RetroShare/libretroshare/src/dbase/findex.cc
2010-01-31 14:21:24 +00:00

1279 lines
29 KiB
C++

/*
* RetroShare FileCache Module: findex.cc
*
* Copyright 2004-2007 by Robert Fernie, Kefei Zhou.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#include "dbase/findex.h"
#include "rsiface/rsexpr.h"
#include "util/rsdir.h"
#include <assert.h>
#include <stdlib.h>
#include <algorithm>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <fstream>
#include <openssl/sha.h>
#include <util/rsthreads.h>
// This char is used to separate fields in the file list cache. It is supposed to be
// sufficiently safe on all systems.
//
static const char FILE_CACHE_SEPARATOR_CHAR = '|' ;
/****
#define FI_DEBUG 1
* #define FI_DEBUG_ALL 1
****/
static RsMutex FIndexPtrMtx ;
std::set<void*> FileIndex::_pointers ;
void FileIndex::registerEntry(void*p)
{
RsStackMutex m(FIndexPtrMtx) ;
_pointers.insert(p) ;
}
void FileIndex::unregisterEntry(void*p)
{
RsStackMutex m(FIndexPtrMtx) ;
_pointers.erase(p) ;
}
bool FileIndex::isValid(void*p)
{
RsStackMutex m(FIndexPtrMtx) ;
return _pointers.find(p) != _pointers.end() ;
}
DirEntry::~DirEntry()
{
/* cleanup */
std::map<std::string, DirEntry *>::iterator dit;
std::map<std::string, FileEntry *>::iterator fit;
for(dit = subdirs.begin(); dit != subdirs.end(); dit++)
{
FileIndex::unregisterEntry((void*)dit->second) ;
delete (dit->second);
}
subdirs.clear();
for(fit = files.begin(); fit != files.end(); fit++)
{
FileIndex::unregisterEntry((void*)fit->second) ;
delete (fit->second);
}
files.clear();
}
int DirEntry::checkParentPointers()
{
#ifdef FI_DEBUG
updateChildRows();
std::map<std::string, DirEntry *>::iterator dit;
for(dit = subdirs.begin(); dit != subdirs.end(); dit++)
{
/* debug check */
(dit->second)->checkParentPointers();
}
#endif
return 1;
}
int DirEntry::updateChildRows()
{
/* iterate through children and set row (parent should be good) */
std::map<std::string, DirEntry *>::iterator dit;
std::map<std::string, FileEntry *>::iterator fit;
int i = 0;
for(dit = subdirs.begin(); dit != subdirs.end(); dit++)
{
#ifdef FI_DEBUG
/* debug check */
if ((dit->second)->parent != this)
{
std::cerr << "DirEntry::updateChildRows()";
std::cerr << "****WARNING subdir Parent pointer invalid!";
std::cerr << std::endl;
(dit->second)->parent = this;
}
#endif
(dit->second)->row = i++;
}
for(fit = files.begin(); fit != files.end(); fit++)
{
#ifdef FI_DEBUG
/* debug check */
if ((fit->second)->parent != this)
{
std::cerr << "DirEntry::updateChildRows()";
std::cerr << "****WARNING file Parent pointer invalid!";
std::cerr << std::endl;
(fit->second)->parent = this;
}
#endif
(fit->second)->row = i++;
}
return 1;
}
int DirEntry::removeDir(std::string name)
{
/* if it doesn't exist - add */
std::map<std::string, DirEntry *>::iterator it;
DirEntry *ndir = NULL;
if (subdirs.end() != (it = subdirs.find(name)))
{
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::removeDir() Cleaning up dir: " << name;
std::cerr << std::endl;
#endif
ndir = (it->second);
subdirs.erase(it);
FileIndex::unregisterEntry((void*)ndir) ;
delete ndir;
/* update row counters */
updateChildRows();
return 1;
}
#ifdef FI_DEBUG
std::cerr << "DirEntry::removeDir() missing Entry: " << name;
std::cerr << std::endl;
#endif
return 0;
}
int DirEntry::removeFile(std::string name)
{
/* if it doesn't exist - add */
std::map<std::string, FileEntry *>::iterator it;
FileEntry *nfile = NULL;
if (files.end() != (it = files.find(name)))
{
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::removeFile() removing File: " << name;
std::cerr << std::endl;
#endif
nfile = (it->second);
files.erase(it);
FileIndex::unregisterEntry((void*)nfile) ;
delete nfile;
/* update row counters */
updateChildRows();
return 1;
}
#ifdef FI_DEBUG
std::cerr << "DirEntry::removeFile() missing Entry: " << name;
std::cerr << std::endl;
#endif
return 0;
}
int DirEntry::removeOldDir(std::string name, time_t old)
{
std::map<std::string, DirEntry *>::iterator it;
DirEntry *ndir = NULL;
if (subdirs.end() != (it = subdirs.find(name)))
{
ndir = (it->second);
if (ndir->updtime < old)
{
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::removeOldDir() Removing Old dir: " << name;
std::cerr << std::endl;
#endif
subdirs.erase(it);
FileIndex::unregisterEntry((void*)ndir) ;
delete ndir;
/* update row counters */
updateChildRows();
return 1;
}
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::removeOldDir() Keeping UptoDate dir: " << name;
std::cerr << std::endl;
#endif
return 0;
}
#ifdef FI_DEBUG
std::cerr << "DirEntry::removeDir() missing Entry: " << name;
std::cerr << std::endl;
#endif
return 0;
}
int DirEntry::removeOldEntries(time_t old, bool recursive)
{
/* remove old dirs from our lists -> then do children and files */
/* get all dirs with old time */
std::list<DirEntry *> removeList;
std::map<std::string, DirEntry *>::iterator it;
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
if ((it->second)->updtime < old)
{
removeList.push_back(it->second);
}
}
/* now remove the old entries */
std::list<DirEntry *>::iterator rit;
for(rit = removeList.begin(); rit != removeList.end(); rit++)
{
removeDir((*rit)->name);
}
if (recursive)
{
/* now handle children */
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
(it->second)->removeOldEntries(old, recursive);
}
}
/* now handle files similarly */
std::list<FileEntry *> removeFileList;
std::map<std::string, FileEntry *>::iterator fit;
for(fit = files.begin(); fit != files.end(); fit++)
{
if ((fit->second)->updtime < old)
{
removeFileList.push_back(fit->second);
}
}
/* now remove the old entries */
std::list<FileEntry *>::iterator rfit;
for(rfit = removeFileList.begin(); rfit != removeFileList.end(); rfit++)
{
removeFile((*rfit)->name);
}
return 1;
}
DirEntry *DirEntry::findOldDirectory(time_t old)
{
/* check if one of our directories is old ...
*/
/* get all dirs with old time */
std::map<std::string, DirEntry *>::iterator it;
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
if ((it->second)->updtime < old)
{
return (it->second);
}
}
/*
* else check chlidren.
*/
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
DirEntry *olddir = (it->second)->findOldDirectory(old);
if (olddir)
{
return olddir;
}
}
return NULL;
}
DirEntry *DirEntry::findDirectory(std::string fpath)
{
std::string nextdir = RsDirUtil::getRootDir(fpath);
std::map<std::string, DirEntry *>::iterator it;
if (subdirs.end() == (it = subdirs.find(nextdir)))
{
#ifdef FI_DEBUG
std::cerr << "DirEntry::findDirectory() Missing subdir:";
std::cerr << "\"" << nextdir << "\"";
std::cerr << std::endl;
#endif
return NULL;
}
std::string rempath = RsDirUtil::removeRootDir(fpath);
if (rempath == "")
{
return it->second;
}
return (it->second)->findDirectory(rempath);
}
int DirEntry::updateDirectories(std::string fpath, int new_pop, int new_modtime)
{
int ret = 1;
if (path != "") /* if not there -> continue down tree */
{
std::string nextdir = RsDirUtil::getRootDir(fpath);
std::map<std::string, DirEntry *>::iterator it;
if (subdirs.end() == (it = subdirs.find(nextdir)))
{
return 0;
}
std::string rempath = RsDirUtil::removeRootDir(fpath);
ret = (it->second)->updateDirectories(rempath, new_pop, new_modtime);
}
if (ret) /* if full path is okay -> update and return ok */
{
/* this is assumes that pop always increases! */
if (new_pop > pop)
{
pop = new_pop;
}
if (new_modtime > modtime)
{
modtime = new_modtime;
}
}
return ret;
}
DirEntry *DirEntry::updateDir(FileEntry fe, time_t utime)
{
/* if it doesn't exist - add */
std::map<std::string, DirEntry *>::iterator it;
DirEntry *ndir = NULL;
if (subdirs.end() == (it = subdirs.find(fe.name)))
{
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::updateDir() Adding Entry";
std::cerr << std::endl;
#endif
ndir = new DirEntry();
FileIndex::registerEntry((void*)ndir) ;
ndir -> parent = this;
ndir -> path = path + "/" + fe.name;
ndir -> name = fe.name;
ndir -> pop = 0;
ndir -> modtime = 0;
ndir -> updtime = utime;
subdirs[fe.name] = ndir;
/* update row counters */
updateChildRows();
return ndir;
}
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::updateDir() Updating Entry";
std::cerr << std::endl;
#endif
/* update utime */
ndir = (it->second);
ndir->updtime = utime;
return ndir;
}
FileEntry *DirEntry::updateFile(FileEntry fe, time_t utime)
{
/* if it doesn't exist - add */
std::map<std::string, FileEntry *>::iterator it;
FileEntry *nfile = NULL;
if (files.end() == (it = files.find(fe.name)))
{
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::updateFile() Adding Entry";
std::cerr << std::endl;
#endif
nfile = new FileEntry();
FileIndex::registerEntry((void*)nfile) ;
nfile -> parent = this;
nfile -> name = fe.name;
nfile -> hash = fe.hash;
nfile -> size = fe.size;
nfile -> pop = 0;
nfile -> modtime = fe.modtime;
nfile -> updtime = utime;
files[fe.name] = nfile;
/* update row counters */
updateChildRows();
return nfile;
}
#ifdef FI_DEBUG_ALL
std::cerr << "DirEntry::updateFile() Updating Entry";
std::cerr << std::endl;
#endif
/* update utime */
nfile = (it->second);
nfile -> parent = this;
nfile -> name = fe.name;
nfile -> hash = fe.hash;
nfile -> size = fe.size;
nfile -> modtime = fe.modtime;
nfile -> updtime = utime;
//nfile -> pop = 0; // not handled here.
return nfile;
}
int FileEntry::print(std::ostream &out)
{
/* print this dir, then subdirs, then files */
out << "file ";
out << std::setw(3) << std::setfill('0') << row;
out << " [" << updtime << "/" << modtime << "] : ";
if (parent)
out << parent->path;
else
out << "[MISSING PARENT]";
out << " " << name;
out << " [ s: " << size << " ] ==> ";
out << " [ " << hash << " ]";
out << std::endl;
return 1;
}
int DirEntry::print(std::ostream &out)
{
/* print this dir, then subdirs, then files */
out << "dir ";
out << std::setw(3) << std::setfill('0') << row;
out << " [" << updtime << "] : " << path;
out << std::endl;
std::map<std::string, DirEntry *>::iterator it;
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
(it->second)->print(out);
}
std::map<std::string, FileEntry *>::iterator fit;
for(fit = files.begin(); fit != files.end(); fit++)
{
(fit->second)->print(out);
}
return 1;
}
FileIndex::FileIndex(std::string pid)
{
root = new PersonEntry(pid);
registerEntry(root) ;
}
FileIndex::~FileIndex()
{
FileIndex::unregisterEntry((void*)root) ;
delete root;
}
int FileIndex::setRootDirectories(std::list<std::string> inlist, time_t updtime)
{
/* set update time to zero */
std::map<std::string, DirEntry *>::iterator it;
for(it = root->subdirs.begin(); it != root->subdirs.end(); it++)
{
(it->second)->updtime = 0;
}
std::list<std::string>::iterator ait;
FileEntry fe;
time_t utime = 1;
for(ait = inlist.begin(); ait != inlist.end(); ait++)
{
fe.name = (*ait);
/* see if it exists */
root->updateDir(fe, utime);
}
/* remove all dirs with zero time (non recursive) */
root->removeOldEntries(utime, false);
/* now flag remaining directories with correct update time */
for(it = root->subdirs.begin(); it != root->subdirs.end(); it++)
{
(it->second)->updtime = updtime;
}
return 1;
}
int FileIndex::getRootDirectories(std::list<std::string> &outlist)
{
/* set update time to zero */
std::map<std::string, DirEntry *>::iterator it;
for(it = root->subdirs.begin(); it != root->subdirs.end(); it++)
{
outlist.push_back(it->first);
}
return 1;
}
/* update (index building) */
DirEntry *FileIndex::updateDirEntry(std::string fpath, FileEntry fe, time_t utime)
{
/* path is to parent */
#ifdef FI_DEBUG_ALL
std::cerr << "FileIndex::updateDirEntry() Path: \"";
std::cerr << fpath << "\"" << " + \"" << fe.name << "\"";
std::cerr << std::endl;
#endif
DirEntry *parent = NULL;
if (fpath == "")
{
parent = root;
}
else
{
parent = root->findDirectory(fpath);
}
if (!parent) {
#ifdef FI_DEBUG
std::cerr << "FileIndex::updateDirEntry() NULL parent";
std::cerr << std::endl;
#endif
return NULL;
}
return parent -> updateDir(fe, utime);
}
FileEntry *FileIndex::updateFileEntry(std::string fpath, FileEntry fe, time_t utime)
{
/* path is to parent */
#ifdef FI_DEBUG_ALL
std::cerr << "FileIndex::updateFileEntry() Path: \"";
std::cerr << fpath << "\"" << " + \"" << fe.name << "\"";
std::cerr << std::endl;
#endif
DirEntry *parent = root->findDirectory(fpath);
if (!parent) {
#ifdef FI_DEBUG
std::cerr << "FileIndex::updateFileEntry() NULL parent";
std::cerr << std::endl;
#endif
return NULL;
}
return parent -> updateFile(fe, utime);
}
DirEntry *FileIndex::findOldDirectory(time_t old) /* finds directories older than old */
{
DirEntry *olddir = root->findOldDirectory(old);
#ifdef FI_DEBUG
std::cerr << "FileIndex::findOldDirectory(" << old << ") -> ";
if (olddir)
{
std::cerr << olddir->path;
}
else
{
std::cerr << "NONE";
}
std::cerr << std::endl;
#endif
return olddir;
}
int FileIndex::removeOldDirectory(std::string fpath, std::string name, time_t old)
{
/* path is to parent */
#ifdef FI_DEBUG_ALL
std::cerr << "FileIndex::removeOldDirectory() Path: \"";
std::cerr << fpath << "\"" << " + \"" << name << "\"";
std::cerr << std::endl;
#endif
/* because of this find - we cannot get a child of
* root (which is what we want!)
*/
DirEntry *parent = root->findDirectory(fpath);
/* for root directory case ... no subdir. */
if (fpath == "")
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::removeOldDirectory() removing a root dir";
std::cerr << std::endl;
#endif
parent = root;
}
if (!parent) {
#ifdef FI_DEBUG
std::cerr << "FileIndex::removeOldDirectory() NULL parent";
std::cerr << std::endl;
#endif
return 0;
}
return parent -> removeOldDir(name, old);
}
int FileIndex::cleanOldEntries(time_t old) /* removes entries older than old */
{
std::map<std::string, DirEntry *>::iterator it;
for(it = root->subdirs.begin(); it != root->subdirs.end(); it++)
{
(it->second)->removeOldEntries(old, true);
}
return 1;
}
int FileIndex::printFileIndex(std::ostream &out)
{
out << "FileIndex::printFileIndex()" << std::endl;
root->print(out);
return 1;
}
int FileIndex::loadIndex(std::string filename, std::string expectedHash, uint64_t size)
{
std::ifstream file (filename.c_str(), std::ifstream::binary);
if (!file)
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::loadIndex error opening file: " << filename;
std::cerr << std::endl;
#endif
return 0;
}
/* load file into memory, close file */
char ibuf[512];
std::stringstream ss;
while(!file.eof())
{
file.read(ibuf, 512);
ss.write(ibuf, file.gcount());
}
file.close();
/* calculate hash */
unsigned char sha_buf[SHA_DIGEST_LENGTH];
SHA_CTX *sha_ctx = new SHA_CTX;
SHA1_Init(sha_ctx);
SHA1_Update(sha_ctx, ss.str().c_str(), ss.str().length());
SHA1_Final(&sha_buf[0], sha_ctx);
delete sha_ctx;
std::ostringstream tmpout;
for(int i = 0; i < SHA_DIGEST_LENGTH; i++)
{
tmpout << std::setw(2) << std::setfill('0') << std::hex << (unsigned int) (sha_buf[i]);
}
if (expectedHash != "" && expectedHash != tmpout.str())
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::loadIndex expected hash does not match" << std::endl;
std::cerr << "Expected hash: " << expectedHash << std::endl;
std::cerr << "Hash found: " << tmpout.str() << std::endl;
#endif
return 0;
}
DirEntry *ndir = NULL;
FileEntry *nfile = NULL;
std::list<DirEntry *> dirlist;
std::string word;
char ch;
while(ss.get(ch))
{
if (ch == '-')
{
ss.ignore(256, '\n');
switch(dirlist.size())
{
/* parse error: out of directory */
case 0:
{
#ifdef FI_DEBUG
std::cerr << "loadIndex error parsing saved file: " << filename;
std::cerr << " Ran out of dirs";
std::cerr << std::endl;
#endif
goto error;
}
/* finished parse, last dir is root */
case 1:
{
std::string pid = root -> id;
FileIndex::unregisterEntry((void*)root) ;
delete root; /* to clean up old entries */
root = new PersonEntry(pid);
registerEntry((void*)root) ;
/* shallow copy of all except id */
ndir = dirlist.back();
dirlist.pop_back(); /* empty list */
(*root) = (*ndir);
/* now cleanup (can't call standard delete) */
ndir->subdirs.clear();
ndir->files.clear();
FileIndex::unregisterEntry((void*)ndir) ;
delete ndir;
ndir = NULL;
/* must reset parent pointers now */
std::map<std::string, DirEntry *>::iterator it;
for(it = root->subdirs.begin();
it != root->subdirs.end(); it++)
{
(it->second)->parent = root;
}
break;
}
/* pop stack */
default: dirlist.pop_back(); ndir = dirlist.back();
}
continue;
}
// Ignore comments
else if (ch == '#')
{
ss.ignore(256, '\n');
}
else {
std::vector<std::string> tokens;
/* parse line */
while(1)
{
getline(ss, word, FILE_CACHE_SEPARATOR_CHAR);
if (ss.eof())
goto error;
tokens.push_back(word);
if (ss.peek() == '\n')
{
ss.ignore(256, '\n');
break;
}
}
/* create new file and add it to last directory*/
if (ch == 'f')
{
if (tokens.size() != 6)
{
#ifdef FI_DEBUG
std::cerr << "loadIndex error parsing saved file: " << filename;
std::cerr << " File token count wrong: " << tokens.size();
std::cerr << std::endl;
for(unsigned int i = 0; i < tokens.size(); i++)
{
std::cerr << "\tToken[" << i << "]:" << tokens[i];
std::cerr << std::endl;
}
#endif
goto error;
}
nfile = new FileEntry();
registerEntry((void*)nfile) ;
nfile->name = tokens[0];
nfile->hash = tokens[1];
nfile->size = atoll(tokens[2].c_str());
nfile->modtime = atoi(tokens[3].c_str());
nfile->pop = atoi(tokens[4].c_str());
nfile->updtime = atoi(tokens[5].c_str());
nfile->parent = ndir;
nfile->row = ndir->subdirs.size() + ndir->files.size();
ndir->files[nfile->name] = nfile;
}
/* create new dir and add to stack */
else if (ch == 'd')
{
if (tokens.size() != 6)
{
#ifdef FI_DEBUG
std::cerr << "loadIndex error parsing saved file: " << filename;
std::cerr << " Dir token count wrong: " << tokens.size();
std::cerr << std::endl;
#endif
goto error;
}
ndir = new DirEntry();
registerEntry((void*)ndir) ;
ndir->name = tokens[0];
ndir->path = tokens[1];
ndir->size = atoi(tokens[2].c_str());
ndir->modtime = atoi(tokens[3].c_str());
ndir->pop = atoi(tokens[4].c_str());
ndir->updtime = atoi(tokens[5].c_str());
if (!dirlist.empty())
{
ndir->parent = (dirlist.back());
ndir->row = dirlist.back()->subdirs.size();
dirlist.back()->subdirs[ndir->name] = ndir;
}
dirlist.push_back(ndir);
}
}
}
return 1;
/* parse error encountered */
error:
#ifdef FI_DEBUG
std::cerr << "loadIndex error parsing saved file: " << filename;
std::cerr << std::endl;
#endif
return 0;
}
int FileIndex::saveIndex(std::string filename, std::string &fileHash, uint64_t &size,const std::set<std::string>& forbidden_dirs)
{
unsigned char sha_buf[SHA_DIGEST_LENGTH];
std::string filenametmp = filename + ".tmp" ;
std::ofstream file (filenametmp.c_str(), std::ofstream::binary);
std::ostringstream oss;
if (!file)
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::saveIndex error opening file: " << filename;
std::cerr << std::endl;
#endif
return 0;
}
/* print version and header */
oss << "# FileIndex version 0.1" << std::endl;
oss << "# Dir: d name, path, parent, size, modtime, pop, updtime;" << std::endl;
oss << "# File: f name, hash, size, modtime, pop, updtime;" << std::endl;
oss << "#" << std::endl;
/* begin recusion */
root->writeDirInfo(oss) ;
std::map<std::string, DirEntry *>::iterator it;
for(it = root->subdirs.begin(); it != root->subdirs.end(); it++)
{
std::cout << "writting root directory: name=" << it->second->name << ", path=" << it->second->path << std::endl ;
if(forbidden_dirs.find(it->second->name) != forbidden_dirs.end())
std::cerr << " will be suppressed." << std::endl ;
else
{
std::cerr << " will be saved." << std::endl ;
(it->second)->saveEntry(oss);
}
}
root->writeFileInfo(oss) ; // this should never do anything
/* signal to pop directory from stack in loadIndex() */
oss << "-" << std::endl;
/* calculate sha1 hash */
SHA_CTX *sha_ctx = new SHA_CTX;
SHA1_Init(sha_ctx);
SHA1_Update(sha_ctx, oss.str().c_str(), oss.str().length());
SHA1_Final(&sha_buf[0], sha_ctx);
delete sha_ctx;
std::ostringstream tmpout;
for(int i = 0; i < SHA_DIGEST_LENGTH; i++)
{
tmpout << std::setw(2) << std::setfill('0') << std::hex << (unsigned int) (sha_buf[i]);
}
fileHash = tmpout.str();
/* finally, save to file */
file << oss.str();
/* get the size out */
size=file.tellp();
file.close();
// Use a temp file name so that the file is never half saved.
//
if(!RsDirUtil::renameFile(filenametmp,filename))
return false ;
return true;
}
std::string FixName(std::string in)
{
/* replace any , with _ */
for(unsigned int i = 0; i < in.length(); i++)
{
if (in[i] == FILE_CACHE_SEPARATOR_CHAR)
{
in[i] = '_';
}
}
return in;
}
void DirEntry::writeDirInfo(std::ostringstream& oss)
{
/* print node info */
oss << "d";
oss << FixName(name) << FILE_CACHE_SEPARATOR_CHAR ;
oss << FixName(path) << FILE_CACHE_SEPARATOR_CHAR ;
oss << size << FILE_CACHE_SEPARATOR_CHAR ;
oss << modtime << FILE_CACHE_SEPARATOR_CHAR ;
oss << pop << FILE_CACHE_SEPARATOR_CHAR ;
oss << updtime << FILE_CACHE_SEPARATOR_CHAR << std::endl;
}
void DirEntry::writeFileInfo(std::ostringstream& oss)
{
/* print file info */
std::map<std::string, FileEntry *>::iterator fit;
for(fit = files.begin(); fit != files.end(); fit++)
{
oss << "f";
oss << FixName((fit->second)->name) << FILE_CACHE_SEPARATOR_CHAR ;
oss << (fit->second)->hash << FILE_CACHE_SEPARATOR_CHAR ;
oss << (fit->second)->size << FILE_CACHE_SEPARATOR_CHAR ;
oss << (fit->second)->modtime << FILE_CACHE_SEPARATOR_CHAR ;
oss << (fit->second)->pop << FILE_CACHE_SEPARATOR_CHAR ;
oss << (fit->second)->updtime << FILE_CACHE_SEPARATOR_CHAR << std::endl;
}
}
/* recusive function for traversing the dir tree in preorder */
int DirEntry::saveEntry(std::ostringstream &oss)
{
writeDirInfo(oss) ;
std::map<std::string, DirEntry *>::iterator it;
for(it = subdirs.begin(); it != subdirs.end(); it++)
{
(it->second)->saveEntry(oss);
}
writeFileInfo(oss) ;
/* signal to pop directory from stack in loadIndex() */
oss << "-" << std::endl;
return 1;
}
int FileIndex::searchHash(std::string hash, std::list<FileEntry *> &results) const
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::searchHash(" << hash << ")";
std::cerr << std::endl;
#endif
DirEntry *ndir = NULL;
std::list<DirEntry *> dirlist;
dirlist.push_back(root);
while(!dirlist.empty())
{
ndir = dirlist.back();
dirlist.pop_back();
/* add subdirs to stack */
std::map<std::string, DirEntry *>::iterator it;
for(it = ndir->subdirs.begin(); it != ndir->subdirs.end(); it++)
{
dirlist.push_back(it->second);
}
std::map<std::string, FileEntry *>::iterator fit;
/* search in current dir */
for(fit = ndir->files.begin(); fit != ndir->files.end(); fit++)
{
if (hash == (fit->second)->hash)
{
results.push_back(fit->second);
#ifdef FI_DEBUG
std::cerr << "FileIndex::searchHash(" << hash << ")";
std::cerr << " found: " << fit->second->name;
std::cerr << std::endl;
#endif
}
}
}
return 0;
}
int FileIndex::searchTerms(std::list<std::string> terms, std::list<FileEntry *> &results) const
{
DirEntry *ndir = NULL;
std::list<DirEntry *> dirlist;
dirlist.push_back(root);
/* iterators */
std::map<std::string, DirEntry *>::iterator it;
std::map<std::string, FileEntry *>::iterator fit;
std::list<std::string>::const_iterator iter;
while(!dirlist.empty())
{
ndir = dirlist.back();
dirlist.pop_back();
for(it = ndir->subdirs.begin(); it != ndir->subdirs.end(); it++)
{
dirlist.push_back(it->second);
}
for (iter = terms.begin(); iter != terms.end(); iter ++) {
std::string::const_iterator it2;
const std::string &str1 = ndir->name;
const std::string &str2 = *iter;
it2 = std::search(str1.begin(), str1.end(), str2.begin(), str2.end(), CompareCharIC());
if (it2 != str1.end()) {
/* first search to see if its parent is in the results list */
bool addDir = true;
for (std::list<FileEntry *>::iterator rit(results.begin()); rit != results.end() && addDir; rit ++) {
DirEntry *de = dynamic_cast<DirEntry *>(*rit);
if (de && (de == root))
continue;
if (de && (de == ndir->parent))
addDir = false;
}
if (addDir) {
results.push_back((FileEntry *) ndir);
break;
}
}
}
for(fit = ndir->files.begin(); fit != ndir->files.end(); fit++)
{
/* cycle through terms */
for(iter = terms.begin(); iter != terms.end(); iter++)
{
/* always ignore case */
std::string::const_iterator it2 ;
const std::string &str1 = fit->second->name;
const std::string &str2 = (*iter);
it2 = std::search( str1.begin(), str1.end(),
str2.begin(), str2.end(), CompareCharIC() );
if (it2 != str1.end())
{
results.push_back(fit->second);
break;
}
/* original case specific term search ******
if (fit->second->name.find(*iter) != std::string::npos)
{
results.push_back(fit->second);
break;
}
************/
}
}
} //while
return 0;
}
int FileIndex::searchBoolExp(Expression * exp, std::list<FileEntry *> &results) const
{
DirEntry *ndir = NULL;
std::list<DirEntry *> dirlist;
dirlist.push_back(root);
/* iterators */
std::map<std::string, DirEntry *>::iterator it;
std::map<std::string, FileEntry *>::iterator fit;
std::list<std::string>::const_iterator iter;
while(!dirlist.empty())
{
ndir = dirlist.back();
dirlist.pop_back();
for(it = ndir->subdirs.begin(); it != ndir->subdirs.end(); it++)
{
dirlist.push_back(it->second);
}
for(fit = ndir->files.begin(); fit != ndir->files.end(); fit++)
{
/*Evaluate the boolean expression and add it to the results if its true*/
bool ret = exp->eval(fit->second);
if (ret == true){
results.push_back(fit->second);
}
}
} //while
return 0;
}
bool FileIndex::extractData(void *ref,DirDetails& details)
{
if(!isValid(ref))
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::RequestDirDetails() asked for an invalid pointer " << (void*)ref << std::endl;
#endif
return false ;
}
FileEntry *file = static_cast<FileEntry *>(ref);
DirEntry *dir = dynamic_cast<DirEntry *>(file);
details.children = std::list<DirStub>() ;
if (dir!=NULL) /* has children --- fill */
{
#ifdef FI_DEBUG
std::cerr << "FileIndex::RequestDirDetails() ref=dir" << std::endl;
#endif
/* extract all the entries */
for(std::map<std::string,DirEntry*>::const_iterator dit(dir->subdirs.begin()); dit != dir->subdirs.end(); ++dit)
{
DirStub stub;
stub.type = DIR_TYPE_DIR;
stub.name = (dit->second) -> name;
stub.ref = (dit->second);
details.children.push_back(stub);
}
for(std::map<std::string,FileEntry*>::const_iterator fit(dir->files.begin()); fit != dir->files.end(); ++fit)
{
DirStub stub;
stub.type = DIR_TYPE_FILE;
stub.name = (fit->second) -> name;
stub.ref = (fit->second);
details.children.push_back(stub);
}
if(dir->parent == NULL)
details.type = DIR_TYPE_PERSON ;
else
details.type = DIR_TYPE_DIR;
details.hash = "";
details.count = dir->subdirs.size() + dir->files.size();
}
else
{
#ifdef FI_DEBUG
std::cerr << "FileIndexStore::RequestDirDetails() ref=file" << std::endl;
#endif
details.type = DIR_TYPE_FILE;
details.count = file->size;
}
#ifdef FI_DEBUG
std::cerr << "FileIndexStore::RequestDirDetails() name: " << file->name << std::endl;
#endif
details.ref = file;
details.hash = file->hash;
details.age = time(NULL) - file->modtime;
details.flags = 0;//file->pop;
/* find parent pointer, and row */
details.parent = file->parent ;
details.prow = (file->parent==NULL)?0:file->parent->row ;
if(details.type == DIR_TYPE_DIR)
{
details.name = file->name;
details.path = dir->path;
}
else
{
details.name = file->name;
details.path = (file->parent==NULL)?"":file->parent->path;
}
/* find peer id */
FileEntry *f ;
for(f=file;f->parent!=NULL;f=f->parent) ;
details.id = dynamic_cast<PersonEntry*>(f)->id;
#ifdef FI_DEBUG
assert(details.parent != details.ref) ;
std::cout << "details: ref=" << (void*)ref << ", prow=" << details.prow << ", parent=" << (void*)details.parent << ", children=" ;
for(std::list<DirStub>::iterator it(details.children.begin());it!=details.children.end();++it)
std::cout << " " << (void*)it->ref ;
std::cout << std::endl ;
#endif
return true;
}