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qpdf/qpdf/test_driver.cc

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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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <map>
static char const* whoami = 0;
void usage()
{
std::cerr << "Usage: " << whoami << " n filename" << 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;
};
void runtest(int n, char const* filename)
{
QPDF pdf;
PointerHolder<char> file_buf;
if (n == 0)
{
pdf.setAttemptRecovery(false);
}
if (n % 2 == 0)
{
pdf.processFile(filename);
}
else
{
// Exercise processMemoryFile
FILE* f = QUtil::fopen_wrapper(std::string("open ") + filename,
fopen(filename, "rb"));
fseek(f, 0, SEEK_END);
size_t size = (size_t) QUtil::ftell_off_t(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 ") + filename +
" 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 ") + filename +
" into memory: read " +
QUtil::int_to_string(bytes_read) + "; wanted " +
QUtil::int_to_string(size));
}
}
fclose(f);
pdf.processMemoryFile(filename, 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" << 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(), false, false, false);
std::cout << std::endl << "Uncompressed stream data:" << std::endl;
if (qtest.pipeStreamData(0, true, false, false))
{
std::cout.flush();
QUtil::binary_stdout();
out = new Pl_StdioFile("filtered", stdout);
qtest.pipeStreamData(out.getPointer(), true, false, false);
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(), true, false, false);
}
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(), true, true, false);
}
}
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.
qtest.getKey("/A").setArrayItem(1, QPDFObjectHandle::newInteger(5));
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, false, false, false);
Buffer* buf = bufpl.getBuffer();
unsigned char const* data = buf->getBuffer();
bool cleartext = false;
if ((buf->getSize() > 9) &&
(strncmp((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");
}
PointerHolder<Buffer> b = new Buffer(20);
unsigned char* bp = b->getBuffer();
memcpy(bp, (char*)"new data for stream\n", 20); // no null!
qstream.replaceStreamData(
b, 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((unsigned char*)"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(), b->getSize());
provider->badLength(true);
try
{
qstream.getStreamData();
std::cout << "oops -- getStreamData didn't throw" << std::endl;
}
catch (std::logic_error const& e)
{
std::cout << "exception: " << e.what() << std::endl;
}
provider->badLength(false);
QPDFWriter w(pdf, "a.pdf");
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
}
else if (n == 9)
{
QPDFObjectHandle root = pdf.getRoot();
PointerHolder<Buffer> b1 = new Buffer(20);
unsigned char* bp = b1->getBuffer();
memcpy(bp, (char*)"data for new stream\n", 20); // no null!
QPDFObjectHandle qstream = QPDFObjectHandle::newStream(&pdf, b1);
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;
}
PointerHolder<Buffer> b2 = new Buffer(22);
bp = b2->getBuffer();
memcpy(bp, (char*)"data for other stream\n", 22); // no null!
rstream.replaceStreamData(
b2, 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)
{
PointerHolder<Buffer> b1 = new Buffer(37);
unsigned char* bp = b1->getBuffer();
memcpy(bp, (char*)"BT /F1 12 Tf 72 620 Td (Baked) Tj ET\n", 37);
PointerHolder<Buffer> b2 = new Buffer(38);
bp = b2->getBuffer();
memcpy(bp, (char*)"BT /F1 18 Tf 72 520 Td (Mashed) Tj ET\n", 38);
std::vector<QPDFObjectHandle> pages = pdf.getAllPages();
pages[0].addPageContents(QPDFObjectHandle::newStream(&pdf, b1), true);
pages[0].addPageContents(QPDFObjectHandle::newStream(&pdf, b2), 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[1].getObjectID(), pages[1].getGeneration(),
pages[2].getObjectID(), pages[2].getGeneration());
// 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();
std::map<std::string, QPDFObjectHandle> dict_keys;
dict_keys["/NewDict"] = QPDFObjectHandle::newInteger(2);
QPDFObjectHandle new_dict = QPDFObjectHandle::newDictionary(dict_keys);
try
{
// Do it wrong first...
pdf.replaceObject(qdict.getObjectID(), qdict.getGeneration(),
qdict);
}
catch (std::logic_error)
{
std::cout << "caught logic error as expected" << std::endl;
}
pdf.replaceObject(qdict.getObjectID(), qdict.getGeneration(),
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.getObjectID(), qdict.getGeneration(),
qarray.getObjectID(), qarray.getGeneration());
// 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.getObjectByID(qdict.getObjectID(), qdict.getGeneration());
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[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
QPDFWriter w(pdf);
w.setOutputMemory();
w.setStaticID(true);
w.setStreamDataMode(qpdf_s_preserve);
w.write();
Buffer* b = w.getBuffer();
FILE* f = QUtil::fopen_wrapper(std::string("open a.pdf"),
fopen("a.pdf", "wb"));
fwrite(b->getBuffer(), b->getSize(), 1, f);
fclose(f);
delete b;
}
else
{
throw std::runtime_error(std::string("invalid test ") +
QUtil::int_to_string(n));
}
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)
{
usage();
}
try
{
int n = atoi(argv[1]);
char const* filename = argv[2];
runtest(n, filename);
}
catch (std::exception& e)
{
std::cerr << e.what() << std::endl;
exit(2);
}
return 0;
}
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