fix potential segfault ... if time_t is not a %li

5~

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@1140 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_graph_helper.c b/program/src/rrd_graph_helper.c
index 20198edd97a57b623aa033559383f7e993443029..404579564434b71966f4ad1284931ee04d0a4cf4 100644 (file)
--- a/program/src/rrd_graph_helper.c
+++ b/program/src/rrd_graph_helper.c
@@ -296,7 +296,7 @@ rrd_parse_print(const char *const line, unsigned int *const eaten, graph_desc_t
 int
 rrd_parse_shift(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
     int i;
-
+    long time_tmp = 0;
     if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
 
     switch (im->gdes[gdp->vidx].gf) {
@@ -327,7 +327,8 @@ rrd_parse_shift(const char *const line, unsigned int *const eaten, graph_desc_t
        }
     } else {
        rrd_clear_error();
-       i=0; sscanf(&line[*eaten],"%li%n",&gdp->shval,&i);
+       i=0; sscanf(&line[*eaten],"%li%n",&time_tmp,&i);
+    gdp->shval = time_tmp;
        if (i!=(int)strlen(&line[*eaten])) {
            rrd_set_error("Not a valid offset: %s in line %s",&line[*eaten],line);
            return 1;
@@ -377,6 +378,7 @@ rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_
     int i,j,k;
     int colorfound=0;
     char tmpstr[MAX_VNAME_LEN + 10];   /* vname#RRGGBBAA\0 */
+    long time_tmp = 0;
     static int spacecnt = 0;
 
     if (spacecnt == 0) {        
@@ -443,7 +445,8 @@ rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_
        dprintf("- it is not an existing vname\n");
        switch (gdp->gf) {
            case GF_VRULE:
-               k=0;sscanf(tmpstr,"%li%n",&gdp->xrule,&k);
+               k=0;sscanf(tmpstr,"%li%n",&time_tmp,&k);
+        gdp->xrule = time_tmp;
                if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
                    dprintf("- found time: %li\n",gdp->xrule);
                } else {
@@ -454,9 +457,9 @@ rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_
            default:
                k=0;sscanf(tmpstr,"%lf%n",&gdp->yrule,&k);
                if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
-                   dprintf("- found number: %f\n",gdp->yrule);
+                   dprintf("- found number: %lf\n",gdp->yrule);
                } else {
-                   dprintf("- is is not a valid number: %li\n",gdp->xrule);
+                   dprintf("- is is not a valid number: %lf\n",gdp->yrule);
                    rrd_set_error("parameter '%s' does not represent a number in line %s\n",tmpstr,line);
                    return 1;
                }