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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <list>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include "../public/fpdf_dataavail.h"
#include "../public/fpdf_ext.h"
#include "../public/fpdf_formfill.h"
#include "../public/fpdf_text.h"
#include "../public/fpdfview.h"
#include "image_diff_png.h"
#include "v8/include/libplatform/libplatform.h"
#include "v8/include/v8.h"
#ifdef _WIN32
#define snprintf _snprintf
#define PATH_SEPARATOR '\\'
#else
#define PATH_SEPARATOR '/'
#endif
#define PERSIST_MAX 1000
unsigned int persist_cnt;
enum OutputFormat {
OUTPUT_NONE,
OUTPUT_PPM,
OUTPUT_PNG,
#ifdef _WIN32
OUTPUT_BMP,
OUTPUT_EMF,
#endif
};
struct Options {
Options() : output_format(OUTPUT_NONE) { }
OutputFormat output_format;
std::string scale_factor_as_string;
std::string exe_path;
std::string bin_directory;
};
// Reads the entire contents of a file into a newly malloc'd buffer.
static char* GetFileContents(const char* filename, size_t* retlen) {
FILE* file = fopen(filename, "rb");
if (!file) {
fprintf(stderr, "Failed to open: %s\n", filename);
return NULL;
}
(void) fseek(file, 0, SEEK_END);
size_t file_length = ftell(file);
if (!file_length) {
return NULL;
}
(void) fseek(file, 0, SEEK_SET);
char* buffer = (char*) malloc(file_length);
if (!buffer) {
return NULL;
}
size_t bytes_read = fread(buffer, 1, file_length, file);
(void) fclose(file);
if (bytes_read != file_length) {
fprintf(stderr, "Failed to read: %s\n", filename);
free(buffer);
return NULL;
}
*retlen = bytes_read;
return buffer;
}
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
// Returns the full path for an external V8 data file based on either
// the currect exectuable path or an explicit override.
static std::string GetFullPathForSnapshotFile(const Options& options,
const std::string& filename) {
std::string result;
if (!options.bin_directory.empty()) {
result = options.bin_directory;
if (*options.bin_directory.rbegin() != PATH_SEPARATOR) {
result += PATH_SEPARATOR;
}
} else if (!options.exe_path.empty()) {
size_t last_separator = options.exe_path.rfind(PATH_SEPARATOR);
if (last_separator != std::string::npos) {
result = options.exe_path.substr(0, last_separator + 1);
}
}
result += filename;
return result;
}
// Reads an extenal V8 data file from the |options|-indicated location,
// returing true on success and false on error.
static bool GetExternalData(const Options& options,
const std::string& bin_filename,
v8::StartupData* result_data) {
std::string full_path = GetFullPathForSnapshotFile(options, bin_filename);
size_t data_length = 0;
char* data_buffer = GetFileContents(full_path.c_str(), &data_length);
if (!data_buffer) {
return false;
}
result_data->data = const_cast<const char*>(data_buffer);
result_data->raw_size = static_cast<int>(data_length);
return true;
}
#endif // V8_USE_EXTERNAL_STARTUP_DATA
static bool CheckDimensions(int stride, int width, int height) {
if (stride < 0 || width < 0 || height < 0)
return false;
if (height > 0 && width > INT_MAX / height)
return false;
return true;
}
static void WritePpm(const char* pdf_name, int num, const void* buffer_void,
int stride, int width, int height) {
const char* buffer = reinterpret_cast<const char*>(buffer_void);
if (!CheckDimensions(stride, width, height))
return;
int out_len = width * height;
if (out_len > INT_MAX / 3)
return;
out_len *= 3;
char filename[256];
snprintf(filename, sizeof(filename), "%s.%d.ppm", pdf_name, num);
FILE* fp = fopen(filename, "wb");
if (!fp)
return;
fprintf(fp, "P6\n# PDF test render\n%d %d\n255\n", width, height);
// Source data is B, G, R, unused.
// Dest data is R, G, B.
char* result = new char[out_len];
if (result) {
for (int h = 0; h < height; ++h) {
const char* src_line = buffer + (stride * h);
char* dest_line = result + (width * h * 3);
for (int w = 0; w < width; ++w) {
// R
dest_line[w * 3] = src_line[(w * 4) + 2];
// G
dest_line[(w * 3) + 1] = src_line[(w * 4) + 1];
// B
dest_line[(w * 3) + 2] = src_line[w * 4];
}
}
fwrite(result, out_len, 1, fp);
delete [] result;
}
fclose(fp);
}
static void WritePng(const char* pdf_name, int num, const void* buffer_void,
int stride, int width, int height) {
if (!CheckDimensions(stride, width, height))
return;
std::vector<unsigned char> png_encoding;
const unsigned char* buffer = static_cast<const unsigned char*>(buffer_void);
if (!image_diff_png::EncodeBGRAPNG(
buffer, width, height, stride, false, &png_encoding)) {
fprintf(stderr, "Failed to convert bitmap to PNG\n");
return;
}
char filename[256];
int chars_formatted = snprintf(
filename, sizeof(filename), "%s.%d.png", pdf_name, num);
if (chars_formatted < 0 ||
static_cast<size_t>(chars_formatted) >= sizeof(filename)) {
fprintf(stderr, "Filname %s is too long\n", filename);
return;
}
FILE* fp = fopen(filename, "wb");
if (!fp) {
fprintf(stderr, "Failed to open %s for output\n", filename);
return;
}
size_t bytes_written = fwrite(
&png_encoding.front(), 1, png_encoding.size(), fp);
if (bytes_written != png_encoding.size())
fprintf(stderr, "Failed to write to %s\n", filename);
(void) fclose(fp);
}
#ifdef _WIN32
static void WriteBmp(const char* pdf_name, int num, const void* buffer,
int stride, int width, int height) {
if (stride < 0 || width < 0 || height < 0)
return;
if (height > 0 && width > INT_MAX / height)
return;
int out_len = stride * height;
if (out_len > INT_MAX / 3)
return;
char filename[256];
snprintf(filename, sizeof(filename), "%s.%d.bmp", pdf_name, num);
FILE* fp = fopen(filename, "wb");
if (!fp)
return;
BITMAPINFO bmi = {};
bmi.bmiHeader.biSize = sizeof(bmi) - sizeof(RGBQUAD);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height; // top-down image
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
BITMAPFILEHEADER file_header = {};
file_header.bfType = 0x4d42;
file_header.bfSize = sizeof(file_header) + bmi.bmiHeader.biSize + out_len;
file_header.bfOffBits = file_header.bfSize - out_len;
fwrite(&file_header, sizeof(file_header), 1, fp);
fwrite(&bmi, bmi.bmiHeader.biSize, 1, fp);
fwrite(buffer, out_len, 1, fp);
fclose(fp);
}
void WriteEmf(FPDF_PAGE page, const char* pdf_name, int num) {
int width = static_cast<int>(FPDF_GetPageWidth(page));
int height = static_cast<int>(FPDF_GetPageHeight(page));
char filename[256];
snprintf(filename, sizeof(filename), "%s.%d.emf", pdf_name, num);
HDC dc = CreateEnhMetaFileA(NULL, filename, NULL, NULL);
HRGN rgn = CreateRectRgn(0, 0, width, height);
SelectClipRgn(dc, rgn);
DeleteObject(rgn);
SelectObject(dc, GetStockObject(NULL_PEN));
SelectObject(dc, GetStockObject(WHITE_BRUSH));
// If a PS_NULL pen is used, the dimensions of the rectangle are 1 pixel less.
Rectangle(dc, 0, 0, width + 1, height + 1);
FPDF_RenderPage(dc, page, 0, 0, width, height, 0,
FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
DeleteEnhMetaFile(CloseEnhMetaFile(dc));
}
#endif
int ExampleAppAlert(IPDF_JSPLATFORM*, FPDF_WIDESTRING msg, FPDF_WIDESTRING,
int, int) {
// Deal with differences between UTF16LE and wchar_t on this platform.
size_t characters = 0;
while (msg[characters]) {
++characters;
}
wchar_t* platform_string =
(wchar_t*)malloc((characters + 1) * sizeof(wchar_t));
for (size_t i = 0; i < characters + 1; ++i) {
unsigned char* ptr = (unsigned char*)&msg[i];
platform_string[i] = ptr[0] + 256 * ptr[1];
}
printf("Alert: %ls\n", platform_string);
free(platform_string);
return 0;
}
void ExampleDocGotoPage(IPDF_JSPLATFORM*, int pageNumber) {
printf("Goto Page: %d\n", pageNumber);
}
void ExampleUnsupportedHandler(UNSUPPORT_INFO*, int type) {
std::string feature = "Unknown";
switch (type) {
case FPDF_UNSP_DOC_XFAFORM:
feature = "XFA";
break;
case FPDF_UNSP_DOC_PORTABLECOLLECTION:
feature = "Portfolios_Packages";
break;
case FPDF_UNSP_DOC_ATTACHMENT:
case FPDF_UNSP_ANNOT_ATTACHMENT:
feature = "Attachment";
break;
case FPDF_UNSP_DOC_SECURITY:
feature = "Rights_Management";
break;
case FPDF_UNSP_DOC_SHAREDREVIEW:
feature = "Shared_Review";
break;
case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:
case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:
case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:
feature = "Shared_Form";
break;
case FPDF_UNSP_ANNOT_3DANNOT:
feature = "3D";
break;
case FPDF_UNSP_ANNOT_MOVIE:
feature = "Movie";
break;
case FPDF_UNSP_ANNOT_SOUND:
feature = "Sound";
break;
case FPDF_UNSP_ANNOT_SCREEN_MEDIA:
case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:
feature = "Screen";
break;
case FPDF_UNSP_ANNOT_SIG:
feature = "Digital_Signature";
break;
}
printf("Unsupported feature: %s.\n", feature.c_str());
}
bool ParseCommandLine(const std::vector<std::string>& args,
Options* options, std::list<std::string>* files) {
if (args.empty()) {
return false;
}
options->exe_path = args[0];
size_t cur_idx = 1;
for (; cur_idx < args.size(); ++cur_idx) {
const std::string& cur_arg = args[cur_idx];
if (cur_arg == "--ppm") {
if (options->output_format != OUTPUT_NONE) {
fprintf(stderr, "Duplicate or conflicting --ppm argument\n");
return false;
}
options->output_format = OUTPUT_PPM;
} else if (cur_arg == "--png") {
if (options->output_format != OUTPUT_NONE) {
fprintf(stderr, "Duplicate or conflicting --png argument\n");
return false;
}
options->output_format = OUTPUT_PNG;
}
#ifdef _WIN32
else if (cur_arg == "--emf") {
if (options->output_format != OUTPUT_NONE) {
fprintf(stderr, "Duplicate or conflicting --emf argument\n");
return false;
}
options->output_format = OUTPUT_EMF;
}
else if (cur_arg == "--bmp") {
if (options->output_format != OUTPUT_NONE) {
fprintf(stderr, "Duplicate or conflicting --bmp argument\n");
return false;
}
options->output_format = OUTPUT_BMP;
}
#endif // _WIN32
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
else if (cur_arg.size() > 10 && cur_arg.compare(0, 10, "--bin-dir=") == 0) {
if (!options->bin_directory.empty()) {
fprintf(stderr, "Duplicate --bin-dir argument\n");
return false;
}
options->bin_directory = cur_arg.substr(10);
}
#endif // V8_USE_EXTERNAL_STARTUP_DATA
else if (cur_arg.size() > 8 && cur_arg.compare(0, 8, "--scale=") == 0) {
if (!options->scale_factor_as_string.empty()) {
fprintf(stderr, "Duplicate --scale argument\n");
return false;
}
options->scale_factor_as_string = cur_arg.substr(8);
}
else
break;
}
if (cur_idx >= args.size()) {
fprintf(stderr, "No input files.\n");
return false;
}
for (size_t i = cur_idx; i < args.size(); i++) {
files->push_back(args[i]);
}
return true;
}
class TestLoader {
public:
TestLoader(const char* pBuf, size_t len);
const char* m_pBuf;
size_t m_Len;
};
TestLoader::TestLoader(const char* pBuf, size_t len)
: m_pBuf(pBuf), m_Len(len) {
}
int Get_Block(void* param, unsigned long pos, unsigned char* pBuf,
unsigned long size) {
TestLoader* pLoader = (TestLoader*) param;
if (pos + size < pos || pos + size > pLoader->m_Len) return 0;
memcpy(pBuf, pLoader->m_pBuf + pos, size);
return 1;
}
FPDF_BOOL Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) {
return true;
}
void Add_Segment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) {
}
void RenderPdf(const std::string& name, const char* pBuf, size_t len,
const Options& options) {
fprintf(stderr, "Rendering PDF file %s.\n", name.c_str());
IPDF_JSPLATFORM platform_callbacks;
memset(&platform_callbacks, '\0', sizeof(platform_callbacks));
platform_callbacks.version = 1;
platform_callbacks.app_alert = ExampleAppAlert;
platform_callbacks.Doc_gotoPage = ExampleDocGotoPage;
FPDF_FORMFILLINFO form_callbacks;
memset(&form_callbacks, '\0', sizeof(form_callbacks));
form_callbacks.version = 1;
form_callbacks.m_pJsPlatform = &platform_callbacks;
TestLoader loader(pBuf, len);
FPDF_FILEACCESS file_access;
memset(&file_access, '\0', sizeof(file_access));
file_access.m_FileLen = static_cast<unsigned long>(len);
file_access.m_GetBlock = Get_Block;
file_access.m_Param = &loader;
FX_FILEAVAIL file_avail;
memset(&file_avail, '\0', sizeof(file_avail));
file_avail.version = 1;
file_avail.IsDataAvail = Is_Data_Avail;
FX_DOWNLOADHINTS hints;
memset(&hints, '\0', sizeof(hints));
hints.version = 1;
hints.AddSegment = Add_Segment;
FPDF_DOCUMENT doc;
FPDF_AVAIL pdf_avail = FPDFAvail_Create(&file_avail, &file_access);
(void) FPDFAvail_IsDocAvail(pdf_avail, &hints);
if (!FPDFAvail_IsLinearized(pdf_avail)) {
fprintf(stderr, "Non-linearized path...\n");
doc = FPDF_LoadCustomDocument(&file_access, NULL);
} else {
fprintf(stderr, "Linearized path...\n");
doc = FPDFAvail_GetDocument(pdf_avail, NULL);
}
(void) FPDF_GetDocPermissions(doc);
(void) FPDFAvail_IsFormAvail(pdf_avail, &hints);
FPDF_FORMHANDLE form = FPDFDOC_InitFormFillEnvironment(doc, &form_callbacks);
FPDF_SetFormFieldHighlightColor(form, 0, 0xFFE4DD);
FPDF_SetFormFieldHighlightAlpha(form, 100);
int first_page = FPDFAvail_GetFirstPageNum(doc);
(void) FPDFAvail_IsPageAvail(pdf_avail, first_page, &hints);
int page_count = FPDF_GetPageCount(doc);
for (int i = 0; i < page_count; ++i) {
(void) FPDFAvail_IsPageAvail(pdf_avail, i, &hints);
}
FORM_DoDocumentJSAction(form);
FORM_DoDocumentOpenAction(form);
int rendered_pages = 0;
int bad_pages = 0;
for (int i = 0; i < page_count; ++i) {
FPDF_PAGE page = FPDF_LoadPage(doc, i);
if (!page) {
bad_pages ++;
continue;
}
FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
FORM_OnAfterLoadPage(page, form);
FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN);
double scale = 1.0;
if (!options.scale_factor_as_string.empty()) {
std::stringstream(options.scale_factor_as_string) >> scale;
}
int width = static_cast<int>(FPDF_GetPageWidth(page) * scale);
int height = static_cast<int>(FPDF_GetPageHeight(page) * scale);
FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
if (!bitmap) {
fprintf(stderr, "Page was too large to be rendered.\n");
bad_pages++;
continue;
}
FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
rendered_pages ++;
FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
int stride = FPDFBitmap_GetStride(bitmap);
const char* buffer =
reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));
switch (options.output_format) {
#ifdef _WIN32
case OUTPUT_BMP:
WriteBmp(name.c_str(), i, buffer, stride, width, height);
break;
case OUTPUT_EMF:
WriteEmf(page, name.c_str(), i);
break;
#endif
case OUTPUT_PNG:
WritePng(name.c_str(), i, buffer, stride, width, height);
break;
case OUTPUT_PPM:
WritePpm(name.c_str(), i, buffer, stride, width, height);
break;
default:
break;
}
FPDFBitmap_Destroy(bitmap);
FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_CLOSE);
FORM_OnBeforeClosePage(page, form);
FPDFText_ClosePage(text_page);
FPDF_ClosePage(page);
}
FORM_DoDocumentAAction(form, FPDFDOC_AACTION_WC);
FPDF_CloseDocument(doc);
FPDFDOC_ExitFormFillEnvironment(form);
FPDFAvail_Destroy(pdf_avail);
fprintf(stderr, "Rendered %d pages.\n", rendered_pages);
fprintf(stderr, "Skipped %d bad pages.\n", bad_pages);
}
static const char usage_string[] =
"Usage: pdfium_test [OPTION] [FILE]...\n"
" --bin-dir=<path> - override path to v8 external data\n"
" --scale=<number> - scale output size by number (e.g. 0.5)\n"
#ifdef _WIN32
" --bmp - write page images <pdf-name>.<page-number>.bmp\n"
" --emf - write page meta files <pdf-name>.<page-number>.emf\n"
#endif
" --png - write page images <pdf-name>.<page-number>.png\n"
" --ppm - write page images <pdf-name>.<page-number>.ppm\n";
int main(int argc, const char* argv[]) {
std::vector<std::string> args(argv, argv + argc);
Options options;
std::list<std::string> files;
if (!ParseCommandLine(args, &options, &files)) {
fprintf(stderr, "%s", usage_string);
return 1;
}
v8::V8::InitializeICU();
v8::Platform* platform = v8::platform::CreateDefaultPlatform();
v8::V8::InitializePlatform(platform);
v8::V8::Initialize();
// By enabling predictable mode, V8 won't post any background tasks.
static const char predictable_flag[] = "--predictable";
v8::V8::SetFlagsFromString(predictable_flag,
static_cast<int>(strlen(predictable_flag)));
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
v8::StartupData natives;
v8::StartupData snapshot;
if (!GetExternalData(options, "natives_blob.bin", &natives) ||
!GetExternalData(options, "snapshot_blob.bin", &snapshot)) {
return 1;
}
v8::V8::SetNativesDataBlob(&natives);
v8::V8::SetSnapshotDataBlob(&snapshot);
#endif // V8_USE_EXTERNAL_STARTUP_DATA
FPDF_InitLibrary();
std::string filename = files.front();
size_t file_length = 0;
try_again:
UNSUPPORT_INFO unsuppored_info;
memset(&unsuppored_info, '\0', sizeof(unsuppored_info));
unsuppored_info.version = 1;
unsuppored_info.FSDK_UnSupport_Handler = ExampleUnsupportedHandler;
FSDK_SetUnSpObjProcessHandler(&unsuppored_info);
//files.pop_front();
char* file_contents = GetFileContents(filename.c_str(), &file_length);
RenderPdf(filename, file_contents, file_length, options);
free(file_contents);
if (getenv("AFL_PERSISTENT") && persist_cnt++ < PERSIST_MAX) {
raise(SIGSTOP);
goto try_again;
}
FPDF_DestroyLibrary();
v8::V8::ShutdownPlatform();
delete platform;
return 0;
}
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