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// Copyright (c) 2012 The Chromium 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 <algorithm>
#include <string>
#include "net/base/escape.h"
#include "base/basictypes.h"
#include "base/i18n/icu_string_conversions.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace {
const size_t kNpos = string16::npos;
struct EscapeCase {
const char* input;
const char* output;
};
struct UnescapeURLCase {
const wchar_t* input;
UnescapeRule::Type rules;
const wchar_t* output;
};
struct UnescapeURLCaseASCII {
const char* input;
UnescapeRule::Type rules;
const char* output;
};
struct UnescapeAndDecodeCase {
const char* input;
// The expected output when run through UnescapeURL.
const char* url_unescaped;
// The expected output when run through UnescapeQuery.
const char* query_unescaped;
// The expected output when run through UnescapeAndDecodeURLComponent.
const wchar_t* decoded;
};
struct AdjustOffsetCase {
const char* input;
size_t input_offset;
size_t output_offset;
};
struct EscapeForHTMLCase {
const char* input;
const char* expected_output;
};
TEST(EscapeTest, EscapeTextForFormSubmission) {
const EscapeCase escape_cases[] = {
{"foo", "foo"},
{"foo bar", "foo+bar"},
{"foo++", "foo%2B%2B"}
};
for (size_t i = 0; i < arraysize(escape_cases); ++i) {
EscapeCase value = escape_cases[i];
EXPECT_EQ(value.output, EscapeQueryParamValue(value.input, true));
}
const EscapeCase escape_cases_no_plus[] = {
{"foo", "foo"},
{"foo bar", "foo%20bar"},
{"foo++", "foo%2B%2B"}
};
for (size_t i = 0; i < arraysize(escape_cases_no_plus); ++i) {
EscapeCase value = escape_cases_no_plus[i];
EXPECT_EQ(value.output, EscapeQueryParamValue(value.input, false));
}
// Test all the values in we're supposed to be escaping.
const std::string no_escape(
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789"
"!'()*-._~");
for (int i = 0; i < 256; ++i) {
std::string in;
in.push_back(i);
std::string out = EscapeQueryParamValue(in, true);
if (0 == i) {
EXPECT_EQ(out, std::string("%00"));
} else if (32 == i) {
// Spaces are plus escaped like web forms.
EXPECT_EQ(out, std::string("+"));
} else if (no_escape.find(in) == std::string::npos) {
// Check %hex escaping
std::string expected = base::StringPrintf("%%%02X", i);
EXPECT_EQ(expected, out);
} else {
// No change for things in the no_escape list.
EXPECT_EQ(out, in);
}
}
}
TEST(EscapeTest, EscapePath) {
ASSERT_EQ(
// Most of the character space we care about, un-escaped
EscapePath(
"\x02\n\x1d !\"#$%&'()*+,-./0123456789:;"
"<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"[\\]^_`abcdefghijklmnopqrstuvwxyz"
"{|}~\x7f\x80\xff"),
// Escaped
"%02%0A%1D%20!%22%23$%25&'()*+,-./0123456789%3A;"
"%3C=%3E%3F@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"%5B%5C%5D%5E_%60abcdefghijklmnopqrstuvwxyz"
"%7B%7C%7D~%7F%80%FF");
}
TEST(EscapeTest, EscapeUrlEncodedData) {
ASSERT_EQ(
// Most of the character space we care about, un-escaped
EscapeUrlEncodedData(
"\x02\n\x1d !\"#$%&'()*+,-./0123456789:;"
"<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"[\\]^_`abcdefghijklmnopqrstuvwxyz"
"{|}~\x7f\x80\xff", true),
// Escaped
"%02%0A%1D+!%22%23%24%25%26%27()*%2B,-./0123456789:%3B"
"%3C%3D%3E%3F%40ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"%5B%5C%5D%5E_%60abcdefghijklmnopqrstuvwxyz"
"%7B%7C%7D~%7F%80%FF");
}
TEST(EscapeTest, EscapeUrlEncodedDataSpace) {
ASSERT_EQ(EscapeUrlEncodedData("a b", true), "a+b");
ASSERT_EQ(EscapeUrlEncodedData("a b", false), "a%20b");
}
TEST(EscapeTest, UnescapeURLComponentASCII) {
const UnescapeURLCaseASCII unescape_cases[] = {
{"", UnescapeRule::NORMAL, ""},
{"%2", UnescapeRule::NORMAL, "%2"},
{"%%%%%%", UnescapeRule::NORMAL, "%%%%%%"},
{"Don't escape anything", UnescapeRule::NORMAL, "Don't escape anything"},
{"Invalid %escape %2", UnescapeRule::NORMAL, "Invalid %escape %2"},
{"Some%20random text %25%2dOK", UnescapeRule::NONE,
"Some%20random text %25%2dOK"},
{"Some%20random text %25%2dOK", UnescapeRule::NORMAL,
"Some%20random text %25-OK"},
{"Some%20random text %25%2dOK", UnescapeRule::SPACES,
"Some random text %25-OK"},
{"Some%20random text %25%2dOK", UnescapeRule::URL_SPECIAL_CHARS,
"Some%20random text %-OK"},
{"Some%20random text %25%2dOK",
UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS,
"Some random text %-OK"},
{"%A0%B1%C2%D3%E4%F5", UnescapeRule::NORMAL, "\xA0\xB1\xC2\xD3\xE4\xF5"},
{"%Aa%Bb%Cc%Dd%Ee%Ff", UnescapeRule::NORMAL, "\xAa\xBb\xCc\xDd\xEe\xFf"},
// Certain URL-sensitive characters should not be unescaped unless asked.
{"Hello%20%13%10world %23# %3F? %3D= %26& %25% %2B+", UnescapeRule::SPACES,
"Hello %13%10world %23# %3F? %3D= %26& %25% %2B+"},
{"Hello%20%13%10world %23# %3F? %3D= %26& %25% %2B+",
UnescapeRule::URL_SPECIAL_CHARS,
"Hello%20%13%10world ## ?? == && %% ++"},
// We can neither escape nor unescape '@' since some websites expect it to
// be preserved as either '@' or "%40".
// See http://b/996720 and http://crbug.com/23933 .
{"me@my%40example", UnescapeRule::NORMAL, "me@my%40example"},
// Control characters.
{"%01%02%03%04%05%06%07%08%09 %25", UnescapeRule::URL_SPECIAL_CHARS,
"%01%02%03%04%05%06%07%08%09 %"},
{"%01%02%03%04%05%06%07%08%09 %25", UnescapeRule::CONTROL_CHARS,
"\x01\x02\x03\x04\x05\x06\x07\x08\x09 %25"},
{"Hello%20%13%10%02", UnescapeRule::SPACES, "Hello %13%10%02"},
{"Hello%20%13%10%02", UnescapeRule::CONTROL_CHARS, "Hello%20\x13\x10\x02"},
};
for (size_t i = 0; i < arraysize(unescape_cases); i++) {
std::string str(unescape_cases[i].input);
EXPECT_EQ(std::string(unescape_cases[i].output),
UnescapeURLComponent(str, unescape_cases[i].rules));
}
// Test the NULL character unescaping (which wouldn't work above since those
// are just char pointers).
std::string input("Null");
input.push_back(0); // Also have a NULL in the input.
input.append("%00%39Test");
// When we're unescaping NULLs
std::string expected("Null");
expected.push_back(0);
expected.push_back(0);
expected.append("9Test");
EXPECT_EQ(expected, UnescapeURLComponent(input, UnescapeRule::CONTROL_CHARS));
// When we're not unescaping NULLs.
expected = "Null";
expected.push_back(0);
expected.append("%009Test");
EXPECT_EQ(expected, UnescapeURLComponent(input, UnescapeRule::NORMAL));
}
TEST(EscapeTest, UnescapeURLComponent) {
const UnescapeURLCase unescape_cases[] = {
{L"", UnescapeRule::NORMAL, L""},
{L"%2", UnescapeRule::NORMAL, L"%2"},
{L"%%%%%%", UnescapeRule::NORMAL, L"%%%%%%"},
{L"Don't escape anything", UnescapeRule::NORMAL, L"Don't escape anything"},
{L"Invalid %escape %2", UnescapeRule::NORMAL, L"Invalid %escape %2"},
{L"Some%20random text %25%2dOK", UnescapeRule::NONE,
L"Some%20random text %25%2dOK"},
{L"Some%20random text %25%2dOK", UnescapeRule::NORMAL,
L"Some%20random text %25-OK"},
{L"Some%20random text %25%2dOK", UnescapeRule::SPACES,
L"Some random text %25-OK"},
{L"Some%20random text %25%2dOK", UnescapeRule::URL_SPECIAL_CHARS,
L"Some%20random text %-OK"},
{L"Some%20random text %25%2dOK",
UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS,
L"Some random text %-OK"},
{L"%A0%B1%C2%D3%E4%F5", UnescapeRule::NORMAL, L"\xA0\xB1\xC2\xD3\xE4\xF5"},
{L"%Aa%Bb%Cc%Dd%Ee%Ff", UnescapeRule::NORMAL, L"\xAa\xBb\xCc\xDd\xEe\xFf"},
// Certain URL-sensitive characters should not be unescaped unless asked.
{L"Hello%20%13%10world %23# %3F? %3D= %26& %25% %2B+", UnescapeRule::SPACES,
L"Hello %13%10world %23# %3F? %3D= %26& %25% %2B+"},
{L"Hello%20%13%10world %23# %3F? %3D= %26& %25% %2B+",
UnescapeRule::URL_SPECIAL_CHARS,
L"Hello%20%13%10world ## ?? == && %% ++"},
// We can neither escape nor unescape '@' since some websites expect it to
// be preserved as either '@' or "%40".
// See http://b/996720 and http://crbug.com/23933 .
{L"me@my%40example", UnescapeRule::NORMAL, L"me@my%40example"},
// Control characters.
{L"%01%02%03%04%05%06%07%08%09 %25", UnescapeRule::URL_SPECIAL_CHARS,
L"%01%02%03%04%05%06%07%08%09 %"},
{L"%01%02%03%04%05%06%07%08%09 %25", UnescapeRule::CONTROL_CHARS,
L"\x01\x02\x03\x04\x05\x06\x07\x08\x09 %25"},
{L"Hello%20%13%10%02", UnescapeRule::SPACES, L"Hello %13%10%02"},
{L"Hello%20%13%10%02", UnescapeRule::CONTROL_CHARS,
L"Hello%20\x13\x10\x02"},
{L"Hello\x9824\x9827", UnescapeRule::CONTROL_CHARS,
L"Hello\x9824\x9827"},
};
for (size_t i = 0; i < arraysize(unescape_cases); i++) {
string16 str(WideToUTF16(unescape_cases[i].input));
EXPECT_EQ(WideToUTF16(unescape_cases[i].output),
UnescapeURLComponent(str, unescape_cases[i].rules));
}
// Test the NULL character unescaping (which wouldn't work above since those
// are just char pointers).
string16 input(WideToUTF16(L"Null"));
input.push_back(0); // Also have a NULL in the input.
input.append(WideToUTF16(L"%00%39Test"));
// When we're unescaping NULLs
string16 expected(WideToUTF16(L"Null"));
expected.push_back(0);
expected.push_back(0);
expected.append(ASCIIToUTF16("9Test"));
EXPECT_EQ(expected, UnescapeURLComponent(input, UnescapeRule::CONTROL_CHARS));
// When we're not unescaping NULLs.
expected = WideToUTF16(L"Null");
expected.push_back(0);
expected.append(WideToUTF16(L"%009Test"));
EXPECT_EQ(expected, UnescapeURLComponent(input, UnescapeRule::NORMAL));
}
TEST(EscapeTest, UnescapeAndDecodeUTF8URLComponent) {
const UnescapeAndDecodeCase unescape_cases[] = {
{ "%",
"%",
"%",
L"%"},
{ "+",
"+",
" ",
L"+"},
{ "%2+",
"%2+",
"%2 ",
L"%2+"},
{ "+%%%+%%%",
"+%%%+%%%",
" %%% %%%",
L"+%%%+%%%"},
{ "Don't escape anything",
"Don't escape anything",
"Don't escape anything",
L"Don't escape anything"},
{ "+Invalid %escape %2+",
"+Invalid %escape %2+",
" Invalid %escape %2 ",
L"+Invalid %escape %2+"},
{ "Some random text %25%2dOK",
"Some random text %25-OK",
"Some random text %25-OK",
L"Some random text %25-OK"},
{ "%01%02%03%04%05%06%07%08%09",
"%01%02%03%04%05%06%07%08%09",
"%01%02%03%04%05%06%07%08%09",
L"%01%02%03%04%05%06%07%08%09"},
{ "%E4%BD%A0+%E5%A5%BD",
"\xE4\xBD\xA0+\xE5\xA5\xBD",
"\xE4\xBD\xA0 \xE5\xA5\xBD",
L"\x4f60+\x597d"},
{ "%ED%ED", // Invalid UTF-8.
"\xED\xED",
"\xED\xED",
L"%ED%ED"}, // Invalid UTF-8 -> kept unescaped.
};
for (size_t i = 0; i < arraysize(unescape_cases); i++) {
std::string unescaped = UnescapeURLComponent(unescape_cases[i].input,
UnescapeRule::NORMAL);
EXPECT_EQ(std::string(unescape_cases[i].url_unescaped), unescaped);
unescaped = UnescapeURLComponent(unescape_cases[i].input,
UnescapeRule::REPLACE_PLUS_WITH_SPACE);
EXPECT_EQ(std::string(unescape_cases[i].query_unescaped), unescaped);
// TODO: Need to test unescape_spaces and unescape_percent.
string16 decoded = UnescapeAndDecodeUTF8URLComponent(
unescape_cases[i].input, UnescapeRule::NORMAL, NULL);
EXPECT_EQ(WideToUTF16(unescape_cases[i].decoded), decoded);
}
}
TEST(EscapeTest, AdjustOffset) {
const AdjustOffsetCase adjust_cases[] = {
{"", 0, std::string::npos},
{"test", 0, 0},
{"test", 2, 2},
{"test", 4, std::string::npos},
{"test", std::string::npos, std::string::npos},
{"%2dtest", 6, 4},
{"%2dtest", 2, std::string::npos},
{"test%2d", 2, 2},
{"%E4%BD%A0+%E5%A5%BD", 9, 1},
{"%E4%BD%A0+%E5%A5%BD", 6, std::string::npos},
{"%ED%B0%80+%E5%A5%BD", 6, 6},
};
for (size_t i = 0; i < arraysize(adjust_cases); i++) {
size_t offset = adjust_cases[i].input_offset;
UnescapeAndDecodeUTF8URLComponent(adjust_cases[i].input,
UnescapeRule::NORMAL, &offset);
EXPECT_EQ(adjust_cases[i].output_offset, offset);
}
}
TEST(EscapeTest, EscapeForHTML) {
const EscapeForHTMLCase tests[] = {
{ "hello", "hello" },
{ "<hello>", "&lt;hello&gt;" },
{ "don\'t mess with me", "don&#39;t mess with me" },
};
for (size_t i = 0; i < arraysize(tests); ++i) {
std::string result = EscapeForHTML(std::string(tests[i].input));
EXPECT_EQ(std::string(tests[i].expected_output), result);
}
}
TEST(EscapeTest, UnescapeForHTML) {
const EscapeForHTMLCase tests[] = {
{ "", "" },
{ "&lt;hello&gt;", "<hello>" },
{ "don&#39;t mess with me", "don\'t mess with me" },
{ "&lt;&gt;&amp;&quot;&#39;", "<>&\"'" },
{ "& lt; &amp ; &; '", "& lt; &amp ; &; '" },
{ "&amp;", "&" },
{ "&quot;", "\"" },
{ "&#39;", "'" },
{ "&lt;", "<" },
{ "&gt;", ">" },
{ "&amp; &", "& &" },
};
for (size_t i = 0; i < arraysize(tests); ++i) {
string16 result = UnescapeForHTML(ASCIIToUTF16(tests[i].input));
EXPECT_EQ(ASCIIToUTF16(tests[i].expected_output), result);
}
}
TEST(EscapeTest, AdjustEncodingOffset) {
// Imagine we have strings as shown in the following cases where the
// %XX's represent encoded characters
// 1: abc%ECdef ==> abcXdef
std::vector<size_t> offsets;
for (size_t t = 0; t < 9; ++t)
offsets.push_back(t);
internal::AdjustEncodingOffset::Adjustments adjustments;
adjustments.push_back(3);
std::for_each(offsets.begin(), offsets.end(),
internal::AdjustEncodingOffset(adjustments));
size_t expected_1[] = {0, 1, 2, 3, kNpos, kNpos, 4, 5, 6};
EXPECT_EQ(offsets.size(), arraysize(expected_1));
for (size_t i = 0; i < arraysize(expected_1); ++i)
EXPECT_EQ(expected_1[i], offsets[i]);
// 2: %ECabc%EC%ECdef%EC ==> XabcXXdefX
offsets.clear();
for (size_t t = 0; t < 18; ++t)
offsets.push_back(t);
adjustments.clear();
adjustments.push_back(0);
adjustments.push_back(6);
adjustments.push_back(9);
adjustments.push_back(15);
std::for_each(offsets.begin(), offsets.end(),
internal::AdjustEncodingOffset(adjustments));
size_t expected_2[] = {0, kNpos, kNpos, 1, 2, 3, 4, kNpos, kNpos, 5, kNpos,
kNpos, 6, 7, 8, 9, kNpos, kNpos};
EXPECT_EQ(offsets.size(), arraysize(expected_2));
for (size_t i = 0; i < arraysize(expected_2); ++i)
EXPECT_EQ(expected_2[i], offsets[i]);
}
} // namespace
} // namespace net