summaryrefslogtreecommitdiff
path: root/src/fs/virtfs/virtfsdir.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/fs/virtfs/virtfsdir.cpp')
-rw-r--r--src/fs/virtfs/virtfsdir.cpp651
1 files changed, 651 insertions, 0 deletions
diff --git a/src/fs/virtfs/virtfsdir.cpp b/src/fs/virtfs/virtfsdir.cpp
new file mode 100644
index 000000000..13c2f9ba4
--- /dev/null
+++ b/src/fs/virtfs/virtfsdir.cpp
@@ -0,0 +1,651 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2013-2017 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "fs/virtfs/virtfsdir.h"
+
+#include "fs/files.h"
+#include "fs/mkdir.h"
+#include "fs/paths.h"
+#include "fs/virtfs.h"
+#include "fs/virtfile.h"
+#include "fs/virtfsfuncs.h"
+#include "fs/virtlist.h"
+
+#include "fs/virtfs/virtdirentry.h"
+#include "fs/virtfs/virtfileprivate.h"
+
+#include "utils/checkutils.h"
+#include "utils/dtor.h"
+#include "utils/stringutils.h"
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <iostream>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "debug.h"
+
+extern const char *dirSeparator;
+
+namespace
+{
+ std::vector<VirtDirEntry*> mEntries;
+ std::string mWriteDir;
+ std::string mBaseDir;
+ std::string mUserDir;
+ bool mPermitLinks = false;
+ VirtFsFuncs funcs;
+} // namespace
+
+namespace VirtFsDir
+{
+ namespace
+ {
+ static VirtFile *openFile(std::string filename,
+ const int mode)
+ {
+ prepareFsPath(filename);
+ if (checkPath(filename) == false)
+ {
+ reportAlways("VirtFsDir::openFile invalid path: %s",
+ filename.c_str());
+ return nullptr;
+ }
+ VirtDirEntry *const entry = searchEntryByPath(filename);
+ if (entry == nullptr)
+ return nullptr;
+
+ const std::string path = entry->mRootDir + filename;
+ const int fd = open(path.c_str(),
+ mode,
+ S_IRUSR | S_IWUSR);
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::openFile file open error: %s",
+ filename.c_str());
+ return nullptr;
+ }
+ VirtFile *restrict const file = new VirtFile(&funcs);
+ file->mPrivate = new VirtFilePrivate(fd);
+
+ return file;
+ }
+ } // namespace
+
+ VirtFile *openReadDirEntry(VirtDirEntry *const entry,
+ const std::string &filename)
+ {
+ const std::string path = entry->mRootDir + filename;
+ const int fd = open(path.c_str(),
+ O_RDONLY,
+ S_IRUSR | S_IWUSR);
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::openReadDirEntry file open error: %s",
+ filename.c_str());
+ return nullptr;
+ }
+ VirtFile *restrict const file = new VirtFile(&funcs);
+ file->mPrivate = new VirtFilePrivate(fd);
+
+ return file;
+ }
+
+ VirtDirEntry *searchEntryByRoot(const std::string &restrict root)
+ {
+ FOR_EACH (std::vector<VirtDirEntry*>::const_iterator, it, mEntries)
+ {
+ if ((*it)->mRootDir == root)
+ return *it;
+ }
+ return nullptr;
+ }
+
+ VirtDirEntry *searchEntryByPath(const std::string &restrict path)
+ {
+ FOR_EACH (std::vector<VirtDirEntry*>::const_iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ if (Files::existsLocal(entry->mRootDir + path))
+ return entry;
+ }
+ return nullptr;
+ }
+
+ bool addToSearchPathSilent(std::string newDir,
+ const Append append,
+ const SkipError skipError)
+ {
+ prepareFsPath(newDir);
+ if (skipError == SkipError_false &&
+ Files::existsLocal(newDir) == false)
+ {
+ logger->log("VirtFsDir::addToSearchPath directory not exists: %s",
+ newDir.c_str());
+ return false;
+ }
+ if (newDir.find(".zip") != std::string::npos)
+ {
+ reportAlways("Called VirtFsDir::addToSearchPath with zip archive");
+ return false;
+ }
+ std::string rootDir = newDir;
+ if (findLast(rootDir, std::string(dirSeparator)) == false)
+ rootDir += dirSeparator;
+ VirtDirEntry *const entry = VirtFsDir::searchEntryByRoot(rootDir);
+ if (entry != nullptr)
+ {
+ reportAlways("VirtFsDir::addToSearchPath already exists: %s",
+ newDir.c_str());
+ return false;
+ }
+ logger->log("Add virtual directory: " + newDir);
+ if (append == Append_true)
+ {
+ mEntries.push_back(new VirtDirEntry(newDir,
+ rootDir));
+ }
+ else
+ {
+ mEntries.insert(mEntries.begin(),
+ new VirtDirEntry(newDir,
+ rootDir));
+ }
+ return true;
+ }
+
+ bool addToSearchPath(std::string newDir,
+ const Append append)
+ {
+ prepareFsPath(newDir);
+ if (Files::existsLocal(newDir) == false)
+ {
+ reportAlways("VirtFsDir::addToSearchPath directory not exists: %s",
+ newDir.c_str());
+ return false;
+ }
+ if (newDir.find(".zip") != std::string::npos)
+ {
+ reportAlways("Called VirtFsDir::addToSearchPath with zip archive");
+ return false;
+ }
+ std::string rootDir = newDir;
+ if (findLast(rootDir, std::string(dirSeparator)) == false)
+ rootDir += dirSeparator;
+ VirtDirEntry *const entry = VirtFsDir::searchEntryByRoot(rootDir);
+ if (entry != nullptr)
+ {
+ reportAlways("VirtFsDir::addToSearchPath already exists: %s",
+ newDir.c_str());
+ return false;
+ }
+ logger->log("Add virtual directory: " + newDir);
+ if (append == Append_true)
+ {
+ mEntries.push_back(new VirtDirEntry(newDir,
+ rootDir));
+ }
+ else
+ {
+ mEntries.insert(mEntries.begin(),
+ new VirtDirEntry(newDir,
+ rootDir));
+ }
+ return true;
+ }
+
+ bool removeFromSearchPathSilent(std::string oldDir)
+ {
+ prepareFsPath(oldDir);
+ if (oldDir.find(".zip") != std::string::npos)
+ {
+ reportAlways("Called removeFromSearchPath with zip archive");
+ return false;
+ }
+ if (findLast(oldDir, std::string(dirSeparator)) == false)
+ oldDir += dirSeparator;
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ if (entry->mRootDir == oldDir)
+ {
+ logger->log("Remove virtual directory: " + oldDir);
+ mEntries.erase(it);
+ delete entry;
+ return true;
+ }
+ }
+
+ logger->log("VirtFsDir::removeFromSearchPath not exists: %s",
+ oldDir.c_str());
+ return false;
+ }
+
+ bool removeFromSearchPath(std::string oldDir)
+ {
+ prepareFsPath(oldDir);
+ if (oldDir.find(".zip") != std::string::npos)
+ {
+ reportAlways("Called removeFromSearchPath with zip archive");
+ return false;
+ }
+ if (findLast(oldDir, std::string(dirSeparator)) == false)
+ oldDir += dirSeparator;
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ if (entry->mRootDir == oldDir)
+ {
+ logger->log("Remove virtual directory: " + oldDir);
+ mEntries.erase(it);
+ delete entry;
+ return true;
+ }
+ }
+
+ reportAlways("VirtFsDir::removeFromSearchPath not exists: %s",
+ oldDir.c_str());
+ return false;
+ }
+
+ std::vector<VirtDirEntry*> &getEntries()
+ {
+ return mEntries;
+ }
+
+ void deinit()
+ {
+ delete_all(mEntries);
+ mEntries.clear();
+ }
+
+#if defined(__native_client__)
+ void init(const std::string &restrict name A_UNUSED)
+ {
+ mBaseDir = "/";
+#elif defined(ANDROID)
+ void init(const std::string &restrict name A_UNUSED)
+ {
+ mBaseDir = getRealPath(".");
+#else // defined(__native_client__)
+
+ void init(const std::string &restrict name)
+ {
+ mBaseDir = getRealPath(getFileDir(name));
+#endif // defined(__native_client__)
+
+ prepareFsPath(mBaseDir);
+ mUserDir = getHomePath();
+ prepareFsPath(mUserDir);
+ initFuncs(&funcs);
+ }
+
+ void initFuncs(VirtFsFuncs *restrict const ptr)
+ {
+ ptr->close = &VirtFsDir::close;
+ ptr->read = &VirtFsDir::read;
+ ptr->write = &VirtFsDir::write;
+ ptr->fileLength = &VirtFsDir::fileLength;
+ ptr->tell = &VirtFsDir::tell;
+ ptr->seek = &VirtFsDir::seek;
+ ptr->eof = &VirtFsDir::eof;
+ }
+
+ const char *getBaseDir()
+ {
+ return mBaseDir.c_str();
+ }
+
+ const char *getUserDir()
+ {
+ return mUserDir.c_str();
+ }
+
+ std::string getRealDir(std::string filename)
+ {
+ prepareFsPath(filename);
+ if (checkPath(filename) == false)
+ {
+ reportAlways("VirtFsDir::exists invalid path: %s",
+ filename.c_str());
+ return std::string();
+ }
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ const std::string path = entry->mRootDir + filename;
+ if (Files::existsLocal(path))
+ return entry->mUserDir;
+ }
+ return std::string();
+ }
+
+ bool exists(std::string name)
+ {
+ prepareFsPath(name);
+ if (checkPath(name) == false)
+ {
+ reportAlways("VirtFsDir::exists invalid path: %s",
+ name.c_str());
+ return false;
+ }
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ if (Files::existsLocal(entry->mRootDir + name))
+ return true;
+ }
+ return false;
+ }
+
+ VirtList *enumerateFiles(std::string dirName)
+ {
+ VirtList *const list = new VirtList;
+ prepareFsPath(dirName);
+ if (checkPath(dirName) == false)
+ {
+ reportAlways("VirtFsDir::enumerateFiles invalid path: %s",
+ dirName.c_str());
+ return list;
+ }
+ return enumerateFiles(dirName, list);
+ }
+
+ VirtList *enumerateFiles(const std::string &restrict dirName,
+ VirtList *restrict const list)
+ {
+ StringVect &names = list->names;
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ StringVect files;
+ std::string path = entry->mRootDir + dirName;
+ if (findLast(path, std::string(dirSeparator)) == false)
+ path += dirSeparator;
+ const struct dirent *next_file = nullptr;
+ DIR *const dir = opendir(path.c_str());
+ if (dir)
+ {
+ while ((next_file = readdir(dir)))
+ {
+ const std::string file = next_file->d_name;
+ if (file == "." || file == "..")
+ continue;
+ if (mPermitLinks == false)
+ {
+ struct stat statbuf;
+ if (lstat(path.c_str(), &statbuf) == 0 &&
+ S_ISLNK(statbuf.st_mode) != 0)
+ {
+ continue;
+ }
+ }
+ bool found(false);
+ FOR_EACH (StringVectCIter, itn, names)
+ {
+ if (*itn == file)
+ {
+ found = true;
+ break;
+ }
+ }
+ if (found == false)
+ names.push_back(file);
+ }
+ closedir(dir);
+ }
+ }
+ return list;
+ }
+
+ bool isDirectory(std::string dirName)
+ {
+ prepareFsPath(dirName);
+ if (checkPath(dirName) == false)
+ {
+ reportAlways("VirtFsDir::isDirectory invalid path: %s",
+ dirName.c_str());
+ return false;
+ }
+ return isDirectoryInternal(dirName);
+ }
+
+ bool isDirectoryInternal(const std::string &restrict dirName)
+ {
+ FOR_EACH (std::vector<VirtDirEntry*>::iterator, it, mEntries)
+ {
+ VirtDirEntry *const entry = *it;
+ std::string path = entry->mRootDir + dirName;
+ if (findLast(path, std::string(dirSeparator)) == false)
+ path += dirSeparator;
+
+ struct stat statbuf;
+ if (stat(path.c_str(), &statbuf) == 0 &&
+ S_ISDIR(statbuf.st_mode) != 0)
+ {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ bool isSymbolicLink(std::string name)
+ {
+ prepareFsPath(name);
+ if (checkPath(name) == false)
+ {
+ reportAlways("VirtFsDir::isSymbolicLink invalid path: %s",
+ name.c_str());
+ return false;
+ }
+ if (mPermitLinks == false)
+ return false;
+
+ struct stat statbuf;
+ return lstat(name.c_str(), &statbuf) == 0 &&
+ S_ISLNK(statbuf.st_mode) != 0;
+ }
+
+ void freeList(VirtList *restrict const handle)
+ {
+ delete handle;
+ }
+
+ VirtFile *openRead(const std::string &restrict filename)
+ {
+ return openFile(filename, O_RDONLY);
+ }
+
+ VirtFile *openWrite(const std::string &restrict filename)
+ {
+ return openFile(filename, O_WRONLY | O_CREAT | O_TRUNC);
+ }
+
+ VirtFile *openAppend(const std::string &restrict filename)
+ {
+ return openFile(filename, O_WRONLY | O_CREAT | O_APPEND);
+ }
+
+ bool setWriteDir(std::string newDir)
+ {
+ prepareFsPath(newDir);
+ mWriteDir = newDir;
+ if (findLast(mWriteDir, std::string(dirSeparator)) == false)
+ mWriteDir += dirSeparator;
+ return true;
+ }
+
+ bool mkdir(std::string dirname)
+ {
+ prepareFsPath(dirname);
+ if (mWriteDir.empty())
+ {
+ reportAlways("VirtFsDir::mkdir write dir is empty");
+ return false;
+ }
+ return mkdir_r((mWriteDir + dirname).c_str()) != -1;
+ }
+
+ bool remove(std::string filename)
+ {
+ prepareFsPath(filename);
+ if (mWriteDir.empty())
+ {
+ reportAlways("VirtFsDir::remove write dir is empty");
+ return false;
+ }
+ return ::remove((mWriteDir + filename).c_str()) != 0;
+ }
+
+ void permitLinks(const bool val)
+ {
+ mPermitLinks = val;
+ }
+
+ const char *getLastError()
+ {
+ return nullptr;
+ }
+
+ int close(VirtFile *restrict const file)
+ {
+ if (file == nullptr)
+ return 0;
+ delete file;
+ return 1;
+ }
+
+ int64_t read(VirtFile *restrict const file,
+ void *restrict const buffer,
+ const uint32_t objSize,
+ const uint32_t objCount)
+ {
+ if (file == nullptr)
+ return 0;
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::read file not opened.");
+ return 0;
+ }
+ int max = objSize * objCount;
+ int cnt = ::read(fd, buffer, max);
+ if (cnt <= 0)
+ return cnt;
+ return cnt / objSize;
+ }
+
+ int64_t write(VirtFile *restrict const file,
+ const void *restrict const buffer,
+ const uint32_t objSize,
+ const uint32_t objCount)
+ {
+ if (file == nullptr)
+ return 0;
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::write file not opened.");
+ return 0;
+ }
+ int max = objSize * objCount;
+ int cnt = ::write(fd, buffer, max);
+ if (cnt <= 0)
+ return cnt;
+ return cnt / objSize;
+ }
+
+ int64_t fileLength(VirtFile *restrict const file)
+ {
+ if (file == nullptr)
+ return -1;
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::fileLength file not opened.");
+ return 0;
+ }
+ struct stat statbuf;
+ if (fstat(fd, &statbuf) == -1)
+ {
+ reportAlways("VirtFsDir::fileLength error.");
+ return -1;
+ }
+ return static_cast<int64_t>(statbuf.st_size);
+ }
+
+ int64_t tell(VirtFile *restrict const file)
+ {
+ if (file == nullptr)
+ return -1;
+
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::tell file not opened.");
+ return 0;
+ }
+ const int64_t pos = lseek(fd, 0, SEEK_CUR);
+ return pos;
+ }
+
+ int seek(VirtFile *restrict const file,
+ const uint64_t pos)
+ {
+ if (file == nullptr)
+ return 0;
+
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::seek file not opened.");
+ return 0;
+ }
+ const int64_t res = lseek(fd, pos, SEEK_SET);
+ if (res == -1)
+ return 0;
+ return 1;
+ }
+
+ int eof(VirtFile *restrict const file)
+ {
+ if (file == nullptr)
+ return -1;
+
+ const int fd = file->mPrivate->mFd;
+ if (fd == -1)
+ {
+ reportAlways("VirtFsDir::eof file not opened.");
+ return 0;
+ }
+ const int64_t pos = lseek(fd, 0, SEEK_CUR);
+ struct stat statbuf;
+ if (fstat(fd, &statbuf) == -1)
+ {
+ reportAlways("VirtFsDir::fileLength error.");
+ return -1;
+ }
+ const int64_t len = static_cast<int64_t>(statbuf.st_size);
+ return pos < 0 || len < 0 || pos >= len;
+ }
+} // namespace VirtFs