Rename some fsdk files to cpdfsdk

This CL renames fsdk_common and fsdk_define to cpdfsdk_common and
cpdfsdk_helpers respectively.

Change-Id: I8ee7a308561f1ff2f510954444f953b0c8fed788
Reviewed-on: https://pdfium-review.googlesource.com/29371
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 462 insertions, 0 deletions

diff --git a/fpdfsdk/cpdfsdk_helpers.cpp b/fpdfsdk/cpdfsdk_helpers.cpp
new file mode 100644
index 0000000000..45c2674a4d
--- /dev/null
+++ b/fpdfsdk/cpdfsdk_helpers.cpp
@@ -0,0 +1,462 @@
+// Copyright 2018 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "fpdfsdk/cpdfsdk_helpers.h"
+
+#include "core/fpdfapi/cpdf_modulemgr.h"
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/parser/fpdf_parser_decode.h"
+#include "core/fpdfdoc/cpdf_annot.h"
+#include "core/fpdfdoc/cpdf_interform.h"
+#include "core/fpdfdoc/cpdf_metadata.h"
+#include "core/fxcrt/xml/cxml_content.h"
+#include "core/fxcrt/xml/cxml_element.h"
+#include "public/fpdf_ext.h"
+
+namespace {
+
+FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
+  return static_cast<FPDF_DOCUMENT>(doc);
+}
+
+bool RaiseUnSupportError(int nError) {
+  CFSDK_UnsupportInfo_Adapter* pAdapter =
+      CPDF_ModuleMgr::Get()->GetUnsupportInfoAdapter();
+  if (!pAdapter)
+    return false;
+
+  UNSUPPORT_INFO* info = static_cast<UNSUPPORT_INFO*>(pAdapter->GetUnspInfo());
+  if (info && info->FSDK_UnSupport_Handler)
+    info->FSDK_UnSupport_Handler(info, nError);
+  return true;
+}
+
+bool CheckSharedForm(const CXML_Element* pElement, ByteString cbName) {
+  size_t count = pElement->CountAttrs();
+  for (size_t i = 0; i < count; ++i) {
+    ByteString space;
+    ByteString name;
+    WideString value;
+    pElement->GetAttrByIndex(i, &space, &name, &value);
+    if (space == "xmlns" && name == "adhocwf" &&
+        value == L"http://ns.adobe.com/AcrobatAdhocWorkflow/1.0/") {
+      CXML_Element* pVersion =
+          pElement->GetElement("adhocwf", cbName.AsStringView(), 0);
+      if (!pVersion)
+        continue;
+      CXML_Content* pContent = ToContent(pVersion->GetChild(0));
+      if (!pContent)
+        continue;
+      switch (pContent->m_Content.GetInteger()) {
+        case 1:
+          RaiseUnSupportError(FPDF_UNSP_DOC_SHAREDFORM_ACROBAT);
+          break;
+        case 2:
+          RaiseUnSupportError(FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM);
+          break;
+        case 0:
+          RaiseUnSupportError(FPDF_UNSP_DOC_SHAREDFORM_EMAIL);
+          break;
+      }
+    }
+  }
+
+  size_t nCount = pElement->CountChildren();
+  for (size_t i = 0; i < nCount; ++i) {
+    CXML_Element* pChild = ToElement(pElement->GetChild(i));
+    if (pChild && CheckSharedForm(pChild, cbName))
+      return true;
+  }
+  return false;
+}
+
+#ifdef PDF_ENABLE_XFA
+class FPDF_FileHandlerContext : public IFX_SeekableStream {
+ public:
+  template <typename T, typename... Args>
+  friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+  ~FPDF_FileHandlerContext() override;
+
+  // IFX_SeekableStream:
+  FX_FILESIZE GetSize() override;
+  bool IsEOF() override;
+  FX_FILESIZE GetPosition() override;
+  bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
+  size_t ReadBlock(void* buffer, size_t size) override;
+  bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override;
+  bool Flush() override;
+
+  void SetPosition(FX_FILESIZE pos) { m_nCurPos = pos; }
+
+ protected:
+  explicit FPDF_FileHandlerContext(FPDF_FILEHANDLER* pFS);
+
+  FPDF_FILEHANDLER* m_pFS;
+  FX_FILESIZE m_nCurPos;
+};
+
+FPDF_FileHandlerContext::FPDF_FileHandlerContext(FPDF_FILEHANDLER* pFS) {
+  m_pFS = pFS;
+  m_nCurPos = 0;
+}
+
+FPDF_FileHandlerContext::~FPDF_FileHandlerContext() {
+  if (m_pFS && m_pFS->Release)
+    m_pFS->Release(m_pFS->clientData);
+}
+
+FX_FILESIZE FPDF_FileHandlerContext::GetSize() {
+  if (m_pFS && m_pFS->GetSize)
+    return (FX_FILESIZE)m_pFS->GetSize(m_pFS->clientData);
+  return 0;
+}
+
+bool FPDF_FileHandlerContext::IsEOF() {
+  return m_nCurPos >= GetSize();
+}
+
+FX_FILESIZE FPDF_FileHandlerContext::GetPosition() {
+  return m_nCurPos;
+}
+
+bool FPDF_FileHandlerContext::ReadBlock(void* buffer,
+                                        FX_FILESIZE offset,
+                                        size_t size) {
+  if (!buffer || !size || !m_pFS->ReadBlock)
+    return false;
+
+  if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
+                       (FPDF_DWORD)size) == 0) {
+    m_nCurPos = offset + size;
+    return true;
+  }
+  return false;
+}
+
+size_t FPDF_FileHandlerContext::ReadBlock(void* buffer, size_t size) {
+  if (!buffer || !size || !m_pFS->ReadBlock)
+    return 0;
+
+  FX_FILESIZE nSize = GetSize();
+  if (m_nCurPos >= nSize)
+    return 0;
+  FX_FILESIZE dwAvail = nSize - m_nCurPos;
+  if (dwAvail < (FX_FILESIZE)size)
+    size = static_cast<size_t>(dwAvail);
+  if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)m_nCurPos, buffer,
+                       (FPDF_DWORD)size) == 0) {
+    m_nCurPos += size;
+    return size;
+  }
+
+  return 0;
+}
+
+bool FPDF_FileHandlerContext::WriteBlock(const void* buffer,
+                                         FX_FILESIZE offset,
+                                         size_t size) {
+  if (!m_pFS || !m_pFS->WriteBlock)
+    return false;
+
+  if (m_pFS->WriteBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
+                        (FPDF_DWORD)size) == 0) {
+    m_nCurPos = offset + size;
+    return true;
+  }
+  return false;
+}
+
+bool FPDF_FileHandlerContext::Flush() {
+  if (!m_pFS || !m_pFS->Flush)
+    return true;
+
+  return m_pFS->Flush(m_pFS->clientData) == 0;
+}
+#endif  // PDF_ENABLE_XFA
+
+}  // namespace
+
+UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
+  return static_cast<UnderlyingDocumentType*>(doc);
+}
+
+UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
+  return static_cast<UnderlyingPageType*>(page);
+}
+
+CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
+#ifdef PDF_ENABLE_XFA
+  return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
+#else   // PDF_ENABLE_XFA
+  return UnderlyingFromFPDFDocument(doc);
+#endif  // PDF_ENABLE_XFA
+}
+
+FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
+#ifdef PDF_ENABLE_XFA
+  return doc ? FPDFDocumentFromUnderlying(
+                   new CPDFXFA_Context(pdfium::WrapUnique(doc)))
+             : nullptr;
+#else   // PDF_ENABLE_XFA
+  return FPDFDocumentFromUnderlying(doc);
+#endif  // PDF_ENABLE_XFA
+}
+
+CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
+#ifdef PDF_ENABLE_XFA
+  return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
+#else   // PDF_ENABLE_XFA
+  return UnderlyingFromFPDFPage(page);
+#endif  // PDF_ENABLE_XFA
+}
+
+CPDF_PageObject* CPDFPageObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) {
+  return static_cast<CPDF_PageObject*>(page_object);
+}
+
+ByteString CFXByteStringFromFPDFWideString(FPDF_WIDESTRING wide_string) {
+  return WideString::FromUTF16LE(wide_string,
+                                 WideString::WStringLength(wide_string))
+      .UTF8Encode();
+}
+
+CFX_DIBitmap* CFXBitmapFromFPDFBitmap(FPDF_BITMAP bitmap) {
+  return static_cast<CFX_DIBitmap*>(bitmap);
+}
+
+void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot) {
+  CPDF_Annot::Subtype nAnnotSubtype = pPDFAnnot->GetSubtype();
+  if (nAnnotSubtype == CPDF_Annot::Subtype::THREED) {
+    RaiseUnSupportError(FPDF_UNSP_ANNOT_3DANNOT);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::SCREEN) {
+    const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
+    ByteString cbString;
+    if (pAnnotDict->KeyExist("IT"))
+      cbString = pAnnotDict->GetStringFor("IT");
+    if (cbString.Compare("Img") != 0)
+      RaiseUnSupportError(FPDF_UNSP_ANNOT_SCREEN_MEDIA);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::MOVIE) {
+    RaiseUnSupportError(FPDF_UNSP_ANNOT_MOVIE);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::SOUND) {
+    RaiseUnSupportError(FPDF_UNSP_ANNOT_SOUND);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::RICHMEDIA) {
+    RaiseUnSupportError(FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::FILEATTACHMENT) {
+    RaiseUnSupportError(FPDF_UNSP_ANNOT_ATTACHMENT);
+  } else if (nAnnotSubtype == CPDF_Annot::Subtype::WIDGET) {
+    const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
+    ByteString cbString;
+    if (pAnnotDict->KeyExist("FT"))
+      cbString = pAnnotDict->GetStringFor("FT");
+    if (cbString.Compare("Sig") == 0)
+      RaiseUnSupportError(FPDF_UNSP_ANNOT_SIG);
+  }
+}
+
+void CheckUnSupportError(CPDF_Document* pDoc, uint32_t err_code) {
+  // Security
+  if (err_code == FPDF_ERR_SECURITY) {
+    RaiseUnSupportError(FPDF_UNSP_DOC_SECURITY);
+    return;
+  }
+  if (!pDoc)
+    return;
+
+  // Portfolios and Packages
+  const CPDF_Dictionary* pRootDict = pDoc->GetRoot();
+  if (pRootDict) {
+    ByteString cbString;
+    if (pRootDict->KeyExist("Collection")) {
+      RaiseUnSupportError(FPDF_UNSP_DOC_PORTABLECOLLECTION);
+      return;
+    }
+    if (pRootDict->KeyExist("Names")) {
+      CPDF_Dictionary* pNameDict = pRootDict->GetDictFor("Names");
+      if (pNameDict && pNameDict->KeyExist("EmbeddedFiles")) {
+        RaiseUnSupportError(FPDF_UNSP_DOC_ATTACHMENT);
+        return;
+      }
+      if (pNameDict && pNameDict->KeyExist("JavaScript")) {
+        CPDF_Dictionary* pJSDict = pNameDict->GetDictFor("JavaScript");
+        CPDF_Array* pArray = pJSDict ? pJSDict->GetArrayFor("Names") : nullptr;
+        if (pArray) {
+          for (size_t i = 0; i < pArray->GetCount(); i++) {
+            ByteString cbStr = pArray->GetStringAt(i);
+            if (cbStr.Compare("com.adobe.acrobat.SharedReview.Register") == 0) {
+              RaiseUnSupportError(FPDF_UNSP_DOC_SHAREDREVIEW);
+              return;
+            }
+          }
+        }
+      }
+    }
+  }
+
+  // SharedForm
+  CPDF_Metadata metaData(pDoc);
+  const CXML_Element* pElement = metaData.GetRoot();
+  if (pElement)
+    CheckSharedForm(pElement, "workflowType");
+
+#ifndef PDF_ENABLE_XFA
+  // XFA Forms
+  CPDF_InterForm interform(pDoc);
+  if (interform.HasXFAForm())
+    RaiseUnSupportError(FPDF_UNSP_DOC_XFAFORM);
+#endif  // PDF_ENABLE_XFA
+}
+
+#ifndef _WIN32
+int g_LastError;
+void SetLastError(int err) {
+  g_LastError = err;
+}
+
+int GetLastError() {
+  return g_LastError;
+}
+#endif  // _WIN32
+
+void ProcessParseError(CPDF_Parser::Error err) {
+  uint32_t err_code = FPDF_ERR_SUCCESS;
+  // Translate FPDFAPI error code to FPDFVIEW error code
+  switch (err) {
+    case CPDF_Parser::SUCCESS:
+      err_code = FPDF_ERR_SUCCESS;
+      break;
+    case CPDF_Parser::FILE_ERROR:
+      err_code = FPDF_ERR_FILE;
+      break;
+    case CPDF_Parser::FORMAT_ERROR:
+      err_code = FPDF_ERR_FORMAT;
+      break;
+    case CPDF_Parser::PASSWORD_ERROR:
+      err_code = FPDF_ERR_PASSWORD;
+      break;
+    case CPDF_Parser::HANDLER_ERROR:
+      err_code = FPDF_ERR_SECURITY;
+      break;
+  }
+  SetLastError(err_code);
+}
+
+// 0 bit: FPDF_POLICY_MACHINETIME_ACCESS
+static uint32_t foxit_sandbox_policy = 0xFFFFFFFF;
+
+void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable) {
+  switch (policy) {
+    case FPDF_POLICY_MACHINETIME_ACCESS: {
+      if (enable)
+        foxit_sandbox_policy |= 0x01;
+      else
+        foxit_sandbox_policy &= 0xFFFFFFFE;
+    } break;
+    default:
+      break;
+  }
+}
+
+FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy) {
+  switch (policy) {
+    case FPDF_POLICY_MACHINETIME_ACCESS:
+      return !!(foxit_sandbox_policy & 0x01);
+    default:
+      return false;
+  }
+}
+
+unsigned long DecodeStreamMaybeCopyAndReturnLength(const CPDF_Stream* stream,
+                                                   void* buffer,
+                                                   unsigned long buflen) {
+  ASSERT(stream);
+  uint8_t* data = stream->GetRawData();
+  uint32_t len = stream->GetRawSize();
+  CPDF_Dictionary* dict = stream->GetDict();
+  CPDF_Object* decoder = dict ? dict->GetDirectObjectFor("Filter") : nullptr;
+  if (decoder && (decoder->IsArray() || decoder->IsName())) {
+    // Decode the stream if one or more stream filters are specified.
+    uint8_t* decoded_data = nullptr;
+    uint32_t decoded_len = 0;
+    ByteString dummy_last_decoder;
+    CPDF_Dictionary* dummy_last_param;
+    if (PDF_DataDecode(data, len, dict, dict->GetIntegerFor("DL"), false,
+                       &decoded_data, &decoded_len, &dummy_last_decoder,
+                       &dummy_last_param)) {
+      if (buffer && buflen >= decoded_len)
+        memcpy(buffer, decoded_data, decoded_len);
+
+      // Free the buffer for the decoded data if it was allocated by
+      // PDF_DataDecode(). Note that for images with a single image-specific
+      // filter, |decoded_data| is directly assigned to be |data|, so
+      // |decoded_data| does not need to be freed.
+      if (decoded_data != data)
+        FX_Free(decoded_data);
+
+      return decoded_len;
+    }
+  }
+  // Copy the raw data and return its length if there is no valid filter
+  // specified or if decoding failed.
+  if (buffer && buflen >= len)
+    memcpy(buffer, data, len);
+
+  return len;
+}
+
+unsigned long Utf16EncodeMaybeCopyAndReturnLength(const WideString& text,
+                                                  void* buffer,
+                                                  unsigned long buflen) {
+  ByteString encoded_text = text.UTF16LE_Encode();
+  unsigned long len = encoded_text.GetLength();
+  if (buffer && len <= buflen)
+    memcpy(buffer, encoded_text.c_str(), len);
+  return len;
+}
+
+void FSRECTFFromCFXFloatRect(const CFX_FloatRect& rect, FS_RECTF* out_rect) {
+  out_rect->left = rect.left;
+  out_rect->top = rect.top;
+  out_rect->right = rect.right;
+  out_rect->bottom = rect.bottom;
+}
+
+CFX_FloatRect CFXFloatRectFromFSRECTF(const FS_RECTF& rect) {
+  return CFX_FloatRect(rect.left, rect.bottom, rect.right, rect.top);
+}
+
+const CPDF_Array* GetQuadPointsArrayFromDictionary(CPDF_Dictionary* dict) {
+  return dict ? dict->GetArrayFor("QuadPoints") : nullptr;
+}
+
+bool GetQuadPointsFromDictionary(CPDF_Dictionary* dict,
+                                 size_t quad_index,
+                                 FS_QUADPOINTSF* quad_points) {
+  ASSERT(quad_points);
+
+  const CPDF_Array* pArray = GetQuadPointsArrayFromDictionary(dict);
+  if (!pArray || quad_index >= pArray->GetCount() / 8)
+    return false;
+
+  quad_index *= 8;
+  quad_points->x1 = pArray->GetNumberAt(quad_index);
+  quad_points->y1 = pArray->GetNumberAt(quad_index + 1);
+  quad_points->x2 = pArray->GetNumberAt(quad_index + 2);
+  quad_points->y2 = pArray->GetNumberAt(quad_index + 3);
+  quad_points->x3 = pArray->GetNumberAt(quad_index + 4);
+  quad_points->y3 = pArray->GetNumberAt(quad_index + 5);
+  quad_points->x4 = pArray->GetNumberAt(quad_index + 6);
+  quad_points->y4 = pArray->GetNumberAt(quad_index + 7);
+  return true;
+}
+
+#ifdef PDF_ENABLE_XFA
+RetainPtr<IFX_SeekableStream> MakeSeekableStream(
+    FPDF_FILEHANDLER* pFilehandler) {
+  return pdfium::MakeRetain<FPDF_FileHandlerContext>(pFilehandler);
+}
+#endif  // PDF_ENABLE_XFA