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node_url.cc
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#include "node_url.h"
#include "node_internals.h"
#include "base_object-inl.h"
#include "node_i18n.h"
#include <string>
#include <vector>
#include <stdio.h>
#include <cmath>
namespace node {
using v8::Array;
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::HandleScope;
using v8::Int32;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::Null;
using v8::Object;
using v8::String;
using v8::TryCatch;
using v8::Undefined;
using v8::Value;
inline Local<String> Utf8String(Isolate* isolate, const std::string& str) {
return String::NewFromUtf8(isolate,
str.data(),
v8::NewStringType::kNormal,
str.length()).ToLocalChecked();
}
namespace url {
namespace {
// https://url.spec.whatwg.org/#eof-code-point
const char kEOL = -1;
// Used in ToUSVString().
const char16_t kUnicodeReplacementCharacter = 0xFFFD;
// https://url.spec.whatwg.org/#concept-host
class URLHost {
public:
~URLHost();
void ParseIPv4Host(const char* input, size_t length, bool* is_ipv4);
void ParseIPv6Host(const char* input, size_t length);
void ParseOpaqueHost(const char* input, size_t length);
void ParseHost(const char* input,
size_t length,
bool is_special,
bool unicode = false);
inline bool ParsingFailed() const { return type_ == HostType::H_FAILED; }
std::string ToString() const;
// Like ToString(), but avoids a copy in exchange for invalidating `*this`.
std::string ToStringMove();
private:
enum class HostType {
H_FAILED,
H_DOMAIN,
H_IPV4,
H_IPV6,
H_OPAQUE,
};
union Value {
std::string domain_or_opaque;
uint32_t ipv4;
uint16_t ipv6[8];
~Value() {}
Value() : ipv4(0) {}
};
Value value_;
HostType type_ = HostType::H_FAILED;
inline void Reset() {
using string = std::string;
switch (type_) {
case HostType::H_DOMAIN:
case HostType::H_OPAQUE:
value_.domain_or_opaque.~string();
break;
default:
break;
}
type_ = HostType::H_FAILED;
}
// Setting the string members of the union with = is brittle because
// it relies on them being initialized to a state that requires no
// destruction of old data.
// For a long time, that worked well enough because ParseIPv6Host() happens
// to zero-fill `value_`, but that really is relying on standard library
// internals too much.
// These helpers are the easiest solution but we might want to consider
// just not forcing strings into an union.
inline void SetOpaque(std::string&& string) {
Reset();
type_ = HostType::H_OPAQUE;
new(&value_.domain_or_opaque) std::string(std::move(string));
}
inline void SetDomain(std::string&& string) {
Reset();
type_ = HostType::H_DOMAIN;
new(&value_.domain_or_opaque) std::string(std::move(string));
}
};
URLHost::~URLHost() {
Reset();
}
#define ARGS(XX) \
XX(ARG_FLAGS) \
XX(ARG_PROTOCOL) \
XX(ARG_USERNAME) \
XX(ARG_PASSWORD) \
XX(ARG_HOST) \
XX(ARG_PORT) \
XX(ARG_PATH) \
XX(ARG_QUERY) \
XX(ARG_FRAGMENT) \
XX(ARG_COUNT) // This one has to be last.
#define ERR_ARGS(XX) \
XX(ERR_ARG_FLAGS) \
XX(ERR_ARG_INPUT) \
enum url_cb_args {
#define XX(name) name,
ARGS(XX)
#undef XX
};
enum url_error_cb_args {
#define XX(name) name,
ERR_ARGS(XX)
#undef XX
};
#define CHAR_TEST(bits, name, expr) \
template <typename T> \
inline bool name(const T ch) { \
static_assert(sizeof(ch) >= (bits) / 8, \
"Character must be wider than " #bits " bits"); \
return (expr); \
}
#define TWO_CHAR_STRING_TEST(bits, name, expr) \
template <typename T> \
inline bool name(const T ch1, const T ch2) { \
static_assert(sizeof(ch1) >= (bits) / 8, \
"Character must be wider than " #bits " bits"); \
return (expr); \
} \
template <typename T> \
inline bool name(const std::basic_string<T>& str) { \
static_assert(sizeof(str[0]) >= (bits) / 8, \
"Character must be wider than " #bits " bits"); \
return str.length() >= 2 && name(str[0], str[1]); \
}
// https://infra.spec.whatwg.org/#ascii-tab-or-newline
CHAR_TEST(8, IsASCIITabOrNewline, (ch == '\t' || ch == '\n' || ch == '\r'))
// https://infra.spec.whatwg.org/#c0-control-or-space
CHAR_TEST(8, IsC0ControlOrSpace, (ch >= '\0' && ch <= ' '))
// https://infra.spec.whatwg.org/#ascii-digit
CHAR_TEST(8, IsASCIIDigit, (ch >= '0' && ch <= '9'))
// https://infra.spec.whatwg.org/#ascii-hex-digit
CHAR_TEST(8, IsASCIIHexDigit, (IsASCIIDigit(ch) ||
(ch >= 'A' && ch <= 'F') ||
(ch >= 'a' && ch <= 'f')))
// https://infra.spec.whatwg.org/#ascii-alpha
CHAR_TEST(8, IsASCIIAlpha, ((ch >= 'A' && ch <= 'Z') ||
(ch >= 'a' && ch <= 'z')))
// https://infra.spec.whatwg.org/#ascii-alphanumeric
CHAR_TEST(8, IsASCIIAlphanumeric, (IsASCIIDigit(ch) || IsASCIIAlpha(ch)))
// https://infra.spec.whatwg.org/#ascii-lowercase
template <typename T>
inline T ASCIILowercase(T ch) {
return IsASCIIAlpha(ch) ? (ch | 0x20) : ch;
}
// https://url.spec.whatwg.org/#forbidden-host-code-point
CHAR_TEST(8, IsForbiddenHostCodePoint,
ch == '\0' || ch == '\t' || ch == '\n' || ch == '\r' ||
ch == ' ' || ch == '#' || ch == '%' || ch == '/' ||
ch == ':' || ch == '?' || ch == '@' || ch == '[' ||
ch == '\\' || ch == ']')
// https://url.spec.whatwg.org/#windows-drive-letter
TWO_CHAR_STRING_TEST(8, IsWindowsDriveLetter,
(IsASCIIAlpha(ch1) && (ch2 == ':' || ch2 == '|')))
// https://url.spec.whatwg.org/#normalized-windows-drive-letter
TWO_CHAR_STRING_TEST(8, IsNormalizedWindowsDriveLetter,
(IsASCIIAlpha(ch1) && ch2 == ':'))
// If a UTF-16 character is a low/trailing surrogate.
CHAR_TEST(16, IsUnicodeTrail, (ch & 0xFC00) == 0xDC00)
// If a UTF-16 character is a surrogate.
CHAR_TEST(16, IsUnicodeSurrogate, (ch & 0xF800) == 0xD800)
// If a UTF-16 surrogate is a low/trailing one.
CHAR_TEST(16, IsUnicodeSurrogateTrail, (ch & 0x400) != 0)
#undef CHAR_TEST
#undef TWO_CHAR_STRING_TEST
const char* hex[256] = {
"%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07",
"%08", "%09", "%0A", "%0B", "%0C", "%0D", "%0E", "%0F",
"%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17",
"%18", "%19", "%1A", "%1B", "%1C", "%1D", "%1E", "%1F",
"%20", "%21", "%22", "%23", "%24", "%25", "%26", "%27",
"%28", "%29", "%2A", "%2B", "%2C", "%2D", "%2E", "%2F",
"%30", "%31", "%32", "%33", "%34", "%35", "%36", "%37",
"%38", "%39", "%3A", "%3B", "%3C", "%3D", "%3E", "%3F",
"%40", "%41", "%42", "%43", "%44", "%45", "%46", "%47",
"%48", "%49", "%4A", "%4B", "%4C", "%4D", "%4E", "%4F",
"%50", "%51", "%52", "%53", "%54", "%55", "%56", "%57",
"%58", "%59", "%5A", "%5B", "%5C", "%5D", "%5E", "%5F",
"%60", "%61", "%62", "%63", "%64", "%65", "%66", "%67",
"%68", "%69", "%6A", "%6B", "%6C", "%6D", "%6E", "%6F",
"%70", "%71", "%72", "%73", "%74", "%75", "%76", "%77",
"%78", "%79", "%7A", "%7B", "%7C", "%7D", "%7E", "%7F",
"%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87",
"%88", "%89", "%8A", "%8B", "%8C", "%8D", "%8E", "%8F",
"%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97",
"%98", "%99", "%9A", "%9B", "%9C", "%9D", "%9E", "%9F",
"%A0", "%A1", "%A2", "%A3", "%A4", "%A5", "%A6", "%A7",
"%A8", "%A9", "%AA", "%AB", "%AC", "%AD", "%AE", "%AF",
"%B0", "%B1", "%B2", "%B3", "%B4", "%B5", "%B6", "%B7",
"%B8", "%B9", "%BA", "%BB", "%BC", "%BD", "%BE", "%BF",
"%C0", "%C1", "%C2", "%C3", "%C4", "%C5", "%C6", "%C7",
"%C8", "%C9", "%CA", "%CB", "%CC", "%CD", "%CE", "%CF",
"%D0", "%D1", "%D2", "%D3", "%D4", "%D5", "%D6", "%D7",
"%D8", "%D9", "%DA", "%DB", "%DC", "%DD", "%DE", "%DF",
"%E0", "%E1", "%E2", "%E3", "%E4", "%E5", "%E6", "%E7",
"%E8", "%E9", "%EA", "%EB", "%EC", "%ED", "%EE", "%EF",
"%F0", "%F1", "%F2", "%F3", "%F4", "%F5", "%F6", "%F7",
"%F8", "%F9", "%FA", "%FB", "%FC", "%FD", "%FE", "%FF"
};
const uint8_t C0_CONTROL_ENCODE_SET[32] = {
// 00 01 02 03 04 05 06 07
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 08 09 0A 0B 0C 0D 0E 0F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 10 11 12 13 14 15 16 17
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 18 19 1A 1B 1C 1D 1E 1F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 20 21 22 23 24 25 26 27
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 28 29 2A 2B 2C 2D 2E 2F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 30 31 32 33 34 35 36 37
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 38 39 3A 3B 3C 3D 3E 3F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 40 41 42 43 44 45 46 47
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 48 49 4A 4B 4C 4D 4E 4F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 50 51 52 53 54 55 56 57
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 58 59 5A 5B 5C 5D 5E 5F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 60 61 62 63 64 65 66 67
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 68 69 6A 6B 6C 6D 6E 6F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 70 71 72 73 74 75 76 77
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 78 79 7A 7B 7C 7D 7E 7F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x80,
// 80 81 82 83 84 85 86 87
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 88 89 8A 8B 8C 8D 8E 8F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 90 91 92 93 94 95 96 97
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 98 99 9A 9B 9C 9D 9E 9F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A0 A1 A2 A3 A4 A5 A6 A7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A8 A9 AA AB AC AD AE AF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B0 B1 B2 B3 B4 B5 B6 B7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B8 B9 BA BB BC BD BE BF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C0 C1 C2 C3 C4 C5 C6 C7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C8 C9 CA CB CC CD CE CF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D0 D1 D2 D3 D4 D5 D6 D7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D8 D9 DA DB DC DD DE DF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E0 E1 E2 E3 E4 E5 E6 E7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E8 E9 EA EB EC ED EE EF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F0 F1 F2 F3 F4 F5 F6 F7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F8 F9 FA FB FC FD FE FF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80
};
const uint8_t FRAGMENT_ENCODE_SET[32] = {
// 00 01 02 03 04 05 06 07
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 08 09 0A 0B 0C 0D 0E 0F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 10 11 12 13 14 15 16 17
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 18 19 1A 1B 1C 1D 1E 1F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 20 21 22 23 24 25 26 27
0x01 | 0x00 | 0x04 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 28 29 2A 2B 2C 2D 2E 2F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 30 31 32 33 34 35 36 37
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 38 39 3A 3B 3C 3D 3E 3F
0x00 | 0x00 | 0x00 | 0x00 | 0x10 | 0x00 | 0x40 | 0x00,
// 40 41 42 43 44 45 46 47
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 48 49 4A 4B 4C 4D 4E 4F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 50 51 52 53 54 55 56 57
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 58 59 5A 5B 5C 5D 5E 5F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 60 61 62 63 64 65 66 67
0x01 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 68 69 6A 6B 6C 6D 6E 6F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 70 71 72 73 74 75 76 77
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 78 79 7A 7B 7C 7D 7E 7F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x80,
// 80 81 82 83 84 85 86 87
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 88 89 8A 8B 8C 8D 8E 8F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 90 91 92 93 94 95 96 97
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 98 99 9A 9B 9C 9D 9E 9F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A0 A1 A2 A3 A4 A5 A6 A7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A8 A9 AA AB AC AD AE AF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B0 B1 B2 B3 B4 B5 B6 B7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B8 B9 BA BB BC BD BE BF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C0 C1 C2 C3 C4 C5 C6 C7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C8 C9 CA CB CC CD CE CF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D0 D1 D2 D3 D4 D5 D6 D7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D8 D9 DA DB DC DD DE DF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E0 E1 E2 E3 E4 E5 E6 E7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E8 E9 EA EB EC ED EE EF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F0 F1 F2 F3 F4 F5 F6 F7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F8 F9 FA FB FC FD FE FF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80
};
const uint8_t PATH_ENCODE_SET[32] = {
// 00 01 02 03 04 05 06 07
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 08 09 0A 0B 0C 0D 0E 0F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 10 11 12 13 14 15 16 17
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 18 19 1A 1B 1C 1D 1E 1F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 20 21 22 23 24 25 26 27
0x01 | 0x00 | 0x04 | 0x08 | 0x00 | 0x00 | 0x00 | 0x00,
// 28 29 2A 2B 2C 2D 2E 2F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 30 31 32 33 34 35 36 37
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 38 39 3A 3B 3C 3D 3E 3F
0x00 | 0x00 | 0x00 | 0x00 | 0x10 | 0x00 | 0x40 | 0x80,
// 40 41 42 43 44 45 46 47
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 48 49 4A 4B 4C 4D 4E 4F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 50 51 52 53 54 55 56 57
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 58 59 5A 5B 5C 5D 5E 5F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 60 61 62 63 64 65 66 67
0x01 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 68 69 6A 6B 6C 6D 6E 6F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 70 71 72 73 74 75 76 77
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 78 79 7A 7B 7C 7D 7E 7F
0x00 | 0x00 | 0x00 | 0x08 | 0x00 | 0x20 | 0x00 | 0x80,
// 80 81 82 83 84 85 86 87
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 88 89 8A 8B 8C 8D 8E 8F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 90 91 92 93 94 95 96 97
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 98 99 9A 9B 9C 9D 9E 9F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A0 A1 A2 A3 A4 A5 A6 A7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A8 A9 AA AB AC AD AE AF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B0 B1 B2 B3 B4 B5 B6 B7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B8 B9 BA BB BC BD BE BF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C0 C1 C2 C3 C4 C5 C6 C7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C8 C9 CA CB CC CD CE CF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D0 D1 D2 D3 D4 D5 D6 D7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D8 D9 DA DB DC DD DE DF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E0 E1 E2 E3 E4 E5 E6 E7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E8 E9 EA EB EC ED EE EF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F0 F1 F2 F3 F4 F5 F6 F7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F8 F9 FA FB FC FD FE FF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80
};
const uint8_t USERINFO_ENCODE_SET[32] = {
// 00 01 02 03 04 05 06 07
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 08 09 0A 0B 0C 0D 0E 0F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 10 11 12 13 14 15 16 17
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 18 19 1A 1B 1C 1D 1E 1F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 20 21 22 23 24 25 26 27
0x01 | 0x00 | 0x04 | 0x08 | 0x00 | 0x00 | 0x00 | 0x00,
// 28 29 2A 2B 2C 2D 2E 2F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x80,
// 30 31 32 33 34 35 36 37
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 38 39 3A 3B 3C 3D 3E 3F
0x00 | 0x00 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 40 41 42 43 44 45 46 47
0x01 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 48 49 4A 4B 4C 4D 4E 4F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 50 51 52 53 54 55 56 57
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 58 59 5A 5B 5C 5D 5E 5F
0x00 | 0x00 | 0x00 | 0x08 | 0x10 | 0x20 | 0x40 | 0x00,
// 60 61 62 63 64 65 66 67
0x01 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 68 69 6A 6B 6C 6D 6E 6F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 70 71 72 73 74 75 76 77
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 78 79 7A 7B 7C 7D 7E 7F
0x00 | 0x00 | 0x00 | 0x08 | 0x10 | 0x20 | 0x00 | 0x80,
// 80 81 82 83 84 85 86 87
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 88 89 8A 8B 8C 8D 8E 8F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 90 91 92 93 94 95 96 97
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 98 99 9A 9B 9C 9D 9E 9F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A0 A1 A2 A3 A4 A5 A6 A7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A8 A9 AA AB AC AD AE AF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B0 B1 B2 B3 B4 B5 B6 B7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B8 B9 BA BB BC BD BE BF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C0 C1 C2 C3 C4 C5 C6 C7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C8 C9 CA CB CC CD CE CF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D0 D1 D2 D3 D4 D5 D6 D7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D8 D9 DA DB DC DD DE DF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E0 E1 E2 E3 E4 E5 E6 E7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E8 E9 EA EB EC ED EE EF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F0 F1 F2 F3 F4 F5 F6 F7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F8 F9 FA FB FC FD FE FF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80
};
const uint8_t QUERY_ENCODE_SET[32] = {
// 00 01 02 03 04 05 06 07
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 08 09 0A 0B 0C 0D 0E 0F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 10 11 12 13 14 15 16 17
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 18 19 1A 1B 1C 1D 1E 1F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 20 21 22 23 24 25 26 27
0x01 | 0x00 | 0x04 | 0x08 | 0x00 | 0x00 | 0x00 | 0x00,
// 28 29 2A 2B 2C 2D 2E 2F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 30 31 32 33 34 35 36 37
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 38 39 3A 3B 3C 3D 3E 3F
0x00 | 0x00 | 0x00 | 0x00 | 0x10 | 0x00 | 0x40 | 0x00,
// 40 41 42 43 44 45 46 47
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 48 49 4A 4B 4C 4D 4E 4F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 50 51 52 53 54 55 56 57
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 58 59 5A 5B 5C 5D 5E 5F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 60 61 62 63 64 65 66 67
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 68 69 6A 6B 6C 6D 6E 6F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 70 71 72 73 74 75 76 77
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00,
// 78 79 7A 7B 7C 7D 7E 7F
0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x80,
// 80 81 82 83 84 85 86 87
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 88 89 8A 8B 8C 8D 8E 8F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 90 91 92 93 94 95 96 97
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// 98 99 9A 9B 9C 9D 9E 9F
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A0 A1 A2 A3 A4 A5 A6 A7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// A8 A9 AA AB AC AD AE AF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B0 B1 B2 B3 B4 B5 B6 B7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// B8 B9 BA BB BC BD BE BF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C0 C1 C2 C3 C4 C5 C6 C7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// C8 C9 CA CB CC CD CE CF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D0 D1 D2 D3 D4 D5 D6 D7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// D8 D9 DA DB DC DD DE DF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E0 E1 E2 E3 E4 E5 E6 E7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// E8 E9 EA EB EC ED EE EF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F0 F1 F2 F3 F4 F5 F6 F7
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80,
// F8 F9 FA FB FC FD FE FF
0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40 | 0x80
};
inline bool BitAt(const uint8_t a[], const uint8_t i) {
return !!(a[i >> 3] & (1 << (i & 7)));
}
// Appends ch to str. If ch position in encode_set is set, the ch will
// be percent-encoded then appended.
inline void AppendOrEscape(std::string* str,
const unsigned char ch,
const uint8_t encode_set[]) {
if (BitAt(encode_set, ch))
*str += hex[ch];
else
*str += ch;
}
template <typename T>
inline unsigned hex2bin(const T ch) {
if (ch >= '0' && ch <= '9')
return ch - '0';
if (ch >= 'A' && ch <= 'F')
return 10 + (ch - 'A');
if (ch >= 'a' && ch <= 'f')
return 10 + (ch - 'a');
return static_cast<unsigned>(-1);
}
inline std::string PercentDecode(const char* input, size_t len) {
std::string dest;
if (len == 0)
return dest;
dest.reserve(len);
const char* pointer = input;
const char* end = input + len;
while (pointer < end) {
const char ch = pointer[0];
const size_t remaining = end - pointer - 1;
if (ch != '%' || remaining < 2 ||
(ch == '%' &&
(!IsASCIIHexDigit(pointer[1]) ||
!IsASCIIHexDigit(pointer[2])))) {
dest += ch;
pointer++;
continue;
} else {
unsigned a = hex2bin(pointer[1]);
unsigned b = hex2bin(pointer[2]);
char c = static_cast<char>(a * 16 + b);
dest += c;
pointer += 3;
}
}
return dest;
}
#define SPECIALS(XX) \
XX("ftp:", 21) \
XX("file:", -1) \
XX("gopher:", 70) \
XX("http:", 80) \
XX("https:", 443) \
XX("ws:", 80) \
XX("wss:", 443)
inline bool IsSpecial(const std::string& scheme) {
#define XX(name, _) if (scheme == name) return true;
SPECIALS(XX);
#undef XX
return false;
}
// https://url.spec.whatwg.org/#start-with-a-windows-drive-letter
inline bool StartsWithWindowsDriveLetter(const char* p, const char* end) {
const size_t length = end - p;
return length >= 2 &&
IsWindowsDriveLetter(p[0], p[1]) &&
(length == 2 ||
p[2] == '/' ||
p[2] == '\\' ||
p[2] == '?' ||
p[2] == '#');
}
inline int NormalizePort(const std::string& scheme, int p) {
#define XX(name, port) if (scheme == name && p == port) return -1;
SPECIALS(XX);
#undef XX
return p;
}
#if defined(NODE_HAVE_I18N_SUPPORT)
inline bool ToUnicode(const std::string& input, std::string* output) {
MaybeStackBuffer<char> buf;
if (i18n::ToUnicode(&buf, input.c_str(), input.length()) < 0)
return false;
output->assign(*buf, buf.length());
return true;
}
inline bool ToASCII(const std::string& input, std::string* output) {
MaybeStackBuffer<char> buf;
if (i18n::ToASCII(&buf, input.c_str(), input.length()) < 0)
return false;
output->assign(*buf, buf.length());
return true;
}
#else
// Intentional non-ops if ICU is not present.
inline bool ToUnicode(const std::string& input, std::string* output) {
*output = input;
return true;
}
inline bool ToASCII(const std::string& input, std::string* output) {
*output = input;
return true;
}
#endif
void URLHost::ParseIPv6Host(const char* input, size_t length) {
CHECK_EQ(type_, HostType::H_FAILED);
for (unsigned n = 0; n < 8; n++)
value_.ipv6[n] = 0;
uint16_t* piece_pointer = &value_.ipv6[0];
uint16_t* const buffer_end = piece_pointer + 8;
uint16_t* compress_pointer = nullptr;
const char* pointer = input;
const char* end = pointer + length;
unsigned value, len, swaps, numbers_seen;
char ch = pointer < end ? pointer[0] : kEOL;
if (ch == ':') {
if (length < 2 || pointer[1] != ':')
return;
pointer += 2;
ch = pointer < end ? pointer[0] : kEOL;
piece_pointer++;
compress_pointer = piece_pointer;
}
while (ch != kEOL) {
if (piece_pointer >= buffer_end)
return;
if (ch == ':') {
if (compress_pointer != nullptr)
return;
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
piece_pointer++;
compress_pointer = piece_pointer;
continue;
}
value = 0;
len = 0;
while (len < 4 && IsASCIIHexDigit(ch)) {
value = value * 0x10 + hex2bin(ch);
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
len++;
}
switch (ch) {
case '.':
if (len == 0)
return;
pointer -= len;
ch = pointer < end ? pointer[0] : kEOL;
if (piece_pointer > buffer_end - 2)
return;
numbers_seen = 0;
while (ch != kEOL) {
value = 0xffffffff;
if (numbers_seen > 0) {
if (ch == '.' && numbers_seen < 4) {
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
} else {
return;
}
}
if (!IsASCIIDigit(ch))
return;
while (IsASCIIDigit(ch)) {
unsigned number = ch - '0';
if (value == 0xffffffff) {
value = number;
} else if (value == 0) {
return;
} else {
value = value * 10 + number;
}
if (value > 255)
return;
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
}
*piece_pointer = *piece_pointer * 0x100 + value;
numbers_seen++;
if (numbers_seen == 2 || numbers_seen == 4)
piece_pointer++;
}
if (numbers_seen != 4)
return;
continue;
case ':':
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
if (ch == kEOL)
return;
break;
case kEOL:
break;
default:
return;
}
*piece_pointer = value;
piece_pointer++;
}
if (compress_pointer != nullptr) {
swaps = piece_pointer - compress_pointer;
piece_pointer = buffer_end - 1;
while (piece_pointer != &value_.ipv6[0] && swaps > 0) {
uint16_t temp = *piece_pointer;
uint16_t* swap_piece = compress_pointer + swaps - 1;
*piece_pointer = *swap_piece;
*swap_piece = temp;
piece_pointer--;
swaps--;
}
} else if (compress_pointer == nullptr &&
piece_pointer != buffer_end) {
return;
}
type_ = HostType::H_IPV6;
}
inline int64_t ParseNumber(const char* start, const char* end) {
unsigned R = 10;
if (end - start >= 2 && start[0] == '0' && (start[1] | 0x20) == 'x') {
start += 2;
R = 16;
}
if (end - start == 0) {
return 0;
} else if (R == 10 && end - start > 1 && start[0] == '0') {
start++;
R = 8;
}
const char* p = start;
while (p < end) {
const char ch = p[0];
switch (R) {
case 8:
if (ch < '0' || ch > '7')
return -1;
break;
case 10:
if (!IsASCIIDigit(ch))
return -1;
break;
case 16:
if (!IsASCIIHexDigit(ch))
return -1;
break;
}
p++;
}
return strtoll(start, nullptr, R);
}
void URLHost::ParseIPv4Host(const char* input, size_t length, bool* is_ipv4) {
CHECK_EQ(type_, HostType::H_FAILED);
*is_ipv4 = false;
const char* pointer = input;
const char* mark = input;
const char* end = pointer + length;
int parts = 0;
uint32_t val = 0;
uint64_t numbers[4];
int tooBigNumbers = 0;
if (length == 0)
return;
while (pointer <= end) {
const char ch = pointer < end ? pointer[0] : kEOL;
const int remaining = end - pointer - 1;
if (ch == '.' || ch == kEOL) {
if (++parts > 4)
return;
if (pointer == mark)
return;
int64_t n = ParseNumber(mark, pointer);
if (n < 0)
return;
if (n > 255) {
tooBigNumbers++;
}
numbers[parts - 1] = n;
mark = pointer + 1;
if (ch == '.' && remaining == 0)
break;
}
pointer++;
}
CHECK_GT(parts, 0);
*is_ipv4 = true;
// If any but the last item in numbers is greater than 255, return failure.
// If the last item in numbers is greater than or equal to
// 256^(5 - the number of items in numbers), return failure.
if (tooBigNumbers > 1 ||
(tooBigNumbers == 1 && numbers[parts - 1] <= 255) ||
numbers[parts - 1] >= pow(256, static_cast<double>(5 - parts))) {
return;
}
type_ = HostType::H_IPV4;
val = numbers[parts - 1];
for (int n = 0; n < parts - 1; n++) {
double b = 3 - n;
val += numbers[n] * pow(256, b);
}
value_.ipv4 = val;
}
void URLHost::ParseOpaqueHost(const char* input, size_t length) {
CHECK_EQ(type_, HostType::H_FAILED);
std::string output;
output.reserve(length);
for (size_t i = 0; i < length; i++) {
const char ch = input[i];
if (ch != '%' && IsForbiddenHostCodePoint(ch)) {
return;
} else {
AppendOrEscape(&output, ch, C0_CONTROL_ENCODE_SET);
}
}
SetOpaque(std::move(output));
}
void URLHost::ParseHost(const char* input,
size_t length,
bool is_special,
bool unicode) {
CHECK_EQ(type_, HostType::H_FAILED);
const char* pointer = input;
if (length == 0)
return;
if (pointer[0] == '[') {
if (pointer[length - 1] != ']')
return;
return ParseIPv6Host(++pointer, length - 2);
}
if (!is_special)
return ParseOpaqueHost(input, length);
// First, we have to percent decode
std::string decoded = PercentDecode(input, length);
// Then we have to punycode toASCII
if (!ToASCII(decoded, &decoded))
return;
// If any of the following characters are still present, we have to fail
for (size_t n = 0; n < decoded.size(); n++) {
const char ch = decoded[n];
if (IsForbiddenHostCodePoint(ch)) {
return;
}
}
// Check to see if it's an IPv4 IP address
bool is_ipv4;
ParseIPv4Host(decoded.c_str(), decoded.length(), &is_ipv4);
if (is_ipv4)
return;
// If the unicode flag is set, run the result through punycode ToUnicode
if (unicode && !ToUnicode(decoded, &decoded))
return;
// It's not an IPv4 or IPv6 address, it must be a domain
SetDomain(std::move(decoded));
}
// Locates the longest sequence of 0 segments in an IPv6 address
// in order to use the :: compression when serializing
template<typename T>
inline T* FindLongestZeroSequence(T* values, size_t len) {
T* start = values;
T* end = start + len;
T* result = nullptr;
T* current = nullptr;
unsigned counter = 0, longest = 1;
while (start < end) {