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#include <qapplication.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qdir.h>
#include <qtextstream.h>
#include <qstringlist.h>
#include <stdlib.h>
#include <unistd.h> //symlink()
#include <sys/stat.h> // mkdir()
#include <sys/vfs.h>
#include <mntent.h>
static const char *listDir = "/usr/lib/ipkg/externinfo/";
static void createSymlinks( const QString &location, const QString &package )
{
QFile inFile( location + "/usr/lib/ipkg/info/" + package + ".list" );
mkdir( "/usr/lib/ipkg", 0777 );
mkdir( listDir, 0777 );
QFile outFile( listDir + package + ".list");
//qDebug( "createSymlinks %s -> %s", inFile.name().ascii(), outFile.name().ascii() );
if ( inFile.open(IO_ReadOnly) && outFile.open(IO_WriteOnly)) {
QTextStream in(&inFile);
QTextStream out(&outFile);
QString s;
while ( !in.eof() ) { // until end of file...
s = in.readLine(); // line of text excluding '\n'
//qDebug( "Read: %s", s.ascii() );
// for s, do link/mkdir.
if ( s.right(1) == "/" ) {
//qDebug("do mkdir for %s", s.ascii());
mkdir( s.ascii(), 0777 );
//possible optimization: symlink directories
//that don't exist already. -- Risky.
} else {
//qDebug("do symlink for %s", s.ascii());
QFileInfo ffi( s );
//Don't try to symlink if a regular file exists already
if ( !ffi.exists() || ffi.isSymLink() ) {
symlink( (location+s).ascii(), s.ascii() );
// qDebug ( "Created %s" ,s.ascii() );
out << s << "\n";
} //else {
// qDebug( "%s exists already, not symlinked", s.ascii() );
// }
}
}
inFile.close();
outFile.close();
}
}
static void removeSymlinks( const QString &package )
{
QFile inFile( listDir + package + ".list" );
if ( inFile.open(IO_ReadOnly) ) {
QTextStream in(&inFile);
QString s;
while ( !in.eof() ) { // until end of file...
s = in.readLine(); // line of text excluding '\n'
//qDebug("remove symlink %s", s.ascii());
QFileInfo ffi( s );
//Confirm that it's still a symlink.
if ( ffi.isSymLink() )
unlink( s.ascii() );
// qDebug ( "Removed %s", s.ascii() );
// else
// qDebug( "Not removed %s", s.ascii() );
}
inFile.close();
inFile.remove();
}
}
/*
Slightly hacky: we can't use StorageInfo, since we don't have a
QApplication. We look for filesystems that have the directory
/usr/lib/ipkg/info, and assume that they are removable media
with packages installed. This is safe even if eg. /usr is on a
separate filesystem, since then we would be testing for
/usr/usr/lib/ipkg/info, which should not exist. (And if it
does they deserve to have it treated as removable.)
*/
static void updateSymlinks()
{
QDir lists( listDir );
QStringList knownPackages = lists.entryList( "*.list" ); // No tr
struct mntent *me;
FILE *mntfp = setmntent( "/etc/mtab", "r" );
if ( mntfp ) {
while ( (me = getmntent( mntfp )) != 0 ) {
QString root = me->mnt_dir;
if ( root == "/" )
continue;
QString info = root + "/usr/lib/ipkg/info";
QDir infoDir( info );
//qDebug( "looking at %s", info.ascii() );
if ( infoDir.isReadable() ) {
const QFileInfoList *packages = infoDir.entryInfoList( "*.list" ); // No tr
QFileInfoListIterator it( *packages );
QFileInfo *fi;
while (( fi = *it )) {
++it;
if ( knownPackages.contains( fi->fileName() ) ) {
//qDebug( "found %s and we've seen it before", fi->fileName().latin1() );
knownPackages.remove( fi->fileName() );
} else {
//it's a new one
createSymlinks( root, fi->baseName() );
}
}
}
}
endmntent( mntfp );
}
for ( QStringList::Iterator it = knownPackages.begin();
it != knownPackages.end(); ++it ) {
// strip ".info" off the end.
removeSymlinks( (*it).left((*it).length()-5) );
}
}
int main( int argc, char *argv[] )
{
QApplication a( argc, argv, QApplication::Tty );
QString command = argc > 1 ? argv[1] : "update"; // No tr
if ( command == "update" ) // No tr
updateSymlinks();
else if ( command == "create" && argc > 3 ) // No tr
createSymlinks( argv[2], argv[3] );
else if ( command == "remove" && argc > 2 ) // No tr
removeSymlinks( argv[2] );
else
qWarning( "Argument error" );
}
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