source3/utils/net_eventlog.c

   1 /*
   2  * Samba Unix/Linux SMB client library
   3  * Distributed SMB/CIFS Server Management Utility
   4  * Local win32 eventlog interface
   5  *
   6  * Copyright (C) Guenther Deschner 2009
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "utils/net.h"
  24
  25 /**
  26  * Dump an *evt win32 eventlog file
  27  *
  28  * @param argc  Standard main() style argc.
  29  * @param argv  Standard main() style argv. Initial components are already
  30  *              stripped.
  31  *
  32  * @return A shell status integer (0 for success).
  33  **/
  34
  35 static int net_eventlog_dump(struct net_context *c, int argc,
  36                              const char **argv)
  37 {
  38         int ret = -1;
  39         TALLOC_CTX *ctx = talloc_stackframe();
  40         enum ndr_err_code ndr_err;
  41         DATA_BLOB blob;
  42         struct EVENTLOG_EVT_FILE evt;
  43         char *s;
  44
  45         if (argc < 1 || c->display_usage) {
  46                 d_fprintf(stderr, "usage: net eventlog dump <file.evt>\n");
  47                 goto done;
  48         }
  49
  50         blob.data = (uint8_t *)file_load(argv[0], &blob.length, 0, ctx);
  51         if (!blob.data) {
  52                 d_fprintf(stderr, "failed to load evt file: %s\n", argv[0]);
  53                 goto done;
  54         }
  55
  56         ndr_err = ndr_pull_struct_blob(&blob, ctx, NULL, &evt,
  57                    (ndr_pull_flags_fn_t)ndr_pull_EVENTLOG_EVT_FILE);
  58         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  59                 d_fprintf(stderr, "evt pull failed: %s\n", ndr_errstr(ndr_err));
  60                 goto done;
  61         }
  62
  63         s = NDR_PRINT_STRUCT_STRING(ctx, EVENTLOG_EVT_FILE, &evt);
  64         if (s) {
  65                 printf("%s\n", s);
  66         }
  67
  68         ret = 0;
  69  done:
  70         TALLOC_FREE(ctx);
  71         return ret;
  72 }
  73
  74 /**
  75  * Import an *evt win32 eventlog file to internal tdb representation
  76  *
  77  * @param argc  Standard main() style argc.
  78  * @param argv  Standard main() style argv. Initial components are already
  79  *              stripped.
  80  *
  81  * @return A shell status integer (0 for success).
  82  **/
  83
  84 static int net_eventlog_import(struct net_context *c, int argc,
  85                                const char **argv)
  86 {
  87         int ret = -1;
  88         TALLOC_CTX *ctx = talloc_stackframe();
  89         NTSTATUS status;
  90         enum ndr_err_code ndr_err;
  91         DATA_BLOB blob;
  92         uint32_t num_records = 0;
  93         uint32_t i;
  94         ELOG_TDB *etdb = NULL;
  95
  96         struct EVENTLOGHEADER evt_header;
  97         struct EVENTLOG_EVT_FILE evt;
  98
  99         if (argc < 2 || c->display_usage) {
 100                 d_fprintf(stderr, "usage: net eventlog import <file> <eventlog>\n");
 101                 goto done;
 102         }
 103
 104         blob.data = (uint8_t *)file_load(argv[0], &blob.length, 0, ctx);
 105         if (!blob.data) {
 106                 d_fprintf(stderr, "failed to load evt file: %s\n", argv[0]);
 107                 goto done;
 108         }
 109
 110         /* dump_data(0, blob.data, blob.length); */
 111         ndr_err = ndr_pull_struct_blob(&blob, ctx, NULL, &evt_header,
 112                    (ndr_pull_flags_fn_t)ndr_pull_EVENTLOGHEADER);
 113         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 114                 d_fprintf(stderr, "evt header pull failed: %s\n", ndr_errstr(ndr_err));
 115                 goto done;
 116         }
 117
 118         if (evt_header.Flags & ELF_LOGFILE_HEADER_WRAP) {
 119                 d_fprintf(stderr, "input file is wrapped, cannot proceed\n");
 120                 goto done;
 121         }
 122
 123         ndr_err = ndr_pull_struct_blob(&blob, ctx, NULL, &evt,
 124                    (ndr_pull_flags_fn_t)ndr_pull_EVENTLOG_EVT_FILE);
 125         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 126                 d_fprintf(stderr, "evt pull failed: %s\n", ndr_errstr(ndr_err));
 127                 goto done;
 128         }
 129
 130         /* NDR_PRINT_DEBUG(EVENTLOG_EVT_FILE, &evt); */
 131
 132         etdb = elog_open_tdb(argv[1], false, false);
 133         if (!etdb) {
 134                 d_fprintf(stderr, "can't open the eventlog TDB (%s)\n", argv[1]);
 135                 goto done;
 136         }
 137
 138         num_records = evt.hdr.CurrentRecordNumber - evt.hdr.OldestRecordNumber;
 139
 140         for (i=0; i<num_records; i++) {
 141                 uint32_t record_number;
 142                 struct eventlog_Record_tdb e;
 143
 144                 status = evlog_evt_entry_to_tdb_entry(ctx, &evt.records[i], &e);
 145                 if (!NT_STATUS_IS_OK(status)) {
 146                         goto done;
 147                 }
 148
 149                 status = evlog_push_record_tdb(ctx, ELOG_TDB_CTX(etdb),
 150                                                &e, &record_number);
 151                 if (!NT_STATUS_IS_OK(status)) {
 152                         d_fprintf(stderr, "can't write to the eventlog: %s\n",
 153                                 nt_errstr(status));
 154                         goto done;
 155                 }
 156         }
 157
 158         printf("wrote %d entries to tdb\n", i);
 159
 160         ret = 0;
 161  done:
 162
 163         elog_close_tdb(etdb, false);
 164
 165         TALLOC_FREE(ctx);
 166         return ret;
 167 }
 168
 169 /**
 170  * Export internal eventlog tdb representation to an *evt win32 eventlog file
 171  *
 172  * @param argc  Standard main() style argc.
 173  * @param argv  Standard main() style argv. Initial components are already
 174  *              stripped.
 175  *
 176  * @return A shell status integer (0 for success).
 177  **/
 178
 179 static int net_eventlog_export(struct net_context *c, int argc,
 180                                const char **argv)
 181 {
 182         int ret = -1;
 183         NTSTATUS status;
 184         TALLOC_CTX *ctx = talloc_stackframe();
 185         enum ndr_err_code ndr_err;
 186         DATA_BLOB blob;
 187         uint32_t num_records = 0;
 188         struct EVENTLOG_EVT_FILE evt;
 189         ELOG_TDB *etdb = NULL;
 190         uint32_t count = 1;
 191         size_t endoffset = 0;
 192
 193         if (argc < 2 || c->display_usage) {
 194                 d_fprintf(stderr, "usage: net eventlog export <file> <eventlog>\n");
 195                 goto done;
 196         }
 197
 198         etdb = elog_open_tdb(argv[1], false, true);
 199         if (!etdb) {
 200                 d_fprintf(stderr, "can't open the eventlog TDB (%s)\n", argv[1]);
 201                 goto done;
 202         }
 203
 204         ZERO_STRUCT(evt);
 205
 206         while (1) {
 207
 208                 struct eventlog_Record_tdb *r;
 209                 struct EVENTLOGRECORD e;
 210
 211                 r = evlog_pull_record_tdb(ctx, etdb->tdb, count);
 212                 if (!r) {
 213                         break;
 214                 }
 215
 216                 status = evlog_tdb_entry_to_evt_entry(ctx, r, &e);
 217                 if (!NT_STATUS_IS_OK(status)) {
 218                         goto done;
 219                 }
 220
 221                 endoffset += ndr_size_EVENTLOGRECORD(&e, NULL, 0);
 222
 223                 ADD_TO_ARRAY(ctx, struct EVENTLOGRECORD, e, &evt.records, &num_records);
 224                 count++;
 225         }
 226
 227         evt.hdr.StartOffset             = 0x30;
 228         evt.hdr.EndOffset               = evt.hdr.StartOffset + endoffset;
 229         evt.hdr.CurrentRecordNumber     = count;
 230         evt.hdr.OldestRecordNumber      = 1;
 231         evt.hdr.MaxSize                 = tdb_fetch_int32(etdb->tdb, EVT_MAXSIZE);
 232         evt.hdr.Flags                   = 0;
 233         evt.hdr.Retention               = tdb_fetch_int32(etdb->tdb, EVT_RETENTION);
 234
 235         if (DEBUGLEVEL >= 10) {
 236                 NDR_PRINT_DEBUG(EVENTLOGHEADER, &evt.hdr);
 237         }
 238
 239         evt.eof.BeginRecord             = 0x30;
 240         evt.eof.EndRecord               = evt.hdr.StartOffset + endoffset;
 241         evt.eof.CurrentRecordNumber     = evt.hdr.CurrentRecordNumber;
 242         evt.eof.OldestRecordNumber      = evt.hdr.OldestRecordNumber;
 243
 244         if (DEBUGLEVEL >= 10) {
 245                 NDR_PRINT_DEBUG(EVENTLOGEOF, &evt.eof);
 246         }
 247
 248         ndr_err = ndr_push_struct_blob(&blob, ctx, NULL, &evt,
 249                    (ndr_push_flags_fn_t)ndr_push_EVENTLOG_EVT_FILE);
 250         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 251                 d_fprintf(stderr, "evt push failed: %s\n", ndr_errstr(ndr_err));
 252                 goto done;
 253         }
 254
 255         if (!file_save(argv[0], blob.data, blob.length)) {
 256                 d_fprintf(stderr, "failed to save evt file: %s\n", argv[0]);
 257                 goto done;
 258         }
 259
 260         ret = 0;
 261  done:
 262
 263         elog_close_tdb(etdb, false);
 264
 265         TALLOC_FREE(ctx);
 266         return ret;
 267 }
 268
 269 /**
 270  * 'net rpc eventlog' entrypoint.
 271  * @param argc  Standard main() style argc.
 272  * @param argv  Standard main() style argv. Initial components are already
 273  *              stripped.
 274  **/
 275
 276 int net_eventlog(struct net_context *c, int argc, const char **argv)
 277 {
 278         int ret = -1;
 279
 280         struct functable func[] = {
 281                 {
 282                         "dump",
 283                         net_eventlog_dump,
 284                         NET_TRANSPORT_LOCAL,
 285                         "Dump eventlog",
 286                         "net eventlog dump\n"
 287                         "    Dump win32 *.evt eventlog file"
 288                 },
 289                 {
 290                         "import",
 291                         net_eventlog_import,
 292                         NET_TRANSPORT_LOCAL,
 293                         "Import eventlog",
 294                         "net eventlog import\n"
 295                         "    Import win32 *.evt eventlog file"
 296                 },
 297                 {
 298                         "export",
 299                         net_eventlog_export,
 300                         NET_TRANSPORT_LOCAL,
 301                         "Export eventlog",
 302                         "net eventlog export\n"
 303                         "    Export win32 *.evt eventlog file"
 304                 },
 305
 306
 307         { NULL, NULL, 0, NULL, NULL }
 308         };
 309
 310         ret = net_run_function(c, argc, argv, "net eventlog", func);
 311
 312         return ret;
 313 }