src/rrd_restore.c

   1 /*****************************************************************************
   2  * RRDtool 1.2.23  Copyright by Tobi Oetiker, 1997-2007
   3  *****************************************************************************
   4  * rrd_restore.c  creates new rrd from data dumped by rrd_dump.c
   5  *****************************************************************************/
   6
   7 #include "rrd_tool.h"
   8 #include "rrd_rpncalc.h"
   9 #include <fcntl.h>
  10
  11 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
  12 #include <io.h>
  13 #define open _open
  14 #define close _close
  15 #endif
  16
  17 /* Prototypes */
  18
  19 void      xml_lc(
  20     char *);
  21 int       skip(
  22     char **);
  23 int       skipxml(
  24     char **);
  25 int       eat_tag(
  26     char **,
  27     char *);
  28 int       read_tag(
  29     char **,
  30     char *,
  31     char *,
  32     void *);
  33 int       xml2rrd(
  34     char *,
  35     rrd_t *,
  36     char);
  37 int       rrd_creat(
  38     char *,
  39     rrd_t *,
  40     char);
  41 void      parse_patch1028_RRA_params(
  42     char **buf,
  43     rrd_t *rrd,
  44     int rra_index);
  45 void      parse_patch1028_CDP_params(
  46     char **buf,
  47     rrd_t *rrd,
  48     int rra_index,
  49     int ds_index);
  50 void      parse_FAILURES_history(
  51     char **buf,
  52     rrd_t *rrd,
  53     int rra_index,
  54     int ds_index);
  55
  56 /* convert all occurrences of <BlaBlaBla> to <blablabla> */
  57
  58 void xml_lc(
  59     char *buf)
  60 {
  61     int       intag = 0;
  62
  63     while ((*buf)) {
  64         if (intag == 0 && (*buf) == '<') {
  65             intag = 1;
  66         } else if (intag == 1 && (*buf) == '>') {
  67             intag = 0;
  68             continue;
  69         } else if (intag == 1) {
  70             *buf = tolower(*buf);
  71         }
  72         buf++;
  73     }
  74 }
  75
  76 int skipxml(
  77     char **buf)
  78 {
  79     char     *ptr;
  80
  81     ptr = (*buf);
  82     do {
  83         (*buf) = ptr;
  84         while ((*(ptr + 1))
  85                && ((*ptr) == ' ' || (*ptr) == '\r' || (*ptr) == '\n'
  86                    || (*ptr) == '\t'))
  87             ptr++;
  88         if (strncmp(ptr, "<?xml", 4) == 0) {
  89             ptr = strstr(ptr, "?>");
  90             if (ptr)
  91                 ptr += 2;
  92             else {
  93                 rrd_set_error("Dangling XML header");
  94                 (*buf) = NULL;
  95                 return -1;
  96             }
  97         }
  98     } while ((*buf) != ptr);
  99     return 1;
 100 }
 101
 102 int skip(
 103     char **buf)
 104 {
 105     char     *ptr;
 106
 107     if ((buf == NULL) || (*buf == NULL))
 108         return -1;
 109     ptr = (*buf);
 110     do {
 111         (*buf) = ptr;
 112         while ((*(ptr + 1))
 113                && ((*ptr) == ' ' || (*ptr) == '\r' || (*ptr) == '\n'
 114                    || (*ptr) == '\t'))
 115             ptr++;
 116         if (strncmp(ptr, "<!--", 4) == 0) {
 117             ptr = strstr(ptr, "-->");
 118             if (ptr)
 119                 ptr += 3;
 120             else {
 121                 rrd_set_error("Dangling Comment");
 122                 (*buf) = NULL;
 123                 return -1;
 124             }
 125         }
 126     } while ((*buf) != ptr);
 127     return 1;
 128 }
 129
 130 int eat_tag(
 131     char **buf,
 132     char *tag)
 133 {
 134     if ((*buf) == NULL)
 135         return -1;      /* fall though clause */
 136
 137     rrd_clear_error();
 138     skip(buf);
 139     if ((**buf) == '<'
 140         && strncmp((*buf) + 1, tag, strlen(tag)) == 0
 141         && *((*buf) + strlen(tag) + 1) == '>') {
 142         (*buf) += strlen(tag) + 2;
 143     } else {
 144         rrd_set_error("No <%s> tag found", tag);
 145         (*buf) = NULL;
 146         return -1;
 147     }
 148     skip(buf);
 149     return 1;
 150 }
 151
 152 int read_tag(
 153     char **buf,
 154     char *tag,
 155     char *format,
 156     void *value)
 157 {
 158     char     *end_tag;
 159     int       matches;
 160
 161     if ((*buf) == NULL)
 162         return -1;      /* fall though clause */
 163     rrd_clear_error();
 164     if (eat_tag(buf, tag) == 1) {
 165         char     *temp;
 166
 167         temp = (*buf);
 168         while (*((*buf) + 1) && (*(*buf) != '<'))
 169             (*buf)++;   /*find start of endtag */
 170         *(*buf) = '\0';
 171         matches = sscanf(temp, format, value);
 172         *(*buf) = '<';
 173         end_tag = malloc((strlen(tag) + 2) * sizeof(char));
 174         sprintf(end_tag, "/%s", tag);
 175         eat_tag(buf, end_tag);
 176         free(end_tag);
 177         if (matches == 0 && strcmp(format, "%lf") == 0)
 178             (*((double *) (value))) = DNAN;
 179         if (matches != 1)
 180             return 0;
 181         return 1;
 182     }
 183     return -1;
 184 }
 185
 186
 187 /* parse the data stored in buf and return a filled rrd structure */
 188 int xml2rrd(
 189     char *buf,
 190     rrd_t *rrd,
 191     char rc)
 192 {
 193     /* pass 1 identify number of RRAs  */
 194     char     *ptr, *ptr2, *ptr3;    /* walks thought the buffer */
 195     long      rows = 0, mempool = 0, i = 0;
 196     int       rra_index;
 197     int       input_version;
 198
 199     xml_lc(buf);        /* lets lowercase all active parts of the xml */
 200     ptr = buf;
 201     ptr2 = buf;
 202     ptr3 = buf;
 203     /* start with an RRD tag */
 204
 205     skipxml(&ptr);
 206
 207     eat_tag(&ptr, "rrd");
 208     /* allocate static header */
 209     if ((rrd->stat_head = calloc(1, sizeof(stat_head_t))) == NULL) {
 210         rrd_set_error("allocating rrd.stat_head");
 211         return -1;
 212     };
 213
 214     strcpy(rrd->stat_head->cookie, RRD_COOKIE);
 215     read_tag(&ptr, "version", "%4[0-9]", rrd->stat_head->version);
 216     input_version = atoi(rrd->stat_head->version);
 217     /* added primitive version checking */
 218     if (input_version > atoi(RRD_VERSION) || input_version < 1) {
 219         rrd_set_error
 220             ("Incompatible file version, detected version %s. This is not supported by the version %s restore tool.\n",
 221              rrd->stat_head->version, RRD_VERSION);
 222         free(rrd->stat_head);
 223         rrd->stat_head = NULL;
 224         return -1;
 225     }
 226     /* make sure we output the right version */
 227     strcpy(rrd->stat_head->version, RRD_VERSION);
 228
 229     /*  if (atoi(rrd -> stat_head -> version) < 2)
 230        {
 231        rrd_set_error("Can only restore version >= 2 (Not %s). Dump your old rrd using a current rrdtool dump.",  rrd -> stat_head -> version );
 232        return -1;
 233        } */
 234
 235     rrd->stat_head->float_cookie = FLOAT_COOKIE;
 236     rrd->stat_head->ds_cnt = 0;
 237     rrd->stat_head->rra_cnt = 0;
 238     read_tag(&ptr, "step", "%lu", &(rrd->stat_head->pdp_step));
 239
 240     /* allocate live head */
 241     if ((rrd->live_head = calloc(1, sizeof(live_head_t))) == NULL) {
 242         rrd_set_error("allocating rrd.live_head");
 243         return -1;
 244     }
 245     read_tag(&ptr, "lastupdate", "%lu", &(rrd->live_head->last_up));
 246
 247     /* Data Source Definition Part */
 248     ptr2 = ptr;
 249     while (eat_tag(&ptr2, "ds") == 1) {
 250         rrd->stat_head->ds_cnt++;
 251         if ((rrd->ds_def =
 252              rrd_realloc(rrd->ds_def,
 253                          rrd->stat_head->ds_cnt * sizeof(ds_def_t))) ==
 254             NULL) {
 255             rrd_set_error("allocating rrd.ds_def");
 256             return -1;
 257         };
 258         /* clean out memory to make sure no data gets stored from previous tasks */
 259         memset(&(rrd->ds_def[rrd->stat_head->ds_cnt - 1]), 0,
 260                sizeof(ds_def_t));
 261         if ((rrd->pdp_prep =
 262              rrd_realloc(rrd->pdp_prep,
 263                          rrd->stat_head->ds_cnt * sizeof(pdp_prep_t))) ==
 264             NULL) {
 265             rrd_set_error("allocating pdp_prep");
 266             return (-1);
 267         }
 268         /* clean out memory to make sure no data gets stored from previous tasks */
 269         memset(&(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1]), 0,
 270                sizeof(pdp_prep_t));
 271
 272         read_tag(&ptr2, "name", DS_NAM_FMT,
 273                  rrd->ds_def[rrd->stat_head->ds_cnt - 1].ds_nam);
 274
 275         read_tag(&ptr2, "type", DST_FMT,
 276                  rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst);
 277         /* test for valid type */
 278         if ((int) dst_conv(rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst) == -1)
 279             return -1;
 280
 281         if (dst_conv(rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst) != DST_CDEF) {
 282             read_tag(&ptr2, "minimal_heartbeat", "%lu",
 283                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 284                        par[DS_mrhb_cnt].u_cnt));
 285             read_tag(&ptr2, "min", "%lf",
 286                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 287                        par[DS_min_val].u_val));
 288             read_tag(&ptr2, "max", "%lf",
 289                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 290                        par[DS_max_val].u_val));
 291         } else {        /* DST_CDEF */
 292             char      buffer[1024];
 293
 294             read_tag(&ptr2, "cdef", "%1000s", buffer);
 295             parseCDEF_DS(buffer, rrd, rrd->stat_head->ds_cnt - 1);
 296             if (rrd_test_error())
 297                 return -1;
 298         }
 299
 300         read_tag(&ptr2, "last_ds", "%30s",
 301                  rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].last_ds);
 302         read_tag(&ptr2, "value", "%lf",
 303                  &(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].scratch[PDP_val].
 304                    u_val));
 305         read_tag(&ptr2, "unknown_sec", "%lu",
 306                  &(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].
 307                    scratch[PDP_unkn_sec_cnt].u_cnt));
 308         eat_tag(&ptr2, "/ds");
 309         ptr = ptr2;
 310     }
 311
 312     ptr2 = ptr;
 313     while (eat_tag(&ptr2, "rra") == 1) {
 314         rrd->stat_head->rra_cnt++;
 315
 316         /* allocate and reset rra definition areas */
 317         if ((rrd->rra_def =
 318              rrd_realloc(rrd->rra_def,
 319                          rrd->stat_head->rra_cnt * sizeof(rra_def_t))) ==
 320             NULL) {
 321             rrd_set_error("allocating rra_def");
 322             return -1;
 323         }
 324         memset(&(rrd->rra_def[rrd->stat_head->rra_cnt - 1]), 0,
 325                sizeof(rra_def_t));
 326
 327         /* allocate and reset consolidation point areas */
 328         if ((rrd->cdp_prep = rrd_realloc(rrd->cdp_prep,
 329                                          rrd->stat_head->rra_cnt
 330                                          * rrd->stat_head->ds_cnt *
 331                                          sizeof(cdp_prep_t))) == NULL) {
 332             rrd_set_error("allocating cdp_prep");
 333             return -1;
 334         }
 335
 336         memset(&
 337                (rrd->
 338                 cdp_prep[rrd->stat_head->ds_cnt *
 339                          (rrd->stat_head->rra_cnt - 1)]), 0,
 340                rrd->stat_head->ds_cnt * sizeof(cdp_prep_t));
 341
 342
 343         read_tag(&ptr2, "cf", CF_NAM_FMT,
 344                  rrd->rra_def[rrd->stat_head->rra_cnt - 1].cf_nam);
 345         /* test for valid type */
 346         if ((int) cf_conv(rrd->rra_def[rrd->stat_head->rra_cnt - 1].cf_nam) ==
 347             -1)
 348             return -1;
 349
 350         read_tag(&ptr2, "pdp_per_row", "%lu",
 351                  &(rrd->rra_def[rrd->stat_head->rra_cnt - 1].pdp_cnt));
 352         /* support to read RRA parameters */
 353         rra_index = rrd->stat_head->rra_cnt - 1;
 354         if (input_version < 2) {
 355             read_tag(&ptr2, "xff", "%lf",
 356                      &(rrd->rra_def[rra_index].par[RRA_cdp_xff_val].u_val));
 357         } else {
 358             if (eat_tag(&ptr2, "params") != 1) {
 359                 rrd_set_error("could not find params tag to eat and skip");
 360                 return -1;
 361             }
 362             skip(&ptr2);
 363             /* backwards compatibility w/ old patch */
 364             if (strncmp(ptr2, "<value>", 7) == 0) {
 365                 parse_patch1028_RRA_params(&ptr2, rrd, rra_index);
 366             } else {
 367                 switch (cf_conv(rrd->rra_def[rra_index].cf_nam)) {
 368                 case CF_HWPREDICT:
 369                 case CF_MHWPREDICT:
 370                     read_tag(&ptr2, "hw_alpha", "%lf",
 371                              &(rrd->rra_def[rra_index].par[RRA_hw_alpha].
 372                                u_val));
 373                     read_tag(&ptr2, "hw_beta", "%lf",
 374                              &(rrd->rra_def[rra_index].par[RRA_hw_beta].
 375                                u_val));
 376                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 377                              &(rrd->rra_def[rra_index].
 378                                par[RRA_dependent_rra_idx].u_cnt));
 379                     break;
 380                 case CF_SEASONAL:
 381                 case CF_DEVSEASONAL:
 382                     read_tag(&ptr2, "seasonal_gamma", "%lf",
 383                              &(rrd->rra_def[rra_index].
 384                                par[RRA_seasonal_gamma].u_val));
 385                     read_tag(&ptr2, "seasonal_smooth_idx", "%lu",
 386                              &(rrd->rra_def[rra_index].
 387                                par[RRA_seasonal_smooth_idx].u_cnt));
 388                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 389                              &(rrd->rra_def[rra_index].
 390                                par[RRA_dependent_rra_idx].u_cnt));
 391                     break;
 392                 case CF_FAILURES:
 393                     read_tag(&ptr2, "delta_pos", "%lf",
 394                              &(rrd->rra_def[rra_index].par[RRA_delta_pos].
 395                                u_val));
 396                     read_tag(&ptr2, "delta_neg", "%lf",
 397                              &(rrd->rra_def[rra_index].par[RRA_delta_neg].
 398                                u_val));
 399                     read_tag(&ptr2, "window_len", "%lu",
 400                              &(rrd->rra_def[rra_index].par[RRA_window_len].
 401                                u_cnt));
 402                     read_tag(&ptr2, "failure_threshold", "%lu",
 403                              &(rrd->rra_def[rra_index].
 404                                par[RRA_failure_threshold].u_cnt));
 405                     /* fall thru */
 406                 case CF_DEVPREDICT:
 407                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 408                              &(rrd->rra_def[rra_index].
 409                                par[RRA_dependent_rra_idx].u_cnt));
 410                     break;
 411                 case CF_AVERAGE:
 412                 case CF_MAXIMUM:
 413                 case CF_MINIMUM:
 414                 case CF_LAST:
 415                 default:
 416                     read_tag(&ptr2, "xff", "%lf",
 417                              &(rrd->rra_def[rra_index].par[RRA_cdp_xff_val].
 418                                u_val));
 419                 }
 420             }
 421             eat_tag(&ptr2, "/params");
 422         }
 423
 424
 425         eat_tag(&ptr2, "cdp_prep");
 426         for (i = 0; i < (int) rrd->stat_head->ds_cnt; i++) {
 427             eat_tag(&ptr2, "ds");
 428             /* support to read CDP parameters */
 429             rra_index = rrd->stat_head->rra_cnt - 1;
 430             skip(&ptr2);
 431             if (input_version < 2) {
 432                 rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 433                               i].scratch[CDP_primary_val].u_val = 0.0;
 434                 rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 435                               i].scratch[CDP_secondary_val].u_val = 0.0;
 436                 read_tag(&ptr2, "value", "%lf",
 437                          &(rrd->
 438                            cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 439                                     i].scratch[CDP_val].u_val));
 440                 read_tag(&ptr2, "unknown_datapoints", "%lu",
 441                          &(rrd->
 442                            cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 443                                     i].scratch[CDP_unkn_pdp_cnt].u_cnt));
 444             } else {
 445
 446                 if (strncmp(ptr2, "<value>", 7) == 0) {
 447                     parse_patch1028_CDP_params(&ptr2, rrd, rra_index, i);
 448                 } else {
 449                     read_tag(&ptr2, "primary_value", "%lf",
 450                              &(rrd->
 451                                cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 452                                         + i].scratch[CDP_primary_val].u_val));
 453                     read_tag(&ptr2, "secondary_value", "%lf",
 454                              &(rrd->
 455                                cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 456                                         +
 457                                         i].scratch[CDP_secondary_val].u_val));
 458                     switch (cf_conv(rrd->rra_def[rra_index].cf_nam)) {
 459                     case CF_HWPREDICT:
 460                     case CF_MHWPREDICT:
 461                         read_tag(&ptr2, "intercept", "%lf",
 462                                  &(rrd->
 463                                    cdp_prep[rrd->stat_head->ds_cnt *
 464                                             (rra_index)
 465                                             +
 466                                             i].scratch[CDP_hw_intercept].
 467                                    u_val));
 468                         read_tag(&ptr2, "last_intercept", "%lf",
 469                                  &(rrd->
 470                                    cdp_prep[rrd->stat_head->ds_cnt *
 471                                             (rra_index)
 472                                             +
 473                                             i].scratch[CDP_hw_last_intercept].
 474                                    u_val));
 475                         read_tag(&ptr2, "slope", "%lf",
 476                                  &(rrd->
 477                                    cdp_prep[rrd->stat_head->ds_cnt *
 478                                             (rra_index)
 479                                             +
 480                                             i].scratch[CDP_hw_slope].u_val));
 481                         read_tag(&ptr2, "last_slope", "%lf",
 482                                  &(rrd->
 483                                    cdp_prep[rrd->stat_head->ds_cnt *
 484                                             (rra_index)
 485                                             +
 486                                             i].scratch[CDP_hw_last_slope].
 487                                    u_val));
 488                         read_tag(&ptr2, "nan_count", "%lu",
 489                                  &(rrd->
 490                                    cdp_prep[rrd->stat_head->ds_cnt *
 491                                             (rra_index)
 492                                             +
 493                                             i].scratch[CDP_null_count].
 494                                    u_cnt));
 495                         read_tag(&ptr2, "last_nan_count", "%lu",
 496                                  &(rrd->
 497                                    cdp_prep[rrd->stat_head->ds_cnt *
 498                                             (rra_index)
 499                                             +
 500                                             i].scratch[CDP_last_null_count].
 501                                    u_cnt));
 502                         break;
 503                     case CF_SEASONAL:
 504                     case CF_DEVSEASONAL:
 505                         read_tag(&ptr2, "seasonal", "%lf",
 506                                  &(rrd->
 507                                    cdp_prep[rrd->stat_head->ds_cnt *
 508                                             (rra_index)
 509                                             +
 510                                             i].scratch[CDP_hw_seasonal].
 511                                    u_val));
 512                         read_tag(&ptr2, "last_seasonal", "%lf",
 513                                  &(rrd->
 514                                    cdp_prep[rrd->stat_head->ds_cnt *
 515                                             (rra_index)
 516                                             +
 517                                             i].scratch[CDP_hw_last_seasonal].
 518                                    u_val));
 519                         read_tag(&ptr2, "init_flag", "%lu",
 520                                  &(rrd->
 521                                    cdp_prep[rrd->stat_head->ds_cnt *
 522                                             (rra_index)
 523                                             +
 524                                             i].scratch[CDP_init_seasonal].
 525                                    u_cnt));
 526                         break;
 527                     case CF_DEVPREDICT:
 528                         break;
 529                     case CF_FAILURES:
 530                         parse_FAILURES_history(&ptr2, rrd, rra_index, i);
 531                         break;
 532                     case CF_AVERAGE:
 533                     case CF_MAXIMUM:
 534                     case CF_MINIMUM:
 535                     case CF_LAST:
 536                     default:
 537                         read_tag(&ptr2, "value", "%lf",
 538                                  &(rrd->
 539                                    cdp_prep[rrd->stat_head->ds_cnt *
 540                                             (rra_index) +
 541                                             i].scratch[CDP_val].u_val));
 542                         read_tag(&ptr2, "unknown_datapoints", "%lu",
 543                                  &(rrd->
 544                                    cdp_prep[rrd->stat_head->ds_cnt *
 545                                             (rra_index) +
 546                                             i].scratch[CDP_unkn_pdp_cnt].
 547                                    u_cnt));
 548                         break;
 549                     }
 550                 }
 551             }
 552             eat_tag(&ptr2, "/ds");
 553         }
 554         eat_tag(&ptr2, "/cdp_prep");
 555         rrd->rra_def[rrd->stat_head->rra_cnt - 1].row_cnt = 0;
 556         eat_tag(&ptr2, "database");
 557         ptr3 = ptr2;
 558         while (eat_tag(&ptr3, "row") == 1) {
 559
 560             if (mempool == 0) {
 561                 mempool = 1000;
 562                 if ((rrd->rrd_value = rrd_realloc(rrd->rrd_value,
 563                                                   (rows +
 564                                                    mempool) *
 565                                                   (rrd->stat_head->ds_cnt)
 566                                                   * sizeof(rrd_value_t))) ==
 567                     NULL) {
 568                     rrd_set_error("allocating rrd_values");
 569                     return -1;
 570                 }
 571             }
 572             rows++;
 573             mempool--;
 574             rrd->rra_def[rrd->stat_head->rra_cnt - 1].row_cnt++;
 575             for (i = 0; i < (int) rrd->stat_head->ds_cnt; i++) {
 576
 577                 rrd_value_t *value =
 578                     &(rrd->
 579                       rrd_value[(rows - 1) * rrd->stat_head->ds_cnt + i]);
 580
 581                 read_tag(&ptr3, "v", "%lf", value);
 582
 583                 if ((rc == 1)   /* do we have to check for the ranges */
 584                     &&(!isnan(*value))  /* not a NAN value */
 585                     &&(dst_conv(rrd->ds_def[i].dst) != DST_CDEF)
 586                     && (    /* min defined and in the range ? */
 587                            (!isnan(rrd->ds_def[i].par[DS_min_val].u_val)
 588                             && (*value <
 589                                 rrd->ds_def[i].par[DS_min_val].u_val))
 590                            ||   /* max defined and in the range ? */
 591                            (!isnan(rrd->ds_def[i].par[DS_max_val].u_val)
 592                             && (*value >
 593                                 rrd->ds_def[i].par[DS_max_val].u_val))
 594                     )
 595                     ) {
 596                     fprintf(stderr,
 597                             "out of range found [ds: %lu], [value : %0.10e]\n",
 598                             i, *value);
 599                     *value = DNAN;
 600                 }
 601             }
 602             eat_tag(&ptr3, "/row");
 603             ptr2 = ptr3;
 604         }
 605         eat_tag(&ptr2, "/database");
 606         eat_tag(&ptr2, "/rra");
 607         ptr = ptr2;
 608     }
 609     eat_tag(&ptr, "/rrd");
 610
 611     if ((rrd->rra_ptr =
 612          calloc(1, sizeof(rra_ptr_t) * rrd->stat_head->rra_cnt)) == NULL) {
 613         rrd_set_error("allocating rra_ptr");
 614         return (-1);
 615     }
 616
 617     for (i = 0; i < (int) rrd->stat_head->rra_cnt; i++) {
 618         /* last row in the xml file is the most recent; as
 619          * rrd_update increments the current row pointer, set cur_row
 620          * here to the last row. */
 621         rrd->rra_ptr[i].cur_row = rrd->rra_def[i].row_cnt - 1;
 622     }
 623     if (ptr == NULL)
 624         return -1;
 625     return 1;
 626 }
 627
 628
 629
 630
 631
 632 /* create and empty rrd file according to the specs given */
 633
 634 int rrd_creat(
 635     char *file_name,
 636     rrd_t *rrd,
 637     char force_overwrite)
 638 {
 639     unsigned long i, ii, val_cnt;
 640     FILE     *rrd_file = NULL;
 641     int       fdflags;
 642     int       fd;
 643
 644     if (strcmp("-", file_name) == 0) {
 645         rrd_file = stdout;
 646     } else {
 647 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
 648         fdflags = O_RDWR | O_BINARY | O_CREAT;
 649 #else
 650         fdflags = O_WRONLY | O_CREAT;
 651 #endif
 652         if (force_overwrite == 0) {
 653             fdflags |= O_EXCL;
 654         }
 655         fd = open(file_name, fdflags, 0666);
 656         if (fd == -1 || (rrd_file = fdopen(fd, "wb")) == NULL) {
 657             rrd_set_error("creating '%s': %s", file_name,
 658                           rrd_strerror(errno));
 659             if (fd != -1)
 660                 close(fd);
 661             return (-1);
 662         }
 663     }
 664     fwrite(rrd->stat_head, sizeof(stat_head_t), 1, rrd_file);
 665
 666     fwrite(rrd->ds_def, sizeof(ds_def_t), rrd->stat_head->ds_cnt, rrd_file);
 667
 668     fwrite(rrd->rra_def,
 669            sizeof(rra_def_t), rrd->stat_head->rra_cnt, rrd_file);
 670
 671     fwrite(rrd->live_head, sizeof(live_head_t), 1, rrd_file);
 672
 673     fwrite(rrd->pdp_prep, sizeof(pdp_prep_t), rrd->stat_head->ds_cnt,
 674            rrd_file);
 675
 676     fwrite(rrd->cdp_prep, sizeof(cdp_prep_t), rrd->stat_head->rra_cnt *
 677            rrd->stat_head->ds_cnt, rrd_file);
 678     fwrite(rrd->rra_ptr, sizeof(rra_ptr_t), rrd->stat_head->rra_cnt,
 679            rrd_file);
 680
 681
 682
 683     /* calculate the number of rrd_values to dump */
 684     val_cnt = 0;
 685     for (i = 0; i < rrd->stat_head->rra_cnt; i++)
 686         for (ii = 0; ii < rrd->rra_def[i].row_cnt * rrd->stat_head->ds_cnt;
 687              ii++)
 688             val_cnt++;
 689     fwrite(rrd->rrd_value, sizeof(rrd_value_t), val_cnt, rrd_file);
 690
 691     /* lets see if we had an error */
 692     if (ferror(rrd_file)) {
 693         rrd_set_error("a file error occurred while creating '%s'", file_name);
 694         fclose(rrd_file);
 695         return (-1);
 696     }
 697
 698     fclose(rrd_file);
 699     return 0;
 700 }
 701
 702
 703 int rrd_restore(
 704     int argc,
 705     char **argv)
 706 {
 707     rrd_t     rrd;
 708     char     *buf;
 709     char      rc = 0;
 710     char      force_overwrite = 0;
 711     struct option long_options[] = {
 712         {"range-check", no_argument, 0, 'r'},
 713         {"force-overwrite", no_argument, 0, 'f'},
 714         {0, 0, 0, 0}
 715     };
 716
 717     /* init rrd clean */
 718     optind = 0;
 719     opterr = 0;         /* initialize getopt */
 720     while (1) {
 721         int       option_index = 0;
 722         int       opt;
 723
 724         opt = getopt_long(argc, argv, "rf", long_options, &option_index);
 725
 726         if (opt == EOF)
 727             break;
 728
 729         switch (opt) {
 730         case 'r':
 731             rc = 1;
 732             break;
 733         case 'f':
 734             force_overwrite = 1;
 735             break;
 736         default:
 737             rrd_set_error
 738                 ("usage rrdtool %s [--range-check|-r] [--force-overwrite/-f]  file.xml file.rrd",
 739                  argv[0]);
 740             return -1;
 741             break;
 742         }
 743     }
 744
 745     if (argc - optind != 2) {
 746         rrd_set_error
 747             ("usage rrdtool %s [--range-check/-r] [--force-overwrite/-f] file.xml file.rrd",
 748              argv[0]);
 749         return -1;
 750     }
 751
 752     if (readfile(argv[optind], &buf, 0) == -1) {
 753         return -1;
 754     }
 755
 756     rrd_init(&rrd);
 757
 758     if (xml2rrd(buf, &rrd, rc) == -1) {
 759         rrd_free(&rrd);
 760         free(buf);
 761         return -1;
 762     }
 763
 764     free(buf);
 765
 766     if (rrd_creat(argv[optind + 1], &rrd, force_overwrite) == -1) {
 767         rrd_free(&rrd);
 768         return -1;
 769     };
 770     rrd_free(&rrd);
 771     return 0;
 772 }
 773
 774 /* a backwards compatibility routine that will parse the RRA params section
 775  * generated by the aberrant patch to 1.0.28. */
 776
 777 void parse_patch1028_RRA_params(
 778     char **buf,
 779     rrd_t *rrd,
 780     int rra_index)
 781 {
 782     int       i;
 783
 784     for (i = 0; i < MAX_RRA_PAR_EN; i++) {
 785         if (i == RRA_dependent_rra_idx ||
 786             i == RRA_seasonal_smooth_idx || i == RRA_failure_threshold)
 787             read_tag(buf, "value", "%lu",
 788                      &(rrd->rra_def[rra_index].par[i].u_cnt));
 789         else
 790             read_tag(buf, "value", "%lf",
 791                      &(rrd->rra_def[rra_index].par[i].u_val));
 792     }
 793 }
 794
 795 /* a backwards compatibility routine that will parse the CDP params section
 796  * generated by the aberrant patch to 1.0.28. */
 797 void parse_patch1028_CDP_params(
 798     char **buf,
 799     rrd_t *rrd,
 800     int rra_index,
 801     int ds_index)
 802 {
 803     int       ii;
 804
 805     for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
 806         if (cf_conv(rrd->rra_def[rra_index].cf_nam) == CF_FAILURES ||
 807             ii == CDP_unkn_pdp_cnt ||
 808             ii == CDP_null_count || ii == CDP_last_null_count) {
 809             read_tag(buf, "value", "%lu",
 810                      &(rrd->
 811                        cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 812                                 ds_index].scratch[ii].u_cnt));
 813         } else {
 814             read_tag(buf, "value", "%lf",
 815                      &(rrd->
 816                        cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 817                                 ds_index].scratch[ii].u_val));
 818         }
 819     }
 820 }
 821
 822 void parse_FAILURES_history(
 823     char **buf,
 824     rrd_t *rrd,
 825     int rra_index,
 826     int ds_index)
 827 {
 828     char      history[MAX_FAILURES_WINDOW_LEN + 1];
 829     char     *violations_array;
 830     unsigned short i;
 831
 832     /* 28 = MAX_FAILURES_WINDOW_LEN */
 833     read_tag(buf, "history", "%28[0-1]", history);
 834     violations_array =
 835         (char *) rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 836                                + ds_index].scratch;
 837
 838     for (i = 0; i < rrd->rra_def[rra_index].par[RRA_window_len].u_cnt; ++i)
 839         violations_array[i] = (history[i] == '1') ? 1 : 0;
 840
 841 }