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 long time_tmp = 0;
449 rrd_clear_error();
450 i = 0;
451 sscanf(&line[*eaten], "%li%n", &time_tmp, &i);
452 gdp->shval = time_tmp;
453 if (i != (int) strlen(&line[*eaten])) {
454 rrd_set_error("Not a valid offset: %s in line %s", &line[*eaten],
455 line);
456 return 1;
457 }
458 (*eaten) += i;
459 dprintf("- offset is number %li\n", gdp->shval);
460 gdp->shidx = -1;
461 }
462 return 0;
463 }
465 /* XPORT:_def_or_cdef[:legend]
466 */
467 int rrd_parse_xport(
468 const char *const line,
469 unsigned int *const eaten,
470 graph_desc_t *const gdp,
471 image_desc_t *const im)
472 {
473 if ((gdp->vidx = rrd_parse_find_vname(line, eaten, gdp, im)) < 0)
474 return 1;
476 switch (im->gdes[gdp->vidx].gf) {
477 case GF_DEF:
478 case GF_CDEF:
479 dprintf("- vname is of type DEF or CDEF, OK\n");
480 break;
481 case GF_VDEF:
482 rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",
483 im->gdes[gdp->vidx].vname, line);
484 return 1;
485 default:
486 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",
487 im->gdes[gdp->vidx].vname, line);
488 return 1;
489 }
490 dprintf("- looking for legend in '%s'\n", &line[*eaten]);
491 if (rrd_parse_legend(line, eaten, gdp))
492 return 1;
493 return 0;
494 }
496 int rrd_parse_textalign(
497 const char *const line,
498 unsigned int *const eaten,
499 graph_desc_t *const gdp)
500 {
501 if (strcmp(&line[*eaten], "left") == 0) {
502 gdp->txtalign = TXA_LEFT;
503 } else if (strcmp(&line[*eaten], "right") == 0) {
504 gdp->txtalign = TXA_RIGHT;
505 } else if (strcmp(&line[*eaten], "justified") == 0) {
506 gdp->txtalign = TXA_JUSTIFIED;
507 } else if (strcmp(&line[*eaten], "center") == 0) {
508 gdp->txtalign = TXA_CENTER;
509 } else {
510 rrd_set_error("Unknown alignement type '%s'", &line[*eaten]);
511 return 1;
512 }
513 *eaten += strlen(&line[*eaten]);
514 return 0;
515 }
518 /* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
519 ** is done in one function.
520 **
521 ** Stacking PART, VRULE, HRULE or TICK is not allowed.
522 **
523 ** If a number (which is valid to enter) is more than a
524 ** certain amount of characters, it is caught as an error.
525 ** While this is arguable, so is entering fixed numbers
526 ** with more than MAX_VNAME_LEN significant digits.
527 */
528 int rrd_parse_PVHLAST(
529 const char *const line,
530 unsigned int *const eaten,
531 graph_desc_t *const gdp,
532 image_desc_t *const im)
533 {
534 int i, j, k;
535 int colorfound = 0;
536 char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
537 static int spacecnt = 0;
539 if (spacecnt == 0) {
540 float one_space = gfx_get_text_width(im, 0,
541 im->
542 text_prop[TEXT_PROP_LEGEND].
543 font,
544 im->
545 text_prop[TEXT_PROP_LEGEND].
546 size,
547 im->tabwidth, " ") / 4.0;
548 float target_space = gfx_get_text_width(im, 0,
549 im->
550 text_prop
551 [TEXT_PROP_LEGEND].font,
552 im->
553 text_prop
554 [TEXT_PROP_LEGEND].size,
555 im->tabwidth, "oo");
557 spacecnt = target_space / one_space;
558 dprintf("- spacecnt: %i onespace: %f targspace: %f\n", spacecnt,
559 one_space, target_space);
560 }
563 dprintf("- parsing '%s'\n", &line[*eaten]);
565 /* have simpler code in the drawing section */
566 if (gdp->gf == GF_STACK) {
567 gdp->stack = 1;
568 }
570 i = scan_for_col(&line[*eaten], MAX_VNAME_LEN + 9, tmpstr);
571 if (line[*eaten + i] != '\0' && line[*eaten + i] != ':') {
572 rrd_set_error("Cannot parse line '%s'", line);
573 return 1;
574 }
576 j = i;
577 while (j > 0 && tmpstr[j] != '#')
578 j--;
580 if (j) {
581 tmpstr[j] = '\0';
582 }
583 /* We now have:
584 * tmpstr[0] containing vname
585 * tmpstr[j] if j!=0 then containing color
586 * i size of vname + color
587 * j if j!=0 then size of vname
588 */
590 /* Number or vname ?
591 * If it is an existing vname, that's OK, provided that it is a
592 * valid type (need time for VRULE, not a float)
593 * Else see if it parses as a number.
594 */
595 dprintf("- examining string '%s'\n", tmpstr);
596 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
597 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
598 switch (gdp->gf) {
599 case GF_VRULE:
600 case GF_HRULE:
601 if (im->gdes[gdp->vidx].gf != GF_VDEF) {
602 rrd_set_error("Using vname %s of wrong type in line %s\n",
603 im->gdes[gdp->gf].vname, line);
604 return 1;
605 }
606 break;
607 default:;
608 }
609 } else {
610 long time_tmp = 0;
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",&time_tmp , &k);
616 gdp->xrule = time_tmp;
617 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
618 dprintf("- found time: %li\n", gdp->xrule);
619 } else {
620 dprintf("- is is not a valid number: %li\n", gdp->xrule);
621 rrd_set_error
622 ("parameter '%s' does not represent time in line %s\n",
623 tmpstr, line);
624 return 1;
625 }
626 default:
627 k = 0;
628 sscanf(tmpstr, "%lf%n", &gdp->yrule, &k);
629 if (((j != 0) && (k == j)) || ((j == 0) && (k == i))) {
630 dprintf("- found number: %lf\n", gdp->yrule);
631 } else {
632 dprintf("- is is not a valid number: %lf\n", gdp->yrule);
633 rrd_set_error
634 ("parameter '%s' does not represent a number in line %s\n",
635 tmpstr, line);
636 return 1;
637 }
638 }
639 }
641 if (j) {
642 j++;
643 dprintf("- examining color '%s'\n", &tmpstr[j]);
644 if (rrd_parse_color(&tmpstr[j], gdp)) {
645 rrd_set_error("Could not parse color in '%s'", &tmpstr[j]);
646 return 1;
647 }
648 dprintf("- parsed color %0.0f,%0.0f,%0.0f,%0.0f\n", gdp->col.red,
649 gdp->col.green, gdp->col.blue, gdp->col.alpha);
650 colorfound = 1;
651 } else {
652 dprintf("- no color present in '%s'\n", tmpstr);
653 }
655 (*eaten) += i; /* after vname#color */
656 if (line[*eaten] != '\0') {
657 (*eaten)++; /* after colon */
658 }
660 if (gdp->gf == GF_TICK) {
661 dprintf("- parsing '%s'\n", &line[*eaten]);
662 dprintf("- looking for optional TICK number\n");
663 j = 0;
664 sscanf(&line[*eaten], "%lf%n", &gdp->yrule, &j);
665 if (j) {
666 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
667 rrd_set_error("Cannot parse TICK fraction '%s'", line);
668 return 1;
669 }
670 dprintf("- found number %f\n", gdp->yrule);
671 if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
672 rrd_set_error("Tick factor should be <= 1.0");
673 return 1;
674 }
675 (*eaten) += j;
676 } else {
677 dprintf("- not found, defaulting to 0.1\n");
678 gdp->yrule = 0.1;
679 }
680 if (line[*eaten] == '\0') {
681 dprintf("- done parsing line\n");
682 return 0;
683 } else {
684 if (line[*eaten] == ':') {
685 (*eaten)++;
686 } else {
687 rrd_set_error("Can't make sense of that TICK line");
688 return 1;
689 }
690 }
691 }
693 dprintf("- parsing '%s'\n", &line[*eaten]);
695 /* Legend is next. A legend without a color is an error.
696 ** Stacking an item without having a legend is OK however
697 ** then an empty legend should be specified.
698 ** LINE:val#color:STACK means legend is string "STACK"
699 ** LINE:val#color::STACK means no legend, and do STACK
700 ** LINE:val:STACK is an error (legend but no color)
701 ** LINE:val::STACK means no legend, and do STACK
702 */
703 if (colorfound) {
704 int err = 0;
705 char *linecp = strdup(line);
707 dprintf("- looking for optional legend\n");
709 dprintf("- examining '%s'\n", &line[*eaten]);
710 if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
711 int spi;
713 /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
714 * replaced by the color box later on. */
715 for (spi = 0; spi < spacecnt && (*eaten) > 1; spi++) {
716 linecp[--(*eaten)] = ' ';
717 }
718 }
720 if (rrd_parse_legend(linecp, eaten, gdp))
721 err = 1;
722 free(linecp);
723 if (err)
724 return 1;
726 dprintf("- found legend '%s'\n", &gdp->legend[2]);
727 } else {
728 dprintf("- skipping empty legend\n");
729 if (line[*eaten] != '\0' && line[*eaten] != ':') {
730 rrd_set_error("Legend set but no color: %s", &line[*eaten]);
731 return 1;
732 }
733 }
734 if (line[*eaten] == '\0') {
735 dprintf("- done parsing line\n");
736 return 0;
737 }
738 (*eaten)++; /* after colon */
740 /* PART, HRULE, VRULE and TICK cannot be stacked. */
741 if ((gdp->gf == GF_HRULE)
742 || (gdp->gf == GF_VRULE)
743 || (gdp->gf == GF_TICK)
744 )
745 return 0;
747 dprintf("- parsing '%s'\n", &line[*eaten]);
748 if (line[*eaten] != '\0') {
749 dprintf("- still more, should be STACK\n");
750 j = scan_for_col(&line[*eaten], 5, tmpstr);
751 if (line[*eaten + j] != '\0' && line[*eaten + j] != ':') {
752 /* not 5 chars */
753 rrd_set_error("STACK expected and not found");
754 return 1;
755 }
756 if (!strcmp("STACK", tmpstr)) {
757 dprintf("- found STACK\n");
758 gdp->stack = 1;
759 (*eaten) += j;
760 } else {
761 rrd_set_error("STACK expected and not found");
762 return 1;
763 }
764 }
765 if (line[*eaten] == '\0') {
766 dprintf("- done parsing line\n");
767 return 0;
768 }
769 (*eaten)++;
770 dprintf("- parsing '%s'\n", &line[*eaten]);
772 return 0;
773 }
775 int rrd_parse_make_vname(
776 const char *const line,
777 unsigned int *const eaten,
778 graph_desc_t *const gdp,
779 image_desc_t *const im)
780 {
781 char tmpstr[MAX_VNAME_LEN + 10];
782 int i = 0;
784 sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr, &i);
785 if (!i) {
786 rrd_set_error("Cannot parse vname from '%s'", line);
787 return 1;
788 }
789 dprintf("- found candidate '%s'\n", tmpstr);
791 if ((gdp->vidx = find_var(im, tmpstr)) >= 0) {
792 rrd_set_error("Attempting to reuse '%s'", im->gdes[gdp->vidx].vname);
793 return 1;
794 }
795 strcpy(gdp->vname, tmpstr);
796 dprintf("- created vname '%s' vidx %lu\n", gdp->vname, im->gdes_c - 1);
797 (*eaten) += i;
798 return 0;
799 }
801 int rrd_parse_def(
802 const char *const line,
803 unsigned int *const eaten,
804 graph_desc_t *const gdp,
805 image_desc_t *const im)
806 {
807 int i = 0;
808 char command[7]; /* step, start, end, reduce */
809 char tmpstr[256];
810 struct rrd_time_value start_tv, end_tv;
811 time_t start_tmp = 0, end_tmp = 0;
812 char *parsetime_error = NULL;
814 start_tv.type = end_tv.type = ABSOLUTE_TIME;
815 start_tv.offset = end_tv.offset = 0;
816 localtime_r(&gdp->start, &start_tv.tm);
817 localtime_r(&gdp->end, &end_tv.tm);
819 dprintf("- parsing '%s'\n", &line[*eaten]);
820 dprintf("- from line '%s'\n", line);
822 if (rrd_parse_make_vname(line, eaten, gdp, im))
823 return 1;
824 i = scan_for_col(&line[*eaten], sizeof(gdp->rrd) - 1, gdp->rrd);
825 if (line[*eaten + i] != ':') {
826 rrd_set_error("Problems reading database name");
827 return 1;
828 }
829 (*eaten) += ++i;
830 dprintf("- using file '%s'\n", gdp->rrd);
832 i = 0;
833 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam, &i);
834 if (!i) {
835 rrd_set_error("Cannot parse DS in '%s'", line);
836 return 1;
837 }
838 (*eaten) += i;
839 dprintf("- using DS '%s'\n", gdp->ds_nam);
841 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf))
842 return 1;
843 gdp->cf_reduce = gdp->cf;
845 if (line[*eaten] == '\0')
846 return 0;
848 while (1) {
849 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
850 i = 0;
851 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
852 if (!i) {
853 rrd_set_error("Parse error in '%s'", line);
854 return 1;
855 }
856 (*eaten) += i;
857 dprintf("- processing '%s'\n", command);
858 if (!strcmp("reduce", command)) {
859 if (rrd_parse_CF(line, eaten, gdp, &gdp->cf_reduce))
860 return 1;
861 if (line[*eaten] != '\0')
862 (*eaten)--;
863 } else if (!strcmp("step", command)) {
864 i = 0;
865 sscanf(&line[*eaten], "%lu%n", &gdp->step, &i);
866 gdp->step_orig = gdp->step;
867 (*eaten) += i;
868 dprintf("- using step %lu\n", gdp->step);
869 } else if (!strcmp("start", command)) {
870 i = scan_for_col(&line[*eaten], 255, tmpstr);
871 (*eaten) += i;
872 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
873 rrd_set_error("start time: %s", parsetime_error);
874 return 1;
875 }
876 dprintf("- done parsing: '%s'\n", &line[*eaten]);
877 } else if (!strcmp("end", command)) {
878 i = scan_for_col(&line[*eaten], 255, tmpstr);
879 (*eaten) += i;
880 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
881 rrd_set_error("end time: %s", parsetime_error);
882 return 1;
883 }
884 dprintf("- done parsing: '%s'\n", &line[*eaten]);
885 } else {
886 rrd_set_error("Parse error in '%s'", line);
887 return 1;
888 }
889 if (line[*eaten] == '\0')
890 break;
891 if (line[*eaten] != ':') {
892 dprintf("- Expected to see end of string but got '%s'\n",
893 &line[*eaten]);
894 rrd_set_error("Parse error in '%s'", line);
895 return 1;
896 }
897 (*eaten)++;
898 }
899 if (proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
900 /* error string is set in parsetime.c */
901 return 1;
902 }
903 if (start_tmp < 3600 * 24 * 365 * 10) {
904 rrd_set_error("the first entry to fetch should be "
905 "after 1980 (%ld)", start_tmp);
906 return 1;
907 }
909 if (end_tmp < start_tmp) {
910 rrd_set_error("start (%ld) should be less than end (%ld)",
911 start_tmp, end_tmp);
912 return 1;
913 }
915 gdp->start = start_tmp;
916 gdp->end = end_tmp;
917 gdp->start_orig = start_tmp;
918 gdp->end_orig = end_tmp;
920 dprintf("- start time %lu\n", gdp->start);
921 dprintf("- end time %lu\n", gdp->end);
923 return 0;
924 }
926 int rrd_parse_vdef(
927 const char *const line,
928 unsigned int *const eaten,
929 graph_desc_t *const gdp,
930 image_desc_t *const im)
931 {
932 char tmpstr[MAX_VNAME_LEN + 1]; /* vname\0 */
933 int i = 0;
935 dprintf("- parsing '%s'\n", &line[*eaten]);
936 if (rrd_parse_make_vname(line, eaten, gdp, im))
937 return 1;
939 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr, &i);
940 if (!i) {
941 rrd_set_error("Cannot parse line '%s'", line);
942 return 1;
943 }
944 if ((gdp->vidx = find_var(im, tmpstr)) < 0) {
945 rrd_set_error("Not a valid vname: %s in line %s", tmpstr, line);
946 return 1;
947 }
948 if (im->gdes[gdp->vidx].gf != GF_DEF && im->gdes[gdp->vidx].gf != GF_CDEF) {
949 rrd_set_error("variable '%s' not DEF nor "
950 "CDEF in VDEF '%s'", tmpstr, gdp->vname);
951 return 1;
952 }
953 dprintf("- found vname: '%s' vidx %li\n", tmpstr, gdp->vidx);
954 (*eaten) += i;
956 dprintf("- calling vdef_parse with param '%s'\n", &line[*eaten]);
957 vdef_parse(gdp, &line[*eaten]);
958 while (line[*eaten] != '\0' && line[*eaten] != ':')
959 (*eaten)++;
961 return 0;
962 }
964 int rrd_parse_cdef(
965 const char *const line,
966 unsigned int *const eaten,
967 graph_desc_t *const gdp,
968 image_desc_t *const im)
969 {
970 dprintf("- parsing '%s'\n", &line[*eaten]);
971 if (rrd_parse_make_vname(line, eaten, gdp, im))
972 return 1;
973 if ((gdp->rpnp = rpn_parse((void *) im, &line[*eaten], &find_var_wrapper)
974 ) == NULL) {
975 rrd_set_error("invalid rpn expression in: %s", &line[*eaten]);
976 return 1;
977 };
978 while (line[*eaten] != '\0' && line[*eaten] != ':')
979 (*eaten)++;
980 return 0;
981 }
983 void rrd_graph_script(
984 int argc,
985 char *argv[],
986 image_desc_t *const im,
987 int optno)
988 {
989 int i;
991 /* save state for STACK backward compat function */
992 enum gf_en last_gf = GF_PRINT;
993 float last_linewidth = 0.0;
995 for (i = optind + optno; i < argc; i++) {
996 graph_desc_t *gdp;
997 unsigned int eaten = 0;
999 if (gdes_alloc(im))
1000 return; /* the error string is already set */
1001 gdp = &im->gdes[im->gdes_c - 1];
1002 #ifdef DEBUG
1003 gdp->debug = 1;
1004 #endif
1006 if (rrd_parse_find_gf(argv[i], &eaten, gdp))
1007 return;
1009 switch (gdp->gf) {
1010 case GF_SHIFT: /* vname:value */
1011 if (rrd_parse_shift(argv[i], &eaten, gdp, im))
1012 return;
1013 break;
1014 case GF_TEXTALIGN: /* left|right|center|justified */
1015 if (rrd_parse_textalign(argv[i], &eaten, gdp))
1016 return;
1017 break;
1018 case GF_XPORT:
1019 if (rrd_parse_xport(argv[i], &eaten, gdp, im))
1020 return;
1021 break;
1022 case GF_PRINT: /* vname:CF:format -or- vname:format */
1023 im->prt_c++;
1024 case GF_GPRINT: /* vname:CF:format -or- vname:format */
1025 if (rrd_parse_print(argv[i], &eaten, gdp, im))
1026 return;
1027 break;
1028 case GF_COMMENT: /* text */
1029 if (rrd_parse_legend(argv[i], &eaten, gdp))
1030 return;
1031 break;
1032 case GF_VRULE: /* value#color[:legend] */
1033 case GF_HRULE: /* value#color[:legend] */
1034 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
1035 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
1036 case GF_TICK: /* vname#color[:num[:legend]] */
1037 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1038 return;
1039 last_gf = gdp->gf;
1040 last_linewidth = gdp->linewidth;
1041 break;
1042 case GF_STACK: /* vname-or-value[#color[:legend]] */
1043 if (rrd_parse_PVHLAST(argv[i], &eaten, gdp, im))
1044 return;
1045 if (last_gf == GF_LINE || last_gf == GF_AREA) {
1046 gdp->gf = last_gf;
1047 gdp->linewidth = last_linewidth;
1048 } else {
1049 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
1050 &argv[i][eaten], argv[i]);
1051 return;
1052 }
1053 break;
1054 /* data acquisition */
1055 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
1056 if (rrd_parse_def(argv[i], &eaten, gdp, im))
1057 return;
1058 break;
1059 case GF_CDEF: /* vname=rpn-expression */
1060 if (rrd_parse_cdef(argv[i], &eaten, gdp, im))
1061 return;
1062 break;
1063 case GF_VDEF: /* vname=rpn-expression */
1064 if (rrd_parse_vdef(argv[i], &eaten, gdp, im))
1065 return;
1066 break;
1067 }
1068 if (gdp->debug) {
1069 dprintf("used %i out of %zi chars\n", eaten, strlen(argv[i]));
1070 dprintf("parsed line: '%s'\n", argv[i]);
1071 dprintf("remaining: '%s'\n", &argv[i][eaten]);
1072 if (eaten >= strlen(argv[i]))
1073 dprintf("Command finished successfully\n");
1074 }
1075 if (eaten < strlen(argv[i])) {
1076 rrd_set_error("I don't understand '%s' in command: '%s'.",
1077 &argv[i][eaten], argv[i]);
1078 return;
1079 }
1080 }
1081 }