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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "net/base/host_port_pair.h"
      6 
      7 #include "base/logging.h"
      8 #include "base/strings/string_number_conversions.h"
      9 #include "base/strings/string_split.h"
     10 #include "base/strings/string_util.h"
     11 #include "base/strings/stringprintf.h"
     12 #include "net/base/ip_endpoint.h"
     13 #include "url/gurl.h"
     14 
     15 namespace net {
     16 
     17 HostPortPair::HostPortPair() : port_(0) {}
     18 HostPortPair::HostPortPair(const std::string& in_host, uint16 in_port)
     19     : host_(in_host), port_(in_port) {}
     20 
     21 // static
     22 HostPortPair HostPortPair::FromURL(const GURL& url) {
     23   return HostPortPair(url.HostNoBrackets(), url.EffectiveIntPort());
     24 }
     25 
     26 // static
     27 HostPortPair HostPortPair::FromIPEndPoint(const IPEndPoint& ipe) {
     28   return HostPortPair(ipe.ToStringWithoutPort(), ipe.port());
     29 }
     30 
     31 HostPortPair HostPortPair::FromString(const std::string& str) {
     32   std::vector<std::string> key_port;
     33   base::SplitString(str, ':', &key_port);
     34   if (key_port.size() != 2)
     35     return HostPortPair();
     36   int port;
     37   if (!base::StringToInt(key_port[1], &port))
     38     return HostPortPair();
     39   DCHECK_LT(port, 1 << 16);
     40   HostPortPair host_port_pair;
     41   host_port_pair.set_host(key_port[0]);
     42   host_port_pair.set_port(port);
     43   return host_port_pair;
     44 }
     45 
     46 std::string HostPortPair::ToString() const {
     47   return base::StringPrintf("%s:%u", HostForURL().c_str(), port_);
     48 }
     49 
     50 std::string HostPortPair::HostForURL() const {
     51   // TODO(rtenneti): Add support for |host| to have '\0'.
     52   if (host_.find('\0') != std::string::npos) {
     53     std::string host_for_log(host_);
     54     size_t nullpos;
     55     while ((nullpos = host_for_log.find('\0')) != std::string::npos) {
     56       host_for_log.replace(nullpos, 1, "%00");
     57     }
     58     LOG(DFATAL) << "Host has a null char: " << host_for_log;
     59   }
     60   // Check to see if the host is an IPv6 address.  If so, added brackets.
     61   if (host_.find(':') != std::string::npos) {
     62     DCHECK_NE(host_[0], '[');
     63     return base::StringPrintf("[%s]", host_.c_str());
     64   }
     65 
     66   return host_;
     67 }
     68 
     69 }  // namespace net
     70