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 /* assuage libb functions */
  28 const char *applet_name = "opkg";
  29
  30 int
  31 pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
  32 {
  33         int err;
  34         deb_extract(pkg->local_filename, stream,
  35                         extract_control_tar_gz
  36                         | extract_to_stream,
  37                         NULL, "./control", &err);
  38
  39         return err;
  40 }
  41
  42 int
  43 pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg, const char *dir,
  44                 const char *prefix)
  45 {
  46         int err;
  47         char *dir_with_prefix;
  48
  49         sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
  50
  51         deb_extract(pkg->local_filename, stderr,
  52                         extract_control_tar_gz
  53                         | extract_all_to_fs| extract_preserve_date
  54                         | extract_unconditional,
  55                         dir_with_prefix, NULL, &err);
  56
  57         free(dir_with_prefix);
  58         return err;
  59 }
  60
  61 int
  62 pkg_extract_control_files_to_dir(pkg_t *pkg, const char *dir)
  63 {
  64         return pkg_extract_control_files_to_dir_with_prefix(pkg, dir, "");
  65 }
  66
  67
  68 int
  69 pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
  70 {
  71         int err;
  72
  73         deb_extract(pkg->local_filename, stderr,
  74                 extract_data_tar_gz
  75                 | extract_all_to_fs| extract_preserve_date
  76                 | extract_unconditional,
  77                 dir, NULL, &err);
  78
  79         return err;
  80 }
  81
  82 int
  83 pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *stream)
  84 {
  85         int err;
  86
  87     /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
  88        data file names with a '.' as the first character. I've taught
  89        opkg how to cope with the presence or absence of the '.', but
  90        this may trip up dpkg.
  91
  92        For all I know, this could actually be a bug in opkg-build. So,
  93        I'll have to try installing some .debs and comparing the *.list
  94        files.
  95
  96        If we wanted to, we could workaround the deb_extract behavior
  97        right here, by writing to a tmpfile, then munging things as we
  98        wrote to the actual stream. */
  99
 100         deb_extract(pkg->local_filename, stream,
 101                 extract_quiet | extract_data_tar_gz | extract_list,
 102                 NULL, NULL, &err);
 103
 104         return err;
 105 }