int main (int argc, char *argv[])
{
int i,r;
Extractor *ext;
if(argc<2){
cout << "Usage: program <debian packadge> [<debian packadge>]" << endl;
return 1;
}
for(i=1;i<argc;i++){ //multiple inputs
r=0;
ext = new Extractor();
/*
* this prints to standard out name of debian packadge
* Note: if it's non-debian packadge, then program will end at first
* check of content of Ar archive and clean
*/
cout << argv[1] << endl;
ext->setSource(argv[i]);
r = ext->loadUnpackArchive(0);
if (r!=0){
/*
* if error occurs inform user
*/
cout << "Error in extracting debian type archive!" <<endl;
cout << "Purging new files end directories it they are created..." << endl;
cout << ext->getParent() << endl;
ext->deleteDirectoryRmR(ext->getParent());
cout << "Task is done.Exiting." << endl;
delete(ext);
return 1;
}else cout << "Extracted!" << endl;
/*
* if all is ok inform user
*/
delete(ext);
/*
* before continuing loading another archive environment path must be the initial path
*/
chdir("../");
}
return 0;
}
/*
* This method is "universal" extractor modified for debian packadges
*/
int loadUnpackArchive(int deb){
Extractor *secondExtractor;
int flags,i,code=0;
const char *filename;
this->ar = archive_read_new();
archive_read_support_format_all(this->ar);
archive_read_support_compression_all(this->ar);
r = archive_read_open_filename(this->ar, this->filename, 10240);
if (r != ARCHIVE_OK)
return 1;
flags = ARCHIVE_EXTRACT_TIME;
flags |= ARCHIVE_EXTRACT_PERM;
flags |= ARCHIVE_EXTRACT_ACL;
flags |= ARCHIVE_EXTRACT_FFLAGS;
/*
* with another archive files and folders will be written to root folder
*/
this->createSetWorkingDir();
this->ext = archive_write_disk_new();
archive_write_disk_set_options(this->ext, flags);
archive_write_disk_set_standard_lookup(this->ext);
i=0;
while (archive_read_next_header(this->ar, &entry) == ARCHIVE_OK) {
/*
* while ar archive has files (its normal to be 3, and first is always debian-binary
* second and third must bi control and data
* othervise it isn't debian packadge
*/
if(deb==0 && i==3) return 1;
filename = archive_entry_pathname(entry);
if(deb==0 && i==0 && strcmp("debian-binary",filename)!=0) return -1;
this->newfilename = this->setFilename(filename,deb);
if (deb==0 && i>0){
this->files.push_back(string(this->newfilename));
}
if (archive_entry_size(entry) > 0) {
r = archive_write_header(this->ext, entry);
if (r != ARCHIVE_OK)
return 1;
r = this->copy_data();
if (r!=0) return r;
this->deleteNameFilename();
}
i++;
}
r = archive_read_close(this->ar);
if (r != ARCHIVE_OK)
return 1;
r = archive_write_finish_entry(ext);
archive_write_close(ext);
if (deb==0 && this->files.size()>0){
/*
* here are two recursve calls to extract other two subarchives
* previously extracted from ar archive.
* Because gouping into folders is needed, environment location
* is changing with createSetWorkingDir() above and with chdir()
* after extraction
*/
for(vector< string >::iterator iter = this->files.begin();iter<this->files.end();iter++){
secondExtractor = new Extractor();
secondExtractor->setSource((char *)(*iter).c_str());
/*
* Checking that control and data exist
*/
if(((*iter).substr(0,(*iter).find('.'))).compare("data")!=0){
code=code+3;
}else if(((*iter).substr(0,(*iter).find('.'))).compare("control")!=0){
code=code+5;
}else{
code=10; //any number bigger than 5+3
}
if(iter==this->files.end()-1 && code!=8){ //if third file in ar archive is now check this rule
return 1;
}
r = secondExtractor->loadUnpackArchive(1);
delete(secondExtractor);
chdir("../");
remove_all((*iter).c_str());
if (r!=0) return 1;
}
}
return 0;
};
