pkgrm.cc



    1 //
    2 //  pkgutils
    3 // 
    4 //  Copyright (c) 2000-2005 Per Liden
    5 //  Copyright (c) 2006-2021 by CRUX team (http://crux.nu)
    6 // 
    7 //  This program is free software; you can redistribute it and/or modify
    8 //  it under the terms of the GNU General Public License as published by
    9 //  the Free Software Foundation; either version 2 of the License, or
   10 //  (at your option) any later version.
   11 //
   12 //  This program is distributed in the hope that it will be useful,
   13 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
   14 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15 //  GNU General Public License for more details.
   16 //
   17 //  You should have received a copy of the GNU General Public License
   18 //  along with this program; if not, write to the Free Software
   19 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
   20 //  USA.
   21 //
   22 
   23 #include "pkgrm.h"
   24 #include <unistd.h>
   25 
   26 void pkgrm::run(int argc, char** argv)
   27 {
   28 	//
   29 	// Check command line options
   30 	//
   31 	string o_package;
   32 	string o_root;
   33 
   34 	for (int i = 1; i < argc; i++) {
   35 		string option(argv[i]);
   36 		if (option == "-r" || option == "--root") {
   37 			assert_argument(argv, argc, i);
   38 			o_root = argv[i + 1];
   39 			i++;
   40 		} else if (option[0] == '-' || !o_package.empty()) {
   41 			throw runtime_error("invalid option " + option);
   42 		} else {
   43 			o_package = option;
   44 		}
   45 	}
   46 
   47 	if (o_package.empty())
   48 		throw runtime_error("option missing");
   49 
   50 	//
   51 	// Check UID
   52 	//
   53 	if (getuid())
   54 		throw runtime_error("only root can remove packages");
   55 
   56 	//
   57 	// Remove package
   58 	//
   59 	{
   60 		db_lock lock(o_root, true);
   61 		db_open(o_root);
   62 
   63 		if (!db_find_pkg(o_package))
   64 			throw runtime_error("package " + o_package + " not installed");
   65 
   66 		db_rm_pkg(o_package);
   67 		ldconfig();
   68 		db_commit();
   69 	}
   70 }
   71 
   72 void pkgrm::print_help() const
   73 {
   74 	cout << "usage: " << utilname << " [options] <package>" << endl
   75 	     << "options:" << endl
   76 	     << "  -r, --root <path>   specify alternative installation root" << endl
   77 	     << "  -v, --version       print version and exit" << endl
   78 	     << "  -h, --help          print help and exit" << endl;
   79 }