int
data_fetch( image_desc_t *im )
{
- int i,ii;
- int skip;
+ int i,ii;
+ int skip;
+
/* pull the data from the log files ... */
for (i=0;i<im->gdes_c;i++){
/* only GF_DEF elements fetch data */
skip=0;
/* do we have it already ?*/
- for (ii=0;ii<i;ii++){
+ for (ii=0;ii<i;ii++) {
if (im->gdes[ii].gf != GF_DEF)
continue;
- if((strcmp(im->gdes[i].rrd,im->gdes[ii].rrd) == 0)
- && (im->gdes[i].cf == im->gdes[ii].cf)){
- /* OK the data it is here already ...
- * we just copy the header portion */
+ if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
+ && (im->gdes[i].cf == im->gdes[ii].cf)
+ && (im->gdes[i].start == im->gdes[ii].start)
+ && (im->gdes[i].end == im->gdes[ii].end)
+ && (im->gdes[i].step == im->gdes[ii].step)) {
+ /* OK, the data is already there.
+ ** Just copy the header portion
+ */
im->gdes[i].start = im->gdes[ii].start;
im->gdes[i].end = im->gdes[ii].end;
im->gdes[i].step = im->gdes[ii].step;
output[outp] = '\0';
return inp;
}
-
/* Some surgery done on this function, it became ridiculously big.
** Things moved:
** - initializing now in rrd_graph_init()
im->end = end_tmp;
}
+/* rrd_name_or_num()
+**
+** Scans for a VDEF-variable or a number
+**
+** Returns an integer describing what was found:
+**
+** 0: error
+** 1: found an integer; it is returned in both l and d
+** 2: found a float; it is returned in d
+** 3: found a vname; its index is returned in l
+**
+** l and d are undefined unless described above
+*/
+static int
+rrd_name_or_num(image_desc_t *im, char *param, long *l, double *d)
+{
+ int i1=0,i2=0,i3=0,i4=0,i5=0,i6=0;
+ char vname[MAX_VNAME_LEN+1];
+
+ sscanf(param, "%li%n%*s%n", l,&i1,&i2);
+ sscanf(param, "%lf%n%*s%n", d,&i3,&i4);
+ sscanf(param, DEF_NAM_FMT "%n%*s%n", vname, &i5,&i6);
+
+ if ( (i1) && (!i2) ) return 1;
+ if ( (i3) && (!i4) ) return 2;
+ if ( (i5) && (!i6) ) {
+ if ((*l = find_var(im,vname))!=-1) return 3;
+ }
+ return 0;
+}
+
+/* rrd_vname_color()
+**
+** Parses "[<vname|number>][#color]" where at least one
+** of the optional strings must exist.
+**
+** Returns an integer describing what was found.
+** If the result is 0, the rrd_error string may be set.
+**
+** ...CVVVV
+** ---------:-----------------------------------
+** 00000000 : error
+** ....0000 : a value/variable was not found
+** ....0001 : an integer number was found, returned in both l and d
+** ....0010 : a floating point number was found, returned in d
+** ....0011 : reserved for future values
+** ....01xx : reserved for future values
+** ....1000 : an existing DEF vname was found, idx returned in l
+** ....1001 : an existing CDEF vname was found, idx returned in l
+** ....1010 : an existing VDEF vname was found, idx returned in l
+** ....1011 : reserved for future variables
+** ....11xx : reserved for future variables
+** ...0.... : a color was not found, returned in color
+** ...1.... : a color was found, returned in color
+*/
+static int
+rrd_vname_color(image_desc_t *im, char * param,
+ long *l,
+ double *d,
+ gfx_color_t *color)
+{
+ int result=0,i=0;
+
+ if (param[0]!='#') { /* vname or num present or empty string */
+ char *s,*c=param;
+ while ((*c!='\0')&&(*c!='#')) c++,i++;
+ if (*c!='\0') {
+ s=malloc(i+1);
+ if (s==NULL) {
+ rrd_set_error("Out of memory in function rrd_vname_color");
+ return 0;
+ }
+ strncpy(s,param,i);
+ s[i]='\0';
+ result=rrd_name_or_num(im, s, l, d);
+ if (!result) {
+ rrd_set_error("Use of uninitialized vname %s",s);
+ free(s);
+ }
+ } else {
+ result=rrd_name_or_num(im, param, l, d);
+ if (!result) {
+ rrd_set_error("Use of uninitialized vname %s",param);
+ }
+ }
+ switch (result) {
+ case 0: return 0; /* error set above */
+ case 1:
+ case 2: break;
+ case 3:
+ switch (im->gdes[*l].gf) {
+ case GF_DEF: result=0x08;break;
+ case GF_CDEF: result=0x09;break;
+ case GF_VDEF: result=0x0A;break;
+ default:
+ rrd_set_error("Unexpected GF result from function "
+ "rrd_name_or_num() called from rrd_vname_color");
+ return 0;
+ }
+ break;
+ default:
+ rrd_set_error("Unexpected result from function "
+ "rrd_name_or_num() called from rrd_vname_color");
+ return 0;
+ }
+ }
+ /* Parse color, if any. */
+ if (param[i] == '\0') return result;
+ else {
+ unsigned int r=0,g=0,b=0,a=0xFF;
+ int i1=0,i2=0;
+ sscanf(¶m[i], "#%02x%02x%02x%n%02x%n",
+ &r,&g,&b,&i1,&a,&i2);
+ if (!i1) {
+ rrd_set_error("Unparsable color %s",¶m[i]);
+ return 0;
+ }
+ if (i2) i1=i2;
+ i2=0;
+ sscanf(¶m[i+i1],"%*s%n",&i2);
+ if (i2) {
+ rrd_set_error("Garbage after color %s",param[i]);
+ return 0;
+ }
+ *color=r<<24|g<<16|b<<8|a;
+ return result|0x10;
+ }
+}
+
+/* rrd_find_function()
+**
+** Checks if the parameter is a valid function and
+** if so, returns it in the graph description pointer.
+**
+** The return value is a boolean; true if found
+*/
+static int
+rrd_find_function(char *param, graph_desc_t *gdp)
+{
+ size_t i1=0,i2=0;
+ char funcname[11];
+
+ sscanf(param,"%10[A-Z]%n%*1[1-3]%n",funcname,(int *)&i1,(int *)&i2);
+ gdp->gf=gf_conv(funcname);
+ if ((int)gdp->gf == -1) {
+ rrd_set_error("'%s' is not a valid function name",funcname);
+ return 0;
+ }
+ if (gdp->gf==GF_LINE) {
+ if (i2) {
+ gdp->linewidth=param[i1]-'0';
+ } else {
+ rrd_set_error("LINE should have a width");
+ return 0;
+ }
+ } else {
+ if (i2) {
+ rrd_set_error("Only LINE should have a width: %s",param);
+ return 0;
+ } else {
+ i2=i1;
+ }
+ }
+ if (strlen(param) != i2) {
+ rrd_set_error("Garbage after function name: %s",param);
+ return 0;
+ }
+ return 1;
+}
+/* rrd_split_line()
+**
+** Takes a string as input; splits this line into multiple
+** parameters on each ":" boundary.
+**
+** If this function returns successful, the caller will have
+** to free() the allocated memory for param.
+**
+** The input string is destroyed, its memory is used by the
+** output array.
+*/
+static int
+rrd_split_line(char *line,char ***param)
+{
+ int i=0,n=0;
+ char *c=line;
+
+ /* scan the amount of colons in the line. We need
+ ** at most this amount+1 pointers for the array. If
+ ** any colons are escaped we waste some space.
+ */
+ if (*c!='\0') n=1;
+ while (*c != '\0')
+ if (*c++ == ':') n++;
+
+ if (n==0) {
+ rrd_set_error("No line to split. rrd_split_line was given the empty string.");
+ return -1;
+ }
+
+ /* Allocate memory for an array of n char pointers */
+ *param=calloc(n,sizeof(char *));
+ if (*param==NULL) {
+ rrd_set_error("Memory allocation failed inside rrd_split_line");
+ return -1;
+ }
+
+ /* split the line and fill the array */
+ c = line;
+ i=0;
+ (*param)[i] = c;
+ while (*c != '\0') {
+ switch (*c) {
+ case '\\':
+ c++;
+ if (*c=='\0') {
+ free(*param);
+ rrd_set_error("Lone backslash found inside rrd_split_line");
+ return -1;
+ }
+ c++;
+ break;
+ case ':':
+ *c = '\0';
+ c++;
+ i++;
+ (*param)[i] = c;
+ break;
+ default:
+ c++;
+ }
+ }
+ i++; /* i separators means i+1 parameters */
+
+ return i;
+}
void
rrd_graph_script(int argc, char *argv[], image_desc_t *im)
{
int i;
char symname[100];
int linepass = 0; /* stack must follow LINE*, AREA or STACK */
+ char ** param;
+ int paramcnt,paramused;
for (i=optind+1;i<argc;i++) {
int argstart=0;
int strstart=0;
graph_desc_t *gdp;
char *line;
- char funcname[10],vname[MAX_VNAME_LEN+1],sep[1];
- double d;
- double linewidth;
- int j,k,l,m;
+ char tmpline[256];
+ char vname[MAX_VNAME_LEN+1],sep[1];
+/* double d; */
+ int j,k,l/*,m*/;
- /* Each command is one element from *argv[], we call this "line".
+ /* Each command is one element from *argv[]. This command is
+ ** split at every unescaped colon.
**
** Each command defines the most current gdes inside struct im.
** In stead of typing "im->gdes[im->gdes_c-1]" we use "gdp".
*/
gdes_alloc(im);
gdp=&im->gdes[im->gdes_c-1];
- line=argv[i];
+ strcpy(tmpline,argv[i]);
+ line=tmpline;
+ if ((paramcnt=rrd_split_line(argv[i],¶m))==-1) return;
+ paramused=0;
+
+#ifdef DEBUG
+ printf("DEBUG: after splitting line:\n");
+ for (j=0;j<paramcnt;j++)
+ printf("DEBUG: %3i: %s\n",j,param[j]);
+#endif
+
+ if (!rrd_find_function(param[paramused],gdp)) {
+ im_free(im);
+ free(param);
+ return;
+ }
+ paramused++;
/* function:newvname=string[:ds-name:CF] for xDEF
** function:vname[#color[:string]] for LINEx,AREA,STACK
** function:vname:CF:string for xPRINT
** function:string for COMMENT
*/
- argstart=0;
- sscanf(line, "%10[A-Z0-9]:%n", funcname,&argstart);
- if (argstart==0) {
- rrd_set_error("Cannot parse function in line: %s",line);
- im_free(im);
- return;
- }
- if(sscanf(funcname,"LINE%lf",&linewidth)){
- im->gdes[im->gdes_c-1].gf = GF_LINE;
- im->gdes[im->gdes_c-1].linewidth = linewidth;
- } else {
- if ((gdp->gf=gf_conv(funcname))==-1) {
- rrd_set_error("'%s' is not a valid function name",funcname);
- im_free(im);
- return;
- }
- }
+/*TEMP*/argstart=strlen(param[paramused-1])+1;
- /* If the error string is set, we exit at the end of the switch */
+ /* If anything fails just use rrd_set_error() and break from the
+ ** switch. Just after the switch we call rrd_test_error() and
+ ** clean up if it is set.
+ */
switch (gdp->gf) {
case GF_XPORT:
break;
case GF_COMMENT:
- if (rrd_graph_legend(gdp,&line[argstart])==0)
- rrd_set_error("Cannot parse comment in line: %s",line);
+ if (paramcnt<2) {
+ rrd_set_error("Not enough parameters for %s",param[0]);
+ break;
+ }
+ if (strlen(param[1])>FMT_LEG_LEN) {
+ rrd_set_error("Comment too long: %s:%s",param[0],param[1]);
+ break;
+ }
+ strcpy(gdp->legend,param[1]);
+ paramused++;
break;
case GF_PART:
case GF_VRULE:
case GF_HRULE:
- j=k=l=m=0;
- sscanf(&line[argstart], "%lf%n#%n", &d, &j, &k);
- sscanf(&line[argstart], DEF_NAM_FMT "%n#%n", vname, &l, &m);
- if (k+m==0) {
- rrd_set_error("Cannot parse name or num in line: %s",line);
+ if (paramcnt<2) {
+ rrd_set_error("No name or number in %s",param[0]);
break;
}
- if (j!=0) {
- gdp->xrule=d;
- gdp->yrule=d;
- argstart+=j;
- } else if (!rrd_graph_check_vname(im,vname,line)) {
- gdp->xrule=0;
- gdp->yrule=DNAN;
- argstart+=l;
- } else break; /* exit due to wrong vname */
- if ((j=rrd_graph_color(im,&line[argstart],line,0))==0) break;
- argstart+=j;
- if (strlen(&line[argstart])!=0) {
- if (rrd_graph_legend(gdp,&line[++argstart])==0)
- rrd_set_error("Cannot parse comment in line: %s",line);
+ j=rrd_vname_color(im,param[1],
+ &gdp->xrule,&gdp->yrule,&gdp->col);
+ paramused++;
+ if (!j) break; /* error string set by function */
+ switch (j&0x0F) {
+ case 0x00:
+ rrd_set_error("Cannot parse name nor number "
+ "in %s:%s",param[0],param[1]);
+ break;
+ case 0x08:
+ case 0x09:
+ rrd_set_error("Cannot use DEF or CDEF based "
+ "variable in %s:%s",param[0],param[1]);
+ break;
+ case 0x0A:
+ gdp->vidx=gdp->xrule;
+ gdp->xrule=0;
+ gdp->yrule=DNAN;
+ break;
+ case 0x01:
+ case 0x02:
+ break;
+ default:
+ rrd_set_error("Unexpected result while parsing "
+ "%s:%s, program error",param[0],param[1]);
+ }
+ if (rrd_test_error()) break;
+
+ if (paramcnt>paramused) {
+ if (strlen(param[paramused])>FMT_LEG_LEN) {
+ rrd_set_error("Comment too long: %s:%s",
+ param[0],param[1]);
+ break;
+ }
+ strcpy(gdp->legend,param[paramused]);
+ paramused++;
}
break;
case GF_STACK:
case GF_VDEF:
case GF_CDEF:
j=0;
- sscanf(&line[argstart], DEF_NAM_FMT "=%n",gdp->vname,&j);
+ if (paramcnt<2) {
+ rrd_set_error("Nothing following %s",param[0]);
+ break;
+ }
+ sscanf(param[1], DEF_NAM_FMT "=%n",gdp->vname,&j);
if (j==0) {
- rrd_set_error("Could not parse line: %s",line);
+ rrd_set_error("Could not parse %s:%s",param[0],param[1]);
break;
}
if (find_var(im,gdp->vname)!=-1) {
- rrd_set_error("Variable '%s' in line '%s' already in use\n",
- gdp->vname,line);
+ rrd_set_error("Variable '%s' in %s:%s' already in use\n",
+ gdp->vname,param[0],param[1]);
break;
}
+ paramused++;
argstart+=j;
switch (gdp->gf) {
case GF_DEF:
- argstart+=scan_for_col(&line[argstart],MAXPATH,gdp->rrd);
+ if (strlen(¶m[1][j])>MAXPATH) {
+ rrd_set_error("Path too long: %s:%s",param[0],param[1]);
+ break;
+ }
+ strcpy(gdp->rrd,¶m[1][j]);
+
+ if (paramcnt<3) {
+ rrd_set_error("No DS for %s:%s",param[0],param[1]);
+ break;
+ }
+ j=k=0;
+ sscanf(param[2],DS_NAM_FMT "%n%*s%n",gdp->ds_nam,&j,&k);
+ if ((j==0)||(k!=0)) {
+ rrd_set_error("Cannot parse DS in %s:%s:%s",
+ param[0],param[1],param[2]);
+ break;
+ }
+ paramused++;
+ if (paramcnt<4) {
+ rrd_set_error("No CF for %s:%s:%s",
+ param[0],param[1],param[2]);
+ break;
+ }
j=k=0;
- sscanf(&line[argstart],
- ":" DS_NAM_FMT ":" CF_NAM_FMT "%n%*s%n",
- gdp->ds_nam, symname, &j, &k);
+ sscanf(param[3],CF_NAM_FMT "%n%*s%n",symname,&j,&k);
if ((j==0)||(k!=0)) {
- rrd_set_error("Cannot parse DS or CF in '%s'",line);
+ rrd_set_error("Cannot parse CF in %s:%s:%s:%s",
+ param[0],param[1],param[2],param[3]);
break;
}
- rrd_graph_check_CF(im,symname,line);
+ if ((gdp->cf = cf_conv(symname))==-1) {
+ rrd_set_error("Unknown CF '%s' in %s:%s:%s:%s",
+ param[0],param[1],param[2],param[3]);
+ break;
+ }
+ paramused++;
+ if (paramcnt>paramused) {
+ k=0;l=0;
+ sscanf(param[4],
+ "step=%lu%n%*s%n",
+ &gdp->step,&k,&l);
+ if ((k==0)||(l!=0)) {
+ rrd_set_error("Cannot parse step in "
+ "%s:%s:%s:%s:%s",
+ param[0],param[1],param[2],param[3],param[4]);
+ break;
+ }
+ paramused++;
+ }
break;
case GF_VDEF:
j=0;
return;
}
}
+
int
rrd_graph_check_vname(image_desc_t *im, char *varname, char *err)
{
projects / rrdtool.git / blobdiff