/**
* collectd - src/utils_ignorelist.c
* Copyright (C) 2006 Lubos Stanek <lubek at users.sourceforge.net>
- * Copyright (C) 2008 Florian Forster <octo at verplant.org>
+ * Copyright (C) 2008 Florian Forster <octo at collectd.org>
*
* This program is free software; you can redistribute it and/
* or modify it under the terms of the GNU General Public Li-
*
* Authors:
* Lubos Stanek <lubek at users.sourceforge.net>
- * Florian Forster <octo at verplant.org>
+ * Florian Forster <octo at collectd.org>
**/
/**
* ignorelist handles plugin's list of configured collectable
**/
/**
* Usage:
- *
+ *
* Define plugin's global pointer variable of type ignorelist_t:
* ignorelist_t *myconfig_ignore;
* If you know the state of the global ignore (IgnoreSelected),
**/
#if HAVE_CONFIG_H
-# include "config.h"
+#include "config.h"
#endif
#include "common.h"
/*
* private prototypes
*/
-struct ignorelist_item_s
-{
+struct ignorelist_item_s {
#if HAVE_REGEX_H
- regex_t *rmatch; /* regular expression entry identification */
+ regex_t *rmatch; /* regular expression entry identification */
#endif
- char *smatch; /* string entry identification */
- struct ignorelist_item_s *next;
+ char *smatch; /* string entry identification */
+ struct ignorelist_item_s *next;
};
typedef struct ignorelist_item_s ignorelist_item_t;
-struct ignorelist_s
-{
- int ignore; /* ignore entries */
- ignorelist_item_t *head; /* pointer to the first entry */
+struct ignorelist_s {
+ int ignore; /* ignore entries */
+ ignorelist_item_t *head; /* pointer to the first entry */
};
/* *** *** *** ********************************************* *** *** *** */
/* *** *** *** *** *** *** private functions *** *** *** *** *** *** */
/* *** *** *** ********************************************* *** *** *** */
-static inline void ignorelist_append (ignorelist_t *il, ignorelist_item_t *item)
-{
- assert ((il != NULL) && (item != NULL));
+static inline void ignorelist_append(ignorelist_t *il,
+ ignorelist_item_t *item) {
+ assert((il != NULL) && (item != NULL));
- item->next = il->head;
- il->head = item;
+ item->next = il->head;
+ il->head = item;
}
#if HAVE_REGEX_H
-static int ignorelist_append_regex(ignorelist_t *il, const char *entry)
-{
- regex_t *re;
- ignorelist_item_t *item;
- int status;
-
- /* create buffer */
- re = malloc (sizeof (*re));
- if (re == NULL)
- {
- ERROR ("ignorelist_append_regex: malloc failed.");
- return ENOMEM;
- }
- memset (re, 0, sizeof (*re));
-
- /* compile regex */
- status = regcomp (re, entry, REG_EXTENDED);
- if (status != 0)
- {
- char errbuf[1024];
-
- (void) regerror (status, re, errbuf, sizeof (errbuf));
- ERROR ("ignorelist_append_regex: Compiling regular expression \"%s\" failed: %s", entry, errbuf);
- sfree (re);
- return status;
- }
-
- /* create new entry */
- item = malloc (sizeof (*item));
- if (item == NULL)
- {
- ERROR ("ignorelist_append_regex: malloc failed.");
- regfree (re);
- sfree (re);
- return ENOMEM;
- }
- memset (item, 0, sizeof (*item));
- item->rmatch = re;
-
- /* append new entry */
- ignorelist_append (il, item);
-
- return (0);
-} /* int ignorelist_append_regex(ignorelist_t *il, const char *entry) */
+static int ignorelist_append_regex(ignorelist_t *il, const char *re_str) {
+ regex_t *re;
+ ignorelist_item_t *entry;
+ int status;
+
+ re = calloc(1, sizeof(*re));
+ if (re == NULL) {
+ ERROR("ignorelist_append_regex: calloc failed.");
+ return ENOMEM;
+ }
+
+ status = regcomp(re, re_str, REG_EXTENDED);
+ if (status != 0) {
+ char errbuf[1024];
+ (void)regerror(status, re, errbuf, sizeof(errbuf));
+ ERROR("utils_ignorelist: regcomp failed: %s", errbuf);
+ ERROR("ignorelist_append_regex: Compiling regular expression \"%s\" "
+ "failed: %s",
+ re_str, errbuf);
+ sfree(re);
+ return status;
+ }
+
+ entry = calloc(1, sizeof(*entry));
+ if (entry == NULL) {
+ ERROR("ignorelist_append_regex: calloc failed.");
+ regfree(re);
+ sfree(re);
+ return ENOMEM;
+ }
+ entry->rmatch = re;
+
+ ignorelist_append(il, entry);
+ return 0;
+} /* int ignorelist_append_regex */
#endif
-static int ignorelist_append_string(ignorelist_t *il, const char *entry)
-{
- ignorelist_item_t *new;
+static int ignorelist_append_string(ignorelist_t *il, const char *entry) {
+ ignorelist_item_t *new;
- /* create new entry */
- if ((new = malloc(sizeof(ignorelist_item_t))) == NULL )
- {
- ERROR ("cannot allocate new entry");
- return (1);
- }
- memset (new, '\0', sizeof(ignorelist_item_t));
- new->smatch = sstrdup(entry);
+ /* create new entry */
+ if ((new = calloc(1, sizeof(*new))) == NULL) {
+ ERROR("cannot allocate new entry");
+ return 1;
+ }
+ new->smatch = sstrdup(entry);
- /* append new entry */
- ignorelist_append (il, new);
+ /* append new entry */
+ ignorelist_append(il, new);
- return (0);
+ return 0;
} /* int ignorelist_append_string(ignorelist_t *il, const char *entry) */
#if HAVE_REGEX_H
* check list for entry regex match
* return 1 if found
*/
-static int ignorelist_match_regex (ignorelist_item_t *item, const char *entry)
-{
- assert ((item != NULL) && (item->rmatch != NULL)
- && (entry != NULL) && (strlen (entry) > 0));
+static int ignorelist_match_regex(ignorelist_item_t *item, const char *entry) {
+ assert((item != NULL) && (item->rmatch != NULL) && (entry != NULL) &&
+ (strlen(entry) > 0));
- /* match regex */
- if (regexec (item->rmatch, entry, 0, NULL, 0) == 0)
- return (1);
+ /* match regex */
+ if (regexec(item->rmatch, entry, 0, NULL, 0) == 0)
+ return 1;
- return (0);
+ return 0;
} /* int ignorelist_match_regex (ignorelist_item_t *item, const char *entry) */
#endif
* check list for entry string match
* return 1 if found
*/
-static int ignorelist_match_string (ignorelist_item_t *item, const char *entry)
-{
- assert ((item != NULL) && (item->smatch != NULL)
- && (entry != NULL) && (strlen (entry) > 0));
+static int ignorelist_match_string(ignorelist_item_t *item, const char *entry) {
+ assert((item != NULL) && (item->smatch != NULL) && (entry != NULL) &&
+ (strlen(entry) > 0));
- if (strcmp (entry, item->smatch) == 0)
- return (1);
+ if (strcmp(entry, item->smatch) == 0)
+ return 1;
- return (0);
+ return 0;
} /* int ignorelist_match_string (ignorelist_item_t *item, const char *entry) */
-
/* *** *** *** ******************************************** *** *** *** */
/* *** *** *** *** *** *** public functions *** *** *** *** *** *** */
/* *** *** *** ******************************************** *** *** *** */
* create the ignorelist_t with known ignore state
* return pointer to ignorelist_t
*/
-ignorelist_t *ignorelist_create (int invert)
-{
- ignorelist_t *il;
-
- il = malloc (sizeof (*il));
- if (il == NULL)
- return NULL;
- memset (il, 0, sizeof (*il));
-
- /*
- * ->ignore == 0 => collect
- * ->ignore == 1 => ignore
- */
- il->ignore = invert ? 0 : 1;
-
- return (il);
+ignorelist_t *ignorelist_create(int invert) {
+ ignorelist_t *il;
+
+ il = calloc(1, sizeof(*il));
+ if (il == NULL)
+ return NULL;
+
+ /*
+ * ->ignore == 0 => collect
+ * ->ignore == 1 => ignore
+ */
+ il->ignore = invert ? 0 : 1;
+
+ return il;
} /* ignorelist_t *ignorelist_create (int ignore) */
/*
* free memory used by ignorelist_t
*/
-void ignorelist_free (ignorelist_t *il)
-{
- ignorelist_item_t *this;
- ignorelist_item_t *next;
+void ignorelist_free(ignorelist_t *il) {
+ ignorelist_item_t *this;
+ ignorelist_item_t *next;
- if (il == NULL)
- return;
+ if (il == NULL)
+ return;
- for (this = il->head; this != NULL; this = next)
- {
- next = this->next;
+ for (this = il->head; this != NULL; this = next) {
+ next = this->next;
#if HAVE_REGEX_H
- if (this->rmatch != NULL)
- {
- regfree (this->rmatch);
- sfree (this->rmatch);
- this->rmatch = NULL;
- }
+ if (this->rmatch != NULL) {
+ regfree(this->rmatch);
+ sfree(this->rmatch);
+ this->rmatch = NULL;
+ }
#endif
- if (this->smatch != NULL)
- {
- sfree (this->smatch);
- this->smatch = NULL;
- }
- sfree (this);
- }
-
- sfree (il);
- il = NULL;
+ if (this->smatch != NULL) {
+ sfree(this->smatch);
+ this->smatch = NULL;
+ }
+ sfree(this);
+ }
+
+ sfree(il);
} /* void ignorelist_destroy (ignorelist_t *il) */
/*
* set ignore state of the ignorelist_t
*/
-void ignorelist_set_invert (ignorelist_t *il, int invert)
-{
- if (il == NULL)
- {
- DEBUG("ignore call with ignorelist_t == NULL");
- return;
- }
-
- il->ignore = invert ? 0 : 1;
+void ignorelist_set_invert(ignorelist_t *il, int invert) {
+ if (il == NULL) {
+ DEBUG("ignore call with ignorelist_t == NULL");
+ return;
+ }
+
+ il->ignore = invert ? 0 : 1;
} /* void ignorelist_set_invert (ignorelist_t *il, int ignore) */
/*
* append entry into ignorelist_t
- * return 1 for success
+ * return 0 for success
*/
-int ignorelist_add (ignorelist_t *il, const char *entry)
-{
- size_t len;
+int ignorelist_add(ignorelist_t *il, const char *entry) {
+ size_t len;
- if (il == NULL)
- {
- DEBUG ("add called with ignorelist_t == NULL");
- return (1);
- }
+ if (il == NULL) {
+ DEBUG("add called with ignorelist_t == NULL");
+ return 1;
+ }
- len = strlen (entry);
+ len = strlen(entry);
- /* append nothing */
- if (len == 0)
- {
- DEBUG("not appending: empty entry");
- return (1);
- }
+ /* append nothing */
+ if (len == 0) {
+ DEBUG("not appending: empty entry");
+ return 1;
+ }
#if HAVE_REGEX_H
- /* regex string is enclosed in "/.../" */
- if ((len > 2) && (entry[0] == '/') && entry[len - 1] == '/')
- {
- char *copy;
- int status;
-
- /* skip leading slash */
- copy = strdup (entry + 1);
- if (copy == NULL)
- return ENOMEM;
-
- /* trim trailing slash */
- copy[strlen (copy) - 1] = 0;
-
- status = ignorelist_append_regex (il, copy);
- sfree (copy);
- return status;
- }
+ /* regex string is enclosed in "/.../" */
+ if ((len > 2) && (entry[0] == '/') && entry[len - 1] == '/') {
+ char *copy;
+ int status;
+
+ /* skip leading slash */
+ copy = strdup(entry + 1);
+ if (copy == NULL)
+ return ENOMEM;
+
+ /* trim trailing slash */
+ copy[strlen(copy) - 1] = 0;
+
+ status = ignorelist_append_regex(il, copy);
+ sfree(copy);
+ return status;
+ }
#endif
- return ignorelist_append_string(il, entry);
+ return ignorelist_append_string(il, entry);
} /* int ignorelist_add (ignorelist_t *il, const char *entry) */
/*
* check list for entry
* return 1 for ignored entry
*/
-int ignorelist_match (ignorelist_t *il, const char *entry)
-{
- ignorelist_item_t *traverse;
+int ignorelist_match(ignorelist_t *il, const char *entry) {
+ /* if no entries, collect all */
+ if ((il == NULL) || (il->head == NULL))
+ return 0;
- /* if no entries, collect all */
- if ((il == NULL) || (il->head == NULL))
- return (0);
+ if ((entry == NULL) || (strlen(entry) == 0))
+ return 0;
- if ((entry == NULL) || (strlen (entry) == 0))
- return (0);
-
- /* traverse list and check entries */
- for (traverse = il->head; traverse != NULL; traverse = traverse->next)
- {
+ /* traverse list and check entries */
+ for (ignorelist_item_t *traverse = il->head; traverse != NULL;
+ traverse = traverse->next) {
#if HAVE_REGEX_H
- if (traverse->rmatch != NULL)
- {
- if (ignorelist_match_regex (traverse, entry))
- return (il->ignore);
- }
- else
+ if (traverse->rmatch != NULL) {
+ if (ignorelist_match_regex(traverse, entry))
+ return il->ignore;
+ } else
#endif
- {
- if (ignorelist_match_string (traverse, entry))
- return (il->ignore);
- }
- } /* for traverse */
+ {
+ if (ignorelist_match_string(traverse, entry))
+ return il->ignore;
+ }
+ } /* for traverse */
- return (1 - il->ignore);
+ return 1 - il->ignore;
} /* int ignorelist_match (ignorelist_t *il, const char *entry) */
-