+++ /dev/null
-/**
- * collectd - src/configfile.c
- * Copyright (C) 2005-2011 Florian octo Forster
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Florian octo Forster <octo at collectd.org>
- * Sebastian tokkee Harl <sh at tokkee.org>
- **/
-
-#include "collectd.h"
-
-#include "liboconfig/oconfig.h"
-
-#include "common.h"
-#include "plugin.h"
-#include "configfile.h"
-#include "types_list.h"
-#include "filter_chain.h"
-
-#if HAVE_WORDEXP_H
-# include <wordexp.h>
-#endif /* HAVE_WORDEXP_H */
-
-#if HAVE_FNMATCH_H
-# include <fnmatch.h>
-#endif /* HAVE_FNMATCH_H */
-
-#if HAVE_LIBGEN_H
-# include <libgen.h>
-#endif /* HAVE_LIBGEN_H */
-
-#define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
-
-/*
- * Private types
- */
-typedef struct cf_callback
-{
- const char *type;
- int (*callback) (const char *, const char *);
- const char **keys;
- int keys_num;
- plugin_ctx_t ctx;
- struct cf_callback *next;
-} cf_callback_t;
-
-typedef struct cf_complex_callback_s
-{
- char *type;
- int (*callback) (oconfig_item_t *);
- plugin_ctx_t ctx;
- struct cf_complex_callback_s *next;
-} cf_complex_callback_t;
-
-typedef struct cf_value_map_s
-{
- char *key;
- int (*func) (const oconfig_item_t *);
-} cf_value_map_t;
-
-typedef struct cf_global_option_s
-{
- char *key;
- char *value;
- char *def;
-} cf_global_option_t;
-
-/*
- * Prototypes of callback functions
- */
-static int dispatch_value_typesdb (const oconfig_item_t *ci);
-static int dispatch_value_plugindir (const oconfig_item_t *ci);
-static int dispatch_loadplugin (const oconfig_item_t *ci);
-
-/*
- * Private variables
- */
-static cf_callback_t *first_callback = NULL;
-static cf_complex_callback_t *complex_callback_head = NULL;
-
-static cf_value_map_t cf_value_map[] =
-{
- {"TypesDB", dispatch_value_typesdb},
- {"PluginDir", dispatch_value_plugindir},
- {"LoadPlugin", dispatch_loadplugin}
-};
-static int cf_value_map_num = STATIC_ARRAY_SIZE (cf_value_map);
-
-static cf_global_option_t cf_global_options[] =
-{
- {"BaseDir", NULL, PKGLOCALSTATEDIR},
- {"PIDFile", NULL, PIDFILE},
- {"Hostname", NULL, NULL},
- {"FQDNLookup", NULL, "true"},
- {"Interval", NULL, NULL},
- {"ReadThreads", NULL, "5"},
- {"WriteThreads", NULL, "5"},
- {"WriteQueueLimitHigh", NULL, NULL},
- {"WriteQueueLimitLow", NULL, NULL},
- {"Timeout", NULL, "2"},
- {"AutoLoadPlugin", NULL, "false"},
- {"CollectInternalStats", NULL, "false"},
- {"PreCacheChain", NULL, "PreCache"},
- {"PostCacheChain", NULL, "PostCache"},
- {"MaxReadInterval", NULL, "86400"}
-};
-static int cf_global_options_num = STATIC_ARRAY_SIZE (cf_global_options);
-
-static int cf_default_typesdb = 1;
-
-/*
- * Functions to handle register/unregister, search, and other plugin related
- * stuff
- */
-static cf_callback_t *cf_search (const char *type)
-{
- cf_callback_t *cf_cb;
-
- if (type == NULL)
- return (NULL);
-
- for (cf_cb = first_callback; cf_cb != NULL; cf_cb = cf_cb->next)
- if (strcasecmp (cf_cb->type, type) == 0)
- break;
-
- return (cf_cb);
-}
-
-static int cf_dispatch (const char *type, const char *orig_key,
- const char *orig_value)
-{
- cf_callback_t *cf_cb;
- plugin_ctx_t old_ctx;
- char *key;
- char *value;
- int ret;
- int i;
-
- DEBUG ("type = %s, key = %s, value = %s",
- ESCAPE_NULL(type),
- ESCAPE_NULL(orig_key),
- ESCAPE_NULL(orig_value));
-
- if ((cf_cb = cf_search (type)) == NULL)
- {
- WARNING ("Found a configuration for the `%s' plugin, but "
- "the plugin isn't loaded or didn't register "
- "a configuration callback.", type);
- return (-1);
- }
-
- if ((key = strdup (orig_key)) == NULL)
- return (1);
- if ((value = strdup (orig_value)) == NULL)
- {
- free (key);
- return (2);
- }
-
- ret = -1;
-
- old_ctx = plugin_set_ctx (cf_cb->ctx);
-
- for (i = 0; i < cf_cb->keys_num; i++)
- {
- if ((cf_cb->keys[i] != NULL)
- && (strcasecmp (cf_cb->keys[i], key) == 0))
- {
- ret = (*cf_cb->callback) (key, value);
- break;
- }
- }
-
- plugin_set_ctx (old_ctx);
-
- if (i >= cf_cb->keys_num)
- WARNING ("Plugin `%s' did not register for value `%s'.", type, key);
-
- free (key);
- free (value);
-
- DEBUG ("cf_dispatch: return (%i)", ret);
-
- return (ret);
-} /* int cf_dispatch */
-
-static int dispatch_global_option (const oconfig_item_t *ci)
-{
- if (ci->values_num != 1)
- return (-1);
- if (ci->values[0].type == OCONFIG_TYPE_STRING)
- return (global_option_set (ci->key, ci->values[0].value.string));
- else if (ci->values[0].type == OCONFIG_TYPE_NUMBER)
- {
- char tmp[128];
- 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)
- {
- if (ci->values[0].value.boolean)
- return (global_option_set (ci->key, "true"));
- else
- return (global_option_set (ci->key, "false"));
- }
-
- return (-1);
-} /* int dispatch_global_option */
-
-static int dispatch_value_typesdb (const oconfig_item_t *ci)
-{
- int i = 0;
-
- assert (strcasecmp (ci->key, "TypesDB") == 0);
-
- cf_default_typesdb = 0;
-
- 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) {
- WARNING ("configfile: TypesDB: Skipping %i. argument which "
- "is not a string.", i + 1);
- continue;
- }
-
- read_types_list (ci->values[i].value.string);
- }
- return (0);
-} /* int dispatch_value_typesdb */
-
-static int dispatch_value_plugindir (const oconfig_item_t *ci)
-{
- assert (strcasecmp (ci->key, "PluginDir") == 0);
-
- if (ci->values_num != 1)
- return (-1);
- if (ci->values[0].type != OCONFIG_TYPE_STRING)
- return (-1);
-
- plugin_set_dir (ci->values[0].value.string);
- return (0);
-}
-
-static int dispatch_loadplugin (const oconfig_item_t *ci)
-{
- int i;
- const char *name;
- unsigned int flags = 0;
- plugin_ctx_t ctx;
- plugin_ctx_t old_ctx;
- int ret_val;
-
- assert (strcasecmp (ci->key, "LoadPlugin") == 0);
-
- if (ci->values_num != 1)
- return (-1);
- if (ci->values[0].type != OCONFIG_TYPE_STRING)
- return (-1);
-
- name = ci->values[0].value.string;
- if (strcmp ("libvirt", name) == 0)
- name = "virt";
-
- /* default to the global interval set before loading this plugin */
- memset (&ctx, 0, sizeof (ctx));
- ctx.interval = cf_get_default_interval ();
-
- for (i = 0; i < ci->children_num; ++i) {
- if (strcasecmp("Globals", ci->children[i].key) == 0)
- cf_util_get_flag (ci->children + i, &flags, PLUGIN_FLAGS_GLOBAL);
- else if (strcasecmp ("Interval", ci->children[i].key) == 0) {
- if (cf_util_get_cdtime (ci->children + i, &ctx.interval) != 0) {
- /* cf_util_get_cdtime will log an error */
- continue;
- }
- }
- else {
- WARNING("Ignoring unknown LoadPlugin option \"%s\" "
- "for plugin \"%s\"",
- ci->children[i].key, ci->values[0].value.string);
- }
- }
-
- old_ctx = plugin_set_ctx (ctx);
- ret_val = plugin_load (name, (uint32_t) flags);
- /* reset to the "global" context */
- plugin_set_ctx (old_ctx);
-
- return (ret_val);
-} /* int dispatch_value_loadplugin */
-
-static int dispatch_value_plugin (const char *plugin, oconfig_item_t *ci)
-{
- char buffer[4096];
- char *buffer_ptr;
- int buffer_free;
- int i;
-
- buffer_ptr = buffer;
- buffer_free = sizeof (buffer);
-
- for (i = 0; i < ci->values_num; i++)
- {
- int status = -1;
-
- if (ci->values[i].type == OCONFIG_TYPE_STRING)
- status = ssnprintf (buffer_ptr, buffer_free, " %s",
- ci->values[i].value.string);
- else if (ci->values[i].type == OCONFIG_TYPE_NUMBER)
- status = ssnprintf (buffer_ptr, buffer_free, " %lf",
- ci->values[i].value.number);
- else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
- status = ssnprintf (buffer_ptr, buffer_free, " %s",
- ci->values[i].value.boolean
- ? "true" : "false");
-
- if ((status < 0) || (status >= buffer_free))
- return (-1);
- buffer_free -= status;
- buffer_ptr += status;
- }
- /* skip the initial space */
- buffer_ptr = buffer + 1;
-
- return (cf_dispatch (plugin, ci->key, buffer_ptr));
-} /* int dispatch_value_plugin */
-
-static int dispatch_value (const oconfig_item_t *ci)
-{
- int ret = -2;
- int i;
-
- for (i = 0; i < cf_value_map_num; i++)
- if (strcasecmp (cf_value_map[i].key, ci->key) == 0)
- {
- ret = cf_value_map[i].func (ci);
- break;
- }
-
- for (i = 0; i < cf_global_options_num; i++)
- if (strcasecmp (cf_global_options[i].key, ci->key) == 0)
- {
- ret = dispatch_global_option (ci);
- break;
- }
-
- return (ret);
-} /* int dispatch_value */
-
-static int dispatch_block_plugin (oconfig_item_t *ci)
-{
- int i;
- char *name;
-
- cf_complex_callback_t *cb;
-
- if (strcasecmp (ci->key, "Plugin") != 0)
- return (-1);
- if (ci->values_num < 1)
- return (-1);
- if (ci->values[0].type != OCONFIG_TYPE_STRING)
- return (-1);
-
- name = ci->values[0].value.string;
- if (strcmp ("libvirt", name) == 0)
- {
- /* TODO(octo): Remove this legacy. */
- WARNING ("The \"libvirt\" plugin has been renamed to \"virt\" to avoid problems with the build system. "
- "Your configuration is still using the old name. "
- "Please change it to use \"virt\" as soon as possible. "
- "This compatibility code will go away eventually.");
- name = "virt";
- }
-
- if (IS_TRUE (global_option_get ("AutoLoadPlugin")))
- {
- int status;
-
- status = plugin_load (name, /* flags = */ 0);
- if (status != 0)
- {
- ERROR ("Automatically loading plugin \"%s\" failed "
- "with status %i.", name, status);
- return (status);
- }
- }
-
- /* Check for a complex callback first */
- for (cb = complex_callback_head; cb != NULL; cb = cb->next)
- {
- if (strcasecmp (name, cb->type) == 0)
- {
- plugin_ctx_t old_ctx;
- int ret_val;
-
- old_ctx = plugin_set_ctx (cb->ctx);
- ret_val = (cb->callback (ci));
- plugin_set_ctx (old_ctx);
- return (ret_val);
- }
- }
-
- /* Hm, no complex plugin found. Dispatch the values one by one */
- for (i = 0; i < ci->children_num; i++)
- {
- if (ci->children[i].children == NULL)
- dispatch_value_plugin (name, ci->children + i);
- else
- {
- WARNING ("There is a `%s' block within the "
- "configuration for the %s plugin. "
- "The plugin either only expects "
- "\"simple\" configuration statements "
- "or wasn't loaded using `LoadPlugin'."
- " Please check your configuration.",
- ci->children[i].key, name);
- }
- }
-
- return (0);
-}
-
-
-static int dispatch_block (oconfig_item_t *ci)
-{
- if (strcasecmp (ci->key, "LoadPlugin") == 0)
- return (dispatch_loadplugin (ci));
- else if (strcasecmp (ci->key, "Plugin") == 0)
- return (dispatch_block_plugin (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 < (dst->children_num - 1)), then
- * we need to move the trailing elements before resizing the array. */
- if ((src->children_num == 0) && (offset < (dst->children_num - 1)))
- {
- int nmemb = dst->children_num - (offset + 1);
- memmove (dst->children + offset, dst->children + offset + 1,
- sizeof (oconfig_item_t) * nmemb);
- }
-
- /* Resize the memory containing the children to be big enough to hold
- * all children. */
- if (dst->children_num + src->children_num - 1 == 0)
- {
- dst->children_num = 0;
- return (0);
- }
-
- 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 children, 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_generic (const char *path,
- const char *pattern, int depth);
-
-static int cf_include_all (oconfig_item_t *root, int depth)
-{
- int i;
-
- for (i = 0; i < root->children_num; i++)
- {
- oconfig_item_t *new;
- oconfig_item_t *old;
-
- char *pattern = NULL;
-
- int j;
-
- if (strcasecmp (root->children[i].key, "Include") != 0)
- continue;
-
- old = root->children + i;
-
- if ((old->values_num != 1)
- || (old->values[0].type != OCONFIG_TYPE_STRING))
- {
- ERROR ("configfile: `Include' needs exactly one string argument.");
- continue;
- }
-
- for (j = 0; j < old->children_num; ++j)
- {
- oconfig_item_t *child = old->children + j;
-
- if (strcasecmp (child->key, "Filter") == 0)
- cf_util_get_string (child, &pattern);
- else
- ERROR ("configfile: Option `%s' not allowed in <Include> block.",
- child->key);
- }
-
- new = cf_read_generic (old->values[0].value.string, pattern, depth + 1);
- sfree (pattern);
-
- if (new == NULL)
- return (-1);
-
- /* Now replace the i'th child in `root' with `new'. */
- if (cf_ci_replace_child (root, new, i) < 0)
- return (-1);
-
- /* ... and go back to the new i'th child. */
- --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,
- const char *pattern, int depth)
-{
- oconfig_item_t *root;
- int status;
-
- assert (depth < CF_MAX_DEPTH);
-
- if (pattern != NULL) {
-#if HAVE_FNMATCH_H && HAVE_LIBGEN_H
- char *tmp = sstrdup (file);
- char *filename = basename (tmp);
-
- if ((filename != NULL) && (fnmatch (pattern, filename, 0) != 0)) {
- DEBUG ("configfile: Not including `%s' because it "
- "does not match pattern `%s'.",
- filename, pattern);
- free (tmp);
- return (NULL);
- }
-
- free (tmp);
-#else
- ERROR ("configfile: Cannot apply pattern filter '%s' "
- "to file '%s': functions basename() and / or "
- "fnmatch() not available.", pattern, file);
-#endif /* HAVE_FNMATCH_H && HAVE_LIBGEN_H */
- }
-
- root = oconfig_parse_file (file);
- if (root == NULL)
- {
- ERROR ("configfile: Cannot read file `%s'.", file);
- return (NULL);
- }
-
- status = cf_include_all (root, depth);
- if (status != 0)
- {
- oconfig_free (root);
- return (NULL);
- }
-
- 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,
- const char *pattern, 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)))
- {
- 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);
- }
-
- ++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;
-
- 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, pattern, depth);
- if (temp == NULL)
- {
- /* An error should already have been reported. */
- sfree (name);
- continue;
- }
-
- cf_ci_append_children (root, temp);
- sfree (temp->children);
- sfree (temp);
-
- free (name);
- }
-
- free(filenames);
- return (root);
-} /* oconfig_item_t *cf_read_dir */
-
-/*
- * 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,
- const char *pattern, int depth)
-{
- 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.", path);
- return (NULL);
- }
-
- 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: malloc failed.");
- return (NULL);
- }
- memset (root, '\0', sizeof (oconfig_item_t));
-
- /* 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];
- WARNING ("configfile: stat (%s) failed: %s",
- path_ptr,
- sstrerror (errno, errbuf, sizeof (errbuf)));
- continue;
- }
-
- if (S_ISREG (statbuf.st_mode))
- temp = cf_read_file (path_ptr, pattern, depth);
- else if (S_ISDIR (statbuf.st_mode))
- temp = cf_read_dir (path_ptr, pattern, depth);
- else
- {
- WARNING ("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_generic */
-/* #endif HAVE_WORDEXP_H */
-
-#else /* if !HAVE_WORDEXP_H */
-static oconfig_item_t *cf_read_generic (const char *path,
- const char *pattern, 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, pattern, depth));
- else if (S_ISDIR (statbuf.st_mode))
- return (cf_read_dir (path, pattern, 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
- */
-int global_option_set (const char *option, const char *value)
-{
- int i;
-
- DEBUG ("option = %s; value = %s;", option, value);
-
- for (i = 0; i < cf_global_options_num; i++)
- if (strcasecmp (cf_global_options[i].key, option) == 0)
- break;
-
- if (i >= cf_global_options_num)
- return (-1);
-
- if (strcasecmp (option, "PIDFile") == 0 && pidfile_from_cli == 1)
- {
- DEBUG ("Configfile: Ignoring `PIDFILE' option because "
- "command-line option `-P' take precedence.");
- return (0);
- }
-
- sfree (cf_global_options[i].value);
-
- if (value != NULL)
- cf_global_options[i].value = strdup (value);
- else
- cf_global_options[i].value = NULL;
-
- return (0);
-}
-
-const char *global_option_get (const char *option)
-{
- int i;
-
- for (i = 0; i < cf_global_options_num; i++)
- if (strcasecmp (cf_global_options[i].key, option) == 0)
- break;
-
- if (i >= cf_global_options_num)
- return (NULL);
-
- return ((cf_global_options[i].value != NULL)
- ? cf_global_options[i].value
- : cf_global_options[i].def);
-} /* char *global_option_get */
-
-long global_option_get_long (const char *option, long default_value)
-{
- const char *str;
- long value;
-
- str = global_option_get (option);
- if (NULL == str)
- return (default_value);
-
- errno = 0;
- value = strtol (str, /* endptr = */ NULL, /* base = */ 0);
- if (errno != 0)
- return (default_value);
-
- return (value);
-} /* char *global_option_get_long */
-
-cdtime_t global_option_get_time (const char *name, cdtime_t def) /* {{{ */
-{
- char const *optstr;
- char *endptr = NULL;
- double v;
-
- optstr = global_option_get (name);
- if (optstr == NULL)
- return (def);
-
- errno = 0;
- v = strtod (optstr, &endptr);
- if ((endptr == NULL) || (*endptr != 0) || (errno != 0))
- return (def);
- else if (v <= 0.0)
- return (def);
-
- return (DOUBLE_TO_CDTIME_T (v));
-} /* }}} cdtime_t global_option_get_time */
-
-cdtime_t cf_get_default_interval (void)
-{
- return (global_option_get_time ("Interval",
- DOUBLE_TO_CDTIME_T (COLLECTD_DEFAULT_INTERVAL)));
-}
-
-void cf_unregister (const char *type)
-{
- cf_callback_t *this, *prev;
-
- for (prev = NULL, this = first_callback;
- this != NULL;
- prev = this, this = this->next)
- if (strcasecmp (this->type, type) == 0)
- {
- if (prev == NULL)
- first_callback = this->next;
- else
- prev->next = this->next;
-
- free (this);
- break;
- }
-} /* void cf_unregister */
-
-void cf_unregister_complex (const char *type)
-{
- cf_complex_callback_t *this, *prev;
-
- for (prev = NULL, this = complex_callback_head;
- this != NULL;
- prev = this, this = this->next)
- if (strcasecmp (this->type, type) == 0)
- {
- if (prev == NULL)
- complex_callback_head = this->next;
- else
- prev->next = this->next;
-
- sfree (this->type);
- sfree (this);
- break;
- }
-} /* void cf_unregister */
-
-void cf_register (const char *type,
- int (*callback) (const char *, const char *),
- const char **keys, int keys_num)
-{
- cf_callback_t *cf_cb;
-
- /* Remove this module from the list, if it already exists */
- cf_unregister (type);
-
- /* This pointer will be free'd in `cf_unregister' */
- if ((cf_cb = (cf_callback_t *) malloc (sizeof (cf_callback_t))) == NULL)
- return;
-
- cf_cb->type = type;
- cf_cb->callback = callback;
- cf_cb->keys = keys;
- cf_cb->keys_num = keys_num;
- cf_cb->ctx = plugin_get_ctx ();
-
- cf_cb->next = first_callback;
- first_callback = cf_cb;
-} /* void cf_register */
-
-int cf_register_complex (const char *type, int (*callback) (oconfig_item_t *))
-{
- cf_complex_callback_t *new;
-
- new = (cf_complex_callback_t *) malloc (sizeof (cf_complex_callback_t));
- if (new == NULL)
- return (-1);
-
- new->type = strdup (type);
- if (new->type == NULL)
- {
- sfree (new);
- return (-1);
- }
-
- new->callback = callback;
- new->next = NULL;
-
- new->ctx = plugin_get_ctx ();
-
- if (complex_callback_head == NULL)
- {
- complex_callback_head = new;
- }
- else
- {
- cf_complex_callback_t *last = complex_callback_head;
- while (last->next != NULL)
- last = last->next;
- last->next = new;
- }
-
- return (0);
-} /* int cf_register_complex */
-
-int cf_read (char *filename)
-{
- oconfig_item_t *conf;
- int i;
-
- conf = cf_read_generic (filename, /* pattern = */ NULL, /* depth = */ 0);
- if (conf == NULL)
- {
- ERROR ("Unable to read config file %s.", filename);
- return (-1);
- }
- else if (conf->children_num == 0)
- {
- ERROR ("Configuration file %s is empty.", filename);
- oconfig_free (conf);
- return (-1);
- }
-
- for (i = 0; i < conf->children_num; i++)
- {
- if (conf->children[i].children == NULL)
- dispatch_value (conf->children + i);
- else
- 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 (PKGDATADIR"/types.db");
-
- return (0);
-} /* int cf_read */
-
-/* Assures the config option is a string, duplicates it and returns the copy in
- * "ret_string". If necessary "*ret_string" is freed first. Returns zero upon
- * success. */
-int cf_util_get_string (const oconfig_item_t *ci, char **ret_string) /* {{{ */
-{
- char *string;
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- ERROR ("cf_util_get_string: The %s option requires "
- "exactly one string argument.", ci->key);
- return (-1);
- }
-
- string = strdup (ci->values[0].value.string);
- if (string == NULL)
- return (-1);
-
- if (*ret_string != NULL)
- sfree (*ret_string);
- *ret_string = string;
-
- return (0);
-} /* }}} int cf_util_get_string */
-
-/* Assures the config option is a string and copies it to the provided buffer.
- * Assures null-termination. */
-int cf_util_get_string_buffer (const oconfig_item_t *ci, char *buffer, /* {{{ */
- size_t buffer_size)
-{
- if ((ci == NULL) || (buffer == NULL) || (buffer_size < 1))
- return (EINVAL);
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- ERROR ("cf_util_get_string_buffer: The %s option requires "
- "exactly one string argument.", ci->key);
- return (-1);
- }
-
- strncpy (buffer, ci->values[0].value.string, buffer_size);
- buffer[buffer_size - 1] = 0;
-
- return (0);
-} /* }}} int cf_util_get_string_buffer */
-
-/* Assures the config option is a number and returns it as an int. */
-int cf_util_get_int (const oconfig_item_t *ci, int *ret_value) /* {{{ */
-{
- if ((ci == NULL) || (ret_value == NULL))
- return (EINVAL);
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
- {
- ERROR ("cf_util_get_int: The %s option requires "
- "exactly one numeric argument.", ci->key);
- return (-1);
- }
-
- *ret_value = (int) ci->values[0].value.number;
-
- return (0);
-} /* }}} int cf_util_get_int */
-
-int cf_util_get_double (const oconfig_item_t *ci, double *ret_value) /* {{{ */
-{
- if ((ci == NULL) || (ret_value == NULL))
- return (EINVAL);
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
- {
- ERROR ("cf_util_get_double: The %s option requires "
- "exactly one numeric argument.", ci->key);
- return (-1);
- }
-
- *ret_value = ci->values[0].value.number;
-
- return (0);
-} /* }}} int cf_util_get_double */
-
-int cf_util_get_boolean (const oconfig_item_t *ci, _Bool *ret_bool) /* {{{ */
-{
- if ((ci == NULL) || (ret_bool == NULL))
- return (EINVAL);
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
- {
- ERROR ("cf_util_get_boolean: The %s option requires "
- "exactly one boolean argument.", ci->key);
- return (-1);
- }
-
- *ret_bool = ci->values[0].value.boolean ? 1 : 0;
-
- return (0);
-} /* }}} int cf_util_get_boolean */
-
-int cf_util_get_flag (const oconfig_item_t *ci, /* {{{ */
- unsigned int *ret_value, unsigned int flag)
-{
- int status;
- _Bool b;
-
- if (ret_value == NULL)
- return (EINVAL);
-
- b = 0;
- status = cf_util_get_boolean (ci, &b);
- if (status != 0)
- return (status);
-
- if (b)
- {
- *ret_value |= flag;
- }
- else
- {
- *ret_value &= ~flag;
- }
-
- return (0);
-} /* }}} int cf_util_get_flag */
-
-/* Assures that the config option is a string or a number if the correct range
- * of 1-65535. The string is then converted to a port number using
- * `service_name_to_port_number' and returned.
- * Returns the port number in the range [1-65535] or less than zero upon
- * failure. */
-int cf_util_get_port_number (const oconfig_item_t *ci) /* {{{ */
-{
- int tmp;
-
- if ((ci->values_num != 1)
- || ((ci->values[0].type != OCONFIG_TYPE_STRING)
- && (ci->values[0].type != OCONFIG_TYPE_NUMBER)))
- {
- ERROR ("cf_util_get_port_number: The \"%s\" option requires "
- "exactly one string argument.", ci->key);
- return (-1);
- }
-
- if (ci->values[0].type == OCONFIG_TYPE_STRING)
- return (service_name_to_port_number (ci->values[0].value.string));
-
- assert (ci->values[0].type == OCONFIG_TYPE_NUMBER);
- tmp = (int) (ci->values[0].value.number + 0.5);
- if ((tmp < 1) || (tmp > 65535))
- {
- ERROR ("cf_util_get_port_number: The \"%s\" option requires "
- "a service name or a port number. The number "
- "you specified, %i, is not in the valid "
- "range of 1-65535.",
- ci->key, tmp);
- return (-1);
- }
-
- return (tmp);
-} /* }}} int cf_util_get_port_number */
-
-int cf_util_get_service (const oconfig_item_t *ci, char **ret_string) /* {{{ */
-{
- int port;
- char *service;
- int status;
-
- if (ci->values_num != 1)
- {
- ERROR ("cf_util_get_service: The %s option requires exactly "
- "one argument.", ci->key);
- return (-1);
- }
-
- if (ci->values[0].type == OCONFIG_TYPE_STRING)
- return (cf_util_get_string (ci, ret_string));
- if (ci->values[0].type != OCONFIG_TYPE_NUMBER)
- {
- ERROR ("cf_util_get_service: The %s option requires "
- "exactly one string or numeric argument.",
- ci->key);
- }
-
- port = 0;
- status = cf_util_get_int (ci, &port);
- if (status != 0)
- return (status);
- else if ((port < 1) || (port > 65535))
- {
- ERROR ("cf_util_get_service: The port number given "
- "for the %s option is out of "
- "range (%i).", ci->key, port);
- return (-1);
- }
-
- service = malloc (6);
- if (service == NULL)
- {
- ERROR ("cf_util_get_service: Out of memory.");
- return (-1);
- }
- ssnprintf (service, 6, "%i", port);
-
- sfree (*ret_string);
- *ret_string = service;
-
- return (0);
-} /* }}} int cf_util_get_service */
-
-int cf_util_get_cdtime (const oconfig_item_t *ci, cdtime_t *ret_value) /* {{{ */
-{
- if ((ci == NULL) || (ret_value == NULL))
- return (EINVAL);
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
- {
- ERROR ("cf_util_get_cdtime: The %s option requires "
- "exactly one numeric argument.", ci->key);
- return (-1);
- }
-
- if (ci->values[0].value.number < 0.0)
- {
- ERROR ("cf_util_get_cdtime: The numeric argument of the %s "
- "option must not be negative.", ci->key);
- return (-1);
- }
-
- *ret_value = DOUBLE_TO_CDTIME_T (ci->values[0].value.number);
-
- return (0);
-} /* }}} int cf_util_get_cdtime */
-
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