| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_util.h" |
| #include "pdf/pdfium/fuzzers/pdfium_xfa_lpm_fuzzer/simple_xfa_pdf.h" |
| |
| namespace pdfium_xfa_lpm_fuzzer { |
| |
| namespace { |
| |
| const char kSimplePdfTemplate[] = R"(%PDF-1.7 |
| % |
| |
| 1 0 obj << |
| /XFA 5 0 R |
| >> |
| endobj |
| 2 0 obj << |
| /Type /Pages |
| /Count 1 |
| /Kids [3 0 R] |
| >> |
| endobj |
| 3 0 obj << |
| /Type /Page |
| /MediaBox [0 0 600 800] |
| /Parent 2 0 R |
| >> |
| endobj |
| 4 0 obj << |
| /Extensions << |
| /ADBE << |
| /BaseVersion /1.0 |
| /ExtensionLevel 8 |
| >> |
| >> |
| /Pages 2 0 R |
| /Type /Catalog |
| /AcroForm 1 0 R |
| /NeedsRendering true |
| >> |
| endobj |
| 5 0 obj << |
| /Length $1 |
| >> |
| stream |
| $2 |
| endstream |
| endobj |
| xref |
| 6 0 |
| 0000000000 65535 f |
| 0000000015 00000 n |
| 0000000047 00000 n |
| 0000000104 00000 n |
| 0000000175 00000 n |
| 0000000327 00000 n |
| trailer << |
| /Size 6 |
| /Root 4 0 R |
| >> |
| startxref |
| $3 |
| %%EOF)"; |
| |
| } // namespace |
| |
| std::string CreateSimpleXfaPdf(const std::string& xfa_string) { |
| // Add 1 for newline before endstream. |
| std::string xfa_stream_len = base::NumberToString(xfa_string.size() + 1); |
| // Each placeholder is two bytes. Two of them precede xref. |
| const size_t kPlaceholderSizes = 2 * 2; |
| static const size_t kCurrentXrefPosition = |
| std::string(kSimplePdfTemplate).find("xref"); |
| std::string startxref = |
| base::NumberToString(kCurrentXrefPosition - kPlaceholderSizes + |
| xfa_string.size() + xfa_stream_len.size() + 1); |
| std::vector<std::string> replacements( |
| {xfa_stream_len, xfa_string, startxref}); |
| return base::ReplaceStringPlaceholders(kSimplePdfTemplate, replacements, |
| nullptr); |
| } |
| |
| } // namespace pdfium_xfa_lpm_fuzzer |
