 #include <config.h>

 #include <aptpkg/configuration.h>
 #include <aptpkg/md5.h>
 #include <aptpkg/sha1.h>
 #include <aptpkg/sha2.h>
 #include <aptpkg/strutl.h>
 #include <aptpkg/hashes.h>
 #include <aptpkg/fileutl.h>

 #include <iostream>
 #include <stdlib.h>
 #include <string>

 #include <gtest/gtest.h>

 #include "filehelpers.h"

 template <class T> void Test(const char *In,const char *Out)
 {
 T Sum;
 Sum.Add(In);
 equals(Sum.Result().Value(), Out);
 }



 TEST(HashSumsTest,SummationStrings)
 {
 #define EXPECT_SUM(Summation, In, Out) \
 { \
 Summation Sum; \
 Sum.Add(In); \
 EXPECT_EQ(Sum.Result().Value(), Out) << #Summation << " for '" << In << "'"; \
 }

 // From FIPS PUB 1801
 EXPECT_SUM(SHA1Summation, "","da39a3ee5e6b4b0d3255bfef95601890afd80709");
 EXPECT_SUM(SHA1Summation, "abc","a9993e364706816aba3e25717850c26c9cd0d89d");
 EXPECT_SUM(SHA1Summation, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
 "84983e441c3bd26ebaae4aa1f95129e5e54670f1");

 // MD5 tests from RFC 1321
 EXPECT_SUM(MD5Summation, "","d41d8cd98f00b204e9800998ecf8427e");
 EXPECT_SUM(MD5Summation, "a","0cc175b9c0f1b6a831c399e269772661");
 EXPECT_SUM(MD5Summation, "abc","900150983cd24fb0d6963f7d28e17f72");
 EXPECT_SUM(MD5Summation, "message digest","f96b697d7cb7938d525a2f31aaf161d0");
 EXPECT_SUM(MD5Summation, "abcdefghijklmnopqrstuvwxyz","c3fcd3d76192e4007dfb496cca67e13b");
 EXPECT_SUM(MD5Summation, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
 "d174ab98d277d9f5a5611c2c9f419d9f");
 EXPECT_SUM(MD5Summation, "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
 "57edf4a22be3c955ac49da2e2107b67a");

 // SHA256, From FIPS 1802
 EXPECT_SUM(SHA256Summation, "", "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855");
 EXPECT_SUM(SHA256Summation, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
 "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1");

 // SHA512
 EXPECT_SUM(SHA512Summation, "",
 "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce"
 "47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e");
 EXPECT_SUM(SHA512Summation, "abc",
 "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a"
 "2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f");


 EXPECT_SUM(MD5Summation, "The quick brown fox jumps over the lazy dog", "9e107d9d372bb6826bd81d3542a419d6");
 EXPECT_SUM(MD5Summation, "The quick brown fox jumps over the lazy dog.", "e4d909c290d0fb1ca068ffaddf22cbd0");
 EXPECT_SUM(SHA1Summation, "The quick brown fox jumps over the lazy dog", "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12");
 EXPECT_SUM(SHA1Summation, "The quick brown fox jumps over the lazy cog", "de9f2c7fd25e1b3afad3e85a0bd17d9b100db4b3");
 EXPECT_SUM(SHA256Summation, "The quick brown fox jumps over the lazy dog", "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592");
 EXPECT_SUM(SHA256Summation, "The quick brown fox jumps over the lazy dog.", "ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c");
 EXPECT_SUM(SHA512Summation, "The quick brown fox jumps over the lazy dog", "07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a309d785436bbb64"
 "2e93a252a954f23912547d1e8a3b5ed6e1bfd7097821233fa0538f3db854fee6");
 EXPECT_SUM(SHA512Summation, "The quick brown fox jumps over the lazy dog.", "91ea1245f20d46ae9a037a989f54f1f790f0a47607eeb8a14d12890cea77a1bb"
 "c6c7ed9cf205e67b7f2b8fd4c7dfd3a7a8617e45f3c463d481c7e586c39ac1ed");

 #undef EXPECT_SUM
 }
 TEST(HashSumsTest, Mill)
 {
 SHA1Summation Sum1;

 const unsigned char As[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
 size_t const AsCount = sizeof(As)/sizeof(As[0])  1;
 size_t Count = 1000000;
 while (Count != 0)
 {
 if (Count >= AsCount)
 {
 Sum1.Add(As, AsCount);
 Count = AsCount;
 }
 else
 {
 Sum1.Add(As,Count);
 Count = 0;
 }
 }

 EXPECT_EQ("34aa973cd4c4daa4f61eeb2bdbad27316534016f", Sum1.Result().Value());
 }

 static void getSummationString(char const * const type, std::string &sum)
 {
 /* to compare our result with an independent source we call the specific binaries
 and read their result back. We do this with a little trick by claiming that the
 summation is a compressor – and open the 'compressed' file later on directly to
 read out the summation sum calculated by it */
 APT::Configuration::Compressor compress(type, ".ext", type, NULL, NULL, 99);
 std::string name("apttest");
 name.append("hashsums").append(".XXXXXX");
 char * tempfile = strdup(name.c_str());
 int tempfile_fd = mkstemp(tempfile);
 close(tempfile_fd);
 ASSERT_NE(1, tempfile_fd);

 FileFd fd;
 ASSERT_TRUE(fd.Open(tempfile, FileFd::WriteOnly  FileFd::Empty, compress));
 ASSERT_TRUE(fd.IsOpen());
 FileFd input(__FILE__, FileFd::ReadOnly);
 ASSERT_TRUE(input.IsOpen());
 ASSERT_NE(0, input.FileSize());
 ASSERT_TRUE(CopyFile(input, fd));
 ASSERT_TRUE(input.IsOpen());
 ASSERT_TRUE(fd.IsOpen());
 ASSERT_FALSE(fd.Failed());
 input.Close();
 fd.Close();
 ASSERT_TRUE(fd.Open(tempfile, FileFd::ReadOnly, FileFd::None));
 ASSERT_TRUE(fd.IsOpen());
 ASSERT_NE(0, fd.FileSize());
 ASSERT_FALSE(fd.Failed());
 unlink(tempfile);
 free(tempfile);
 char readback[2000];
 unsigned long long actual;
 ASSERT_TRUE(fd.Read(readback, sizeof(readback)/sizeof(readback[0]), &actual));
 actual = 4;
 readback[actual] = '\0';
 sum = readback;
 }
 TEST(HashSumsTest, FileBased)
 {
 std::string summation;

 getSummationString("md5sum", summation);
 MD5SumValue md5(summation);
 EXPECT_EQ(md5.Value(), summation);

 getSummationString("sha1sum", summation);
 SHA1SumValue sha1(summation);
 EXPECT_EQ(sha1.Value(), summation);

 getSummationString("sha256sum", summation);
 SHA256SumValue sha256(summation);
 EXPECT_EQ(sha256.Value(), summation);

 getSummationString("sha512sum", summation);
 SHA512SumValue sha512(summation);
 EXPECT_EQ(sha512.Value(), summation);

 FileFd fd(__FILE__, FileFd::ReadOnly);
 EXPECT_TRUE(fd.IsOpen());
 std::string FileSize;
 strprintf(FileSize, "%llu", fd.FileSize());

 {
 Hashes hashes;
 hashes.AddFD(fd.Fd());
 HashStringList list = hashes.GetHashStringList();
 EXPECT_FALSE(list.empty());
 EXPECT_EQ(5, list.size());
 EXPECT_EQ(md5.Value(), list.find("MD5Sum")>HashValue());
 EXPECT_EQ(sha1.Value(), list.find("SHA1")>HashValue());
 EXPECT_EQ(sha256.Value(), list.find("SHA256")>HashValue());
 EXPECT_EQ(sha512.Value(), list.find("SHA512")>HashValue());
 EXPECT_EQ(FileSize, list.find("ChecksumFileSize")>HashValue());
 }
 unsigned long long sz = fd.FileSize();
 fd.Seek(0);
 {
 Hashes hashes;
 hashes.AddFD(fd.Fd(), sz);
 HashStringList list = hashes.GetHashStringList();
 EXPECT_FALSE(list.empty());
 EXPECT_EQ(5, list.size());
 EXPECT_EQ(md5.Value(), list.find("MD5Sum")>HashValue());
 EXPECT_EQ(sha1.Value(), list.find("SHA1")>HashValue());
 EXPECT_EQ(sha256.Value(), list.find("SHA256")>HashValue());
 EXPECT_EQ(sha512.Value(), list.find("SHA512")>HashValue());
 EXPECT_EQ(FileSize, list.find("ChecksumFileSize")>HashValue());
 }
 fd.Seek(0);
 {
 Hashes hashes(Hashes::MD5SUM  Hashes::SHA512SUM);
 hashes.AddFD(fd);
 HashStringList list = hashes.GetHashStringList();
 EXPECT_FALSE(list.empty());
 EXPECT_EQ(3, list.size());
 EXPECT_EQ(md5.Value(), list.find("MD5Sum")>HashValue());
 EXPECT_EQ(NULL, list.find("SHA1"));
 EXPECT_EQ(NULL, list.find("SHA256"));
 EXPECT_EQ(sha512.Value(), list.find("SHA512")>HashValue());
 EXPECT_EQ(FileSize, list.find("ChecksumFileSize")>HashValue());
 fd.Seek(0);
 Hashes hashes2(list);
 hashes2.AddFD(fd);
 list = hashes2.GetHashStringList();
 EXPECT_FALSE(list.empty());
 EXPECT_EQ(3, list.size());
 EXPECT_EQ(md5.Value(), list.find("MD5Sum")>HashValue());
 EXPECT_EQ(NULL, list.find("SHA1"));
 EXPECT_EQ(NULL, list.find("SHA256"));
 EXPECT_EQ(sha512.Value(), list.find("SHA512")>HashValue());
 EXPECT_EQ(FileSize, list.find("ChecksumFileSize")>HashValue());
 }
 fd.Seek(0);
 {
 MD5Summation MD5;
 MD5.AddFD(fd.Fd());
 EXPECT_EQ(md5.Value(), MD5.Result().Value());
 }
 fd.Seek(0);
 {
 SHA1Summation SHA1;
 SHA1.AddFD(fd.Fd());
 EXPECT_EQ(sha1.Value(), SHA1.Result().Value());
 }
 fd.Seek(0);
 {
 SHA256Summation SHA2;
 SHA2.AddFD(fd.Fd());
 EXPECT_EQ(sha256.Value(), SHA2.Result().Value());
 }
 fd.Seek(0);
 {
 SHA512Summation SHA2;
 SHA2.AddFD(fd.Fd());
 EXPECT_EQ(sha512.Value(), SHA2.Result().Value());
 }
 fd.Close();

 HashString sha2file("SHA512", sha512.Value());
 EXPECT_TRUE(sha2file.VerifyFile(__FILE__));
 HashString sha2wrong("SHA512", "00000000000");
 EXPECT_FALSE(sha2wrong.VerifyFile(__FILE__));
 EXPECT_EQ(sha2file, sha2file);
 EXPECT_TRUE(sha2file == sha2file);
 EXPECT_NE(sha2file, sha2wrong);
 EXPECT_TRUE(sha2file != sha2wrong);

 HashString sha2big("SHA256", sha256.Value());
 EXPECT_TRUE(sha2big.VerifyFile(__FILE__));
 HashString sha2small("sha256:" + sha256.Value());
 EXPECT_TRUE(sha2small.VerifyFile(__FILE__));
 EXPECT_EQ(sha2big, sha2small);
 EXPECT_TRUE(sha2big == sha2small);
 EXPECT_FALSE(sha2big != sha2small);

 HashStringList hashes;
 EXPECT_TRUE(hashes.empty());
 EXPECT_TRUE(hashes.push_back(sha2file));
 EXPECT_FALSE(hashes.empty());
 EXPECT_EQ(1, hashes.size());

 HashStringList wrong;
 EXPECT_TRUE(wrong.push_back(sha2wrong));
 EXPECT_NE(wrong, hashes);
 EXPECT_FALSE(wrong == hashes);
 EXPECT_TRUE(wrong != hashes);

 HashStringList similar;
 EXPECT_TRUE(similar.push_back(sha2big));
 EXPECT_NE(similar, hashes);
 EXPECT_FALSE(similar == hashes);
 EXPECT_TRUE(similar != hashes);

 EXPECT_TRUE(hashes.push_back(sha2big));
 EXPECT_EQ(2, hashes.size());
 EXPECT_TRUE(hashes.push_back(sha2small));
 EXPECT_EQ(2, hashes.size());
 EXPECT_FALSE(hashes.push_back(sha2wrong));
 EXPECT_EQ(2, hashes.size());
 EXPECT_TRUE(hashes.VerifyFile(__FILE__));

 EXPECT_EQ(similar, hashes);
 EXPECT_TRUE(similar == hashes);
 EXPECT_FALSE(similar != hashes);
 similar.clear();
 EXPECT_TRUE(similar.empty());
 EXPECT_EQ(0, similar.size());
 EXPECT_NE(similar, hashes);
 EXPECT_FALSE(similar == hashes);
 EXPECT_TRUE(similar != hashes);
 }
 TEST(HashSumsTest, HashStringList)
 {
 _config>Clear("Acquire::ForceHash");

 HashStringList list;
 EXPECT_TRUE(list.empty());
 EXPECT_FALSE(list.usable());
 EXPECT_EQ(0, list.size());
 EXPECT_EQ(NULL, list.find(NULL));
 EXPECT_EQ(NULL, list.find(""));
 EXPECT_EQ(NULL, list.find("MD5Sum"));
 EXPECT_EQ(0, list.FileSize());

 // empty lists aren't equal
 HashStringList list2;
 EXPECT_FALSE(list == list2);
 EXPECT_TRUE(list != list2);

 // some hashes don't really contribute to usability
 list.push_back(HashString("ChecksumFileSize", "29"));
 EXPECT_FALSE(list.empty());
 EXPECT_FALSE(list.usable());
 EXPECT_EQ(1, list.size());
 EXPECT_EQ(29, list.FileSize());

 Hashes hashes;
 hashes.Add("The quick brown fox jumps over the lazy dog");
 list = hashes.GetHashStringList();
 EXPECT_FALSE(list.empty());
 EXPECT_TRUE(list.usable());
 EXPECT_EQ(5, list.size());
 EXPECT_TRUE(NULL != list.find(NULL));
 EXPECT_TRUE(NULL != list.find(""));
 EXPECT_TRUE(NULL != list.find("MD5Sum"));
 EXPECT_TRUE(NULL != list.find("ChecksumFileSize"));
 EXPECT_TRUE(NULL == list.find("ROT26"));

 _config>Set("Acquire::ForceHash", "MD5Sum");
 EXPECT_FALSE(list.empty());
 EXPECT_TRUE(list.usable());
 EXPECT_EQ(5, list.size());
 EXPECT_TRUE(NULL != list.find(NULL));
 EXPECT_TRUE(NULL != list.find(""));
 EXPECT_TRUE(NULL != list.find("MD5Sum"));
 EXPECT_TRUE(NULL != list.find("ChecksumFileSize"));
 EXPECT_TRUE(NULL == list.find("ROT26"));

 _config>Set("Acquire::ForceHash", "ROT26");
 EXPECT_FALSE(list.empty());
 EXPECT_FALSE(list.usable());
 EXPECT_EQ(5, list.size());
 EXPECT_TRUE(NULL == list.find(NULL));
 EXPECT_TRUE(NULL == list.find(""));
 EXPECT_TRUE(NULL != list.find("MD5Sum"));
 EXPECT_TRUE(NULL != list.find("ChecksumFileSize"));
 EXPECT_TRUE(NULL == list.find("ROT26"));

 _config>Clear("Acquire::ForceHash");

 list2.push_back(*list.find("MD5Sum"));
 EXPECT_TRUE(list == list2);
 EXPECT_FALSE(list != list2);

 // introduce a mismatch to the list
 list2.push_back(HashString("SHA1", "cacecbd74968bc90ea3342767e6b94f46ddbcafc"));
 EXPECT_FALSE(list == list2);
 EXPECT_TRUE(list != list2);

 _config>Set("Acquire::ForceHash", "MD5Sum");
 EXPECT_TRUE(list == list2);
 EXPECT_FALSE(list != list2);

 _config>Clear("Acquire::ForceHash");
 }
