pkgutil.h

   1 //
   2 //  pkgutils
   3 //
   4 //  Copyright (c) 2000-2005 Per Liden
   5 //
   6 //  This program is free software; you can redistribute it and/or modify
   7 //  it under the terms of the GNU General Public License as published by
   8 //  the Free Software Foundation; either version 2 of the License, or
   9 //  (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 //  USA.
  20 //
  21
  22 #ifndef PKGUTIL_H
  23 #define PKGUTIL_H
  24
  25 #include <string>
  26 #include <set>
  27 #include <map>
  28 #include <iostream>
  29 #include <stdexcept>
  30 #include <cerrno>
  31 #include <cstring>
  32 #include <sys/types.h>
  33 #include <dirent.h>
  34
  35 #define PKG_EXT         ".pkg.tar.gz"
  36 #define PKG_DIR         "var/lib/pkg"
  37 #define PKG_DB          "var/lib/pkg/db"
  38 #define PKG_REJECTED    "var/lib/pkg/rejected"
  39 #define VERSION_DELIM   '#'
  40 #define LDCONFIG        "/sbin/ldconfig"
  41 #define LDCONFIG_CONF   "/etc/ld.so.conf"
  42
  43 using namespace std;
  44
  45 class pkgutil {
  46 public:
  47         struct pkginfo_t {
  48                 string version;
  49                 set<string> files;
  50         };
  51
  52         typedef map<string, pkginfo_t> packages_t;
  53
  54         explicit pkgutil(const string& name);
  55         virtual ~pkgutil() {}
  56         virtual void run(int argc, char** argv) = 0;
  57         virtual void print_help() const = 0;
  58         void print_version() const;
  59
  60 protected:
  61         // Database
  62         void db_open(const string& path);
  63         void db_commit();
  64         void db_add_pkg(const string& name, const pkginfo_t& info);
  65         bool db_find_pkg(const string& name);
  66         void db_rm_pkg(const string& name);
  67         void db_rm_pkg(const string& name, const set<string>& keep_list);
  68         void db_rm_files(set<string> files, const set<string>& keep_list);
  69         set<string> db_find_conflicts(const string& name, const pkginfo_t& info);
  70
  71         // Tar.gz
  72         pair<string, pkginfo_t> pkg_open(const string& filename) const;
  73         void pkg_install(const string& filename, const set<string>& keep_list, const set<string>& non_install_files) const;
  74         void pkg_footprint(string& filename) const;
  75         void ldconfig() const;
  76
  77         string utilname;
  78         packages_t packages;
  79         string root;
  80 };
  81
  82 class db_lock {
  83 public:
  84         db_lock(const string& root, bool exclusive);
  85         ~db_lock();
  86 private:
  87         DIR* dir;
  88 };
  89
  90 class runtime_error_with_errno : public runtime_error {
  91 public:
  92         explicit runtime_error_with_errno(const string& msg) throw()
  93                 : runtime_error(msg + string(": ") + strerror(errno)) {}
  94         explicit runtime_error_with_errno(const string& msg, int e) throw()
  95                 : runtime_error(msg + string(": ") + strerror(e)) {}
  96 };
  97
  98 // Utility functions
  99 void assert_argument(char** argv, int argc, int index);
 100 string itos(unsigned int value);
 101 string mtos(mode_t mode);
 102 string trim_filename(const string& filename);
 103 bool file_exists(const string& filename);
 104 bool file_empty(const string& filename);
 105 bool file_equal(const string& file1, const string& file2);
 106 bool permissions_equal(const string& file1, const string& file2);
 107 void file_remove(const string& basedir, const string& filename);
 108
 109 #endif /* PKGUTIL_H */