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 "includes.h"
  19 #include <errno.h>
  20
  21 #include "pkg_extract.h"
  22
  23 #include "libbb/libbb.h"
  24 #include "file_util.h"
  25 #include "sprintf_alloc.h"
  26
  27 int
  28 pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
  29 {
  30         int err;
  31         deb_extract(pkg->local_filename, stream,
  32                         extract_control_tar_gz
  33                         | extract_to_stream,
  34                         NULL, "./control", &err);
  35
  36         return err;
  37 }
  38
  39 int
  40 pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg, const char *dir,
  41                 const char *prefix)
  42 {
  43         int err;
  44         char *dir_with_prefix;
  45
  46         sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
  47
  48         deb_extract(pkg->local_filename, stderr,
  49                         extract_control_tar_gz
  50                         | extract_all_to_fs| extract_preserve_date
  51                         | extract_unconditional,
  52                         dir_with_prefix, NULL, &err);
  53
  54         free(dir_with_prefix);
  55         return err;
  56 }
  57
  58 int
  59 pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
  60 {
  61         return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
  62 }
  63
  64
  65 int
  66 pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
  67 {
  68         int err;
  69
  70         deb_extract(pkg->local_filename, stderr,
  71                 extract_data_tar_gz
  72                 | extract_all_to_fs| extract_preserve_date
  73                 | extract_unconditional,
  74                 dir, NULL, &err);
  75
  76         return err;
  77 }
  78
  79 int
  80 pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *stream)
  81 {
  82         int err;
  83
  84     /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
  85        data file names with a '.' as the first character. I've taught
  86        opkg how to cope with the presence or absence of the '.', but
  87        this may trip up dpkg.
  88
  89        For all I know, this could actually be a bug in opkg-build. So,
  90        I'll have to try installing some .debs and comparing the *.list
  91        files.
  92
  93        If we wanted to, we could workaround the deb_extract behavior
  94        right here, by writing to a tmpfile, then munging things as we
  95        wrote to the actual stream. */
  96
  97         deb_extract(pkg->local_filename, stream,
  98                 extract_quiet | extract_data_tar_gz | extract_list,
  99                 NULL, NULL, &err);
 100
 101         return err;
 102 }