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d0e99f195a
qpdf/qpdf/test_driver.cc
Jay Berkenbilt d0e99f195a More robust handling of type errors 
Give objects descriptions and context so it is possible to issue
warnings instead of fatal errors for attempts to access objects of the
wrong type.
2018-02-18 21:06:27 -05:00

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// This program tests miscellaneous functionality in the qpdf library
// that we don't want to pollute the qpdf program with.
#include <qpdf/QPDF.hh>
#include <qpdf/QUtil.hh>
#include <qpdf/QTC.hh>
#include <qpdf/Pl_StdioFile.hh>
#include <qpdf/Pl_Buffer.hh>
#include <qpdf/Pl_Flate.hh>
#include <qpdf/QPDFWriter.hh>
#include <iostream>
#include <sstream>
#include <algorithm>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <map>
static char const* whoami = 0;
void usage()
{
std::cerr << "Usage: " << whoami << " n filename1 [arg2]"
<< std::endl;
exit(2);
}
class Provider: public QPDFObjectHandle::StreamDataProvider
{
public:
Provider(PointerHolder<Buffer> b) :
b(b),
bad_length(false)
{
}
virtual ~Provider()
{
}
virtual void provideStreamData(int objid, int generation,
Pipeline* p)
{
p->write(b->getBuffer(), b->getSize());
if (this->bad_length)
{
unsigned char ch = ' ';
p->write(&ch, 1);
}
p->finish();
}
void badLength(bool v)
{
this->bad_length = v;
}
private:
PointerHolder<Buffer> b;
bool bad_length;
};
class ParserCallbacks: public QPDFObjectHandle::ParserCallbacks
{
public:
virtual ~ParserCallbacks()
{
}
virtual void handleObject(QPDFObjectHandle);
virtual void handleEOF();
};
void
ParserCallbacks::handleObject(QPDFObjectHandle obj)
{
if (obj.isName() && (obj.getName() == "/Abort"))
{
std::cout << "test suite: terminating parsing" << std::endl;
terminateParsing();
}
std::cout << obj.getTypeName() << ": ";
if (obj.isInlineImage())
{
// Exercise getTypeCode
assert(obj.getTypeCode() == QPDFObject::ot_inlineimage);
std::cout << QUtil::hex_encode(obj.getInlineImageValue()) << std::endl;
}
else
{
std::cout << obj.unparse() << std::endl;
}
}
void
ParserCallbacks::handleEOF()
{
std::cout << "-EOF-" << std::endl;
}
class TokenFilter: public QPDFObjectHandle::TokenFilter
{
public:
TokenFilter()
{
}
virtual ~TokenFilter()
{
}
virtual void handleToken(QPDFTokenizer::Token const& t)
{
if (t == QPDFTokenizer::Token(QPDFTokenizer::tt_string, "Potato"))
{
// Exercise unparsing of strings by token constructor
writeToken(
QPDFTokenizer::Token(QPDFTokenizer::tt_string, "Salad"));
}
else
{
writeToken(t);
}
}
virtual void handleEOF()
{
writeToken(QPDFTokenizer::Token(QPDFTokenizer::tt_name, "/bye"));
write("\n");
}
};
static std::string getPageContents(QPDFObjectHandle page)
{
PointerHolder<Buffer> b1 =
page.getKey("/Contents").getStreamData();
return std::string(
reinterpret_cast<char *>(b1->getBuffer()), b1->getSize()) + "\0";
}
static void checkPageContents(QPDFObjectHandle page,
std::string const& wanted_string)
{
std::string contents = getPageContents(page);
if (contents.find(wanted_string) == std::string::npos)
{
std::cout << "didn't find " << wanted_string << " in "
<< contents << std::endl;
}
}
static QPDFObjectHandle createPageContents(QPDF& pdf, std::string const& text)
{
std::string contents = "BT /F1 15 Tf 72 720 Td (" + text + ") Tj ET\n";
return QPDFObjectHandle::newStream(&pdf, contents);
}
void runtest(int n, char const* filename1, char const* arg2)
{
// Most tests here are crafted to work on specific files. Look at
// the test suite to see how the test is invoked to find the file
// that the test is supposed to operate on.
if (n == 0)
{
// Throw in some random test cases that don't fit anywhere
// else. This is in addition to whatever else is going on in
// test 0.
// The code to trim user passwords looks for 0x28 (which is
// "(") since it marks the beginning of the padding. Exercise
// the code to make sure it skips over 0x28 characters that
// aren't part of padding.
std::string password(
"1234567890123456789012(45678\x28\xbf\x4e\x5e");
assert(password.length() == 32);
QPDF::trim_user_password(password);
assert(password == "1234567890123456789012(45678");
QPDFObjectHandle uninitialized;
assert(uninitialized.getTypeCode() == QPDFObject::ot_uninitialized);
assert(strcmp(uninitialized.getTypeName(), "uninitialized") == 0);
}
QPDF pdf;
PointerHolder<char> file_buf;
FILE* filep = 0;
if (n == 0)
{
pdf.setAttemptRecovery(false);
}
if (((n == 35) || (n == 36)) && (arg2 != 0))
{
// arg2 is password
pdf.processFile(filename1, arg2);
}
else if (n % 2 == 0)
{
if (n % 4 == 0)
{
QTC::TC("qpdf", "exercise processFile(name)");
pdf.processFile(filename1);
}
else
{
QTC::TC("qpdf", "exercise processFile(FILE*)");
filep = QUtil::safe_fopen(filename1, "rb");
pdf.processFile(filename1, filep, false);
}
}
else
{
QTC::TC("qpdf", "exercise processMemoryFile");
FILE* f = QUtil::safe_fopen(filename1, "rb");
fseek(f, 0, SEEK_END);
size_t size = QUtil::tell(f);
fseek(f, 0, SEEK_SET);
file_buf = PointerHolder<char>(true, new char[size]);
char* buf_p = file_buf.getPointer();
size_t bytes_read = 0;
size_t len = 0;
while ((len = fread(buf_p + bytes_read, 1, size - bytes_read, f)) > 0)
{
bytes_read += len;
}
if (bytes_read != size)
{
if (ferror(f))
{
throw std::runtime_error(
std::string("failure reading file ") + filename1 +
" into memory: read " +
QUtil::int_to_string(bytes_read) + "; wanted " +
QUtil::int_to_string(size));
}
else
{
throw std::logic_error(
std::string("premature eof reading file ") + filename1 +
" into memory: read " +
QUtil::int_to_string(bytes_read) + "; wanted " +
QUtil::int_to_string(size));
}
}
fclose(f);
pdf.processMemoryFile(filename1, buf_p, size);
}
if ((n == 0) || (n == 1))
{
QPDFObjectHandle trailer = pdf.getTrailer();
QPDFObjectHandle qtest = trailer.getKey("/QTest");
if (! trailer.hasKey("/QTest"))
{
// This will always happen when /QTest is null because
// hasKey returns false for null keys regardless of
// whether the key exists or not. That way there's never
// any difference between a key that is present and null
// and a key that is absent.
QTC::TC("qpdf", "main QTest implicit");
std::cout << "/QTest is implicit" << std::endl;
}
QTC::TC("qpdf", "main QTest indirect",
qtest.isIndirect() ? 1 : 0);
std::cout << "/QTest is "
<< (qtest.isIndirect() ? "in" : "")
<< "direct and has type "
<< qtest.getTypeName()
<< " (" << qtest.getTypeCode() << ")" << std::endl;
if (qtest.isNull())
{
QTC::TC("qpdf", "main QTest null");
std::cout << "/QTest is null" << std::endl;
}
else if (qtest.isBool())
{
QTC::TC("qpdf", "main QTest bool",
qtest.getBoolValue() ? 1 : 0);
std::cout << "/QTest is Boolean with value "
<< (qtest.getBoolValue() ? "true" : "false")
<< std::endl;
}
else if (qtest.isInteger())
{
QTC::TC("qpdf", "main QTest int");
std::cout << "/QTest is an integer with value "
<< qtest.getIntValue() << std::endl;
}
else if (qtest.isReal())
{
QTC::TC("qpdf", "main QTest real");
std::cout << "/QTest is a real number with value "
<< qtest.getRealValue() << std::endl;
}
else if (qtest.isName())
{
QTC::TC("qpdf", "main QTest name");
std::cout << "/QTest is a name with value "
<< qtest.getName() << std::endl;
}
else if (qtest.isString())
{
QTC::TC("qpdf", "main QTest string");
std::cout << "/QTest is a string with value "
<< qtest.getStringValue() << std::endl;
}
else if (qtest.isArray())
{
QTC::TC("qpdf", "main QTest array");
int n = qtest.getArrayNItems();
std::cout << "/QTest is an array with "
<< n << " items" << std::endl;
for (int i = 0; i < n; ++i)
{
QTC::TC("qpdf", "main QTest array indirect",
qtest.getArrayItem(i).isIndirect() ? 1 : 0);
std::cout << " item " << i << " is "
<< (qtest.getArrayItem(i).isIndirect() ? "in" : "")
<< "direct" << std::endl;
}
}
else if (qtest.isDictionary())
{
QTC::TC("qpdf", "main QTest dictionary");
std::cout << "/QTest is a dictionary" << std::endl;
std::set<std::string> keys = qtest.getKeys();
for (std::set<std::string>::iterator iter = keys.begin();
iter != keys.end(); ++iter)
{
QTC::TC("qpdf", "main QTest dictionary indirect",
(qtest.getKey(*iter).isIndirect() ? 1 : 0));
std::cout << " " << *iter << " is "
<< (qtest.getKey(*iter).isIndirect() ? "in" : "")
<< "direct" << std::endl;
}
}
else if (qtest.isStream())
{
QTC::TC("qpdf", "main QTest stream");
std::cout << "/QTest is a stream. Dictionary: "
<< qtest.getDict().unparse() << std::endl;
std::cout << "Raw stream data:" << std::endl;
std::cout.flush();
QUtil::binary_stdout();
PointerHolder<Pl_StdioFile> out = new Pl_StdioFile("raw", stdout);
qtest.pipeStreamData(out.getPointer(), 0, qpdf_dl_none);
std::cout << std::endl << "Uncompressed stream data:" << std::endl;
if (qtest.pipeStreamData(0, 0, qpdf_dl_all))
{
std::cout.flush();
QUtil::binary_stdout();
out = new Pl_StdioFile("filtered", stdout);
qtest.pipeStreamData(out.getPointer(), 0, qpdf_dl_all);
std::cout << std::endl << "End of stream data" << std::endl;
}
else
{
std::cout << "Stream data is not filterable." << std::endl;
}
}
else
{
// Should not happen!
std::cout << "/QTest is an unknown object" << std::endl;
}
std::cout << "unparse: " << qtest.unparse() << std::endl
<< "unparseResolved: " << qtest.unparseResolved()
<< std::endl;
}
else if (n == 2)
{
// Encrypted file. This test case is designed for a specific
// PDF file.
QPDFObjectHandle trailer = pdf.getTrailer();
std::cout << trailer.getKey("/Info").
getKey("/CreationDate").getStringValue() << std::endl;
std::cout << trailer.getKey("/Info").
getKey("/Producer").getStringValue() << std::endl;
QPDFObjectHandle encrypt = trailer.getKey("/Encrypt");
std::cout << encrypt.getKey("/O").unparse() << std::endl;
std::cout << encrypt.getKey("/U").unparse() << std::endl;
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle pages = root.getKey("/Pages");
QPDFObjectHandle kids = pages.getKey("/Kids");
QPDFObjectHandle page = kids.getArrayItem(1); // second page
QPDFObjectHandle contents = page.getKey("/Contents");
QUtil::binary_stdout();
PointerHolder<Pl_StdioFile> out = new Pl_StdioFile("filtered", stdout);
contents.pipeStreamData(out.getPointer(), 0, qpdf_dl_generalized);
}
else if (n == 3)
{
QPDFObjectHandle streams = pdf.getTrailer().getKey("/QStreams");
for (int i = 0; i < streams.getArrayNItems(); ++i)
{
QPDFObjectHandle stream = streams.getArrayItem(i);
std::cout << "-- stream " << i << " --" << std::endl;
std::cout.flush();
QUtil::binary_stdout();
PointerHolder<Pl_StdioFile> out =
new Pl_StdioFile("tokenized stream", stdout);
stream.pipeStreamData(out.getPointer(),
qpdf_ef_normalize, qpdf_dl_generalized);
}
}
else if (n == 4)
{
// Mutability testing: Make /QTest direct recursively, then
// copy to /Info. Also make some other mutations so we can
// tell the difference and ensure that the original /QTest
// isn't effected.
QPDFObjectHandle trailer = pdf.getTrailer();
QPDFObjectHandle qtest = trailer.getKey("/QTest");
qtest.makeDirect();
qtest.removeKey("/Subject");
qtest.replaceKey("/Author",
QPDFObjectHandle::newString("Mr. Potato Head"));
// qtest.A and qtest.B.A were originally the same object.
// They no longer are after makeDirect(). Mutate one of them
// and ensure the other is not changed. These test cases are
// crafted around a specific set of input files.
QPDFObjectHandle A = qtest.getKey("/A");
if (A.getArrayItem(0).getIntValue() == 1)
{
// Test mutators
A.setArrayItem(1, QPDFObjectHandle::newInteger(5)); // 1 5 3
A.insertItem(2, QPDFObjectHandle::newInteger(10)); // 1 5 10 3
A.appendItem(QPDFObjectHandle::newInteger(12)); // 1 5 10 3 12
A.eraseItem(3); // 1 5 10 12
A.insertItem(4, QPDFObjectHandle::newInteger(6)); // 1 5 10 12 6
A.insertItem(0, QPDFObjectHandle::newInteger(9)); // 9 1 5 10 12 6
}
else
{
std::vector<QPDFObjectHandle> items;
items.push_back(QPDFObjectHandle::newInteger(14));
items.push_back(QPDFObjectHandle::newInteger(15));
items.push_back(QPDFObjectHandle::newInteger(9));
A.setArrayFromVector(items);
}
trailer.replaceKey("/Info", pdf.makeIndirectObject(qtest));
QPDFWriter w(pdf, 0);
w.setQDFMode(true);
w.setStaticID(true);
w.write();
// Prevent "done" message from getting appended
exit(0);
}
else if (n == 5)
{
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
int pageno = 0;
for (std::vector<QPDFObjectHandle>::iterator iter = pages.begin();
iter != pages.end(); ++iter)
{
QPDFObjectHandle& page = *iter;
++pageno;
std::cout << "page " << pageno << ":" << std::endl;
std::cout << " images:" << std::endl;
std::map<std::string, QPDFObjectHandle> images =
page.getPageImages();
for (std::map<std::string, QPDFObjectHandle>::iterator iter =
images.begin(); iter != images.end(); ++iter)
{
std::string const& name = (*iter).first;
QPDFObjectHandle image = (*iter).second;
QPDFObjectHandle dict = image.getDict();
int width = dict.getKey("/Width").getIntValue();
int height = dict.getKey("/Height").getIntValue();
std::cout << " " << name
<< ": " << width << " x " << height
<< std::endl;
}
std::cout << " content:" << std::endl;
std::vector<QPDFObjectHandle> content = page.getPageContents();
for (std::vector<QPDFObjectHandle>::iterator iter = content.begin();
iter != content.end(); ++iter)
{
std::cout << " " << (*iter).unparse() << std::endl;
}
std::cout << "end page " << pageno << std::endl;
}
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle qstrings = root.getKey("/QStrings");
if (qstrings.isArray())
{
std::cout << "QStrings:" << std::endl;
int n = qstrings.getArrayNItems();
for (int i = 0; i < n; ++i)
{
std::cout << qstrings.getArrayItem(i).getUTF8Value()
<< std::endl;
}
}
QPDFObjectHandle qnumbers = root.getKey("/QNumbers");
if (qnumbers.isArray())
{
std::cout << "QNumbers:" << std::endl;
int n = qnumbers.getArrayNItems();
for (int i = 0; i < n; ++i)
{
std::cout << QUtil::double_to_string(
qnumbers.getArrayItem(i).getNumericValue(), 3)
<< std::endl;
}
}
}
else if (n == 6)
{
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle metadata = root.getKey("/Metadata");
if (! metadata.isStream())
{
throw std::logic_error("test 6 run on file with no metadata");
}
Pl_Buffer bufpl("buffer");
metadata.pipeStreamData(&bufpl, 0, qpdf_dl_none);
Buffer* buf = bufpl.getBuffer();
unsigned char const* data = buf->getBuffer();
bool cleartext = false;
if ((buf->getSize() > 9) &&
(strncmp(reinterpret_cast<char const*>(data),
"<?xpacket", 9) == 0))
{
cleartext = true;
}
delete buf;
std::cout << "encrypted="
<< (pdf.isEncrypted() ? 1 : 0)
<< "; cleartext="
<< (cleartext ? 1 : 0)
<< std::endl;
}
else if (n == 7)
{
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle qstream = root.getKey("/QStream");
if (! qstream.isStream())
{
throw std::logic_error("test 7 run on file with no QStream");
}
qstream.replaceStreamData(
"new data for stream\n",
QPDFObjectHandle::newNull(), QPDFObjectHandle::newNull());
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 8)
{
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle qstream = root.getKey("/QStream");
if (! qstream.isStream())
{
throw std::logic_error("test 7 run on file with no QStream");
}
Pl_Buffer p1("buffer");
Pl_Flate p2("compress", &p1, Pl_Flate::a_deflate);
p2.write(QUtil::unsigned_char_pointer("new data for stream\n"),
20); // no null!
p2.finish();
PointerHolder<Buffer> b = p1.getBuffer();
// This is a bogus way to use StreamDataProvider, but it does
// adequately test its functionality.
Provider* provider = new Provider(b);
PointerHolder<QPDFObjectHandle::StreamDataProvider> p = provider;
qstream.replaceStreamData(
p, QPDFObjectHandle::newName("/FlateDecode"),
QPDFObjectHandle::newNull());
provider->badLength(false);
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
// Linearize to force the provider to be called multiple times.
w.setLinearization(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
// Every time a provider pipes stream data, it has to provide
// the same amount of data.
provider->badLength(true);
try
{
qstream.getStreamData();
std::cout << "oops -- getStreamData didn't throw" << std::endl;
}
catch (std::exception const& e)
{
std::cout << "exception: " << e.what() << std::endl;
}
}
else if (n == 9)
{
QPDFObjectHandle root = pdf.getRoot();
// Explicitly exercise the Buffer version of newStream
PointerHolder<Buffer> buf = new Buffer(20);
unsigned char* bp = buf->getBuffer();
memcpy(bp, "data for new stream\n", 20); // no null!
QPDFObjectHandle qstream = QPDFObjectHandle::newStream(
&pdf, buf);
QPDFObjectHandle rstream = QPDFObjectHandle::newStream(&pdf);
try
{
rstream.getStreamData();
std::cout << "oops -- getStreamData didn't throw" << std::endl;
}
catch (std::logic_error const& e)
{
std::cout << "exception: " << e.what() << std::endl;
}
rstream.replaceStreamData(
"data for other stream\n",
QPDFObjectHandle::newNull(), QPDFObjectHandle::newNull());
root.replaceKey("/QStream", qstream);
root.replaceKey("/RStream", rstream);
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 10)
{
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
pages.at(0).addPageContents(
QPDFObjectHandle::newStream(
&pdf, "BT /F1 12 Tf 72 620 Td (Baked) Tj ET\n"), true);
pages.at(0).addPageContents(
QPDFObjectHandle::newStream(
&pdf, "BT /F1 18 Tf 72 520 Td (Mashed) Tj ET\n"), false);
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 11)
{
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle qstream = root.getKey("/QStream");
PointerHolder<Buffer> b1 = qstream.getStreamData();
PointerHolder<Buffer> b2 = qstream.getRawStreamData();
if ((b1->getSize() == 7) &&
(memcmp(b1->getBuffer(), "potato\n", 7) == 0))
{
std::cout << "filtered stream data okay" << std::endl;
}
if ((b2->getSize() == 15) &&
(memcmp(b2->getBuffer(), "706F7461746F0A\n", 15) == 0))
{
std::cout << "raw stream data okay" << std::endl;
}
}
else if (n == 12)
{
pdf.setOutputStreams(0, 0);
pdf.showLinearizationData();
}
else if (n == 13)
{
std::ostringstream out;
std::ostringstream err;
pdf.setOutputStreams(&out, &err);
pdf.showLinearizationData();
std::cout << "---output---" << std::endl
<< out.str()
<< "---error---" << std::endl
<< err.str();
}
else if (n == 14)
{
// Exercise swap and replace. This test case is designed for
// a specific file.
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
if (pages.size() != 4)
{
throw std::logic_error("test " + QUtil::int_to_string(n) +
" not called 4-page file");
}
// Swap pages 2 and 3
pdf.swapObjects(pages.at(1).getObjGen(), pages.at(2).getObjGen());
// Replace object and swap objects
QPDFObjectHandle trailer = pdf.getTrailer();
QPDFObjectHandle qdict = trailer.getKey("/QDict");
QPDFObjectHandle qarray = trailer.getKey("/QArray");
// Force qdict but not qarray to resolve
qdict.isDictionary();
QPDFObjectHandle new_dict = QPDFObjectHandle::newDictionary();
new_dict.replaceKey("/NewDict", QPDFObjectHandle::newInteger(2));
try
{
// Do it wrong first...
pdf.replaceObject(qdict.getObjGen(), qdict);
}
catch (std::logic_error)
{
std::cout << "caught logic error as expected" << std::endl;
}
pdf.replaceObject(qdict.getObjGen(), new_dict);
// Now qdict still points to the old dictionary
std::cout << "old dict: " << qdict.getKey("/Dict").getIntValue()
<< std::endl;
// Swap dict and array
pdf.swapObjects(qdict.getObjGen(), qarray.getObjGen());
// Now qarray will resolve to new object but qdict is still
// the old object
std::cout << "old dict: " << qdict.getKey("/Dict").getIntValue()
<< std::endl;
std::cout << "new dict: " << qarray.getKey("/NewDict").getIntValue()
<< std::endl;
// Reread qdict, now pointing to an array
qdict = pdf.getObjectByObjGen(qdict.getObjGen());
std::cout << "swapped array: " << qdict.getArrayItem(0).getName()
<< std::endl;
// Exercise getAsMap and getAsArray
std::vector<QPDFObjectHandle> array_elements =
qdict.getArrayAsVector();
std::map<std::string, QPDFObjectHandle> dict_items =
qarray.getDictAsMap();
if ((array_elements.size() == 1) &&
(array_elements.at(0).getName() == "/Array") &&
(dict_items.size() == 1) &&
(dict_items["/NewDict"].getIntValue() == 2))
{
std::cout << "array and dictionary contents are correct"
<< std::endl;
}
// Exercise writing to memory buffer
for (int i = 0; i < 2; ++i)
{
QPDFWriter w(pdf);
w.setOutputMemory();
// Exercise setOutputMemory with and without static ID
w.setStaticID(i == 0);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
Buffer* b = w.getBuffer();
std::string const filename = (i == 0 ? "a.pdf" : "b.pdf");
FILE* f = QUtil::safe_fopen(filename.c_str(), "wb");
fwrite(b->getBuffer(), b->getSize(), 1, f);
fclose(f);
delete b;
}
}
else if (n == 15)
{
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
// Reference to original page numbers for this test case are
// numbered from 0.
// Remove pages from various places, checking to make sure
// that our pages reference is getting updated.
assert(pages.size() == 10);
pdf.removePage(pages.back()); // original page 9
assert(pages.size() == 9);
pdf.removePage(*pages.begin()); // original page 0
assert(pages.size() == 8);
checkPageContents(pages.at(4), "Original page 5");
pdf.removePage(pages.at(4)); // original page 5
assert(pages.size() == 7);
checkPageContents(pages.at(4), "Original page 6");
checkPageContents(pages.at(0), "Original page 1");
checkPageContents(pages.at(6), "Original page 8");
// Insert pages
// Create some content streams.
std::vector<QPDFObjectHandle> contents;
contents.push_back(createPageContents(pdf, "New page 1"));
contents.push_back(createPageContents(pdf, "New page 0"));
contents.push_back(createPageContents(pdf, "New page 5"));
contents.push_back(createPageContents(pdf, "New page 6"));
contents.push_back(createPageContents(pdf, "New page 11"));
contents.push_back(createPageContents(pdf, "New page 12"));
// Create some page objects. Start with an existing
// dictionary and modify it. Using the results of
// getDictAsMap to create a new dictionary effectively creates
// a shallow copy.
QPDFObjectHandle page_template = pages.at(0);
std::vector<QPDFObjectHandle> new_pages;
for (std::vector<QPDFObjectHandle>::iterator iter = contents.begin();
iter != contents.end(); ++iter)
{
// We will retain indirect object references to other
// indirect objects other than page content.
QPDFObjectHandle page = page_template.shallowCopy();
page.replaceKey("/Contents", *iter);
if (iter == contents.begin())
{
// leave direct
new_pages.push_back(page);
}
else
{
new_pages.push_back(pdf.makeIndirectObject(page));
}
}
// Now insert the pages
pdf.addPage(new_pages.at(0), true);
checkPageContents(pages.at(0), "New page 1");
pdf.addPageAt(new_pages.at(1), true, pages.at(0));
assert(pages.at(0).getObjGen() == new_pages.at(1).getObjGen());
pdf.addPageAt(new_pages.at(2), true, pages.at(5));
assert(pages.at(5).getObjGen() == new_pages.at(2).getObjGen());
pdf.addPageAt(new_pages.at(3), false, pages.at(5));
assert(pages.at(6).getObjGen() == new_pages.at(3).getObjGen());
assert(pages.size() == 11);
pdf.addPage(new_pages.at(4), false);
assert(pages.at(11).getObjGen() == new_pages.at(4).getObjGen());
pdf.addPageAt(new_pages.at(5), false, pages.back());
assert(pages.size() == 13);
checkPageContents(pages.at(0), "New page 0");
checkPageContents(pages.at(1), "New page 1");
checkPageContents(pages.at(5), "New page 5");
checkPageContents(pages.at(6), "New page 6");
checkPageContents(pages.at(11), "New page 11");
checkPageContents(pages.at(12), "New page 12");
// Exercise writing to FILE*
FILE* out = QUtil::safe_fopen("a.pdf", "wb");
QPDFWriter w(pdf, "FILE* a.pdf", out, true);
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 16)
{
// Insert a page manually and then update the cache.
std::vector<QPDFObjectHandle> const& all_pages = pdf.getAllPages();
QPDFObjectHandle contents = createPageContents(pdf, "New page 10");
QPDFObjectHandle page =
pdf.makeIndirectObject(
QPDFObjectHandle(all_pages.at(0)).shallowCopy());
page.replaceKey("/Contents", contents);
// Insert the page manually.
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle pages = root.getKey("/Pages");
QPDFObjectHandle kids = pages.getKey("/Kids");
page.replaceKey("/Parent", pages);
pages.replaceKey(
"/Count",
QPDFObjectHandle::newInteger(1 + all_pages.size()));
kids.appendItem(page);
assert(all_pages.size() == 10);
pdf.updateAllPagesCache();
assert(all_pages.size() == 11);
assert(all_pages.back().getObjGen() == page.getObjGen());
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 17)
{
// The input file to this test case is broken to exercise an
// error condition.
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
pdf.removePage(pages.at(0));
std::cout << "you can't see this" << std::endl;
}
else if (n == 18)
{
// Remove a page and re-insert it in the same file.
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
// Remove pages from various places, checking to make sure
// that our pages reference is getting updated.
assert(pages.size() == 10);
QPDFObjectHandle page5 = pages.at(5);
pdf.removePage(page5);
pdf.addPage(page5, false);
assert(pages.size() == 10);
assert(pages.back().getObjGen() == page5.getObjGen());
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 19)
{
// Remove a page and re-insert it in the same file.
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
// Try to insert a page that's already there.
pdf.addPage(pages.at(5), false);
std::cout << "you can't see this" << std::endl;
}
else if (n == 20)
{
// Shallow copy an array
QPDFObjectHandle trailer = pdf.getTrailer();
QPDFObjectHandle qtest = trailer.getKey("/QTest");
QPDFObjectHandle copy = qtest.shallowCopy();
// Append shallow copy of a scalar
copy.appendItem(trailer.getKey("/Size").shallowCopy());
trailer.replaceKey("/QTest2", copy);
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 21)
{
// Try to shallow copy a stream
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
QPDFObjectHandle page = pages.at(0);
QPDFObjectHandle contents = page.getKey("/Contents");
contents.shallowCopy();
std::cout << "you can't see this" << std::endl;
}
else if (n == 22)
{
// Try to remove a page we don't have
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
QPDFObjectHandle page = pages.at(0);
pdf.removePage(page);
pdf.removePage(page);
std::cout << "you can't see this" << std::endl;
}
else if (n == 23)
{
std::vector<QPDFObjectHandle> const& pages = pdf.getAllPages();
pdf.removePage(pages.back());
}
else if (n == 24)
{
// Test behavior of reserved objects
QPDFObjectHandle res1 = QPDFObjectHandle::newReserved(&pdf);
QPDFObjectHandle res2 = QPDFObjectHandle::newReserved(&pdf);
QPDFObjectHandle trailer = pdf.getTrailer();
trailer.replaceKey("Array1", res1);
trailer.replaceKey("Array2", res2);
QPDFObjectHandle array1 = QPDFObjectHandle::newArray();
QPDFObjectHandle array2 = QPDFObjectHandle::newArray();
array1.appendItem(res2);
array1.appendItem(QPDFObjectHandle::newInteger(1));
array2.appendItem(res1);
array2.appendItem(QPDFObjectHandle::newInteger(2));
// Make sure trying to ask questions about a reserved object
// doesn't break it.
if (res1.isArray())
{
std::cout << "oops -- res1 is an array" << std::endl;
}
if (res1.isReserved())
{
std::cout << "res1 is still reserved after checking if array"
<< std::endl;
}
pdf.replaceReserved(res1, array1);
if (res1.isReserved())
{
std::cout << "oops -- res1 is still reserved" << std::endl;
}
else
{
std::cout << "res1 is no longer reserved" << std::endl;
}
res1.assertArray();
std::cout << "res1 is an array" << std::endl;
try
{
res2.unparseResolved();
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error: " << e.what() << std::endl;
}
try
{
res2.makeDirect();
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error: " << e.what() << std::endl;
}
pdf.replaceReserved(res2, array2);
res2.assertArray();
std::cout << "res2 is an array" << std::endl;
// Verify that the previously added reserved keys can be
// dereferenced properly now
int i1 = res1.getArrayItem(0).getArrayItem(1).getIntValue();
int i2 = res2.getArrayItem(0).getArrayItem(1).getIntValue();
if ((i1 == 2) && (i2 == 1))
{
std::cout << "circular access and lazy resolution worked" << std::endl;
}
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 25)
{
// The copy object tests are designed to work with a specific
// file. Look at the test suite for the file, and look at the
// file for comments about the file's structure.
// Copy qtest without crossing page boundaries. Should get O1
// and O2 and their streams but not O3 or any other pages.
assert(arg2 != 0);
QPDF newpdf;
newpdf.processFile(arg2);
QPDFObjectHandle qtest = pdf.getTrailer().getKey("/QTest");
newpdf.getTrailer().replaceKey(
"/QTest", newpdf.copyForeignObject(qtest));
QPDFWriter w(newpdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 26)
{
// Copy the O3 page using addPage. Copy qtest without
// crossing page boundaries. In addition to previous results,
// should get page O3 but no other pages including the page
// that O3 points to. Also, inherited object will have been
// pushed down and will be preserved.
assert(arg2 != 0);
QPDF newpdf;
newpdf.processFile(arg2);
QPDFObjectHandle qtest = pdf.getTrailer().getKey("/QTest");
QPDFObjectHandle O3 = qtest.getKey("/O3");
newpdf.addPage(O3, false);
newpdf.getTrailer().replaceKey(
"/QTest", newpdf.copyForeignObject(qtest));
QPDFWriter w(newpdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 27)
{
// Copy O3 and the page O3 refers to before copying qtest.
// Should get qtest plus only the O3 page and the page that O3
// points to. Inherited objects should be preserved.
assert(arg2 != 0);
QPDF newpdf;
newpdf.processFile(arg2);
QPDFObjectHandle qtest = pdf.getTrailer().getKey("/QTest");
QPDFObjectHandle O3 = qtest.getKey("/O3");
newpdf.addPage(O3.getKey("/OtherPage"), false);
newpdf.addPage(O3, false);
newpdf.getTrailer().replaceKey(
"/QTest", newpdf.copyForeignObject(qtest));
QPDFWriter w(newpdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 28)
{
// Copy foreign object errors
try
{
pdf.copyForeignObject(pdf.getTrailer().getKey("/QTest"));
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error: " << e.what() << std::endl;
}
try
{
pdf.copyForeignObject(QPDFObjectHandle::newInteger(1));
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error: " << e.what() << std::endl;
}
}
else if (n == 29)
{
// Detect mixed objects in QPDFWriter
assert(arg2 != 0);
QPDF other;
other.processFile(arg2);
// Should use copyForeignObject instead
other.getTrailer().replaceKey(
"/QTest", pdf.getTrailer().getKey("/QTest"));
try
{
QPDFWriter w(other, "a.pdf");
w.write();
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error: " << e.what() << std::endl;
}
}
else if (n == 30)
{
assert(arg2 != 0);
QPDF encrypted;
encrypted.processFile(arg2, "user");
QPDFWriter w(pdf, "b.pdf");
w.setStreamDataMode(qpdf_s_preserve);
w.copyEncryptionParameters(encrypted);
w.write();
// Make sure the contents are actually the same
QPDF final;
final.processFile("b.pdf", "user");
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
std::string orig_contents = getPageContents(pages.at(0));
pages = final.getAllPages();
std::string new_contents = getPageContents(pages.at(0));
if (orig_contents != new_contents)
{
std::cout << "oops -- page contents don't match" << std::endl
<< "original:\n" << orig_contents
<< "new:\n" << new_contents
<< std::endl;
}
}
else if (n == 31)
{
// Test object parsing from a string. The input file is not used.
QPDFObjectHandle o1 =
QPDFObjectHandle::parse(
"[/name 16059 3.14159 false\n"
" << /key true /other [ (string1) (string2) ] >> null]");
std::cout << o1.unparse() << std::endl;
QPDFObjectHandle o2 = QPDFObjectHandle::parse(" 12345 \f ");
assert(o2.isInteger() && (o2.getIntValue() == 12345));
try
{
QPDFObjectHandle::parse("[1 0 R]", "indirect test");
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::logic_error e)
{
std::cout << "logic error parsing indirect: " << e.what()
<< std::endl;
}
try
{
QPDFObjectHandle::parse("0 trailing", "trailing test");
std::cout << "oops -- didn't throw" << std::endl;
}
catch (std::runtime_error e)
{
std::cout << "trailing data: " << e.what()
<< std::endl;
}
}
else if (n == 32)
{
// Extra header text
char const* filenames[] = {"a.pdf", "b.pdf", "c.pdf", "d.pdf"};
for (int i = 0; i < 4; ++i)
{
bool linearized = ((i & 1) != 0);
bool newline = ((i & 2) != 0);
QPDFWriter w(pdf, filenames[i]);
w.setStaticID(true);
std::cout
<< "file: " << filenames[i] << std::endl
<< "linearized: " << (linearized ? "yes" : "no") << std::endl
<< "newline: " << (newline ? "yes" : "no") << std::endl;
w.setLinearization(linearized);
w.setExtraHeaderText(newline
? "%% Comment with newline\n"
: "%% Comment\n% No newline");
w.write();
}
}
else if (n == 33)
{
// Test writing to a custom pipeline
Pl_Buffer p("buffer");
QPDFWriter w(pdf);
w.setStaticID(true);
w.setOutputPipeline(&p);
w.write();
PointerHolder<Buffer> b = p.getBuffer();
FILE* f = QUtil::safe_fopen("a.pdf", "wb");
fwrite(b->getBuffer(), b->getSize(), 1, f);
fclose(f);
}
else if (n == 34)
{
// Look at Extensions dictionary
std::cout << "version: " << pdf.getPDFVersion() << std::endl
<< "extension level: " << pdf.getExtensionLevel() << std::endl
<< pdf.getRoot().getKey("/Extensions").unparse() << std::endl;
}
else if (n == 35)
{
// Extract attachments
std::map<std::string, PointerHolder<Buffer> > attachments;
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle names = root.getKey("/Names");
QPDFObjectHandle embeddedFiles = names.getKey("/EmbeddedFiles");
names = embeddedFiles.getKey("/Names");
for (int i = 0; i < names.getArrayNItems(); ++i)
{
QPDFObjectHandle item = names.getArrayItem(i);
if (item.isDictionary() &&
item.getKey("/Type").isName() &&
(item.getKey("/Type").getName() == "/Filespec") &&
item.getKey("/EF").isDictionary() &&
item.getKey("/EF").getKey("/F").isStream())
{
std::string filename = item.getKey("/F").getStringValue();
QPDFObjectHandle stream = item.getKey("/EF").getKey("/F");
attachments[filename] = stream.getStreamData();
}
}
for (std::map<std::string, PointerHolder<Buffer> >::iterator iter =
attachments.begin(); iter != attachments.end(); ++iter)
{
std::string const& filename = (*iter).first;
std::string data = std::string(
reinterpret_cast<char const*>((*iter).second->getBuffer()),
(*iter).second->getSize());
bool is_binary = false;
for (size_t i = 0; i < data.size(); ++i)
{
if ((data.at(i) < 0) || (data.at(i) > 126))
{
is_binary = true;
break;
}
}
if (is_binary)
{
std::string t;
for (size_t i = 0;
i < std::min(data.size(), static_cast<size_t>(20));
++i)
{
if ((data.at(i) >= 32) && (data.at(i) <= 126))
{
t += data.at(i);
}
else
{
t += ".";
}
}
t += " (" + QUtil::int_to_string(data.size()) + " bytes)";
data = t;
}
std::cout << filename << ":\n" << data << "--END--\n";
}
}
else if (n == 36)
{
// Extract raw unfilterable attachment
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle names = root.getKey("/Names");
QPDFObjectHandle embeddedFiles = names.getKey("/EmbeddedFiles");
names = embeddedFiles.getKey("/Names");
for (int i = 0; i < names.getArrayNItems(); ++i)
{
QPDFObjectHandle item = names.getArrayItem(i);
if (item.isDictionary() &&
item.getKey("/Type").isName() &&
(item.getKey("/Type").getName() == "/Filespec") &&
item.getKey("/EF").isDictionary() &&
item.getKey("/EF").getKey("/F").isStream() &&
(item.getKey("/F").getStringValue() == "attachment1.txt"))
{
std::string filename = item.getKey("/F").getStringValue();
QPDFObjectHandle stream = item.getKey("/EF").getKey("/F");
Pl_Buffer p1("buffer");
Pl_Flate p2("compress", &p1, Pl_Flate::a_inflate);
stream.pipeStreamData(&p2, 0, qpdf_dl_none);
PointerHolder<Buffer> buf = p1.getBuffer();
std::string data = std::string(
reinterpret_cast<char const*>(buf->getBuffer()),
buf->getSize());
std::cout << stream.getDict().unparse()
<< filename << ":\n" << data << "--END--\n";
}
}
}
else if (n == 37)
{
// Parse content streams of all pages
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
for (std::vector<QPDFObjectHandle>::iterator iter = pages.begin();
iter != pages.end(); ++iter)
{
QPDFObjectHandle page = *iter;
ParserCallbacks cb;
page.parsePageContents(&cb);
}
}
else if (n == 38)
{
// Designed for override-compressed-object.pdf
QPDFObjectHandle qtest = pdf.getRoot().getKey("/QTest");
for (int i = 0; i < qtest.getArrayNItems(); ++i)
{
std::cout << qtest.getArrayItem(i).unparseResolved() << std::endl;
}
}
else if (n == 39)
{
// Display image filter and color set for each image on each page
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
int pageno = 0;
for (std::vector<QPDFObjectHandle>::iterator p_iter =
pages.begin();
p_iter != pages.end(); ++p_iter)
{
std::cout << "page " << ++pageno << std::endl;
std::map<std::string, QPDFObjectHandle> images =
(*p_iter).getPageImages();
for (std::map<std::string, QPDFObjectHandle>::iterator i_iter =
images.begin(); i_iter != images.end(); ++i_iter)
{
QPDFObjectHandle image_dict = (*i_iter).second.getDict();
std::cout << "filter: "
<< image_dict.getKey("/Filter").unparseResolved()
<< ", color space: "
<< image_dict.getKey("/ColorSpace").unparseResolved()
<< std::endl;
}
}
}
else if (n == 40)
{
// Write PCLm. This requires specially crafted PDF files. This
// feature was implemented by Sahil Arora
// <sahilarora.535@gmail.com> as part of a Google Summer of
// Code project in 2017.
assert(arg2 != 0);
QPDFWriter w(pdf, arg2);
w.setPCLm(true);
w.setStaticID(true);
w.write();
}
else if (n == 41)
{
// Apply a token filter. This test case is crafted to work
// with coalesce.pdf.
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
for (std::vector<QPDFObjectHandle>::iterator iter =
pages.begin();
iter != pages.end(); ++iter)
{
(*iter).addContentTokenFilter(new TokenFilter);
}
QPDFWriter w(pdf, "a.pdf");
w.setQDFMode(true);
w.setStaticID(true);
w.write();
}
else if (n == 42)
{
// Access objects as wrong type. This test case is crafted to
// work with object-types.pdf.
QPDFObjectHandle qtest = pdf.getTrailer().getKey("/QTest");
QPDFObjectHandle array = qtest.getKey("/Dictionary").getKey("/Key2");
QPDFObjectHandle dictionary = qtest.getKey("/Dictionary");
QPDFObjectHandle integer = qtest.getKey("/Integer");
QPDFObjectHandle null = QPDFObjectHandle::newNull();
assert(array.isArray());
assert(dictionary.isDictionary());
assert("" == qtest.getStringValue());
array.getArrayItem(-1).assertNull();
array.getArrayItem(16059).assertNull();
integer.getArrayItem(0).assertNull();
integer.appendItem(null);
array.eraseItem(-1);
array.eraseItem(16059);
integer.eraseItem(0);
integer.insertItem(0, null);
integer.setArrayFromVector(std::vector<QPDFObjectHandle>());
integer.setArrayItem(0, null);
assert(0 == integer.getArrayNItems());
assert(integer.getArrayAsVector().empty());
assert(false == integer.getBoolValue());
assert(integer.getDictAsMap().empty());
assert(integer.getKeys().empty());
assert(false == integer.hasKey("/Potato"));
integer.removeKey("/Potato");
integer.replaceOrRemoveKey("/Potato", null);
integer.replaceOrRemoveKey("/Potato", QPDFObjectHandle::newInteger(1));
integer.replaceKey("/Potato", QPDFObjectHandle::newInteger(1));
qtest.getKey("/Integer").getKey("/Potato");
assert(integer.getInlineImageValue().empty());
assert(0 == dictionary.getIntValue());
assert("/QPDFFakeName" == integer.getName());
assert("QPDFFAKE" == integer.getOperatorValue());
assert("0.0" == dictionary.getRealValue());
assert(integer.getStringValue().empty());
assert(integer.getUTF8Value().empty());
assert(0.0 == dictionary.getNumericValue());
// Make sure error messages are okay for nested values
std::cerr << "One error\n";
assert(array.getArrayItem(0).getStringValue().empty());
std::cerr << "One error\n";
assert(dictionary.getKey("/Quack").getStringValue().empty());
assert(array.getArrayItem(1).isDictionary());
assert(array.getArrayItem(1).getKey("/K").isArray());
assert(array.getArrayItem(1).getKey("/K").getArrayItem(0).isName());
assert("/V" ==
array.getArrayItem(1).getKey("/K").getArrayItem(0).getName());
std::cerr << "Two errors\n";
assert(array.getArrayItem(16059).getStringValue().empty());
std::cerr << "One error\n";
array.getArrayItem(1).getKey("/K").getArrayItem(0).getStringValue();
// Stream dictionary
QPDFObjectHandle page = pdf.getAllPages()[0];
assert("/QPDFFakeName" ==
page.getKey("/Contents").getDict().getKey("/Potato").getName());
}
else
{
throw std::runtime_error(std::string("invalid test ") +
QUtil::int_to_string(n));
}
if (filep)
{
fclose(filep);
}
std::cout << "test " << n << " done" << std::endl;
}
int main(int argc, char* argv[])
{
QUtil::setLineBuf(stdout);
if ((whoami = strrchr(argv[0], '/')) == NULL)
{
whoami = argv[0];
}
else
{
++whoami;
}
// For libtool's sake....
if (strncmp(whoami, "lt-", 3) == 0)
{
whoami += 3;
}
if ((argc < 3) || (argc > 4))
{
usage();
}
try
{
int n = QUtil::string_to_int(argv[1]);
char const* filename1 = argv[2];
char const* arg2 = argv[3];
runtest(n, filename1, arg2);
}
catch (std::exception& e)
{
std::cerr << e.what() << std::endl;
exit(2);
}
return 0;
}
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