net/ftp/ftp_directory_listing_parser_netware.cc

   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/ftp/ftp_directory_listing_parser_netware.h"
   6
   7 #include <vector>
   8
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/string_split.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "net/ftp/ftp_directory_listing_parser.h"
  14 #include "net/ftp/ftp_util.h"
  15
  16 namespace {
  17
  18 bool LooksLikeNetwarePermissionsListing(const base::string16& text) {
  19   if (text.length() != 10)
  20     return false;
  21
  22   if (text[0] != '[' || text[9] != ']')
  23     return false;
  24   return (text[1] == 'R' || text[1] == '-') &&
  25          (text[2] == 'W' || text[2] == '-') &&
  26          (text[3] == 'C' || text[3] == '-') &&
  27          (text[4] == 'E' || text[4] == '-') &&
  28          (text[5] == 'A' || text[5] == '-') &&
  29          (text[6] == 'F' || text[6] == '-') &&
  30          (text[7] == 'M' || text[7] == '-') &&
  31          (text[8] == 'S' || text[8] == '-');
  32 }
  33
  34 }  // namespace
  35
  36 namespace net {
  37
  38 bool ParseFtpDirectoryListingNetware(
  39     const std::vector<base::string16>& lines,
  40     const base::Time& current_time,
  41     std::vector<FtpDirectoryListingEntry>* entries) {
  42   if (!lines.empty() &&
  43           !StartsWith(lines[0], base::ASCIIToUTF16("total "), true)) {
  44     return false;
  45   }
  46
  47   for (size_t i = 1U; i < lines.size(); i++) {
  48     if (lines[i].empty())
  49       continue;
  50
  51     std::vector<base::string16> columns;
  52     base::SplitString(base::CollapseWhitespace(lines[i], false), ' ', &columns);
  53
  54     if (columns.size() < 8)
  55       return false;
  56
  57     FtpDirectoryListingEntry entry;
  58
  59     if (columns[0].length() != 1)
  60       return false;
  61     if (columns[0][0] == 'd') {
  62       entry.type = FtpDirectoryListingEntry::DIRECTORY;
  63     } else if (columns[0][0] == '-') {
  64       entry.type = FtpDirectoryListingEntry::FILE;
  65     } else {
  66       return false;
  67     }
  68
  69     // Note: on older Netware systems the permissions listing is in the same
  70     // column as the entry type (just there is no space between them). We do not
  71     // support the older format here for simplicity.
  72     if (!LooksLikeNetwarePermissionsListing(columns[1]))
  73       return false;
  74
  75     if (!base::StringToInt64(columns[3], &entry.size))
  76       return false;
  77     if (entry.size < 0)
  78       return false;
  79     if (entry.type != FtpDirectoryListingEntry::FILE)
  80       entry.size = -1;
  81
  82     // Netware uses the same date listing format as Unix "ls -l".
  83     if (!FtpUtil::LsDateListingToTime(columns[4], columns[5], columns[6],
  84                                       current_time, &entry.last_modified)) {
  85       return false;
  86     }
  87
  88     entry.name = FtpUtil::GetStringPartAfterColumns(lines[i], 7);
  89
  90     entries->push_back(entry);
  91   }
  92
  93   return true;
  94 }
  95
  96 }  // namespace net