// Copyright 2015 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 "core/fpdftext/cpdf_linkextract.h" #include "testing/gtest/include/gtest/gtest.h" // Class to help test functions in CPDF_LinkExtract class. class CPDF_TestLinkExtract final : public CPDF_LinkExtract { public: CPDF_TestLinkExtract() : CPDF_LinkExtract(nullptr) {} private: // Add test cases as friends to access protected member functions. // Access CheckMailLink and CheckWebLink. FRIEND_TEST(CPDF_LinkExtractTest, CheckMailLink); FRIEND_TEST(CPDF_LinkExtractTest, CheckWebLink); }; TEST(CPDF_LinkExtractTest, CheckMailLink) { CPDF_TestLinkExtract extractor; // Check cases that fail to extract valid mail link. const wchar_t* const invalid_strs[] = { L"", L"peter.pan", // '@' is required. L"abc@server", // Domain name needs at least one '.'. L"abc.@gmail.com", // '.' can not immediately precede '@'. L"abc@xyz&q.org", // Domain name should not contain '&'. L"abc@.xyz.org", // Domain name should not start with '.'. L"fan@g..com" // Domain name should not have consecutive '.' }; for (size_t i = 0; i < FX_ArraySize(invalid_strs); ++i) { const wchar_t* const input = invalid_strs[i]; WideString text_str(input); EXPECT_FALSE(extractor.CheckMailLink(&text_str)) << input; } // Check cases that can extract valid mail link. // An array of {input_string, expected_extracted_email_address}. const wchar_t* const valid_strs[][2] = { {L"peter@abc.d", L"peter@abc.d"}, {L"red.teddy.b@abc.com", L"red.teddy.b@abc.com"}, {L"abc_@gmail.com", L"abc_@gmail.com"}, // '_' is ok before '@'. {L"dummy-hi@gmail.com", L"dummy-hi@gmail.com"}, // '-' is ok in user name. {L"a..df@gmail.com", L"df@gmail.com"}, // Stop at consecutive '.'. {L".john@yahoo.com", L"john@yahoo.com"}, // Remove heading '.'. {L"abc@xyz.org?/", L"abc@xyz.org"}, // Trim ending invalid chars. {L"fan{abc@xyz.org", L"abc@xyz.org"}, // Trim beginning invalid chars. {L"fan@g.com..", L"fan@g.com"}, // Trim the ending periods. {L"CAP.cap@Gmail.Com", L"CAP.cap@Gmail.Com"}, // Keep the original case. }; for (size_t i = 0; i < FX_ArraySize(valid_strs); ++i) { const wchar_t* const input = valid_strs[i][0]; WideString text_str(input); WideString expected_str(L"mailto:"); expected_str += valid_strs[i][1]; EXPECT_TRUE(extractor.CheckMailLink(&text_str)) << input; EXPECT_STREQ(expected_str.c_str(), text_str.c_str()); } } TEST(CPDF_LinkExtractTest, CheckWebLink) { CPDF_TestLinkExtract extractor; // Check cases that fail to extract valid web link. // The last few are legit web addresses that we don't handle now. const wchar_t* const invalid_cases[] = { L"", L"http", L"www.", L"https-and-www", L"http:/abc.com", // Missing slash. L"http://((()),", // Only invalid chars in host name. L"ftp://example.com", // Ftp scheme is not supported. L"http:example.com", // Missing slashes. L"http//[example.com", // Invalid IPv6 address. L"http//[00:00:00:00:00:00", // Invalid IPv6 address. L"http//[]", // Empty IPv6 address. // Web addresses that in correct format that we don't handle. L"abc.example.com", // URL without scheme. }; const int32_t DEFAULT_VALUE = -42; for (size_t i = 0; i < FX_ArraySize(invalid_cases); ++i) { const wchar_t* const input = invalid_cases[i]; WideString text_str(input); int32_t start_offset = DEFAULT_VALUE; int32_t count = DEFAULT_VALUE; EXPECT_FALSE(extractor.CheckWebLink(&text_str, &start_offset, &count)) << input; EXPECT_EQ(DEFAULT_VALUE, start_offset) << input; EXPECT_EQ(DEFAULT_VALUE, count) << input; } // Check cases that can extract valid web link. // An array of {input_string, expected_extracted_web_link}. struct ValidCase { const wchar_t* const input_string; const wchar_t* const url_extracted; const int32_t start_offset; const int32_t count; }; const ValidCase valid_cases[] = { {L"http://www.example.com", L"http://www.example.com", 0, 22}, // standard URL. {L"http://www.example.com:88", L"http://www.example.com:88", 0, 25}, // URL with port number. {L"http://test@www.example.com", L"http://test@www.example.com", 0, 27}, // URL with username. {L"http://test:test@example.com", L"http://test:test@example.com", 0, 28}, // URL with username and password. {L"http://example", L"http://example", 0, 14}, // URL with short domain name. {L"http////www.server", L"http://www.server", 8, 10}, // URL starts with "www.". {L"http:/www.abc.com", L"http://www.abc.com", 6, 11}, // URL starts with "www.". {L"www.a.b.c", L"http://www.a.b.c", 0, 9}, // URL starts with "www.". {L"https://a.us", L"https://a.us", 0, 12}, // Secure http URL. {L"https://www.t.us", L"https://www.t.us", 0, 16}, // Secure http URL. {L"www.example-test.com", L"http://www.example-test.com", 0, 20}, // '-' in host is ok. {L"www.example.com,", L"http://www.example.com", 0, 15}, // Trim ending invalid chars. {L"www.example.com;(", L"http://www.example.com", 0, 15}, // Trim ending invalid chars. {L"test:www.abc.com", L"http://www.abc.com", 5, 11}, // Trim chars before URL. {L"(http://www.abc.com)", L"http://www.abc.com", 1, 18}, // Trim external brackets. {L"0(http://www.abc.com)0", L"http://www.abc.com", 2, 18}, // Trim chars outside brackets as well. {L"0(www.abc.com)0", L"http://www.abc.com", 2, 11}, // Links without http should also have brackets trimmed. {L"http://www.abc.com)0", L"http://www.abc.com)0", 0, 20}, // Do not trim brackets that were not opened. {L"{()}", L"http://www.abc.com", 3, 18}, // Trim chars with multiple levels of brackets. {L"[http://www.abc.com/z(1)]", L"http://www.abc.com/z(1)", 1, 23}, // Brackets opened inside the URL should not be trimmed. {L"(http://www.abc.com/z(1))", L"http://www.abc.com/z(1)", 1, 23}, // Brackets opened inside the URL should not be trimmed. {L"\"http://www.abc.com\"", L"http://www.abc.com", 1, 18}, // External quotes can also be escaped {L"www.g.com..", L"http://www.g.com..", 0, 11}, // Leave ending periods. // Web links can contain IP addresses too. {L"http://192.168.0.1", L"http://192.168.0.1", 0, 18}, // IPv4 address. {L"http://192.168.0.1:80", L"http://192.168.0.1:80", 0, 21}, // IPv4 address with port. {L"http://[aa::00:bb::00:cc:00]", L"http://[aa::00:bb::00:cc:00]", 0, 28}, // IPv6 reference. {L"http://[aa::00:bb::00:cc:00]:12", L"http://[aa::00:bb::00:cc:00]:12", 0, 31}, // IPv6 reference with port. {L"http://[aa]:12", L"http://[aa]:12", 0, 14}, // Not validate IP address. {L"http://[aa]:12abc", L"http://[aa]:12", 0, 14}, // Trim for IPv6 address. {L"http://[aa]:", L"http://[aa]", 0, 11}, // Trim for IPv6 address. // Path and query parts can be anything. {L"www.abc.com/#%%^&&*(", L"http://www.abc.com/#%%^&&*(", 0, 20}, {L"www.a.com/#a=@?q=rr&r=y", L"http://www.a.com/#a=@?q=rr&r=y", 0, 23}, {L"http://a.com/1/2/3/4\5\6", L"http://a.com/1/2/3/4\5\6", 0, 22}, {L"http://www.example.com/foo;bar", L"http://www.example.com/foo;bar", 0, 30}, // Invalid chars inside host name are ok as we don't validate them. {L"http://ex[am]ple", L"http://ex[am]ple", 0, 16}, {L"http://:example.com", L"http://:example.com", 0, 19}, {L"http://((())/path?", L"http://((())/path?", 0, 18}, {L"http:////abc.server", L"http:////abc.server", 0, 19}, // Non-ASCII chars are not validated either. {L"www.测试.net", L"http://www.测试.net", 0, 10}, {L"www.测试。net。", L"http://www.测试。net。", 0, 11}, {L"www.测试.net；", L"http://www.测试.net；", 0, 11}, }; for (size_t i = 0; i < FX_ArraySize(valid_cases); ++i) { const wchar_t* const input = valid_cases[i].input_string; WideString text_str(input); int32_t start_offset = DEFAULT_VALUE; int32_t count = DEFAULT_VALUE; EXPECT_TRUE(extractor.CheckWebLink(&text_str, &start_offset, &count)) << input; EXPECT_STREQ(valid_cases[i].url_extracted, text_str.c_str()); EXPECT_EQ(valid_cases[i].start_offset, start_offset) << input; EXPECT_EQ(valid_cases[i].count, count) << input; } }