615 lines
20 KiB
PHP
615 lines
20 KiB
PHP
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<?php
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namespace setasign\Fpdi\functional\PdfParser;
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use PHPUnit\Framework\TestCase;
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use setasign\Fpdi\PdfParser\CrossReference\CrossReference;
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use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
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use setasign\Fpdi\PdfParser\PdfParser;
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use setasign\Fpdi\PdfParser\StreamReader;
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use setasign\Fpdi\PdfParser\Type\PdfArray;
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use setasign\Fpdi\PdfParser\Type\PdfBoolean;
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use setasign\Fpdi\PdfParser\Type\PdfDictionary;
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use setasign\Fpdi\PdfParser\Type\PdfHexString;
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use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
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use setasign\Fpdi\PdfParser\Type\PdfIndirectObjectReference;
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use setasign\Fpdi\PdfParser\Type\PdfName;
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use setasign\Fpdi\PdfParser\Type\PdfNumeric;
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use setasign\Fpdi\PdfParser\Type\PdfStream;
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use setasign\Fpdi\PdfParser\Type\PdfString;
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class CrossReferenceTest extends TestCase
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{
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public function handlingProvider()
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{
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$data = [];
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$data[] = [
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" " . // we do not support xrefs at the position 0
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"xref\n" .
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"0 5\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"0000003000 00000 n\r\n" .
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"0000004000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 5 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(5),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 2000,
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3 => 3000,
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4 => 4000
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"0 5\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"0000003000 00000 n\r\n" .
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"0000004000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 5 /Root 1 0 R>>\n" .
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"startref\n" . // <-------- without "x"
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"1\n" .
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"%%EOF",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(5),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 2000,
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3 => 3000,
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4 => 4000
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"1 5\r\n" . // <--- faulty subsection header
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"0000003000 00000 n\r\n" .
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"0000004000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 5 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(5),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 2000,
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3 => 3000,
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4 => 4000
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"0 3\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF\n" .
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"xref\n" .
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"3 2\n" .
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"0000003000 00000 n\r\n" .
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"0000004000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 5 /Prev 1 /Root 1 0 R>>\n" .
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"startxref\n" .
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"121\n" .
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"%%EOF\n",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(5),
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'Prev' => PdfNumeric::create(1),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 2000,
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3 => 3000,
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4 => 4000
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"0 3\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF\n" .
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"xref\n" .
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"1 2\n" .
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"0000001100 00000 n\r\n" .
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"0000002100 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Prev 1 /Root 1 0 R>>\n" .
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"startxref\n" .
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"121\n" .
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"%%EOF\n",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(3),
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'Prev' => PdfNumeric::create(1),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1100,
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2 => 2100
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"1 3\r\n" . // faulty subsection header but handled as it is, because there are more tables.
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF\n" .
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"xref\n" .
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"2 2\n" .
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"0000001100 00000 n\r\n" .
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"0000002100 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Prev 1 /Root 1 0 R>>\n" .
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"startxref\n" .
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"121\n" .
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"%%EOF\n",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(3),
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'Prev' => PdfNumeric::create(1),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 1100,
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3 => 2100
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]
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];
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$data[] = [
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"endobj\n" .
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"xref\n" .
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"0 18\n" .
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"0000000008 65535 f \n" .
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"0000000017 00000 n \n" .
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"0000000124 00000 n \n" .
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"0000000180 00000 n \n" .
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"0000000416 00000 n \n" .
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"0000000633 00000 n \n" .
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"0000000800 00000 n \n" .
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"0000001039 00000 n \n" .
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"0000000009 65535 f \n" .
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"0000000010 65535 f \n" .
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"0000000011 65535 f \n" .
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"0000000012 65535 f \n" .
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"0000000013 65535 f \n" .
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"0000000014 65535 f \n" .
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"0000000000 65535 f \n" .
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"0000001646 00000 n \n" .
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"0000001801 00000 n \n" .
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"0000081568 00000 n \n" .
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"trailer\n" .
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"<</Size 18/Root 1 0 R/Info 7 0 R/ID[<4D4F0C8F2B4F3F498F00EB925AE7B9D0><4D4F0C8F2B4F3F498F00EB925AE7B9D0>] >>\n" .
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"startxref\n" .
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"7\n" .
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"%%EOF\n" .
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"xref\n" .
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"0 0\n" .
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"trailer\n" .
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"<</Size 18/Root 1 0 R/Info 7 0 R/ID[<4D4F0C8F2B4F3F498F00EB925AE7B9D0><4D4F0C8F2B4F3F498F00EB925AE7B9D0>] /Prev 7/XRefStm 81568>>\n" .
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"startxref\n" .
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"512\n" .
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"%%EOF",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(18),
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'Root' => PdfIndirectObjectReference::create(1, 0),
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'Info' => PdfIndirectObjectReference::create(7, 0),
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'ID' => PdfArray::create([
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PdfHexString::create('4D4F0C8F2B4F3F498F00EB925AE7B9D0'),
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PdfHexString::create('4D4F0C8F2B4F3F498F00EB925AE7B9D0'),
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]),
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'Prev' => PdfNumeric::create(7),
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'XRefStm' => PdfNumeric::create(81568)
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]),
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[
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1 => 17,
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2 => 124,
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6 => 800,
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9 => false,
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10 => false
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]
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];
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// test additional token after %%EOF
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$data[] = [
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" " .
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"xref\n" .
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"0 5\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"0000003000 00000 n\r\n" .
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"0000004000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 5 /Root 1 0 R>>\n" .
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"startxref\n" .
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"1\n" .
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"%%EOF\n" .
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"<let's confuse",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(5),
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'Root' => PdfIndirectObjectReference::create(1, 0)
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]),
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[
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1 => 1000,
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2 => 2000,
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3 => 3000,
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4 => 4000
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]
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];
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$data[] = [
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" " .
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"xref\n" .
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"0 2\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 2 /Root 1 0 R /Prev 0>>\n" . // this /Prev entry is ignored silently
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"startxref\n" .
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"1\n" .
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"%%EOF",
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PdfDictionary::create([
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'Size' => PdfNumeric::create(2),
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'Root' => PdfIndirectObjectReference::create(1, 0),
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'Prev' => PdfNumeric::create(0)
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]),
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[
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1 => 1000,
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]
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];
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return $data;
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}
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/**
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* @param $string
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* @param $expectedTrailer
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* @param $expectedObjects
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* @dataProvider handlingProvider
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*/
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public function testHandling($string, $expectedTrailer, $expectedObjects)
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{
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$stream = StreamReader::createByString($string);
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$parser = new PdfParser($stream);
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$xref = new CrossReference($parser);
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$trailer = $xref->getTrailer();
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$this->assertEquals($expectedTrailer, $trailer);
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foreach ($expectedObjects as $objectId => $position) {
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$this->assertSame($position, $xref->getOffsetFor($objectId));
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}
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}
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public function testWithInvalidTokenAfterStartXrefKeyword()
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{
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$pdf = "startxref\nTOKEN";
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$stream = StreamReader::createByString($pdf);
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$parser = new PdfParser($stream);
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$this->expectException(CrossReferenceException::class);
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$this->expectExceptionCode(CrossReferenceException::INVALID_DATA);
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new CrossReference($parser);
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}
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public function testWithInvalidPrevValue()
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{
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$pdf =
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"xref\n" .
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"0 3\r\n" .
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"0000000000 65535 f\r\n" .
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"0000001000 00000 n\r\n" .
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"0000002000 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Root 1 0 R>>\n" .
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"startxref\n" .
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"0\n" .
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"%%EOF\n" .
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"xref\n" .
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"1 2\n" .
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"0000001100 00000 n\r\n" .
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"0000002100 00000 n\r\n" .
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"trailer\n" .
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"<</Size 3 /Prev 10 /Root 1 0 R>>\n" .
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"startxref\n" .
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"120\n" .
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"%%EOF\n";
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$stream = StreamReader::createByString($pdf);
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$parser = new PdfParser($stream);
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|
$this->expectException(CrossReferenceException::class);
|
||
|
|
$this->expectExceptionCode(CrossReferenceException::INVALID_DATA);
|
||
|
|
new CrossReference($parser);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public function getIndirectObjectProvider()
|
||
|
|
{
|
||
|
|
$data = [];
|
||
|
|
|
||
|
|
$path = __DIR__ . '/../../../_files/pdfs/';
|
||
|
|
|
||
|
|
$data[] = [
|
||
|
|
$path . 'Word2010.pdf',
|
||
|
|
[
|
||
|
|
1 => PdfIndirectObject::create(
|
||
|
|
1,
|
||
|
|
0,
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Type' => PdfName::create('Catalog'),
|
||
|
|
'Pages' => PdfIndirectObjectReference::create(2, 0),
|
||
|
|
'Lang' => PdfString::create('de-DE'),
|
||
|
|
'StructTreeRoot' => PdfIndirectObjectReference::create(8, 0),
|
||
|
|
'MarkInfo' => PdfDictionary::create([
|
||
|
|
'Marked' => PdfBoolean::create(true)
|
||
|
|
])
|
||
|
|
])
|
||
|
|
),
|
||
|
|
2 => PdfIndirectObject::create(
|
||
|
|
2,
|
||
|
|
0,
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Type' => PdfName::create('Pages'),
|
||
|
|
'Count' => PdfNumeric::create(1),
|
||
|
|
'Kids' => PdfArray::create([
|
||
|
|
PdfIndirectObjectReference::create(3, 0)
|
||
|
|
])
|
||
|
|
])
|
||
|
|
),
|
||
|
|
17 => PdfIndirectObject::create(
|
||
|
|
17,
|
||
|
|
0,
|
||
|
|
PdfStream::create(
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Type' => PdfName::create('XRef'),
|
||
|
|
'Size' => PdfNumeric::create(17),
|
||
|
|
'W' => PdfArray::create([
|
||
|
|
PdfNumeric::create(1),
|
||
|
|
PdfNumeric::create(4),
|
||
|
|
PdfNumeric::create(2)
|
||
|
|
]),
|
||
|
|
'Root' => PdfIndirectObjectReference::create(1, 0),
|
||
|
|
'Info' => PdfIndirectObjectReference::create(7, 0),
|
||
|
|
'ID' => PdfArray::create([
|
||
|
|
PdfHexString::create('4D4F0C8F2B4F3F498F00EB925AE7B9D0'),
|
||
|
|
PdfHexString::create('4D4F0C8F2B4F3F498F00EB925AE7B9D0')
|
||
|
|
]),
|
||
|
|
'Filter' => PdfName::create('FlateDecode'),
|
||
|
|
'Length' => PdfNumeric::create(71)
|
||
|
|
]),
|
||
|
|
'anything for testing'
|
||
|
|
)
|
||
|
|
)
|
||
|
|
]
|
||
|
|
];
|
||
|
|
|
||
|
|
$data[] = [
|
||
|
|
$path . 'Boombastic-Box.pdf',
|
||
|
|
[
|
||
|
|
1 => PdfIndirectObject::create(
|
||
|
|
1,
|
||
|
|
0,
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Nums' => PdfArray::create([
|
||
|
|
PdfNumeric::create(0),
|
||
|
|
PdfIndirectObjectReference::create(2, 0)
|
||
|
|
])
|
||
|
|
])
|
||
|
|
),
|
||
|
|
|
||
|
|
2 => PdfIndirectObject::create(
|
||
|
|
2,
|
||
|
|
0,
|
||
|
|
PdfDictionary::create([
|
||
|
|
'S' => PdfName::create('D'),
|
||
|
|
'St' => PdfNumeric::create(9)
|
||
|
|
])
|
||
|
|
),
|
||
|
|
11 => PdfIndirectObject::create(
|
||
|
|
11,
|
||
|
|
0,
|
||
|
|
PdfStream::create(
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Filter' => PdfName::create('FlateDecode'),
|
||
|
|
'Length' => PdfNumeric::create(1430)
|
||
|
|
]),
|
||
|
|
'anything for testing'
|
||
|
|
)
|
||
|
|
),
|
||
|
|
30 => PdfIndirectObject::create(
|
||
|
|
30,
|
||
|
|
0,
|
||
|
|
PdfStream::create(
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Length' => PdfNumeric::create(4932),
|
||
|
|
'Subtype' => PdfName::create('XML'),
|
||
|
|
'Type' => PdfName::create('Metadata')
|
||
|
|
]),
|
||
|
|
'anything for testing'
|
||
|
|
)
|
||
|
|
)
|
||
|
|
]
|
||
|
|
];
|
||
|
|
|
||
|
|
$data[] = [
|
||
|
|
$path . 'filters/lzw/999998.pdf',
|
||
|
|
[
|
||
|
|
2 => PdfIndirectObject::create(
|
||
|
|
2,
|
||
|
|
0,
|
||
|
|
PdfStream::create(
|
||
|
|
PdfDictionary::create([
|
||
|
|
'Filter' => PdfName::create('LZWDecode'),
|
||
|
|
'Length' => PdfIndirectObjectReference::create(3, 0)
|
||
|
|
]),
|
||
|
|
'anything for testing'
|
||
|
|
)
|
||
|
|
)
|
||
|
|
]
|
||
|
|
];
|
||
|
|
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param $filename
|
||
|
|
* @param array $expectedResults
|
||
|
|
* @dataProvider getIndirectObjectProvider
|
||
|
|
*/
|
||
|
|
public function testGetIndirectObject($filename, array $expectedResults)
|
||
|
|
{
|
||
|
|
$stream = StreamReader::createByFile($filename);
|
||
|
|
$parser = new PdfParser($stream);
|
||
|
|
$xref = new CrossReference($parser);
|
||
|
|
|
||
|
|
foreach ($expectedResults AS $objectId => $expectedResult) {
|
||
|
|
$object = $xref->getIndirectObject($objectId);
|
||
|
|
|
||
|
|
$this->assertEquals($expectedResult->objectNumber, $object->objectNumber);
|
||
|
|
$this->assertEquals($expectedResult->generationNumber, $object->generationNumber);
|
||
|
|
|
||
|
|
$this->assertSame(get_class($expectedResult->value), get_class($object->value));
|
||
|
|
|
||
|
|
if ($object->value instanceof PdfStream) {
|
||
|
|
$this->assertEquals($expectedResult->value->value, $object->value->value);
|
||
|
|
} else {
|
||
|
|
$this->assertEquals($expectedResult->value, $object->value);
|
||
|
|
}
|
||
|
|
#$this->assertEquals($expectedResult, $object);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->assertGreaterThan(0, $expectedResults);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function testBehaviourOnCompressedXref()
|
||
|
|
{
|
||
|
|
$stream = StreamReader::createByFile(__DIR__ . '/../../../_files/pdfs/compressed-xref.pdf');
|
||
|
|
$parser = new PdfParser($stream);
|
||
|
|
$this->expectException(CrossReferenceException::class);
|
||
|
|
$this->expectExceptionCode(CrossReferenceException::COMPRESSED_XREF);
|
||
|
|
new CrossReference($parser);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Test the behavior of a single cross-reference while the startxref key points to the offset 0.
|
||
|
|
*
|
||
|
|
* @throws CrossReferenceException
|
||
|
|
* @throws \setasign\Fpdi\PdfParser\Type\PdfTypeException
|
||
|
|
*/
|
||
|
|
public function testBehaviourWithByteOffsetZero()
|
||
|
|
{
|
||
|
|
$pdf = "%PDF-1.7\n" .
|
||
|
|
"%\xE2\xE3\xCF\xD3\n" .
|
||
|
|
"1 0 obj\n" .
|
||
|
|
"<<>>" .
|
||
|
|
"xref\n" .
|
||
|
|
"0 2\r\n" .
|
||
|
|
"0000000000 65535 f\r\n" .
|
||
|
|
"0000000015 00000 n\r\n" .
|
||
|
|
"trailer\n" .
|
||
|
|
"<</Size 2 /Root 1 0 R>>\n" .
|
||
|
|
"startxref\n" .
|
||
|
|
"0\n" . // this offset is ignored because it is faulty
|
||
|
|
"%%EOF";
|
||
|
|
|
||
|
|
$stream = StreamReader::createByString($pdf);
|
||
|
|
$parser = new PdfParser($stream);
|
||
|
|
$this->expectException(CrossReferenceException::class);
|
||
|
|
$this->expectExceptionCode(CrossReferenceException::NO_XREF_FOUND);
|
||
|
|
new CrossReference($parser);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function testBehaviourWithHeaderOffsetWhichIsUsedInRealByteOffsets()
|
||
|
|
{
|
||
|
|
$pdf = "abcd\n" . // 5
|
||
|
|
"%PDF-1.7\n" . // 9
|
||
|
|
"%\xE2\xE3\xCF\xD3\n" . // 6
|
||
|
|
"1 0 obj\n" . // 8
|
||
|
|
"<<>>" . // 4
|
||
|
|
"xref\n" . // 5
|
||
|
|
"0 2\r\n" .
|
||
|
|
"0000000000 65535 f\r\n" .
|
||
|
|
"0000000020 00000 n\r\n" .
|
||
|
|
"trailer\n" .
|
||
|
|
"<</Size 2 /Root 1 0 R>>\n" .
|
||
|
|
"startxref\n" .
|
||
|
|
"32\n" .
|
||
|
|
"%%EOF";
|
||
|
|
|
||
|
|
$stream = StreamReader::createByString($pdf);
|
||
|
|
$parser = new PdfParser($stream);
|
||
|
|
$xref = $parser->getCrossReference();
|
||
|
|
$object = $xref->getIndirectObject(1);
|
||
|
|
|
||
|
|
$this->assertEquals(PdfIndirectObject::create(1, 0, PdfDictionary::create([])), $object);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function testBehaviourWithWrongObjectTypeAttXrefOffset()
|
||
|
|
{
|
||
|
|
$pdf = "%PDF-1.7\n" .
|
||
|
|
"%\xE2\xE3\xCF\xD3\n" .
|
||
|
|
"1 0 obj\n" .
|
||
|
|
"<<>>" .
|
||
|
|
"xref\n" .
|
||
|
|
"0 2\r\n" .
|
||
|
|
"0000000000 65535 f\r\n" .
|
||
|
|
"0000000015 00000 n\r\n" .
|
||
|
|
"trailer\n" .
|
||
|
|
"<</Size 2 /Root 1 0 R>>\n" .
|
||
|
|
"startxref\n" .
|
||
|
|
"15\n" . //
|
||
|
|
"%%EOF";
|
||
|
|
|
||
|
|
$stream = StreamReader::createByString($pdf);
|
||
|
|
$parser = new PdfParser($stream);
|
||
|
|
$this->expectException(CrossReferenceException::class);
|
||
|
|
$this->expectExceptionCode(CrossReferenceException::INVALID_DATA);
|
||
|
|
new CrossReference($parser);
|
||
|
|
}
|
||
|
|
}
|