Imported Upstream version 1.4.5

lib/utils_base.c

@@ -0,0 +1,230 @@
+/*****************************************************************************
+ *
+ * utils_base.c
+ *
+ * Library of useful functions for plugins
+ * These functions are tested with libtap. See tests/ directory
+ *
+ * Copyright (c) 2006 Nagios Plugin Development Team
+ * License: GPL
+ *
+ * $Revision: 1.3 $
+ * $Date: 2006/10/18 12:03:10 $
+ ****************************************************************************/
+
+#include <stdarg.h>
+#include "common.h"
+#include "utils_base.h"
+
+void
+die (int result, const char *fmt, ...)
+{
+	va_list ap;
+	va_start (ap, fmt);
+	vprintf (fmt, ap);
+	va_end (ap);
+	exit (result);
+}
+
+void set_range_start (range *this, double value) {
+	this->start = value;
+	this->start_infinity = FALSE;
+}
+
+void set_range_end (range *this, double value) {
+	this->end = value;
+	this->end_infinity = FALSE;
+}
+
+range
+*parse_range_string (char *str) {
+	range *temp_range;
+	double start;
+	double end;
+	char *end_str;
+
+	temp_range = (range *) malloc(sizeof(range));
+
+	/* Set defaults */
+	temp_range->start = 0;
+	temp_range->start_infinity = FALSE;
+	temp_range->end = 0;
+	temp_range->end_infinity = TRUE;
+	temp_range->alert_on = OUTSIDE;
+
+	if (str[0] == '@') {
+		temp_range->alert_on = INSIDE;
+		str++;
+	}
+
+	end_str = index(str, ':');
+	if (end_str != NULL) {
+		if (str[0] == '~') {
+			temp_range->start_infinity = TRUE;
+		} else {
+			start = strtod(str, NULL);	/* Will stop at the ':' */
+			set_range_start(temp_range, start);
+		}
+		end_str++;		/* Move past the ':' */
+	} else {
+		end_str = str;
+	}
+	end = strtod(end_str, NULL);
+	if (strcmp(end_str, "") != 0) {
+		set_range_end(temp_range, end);
+	}
+
+	if (temp_range->start_infinity == TRUE || 
+		temp_range->end_infinity == TRUE ||
+		temp_range->start <= temp_range->end) {
+		return temp_range;
+	}
+	free(temp_range);
+	return NULL;
+}
+
+/* returns 0 if okay, otherwise 1 */
+int
+_set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_string)
+{
+	thresholds *temp_thresholds = NULL;
+
+	temp_thresholds = malloc(sizeof(temp_thresholds));
+
+	temp_thresholds->warning = NULL;
+	temp_thresholds->critical = NULL;
+
+	if (warn_string != NULL) {
+		if ((temp_thresholds->warning = parse_range_string(warn_string)) == NULL) {
+			return NP_RANGE_UNPARSEABLE;
+		}
+	}
+	if (critical_string != NULL) {
+		if ((temp_thresholds->critical = parse_range_string(critical_string)) == NULL) {
+			return NP_RANGE_UNPARSEABLE;
+		}
+	}
+
+	if (*my_thresholds > 0) {	/* Not sure why, but sometimes could be -1 */
+		/* printf("Freeing here: %d\n", *my_thresholds); */
+		free(*my_thresholds);
+	}
+	*my_thresholds = temp_thresholds;
+
+	return 0;
+}
+
+void
+set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_string)
+{
+	switch (_set_thresholds(my_thresholds, warn_string, critical_string)) {
+	case 0:
+		return;
+	case NP_RANGE_UNPARSEABLE:
+		die(STATE_UNKNOWN, _("Range format incorrect"));
+	case NP_WARN_WITHIN_CRIT:
+		die(STATE_UNKNOWN, _("Warning level is a subset of critical and will not be alerted"));
+		break;
+	}
+}
+
+void print_thresholds(const char *threshold_name, thresholds *my_threshold) {
+	printf("%s - ", threshold_name);
+	if (! my_threshold) {
+		printf("Threshold not set");
+	} else {
+		if (my_threshold->warning) {
+			printf("Warning: start=%g end=%g; ", my_threshold->warning->start, my_threshold->warning->end);
+		} else {
+			printf("Warning not set; ");
+		}
+		if (my_threshold->critical) {
+			printf("Critical: start=%g end=%g", my_threshold->critical->start, my_threshold->critical->end);
+		} else {
+			printf("Critical not set");
+		}
+	}
+	printf("\n");
+}
+
+/* Returns TRUE if alert should be raised based on the range */
+int
+check_range(double value, range *my_range)
+{
+	int false = FALSE;
+	int true = TRUE;
+	
+	if (my_range->alert_on == INSIDE) {
+		false = TRUE;
+		true = FALSE;
+	}
+
+	if (my_range->end_infinity == FALSE && my_range->start_infinity == FALSE) {
+		if ((my_range->start <= value) && (value <= my_range->end)) {
+			return false;
+		} else {
+			return true;
+		}
+	} else if (my_range->start_infinity == FALSE && my_range->end_infinity == TRUE) {
+		if (my_range->start <= value) {
+			return false;
+		} else {
+			return true;
+		}
+	} else if (my_range->start_infinity == TRUE && my_range->end_infinity == FALSE) {
+		if (value <= my_range->end) {
+			return false;
+		} else {
+			return true;
+		}
+	} else {
+		return false;
+	}
+}
+
+/* Returns status */
+int
+get_status(double value, thresholds *my_thresholds)
+{
+	if (my_thresholds->critical != NULL) {
+		if (check_range(value, my_thresholds->critical) == TRUE) {
+			return STATE_CRITICAL;
+		}
+	}
+	if (my_thresholds->warning != NULL) {
+		if (check_range(value, my_thresholds->warning) == TRUE) {
+			return STATE_WARNING;
+		}
+	}
+	return STATE_OK;
+}
+
+char *np_escaped_string (const char *string) {
+	char *data;
+	int i, j=0;
+	data = strdup(string);
+	for (i=0; data[i]; i++) {
+		if (data[i] == '\\') {
+			switch(data[++i]) {
+				case 'n':
+					data[j++] = '\n';
+					break;
+				case 'r':
+					data[j++] = '\r';
+					break;
+				case 't':
+					data[j++] = '\t';
+					break;
+				case '\\':
+					data[j++] = '\\';
+					break;
+				default:
+					data[j++] = data[i];
+			}
+		} else {
+			data[j++] = data[i];
+		}
+	}
+	data[j] = '\0';
+	return data;
+}