libopkg/conffile.c

   1 /* conffile.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 #include <stdlib.h>
  20
  21 #include "opkg_message.h"
  22 #include "conffile.h"
  23 #include "file_util.h"
  24 #include "sprintf_alloc.h"
  25 #include "opkg_conf.h"
  26
  27 int conffile_init(conffile_t * conffile, const char *file_name,
  28                   const char *md5sum)
  29 {
  30         return nv_pair_init(conffile, file_name, md5sum);
  31 }
  32
  33 void conffile_deinit(conffile_t * conffile)
  34 {
  35         nv_pair_deinit(conffile);
  36 }
  37
  38 int conffile_has_been_modified(conffile_t * conffile)
  39 {
  40         char *chksum;
  41         char *filename = conffile->name;
  42         char *root_filename;
  43         int ret = 1;
  44
  45         if (conffile->value == NULL) {
  46                 opkg_msg(NOTICE, "Conffile %s has no md5sum.\n",
  47                          conffile->name);
  48                 return 1;
  49         }
  50
  51         root_filename = root_filename_alloc(filename);
  52
  53         if (conffile->value && strlen(conffile->value) > 33) {
  54                 chksum = file_sha256sum_alloc(root_filename);
  55         } else {
  56                 chksum = file_md5sum_alloc(root_filename);
  57         }
  58
  59         if (chksum && (ret = strcmp(chksum, conffile->value))) {
  60                 opkg_msg(INFO, "Conffile %s:\n\told chk=%s\n\tnew chk=%s\n",
  61                          conffile->name, chksum, conffile->value);
  62         }
  63
  64         free(root_filename);
  65         if (chksum)
  66                 free(chksum);
  67
  68         return ret;
  69 }