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