MediaScanner.cpp revision 462accab9dbcf8d1597de999328fa74337b3b88c
1413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber/* 2413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Copyright (C) 2009 The Android Open Source Project 3413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 4413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * you may not use this file except in compliance with the License. 6413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * You may obtain a copy of the License at 7413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 8413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 10413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Unless required by applicable law or agreed to in writing, software 11413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * See the License for the specific language governing permissions and 14413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * limitations under the License. 15413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber */ 16413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 171629399bb578fc176613ccaf134d1be6e3047638Andreas Huber//#define LOG_NDEBUG 0 181629399bb578fc176613ccaf134d1be6e3047638Andreas Huber#define LOG_TAG "MediaScanner" 191629399bb578fc176613ccaf134d1be6e3047638Andreas Huber#include <utils/Log.h> 201629399bb578fc176613ccaf134d1be6e3047638Andreas Huber 21413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <media/mediascanner.h> 22413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 23413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <sys/stat.h> 24413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber#include <dirent.h> 25413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 26413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Hubernamespace android { 27413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 28413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas HuberMediaScanner::MediaScanner() 29413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber : mLocale(NULL) { 30413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 31413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 32413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas HuberMediaScanner::~MediaScanner() { 33413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber setLocale(NULL); 34413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 35413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 36413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Hubervoid MediaScanner::setLocale(const char *locale) { 37413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (mLocale) { 38413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber free(mLocale); 39413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber mLocale = NULL; 40413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 41413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (locale) { 42413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber mLocale = strdup(locale); 43413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 44413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 45413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 46413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberconst char *MediaScanner::locale() const { 47413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return mLocale; 48413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 49413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 50413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberstatus_t MediaScanner::processDirectory( 51c59ad085c9737e8d56328732be6864de302acae9Mike Lockwood const char *path, MediaScannerClient &client, 52413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber ExceptionCheck exceptionCheck, void *exceptionEnv) { 53413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber int pathLength = strlen(path); 54413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (pathLength >= PATH_MAX) { 55413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return UNKNOWN_ERROR; 56413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 57413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber char* pathBuffer = (char *)malloc(PATH_MAX + 1); 58413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (!pathBuffer) { 59413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return UNKNOWN_ERROR; 60413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 61413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 62413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber int pathRemaining = PATH_MAX - pathLength; 63413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber strcpy(pathBuffer, path); 643e42b4491529975f771f8d71f931e24e120a7856Kenny Root if (pathLength > 0 && pathBuffer[pathLength - 1] != '/') { 65413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber pathBuffer[pathLength] = '/'; 66413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber pathBuffer[pathLength + 1] = 0; 67413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber --pathRemaining; 68413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 69413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 70413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber client.setLocale(locale()); 71413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 72413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber status_t result = 73462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood doProcessDirectory(pathBuffer, pathRemaining, client, false, exceptionCheck, exceptionEnv); 74413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 75413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber free(pathBuffer); 76413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 77413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return result; 78413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 79413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 80413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberstatus_t MediaScanner::doProcessDirectory( 81c59ad085c9737e8d56328732be6864de302acae9Mike Lockwood char *path, int pathRemaining, MediaScannerClient &client, 82462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood bool noMedia, ExceptionCheck exceptionCheck, void *exceptionEnv) { 83413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // place to copy file or directory name 84413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber char* fileSpot = path + strlen(path); 85413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber struct dirent* entry; 863e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood struct stat statbuf; 87413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 88462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood // Treat all files as non-media in directories that contain a ".nomedia" file 89413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (pathRemaining >= 8 /* strlen(".nomedia") */ ) { 90413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber strcpy(fileSpot, ".nomedia"); 91413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (access(path, F_OK) == 0) { 92462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood LOGD("found .nomedia, setting noMedia flag\n"); 93462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood noMedia = true; 94413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 95413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 96413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // restore path 97413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber fileSpot[0] = 0; 98413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 99413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 100413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber DIR* dir = opendir(path); 101413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (!dir) { 102413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber LOGD("opendir %s failed, errno: %d", path, errno); 103413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return UNKNOWN_ERROR; 104413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 105413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 106413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber while ((entry = readdir(dir))) { 107413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber const char* name = entry->d_name; 108413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 109413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // ignore "." and ".." 110413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) { 111413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber continue; 112413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 113413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 114ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood int nameLength = strlen(name); 115ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood if (nameLength + 1 > pathRemaining) { 116ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood // path too long! 117ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood continue; 118ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood } 119ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood strcpy(fileSpot, name); 120ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood 121413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber int type = entry->d_type; 122413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (type == DT_UNKNOWN) { 123413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // If the type is unknown, stat() the file instead. 124413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // This is sometimes necessary when accessing NFS mounted filesystems, but 125413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // could be needed in other cases well. 126413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (stat(path, &statbuf) == 0) { 127413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (S_ISREG(statbuf.st_mode)) { 128413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber type = DT_REG; 129413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } else if (S_ISDIR(statbuf.st_mode)) { 130413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber type = DT_DIR; 131413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 132413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } else { 133413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber LOGD("stat() failed for %s: %s", path, strerror(errno) ); 134413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 135413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 136413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (type == DT_REG || type == DT_DIR) { 137ef04e8f230e7ef5dece1cc4e73cd109c69905418Mike Lockwood if (type == DT_DIR) { 138462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood // set noMedia flag on directories with a name that starts with '.' 139413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // for example, the Mac ".Trashes" directory 140462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood if (name[0] == '.') 141462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood noMedia = true; 142413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 1433e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood // report the directory to the client 1443e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood if (stat(path, &statbuf) == 0) { 145462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood client.scanFile(path, statbuf.st_mtime, 0, true, noMedia); 1463e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood } 1473e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood 1483e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood // and now process its contents 149413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber strcat(fileSpot, "/"); 1503e9f9f1596d4225ddd9288b4f7b24a15221374dcMike Lockwood int err = doProcessDirectory(path, pathRemaining - nameLength - 1, client, 151462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood noMedia, exceptionCheck, exceptionEnv); 152413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (err) { 153413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // pass exceptions up - ignore other errors 154413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (exceptionCheck && exceptionCheck(exceptionEnv)) goto failure; 155413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber LOGE("Error processing '%s' - skipping\n", path); 156413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber continue; 157413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 158c59ad085c9737e8d56328732be6864de302acae9Mike Lockwood } else { 159413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber stat(path, &statbuf); 160462accab9dbcf8d1597de999328fa74337b3b88cMike Lockwood client.scanFile(path, statbuf.st_mtime, statbuf.st_size, false, noMedia); 161413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber if (exceptionCheck && exceptionCheck(exceptionEnv)) goto failure; 162413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 163413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 164413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber } 165413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 166413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber closedir(dir); 167413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return OK; 168413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberfailure: 169413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber closedir(dir); 170413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber return -1; 171413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} 172413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 173413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber} // namespace android 174