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      1 // Copyright (c) 2011 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/net_util.h"
      6 
      7 #ifndef ANDROID
      8 #include <ifaddrs.h>
      9 #endif
     10 #include <sys/types.h>
     11 
     12 #include "base/eintr_wrapper.h"
     13 #include "base/file_path.h"
     14 #include "base/logging.h"
     15 #include "base/string_util.h"
     16 #include "base/threading/thread_restrictions.h"
     17 #include "googleurl/src/gurl.h"
     18 #include "net/base/escape.h"
     19 #include "net/base/ip_endpoint.h"
     20 #include "net/base/net_errors.h"
     21 
     22 namespace net {
     23 
     24 bool FileURLToFilePath(const GURL& url, FilePath* path) {
     25   *path = FilePath();
     26   std::string& file_path_str = const_cast<std::string&>(path->value());
     27   file_path_str.clear();
     28 
     29   if (!url.is_valid())
     30     return false;
     31 
     32   // Firefox seems to ignore the "host" of a file url if there is one. That is,
     33   // file://foo/bar.txt maps to /bar.txt.
     34   // TODO(dhg): This should probably take into account UNCs which could
     35   // include a hostname other than localhost or blank
     36   std::string old_path = url.path();
     37 
     38   if (old_path.empty())
     39     return false;
     40 
     41   // GURL stores strings as percent-encoded 8-bit, this will undo if possible.
     42   old_path = UnescapeURLComponent(old_path,
     43       UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS);
     44 
     45   // Collapse multiple path slashes into a single path slash.
     46   std::string new_path;
     47   do {
     48     new_path = old_path;
     49     ReplaceSubstringsAfterOffset(&new_path, 0, "//", "/");
     50     old_path.swap(new_path);
     51   } while (new_path != old_path);
     52 
     53   file_path_str.assign(old_path);
     54 
     55   return !file_path_str.empty();
     56 }
     57 
     58 #ifndef ANDROID
     59 bool GetNetworkList(NetworkInterfaceList* networks) {
     60   // getifaddrs() may require IO operations.
     61   base::ThreadRestrictions::AssertIOAllowed();
     62 
     63   ifaddrs *ifaddr;
     64   if (getifaddrs(&ifaddr) < 0) {
     65     PLOG(ERROR) << "getifaddrs";
     66     return false;
     67   }
     68 
     69   for (ifaddrs *ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
     70     int family = ifa->ifa_addr->sa_family;
     71     if (family == AF_INET || family == AF_INET6) {
     72       IPEndPoint address;
     73       std::string name = ifa->ifa_name;
     74       if (address.FromSockAddr(ifa->ifa_addr,
     75                                sizeof(ifa->ifa_addr)) &&
     76           name.substr(0, 2) != "lo") {
     77         networks->push_back(NetworkInterface(name, address.address()));
     78       }
     79     }
     80   }
     81 
     82   freeifaddrs(ifaddr);
     83 
     84   return true;
     85 }
     86 #endif
     87 
     88 }  // namespace net
     89