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
  34         return err;
  35 }
  36
  37 int
  38 pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg, const char *dir,
  39                 const char *prefix)
  40 {
  41         int err;
  42         char *dir_with_prefix;
  43
  44         sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
  45
  46         deb_extract(pkg->local_filename, stderr,
  47                         extract_control_tar_gz
  48                         | extract_all_to_fs| extract_preserve_date
  49                         | extract_unconditional,
  50                         dir_with_prefix, NULL, &err);
  51
  52         free(dir_with_prefix);
  53         return err;
  54 }
  55
  56 int
  57 pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
  58 {
  59         return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
  60 }
  61
  62
  63 int
  64 pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
  65 {
  66         int err;
  67
  68         deb_extract(pkg->local_filename, stderr,
  69                 extract_data_tar_gz
  70                 | extract_all_to_fs| extract_preserve_date
  71                 | extract_unconditional,
  72                 dir, NULL, &err);
  73
  74         return err;
  75 }
  76
  77 int
  78 pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *stream)
  79 {
  80         int err;
  81
  82     /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
  83        data file names with a '.' as the first character. I've taught
  84        opkg how to cope with the presence or absence of the '.', but
  85        this may trip up dpkg.
  86
  87        For all I know, this could actually be a bug in opkg-build. So,
  88        I'll have to try installing some .debs and comparing the *.list
  89        files.
  90
  91        If we wanted to, we could workaround the deb_extract behavior
  92        right here, by writing to a tmpfile, then munging things as we
  93        wrote to the actual stream. */
  94
  95         deb_extract(pkg->local_filename, stream,
  96                 extract_quiet | extract_data_tar_gz | extract_list,
  97                 NULL, NULL, &err);
  98
  99         return err;
 100 }