1 /****************************************************************************
2 * RRDtool 1.2.13 Copyright by Tobi Oetiker, 1997-2006
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 (const char * const, unsigned int *const, graph_desc_t *const);
52 int rrd_parse_legend (const char * const, unsigned int *const, graph_desc_t *const);
53 int rrd_parse_color (const char * const, graph_desc_t *const);
54 int rrd_parse_CF (const char * const, unsigned int *const, graph_desc_t *const, enum cf_en *const);
55 int rrd_parse_print (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
56 int rrd_parse_shift (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
57 int rrd_parse_xport (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
58 int rrd_parse_PVHLAST (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
59 int rrd_parse_make_vname (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
60 int rrd_parse_find_vname (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
61 int rrd_parse_def (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
62 int rrd_parse_vdef (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
63 int rrd_parse_cdef (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
67 int
68 rrd_parse_find_gf(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
69 char funcname[11],c1=0;
70 int i=0;
72 /* start an argument with DEBUG to be able to see how it is parsed */
73 sscanf(&line[*eaten], "DEBUG%n", &i);
74 if (i) {
75 gdp->debug=1;
76 (*eaten)+=i;
77 i=0;
78 dprintf("Scanning line '%s'\n",&line[*eaten]);
79 }
80 i=0;c1='\0';
81 sscanf(&line[*eaten], "%10[A-Z]%n%c", funcname, &i, &c1);
82 if (!i) {
83 rrd_set_error("Could not make sense out of '%s'",line);
84 return 1;
85 }
86 (*eaten)+=i;
87 if ((int)(gdp->gf=gf_conv(funcname)) == -1) {
88 rrd_set_error("'%s' is not a valid function name", funcname);
89 return 1;
90 } else {
91 dprintf("- found function name '%s'\n",funcname);
92 }
94 if (c1 == '\0') {
95 rrd_set_error("Function %s needs parameters. Line: %s\n",funcname,line);
96 return 1;
97 }
98 if (c1 == ':') (*eaten)++;
100 /* Some commands have a parameter before the colon
101 * (currently only LINE)
102 */
103 switch (gdp->gf) {
104 case GF_LINE:
105 if (c1 == ':') {
106 gdp->linewidth=1;
107 dprintf("- - using default width of 1\n");
108 } else {
109 i=0;sscanf(&line[*eaten],"%lf:%n",&gdp->linewidth,&i);
110 if (!i) {
111 rrd_set_error("Cannot parse line width '%s' in line '%s'\n",&line[*eaten],line);
112 return 1;
113 } else {
114 dprintf("- - scanned width %f\n",gdp->linewidth);
115 if (isnan(gdp->linewidth)) {
116 rrd_set_error("LINE width '%s' is not a number in line '%s'\n",&line[*eaten],line);
117 return 1;
118 }
119 if (isinf(gdp->linewidth)) {
120 rrd_set_error("LINE width '%s' is out of range in line '%s'\n",&line[*eaten],line);
121 return 1;
122 }
123 if (gdp->linewidth<0) {
124 rrd_set_error("LINE width '%s' is less than 0 in line '%s'\n",&line[*eaten],line);
125 return 1;
126 }
127 }
128 (*eaten)+=i;
129 }
130 break;
131 default:
132 if (c1 == ':') break;
133 rrd_set_error("Malformed '%s' command in line '%s'\n",&line[*eaten],line);
134 return 1;
135 }
136 return 0;
137 }
139 int
140 rrd_parse_legend(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
141 int i;
143 if (line[*eaten]=='\0' || line[*eaten]==':') {
144 dprintf("- no (or: empty) legend found\n");
145 return 0;
146 }
148 i=scan_for_col(&line[*eaten],FMT_LEG_LEN,gdp->legend);
150 (*eaten)+=i;
152 if (line[*eaten]!='\0' && line[*eaten]!=':') {
153 rrd_set_error("Legend too long");
154 return 1;
155 } else {
156 return 0;
157 }
158 }
160 int
161 rrd_parse_color(const char *const string, graph_desc_t *const gdp) {
162 unsigned int r=0,g=0,b=0,a=0,i;
164 /* matches the following formats:
165 ** RGB
166 ** RGBA
167 ** RRGGBB
168 ** RRGGBBAA
169 */
171 i=0;
172 while (string[i] && isxdigit((unsigned int)string[i])) i++;
173 if (string[i] != '\0') return 1; /* garbage follows hexdigits */
174 switch (i) {
175 case 3:
176 case 4:
177 sscanf(string, "%1x%1x%1x%1x",&r,&g,&b,&a);
178 r *= 0x11;
179 g *= 0x11;
180 b *= 0x11;
181 a *= 0x11;
182 if (i==3) a=0xFF;
183 break;
184 case 6:
185 case 8:
186 sscanf(string, "%02x%02x%02x%02x",&r,&g,&b,&a);
187 if (i==6) a=0xFF;
188 break;
189 default:
190 return 1; /* wrong number of digits */
191 }
192 gdp->col = r<<24|g<<16|b<<8|a;
193 return 0;
194 }
196 int
197 rrd_parse_CF(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, enum cf_en *cf) {
198 char symname[CF_NAM_SIZE];
199 int i=0;
201 sscanf(&line[*eaten], CF_NAM_FMT "%n", symname,&i);
202 if ((!i)||((line[(*eaten)+i]!='\0')&&(line[(*eaten)+i]!=':'))) {
203 rrd_set_error("Cannot parse CF in '%s'",line);
204 return 1;
205 }
206 (*eaten)+=i;
207 dprintf("- using CF '%s'\n",symname);
209 if ((int)(*cf = cf_conv(symname))==-1) {
210 rrd_set_error("Unknown CF '%s' in '%s'",symname,line);
211 return 1;
212 }
214 if (line[*eaten]!='\0') (*eaten)++;
215 return 0;
216 }
218 /* Try to match next token as a vname.
219 *
220 * Returns:
221 * -1 an error occured and the error string is set
222 * other the vname index number
223 *
224 * *eaten is incremented only when a vname is found.
225 */
226 int
227 rrd_parse_find_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
228 char tmpstr[MAX_VNAME_LEN+1];
229 int i;
230 long vidx;
232 i=0;sscanf(&line[*eaten], DEF_NAM_FMT "%n", tmpstr,&i);
233 if (!i) {
234 rrd_set_error("Could not parse line '%s'",line);
235 return -1;
236 }
237 if (line[*eaten+i]!=':' && line[*eaten+i]!='\0') {
238 rrd_set_error("Could not parse line '%s'",line);
239 return -1;
240 }
241 dprintf("- Considering '%s'\n",tmpstr);
243 if ((vidx=find_var(im,tmpstr))<0) {
244 dprintf("- Not a vname\n");
245 rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
246 return -1;
247 }
248 dprintf("- Found vname '%s' vidx '%li'\n",tmpstr,gdp->vidx);
249 if (line[*eaten+i]==':') i++;
250 (*eaten)+=i;
251 return vidx;
252 }
254 /* Parsing old-style xPRINT and new-style xPRINT */
255 int
256 rrd_parse_print(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
257 /* vname:CF:format in case of DEF-based vname
258 ** vname:CF:format in case of CDEF-based vname
259 ** vname:format[:strftime] in case of VDEF-based vname
260 */
261 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
263 switch (im->gdes[gdp->vidx].gf) {
264 case GF_DEF:
265 case GF_CDEF:
266 dprintf("- vname is of type DEF or CDEF, looking for CF\n");
267 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
268 break;
269 case GF_VDEF:
270 dprintf("- vname is of type VDEF\n");
271 break;
272 default:
273 rrd_set_error("Encountered unknown type variable '%s'",im->gdes[gdp->vidx].vname);
274 return 1;
275 }
277 if (rrd_parse_legend(line,eaten,gdp)) return 1;
278 /* for *PRINT the legend itself gets rendered later. We only
279 get the format at this juncture */
280 strcpy(gdp->format,gdp->legend);
281 gdp->legend[0]='\0';
282 /* this is a very crud test, parsing :style flags should be in a function */
283 if (im->gdes[gdp->vidx].gf == GF_VDEF && strcmp(line+(*eaten),":strftime")==0){
284 gdp->strftm = 1;
285 (*eaten)+=strlen(":strftime");
286 }
287 return 0;
288 }
290 /* SHIFT:_def_or_cdef:_vdef_or_number_
291 */
292 int
293 rrd_parse_shift(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
294 int i;
296 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
298 switch (im->gdes[gdp->vidx].gf) {
299 case GF_DEF:
300 case GF_CDEF:
301 dprintf("- vname is of type DEF or CDEF, OK\n");
302 break;
303 case GF_VDEF:
304 rrd_set_error("Cannot shift a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
305 return 1;
306 default:
307 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
308 return 1;
309 }
311 if ((gdp->shidx=rrd_parse_find_vname(line,eaten,gdp,im))>=0) {
312 switch (im->gdes[gdp->shidx].gf) {
313 case GF_DEF:
314 case GF_CDEF:
315 rrd_set_error("Offset cannot be a (C)DEF: '%s' in line '%s'\n",im->gdes[gdp->shidx].vname,line);
316 return 1;
317 case GF_VDEF:
318 dprintf("- vname is of type VDEF, OK\n");
319 break;
320 default:
321 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
322 return 1;
323 }
324 } else {
325 rrd_clear_error();
326 i=0; sscanf(&line[*eaten],"%li%n",&gdp->shval,&i);
327 if (i!=(int)strlen(&line[*eaten])) {
328 rrd_set_error("Not a valid offset: %s in line %s",&line[*eaten],line);
329 return 1;
330 }
331 (*eaten)+=i;
332 dprintf("- offset is number %li\n",gdp->shval);
333 gdp->shidx = -1;
334 }
335 return 0;
336 }
338 /* XPORT:_def_or_cdef[:legend]
339 */
340 int
341 rrd_parse_xport(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
342 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
344 switch (im->gdes[gdp->vidx].gf) {
345 case GF_DEF:
346 case GF_CDEF:
347 dprintf("- vname is of type DEF or CDEF, OK\n");
348 break;
349 case GF_VDEF:
350 rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
351 return 1;
352 default:
353 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
354 return 1;
355 }
356 dprintf("- looking for legend in '%s'\n",&line[*eaten]);
357 if (rrd_parse_legend(line,eaten,gdp)) return 1;
358 return 0;
359 }
361 /* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
362 ** is done in one function.
363 **
364 ** Stacking PART, VRULE, HRULE or TICK is not allowed.
365 **
366 ** If a number (which is valid to enter) is more than a
367 ** certain amount of characters, it is caught as an error.
368 ** While this is arguable, so is entering fixed numbers
369 ** with more than MAX_VNAME_LEN significant digits.
370 */
371 int
372 rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
373 int i,j,k;
374 int colorfound=0;
375 char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
376 static int spacecnt = 0;
378 if (spacecnt == 0) {
379 float one_space = gfx_get_text_width(im->canvas, 0,
380 im->text_prop[TEXT_PROP_LEGEND].font,
381 im->text_prop[TEXT_PROP_LEGEND].size,
382 im->tabwidth," ", 0) / 4.0;
383 float target_space = gfx_get_text_width(im->canvas, 0,
384 im->text_prop[TEXT_PROP_LEGEND].font,
385 im->text_prop[TEXT_PROP_LEGEND].size,
386 im->tabwidth,"oo", 0);
387 spacecnt = target_space / one_space;
388 dprintf("- spacecnt: %i onespace: %f targspace: %f\n",spacecnt,one_space,target_space);
389 }
392 dprintf("- parsing '%s'\n",&line[*eaten]);
394 /* have simpler code in the drawing section */
395 if ( gdp->gf == GF_STACK ){
396 gdp->stack=1;
397 }
399 i=scan_for_col(&line[*eaten],MAX_VNAME_LEN+9,tmpstr);
400 if (line[*eaten+i]!='\0' && line[*eaten+i]!=':') {
401 rrd_set_error("Cannot parse line '%s'",line);
402 return 1;
403 }
405 j=i; while (j>0 && tmpstr[j]!='#') j--;
407 if (j) {
408 tmpstr[j]='\0';
409 }
410 /* We now have:
411 * tmpstr[0] containing vname
412 * tmpstr[j] if j!=0 then containing color
413 * i size of vname + color
414 * j if j!=0 then size of vname
415 */
417 /* Number or vname ?
418 * If it is an existing vname, that's OK, provided that it is a
419 * valid type (need time for VRULE, not a float)
420 * Else see if it parses as a number.
421 */
422 dprintf("- examining string '%s'\n",tmpstr);
423 if ((gdp->vidx=find_var(im,tmpstr))>=0) {
424 dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
425 switch (gdp->gf) {
426 #ifdef WITH_PIECHART
427 case GF_PART:
428 #endif
429 case GF_VRULE:
430 case GF_HRULE:
431 if (im->gdes[gdp->vidx].gf != GF_VDEF) {
432 rrd_set_error("Using vname %s of wrong type in line %s\n",im->gdes[gdp->gf].vname,line);
433 return 1;
434 }
435 break;
436 default:;
437 }
438 } else {
439 dprintf("- it is not an existing vname\n");
440 switch (gdp->gf) {
441 case GF_VRULE:
442 k=0;sscanf(tmpstr,"%li%n",&gdp->xrule,&k);
443 if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
444 dprintf("- found time: %li\n",gdp->xrule);
445 } else {
446 dprintf("- is is not a valid number: %li\n",gdp->xrule);
447 rrd_set_error("parameter '%s' does not represent time in line %s\n",tmpstr,line);
448 return 1;
449 }
450 default:
451 k=0;sscanf(tmpstr,"%lf%n",&gdp->yrule,&k);
452 if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
453 dprintf("- found number: %f\n",gdp->yrule);
454 } else {
455 dprintf("- is is not a valid number: %li\n",gdp->xrule);
456 rrd_set_error("parameter '%s' does not represent a number in line %s\n",tmpstr,line);
457 return 1;
458 }
459 }
460 }
462 if (j) {
463 j++;
464 dprintf("- examining color '%s'\n",&tmpstr[j]);
465 if (rrd_parse_color(&tmpstr[j],gdp)) {
466 rrd_set_error("Could not parse color in '%s'",&tmpstr[j]);
467 return 1;
468 }
469 dprintf("- parsed color 0x%08x\n",(unsigned int)gdp->col);
470 colorfound=1;
471 } else {
472 dprintf("- no color present in '%s'\n",tmpstr);
473 }
475 (*eaten) += i; /* after vname#color */
476 if (line[*eaten]!='\0') {
477 (*eaten)++; /* after colon */
478 }
480 if (gdp->gf == GF_TICK) {
481 dprintf("- parsing '%s'\n",&line[*eaten]);
482 dprintf("- looking for optional TICK number\n");
483 j=0;
484 sscanf(&line[*eaten],"%lf%n",&gdp->yrule,&j);
485 if (j) {
486 if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
487 rrd_set_error("Cannot parse TICK fraction '%s'",line);
488 return 1;
489 }
490 dprintf("- found number %f\n",gdp->yrule);
491 if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
492 rrd_set_error("Tick factor should be <= 1.0");
493 return 1;
494 }
495 (*eaten)+=j;
496 } else {
497 dprintf("- not found, defaulting to 0.1\n");
498 gdp->yrule=0.1;
499 }
500 if (line[*eaten] == '\0') {
501 dprintf("- done parsing line\n");
502 return 0;
503 } else { if (line[*eaten] == ':') {
504 (*eaten)++;
505 } else {
506 rrd_set_error("Can't make sense of that TICK line");
507 return 1;
508 }
509 }
510 }
512 dprintf("- parsing '%s'\n",&line[*eaten]);
514 /* Legend is next. A legend without a color is an error.
515 ** Stacking an item without having a legend is OK however
516 ** then an empty legend should be specified.
517 ** LINE:val#color:STACK means legend is string "STACK"
518 ** LINE:val#color::STACK means no legend, and do STACK
519 ** LINE:val:STACK is an error (legend but no color)
520 ** LINE:val::STACK means no legend, and do STACK
521 */
522 if (colorfound) {
523 int err=0;
524 char *linecp = strdup(line);
525 dprintf("- looking for optional legend\n");
527 dprintf("- examining '%s'\n",&line[*eaten]);
528 if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
529 int spi;
530 /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
531 * replaced by the color box later on. */
532 for (spi=0;spi<spacecnt && (*eaten) > 1;spi++){
533 linecp[--(*eaten)]=' ';
534 }
535 }
537 if (rrd_parse_legend(linecp, eaten, gdp)) err=1;
538 free(linecp);
539 if (err) return 1;
541 dprintf("- found legend '%s'\n", &gdp->legend[2]);
542 } else {
543 dprintf("- skipping empty legend\n");
544 if (line[*eaten] != '\0' && line[*eaten] != ':') {
545 rrd_set_error("Legend set but no color: %s",&line[*eaten]);
546 return 1;
547 }
548 }
549 if (line[*eaten]=='\0') {
550 dprintf("- done parsing line\n");
551 return 0;
552 }
553 (*eaten)++; /* after colon */
555 /* PART, HRULE, VRULE and TICK cannot be stacked. */
556 if ( (gdp->gf == GF_HRULE)
557 || (gdp->gf == GF_VRULE)
558 #ifdef WITH_PIECHART
559 || (gdp->gf == GF_PART)
560 #endif
561 || (gdp->gf == GF_TICK)
562 ) return 0;
564 dprintf("- parsing '%s'\n",&line[*eaten]);
565 if (line[*eaten]!='\0') {
566 dprintf("- still more, should be STACK\n");
567 j=scan_for_col(&line[*eaten],5,tmpstr);
568 if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
569 /* not 5 chars */
570 rrd_set_error("Garbage found where STACK expected");
571 return 1;
572 }
573 if (!strcmp("STACK",tmpstr)) {
574 dprintf("- found STACK\n");
575 gdp->stack=1;
576 (*eaten)+=j;
577 } else {
578 rrd_set_error("Garbage found where STACK expected");
579 return 1;
580 }
581 }
582 if (line[*eaten]=='\0') {
583 dprintf("- done parsing line\n");
584 return 0;
585 }
586 (*eaten)++;
587 dprintf("- parsing '%s'\n",&line[*eaten]);
589 return 0;
590 }
592 int
593 rrd_parse_make_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
594 char tmpstr[MAX_VNAME_LEN + 10];
595 int i=0;
597 sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr,&i);
598 if (!i) {
599 rrd_set_error("Cannot parse vname from '%s'",line);
600 return 1;
601 }
602 dprintf("- found candidate '%s'\n",tmpstr);
604 if ((gdp->vidx=find_var(im,tmpstr))>=0) {
605 rrd_set_error("Attempting to reuse '%s'",im->gdes[gdp->vidx].vname);
606 return 1;
607 }
608 strcpy(gdp->vname,tmpstr);
609 dprintf("- created vname '%s' vidx %lu\n", gdp->vname,im->gdes_c-1);
610 (*eaten)+=i;
611 return 0;
612 }
614 int
615 rrd_parse_def(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
616 int i=0;
617 char command[7]; /* step, start, end, reduce */
618 char tmpstr[256];
619 struct rrd_time_value start_tv,end_tv;
620 time_t start_tmp=0,end_tmp=0;
621 char *parsetime_error=NULL;
623 start_tv.type = end_tv.type=ABSOLUTE_TIME;
624 start_tv.offset = end_tv.offset=0;
625 localtime_r(&gdp->start, &start_tv.tm);
626 localtime_r(&gdp->end, &end_tv.tm);
628 dprintf("- parsing '%s'\n",&line[*eaten]);
629 dprintf("- from line '%s'\n",line);
631 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
632 i=scan_for_col(&line[*eaten],254,gdp->rrd);
633 if (line[*eaten+i]!=':') {
634 rrd_set_error("Problems reading database name");
635 return 1;
636 }
637 (*eaten)+=++i;
638 dprintf("- using file '%s'\n",gdp->rrd);
640 i=0;
641 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam,&i);
642 if (!i) {
643 rrd_set_error("Cannot parse DS in '%s'",line);
644 return 1;
645 }
646 (*eaten)+=i;
647 dprintf("- using DS '%s'\n",gdp->ds_nam);
649 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
650 gdp->cf_reduce = gdp->cf;
652 if (line[*eaten]=='\0') return 0;
654 while (1) {
655 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
656 i=0;
657 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
658 if (!i) {
659 rrd_set_error("Parse error in '%s'",line);
660 return 1;
661 }
662 (*eaten)+=i;
663 dprintf("- processing '%s'\n",command);
664 if (!strcmp("reduce",command)) {
665 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf_reduce)) return 1;
666 if (line[*eaten] != '\0')
667 (*eaten)--;
668 } else if (!strcmp("step",command)) {
669 i=0;
670 sscanf(&line[*eaten],"%lu%n",&gdp->step,&i);
671 gdp->step_orig = gdp->step;
672 (*eaten)+=i;
673 dprintf("- using step %lu\n",gdp->step);
674 } else if (!strcmp("start",command)) {
675 i=scan_for_col(&line[*eaten],255,tmpstr);
676 (*eaten)+=i;
677 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
678 rrd_set_error( "start time: %s", parsetime_error );
679 return 1;
680 }
681 dprintf("- done parsing: '%s'\n",&line[*eaten]);
682 } else if (!strcmp("end",command)) {
683 i=scan_for_col(&line[*eaten],255,tmpstr);
684 (*eaten)+=i;
685 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
686 rrd_set_error( "end time: %s", parsetime_error );
687 return 1;
688 }
689 dprintf("- done parsing: '%s'\n",&line[*eaten]);
690 } else {
691 rrd_set_error("Parse error in '%s'",line);
692 return 1;
693 }
694 if (line[*eaten]=='\0') break;
695 if (line[*eaten]!=':') {
696 dprintf("- Expected to see end of string but got '%s'\n",\
697 &line[*eaten]);
698 rrd_set_error("Parse error in '%s'",line);
699 return 1;
700 }
701 (*eaten)++;
702 }
703 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
704 /* error string is set in parsetime.c */
705 return 1;
706 }
707 if (start_tmp < 3600*24*365*10) {
708 rrd_set_error("the first entry to fetch should be "
709 "after 1980 (%ld)",start_tmp);
710 return 1;
711 }
713 if (end_tmp < start_tmp) {
714 rrd_set_error("start (%ld) should be less than end (%ld)",
715 start_tmp, end_tmp);
716 return 1;
717 }
719 gdp->start = start_tmp;
720 gdp->end = end_tmp;
721 gdp->start_orig = start_tmp;
722 gdp->end_orig = end_tmp;
724 dprintf("- start time %lu\n",gdp->start);
725 dprintf("- end time %lu\n",gdp->end);
727 return 0;
728 }
730 int
731 rrd_parse_vdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
732 char tmpstr[MAX_VNAME_LEN+1]; /* vname\0 */
733 int i=0;
735 dprintf("- parsing '%s'\n",&line[*eaten]);
736 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
738 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr,&i);
739 if (!i) {
740 rrd_set_error("Cannot parse line '%s'",line);
741 return 1;
742 }
743 if ((gdp->vidx=find_var(im,tmpstr))<0) {
744 rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
745 return 1;
746 }
747 if ( im->gdes[gdp->vidx].gf != GF_DEF
748 && im->gdes[gdp->vidx].gf != GF_CDEF) {
749 rrd_set_error("variable '%s' not DEF nor "
750 "CDEF in VDEF '%s'", tmpstr,gdp->vname);
751 return 1;
752 }
753 dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
754 (*eaten)+=i;
756 dprintf("- calling vdef_parse with param '%s'\n",&line[*eaten]);
757 vdef_parse(gdp,&line[*eaten]);
758 while (line[*eaten]!='\0'&&line[*eaten]!=':')
759 (*eaten)++;
761 return 0;
762 }
764 int
765 rrd_parse_cdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
766 dprintf("- parsing '%s'\n",&line[*eaten]);
767 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
768 if ((gdp->rpnp = rpn_parse(
769 (void *)im,
770 &line[*eaten],
771 &find_var_wrapper)
772 )==NULL) {
773 rrd_set_error("invalid rpn expression in: %s",&line[*eaten]);
774 return 1;
775 };
776 while (line[*eaten]!='\0'&&line[*eaten]!=':')
777 (*eaten)++;
778 return 0;
779 }
781 void
782 rrd_graph_script(int argc, char *argv[], image_desc_t *const im, int optno) {
783 int i;
784 /* save state for STACK backward compat function */
785 enum gf_en last_gf=GF_PRINT;
786 float last_linewidth=0.0;
788 for (i=optind+optno;i<argc;i++) {
789 graph_desc_t *gdp;
790 unsigned int eaten=0;
792 if (gdes_alloc(im)) return; /* the error string is already set */
793 gdp = &im->gdes[im->gdes_c-1];
794 #ifdef DEBUG
795 gdp->debug = 1;
796 #endif
798 if (rrd_parse_find_gf(argv[i],&eaten,gdp)) return;
800 switch (gdp->gf) {
801 case GF_SHIFT: /* vname:value */
802 if (rrd_parse_shift(argv[i],&eaten,gdp,im)) return;
803 break;
804 case GF_XPORT:
805 if (rrd_parse_xport(argv[i],&eaten,gdp,im)) return;
806 break;
807 case GF_PRINT: /* vname:CF:format -or- vname:format */
808 im->prt_c++;
809 case GF_GPRINT: /* vname:CF:format -or- vname:format */
810 if (rrd_parse_print(argv[i],&eaten,gdp,im)) return;
811 break;
812 case GF_COMMENT: /* text */
813 if (rrd_parse_legend(argv[i],&eaten,gdp)) return;
814 break;
815 #ifdef WITH_PIECHART
816 case GF_PART: /* value[#color[:legend]] */
817 #endif
818 case GF_VRULE: /* value#color[:legend] */
819 case GF_HRULE: /* value#color[:legend] */
820 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
821 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
822 case GF_TICK: /* vname#color[:num[:legend]] */
823 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
824 last_gf = gdp->gf;
825 last_linewidth = gdp->linewidth;
826 break;
827 case GF_STACK: /* vname-or-value[#color[:legend]] */
828 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
829 if (last_gf == GF_LINE || last_gf == GF_AREA){
830 gdp->gf = last_gf;
831 gdp->linewidth = last_linewidth;
832 } else {
833 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
834 &argv[i][eaten],argv[i]);
835 return;
836 }
837 break;
838 /* data acquisition */
839 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
840 if (rrd_parse_def(argv[i],&eaten,gdp,im)) return;
841 break;
842 case GF_CDEF: /* vname=rpn-expression */
843 if (rrd_parse_cdef(argv[i],&eaten,gdp,im)) return;
844 break;
845 case GF_VDEF: /* vname=rpn-expression */
846 if (rrd_parse_vdef(argv[i],&eaten,gdp,im)) return;
847 break;
848 }
849 if (gdp->debug) {
850 dprintf("used %i out of %i chars\n",eaten,strlen(argv[i]));
851 dprintf("parsed line: '%s'\n",argv[i]);
852 dprintf("remaining: '%s'\n",&argv[i][eaten]);
853 if (eaten >= strlen(argv[i]))
854 dprintf("Command finished successfully\n");
855 }
856 if (eaten < strlen(argv[i])) {
857 rrd_set_error("Garbage '%s' after command:\n%s",
858 &argv[i][eaten],argv[i]);
859 return;
860 }
861 }
862 }