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