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 only go over 3 if input is over 3 too */
 227     if (input_version > 3 ){
 228         strcpy(rrd->stat_head->version, RRD_VERSION);
 229     } else {
 230         strcpy(rrd->stat_head->version, RRD_VERSION3);
 231     }
 232
 233     rrd->stat_head->float_cookie = FLOAT_COOKIE;
 234     rrd->stat_head->ds_cnt = 0;
 235     rrd->stat_head->rra_cnt = 0;
 236     read_tag(&ptr, "step", "%lu", &(rrd->stat_head->pdp_step));
 237
 238     /* allocate live head */
 239     if ((rrd->live_head = calloc(1, sizeof(live_head_t))) == NULL) {
 240         rrd_set_error("allocating rrd.live_head");
 241         return -1;
 242     }
 243     read_tag(&ptr, "lastupdate", "%lu", &(rrd->live_head->last_up));
 244
 245     /* Data Source Definition Part */
 246     ptr2 = ptr;
 247     while (eat_tag(&ptr2, "ds") == 1) {
 248         rrd->stat_head->ds_cnt++;
 249         if ((rrd->ds_def =
 250              rrd_realloc(rrd->ds_def,
 251                          rrd->stat_head->ds_cnt * sizeof(ds_def_t))) ==
 252             NULL) {
 253             rrd_set_error("allocating rrd.ds_def");
 254             return -1;
 255         };
 256         /* clean out memory to make sure no data gets stored from previous tasks */
 257         memset(&(rrd->ds_def[rrd->stat_head->ds_cnt - 1]), 0,
 258                sizeof(ds_def_t));
 259         if ((rrd->pdp_prep =
 260              rrd_realloc(rrd->pdp_prep,
 261                          rrd->stat_head->ds_cnt * sizeof(pdp_prep_t))) ==
 262             NULL) {
 263             rrd_set_error("allocating pdp_prep");
 264             return (-1);
 265         }
 266         /* clean out memory to make sure no data gets stored from previous tasks */
 267         memset(&(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1]), 0,
 268                sizeof(pdp_prep_t));
 269
 270         read_tag(&ptr2, "name", DS_NAM_FMT,
 271                  rrd->ds_def[rrd->stat_head->ds_cnt - 1].ds_nam);
 272
 273         read_tag(&ptr2, "type", DST_FMT,
 274                  rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst);
 275         /* test for valid type */
 276         if ((int) dst_conv(rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst) == -1)
 277             return -1;
 278
 279         if (dst_conv(rrd->ds_def[rrd->stat_head->ds_cnt - 1].dst) != DST_CDEF) {
 280             read_tag(&ptr2, "minimal_heartbeat", "%lu",
 281                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 282                        par[DS_mrhb_cnt].u_cnt));
 283             read_tag(&ptr2, "min", "%lf",
 284                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 285                        par[DS_min_val].u_val));
 286             read_tag(&ptr2, "max", "%lf",
 287                      &(rrd->ds_def[rrd->stat_head->ds_cnt - 1].
 288                        par[DS_max_val].u_val));
 289         } else {        /* DST_CDEF */
 290             char      buffer[1024];
 291
 292             read_tag(&ptr2, "cdef", "%1000s", buffer);
 293             parseCDEF_DS(buffer, rrd, rrd->stat_head->ds_cnt - 1);
 294             if (rrd_test_error())
 295                 return -1;
 296         }
 297
 298         read_tag(&ptr2, "last_ds", "%30s",
 299                  rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].last_ds);
 300         read_tag(&ptr2, "value", "%lf",
 301                  &(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].scratch[PDP_val].
 302                    u_val));
 303         read_tag(&ptr2, "unknown_sec", "%lu",
 304                  &(rrd->pdp_prep[rrd->stat_head->ds_cnt - 1].
 305                    scratch[PDP_unkn_sec_cnt].u_cnt));
 306         eat_tag(&ptr2, "/ds");
 307         ptr = ptr2;
 308     }
 309
 310     ptr2 = ptr;
 311     while (eat_tag(&ptr2, "rra") == 1) {
 312         rrd->stat_head->rra_cnt++;
 313
 314         /* allocate and reset rra definition areas */
 315         if ((rrd->rra_def =
 316              rrd_realloc(rrd->rra_def,
 317                          rrd->stat_head->rra_cnt * sizeof(rra_def_t))) ==
 318             NULL) {
 319             rrd_set_error("allocating rra_def");
 320             return -1;
 321         }
 322         memset(&(rrd->rra_def[rrd->stat_head->rra_cnt - 1]), 0,
 323                sizeof(rra_def_t));
 324
 325         /* allocate and reset consolidation point areas */
 326         if ((rrd->cdp_prep = rrd_realloc(rrd->cdp_prep,
 327                                          rrd->stat_head->rra_cnt
 328                                          * rrd->stat_head->ds_cnt *
 329                                          sizeof(cdp_prep_t))) == NULL) {
 330             rrd_set_error("allocating cdp_prep");
 331             return -1;
 332         }
 333
 334         memset(&
 335                (rrd->
 336                 cdp_prep[rrd->stat_head->ds_cnt *
 337                          (rrd->stat_head->rra_cnt - 1)]), 0,
 338                rrd->stat_head->ds_cnt * sizeof(cdp_prep_t));
 339
 340
 341         read_tag(&ptr2, "cf", CF_NAM_FMT,
 342                  rrd->rra_def[rrd->stat_head->rra_cnt - 1].cf_nam);
 343         /* test for valid type */
 344         if ((int) cf_conv(rrd->rra_def[rrd->stat_head->rra_cnt - 1].cf_nam) ==
 345             -1)
 346             return -1;
 347
 348         read_tag(&ptr2, "pdp_per_row", "%lu",
 349                  &(rrd->rra_def[rrd->stat_head->rra_cnt - 1].pdp_cnt));
 350         /* support to read RRA parameters */
 351         rra_index = rrd->stat_head->rra_cnt - 1;
 352         if (input_version < 2) {
 353             read_tag(&ptr2, "xff", "%lf",
 354                      &(rrd->rra_def[rra_index].par[RRA_cdp_xff_val].u_val));
 355         } else {
 356             if (eat_tag(&ptr2, "params") != 1) {
 357                 rrd_set_error("could not find params tag to eat and skip");
 358                 return -1;
 359             }
 360             skip(&ptr2);
 361             /* backwards compatibility w/ old patch */
 362             if (strncmp(ptr2, "<value>", 7) == 0) {
 363                 parse_patch1028_RRA_params(&ptr2, rrd, rra_index);
 364             } else {
 365                 switch (cf_conv(rrd->rra_def[rra_index].cf_nam)) {
 366                 case CF_HWPREDICT:
 367                 case CF_MHWPREDICT:
 368                     read_tag(&ptr2, "hw_alpha", "%lf",
 369                              &(rrd->rra_def[rra_index].par[RRA_hw_alpha].
 370                                u_val));
 371                     read_tag(&ptr2, "hw_beta", "%lf",
 372                              &(rrd->rra_def[rra_index].par[RRA_hw_beta].
 373                                u_val));
 374                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 375                              &(rrd->rra_def[rra_index].
 376                                par[RRA_dependent_rra_idx].u_cnt));
 377                     break;
 378                 case CF_SEASONAL:
 379                 case CF_DEVSEASONAL:
 380                     read_tag(&ptr2, "seasonal_gamma", "%lf",
 381                              &(rrd->rra_def[rra_index].
 382                                par[RRA_seasonal_gamma].u_val));
 383                     read_tag(&ptr2, "seasonal_smooth_idx", "%lu",
 384                              &(rrd->rra_def[rra_index].
 385                                par[RRA_seasonal_smooth_idx].u_cnt));
 386                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 387                              &(rrd->rra_def[rra_index].
 388                                par[RRA_dependent_rra_idx].u_cnt));
 389                     break;
 390                 case CF_FAILURES:
 391                     read_tag(&ptr2, "delta_pos", "%lf",
 392                              &(rrd->rra_def[rra_index].par[RRA_delta_pos].
 393                                u_val));
 394                     read_tag(&ptr2, "delta_neg", "%lf",
 395                              &(rrd->rra_def[rra_index].par[RRA_delta_neg].
 396                                u_val));
 397                     read_tag(&ptr2, "window_len", "%lu",
 398                              &(rrd->rra_def[rra_index].par[RRA_window_len].
 399                                u_cnt));
 400                     read_tag(&ptr2, "failure_threshold", "%lu",
 401                              &(rrd->rra_def[rra_index].
 402                                par[RRA_failure_threshold].u_cnt));
 403                     /* fall thru */
 404                 case CF_DEVPREDICT:
 405                     read_tag(&ptr2, "dependent_rra_idx", "%lu",
 406                              &(rrd->rra_def[rra_index].
 407                                par[RRA_dependent_rra_idx].u_cnt));
 408                     break;
 409                 case CF_AVERAGE:
 410                 case CF_MAXIMUM:
 411                 case CF_MINIMUM:
 412                 case CF_LAST:
 413                 default:
 414                     read_tag(&ptr2, "xff", "%lf",
 415                              &(rrd->rra_def[rra_index].par[RRA_cdp_xff_val].
 416                                u_val));
 417                 }
 418             }
 419             eat_tag(&ptr2, "/params");
 420         }
 421
 422
 423         eat_tag(&ptr2, "cdp_prep");
 424         for (i = 0; i < (int) rrd->stat_head->ds_cnt; i++) {
 425             eat_tag(&ptr2, "ds");
 426             /* support to read CDP parameters */
 427             rra_index = rrd->stat_head->rra_cnt - 1;
 428             skip(&ptr2);
 429             if (input_version < 2) {
 430                 rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 431                               i].scratch[CDP_primary_val].u_val = 0.0;
 432                 rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 433                               i].scratch[CDP_secondary_val].u_val = 0.0;
 434                 read_tag(&ptr2, "value", "%lf",
 435                          &(rrd->
 436                            cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 437                                     i].scratch[CDP_val].u_val));
 438                 read_tag(&ptr2, "unknown_datapoints", "%lu",
 439                          &(rrd->
 440                            cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 441                                     i].scratch[CDP_unkn_pdp_cnt].u_cnt));
 442             } else {
 443
 444                 if (strncmp(ptr2, "<value>", 7) == 0) {
 445                     parse_patch1028_CDP_params(&ptr2, rrd, rra_index, i);
 446                 } else {
 447                     read_tag(&ptr2, "primary_value", "%lf",
 448                              &(rrd->
 449                                cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 450                                         + i].scratch[CDP_primary_val].u_val));
 451                     read_tag(&ptr2, "secondary_value", "%lf",
 452                              &(rrd->
 453                                cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 454                                         +
 455                                         i].scratch[CDP_secondary_val].u_val));
 456                     switch (cf_conv(rrd->rra_def[rra_index].cf_nam)) {
 457                     case CF_HWPREDICT:
 458                     case CF_MHWPREDICT:
 459                         read_tag(&ptr2, "intercept", "%lf",
 460                                  &(rrd->
 461                                    cdp_prep[rrd->stat_head->ds_cnt *
 462                                             (rra_index)
 463                                             +
 464                                             i].scratch[CDP_hw_intercept].
 465                                    u_val));
 466                         read_tag(&ptr2, "last_intercept", "%lf",
 467                                  &(rrd->
 468                                    cdp_prep[rrd->stat_head->ds_cnt *
 469                                             (rra_index)
 470                                             +
 471                                             i].scratch[CDP_hw_last_intercept].
 472                                    u_val));
 473                         read_tag(&ptr2, "slope", "%lf",
 474                                  &(rrd->
 475                                    cdp_prep[rrd->stat_head->ds_cnt *
 476                                             (rra_index)
 477                                             +
 478                                             i].scratch[CDP_hw_slope].u_val));
 479                         read_tag(&ptr2, "last_slope", "%lf",
 480                                  &(rrd->
 481                                    cdp_prep[rrd->stat_head->ds_cnt *
 482                                             (rra_index)
 483                                             +
 484                                             i].scratch[CDP_hw_last_slope].
 485                                    u_val));
 486                         read_tag(&ptr2, "nan_count", "%lu",
 487                                  &(rrd->
 488                                    cdp_prep[rrd->stat_head->ds_cnt *
 489                                             (rra_index)
 490                                             +
 491                                             i].scratch[CDP_null_count].
 492                                    u_cnt));
 493                         read_tag(&ptr2, "last_nan_count", "%lu",
 494                                  &(rrd->
 495                                    cdp_prep[rrd->stat_head->ds_cnt *
 496                                             (rra_index)
 497                                             +
 498                                             i].scratch[CDP_last_null_count].
 499                                    u_cnt));
 500                         break;
 501                     case CF_SEASONAL:
 502                     case CF_DEVSEASONAL:
 503                         read_tag(&ptr2, "seasonal", "%lf",
 504                                  &(rrd->
 505                                    cdp_prep[rrd->stat_head->ds_cnt *
 506                                             (rra_index)
 507                                             +
 508                                             i].scratch[CDP_hw_seasonal].
 509                                    u_val));
 510                         read_tag(&ptr2, "last_seasonal", "%lf",
 511                                  &(rrd->
 512                                    cdp_prep[rrd->stat_head->ds_cnt *
 513                                             (rra_index)
 514                                             +
 515                                             i].scratch[CDP_hw_last_seasonal].
 516                                    u_val));
 517                         read_tag(&ptr2, "init_flag", "%lu",
 518                                  &(rrd->
 519                                    cdp_prep[rrd->stat_head->ds_cnt *
 520                                             (rra_index)
 521                                             +
 522                                             i].scratch[CDP_init_seasonal].
 523                                    u_cnt));
 524                         break;
 525                     case CF_DEVPREDICT:
 526                         break;
 527                     case CF_FAILURES:
 528                         parse_FAILURES_history(&ptr2, rrd, rra_index, i);
 529                         break;
 530                     case CF_AVERAGE:
 531                     case CF_MAXIMUM:
 532                     case CF_MINIMUM:
 533                     case CF_LAST:
 534                     default:
 535                         read_tag(&ptr2, "value", "%lf",
 536                                  &(rrd->
 537                                    cdp_prep[rrd->stat_head->ds_cnt *
 538                                             (rra_index) +
 539                                             i].scratch[CDP_val].u_val));
 540                         read_tag(&ptr2, "unknown_datapoints", "%lu",
 541                                  &(rrd->
 542                                    cdp_prep[rrd->stat_head->ds_cnt *
 543                                             (rra_index) +
 544                                             i].scratch[CDP_unkn_pdp_cnt].
 545                                    u_cnt));
 546                         break;
 547                     }
 548                 }
 549             }
 550             eat_tag(&ptr2, "/ds");
 551         }
 552         eat_tag(&ptr2, "/cdp_prep");
 553         rrd->rra_def[rrd->stat_head->rra_cnt - 1].row_cnt = 0;
 554         eat_tag(&ptr2, "database");
 555         ptr3 = ptr2;
 556         while (eat_tag(&ptr3, "row") == 1) {
 557
 558             if (mempool == 0) {
 559                 mempool = 1000;
 560                 if ((rrd->rrd_value = rrd_realloc(rrd->rrd_value,
 561                                                   (rows +
 562                                                    mempool) *
 563                                                   (rrd->stat_head->ds_cnt)
 564                                                   * sizeof(rrd_value_t))) ==
 565                     NULL) {
 566                     rrd_set_error("allocating rrd_values");
 567                     return -1;
 568                 }
 569             }
 570             rows++;
 571             mempool--;
 572             rrd->rra_def[rrd->stat_head->rra_cnt - 1].row_cnt++;
 573             for (i = 0; i < (int) rrd->stat_head->ds_cnt; i++) {
 574
 575                 rrd_value_t *value =
 576                     &(rrd->
 577                       rrd_value[(rows - 1) * rrd->stat_head->ds_cnt + i]);
 578
 579                 read_tag(&ptr3, "v", "%lf", value);
 580
 581                 if ((rc == 1)   /* do we have to check for the ranges */
 582                     &&(!isnan(*value))  /* not a NAN value */
 583                     &&(dst_conv(rrd->ds_def[i].dst) != DST_CDEF)
 584                     && (    /* min defined and in the range ? */
 585                            (!isnan(rrd->ds_def[i].par[DS_min_val].u_val)
 586                             && (*value <
 587                                 rrd->ds_def[i].par[DS_min_val].u_val))
 588                            ||   /* max defined and in the range ? */
 589                            (!isnan(rrd->ds_def[i].par[DS_max_val].u_val)
 590                             && (*value >
 591                                 rrd->ds_def[i].par[DS_max_val].u_val))
 592                     )
 593                     ) {
 594                     fprintf(stderr,
 595                             "out of range found [ds: %lu], [value : %0.10e]\n",
 596                             i, *value);
 597                     *value = DNAN;
 598                 }
 599             }
 600             eat_tag(&ptr3, "/row");
 601             ptr2 = ptr3;
 602         }
 603         eat_tag(&ptr2, "/database");
 604         eat_tag(&ptr2, "/rra");
 605         ptr = ptr2;
 606     }
 607     eat_tag(&ptr, "/rrd");
 608
 609     if ((rrd->rra_ptr =
 610          calloc(1, sizeof(rra_ptr_t) * rrd->stat_head->rra_cnt)) == NULL) {
 611         rrd_set_error("allocating rra_ptr");
 612         return (-1);
 613     }
 614
 615     for (i = 0; i < (int) rrd->stat_head->rra_cnt; i++) {
 616         /* last row in the xml file is the most recent; as
 617          * rrd_update increments the current row pointer, set cur_row
 618          * here to the last row. */
 619         rrd->rra_ptr[i].cur_row = rrd->rra_def[i].row_cnt - 1;
 620     }
 621     if (ptr == NULL)
 622         return -1;
 623     return 1;
 624 }
 625
 626
 627
 628
 629
 630 /* create and empty rrd file according to the specs given */
 631
 632 int rrd_creat(
 633     char *file_name,
 634     rrd_t *rrd,
 635     char force_overwrite)
 636 {
 637     unsigned long i, ii, val_cnt;
 638     FILE     *rrd_file = NULL;
 639     int       fdflags;
 640     int       fd;
 641
 642     if (strcmp("-", file_name) == 0) {
 643         rrd_file = stdout;
 644     } else {
 645 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
 646         fdflags = O_RDWR | O_BINARY | O_CREAT;
 647 #else
 648         fdflags = O_WRONLY | O_CREAT;
 649 #endif
 650         if (force_overwrite == 0) {
 651             fdflags |= O_EXCL;
 652         }
 653         fd = open(file_name, fdflags, 0666);
 654         if (fd == -1 || (rrd_file = fdopen(fd, "wb")) == NULL) {
 655             rrd_set_error("creating '%s': %s", file_name,
 656                           rrd_strerror(errno));
 657             if (fd != -1)
 658                 close(fd);
 659             return (-1);
 660         }
 661     }
 662     fwrite(rrd->stat_head, sizeof(stat_head_t), 1, rrd_file);
 663
 664     fwrite(rrd->ds_def, sizeof(ds_def_t), rrd->stat_head->ds_cnt, rrd_file);
 665
 666     fwrite(rrd->rra_def,
 667            sizeof(rra_def_t), rrd->stat_head->rra_cnt, rrd_file);
 668
 669     fwrite(rrd->live_head, sizeof(live_head_t), 1, rrd_file);
 670
 671     fwrite(rrd->pdp_prep, sizeof(pdp_prep_t), rrd->stat_head->ds_cnt,
 672            rrd_file);
 673
 674     fwrite(rrd->cdp_prep, sizeof(cdp_prep_t), rrd->stat_head->rra_cnt *
 675            rrd->stat_head->ds_cnt, rrd_file);
 676     fwrite(rrd->rra_ptr, sizeof(rra_ptr_t), rrd->stat_head->rra_cnt,
 677            rrd_file);
 678
 679
 680
 681     /* calculate the number of rrd_values to dump */
 682     val_cnt = 0;
 683     for (i = 0; i < rrd->stat_head->rra_cnt; i++)
 684         for (ii = 0; ii < rrd->rra_def[i].row_cnt * rrd->stat_head->ds_cnt;
 685              ii++)
 686             val_cnt++;
 687     fwrite(rrd->rrd_value, sizeof(rrd_value_t), val_cnt, rrd_file);
 688
 689     /* lets see if we had an error */
 690     if (ferror(rrd_file)) {
 691         rrd_set_error("a file error occurred while creating '%s'", file_name);
 692         fclose(rrd_file);
 693         return (-1);
 694     }
 695
 696     fclose(rrd_file);
 697     return 0;
 698 }
 699
 700
 701 int rrd_restore(
 702     int argc,
 703     char **argv)
 704 {
 705     rrd_t     rrd;
 706     char     *buf;
 707     char      rc = 0;
 708     char      force_overwrite = 0;
 709     struct option long_options[] = {
 710         {"range-check", no_argument, 0, 'r'},
 711         {"force-overwrite", no_argument, 0, 'f'},
 712         {0, 0, 0, 0}
 713     };
 714
 715     /* init rrd clean */
 716     optind = 0;
 717     opterr = 0;         /* initialize getopt */
 718     while (1) {
 719         int       option_index = 0;
 720         int       opt;
 721
 722         opt = getopt_long(argc, argv, "rf", long_options, &option_index);
 723
 724         if (opt == EOF)
 725             break;
 726
 727         switch (opt) {
 728         case 'r':
 729             rc = 1;
 730             break;
 731         case 'f':
 732             force_overwrite = 1;
 733             break;
 734         default:
 735             rrd_set_error
 736                 ("usage rrdtool %s [--range-check|-r] [--force-overwrite/-f]  file.xml file.rrd",
 737                  argv[0]);
 738             return -1;
 739             break;
 740         }
 741     }
 742
 743     if (argc - optind != 2) {
 744         rrd_set_error
 745             ("usage rrdtool %s [--range-check/-r] [--force-overwrite/-f] file.xml file.rrd",
 746              argv[0]);
 747         return -1;
 748     }
 749
 750     if (readfile(argv[optind], &buf, 0) == -1) {
 751         return -1;
 752     }
 753
 754     rrd_init(&rrd);
 755
 756     if (xml2rrd(buf, &rrd, rc) == -1) {
 757         rrd_free(&rrd);
 758         free(buf);
 759         return -1;
 760     }
 761
 762     free(buf);
 763
 764     if (rrd_creat(argv[optind + 1], &rrd, force_overwrite) == -1) {
 765         rrd_free(&rrd);
 766         return -1;
 767     };
 768     rrd_free(&rrd);
 769     return 0;
 770 }
 771
 772 /* a backwards compatibility routine that will parse the RRA params section
 773  * generated by the aberrant patch to 1.0.28. */
 774
 775 void parse_patch1028_RRA_params(
 776     char **buf,
 777     rrd_t *rrd,
 778     int rra_index)
 779 {
 780     int       i;
 781
 782     for (i = 0; i < MAX_RRA_PAR_EN; i++) {
 783         if (i == RRA_dependent_rra_idx ||
 784             i == RRA_seasonal_smooth_idx || i == RRA_failure_threshold)
 785             read_tag(buf, "value", "%lu",
 786                      &(rrd->rra_def[rra_index].par[i].u_cnt));
 787         else
 788             read_tag(buf, "value", "%lf",
 789                      &(rrd->rra_def[rra_index].par[i].u_val));
 790     }
 791 }
 792
 793 /* a backwards compatibility routine that will parse the CDP params section
 794  * generated by the aberrant patch to 1.0.28. */
 795 void parse_patch1028_CDP_params(
 796     char **buf,
 797     rrd_t *rrd,
 798     int rra_index,
 799     int ds_index)
 800 {
 801     int       ii;
 802
 803     for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
 804         if (cf_conv(rrd->rra_def[rra_index].cf_nam) == CF_FAILURES ||
 805             ii == CDP_unkn_pdp_cnt ||
 806             ii == CDP_null_count || ii == CDP_last_null_count) {
 807             read_tag(buf, "value", "%lu",
 808                      &(rrd->
 809                        cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 810                                 ds_index].scratch[ii].u_cnt));
 811         } else {
 812             read_tag(buf, "value", "%lf",
 813                      &(rrd->
 814                        cdp_prep[rrd->stat_head->ds_cnt * (rra_index) +
 815                                 ds_index].scratch[ii].u_val));
 816         }
 817     }
 818 }
 819
 820 void parse_FAILURES_history(
 821     char **buf,
 822     rrd_t *rrd,
 823     int rra_index,
 824     int ds_index)
 825 {
 826     char      history[MAX_FAILURES_WINDOW_LEN + 1];
 827     char     *violations_array;
 828     unsigned short i;
 829
 830     /* 28 = MAX_FAILURES_WINDOW_LEN */
 831     read_tag(buf, "history", "%28[0-1]", history);
 832     violations_array =
 833         (char *) rrd->cdp_prep[rrd->stat_head->ds_cnt * (rra_index)
 834                                + ds_index].scratch;
 835
 836     for (i = 0; i < rrd->rra_def[rra_index].par[RRA_window_len].u_cnt; ++i)
 837         violations_array[i] = (history[i] == '1') ? 1 : 0;
 838
 839 }