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 (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 if (line[*eaten] == '\0') {
137 rrd_set_error("Expected some arguments after '%s'\n",line);
138 return 1;
139 }
140 return 0;
141 }
143 int
144 rrd_parse_legend(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
145 int i;
147 if (line[*eaten]=='\0' || line[*eaten]==':') {
148 dprintf("- no (or: empty) legend found\n");
149 return 0;
150 }
152 i=scan_for_col(&line[*eaten],FMT_LEG_LEN,gdp->legend);
154 (*eaten)+=i;
156 if (line[*eaten]!='\0' && line[*eaten]!=':') {
157 rrd_set_error("Legend too long");
158 return 1;
159 } else {
160 return 0;
161 }
162 }
164 int
165 rrd_parse_color(const char *const string, graph_desc_t *const gdp) {
166 unsigned int r=0,g=0,b=0,a=0,i;
168 /* matches the following formats:
169 ** RGB
170 ** RGBA
171 ** RRGGBB
172 ** RRGGBBAA
173 */
175 i=0;
176 while (string[i] && isxdigit((unsigned int)string[i])) i++;
177 if (string[i] != '\0') return 1; /* garbage follows hexdigits */
178 switch (i) {
179 case 3:
180 case 4:
181 sscanf(string, "%1x%1x%1x%1x",&r,&g,&b,&a);
182 r *= 0x11;
183 g *= 0x11;
184 b *= 0x11;
185 a *= 0x11;
186 if (i==3) a=0xFF;
187 break;
188 case 6:
189 case 8:
190 sscanf(string, "%02x%02x%02x%02x",&r,&g,&b,&a);
191 if (i==6) a=0xFF;
192 break;
193 default:
194 return 1; /* wrong number of digits */
195 }
196 gdp->col = r<<24|g<<16|b<<8|a;
197 return 0;
198 }
200 int
201 rrd_parse_CF(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, enum cf_en *cf) {
202 char symname[CF_NAM_SIZE];
203 int i=0;
205 sscanf(&line[*eaten], CF_NAM_FMT "%n", symname,&i);
206 if ((!i)||((line[(*eaten)+i]!='\0')&&(line[(*eaten)+i]!=':'))) {
207 rrd_set_error("Cannot parse CF in '%s'",line);
208 return 1;
209 }
210 (*eaten)+=i;
211 dprintf("- using CF '%s'\n",symname);
213 if ((int)(*cf = cf_conv(symname))==-1) {
214 rrd_set_error("Unknown CF '%s' in '%s'",symname,line);
215 return 1;
216 }
218 if (line[*eaten]!='\0') (*eaten)++;
219 return 0;
220 }
222 /* Try to match next token as a vname.
223 *
224 * Returns:
225 * -1 an error occured and the error string is set
226 * other the vname index number
227 *
228 * *eaten is incremented only when a vname is found.
229 */
230 int
231 rrd_parse_find_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
232 char tmpstr[MAX_VNAME_LEN+1];
233 int i;
234 long vidx;
236 i=0;sscanf(&line[*eaten], DEF_NAM_FMT "%n", tmpstr,&i);
237 if (!i) {
238 rrd_set_error("Could not parse line '%s'",line);
239 return -1;
240 }
241 if (line[*eaten+i]!=':' && line[*eaten+i]!='\0') {
242 rrd_set_error("Could not parse line '%s'",line);
243 return -1;
244 }
245 dprintf("- Considering '%s'\n",tmpstr);
247 if ((vidx=find_var(im,tmpstr))<0) {
248 dprintf("- Not a vname\n");
249 rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
250 return -1;
251 }
252 dprintf("- Found vname '%s' vidx '%li'\n",tmpstr,gdp->vidx);
253 if (line[*eaten+i]==':') i++;
254 (*eaten)+=i;
255 return vidx;
256 }
258 /* Parsing old-style xPRINT and new-style xPRINT */
259 int
260 rrd_parse_print(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
261 /* vname:CF:format in case of DEF-based vname
262 ** vname:CF:format in case of CDEF-based vname
263 ** vname:format[:strftime] in case of VDEF-based vname
264 */
265 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
267 switch (im->gdes[gdp->vidx].gf) {
268 case GF_DEF:
269 case GF_CDEF:
270 dprintf("- vname is of type DEF or CDEF, looking for CF\n");
271 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
272 break;
273 case GF_VDEF:
274 dprintf("- vname is of type VDEF\n");
275 break;
276 default:
277 rrd_set_error("Encountered unknown type variable '%s'",im->gdes[gdp->vidx].vname);
278 return 1;
279 }
281 if (rrd_parse_legend(line,eaten,gdp)) return 1;
282 /* for *PRINT the legend itself gets rendered later. We only
283 get the format at this juncture */
284 strcpy(gdp->format,gdp->legend);
285 gdp->legend[0]='\0';
286 /* this is a very crud test, parsing :style flags should be in a function */
287 if (im->gdes[gdp->vidx].gf == GF_VDEF && strcmp(line+(*eaten),":strftime")==0){
288 gdp->strftm = 1;
289 (*eaten)+=strlen(":strftime");
290 }
291 return 0;
292 }
294 /* SHIFT:_def_or_cdef:_vdef_or_number_
295 */
296 int
297 rrd_parse_shift(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
298 int i;
299 long time_tmp = 0;
300 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
302 switch (im->gdes[gdp->vidx].gf) {
303 case GF_DEF:
304 case GF_CDEF:
305 dprintf("- vname is of type DEF or CDEF, OK\n");
306 break;
307 case GF_VDEF:
308 rrd_set_error("Cannot shift a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
309 return 1;
310 default:
311 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
312 return 1;
313 }
315 if ((gdp->shidx=rrd_parse_find_vname(line,eaten,gdp,im))>=0) {
316 switch (im->gdes[gdp->shidx].gf) {
317 case GF_DEF:
318 case GF_CDEF:
319 rrd_set_error("Offset cannot be a (C)DEF: '%s' in line '%s'\n",im->gdes[gdp->shidx].vname,line);
320 return 1;
321 case GF_VDEF:
322 dprintf("- vname is of type VDEF, OK\n");
323 break;
324 default:
325 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
326 return 1;
327 }
328 } else {
329 rrd_clear_error();
330 i=0; sscanf(&line[*eaten],"%li%n",&time_tmp,&i);
331 gdp->shval = time_tmp;
332 if (i!=(int)strlen(&line[*eaten])) {
333 rrd_set_error("Not a valid offset: %s in line %s",&line[*eaten],line);
334 return 1;
335 }
336 (*eaten)+=i;
337 dprintf("- offset is number %li\n",gdp->shval);
338 gdp->shidx = -1;
339 }
340 return 0;
341 }
343 /* XPORT:_def_or_cdef[:legend]
344 */
345 int
346 rrd_parse_xport(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
347 if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
349 switch (im->gdes[gdp->vidx].gf) {
350 case GF_DEF:
351 case GF_CDEF:
352 dprintf("- vname is of type DEF or CDEF, OK\n");
353 break;
354 case GF_VDEF:
355 rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
356 return 1;
357 default:
358 rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
359 return 1;
360 }
361 dprintf("- looking for legend in '%s'\n",&line[*eaten]);
362 if (rrd_parse_legend(line,eaten,gdp)) return 1;
363 return 0;
364 }
366 /* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
367 ** is done in one function.
368 **
369 ** Stacking PART, VRULE, HRULE or TICK is not allowed.
370 **
371 ** If a number (which is valid to enter) is more than a
372 ** certain amount of characters, it is caught as an error.
373 ** While this is arguable, so is entering fixed numbers
374 ** with more than MAX_VNAME_LEN significant digits.
375 */
376 int
377 rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
378 int i,j,k;
379 int colorfound=0;
380 char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
381 long time_tmp = 0;
382 static int spacecnt = 0;
384 if (spacecnt == 0) {
385 float one_space = gfx_get_text_width(im->canvas, 0,
386 im->text_prop[TEXT_PROP_LEGEND].font,
387 im->text_prop[TEXT_PROP_LEGEND].size,
388 im->tabwidth," ", 0) / 4.0;
389 float target_space = gfx_get_text_width(im->canvas, 0,
390 im->text_prop[TEXT_PROP_LEGEND].font,
391 im->text_prop[TEXT_PROP_LEGEND].size,
392 im->tabwidth,"oo", 0);
393 spacecnt = target_space / one_space;
394 dprintf("- spacecnt: %i onespace: %f targspace: %f\n",spacecnt,one_space,target_space);
395 }
398 dprintf("- parsing '%s'\n",&line[*eaten]);
400 /* have simpler code in the drawing section */
401 if ( gdp->gf == GF_STACK ){
402 gdp->stack=1;
403 }
405 i=scan_for_col(&line[*eaten],MAX_VNAME_LEN+9,tmpstr);
406 if (line[*eaten+i]!='\0' && line[*eaten+i]!=':') {
407 rrd_set_error("Cannot parse line '%s'",line);
408 return 1;
409 }
411 j=i; while (j>0 && tmpstr[j]!='#') j--;
413 if (j) {
414 tmpstr[j]='\0';
415 }
416 /* We now have:
417 * tmpstr[0] containing vname
418 * tmpstr[j] if j!=0 then containing color
419 * i size of vname + color
420 * j if j!=0 then size of vname
421 */
423 /* Number or vname ?
424 * If it is an existing vname, that's OK, provided that it is a
425 * valid type (need time for VRULE, not a float)
426 * Else see if it parses as a number.
427 */
428 dprintf("- examining string '%s'\n",tmpstr);
429 if ((gdp->vidx=find_var(im,tmpstr))>=0) {
430 dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
431 switch (gdp->gf) {
432 #ifdef WITH_PIECHART
433 case GF_PART:
434 #endif
435 case GF_VRULE:
436 case GF_HRULE:
437 if (im->gdes[gdp->vidx].gf != GF_VDEF) {
438 rrd_set_error("Using vname %s of wrong type in line %s\n",im->gdes[gdp->gf].vname,line);
439 return 1;
440 }
441 break;
442 default:;
443 }
444 } else {
445 dprintf("- it is not an existing vname\n");
446 switch (gdp->gf) {
447 case GF_VRULE:
448 k=0;sscanf(tmpstr,"%li%n",&time_tmp,&k);
449 gdp->xrule = time_tmp;
450 if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
451 dprintf("- found time: %li\n",gdp->xrule);
452 } else {
453 dprintf("- is is not a valid number: %li\n",gdp->xrule);
454 rrd_set_error("parameter '%s' does not represent time in line %s\n",tmpstr,line);
455 return 1;
456 }
457 default:
458 k=0;sscanf(tmpstr,"%lf%n",&gdp->yrule,&k);
459 if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
460 dprintf("- found number: %lf\n",gdp->yrule);
461 } else {
462 dprintf("- is is not a valid number: %lf\n",gdp->yrule);
463 rrd_set_error("parameter '%s' does not represent a number in line %s\n",tmpstr,line);
464 return 1;
465 }
466 }
467 }
469 if (j) {
470 j++;
471 dprintf("- examining color '%s'\n",&tmpstr[j]);
472 if (rrd_parse_color(&tmpstr[j],gdp)) {
473 rrd_set_error("Could not parse color in '%s'",&tmpstr[j]);
474 return 1;
475 }
476 dprintf("- parsed color 0x%08x\n",(unsigned int)gdp->col);
477 colorfound=1;
478 } else {
479 dprintf("- no color present in '%s'\n",tmpstr);
480 }
482 (*eaten) += i; /* after vname#color */
483 if (line[*eaten]!='\0') {
484 (*eaten)++; /* after colon */
485 }
487 if (gdp->gf == GF_TICK) {
488 dprintf("- parsing '%s'\n",&line[*eaten]);
489 dprintf("- looking for optional TICK number\n");
490 j=0;
491 sscanf(&line[*eaten],"%lf%n",&gdp->yrule,&j);
492 if (j) {
493 if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
494 rrd_set_error("Cannot parse TICK fraction '%s'",line);
495 return 1;
496 }
497 dprintf("- found number %f\n",gdp->yrule);
498 if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
499 rrd_set_error("Tick factor should be <= 1.0");
500 return 1;
501 }
502 (*eaten)+=j;
503 } else {
504 dprintf("- not found, defaulting to 0.1\n");
505 gdp->yrule=0.1;
506 }
507 if (line[*eaten] == '\0') {
508 dprintf("- done parsing line\n");
509 return 0;
510 } else { if (line[*eaten] == ':') {
511 (*eaten)++;
512 } else {
513 rrd_set_error("Can't make sense of that TICK line");
514 return 1;
515 }
516 }
517 }
519 dprintf("- parsing '%s'\n",&line[*eaten]);
521 /* Legend is next. A legend without a color is an error.
522 ** Stacking an item without having a legend is OK however
523 ** then an empty legend should be specified.
524 ** LINE:val#color:STACK means legend is string "STACK"
525 ** LINE:val#color::STACK means no legend, and do STACK
526 ** LINE:val:STACK is an error (legend but no color)
527 ** LINE:val::STACK means no legend, and do STACK
528 */
529 if (colorfound) {
530 int err=0;
531 char *linecp = strdup(line);
532 dprintf("- looking for optional legend\n");
534 dprintf("- examining '%s'\n",&line[*eaten]);
535 if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
536 int spi;
537 /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
538 * replaced by the color box later on. */
539 for (spi=0;spi<spacecnt && (*eaten) > 1;spi++){
540 linecp[--(*eaten)]=' ';
541 }
542 }
544 if (rrd_parse_legend(linecp, eaten, gdp)) err=1;
545 free(linecp);
546 if (err) return 1;
548 dprintf("- found legend '%s'\n", &gdp->legend[2]);
549 } else {
550 dprintf("- skipping empty legend\n");
551 if (line[*eaten] != '\0' && line[*eaten] != ':') {
552 rrd_set_error("Legend set but no color: %s",&line[*eaten]);
553 return 1;
554 }
555 }
556 if (line[*eaten]=='\0') {
557 dprintf("- done parsing line\n");
558 return 0;
559 }
560 (*eaten)++; /* after colon */
562 /* PART, HRULE, VRULE and TICK cannot be stacked. */
563 if ( (gdp->gf == GF_HRULE)
564 || (gdp->gf == GF_VRULE)
565 #ifdef WITH_PIECHART
566 || (gdp->gf == GF_PART)
567 #endif
568 || (gdp->gf == GF_TICK)
569 ) return 0;
571 dprintf("- parsing '%s'\n",&line[*eaten]);
572 if (line[*eaten]!='\0') {
573 dprintf("- still more, should be STACK\n");
574 j=scan_for_col(&line[*eaten],5,tmpstr);
575 if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
576 /* not 5 chars */
577 rrd_set_error("Garbage found where STACK expected");
578 return 1;
579 }
580 if (!strcmp("STACK",tmpstr)) {
581 dprintf("- found STACK\n");
582 gdp->stack=1;
583 (*eaten)+=j;
584 } else {
585 rrd_set_error("Garbage found where STACK expected");
586 return 1;
587 }
588 }
589 if (line[*eaten]=='\0') {
590 dprintf("- done parsing line\n");
591 return 0;
592 }
593 (*eaten)++;
594 dprintf("- parsing '%s'\n",&line[*eaten]);
596 return 0;
597 }
599 int
600 rrd_parse_make_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
601 char tmpstr[MAX_VNAME_LEN + 10];
602 int i=0;
604 sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr,&i);
605 if (!i) {
606 rrd_set_error("Cannot parse vname from '%s'",line);
607 return 1;
608 }
609 dprintf("- found candidate '%s'\n",tmpstr);
611 if ((gdp->vidx=find_var(im,tmpstr))>=0) {
612 rrd_set_error("Attempting to reuse '%s'",im->gdes[gdp->vidx].vname);
613 return 1;
614 }
615 strcpy(gdp->vname,tmpstr);
616 dprintf("- created vname '%s' vidx %lu\n", gdp->vname,im->gdes_c-1);
617 (*eaten)+=i;
618 return 0;
619 }
621 int
622 rrd_parse_def(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
623 int i=0;
624 char command[7]; /* step, start, end, reduce */
625 char tmpstr[256];
626 struct rrd_time_value start_tv,end_tv;
627 time_t start_tmp=0,end_tmp=0;
628 char *parsetime_error=NULL;
630 start_tv.type = end_tv.type=ABSOLUTE_TIME;
631 start_tv.offset = end_tv.offset=0;
632 localtime_r(&gdp->start, &start_tv.tm);
633 localtime_r(&gdp->end, &end_tv.tm);
635 dprintf("- parsing '%s'\n",&line[*eaten]);
636 dprintf("- from line '%s'\n",line);
638 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
639 i=scan_for_col(&line[*eaten],sizeof(gdp->rrd)-1,gdp->rrd);
640 if (line[*eaten+i]!=':') {
641 rrd_set_error("Problems reading database name");
642 return 1;
643 }
644 (*eaten)+=++i;
645 dprintf("- using file '%s'\n",gdp->rrd);
647 i=0;
648 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam,&i);
649 if (!i) {
650 rrd_set_error("Cannot parse DS in '%s'",line);
651 return 1;
652 }
653 (*eaten)+=i;
654 dprintf("- using DS '%s'\n",gdp->ds_nam);
656 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
657 gdp->cf_reduce = gdp->cf;
659 if (line[*eaten]=='\0') return 0;
661 while (1) {
662 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
663 i=0;
664 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
665 if (!i) {
666 rrd_set_error("Parse error in '%s'",line);
667 return 1;
668 }
669 (*eaten)+=i;
670 dprintf("- processing '%s'\n",command);
671 if (!strcmp("reduce",command)) {
672 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf_reduce)) return 1;
673 if (line[*eaten] != '\0')
674 (*eaten)--;
675 } else if (!strcmp("step",command)) {
676 i=0;
677 sscanf(&line[*eaten],"%lu%n",&gdp->step,&i);
678 gdp->step_orig = gdp->step;
679 (*eaten)+=i;
680 dprintf("- using step %lu\n",gdp->step);
681 } else if (!strcmp("start",command)) {
682 i=scan_for_col(&line[*eaten],255,tmpstr);
683 (*eaten)+=i;
684 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
685 rrd_set_error( "start time: %s", parsetime_error );
686 return 1;
687 }
688 dprintf("- done parsing: '%s'\n",&line[*eaten]);
689 } else if (!strcmp("end",command)) {
690 i=scan_for_col(&line[*eaten],255,tmpstr);
691 (*eaten)+=i;
692 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
693 rrd_set_error( "end time: %s", parsetime_error );
694 return 1;
695 }
696 dprintf("- done parsing: '%s'\n",&line[*eaten]);
697 } else {
698 rrd_set_error("Parse error in '%s'",line);
699 return 1;
700 }
701 if (line[*eaten]=='\0') break;
702 if (line[*eaten]!=':') {
703 dprintf("- Expected to see end of string but got '%s'\n",\
704 &line[*eaten]);
705 rrd_set_error("Parse error in '%s'",line);
706 return 1;
707 }
708 (*eaten)++;
709 }
710 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
711 /* error string is set in parsetime.c */
712 return 1;
713 }
714 if (start_tmp < 3600*24*365*10) {
715 rrd_set_error("the first entry to fetch should be "
716 "after 1980 (%ld)",start_tmp);
717 return 1;
718 }
720 if (end_tmp < start_tmp) {
721 rrd_set_error("start (%ld) should be less than end (%ld)",
722 start_tmp, end_tmp);
723 return 1;
724 }
726 gdp->start = start_tmp;
727 gdp->end = end_tmp;
728 gdp->start_orig = start_tmp;
729 gdp->end_orig = end_tmp;
731 dprintf("- start time %lu\n",gdp->start);
732 dprintf("- end time %lu\n",gdp->end);
734 return 0;
735 }
737 int
738 rrd_parse_vdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
739 char tmpstr[MAX_VNAME_LEN+1]; /* vname\0 */
740 int i=0;
742 dprintf("- parsing '%s'\n",&line[*eaten]);
743 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
745 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr,&i);
746 if (!i) {
747 rrd_set_error("Cannot parse line '%s'",line);
748 return 1;
749 }
750 if ((gdp->vidx=find_var(im,tmpstr))<0) {
751 rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
752 return 1;
753 }
754 if ( im->gdes[gdp->vidx].gf != GF_DEF
755 && im->gdes[gdp->vidx].gf != GF_CDEF) {
756 rrd_set_error("variable '%s' not DEF nor "
757 "CDEF in VDEF '%s'", tmpstr,gdp->vname);
758 return 1;
759 }
760 dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
761 (*eaten)+=i;
763 dprintf("- calling vdef_parse with param '%s'\n",&line[*eaten]);
764 vdef_parse(gdp,&line[*eaten]);
765 while (line[*eaten]!='\0'&&line[*eaten]!=':')
766 (*eaten)++;
768 return 0;
769 }
771 int
772 rrd_parse_cdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
773 dprintf("- parsing '%s'\n",&line[*eaten]);
774 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
775 if ((gdp->rpnp = rpn_parse(
776 (void *)im,
777 &line[*eaten],
778 &find_var_wrapper)
779 )==NULL) {
780 rrd_set_error("invalid rpn expression in: %s",&line[*eaten]);
781 return 1;
782 };
783 while (line[*eaten]!='\0'&&line[*eaten]!=':')
784 (*eaten)++;
785 return 0;
786 }
788 void
789 rrd_graph_script(int argc, char *argv[], image_desc_t *const im, int optno) {
790 int i;
791 /* save state for STACK backward compat function */
792 enum gf_en last_gf=GF_PRINT;
793 float last_linewidth=0.0;
795 for (i=optind+optno;i<argc;i++) {
796 graph_desc_t *gdp;
797 unsigned int eaten=0;
799 if (gdes_alloc(im)) return; /* the error string is already set */
800 gdp = &im->gdes[im->gdes_c-1];
801 #ifdef DEBUG
802 gdp->debug = 1;
803 #endif
805 if (rrd_parse_find_gf(argv[i],&eaten,gdp)) return;
807 switch (gdp->gf) {
808 case GF_SHIFT: /* vname:value */
809 if (rrd_parse_shift(argv[i],&eaten,gdp,im)) return;
810 break;
811 case GF_XPORT:
812 if (rrd_parse_xport(argv[i],&eaten,gdp,im)) return;
813 break;
814 case GF_PRINT: /* vname:CF:format -or- vname:format */
815 im->prt_c++;
816 case GF_GPRINT: /* vname:CF:format -or- vname:format */
817 if (rrd_parse_print(argv[i],&eaten,gdp,im)) return;
818 break;
819 case GF_COMMENT: /* text */
820 if (rrd_parse_legend(argv[i],&eaten,gdp)) return;
821 break;
822 #ifdef WITH_PIECHART
823 case GF_PART: /* value[#color[:legend]] */
824 #endif
825 case GF_VRULE: /* value#color[:legend] */
826 case GF_HRULE: /* value#color[:legend] */
827 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
828 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
829 case GF_TICK: /* vname#color[:num[:legend]] */
830 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
831 last_gf = gdp->gf;
832 last_linewidth = gdp->linewidth;
833 break;
834 case GF_STACK: /* vname-or-value[#color[:legend]] */
835 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
836 if (last_gf == GF_LINE || last_gf == GF_AREA){
837 gdp->gf = last_gf;
838 gdp->linewidth = last_linewidth;
839 } else {
840 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
841 &argv[i][eaten],argv[i]);
842 return;
843 }
844 break;
845 /* data acquisition */
846 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
847 if (rrd_parse_def(argv[i],&eaten,gdp,im)) return;
848 break;
849 case GF_CDEF: /* vname=rpn-expression */
850 if (rrd_parse_cdef(argv[i],&eaten,gdp,im)) return;
851 break;
852 case GF_VDEF: /* vname=rpn-expression */
853 if (rrd_parse_vdef(argv[i],&eaten,gdp,im)) return;
854 break;
855 }
856 if (gdp->debug) {
857 dprintf("used %i out of %i chars\n",eaten,strlen(argv[i]));
858 dprintf("parsed line: '%s'\n",argv[i]);
859 dprintf("remaining: '%s'\n",&argv[i][eaten]);
860 if (eaten >= strlen(argv[i]))
861 dprintf("Command finished successfully\n");
862 }
863 if (eaten < strlen(argv[i])) {
864 rrd_set_error("Garbage '%s' after command:\n%s",
865 &argv[i][eaten],argv[i]);
866 return;
867 }
868 }
869 }