source4/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 static void writediff(struct registry_key *oldkey, struct registry_key *newkey, FILE *out)
  25 {
  26         int i;
  27         struct registry_key *t1, *t2;
  28         struct registry_value *v1, *v2;
  29         WERROR error1, error2;
  30         TALLOC_CTX *mem_ctx = talloc_init("writediff");
  31
  32         for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_subkey_by_index(mem_ctx, oldkey, i, &t1)); i++) {
  33                 error2 = reg_key_get_subkey_by_name(mem_ctx, newkey, t1->name, &t2);
  34                 if(W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
  35                         fprintf(out, "-%s\n", t1->path+1);
  36                 } else if(!W_ERROR_IS_OK(error2)) {
  37                         DEBUG(0, ("Error occured while getting subkey by name: %d\n", W_ERROR_V(error2)));
  38                 }
  39         }
  40
  41         talloc_destroy(mem_ctx);
  42
  43         if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
  44                 DEBUG(0, ("Error occured while getting subkey by index: %d\n", W_ERROR_V(error1)));
  45                 return;
  46         }
  47
  48         mem_ctx = talloc_init("writediff");
  49
  50         for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_subkey_by_index(mem_ctx, newkey, i, &t1)); i++) {
  51                 error2 = reg_key_get_subkey_by_name(mem_ctx, oldkey, t1->name, &t2);
  52                 if(W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
  53                         fprintf(out, "\n[%s]\n", t1->path+1);
  54                 } else if(!W_ERROR_IS_OK(error2)) {
  55                         DEBUG(0, ("Error occured while getting subkey by name: %d\n", W_ERROR_V(error2)));
  56                 }
  57                 writediff(t2, t1, out);
  58         }
  59
  60         talloc_destroy(mem_ctx);
  61
  62         if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
  63                 DEBUG(0, ("Error occured while getting subkey by index: %d\n", W_ERROR_V(error1)));
  64                 return;
  65         }
  66
  67
  68         mem_ctx = talloc_init("writediff");
  69
  70         for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_value_by_index(mem_ctx, newkey, i, &v1)); i++) {
  71                 error2 = reg_key_get_value_by_name(mem_ctx, oldkey, v1->name, &v2);
  72                 if ((W_ERROR_IS_OK(error2) && (v2->data_len != v1->data_len || memcmp(v1->data_blk, v2->data_blk, v1->data_len)))
  73                         || W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
  74                         fprintf(out, "\"%s\"=%s:%s\n", v1->name, str_regtype(v1->data_type), reg_val_data_string(mem_ctx, v1));
  75                 }
  76
  77                 if(!W_ERROR_IS_OK(error2) && !W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
  78                         DEBUG(0, ("Error occured while getting value by name: %d\n", W_ERROR_V(error2)));
  79                 }
  80         }
  81
  82         talloc_destroy(mem_ctx);
  83
  84         if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
  85                 DEBUG(0, ("Error occured while getting value by index: %d\n", W_ERROR_V(error1)));
  86                 return;
  87         }
  88
  89         mem_ctx = talloc_init("writediff");
  90
  91         for(i = 0; W_ERROR_IS_OK(error1 = reg_key_get_value_by_index(mem_ctx, oldkey, i, &v1)); i++) {
  92                 error2 = reg_key_get_value_by_name(mem_ctx, newkey, v1->name, &v2);
  93                 if(W_ERROR_IS_OK(error2)) {
  94                 } else if(W_ERROR_EQUAL(error2, WERR_DEST_NOT_FOUND)) {
  95                         fprintf(out, "\"%s\"=-\n", v1->name);
  96                 } else {
  97                         DEBUG(0, ("Error occured while getting value by name: %d\n", W_ERROR_V(error2)));
  98                 }
  99         }
 100
 101         talloc_destroy(mem_ctx);
 102
 103         if(!W_ERROR_EQUAL(error1, WERR_NO_MORE_ITEMS)) {
 104                 DEBUG(0, ("Error occured while getting value by index: %d\n", W_ERROR_V(error1)));
 105                 return;
 106         }
 107 }
 108
 109  int main(int argc, char **argv)
 110 {
 111         int opt;
 112         poptContext pc;
 113         const char *backend1 = NULL, *backend2 = NULL;
 114         const char *location2;
 115         const char *credentials1= NULL, *credentials2 = NULL;
 116         char *outputfile = NULL;
 117         FILE *fd = stdout;
 118         struct registry_context *h1 = NULL, *h2;
 119         int from_null = 0;
 120         int i;
 121         WERROR error, error2;
 122         struct poptOption long_options[] = {
 123                 POPT_AUTOHELP
 124                 {"backend", 'b', POPT_ARG_STRING, NULL, 'b', "backend to use", NULL},
 125                 {"credentials", 'c', POPT_ARG_STRING, NULL, 'c', "credentials", NULL},
 126                 {"output", 'o', POPT_ARG_STRING, &outputfile, 'o', "output file to use", NULL },
 127                 {"null", 'n', POPT_ARG_NONE, &from_null, 'n', "Diff from NULL" },
 128                 POPT_TABLEEND
 129         };
 130
 131
 132         if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
 133                 fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
 134         }
 135
 136
 137         pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 138
 139         while((opt = poptGetNextOpt(pc)) != -1) {
 140                 switch(opt)     {
 141                 case 'c':
 142                         if(!credentials1 && !from_null) credentials1 = poptGetOptArg(pc);
 143                         else if(!credentials2) credentials2 = poptGetOptArg(pc);
 144                         break;
 145                 case 'b':
 146                         if(!backend1 && !from_null) backend1 = poptGetOptArg(pc);
 147                         else if(!backend2) backend2 = poptGetOptArg(pc);
 148                         break;
 149                 }
 150         }
 151         setup_logging(argv[0], True);
 152
 153         if(!from_null) {
 154                 const char *location1;
 155                 location1 = poptGetArg(pc);
 156                 if(!location1) {
 157                         poptPrintUsage(pc, stderr, 0);
 158                         return 1;
 159                 }
 160
 161                 if(!backend1) backend1 = "rpc";
 162
 163                 error = reg_open(&h1, backend1, location1, credentials1);
 164                 if(!W_ERROR_IS_OK(error)) {
 165                         fprintf(stderr, "Unable to open '%s' with backend '%s'\n", location1, backend1);
 166                         return 1;
 167                 }
 168         }
 169
 170         location2 = poptGetArg(pc);
 171         if(!location2) {
 172                 poptPrintUsage(pc, stderr, 0);
 173                 return 2;
 174         }
 175
 176         if(!backend2) backend2 = "rpc";
 177
 178         error = reg_open(&h2, backend2, location2, credentials2);
 179         if(!W_ERROR_IS_OK(error)) {
 180                 fprintf(stderr, "Unable to open '%s' with backend '%s'\n", location2, backend2);
 181                 return 1;
 182         }
 183
 184         poptFreeContext(pc);
 185
 186         if(outputfile) {
 187                 fd = fopen(outputfile, "w+");
 188                 if(!fd) {
 189                         fprintf(stderr, "Unable to open '%s'\n", outputfile);
 190                         return 1;
 191                 }
 192         }
 193
 194         fprintf(fd, "REGEDIT4\n\n");
 195         fprintf(fd, "; Generated using regdiff\n");
 196
 197         error2 = error = WERR_OK;
 198
 199         for(i = 0; (!h1 || i < h1->num_hives) && i < h2->num_hives; i++) {
 200                 writediff(h1?h1->hives[i]->root:NULL, h2->hives[i]->root, fd);
 201         }
 202
 203         fclose(fd);
 204
 205         return 0;
 206 }