/**
* collectd - src/configfile.c
- * Copyright (C) 2005-2008 Florian octo Forster
+ * Copyright (C) 2005-2009 Florian octo Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Florian octo Forster <octo at verplant.org>
+ * Sebastian tokkee Harl <sh at tokkee.org>
**/
#include "collectd.h"
#include "configfile.h"
#include "types_list.h"
#include "utils_threshold.h"
+#include "filter_chain.h"
+
+#if HAVE_WORDEXP_H
+# include <wordexp.h>
+#endif /* HAVE_WORDEXP_H */
#define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
{"Hostname", NULL, NULL},
{"FQDNLookup", NULL, "false"},
{"Interval", NULL, "10"},
- {"ReadThreads", NULL, "5"}
+ {"ReadThreads", NULL, "5"},
+ {"PreCacheChain", NULL, "PreCache"},
+ {"PostCacheChain", NULL, "PostCache"}
};
static int cf_global_options_num = STATIC_ARRAY_LEN (cf_global_options);
for (i = 0; i < cf_cb->keys_num; i++)
{
- if (strcasecmp (cf_cb->keys[i], key) == 0)
+ if ((cf_cb->keys[i] != NULL)
+ && (strcasecmp (cf_cb->keys[i], key) == 0))
{
ret = (*cf_cb->callback) (key, value);
break;
else if (ci->values[0].type == OCONFIG_TYPE_NUMBER)
{
char tmp[128];
- snprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
- tmp[127] = '\0';
+ ssnprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
return (global_option_set (ci->key, tmp));
}
else if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
cf_default_typesdb = 0;
- if (ci->values_num < 1)
+ if (ci->values_num < 1) {
+ ERROR ("configfile: `TypesDB' needs at least one argument.");
return (-1);
+ }
for (i = 0; i < ci->values_num; ++i)
{
- if (OCONFIG_TYPE_STRING != ci->values[i].type)
+ if (OCONFIG_TYPE_STRING != ci->values[i].type) {
+ WARNING ("configfile: TypesDB: Skipping %i. argument which "
+ "is not a string.", i + 1);
continue;
+ }
read_types_list (ci->values[i].value.string);
}
int status = -1;
if (ci->values[i].type == OCONFIG_TYPE_STRING)
- status = snprintf (buffer_ptr, buffer_free, " %s",
+ status = ssnprintf (buffer_ptr, buffer_free, " %s",
ci->values[i].value.string);
else if (ci->values[i].type == OCONFIG_TYPE_NUMBER)
- status = snprintf (buffer_ptr, buffer_free, " %lf",
+ status = ssnprintf (buffer_ptr, buffer_free, " %lf",
ci->values[i].value.number);
else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
- status = snprintf (buffer_ptr, buffer_free, " %s",
+ status = ssnprintf (buffer_ptr, buffer_free, " %s",
ci->values[i].value.boolean
? "true" : "false");
buffer_ptr = buffer + 1;
return (cf_dispatch (plugin, ci->key, buffer_ptr));
-} /* int plugin_conf_dispatch */
+} /* int dispatch_value_plugin */
static int dispatch_value (const oconfig_item_t *ci)
{
if (ci->children[i].children == NULL)
dispatch_value_plugin (name, ci->children + i);
else
- {DEBUG ("No nested config blocks allow for this plugin.");}
+ {DEBUG ("No nested config blocks allowed for this plugin.");}
}
return (0);
return (dispatch_block_plugin (ci));
else if (strcasecmp (ci->key, "Threshold") == 0)
return (ut_config (ci));
+ else if (strcasecmp (ci->key, "Chain") == 0)
+ return (fc_configure (ci));
return (0);
}
+static int cf_ci_replace_child (oconfig_item_t *dst, oconfig_item_t *src,
+ int offset)
+{
+ oconfig_item_t *temp;
+ int i;
+
+ assert (offset >= 0);
+ assert (dst->children_num > offset);
+
+ /* Free the memory used by the replaced child. Usually that's the
+ * `Include "blah"' statement. */
+ temp = dst->children + offset;
+ for (i = 0; i < temp->values_num; i++)
+ {
+ if (temp->values[i].type == OCONFIG_TYPE_STRING)
+ {
+ sfree (temp->values[i].value.string);
+ }
+ }
+ sfree (temp->values);
+ temp = NULL;
+
+ /* If (src->children_num == 0) the array size is decreased. If offset
+ * is _not_ the last element, (offset < (src->children_num - 1)), then
+ * we need to move the trailing elements before resizing the array. */
+ if ((src->children_num == 0) && (offset < (src->children_num - 1)))
+ {
+ int nmemb = src->children_num - (offset + 1);
+ memmove (src->children + offset, src->children + offset + 1,
+ sizeof (oconfig_item_t) * nmemb);
+ }
+
+ /* Resize the memory containing the children to be big enough to hold
+ * all children. */
+ temp = (oconfig_item_t *) realloc (dst->children,
+ sizeof (oconfig_item_t)
+ * (dst->children_num + src->children_num - 1));
+ if (temp == NULL)
+ {
+ ERROR ("configfile: realloc failed.");
+ return (-1);
+ }
+ dst->children = temp;
+
+ /* If there are children behind the include statement, and they have
+ * not yet been moved because (src->children_num == 0), then move them
+ * to the end of the list, so that the new children have room before
+ * them. */
+ if ((src->children_num > 0)
+ && ((dst->children_num - (offset + 1)) > 0))
+ {
+ int nmemb = dst->children_num - (offset + 1);
+ int old_offset = offset + 1;
+ int new_offset = offset + src->children_num;
+
+ memmove (dst->children + new_offset,
+ dst->children + old_offset,
+ sizeof (oconfig_item_t) * nmemb);
+ }
+
+ /* Last but not least: If there are new childrem, copy them to the
+ * memory reserved for them. */
+ if (src->children_num > 0)
+ {
+ memcpy (dst->children + offset,
+ src->children,
+ sizeof (oconfig_item_t) * src->children_num);
+ }
+
+ /* Update the number of children. */
+ dst->children_num += (src->children_num - 1);
+
+ return (0);
+} /* int cf_ci_replace_child */
+
+static int cf_ci_append_children (oconfig_item_t *dst, oconfig_item_t *src)
+{
+ oconfig_item_t *temp;
+
+ if ((src == NULL) || (src->children_num == 0))
+ return (0);
+
+ temp = (oconfig_item_t *) realloc (dst->children,
+ sizeof (oconfig_item_t)
+ * (dst->children_num + src->children_num));
+ if (temp == NULL)
+ {
+ ERROR ("configfile: realloc failed.");
+ return (-1);
+ }
+ dst->children = temp;
+
+ memcpy (dst->children + dst->children_num,
+ src->children,
+ sizeof (oconfig_item_t)
+ * src->children_num);
+ dst->children_num += src->children_num;
+
+ return (0);
+} /* int cf_ci_append_children */
+
#define CF_MAX_DEPTH 8
-static oconfig_item_t *cf_read_file (const char *file, int depth);
+static oconfig_item_t *cf_read_generic (const char *path, int depth);
static int cf_include_all (oconfig_item_t *root, int depth)
{
continue;
}
- new = cf_read_file (old->values[0].value.string, depth + 1);
+ new = cf_read_generic (old->values[0].value.string, depth + 1);
if (new == NULL)
continue;
- /* There are more children now. We need to expand
- * root->children. */
- if (new->children_num > 1)
+ /* Now replace the i'th child in `root' with `new'. */
+ cf_ci_replace_child (root, new, i);
+
+ sfree (new->values);
+ sfree (new);
+ } /* for (i = 0; i < root->children_num; i++) */
+
+ return (0);
+} /* int cf_include_all */
+
+static oconfig_item_t *cf_read_file (const char *file, int depth)
+{
+ oconfig_item_t *root;
+
+ assert (depth < CF_MAX_DEPTH);
+
+ root = oconfig_parse_file (file);
+ if (root == NULL)
+ {
+ ERROR ("configfile: Cannot read file `%s'.", file);
+ return (NULL);
+ }
+
+ cf_include_all (root, depth);
+
+ return (root);
+} /* oconfig_item_t *cf_read_file */
+
+static int cf_compare_string (const void *p1, const void *p2)
+{
+ return strcmp (*(const char **) p1, *(const char **) p2);
+}
+
+static oconfig_item_t *cf_read_dir (const char *dir, int depth)
+{
+ oconfig_item_t *root = NULL;
+ DIR *dh;
+ struct dirent *de;
+ char **filenames = NULL;
+ int filenames_num = 0;
+ int status;
+ int i;
+
+ assert (depth < CF_MAX_DEPTH);
+
+ dh = opendir (dir);
+ if (dh == NULL)
+ {
+ char errbuf[1024];
+ ERROR ("configfile: opendir failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (NULL);
+ }
+
+ root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
+ if (root == NULL)
+ {
+ ERROR ("configfile: malloc failed.");
+ return (NULL);
+ }
+ memset (root, '\0', sizeof (oconfig_item_t));
+
+ while ((de = readdir (dh)) != NULL)
+ {
+ char name[1024];
+ char **tmp;
+
+ if ((de->d_name[0] == '.') || (de->d_name[0] == '\0'))
+ continue;
+
+ status = ssnprintf (name, sizeof (name), "%s/%s",
+ dir, de->d_name);
+ if ((status < 0) || ((size_t) status >= sizeof (name)))
{
- oconfig_item_t *temp;
-
- DEBUG ("configfile: Resizing root-children from %i to %i elements.",
- root->children_num,
- root->children_num + new->children_num - 1);
-
- temp = (oconfig_item_t *) realloc (root->children,
- sizeof (oconfig_item_t)
- * (root->children_num + new->children_num - 1));
- if (temp == NULL)
- {
- ERROR ("configfile: realloc failed.");
- oconfig_free (new);
- continue;
- }
- root->children = temp;
+ ERROR ("configfile: Not including `%s/%s' because its"
+ " name is too long.",
+ dir, de->d_name);
+ for (i = 0; i < filenames_num; ++i)
+ free (filenames[i]);
+ free (filenames);
+ free (root);
+ return (NULL);
}
- /* Clean up the old include directive while we still have a
- * valid pointer */
- DEBUG ("configfile: Cleaning up `old'");
- /* sfree (old->values[0].value.string); */
- sfree (old->values);
-
- /* If there are trailing children and the number of children
- * changes, we need to move the trailing ones either one to the
- * front or (new->num - 1) to the back */
- if (((root->children_num - i) > 1)
- && (new->children_num != 1))
- {
- DEBUG ("configfile: Moving trailing children.");
- memmove (root->children + i + new->children_num,
- root->children + i + 1,
- sizeof (oconfig_item_t)
- * (root->children_num - (i + 1)));
+ ++filenames_num;
+ tmp = (char **) realloc (filenames,
+ filenames_num * sizeof (*filenames));
+ if (tmp == NULL) {
+ ERROR ("configfile: realloc failed.");
+ for (i = 0; i < filenames_num - 1; ++i)
+ free (filenames[i]);
+ free (filenames);
+ free (root);
+ return (NULL);
}
+ filenames = tmp;
- /* Now copy the new children to where the include statement was */
- if (new->children_num > 0)
- {
- DEBUG ("configfile: Copying new children.");
- memcpy (root->children + i,
- new->children,
- sizeof (oconfig_item_t)
- * new->children_num);
+ filenames[filenames_num - 1] = sstrdup (name);
+ }
+
+ qsort ((void *) filenames, filenames_num, sizeof (*filenames),
+ cf_compare_string);
+
+ for (i = 0; i < filenames_num; ++i)
+ {
+ oconfig_item_t *temp;
+ char *name = filenames[i];
+
+ temp = cf_read_generic (name, depth);
+ if (temp == NULL) {
+ int j;
+ for (j = i; j < filenames_num; ++j)
+ free (filenames[j]);
+ free (filenames);
+ oconfig_free (root);
+ return (NULL);
}
- /* Adjust the number of children and the position in the list. */
- root->children_num = root->children_num + new->children_num - 1;
- i = i + new->children_num - 1;
+ cf_ci_append_children (root, temp);
+ sfree (temp->children);
+ sfree (temp);
- /* Clean up the `new' struct. We set `new->children' to NULL so
- * the stuff we've just copied pointers to isn't freed by
- * `oconfig_free' */
- DEBUG ("configfile: Cleaning up `new'");
- sfree (new->values); /* should be NULL anyway */
- sfree (new);
- new = NULL;
- } /* for (i = 0; i < root->children_num; i++) */
+ free (name);
+ }
- return (0);
-} /* int cf_include_all */
+ free(filenames);
+ return (root);
+} /* oconfig_item_t *cf_read_dir */
-static oconfig_item_t *cf_read_file (const char *file, int depth)
+/*
+ * cf_read_generic
+ *
+ * Path is stat'ed and either cf_read_file or cf_read_dir is called
+ * accordingly.
+ *
+ * There are two versions of this function: If `wordexp' exists shell wildcards
+ * will be expanded and the function will include all matches found. If
+ * `wordexp' (or, more precisely, it's header file) is not available the
+ * simpler function is used which does not do any such expansion.
+ */
+#if HAVE_WORDEXP_H
+static oconfig_item_t *cf_read_generic (const char *path, int depth)
{
- oconfig_item_t *root;
+ oconfig_item_t *root = NULL;
+ int status;
+ const char *path_ptr;
+ wordexp_t we;
+ size_t i;
if (depth >= CF_MAX_DEPTH)
{
- ERROR ("configfile: Not including `%s' because the maximum nesting depth has been reached.",
- file);
+ ERROR ("configfile: Not including `%s' because the maximum "
+ "nesting depth has been reached.", path);
return (NULL);
}
- root = oconfig_parse_file (file);
+ status = wordexp (path, &we, WRDE_NOCMD);
+ if (status != 0)
+ {
+ ERROR ("configfile: wordexp (%s) failed.", path);
+ return (NULL);
+ }
+
+ root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
if (root == NULL)
{
- ERROR ("configfile: Cannot read file `%s'.", file);
+ ERROR ("configfile: malloc failed.");
return (NULL);
}
+ memset (root, '\0', sizeof (oconfig_item_t));
- cf_include_all (root, depth);
+ /* wordexp() might return a sorted list already. That's not
+ * documented though, so let's make sure we get what we want. */
+ qsort ((void *) we.we_wordv, we.we_wordc, sizeof (*we.we_wordv),
+ cf_compare_string);
+
+ for (i = 0; i < we.we_wordc; i++)
+ {
+ oconfig_item_t *temp;
+ struct stat statbuf;
+
+ path_ptr = we.we_wordv[i];
+
+ status = stat (path_ptr, &statbuf);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("configfile: stat (%s) failed: %s",
+ path_ptr,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ oconfig_free (root);
+ return (NULL);
+ }
+
+ if (S_ISREG (statbuf.st_mode))
+ temp = cf_read_file (path_ptr, depth);
+ else if (S_ISDIR (statbuf.st_mode))
+ temp = cf_read_dir (path_ptr, depth);
+ else
+ {
+ ERROR ("configfile: %s is neither a file nor a "
+ "directory.", path);
+ continue;
+ }
+
+ if (temp == NULL) {
+ oconfig_free (root);
+ return (NULL);
+ }
+
+ cf_ci_append_children (root, temp);
+ sfree (temp->children);
+ sfree (temp);
+ }
+
+ wordfree (&we);
return (root);
-} /* oconfig_item_t *cf_read_file */
+} /* oconfig_item_t *cf_read_generic */
+/* #endif HAVE_WORDEXP_H */
+
+#else /* if !HAVE_WORDEXP_H */
+static oconfig_item_t *cf_read_generic (const char *path, int depth)
+{
+ struct stat statbuf;
+ int status;
+
+ if (depth >= CF_MAX_DEPTH)
+ {
+ ERROR ("configfile: Not including `%s' because the maximum "
+ "nesting depth has been reached.", path);
+ return (NULL);
+ }
+
+ status = stat (path, &statbuf);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("configfile: stat (%s) failed: %s",
+ path,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (NULL);
+ }
+
+ if (S_ISREG (statbuf.st_mode))
+ return (cf_read_file (path, depth));
+ else if (S_ISDIR (statbuf.st_mode))
+ return (cf_read_dir (path, depth));
+
+ ERROR ("configfile: %s is neither a file nor a directory.", path);
+ return (NULL);
+} /* oconfig_item_t *cf_read_generic */
+#endif /* !HAVE_WORDEXP_H */
/*
* Public functions
oconfig_item_t *conf;
int i;
- conf = cf_read_file (filename, 0 /* depth */);
+ conf = cf_read_generic (filename, 0 /* depth */);
if (conf == NULL)
{
ERROR ("Unable to read config file %s.", filename);
dispatch_block (conf->children + i);
}
+ oconfig_free (conf);
+
+ /* Read the default types.db if no `TypesDB' option was given. */
if (cf_default_typesdb)
- read_types_list (PLUGINDIR"/types.db"); /* FIXME: Configure path */
+ read_types_list (PKGDATADIR"/types.db");
+
return (0);
} /* int cf_read */
projects / collectd.git / blobdiff