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+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/escaping.h"
+
+#include <array>
+#include <cstdio>
+#include <cstring>
+#include <memory>
+#include <vector>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "absl/strings/str_cat.h"
+
+#include "absl/strings/internal/escaping_test_common.inc"
+
+namespace {
+
+struct epair {
+ std::string escaped;
+ std::string unescaped;
+};
+
+TEST(CEscape, EscapeAndUnescape) {
+ const std::string inputs[] = {
+ std::string("foo\nxx\r\b\0023"),
+ std::string(""),
+ std::string("abc"),
+ std::string("\1chad_rules"),
+ std::string("\1arnar_drools"),
+ std::string("xxxx\r\t'\"\\"),
+ std::string("\0xx\0", 4),
+ std::string("\x01\x31"),
+ std::string("abc\xb\x42\141bc"),
+ std::string("123\1\x31\x32\x33"),
+ std::string("\xc1\xca\x1b\x62\x19o\xcc\x04"),
+ std::string("\\\"\xe8\xb0\xb7\xe6\xad\x8c\\\" is Google\\\'s Chinese name"),
+ };
+ // Do this twice, once for octal escapes and once for hex escapes.
+ for (int kind = 0; kind < 4; kind++) {
+ for (const std::string& original : inputs) {
+ std::string escaped;
+ switch (kind) {
+ case 0:
+ escaped = absl::CEscape(original);
+ break;
+ case 1:
+ escaped = absl::CHexEscape(original);
+ break;
+ case 2:
+ escaped = absl::Utf8SafeCEscape(original);
+ break;
+ case 3:
+ escaped = absl::Utf8SafeCHexEscape(original);
+ break;
+ }
+ std::string unescaped_str;
+ EXPECT_TRUE(absl::CUnescape(escaped, &unescaped_str));
+ EXPECT_EQ(unescaped_str, original);
+
+ // Check in-place unescaping
+ std::string s = escaped;
+ EXPECT_TRUE(absl::CUnescape(s, &s));
+ ASSERT_EQ(s, original);
+ }
+ }
+ // Check that all possible two character strings can be escaped then
+ // unescaped successfully.
+ for (int char0 = 0; char0 < 256; char0++) {
+ for (int char1 = 0; char1 < 256; char1++) {
+ char chars[2];
+ chars[0] = char0;
+ chars[1] = char1;
+ std::string s(chars, 2);
+ std::string escaped = absl::CHexEscape(s);
+ std::string unescaped;
+ EXPECT_TRUE(absl::CUnescape(escaped, &unescaped));
+ EXPECT_EQ(s, unescaped);
+ }
+ }
+}
+
+TEST(CEscape, BasicEscaping) {
+ epair oct_values[] = {
+ {"foo\\rbar\\nbaz\\t", "foo\rbar\nbaz\t"},
+ {"\\'full of \\\"sound\\\" and \\\"fury\\\"\\'",
+ "'full of \"sound\" and \"fury\"'"},
+ {"signi\\\\fying\\\\ nothing\\\\", "signi\\fying\\ nothing\\"},
+ {"\\010\\t\\n\\013\\014\\r", "\010\011\012\013\014\015"}
+ };
+ epair hex_values[] = {
+ {"ubik\\rubik\\nubik\\t", "ubik\rubik\nubik\t"},
+ {"I\\\'ve just seen a \\\"face\\\"",
+ "I've just seen a \"face\""},
+ {"hel\\\\ter\\\\skel\\\\ter\\\\", "hel\\ter\\skel\\ter\\"},
+ {"\\x08\\t\\n\\x0b\\x0c\\r", "\010\011\012\013\014\015"}
+ };
+ epair utf8_oct_values[] = {
+ {"\xe8\xb0\xb7\xe6\xad\x8c\\r\xe8\xb0\xb7\xe6\xad\x8c\\nbaz\\t",
+ "\xe8\xb0\xb7\xe6\xad\x8c\r\xe8\xb0\xb7\xe6\xad\x8c\nbaz\t"},
+ {"\\\"\xe8\xb0\xb7\xe6\xad\x8c\\\" is Google\\\'s Chinese name",
+ "\"\xe8\xb0\xb7\xe6\xad\x8c\" is Google\'s Chinese name"},
+ {"\xe3\x83\xa1\xe3\x83\xbc\xe3\x83\xab\\\\are\\\\Japanese\\\\chars\\\\",
+ "\xe3\x83\xa1\xe3\x83\xbc\xe3\x83\xab\\are\\Japanese\\chars\\"},
+ {"\xed\x81\xac\xeb\xa1\xac\\010\\t\\n\\013\\014\\r",
+ "\xed\x81\xac\xeb\xa1\xac\010\011\012\013\014\015"}
+ };
+ epair utf8_hex_values[] = {
+ {"\x20\xe4\xbd\xa0\\t\xe5\xa5\xbd,\\r!\\n",
+ "\x20\xe4\xbd\xa0\t\xe5\xa5\xbd,\r!\n"},
+ {"\xe8\xa9\xa6\xe9\xa8\x93\\\' means \\\"test\\\"",
+ "\xe8\xa9\xa6\xe9\xa8\x93\' means \"test\""},
+ {"\\\\\xe6\x88\x91\\\\:\\\\\xe6\x9d\xa8\xe6\xac\xa2\\\\",
+ "\\\xe6\x88\x91\\:\\\xe6\x9d\xa8\xe6\xac\xa2\\"},
+ {"\xed\x81\xac\xeb\xa1\xac\\x08\\t\\n\\x0b\\x0c\\r",
+ "\xed\x81\xac\xeb\xa1\xac\010\011\012\013\014\015"}
+ };
+
+ for (const epair& val : oct_values) {
+ std::string escaped = absl::CEscape(val.unescaped);
+ EXPECT_EQ(escaped, val.escaped);
+ }
+ for (const epair& val : hex_values) {
+ std::string escaped = absl::CHexEscape(val.unescaped);
+ EXPECT_EQ(escaped, val.escaped);
+ }
+ for (const epair& val : utf8_oct_values) {
+ std::string escaped = absl::Utf8SafeCEscape(val.unescaped);
+ EXPECT_EQ(escaped, val.escaped);
+ }
+ for (const epair& val : utf8_hex_values) {
+ std::string escaped = absl::Utf8SafeCHexEscape(val.unescaped);
+ EXPECT_EQ(escaped, val.escaped);
+ }
+}
+
+TEST(Unescape, BasicFunction) {
+ epair tests[] =
+ {{"\\u0030", "0"},
+ {"\\u00A3", "\xC2\xA3"},
+ {"\\u22FD", "\xE2\x8B\xBD"},
+ {"\\U00010000", "\xF0\x90\x80\x80"},
+ {"\\U0010FFFD", "\xF4\x8F\xBF\xBD"}};
+ for (const epair& val : tests) {
+ std::string out;
+ EXPECT_TRUE(absl::CUnescape(val.escaped, &out));
+ EXPECT_EQ(out, val.unescaped);
+ }
+ std::string bad[] =
+ {"\\u1", // too short
+ "\\U1", // too short
+ "\\Uffffff", // exceeds 0x10ffff (largest Unicode)
+ "\\U00110000", // exceeds 0x10ffff (largest Unicode)
+ "\\uD835", // surrogate character (D800-DFFF)
+ "\\U0000DD04", // surrogate character (D800-DFFF)
+ "\\777", // exceeds 0xff
+ "\\xABCD"}; // exceeds 0xff
+ for (const std::string& e : bad) {
+ std::string error;
+ std::string out;
+ EXPECT_FALSE(absl::CUnescape(e, &out, &error));
+ EXPECT_FALSE(error.empty());
+ }
+}
+
+class CUnescapeTest : public testing::Test {
+ protected:
+ static const char kStringWithMultipleOctalNulls[];
+ static const char kStringWithMultipleHexNulls[];
+ static const char kStringWithMultipleUnicodeNulls[];
+
+ std::string result_string_;
+};
+
+const char CUnescapeTest::kStringWithMultipleOctalNulls[] =
+ "\\0\\n" // null escape \0 plus newline
+ "0\\n" // just a number 0 (not a null escape) plus newline
+ "\\00\\12" // null escape \00 plus octal newline code
+ "\\000"; // null escape \000
+
+// This has the same ingredients as kStringWithMultipleOctalNulls
+// but with \x hex escapes instead of octal escapes.
+const char CUnescapeTest::kStringWithMultipleHexNulls[] =
+ "\\x0\\n"
+ "0\\n"
+ "\\x00\\xa"
+ "\\x000";
+
+const char CUnescapeTest::kStringWithMultipleUnicodeNulls[] =
+ "\\u0000\\n" // short-form (4-digit) null escape plus newline
+ "0\\n" // just a number 0 (not a null escape) plus newline
+ "\\U00000000"; // long-form (8-digit) null escape
+
+TEST_F(CUnescapeTest, Unescapes1CharOctalNull) {
+ std::string original_string = "\\0";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes2CharOctalNull) {
+ std::string original_string = "\\00";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes3CharOctalNull) {
+ std::string original_string = "\\000";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes1CharHexNull) {
+ std::string original_string = "\\x0";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes2CharHexNull) {
+ std::string original_string = "\\x00";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes3CharHexNull) {
+ std::string original_string = "\\x000";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes4CharUnicodeNull) {
+ std::string original_string = "\\u0000";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, Unescapes8CharUnicodeNull) {
+ std::string original_string = "\\U00000000";
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0", 1), result_string_);
+}
+
+TEST_F(CUnescapeTest, UnescapesMultipleOctalNulls) {
+ std::string original_string(kStringWithMultipleOctalNulls);
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ // All escapes, including newlines and null escapes, should have been
+ // converted to the equivalent characters.
+ EXPECT_EQ(std::string("\0\n"
+ "0\n"
+ "\0\n"
+ "\0", 7), result_string_);
+}
+
+
+TEST_F(CUnescapeTest, UnescapesMultipleHexNulls) {
+ std::string original_string(kStringWithMultipleHexNulls);
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0\n"
+ "0\n"
+ "\0\n"
+ "\0", 7), result_string_);
+}
+
+TEST_F(CUnescapeTest, UnescapesMultipleUnicodeNulls) {
+ std::string original_string(kStringWithMultipleUnicodeNulls);
+ EXPECT_TRUE(absl::CUnescape(original_string, &result_string_));
+ EXPECT_EQ(std::string("\0\n"
+ "0\n"
+ "\0", 5), result_string_);
+}
+
+static struct {
+ absl::string_view plaintext;
+ absl::string_view cyphertext;
+} const base64_tests[] = {
+ // Empty std::string.
+ {{"", 0}, {"", 0}},
+ {{nullptr, 0},
+ {"", 0}}, // if length is zero, plaintext ptr must be ignored!
+
+ // Basic bit patterns;
+ // values obtained with "echo -n '...' | uuencode -m test"
+
+ {{"\000", 1}, "AA=="},
+ {{"\001", 1}, "AQ=="},
+ {{"\002", 1}, "Ag=="},
+ {{"\004", 1}, "BA=="},
+ {{"\010", 1}, "CA=="},
+ {{"\020", 1}, "EA=="},
+ {{"\040", 1}, "IA=="},
+ {{"\100", 1}, "QA=="},
+ {{"\200", 1}, "gA=="},
+
+ {{"\377", 1}, "/w=="},
+ {{"\376", 1}, "/g=="},
+ {{"\375", 1}, "/Q=="},
+ {{"\373", 1}, "+w=="},
+ {{"\367", 1}, "9w=="},
+ {{"\357", 1}, "7w=="},
+ {{"\337", 1}, "3w=="},
+ {{"\277", 1}, "vw=="},
+ {{"\177", 1}, "fw=="},
+ {{"\000\000", 2}, "AAA="},
+ {{"\000\001", 2}, "AAE="},
+ {{"\000\002", 2}, "AAI="},
+ {{"\000\004", 2}, "AAQ="},
+ {{"\000\010", 2}, "AAg="},
+ {{"\000\020", 2}, "ABA="},
+ {{"\000\040", 2}, "ACA="},
+ {{"\000\100", 2}, "AEA="},
+ {{"\000\200", 2}, "AIA="},
+ {{"\001\000", 2}, "AQA="},
+ {{"\002\000", 2}, "AgA="},
+ {{"\004\000", 2}, "BAA="},
+ {{"\010\000", 2}, "CAA="},
+ {{"\020\000", 2}, "EAA="},
+ {{"\040\000", 2}, "IAA="},
+ {{"\100\000", 2}, "QAA="},
+ {{"\200\000", 2}, "gAA="},
+
+ {{"\377\377", 2}, "//8="},
+ {{"\377\376", 2}, "//4="},
+ {{"\377\375", 2}, "//0="},
+ {{"\377\373", 2}, "//s="},
+ {{"\377\367", 2}, "//c="},
+ {{"\377\357", 2}, "/+8="},
+ {{"\377\337", 2}, "/98="},
+ {{"\377\277", 2}, "/78="},
+ {{"\377\177", 2}, "/38="},
+ {{"\376\377", 2}, "/v8="},
+ {{"\375\377", 2}, "/f8="},
+ {{"\373\377", 2}, "+/8="},
+ {{"\367\377", 2}, "9/8="},
+ {{"\357\377", 2}, "7/8="},
+ {{"\337\377", 2}, "3/8="},
+ {{"\277\377", 2}, "v/8="},
+ {{"\177\377", 2}, "f/8="},
+
+ {{"\000\000\000", 3}, "AAAA"},
+ {{"\000\000\001", 3}, "AAAB"},
+ {{"\000\000\002", 3}, "AAAC"},
+ {{"\000\000\004", 3}, "AAAE"},
+ {{"\000\000\010", 3}, "AAAI"},
+ {{"\000\000\020", 3}, "AAAQ"},
+ {{"\000\000\040", 3}, "AAAg"},
+ {{"\000\000\100", 3}, "AABA"},
+ {{"\000\000\200", 3}, "AACA"},
+ {{"\000\001\000", 3}, "AAEA"},
+ {{"\000\002\000", 3}, "AAIA"},
+ {{"\000\004\000", 3}, "AAQA"},
+ {{"\000\010\000", 3}, "AAgA"},
+ {{"\000\020\000", 3}, "ABAA"},
+ {{"\000\040\000", 3}, "ACAA"},
+ {{"\000\100\000", 3}, "AEAA"},
+ {{"\000\200\000", 3}, "AIAA"},
+ {{"\001\000\000", 3}, "AQAA"},
+ {{"\002\000\000", 3}, "AgAA"},
+ {{"\004\000\000", 3}, "BAAA"},
+ {{"\010\000\000", 3}, "CAAA"},
+ {{"\020\000\000", 3}, "EAAA"},
+ {{"\040\000\000", 3}, "IAAA"},
+ {{"\100\000\000", 3}, "QAAA"},
+ {{"\200\000\000", 3}, "gAAA"},
+
+ {{"\377\377\377", 3}, "////"},
+ {{"\377\377\376", 3}, "///+"},
+ {{"\377\377\375", 3}, "///9"},
+ {{"\377\377\373", 3}, "///7"},
+ {{"\377\377\367", 3}, "///3"},
+ {{"\377\377\357", 3}, "///v"},
+ {{"\377\377\337", 3}, "///f"},
+ {{"\377\377\277", 3}, "//+/"},
+ {{"\377\377\177", 3}, "//9/"},
+ {{"\377\376\377", 3}, "//7/"},
+ {{"\377\375\377", 3}, "//3/"},
+ {{"\377\373\377", 3}, "//v/"},
+ {{"\377\367\377", 3}, "//f/"},
+ {{"\377\357\377", 3}, "/+//"},
+ {{"\377\337\377", 3}, "/9//"},
+ {{"\377\277\377", 3}, "/7//"},
+ {{"\377\177\377", 3}, "/3//"},
+ {{"\376\377\377", 3}, "/v//"},
+ {{"\375\377\377", 3}, "/f//"},
+ {{"\373\377\377", 3}, "+///"},
+ {{"\367\377\377", 3}, "9///"},
+ {{"\357\377\377", 3}, "7///"},
+ {{"\337\377\377", 3}, "3///"},
+ {{"\277\377\377", 3}, "v///"},
+ {{"\177\377\377", 3}, "f///"},
+
+ // Random numbers: values obtained with
+ //
+ // #! /bin/bash
+ // dd bs=$1 count=1 if=/dev/random of=/tmp/bar.random
+ // od -N $1 -t o1 /tmp/bar.random
+ // uuencode -m test < /tmp/bar.random
+ //
+ // where $1 is the number of bytes (2, 3)
+
+ {{"\243\361", 2}, "o/E="},
+ {{"\024\167", 2}, "FHc="},
+ {{"\313\252", 2}, "y6o="},
+ {{"\046\041", 2}, "JiE="},
+ {{"\145\236", 2}, "ZZ4="},
+ {{"\254\325", 2}, "rNU="},
+ {{"\061\330", 2}, "Mdg="},
+ {{"\245\032", 2}, "pRo="},
+ {{"\006\000", 2}, "BgA="},
+ {{"\375\131", 2}, "/Vk="},
+ {{"\303\210", 2}, "w4g="},
+ {{"\040\037", 2}, "IB8="},
+ {{"\261\372", 2}, "sfo="},
+ {{"\335\014", 2}, "3Qw="},
+ {{"\233\217", 2}, "m48="},
+ {{"\373\056", 2}, "+y4="},
+ {{"\247\232", 2}, "p5o="},
+ {{"\107\053", 2}, "Rys="},
+ {{"\204\077", 2}, "hD8="},
+ {{"\276\211", 2}, "vok="},
+ {{"\313\110", 2}, "y0g="},
+ {{"\363\376", 2}, "8/4="},
+ {{"\251\234", 2}, "qZw="},
+ {{"\103\262", 2}, "Q7I="},
+ {{"\142\312", 2}, "Yso="},
+ {{"\067\211", 2}, "N4k="},
+ {{"\220\001", 2}, "kAE="},
+ {{"\152\240", 2}, "aqA="},
+ {{"\367\061", 2}, "9zE="},
+ {{"\133\255", 2}, "W60="},
+ {{"\176\035", 2}, "fh0="},
+ {{"\032\231", 2}, "Gpk="},
+
+ {{"\013\007\144", 3}, "Cwdk"},
+ {{"\030\112\106", 3}, "GEpG"},
+ {{"\047\325\046", 3}, "J9Um"},
+ {{"\310\160\022", 3}, "yHAS"},
+ {{"\131\100\237", 3}, "WUCf"},
+ {{"\064\342\134", 3}, "NOJc"},
+ {{"\010\177\004", 3}, "CH8E"},
+ {{"\345\147\205", 3}, "5WeF"},
+ {{"\300\343\360", 3}, "wOPw"},
+ {{"\061\240\201", 3}, "MaCB"},
+ {{"\225\333\044", 3}, "ldsk"},
+ {{"\215\137\352", 3}, "jV/q"},
+ {{"\371\147\160", 3}, "+Wdw"},
+ {{"\030\320\051", 3}, "GNAp"},
+ {{"\044\174\241", 3}, "JHyh"},
+ {{"\260\127\037", 3}, "sFcf"},
+ {{"\111\045\033", 3}, "SSUb"},
+ {{"\202\114\107", 3}, "gkxH"},
+ {{"\057\371\042", 3}, "L/ki"},
+ {{"\223\247\244", 3}, "k6ek"},
+ {{"\047\216\144", 3}, "J45k"},
+ {{"\203\070\327", 3}, "gzjX"},
+ {{"\247\140\072", 3}, "p2A6"},
+ {{"\124\115\116", 3}, "VE1O"},
+ {{"\157\162\050", 3}, "b3Io"},
+ {{"\357\223\004", 3}, "75ME"},
+ {{"\052\117\156", 3}, "Kk9u"},
+ {{"\347\154\000", 3}, "52wA"},
+ {{"\303\012\142", 3}, "wwpi"},
+ {{"\060\035\362", 3}, "MB3y"},
+ {{"\130\226\361", 3}, "WJbx"},
+ {{"\173\013\071", 3}, "ews5"},
+ {{"\336\004\027", 3}, "3gQX"},
+ {{"\357\366\234", 3}, "7/ac"},
+ {{"\353\304\111", 3}, "68RJ"},
+ {{"\024\264\131", 3}, "FLRZ"},
+ {{"\075\114\251", 3}, "PUyp"},
+ {{"\315\031\225", 3}, "zRmV"},
+ {{"\154\201\276", 3}, "bIG+"},
+ {{"\200\066\072", 3}, "gDY6"},
+ {{"\142\350\267", 3}, "Yui3"},
+ {{"\033\000\166", 3}, "GwB2"},
+ {{"\210\055\077", 3}, "iC0/"},
+ {{"\341\037\124", 3}, "4R9U"},
+ {{"\161\103\152", 3}, "cUNq"},
+ {{"\270\142\131", 3}, "uGJZ"},
+ {{"\337\076\074", 3}, "3z48"},
+ {{"\375\106\362", 3}, "/Uby"},
+ {{"\227\301\127", 3}, "l8FX"},
+ {{"\340\002\234", 3}, "4AKc"},
+ {{"\121\064\033", 3}, "UTQb"},
+ {{"\157\134\143", 3}, "b1xj"},
+ {{"\247\055\327", 3}, "py3X"},
+ {{"\340\142\005", 3}, "4GIF"},
+ {{"\060\260\143", 3}, "MLBj"},
+ {{"\075\203\170", 3}, "PYN4"},
+ {{"\143\160\016", 3}, "Y3AO"},
+ {{"\313\013\063", 3}, "ywsz"},
+ {{"\174\236\135", 3}, "fJ5d"},
+ {{"\103\047\026", 3}, "QycW"},
+ {{"\365\005\343", 3}, "9QXj"},
+ {{"\271\160\223", 3}, "uXCT"},
+ {{"\362\255\172", 3}, "8q16"},
+ {{"\113\012\015", 3}, "SwoN"},
+
+ // various lengths, generated by this python script:
+ //
+ // from std::string import lowercase as lc
+ // for i in range(27):
+ // print '{ %2d, "%s",%s "%s" },' % (i, lc[:i], ' ' * (26-i),
+ // lc[:i].encode('base64').strip())
+
+ {{"", 0}, {"", 0}},
+ {"a", "YQ=="},
+ {"ab", "YWI="},
+ {"abc", "YWJj"},
+ {"abcd", "YWJjZA=="},
+ {"abcde", "YWJjZGU="},
+ {"abcdef", "YWJjZGVm"},
+ {"abcdefg", "YWJjZGVmZw=="},
+ {"abcdefgh", "YWJjZGVmZ2g="},
+ {"abcdefghi", "YWJjZGVmZ2hp"},
+ {"abcdefghij", "YWJjZGVmZ2hpag=="},
+ {"abcdefghijk", "YWJjZGVmZ2hpams="},
+ {"abcdefghijkl", "YWJjZGVmZ2hpamts"},
+ {"abcdefghijklm", "YWJjZGVmZ2hpamtsbQ=="},
+ {"abcdefghijklmn", "YWJjZGVmZ2hpamtsbW4="},
+ {"abcdefghijklmno", "YWJjZGVmZ2hpamtsbW5v"},
+ {"abcdefghijklmnop", "YWJjZGVmZ2hpamtsbW5vcA=="},
+ {"abcdefghijklmnopq", "YWJjZGVmZ2hpamtsbW5vcHE="},
+ {"abcdefghijklmnopqr", "YWJjZGVmZ2hpamtsbW5vcHFy"},
+ {"abcdefghijklmnopqrs", "YWJjZGVmZ2hpamtsbW5vcHFycw=="},
+ {"abcdefghijklmnopqrst", "YWJjZGVmZ2hpamtsbW5vcHFyc3Q="},
+ {"abcdefghijklmnopqrstu", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1"},
+ {"abcdefghijklmnopqrstuv", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dg=="},
+ {"abcdefghijklmnopqrstuvw", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnc="},
+ {"abcdefghijklmnopqrstuvwx", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"},
+ {"abcdefghijklmnopqrstuvwxy", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eQ=="},
+ {"abcdefghijklmnopqrstuvwxyz", "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXo="},
+};
+
+TEST(Base64, EscapeAndUnescape) {
+ // Check the short strings; this tests the math (and boundaries)
+ for (const auto& tc : base64_tests) {
+ std::string encoded("this junk should be ignored");
+ absl::Base64Escape(tc.plaintext, &encoded);
+ EXPECT_EQ(encoded, tc.cyphertext);
+
+ std::string decoded("this junk should be ignored");
+ EXPECT_TRUE(absl::Base64Unescape(encoded, &decoded));
+ EXPECT_EQ(decoded, tc.plaintext);
+
+ std::string websafe(tc.cyphertext);
+ for (int c = 0; c < websafe.size(); ++c) {
+ if ('+' == websafe[c]) websafe[c] = '-';
+ if ('/' == websafe[c]) websafe[c] = '_';
+ if ('=' == websafe[c]) {
+ websafe.resize(c);
+ break;
+ }
+ }
+
+ encoded = "this junk should be ignored";
+ absl::WebSafeBase64Escape(tc.plaintext, &encoded);
+ EXPECT_EQ(encoded, websafe);
+
+ // Let's try the std::string version of the decoder
+ decoded = "this junk should be ignored";
+ EXPECT_TRUE(absl::WebSafeBase64Unescape(websafe, &decoded));
+ EXPECT_EQ(decoded, tc.plaintext);
+ }
+
+ // Now try the long strings, this tests the streaming
+ for (const auto& tc : base64_strings) {
+ std::string buffer;
+ absl::WebSafeBase64Escape(tc.plaintext, &buffer);
+ EXPECT_EQ(tc.cyphertext, buffer);
+ }
+
+ // Verify the behavior when decoding bad data
+ {
+ absl::string_view data_set[] = {"ab-/", absl::string_view("\0bcd", 4),
+ absl::string_view("abc.\0", 5)};
+ for (absl::string_view bad_data : data_set) {
+ std::string buf;
+ EXPECT_FALSE(absl::Base64Unescape(bad_data, &buf));
+ EXPECT_FALSE(absl::WebSafeBase64Unescape(bad_data, &buf));
+ EXPECT_TRUE(buf.empty());
+ }
+ }
+}
+
+TEST(Base64, DISABLED_HugeData) {
+ const size_t kSize = size_t(3) * 1000 * 1000 * 1000;
+ static_assert(kSize % 3 == 0, "kSize must be divisible by 3");
+ const std::string huge(kSize, 'x');
+
+ std::string escaped;
+ absl::Base64Escape(huge, &escaped);
+
+ // Generates the std::string that should match a base64 encoded "xxx..." std::string.
+ // "xxx" in base64 is "eHh4".
+ std::string expected_encoding;
+ expected_encoding.reserve(kSize / 3 * 4);
+ for (size_t i = 0; i < kSize / 3; ++i) {
+ expected_encoding.append("eHh4");
+ }
+ EXPECT_EQ(expected_encoding, escaped);
+
+ std::string unescaped;
+ EXPECT_TRUE(absl::Base64Unescape(escaped, &unescaped));
+ EXPECT_EQ(huge, unescaped);
+}
+
+TEST(HexAndBack, HexStringToBytes_and_BytesToHexString) {
+ std::string hex_mixed = "0123456789abcdefABCDEF";
+ std::string bytes_expected = "\x01\x23\x45\x67\x89\xab\xcd\xef\xAB\xCD\xEF";
+ std::string hex_only_lower = "0123456789abcdefabcdef";
+
+ std::string bytes_result = absl::HexStringToBytes(hex_mixed);
+ EXPECT_EQ(bytes_expected, bytes_result);
+
+ std::string prefix_valid = hex_mixed + "?";
+ std::string prefix_valid_result = absl::HexStringToBytes(
+ absl::string_view(prefix_valid.data(), prefix_valid.size() - 1));
+ EXPECT_EQ(bytes_expected, prefix_valid_result);
+
+ std::string infix_valid = "?" + hex_mixed + "???";
+ std::string infix_valid_result = absl::HexStringToBytes(
+ absl::string_view(infix_valid.data() + 1, hex_mixed.size()));
+ EXPECT_EQ(bytes_expected, infix_valid_result);
+
+ std::string hex_result = absl::BytesToHexString(bytes_expected);
+ EXPECT_EQ(hex_only_lower, hex_result);
+}
+
+} // namespace
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-14 13:37:59 +0000