1 // Copyright (c) 2015 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 #include "embedder_test.h"
6 
7 #include <limits.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 
12 #include <list>
13 #include <string>
14 #include <utility>
15 #include <vector>
16 
17 #include "../core/include/fxcrt/fx_system.h"
18 #include "../public/fpdf_text.h"
19 #include "../public/fpdfview.h"
20 #include "testing/gmock/include/gmock/gmock.h"
21 #include "v8/include/libplatform/libplatform.h"
22 #include "v8/include/v8.h"
23 
24 #ifdef _WIN32
25 #define snprintf _snprintf
26 #define PATH_SEPARATOR '\\'
27 #else
28 #define PATH_SEPARATOR '/'
29 #endif
30 
31 namespace {
32 
33 const char* g_exe_path_ = nullptr;
34 
35 // Reads the entire contents of a file into a newly malloc'd buffer.
GetFileContents(const char * filename,size_t * retlen)36 static char* GetFileContents(const char* filename, size_t* retlen) {
37   FILE* file = fopen(filename, "rb");
38   if (!file) {
39     fprintf(stderr, "Failed to open: %s\n", filename);
40     return nullptr;
41   }
42   (void) fseek(file, 0, SEEK_END);
43   size_t file_length = ftell(file);
44   if (!file_length) {
45     return nullptr;
46   }
47   (void) fseek(file, 0, SEEK_SET);
48   char* buffer = (char*) malloc(file_length);
49   if (!buffer) {
50     return nullptr;
51   }
52   size_t bytes_read = fread(buffer, 1, file_length, file);
53   (void) fclose(file);
54   if (bytes_read != file_length) {
55     fprintf(stderr, "Failed to read: %s\n", filename);
56     free(buffer);
57     return nullptr;
58   }
59   *retlen = bytes_read;
60   return buffer;
61 }
62 
63 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
64 // Returns the full path for an external V8 data file based on either
65 // the currect exectuable path or an explicit override.
GetFullPathForSnapshotFile(const std::string & exe_path,const std::string & filename)66 static std::string GetFullPathForSnapshotFile(const std::string& exe_path,
67                                               const std::string& filename) {
68   std::string result;
69   if (!exe_path.empty()) {
70     size_t last_separator = exe_path.rfind(PATH_SEPARATOR);
71     if (last_separator != std::string::npos)  {
72       result = exe_path.substr(0, last_separator + 1);
73     }
74   }
75   result += filename;
76   return result;
77 }
78 
79 // Reads an extenal V8 data file from the |options|-indicated location,
80 // returing true on success and false on error.
GetExternalData(const std::string & exe_path,const std::string & filename,v8::StartupData * result_data)81 static bool GetExternalData(const std::string& exe_path,
82                             const std::string& filename,
83                             v8::StartupData* result_data) {
84   std::string full_path = GetFullPathForSnapshotFile(exe_path, filename);
85   size_t data_length = 0;
86   char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
87   if (!data_buffer) {
88     return false;
89   }
90   result_data->data = const_cast<const char*>(data_buffer);
91   result_data->raw_size = data_length;
92   return true;
93 }
94 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
95 
96 }  // namespace
97 
98 class TestLoader {
99  public:
100   TestLoader(const char* pBuf, size_t len);
101 
102   const char* m_pBuf;
103   size_t m_Len;
104 };
105 
TestLoader(const char * pBuf,size_t len)106 TestLoader::TestLoader(const char* pBuf, size_t len)
107     : m_pBuf(pBuf), m_Len(len) {
108 }
109 
Get_Block(void * param,unsigned long pos,unsigned char * pBuf,unsigned long size)110 int Get_Block(void* param, unsigned long pos, unsigned char* pBuf,
111               unsigned long size) {
112   TestLoader* pLoader = (TestLoader*) param;
113   if (pos + size < pos || pos + size > pLoader->m_Len) return 0;
114   memcpy(pBuf, pLoader->m_pBuf + pos, size);
115   return 1;
116 }
117 
Is_Data_Avail(FX_FILEAVAIL * pThis,size_t offset,size_t size)118 FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
119   return true;
120 }
121 
Add_Segment(FX_DOWNLOADHINTS * pThis,size_t offset,size_t size)122 void Add_Segment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) {
123 }
124 
EmbedderTest()125 EmbedderTest::EmbedderTest() :
126       document_(nullptr),
127       form_handle_(nullptr),
128       avail_(nullptr),
129       loader_(nullptr),
130       file_length_(0),
131       file_contents_(nullptr) {
132   memset(&hints_, 0, sizeof(hints_));
133   memset(&file_access_, 0, sizeof(file_access_));
134   memset(&file_avail_, 0, sizeof(file_avail_));
135   default_delegate_ = new EmbedderTest::Delegate();
136   delegate_ = default_delegate_;
137 }
138 
~EmbedderTest()139 EmbedderTest::~EmbedderTest() {
140   delete default_delegate_;
141 }
142 
SetUp()143 void EmbedderTest::SetUp() {
144     v8::V8::InitializeICU();
145 
146     platform_ = v8::platform::CreateDefaultPlatform();
147     v8::V8::InitializePlatform(platform_);
148     v8::V8::Initialize();
149 
150     // By enabling predictable mode, V8 won't post any background tasks.
151     const char predictable_flag[] = "--predictable";
152     v8::V8::SetFlagsFromString(predictable_flag,
153                                static_cast<int>(strlen(predictable_flag)));
154 
155 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
156     ASSERT_TRUE(GetExternalData(g_exe_path_, "natives_blob.bin", &natives_));
157     ASSERT_TRUE(GetExternalData(g_exe_path_, "snapshot_blob.bin", &snapshot_));
158     v8::V8::SetNativesDataBlob(&natives_);
159     v8::V8::SetSnapshotDataBlob(&snapshot_);
160 #endif  // V8_USE_EXTERNAL_STARTUP_DATA
161 
162     FPDF_InitLibrary();
163 
164     UNSUPPORT_INFO* info = static_cast<UNSUPPORT_INFO*>(this);
165     memset(info, 0, sizeof(UNSUPPORT_INFO));
166     info->version = 1;
167     info->FSDK_UnSupport_Handler = UnsupportedHandlerTrampoline;
168     FSDK_SetUnSpObjProcessHandler(info);
169   }
170 
TearDown()171 void EmbedderTest::TearDown() {
172   if (document_) {
173     FORM_DoDocumentAAction(form_handle_, FPDFDOC_AACTION_WC);
174     FPDF_CloseDocument(document_);
175     FPDFDOC_ExitFormFillEnvironment(form_handle_);
176   }
177   FPDFAvail_Destroy(avail_);
178   FPDF_DestroyLibrary();
179   v8::V8::ShutdownPlatform();
180   delete platform_;
181   delete loader_;
182   free(file_contents_);
183 }
184 
OpenDocument(const std::string & filename)185 bool EmbedderTest::OpenDocument(const std::string& filename) {
186   file_contents_ = GetFileContents(filename.c_str(), &file_length_);
187   if (!file_contents_) {
188     return false;
189   }
190 
191   loader_ = new TestLoader(file_contents_, file_length_);
192   file_access_.m_FileLen = static_cast<unsigned long>(file_length_);
193   file_access_.m_GetBlock = Get_Block;
194   file_access_.m_Param = loader_;
195 
196   file_avail_.version = 1;
197   file_avail_.IsDataAvail = Is_Data_Avail;
198 
199   hints_.version = 1;
200   hints_.AddSegment = Add_Segment;
201 
202   avail_ = FPDFAvail_Create(&file_avail_, &file_access_);
203   (void) FPDFAvail_IsDocAvail(avail_, &hints_);
204 
205   if (!FPDFAvail_IsLinearized(avail_)) {
206     document_ = FPDF_LoadCustomDocument(&file_access_, nullptr);
207   } else {
208     document_ = FPDFAvail_GetDocument(avail_, nullptr);
209   }
210 
211   (void) FPDF_GetDocPermissions(document_);
212   (void) FPDFAvail_IsFormAvail(avail_, &hints_);
213 
214   IPDF_JSPLATFORM* platform = static_cast<IPDF_JSPLATFORM*>(this);
215   memset(platform, 0, sizeof(IPDF_JSPLATFORM));
216   platform->version = 1;
217   platform->app_alert = AlertTrampoline;
218 
219   FPDF_FORMFILLINFO* formfillinfo = static_cast<FPDF_FORMFILLINFO*>(this);
220   memset(formfillinfo, 0, sizeof(FPDF_FORMFILLINFO));
221   formfillinfo->version = 1;
222   formfillinfo->FFI_SetTimer = SetTimerTrampoline;
223   formfillinfo->FFI_KillTimer = KillTimerTrampoline;
224   formfillinfo->m_pJsPlatform = platform;
225 
226   form_handle_ = FPDFDOC_InitFormFillEnvironment(document_, formfillinfo);
227   FPDF_SetFormFieldHighlightColor(form_handle_, 0, 0xFFE4DD);
228   FPDF_SetFormFieldHighlightAlpha(form_handle_, 100);
229 
230   return true;
231 }
232 
DoOpenActions()233 void EmbedderTest::DoOpenActions() {
234   FORM_DoDocumentJSAction(form_handle_);
235   FORM_DoDocumentOpenAction(form_handle_);
236 }
237 
GetFirstPageNum()238 int EmbedderTest::GetFirstPageNum() {
239   int first_page = FPDFAvail_GetFirstPageNum(document_);
240   (void) FPDFAvail_IsPageAvail(avail_, first_page, &hints_);
241   return first_page;
242 }
243 
GetPageCount()244 int EmbedderTest::GetPageCount() {
245   int page_count = FPDF_GetPageCount(document_);
246   for (int i = 0; i < page_count; ++i) {
247     (void) FPDFAvail_IsPageAvail(avail_, i, &hints_);
248   }
249   return page_count;
250 }
251 
LoadPage(int page_number)252 FPDF_PAGE EmbedderTest::LoadPage(int page_number) {
253   FPDF_PAGE page = FPDF_LoadPage(document_, page_number);
254   if (!page) {
255     return nullptr;
256   }
257   FORM_OnAfterLoadPage(page, form_handle_);
258   FORM_DoPageAAction(page, form_handle_, FPDFPAGE_AACTION_OPEN);
259   return page;
260 }
261 
RenderPage(FPDF_PAGE page)262 FPDF_BITMAP EmbedderTest::RenderPage(FPDF_PAGE page) {
263   int width = static_cast<int>(FPDF_GetPageWidth(page));
264   int height = static_cast<int>(FPDF_GetPageHeight(page));
265   FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
266   FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
267   FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
268   FPDF_FFLDraw(form_handle_, bitmap, page, 0, 0, width, height, 0, 0);
269   return bitmap;
270 }
271 
UnloadPage(FPDF_PAGE page)272 void EmbedderTest::UnloadPage(FPDF_PAGE page) {
273   FORM_DoPageAAction(page, form_handle_, FPDFPAGE_AACTION_CLOSE);
274   FORM_OnBeforeClosePage(page, form_handle_);
275   FPDF_ClosePage(page);
276 }
277 
278 // static
UnsupportedHandlerTrampoline(UNSUPPORT_INFO * info,int type)279 void EmbedderTest::UnsupportedHandlerTrampoline(UNSUPPORT_INFO* info,
280                                                 int type) {
281   EmbedderTest* test = static_cast<EmbedderTest*>(info);
282   test->delegate_->UnsupportedHandler(type);
283 }
284 
285 // static
AlertTrampoline(IPDF_JSPLATFORM * platform,FPDF_WIDESTRING message,FPDF_WIDESTRING title,int type,int icon)286 int EmbedderTest::AlertTrampoline(IPDF_JSPLATFORM* platform,
287                                   FPDF_WIDESTRING message,
288                                   FPDF_WIDESTRING title,
289                                   int type,
290                                   int icon) {
291   EmbedderTest* test = static_cast<EmbedderTest*>(platform);
292   return test->delegate_->Alert(message, title, type, icon);
293 }
294 
295 // static
SetTimerTrampoline(FPDF_FORMFILLINFO * info,int msecs,TimerCallback fn)296 int EmbedderTest::SetTimerTrampoline(FPDF_FORMFILLINFO* info,
297                                      int msecs, TimerCallback fn) {
298   EmbedderTest* test = static_cast<EmbedderTest*>(info);
299   return test->delegate_->SetTimer(msecs, fn);
300 }
301 
302 // static
KillTimerTrampoline(FPDF_FORMFILLINFO * info,int id)303 void EmbedderTest::KillTimerTrampoline(FPDF_FORMFILLINFO* info, int id) {
304   EmbedderTest* test = static_cast<EmbedderTest*>(info);
305   return test->delegate_->KillTimer(id);
306 }
307 
308 // Can't use gtest-provided main since we need to stash the path to the
309 // executable in order to find the external V8 binary data files.
main(int argc,char ** argv)310 int main(int argc, char** argv) {
311   g_exe_path_ = argv[0];
312   testing::InitGoogleTest(&argc, argv);
313   testing::InitGoogleMock(&argc, argv);
314   return RUN_ALL_TESTS();
315 }
316