160 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 161 | FPDF_EXPORT int FPDF_CALLCONV FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc) { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 162 | CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc); |
| 163 | return pDoc ? pDoc->GetParser()->GetFirstPageNo() : 0; |
| 164 | } |
| 165 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 166 | FPDF_EXPORT int FPDF_CALLCONV FPDFAvail_IsPageAvail(FPDF_AVAIL avail, |
| 167 | int page_index, |
| 168 | FX_DOWNLOADHINTS* hints) { |
| 169 | if (!avail) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 170 | return PDF_DATA_ERROR; |
| 171 | if (page_index < 0) |
| 172 | return PDF_DATA_NOTAVAIL; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 173 | FPDF_DownloadHintsContext hints_context(hints); |
| 174 | return FPDFAvailContextFromFPDFAvail(avail)->m_pDataAvail->IsPageAvail( |
| 175 | page_index, &hints_context); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 178 | FPDF_EXPORT int FPDF_CALLCONV FPDFAvail_IsFormAvail(FPDF_AVAIL avail, |
| 179 | FX_DOWNLOADHINTS* hints) { |
| 180 | if (!avail) |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 181 | return PDF_FORM_ERROR; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 182 | FPDF_DownloadHintsContext hints_context(hints); |
| 183 | return FPDFAvailContextFromFPDFAvail(avail)->m_pDataAvail->IsFormAvail( |
| 184 | &hints_context); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 185 | } |
| 186 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 187 | FPDF_EXPORT int FPDF_CALLCONV FPDFAvail_IsLinearized(FPDF_AVAIL avail) { |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 188 | if (!avail) |
| 189 | return PDF_LINEARIZATION_UNKNOWN; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame^] | 190 | return FPDFAvailContextFromFPDFAvail(avail)->m_pDataAvail->IsLinearizedPDF(); |
Philip P. Moltmann | 4d3acf4 | 2017-03-20 11:05:52 -0700 | [diff] [blame] | 191 | } |