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/*
* fileProvider.cpp
*
* Created on: 15.11.2012
* Author: savop
*/
#include <plugin.h>
#include <tools/string.h>
#include <pwd.h>
#include <unistd.h>
using namespace std;
namespace upnp {
class FileProvider : public cUPnPResourceProvider {
private:
StringMap directoryMap;
FILE* fileFD;
bool Parse(const string& line){
int pos;
if((pos = line.find_first_of(':')) != string::npos){
directoryMap[tools::Trim(line.substr(0,pos))] = tools::Trim(line.substr(pos+1));
}
return true;
}
bool GetFileStat(const string& uri, struct stat& fileStat){
struct stat s;
if(stat(GetFile(uri).c_str(), &s) == 0){
fileStat = s;
return true;
}
return false;
}
public:
FileProvider()
: fileFD(NULL)
{
LoadConfigFile("directories.conf");
}
virtual string ProvidesSchema() { return "file"; }
virtual string GetRootContainer() {
return ProvidesSchema() + "://";
}
virtual bool IsContainer(const string& uri) {
struct stat fileStat;
if(GetRootContainer().compare(uri) == 0 || (GetFileStat(uri, fileStat) && S_ISDIR(fileStat.st_mode)))
return true;
return false;
}
virtual bool IsLink(const string& uri, string& target) {
struct stat fileStat;
if(GetFileStat(uri, fileStat) && S_ISLNK(fileStat.st_mode)) return true;
return false;
}
virtual long GetContainerUpdateId(const string& uri) {
struct stat fileStat;
if(GetFileStat(uri, fileStat)){
return std::max<time_t>(fileStat.st_ctim.tv_sec, fileStat.st_mtim.tv_sec);
}
return 0;
}
virtual StringList GetContainerEntries(const string& uri) {
StringList list;
if(!HasRootContainer(uri)) return list;
DIR* dirHandle;
struct dirent* dirEntry;
if(GetRootContainer().compare(uri) == 0){
for( StringMap::iterator it = directoryMap.begin(); it != directoryMap.end(); ++it ) {
list.push_back( it->first + "/" );
}
} else {
if((dirHandle = opendir(GetFile(uri).c_str())) == NULL){
return list;
}
string filename;
while ((dirEntry = readdir(dirHandle)) != NULL) {
filename = dirEntry->d_name;
if( filename.compare(".") != 0 && filename.compare("..") != 0 ) {
if(dirEntry->d_type == DT_DIR) {
filename += "/";
}
list.push_back(filename);
}
}
closedir(dirHandle);
}
return list;
}
virtual bool GetMetadata(const string& uri, cMetadata& metadata){
if(!HasRootContainer(uri)) return false;
if(!cUPnPResourceProvider::GetMetadata(uri, metadata)) return false;
if(GetRootContainer().compare(uri) == 0){
metadata.SetProperty(cMetadata::Property(property::object::KEY_TITLE, string("File system")));
metadata.SetProperty(cMetadata::Property(property::object::KEY_DESCRIPTION, string("Access files on the file system")));
}
struct passwd *pw;
if((pw = getpwuid(getuid())) == NULL){
metadata.SetProperty(cMetadata::Property(property::object::KEY_CREATOR, string("Klaus Schmidinger")));
} else {
string name(pw->pw_gecos); name = name.substr(0,name.find(",,,",0));
metadata.SetProperty(cMetadata::Property(property::object::KEY_CREATOR, name));
}
return true;
}
virtual bool Seekable() const {
return true;
}
virtual string GetFile(const string& uri){
if(!HasRootContainer(uri)) return string();
string mountPoint = uri.substr(7, uri.find_first_of('/',7) - 7);
string file;
if(!mountPoint.empty() && !directoryMap[mountPoint].empty()){
file = directoryMap[mountPoint];
if(uri.find_first_of('/', 7) != string::npos)
file += uri.substr(uri.find_first_of('/',7));
}
return file;
}
virtual bool Open(const string& uri) {
if(fileFD)
Close();
string file = GetFile(uri);
fileFD = fopen(file.c_str(), "r");
return (fileFD) ? true : false;
}
virtual size_t Read(char* buf, size_t bufLen) {
if(!fileFD) return 0;
return fread(buf, 1, bufLen, fileFD);
}
virtual bool Seek(size_t offset, int origin) {
if(!fileFD) return 0;
return fseek(fileFD, offset, origin) == 0;
}
virtual void Close() {
if(fileFD){
fclose(fileFD);
fileFD = NULL;
}
}
};
UPNP_REGISTER_RESOURCE_PROVIDER(FileProvider);
}
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