/**
* collectd - src/configfile.c
- * Copyright (C) 2005 Florian octo Forster
+ * Copyright (C) 2005-2008 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>
**/
-/*
- * FIXME:
- * - remove all (I mean *ALL*) calls to `fprintf': `stderr' will have been
- * closed.
- */
-
#include "collectd.h"
-#include "libconfig/libconfig.h"
+#include "liboconfig/oconfig.h"
+#include "common.h"
+#include "plugin.h"
#include "configfile.h"
-#include "utils_debug.h"
+#include "types_list.h"
+#include "utils_threshold.h"
-#define SHORTOPT_NONE 0
+#if HAVE_WORDEXP_H
+# include <wordexp.h>
+#endif /* HAVE_WORDEXP_H */
-#define ERR_NOT_NESTED "Sections cannot be nested.\n"
-#define ERR_SECTION_ONLY "`%s' can only be used as section.\n"
-#define ERR_NEEDS_ARG "Section `%s' needs an argument.\n"
-#define ERR_NEEDS_SECTION "`%s' can only be used within a section.\n"
+#define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
+/*
+ * Private types
+ */
typedef struct cf_callback
{
- char *type;
- int (*callback) (char *, char *);
- char **keys;
+ const char *type;
+ int (*callback) (const char *, const char *);
+ const char **keys;
int keys_num;
struct cf_callback *next;
} cf_callback_t;
+typedef struct cf_complex_callback_s
+{
+ char *type;
+ int (*callback) (oconfig_item_t *);
+ 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_value_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_value_loadplugin}
+};
+static int cf_value_map_num = STATIC_ARRAY_LEN (cf_value_map);
-static int nesting_depth = 0;
-static char *current_module = NULL;
+static cf_global_option_t cf_global_options[] =
+{
+ {"BaseDir", NULL, PKGLOCALSTATEDIR},
+ {"PIDFile", NULL, PIDFILE},
+ {"Hostname", NULL, NULL},
+ {"FQDNLookup", NULL, "false"},
+ {"Interval", NULL, "10"},
+ {"ReadThreads", NULL, "5"}
+};
+static int cf_global_options_num = STATIC_ARRAY_LEN (cf_global_options);
-/* cf_register needs this prototype */
-int cf_callback_general (const char *, const char *, const char *,
- const char *, lc_flags_t, void *);
+static int cf_default_typesdb = 1;
/*
- * Functions to handle register/unregister, search, ...
+ * Functions to handle register/unregister, search, and other plugin related
+ * stuff
*/
-cf_callback_t *cf_search (char *type)
+static cf_callback_t *cf_search (const char *type)
{
cf_callback_t *cf_cb;
return (cf_cb);
}
-int cf_dispatch (char *type, const char *orig_key, const char *orig_value)
+static int cf_dispatch (const char *type, const char *orig_key,
+ const char *orig_value)
{
cf_callback_t *cf_cb;
char *key;
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)
{
- fprintf (stderr, "Plugin `%s' did not register a callback.\n", type);
+ WARNING ("Found a configuration for the `%s' plugin, but "
+ "the plugin isn't loaded or didn't register "
+ "a configuration callback.", type);
return (-1);
}
for (i = 0; i < cf_cb->keys_num; i++)
{
if (strcasecmp (cf_cb->keys[i], key) == 0)
+ {
ret = (*cf_cb->callback) (key, value);
+ break;
+ }
}
if (i >= cf_cb->keys_num)
- fprintf (stderr, "Plugin `%s' did not register for value `%s'.\n", type, key);
+ WARNING ("Plugin `%s' did not register for value `%s'.", type, key);
free (key);
free (value);
+ DEBUG ("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];
+ snprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
+ tmp[127] = '\0';
+ 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)
+ return (-1);
+
+ for (i = 0; i < ci->values_num; ++i)
+ {
+ if (OCONFIG_TYPE_STRING != ci->values[i].type)
+ 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);
}
-void cf_unregister (char *type)
+static int dispatch_value_loadplugin (const oconfig_item_t *ci)
{
- cf_callback_t *this, *prev;
+ assert (strcasecmp (ci->key, "LoadPlugin") == 0);
- for (prev = NULL, this = first_callback;
- this != NULL;
- prev = this, this = this->next)
- if (strcasecmp (this->type, type) == 0)
+ if (ci->values_num != 1)
+ return (-1);
+ if (ci->values[0].type != OCONFIG_TYPE_STRING)
+ return (-1);
+
+ return (plugin_load (ci->values[0].value.string));
+} /* 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 = snprintf (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",
+ ci->values[i].value.number);
+ else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
+ status = snprintf (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 plugin_conf_dispatch */
+
+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)
{
- if (prev == NULL)
- first_callback = this->next;
- else
- prev->next = this->next;
+ ret = cf_value_map[i].func (ci);
+ break;
+ }
- free (this);
+ 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;
}
-}
-void cf_register (char *type,
- int (*callback) (char *, char *),
- char **keys, int keys_num)
+ return (ret);
+} /* int dispatch_value */
+
+static int dispatch_block_plugin (oconfig_item_t *ci)
{
- cf_callback_t *cf_cb;
- char buf[64];
int i;
+ char *name;
- /* Remove this module from the list, if it already exists */
- cf_unregister (type);
+ cf_complex_callback_t *cb;
- /* This pointer will be free'd in `cf_unregister' */
- if ((cf_cb = (cf_callback_t *) malloc (sizeof (cf_callback_t))) == NULL)
- return;
+ 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);
- cf_cb->type = type;
- cf_cb->callback = callback;
- cf_cb->keys = keys;
- cf_cb->keys_num = keys_num;
+ name = ci->values[0].value.string;
- cf_cb->next = first_callback;
- first_callback = cf_cb;
+ /* Check for a complex callback first */
+ for (cb = complex_callback_head; cb != NULL; cb = cb->next)
+ if (strcasecmp (name, cb->type) == 0)
+ return (cb->callback (ci));
- for (i = 0; i < keys_num; i++)
+ /* Hm, no complex plugin found. Dispatch the values one by one */
+ for (i = 0; i < ci->children_num; i++)
{
- if (snprintf (buf, 64, "Module.%s", keys[i]) < 64)
- {
- /* This may be called multiple times for the same
- * `key', but apparently `lc_register_*' can handle
- * it.. */
- lc_register_callback (buf, SHORTOPT_NONE,
- LC_VAR_STRING, cf_callback_general,
- NULL);
- }
+ if (ci->children[i].children == NULL)
+ dispatch_value_plugin (name, ci->children + i);
else
+ {DEBUG ("No nested config blocks allowed for this plugin.");}
+ }
+
+ return (0);
+}
+
+
+static int dispatch_block (oconfig_item_t *ci)
+{
+ if (strcasecmp (ci->key, "Plugin") == 0)
+ return (dispatch_block_plugin (ci));
+ else if (strcasecmp (ci->key, "Threshold") == 0)
+ return (ut_config (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)
{
- DBG ("Key was truncated: `%s'", keys[i]);
+ sfree (temp->values[i].value.string);
}
}
-}
+ sfree (temp->values);
+ temp = NULL;
-/*
- * Functions for the actual parsing
- */
-int cf_callback_general (const char *shortvar, const char *var,
- const char *arguments, const char *value, lc_flags_t flags,
- void *extra)
+ /* 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)
{
- DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
- shortvar, var, arguments, value);
+ oconfig_item_t *temp;
+
+ if ((src == NULL) || (src->children_num == 0))
+ return (0);
- if ((nesting_depth == 0) || (current_module == NULL))
+ temp = (oconfig_item_t *) realloc (dst->children,
+ sizeof (oconfig_item_t)
+ * (dst->children_num + src->children_num));
+ if (temp == NULL)
{
- fprintf (stderr, ERR_NEEDS_SECTION, shortvar);
- return (LC_CBRET_ERROR);
+ ERROR ("configfile: realloc failed.");
+ return (-1);
}
+ dst->children = temp;
- /* Send the data to the plugin */
- if (cf_dispatch (current_module, shortvar, value) < 0)
- return (LC_CBRET_ERROR);
+ memcpy (dst->children + dst->children_num,
+ src->children,
+ sizeof (oconfig_item_t)
+ * src->children_num);
+ dst->children_num += src->children_num;
- return (LC_CBRET_OKAY);
-}
+ return (0);
+} /* int cf_ci_append_children */
+
+#define CF_MAX_DEPTH 8
+static oconfig_item_t *cf_read_generic (const char *path, int depth);
-int cf_callback_section_mode (const char *shortvar, const char *var,
- const char *arguments, const char *value, lc_flags_t flags,
- void *extra)
+static int cf_include_all (oconfig_item_t *root, int depth)
{
- DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
- shortvar, var, arguments, value);
+ int i;
- if (flags == LC_FLAGS_SECTIONSTART)
+ for (i = 0; i < root->children_num; i++)
{
- if (nesting_depth != 0)
- {
- fprintf (stderr, ERR_NOT_NESTED);
- return (LC_CBRET_ERROR);
- }
+ oconfig_item_t *new;
+ oconfig_item_t *old;
- if (arguments == NULL)
+ /* Ignore all blocks, including `Include' blocks. */
+ if (root->children[i].children_num != 0)
+ continue;
+
+ 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))
{
- fprintf (stderr, ERR_NEEDS_ARG, shortvar);
- return (LC_CBRET_ERROR);
+ ERROR ("configfile: `Include' needs exactly one string argument.");
+ continue;
}
- nesting_depth++;
+ new = cf_read_generic (old->values[0].value.string, depth + 1);
+ if (new == NULL)
+ continue;
+
+ /* 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;
- if (((operating_mode == MODE_CLIENT)
- && (strcasecmp (arguments, "Client") == 0))
- || ((operating_mode == MODE_SERVER)
- && (strcasecmp (arguments, "Server") == 0))
- || ((operating_mode == MODE_LOCAL)
- && (strcasecmp (arguments, "Local") == 0)))
+ status = snprintf (name, sizeof (name), "%s/%s",
+ dir, de->d_name);
+ if (status >= sizeof (name))
{
- return (LC_CBRET_OKAY);
+ 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);
}
- else
- {
- return (LC_CBRET_IGNORESECTION);
+
+ ++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);
}
- else if (flags == LC_FLAGS_SECTIONEND)
+
+ qsort ((void *) filenames, filenames_num, sizeof (*filenames),
+ cf_compare_string);
+
+ for (i = 0; i < filenames_num; ++i)
{
- nesting_depth--;
+ 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);
+ }
+
+ cf_ci_append_children (root, temp);
+ sfree (temp->children);
+ sfree (temp);
- return (LC_CBRET_OKAY);
+ free (name);
}
- else
+
+ 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, int depth)
+{
+ oconfig_item_t *root = NULL;
+ int status;
+ const char *path_ptr;
+ wordexp_t we;
+ int i;
+
+ if (depth >= CF_MAX_DEPTH)
{
- fprintf (stderr, ERR_SECTION_ONLY, shortvar);
- return (LC_CBRET_ERROR);
+ 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);
+ }
-int cf_callback_section_module (const char *shortvar, const char *var,
- const char *arguments, const char *value, lc_flags_t flags,
- void *extra)
-{
- DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
- shortvar, var, arguments, value);
+ 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);
- if (flags == LC_FLAGS_SECTIONSTART)
+ for (i = 0; i < we.we_wordc; i++)
{
- if (nesting_depth != 0)
- {
- fprintf (stderr, ERR_NOT_NESTED);
- return (LC_CBRET_ERROR);
- }
+ oconfig_item_t *temp;
+ struct stat statbuf;
- if (arguments == NULL)
+ path_ptr = we.we_wordv[i];
+
+ status = stat (path_ptr, &statbuf);
+ if (status != 0)
{
- fprintf (stderr, ERR_NEEDS_ARG, shortvar);
- return (LC_CBRET_ERROR);
+ char errbuf[1024];
+ ERROR ("configfile: stat (%s) failed: %s",
+ path_ptr,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ oconfig_free (root);
+ return (NULL);
}
- if ((current_module = strdup (arguments)) == 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
{
- perror ("strdup");
- return (LC_CBRET_ERROR);
+ ERROR ("configfile: %s is neither a file nor a "
+ "directory.", path);
+ continue;
}
- nesting_depth++;
+ if (temp == NULL) {
+ oconfig_free (root);
+ return (NULL);
+ }
- if (cf_search (current_module) != NULL)
- return (LC_CBRET_OKAY);
- else
- return (LC_CBRET_IGNORESECTION);
+ cf_ci_append_children (root, temp);
+ sfree (temp->children);
+ sfree (temp);
}
- else if (flags == LC_FLAGS_SECTIONEND)
- {
- if (current_module != NULL)
- {
- free (current_module);
- current_module == NULL;
- }
- nesting_depth--;
+ 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, int depth)
+{
+ struct stat statbuf;
+ int status;
- return (LC_CBRET_OKAY);
+ if (depth >= CF_MAX_DEPTH)
+ {
+ ERROR ("configfile: Not including `%s' because the maximum "
+ "nesting depth has been reached.", path);
+ return (NULL);
}
- else
+
+ status = stat (path, &statbuf);
+ if (status != 0)
{
- fprintf (stderr, ERR_SECTION_ONLY, shortvar);
- return (LC_CBRET_ERROR);
+ char errbuf[1024];
+ ERROR ("configfile: stat (%s) failed: %s",
+ path,
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (NULL);
}
-}
-int cf_callback_loadmodule (const char *shortvar, const char *var,
- const char *arguments, const char *value, lc_flags_t flags,
- void *extra)
+ 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
+ */
+int global_option_set (const char *option, const char *value)
{
- DBG ("shortvar = %s, var = %s, arguments = %s, value = %s, ...",
- shortvar, var, arguments, value);
+ int i;
- if (nesting_depth == 0)
- {
- fprintf (stderr, ERR_NEEDS_SECTION, shortvar);
- return (LC_CBRET_ERROR);
- }
+ 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;
- /*
- * TODO:
- * - Write wrapper around `plugin_load' to resolve path/filename
- * - Call this new, public function here
- */
- DBG ("Implement me, idiot!");
+ if (i >= cf_global_options_num)
+ return (-1);
+
+ sfree (cf_global_options[i].value);
+
+ if (value != NULL)
+ cf_global_options[i].value = strdup (value);
+ else
+ cf_global_options[i].value = NULL;
- return (LC_CBRET_OKAY);
+ return (0);
}
-int cf_read (char *filename)
+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 */
+
+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)
{
- if (filename == NULL)
- filename = CONFIGFILE;
+ 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;
- lc_register_callback ("Mode", SHORTOPT_NONE, LC_VAR_SECTION,
- cf_callback_section_mode, NULL);
- lc_register_callback ("Module", SHORTOPT_NONE, LC_VAR_SECTION,
- cf_callback_section_module, NULL);
+ sfree (this->type);
+ sfree (this);
+ break;
+ }
+} /* void cf_unregister */
- /*
- * TODO:
- * - Add more directives, such as `DefaultMode', `DataDir', `PIDFile', ...
- */
+void cf_register (const char *type,
+ int (*callback) (const char *, const char *),
+ const char **keys, int keys_num)
+{
+ cf_callback_t *cf_cb;
- lc_register_callback ("Mode.LoadModule", SHORTOPT_NONE,
- LC_VAR_STRING, cf_callback_loadmodule,
- NULL);
+ /* Remove this module from the list, if it already exists */
+ cf_unregister (type);
- if (lc_process_file ("collectd", filename, LC_CONF_APACHE))
+ /* 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->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)
{
- /* FIXME: Use syslog here */
- fprintf (stderr, "Error loading config file `%s': %s\n",
- filename, lc_geterrstr ());
+ sfree (new);
return (-1);
}
- /* free memory and stuff */
- lc_cleanup ();
+ new->callback = callback;
+ new->next = NULL;
+
+ 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, 0 /* depth */);
+ if (conf == NULL)
+ {
+ ERROR ("Unable to read config file %s.", filename);
+ 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 (PLUGINDIR"/types.db");
+
+ return (0);
+} /* int cf_read */