1 /****************************************************************************
2 * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
3 ****************************************************************************
4 * rrd_graph_helper.c commandline parser functions
5 * this code initially written by Alex van den Bogaerdt
6 ****************************************************************************/
8 #include "rrd_graph.h"
10 #define dprintf if (gdp->debug) printf
12 /* NOTE ON PARSING:
13 *
14 * we use the following:
15 *
16 * i=0; sscanf(&line[*eaten], "what to find%n", variables, &i)
17 *
18 * Usually you want to find a separator as well. Example:
19 * i=0; sscanf(&line[*eaten], "%li:%n", &someint, &i)
20 *
21 * When the separator is not found, i is not set and thus remains zero.
22 * Another way would be to compare strlen() to i
23 *
24 * Why is this important? Because 12345abc should not be matched as
25 * integer 12345 ...
26 */
28 /* NOTE ON VNAMES:
29 *
30 * "if ((gdp->vidx=find_var(im, l))!=-1)" is not good enough, at least
31 * not by itself.
32 *
33 * A vname as a result of a VDEF is quite different from a vname
34 * resulting of a DEF or CDEF.
35 */
37 /* NOTE ON VNAMES:
38 *
39 * A vname called "123" is not to be parsed as the number 123
40 */
43 /* Define prototypes for the parsing methods.
44 Inputs:
45 const char *const line - a fixed pointer to a fixed string
46 unsigned int *const eaten - a fixed pointer to a changing index in that line
47 graph_desc_t *const gdp - a fixed pointer to a changing graph description
48 image_desc_t *const im - a fixed pointer to a changing image description
49 */
51 int rrd_parse_find_gf(
52 const char *const,
53 unsigned int *const,
54 graph_desc_t *const);
56 int rrd_parse_legend(
57 const char *const,
58 unsigned int *const,
59 graph_desc_t *const);
61 int rrd_parse_color(
62 const char *const,
63 graph_desc_t *const);
65 int rrd_parse_textalign(
66 const char *const,
67 unsigned int *const,
68 graph_desc_t *const);
71 int rrd_parse_CF(
72 const char *const,
73 unsigned int *const,
74 graph_desc_t *const,
75 enum cf_en *const);
77 int rrd_parse_print(
78 const char *const,
79 unsigned int *const,
80 graph_desc_t *const,
81 image_desc_t *const);
83 int rrd_parse_shift(
84 const char *const,
85 unsigned int *const,
86 graph_desc_t *const,
87 image_desc_t *const);
89 int rrd_parse_xport(
90 const char *const,
91 unsigned int *const,
92 graph_desc_t *const,
93 image_desc_t *const);
95 int rrd_parse_PVHLAST(
96 const char *const,
97 unsigned int *const,
98 graph_desc_t *const,
99 image_desc_t *const);
101 int rrd_parse_make_vname(
102 const char *const,
103 unsigned int *const,
104 graph_desc_t *const,
105 image_desc_t *const);
107 int rrd_parse_find_vname(
108 const char *const,
109 unsigned int *const,
110 graph_desc_t *const,
111 image_desc_t *const);
113 int rrd_parse_def(
114 const char *const,
115 unsigned int *const,
116 graph_desc_t *const,
117 image_desc_t *const);
119 int rrd_parse_vdef(
120 const char *const,
121 unsigned int *const,
122 graph_desc_t *const,
123 image_desc_t *const);
125 int rrd_parse_cdef(
126 const char *const,
127 unsigned int *const,
128 graph_desc_t *const,
129 image_desc_t *const);
131 int rrd_parse_find_gf(
132 const char *const line,
133 unsigned int *const eaten,
134 graph_desc_t *const gdp)
135 {
136 char funcname[11], c1 = 0;
137 int i = 0;
139 /* start an argument with DEBUG to be able to see how it is parsed */
140 sscanf(&line[*eaten], "DEBUG%n", &i);
141 if (i) {
142 gdp->debug = 1;
143 (*eaten) += i;
144 i = 0;
145 dprintf("Scanning line '%s'\n", &line[*eaten]);
146 }
147 i = 0;
148 c1 = '\0';
149 sscanf(&line[*eaten], "%10[A-Z]%n%c", funcname, &i, &c1);
150 if (!i) {
151 rrd_set_error("Could not make sense out of '%s'", line);
152 return 1;
153 }
154 (*eaten) += i;
155 if ((int) (gdp->gf = gf_conv(funcname)) == -1) {
156 rrd_set_error("'%s' is not a valid function name", funcname);
157 return 1;
158 } else {
159 dprintf("- found function name '%s'\n", funcname);
160 }
162 if (c1 == '\0') {
163 rrd_set_error("Function %s needs parameters. Line: %s\n", funcname,
164 line);
165 return 1;
166 }
167 if (c1 == ':')
168 (*eaten)++;
170 /* Some commands have a parameter before the colon
171 * (currently only LINE)
172 */
173 switch (gdp->gf) {
174 case GF_LINE:
175 if (c1 == ':') {
176 gdp->linewidth = 1;
177 dprintf("- - using default width of 1\n");
178 } else {
179 i = 0;
180 sscanf(&line[*eaten], "%lf:%n", &gdp->linewidth, &i);
181 if (!i) {
182 rrd_set_error("Cannot parse line width '%s' in line '%s'\n",
183 &line[*eaten], line);
184 return 1;
185 } else {
186 dprintf("- - scanned width %f\n", gdp->linewidth);
187 if (isnan(gdp->linewidth)) {
188 rrd_set_error
189 ("LINE width '%s' is not a number in line '%s'\n",
190 &line[*eaten], line);
191 return 1;
192 }
193 if (isinf(gdp->linewidth)) {
194 rrd_set_error
195 ("LINE width '%s' is out of range in line '%s'\n",
196 &line[*eaten], line);
197 return 1;
198 }
199 if (gdp->linewidth < 0) {
200 rrd_set_error
201 ("LINE width '%s' is less than 0 in line '%s'\n",
202 &line[*eaten], line);
203 return 1;
204 }
205 }
206 (*eaten) += i;
207 }
208 break;
209 default:
210 if (c1 == ':')
211 break;
212 rrd_set_error("Malformed '%s' command in line '%s'\n", &line[*eaten],
213 line);
214 return 1;
215 }
216 if (line[*eaten] == '\0') {
217 rrd_set_error("Expected some arguments after '%s'\n", line);
218 return 1;
219 }
220 return 0;
221 }
223 int rrd_parse_legend(
224 const char *const line,
225 unsigned int *const eaten,
226 graph_desc_t *const gdp)
227 {
228 int i;
230 if (line[*eaten] == '\0' || line[*eaten] == ':') {
231 dprintf("- no (or: empty) legend found\n");
232 return 0;
233 }
235 i = scan_for_col(&line[*eaten], FMT_LEG_LEN, gdp->legend);
237 (*eaten) += i;
239 if (line[*eaten] != '\0' && line[*eaten] != ':') {
240 rrd_set_error("Legend too long");
241 return 1;
242 } else {
243 return 0;
244 }
245 }
247 int rrd_parse_color(
248 const char *const string,
249 graph_desc_t *const gdp)
250 {
251 unsigned int r = 0, g = 0, b = 0, a = 0, i;
253 /* matches the following formats:
254 ** RGB
255 ** RGBA
256 ** RRGGBB
257 ** RRGGBBAA
258 */
260 i = 0;
261 while (string[i] && isxdigit((unsigned int) string[i]))
262 i++;
263 if (string[i] != '\0')
264 return 1; /* garbage follows hexdigits */
265 switch (i) {
266 case 3:
267 case 4:
268 sscanf(string, "%1x%1x%1x%1x", &r, &g, &b, &a);
269 r *= 0x11;
270 g *= 0x11;
271 b *= 0x11;
272 a *= 0x11;
273 if (i == 3)
274 a = 0xFF;
275 break;
276 case 6:
277 case 8:
278 sscanf(string, "%02x%02x%02x%02x", &r, &g, &b, &a);
279 if (i == 6)
280 a = 0xFF;
281 break;
282 default:
283 return 1; /* wrong number of digits */
284 }
285 gdp->col = gfx_hex_to_col(r << 24 | g << 16 | b << 8 | a);
286 return 0;
287 }
289 int rrd_parse_CF(
290 const char *const line,
291 unsigned int *const eaten,
292 graph_desc_t *const gdp,
293 enum cf_en *cf)
294 {
295 char symname[CF_NAM_SIZE];
296 int i = 0;
298 sscanf(&line[*eaten], CF_NAM_FMT "%n", symname, &i);
299 if ((!i) || ((line[(*eaten) + i] != '\0') && (line[(*eaten) + i] != ':'))) {
300 rrd_set_error("Cannot parse CF in '%s'", line);
301 return 1;
302 }
303 (*eaten) += i;
304 dprintf("- using CF '%s'\n", symname);
306 if ((int) (*cf = cf_conv(symname)) == -1) {
307 rrd_set_error("Unknown CF '%s' in '%s'", symname, line);
308 return 1;
309 }
311 if (line[*eaten] != '\0')
312 (*eaten)++;
313 return 0;
314 }
316 /* Try to match next token as a vname.
317 *
318 * Returns:
319 * -1 an error occured and the error string is set
320 * other the vname index number
321 *
322 * *eaten is incremented only when a vname is found.
323 */
324 int rrd_parse_find_vname(
325 const char *const line,
326 unsigned int *const eaten,
327 graph_desc_t *const gdp,
328 image_desc_t *const im)
329 {
330 char tmpstr[MAX_VNAME_LEN + 1];
331 int i;
332 long vidx;
334 i = 0;
335 sscanf(&line[*eaten], DEF_NAM_FMT "%n", tmpstr, &i);
336 if (!i) {
337 rrd_set_error("Could not parse line '%s'", line);
338 return -1;
339 }
340 if (line[*eaten + i] != ':' && line[*eaten + i] != '\0') {
341 rrd_set_error("Could not parse line '%s'", line);
342 return -1;
343 }
344 dprintf("- Considering '%s'\n", tmpstr);
346 if ((vidx = find_var(im, tmpstr)) < 0) {
347 dprintf("- Not a vname\n");
348 rrd_set_error("Not a valid vname: %s in line %s", tmpstr, line);
349 return -1;
350 }
351 dprintf("- Found vname '%s' vidx '%li'\n", tmpstr, gdp->vidx);
352 if (line[*eaten + i] == ':')
353 i++;
354 (*eaten) += i;
355 return vidx;
356 }
358 /* Parsing old-style xPRINT and new-style xPRINT */
359 int rrd_parse_print(
360 const char *const line,
361 unsigned int *const eaten,
362 graph_desc_t *const gdp,
363 image_desc_t *const im)
364 {
365 /* vname:CF:format in case of DEF-based vname
366 ** vname:CF:format in case of CDEF-based vname
367 ** vname:format[:strftime] in case of VDEF-based vname
368 */
369 if ((gdp->vidx = rrd_parse_find_vname(line, eaten, gdp, im)) < 0)
370 return 1;
372 switch (im->gdes[gdp->vidx].gf) {
373 case GF_DEF:
374 case GF_CDEF:
375 dprintf("- vname is of type DEF or CDEF, looking for CF\n");
376 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf))
377 return 1;
378 break;
379 case GF_VDEF:
380 dprintf("- vname is of type VDEF\n");
381 break;
382 default:
383 rrd_set_error("Encountered unknown type variable '%s'",
384 im->gdes[gdp->vidx].vname);
385 return 1;
386 }
388 if (rrd_parse_legend(line, eaten, gdp))
389 return 1;
390 /* for *PRINT the legend itself gets rendered later. We only
391 get the format at this juncture */
392 strcpy(gdp->format, gdp->legend);
393 gdp->legend[0] = '\0';
394 /* this is a very crud test, parsing :style flags should be in a function */
395 if (im->gdes[gdp->vidx].gf == GF_VDEF
396 && strcmp(line + (*eaten), ":strftime") == 0) {
397 gdp->strftm = 1;
398 (*eaten) += strlen(":strftime");
399 }
400 return 0;
401 }
403 /* SHIFT:_def_or_cdef:_vdef_or_number_
404 */
405 int rrd_parse_shift(
406 const char *const line,
407 unsigned int *const eaten,
408 graph_desc_t *const gdp,
409 image_desc_t *const im)
410 {
411 int i;
413 if ((gdp->vidx = rrd_parse_find_vname(line, eaten, gdp, im)) < 0)
414 return 1;
416 switch (im->gdes[gdp->vidx].gf) {
417 case GF_DEF:
418 case GF_CDEF:
419 dprintf("- vname is of type DEF or CDEF, OK\n");
420 break;
421 case GF_VDEF:
422 rrd_set_error("Cannot shift a VDEF: '%s' in line '%s'\n",
423 im->gdes[gdp->vidx].vname, line);
424 return 1;
425 default:
426 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",
427 im->gdes[gdp->vidx].vname, line);
428 return 1;
429 }
431 if ((gdp->shidx = rrd_parse_find_vname(line, eaten, gdp, im)) >= 0) {
432 switch (im->gdes[gdp->shidx].gf) {
433 case GF_DEF:
434 case GF_CDEF:
435 rrd_set_error("Offset cannot be a (C)DEF: '%s' in line '%s'\n",
436 im->gdes[gdp->shidx].vname, line);
437 return 1;
438 case GF_VDEF:
439 dprintf("- vname is of type VDEF, OK\n");
440 break;
441 default:
442 rrd_set_error
443 ("Encountered unknown type variable '%s' in line '%s'",
444 im->gdes[gdp->vidx].vname, line);
445 return 1;
446 }
447 } else {
448 rrd_clear_error();
449 i = 0;
450 sscanf(&line[*eaten], "%li%n", &gdp->shval, &i);
451 if (i != (int) strlen(&line[*eaten])) {
452 rrd_set_error("Not a valid offset: %s in line %s", &line[*eaten],
453 line);
454 return 1;
455 }
456 (*eaten) += i;
457 dprintf("- offset is number %li\n", gdp->shval);
458 gdp->shidx = -1;
459 }
460 return 0;
461 }
463 /* XPORT:_def_or_cdef[:legend]
464 */
465 int rrd_parse_xport(
466 const char *const line,
467 unsigned int *const eaten,
468 graph_desc_t *const gdp,
469 image_desc_t *const im)
470 {
471 if ((gdp->vidx = rrd_parse_find_vname(line, eaten, gdp, im)) < 0)
472 return 1;
474 switch (im->gdes[gdp->vidx].gf) {
475 case GF_DEF:
476 case GF_CDEF:
477 dprintf("- vname is of type DEF or CDEF, OK\n");
478 break;
479 case GF_VDEF:
480 rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",
481 im->gdes[gdp->vidx].vname, line);
482 return 1;
483 default:
484 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",
485 im->gdes[gdp->vidx].vname, line);
486 return 1;
487 }
488 dprintf("- looking for legend in '%s'\n", &line[*eaten]);
489 if (rrd_parse_legend(line, eaten, gdp))
490 return 1;
491 return 0;
492 }
494 int rrd_parse_textalign(
495 const char *const line,
496 unsigned int *const eaten,
497 graph_desc_t *const gdp)
498 {
499 if (strcmp(&line[*eaten], "left") == 0) {
500 gdp->txtalign = TXA_LEFT;
501 } else if (strcmp(&line[*eaten], "right") == 0) {
502 gdp->txtalign = TXA_RIGHT;
503 } else if (strcmp(&line[*eaten], "justified") == 0) {
504 gdp->txtalign = TXA_JUSTIFIED;
505 } else if (strcmp(&line[*eaten], "center") == 0) {
506 gdp->txtalign = TXA_CENTER;
507 } else {
508 rrd_set_error("Unknown alignement type '%s'", &line[*eaten]);
509 return 1;
510 }
511 *eaten += strlen(&line[*eaten]);
512 return 0;
513 }
516 /* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
517 ** is done in one function.
518 **
519 ** Stacking PART, VRULE, HRULE or TICK is not allowed.
520 **
521 ** If a number (which is valid to enter) is more than a
522 ** certain amount of characters, it is caught as an error.
523 ** While this is arguable, so is entering fixed numbers
524 ** with more than MAX_VNAME_LEN significant digits.
525 */
526 int rrd_parse_PVHLAST(
527 const char *const line,
528 unsigned int *const eaten,
529 graph_desc_t *const gdp,
530 image_desc_t *const im)
531 {
532 int i, j, k;
533 int colorfound = 0;
534 char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
535 static int spacecnt = 0;
537 if (spacecnt == 0) {
538 float one_space = gfx_get_text_width(im, 0,
539 im->
540 text_prop[TEXT_PROP_LEGEND].
541 font,
542 im->
543 text_prop[TEXT_PROP_LEGEND].
544 size,
545 im->tabwidth, " ") / 4.0;
546 float target_space = gfx_get_text_width(im, 0,
547 im->
548 text_prop
549 [TEXT_PROP_LEGEND].font,
550 im->
551 text_prop
552 [TEXT_PROP_LEGEND].size,
553 im->tabwidth, "oo");
555 spacecnt = target_space / one_space;
556 dprintf("- spacecnt: %i onespace: %f targspace: %f\n", spacecnt,
557 one_space, target_space);
558 }
561 dprintf("- parsing '%s'\n", &line[*eaten]);
563 /* have simpler code in the drawing section */
564 if (gdp->gf == GF_STACK) {
565 gdp->stack = 1;
566 }
568 i = scan_for_col(&line[*eaten], MAX_VNAME_LEN + 9, tmpstr);
569 if (line[*eaten + i] != '\0' && line[*eaten + i] != ':') {
570 rrd_set_error("Cannot parse line '%s'", line);
571 return 1;
572 }
574 j = i;
575 while (j > 0 && tmpstr[j] != '#')
576 j--;
578 if (j) {
579 tmpstr[j] = '\0';
580 }
581 /* We now have:
582 * tmpstr[0] containing vname
583 * tmpstr[j] if j!=0 then containing color
584 * i size of vname + color
585 * j if j!=0 then size of vname
586 */
588 /* Number or vname ?
589 * If it is an existing vname, that's OK, provided that it is a
590 * valid type (need time for VRULE, not a float)
591 * Else see if it parses as a number.
592 */
593 dprintf("- examining string '%s'\n", tmpstr);
594 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
595 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
596 switch (gdp->gf) {
597 #ifdef WITH_PIECHART
598 case GF_PART:
599 #endif
600 case GF_VRULE:
601 case GF_HRULE:
602 if (im->gdes[gdp->vidx].gf != GF_VDEF) {
603 rrd_set_error("Using vname %s of wrong type in line %s\n",
604 im->gdes[gdp->gf].vname, line);
605 return 1;
606 }
607 break;
608 default:;
609 }
610 } else {
611 dprintf("- it is not an existing vname\n");
612 switch (gdp->gf) {
613 case GF_VRULE:
614 k = 0;
615 sscanf(tmpstr, "%li%n", &gdp->xrule, &k);
616 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
617 dprintf("- found time: %li\n", gdp->xrule);
618 } else {
619 dprintf("- is is not a valid number: %li\n", gdp->xrule);
620 rrd_set_error
621 ("parameter '%s' does not represent time in line %s\n",
622 tmpstr, line);
623 return 1;
624 }
625 default:
626 k = 0;
627 sscanf(tmpstr, "%lf%n", &gdp->yrule, &k);
628 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
629 dprintf("- found number: %f\n", gdp->yrule);
630 } else {
631 dprintf("- is is not a valid number: %li\n", gdp->xrule);
632 rrd_set_error
633 ("parameter '%s' does not represent a number in line %s\n",
634 tmpstr, line);
635 return 1;
636 }
637 }
638 }
640 if (j) {
641 j++;
642 dprintf("- examining color '%s'\n", &tmpstr[j]);
643 if (rrd_parse_color(&tmpstr[j], gdp)) {
644 rrd_set_error("Could not parse color in '%s'", &tmpstr[j]);
645 return 1;
646 }
647 dprintf("- parsed color %0.0f,%0.0f,%0.0f,%0.0f\n", gdp->col.red,
648 gdp->col.green, gdp->col.blue, gdp->col.alpha);
649 colorfound = 1;
650 } else {
651 dprintf("- no color present in '%s'\n", tmpstr);
652 }
654 (*eaten) += i; /* after vname#color */
655 if (line[*eaten] != '\0') {
656 (*eaten)++; /* after colon */
657 }
659 if (gdp->gf == GF_TICK) {
660 dprintf("- parsing '%s'\n", &line[*eaten]);
661 dprintf("- looking for optional TICK number\n");
662 j = 0;
663 sscanf(&line[*eaten], "%lf%n", &gdp->yrule, &j);
664 if (j) {
665 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
666 rrd_set_error("Cannot parse TICK fraction '%s'", line);
667 return 1;
668 }
669 dprintf("- found number %f\n", gdp->yrule);
670 if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
671 rrd_set_error("Tick factor should be <= 1.0");
672 return 1;
673 }
674 (*eaten) += j;
675 } else {
676 dprintf("- not found, defaulting to 0.1\n");
677 gdp->yrule = 0.1;
678 }
679 if (line[*eaten] == '\0') {
680 dprintf("- done parsing line\n");
681 return 0;
682 } else {
683 if (line[*eaten] == ':') {
684 (*eaten)++;
685 } else {
686 rrd_set_error("Can't make sense of that TICK line");
687 return 1;
688 }
689 }
690 }
692 dprintf("- parsing '%s'\n", &line[*eaten]);
694 /* Legend is next. A legend without a color is an error.
695 ** Stacking an item without having a legend is OK however
696 ** then an empty legend should be specified.
697 ** LINE:val#color:STACK means legend is string "STACK"
698 ** LINE:val#color::STACK means no legend, and do STACK
699 ** LINE:val:STACK is an error (legend but no color)
700 ** LINE:val::STACK means no legend, and do STACK
701 */
702 if (colorfound) {
703 int err = 0;
704 char *linecp = strdup(line);
706 dprintf("- looking for optional legend\n");
708 dprintf("- examining '%s'\n", &line[*eaten]);
709 if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
710 int spi;
712 /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
713 * replaced by the color box later on. */
714 for (spi = 0; spi < spacecnt && (*eaten) > 1; spi++) {
715 linecp[--(*eaten)] = ' ';
716 }
717 }
719 if (rrd_parse_legend(linecp, eaten, gdp))
720 err = 1;
721 free(linecp);
722 if (err)
723 return 1;
725 dprintf("- found legend '%s'\n", &gdp->legend[2]);
726 } else {
727 dprintf("- skipping empty legend\n");
728 if (line[*eaten] != '\0' && line[*eaten] != ':') {
729 rrd_set_error("Legend set but no color: %s", &line[*eaten]);
730 return 1;
731 }
732 }
733 if (line[*eaten] == '\0') {
734 dprintf("- done parsing line\n");
735 return 0;
736 }
737 (*eaten)++; /* after colon */
739 /* PART, HRULE, VRULE and TICK cannot be stacked. */
740 if ((gdp->gf == GF_HRULE)
741 || (gdp->gf == GF_VRULE)
742 || (gdp->gf == GF_TICK)
743 )
744 return 0;
746 dprintf("- parsing '%s'\n", &line[*eaten]);
747 if (line[*eaten] != '\0') {
748 dprintf("- still more, should be STACK\n");
749 j = scan_for_col(&line[*eaten], 5, tmpstr);
750 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
751 /* not 5 chars */
752 rrd_set_error("STACK expected and not found");
753 return 1;
754 }
755 if (!strcmp("STACK", tmpstr)) {
756 dprintf("- found STACK\n");
757 gdp->stack = 1;
758 (*eaten) += j;
759 } else {
760 rrd_set_error("STACK expected and not found");
761 return 1;
762 }
763 }
764 if (line[*eaten] == '\0') {
765 dprintf("- done parsing line\n");
766 return 0;
767 }
768 (*eaten)++;
769 dprintf("- parsing '%s'\n", &line[*eaten]);
771 return 0;
772 }
774 int rrd_parse_make_vname(
775 const char *const line,
776 unsigned int *const eaten,
777 graph_desc_t *const gdp,
778 image_desc_t *const im)
779 {
780 char tmpstr[MAX_VNAME_LEN + 10];
781 int i = 0;
783 sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr, &i);
784 if (!i) {
785 rrd_set_error("Cannot parse vname from '%s'", line);
786 return 1;
787 }
788 dprintf("- found candidate '%s'\n", tmpstr);
790 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
791 rrd_set_error("Attempting to reuse '%s'", im->gdes[gdp->vidx].vname);
792 return 1;
793 }
794 strcpy(gdp->vname, tmpstr);
795 dprintf("- created vname '%s' vidx %lu\n", gdp->vname, im->gdes_c - 1);
796 (*eaten) += i;
797 return 0;
798 }
800 int rrd_parse_def(
801 const char *const line,
802 unsigned int *const eaten,
803 graph_desc_t *const gdp,
804 image_desc_t *const im)
805 {
806 int i = 0;
807 char command[7]; /* step, start, end, reduce */
808 char tmpstr[256];
809 struct rrd_time_value start_tv, end_tv;
810 time_t start_tmp = 0, end_tmp = 0;
811 char *parsetime_error = NULL;
813 start_tv.type = end_tv.type = ABSOLUTE_TIME;
814 start_tv.offset = end_tv.offset = 0;
815 localtime_r(&gdp->start, &start_tv.tm);
816 localtime_r(&gdp->end, &end_tv.tm);
818 dprintf("- parsing '%s'\n", &line[*eaten]);
819 dprintf("- from line '%s'\n", line);
821 if (rrd_parse_make_vname(line, eaten, gdp, im))
822 return 1;
823 i = scan_for_col(&line[*eaten], sizeof(gdp->rrd) - 1, gdp->rrd);
824 if (line[*eaten + i] != ':') {
825 rrd_set_error("Problems reading database name");
826 return 1;
827 }
828 (*eaten) += ++i;
829 dprintf("- using file '%s'\n", gdp->rrd);
831 i = 0;
832 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam, &i);
833 if (!i) {
834 rrd_set_error("Cannot parse DS in '%s'", line);
835 return 1;
836 }
837 (*eaten) += i;
838 dprintf("- using DS '%s'\n", gdp->ds_nam);
840 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf))
841 return 1;
842 gdp->cf_reduce = gdp->cf;
844 if (line[*eaten] == '\0')
845 return 0;
847 while (1) {
848 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
849 i = 0;
850 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
851 if (!i) {
852 rrd_set_error("Parse error in '%s'", line);
853 return 1;
854 }
855 (*eaten) += i;
856 dprintf("- processing '%s'\n", command);
857 if (!strcmp("reduce", command)) {
858 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf_reduce))
859 return 1;
860 if (line[*eaten] != '\0')
861 (*eaten)--;
862 } else if (!strcmp("step", command)) {
863 i = 0;
864 sscanf(&line[*eaten], "%lu%n", &gdp->step, &i);
865 gdp->step_orig = gdp->step;
866 (*eaten) += i;
867 dprintf("- using step %lu\n", gdp->step);
868 } else if (!strcmp("start", command)) {
869 i = scan_for_col(&line[*eaten], 255, tmpstr);
870 (*eaten) += i;
871 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
872 rrd_set_error("start time: %s", parsetime_error);
873 return 1;
874 }
875 dprintf("- done parsing: '%s'\n", &line[*eaten]);
876 } else if (!strcmp("end", command)) {
877 i = scan_for_col(&line[*eaten], 255, tmpstr);
878 (*eaten) += i;
879 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
880 rrd_set_error("end time: %s", parsetime_error);
881 return 1;
882 }
883 dprintf("- done parsing: '%s'\n", &line[*eaten]);
884 } else {
885 rrd_set_error("Parse error in '%s'", line);
886 return 1;
887 }
888 if (line[*eaten] == '\0')
889 break;
890 if (line[*eaten] != ':') {
891 dprintf("- Expected to see end of string but got '%s'\n",
892 &line[*eaten]);
893 rrd_set_error("Parse error in '%s'", line);
894 return 1;
895 }
896 (*eaten)++;
897 }
898 if (proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
899 /* error string is set in parsetime.c */
900 return 1;
901 }
902 if (start_tmp < 3600 * 24 * 365 * 10) {
903 rrd_set_error("the first entry to fetch should be "
904 "after 1980 (%ld)", start_tmp);
905 return 1;
906 }
908 if (end_tmp < start_tmp) {
909 rrd_set_error("start (%ld) should be less than end (%ld)",
910 start_tmp, end_tmp);
911 return 1;
912 }
914 gdp->start = start_tmp;
915 gdp->end = end_tmp;
916 gdp->start_orig = start_tmp;
917 gdp->end_orig = end_tmp;
919 dprintf("- start time %lu\n", gdp->start);
920 dprintf("- end time %lu\n", gdp->end);
922 return 0;
923 }
925 int rrd_parse_vdef(
926 const char *const line,
927 unsigned int *const eaten,
928 graph_desc_t *const gdp,
929 image_desc_t *const im)
930 {
931 char tmpstr[MAX_VNAME_LEN + 1]; /* vname\0 */
932 int i = 0;
934 dprintf("- parsing '%s'\n", &line[*eaten]);
935 if (rrd_parse_make_vname(line, eaten, gdp, im))
936 return 1;
938 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr, &i);
939 if (!i) {
940 rrd_set_error("Cannot parse line '%s'", line);
941 return 1;
942 }
943 if ((gdp->vidx = find_var(im, tmpstr)) < 0) {
944 rrd_set_error("Not a valid vname: %s in line %s", tmpstr, line);
945 return 1;
946 }
947 if (im->gdes[gdp->vidx].gf != GF_DEF && im->gdes[gdp->vidx].gf != GF_CDEF) {
948 rrd_set_error("variable '%s' not DEF nor "
949 "CDEF in VDEF '%s'", tmpstr, gdp->vname);
950 return 1;
951 }
952 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
953 (*eaten) += i;
955 dprintf("- calling vdef_parse with param '%s'\n", &line[*eaten]);
956 vdef_parse(gdp, &line[*eaten]);
957 while (line[*eaten] != '\0' && line[*eaten] != ':')
958 (*eaten)++;
960 return 0;
961 }
963 int rrd_parse_cdef(
964 const char *const line,
965 unsigned int *const eaten,
966 graph_desc_t *const gdp,
967 image_desc_t *const im)
968 {
969 dprintf("- parsing '%s'\n", &line[*eaten]);
970 if (rrd_parse_make_vname(line, eaten, gdp, im))
971 return 1;
972 if ((gdp->rpnp = rpn_parse((void *) im, &line[*eaten], &find_var_wrapper)
973 ) == NULL) {
974 rrd_set_error("invalid rpn expression in: %s", &line[*eaten]);
975 return 1;
976 };
977 while (line[*eaten] != '\0' && line[*eaten] != ':')
978 (*eaten)++;
979 return 0;
980 }
982 void rrd_graph_script(
983 int argc,
984 char *argv[],
985 image_desc_t *const im,
986 int optno)
987 {
988 int i;
990 /* save state for STACK backward compat function */
991 enum gf_en last_gf = GF_PRINT;
992 float last_linewidth = 0.0;
994 for (i = optind + optno; i < argc; i++) {
995 graph_desc_t *gdp;
996 unsigned int eaten = 0;
998 if (gdes_alloc(im))
999 return; /* the error string is already set */
1000 gdp = &im->gdes[im->gdes_c - 1];
1001 #ifdef DEBUG
1002 gdp->debug = 1;
1003 #endif
1005 if (rrd_parse_find_gf(argv[i], &eaten, gdp))
1006 return;
1008 switch (gdp->gf) {
1009 case GF_SHIFT: /* vname:value */
1010 if (rrd_parse_shift(argv[i], &eaten, gdp, im))
1011 return;
1012 break;
1013 case GF_TEXTALIGN: /* left|right|center|justified */
1014 if (rrd_parse_textalign(argv[i], &eaten, gdp))
1015 return;
1016 break;
1017 case GF_XPORT:
1018 if (rrd_parse_xport(argv[i], &eaten, gdp, im))
1019 return;
1020 break;
1021 case GF_PRINT: /* vname:CF:format -or- vname:format */
1022 im->prt_c++;
1023 case GF_GPRINT: /* vname:CF:format -or- vname:format */
1024 if (rrd_parse_print(argv[i], &eaten, gdp, im))
1025 return;
1026 break;
1027 case GF_COMMENT: /* text */
1028 if (rrd_parse_legend(argv[i], &eaten, gdp))
1029 return;
1030 break;
1031 case GF_VRULE: /* value#color[:legend] */
1032 case GF_HRULE: /* value#color[:legend] */
1033 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
1034 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
1035 case GF_TICK: /* vname#color[:num[:legend]] */
1036 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1037 return;
1038 last_gf = gdp->gf;
1039 last_linewidth = gdp->linewidth;
1040 break;
1041 case GF_STACK: /* vname-or-value[#color[:legend]] */
1042 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1043 return;
1044 if (last_gf == GF_LINE || last_gf == GF_AREA) {
1045 gdp->gf = last_gf;
1046 gdp->linewidth = last_linewidth;
1047 } else {
1048 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
1049 &argv[i][eaten], argv[i]);
1050 return;
1051 }
1052 break;
1053 /* data acquisition */
1054 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
1055 if (rrd_parse_def(argv[i], &eaten, gdp, im))
1056 return;
1057 break;
1058 case GF_CDEF: /* vname=rpn-expression */
1059 if (rrd_parse_cdef(argv[i], &eaten, gdp, im))
1060 return;
1061 break;
1062 case GF_VDEF: /* vname=rpn-expression */
1063 if (rrd_parse_vdef(argv[i], &eaten, gdp, im))
1064 return;
1065 break;
1066 }
1067 if (gdp->debug) {
1068 dprintf("used %i out of %zi chars\n", eaten, strlen(argv[i]));
1069 dprintf("parsed line: '%s'\n", argv[i]);
1070 dprintf("remaining: '%s'\n", &argv[i][eaten]);
1071 if (eaten >= strlen(argv[i]))
1072 dprintf("Command finished successfully\n");
1073 }
1074 if (eaten < strlen(argv[i])) {
1075 rrd_set_error("I don't understand '%s' in command: '%s'.",
1076 &argv[i][eaten], argv[i]);
1077 return;
1078 }
1079 }
1080 }