VFS_passwd.cpp

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#include "VFS_passwd.h"
#include "VFS.h"
 
#include <QCryptographicHash>
#include <QFile>
 
VFS_passwd::VFS_passwd(QString passwdFile)
: VFS_auth()
, _passwordFile(passwdFile)
{
}
 
VFS_passwd::~VFS_passwd()
{
}
 
void VFS_passwd::read(VFS_request *r)
{
        QJsonObject d = r->_data.object();
 
        bool auth = r->_path == "";     //if the path is empty we're authenticating.  Otherwise we're just reading the data.
 
        QString user = auth ? d["username"].toString("") : r->_path;
        QString pass = d["password"].toString("");
        //QString hash = auth ? QCryptographicHash::hash(pass.toLocal8Bit(),QCryptographicHash::Md5).toHex() : "[0-9A-F]+";
        QString hash = auth ? QCryptographicHash::hash(pass.toUtf8(),QCryptographicHash::Md5).toHex() : "[0-9A-F]+";
 
        QFile passwd(_passwordFile);
        if (!passwd.open(QIODevice::ReadOnly | QIODevice::Text))
        {
                r->_reason = QString("(read) Unable to open passwd file: '%1'\nAborting.").arg(_passwordFile);
                r->_success = false;
                return;
        }
 
        QRegExp prx( QString("%1 %2 ?(\\d*) ?\"?([^\"]*)\"?\\s?([^\\s]*)\n").arg(user).arg(hash), Qt::CaseInsensitive );
        while (!passwd.atEnd())
        {
                QString line( passwd.readLine() );
                //printf("MATCH: %s  ||  %s\n",qUtf8Printable(line),qUtf8Printable(prx.pattern()));
                if (prx.exactMatch(line))
                {
                        //printf("captured: %s\n",qUtf8Printable( prx.capturedTexts().join("\n") ));
                        int c = prx.capturedTexts().length();
 
                        d["username"] = user;
                        d["uidnumber"] = c > 1 ? prx.cap(1).toInt() : 0;
                        d["realname"] = c > 2 && prx.cap(2).size() ? prx.cap(2) : user;
                        d["groups"] = (c > 3) ? QJsonArray::fromStringList(prx.cap(3).split(",")) : QJsonArray();
 
                        //d["type"] = type;
                        //d["authpath"] = d["authpath"];
                        //d["parameters"] = d["parameters"];
 
                        r->_data.setObject(d);
                        r->_success = true;
                        return;
                }
        }
 
        //VFS::ERROR( QString("Authentication failed for user '%1:%2'").arg(user).arg(pass), 0, "passwd" );
        //VFS::ERROR( QString("Authentication failed for user '%1'").arg(user), 0, "passwd" );
 
        r->_success = false;
}
 
 
void VFS_passwd::ls(VFS_request *r)
{
        //printf("passwd LS\n");
 
        QFile passwd(_passwordFile);
        if (!passwd.open(QIODevice::ReadOnly | QIODevice::Text))
        {
                r->_reason = QString("(ls) Unable to open passwd file: '%1'\nAborting.").arg(_passwordFile);
                r->_success = false;
                return;
        }
 
        QJsonObject o;
 
        QRegExp prx( QString("([^\\s]*) ([^\\s]*) ?(\\d*) ?\"?([^\"]*)\"?\\s?([^\\s]*)\n") );
        while (!passwd.atEnd())
        {
                QString line( passwd.readLine() );
                //printf("MATCH: %s  ||  %s\n",qUtf8Printable(line),qUtf8Printable(prx.pattern()));
                if (prx.exactMatch(line))
                {
                        //printf("captured %d: %s\n",prx.captureCount(),qUtf8Printable( prx.capturedTexts().join("\n") ));
                        int c = prx.capturedTexts().length();
 
                        switch(c)
                        {
                                case 6:
                                case 5:
                                case 4:         {
                                                        QString username = prx.cap(1);
                                                        o[username] = QJsonObject { { "username", username }, { "uidnumber", prx.cap(3).toInt() }, { "realname", prx.cap(4).trimmed().size() ? prx.cap(4) : username } };
                                                        break;
                                                }
 
                                case 3:         {       QString username = prx.cap(1);
                                                        o[username] = QJsonObject { { "username", username }, { "uidnumber", prx.cap(3).toInt() }, { "realname", username } };
                                                        break;
                                                }
 
                                case 2:         {       QString username = prx.cap(1);
                                                        o[username] = QJsonObject { { "username", username }, { "uidnumber", 0 }, { "realname", username } };
                                                        break;
                                                }
 
                                case 1:
                                default:        break;  //don't add the bad line
                        }
 
                        //if (c>=4)
                        //{
                        //      QString username = prx.cap(1);
                        //      o[username] = QJsonObject { { "username", username }, { "uidnumber", prx.cap(3).toInt() }, { "realname", prx.cap(4).trimmed().size() ? prx.cap(4) : username } };
                        //}
                }
        }
 
        QJsonObject u = r->_data.object();      //add to the previous object, don't replace it
        //u["passwd"] = o;
        u[r->_initialPath] = o;
 
        r->_data.setObject(u);
        r->_success = true;
}
 
QString VFS_passwd::reportDetails()
{
        return _passwordFile;
}