libopkg/pkg_extract.c

   1 /* pkg_extract.c - the opkg package management system
   2
   3    Carl D. Worth
   4
   5    Copyright (C) 2001 University of Southern California
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include <stdio.h>
  19
  20 #include "pkg_extract.h"
  21 #include "libbb/libbb.h"
  22 #include "file_util.h"
  23 #include "sprintf_alloc.h"
  24
  25 int
  26 pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
  27 {
  28         int err;
  29         deb_extract(pkg->local_filename, stream,
  30                         extract_control_tar_gz
  31                         | extract_to_stream,
  32                         NULL, "control", &err);
  33         return err;
  34 }
  35
  36 int
  37 pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg, const char *dir,
  38                 const char *prefix)
  39 {
  40         int err;
  41         char *dir_with_prefix;
  42
  43         sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
  44
  45         deb_extract(pkg->local_filename, stderr,
  46                         extract_control_tar_gz
  47                         | extract_all_to_fs| extract_preserve_date
  48                         | extract_unconditional,
  49                         dir_with_prefix, NULL, &err);
  50
  51         free(dir_with_prefix);
  52         return err;
  53 }
  54
  55 int
  56 pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
  57 {
  58         return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
  59 }
  60
  61
  62 int
  63 pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
  64 {
  65         int err;
  66
  67         deb_extract(pkg->local_filename, stderr,
  68                 extract_data_tar_gz
  69                 | extract_all_to_fs| extract_preserve_date
  70                 | extract_unconditional,
  71                 dir, NULL, &err);
  72
  73         return err;
  74 }
  75
  76 int
  77 pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *stream)
  78 {
  79         int err;
  80
  81     /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
  82        data file names with a '.' as the first character. I've taught
  83        opkg how to cope with the presence or absence of the '.', but
  84        this may trip up dpkg.
  85
  86        For all I know, this could actually be a bug in opkg-build. So,
  87        I'll have to try installing some .debs and comparing the *.list
  88        files.
  89
  90        If we wanted to, we could workaround the deb_extract behavior
  91        right here, by writing to a tmpfile, then munging things as we
  92        wrote to the actual stream. */
  93
  94         deb_extract(pkg->local_filename, stream,
  95                 extract_quiet | extract_data_tar_gz | extract_list,
  96                 NULL, NULL, &err);
  97
  98         return err;
  99 }