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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 "net/base/host_port_pair.h"
#include "base/logging.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/memory_usage_estimator.h"
#include "net/base/ip_endpoint.h"
#include "net/base/url_util.h"
#include "url/gurl.h"
#include "url/scheme_host_port.h"
namespace net {
HostPortPair::HostPortPair() : port_(0) {}
HostPortPair::HostPortPair(base::StringPiece in_host, uint16_t in_port)
: host_(in_host), port_(in_port) {}
// static
HostPortPair HostPortPair::FromURL(const GURL& url) {
return HostPortPair(url.HostNoBrackets(),
static_cast<uint16_t>(url.EffectiveIntPort()));
}
// static
HostPortPair HostPortPair::FromSchemeHostPort(
const url::SchemeHostPort& scheme_host_port) {
DCHECK(scheme_host_port.IsValid());
// HostPortPair assumes hostnames do not have surrounding brackets (as is
// commonly used for IPv6 literals), so strip them if present.
base::StringPiece host = scheme_host_port.host();
if (host.size() >= 2 && host.front() == '[' && host.back() == ']') {
host = host.substr(1, host.size() - 2);
}
return HostPortPair(host, scheme_host_port.port());
}
// static
HostPortPair HostPortPair::FromIPEndPoint(const IPEndPoint& ipe) {
return HostPortPair(ipe.ToStringWithoutPort(), ipe.port());
}
// static
HostPortPair HostPortPair::FromString(base::StringPiece str) {
// Input with more than one ':' is ambiguous unless it contains an IPv6
// literal (signified by starting with a '['). ParseHostAndPort() allows such
// input and always uses the last ':' as the host/port delimiter, but because
// HostPortPair often deals with IPv6 literals without brackets, disallow such
// input here to prevent a common error.
if (base::SplitStringPiece(str, ":", base::KEEP_WHITESPACE,
base::SPLIT_WANT_ALL)
.size() > 2 &&
str.front() != '[') {
return HostPortPair();
}
std::string host;
int port;
if (!ParseHostAndPort(str, &host, &port))
return HostPortPair();
// Require a valid port.
if (port == -1)
return HostPortPair();
DCHECK(base::IsValueInRangeForNumericType<uint16_t>(port));
return HostPortPair(host, port);
}
std::string HostPortPair::ToString() const {
std::string ret(HostForURL());
ret += ':';
ret += base::NumberToString(port_);
return ret;
}
std::string HostPortPair::HostForURL() const {
// TODO(rtenneti): Add support for |host| to have '\0'.
if (host_.find('\0') != std::string::npos) {
std::string host_for_log(host_);
size_t nullpos;
while ((nullpos = host_for_log.find('\0')) != std::string::npos) {
host_for_log.replace(nullpos, 1, "%00");
}
LOG(DFATAL) << "Host has a null char: " << host_for_log;
}
// Check to see if the host is an IPv6 address. If so, added brackets.
if (host_.find(':') != std::string::npos) {
DCHECK_NE(host_[0], '[');
return base::StringPrintf("[%s]", host_.c_str());
}
return host_;
}
} // namespace net
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