1 /*****************************************************************************
2 * RRDtool 1.3.7 Copyright by Tobi Oetiker, 1997-2009
3 * This file: Copyright 2008 Florian octo Forster
4 * Distributed under the GPL
5 *****************************************************************************
6 * rrd_restore.c Contains logic to parse XML input and create an RRD file
7 *****************************************************************************
8 * $Id: rrd_restore.c 1781 2009-04-07 07:31:53Z oetiker $
9 *************************************************************************** */
11 /*
12 * This program is free software; you can redistribute it and / or modify it
13 * under the terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 2 of the License, or (t your option)
15 * any later version.
16 *
17 * This program is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
20 * more details.
21 *
22 * You should have received a copy of the GNU General Public License along
23 * with this program; if not, write to the Free Software Foundation, Inc.,
24 * 51 Franklin St, Fifth Floor, Boston, MA 02110 - 1301 USA
25 *
26 * Authors:
27 * Florian octo Forster <octo at verplant.org>
28 **/
30 #include <stdlib.h>
31 #include <stdio.h>
32 #include <string.h>
33 #include <ctype.h>
34 #include <fcntl.h>
36 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
37 #include <math.h>
38 # include <io.h>
39 # define open _open
40 # define close _close
41 #else
42 # include <unistd.h>
43 #endif
45 #include <libxml/parser.h>
46 #include "rrd_tool.h"
47 #include "rrd_rpncalc.h"
48 #define ARRAY_LENGTH(a) (sizeof (a) / sizeof ((a)[0]))
49 static int opt_range_check = 0;
50 static int opt_force_overwrite = 0;
52 /*
53 * Auxiliary functions
54 */
55 static int get_string_from_node(
56 xmlDoc * doc,
57 xmlNode * node,
58 char *buffer,
59 size_t buffer_size)
60 {
61 xmlChar *temp0;
62 char *begin_ptr;
63 char *end_ptr;
65 temp0 = xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
66 if (temp0 == NULL) {
67 rrd_set_error("get_string_from_node: xmlNodeListGetString failed.");
68 return (-1);
69 }
71 begin_ptr = (char *) temp0;
72 while ((begin_ptr[0] != 0) && (isspace(begin_ptr[0])))
73 begin_ptr++;
75 if (begin_ptr[0] == 0) {
76 xmlFree(temp0);
77 buffer[0] = 0;
78 return (0);
79 }
81 end_ptr = begin_ptr;
82 while ((end_ptr[0] != 0) && (!isspace(end_ptr[0])))
83 end_ptr++;
84 end_ptr[0] = 0;
86 strncpy(buffer, begin_ptr, buffer_size);
87 buffer[buffer_size - 1] = 0;
89 xmlFree(temp0);
91 return (0);
92 } /* int get_string_from_node */
94 static int get_int_from_node(
95 xmlDoc * doc,
96 xmlNode * node,
97 int *value)
98 {
99 int temp;
100 char *str_ptr;
101 char *end_ptr;
103 str_ptr = (char *) xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
104 if (str_ptr == NULL) {
105 rrd_set_error("get_int_from_node: xmlNodeListGetString failed.");
106 return (-1);
107 }
109 end_ptr = NULL;
110 temp = strtol(str_ptr, &end_ptr, 0);
111 xmlFree(str_ptr);
113 if (str_ptr == end_ptr) {
114 rrd_set_error("get_int_from_node: Cannot parse buffer as int: %s",
115 str_ptr);
116 return (-1);
117 }
119 *value = temp;
121 return (0);
122 } /* int get_int_from_node */
124 static int get_double_from_node(
125 xmlDoc * doc,
126 xmlNode * node,
127 double *value)
128 {
129 double temp;
130 char *str_ptr;
131 char *end_ptr;
133 str_ptr = (char *) xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
134 if (str_ptr == NULL) {
135 rrd_set_error("get_double_from_node: xmlNodeListGetString failed.");
136 return (-1);
137 }
139 if (strstr(str_ptr, "NaN") != NULL)
140 {
141 *value = DNAN;
142 xmlFree(str_ptr);
143 return 0;
144 }
146 end_ptr = NULL;
147 temp = strtod(str_ptr, &end_ptr);
148 xmlFree(str_ptr);
150 if (str_ptr == end_ptr) {
151 rrd_set_error
152 ("get_double_from_node: Cannot parse buffer as double: %s",
153 str_ptr);
154 return (-1);
155 }
157 *value = temp;
159 return (0);
160 } /* int get_double_from_node */
162 static int value_check_range(
163 rrd_value_t *rrd_value,
164 const ds_def_t *ds_def)
165 {
166 double min;
167 double max;
169 if (opt_range_check == 0)
170 return (0);
172 min = ds_def->par[DS_min_val].u_val;
173 max = ds_def->par[DS_max_val].u_val;
175 if (((!isnan(min)) && (*rrd_value < min))
176 || ((!isnan(max)) && (*rrd_value > max)))
177 *rrd_value = DNAN;
179 return (0);
180 } /* int value_check_range */
182 /*
183 * Parse the <database> block within an RRA definition
184 */
185 static int parse_tag_rra_database_row(
186 xmlDoc * doc,
187 xmlNode * node,
188 rrd_t *rrd,
189 rrd_value_t *rrd_value)
190 {
191 unsigned int values_count = 0;
192 xmlNode *child;
193 int status;
195 status = 0;
196 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
197 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
198 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
199 /* ignore */ ;
200 else if (xmlStrcmp(child->name, (const xmlChar *) "v") == 0) {
201 if (values_count < rrd->stat_head->ds_cnt) {
202 status =
203 get_double_from_node(doc, child,
204 rrd_value + values_count);
205 if (status == 0)
206 value_check_range(rrd_value + values_count,
207 rrd->ds_def + values_count);
208 }
210 values_count++;
211 } else {
212 rrd_set_error("parse_tag_rra_database_row: Unknown tag: %s",
213 child->name);
214 status = -1;
215 }
217 if (status != 0)
218 break;
219 } /* for (child = node->xmlChildrenNode) */
221 if (values_count != rrd->stat_head->ds_cnt) {
222 rrd_set_error("parse_tag_rra_database_row: Row has %u values "
223 "and RRD has %lu data sources.",
224 values_count, rrd->stat_head->ds_cnt);
225 status = -1;
226 }
228 return (status);
229 } /* int parse_tag_rra_database_row */
231 static int parse_tag_rra_database(
232 xmlDoc * doc,
233 xmlNode * node,
234 rrd_t *rrd)
235 {
236 rra_def_t *cur_rra_def;
237 unsigned int total_row_cnt;
238 xmlNode *child;
239 int status;
240 int i;
242 total_row_cnt = 0;
243 for (i = 0; i < (((int) rrd->stat_head->rra_cnt) - 1); i++)
244 total_row_cnt += rrd->rra_def[i].row_cnt;
246 cur_rra_def = rrd->rra_def + i;
248 status = 0;
249 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
250 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
251 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
252 /* ignore */ ;
253 else if (xmlStrcmp(child->name, (const xmlChar *) "row") == 0) {
254 rrd_value_t *temp;
255 rrd_value_t *cur_rrd_value;
256 unsigned int total_values_count = rrd->stat_head->ds_cnt
257 * (total_row_cnt + 1);
259 /* Allocate space for the new values.. */
260 temp = (rrd_value_t *) realloc(rrd->rrd_value,
261 sizeof(rrd_value_t) *
262 total_values_count);
263 if (temp == NULL) {
264 rrd_set_error("parse_tag_rra_database: realloc failed.");
265 status = -1;
266 break;
267 }
268 rrd->rrd_value = temp;
269 cur_rrd_value = rrd->rrd_value
270 + (rrd->stat_head->ds_cnt * total_row_cnt);
271 memset(cur_rrd_value, '\0',
272 sizeof(rrd_value_t) * rrd->stat_head->ds_cnt);
273 total_row_cnt++;
274 cur_rra_def->row_cnt++;
276 status =
277 parse_tag_rra_database_row(doc, child, rrd, cur_rrd_value);
278 } /* if (xmlStrcmp (child->name, (const xmlChar *) "row") == 0) */
279 else {
280 rrd_set_error("parse_tag_rra_database: Unknown tag: %s",
281 child->name);
282 status = -1;
283 }
285 if (status != 0)
286 break;
287 } /* for (child = node->xmlChildrenNode) */
289 return (status);
290 } /* int parse_tag_rra_database */
292 /*
293 * Parse the <cdp_prep> block within an RRA definition
294 */
295 static int parse_tag_rra_cdp_prep_ds_history(
296 xmlDoc * doc,
297 xmlNode * node,
298 cdp_prep_t *cdp_prep)
299 {
300 /* Make `history_buffer' the same size as the scratch area, plus the
301 * terminating NULL byte. */
302 char history_buffer[sizeof(((cdp_prep_t *)0)->scratch) + 1];
303 char *history_ptr;
304 int status;
305 int i;
307 status = get_string_from_node(doc, node,
308 history_buffer, sizeof(history_buffer));
309 if (status != 0)
310 return (-1);
312 history_ptr = (char *) (&cdp_prep->scratch[0]);
313 for (i = 0; history_buffer[i] != '\0'; i++)
314 history_ptr[i] = (history_buffer[i] == '1') ? 1 : 0;
316 return (0);
317 } /* int parse_tag_rra_cdp_prep_ds_history */
319 static int parse_tag_rra_cdp_prep_ds(
320 xmlDoc * doc,
321 xmlNode * node,
322 rrd_t *rrd,
323 cdp_prep_t *cdp_prep)
324 {
325 xmlNode *child;
326 int status;
328 memset(cdp_prep, '\0', sizeof(cdp_prep_t));
330 status = 0;
331 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
332 if (atoi(rrd->stat_head->version) == 1) {
333 cdp_prep->scratch[CDP_primary_val].u_val = 0.0;
334 cdp_prep->scratch[CDP_secondary_val].u_val = 0.0;
335 }
336 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
337 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
338 /* ignore */ ;
339 else if (xmlStrcmp(child->name, (const xmlChar *) "primary_value") ==
340 0)
341 status =
342 get_double_from_node(doc, child,
343 &cdp_prep->scratch[CDP_primary_val].
344 u_val);
345 else if (xmlStrcmp(child->name, (const xmlChar *) "secondary_value")
346 == 0)
347 status =
348 get_double_from_node(doc, child,
349 &cdp_prep->scratch[CDP_secondary_val].
350 u_val);
351 else if (xmlStrcmp(child->name, (const xmlChar *) "intercept") == 0)
352 status = get_double_from_node(doc, child,
353 &cdp_prep->
354 scratch[CDP_hw_intercept].u_val);
355 else if (xmlStrcmp(child->name, (const xmlChar *) "last_intercept") ==
356 0)
357 status =
358 get_double_from_node(doc, child,
359 &cdp_prep->
360 scratch[CDP_hw_last_intercept].u_val);
361 else if (xmlStrcmp(child->name, (const xmlChar *) "slope") == 0)
362 status = get_double_from_node(doc, child,
363 &cdp_prep->scratch[CDP_hw_slope].
364 u_val);
365 else if (xmlStrcmp(child->name, (const xmlChar *) "last_slope") == 0)
366 status = get_double_from_node(doc, child,
367 &cdp_prep->
368 scratch[CDP_hw_last_slope].u_val);
369 else if (xmlStrcmp(child->name, (const xmlChar *) "nan_count") == 0)
370 status = get_int_from_node(doc, child,
371 (int *) &cdp_prep->
372 scratch[CDP_null_count].u_cnt);
373 else if (xmlStrcmp(child->name, (const xmlChar *) "last_nan_count") ==
374 0)
375 status =
376 get_int_from_node(doc, child,
377 (int *) &cdp_prep->
378 scratch[CDP_last_null_count].u_cnt);
379 else if (xmlStrcmp(child->name, (const xmlChar *) "seasonal") == 0)
380 status = get_double_from_node(doc, child,
381 &cdp_prep->scratch[CDP_hw_seasonal].
382 u_val);
383 else if (xmlStrcmp(child->name, (const xmlChar *) "last_seasonal") ==
384 0)
385 status =
386 get_double_from_node(doc, child,
387 &cdp_prep->scratch[CDP_hw_last_seasonal].
388 u_val);
389 else if (xmlStrcmp(child->name, (const xmlChar *) "init_flag") == 0)
390 status = get_int_from_node(doc, child,
391 (int *) &cdp_prep->
392 scratch[CDP_init_seasonal].u_cnt);
393 else if (xmlStrcmp(child->name, (const xmlChar *) "history") == 0)
394 status = parse_tag_rra_cdp_prep_ds_history(doc, child, cdp_prep);
395 else if (xmlStrcmp(child->name, (const xmlChar *) "value") == 0)
396 status = get_double_from_node(doc, child,
397 &cdp_prep->scratch[CDP_val].u_val);
398 else if (xmlStrcmp(child->name,
399 (const xmlChar *) "unknown_datapoints") == 0)
400 status = get_int_from_node(doc, child,
401 (int *) &cdp_prep->
402 scratch[CDP_unkn_pdp_cnt].u_cnt);
403 else {
404 rrd_set_error("parse_tag_rra_cdp_prep: Unknown tag: %s",
405 child->name);
406 status = -1;
407 }
409 if (status != 0)
410 break;
411 }
413 return (status);
414 } /* int parse_tag_rra_cdp_prep_ds */
416 static int parse_tag_rra_cdp_prep(
417 xmlDoc * doc,
418 xmlNode * node,
419 rrd_t *rrd,
420 cdp_prep_t *cdp_prep)
421 {
422 xmlNode *child;
423 int status;
425 unsigned int ds_count = 0;
427 status = 0;
428 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
429 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
430 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
431 /* ignore */ ;
432 else if (xmlStrcmp(child->name, (const xmlChar *) "ds") == 0) {
433 if (ds_count >= rrd->stat_head->ds_cnt)
434 status = -1;
435 else {
436 status = parse_tag_rra_cdp_prep_ds(doc, child, rrd,
437 cdp_prep + ds_count);
438 ds_count++;
439 }
440 } else {
441 rrd_set_error("parse_tag_rra_cdp_prep: Unknown tag: %s",
442 child->name);
443 status = -1;
444 }
446 if (status != 0)
447 break;
448 }
450 if (ds_count != rrd->stat_head->ds_cnt) {
451 rrd_set_error("parse_tag_rra_cdp_prep: There are %i data sources in "
452 "the RRD file, but %i in this cdp_prep block!",
453 (int) rrd->stat_head->ds_cnt, ds_count);
454 status = -1;
455 }
457 return (status);
458 } /* int parse_tag_rra_cdp_prep */
460 /*
461 * Parse the <params> block within an RRA definition
462 */
463 static int parse_tag_rra_params(
464 xmlDoc * doc,
465 xmlNode * node,
466 rra_def_t *rra_def)
467 {
468 xmlNode *child;
469 int status;
471 status = 0;
472 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
473 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
474 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
475 /* ignore */ ;
476 /*
477 * Parameters for CF_HWPREDICT
478 */
479 else if (xmlStrcmp(child->name, (const xmlChar *) "hw_alpha") == 0)
480 status = get_double_from_node(doc, child,
481 &rra_def->par[RRA_hw_alpha].u_val);
482 else if (xmlStrcmp(child->name, (const xmlChar *) "hw_beta") == 0)
483 status = get_double_from_node(doc, child,
484 &rra_def->par[RRA_hw_beta].u_val);
485 else if (xmlStrcmp(child->name,
486 (const xmlChar *) "dependent_rra_idx") == 0)
487 status = get_int_from_node(doc, child,
488 (int *) &rra_def->
489 par[RRA_dependent_rra_idx].u_cnt);
490 /*
491 * Parameters for CF_SEASONAL and CF_DEVSEASONAL
492 */
493 else if (xmlStrcmp(child->name, (const xmlChar *) "seasonal_gamma") ==
494 0)
495 status =
496 get_double_from_node(doc, child,
497 &rra_def->par[RRA_seasonal_gamma].u_val);
498 else if (xmlStrcmp
499 (child->name, (const xmlChar *) "seasonal_smooth_idx") == 0)
500 status =
501 get_int_from_node(doc, child,
502 (int *) &rra_def->
503 par[RRA_seasonal_smooth_idx].u_cnt);
504 else if (xmlStrcmp(child->name, (const xmlChar *) "smoothing_window")
505 == 0)
506 status =
507 get_double_from_node(doc, child,
508 &rra_def->
509 par[RRA_seasonal_smoothing_window].
510 u_val);
511 /* else if (dependent_rra_idx) ...; */
512 /*
513 * Parameters for CF_FAILURES
514 */
515 else if (xmlStrcmp(child->name, (const xmlChar *) "delta_pos") == 0)
516 status = get_double_from_node(doc, child,
517 &rra_def->par[RRA_delta_pos].u_val);
518 else if (xmlStrcmp(child->name, (const xmlChar *) "delta_neg") == 0)
519 status = get_double_from_node(doc, child,
520 &rra_def->par[RRA_delta_neg].u_val);
521 else if (xmlStrcmp(child->name, (const xmlChar *) "window_len") == 0)
522 status = get_int_from_node(doc, child,
523 (int *) &rra_def->par[RRA_window_len].
524 u_cnt);
525 else if (xmlStrcmp(child->name, (const xmlChar *) "failure_threshold")
526 == 0)
527 status =
528 get_int_from_node(doc, child,
529 (int *) &rra_def->
530 par[RRA_failure_threshold].u_cnt);
531 /*
532 * Parameters for CF_AVERAGE, CF_MAXIMUM, CF_MINIMUM, and CF_LAST
533 */
534 else if (xmlStrcmp(child->name, (const xmlChar *) "xff") == 0)
535 status = get_double_from_node(doc, child,
536 &rra_def->par[RRA_cdp_xff_val].
537 u_val);
538 /*
539 * Compatibility code for 1.0.49
540 */
541 else if (xmlStrcmp(child->name, (const xmlChar *) "value") == 0) { /* {{{ */
542 unsigned int i = 0;
544 while (42) {
545 if (i >= ARRAY_LENGTH(rra_def->par)) {
546 status = -1;
547 break;
548 }
550 if ((i == RRA_dependent_rra_idx)
551 || (i == RRA_seasonal_smooth_idx)
552 || (i == RRA_failure_threshold))
553 status = get_int_from_node(doc, child,
554 (int *) &rra_def->par[i].
555 u_cnt);
556 else
557 status = get_double_from_node(doc, child,
558 &rra_def->par[i].u_val);
560 if (status != 0)
561 break;
563 /* When this loops exits (sucessfully) `child' points to the last
564 * `value' tag in the list. */
565 if ((child->next == NULL)
566 || (xmlStrcmp(child->name, (const xmlChar *) "value") !=
567 0))
568 break;
570 child = child->next;
571 i++;
572 }
573 } /* }}} */
574 else {
575 rrd_set_error("parse_tag_rra_params: Unknown tag: %s",
576 child->name);
577 status = -1;
578 }
580 if (status != 0)
581 break;
582 }
584 return (status);
585 } /* int parse_tag_rra_params */
587 /*
588 * Parse an RRA definition
589 */
590 static int parse_tag_rra_cf(
591 xmlDoc * doc,
592 xmlNode * node,
593 rra_def_t *rra_def)
594 {
595 int status;
597 status = get_string_from_node(doc, node,
598 rra_def->cf_nam, sizeof(rra_def->cf_nam));
599 if (status != 0)
600 return (-1);
602 status = cf_conv(rra_def->cf_nam);
603 if (status == -1) {
604 rrd_set_error("parse_tag_rra_cf: Unknown consolidation function: %s",
605 rra_def->cf_nam);
606 return (-1);
607 }
609 return (0);
610 } /* int parse_tag_rra_cf */
612 static int parse_tag_rra(
613 xmlDoc * doc,
614 xmlNode * node,
615 rrd_t *rrd)
616 {
617 xmlNode *child;
618 int status;
620 rra_def_t *cur_rra_def;
621 cdp_prep_t *cur_cdp_prep;
622 rra_ptr_t *cur_rra_ptr;
624 /* Allocate more rra_def space for this RRA */
625 { /* {{{ */
626 rra_def_t *temp;
628 temp = (rra_def_t *) realloc(rrd->rra_def,
629 sizeof(rra_def_t) *
630 (rrd->stat_head->rra_cnt + 1));
631 if (temp == NULL) {
632 rrd_set_error("parse_tag_rra: realloc failed.");
633 return (-1);
634 }
635 rrd->rra_def = temp;
636 cur_rra_def = rrd->rra_def + rrd->stat_head->rra_cnt;
637 memset(cur_rra_def, '\0', sizeof(rra_def_t));
638 } /* }}} */
640 /* allocate cdp_prep_t */
641 { /* {{{ */
642 cdp_prep_t *temp;
644 temp = (cdp_prep_t *) realloc(rrd->cdp_prep, sizeof(cdp_prep_t)
645 * rrd->stat_head->ds_cnt
646 * (rrd->stat_head->rra_cnt + 1));
647 if (temp == NULL) {
648 rrd_set_error("parse_tag_rra: realloc failed.");
649 return (-1);
650 }
651 rrd->cdp_prep = temp;
652 cur_cdp_prep = rrd->cdp_prep
653 + (rrd->stat_head->ds_cnt * rrd->stat_head->rra_cnt);
654 memset(cur_cdp_prep, '\0',
655 sizeof(cdp_prep_t) * rrd->stat_head->ds_cnt);
656 } /* }}} */
658 /* allocate rra_ptr_t */
659 { /* {{{ */
660 rra_ptr_t *temp;
662 temp = (rra_ptr_t *) realloc(rrd->rra_ptr,
663 sizeof(rra_ptr_t) *
664 (rrd->stat_head->rra_cnt + 1));
665 if (temp == NULL) {
666 rrd_set_error("parse_tag_rra: realloc failed.");
667 return (-1);
668 }
669 rrd->rra_ptr = temp;
670 cur_rra_ptr = rrd->rra_ptr + rrd->stat_head->rra_cnt;
671 memset(cur_rra_ptr, '\0', sizeof(rra_ptr_t));
672 } /* }}} */
674 /* All space successfully allocated, increment number of RRAs. */
675 rrd->stat_head->rra_cnt++;
677 status = 0;
678 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
679 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
680 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
681 /* ignore */ ;
682 else if (xmlStrcmp(child->name, (const xmlChar *) "cf") == 0)
683 status = parse_tag_rra_cf(doc, child, cur_rra_def);
684 else if (xmlStrcmp(child->name, (const xmlChar *) "pdp_per_row") == 0)
685 status = get_int_from_node(doc, child,
686 (int *) &cur_rra_def->pdp_cnt);
687 else if (atoi(rrd->stat_head->version) == 1
688 && xmlStrcmp(child->name, (const xmlChar *) "xff") == 0)
689 status = get_double_from_node(doc, child,
690 (double *) &cur_rra_def->
691 par[RRA_cdp_xff_val].u_val);
692 else if (atoi(rrd->stat_head->version) >= 2
693 && xmlStrcmp(child->name, (const xmlChar *) "params") == 0)
694 status = parse_tag_rra_params(doc, child, cur_rra_def);
695 else if (xmlStrcmp(child->name, (const xmlChar *) "cdp_prep") == 0)
696 status = parse_tag_rra_cdp_prep(doc, child, rrd, cur_cdp_prep);
697 else if (xmlStrcmp(child->name, (const xmlChar *) "database") == 0)
698 status = parse_tag_rra_database(doc, child, rrd);
699 else {
700 rrd_set_error("parse_tag_rra: Unknown tag: %s", child->name);
701 status = -1;
702 }
704 if (status != 0)
705 break;
706 }
708 /* Set the RRA pointer to a random location */
709 #ifdef WIN32
710 cur_rra_ptr->cur_row = rand() % cur_rra_def->row_cnt;
711 #else
712 cur_rra_ptr->cur_row = random() % cur_rra_def->row_cnt;
713 #endif
715 return (status);
716 } /* int parse_tag_rra */
718 /*
719 * Parse a DS definition
720 */
721 static int parse_tag_ds_cdef(
722 xmlDoc * doc,
723 xmlNode * node,
724 rrd_t *rrd)
725 {
726 char buffer[1024];
727 int status;
729 status = get_string_from_node(doc, node, buffer, sizeof(buffer));
730 if (status != 0)
731 return (-1);
733 /* We're always working on the last DS that has been added to the structure
734 * when we get here */
735 parseCDEF_DS(buffer, rrd, rrd->stat_head->ds_cnt - 1);
737 return (0);
738 } /* int parse_tag_ds_cdef */
740 static int parse_tag_ds_type(
741 xmlDoc * doc,
742 xmlNode * node,
743 ds_def_t *ds_def)
744 {
745 int status;
747 status = get_string_from_node(doc, node,
748 ds_def->dst, sizeof(ds_def->dst));
749 if (status != 0)
750 return (-1);
752 status = dst_conv(ds_def->dst);
753 if (status == -1) {
754 rrd_set_error("parse_tag_ds_type: Unknown data source type: %s",
755 ds_def->dst);
756 return (-1);
757 }
759 return (0);
760 } /* int parse_tag_ds_type */
762 static int parse_tag_ds(
763 xmlDoc * doc,
764 xmlNode * node,
765 rrd_t *rrd)
766 {
767 xmlNode *child;
768 int status;
770 ds_def_t *cur_ds_def;
771 pdp_prep_t *cur_pdp_prep;
773 /*
774 * If there are DS definitions after RRA definitions the number of values,
775 * cdp_prep areas and so on will be calculated wrong. Thus, enforce a
776 * specific order in this case.
777 */
778 if (rrd->stat_head->rra_cnt > 0) {
779 rrd_set_error("parse_tag_ds: All data source definitions MUST "
780 "precede the RRA definitions!");
781 return (-1);
782 }
784 /* Allocate space for the new DS definition */
785 { /* {{{ */
786 ds_def_t *temp;
788 temp = (ds_def_t *) realloc(rrd->ds_def,
789 sizeof(ds_def_t) *
790 (rrd->stat_head->ds_cnt + 1));
791 if (temp == NULL) {
792 rrd_set_error("parse_tag_ds: malloc failed.");
793 return (-1);
794 }
795 rrd->ds_def = temp;
796 cur_ds_def = rrd->ds_def + rrd->stat_head->ds_cnt;
797 memset(cur_ds_def, '\0', sizeof(ds_def_t));
798 } /* }}} */
800 /* Allocate pdp_prep space for the new DS definition */
801 { /* {{{ */
802 pdp_prep_t *temp;
804 temp = (pdp_prep_t *) realloc(rrd->pdp_prep,
805 sizeof(pdp_prep_t) *
806 (rrd->stat_head->ds_cnt + 1));
807 if (temp == NULL) {
808 rrd_set_error("parse_tag_ds: malloc failed.");
809 return (-1);
810 }
811 rrd->pdp_prep = temp;
812 cur_pdp_prep = rrd->pdp_prep + rrd->stat_head->ds_cnt;
813 memset(cur_pdp_prep, '\0', sizeof(pdp_prep_t));
814 } /* }}} */
816 /* All allocations successful, let's increment the number of DSes. */
817 rrd->stat_head->ds_cnt++;
819 status = 0;
820 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
821 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
822 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
823 /* ignore */ ;
824 else if (xmlStrcmp(child->name, (const xmlChar *) "name") == 0)
825 status = get_string_from_node(doc, child,
826 cur_ds_def->ds_nam,
827 sizeof(cur_ds_def->ds_nam));
828 else if (xmlStrcmp(child->name, (const xmlChar *) "type") == 0)
829 status = parse_tag_ds_type(doc, child, cur_ds_def);
830 else if (xmlStrcmp(child->name,
831 (const xmlChar *) "minimal_heartbeat") == 0)
832 status = get_int_from_node(doc, child,
833 (int *) &cur_ds_def->par[DS_mrhb_cnt].
834 u_cnt);
835 else if (xmlStrcmp(child->name, (const xmlChar *) "min") == 0)
836 status = get_double_from_node(doc, child,
837 &cur_ds_def->par[DS_min_val].u_val);
838 else if (xmlStrcmp(child->name, (const xmlChar *) "max") == 0)
839 status = get_double_from_node(doc, child,
840 &cur_ds_def->par[DS_max_val].u_val);
841 else if (xmlStrcmp(child->name, (const xmlChar *) "cdef") == 0)
842 status = parse_tag_ds_cdef(doc, child, rrd);
843 else if (xmlStrcmp(child->name, (const xmlChar *) "last_ds") == 0)
844 status = get_string_from_node(doc, child,
845 cur_pdp_prep->last_ds,
846 sizeof(cur_pdp_prep->last_ds));
847 else if (xmlStrcmp(child->name, (const xmlChar *) "value") == 0)
848 status = get_double_from_node(doc, child,
849 &cur_pdp_prep->scratch[PDP_val].
850 u_val);
851 else if (xmlStrcmp(child->name, (const xmlChar *) "unknown_sec") == 0)
852 status = get_int_from_node(doc, child,
853 (int *) &cur_pdp_prep->
854 scratch[PDP_unkn_sec_cnt].u_cnt);
855 else {
856 rrd_set_error("parse_tag_ds: Unknown tag: %s", child->name);
857 status = -1;
858 }
860 if (status != 0)
861 break;
862 }
864 return (status);
865 } /* int parse_tag_ds */
867 /*
868 * Parse root nodes
869 */
870 static int parse_tag_rrd(
871 xmlDoc * doc,
872 xmlNode * node,
873 rrd_t *rrd)
874 {
875 xmlNode *child;
876 int status;
878 status = 0;
879 for (child = node->xmlChildrenNode; child != NULL; child = child->next) {
880 if ((xmlStrcmp(child->name, (const xmlChar *) "comment") == 0)
881 || (xmlStrcmp(child->name, (const xmlChar *) "text") == 0))
882 /* ignore */ ;
883 else if (xmlStrcmp(child->name, (const xmlChar *) "version") == 0)
884 status = get_string_from_node(doc, child,
885 rrd->stat_head->version,
886 sizeof(rrd->stat_head->version));
887 else if (xmlStrcmp(child->name, (const xmlChar *) "step") == 0)
888 status = get_int_from_node(doc, child,
889 (int *) &rrd->stat_head->pdp_step);
890 else if (xmlStrcmp(child->name, (const xmlChar *) "lastupdate") == 0)
891 status = get_int_from_node(doc, child,
892 (int *) &rrd->live_head->last_up);
893 else if (xmlStrcmp(child->name, (const xmlChar *) "ds") == 0)
894 status = parse_tag_ds(doc, child, rrd);
895 else if (xmlStrcmp(child->name, (const xmlChar *) "rra") == 0)
896 status = parse_tag_rra(doc, child, rrd);
897 else {
898 rrd_set_error("parse_tag_rrd: Unknown tag: %s", child->name);
899 status = -1;
900 }
902 if (status != 0)
903 break;
904 }
906 return (status);
907 } /* int parse_tag_rrd */
909 static rrd_t *parse_file(
910 const char *filename)
911 {
912 xmlDoc *doc;
913 xmlNode *cur;
914 int status;
916 rrd_t *rrd;
918 doc = xmlParseFile(filename);
919 if (doc == NULL) {
920 rrd_set_error("Document not parsed successfully.");
921 return (NULL);
922 }
924 cur = xmlDocGetRootElement(doc);
925 if (cur == NULL) {
926 rrd_set_error("Document is empty.");
927 xmlFreeDoc(doc);
928 return (NULL);
929 }
931 if (xmlStrcmp(cur->name, (const xmlChar *) "rrd") != 0) {
932 rrd_set_error
933 ("Document of the wrong type, root node is not \"rrd\".");
934 xmlFreeDoc(doc);
935 return (NULL);
936 }
938 rrd = (rrd_t *) malloc(sizeof(rrd_t));
939 if (rrd == NULL) {
940 rrd_set_error("parse_file: malloc failed.");
941 xmlFreeDoc(doc);
942 return (NULL);
943 }
944 memset(rrd, '\0', sizeof(rrd_t));
946 rrd->stat_head = (stat_head_t *) malloc(sizeof(stat_head_t));
947 if (rrd->stat_head == NULL) {
948 rrd_set_error("parse_tag_rrd: malloc failed.");
949 xmlFreeDoc(doc);
950 free(rrd);
951 return (NULL);
952 }
953 memset(rrd->stat_head, '\0', sizeof(stat_head_t));
955 strncpy(rrd->stat_head->cookie, "RRD", sizeof(rrd->stat_head->cookie));
956 rrd->stat_head->float_cookie = FLOAT_COOKIE;
958 rrd->live_head = (live_head_t *) malloc(sizeof(live_head_t));
959 if (rrd->live_head == NULL) {
960 rrd_set_error("parse_tag_rrd: malloc failed.");
961 xmlFreeDoc(doc);
962 free(rrd->stat_head);
963 free(rrd);
964 return (NULL);
965 }
966 memset(rrd->live_head, '\0', sizeof(live_head_t));
968 status = parse_tag_rrd(doc, cur, rrd);
970 xmlFreeDoc(doc);
971 if (status != 0) {
972 rrd_free(rrd);
973 rrd = NULL;
974 }
976 return (rrd);
977 } /* rrd_t *parse_file */
979 static int write_file(
980 const char *file_name,
981 rrd_t *rrd)
982 {
983 FILE *fh;
984 unsigned int i;
985 unsigned int rra_offset;
987 if (strcmp("-", file_name) == 0)
988 fh = stdout;
989 else {
990 int fd_flags = O_WRONLY | O_CREAT;
991 int fd;
993 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
994 fd_flags |= O_BINARY;
995 #endif
997 if (opt_force_overwrite == 0)
998 fd_flags |= O_EXCL;
1000 fd = open(file_name, fd_flags, 0666);
1001 if (fd == -1) {
1002 rrd_set_error("creating '%s': %s", file_name,
1003 rrd_strerror(errno));
1004 return (-1);
1005 }
1007 fh = fdopen(fd, "wb");
1008 if (fh == NULL) {
1009 rrd_set_error("fdopen failed: %s", rrd_strerror(errno));
1010 close(fd);
1011 return (-1);
1012 }
1013 }
1014 if (atoi(rrd->stat_head->version) < 3) {
1015 /* we output 3 or higher */
1016 strcpy(rrd->stat_head->version, "0003");
1017 }
1018 fwrite(rrd->stat_head, sizeof(stat_head_t), 1, fh);
1019 fwrite(rrd->ds_def, sizeof(ds_def_t), rrd->stat_head->ds_cnt, fh);
1020 fwrite(rrd->rra_def, sizeof(rra_def_t), rrd->stat_head->rra_cnt, fh);
1021 fwrite(rrd->live_head, sizeof(live_head_t), 1, fh);
1022 fwrite(rrd->pdp_prep, sizeof(pdp_prep_t), rrd->stat_head->ds_cnt, fh);
1023 fwrite(rrd->cdp_prep, sizeof(cdp_prep_t),
1024 rrd->stat_head->rra_cnt * rrd->stat_head->ds_cnt, fh);
1025 fwrite(rrd->rra_ptr, sizeof(rra_ptr_t), rrd->stat_head->rra_cnt, fh);
1027 /* calculate the number of rrd_values to dump */
1028 rra_offset = 0;
1029 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
1030 unsigned long num_rows = rrd->rra_def[i].row_cnt;
1031 unsigned long cur_row = rrd->rra_ptr[i].cur_row;
1032 unsigned long ds_cnt = rrd->stat_head->ds_cnt;
1034 fwrite(rrd->rrd_value +
1035 (rra_offset + num_rows - 1 - cur_row) * ds_cnt,
1036 sizeof(rrd_value_t), (cur_row + 1) * ds_cnt, fh);
1038 fwrite(rrd->rrd_value + rra_offset * ds_cnt,
1039 sizeof(rrd_value_t), (num_rows - 1 - cur_row) * ds_cnt, fh);
1041 rra_offset += num_rows;
1042 }
1044 /* lets see if we had an error */
1045 if (ferror(fh)) {
1046 rrd_set_error("a file error occurred while creating '%s'", file_name);
1047 fclose(fh);
1048 return (-1);
1049 }
1051 fclose(fh);
1052 return (0);
1053 } /* int write_file */
1055 int rrd_restore(
1056 int argc,
1057 char **argv)
1058 {
1059 rrd_t *rrd;
1061 #ifdef WIN32
1062 srand((unsigned int) time(NULL));
1063 #else
1064 srandom((unsigned int) time(NULL) + (unsigned int) getpid());
1065 #endif
1066 /* init rrd clean */
1067 optind = 0;
1068 opterr = 0; /* initialize getopt */
1069 while (42) {
1070 int opt;
1071 int option_index = 0;
1072 static struct option long_options[] = {
1073 {"range-check", no_argument, 0, 'r'},
1074 {"force-overwrite", no_argument, 0, 'f'},
1075 {0, 0, 0, 0}
1076 };
1078 opt = getopt_long(argc, argv, "rf", long_options, &option_index);
1080 if (opt == EOF)
1081 break;
1083 switch (opt) {
1084 case 'r':
1085 opt_range_check = 1;
1086 break;
1088 case 'f':
1089 opt_force_overwrite = 1;
1090 break;
1092 default:
1093 rrd_set_error("usage rrdtool %s [--range-check|-r] "
1094 "[--force-overwrite/-f] file.xml file.rrd",
1095 argv[0]);
1096 return (-1);
1097 break;
1098 }
1099 } /* while (42) */
1101 if ((argc - optind) != 2) {
1102 rrd_set_error("usage rrdtool %s [--range-check/-r] "
1103 "[--force-overwrite/-f] file.xml file.rrd", argv[0]);
1104 return (-1);
1105 }
1107 rrd = parse_file(argv[optind]);
1108 if (rrd == NULL)
1109 return (-1);
1111 if (write_file(argv[optind + 1], rrd) != 0) {
1112 rrd_free(rrd);
1113 return (-1);
1114 }
1116 rrd_free(rrd);
1117 return (0);
1118 } /* int rrd_restore */
1120 /* vim: set sw=2 sts=2 ts=8 et fdm=marker : */