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#include "node_url.h"
#include "node.h"
#include "node_internals.h"
#include "env.h"
#include "env-inl.h"
#include "util.h"
#include "util-inl.h"
#include "v8.h"
#include "base-object.h"
#include "base-object-inl.h"
#include "node_i18n.h"
#include <string>
#include <vector>
#include <stdio.h>
#include <cmath>
#if defined(NODE_HAVE_I18N_SUPPORT)
#include <unicode/utf8.h>
#include <unicode/utf.h>
#endif
namespace node {
using v8::Array;
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::HandleScope;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Null;
using v8::Object;
using v8::String;
using v8::Undefined;
using v8::Value;
#define GET(env, obj, name) \
obj->Get(env->context(), \
OneByteString(env->isolate(), name)).ToLocalChecked()
#define GET_AND_SET(env, obj, name, data, flag) \
{ \
Local<Value> val = GET(env, obj, #name); \
if (val->IsString()) { \
Utf8Value value(env->isolate(), val.As<String>()); \
data->name = *value; \
data->flags |= flag; \
} \
}
#define CANNOT_BE_BASE() url.flags |= URL_FLAGS_CANNOT_BE_BASE;
#define INVALID_PARSE_STATE() url.flags |= URL_FLAGS_INVALID_PARSE_STATE;
#define SPECIAL() \
{ \
url.flags |= URL_FLAGS_SPECIAL; \
special = true; \
}
#define TERMINATE() \
{ \
url.flags |= URL_FLAGS_TERMINATED; \
goto done; \
}
#define FAILED() \
{ \
url.flags |= URL_FLAGS_FAILED; \
goto done; \
}
#define CHECK_FLAG(flags, name) (flags & URL_FLAGS_##name) /* NOLINT */
#define IS_CANNOT_BE_BASE(flags) CHECK_FLAG(flags, CANNOT_BE_BASE)
#define IS_FAILED(flags) CHECK_FLAG(flags, FAILED)
#define DOES_HAVE_SCHEME(url) CHECK_FLAG(url.flags, HAS_SCHEME)
#define DOES_HAVE_USERNAME(url) CHECK_FLAG(url.flags, HAS_USERNAME)
#define DOES_HAVE_PASSWORD(url) CHECK_FLAG(url.flags, HAS_PASSWORD)
#define DOES_HAVE_HOST(url) CHECK_FLAG(url.flags, HAS_HOST)
#define DOES_HAVE_PATH(url) CHECK_FLAG(url.flags, HAS_PATH)
#define DOES_HAVE_QUERY(url) CHECK_FLAG(url.flags, HAS_QUERY)
#define DOES_HAVE_FRAGMENT(url) CHECK_FLAG(url.flags, HAS_FRAGMENT)
#define SET_HAVE_SCHEME() url.flags |= URL_FLAGS_HAS_SCHEME;
#define SET_HAVE_USERNAME() url.flags |= URL_FLAGS_HAS_USERNAME;
#define SET_HAVE_PASSWORD() url.flags |= URL_FLAGS_HAS_PASSWORD;
#define SET_HAVE_HOST() url.flags |= URL_FLAGS_HAS_HOST;
#define SET_HAVE_PATH() url.flags |= URL_FLAGS_HAS_PATH;
#define SET_HAVE_QUERY() url.flags |= URL_FLAGS_HAS_QUERY;
#define SET_HAVE_FRAGMENT() url.flags |= URL_FLAGS_HAS_FRAGMENT;
#define UTF8STRING(isolate, str) \
String::NewFromUtf8(isolate, str.c_str(), v8::NewStringType::kNormal) \
.ToLocalChecked()
namespace url {
#if defined(NODE_HAVE_I18N_SUPPORT)
static int ToUnicode(std::string* input, std::string* output) {
MaybeStackBuffer<char> buf;
if (i18n::ToUnicode(&buf, input->c_str(), input->length()) < 0)
return -1;
output->assign(*buf, buf.length());
return 0;
}
static int ToASCII(std::string* input, std::string* output) {
MaybeStackBuffer<char> buf;
if (i18n::ToASCII(&buf, input->c_str(), input->length()) < 0)
return -1;
output->assign(*buf, buf.length());
return 0;
}
// Unfortunately there's not really a better way to do this.
// Iterate through each encoded codepoint and verify that
// it is a valid unicode codepoint.
static int IsValidUTF8(std::string* input) {
const char* p = input->c_str();
int32_t len = input->length();
for (int32_t i = 0; i < len;) {
UChar32 c;
U8_NEXT_UNSAFE(p, i, c);
if (!U_IS_UNICODE_CHAR(c))
return -1;
}
return 0;
}
#else
// Intentional non-ops if ICU is not present.
static int ToUnicode(std::string* input, std::string* output) {
output->reserve(input->length());
*output = input->c_str();
}
static int ToASCII(std::string* input, std::string* output) {
output->reserve(input->length());
*output = input->c_str();
}
static int IsValidUTF8(std::string* input) {
return 0;
}
#endif
static url_host_type ParseIPv6Host(url_host* host,
const char* input,
size_t length) {
url_host_type type = HOST_TYPE_FAILED;
for (unsigned n = 0; n < 8; n++)
host->value.ipv6[n] = 0;
uint16_t* piece_pointer = &host->value.ipv6[0];
uint16_t* last_piece = piece_pointer + 8;
uint16_t* compress_pointer = nullptr;
const char* pointer = input;
const char* end = pointer + length;
unsigned value, len, swaps, dots;
char ch = pointer < end ? pointer[0] : kEOL;
if (ch == ':') {
if (length < 2 || pointer[1] != ':')
goto end;
pointer += 2;
ch = pointer < end ? pointer[0] : kEOL;
piece_pointer++;
compress_pointer = piece_pointer;
}
while (ch != kEOL) {
if (piece_pointer > last_piece)
goto end;
if (ch == ':') {
if (compress_pointer != nullptr)
goto end;
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
piece_pointer++;
compress_pointer = piece_pointer;
continue;
}
value = 0;
len = 0;
while (len < 4 && ASCII_HEX_DIGIT(ch)) {
value = value * 0x10 + hex2bin(ch);
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
len++;
}
switch (ch) {
case '.':
if (len == 0)
goto end;
pointer -= len;
ch = pointer < end ? pointer[0] : kEOL;
if (piece_pointer > last_piece - 2)
goto end;
dots = 0;
while (ch != kEOL) {
value = 0xffffffff;
if (!ASCII_DIGIT(ch))
goto end;
while (ASCII_DIGIT(ch)) {
unsigned number = ch - '0';
if (value == 0xffffffff) {
value = number;
} else if (value == 0) {
goto end;
} else {
value = value * 10 + number;
}
if (value > 255)
goto end;
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
}
if (dots < 3 && ch != '.')
goto end;
*piece_pointer = *piece_pointer * 0x100 + value;
if (dots & 0x1)
piece_pointer++;
if (ch != kEOL) {
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
}
if (dots == 3 && ch != kEOL)
goto end;
dots++;
}
continue;
case ':':
pointer++;
ch = pointer < end ? pointer[0] : kEOL;
if (ch == kEOL)
goto end;
break;
case kEOL:
break;
default:
goto end;
}
*piece_pointer = value;
piece_pointer++;
}
if (compress_pointer != nullptr) {
swaps = piece_pointer - compress_pointer;
piece_pointer = last_piece - 1;
while (piece_pointer != &host->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 != last_piece) {
goto end;
}
type = HOST_TYPE_IPV6;
end:
host->type = type;
return type;
}
static inline int 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 (!ASCII_DIGIT(ch))
return -1;
break;
case 16:
if (!ASCII_HEX_DIGIT(ch))
return -1;
break;
}
p++;
}
return strtol(start, NULL, R);
}
static url_host_type ParseIPv4Host(url_host* host,
const char* input,
size_t length) {
url_host_type type = HOST_TYPE_DOMAIN;
const char* pointer = input;
const char* mark = input;
const char* end = pointer + length;
int parts = 0;
uint32_t val = 0;
unsigned numbers[4];
if (length == 0)
goto end;
while (pointer <= end) {
const char ch = pointer < end ? pointer[0] : kEOL;
const int remaining = end - pointer - 1;
if (ch == '.' || ch == kEOL) {
if (++parts > 4 || pointer - mark == 0)
break;
int n = ParseNumber(mark, pointer);
if (n < 0) {
type = HOST_TYPE_DOMAIN;
goto end;
}
if (pointer - mark == 10) {
numbers[parts - 1] = n;
break;
}
if (n > 255) {
type = HOST_TYPE_FAILED;
goto end;
}
numbers[parts - 1] = n;
mark = pointer + 1;
if (ch == '.' && remaining == 0)
break;
}
pointer++;
}
type = HOST_TYPE_IPV4;
if (parts > 0) {
val = numbers[parts - 1];
for (int n = 0; n < parts - 1; n++) {
double b = 3-n;
val += numbers[n] * pow(256, b);
}
}
host->value.ipv4 = val;
end:
host->type = type;
return type;
}
static url_host_type ParseHost(url_host* host,
const char* input,
size_t length,
bool unicode = false) {
url_host_type type = HOST_TYPE_FAILED;
const char* pointer = input;
std::string decoded;
if (length == 0)
goto end;
if (pointer[0] == '[') {
if (pointer[length - 1] != ']')
goto end;
return ParseIPv6Host(host, ++pointer, length - 2);
}
// First, we have to percent decode
if (PercentDecode(input, length, &decoded) < 0)
goto end;
// If there are any invalid UTF8 byte sequences, we have to fail.
// Unfortunately this means iterating through the string and checking
// each decoded codepoint.
if (IsValidUTF8(&decoded) < 0)
goto end;
// Then we have to punycode toASCII
if (ToASCII(&decoded, &decoded) < 0)
goto end;
// 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 (ch == 0x00 || ch == 0x09 || ch == 0x0a || ch == 0x0d ||
ch == 0x20 || ch == '#' || ch == '%' || ch == '/' ||
ch == '?' || ch == '@' || ch == '[' || ch == '\\' ||
ch == ']') {
goto end;
}
}
// Check to see if it's an IPv4 IP address
type = ParseIPv4Host(host, decoded.c_str(), decoded.length());
if (type == HOST_TYPE_IPV4 || type == HOST_TYPE_FAILED)
goto end;
// If the unicode flag is set, run the result through punycode ToUnicode
if (unicode && ToUnicode(&decoded, &decoded) < 0)
goto end;
// It's not an IPv4 or IPv6 address, it must be a domain
type = HOST_TYPE_DOMAIN;
host->value.domain = decoded;
end:
host->type = type;
return type;
}
// Locates the longest sequence of 0 segments in an IPv6 address
// in order to use the :: compression when serializing
static inline uint16_t* FindLongestZeroSequence(uint16_t* values,
size_t len) {
uint16_t* start = values;
uint16_t* end = start + len;
uint16_t* result = nullptr;
uint16_t* current = nullptr;
unsigned counter = 0, longest = 1;
while (start < end) {
if (*start == 0) {
if (current == nullptr)
current = start;
counter++;
} else {
if (counter > longest) {
longest = counter;
result = current;
}
counter = 0;
current = nullptr;
}
start++;
}
if (counter > longest)
result = current;
return result;
}
static url_host_type WriteHost(url_host* host, std::string* dest) {
dest->clear();
switch (host->type) {
case HOST_TYPE_DOMAIN:
*dest = host->value.domain;
break;
case HOST_TYPE_IPV4: {
dest->reserve(15);
uint32_t value = host->value.ipv4;
for (int n = 0; n < 4; n++) {
char buf[4];
char* buffer = buf;
snprintf(buffer, sizeof(buf), "%d", value % 256);
dest->insert(0, buf);
if (n < 3)
dest->insert(0, 1, '.');
value /= 256;
}
break;
}
case HOST_TYPE_IPV6: {
dest->reserve(41);
*dest+= '[';
uint16_t* start = &host->value.ipv6[0];
uint16_t* compress_pointer =
FindLongestZeroSequence(start, 8);
for (int n = 0; n <= 7; n++) {
uint16_t* piece = &host->value.ipv6[n];
if (compress_pointer == piece) {
*dest += n == 0 ? "::" : ":";
while (*piece == 0 && n < 8) {
n++;
piece = &host->value.ipv6[n];
}
if (n == 8)
break;
}
char buf[5];
char* buffer = buf;
snprintf(buffer, sizeof(buf), "%x", *piece);
*dest += buf;
if (n < 7)
*dest += ':';
}
*dest += ']';
break;
}
case HOST_TYPE_FAILED:
break;
}
return host->type;
}
static int ParseHost(std::string* input,
std::string* output,
bool unicode = false) {
if (input->length() == 0)
return 0;
url_host host{{""}, HOST_TYPE_DOMAIN};
ParseHost(&host, input->c_str(), input->length(), unicode);
if (host.type == HOST_TYPE_FAILED)
return -1;
WriteHost(&host, output);
return 0;
}
static inline void Copy(Isolate* isolate,
Local<Array> ary,
std::vector<std::string>* vec) {
const int32_t len = ary->Length();
if (len == 0)
return; // nothing to copy
vec->reserve(len);
for (int32_t n = 0; n < len; n++) {
Local<Value> val = ary->Get(n);
if (val->IsString()) {
Utf8Value value(isolate, val.As<String>());
vec->push_back(std::string(*value, value.length()));
}
}
}
static inline Local<Array> Copy(Isolate* isolate,
std::vector<std::string> vec) {
Local<Array> ary = Array::New(isolate, vec.size());
for (size_t n = 0; n < vec.size(); n++)
ary->Set(n, UTF8STRING(isolate, vec[n]));
return ary;
}
static inline void HarvestBase(Environment* env,
struct url_data* base,
Local<Object> base_obj) {
Local<Value> flags = GET(env, base_obj, "flags");
if (flags->IsInt32())
base->flags = flags->Int32Value();
GET_AND_SET(env, base_obj, scheme, base, URL_FLAGS_HAS_SCHEME);
GET_AND_SET(env, base_obj, username, base, URL_FLAGS_HAS_USERNAME);
GET_AND_SET(env, base_obj, password, base, URL_FLAGS_HAS_PASSWORD);
GET_AND_SET(env, base_obj, host, base, URL_FLAGS_HAS_HOST);
GET_AND_SET(env, base_obj, query, base, URL_FLAGS_HAS_QUERY);
GET_AND_SET(env, base_obj, fragment, base, URL_FLAGS_HAS_FRAGMENT);
Local<Value> port = GET(env, base_obj, "port");
if (port->IsInt32())
base->port = port->Int32Value();
Local<Value> path = GET(env, base_obj, "path");
if (path->IsArray()) {
base->flags |= URL_FLAGS_HAS_PATH;
Copy(env->isolate(), path.As<Array>(), &(base->path));
}
}
static inline void HarvestContext(Environment* env,
struct url_data* context,
Local<Object> context_obj) {
Local<Value> flags = GET(env, context_obj, "flags");
if (flags->IsInt32()) {
int32_t _flags = flags->Int32Value();
if (_flags & URL_FLAGS_SPECIAL)
context->flags |= URL_FLAGS_SPECIAL;
if (_flags & URL_FLAGS_CANNOT_BE_BASE)
context->flags |= URL_FLAGS_CANNOT_BE_BASE;
}
Local<Value> scheme = GET(env, context_obj, "scheme");
if (scheme->IsString()) {
Utf8Value value(env->isolate(), scheme);
context->scheme.assign(*value, value.length());
}
Local<Value> port = GET(env, context_obj, "port");
if (port->IsInt32())
context->port = port->Int32Value();
}
// Single dot segment can be ".", "%2e", or "%2E"
static inline bool IsSingleDotSegment(std::string str) {
switch (str.size()) {
case 1:
return str == ".";
case 3:
return str[0] == '%' &&
str[1] == '2' &&
TO_LOWER(str[2]) == 'e';
default:
return false;
}
}
// Double dot segment can be:
// "..", ".%2e", ".%2E", "%2e.", "%2E.",
// "%2e%2e", "%2E%2E", "%2e%2E", or "%2E%2e"
static inline bool IsDoubleDotSegment(std::string str) {
switch (str.size()) {
case 2:
return str == "..";
case 4:
if (str[0] != '.' && str[0] != '%')
return false;
return ((str[0] == '.' &&
str[1] == '%' &&
str[2] == '2' &&
TO_LOWER(str[3]) == 'e') ||
(str[0] == '%' &&
str[1] == '2' &&
TO_LOWER(str[2]) == 'e' &&
str[3] == '.'));
case 6:
return (str[0] == '%' &&
str[1] == '2' &&
TO_LOWER(str[2]) == 'e' &&
str[3] == '%' &&
str[4] == '2' &&
TO_LOWER(str[5]) == 'e');
default:
return false;
}
}
static void Parse(Environment* env,
Local<Value> recv,
const char* input,
const size_t len,
enum url_parse_state override,
Local<Object> base_obj,
Local<Object> context_obj,
Local<Function> cb) {
Isolate* isolate = env->isolate();
Local<Context> context = env->context();
HandleScope handle_scope(isolate);
Context::Scope context_scope(context);
const bool has_base = base_obj->IsObject();
bool atflag = false;
bool sbflag = false;
bool uflag = false;
bool base_is_file = false;
int wskip = 0;
struct url_data base;
struct url_data url;
if (context_obj->IsObject())
HarvestContext(env, &url, context_obj);
if (has_base)
HarvestBase(env, &base, base_obj);
std::string buffer;
url.scheme.reserve(len);
url.username.reserve(len);
url.password.reserve(len);
url.host.reserve(len);
url.path.reserve(len);
url.query.reserve(len);
url.fragment.reserve(len);
buffer.reserve(len);
// Set the initial parse state.
const bool state_override = override != kUnknownState;
enum url_parse_state state = state_override ? override : kSchemeStart;
const char* p = input;
const char* end = input + len;
if (state < kSchemeStart || state > kFragment) {
INVALID_PARSE_STATE();
goto done;
}
while (p <= end) {
const char ch = p < end ? p[0] : kEOL;
if (TAB_AND_NEWLINE(ch)) {
if (state == kAuthority) {
// It's necessary to keep track of how much whitespace
// is being ignored when in kAuthority state because of
// how the buffer is managed. TODO: See if there's a better
// way
wskip++;
}
p++;
continue;
}
bool special = url.flags & URL_FLAGS_SPECIAL;
const bool special_back_slash = (special && ch == '\\');
switch (state) {
case kSchemeStart:
if (ASCII_ALPHA(ch)) {
buffer += TO_LOWER(ch);
state = kScheme;
} else if (!state_override) {
state = kNoScheme;
continue;
} else {
TERMINATE()
}
break;
case kScheme:
if (SCHEME_CHAR(ch)) {
buffer += TO_LOWER(ch);
p++;
continue;
} else if (ch == ':' || (state_override && ch == kEOL)) {
buffer += ':';
if (buffer.size() > 0) {
SET_HAVE_SCHEME()
url.scheme = buffer;
}
if (IsSpecial(url.scheme)) {
SPECIAL()
} else {
url.flags &= ~URL_FLAGS_SPECIAL;
}
if (state_override)
goto done;
buffer.clear();
if (url.scheme == "file:") {
state = kFile;
} else if (special &&
has_base &&
DOES_HAVE_SCHEME(base) &&
url.scheme == base.scheme) {
state = kSpecialRelativeOrAuthority;
} else if (special) {
state = kSpecialAuthoritySlashes;
} else if (p[1] == '/') {
state = kPathOrAuthority;
p++;
} else {
CANNOT_BE_BASE()
SET_HAVE_PATH()
url.path.push_back("");
state = kCannotBeBase;
}
} else if (!state_override) {
buffer.clear();
state = kNoScheme;
p = input;
continue;
} else {
TERMINATE()
}
break;
case kNoScheme:
if (!has_base || (IS_CANNOT_BE_BASE(base.flags) && ch != '#')) {
FAILED()
} else if (IS_CANNOT_BE_BASE(base.flags) && ch == '#') {
SET_HAVE_SCHEME()
url.scheme = base.scheme;
if (IsSpecial(url.scheme)) {
SPECIAL()
} else {
url.flags &= ~URL_FLAGS_SPECIAL;
}
if (DOES_HAVE_PATH(base)) {
SET_HAVE_PATH()
url.path = base.path;
}
if (DOES_HAVE_QUERY(base)) {
SET_HAVE_QUERY()
url.query = base.query;
}
if (DOES_HAVE_FRAGMENT(base)) {
SET_HAVE_FRAGMENT()
url.fragment = base.fragment;
}
CANNOT_BE_BASE()
state = kFragment;
} else if (has_base &&
DOES_HAVE_SCHEME(base) &&
base.scheme != "file:") {
state = kRelative;
continue;
} else {
SET_HAVE_SCHEME()
url.scheme = "file:";
SPECIAL()
state = kFile;
continue;
}
break;
case kSpecialRelativeOrAuthority:
if (ch == '/' && p[1] == '/') {
state = kSpecialAuthorityIgnoreSlashes;
p++;
} else {
state = kRelative;
continue;
}
break;
case kPathOrAuthority:
if (ch == '/') {
state = kAuthority;
} else {
state = kPath;
continue;
}
break;
case kRelative:
SET_HAVE_SCHEME()
url.scheme = base.scheme;
if (IsSpecial(url.scheme)) {
SPECIAL()
} else {
url.flags &= ~URL_FLAGS_SPECIAL;
}
switch (ch) {
case kEOL:
if (DOES_HAVE_USERNAME(base)) {
SET_HAVE_USERNAME()
url.username = base.username;
}
if (DOES_HAVE_PASSWORD(base)) {
SET_HAVE_PASSWORD()
url.password = base.password;
}
if (DOES_HAVE_HOST(base)) {
SET_HAVE_HOST()
url.host = base.host;
}
if (DOES_HAVE_QUERY(base)) {
SET_HAVE_QUERY()
url.query = base.query;
}
if (DOES_HAVE_PATH(base)) {
SET_HAVE_PATH()
url.path = base.path;
}
url.port = base.port;
break;
case '/':
state = kRelativeSlash;
break;
case '?':
if (DOES_HAVE_USERNAME(base)) {
SET_HAVE_USERNAME()
url.username = base.username;
}
if (DOES_HAVE_PASSWORD(base)) {
SET_HAVE_PASSWORD()
url.password = base.password;
}
if (DOES_HAVE_HOST(base)) {
SET_HAVE_HOST()
url.host = base.host;
}
if (DOES_HAVE_PATH(base)) {
SET_HAVE_PATH()
url.path = base.path;
}
url.port = base.port;
state = kQuery;
break;
case '#':
if (DOES_HAVE_USERNAME(base)) {
SET_HAVE_USERNAME()
url.username = base.username;
}
if (DOES_HAVE_PASSWORD(base)) {
SET_HAVE_PASSWORD()
url.password = base.password;
}
if (DOES_HAVE_HOST(base)) {
SET_H
B328
AVE_HOST()
url.host = base.host;
}
if (DOES_HAVE_QUERY(base)) {
SET_HAVE_QUERY()
url.query = base.query;
}
if (DOES_HAVE_PATH(base)) {
SET_HAVE_PATH()
url.path = base.path;
}
url.port = base.port;
state = kFragment;
break;
default:
if (special_back_slash) {
state = kRelativeSlash;
} else {
if (DOES_HAVE_USERNAME(base)) {
SET_HAVE_USERNAME()
url.username = base.username;
}
if (DOES_HAVE_PASSWORD(base)) {
SET_HAVE_PASSWORD()
url.password = base.password;
}
if (DOES_HAVE_HOST(base)) {
SET_HAVE_HOST()
url.host = base.host;
}
if (DOES_HAVE_PATH(base)) {
SET_HAVE_PATH()
url.path = base.path;
if (!url.path.empty())
url.path.pop_back();
}
url.port = base.port;
state = kPath;
continue;
}
}
break;
case kRelativeSlash:
if (ch == '/' || special_back_slash) {
state = kSpecialAuthorityIgnoreSlashes;
} else {
if (DOES_HAVE_USERNAME(base)) {
SET_HAVE_USERNAME()
url.username = base.username;
}
if (DOES_HAVE_PASSWORD(base)) {
SET_HAVE_PASSWORD()
url.password = base.password;
}
if (DOES_HAVE_HOST(base)) {
SET_HAVE_HOST()
url.host = base.host;
}
url.port = base.port;
state = kPath;
continue;
}
break;
case kSpecialAuthoritySlashes:
state = kSpecialAuthorityIgnoreSlashes;
if (ch == '/' && p[1] == '/') {
p++;
} else {
continue;
}
break;
case kSpecialAuthorityIgnoreSlashes:
if (ch != '/' && ch != '\\') {
state = kAuthority;
continue;
}
break;
case kAuthority:
if (ch == '@') {
if (atflag) {
buffer.reserve(buffer.size() + 3);
buffer.insert(0, "%40");
}
atflag = true;
const size_t blen = buffer.size();
if (blen > 0 && buffer[0] != ':') {
SET_HAVE_USERNAME()
}
for (size_t n = 0; n < blen; n++) {
const char bch = buffer[n];
if (bch == ':') {
SET_HAVE_PASSWORD()
if (!uflag) {
uflag = true;
continue;
}
}
if (uflag) {
AppendOrEscape(&url.password, bch, UserinfoEncodeSet);
} else {
AppendOrEscape(&url.username, bch, UserinfoEncodeSet);
}
}
buffer.clear();
} else if (ch == kEOL ||
ch == '/' ||
ch == '?' ||
ch == '#' ||
special_back_slash) {
p -= buffer.size() + 1 + wskip;
buffer.clear();
state = kHost;
} else {
buffer += ch;
}
break;
case kHost:
case kHostname:
if (ch == ':' && !sbflag) {
if (special && buffer.size() == 0)
FAILED()
SET_HAVE_HOST()
if (ParseHost(&buffer, &url.host) < 0)
FAILED()
buffer.clear();
state = kPort;
if (override == kHostname)
TERMINATE()
} else if (ch == kEOL ||
ch == '/' ||
ch == '?' ||
ch == '#' ||
special_back_slash) {
p--;