source/lib/registry/tools/regdiff.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    simple registry frontend
   4
   5    Copyright (C) Jelmer Vernooij 2004
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 void writediff(REG_KEY *oldkey, REG_KEY *newkey, FILE *out)
  25 {
  26         int i, numvals1, numvals2, numkeys2;
  27
  28         numkeys2 = reg_key_num_subkeys(newkey);
  29         for(i = 0; i < numkeys2; i++) {
  30                 REG_KEY *t1 = reg_key_get_subkey_by_index(newkey, i);
  31                 REG_KEY *t2 = reg_key_get_subkey_by_name(oldkey, reg_key_name(t1));
  32                 if(!t2) {
  33                         fprintf(out, "[%s]\n", reg_key_get_path(t1));
  34                 }
  35                 writediff(t2, t1, out);
  36         }
  37
  38         numvals2 = reg_key_num_values(newkey);
  39         for(i = 0; i < numvals2; i++) {
  40                 REG_VAL *t1 = reg_key_get_value_by_index(newkey, i);
  41                 REG_VAL *t2 = reg_key_get_value_by_name(oldkey, reg_val_name(t1));
  42                 if(!t2 || reg_val_size(t2) != reg_val_size(t1) || memcmp(reg_val_data_blk(t1), reg_val_data_blk(t2), reg_val_size(t1))) {
  43                         fprintf(out, "\"%s\"=%s:%s\n", reg_val_name(t1), str_regtype(reg_val_type(t1)), reg_val_data_string(t1));
  44                 }
  45         }
  46
  47         numvals1 = reg_key_num_values(oldkey);
  48         for(i = 0; i < numvals1; i++) {
  49                 REG_VAL *t1 = reg_key_get_value_by_index(oldkey, i);
  50                 if(!reg_key_get_value_by_name(newkey, reg_val_name(t1))) {
  51                         fprintf(out, "\"%s\"=-\n", reg_val_name(t1));
  52                 }
  53         }
  54 }
  55
  56 int main (int argc, char **argv)
  57 {
  58         uint32  setparms, checkparms;
  59         int opt;
  60         poptContext pc;
  61         REG_KEY *root;
  62         const char *backend1 = NULL, *backend2 = NULL;
  63         const char *location2;
  64         char *outputfile = NULL;
  65         FILE *fd = stdout;
  66         REG_HANDLE *h2;
  67         REG_KEY *root1 = NULL, *root2;
  68         int from_null = 0;
  69         int fullpath = 0, no_values = 0;
  70         struct poptOption long_options[] = {
  71                 POPT_AUTOHELP
  72                 {"backend", 'b', POPT_ARG_STRING, NULL, 'b', "backend to use", NULL},
  73                 {"output", 'o', POPT_ARG_STRING, &outputfile, 'o', "output file to use", NULL },
  74                 {"null", 'n', POPT_ARG_NONE, &from_null, 'n', "Diff from NULL" },
  75                 POPT_TABLEEND
  76         };
  77
  78         pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
  79
  80         while((opt = poptGetNextOpt(pc)) != -1) {
  81                 switch(opt)     {
  82                         case 'b':
  83                                 if(!backend1 && !from_null) backend1 = poptGetOptArg(pc);
  84                                 else if(!backend2) backend2 = poptGetOptArg(pc);
  85                                 break;
  86                 }
  87         }
  88         setup_logging(argv[0], True);
  89
  90         if(!from_null) {
  91                 REG_HANDLE *h1;
  92                 const char *location1;
  93                 location1 = poptGetArg(pc);
  94                 if(!location1) {
  95                         poptPrintUsage(pc, stderr, 0);
  96                         return 1;
  97                 }
  98
  99                 if(!backend1) backend1 = "dir";
 100
 101                 h1 = reg_open(backend1, location1, True);
 102                 if(!h1) {
 103                         fprintf(stderr, "Unable to open '%s' with backend '%s'\n", location1, backend1);
 104                         return 1;
 105                 }
 106
 107                 root1 = reg_get_root(h1);
 108         }
 109
 110         location2 = poptGetArg(pc);
 111         if(!location2) {
 112                 poptPrintUsage(pc, stderr, 0);
 113                 return 2;
 114         }
 115
 116         if(!backend2) backend2 = "dir";
 117
 118         h2 = reg_open(backend2, location2, True);
 119         if(!h2) {
 120                 fprintf(stderr, "Unable to open '%s' with backend '%s'\n", location2, backend2);
 121                 return 1;
 122         }
 123
 124         root2 = reg_get_root(h2);
 125         if(!root2) {
 126                 fprintf(stderr, "Can't open root key for '%s:%s'\n", backend2, location2);
 127                 return 1;
 128         }
 129
 130         poptFreeContext(pc);
 131
 132         if(outputfile) {
 133                 fd = fopen(outputfile, "w+");
 134                 if(!fd) {
 135                         fprintf(stderr, "Unable to open '%s'\n", outputfile);
 136                         return 1;
 137                 }
 138         }
 139
 140         fprintf(fd, "REGEDIT4\n\n");
 141         fprintf(fd, "; Generated using regdiff\n");
 142
 143         writediff(root1, root2, fd);
 144
 145         fclose(fd);
 146
 147         return 0;
 148 }