1 /****************************************************************************
2 * RRDtool 1.2.30 Copyright by Tobi Oetiker, 1997-2009
3 ****************************************************************************
4 * rrd_graph_helper.c commandline parser functions
5 * this code initially written by Alex van den Bogaerdt
6 ****************************************************************************/
7
8 #include "rrd_graph.h"
9
10 #define dprintf if (gdp->debug) printf
11
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 */
27
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 */
36
37 /* NOTE ON VNAMES:
38 *
39 * A vname called "123" is not to be parsed as the number 123
40 */
41
42
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 */
50
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);
64
65
66
67 int
rrd_parse_find_gf(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp)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;
71
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 }
93
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)++;
99
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 }
142
143 int
rrd_parse_legend(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp)144 rrd_parse_legend(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
145 int i;
146
147 if (line[*eaten]=='\0' || line[*eaten]==':') {
148 dprintf("- no (or: empty) legend found\n");
149 return 0;
150 }
151
152 i=scan_for_col(&line[*eaten],FMT_LEG_LEN,gdp->legend);
153
154 (*eaten)+=i;
155
156 if (line[*eaten]!='\0' && line[*eaten]!=':') {
157 rrd_set_error("Legend too long");
158 return 1;
159 } else {
160 return 0;
161 }
162 }
163
164 int
rrd_parse_color(const char * const string,graph_desc_t * const gdp)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;
167
168 /* matches the following formats:
169 ** RGB
170 ** RGBA
171 ** RRGGBB
172 ** RRGGBBAA
173 */
174
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 }
199
200 int
rrd_parse_CF(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,enum cf_en * cf)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;
204
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);
212
213 if ((int)(*cf = cf_conv(symname))==-1) {
214 rrd_set_error("Unknown CF '%s' in '%s'",symname,line);
215 return 1;
216 }
217
218 if (line[*eaten]!='\0') (*eaten)++;
219 return 0;
220 }
221
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
rrd_parse_find_vname(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
235
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);
246
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 }
257
258 /* Parsing old-style xPRINT and new-style xPRINT */
259 int
rrd_parse_print(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
266
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 }
280
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 }
293
294 /* SHIFT:_def_or_cdef:_vdef_or_number_
295 */
296 int
rrd_parse_shift(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
301
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 }
314
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 }
342
343 /* XPORT:_def_or_cdef[:legend]
344 */
345 int
rrd_parse_xport(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
348
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 }
365
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
rrd_parse_PVHLAST(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
383
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 }
396
397
398 dprintf("- parsing '%s'\n",&line[*eaten]);
399
400 /* have simpler code in the drawing section */
401 if ( gdp->gf == GF_STACK ){
402 gdp->stack=1;
403 }
404
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 }
410
411 j=i; while (j>0 && tmpstr[j]!='#') j--;
412
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 */
422
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 }
468
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 }
481
482 (*eaten) += i; /* after vname#color */
483 if (line[*eaten]!='\0') {
484 (*eaten)++; /* after colon */
485 }
486
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 }
518
519 dprintf("- parsing '%s'\n",&line[*eaten]);
520
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");
533
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 }
543
544 if (rrd_parse_legend(linecp, eaten, gdp)) err=1;
545 free(linecp);
546 if (err) return 1;
547
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 */
561
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;
570
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]);
595
596 return 0;
597 }
598
599 int
rrd_parse_make_vname(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)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;
603
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 if (line[*eaten+i] == '\0') {
610 rrd_set_error("String ends after the = sign on '%s'", line);
611 return 1;
612 }
613 dprintf("- found candidate '%s'\n",tmpstr);
614
615 if ((gdp->vidx=find_var(im,tmpstr))>=0) {
616 rrd_set_error("Attempting to reuse '%s'",im->gdes[gdp->vidx].vname);
617 return 1;
618 }
619 strcpy(gdp->vname,tmpstr);
620 dprintf("- created vname '%s' vidx %lu\n", gdp->vname,im->gdes_c-1);
621 (*eaten)+=i;
622 return 0;
623 }
624
625 int
rrd_parse_def(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)626 rrd_parse_def(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
627 int i=0;
628 char command[7]; /* step, start, end, reduce */
629 char tmpstr[256];
630 struct rrd_time_value start_tv,end_tv;
631 time_t start_tmp=0,end_tmp=0;
632 char *parsetime_error=NULL;
633
634 start_tv.type = end_tv.type=ABSOLUTE_TIME;
635 start_tv.offset = end_tv.offset=0;
636 localtime_r(&gdp->start, &start_tv.tm);
637 localtime_r(&gdp->end, &end_tv.tm);
638
639 dprintf("- parsing '%s'\n",&line[*eaten]);
640 dprintf("- from line '%s'\n",line);
641
642 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
643 i=scan_for_col(&line[*eaten],sizeof(gdp->rrd)-1,gdp->rrd);
644 if (line[*eaten+i]!=':') {
645 rrd_set_error("Problems reading database name");
646 return 1;
647 }
648 (*eaten)+=++i;
649 dprintf("- using file '%s'\n",gdp->rrd);
650
651 i=0;
652 sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam,&i);
653 if (!i) {
654 rrd_set_error("Cannot parse DS in '%s'",line);
655 return 1;
656 }
657 (*eaten)+=i;
658 dprintf("- using DS '%s'\n",gdp->ds_nam);
659
660 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
661 gdp->cf_reduce = gdp->cf;
662
663 if (line[*eaten]=='\0') return 0;
664
665 while (1) {
666 dprintf("- optional parameter follows: %s\n", &line[*eaten]);
667 i=0;
668 sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
669 if (!i) {
670 rrd_set_error("Parse error in '%s'",line);
671 return 1;
672 }
673 (*eaten)+=i;
674 dprintf("- processing '%s'\n",command);
675 if (!strcmp("reduce",command)) {
676 if (rrd_parse_CF(line,eaten,gdp,&gdp->cf_reduce)) return 1;
677 if (line[*eaten] != '\0')
678 (*eaten)--;
679 } else if (!strcmp("step",command)) {
680 i=0;
681 sscanf(&line[*eaten],"%lu%n",&gdp->step,&i);
682 gdp->step_orig = gdp->step;
683 (*eaten)+=i;
684 dprintf("- using step %lu\n",gdp->step);
685 } else if (!strcmp("start",command)) {
686 i=scan_for_col(&line[*eaten],255,tmpstr);
687 (*eaten)+=i;
688 if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
689 rrd_set_error( "start time: %s", parsetime_error );
690 return 1;
691 }
692 dprintf("- done parsing: '%s'\n",&line[*eaten]);
693 } else if (!strcmp("end",command)) {
694 i=scan_for_col(&line[*eaten],255,tmpstr);
695 (*eaten)+=i;
696 if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
697 rrd_set_error( "end time: %s", parsetime_error );
698 return 1;
699 }
700 dprintf("- done parsing: '%s'\n",&line[*eaten]);
701 } else {
702 rrd_set_error("Parse error in '%s'",line);
703 return 1;
704 }
705 if (line[*eaten]=='\0') break;
706 if (line[*eaten]!=':') {
707 dprintf("- Expected to see end of string but got '%s'\n",\
708 &line[*eaten]);
709 rrd_set_error("Parse error in '%s'",line);
710 return 1;
711 }
712 (*eaten)++;
713 }
714 if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
715 /* error string is set in parsetime.c */
716 return 1;
717 }
718 if (start_tmp < 3600*24*365*10) {
719 rrd_set_error("the first entry to fetch should be "
720 "after 1980 (%ld)",start_tmp);
721 return 1;
722 }
723
724 if (end_tmp < start_tmp) {
725 rrd_set_error("start (%ld) should be less than end (%ld)",
726 start_tmp, end_tmp);
727 return 1;
728 }
729
730 gdp->start = start_tmp;
731 gdp->end = end_tmp;
732 gdp->start_orig = start_tmp;
733 gdp->end_orig = end_tmp;
734
735 dprintf("- start time %lu\n",gdp->start);
736 dprintf("- end time %lu\n",gdp->end);
737
738 return 0;
739 }
740
741 int
rrd_parse_vdef(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)742 rrd_parse_vdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
743 char tmpstr[MAX_VNAME_LEN+1]; /* vname\0 */
744 int i=0;
745
746 dprintf("- parsing '%s'\n",&line[*eaten]);
747 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
748
749 sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr,&i);
750 if (!i) {
751 rrd_set_error("Cannot parse line '%s'",line);
752 return 1;
753 }
754 if ((gdp->vidx=find_var(im,tmpstr))<0) {
755 rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
756 return 1;
757 }
758 if ( im->gdes[gdp->vidx].gf != GF_DEF
759 && im->gdes[gdp->vidx].gf != GF_CDEF) {
760 rrd_set_error("variable '%s' not DEF nor "
761 "CDEF in VDEF '%s'", tmpstr,gdp->vname);
762 return 1;
763 }
764 dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
765 (*eaten)+=i;
766
767 dprintf("- calling vdef_parse with param '%s'\n",&line[*eaten]);
768 vdef_parse(gdp,&line[*eaten]);
769 while (line[*eaten]!='\0'&&line[*eaten]!=':')
770 (*eaten)++;
771
772 return 0;
773 }
774
775 int
rrd_parse_cdef(const char * const line,unsigned int * const eaten,graph_desc_t * const gdp,image_desc_t * const im)776 rrd_parse_cdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
777 dprintf("- parsing '%s'\n",&line[*eaten]);
778 if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
779 if ((gdp->rpnp = rpn_parse(
780 (void *)im,
781 &line[*eaten],
782 &find_var_wrapper)
783 )==NULL) {
784 rrd_set_error("invalid rpn expression in: %s",&line[*eaten]);
785 return 1;
786 };
787 while (line[*eaten]!='\0'&&line[*eaten]!=':')
788 (*eaten)++;
789 return 0;
790 }
791
792 void
rrd_graph_script(int argc,char * argv[],image_desc_t * const im,int optno)793 rrd_graph_script(int argc, char *argv[], image_desc_t *const im, int optno) {
794 int i;
795 /* save state for STACK backward compat function */
796 enum gf_en last_gf=GF_PRINT;
797 float last_linewidth=0.0;
798
799 for (i=optind+optno;i<argc;i++) {
800 graph_desc_t *gdp;
801 unsigned int eaten=0;
802
803 if (gdes_alloc(im)) return; /* the error string is already set */
804 gdp = &im->gdes[im->gdes_c-1];
805 #ifdef DEBUG
806 gdp->debug = 1;
807 #endif
808
809 if (rrd_parse_find_gf(argv[i],&eaten,gdp)) return;
810
811 switch (gdp->gf) {
812 case GF_SHIFT: /* vname:value */
813 if (rrd_parse_shift(argv[i],&eaten,gdp,im)) return;
814 break;
815 case GF_XPORT:
816 if (rrd_parse_xport(argv[i],&eaten,gdp,im)) return;
817 break;
818 case GF_PRINT: /* vname:CF:format -or- vname:format */
819 im->prt_c++;
820 case GF_GPRINT: /* vname:CF:format -or- vname:format */
821 if (rrd_parse_print(argv[i],&eaten,gdp,im)) return;
822 break;
823 case GF_COMMENT: /* text */
824 if (rrd_parse_legend(argv[i],&eaten,gdp)) return;
825 break;
826 #ifdef WITH_PIECHART
827 case GF_PART: /* value[#color[:legend]] */
828 #endif
829 case GF_VRULE: /* value#color[:legend] */
830 case GF_HRULE: /* value#color[:legend] */
831 case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
832 case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
833 case GF_TICK: /* vname#color[:num[:legend]] */
834 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
835 last_gf = gdp->gf;
836 last_linewidth = gdp->linewidth;
837 break;
838 case GF_STACK: /* vname-or-value[#color[:legend]] */
839 if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
840 if (last_gf == GF_LINE || last_gf == GF_AREA){
841 gdp->gf = last_gf;
842 gdp->linewidth = last_linewidth;
843 } else {
844 rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
845 &argv[i][eaten],argv[i]);
846 return;
847 }
848 break;
849 /* data acquisition */
850 case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
851 if (rrd_parse_def(argv[i],&eaten,gdp,im)) return;
852 break;
853 case GF_CDEF: /* vname=rpn-expression */
854 if (rrd_parse_cdef(argv[i],&eaten,gdp,im)) return;
855 break;
856 case GF_VDEF: /* vname=rpn-expression */
857 if (rrd_parse_vdef(argv[i],&eaten,gdp,im)) return;
858 break;
859 }
860 if (gdp->debug) {
861 dprintf("used %i out of %i chars\n",eaten,strlen(argv[i]));
862 dprintf("parsed line: '%s'\n",argv[i]);
863 dprintf("remaining: '%s'\n",&argv[i][eaten]);
864 if (eaten >= strlen(argv[i]))
865 dprintf("Command finished successfully\n");
866 }
867 if (eaten < strlen(argv[i])) {
868 rrd_set_error("Garbage '%s' after command:\n%s",
869 &argv[i][eaten],argv[i]);
870 return;
871 }
872 }
873 }
874