src/Filesystem/FilesystemUtils.cpp

   1 //
   2 // Tizen Web Device API
   3 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
   4 //
   5 // Licensed under the Apache License, Version 2.0 (the License);
   6 // you may not use this file except in compliance with the License.
   7 // You may obtain a copy of the License at
   8 //
   9 // http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing, software
  12 // distributed under the License is distributed on an "AS IS" BASIS,
  13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 // See the License for the specific language governing permissions and
  15 // limitations under the License.
  16 //
  17
  18
  19 #include <map>
  20 #include <string>
  21 #include <dpl/log/log.h>
  22 #include <dpl/assert.h>
  23 #include <Commons/Exception.h>
  24 #include "Enums.h"
  25 #include "IManager.h"
  26 #include <Commons/WrtAccess/WrtAccess.h>
  27 #include <WidgetDB/WidgetDBMgr.h>
  28 #include <iconv.h>
  29 #include "FilesystemUtils.h"
  30
  31 using namespace WrtDeviceApis;
  32 using namespace WrtDeviceApis::Commons;
  33
  34 namespace {
  35 const std::string PATH_INVALID_COMPONENT_PARENT_DIR("..");
  36 const std::string PATH_INVALID_COMPONENT_CURRENT_DIR(".");
  37
  38 typedef std::map<std::string, std::string> RootToPathMap;
  39 typedef RootToPathMap::const_iterator RootToPathMapIterator;
  40 typedef std::map<std::string, std::string> PathToRootMap;
  41 typedef PathToRootMap::const_iterator PathToRootMapIterator;
  42 }
  43
  44 namespace DeviceAPI {
  45 namespace Filesystem {
  46 namespace Utils{
  47 const RootToPathMap& getRootToPathMap()
  48 {
  49         static RootToPathMap result;
  50         if (result.empty()) {
  51         IManager& manager = IManager::getInstance();
  52                 std::map<std::string, IPathPtr> locations = manager.getStorageList();
  53
  54                 std::map<std::string, IPathPtr>::const_iterator it;
  55
  56                 for (it = locations.begin(); it != locations.end(); ++it) {
  57                         result[it->first] = it->second->getFullPath();
  58                 }
  59         }
  60         return result;
  61 }
  62
  63 const PathToRootMap& getPathToRootMap()
  64 {
  65         static PathToRootMap result;
  66         if (result.empty()) {
  67                 IManager& manager = IManager::getInstance();
  68                 std::map<std::string, IPathPtr> locations = manager.getStorageList();
  69
  70                 std::map<std::string, IPathPtr>::const_iterator it;
  71
  72                 for (it = locations.begin(); it != locations.end(); ++it) {
  73                         result[it->second->getFullPath()] = it->first;
  74                 }
  75         }
  76         return result;
  77 }
  78
  79 IPathPtr fromVirtualPath(JSContextRef context,
  80                          const std::string& arg)
  81 {
  82         LogDebug("arg:[" << arg << "]");
  83
  84         // uri path, strip file://
  85         if (isUriPath(arg)) {
  86                 std::string stripPath = arg.substr(strlen("file://"));
  87                 LogDebug("uri absolute path" << stripPath);
  88                 IPathPtr result = IPath::create(stripPath);
  89
  90                 return result;
  91         }
  92
  93         if (!isPathValid(arg)) {
  94                 LogDebug("virtual path is invalid:[" << arg << "]");
  95                 ThrowMsg(Commons::ConversionException, "Not found path component.");
  96         }
  97
  98         std::string root;
  99         std::string tail;
 100         std::string::size_type separatorPosition = arg.find(IPath::getSeparator());
 101         if (separatorPosition != std::string::npos) {
 102                 root = arg.substr(0, separatorPosition);
 103                 tail = arg.substr(separatorPosition + 1, arg.size() - 1);
 104         } else {
 105                 root = arg;
 106         }
 107
 108         int widgetId = WrtAccessSingleton::Instance().getWidgetId();
 109         WidgetDB::Api::IWidgetDBPtr widgetDB = WidgetDB::Api::getWidgetDB(widgetId);
 110
 111         RootToPathMap rootToPath = getRootToPathMap();
 112         rootToPath["wgt-package"] = widgetDB->getWidgetInstallationPath();
 113         rootToPath["wgt-private"] = widgetDB->getWidgetPersistentStoragePath();
 114         rootToPath["wgt-private-tmp"] = widgetDB->getWidgetTemporaryStoragePath();
 115         RootToPathMapIterator it = rootToPath.find(root);
 116
 117         if (it == rootToPath.end()) {
 118                 //ThrowMsg(Commons::NotFoundException, "Location not found.");
 119                 LogDebug("Allow non virtual root path " << arg);
 120                 return IPath::create(arg);
 121         }
 122
 123         IPathPtr result = IPath::create(it->second);
 124
 125         if (!tail.empty()) {
 126                 result->append(tail);
 127         }
 128
 129         return result;
 130 }
 131
 132 std::string toVirtualPath(JSContextRef context, const std::string& arg) {
 133
 134     int widgetId = WrtAccessSingleton::Instance().getWidgetId();
 135     WidgetDB::Api::IWidgetDBPtr widgetDB =
 136         WidgetDB::Api::getWidgetDB(widgetId);
 137
 138         PathToRootMap pathToRoot = getPathToRootMap();
 139         pathToRoot[widgetDB->getWidgetInstallationPath()] = "wgt-package";
 140         pathToRoot[widgetDB->getWidgetPersistentStoragePath()] = "wgt-private";
 141         pathToRoot[widgetDB->getWidgetTemporaryStoragePath()] = "wgt-private-tmp";
 142
 143         std::string path = arg;
 144
 145         std::string::size_type pos = path.size();
 146         while (std::string::npos != (pos = path.rfind(IPath::getSeparator(), pos))) {
 147                 PathToRootMapIterator it = pathToRoot.find(path);
 148                 if (pathToRoot.end() != it) {
 149                         return it->second + arg.substr(path.size());
 150                 }
 151                 path.erase(pos, path.size());
 152         }
 153         LogDebug("Allow non virtual root path");
 154
 155         return arg;
 156 //      ThrowMsg(Commons::ConversionException, "Path doesn't contain a valid location type.");
 157 }
 158
 159 bool isUriPath(const std::string& path) {
 160                 const char* uriPrefix = "file://";
 161                 const char* stringFromPath = path.c_str();
 162
 163                 if (!strncmp(uriPrefix, stringFromPath, strlen(uriPrefix)) && path[strlen(uriPrefix)] == '/') {
 164                         return true;
 165                 }
 166
 167                 return false;
 168 }
 169
 170 bool isPathValid(const std::string& path) {
 171         static const std::string currentDirBegin(PATH_INVALID_COMPONENT_CURRENT_DIR + IPath::getSeparator());
 172         static const std::string parentDirBegin(PATH_INVALID_COMPONENT_PARENT_DIR +
 173                 IPath::getSeparator());
 174         static const std::string currentDirMiddle(IPath::getSeparator() +
 175                 PATH_INVALID_COMPONENT_CURRENT_DIR +IPath::getSeparator());
 176         static const std::string parentDirMiddle(IPath::getSeparator() +
 177                 PATH_INVALID_COMPONENT_PARENT_DIR +IPath::getSeparator());
 178
 179         if (path.find(parentDirBegin) == 0 ||
 180                         path.find(currentDirBegin) == 0 ||
 181                 path.find(parentDirMiddle) != std::string::npos ||
 182                 path.find(currentDirMiddle) != std::string::npos) {
 183                 return false;
 184         }
 185
 186         return true;
 187 }
 188
 189 void toUTF8String(std::string fromEncoding, const char* from, const size_t fromLength, std::string &outputString)
 190 {
 191         const char *fromEncodingSet = fromEncoding.c_str();
 192         char *outputBuf = NULL;
 193         char *buf = NULL;
 194         int ret = 0;
 195         iconv_t cd;
 196         size_t outputLength= 0;
 197
 198         try {
 199 //              LogDebug("from " << fromEncodingSet << " to UTF8 conversion " << fromLength);
 200
 201                 cd = iconv_open("UTF-8", fromEncodingSet);
 202
 203                 if (cd == (iconv_t) -1)
 204                 {
 205                         LogDebug("charset conversion exception iconv -1");
 206                         ThrowMsg(Commons::PlatformException, "charset conversion exception");
 207                 }
 208
 209                 if (fromLength == 0)
 210                 {
 211                         LogDebug("from length 0");
 212                         ThrowMsg(Commons::PlatformException, "Couldn't allocate output buffer.");
 213                 }
 214
 215                 outputBuf = new char[fromLength * 4 + 1];
 216                 outputLength = fromLength * 4;
 217                 memset(outputBuf, 0, outputLength + 1);
 218                 buf = outputBuf;
 219
 220
 221                 ret = iconv(cd, (char**)&from, (size_t*)&fromLength, &buf, &outputLength);
 222
 223                 LogDebug(fromLength << " " << outputLength);
 224
 225                 if (ret < 0)
 226                 {
 227                         iconv_close(cd);
 228                         LogDebug("charset conversion exception ret " << ret);
 229                         ThrowMsg(Commons::PlatformException, "charset conversion exception");
 230                 }
 231
 232                 iconv_close(cd);
 233                 outputString = outputBuf;
 234
 235                 if (outputBuf)
 236                         delete[] outputBuf;
 237
 238         }
 239         Catch(std::bad_alloc) {
 240                 LogDebug("Couldn't allocate output buffer.");
 241                 ThrowMsg(Commons::PlatformException, "Couldn't allocate output buffer.");
 242         }
 243 }
 244 }
 245 }
 246 }