1 /****************************************************************************
2 * RRDtool 1.2.99907080300 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 long time_tmp = 0;
450 rrd_clear_error();
451 i = 0;
452 sscanf(&line[*eaten], "%li%n", &time_tmp, &i);
453 gdp->shval = time_tmp;
454 if (i != (int) strlen(&line[*eaten])) {
455 rrd_set_error("Not a valid offset: %s in line %s", &line[*eaten],
456 line);
457 return 1;
458 }
459 (*eaten) += i;
460 dprintf("- offset is number %li\n", gdp->shval);
461 gdp->shidx = -1;
462 }
463 return 0;
464 }
466 /* XPORT:_def_or_cdef[:legend]
467 */
468 int rrd_parse_xport(
469 const char *const line,
470 unsigned int *const eaten,
471 graph_desc_t *const gdp,
472 image_desc_t *const im)
473 {
474 if ((gdp->vidx = rrd_parse_find_vname(line, eaten, gdp, im)) < 0)
475 return 1;
477 switch (im->gdes[gdp->vidx].gf) {
478 case GF_DEF:
479 case GF_CDEF:
480 dprintf("- vname is of type DEF or CDEF, OK\n");
481 break;
482 case GF_VDEF:
483 rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",
484 im->gdes[gdp->vidx].vname, line);
485 return 1;
486 default:
487 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",
488 im->gdes[gdp->vidx].vname, line);
489 return 1;
490 }
491 dprintf("- looking for legend in '%s'\n", &line[*eaten]);
492 if (rrd_parse_legend(line, eaten, gdp))
493 return 1;
494 return 0;
495 }
497 int rrd_parse_textalign(
498 const char *const line,
499 unsigned int *const eaten,
500 graph_desc_t *const gdp)
501 {
502 if (strcmp(&line[*eaten], "left") == 0) {
503 gdp->txtalign = TXA_LEFT;
504 } else if (strcmp(&line[*eaten], "right") == 0) {
505 gdp->txtalign = TXA_RIGHT;
506 } else if (strcmp(&line[*eaten], "justified") == 0) {
507 gdp->txtalign = TXA_JUSTIFIED;
508 } else if (strcmp(&line[*eaten], "center") == 0) {
509 gdp->txtalign = TXA_CENTER;
510 } else {
511 rrd_set_error("Unknown alignement type '%s'", &line[*eaten]);
512 return 1;
513 }
514 *eaten += strlen(&line[*eaten]);
515 return 0;
516 }
519 /* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
520 ** is done in one function.
521 **
522 ** Stacking PART, VRULE, HRULE or TICK is not allowed.
523 **
524 ** If a number (which is valid to enter) is more than a
525 ** certain amount of characters, it is caught as an error.
526 ** While this is arguable, so is entering fixed numbers
527 ** with more than MAX_VNAME_LEN significant digits.
528 */
529 int rrd_parse_PVHLAST(
530 const char *const line,
531 unsigned int *const eaten,
532 graph_desc_t *const gdp,
533 image_desc_t *const im)
534 {
535 int i, j, k;
536 int colorfound = 0;
537 char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
538 static int spacecnt = 0;
540 if (spacecnt == 0) {
541 float one_space = gfx_get_text_width(im, 0,
542 im->
543 text_prop[TEXT_PROP_LEGEND].
544 font,
545 im->
546 text_prop[TEXT_PROP_LEGEND].
547 size,
548 im->tabwidth, " ") / 4.0;
549 float target_space = gfx_get_text_width(im, 0,
550 im->
551 text_prop
552 [TEXT_PROP_LEGEND].font,
553 im->
554 text_prop
555 [TEXT_PROP_LEGEND].size,
556 im->tabwidth, "oo");
558 spacecnt = target_space / one_space;
559 dprintf("- spacecnt: %i onespace: %f targspace: %f\n", spacecnt,
560 one_space, target_space);
561 }
564 dprintf("- parsing '%s'\n", &line[*eaten]);
566 /* have simpler code in the drawing section */
567 if (gdp->gf == GF_STACK) {
568 gdp->stack = 1;
569 }
571 i = scan_for_col(&line[*eaten], MAX_VNAME_LEN + 9, tmpstr);
572 if (line[*eaten + i] != '\0' && line[*eaten + i] != ':') {
573 rrd_set_error("Cannot parse line '%s'", line);
574 return 1;
575 }
577 j = i;
578 while (j > 0 && tmpstr[j] != '#')
579 j--;
581 if (j) {
582 tmpstr[j] = '\0';
583 }
584 /* We now have:
585 * tmpstr[0] containing vname
586 * tmpstr[j] if j!=0 then containing color
587 * i size of vname + color
588 * j if j!=0 then size of vname
589 */
591 /* Number or vname ?
592 * If it is an existing vname, that's OK, provided that it is a
593 * valid type (need time for VRULE, not a float)
594 * Else see if it parses as a number.
595 */
596 dprintf("- examining string '%s'\n", tmpstr);
597 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
598 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
599 switch (gdp->gf) {
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 long time_tmp = 0;
613 dprintf("- it is not an existing vname\n");
614 switch (gdp->gf) {
615 case GF_VRULE:
616 k = 0;
617 sscanf(tmpstr, "%li%n", &time_tmp, &k);
618 gdp->xrule = time_tmp;
619 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
620 dprintf("- found time: %li\n", gdp->xrule);
621 } else {
622 dprintf("- is is not a valid number: %li\n", gdp->xrule);
623 rrd_set_error
624 ("parameter '%s' does not represent time in line %s\n",
625 tmpstr, line);
626 return 1;
627 }
628 default:
629 k = 0;
630 sscanf(tmpstr, "%lf%n", &gdp->yrule, &k);
631 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
632 dprintf("- found number: %lf\n", gdp->yrule);
633 } else {
634 dprintf("- is is not a valid number: %lf\n", gdp->yrule);
635 rrd_set_error
636 ("parameter '%s' does not represent a number in line %s\n",
637 tmpstr, line);
638 return 1;
639 }
640 }
641 }
643 if (j) {
644 j++;
645 dprintf("- examining color '%s'\n", &tmpstr[j]);
646 if (rrd_parse_color(&tmpstr[j], gdp)) {
647 rrd_set_error("Could not parse color in '%s'", &tmpstr[j]);
648 return 1;
649 }
650 dprintf("- parsed color %0.0f,%0.0f,%0.0f,%0.0f\n", gdp->col.red,
651 gdp->col.green, gdp->col.blue, gdp->col.alpha);
652 colorfound = 1;
653 } else {
654 dprintf("- no color present in '%s'\n", tmpstr);
655 }
657 (*eaten) += i; /* after vname#color */
658 if (line[*eaten] != '\0') {
659 (*eaten)++; /* after colon */
660 }
662 if (gdp->gf == GF_TICK) {
663 dprintf("- parsing '%s'\n", &line[*eaten]);
664 dprintf("- looking for optional TICK number\n");
665 j = 0;
666 sscanf(&line[*eaten], "%lf%n", &gdp->yrule, &j);
667 if (j) {
668 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
669 rrd_set_error("Cannot parse TICK fraction '%s'", line);
670 return 1;
671 }
672 dprintf("- found number %f\n", gdp->yrule);
673 if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
674 rrd_set_error("Tick factor should be <= 1.0");
675 return 1;
676 }
677 (*eaten) += j;
678 } else {
679 dprintf("- not found, defaulting to 0.1\n");
680 gdp->yrule = 0.1;
681 }
682 if (line[*eaten] == '\0') {
683 dprintf("- done parsing line\n");
684 return 0;
685 } else {
686 if (line[*eaten] == ':') {
687 (*eaten)++;
688 } else {
689 rrd_set_error("Can't make sense of that TICK line");
690 return 1;
691 }
692 }
693 }
695 dprintf("- parsing '%s'\n", &line[*eaten]);
697 /* Legend is next. A legend without a color is an error.
698 ** Stacking an item without having a legend is OK however
699 ** then an empty legend should be specified.
700 ** LINE:val#color:STACK means legend is string "STACK"
701 ** LINE:val#color::STACK means no legend, and do STACK
702 ** LINE:val:STACK is an error (legend but no color)
703 ** LINE:val::STACK means no legend, and do STACK
704 */
705 if (colorfound) {
706 int err = 0;
707 char *linecp = strdup(line);
709 dprintf("- looking for optional legend\n");
711 dprintf("- examining '%s'\n", &line[*eaten]);
712 if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
713 int spi;
715 /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
716 * replaced by the color box later on. */
717 for (spi = 0; spi < spacecnt && (*eaten) > 1; spi++) {
718 linecp[--(*eaten)] = ' ';
719 }
720 }
722 if (rrd_parse_legend(linecp, eaten, gdp))
723 err = 1;
724 free(linecp);
725 if (err)
726 return 1;
728 dprintf("- found legend '%s'\n", &gdp->legend[2]);
729 } else {
730 dprintf("- skipping empty legend\n");
731 if (line[*eaten] != '\0' && line[*eaten] != ':') {
732 rrd_set_error("Legend set but no color: %s", &line[*eaten]);
733 return 1;
734 }
735 }
736 if (line[*eaten] == '\0') {
737 dprintf("- done parsing line\n");
738 return 0;
739 }
740 (*eaten)++; /* after colon */
742 /* PART, HRULE, VRULE and TICK cannot be stacked. */
743 if ((gdp->gf == GF_HRULE)
744 || (gdp->gf == GF_VRULE)
745 || (gdp->gf == GF_TICK)
746 )
747 return 0;
749 dprintf("- parsing '%s'\n", &line[*eaten]);
750 if (line[*eaten] != '\0') {
751 dprintf("- still more, should be STACK\n");
752 j = scan_for_col(&line[*eaten], 5, tmpstr);
753 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
754 /* not 5 chars */
755 rrd_set_error("STACK expected and not found");
756 return 1;
757 }
758 if (!strcmp("STACK", tmpstr)) {
759 dprintf("- found STACK\n");
760 gdp->stack = 1;
761 (*eaten) += j;
762 } else {
763 rrd_set_error("STACK expected and not found");
764 return 1;
765 }
766 }
767 if (line[*eaten] == '\0') {
768 dprintf("- done parsing line\n");
769 return 0;
770 }
771 (*eaten)++;
772 dprintf("- parsing '%s'\n", &line[*eaten]);
774 return 0;
775 }
777 int rrd_parse_make_vname(
778 const char *const line,
779 unsigned int *const eaten,
780 graph_desc_t *const gdp,
781 image_desc_t *const im)
782 {
783 char tmpstr[MAX_VNAME_LEN + 10];
784 int i = 0;
786 sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr, &i);
787 if (!i) {
788 rrd_set_error("Cannot parse vname from '%s'", line);
789 return 1;
790 }
791 dprintf("- found candidate '%s'\n", tmpstr);
793 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
794 rrd_set_error("Attempting to reuse '%s'", im->gdes[gdp->vidx].vname);
795 return 1;
796 }
797 strcpy(gdp->vname, tmpstr);
798 dprintf("- created vname '%s' vidx %lu\n", gdp->vname, im->gdes_c - 1);
799 (*eaten) += i;
800 return 0;
801 }
803 int rrd_parse_def(
804 const char *const line,
805 unsigned int *const eaten,
806 graph_desc_t *const gdp,
807 image_desc_t *const im)
808 {
809 int i = 0;
810 char command[7]; /* step, start, end, reduce */
811 char tmpstr[256];
812 struct rrd_time_value start_tv, end_tv;
813 time_t start_tmp = 0, end_tmp = 0;
814 char *parsetime_error = NULL;
816 start_tv.type = end_tv.type = ABSOLUTE_TIME;
817 start_tv.offset = end_tv.offset = 0;
818 localtime_r(&gdp->start, &start_tv.tm);
819 localtime_r(&gdp->end, &end_tv.tm);
821 dprintf("- parsing '%s'\n", &line[*eaten]);
822 dprintf("- from line '%s'\n", line);
824 if (rrd_parse_make_vname(line, eaten, gdp, im))
825 return 1;
826 i = scan_for_col(&line[*eaten], sizeof(gdp->rrd) - 1, gdp->rrd);
827 if (line[*eaten + i] != ':') {
828 rrd_set_error("Problems reading database name");
829 return 1;
830 }
831 (*eaten) += ++i;
832 dprintf("- using file '%s'\n", gdp->rrd);
834 i = 0;
835 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam, &i);
836 if (!i) {
837 rrd_set_error("Cannot parse DS in '%s'", line);
838 return 1;
839 }
840 (*eaten) += i;
841 dprintf("- using DS '%s'\n", gdp->ds_nam);
843 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf))
844 return 1;
845 gdp->cf_reduce = gdp->cf;
847 if (line[*eaten] == '\0')
848 return 0;
850 while (1) {
851 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
852 i = 0;
853 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
854 if (!i) {
855 rrd_set_error("Parse error in '%s'", line);
856 return 1;
857 }
858 (*eaten) += i;
859 dprintf("- processing '%s'\n", command);
860 if (!strcmp("reduce", command)) {
861 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf_reduce))
862 return 1;
863 if (line[*eaten] != '\0')
864 (*eaten)--;
865 } else if (!strcmp("step", command)) {
866 i = 0;
867 sscanf(&line[*eaten], "%lu%n", &gdp->step, &i);
868 gdp->step_orig = gdp->step;
869 (*eaten) += i;
870 dprintf("- using step %lu\n", gdp->step);
871 } else if (!strcmp("start", command)) {
872 i = scan_for_col(&line[*eaten], 255, tmpstr);
873 (*eaten) += i;
874 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
875 rrd_set_error("start time: %s", parsetime_error);
876 return 1;
877 }
878 dprintf("- done parsing: '%s'\n", &line[*eaten]);
879 } else if (!strcmp("end", command)) {
880 i = scan_for_col(&line[*eaten], 255, tmpstr);
881 (*eaten) += i;
882 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
883 rrd_set_error("end time: %s", parsetime_error);
884 return 1;
885 }
886 dprintf("- done parsing: '%s'\n", &line[*eaten]);
887 } else {
888 rrd_set_error("Parse error in '%s'", line);
889 return 1;
890 }
891 if (line[*eaten] == '\0')
892 break;
893 if (line[*eaten] != ':') {
894 dprintf("- Expected to see end of string but got '%s'\n",
895 &line[*eaten]);
896 rrd_set_error("Parse error in '%s'", line);
897 return 1;
898 }
899 (*eaten)++;
900 }
901 if (proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
902 /* error string is set in parsetime.c */
903 return 1;
904 }
905 if (start_tmp < 3600 * 24 * 365 * 10) {
906 rrd_set_error("the first entry to fetch should be "
907 "after 1980 (%ld)", start_tmp);
908 return 1;
909 }
911 if (end_tmp < start_tmp) {
912 rrd_set_error("start (%ld) should be less than end (%ld)",
913 start_tmp, end_tmp);
914 return 1;
915 }
917 gdp->start = start_tmp;
918 gdp->end = end_tmp;
919 gdp->start_orig = start_tmp;
920 gdp->end_orig = end_tmp;
922 dprintf("- start time %lu\n", gdp->start);
923 dprintf("- end time %lu\n", gdp->end);
925 return 0;
926 }
928 int rrd_parse_vdef(
929 const char *const line,
930 unsigned int *const eaten,
931 graph_desc_t *const gdp,
932 image_desc_t *const im)
933 {
934 char tmpstr[MAX_VNAME_LEN + 1]; /* vname\0 */
935 int i = 0;
937 dprintf("- parsing '%s'\n", &line[*eaten]);
938 if (rrd_parse_make_vname(line, eaten, gdp, im))
939 return 1;
941 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr, &i);
942 if (!i) {
943 rrd_set_error("Cannot parse line '%s'", line);
944 return 1;
945 }
946 if ((gdp->vidx = find_var(im, tmpstr)) < 0) {
947 rrd_set_error("Not a valid vname: %s in line %s", tmpstr, line);
948 return 1;
949 }
950 if (im->gdes[gdp->vidx].gf != GF_DEF && im->gdes[gdp->vidx].gf != GF_CDEF) {
951 rrd_set_error("variable '%s' not DEF nor "
952 "CDEF in VDEF '%s'", tmpstr, gdp->vname);
953 return 1;
954 }
955 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
956 (*eaten) += i;
958 dprintf("- calling vdef_parse with param '%s'\n", &line[*eaten]);
959 vdef_parse(gdp, &line[*eaten]);
960 while (line[*eaten] != '\0' && line[*eaten] != ':')
961 (*eaten)++;
963 return 0;
964 }
966 int rrd_parse_cdef(
967 const char *const line,
968 unsigned int *const eaten,
969 graph_desc_t *const gdp,
970 image_desc_t *const im)
971 {
972 dprintf("- parsing '%s'\n", &line[*eaten]);
973 if (rrd_parse_make_vname(line, eaten, gdp, im))
974 return 1;
975 if ((gdp->rpnp = rpn_parse((void *) im, &line[*eaten], &find_var_wrapper)
976 ) == NULL) {
977 rrd_set_error("invalid rpn expression in: %s", &line[*eaten]);
978 return 1;
979 };
980 while (line[*eaten] != '\0' && line[*eaten] != ':')
981 (*eaten)++;
982 return 0;
983 }
985 void rrd_graph_script(
986 int argc,
987 char *argv[],
988 image_desc_t *const im,
989 int optno)
990 {
991 int i;
993 /* save state for STACK backward compat function */
994 enum gf_en last_gf = GF_PRINT;
995 float last_linewidth = 0.0;
997 for (i = optind + optno; i < argc; i++) {
998 graph_desc_t *gdp;
999 unsigned int eaten = 0;
1001 if (gdes_alloc(im))
1002 return; /* the error string is already set */
1003 gdp = &im->gdes[im->gdes_c - 1];
1004 #ifdef DEBUG
1005 gdp->debug = 1;
1006 #endif
1008 if (rrd_parse_find_gf(argv[i], &eaten, gdp))
1009 return;
1011 switch (gdp->gf) {
1012 case GF_SHIFT: /* vname:value */
1013 if (rrd_parse_shift(argv[i], &eaten, gdp, im))
1014 return;
1015 break;
1016 case GF_TEXTALIGN: /* left|right|center|justified */
1017 if (rrd_parse_textalign(argv[i], &eaten, gdp))
1018 return;
1019 break;
1020 case GF_XPORT:
1021 if (rrd_parse_xport(argv[i], &eaten, gdp, im))
1022 return;
1023 break;
1024 case GF_PRINT: /* vname:CF:format -or- vname:format */
1025 im->prt_c++;
1026 case GF_GPRINT: /* vname:CF:format -or- vname:format */
1027 if (rrd_parse_print(argv[i], &eaten, gdp, im))
1028 return;
1029 break;
1030 case GF_COMMENT: /* text */
1031 if (rrd_parse_legend(argv[i], &eaten, gdp))
1032 return;
1033 break;
1034 case GF_VRULE: /* value#color[:legend] */
1035 case GF_HRULE: /* value#color[:legend] */
1036 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
1037 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
1038 case GF_TICK: /* vname#color[:num[:legend]] */
1039 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1040 return;
1041 last_gf = gdp->gf;
1042 last_linewidth = gdp->linewidth;
1043 break;
1044 case GF_STACK: /* vname-or-value[#color[:legend]] */
1045 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1046 return;
1047 if (last_gf == GF_LINE || last_gf == GF_AREA) {
1048 gdp->gf = last_gf;
1049 gdp->linewidth = last_linewidth;
1050 } else {
1051 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
1052 &argv[i][eaten], argv[i]);
1053 return;
1054 }
1055 break;
1056 /* data acquisition */
1057 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
1058 if (rrd_parse_def(argv[i], &eaten, gdp, im))
1059 return;
1060 break;
1061 case GF_CDEF: /* vname=rpn-expression */
1062 if (rrd_parse_cdef(argv[i], &eaten, gdp, im))
1063 return;
1064 break;
1065 case GF_VDEF: /* vname=rpn-expression */
1066 if (rrd_parse_vdef(argv[i], &eaten, gdp, im))
1067 return;
1068 break;
1069 }
1070 if (gdp->debug) {
1071 dprintf("used %i out of %zi chars\n", eaten, strlen(argv[i]));
1072 dprintf("parsed line: '%s'\n", argv[i]);
1073 dprintf("remaining: '%s'\n", &argv[i][eaten]);
1074 if (eaten >= strlen(argv[i]))
1075 dprintf("Command finished successfully\n");
1076 }
1077 if (eaten < strlen(argv[i])) {
1078 rrd_set_error("I don't understand '%s' in command: '%s'.",
1079 &argv[i][eaten], argv[i]);
1080 return;
1081 }
1082 }
1083 }