int similar(char p[], char q[], short condition)
{
TREEPTR node1, node2;
double p_mean, q_mean,
p_deviation, q_deviation,
difference;
node1=get_leaf(p);
node2=get_leaf(q);
p_mean = node1->mean;
q_mean = node2->mean;
p_deviation = get_deviation(node1->mean,node1->sqr_mean);
q_deviation = get_deviation(node2->mean,node2->sqr_mean);
/* This is to avoid very little regions not to get merged because */
/* a null standar daviation */
if (p_deviation==0) p_deviation=0.5;
if (q_deviation==0) q_deviation=0.5;
difference = p_mean-q_mean;
return ( (abs(difference)<=condition*p_deviation) ||
(abs(difference)<=condition*q_deviation) );
}
TREEPTR split(short deviation, short x, short y, short level)
{
short i, j, height, width, intensity;
long size;
double mean, sqr_mean;
float dev, dev1, variance;
XPoint region_points[4];
TREEPTR new_node;
/* Allocate memory for the new defined region */
new_node = (TREEPTR)malloc(sizeof(TREE));
new_node->region = NULL;
new_node->subreg0 = NULL;
new_node->subreg1 = NULL;
new_node->subreg2 = NULL;
new_node->subreg3 = NULL;
new_node->pmerge = NULL;
new_node->included = no;
new_node->mean=0;
new_node->sqr_mean=0;
new_node->level=level;
/* Get the size of the region according to the level */
height = IMAGE_HEIGHT/pow(2,level);
width = IMAGE_WIDTH /pow(2,level);
size = height*width;
/* Initialize some variables */
mean=0; sqr_mean=0;
/*Compute the mean and the mean of the squared pixels intensity*/
for (i=x; i<x+width; i++)
for (j=y; j<y+height; j++) {
intensity=XGetPixel(theXImage_1,i,j);
XPutPixel(theXImage_2,i,j,intensity);
mean=mean+intensity;
sqr_mean=sqr_mean+pow(intensity,2);
};
mean = mean/size;
sqr_mean = sqr_mean/size;
/*Store the mean and sqr_mean values*/
new_node->mean = mean;
new_node->sqr_mean = sqr_mean;
/*Compute standard deviation of the region*/
dev = get_deviation(mean,sqr_mean);
/*Recursive splitting process*/
if (dev>deviation) {
/*The condition is not satisfied so split region*/
num_split++;
new_node->subreg0 = split(deviation,x,y,level+1);
new_node->subreg1 = split(deviation,x+(width/2),y,level+1);
new_node->subreg2 = split(deviation,x,y+(height/2),level+1);
new_node->subreg3 = split(deviation,x+(width/2),y+(height/2),level+1);
} else {
/*Condition satisfied. Insert region in the quadtree structure*/
num_reg++;
region_points[0].x=x; region_points[0].y=y;
region_points[1].x=x; region_points[1].y=y+height;
region_points[2].x=x+width; region_points[2].y=y+height;
region_points[3].x=x+width; region_points[3].y=y;
new_node->region = XPolygonRegion (region_points, 4, WindingRule);
}
return (new_node);
}
int main(int argc, char *argv[]) {
FILE *command = NULL;
char *command_line = NULL;
char *line = NULL;
char *line_bkp = NULL;
char *baseline_perfdata = NULL;
char *baseline_perfdata_aux = NULL;
char *ini_path;
char *aux = NULL;
struct metric_t *mt;
struct metric_t *aux_mt;
struct metric_t *metrics_root;
struct deviation_t *deviation;
int exit_code = OK;
int ret = 0;
int min_entries = 0;
int collected_entries = 0;
int allow_negatives = TRUE;
float tolerance = 0;
unsigned int name_last_pos = 0;
dictionary *ini;
extern char **environ;
if (argc <= 1) {
printf("Invalid check command supplied\n");
return UNKNOWN;
}
// search for hostname and servicedescription macros
line = *(environ + ret++);
while(line) {
aux = strtok(line,"=");
if (!strcmp(aux,"NAGIOS_HOSTNAME")) {
host_name = strtok(NULL,"=");
} else if (!strcmp(aux,"NAGIOS_SERVICEDESC")) {
service_description = strtok(NULL,"=");
}
ret++;
line = *(environ + ret);
}
line = NULL;
if (!host_name || !service_description) {
printf("Unable to locate NAGIOS_HOSTNAME and NAGIOS_SERVICEDESC macros\n");
return UNKNOWN;
}
asprintf(&ini_path,"%s/baseline.ini",INSTALLPATH);
ini = iniparser_load(ini_path);
if (ini == NULL) {
printf("Unable to process %s file\n",ini_path);
return UNKNOWN;
}
// i personally dont like to use 'extern' variables
// with this approach we can easily provide more backends support
aux = iniparser_getstring(ini, "database:host", NULL);
ret = (aux) ? db_set_dbserver(aux) : db_set_dbserver("localhost");
if (ret != OK)
goto memory_allocation_error;
aux = iniparser_getstring(ini, "database:user", NULL);
ret = (aux) ? db_set_dbuser(aux) : db_set_dbuser("root");
if (ret != OK)
goto memory_allocation_error;
aux = iniparser_getstring(ini, "database:password", NULL);
ret = (aux) ? db_set_dbpassword(aux) : db_set_dbpassword("");
if (ret != OK)
goto memory_allocation_error;
aux = iniparser_getstring(ini, "general:baselinealgorithm", "standard_deviation");
baseline_algorithm = STANDARDDEVIATION;
if (strstr(aux,"exponential_smoothing"))
baseline_algorithm = EXPONENTIALSMOOTH;
aux = iniparser_getstring(ini, "database:dbname", NULL);
ret = (aux) ? db_set_dbname(aux) : db_set_dbname("nada");
if (ret != OK)
goto memory_allocation_error;
db_set_max_entries( iniparser_getint(ini, "general:maxentries", MAXENTRIESTODEVIATION) );
db_set_sazonality( iniparser_getint(ini, "general:sazonality", SAZONALITY) );
min_entries = iniparser_getint(ini, "general:minentries", MINENTRIESTODEVIATION);
allow_negatives = iniparser_getboolean(ini, "general:allownegatives", TRUE);
tolerance = (float)iniparser_getint(ini, "general:tolerance", DEVIATIONTOLERANCE) / 100 + 1;
// we no longer need dictionary
iniparser_freedict(ini);
free(ini_path);
command_line = read_command_line(argc,argv);
if (command_line == NULL) {
printf("Error getting command line\n");
return UNKNOWN;
}
command = popen(command_line,"r");
if (!command) {
printf("Unable to run supplied command\n");
free(command_line);
return UNKNOWN;
}
line = malloc(MAXPLUGINOUTPUT + 1);
if (line == NULL) {
free(command_line);
pclose(command);
goto memory_allocation_error;
}
if (fgets(line, MAXPLUGINOUTPUT,command) == NULL) {
printf("Unable to read plugin output\n");
free(command_line);
pclose(command);
free(line);
return UNKNOWN;
}
if (strstr(line,"|") == NULL) {
printf("%s",line);
free(command_line);
pclose(command);
free(line);
return OK;
}
// plugin output returned value becames
// our default output return code
exit_code = WEXITSTATUS(pclose(command));
if ((line_bkp = malloc(strlen(line) + 1)) == NULL) {
free(command_line);
free(line);
goto memory_allocation_error;
}
strcpy(line_bkp,line);
line[strlen(line) - 1] = '\x0';
strtok(line_bkp,"|");
metrics_root = parse_perfdata(strtok(NULL,"|"));
if (metrics_root == NULL) {
printf("Error parsing metric data - %s\n",line);
free(command_line);
free(line_bkp);
return UNKNOWN;
}
ret = db_open_conn();
if (ret != OK) {
printf("Unable to connect to database\n");
free(command_line);
free(line);
free(line_bkp);
return UNKNOWN;
}
if ((baseline_perfdata = malloc(1)) == NULL) {
free(command_line);
free(line);
free(line_bkp);
goto memory_allocation_error;
}
*baseline_perfdata = '\x0';
for(mt=metrics_root; mt != NULL; mt=mt->next) {
deviation = get_deviation( command_line,
mt,
&collected_entries,
tolerance,
allow_negatives
);
if (collected_entries > min_entries) {
// baseline has been broken
if (mt->value < deviation->bottom || mt->value > deviation->top) {
// change return code
exit_code = CRITICAL;
}
}
/* XXX
* this certainly is not the more
* appropriate way to do it
*/
name_last_pos = strlen(mt->name) - 1;
if (mt->name[name_last_pos] == '\'') {
mt->name[name_last_pos] = '\x0';
asprintf( &baseline_perfdata_aux," %s_top'=%.3f%s;;;; %s_bottom'=%.3f%s;;;; ",
mt->name,
deviation->top,
mt->unit,
mt->name,
deviation->bottom,
mt->unit
);
} else if (mt->name[name_last_pos] == '"') {
mt->name[name_last_pos] = '\x0';
asprintf( &baseline_perfdata_aux," %s_top\"=%.3f%s;;;; %s_bottom\"=%.3f%s;;;; ",
mt->name,
deviation->top,
mt->unit,
mt->name,
deviation->bottom,
mt->unit
);
} else {
asprintf( &baseline_perfdata_aux," %s_top=%.3f%s;;;; %s_bottom=%.3f%s;;;; ",
mt->name,
deviation->top,
mt->unit,
mt->name,
deviation->bottom,
mt->unit
);
}
baseline_perfdata = realloc(baseline_perfdata, strlen(baseline_perfdata) + strlen(baseline_perfdata_aux) + 1);
strcat(baseline_perfdata,baseline_perfdata_aux);
free(baseline_perfdata_aux);
free(deviation);
}
printf( "%s %s\n", line, baseline_perfdata);
mt = metrics_root;
while(mt) {
aux_mt = mt->next;
free(mt->name);
free(mt->unit);
free(mt);
mt = aux_mt;
}
free(command_line);
free(line);
free(line_bkp);
free(baseline_perfdata);
db_close_conn();
return exit_code;
memory_allocation_error:
fprintf(stderr,"Memory allocation error\n");
return CRITICAL;
}
