// Copyright 2017 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <memory>
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#include <string>
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#include <vector>
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#include "public/fpdf_attachment.h"
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#include "public/fpdfview.h"
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#include "testing/embedder_test.h"
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static constexpr char kDateKey[] = "CreationDate";
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static constexpr char kChecksumKey[] = "CheckSum";
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class FPDFAttachmentEmbeddertest : public EmbedderTest {};
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TEST_F(FPDFAttachmentEmbeddertest, ExtractAttachments) {
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// Open a file with two attachments.
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ASSERT_TRUE(OpenDocument("embedded_attachments.pdf"));
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EXPECT_EQ(2, FPDFDoc_GetAttachmentCount(document()));
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// Retrieve the first attachment.
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FPDF_ATTACHMENT attachment = FPDFDoc_GetAttachment(document(), 0);
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ASSERT_TRUE(attachment);
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// Check that the name of the first attachment is correct.
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unsigned long len = FPDFAttachment_GetName(attachment, nullptr, 0);
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std::vector<char> buf(len);
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EXPECT_EQ(12u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"1.txt",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Check that the content of the first attachment is correct.
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len = FPDFAttachment_GetFile(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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ASSERT_EQ(4u, FPDFAttachment_GetFile(attachment, buf.data(), len));
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EXPECT_EQ(std::string("test"), std::string(buf.data(), 4));
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// Check that a non-existent key does not exist.
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EXPECT_FALSE(FPDFAttachment_HasKey(attachment, "none"));
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// Check that the string value of a non-string dictionary entry is empty.
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static constexpr char kSizeKey[] = "Size";
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EXPECT_EQ(FPDF_OBJECT_NUMBER,
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FPDFAttachment_GetValueType(attachment, kSizeKey));
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EXPECT_EQ(2u,
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FPDFAttachment_GetStringValue(attachment, kSizeKey, nullptr, 0));
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// Check that the creation date of the first attachment is correct.
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len = FPDFAttachment_GetStringValue(attachment, kDateKey, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(48u, FPDFAttachment_GetStringValue(attachment, kDateKey, buf.data(),
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len));
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EXPECT_STREQ(L"D:20170712214438-07'00'",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Retrieve the second attachment.
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attachment = FPDFDoc_GetAttachment(document(), 1);
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ASSERT_TRUE(attachment);
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// Retrieve the second attachment file.
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len = FPDFAttachment_GetFile(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(5869u, FPDFAttachment_GetFile(attachment, buf.data(), len));
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// Check that the calculated checksum of the file data matches expectation.
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const char kCheckSum[] = "72afcddedf554dda63c0c88e06f1ce18";
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const wchar_t kCheckSumW[] = L"<72AFCDDEDF554DDA63C0C88E06F1CE18>";
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const std::string generated_checksum =
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GenerateMD5Base16(reinterpret_cast<uint8_t*>(buf.data()), len);
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EXPECT_EQ(kCheckSum, generated_checksum);
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// Check that the stored checksum matches expectation.
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len = FPDFAttachment_GetStringValue(attachment, kChecksumKey, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(70u, FPDFAttachment_GetStringValue(attachment, kChecksumKey,
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buf.data(), len));
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EXPECT_EQ(kCheckSumW,
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data())));
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}
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TEST_F(FPDFAttachmentEmbeddertest, AddAttachments) {
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// Open a file with two attachments.
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ASSERT_TRUE(OpenDocument("embedded_attachments.pdf"));
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EXPECT_EQ(2, FPDFDoc_GetAttachmentCount(document()));
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// Check that adding an attachment with an empty name would fail.
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EXPECT_FALSE(FPDFDoc_AddAttachment(document(), nullptr));
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// Add an attachment to the beginning of the embedded file list.
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std::unique_ptr<unsigned short, pdfium::FreeDeleter> file_name =
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GetFPDFWideString(L"0.txt");
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FPDF_ATTACHMENT attachment =
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FPDFDoc_AddAttachment(document(), file_name.get());
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// Check that writing to a file with nullptr but non-zero bytes would fail.
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EXPECT_FALSE(FPDFAttachment_SetFile(attachment, document(), nullptr, 10));
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// Set the new attachment's file.
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constexpr char kContents1[] = "Hello!";
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EXPECT_TRUE(FPDFAttachment_SetFile(attachment, document(), kContents1,
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strlen(kContents1)));
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// Verify the name of the new attachment (i.e. the first attachment).
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attachment = FPDFDoc_GetAttachment(document(), 0);
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ASSERT_TRUE(attachment);
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unsigned long len = FPDFAttachment_GetName(attachment, nullptr, 0);
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std::vector<char> buf(len);
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EXPECT_EQ(12u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"0.txt",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Verify the content of the new attachment (i.e. the first attachment).
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len = FPDFAttachment_GetFile(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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ASSERT_EQ(6u, FPDFAttachment_GetFile(attachment, buf.data(), len));
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EXPECT_EQ(std::string(kContents1), std::string(buf.data(), 6));
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// Add an attachment to the end of the embedded file list and set its file.
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file_name = GetFPDFWideString(L"z.txt");
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attachment = FPDFDoc_AddAttachment(document(), file_name.get());
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constexpr char kContents2[] = "World!";
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EXPECT_TRUE(FPDFAttachment_SetFile(attachment, document(), kContents2,
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strlen(kContents2)));
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EXPECT_EQ(4, FPDFDoc_GetAttachmentCount(document()));
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// Verify the name of the new attachment (i.e. the fourth attachment).
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attachment = FPDFDoc_GetAttachment(document(), 3);
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ASSERT_TRUE(attachment);
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len = FPDFAttachment_GetName(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(12u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"z.txt",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Verify the content of the new attachment (i.e. the fourth attachment).
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len = FPDFAttachment_GetFile(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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ASSERT_EQ(6u, FPDFAttachment_GetFile(attachment, buf.data(), len));
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EXPECT_EQ(std::string(kContents2), std::string(buf.data(), 6));
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}
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TEST_F(FPDFAttachmentEmbeddertest, AddAttachmentsWithParams) {
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// Open a file with two attachments.
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ASSERT_TRUE(OpenDocument("embedded_attachments.pdf"));
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EXPECT_EQ(2, FPDFDoc_GetAttachmentCount(document()));
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// Add an attachment to the embedded file list.
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std::unique_ptr<unsigned short, pdfium::FreeDeleter> file_name =
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GetFPDFWideString(L"5.txt");
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FPDF_ATTACHMENT attachment =
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FPDFDoc_AddAttachment(document(), file_name.get());
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constexpr char kContents[] = "Hello World!";
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EXPECT_TRUE(FPDFAttachment_SetFile(attachment, document(), kContents,
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strlen(kContents)));
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// Set the date to be an arbitrary value.
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constexpr wchar_t kDateW[] = L"D:20170720161527-04'00'";
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std::unique_ptr<unsigned short, pdfium::FreeDeleter> ws_date =
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GetFPDFWideString(kDateW);
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EXPECT_TRUE(
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FPDFAttachment_SetStringValue(attachment, kDateKey, ws_date.get()));
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// Set the checksum to be an arbitrary value.
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constexpr wchar_t kCheckSumW[] = L"<ABCDEF01234567899876543210FEDCBA>";
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std::unique_ptr<unsigned short, pdfium::FreeDeleter> ws_checksum =
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GetFPDFWideString(kCheckSumW);
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EXPECT_TRUE(FPDFAttachment_SetStringValue(attachment, kChecksumKey,
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ws_checksum.get()));
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// Verify the name of the new attachment (i.e. the second attachment).
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attachment = FPDFDoc_GetAttachment(document(), 1);
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ASSERT_TRUE(attachment);
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unsigned long len = FPDFAttachment_GetName(attachment, nullptr, 0);
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std::vector<char> buf(len);
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EXPECT_EQ(12u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"5.txt",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Verify the content of the new attachment.
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len = FPDFAttachment_GetFile(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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ASSERT_EQ(12u, FPDFAttachment_GetFile(attachment, buf.data(), len));
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EXPECT_EQ(std::string(kContents), std::string(buf.data(), 12));
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// Verify the creation date of the new attachment.
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len = FPDFAttachment_GetStringValue(attachment, kDateKey, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(48u, FPDFAttachment_GetStringValue(attachment, kDateKey, buf.data(),
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len));
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EXPECT_STREQ(kDateW,
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Verify the checksum of the new attachment.
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len = FPDFAttachment_GetStringValue(attachment, kChecksumKey, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(70u, FPDFAttachment_GetStringValue(attachment, kChecksumKey,
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buf.data(), len));
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EXPECT_STREQ(kCheckSumW,
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Overwrite the existing file with empty content, and check that the checksum
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// gets updated to the correct value.
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EXPECT_TRUE(FPDFAttachment_SetFile(attachment, document(), nullptr, 0));
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EXPECT_EQ(0u, FPDFAttachment_GetFile(attachment, nullptr, 0));
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len = FPDFAttachment_GetStringValue(attachment, kChecksumKey, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(70u, FPDFAttachment_GetStringValue(attachment, kChecksumKey,
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buf.data(), len));
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EXPECT_EQ(L"<D41D8CD98F00B204E9800998ECF8427E>",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data())));
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}
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TEST_F(FPDFAttachmentEmbeddertest, DeleteAttachment) {
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// Open a file with two attachments.
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ASSERT_TRUE(OpenDocument("embedded_attachments.pdf"));
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EXPECT_EQ(2, FPDFDoc_GetAttachmentCount(document()));
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// Verify the name of the first attachment.
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FPDF_ATTACHMENT attachment = FPDFDoc_GetAttachment(document(), 0);
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unsigned long len = FPDFAttachment_GetName(attachment, nullptr, 0);
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std::vector<char> buf(len);
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EXPECT_EQ(12u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"1.txt",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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// Delete the first attachment.
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EXPECT_TRUE(FPDFDoc_DeleteAttachment(document(), 0));
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EXPECT_EQ(1, FPDFDoc_GetAttachmentCount(document()));
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// Verify the name of the new first attachment.
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attachment = FPDFDoc_GetAttachment(document(), 0);
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len = FPDFAttachment_GetName(attachment, nullptr, 0);
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buf.clear();
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buf.resize(len);
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EXPECT_EQ(26u, FPDFAttachment_GetName(attachment, buf.data(), len));
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EXPECT_STREQ(L"attached.pdf",
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GetPlatformWString(reinterpret_cast<unsigned short*>(buf.data()))
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.c_str());
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}
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